WO2012127888A1 - Anastomosing instrument - Google Patents

Anastomosing instrument Download PDF

Info

Publication number
WO2012127888A1
WO2012127888A1 PCT/JP2012/050681 JP2012050681W WO2012127888A1 WO 2012127888 A1 WO2012127888 A1 WO 2012127888A1 JP 2012050681 W JP2012050681 W JP 2012050681W WO 2012127888 A1 WO2012127888 A1 WO 2012127888A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
cutter
cartridge
blood vessel
clamping surface
Prior art date
Application number
PCT/JP2012/050681
Other languages
French (fr)
Japanese (ja)
Inventor
福長理恵
Original Assignee
テルモ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by テルモ株式会社 filed Critical テルモ株式会社
Publication of WO2012127888A1 publication Critical patent/WO2012127888A1/en

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115Staplers for performing anastomosis in a single operation
    • A61B17/1155Circular staplers comprising a plurality of staples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00349Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00853Material properties low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00951Material properties adhesive
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1107Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis for blood vessels
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1125Forceps, specially adapted for performing or assisting anastomosis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1135End-to-side connections, e.g. T- or Y-connections

Definitions

  • the present invention relates to an anastomosis device for joining a plurality of elements separated from each other in a surgical operation.
  • Aortic aneurysm surgery is generally an artificial blood vessel replacement that removes the aneurysm and replaces it with an artificial blood vessel.
  • the thoracoabdominal aortic aneurysm often has a wide range of “kumps”, and the aorta is replaced with various organs (abdominal organs, kidneys, Branch reconstruction to the spinal cord) is also performed.
  • Insufficient blood flow to the spinal cord and abdominal organs during surgery may cause lower body paralysis (paraplegia), sensory disturbance, dysuria, and acute renal failure, and quickly resume branch reconstruction from the abdominal aorta This is very important.
  • segmental blockage is used to shorten spinal cord ischemia time, and the intercostal artery and abdominal branch are individually reconstructed with a small-diameter artificial blood vessel, or are reconstructed in an island-like manner. Two methods of “reconstruction” are adopted.
  • branch arteries have been reconstructed by hand stitching, so it takes time for anastomosis for operators who are not familiar with hand stitching techniques, and the risk of abdominal organ ischemia during branch vessel reconstruction in island reconstruction is high it is conceivable that.
  • anastomosis devices for end-to-end anastomosis and end-to-end anastomosis.
  • Insular anastomoses are end-to-side anastomoses, but conventional end-to-end anastomoses require attachment of a stent-like device to the blood vessels (branch vessels) on the end. It cannot be used for the island anastomosis.
  • Examples of other automatic anastomoses include an end stapler for lung resection, a linear stapler for the digestive tract, and a circular stapler (see Japanese Patent Application Laid-Open No. 2004-89442). However, these staplers are also unable to join tissue to the side openings, making it difficult to apply artificial blood vessel replacement to island reconstruction, and do not lead to a significant reduction in anastomosis time. It is done.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide an anastomosis device capable of automatically anastomosing an overlapping portion of an artificial blood vessel and a natural blood vessel including a branch blood vessel in a planar shape.
  • an anastomotic apparatus includes a first clamping surface, a cartridge that houses a plurality of needles, and a needle moving mechanism that pushes out a needle from the cartridge through the first clamping surface.
  • An arm and a second arm having a second clamping surface that is disposed opposite to the first arm and forms a staple forming surface that bends the needle when the needle is pushed out.
  • the second arm are connected so as to be close to and away from each other, and the cartridge extends so as to be curved or bent so as to form at least a part of an annular shape, and the second clamping surface includes at least The cartridge extends along the extended shape of the cartridge.
  • the artificial blood vessel and the natural blood vessel including the branch blood vessel are overlapped, and the overlapping portion is sandwiched and fixed between the first sandwiching surface and the second sandwiching surface, and the first sandwiching is performed in this state.
  • the overlapping portion of the artificial blood vessel and the natural blood vessel can be anastomosed.
  • an artificial blood vessel and a natural blood vessel can be joined. Therefore, compared with the prior art (hand-sewn), the anastomosis time is significantly shortened, and the branch vessel detachment can be reduced, so that the risk of vascular occlusion can be reduced.
  • the first arm can protrude and retract with respect to the first clamping surface and extends along the inner periphery of the cartridge inside the cartridge, and moves the cutter into and out of the cutter. It is preferable to have a cutter moving mechanism.
  • an opening can be instantaneously formed on the side surface of the artificial blood vessel by sandwiching the artificial blood vessel and the natural blood vessel between the first clamping surface and the second clamping surface and projecting the cutter. Then, the plurality of needles are pushed out from the cartridge while the artificial blood vessel and the natural blood vessel are sandwiched between the first clamping surface and the second clamping surface, whereby the peripheral portion of the opening formed in the artificial blood vessel overlaps with the natural blood vessel.
  • the parts can be anastomosed.
  • the cartridge is configured in an annular shape
  • the cutter is a cylindrical cutter
  • the second arm is provided with a head portion that can be opened and closed, and the head portion is closed.
  • the same annular shape as that of the cartridge is formed
  • the second clamping surface is preferably provided on the side of the head portion that faces the first clamping surface.
  • the overlapping portion of the artificial blood vessel and the natural blood vessel is anastomosed so as to surround the branch blood vessel of the natural blood vessel by only one cutter intrusion operation and one needle push-out operation. Can do. Therefore, the anastomosis time can be further shortened.
  • an adhesive surface may be provided on the side of the first arm facing the second arm and inside the cutter in plan view.
  • a shielding plate that comes into contact with the cutter when the cutter protrudes toward the second arm is provided between the first arm and the second arm, and the shielding plate includes the first arm and the second arm. It is good to be displaceable to the shielding position between the clamping surface and the second clamping surface and the retreat position retracted from the shielding position.
  • the shielding plate when the artificial blood vessel is cut by the cutter, the shielding plate exists between the natural blood vessel and the cutter, so that the natural blood vessel can be reliably prevented from being damaged.
  • the side of the shielding plate facing the second arm may be subjected to a treatment for reducing frictional resistance.
  • the shielding plate When such a process is performed, after part of the artificial blood vessel is excised with a cutter, the shielding plate is directed to the retracted position while the artificial blood vessel and the natural blood vessel are sandwiched between the first clamping surface and the second clamping surface. Can be slid easily.
  • the first arm has an operation part operated manually, and an operation member movable in conjunction with the operation part, and when the operation member is in the first position,
  • the cutter is located in the first arm, and the operating member is in the second position, the needle is held in the cartridge, and the cutter moving mechanism Is pressed by the actuating member, so that when the cutter protrudes from the first arm and the actuating member is in the third position, the needle is held in the cartridge and the cutter is moved to the first arm.
  • the actuator is located in one arm and the operating member is in the fourth position
  • the cutter is located in the first arm and the needle moving mechanism is pressed by the operating member.
  • the positions are preferably set in this order.
  • a cutter can be made to protrude by operating an operation part and moving an operation member from a 1st position to a 2nd position, and an operation member can be made 3rd from a 2nd position.
  • the cutter can be returned into the first arm by moving to the position, and the needle can be pushed out by moving the operating member from the third position to the fourth position. Therefore, both the cutting of the artificial blood vessel and the joining with the needle can be performed only by sequentially moving one operation unit.
  • the first arm may be provided with a biasing means for biasing the cutter moving mechanism in a direction in which the cutter is housed in the first arm.
  • the cutter moving mechanism is returned to the original position by the biasing means, whereby the cutter is re-stored in the first arm. Therefore, the cutter can be securely stored in the first arm before the needle is pushed out.
  • one or a plurality of protrusions may be provided on the second clamping surface.
  • Such protrusions can suitably prevent the overlapping portion of these blood vessels from being displaced when an artificial blood vessel and a natural blood vessel are sandwiched between the first clamping surface and the second clamping surface.
  • an overlapping portion of an artificial blood vessel and a natural blood vessel including a branch blood vessel can be automatically anastomosed in a planar shape.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 2.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 2.
  • It is a disassembled perspective view of the internal structure of a 1st arm. It is a partially omitted rear view of the second arm as viewed from below.
  • It is a perspective view of an artificial blood vessel and a natural blood vessel before joining. It is a figure which shows the state which inserted the artificial blood vessel between the 1st arm and the shielding board, and inserted the natural blood vessel between the 2nd arm and the shielding board.
  • FIG. 1 is a perspective view of an anastomosis instrument 10 according to an embodiment of the present invention.
  • the anastomosis device 10 is formed by superposing artificial blood vessels that replace the aorta and natural blood vessels including a plurality of branch blood vessels that branch from the aorta (for example, the right renal artery, the superior mesenteric artery, and the celiac artery), It is a medical device for anastomosing the overlapping part.
  • the anastomosis instrument 10 can be moved forward and backward between a first arm 12 and a second arm 14 that are opposed to each other so as to be close to and away from each other and between the first arm 12 and the second arm 14.
  • the shield plate 16 disposed, and a connecting portion 18 that couples the first arm 12 and the second arm 14 in a state where the first arm 12 and the second arm 14 can be brought close to and separated from each other.
  • the blood vessel and the natural blood vessel are sandwiched in an overlapped state, and both are joined by anastomosis.
  • FIG. 2 is a plan view of the first arm 12
  • FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2
  • FIG. 4 is an exploded perspective view of the internal mechanism of the first arm 12.
  • the housing 20 that forms the outline of the first arm 12 is indicated by phantom lines so that the internal structure of the first arm 12 can be grasped.
  • the first arm 12 pushes the needle 24 from the cartridge 25 through the first clamping surface 22, the cartridge 25 that houses a plurality (a large number) of needles 24, and the first clamping surface 22.
  • a housing 20 for housing them.
  • the first clamping surface 22 is a surface that comes into contact with the inner peripheral surface of the artificial blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed.
  • the first clamping surface 22 is configured by the upper surface of the cartridge 25. Has been.
  • the cartridge 25 has a plurality (multiple) of staple holding holes 32 arranged at intervals in the circumferential direction.
  • the staple holding hole 32 passes through the upper surface (front surface) and the back surface (lower surface) of the cartridge 25, and the staple 24 is held (stored) in each of the staple holding holes 32.
  • the cartridge 25 is configured in an elliptical or oval annular shape, and is provided with an opening 25a (see FIG. 4) penetrating vertically.
  • the cartridge 25 is not limited to an elliptical or oval annular shape, and may be configured in an annular shape, a polygonal shape such as a square shape or a hexagonal shape.
  • the staple holding hole 32 includes a relatively inner first holding hole 32a and a relatively outer second holding hole 32b, and the first holding hole 32a and the second holding hole 32b. Are arranged so that the phases in the circumferential direction are shifted from each other.
  • the needle 24 is made of metal and has a portal shape.
  • the needle moving mechanism 26 includes a pusher 34 that pushes out the plurality of needles 24, and a first lever portion 36 that extends from the pusher 34 in the proximal direction.
  • the pusher 34 includes a plurality of (many) plate-like pusher pieces 38 that are the same number as the cartridge 25 holding holes, and a support portion 40 that supports these pusher pieces 38.
  • the pusher piece 38 projects vertically from the support portion 40 at a position corresponding to the staple holding hole 32.
  • the pusher piece 38 includes a relatively inner first pusher piece 38a and a relatively outer second pusher piece 38b, and the first pusher piece 38a and the second pusher piece 38b have a first holding hole. Similar to 32a and the second holding hole 32b, the circumferential phases are shifted from each other.
  • the support portion 40 is configured in an annular shape similar to the cartridge 25, and an opening portion 40a (see FIG. 4) penetrating vertically is formed at the center thereof.
  • the support portion 40 is connected to the first lever portion 36 on the base end side.
  • the support portion 40 and the first lever portion 36 may be formed integrally or may be configured by joining separate components.
  • the first lever portion 36 is movable in the vertical direction within the housing 20. As the first lever portion 36 moves up and down, the pusher 34 provided at the tip of the first lever portion 36 also moves together with the first lever portion 36. The first lever portion 36 does not move in the longitudinal direction of the first arm 12.
  • the first lever portion 36 extends in the longitudinal direction of the first arm 12 as a whole, and includes a first flat portion 42 extending from the support portion 40 in the proximal direction, and a proximal end of the first flat portion 42.
  • a first inclined portion 44 bent upward. In the initial state (before use), the first flat portion 42 is supported on the bottom of the housing 20.
  • a first tapered portion 46 is formed on the lower surface of the first inclined portion 44 so as to be inclined upward toward the proximal direction.
  • the cutter 28 has a sharp cutting edge 28 a at its upper end, and the illustrated configuration example extends along the inner peripheral surface of the cartridge 25. That is, the cutter 28 has a cylindrical shape whose cross-sectional shape is an ellipse or an ellipse.
  • the cutter moving mechanism 30 for moving the cutter 28 in and out includes a cutter support portion 48 that supports the cutter 28 and a second lever portion 50 that extends from the cutter support portion 48 in the proximal direction.
  • the second lever portion 50 is movable in the vertical direction within the housing 20. As the second lever portion 50 moves up and down, the cutter 28 provided at the tip of the second lever portion 50 also moves together with the second lever portion 50. The second lever portion 50 does not move in the longitudinal direction of the first arm 12.
  • the cutter support portion 48 is provided with a through hole 48a penetrating vertically.
  • the second lever portion 50 extends in the longitudinal direction of the first arm 12 as a whole, extends from the cutter support portion 48 in the proximal direction, and bends in a crank shape. It has the 2nd flat part 54 extended in the base end direction, and the 2nd inclination part 56 bent upwards from the base end of the 2nd flat part 54. As shown in FIG.
  • the second flat portion 54 is supported on the bottom of the housing 20.
  • the second flat portion 54 includes a first straight portion 58 constituting the distal end side, a second straight portion 60 constituting the proximal end side, and a portion between the first straight portion 58 and the second straight portion 60.
  • the first straight portion 58 and the second straight portion 60 are completely displaced in the left-right direction (without overlapping), and the second straight portion 60 and the first straight portion 58 of the first lever portion 36 are different from each other. It is arranged on the same straight line.
  • the first flat portion 42 of the first lever portion 36 and the first straight portion 58 of the second lever portion 50 are aligned in the left-right direction within the housing 20 and extend in parallel to each other.
  • a second taper portion 64 is formed on the lower surface of the second inclined portion 56 so as to be inclined upward toward the proximal direction.
  • the second lever portion 50 is elastically pressed (biased) downward by an elastic member (biasing means) 68 provided in the housing 20.
  • the elastic member 68 is a compression coil spring in the illustrated configuration example, but may be another form of elastic member such as a leaf spring.
  • an operation member 70 that is movable along the longitudinal direction of the first arm 12 (housing 20) is disposed on the proximal side of the second inclined portion 56.
  • a third tapered portion 72 is formed on the distal end surface of the operating member 70 so as to be inclined downward toward the distal end side.
  • an operation portion (lever member) 74 is provided on the side portion of the first arm 12.
  • the operation unit 74 is a part that is moved and operated manually, and a plurality of anti-slip ribs (projections) 76 are provided on the surface thereof.
  • the operation unit 74 is coupled to the operation member 70 in the housing 20 through an opening (not shown) formed through the wall of the housing 20. By operating the operation unit 74 to move along the longitudinal direction of the first arm 12, the operating member 70 coupled to the operation unit 74 is also moved integrally.
  • the operation unit 74 according to the illustrated configuration example is fixed to the operation member 70 and the operation unit 74 and the operation member 70 move in the same direction.
  • the moving direction of the actuating member 70 may be opposite to the moving direction. That is, for example, an interlocking mechanism may be provided between the operation unit 74 and the operation member 70 so that the operation member 70 moves in the distal direction when the operation unit 74 is moved in the proximal direction.
  • a center pedestal 75 is disposed inside the cutter 28, and the above-described cutter 28 is disposed in a gap between the center pedestal 75 and the cartridge 25 so as to be able to appear and retract. ing.
  • an adhesive surface 78 coated with an adhesive material is provided on the upper surface of the center pedestal 75. The position of the adhesive surface 78 is set substantially flush with the first clamping surface 22 (the surface of the cartridge 25).
  • the second arm 14 includes an openable / closable head portion 81 having a second clamping surface 80, and an arm main body 83 that supports the head portion 81, and faces the first arm 12.
  • the head portion 81 includes a first bending member 85 and a second bending member 86 that are bent or bent in opposite directions, and the first bending member 85 and the second bending member 86 are provided at the distal end portion of the arm body 83.
  • the shaft portion 87 is rotatably supported.
  • the head portion 81 In a state where the leading ends of the first bending member 85 and the second bending member 86 abut each other (the head portion 81 is closed), the head portion 81 has an elliptical shape or an elliptical shape similar to that of the cartridge 25.
  • the head portion 81 is configured in the same type of ring as the cartridge 25. Therefore, when the cartridge 25 is annular, the closed head portion 81 is also configured in an annular shape, and the cartridge 25 is polygonal. In this case, the head portion 81 in the closed state is also configured in the same kind of polygonal shape.
  • a second clamping surface 80 is provided on the lower surface of the head portion 81 (the first bending member 85 and the second bending member 86).
  • the second clamping surface 80 is a surface that comes into contact with the natural blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed, and the staple forming surface that bends the needle 24 when the plurality of needles 24 are pushed out from the cartridge 25. It is the surface which comprises.
  • the second clamping surface 80 is provided with a plurality of (many) staple forming grooves 82 which are the same number as the staple holding holes 32.
  • the staple forming groove 82 has a relatively inner first forming groove 82a and a relatively outer second forming groove 82b.
  • the first forming groove 82a and the second forming groove 82b are formed on the cartridge 25. Similar to the first holding hole 32a and the second holding hole 32b, the circumferential phases are shifted from each other.
  • a plurality of projections 88 are provided on the second clamping surface 80 of the first bending member 85 and the second bending member 86. These protrusions 88 contact the natural blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed, and serve to prevent slipping.
  • the first arm 12 and the second arm 14 are coupled to each other by a connecting portion 18 on the base end side thereof so as to be close to and away from each other.
  • the connecting portion 18 has a plurality (two in the illustrated example) of connecting shafts 90.
  • the connecting shaft 90 is disposed in parallel to each other in the longitudinal direction of the first arm 12 and the second arm 14 and passes through the first arm 12 and the second arm 14.
  • the locking member 92 is fixed.
  • the first arm 12 and the second arm 14 can be brought close to and separated from each other in a state where the first arm 12 and the second arm 14 are kept parallel to each other under the guide action of the connecting shaft 90.
  • connection part 18 of the example of illustration may replace with the connection part 18 of the example of illustration, and may employ
  • the first arm 12 and the second arm 14 are coupled to each other by a support pin at their proximal ends, and are tilted relative to each other so as to approach and separate from each other.
  • a shielding plate 16 is disposed between the first arm 12 and the second arm 14.
  • a long hole-shaped guide hole 94 is formed along the longitudinal direction of the shielding plate 16, and a plurality of connecting shafts 90 are inserted into the guide hole 94.
  • the shielding plate 16 is movable between the first arm 12 and the second arm 14 along the longitudinal direction of the first arm 12 and the second arm 14.
  • tip part of the shielding board 16 is comprised larger than the cutter 28 by planar view. Since the shielding plate 16 is movable along the longitudinal direction of the first arm 12 and the second arm 14, the shielding portion 96 is located between the first clamping surface 22 and the second clamping surface 80 (the cutter 28). And a retracted position retracted from the shielding position.
  • the side of the shielding part 96 facing the second arm 14 may be subjected to a process for reducing frictional resistance.
  • Such treatment includes, for example, coating with a hydrophilic coat and coating with a synthetic resin having lubricity (for example, PTFE).
  • a handle portion 98 is provided at the base end portion of the shielding plate 16, and the shielding portion 96 can be moved forward and backward by gripping and moving the handle portion 98.
  • the position where the handle portion 98 is provided is not limited to the base end portion, and may be on either the left or right side of the shielding plate 16 or on both sides.
  • the anastomosis instrument 10 is basically configured as described above, and the operation and effect thereof will be described below.
  • the artificial blood vessel 100 has a hollow cylindrical shape, and is made of, for example, polyester fiber, ePTFE (expanded polytetrafluoroethylene), or the like.
  • the natural blood vessel 102 is a blood vessel obtained by cutting a plurality of branch blood vessels 102a to 102c branched from the aorta from the aorta together with the aortic wall around the roots of the branch blood vessels 102a to 102c, and the branch blood vessels 102a to 102c. In the root portion, an island-like portion 103 cut out from the aorta remains.
  • the aorta is clamped and cut at the distal side from the abdominal organ blood vessel origin.
  • the cut portion of the aorta and one end of the artificial blood vessel 100 are sewn (distal anastomosis).
  • distal anastomosis When the distal anastomosis is completed, apply a blocking forceps to the aorta near the boundary between the chest and abdomen, and cut out the aorta at the origin of the abdominal organ blood vessel to an appropriate size, or expand it into a plane by incising the vessel wall To do.
  • the head portion 81 of the anastomosis device 10 is opened, and in this state, as shown in FIG. 7, the first side of the anastomosis device 10 is inserted from the central side of the artificial blood vessel 100 sewn on the distal side.
  • the arm 12 is inserted into the artificial blood vessel 100.
  • the artificial blood vessel 100 is inserted between the first arm 12 and the shielding plate 16, and the natural blood vessel 102 (island-like portion 103) is inserted between the second arm 14 and the shielding plate 16.
  • the anastomosis device 10 When the anastomosis device 10 is inserted into the artificial blood vessel 100 to a position where the plurality of branch blood vessels 102a to 102c are in the head portion 81 in a state where the position of the artificial blood vessel 100 with respect to the artificial blood vessel 100 is adjusted to a predetermined position, Is closed to enclose a plurality of branch blood vessels 102a to 102c.
  • the first arm 12 and the second arm 14 are brought close to each other, and the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched and fixed by the first arm 12 and the second arm 14.
  • the needle 24 is held in the cartridge 25, and the cutter 28 is located in the first arm 12.
  • the position of the operating member 70 at this time is referred to as a “first position”.
  • the projection 88 is provided on the second clamping surface 80, when the artificial blood vessel 100 and the natural blood vessel 102 are clamped between the first clamping surface 22 and the second clamping surface 80, The natural blood vessel 102 can be suitably prevented from shifting.
  • the operating unit 74 (see FIG. 1) is operated to further advance the operating member 70 from the first position to the “second position” shown in FIG.
  • the operation member 70 is The two lever portions 50 move forward while entering under the second straight portion 60, and as a result, the second lever portion 50 is lifted up against the elastic force of the elastic member 68 in the housing 20.
  • the cutting line at this time is an annular shape having the same shape as the cutter 28.
  • the shielding plate 16 exists between the natural blood vessel 102 and the cutter 28, so that the natural blood vessel 102 can be reliably prevented from being damaged.
  • the operating unit 74 is operated to further advance the operating member 70 from the second position to the “third position” shown in FIG. At this time, since the second lever portion 50 is disengaged from the operation member 70, the second lever portion 50 is lowered by the elastic force of the elastic member 68. Thereby, the cutter 28 provided at the tip of the second lever portion 50 is returned into the first arm 12.
  • the handle 98 provided at the base end of the shielding plate 16 is gripped, and the shielding plate 16 is moved back to the retracted position shown in FIG. In this state, the shield 96 is removed from the position facing the cutter 28 and is also retracted to a position removed from the artificial blood vessel 100.
  • the process which reduces frictional resistance is given to the side (surface which contacts the natural blood vessel 102) which opposes the 2nd arm 14 of the shielding part 96, the 1st clamping surface 22 and the 1st The shielding plate 16 can be easily slid toward the retracted position while the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched between the two clamping surfaces 80.
  • the operating unit 74 is operated to further advance the operating member 70 from the third position to the “fourth position” shown in FIG.
  • the actuating member 70 advances while entering under the first flat portion 42.
  • the first lever portion 36 is lifted in the housing 20, and the needle 24 held in the cartridge 25 is pushed up by the pusher 34 provided at the tip of the first lever portion 36, and the second clamping surface 80.
  • the needle 24 is bent by a staple forming groove 82 (see FIG. 5) provided on the needle.
  • the natural blood vessel 102 and the artificial blood vessel 100 are coupled (stapled) by the needle 24.
  • the first arm 12 and the second arm 14 are separated from each other, the head portion 81 of the second arm 14 is opened, and the anastomosis instrument 10 is pulled out from the artificial blood vessel 100.
  • an opening 100 a is formed in the artificial blood vessel 100 by cutting the cutter 28.
  • the adhesive surface 78 provided on the upper surface of the center pedestal 75 is attached with a part of the artificial blood vessel 100 (the excised piece 106) cut by the cutter 28, the anastomosis device 10 is pulled out from the artificial blood vessel 100.
  • the excision piece 106 is collected together.
  • the artificial blood vessel 100 and the natural blood vessel 102 can be joined by anastomosis as shown in FIG.
  • the artificial blood vessel 100 and the natural blood vessel 102 are overlapped, and the overlapping portion is sandwiched and fixed between the first sandwiching surface 22 and the second sandwiching surface 80.
  • the overlapping portions of the artificial blood vessel 100 and the natural blood vessel 102 can be anastomosed by pushing the plurality of needles 24 through the first clamping surface 22.
  • the artificial blood vessel 100 and the natural blood vessel 102 can be joined.
  • the anastomosis time is significantly shortened, and the individual detachment of the branch vessels 102a to 102c is reduced, so that the risk of vascular occlusion can be reduced.
  • the cutter 28 and the cutter moving mechanism 30 for moving the cutter 28 in and out are provided. Therefore, the artificial blood vessel 100 is formed by the first clamping surface 22 and the second clamping surface 80. By sandwiching the natural blood vessel 102 and projecting the cylindrical cutter 28, the opening 100a can be formed on the side surface of the artificial blood vessel 100 in a short time.
  • the plurality of needles 24 are pushed out from the cartridge 25 while the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched between the first clamping surface 22 and the second clamping surface 80, so that the peripheral portion of the formed opening 100a and the natural portion An overlapping portion of the blood vessel 102 with the island-like portion 103 can be anastomosed.
  • the formation of the opening 100a with respect to the artificial blood vessel 100 and the joining with the needle 24 can be performed with one anastomosis device 10, and the time for forming the joint portion of the artificial blood vessel 100 is further greatly reduced together with the anastomosis time. can do.
  • the shielding plate 16 is provided between the first arm 12 and the second arm 14, when the artificial blood vessel 100 is cut by the cutter 28, Since the shielding plate 16 exists between the blood vessel 102 and the cutter 28, the natural blood vessel 102 can be reliably prevented from being damaged. Moreover, since the shielding plate 16 can be retracted from the position facing the cutter 28, when the needle 24 is pushed out from the cartridge 25, the anastomosis between the artificial blood vessel 100 and the natural blood vessel 102 is reliably performed without being obstructed. Is possible.
  • the cartridge 25 is configured in an annular shape
  • the cutter 28 is cylindrical
  • the second arm 14 is provided with a head portion 81 configured to be openable and closable.
  • the closed state it forms an annular shape similar to that of the cartridge 25, and the second clamping surface 80 is provided on the side of the head portion 81 that faces the first clamping surface 22. Since it is configured in this manner, the overlapping portion of the artificial blood vessel 100 and the natural blood vessel 102 is surrounded by the natural blood vessel 102 only by the operation of moving the cutter 28 once and the pushing operation of the needle 24 once. Can be anastomosed. Therefore, the anastomosis time can be further shortened.
  • the anastomosis instrument 10 since the first arm 12 is provided with the adhesive surface 78, when the anastomosis instrument 10 is pulled out from the artificial blood vessel 100, the excision piece 106 is collected together. Therefore, the anastomosis time can be further shortened.
  • the cutter 28 can be protruded by operating the operating portion 74 to move the operating member 70 from the first position to the second position.
  • the cutter 28 can be returned into the first arm 12, and further, by moving the operating member 70 from the third position to the fourth position, The needle 24 can be pushed out. Therefore, both the cutting of the artificial blood vessel 100 and the joining with the needle 24 can be performed by simply moving the single operation unit 74 in order.
  • the cartridge 25 and the head portion 81 are configured in an annular shape so that the artificial blood vessel 100 and the natural blood vessel 102 are surrounded by the branch blood vessels 102a to 102c by one push-out operation of the needle 24.
  • an anastomosis is configured, the present invention is not limited to this configuration.
  • a part of the annular cartridge 25 and the head portion 81 may be cut out to form a C shape or a U shape.
  • the anastomosis may be performed in a plurality of times from different directions.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

An anastomosing instrument (10) is provided with: a first arm (12) having a cartridge (25) which houses needles (24) and which is configured in an annular shape; and a second arm (14) disposed so as to face the first arm (12) and having at the front end thereof a head section (81) configured in an annular shape. The first arm (12) and the second arm (14) are connected in a state in which the first arm (12) and the second arm (14) can approach and separate from each other.

Description

吻合器Anastomosis
 本発明は、外科手術において互いに分離した複数の要素を接合する吻合器に関する。 The present invention relates to an anastomosis device for joining a plurality of elements separated from each other in a surgical operation.
 大動脈瘤の手術は瘤を切除し人工血管に置き換える人工血管置換術が一般的であるが、胸腹部大動脈瘤は、「こぶ」が広範囲にわたることが多く、大動脈から各臓器(腹部臓器、腎臓、脊髄など)への分枝再建も行われる。術中の脊髄や腹部臓器への血流供給不良が起こると下半身麻痺(対麻痺)や感覚障害、排尿障害、急性腎不全を合併することがあり、腹部大動脈からの分枝再建を迅速に再開させることが重要である。 Aortic aneurysm surgery is generally an artificial blood vessel replacement that removes the aneurysm and replaces it with an artificial blood vessel. However, the thoracoabdominal aortic aneurysm often has a wide range of “kumps”, and the aorta is replaced with various organs (abdominal organs, kidneys, Branch reconstruction to the spinal cord) is also performed. Insufficient blood flow to the spinal cord and abdominal organs during surgery may cause lower body paralysis (paraplegia), sensory disturbance, dysuria, and acute renal failure, and quickly resume branch reconstruction from the abdominal aorta This is very important.
 大動脈再建では、脊髄虚血時間を短縮するため分節遮断法を用い、肋間動脈や腹部分枝は小口径の人工血管で個別に再建する「個別再建」か、島状に一括再建する「島状再建」かの2通りの手法が採られている。 For aortic reconstruction, segmental blockage is used to shorten spinal cord ischemia time, and the intercostal artery and abdominal branch are individually reconstructed with a small-diameter artificial blood vessel, or are reconstructed in an island-like manner. Two methods of “reconstruction” are adopted.
 個別再建は、吻合箇所が多い、分枝動脈を十分剥離しなければならない、細い分枝動脈を1本1本人工血管と吻合するため血管閉塞を起しやすいというデメリットがある。島状再建は、分枝動脈の剥離が不要で、血管閉塞の危険性も低く、吻合箇所が少ないので吻合部からの出血も少ないというメリットがあるが、一方で、分枝動脈の再建終了まで腹部臓器が虚血となるというリスクがある。 Individual reconstruction has the disadvantages that there are many anastomosis sites, the branch arteries must be sufficiently detached, and the thin branch arteries are anastomosed one by one with an artificial blood vessel, making it easy to cause vascular occlusion. Island reconstruction does not require branching artery detachment, has a low risk of vascular occlusion, and has fewer anatomical sites, resulting in less bleeding from the anastomosis. There is a risk that the abdominal organs become ischemic.
 従来では、手縫いで分枝動脈再建がなされているため、手縫いの手技に慣れていない術者などにおいては吻合に時間がかかり、島状再建における分枝血管再建中の腹部臓器虚血リスクは高いと考えられる。 Conventionally, branch arteries have been reconstructed by hand stitching, so it takes time for anastomosis for operators who are not familiar with hand stitching techniques, and the risk of abdominal organ ischemia during branch vessel reconstruction in island reconstruction is high it is conceivable that.
 吻合器としては、端々吻合用と端側吻合用のものがある。島状吻合は端側吻合であるが、従来の端側吻合用の吻合器では、端側の血管(分枝血管)にステントのようなものを取り付ける必要があり、これでは吻合が平面状になる島状吻合には利用できない。また。その他の自動吻合器としては、肺切除用のエンドステイプラーや消化管用のリニアステイプラー、サーキュラーステイプラー(特開2004-89442号公報参照)などがある。しかしながら、これらのステイプラーも、側面開口部に面状に組織を接合することができず、人工血管置換術の島状再建への適用は困難であり、吻合時間の大幅な短縮にはつながらないと考えられる。 There are two types of anastomosis devices for end-to-end anastomosis and end-to-end anastomosis. Insular anastomoses are end-to-side anastomoses, but conventional end-to-end anastomoses require attachment of a stent-like device to the blood vessels (branch vessels) on the end. It cannot be used for the island anastomosis. Also. Examples of other automatic anastomoses include an end stapler for lung resection, a linear stapler for the digestive tract, and a circular stapler (see Japanese Patent Application Laid-Open No. 2004-89442). However, these staplers are also unable to join tissue to the side openings, making it difficult to apply artificial blood vessel replacement to island reconstruction, and do not lead to a significant reduction in anastomosis time. It is done.
 本発明はこのような課題を考慮してなされたものであり、人工血管と分枝血管を含む天然血管との重ね合わせ部分を平面状に自動吻合することができる吻合器を提供することを目的とする。 The present invention has been made in view of such problems, and an object of the present invention is to provide an anastomosis device capable of automatically anastomosing an overlapping portion of an artificial blood vessel and a natural blood vessel including a branch blood vessel in a planar shape. And
 上記の目的を達成するため、本発明に係る吻合器は、第1挟持面と、複数の針を収納するカートリッジと、前記第1挟持面を通してカートリッジから針を押し出す針移動機構とを有する第1アームと、前記第1アームに対向して配置され、前記針が押し出された際に前記針を折り曲げるステープル成形面を構成する第2挟持面を有する第2アームと、を備え、前記第1アームと前記第2アームとは、互いに近接及び離間可能な状態で連結され、前記カートリッジは、環状の少なくとも一部を構成するように湾曲又は屈曲して延在し、前記第2挟持面は、少なくとも前記カートリッジの延在形状に沿って延在することを特徴とする。 In order to achieve the above object, an anastomotic apparatus according to the present invention includes a first clamping surface, a cartridge that houses a plurality of needles, and a needle moving mechanism that pushes out a needle from the cartridge through the first clamping surface. An arm and a second arm having a second clamping surface that is disposed opposite to the first arm and forms a staple forming surface that bends the needle when the needle is pushed out. And the second arm are connected so as to be close to and away from each other, and the cartridge extends so as to be curved or bent so as to form at least a part of an annular shape, and the second clamping surface includes at least The cartridge extends along the extended shape of the cartridge.
 上記の本発明の構成によれば、人工血管と分枝血管を含む天然血管とを重ね合わせ、この重なり部分を第1挟持面と第2挟持面とで挟持固定し、この状態で第1挟持面を通して複数の針を押し出すことで、人工血管と天然血管との重なり部分を吻合できる。これにより、人工血管と天然血管とを接合することができる。したがって、従来技術(手縫い)と比べ、吻合時間が大幅に短縮されるとともに、分枝血管の剥離が少なくて済むため血管閉塞のリスク低減を図ることが可能である。 According to the configuration of the present invention described above, the artificial blood vessel and the natural blood vessel including the branch blood vessel are overlapped, and the overlapping portion is sandwiched and fixed between the first sandwiching surface and the second sandwiching surface, and the first sandwiching is performed in this state. By extruding a plurality of needles through the surface, the overlapping portion of the artificial blood vessel and the natural blood vessel can be anastomosed. Thereby, an artificial blood vessel and a natural blood vessel can be joined. Therefore, compared with the prior art (hand-sewn), the anastomosis time is significantly shortened, and the branch vessel detachment can be reduced, so that the risk of vascular occlusion can be reduced.
 上記の吻合器において、前記第1アームは、前記第1挟持面に対して出没可能であり且つ前記カートリッジの内側で当該カートリッジの内周に沿って延在するカッタと、前記カッタを出没移動させるカッタ移動機構とを有するとよい。 In the anastomosis apparatus, the first arm can protrude and retract with respect to the first clamping surface and extends along the inner periphery of the cartridge inside the cartridge, and moves the cutter into and out of the cutter. It is preferable to have a cutter moving mechanism.
 上記の構成によれば、第1挟持面と第2挟持面とで人工血管と天然血管とを挟み込み、カッタを突出させることで、人工血管の側面に開口部を瞬時に形成することができる。そして、第1挟持面と第2挟持面とで人工血管と天然血管とを挟んだまま、カートリッジから複数の針を押し出すことで、人工血管に形成した開口部の周囲部分と天然血管との重なり部分を吻合することができる。このように、吻合器ひとつで、人工血管に対する開口部の形成と、針による接合とを実施することができ、吻合時間とともに人工血管接合部の形成時間をより一層大幅に短縮することができる。 According to the above configuration, an opening can be instantaneously formed on the side surface of the artificial blood vessel by sandwiching the artificial blood vessel and the natural blood vessel between the first clamping surface and the second clamping surface and projecting the cutter. Then, the plurality of needles are pushed out from the cartridge while the artificial blood vessel and the natural blood vessel are sandwiched between the first clamping surface and the second clamping surface, whereby the peripheral portion of the opening formed in the artificial blood vessel overlaps with the natural blood vessel. The parts can be anastomosed. Thus, the formation of the opening to the artificial blood vessel and the joining with the needle can be performed with one anastomosis device, and the formation time of the artificial blood vessel joint can be further greatly shortened together with the anastomosis time.
 上記の吻合器において、前記カートリッジは、環状に構成され、前記カッタは、筒型カッタであり、前記第2アームには、開閉可能に構成されたヘッド部が設けられ、前記ヘッド部は、閉じた状態で、前記カートリッジと同様の環状をなし、前記第2挟持面は、前記ヘッド部の、前記第1挟持面に対向する側に設けられるとよい。 In the anastomosis apparatus, the cartridge is configured in an annular shape, the cutter is a cylindrical cutter, the second arm is provided with a head portion that can be opened and closed, and the head portion is closed. In this state, the same annular shape as that of the cartridge is formed, and the second clamping surface is preferably provided on the side of the head portion that faces the first clamping surface.
 上記の構成によれば、一回のカッタの出没動作と、一回の針の押出し動作だけで、人工血管と天然血管との重なり部分を、天然血管の分枝血管を囲むように吻合することができる。よって、吻合時間をより短縮することができる。 According to the above configuration, the overlapping portion of the artificial blood vessel and the natural blood vessel is anastomosed so as to surround the branch blood vessel of the natural blood vessel by only one cutter intrusion operation and one needle push-out operation. Can do. Therefore, the anastomosis time can be further shortened.
 上記の吻合器において、前記第1アームにおいて前記第2アームに対向する側であって平面視でカッタの内側に、粘着面が設けられるとよい。 In the above-mentioned anastomosis instrument, an adhesive surface may be provided on the side of the first arm facing the second arm and inside the cutter in plan view.
 このように粘着面が設けられることで、カッタにより人工血管を切断した際、切断された人工血管の一部(切除片)が粘着面に付着する。このため、吻合器を人工血管から引き出す際に、切除片が一緒に回収されるため、吻合時間をより短縮することが可能である。 By providing the adhesive surface in this way, when the artificial blood vessel is cut by the cutter, a part of the cut artificial blood vessel (resection piece) adheres to the adhesive surface. For this reason, when the anastomosis device is pulled out from the artificial blood vessel, the excision pieces are collected together, so that the anastomosis time can be further shortened.
 上記の吻合器において、前記第1アームと前記第2アームとの間に、前記カッタが第2アーム側に突出したときに前記カッタに当接する遮蔽板を備え、前記遮蔽板は、前記第1挟持面と前記第2挟持面との間の遮蔽位置と、当該遮蔽位置から退避した退避位置とに変位可能であるとよい。 In the anastomosis instrument, a shielding plate that comes into contact with the cutter when the cutter protrudes toward the second arm is provided between the first arm and the second arm, and the shielding plate includes the first arm and the second arm. It is good to be displaceable to the shielding position between the clamping surface and the second clamping surface and the retreat position retracted from the shielding position.
 このような遮蔽板を設けることで、カッタにより人工血管を切断する際に、天然血管とカッタとの間に遮蔽板が存在するため、天然血管を損傷することを確実に防止できる。 By providing such a shielding plate, when the artificial blood vessel is cut by the cutter, the shielding plate exists between the natural blood vessel and the cutter, so that the natural blood vessel can be reliably prevented from being damaged.
 上記の吻合器において、前記遮蔽板の前記第2アームに対向する側には、摩擦抵抗を低減する処理が施されているとよい。 In the anastomosis instrument, the side of the shielding plate facing the second arm may be subjected to a treatment for reducing frictional resistance.
 このような処理を施した場合、カッタにより人工血管の一部を切除した後に、第1挟持面と第2挟持面とで人工血管と天然血管とを挟んだまま、遮蔽板を退避位置に向けて容易にスライドさせることができる。 When such a process is performed, after part of the artificial blood vessel is excised with a cutter, the shielding plate is directed to the retracted position while the artificial blood vessel and the natural blood vessel are sandwiched between the first clamping surface and the second clamping surface. Can be slid easily.
 上記の吻合器において、前記第1アームは、人手によって操作する操作部と、前記操作部に連動して移動可能な作動部材とを有し、前記作動部材が第1の位置にあるとき、前記針が前記カートリッジ内に保持されるとともに、前記カッタが第1アーム内に位置し、前記作動部材が第2の位置にあるとき、前記針が前記カートリッジ内に保持されるとともに、前記カッタ移動機構が前記作動部材によって押圧されることで、前記カッタが前記第1アームから突出し、前記作動部材が第3の位置にあるとき、前記針が前記カートリッジ内に保持されるとともに、前記カッタが前記第1アーム内に位置し、前記作動部材が第4の位置にあるとき、前記カッタが前記第1アーム内に位置するとともに、前記針移動機構が前記作動部材によって押圧されることで、前記針が前記カートリッジから押し出され、前記第1の位置、前記第2の位置、前記第3の位置、前記第4の位置は、第1アームの一側から他側に向かって、この順で位置設定されているとよい。 In the anastomosis instrument, the first arm has an operation part operated manually, and an operation member movable in conjunction with the operation part, and when the operation member is in the first position, When the needle is held in the cartridge, the cutter is located in the first arm, and the operating member is in the second position, the needle is held in the cartridge, and the cutter moving mechanism Is pressed by the actuating member, so that when the cutter protrudes from the first arm and the actuating member is in the third position, the needle is held in the cartridge and the cutter is moved to the first arm. When the actuator is located in one arm and the operating member is in the fourth position, the cutter is located in the first arm and the needle moving mechanism is pressed by the operating member. Thus, the needle is pushed out of the cartridge, and the first position, the second position, the third position, and the fourth position are moved from one side of the first arm toward the other side. The positions are preferably set in this order.
 上記の構成によれば、操作部を操作して作動部材を第1の位置から第2の位置に移動させることで、カッタを突出させることができ、作動部材を第2の位置から第3の位置に移動させることで、カッタを第1アーム内に戻すことができ、さらに、作動部材を第3の位置から第4の位置に移動させることで、針を押し出すことができる。よって、1つの操作部を順に移動させていくだけで、人工血管の切断と針による接合の両方を行うことができる。 According to said structure, a cutter can be made to protrude by operating an operation part and moving an operation member from a 1st position to a 2nd position, and an operation member can be made 3rd from a 2nd position. The cutter can be returned into the first arm by moving to the position, and the needle can be pushed out by moving the operating member from the third position to the fourth position. Therefore, both the cutting of the artificial blood vessel and the joining with the needle can be performed only by sequentially moving one operation unit.
 上記の吻合器において、前記第1アームには、前記カッタを前記第1アーム内に収納する方向に前記カッタ移動機構を付勢する付勢手段が設けられるとよい。 In the anastomosis instrument, the first arm may be provided with a biasing means for biasing the cutter moving mechanism in a direction in which the cutter is housed in the first arm.
 これにより、作動部材が第2の位置から第3の位置に移動した際に、付勢手段によってカッタ移動機構が元の位置に戻り、これによりカッタが第1アーム内に再収納される。よって、針を押し出す前の時点でカッタを第1アーム内に確実に収納しておくことができる。 Thereby, when the actuating member moves from the second position to the third position, the cutter moving mechanism is returned to the original position by the biasing means, whereby the cutter is re-stored in the first arm. Therefore, the cutter can be securely stored in the first arm before the needle is pushed out.
 上記の吻合器において、前記第2挟持面には、1つ又は複数の突起が設けられるとよい。 In the anastomosis instrument described above, one or a plurality of protrusions may be provided on the second clamping surface.
 このような突起により、第1挟持面と第2挟持面との間で人工血管と天然血管とを挟持した際に、これらの血管の重ね合わせ部分がずれることを好適に防止することができる。 Such protrusions can suitably prevent the overlapping portion of these blood vessels from being displaced when an artificial blood vessel and a natural blood vessel are sandwiched between the first clamping surface and the second clamping surface.
 本発明の吻合器によれば、人工血管と分枝血管を含む天然血管との重ね合わせ部分を平面状に自動吻合することができる。 According to the anastomosis instrument of the present invention, an overlapping portion of an artificial blood vessel and a natural blood vessel including a branch blood vessel can be automatically anastomosed in a planar shape.
本発明の一実施形態に係る吻合器の斜視図である。It is a perspective view of the anastomosis device concerning one embodiment of the present invention. 図1に示す吻合器の一部を構成する第1アームの内部構造を示す平面図である。It is a top view which shows the internal structure of the 1st arm which comprises a part of anastomosis instrument shown in FIG. 図2におけるIII-III線に沿った断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2. 第1アームの内部構成の分解斜視図である。It is a disassembled perspective view of the internal structure of a 1st arm. 第2アームを下側から見た一部省略裏面図である。It is a partially omitted rear view of the second arm as viewed from below. 接合する前の人工血管と天然血管の斜視図である。It is a perspective view of an artificial blood vessel and a natural blood vessel before joining. 人工血管を第1アームと遮蔽板との間に挿入するとともに、天然血管を第2アームと遮蔽板との間に挿入した状態を示す図である。It is a figure which shows the state which inserted the artificial blood vessel between the 1st arm and the shielding board, and inserted the natural blood vessel between the 2nd arm and the shielding board. 人工血管と天然血管とを重ねて、吻合器の第1アームと第2アームとの間に挟んだ状態を示す図である。It is a figure which shows the state which accumulated the artificial blood vessel and the natural blood vessel, and was pinched | interposed between the 1st arm and the 2nd arm of the anastomosis device. 第1アームからカッタを突出させて人工血管の一部を切断した状態を示す図である。It is a figure which shows the state which protruded the cutter from the 1st arm and cut | disconnected a part of artificial blood vessel. 人工血管の一部を切断した後、第1アーム内に再びカッタを収納した状態を示す図である。It is a figure which shows the state which accommodated the cutter again in the 1st arm, after cutting a part of artificial blood vessel. カッタを第1アーム内に収納した後、遮蔽板を後退させた状態を示す図である。It is a figure which shows the state which retracted the shielding board, after accommodating a cutter in a 1st arm. 針を押し出して人工血管と天然血管とを針で結合した状態を示す図である。It is a figure which shows the state which pushed out the needle | hook and couple | bonded the artificial blood vessel and the natural blood vessel with the needle | hook. 第1アームと第2アームとを離間させて人工血管及び天然血管に対する固定を解除した状態を示す図である。It is a figure which shows the state which released | separated the artificial blood vessel and the natural blood vessel by separating the 1st arm and the 2nd arm. 接合した後の人工血管と天然血管の斜視図である。It is a perspective view of the artificial blood vessel and the natural blood vessel after joining.
 以下、本発明に係る吻合器について好適な実施の形態を挙げ、添付の図面を参照しながら説明する。 Hereinafter, preferred embodiments of the anastomosis apparatus according to the present invention will be described with reference to the accompanying drawings.
 本発明の一実施形態に係る吻合器10の斜視図である。この吻合器10は、大動脈に置換する人工血管と、大動脈から分枝する複数の分枝血管(例えば、右腎動脈、上腸間膜動脈、腹腔動脈)を含む天然血管とを重ね合わせて、その重なり部分を吻合するための医療機器である。 1 is a perspective view of an anastomosis instrument 10 according to an embodiment of the present invention. The anastomosis device 10 is formed by superposing artificial blood vessels that replace the aorta and natural blood vessels including a plurality of branch blood vessels that branch from the aorta (for example, the right renal artery, the superior mesenteric artery, and the celiac artery), It is a medical device for anastomosing the overlapping part.
 図1に示すように、吻合器10は、互いに近接及び離間可能に対向配置された第1アーム12及び第2アーム14と、第1アーム12と第2アーム14との間に進退移動可能に配置された遮蔽板16と、第1アーム12と第2アーム14とを近接及び離間可能な状態で結合する連結部18とを備え、第1アーム12と第2アーム14との間に、人工血管と天然血管とを重ね合わせ状態で挟み込み、両者を吻合によって接合するように構成されている。 As shown in FIG. 1, the anastomosis instrument 10 can be moved forward and backward between a first arm 12 and a second arm 14 that are opposed to each other so as to be close to and away from each other and between the first arm 12 and the second arm 14. The shield plate 16 disposed, and a connecting portion 18 that couples the first arm 12 and the second arm 14 in a state where the first arm 12 and the second arm 14 can be brought close to and separated from each other. The blood vessel and the natural blood vessel are sandwiched in an overlapped state, and both are joined by anastomosis.
 図2は、第1アーム12の平面図であり、図3は、図2にIII-III線に沿った断面図であり、図4は、第1アーム12の内部機構の分解斜視図である。ただし、図2では、第1アーム12の内部構造を把握できるように、第1アーム12の外郭を構成するハウジング20を仮想線で示している。 2 is a plan view of the first arm 12, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is an exploded perspective view of the internal mechanism of the first arm 12. . However, in FIG. 2, the housing 20 that forms the outline of the first arm 12 is indicated by phantom lines so that the internal structure of the first arm 12 can be grasped.
 図2~図4に示すように、第1アーム12は、第1挟持面22と、複数(多数)の針24を収納するカートリッジ25と、第1挟持面22を通してカートリッジ25から針24を押し出す針移動機構26と、第1挟持面22に対して出没可能であり且つカートリッジ25の内側で当該カートリッジ25の内周に沿って延在するカッタ28と、カッタ28を出没移動させるカッタ移動機構30と、これらを収容するハウジング20とを備える。 As shown in FIGS. 2 to 4, the first arm 12 pushes the needle 24 from the cartridge 25 through the first clamping surface 22, the cartridge 25 that houses a plurality (a large number) of needles 24, and the first clamping surface 22. A needle moving mechanism 26, a cutter 28 that can protrude and retract with respect to the first clamping surface 22, and extends along the inner periphery of the cartridge 25 inside the cartridge 25, and a cutter moving mechanism 30 that moves the cutter 28 in and out. And a housing 20 for housing them.
 第1挟持面22は、人工血管と天然血管とを吻合する際に、人工血管の内周面に接触する面であり、図示した構成例では、カートリッジ25の上面によって第1挟持面22が構成されている。 The first clamping surface 22 is a surface that comes into contact with the inner peripheral surface of the artificial blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed. In the illustrated configuration example, the first clamping surface 22 is configured by the upper surface of the cartridge 25. Has been.
 カートリッジ25は、周方向に間隔をおいて配設された複数(多数)のステープル保持孔32を有している。ステープル保持孔32は、カートリッジ25の上面(表面)及び裏面(下面)を貫通しており、ステープル保持孔32の各々に針24が保持(収納)されている。本実施形態において、カートリッジ25は、楕円形又は長円形の環状に構成され、上下に貫通する開口部25a(図4参照)が設けられている。カートリッジ25は、楕円形又は長円形の環状に限らず、円環状や、四角環状、六角環状等の多角環状に構成されてもよい。 The cartridge 25 has a plurality (multiple) of staple holding holes 32 arranged at intervals in the circumferential direction. The staple holding hole 32 passes through the upper surface (front surface) and the back surface (lower surface) of the cartridge 25, and the staple 24 is held (stored) in each of the staple holding holes 32. In the present embodiment, the cartridge 25 is configured in an elliptical or oval annular shape, and is provided with an opening 25a (see FIG. 4) penetrating vertically. The cartridge 25 is not limited to an elliptical or oval annular shape, and may be configured in an annular shape, a polygonal shape such as a square shape or a hexagonal shape.
 図示した構成例において、ステープル保持孔32には、相対的に内側の第1保持孔32aと、相対的に外側の第2保持孔32bとがあり、第1保持孔32aと第2保持孔32bとは、互いに周方向の位相がずれて配置されている。針24は、金属製であり、門型状に形成されている。 In the illustrated configuration example, the staple holding hole 32 includes a relatively inner first holding hole 32a and a relatively outer second holding hole 32b, and the first holding hole 32a and the second holding hole 32b. Are arranged so that the phases in the circumferential direction are shifted from each other. The needle 24 is made of metal and has a portal shape.
 針移動機構26は、複数の針24を押し出すプッシャー34と、プッシャー34から基端方向に延出した第1レバー部36とを有する。プッシャー34は、カートリッジ25保持孔と同数の複数(多数)の板状のプッシャー片38と、これらのプッシャー片38を支持する支持部40とを有する。 The needle moving mechanism 26 includes a pusher 34 that pushes out the plurality of needles 24, and a first lever portion 36 that extends from the pusher 34 in the proximal direction. The pusher 34 includes a plurality of (many) plate-like pusher pieces 38 that are the same number as the cartridge 25 holding holes, and a support portion 40 that supports these pusher pieces 38.
 プッシャー片38は、ステープル保持孔32に対応する位置において支持部40から垂直に突出している。プッシャー片38には、相対的に内側の第1プッシャー片38aと、相対的に外側の第2プッシャー片38bとがあり、第1プッシャー片38aと第2プッシャー片38bとは、第1保持孔32aと第2保持孔32bと同様に、互いに周方向の位相がずれて配置されている。 The pusher piece 38 projects vertically from the support portion 40 at a position corresponding to the staple holding hole 32. The pusher piece 38 includes a relatively inner first pusher piece 38a and a relatively outer second pusher piece 38b, and the first pusher piece 38a and the second pusher piece 38b have a first holding hole. Similar to 32a and the second holding hole 32b, the circumferential phases are shifted from each other.
 支持部40は、図示した構成例では、カートリッジ25と同様の環状に構成され、その中心部には、上下に貫通する開口部40a(図4参照)が形成されている。支持部40は、その基端側にて第1レバー部36に繋がっている。支持部40と第1レバー部36とは、一体に形成してもよく、別々の部品を接合して構成してものでもよい。 In the illustrated configuration example, the support portion 40 is configured in an annular shape similar to the cartridge 25, and an opening portion 40a (see FIG. 4) penetrating vertically is formed at the center thereof. The support portion 40 is connected to the first lever portion 36 on the base end side. The support portion 40 and the first lever portion 36 may be formed integrally or may be configured by joining separate components.
 第1レバー部36は、ハウジング20内で上下方向に移動可能である。第1レバー部36の上下の移動に伴って、第1レバー部36の先端に設けられたプッシャー34も第1レバー部36と一体となって移動する。第1レバー部36は、第1アーム12の長手方向には移動しない。 The first lever portion 36 is movable in the vertical direction within the housing 20. As the first lever portion 36 moves up and down, the pusher 34 provided at the tip of the first lever portion 36 also moves together with the first lever portion 36. The first lever portion 36 does not move in the longitudinal direction of the first arm 12.
 第1レバー部36は、全体として第1アーム12の長手方向に延在しており、支持部40から基端方向に延出した第1平坦部42と、第1平坦部42の基端から上方に屈曲した第1傾斜部44とを有する。初期状態(使用前)において、第1平坦部42は、ハウジング20の底部に支持される。第1傾斜部44の下面には、基端方向に向かって上方に寄るように傾斜する第1テーパ部46が形成される。 The first lever portion 36 extends in the longitudinal direction of the first arm 12 as a whole, and includes a first flat portion 42 extending from the support portion 40 in the proximal direction, and a proximal end of the first flat portion 42. A first inclined portion 44 bent upward. In the initial state (before use), the first flat portion 42 is supported on the bottom of the housing 20. A first tapered portion 46 is formed on the lower surface of the first inclined portion 44 so as to be inclined upward toward the proximal direction.
 カッタ28は、その上端に鋭利な刃先28aを有し、図示した構成例は、カートリッジ25の内周面に沿って延在している。すなわち、カッタ28は、断面形状が長円形状又は楕円形状の筒型である。このカッタ28を出没移動させるためのカッタ移動機構30は、カッタ28を支持するカッタ支持部48と、このカッタ支持部48から基端方向に延出した第2レバー部50とを有する。 The cutter 28 has a sharp cutting edge 28 a at its upper end, and the illustrated configuration example extends along the inner peripheral surface of the cartridge 25. That is, the cutter 28 has a cylindrical shape whose cross-sectional shape is an ellipse or an ellipse. The cutter moving mechanism 30 for moving the cutter 28 in and out includes a cutter support portion 48 that supports the cutter 28 and a second lever portion 50 that extends from the cutter support portion 48 in the proximal direction.
 第2レバー部50は、ハウジング20内で上下方向に移動可能である。第2レバー部50の上下の移動に伴って、第2レバー部50の先端に設けられたカッタ28も第2レバー部50と一体となって移動する。第2レバー部50は、第1アーム12の長手方向には移動しない。 The second lever portion 50 is movable in the vertical direction within the housing 20. As the second lever portion 50 moves up and down, the cutter 28 provided at the tip of the second lever portion 50 also moves together with the second lever portion 50. The second lever portion 50 does not move in the longitudinal direction of the first arm 12.
 カッタ支持部48には、上下に貫通する貫通孔48aが設けられている。第2レバー部50は、全体として第1アーム12の長手方向に延在しており、カッタ支持部48から基端方向に延出するとともにクランク状に屈曲した屈曲部52と、屈曲部52から基端方向に延出した第2平坦部54と、第2平坦部54の基端から上方に屈曲した第2傾斜部56とを有する。 The cutter support portion 48 is provided with a through hole 48a penetrating vertically. The second lever portion 50 extends in the longitudinal direction of the first arm 12 as a whole, extends from the cutter support portion 48 in the proximal direction, and bends in a crank shape. It has the 2nd flat part 54 extended in the base end direction, and the 2nd inclination part 56 bent upwards from the base end of the 2nd flat part 54. As shown in FIG.
 初期状態において、第2平坦部54は、ハウジング20の底部に支持される。第2平坦部54は、先端側を構成する第1直線部58と、基端側を構成する第2直線部60と、第1直線部58と第2直線部60との間を構成し第1直線部58及び第2直線部60に対して水平方向に傾斜した中間部62とを有する。 In the initial state, the second flat portion 54 is supported on the bottom of the housing 20. The second flat portion 54 includes a first straight portion 58 constituting the distal end side, a second straight portion 60 constituting the proximal end side, and a portion between the first straight portion 58 and the second straight portion 60. An intermediate portion 62 inclined in the horizontal direction with respect to the first straight portion 58 and the second straight portion 60.
 第1直線部58と第2直線部60とは、左右方向の位置が完全に(重複することなく)ずれており、第2直線部60と第1レバー部36の第1直線部58とが同一直線上に配置されている。第1レバー部36の第1平坦部42と、第2レバー部50の第1直線部58とは、ハウジング20内で左右方向に並び、互いに平行に延在している。第2傾斜部56の下面には、基端方向に向かって上方に寄るように傾斜する第2テーパ部64が形成される。 The first straight portion 58 and the second straight portion 60 are completely displaced in the left-right direction (without overlapping), and the second straight portion 60 and the first straight portion 58 of the first lever portion 36 are different from each other. It is arranged on the same straight line. The first flat portion 42 of the first lever portion 36 and the first straight portion 58 of the second lever portion 50 are aligned in the left-right direction within the housing 20 and extend in parallel to each other. A second taper portion 64 is formed on the lower surface of the second inclined portion 56 so as to be inclined upward toward the proximal direction.
 第2レバー部50は、ハウジング20内に設けられた弾性部材(付勢手段)68により、下方向に弾性的に押圧(付勢)されている。図3に示す状態では、第2レバー部50は、ハウジング20の底部に押し付けられている。弾性部材68は、図示した構成例では、圧縮コイルバネであるが、板バネ等、他の形態の弾性部材であってもよい。 The second lever portion 50 is elastically pressed (biased) downward by an elastic member (biasing means) 68 provided in the housing 20. In the state shown in FIG. 3, the second lever portion 50 is pressed against the bottom of the housing 20. The elastic member 68 is a compression coil spring in the illustrated configuration example, but may be another form of elastic member such as a leaf spring.
 ハウジング20内において、第2傾斜部56よりも基端側には、第1アーム12(ハウジング20)の長手方向に沿って移動可能な作動部材70が配置されている。この作動部材70の先端面には、先端側に向かって下方に寄るように傾斜する第3テーパ部72が形成されている。 In the housing 20, an operation member 70 that is movable along the longitudinal direction of the first arm 12 (housing 20) is disposed on the proximal side of the second inclined portion 56. A third tapered portion 72 is formed on the distal end surface of the operating member 70 so as to be inclined downward toward the distal end side.
 図1及び図2に示すように、第1アーム12の側部には、操作部(レバー部材)74が設けられている。この操作部74は、人手によって移動操作される部分であり、その表面には、滑り止め用の複数のリブ(突起)76が設けられている。操作部74は、ハウジング20の壁に貫通形成された図示しない開口部を通して、ハウジング20内で作動部材70に結合されている。このような操作部74を第1アーム12の長手方向に沿って移動操作することで、操作部74に結合された作動部材70も一体的に移動する。 As shown in FIGS. 1 and 2, an operation portion (lever member) 74 is provided on the side portion of the first arm 12. The operation unit 74 is a part that is moved and operated manually, and a plurality of anti-slip ribs (projections) 76 are provided on the surface thereof. The operation unit 74 is coupled to the operation member 70 in the housing 20 through an opening (not shown) formed through the wall of the housing 20. By operating the operation unit 74 to move along the longitudinal direction of the first arm 12, the operating member 70 coupled to the operation unit 74 is also moved integrally.
 なお、図示した構成例に係る操作部74は、作動部材70に一定的に固定され、操作部74と作動部材70とが同一方向に移動するが、このような構成に限らず、操作部74の移動方向と作動部材70の移動方向とが逆方向であってもよい。すなわち、例えば、操作部74を基端方向に移動させると、作動部材70が先端方向に移動するように、操作部74と作動部材70との間に、連動機構を設けてもよい。 Note that the operation unit 74 according to the illustrated configuration example is fixed to the operation member 70 and the operation unit 74 and the operation member 70 move in the same direction. The moving direction of the actuating member 70 may be opposite to the moving direction. That is, for example, an interlocking mechanism may be provided between the operation unit 74 and the operation member 70 so that the operation member 70 moves in the distal direction when the operation unit 74 is moved in the proximal direction.
 図3及び図4に示すように、カッタ28の内側には、センター台座75が配置されており、このセンター台座75とカートリッジ25との間の隙間に、上述したカッタ28が出没可能に配置されている。センター台座75の上面には、粘着性の材料が塗布された粘着面78が設けられている。粘着面78の位置は、第1挟持面22(カートリッジ25の表面)と略面一に設定されている。 As shown in FIGS. 3 and 4, a center pedestal 75 is disposed inside the cutter 28, and the above-described cutter 28 is disposed in a gap between the center pedestal 75 and the cartridge 25 so as to be able to appear and retract. ing. On the upper surface of the center pedestal 75, an adhesive surface 78 coated with an adhesive material is provided. The position of the adhesive surface 78 is set substantially flush with the first clamping surface 22 (the surface of the cartridge 25).
 図1及び図5に示すように、第2アーム14は、第2挟持面80を有する開閉可能なヘッド部81と、ヘッド部81を支持するアーム本体83とを備え、第1アーム12に対向配置されている。ヘッド部81は、互いに反対方向に湾曲又は屈曲した第1湾曲部材85及び第2湾曲部材86を有し、第1湾曲部材85及び第2湾曲部材86は、アーム本体83の先端部に設けられた軸部87にて回転可能に軸支されている。第1湾曲部材85と第2湾曲部材86の先端同士が突き当たった状態(ヘッド部81が閉じた状態)で、ヘッド部81は、カートリッジ25と同様の長円形状又は楕円形状となる。 As shown in FIGS. 1 and 5, the second arm 14 includes an openable / closable head portion 81 having a second clamping surface 80, and an arm main body 83 that supports the head portion 81, and faces the first arm 12. Has been placed. The head portion 81 includes a first bending member 85 and a second bending member 86 that are bent or bent in opposite directions, and the first bending member 85 and the second bending member 86 are provided at the distal end portion of the arm body 83. The shaft portion 87 is rotatably supported. In a state where the leading ends of the first bending member 85 and the second bending member 86 abut each other (the head portion 81 is closed), the head portion 81 has an elliptical shape or an elliptical shape similar to that of the cartridge 25.
 なお、ヘッド部81は、カートリッジ25と同種の環状に構成されるものであり、したがって、カートリッジ25が円環状の場合、閉じた状態のヘッド部81も円環状に構成され、カートリッジ25が多角形状の場合、閉じた状態のヘッド部81も同種の多角形状に構成される。 The head portion 81 is configured in the same type of ring as the cartridge 25. Therefore, when the cartridge 25 is annular, the closed head portion 81 is also configured in an annular shape, and the cartridge 25 is polygonal. In this case, the head portion 81 in the closed state is also configured in the same kind of polygonal shape.
 図5に示すように、ヘッド部81(第1湾曲部材85及び第2湾曲部材86)の下面には、第2挟持面80が設けられている。第2挟持面80は、人工血管と天然血管とを吻合する際に、天然血管に接触する面であるとともに、カートリッジ25から複数の針24が押し出された際に当該針24を折り曲げるステープル成形面を構成する面である。 As shown in FIG. 5, a second clamping surface 80 is provided on the lower surface of the head portion 81 (the first bending member 85 and the second bending member 86). The second clamping surface 80 is a surface that comes into contact with the natural blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed, and the staple forming surface that bends the needle 24 when the plurality of needles 24 are pushed out from the cartridge 25. It is the surface which comprises.
 このため、第2挟持面80には、ステープル保持孔32と同数の複数(多数)のステープル成形溝82が設けられている。ステープル成形溝82には、相対的に内側の第1成形溝82aと、相対的に外側の第2成形溝82bとがあり、第1成形溝82aと第2成形溝82bとは、カートリッジ25の第1保持孔32aと第2保持孔32bと同様に、互いに周方向の位相がずれて配置されている。 For this reason, the second clamping surface 80 is provided with a plurality of (many) staple forming grooves 82 which are the same number as the staple holding holes 32. The staple forming groove 82 has a relatively inner first forming groove 82a and a relatively outer second forming groove 82b. The first forming groove 82a and the second forming groove 82b are formed on the cartridge 25. Similar to the first holding hole 32a and the second holding hole 32b, the circumferential phases are shifted from each other.
 また、第1湾曲部材85及び第2湾曲部材86における第2挟持面80には、複数の突起88が設けられている。これらの突起88は、人工血管と天然血管とを吻合する際に、天然血管に接触して滑り止めの作用をなすものである。 Further, a plurality of projections 88 are provided on the second clamping surface 80 of the first bending member 85 and the second bending member 86. These protrusions 88 contact the natural blood vessel when the artificial blood vessel and the natural blood vessel are anastomosed, and serve to prevent slipping.
 図1に示すように、第1アーム12と第2アーム14とは、それらの基端側で連結部18によって、互いに近接及び離間可能に結合されている。連結部18は、複数の(図示例では、2つ)の連結シャフト90を有する。連結シャフト90は、第1アーム12及び第2アーム14の長手方向に互いに間隔をおいて平行に配置され、第1アーム12及び第2アーム14を貫通し、それらの両端部には抜け止め用の係止部材92が固定されている。これにより、第1アーム12及び第2アーム14は、連結シャフト90のガイド作用下に、互いに平行を保持した状態で近接及び離間可能となっている。 As shown in FIG. 1, the first arm 12 and the second arm 14 are coupled to each other by a connecting portion 18 on the base end side thereof so as to be close to and away from each other. The connecting portion 18 has a plurality (two in the illustrated example) of connecting shafts 90. The connecting shaft 90 is disposed in parallel to each other in the longitudinal direction of the first arm 12 and the second arm 14 and passes through the first arm 12 and the second arm 14. The locking member 92 is fixed. Thus, the first arm 12 and the second arm 14 can be brought close to and separated from each other in a state where the first arm 12 and the second arm 14 are kept parallel to each other under the guide action of the connecting shaft 90.
 なお、図示例の連結部18に代えて、ヒンジ構造により構成された連結部を採用してもよい。この場合、第1アーム12及び第2アーム14は、それらの基端側で支持ピンにて回動可能に結合され、互いに相対的に傾動することで、近接及び離間する。 In addition, it may replace with the connection part 18 of the example of illustration, and may employ | adopt the connection part comprised by the hinge structure. In this case, the first arm 12 and the second arm 14 are coupled to each other by a support pin at their proximal ends, and are tilted relative to each other so as to approach and separate from each other.
 図1及び図3に示すように、第1アーム12と第2アーム14との間には、遮蔽板16が配置されている。この遮蔽板16の基端側には、遮蔽板16の長手方向に沿った長孔状のガイド孔94が形成されており、このガイド孔94に複数の連結シャフト90が挿通されている。これにより、遮蔽板16は、第1アーム12と第2アーム14との間で、第1アーム12及び第2アーム14の長手方向に沿って移動可能となっている。 As shown in FIGS. 1 and 3, a shielding plate 16 is disposed between the first arm 12 and the second arm 14. On the base end side of the shielding plate 16, a long hole-shaped guide hole 94 is formed along the longitudinal direction of the shielding plate 16, and a plurality of connecting shafts 90 are inserted into the guide hole 94. Thereby, the shielding plate 16 is movable between the first arm 12 and the second arm 14 along the longitudinal direction of the first arm 12 and the second arm 14.
 遮蔽板16の先端部を構成する遮蔽部96は、平面視でカッタ28よりも大きく構成されている。遮蔽板16が第1アーム12及び第2アーム14の長手方向に沿って移動可能することで、遮蔽部96は、第1挟持面22と第2挟持面80との間の遮蔽位置(カッタ28に対向する位置)と、当該遮蔽位置から退避した退避位置とに変位可能である。遮蔽部96の第2アーム14に対向する側には、摩擦抵抗を低減する処理が施されているとよい。このような処理としては、例えば、親水性コートをコーティングすることや、潤滑性を有する合成樹脂(例えば、PTFE等)をコーティングすること等がある。 The shielding part 96 which comprises the front-end | tip part of the shielding board 16 is comprised larger than the cutter 28 by planar view. Since the shielding plate 16 is movable along the longitudinal direction of the first arm 12 and the second arm 14, the shielding portion 96 is located between the first clamping surface 22 and the second clamping surface 80 (the cutter 28). And a retracted position retracted from the shielding position. The side of the shielding part 96 facing the second arm 14 may be subjected to a process for reducing frictional resistance. Such treatment includes, for example, coating with a hydrophilic coat and coating with a synthetic resin having lubricity (for example, PTFE).
 遮蔽板16の基端部には、ハンドル部98が設けられており、このハンドル部98を把持して移動操作することにより、遮蔽部96を進退移動することができる。なお、ハンドル部98が設けられる位置は、基端部に限らず、遮蔽板16の左右のいずれか一方側又は両側であってもよい。 A handle portion 98 is provided at the base end portion of the shielding plate 16, and the shielding portion 96 can be moved forward and backward by gripping and moving the handle portion 98. The position where the handle portion 98 is provided is not limited to the base end portion, and may be on either the left or right side of the shielding plate 16 or on both sides.
 本実施形態に係る吻合器10は、基本的には以上のように構成されるものであり、以下、その作用及び効果について説明する。 The anastomosis instrument 10 according to the present embodiment is basically configured as described above, and the operation and effect thereof will be described below.
 ここでは、図6に示す人工血管100と天然血管102とを重ね合わせて、その重ねた部分を吻合する手技について説明する。人工血管100は、中空円筒形であり、例えば、ポリエステル繊維やePTFE(延伸ポリテトラフルオロエチレン)等によって構成されたものである。天然血管102は、大動脈から分枝した複数の分枝血管102a~102cを、当該分枝血管102a~102cの根元部周辺の大動脈壁ごと大動脈から切り取った血管であり、分枝血管102a~102cの根元部分には、大動脈から切り取られた島状部分103が残っている。 Here, a technique for superposing the artificial blood vessel 100 and the natural blood vessel 102 shown in FIG. 6 and anastomosing the overlapped portions will be described. The artificial blood vessel 100 has a hollow cylindrical shape, and is made of, for example, polyester fiber, ePTFE (expanded polytetrafluoroethylene), or the like. The natural blood vessel 102 is a blood vessel obtained by cutting a plurality of branch blood vessels 102a to 102c branched from the aorta from the aorta together with the aortic wall around the roots of the branch blood vessels 102a to 102c, and the branch blood vessels 102a to 102c. In the root portion, an island-like portion 103 cut out from the aorta remains.
 まず、準備として、大動脈を腹部臓器血管起始部より遠位側でクランプするとともに切断する。次に、大動脈の切断した部分と、人工血管100の一端部とを縫い付ける(遠位側吻合)。遠位側吻合が終わったら、遮断鉗子を胸部と腹部の境界付近の大動脈にかけ、腹部臓器血管起始部の大動脈を適当な大きさにくり抜く、又は、血管壁を切開することにより平面状に展開する。 First, as a preparation, the aorta is clamped and cut at the distal side from the abdominal organ blood vessel origin. Next, the cut portion of the aorta and one end of the artificial blood vessel 100 are sewn (distal anastomosis). When the distal anastomosis is completed, apply a blocking forceps to the aorta near the boundary between the chest and abdomen, and cut out the aorta at the origin of the abdominal organ blood vessel to an appropriate size, or expand it into a plane by incising the vessel wall To do.
 以上の準備ができたら、吻合器10のヘッド部81を開き、その状態で、図7に示すように、遠位側を縫い付けられた人工血管100の中枢側から、吻合器10の第1アーム12を人工血管100に挿入する。このとき、第1アーム12と遮蔽板16との間に人工血管100を挿入し、第2アーム14と遮蔽板16との間に天然血管102(島状部分103)を挿入する。 When the above preparation is completed, the head portion 81 of the anastomosis device 10 is opened, and in this state, as shown in FIG. 7, the first side of the anastomosis device 10 is inserted from the central side of the artificial blood vessel 100 sewn on the distal side. The arm 12 is inserted into the artificial blood vessel 100. At this time, the artificial blood vessel 100 is inserted between the first arm 12 and the shielding plate 16, and the natural blood vessel 102 (island-like portion 103) is inserted between the second arm 14 and the shielding plate 16.
 人工血管100に対する人工血管100の位置を所定位置に合わせた状態で、複数の分枝血管102a~102cがヘッド部81内にくる位置まで吻合器10を人工血管100内に挿入したら、ヘッド部81を閉じて、複数の分枝血管102a~102cを囲う。次に、図8に示すように、第1アーム12と第2アーム14とを近接させて、第1アーム12と第2アーム14とにより人工血管100と天然血管102とを挟み込み、固定する。この状態で、針24は、カートリッジ25内に保持されており、また、カッタ28は、第1アーム12内に位置している。以下、このときの作動部材70の位置を「第1の位置」とよぶ。 When the anastomosis device 10 is inserted into the artificial blood vessel 100 to a position where the plurality of branch blood vessels 102a to 102c are in the head portion 81 in a state where the position of the artificial blood vessel 100 with respect to the artificial blood vessel 100 is adjusted to a predetermined position, Is closed to enclose a plurality of branch blood vessels 102a to 102c. Next, as shown in FIG. 8, the first arm 12 and the second arm 14 are brought close to each other, and the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched and fixed by the first arm 12 and the second arm 14. In this state, the needle 24 is held in the cartridge 25, and the cutter 28 is located in the first arm 12. Hereinafter, the position of the operating member 70 at this time is referred to as a “first position”.
 本実施形態の場合、第2挟持面80に突起88が設けられているので、第1挟持面22と第2挟持面80との間で人工血管100と天然血管102とを挟持した際に、天然血管102がずれることを好適に防止することができる。 In the case of this embodiment, since the projection 88 is provided on the second clamping surface 80, when the artificial blood vessel 100 and the natural blood vessel 102 are clamped between the first clamping surface 22 and the second clamping surface 80, The natural blood vessel 102 can be suitably prevented from shifting.
 次に、操作部74(図1参照)を操作して、作動部材70を第1の位置から図9に示す「第2の位置」までさらに前進させる。このとき、第2レバー部50の後端に設けられた第2テーパ部64と、作動部材70の先端面に設けられた第3テーパ部72とによるテーパ作用下に、作動部材70は、第2レバー部50の第2直線部60の下に入り込みながら前進し、この結果、ハウジング20内で第2レバー部50が弾性部材68の弾発力に抗して持ち上げられる。 Next, the operating unit 74 (see FIG. 1) is operated to further advance the operating member 70 from the first position to the “second position” shown in FIG. At this time, under the taper action by the second taper portion 64 provided at the rear end of the second lever portion 50 and the third taper portion 72 provided at the distal end surface of the operation member 70, the operation member 70 is The two lever portions 50 move forward while entering under the second straight portion 60, and as a result, the second lever portion 50 is lifted up against the elastic force of the elastic member 68 in the housing 20.
 これにより、第2レバー部50の先端に設けられたカッタ28が押し上げられて、人工血管100の一部が切断される。このときの切断線は、カッタ28と同じ形状の環状である。本実施形態の場合、カッタ28により人工血管100を切断する際に、天然血管102とカッタ28との間に遮蔽板16が存在するため、天然血管102を損傷することを確実に防止できる。 Thereby, the cutter 28 provided at the tip of the second lever portion 50 is pushed up, and a part of the artificial blood vessel 100 is cut. The cutting line at this time is an annular shape having the same shape as the cutter 28. In the case of this embodiment, when the artificial blood vessel 100 is cut by the cutter 28, the shielding plate 16 exists between the natural blood vessel 102 and the cutter 28, so that the natural blood vessel 102 can be reliably prevented from being damaged.
 次に、操作部74を操作して、作動部材70を第2の位置から図10に示す「第3の位置」までさらに前進させる。このとき、第2レバー部50が作動部材70上から外れるために、弾性部材68の弾発力によって下降する。これにより、第2レバー部50の先端に設けられたカッタ28が第1アーム12内に戻される。 Next, the operating unit 74 is operated to further advance the operating member 70 from the second position to the “third position” shown in FIG. At this time, since the second lever portion 50 is disengaged from the operation member 70, the second lever portion 50 is lowered by the elastic force of the elastic member 68. Thereby, the cutter 28 provided at the tip of the second lever portion 50 is returned into the first arm 12.
 次に、遮蔽板16の基端部に設けられたハンドル部98を把持して、遮蔽板16を図11に示す退避位置まで後退させる。この状態で、遮蔽部96は、カッタ28に対向する位置から外れるとともに、人工血管100からも外れた位置に退避している。本実施形態の場合、遮蔽部96の第2アーム14に対向する側(天然血管102に接触する面)には、摩擦抵抗を低減する処理が施されているので、第1挟持面22と第2挟持面80とで人工血管100と天然血管102とを挟んだまま、遮蔽板16を退避位置に向けて容易にスライドさせることができる。 Next, the handle 98 provided at the base end of the shielding plate 16 is gripped, and the shielding plate 16 is moved back to the retracted position shown in FIG. In this state, the shield 96 is removed from the position facing the cutter 28 and is also retracted to a position removed from the artificial blood vessel 100. In the case of this embodiment, since the process which reduces frictional resistance is given to the side (surface which contacts the natural blood vessel 102) which opposes the 2nd arm 14 of the shielding part 96, the 1st clamping surface 22 and the 1st The shielding plate 16 can be easily slid toward the retracted position while the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched between the two clamping surfaces 80.
 次に、操作部74を操作して、作動部材70を第3の位置から図12に示す「第4の位置」までさらに前進させる。このとき、第1テーパ部46と第3テーパ部72の作用下に、作動部材70は、第1平坦部42の下に入り込みながら前進する。この結果、ハウジング20内で第1レバー部36が持ち上げられ、第1レバー部36の先端に設けられたプッシャー34によって、カートリッジ25内に保持された針24が押し上げられるとともに、第2挟持面80に設けられたステープル成形溝82(図5参照)によって針24が折り曲げられる。これにより、天然血管102と人工血管100とが針24によって結合される(ステープルされる)。 Next, the operating unit 74 is operated to further advance the operating member 70 from the third position to the “fourth position” shown in FIG. At this time, under the action of the first taper portion 46 and the third taper portion 72, the actuating member 70 advances while entering under the first flat portion 42. As a result, the first lever portion 36 is lifted in the housing 20, and the needle 24 held in the cartridge 25 is pushed up by the pusher 34 provided at the tip of the first lever portion 36, and the second clamping surface 80. The needle 24 is bent by a staple forming groove 82 (see FIG. 5) provided on the needle. As a result, the natural blood vessel 102 and the artificial blood vessel 100 are coupled (stapled) by the needle 24.
 次に、図13参照に示すように、第1アーム12と第2アーム14とを離間さるとともに、第2アーム14のヘッド部81を開いたうえで、吻合器10を人工血管100から引き出す。このとき、人工血管100には、カッタ28の切断によって開口部100aが形成されている。また、センター台座75の上面に設けられた粘着面78には、カッタ28によって切断された人工血管100の一部(切除片106)がくっ付いているので、吻合器10を人工血管100から引き出す際に、切除片106が一緒に回収される。 Next, as shown in FIG. 13, the first arm 12 and the second arm 14 are separated from each other, the head portion 81 of the second arm 14 is opened, and the anastomosis instrument 10 is pulled out from the artificial blood vessel 100. At this time, an opening 100 a is formed in the artificial blood vessel 100 by cutting the cutter 28. Further, since the adhesive surface 78 provided on the upper surface of the center pedestal 75 is attached with a part of the artificial blood vessel 100 (the excised piece 106) cut by the cutter 28, the anastomosis device 10 is pulled out from the artificial blood vessel 100. In the meantime, the excision piece 106 is collected together.
 以上の手技により、図14に示すように、人工血管100と天然血管102とを吻合によって接合することができる。 By the above procedure, the artificial blood vessel 100 and the natural blood vessel 102 can be joined by anastomosis as shown in FIG.
 以上説明したように、本実施形態に係る吻合器10によれば、人工血管100と天然血管102とを重ね合わせ、この重なり部分を第1挟持面22と第2挟持面80とで挟持固定し、この状態で第1挟持面22を通して複数の針24を押し出すことで、人工血管100と天然血管102との重なり部分を吻合できる。これにより、人工血管100と天然血管102とを接合することができる。したがって、従来技術(手縫い)と比べ、吻合時間が大幅に短縮されるとともに、分枝血管102a~102cの個々の剥離が少なくて済むため血管閉塞のリスク低減を図ることが可能である。 As described above, according to the anastomosis instrument 10 according to the present embodiment, the artificial blood vessel 100 and the natural blood vessel 102 are overlapped, and the overlapping portion is sandwiched and fixed between the first sandwiching surface 22 and the second sandwiching surface 80. In this state, the overlapping portions of the artificial blood vessel 100 and the natural blood vessel 102 can be anastomosed by pushing the plurality of needles 24 through the first clamping surface 22. Thereby, the artificial blood vessel 100 and the natural blood vessel 102 can be joined. Therefore, compared with the prior art (hand-sewn), the anastomosis time is significantly shortened, and the individual detachment of the branch vessels 102a to 102c is reduced, so that the risk of vascular occlusion can be reduced.
 本実施形態に係る吻合器10の場合、カッタ28と、このカッタ28を出没移動させるカッタ移動機構30とを備えているので、第1挟持面22と第2挟持面80とで人工血管100と天然血管102とを挟み込み、筒型のカッタ28を突出させることで、人工血管100の側面に開口部100aを短時間で形成することができる。そして、第1挟持面22と第2挟持面80とで人工血管100と天然血管102とを挟んだまま、カートリッジ25から複数の針24を押し出すことで、形成した開口部100aの周囲部分と天然血管102の島状部分103との重なり部分を吻合することができる。このように、吻合器10ひとつで、人工血管100に対する開口部100aの形成と、針24による接合とを実施することができ、吻合時間とともに人工血管100接合部の形成時間をより一層大幅に短縮することができる。 In the case of the anastomosis instrument 10 according to the present embodiment, the cutter 28 and the cutter moving mechanism 30 for moving the cutter 28 in and out are provided. Therefore, the artificial blood vessel 100 is formed by the first clamping surface 22 and the second clamping surface 80. By sandwiching the natural blood vessel 102 and projecting the cylindrical cutter 28, the opening 100a can be formed on the side surface of the artificial blood vessel 100 in a short time. Then, the plurality of needles 24 are pushed out from the cartridge 25 while the artificial blood vessel 100 and the natural blood vessel 102 are sandwiched between the first clamping surface 22 and the second clamping surface 80, so that the peripheral portion of the formed opening 100a and the natural portion An overlapping portion of the blood vessel 102 with the island-like portion 103 can be anastomosed. Thus, the formation of the opening 100a with respect to the artificial blood vessel 100 and the joining with the needle 24 can be performed with one anastomosis device 10, and the time for forming the joint portion of the artificial blood vessel 100 is further greatly reduced together with the anastomosis time. can do.
 また、本実施形態に係る吻合器10の場合、第1アーム12と第2アーム14との間には遮蔽板16が設けられているので、カッタ28により人工血管100を切断する際に、天然血管102とカッタ28との間に遮蔽板16が存在するため、天然血管102を損傷することが確実に防止できる。しかもこの遮蔽板16は、カッタ28に対向する位置から退避可能であるため、カートリッジ25から針24を押し出す際に、邪魔にならず、人工血管100と天然血管102との吻合を確実に行うことが可能である。 Further, in the case of the anastomosis instrument 10 according to the present embodiment, since the shielding plate 16 is provided between the first arm 12 and the second arm 14, when the artificial blood vessel 100 is cut by the cutter 28, Since the shielding plate 16 exists between the blood vessel 102 and the cutter 28, the natural blood vessel 102 can be reliably prevented from being damaged. Moreover, since the shielding plate 16 can be retracted from the position facing the cutter 28, when the needle 24 is pushed out from the cartridge 25, the anastomosis between the artificial blood vessel 100 and the natural blood vessel 102 is reliably performed without being obstructed. Is possible.
 本実施形態に係る吻合器10の場合、カートリッジ25は環状に構成され、カッタ28は筒型であり、第2アーム14には開閉可能に構成されたヘッド部81が設けられ、ヘッド部81は閉じた状態でカートリッジ25と同様の環状をなし、ヘッド部81の第1挟持面22に対向する側に第2挟持面80が設けられている。このように構成されているので、一回のカッタ28の出没動作と、一回の針24の押出し動作だけで、人工血管100と天然血管102との重なり部分を、天然血管102を囲むように吻合することができる。よって、吻合時間をより短縮することができる。 In the case of the anastomotic apparatus 10 according to the present embodiment, the cartridge 25 is configured in an annular shape, the cutter 28 is cylindrical, and the second arm 14 is provided with a head portion 81 configured to be openable and closable. In the closed state, it forms an annular shape similar to that of the cartridge 25, and the second clamping surface 80 is provided on the side of the head portion 81 that faces the first clamping surface 22. Since it is configured in this manner, the overlapping portion of the artificial blood vessel 100 and the natural blood vessel 102 is surrounded by the natural blood vessel 102 only by the operation of moving the cutter 28 once and the pushing operation of the needle 24 once. Can be anastomosed. Therefore, the anastomosis time can be further shortened.
 本実施形態に係る吻合器10の場合、第1アーム12に粘着面78が設けられているので、吻合器10を人工血管100から引き出す際に、切除片106が一緒に回収される。よって、吻合時間をより短縮することが可能である。 In the case of the anastomosis instrument 10 according to this embodiment, since the first arm 12 is provided with the adhesive surface 78, when the anastomosis instrument 10 is pulled out from the artificial blood vessel 100, the excision piece 106 is collected together. Therefore, the anastomosis time can be further shortened.
 本実施形態に係る吻合器10の場合、操作部74を操作して作動部材70を第1の位置から第2の位置に移動させることで、カッタ28を突出させることができ、作動部材70を第2の位置から第3の位置に移動させることで、カッタ28を第1アーム12内に戻すことができ、さらに、作動部材70を第3の位置から第4の位置に移動させることで、針24を押し出すことができる。よって、1つの操作部74を順に移動させていくだけで、人工血管100の切断と針24による接合の両方を行うことができる。 In the case of the anastomotic apparatus 10 according to the present embodiment, the cutter 28 can be protruded by operating the operating portion 74 to move the operating member 70 from the first position to the second position. By moving from the second position to the third position, the cutter 28 can be returned into the first arm 12, and further, by moving the operating member 70 from the third position to the fourth position, The needle 24 can be pushed out. Therefore, both the cutting of the artificial blood vessel 100 and the joining with the needle 24 can be performed by simply moving the single operation unit 74 in order.
 なお、上述した本実施形態では、カートリッジ25及びヘッド部81が環状に構成され、一回の針24の押出操作で、人工血管100と天然血管102とを分枝血管102a~102cを囲むように吻合するように構成されたが、本発明は当該構成に限らない。例えば、環状のカートリッジ25及びヘッド部81の一部を切り欠いてC字状又はU字状に構成してもよい。このように構成した吻合器を用いて人工血管100と天然血管102を接合する場合、異なる方向から複数回に分けて吻合を実施すればよい。 In the above-described embodiment, the cartridge 25 and the head portion 81 are configured in an annular shape so that the artificial blood vessel 100 and the natural blood vessel 102 are surrounded by the branch blood vessels 102a to 102c by one push-out operation of the needle 24. Although an anastomosis is configured, the present invention is not limited to this configuration. For example, a part of the annular cartridge 25 and the head portion 81 may be cut out to form a C shape or a U shape. When the artificial blood vessel 100 and the natural blood vessel 102 are joined using the anastomosis apparatus configured as described above, the anastomosis may be performed in a plurality of times from different directions.
 上記において、本発明について好適な実施の形態を挙げて説明したが、本発明は前記実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々の改変が可能なことは言うまでもない。 In the above description, the present invention has been described with reference to preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. Needless to say.

Claims (9)

  1.  第1挟持面(22)と、複数の針(24)を収納するカートリッジ(25)と、前記第1挟持面(22)を通して前記カートリッジ(25)から前記針(24)を押し出す針移動機構(26)とを有する第1アーム(12)と、
     前記第1アーム(12)に対向して配置され、前記針(24)が押し出された際に前記針(24)を折り曲げるステープル成形面を構成する第2挟持面(80)を有する第2アーム(14)と、を備え、
     前記第1アーム(12)と前記第2アーム(14)とは、互いに近接及び離間可能な状態で連結され、
     前記カートリッジ(25)は、環状の少なくとも一部を構成するように湾曲又は屈曲して延在し、
     前記第2挟持面(80)は、少なくとも前記カートリッジ(25)の延在形状に沿って延在する、
     ことを特徴とする吻合器(10)。
    A first clamping surface (22), a cartridge (25) that houses a plurality of needles (24), and a needle moving mechanism that pushes out the needle (24) from the cartridge (25) through the first clamping surface (22). 26) and a first arm (12) having
    A second arm that is disposed opposite to the first arm (12) and has a second clamping surface (80) that forms a staple forming surface that bends the needle (24) when the needle (24) is pushed out. (14)
    The first arm (12) and the second arm (14) are connected in a state in which they can approach and separate from each other,
    The cartridge (25) extends curvedly or bent so as to constitute at least a part of an annular shape,
    The second clamping surface (80) extends at least along the extending shape of the cartridge (25);
    An anastomosis device (10) characterized in that.
  2.  請求項1記載の吻合器(10)において、
     前記第1アーム(12)は、前記第1挟持面(22)に対して出没可能であり且つ前記カートリッジ(25)の内側で当該カートリッジ(25)の内周に沿って延在するカッタ(28)と、前記カッタ(28)を出没移動させるカッタ移動機構(30)とを有する、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 1,
    The first arm (12) can protrude and retract with respect to the first clamping surface (22), and extends along the inner periphery of the cartridge (25) inside the cartridge (25). And a cutter moving mechanism (30) for moving the cutter (28) in and out,
    An anastomosis device (10) characterized in that.
  3.  請求項2記載の吻合器(10)において、
     前記カートリッジ(25)は、環状に構成され、
     前記カッタ(28)は、筒型カッタであり、
     前記第2アーム(14)には、開閉可能に構成されたヘッド部(81)が設けられ、
     前記ヘッド部(81)は、閉じた状態で、前記カートリッジ(25)と同様の環状をなし、
     前記第2挟持面(80)は、前記ヘッド部(81)の、前記第1挟持面(22)に対向する側に設けられる、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 2,
    The cartridge (25) is configured in an annular shape,
    The cutter (28) is a cylindrical cutter,
    The second arm (14) is provided with a head portion (81) configured to be openable and closable,
    The head portion (81) is in a closed state and has an annular shape similar to the cartridge (25),
    The second clamping surface (80) is provided on the side of the head portion (81) facing the first clamping surface (22).
    An anastomosis device (10) characterized in that.
  4.  請求項2記載の吻合器(10)において、
     前記第1アーム(12)において前記第2アーム(14)に対向する側であって平面視で前記カッタ(28)の内側に、粘着面(78)が設けられる、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 2,
    An adhesive surface (78) is provided on the side of the first arm (12) facing the second arm (14) and inside the cutter (28) in plan view.
    An anastomosis device (10) characterized in that.
  5.  請求項2記載の吻合器(10)において、
     前記第1アーム(12)と前記第2アーム(14)との間に、前記カッタ(28)が第2アーム(14)側に突出したときに前記カッタ(28)に当接する遮蔽板(16)を備え、
     前記遮蔽板(16)は、前記第1挟持面(22)と前記第2挟持面(80)との間の遮蔽位置と、当該遮蔽位置から退避した退避位置とに変位可能である、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 2,
    A shielding plate (16) that comes into contact with the cutter (28) when the cutter (28) protrudes between the first arm (12) and the second arm (14) toward the second arm (14). )
    The shielding plate (16) is displaceable to a shielding position between the first clamping surface (22) and the second clamping surface (80) and a retreat position retracted from the shielding position.
    An anastomosis device (10) characterized in that.
  6.  請求項5記載の吻合器(10)において、
     前記遮蔽板(16)の前記第2アーム(14)に対向する側には、摩擦抵抗を低減する処理が施されている、
     ことを特徴とする吻合器(10)。
    An anastomosis instrument (10) according to claim 5,
    On the side of the shielding plate (16) facing the second arm (14), a process for reducing frictional resistance is performed.
    An anastomosis device (10) characterized in that.
  7.  請求項2記載の吻合器(10)において、
     前記第1アーム(12)は、人手によって操作する操作部(74)と、前記操作部(74)に連動して移動可能な作動部材(70)とを有し、
     前記作動部材(70)が第1の位置にあるとき、前記針(24)が前記カートリッジ(25)内に保持されるとともに、前記カッタ(28)が前記第1アーム(12)内に位置し、
     前記作動部材(70)が第2の位置にあるとき、前記針(24)が前記カートリッジ(25)内に保持されるとともに、前記カッタ移動機構(30)が前記作動部材(70)によって押圧されることで、前記カッタ(28)が前記第1アーム(12)から突出し、
     前記作動部材(70)が第3の位置にあるとき、前記針(24)が前記カートリッジ(25)内に保持されるとともに、前記カッタ(28)が前記第1アーム(12)内に位置し、
     前記作動部材(70)が第4の位置にあるとき、前記カッタ(28)が前記第1アーム(12)内に位置するとともに、前記針移動機構(26)が前記作動部材(70)によって押圧されることで、前記針(24)が前記カートリッジ(25)から押し出され、
     前記第1の位置、前記第2の位置、前記第3の位置、前記第4の位置は、前記第1アーム(12)の一側から他側に向かって、この順で位置設定されている、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 2,
    The first arm (12) has an operation part (74) operated manually, and an operating member (70) movable in conjunction with the operation part (74).
    When the actuating member (70) is in the first position, the needle (24) is held in the cartridge (25) and the cutter (28) is positioned in the first arm (12). ,
    When the operating member (70) is in the second position, the needle (24) is held in the cartridge (25) and the cutter moving mechanism (30) is pressed by the operating member (70). The cutter (28) protrudes from the first arm (12),
    When the actuating member (70) is in the third position, the needle (24) is held in the cartridge (25) and the cutter (28) is positioned in the first arm (12). ,
    When the operating member (70) is in the fourth position, the cutter (28) is positioned in the first arm (12) and the needle moving mechanism (26) is pressed by the operating member (70). The needle (24) is pushed out of the cartridge (25),
    The first position, the second position, the third position, and the fourth position are set in this order from one side of the first arm (12) to the other side. ,
    An anastomosis device (10) characterized in that.
  8.  請求項7記載の吻合器(10)において、
     前記第1アーム(12)には、前記カッタ(28)を前記第1アーム(12)内に収納する方向に前記カッタ移動機構(30)を付勢する付勢手段が設けられる、
     ことを特徴とする吻合器(10)。
    An anastomosis instrument (10) according to claim 7,
    The first arm (12) is provided with a biasing means for biasing the cutter moving mechanism (30) in a direction in which the cutter (28) is housed in the first arm (12).
    An anastomosis device (10) characterized in that.
  9.  請求項1記載の吻合器(10)において、
     前記第2挟持面(80)には、1つ又は複数の突起(88)が設けられる、
     ことを特徴とする吻合器(10)。
    An anastomosis device (10) according to claim 1,
    The second clamping surface (80) is provided with one or more protrusions (88).
    An anastomosis device (10) characterized in that.
PCT/JP2012/050681 2011-03-24 2012-01-16 Anastomosing instrument WO2012127888A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011065303A JP2014110822A (en) 2011-03-24 2011-03-24 Anastomosis device
JP2011-065303 2011-03-24

Publications (1)

Publication Number Publication Date
WO2012127888A1 true WO2012127888A1 (en) 2012-09-27

Family

ID=46879058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/050681 WO2012127888A1 (en) 2011-03-24 2012-01-16 Anastomosing instrument

Country Status (2)

Country Link
JP (1) JP2014110822A (en)
WO (1) WO2012127888A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111904517A (en) * 2020-09-25 2020-11-10 陈情忠 Blood vessel anastomat
WO2023076499A1 (en) * 2021-10-29 2023-05-04 The Regents Of The University Of California Devices and methods for forming an anastomosis between two lumens
CN117982188A (en) * 2024-04-03 2024-05-07 华融科创生物科技(天津)有限公司 Hand-held vascular anastomosis device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020075941A1 (en) * 2018-10-12 2020-04-16 박형준 Non-closure circular stapler

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965900A (en) * 1958-09-30 1960-12-27 Risaburo Aoki Instrument for joining blood vessels
US3144654A (en) * 1961-11-22 1964-08-18 Foundation For Medical Technol Medical staplers
JPS56116451A (en) * 1980-02-15 1981-09-12 Senko Med Instr Mfg Blood vessel suturing implement
JPS57500052A (en) * 1980-01-17 1982-01-14
JPH08164143A (en) * 1994-12-12 1996-06-25 Takasago Ika Kogyo Kk Invivo pipe suture device
JPH11506382A (en) * 1996-04-30 1999-06-08 オチコン アクツイエセルスカプ Method and anastomotic device for use in performing an end-to-side anastomosis
JP2010069303A (en) * 2008-09-18 2010-04-02 Ethicon Endo Surgery Inc Surgical stapling instrument with device for indicating when the instrument has cut through tissue

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965900A (en) * 1958-09-30 1960-12-27 Risaburo Aoki Instrument for joining blood vessels
US3144654A (en) * 1961-11-22 1964-08-18 Foundation For Medical Technol Medical staplers
JPS57500052A (en) * 1980-01-17 1982-01-14
JPS56116451A (en) * 1980-02-15 1981-09-12 Senko Med Instr Mfg Blood vessel suturing implement
JPH08164143A (en) * 1994-12-12 1996-06-25 Takasago Ika Kogyo Kk Invivo pipe suture device
JPH11506382A (en) * 1996-04-30 1999-06-08 オチコン アクツイエセルスカプ Method and anastomotic device for use in performing an end-to-side anastomosis
JP2010069303A (en) * 2008-09-18 2010-04-02 Ethicon Endo Surgery Inc Surgical stapling instrument with device for indicating when the instrument has cut through tissue

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111904517A (en) * 2020-09-25 2020-11-10 陈情忠 Blood vessel anastomat
WO2023076499A1 (en) * 2021-10-29 2023-05-04 The Regents Of The University Of California Devices and methods for forming an anastomosis between two lumens
CN117982188A (en) * 2024-04-03 2024-05-07 华融科创生物科技(天津)有限公司 Hand-held vascular anastomosis device

Also Published As

Publication number Publication date
JP2014110822A (en) 2014-06-19

Similar Documents

Publication Publication Date Title
AU696332B2 (en) Surgical stapling instrument and method thereof
US5881943A (en) Surgical anastomosis apparatus and method thereof
US20200100788A1 (en) Circular surgical stapling device including buttress material
US6699245B2 (en) Anastomosis system and related methods
US4979954A (en) Staple suturing method
AU739273B2 (en) Singleshot anastomosis instrument with detachable loading unit and method
US6631837B1 (en) Surgical stapling instrument and method thereof
US4944295A (en) Suturing assembly
US20030135227A1 (en) Anastomosis device and method
JPH02289241A (en) Stapler for surgery
JP2000070275A (en) Device for surgery
US8740970B2 (en) System and method for attaching a vessel in a vascular environment
CA2801749A1 (en) Circular stapler with increased lumen diameter
JP2010063891A (en) Surgical stapling device
JP2013154163A (en) Circular stapler including buttress
WO1997028745A1 (en) Surgical clips and methods for tissue approximation
WO2012127888A1 (en) Anastomosing instrument
US9554795B2 (en) Anvil cap of a multiple umbrella type for circular staplers
US8701963B2 (en) Medical anastomosis apparatus
WO2005030096A9 (en) Connector assembly for joining a graft vessel to a side of a target vessel
WO2017096502A1 (en) Anvil assembly and delivery system
JP2013530787A (en) Stapling device for anastomosing a hollow organ
EP2777519A1 (en) Surgical stapling device with detachable handle sections
US20240032928A1 (en) Laparoscopic anastomosis devices and methods of use thereof
JP2013517836A (en) Stapling device for anastomosing a hollow organ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12760225

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12760225

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP