CN113499169A - Valve clamping device and valve clamping system - Google Patents
Valve clamping device and valve clamping system Download PDFInfo
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- CN113499169A CN113499169A CN202110881913.9A CN202110881913A CN113499169A CN 113499169 A CN113499169 A CN 113499169A CN 202110881913 A CN202110881913 A CN 202110881913A CN 113499169 A CN113499169 A CN 113499169A
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- edge
- clip
- clamping piece
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- 239000013013 elastic material Substances 0.000 claims abstract description 7
- 229910000531 Co alloy Inorganic materials 0.000 claims description 8
- 230000000452 restraining effect Effects 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000007943 implant Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000009417 prefabrication Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 3
- 210000005240 left ventricle Anatomy 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000005246 left atrium Anatomy 0.000 description 2
- 210000004115 mitral valve Anatomy 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 206010027727 Mitral valve incompetence Diseases 0.000 description 1
- 206010067171 Regurgitation Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 210000003698 chordae tendineae Anatomy 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003540 papillary muscle Anatomy 0.000 description 1
- 230000004796 pathophysiological change Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2442—Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
- A61F2/2466—Delivery devices therefor
Landscapes
- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention provides a valve clamping device and a valve clamping system, and relates to the technical field of medical instruments, the valve clamping device provided by the invention comprises a base, and an upper clamping piece and a lower clamping piece which are arranged on the base, wherein the number of the upper clamping pieces is equal to that of the lower clamping pieces, and the upper clamping pieces and the lower clamping pieces are arranged on the same side of the base in a one-to-one correspondence manner; the upper clamping piece and the lower clamping piece are both made of elastic materials, the upper clamping piece has a trend of being far away from the axis of the base, and the lower clamping piece has a trend of moving close to the axis of the base. The valve clamping device provided by the invention relieves the technical problem that the length of the implant is increased by the valve blade clamping device in the related art.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a valve clamping device and a valve clamping system.
Background
The mitral valve is two valve leaflets attached to the periphery of the ostium of the left ventricle and attached to the papillary muscles by chordae tendineae, which act to prevent blood from the left ventricle from flowing back into the left atrium. Mitral regurgitation is caused by an organic or functional change in the mitral valve leaflets and their associated structures that causes a series of pathophysiological changes in the regurgitation of blood flow from the left ventricle to the left atrium.
The valve leaflet clamping device developed according to the technical principle of surgical valve leaflet edge-to-edge sewing is the most certain at present because of high safety, simple technical principle and great feasibility. After the valve blade clamp in the prior art is tightened, a gap exists between the upper clamp piece base and the lower clamp piece base, so that the length of the implant is increased.
Disclosure of Invention
The invention aims to provide a valve clamping device and a valve clamping system, which are used for relieving the technical problem that the length of an implant is increased by a valve blade clamping device in the related art.
The present invention provides a valve clip device comprising: the clamping device comprises a base, an upper clamping piece and a lower clamping piece, wherein the upper clamping piece and the lower clamping piece are arranged on the base, and the number of the upper clamping pieces is equal to that of the lower clamping pieces and is arranged on the same side of the base in a one-to-one correspondence manner;
the upper clamping piece and the lower clamping piece are both made of elastic materials, the upper clamping piece has a movement trend far away from the axis of the base, and the lower clamping piece has a movement trend close to the axis of the base.
Optionally, the upper clip comprises a first edge, and one end of the first edge is connected with the base; the upper clamping piece has a movement trend away from the axis of the base through the shaped prefabrication force.
Optionally, the lower clip includes a second edge and a third edge that are parallel and spaced apart from each other, a length of the second edge is equal to a length of the third edge, a first end of the second edge is connected to a first end of the third edge, and a second end of the second edge and a second end of the third edge are both connected to the base;
the lower clamping piece has a movement trend close to the axis of the base through the shaped prefabrication force.
Optionally, the lower clip piece comprises a second edge and a third edge, a first end of the second edge and a first end of the third edge are connected to each other, and a second end of the second edge and a second end of the third edge are both connected to the base; the length of the second side is greater than the length of the third side.
Optionally, the upper and lower jaws are made of nitinol or cobalt-based alloy wire.
Optionally, the end portion of the base is far away from the upper clamping piece is provided with a first through hole, the end portion of the base is far away from the lower clamping piece is provided with a second through hole, the base is provided with a third through hole, and the first through hole, the second through hole and the third through hole are all used for a constraint line to pass through.
Optionally, the base is provided with a connecting rod, the connecting rod is provided with a first connecting structure, and the connecting rod is detachably connected with a release rod in the conveyor through the first connecting structure.
Optionally, the valve clamping device further comprises an axial locking member, and after the valve leaflets are captured, the axial locking member is used for fixing the upper clamping piece at a position close to the axis of the base.
Optionally, the axial locking piece comprises a coil spring, after the valve blade is captured, the coil spring is conveyed to the periphery of the upper clamping piece through a shifting fork in the conveyor, and the coil spring is provided with a transmission cross beam matched with the plane of the shifting fork.
The invention provides a valve clamping system which comprises a conveyor and the valve clamp, wherein the conveyor is used for conveying the valve clamp to the heart.
Optionally, the valve clamping system further comprises a first constraint line passing through an end of the upper clip distal from the base and a second constraint line passing through an end of the lower clip distal from the base and the base;
and two free ends of the first constraint line and two free ends of the second constraint line penetrate through the conveying pipe of the conveyor and extend out of the conveyor.
Optionally, the conveyor comprises a release rod detachably connected to the base and a release wire passing through the release rod and threadedly connected to the base.
The invention provides a valve clamping device and a valve clamping system, wherein the valve clamping device comprises: the clamping device comprises a base, an upper clamping piece and a lower clamping piece, wherein the upper clamping piece and the lower clamping piece are arranged on the base; the upper clamping piece and the lower clamping piece are both made of elastic materials, the upper clamping piece has a movement trend of being far away from the axis of the base, and the lower clamping piece has a movement trend of being close to the axis of the base. In the valve clamping device provided by the invention, the upper clamping piece and the lower clamping piece are both arranged on the base, no gap exists in the axial direction of the base, the length of the valve clamping device is reduced, and thus the length of an implant is reduced; in the operation process, after the seizure of completion valve blade, because last clamping piece and lower clamping piece are made by elastic material, go up the trend that the clamping piece has the axis of keeping away from the base, go up the clamping piece and all utilize the elasticity restoring force of self with lower clamping piece to the cooperation is pressed from both sides the valve blade tightly, need not to use link structure, thereby makes the structure of valve clamping device simpler.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a valve clamp according to an embodiment of the present invention;
FIG. 2 is a schematic view of a valve clip provided in an embodiment of the present invention in a delivery state;
FIG. 3 is a schematic view of a valve clip in a leaflet capturing state according to an embodiment of the present invention;
FIG. 4 is a schematic view of a valve clamp according to an embodiment of the present invention clamping a valve leaflet;
FIG. 5 is a schematic view of a valve clip provided in an embodiment of the present invention in an axially locked ready state;
FIG. 6 is a schematic view of a valve clamp according to an embodiment of the present invention in a locked state;
fig. 7 is a schematic view of a valve clip provided in an embodiment of the present invention in a disengaged state.
Icon: 100-a base; 110-a third via; 120-a connecting rod; 121-a first engagement groove; 200-an upper clip; 210-a first via; 300-a lower jaw; 310-a second edge; 320-third side; 330-a second via; 400-a coil spring; 510-a first constraint line; 520-a second constraint line; 610-release lever; 620-detachment filaments; 710-a delivery tube; 720-a shifting fork; 800-valve leaflet.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, a valve clip device according to an embodiment of the present invention includes: the base 100, and the upper clamping pieces 200 and the lower clamping pieces 300 installed on the base 100, wherein the number of the upper clamping pieces 200 is equal to that of the lower clamping pieces 300, and the upper clamping pieces 200 and the lower clamping pieces 300 are correspondingly arranged on the same side of the base 100; the upper jaw 200 and the lower jaw 300 are both made of an elastic material, the upper jaw 200 having a tendency to move away from the axis of the base 100, and the lower jaw 300 having a tendency to move closer to the axis of the base 100.
The number of the upper clips 200 and the lower clips 300 can be one, two or three, and the specific number can be set according to the operation requirement, and the following description specifically illustrates that the number of the upper clips 200 and the lower clips 300 is two. As shown in fig. 1, the two upper clips 200 and the two lower clips 300 are symmetrically disposed about the axis of the base 100, the two upper clips 200 are located above the two lower clips 300 in a one-to-one correspondence, the two upper clips 200 each have a tendency to move in a direction close to the corresponding lower clip 300, and the two lower clips 300 each have a tendency to move in a direction close to the corresponding upper clip 200. In some embodiments, the base 100 is oblong, the base 100 is provided with a first mounting through hole for mounting the upper clip 200 and the lower clip 300, an axis of the first mounting through hole is parallel to an axis of the base 100, the first mounting through hole for mounting the upper clip 200 is located between the first mounting through hole for mounting the lower clip 300 and the axis of the base 100, and the upper clip 200 and the lower clip 300 are inserted into the corresponding first mounting through holes. In other embodiments, the base 100 is rectangular, the upper end surface of the base 100 is provided with a mounting protrusion, the mounting protrusion is provided with a second mounting through hole for mounting the upper clamping piece 200 and the lower clamping piece 300, an axis of the second mounting through hole is perpendicular to an axis of the base 100, and the upper clamping piece 200 and the lower clamping piece 300 are inserted into the second mounting through hole. In the valve clamping device provided by the embodiment of the invention, the upper clamping piece 200 and the lower clamping piece 300 are both arranged on the base 100, no gap exists along the axial direction of the base 100, the length of the valve clamping device is reduced, and therefore, the length of an implant is reduced; in the operation process, after the catching of the valve leaflet 800 is completed, because the upper clamping piece 200 and the lower clamping piece 300 are both made of elastic materials, the upper clamping piece 200 has a tendency of being far away from the axis of the base 100, the upper clamping piece 200 and the lower clamping piece 300 both utilize the elastic restoring force of the upper clamping piece 200 and the lower clamping piece 300, and the valve leaflet 800 is clamped in a matching way, a connecting rod structure is not needed, and the structure of the valve clamping device is simpler.
In some embodiments, both the upper jaw 200 and the lower jaw 300 may be made of a metal sheet or a metal wire, and in this embodiment, the upper jaw 200 and the lower jaw 300 are made of a nitinol wire or a cobalt-based alloy wire. With the age, the calcification rate of the human heart valve leaf 800 is gradually increased, the calcified valve leaf 800 becomes hard, and the hard upper clamping piece 200 cannot effectively adapt to the shape of the leaf. The upper and lower clips 200 and 300 made of metal sheet or wire are flexible, and the flexible upper and lower clips 200 and 300 can better fit the shape of the calcified leaf blade in response to the calcified leaf blade, and have good adaptability to a certain pressure.
The following describes a specific structure of the upper clip 200:
as shown, the upper jaw 200 includes a first edge, one end of which is connected to the base 100; the upper jaw 200 has a tendency to move away from the axis of the base 100 by a pre-set force after setting.
Specifically, the upper jaw 200 may be formed by bending a nitinol wire or a cobalt-based alloy wire to form a first edge, one end of the first edge is connected to the base 100, the other end of the first edge extends in a direction away from the base 100, the first edge formed by bending is arc-shaped and protrudes in a direction away from the axis of the base 100, the first edge has a tendency to move in a direction close to the lower jaw 300 by a pre-forming force after pre-forming, and in a natural state, an included angle between the axis of the upper jaw 200 and the axis of the base 100 is approximately 45 degrees. The opposite side of the first edge and the lower clamping piece 300 is provided with a reinforcing thorn which inclines towards the direction close to the axis of the base 100, and when the upper clamping piece 200 is clamped outside the valve blade 800, the reinforcing thorn pierces the valve blade 800 to increase the acting force between the reinforcing thorn and prevent the valve clamp from falling off from the valve blade 800. The upper clip 200 formed by bending nitinol wire or cobalt-based alloy wire has only a first edge and has a tendency to move in a direction close to the lower clip 300, which can clamp the valve leaflet 800 while having a simple structure.
The following describes a specific structure of the lower clip 300:
in some embodiments, the lower clip 300 includes a second side 310 and a third side 320 that are parallel and spaced apart, the second side 310 has a length equal to the length of the third side 320, a first end of the second side 310 is connected to a first end of the third side 320, and a second end of the second side 310 and a second end of the third side 320 are connected to the base 100; the lower clip 300 has a tendency to move close to the axis of the base 100 by a pre-set force after being set.
Specifically, the lower clip 300 may be formed by bending a nitinol wire or a cobalt-based alloy wire to form a second edge 310 and a third edge 320, two free ends of the wire are inserted into the second mounting through hole on the base 100, so as to implement the connection between the lower clip 300 and the base 100, the second edge 310 and the third plate formed by bending are both arc-shaped and protrude in a direction close to the axis of the base 100, the second edge 310 and the third edge 320 have a tendency to move in a direction close to the lower clip 300 by a prefabrication force after prefabrication and shaping, and in a natural state, the lower clip 300 is close to and attached to the axis of the base 100. The reinforcing thorns are arranged on the second edge 310 and the third edge 320 on the opposite sides of the upper clamping piece 200, the reinforcing thorns incline towards the direction close to the axis of the base 100, and when the upper clamping piece 200 is clamped outside the valve blade 800, the reinforcing thorns penetrate into the valve blade 800 to increase the acting force between the reinforcing thorns and prevent the valve clamp from falling off from the valve blade 800. The lower clip 300 formed by bending nitinol or cobalt-based alloy wire has only the second edge 310 and the third edge 320, and has a tendency to move in a direction close to the upper clip 200, which can achieve a simple structure while clamping the valve leaflet 800.
As another embodiment, the lower clip 300 includes a second side 310 and a third side 320, a first end of the second side 310 and a first end of the third side 320 are connected to each other, and a second end of the second side 310 and a second end of the third side 320 are both connected to the base 100; the length of the second side 310 is greater than the length of the third side 320.
Specifically, the lengths of the second side 310 and the third side 320 formed by bending nitinol or cobalt-based alloy wire are different, the length of the second side 310 is greater than the length of the third side 320, the first end of the second side 310 is flush with the first end of the third side 320, the second end of the second side 310 and the second end of the third side 320 are inserted into the second mounting hole, the second end of the second side 310 is located on one side of the second end of the third side 320 close to the axis of the base 100, the length of the second side 310 is different from the length of the third side, and the torque difference generated by the different coaxial rotating arms provides a clamping force, so that the lower clip 300 has a tendency of moving towards the direction close to the upper clip 200.
Optionally, the end of the upper clip 200 away from the base 100 is provided with a first through hole 210, the end of the lower clip 300 away from the base 100 is provided with a second through hole 330, the base 100 is provided with a third through hole 110, and the first through hole 210, the second through hole 330 and the third through hole 110 are all used for passing a constraint line.
Specifically, in the process of bending the upper clip 200, a first through hole 210 is formed at one end of the upper clip 200 away from the base 100, and the axis of the first through hole 210 is perpendicular to the axis of the base 100. In the process of bending to form the lower clip 300, the ends of the second edge 310 and the third edge 320 far away from the base 100 are bent to form second through holes 330, the two second through holes 330 are coaxially arranged, and the axes are both perpendicular to the axis of the base 100. The base 100 is provided with a plurality of third through holes 110, and the plurality of third through holes 110 are distributed on two sides of the axis of the base 100. In operation, the restriction line for controlling the upper jaw 200 passes through the first through hole 210, and the two free ends protrude from the transporter, and the restriction line for controlling the lower jaw 300 passes through the two second through holes 330, and the two free ends pass from the upper side of the base 100 shown in fig. 1 to the lower side of the base 100 through the third through hole 110, and then pass from the other third through hole 110 to the upper side of the base 100, and then protrude from the transporter. When the valve clamping device is conveyed, the upper clamping piece 200 is attached to the axis of the base 100 by pulling the constraint line for controlling the upper clamping piece 200, the lower clamping piece 300 is attached to the axis of the base 100 in a natural state, the whole valve clamping device is in a contraction state, and in the process of capturing the valve blade 800, the lower clamping piece 300 moves towards the direction far away from the axis of the base 100 by pulling the constraint line for controlling the lower clamping piece 300, and the two lower clamping pieces 300 are opened, so that the valve blade 800 is favorably captured. The first through hole 210, the second through hole 330 and the third through hole 110 are disposed such that the corresponding constraint line is engaged with the upper clip 200 or the lower clip 300, and the through hole constrains the control of the upper clip 200 or the lower clip 300.
Alternatively, the base 100 is provided with a connecting rod 120, and the connecting rod 120 is provided with a first connecting structure by which the connecting rod 120 is detachably connected with the releasing rod 610 in the conveyor.
The first connecting structure can be a plug groove or an engaging groove, and in this embodiment, the first connecting structure is an engaging groove. As shown in fig. 1, the connecting rod 120 and the upper jaw 200 are installed on the same side of the base 100, and the axis of the connecting rod 120 coincides with the axis of the base 100, the circumferential surface of the connecting rod 120 near the upper end is provided with a first engaging groove 121, the outer contour of the first engaging groove 121 is S-shaped, and the releasing rod 610 in the conveyor is provided with a second engaging groove matched with the first engaging groove 121. In the process of delivering the valve clamp or capturing the valve leaflet 800, the first engaging groove 121 and the second engaging groove are engaged with each other, after the locking of the valve clamp is completed, the releasing rod 610 is separated from the connecting rod 120, the connecting rod 120 and the releasing rod 610 are engaged with each other through the first engaging groove 121 and the second engaging groove to realize the connection, when the releasing rod 610 and the connecting rod 120 need to be separated, the releasing rod 610 can be separated through rotating, and the operation is convenient.
Optionally, the valve binder further comprises an axial locking member for fixing the upper clip 200 in a position close to the axis of the base 100 after the catching of the valve leaflet 800 is completed. The valve clamping device is locked through the axial locking piece, a connecting rod structure is not needed, and the structure of the valve clamping device is simpler.
Optionally, the axial locking member includes a coil spring 400, and after the catching of the valve leaflet 800 is completed, the coil spring 400 is transferred to the outer circumference of the upper jaw 200 by a fork 720 in a transfer device, the coil spring 400 having a transfer beam that engages with a flat surface of the fork 720.
Specifically, one end of the coil spring 400 has a transmission beam, the length direction of the transmission beam is perpendicular to the axial direction of the coil spring 400, the transmission beam has a plane matched with the shifting fork 720, and the other end of the coil spring 400 is pointed, so that the coil spring 400 can penetrate into the valve leaflet 800. In the process of conveying the valve clamping device, the valve clamping device is positioned in the through hole provided with the shifting fork 720, the spiral spring 400 is sleeved outside the shifting fork 720, when the valve clamping device is conveyed out of the conveyor, the valve clamping device extends out of the shifting fork 720, in the process of capturing the valve blade 800, the spiral spring 400 is positioned in the conveying pipe 710 of the conveyor to complete capturing of the valve blade 800, and when the upper clamping piece 200 and the lower clamping piece 300 are both approximately attached to the axis of the base 100, the spiral spring 400 is screwed out of the conveying pipe 710 by rotating the shifting fork 720, the upper clamping piece 200 and the valve blade 800 are penetrated and restrained by the spiral spring 400, and the upper clamping piece 200, the valve blade 800 and the lower clamping piece 300 are fixed into a whole. Set up axial fixity spare into coil spring 400, through using same conveyer alright realize coil spring 400's transport with the valve clamping device, through rotatory shift fork 720 alright realize the locking to the valve clamping device, need not to use other medical instrument, reduce cost to easy operation.
As another embodiment, the axial locking member includes a suture or a silicone ring, and specifically, the suture can be wound around the outside of the valve clamp or the silicone ring can be sleeved on the outside of the valve clamp, so as to lock the valve clamp, and the two methods restrict the bypass implantation of the device.
Embodiments of the present invention provide a valve clipping system comprising a transporter for transporting a valve clip to a heart and a valve clip according to the above embodiments.
Optionally, the valve clamping system further comprises a first constraint line 510 and a second constraint line 520, the first constraint line 510 passing through an end of the upper clip 200 distal to the base 100, the second constraint line 520 passing through an end of the lower clip 300 distal to the base 100 and the base 100; both free ends of the first constraint line 510 and both free ends of the second constraint line 520 pass through the carrier tube 710 of the carrier and extend out of the carrier.
Specifically, at the time of operation, the first restraint line 510 passes through the first through hole 210 and the two free ends protrude from the delivery tube 710 in the transporter, the second restraint line 520 passes through the two second through holes 330 and the two free ends pass from the upper side of the base 100 shown in fig. 1 to the lower side of the base 100 through the third through hole 110 and then pass from the other third through hole 110 to the upper side of the base 100 and then protrude from the delivery tube 710 in the transporter. When the valve clamping device is conveyed, the upper clamping piece 200 is attached to the axis of the base 100 by pulling the first constraint line 510, the lower clamping piece 300 is attached to the axis of the base 100 in a natural state, the whole valve clamping device is in a contraction state, and in the process of capturing the valve blade 800, the lower clamping piece 300 moves towards the direction far away from the axis of the base 100 by pulling the second constraint line 520, and the two lower clamping pieces 300 are opened, so that the valve blade 800 is favorably captured. The upper and lower clips 200 and 300 are controlled by the first and second constraint lines 510 and 520, respectively, to facilitate the operation.
In an embodiment, the transporter further includes a disengagement rod 610 and a disengagement wire 620, the disengagement rod 610 being removably coupled to the base 100, the disengagement wire 620 passing through the disengagement rod 610 and being threadably coupled to the base 100.
Specifically, the connecting rod 120 and the releasing rod 610 are hollow tubes, and the releasing rod 610 is located in the conveying tube 710 and sleeved outside the releasing wire 620. When the valve clamp is delivered, the releasing rod 610 and the connecting rod 120 are mutually engaged through the first engaging groove 121 and the second engaging groove, the releasing wire 620 passes through the releasing rod 610 and the connecting rod 120 and is in threaded connection with the base 100, and the releasing wire 620 plays a supporting role in the connection of the releasing rod 610 and the connecting rod 120 bracket and prevents the releasing rod 610 in the engaged connection from being separated from the connecting rod 120; in the process of capturing the valve leaflets 800, the valve clamp is driven to move by the matching of the release wire 620 and the release rod 610; after the locking of the valve clamping device is completed, the release wire 620 is rotated to separate the release wire 620 from the base 100, the release wire 620 is retracted, and the release rod 610 is rotated to separate the release rod 610 from the connecting rod 120, so that the delivery end is completely separated from the implant, and the implantation is completed.
In the operation process, the specific operation steps of the valve clamping device provided by the embodiment of the invention are as follows:
conveying state: as shown in fig. 2, with both the upper jaw 200 and the lower jaw 300 in the valve binder in a compressed state, the delivery device penetrates into the heart from the femoral vein and delivers the valve binder to the heart.
Blade capture state: as shown in FIG. 3, the upper clip 200 is attached to the release rod 610 by pulling the first constraint line 510, the lower clip 300 is in an open position by pulling the second constraint line 520, and the valve holder is lifted upward by pulling the release wire 620 and release rod 610, where the lower clip 300 can be seen in contact with the valve leaflet 800 under ultrasound or DSA conditions. After the lower clip 300 contacts the valve leaflet 800, as shown in fig. 4, the restraining lines of the upper clip 200 are released and the upper clip 200 and the lower clip 300 clamp the valve leaflet 800.
Axial locking preparation state: as shown in fig. 5, the upper clip 200, the lower clip 300, and the valve leaflet 800 are all in a state of being approximately adhered to the release rod 610 by pulling the first restraining wire 510 while releasing the second restraining wire 520.
And (3) locking state: as shown in FIG. 6, the fork 720 is rotated to rotate the axial locking member out of the delivery tube 710, thereby restricting the penetration of the upper clip 200 and the valve leaflet 800, and thus securing the upper clip 200, the valve leaflet 800 and the lower clip 300 together.
A disengaged state: the detachment wire 620 is rotated, the detachment wire 620 is separated from the base 100, the detachment wire 620 is retracted, the detachment rod 610 is rotated, and the separated delivery head end is completely separated from the implant, thereby completing the implantation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A valve clip, comprising: the clamping device comprises a base (100), and an upper clamping piece (200) and a lower clamping piece (300) which are arranged on the base (100), wherein the number of the upper clamping pieces (200) is equal to that of the lower clamping pieces (300), and the upper clamping pieces and the lower clamping pieces are arranged on the same side of the base (100) in a one-to-one correspondence manner;
the upper jaw (200) and the lower jaw (300) are both made of an elastic material, the upper jaw (200) has a tendency to move away from the axis of the base (100), and the lower jaw (300) has a tendency to move closer to the axis of the base (100).
2. The valve clip according to claim 1, wherein the upper clip (200) comprises a first edge, one end of which is connected to the base (100); the upper clip (200) has a tendency to move away from the axis of the base (100) by the pre-forming force after the shaping.
3. The valve clip according to claim 1, wherein the lower clip (300) comprises a second edge (310) and a third edge (320) arranged in parallel and spaced apart, the second edge (310) having a length equal to the length of the third edge (320), a first end of the second edge (310) being interconnected with a first end of the third edge (320), a second end of the second edge (310) and a second end of the third edge (320) being both connected with the base (100);
the lower clip (300) has a movement tendency close to the axis of the base (100) by the pre-forming force after shaping.
4. The valve clip according to claim 3, wherein the lower clip (300) comprises a second edge (310) and a third edge (320), a first end of the second edge (310) and a first end of the third edge (320) being connected to each other, a second end of the second edge (310) and a second end of the third edge (320) both being connected to the base (100); the length of the second side (310) is greater than the length of the third side (320).
5. The valve holder of claim 1, wherein the upper jaw (200) and the lower jaw (300) are made of nitinol wire or cobalt-based alloy wire.
6. The valve clamp according to claim 1, wherein a first through hole (210) is formed in an end portion, away from the base (100), of the upper clamping piece (200), a second through hole (330) is formed in an end portion, away from the base (100), of the lower clamping piece (300), a third through hole (110) is formed in the base (100), and the first through hole (210), the second through hole (330) and the third through hole (110) are all used for a constraint line to pass through.
7. The valve clip according to claim 1, wherein the base (100) is provided with a connecting rod (120), the connecting rod (120) being provided with a first connecting structure by which the connecting rod (120) is detachably connected with a release rod (610) in a carrier.
8. The valve binder of any of claims 1-7, further comprising an axial lock for securing the upper clip (200) in a position near the axis of the base (100) after the valve leaflets (800) are captured.
9. The valve binder of claim 8, wherein the axial locking member comprises a coil spring (400), the coil spring (400) is conveyed to the periphery of the upper jaw (200) by a fork (720) in a conveyor after the catching of the valve leaflet (800) is completed, and the coil spring (400) has a transmission beam which is matched with the plane of the fork (720).
10. A valve clipping system comprising a transporter for transporting the valve clip to the heart and a valve clip according to any of claims 1-9.
11. The valve clipping system of claim 10, further comprising a first restraining line (510) and a second restraining line (520), the first restraining line (510) passing through an end of the upper clip (200) distal from the base (100), the second restraining line (520) passing through an end of the lower clip (300) distal from the base (100) and the base (100);
both free ends of the first constraint line (510) and both free ends of the second constraint line (520) pass through the delivery tube (710) of the conveyor and protrude out of the conveyor.
12. The valve clamping system of claim 10, wherein the carrier comprises a release rod (610) and a release wire (620), the release rod (610) being removably coupled to the base (100), the release wire (620) passing through the release rod (610) and being threadably coupled to the base (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110881913.9A CN113499169A (en) | 2021-08-02 | 2021-08-02 | Valve clamping device and valve clamping system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110881913.9A CN113499169A (en) | 2021-08-02 | 2021-08-02 | Valve clamping device and valve clamping system |
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| CN113499169A true CN113499169A (en) | 2021-10-15 |
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| CN202110881913.9A Pending CN113499169A (en) | 2021-08-02 | 2021-08-02 | Valve clamping device and valve clamping system |
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| WO2023116368A1 (en) * | 2021-12-22 | 2023-06-29 | 上海微创心通医疗科技有限公司 | Cardiac valve repair device, and cardiac valve repair system |
| US11883290B2 (en) | 2018-04-24 | 2024-01-30 | Raghuveer Basude | Retrievable tissue grasping devices, spacers, artificial valves and related methods |
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