CN117503229A

CN117503229A - tissue closure device

Info

Publication number: CN117503229A
Application number: CN202210898820.1A
Authority: CN
Inventors: 杨梦立; 丁晟
Original assignee: Cilag GmbH International
Current assignee: Cilag GmbH International
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2024-02-06
Also published as: WO2024023233A1

Abstract

The invention relates to the technical field of tissue closure, and discloses a tissue closure device. The tissue closing device comprises a tube body, the tube body comprises two half tube parts which can be spliced together, a half suture needle channel groove is formed in the splicing surface of each half tube part, each suture needle channel groove comprises a curve groove section, when the two half tube parts are combined to form the tube body, the half suture needle channel groove on one half tube part and the half suture needle channel groove on the other half tube part are spliced to form a suture needle channel, the suture needle channel with a required shape is easier to form, during assembly, a suture needle and a needle operation piece are firstly placed on one half tube part, the other half tube part is spliced and connected on one half tube part, so that the suture needle is contained in the suture needle channel, the needle operation piece is positioned in the tube body, the convenience of the tissue closing device is improved, the suture needle can be stably moved through the guidance of the suture needle channel, the deviation of a puncture position is avoided, and the healing effect of a suture wound is improved.

Description

Tissue closure device

Technical Field

The invention relates to the technical field of tissue closure, in particular to a tissue closure device.

Background

At the time of surgery, a surgeon is often required to suture a wound to be sutured, such as an incision in the abdominal cavity, etc., of a patient using a tissue closure instrument.

Existing tissue closure devices require the use of a needle to pass from outside the skin through the tissue and into the abdominal cavity when suturing. For example, a surgeon needs to puncture a needle from one side to a puncture site, then withdraw the needle, and then puncture the needle from the other side to the puncture site, thereby placing a suture in place to complete the suturing.

However, existing tissue closure devices are not easy to assemble. In addition, in practice, due to the difference between individuals, when the puncture needle punctures into the abdominal cavity from outside to inside, the puncture position may be deviated, which may affect the effective healing of the wound.

Disclosure of Invention

The invention aims to improve the convenience of assembling a tissue closing device, so that a suture needle can be stably and reliably contained in a suture needle channel of a tube body and can stably and reliably move along the suture needle channel, and the safety of a surgical operation is improved.

In order to achieve the above object, the present invention provides a tissue closure device comprising: the pipe body comprises two half pipe parts which can be spliced together, a half suture needle channel groove is formed on the splicing surface of each half pipe part, each suture needle channel groove comprises a curve groove section, when the two half pipe parts are spliced to form the pipe body, a half suture needle channel groove on one half pipe part and a half suture needle channel groove on the other half pipe part are spliced to form a suture needle channel, wherein the curve groove sections form curve channel sections of the suture needle channels, and each half pipe part is provided with a needle outlet channel; a suture needle positioned within the suture needle channel; a needle operating member disposed on the tube and movable between a needle home position and a needle firing position; wherein the needle operating member is capable of driving the suture needle to obliquely extend from the needle outlet channel to a puncture position and is capable of allowing the suture needle to retract into the needle outlet channel.

In the tissue closing device, as the half suture needle channel grooves are formed on the splicing surface of each half tube part, each suture needle channel groove comprises a curve groove section, when the two half tube parts are combined to form a tube body, the half suture needle channel grooves on one half tube part and the half suture needle channel grooves on the other half tube part are spliced to form a suture needle channel, so that the suture needle channel with a required shape can be formed more easily, in addition, during assembly, a suture needle and a needle operating member can be firstly placed on one half tube part, and then the other half tube part is spliced and connected on the one half tube part, so that the suture needle is stably and reliably contained in the suture needle channel of the tube body and can stably and reliably move along the suture needle channel, and the needle operating member is conveniently located in the tube body, thereby improving the convenience of assembly of the tissue closing device.

In some embodiments, the split surface of each half pipe portion includes a curved surface section, and the curved groove section is formed on the curved surface section and extends along the curved surface direction.

In some embodiments, a plurality of independent half suture needle channel grooves are formed on the split surface of each half tube portion, when two half tube portions are combined to form the tube body, the plurality of half suture needle channel grooves on one half tube portion and the plurality of half suture needle channel grooves on the other half tube portion are respectively split to form a plurality of suture needle channels, wherein a plurality of suture needles are respectively positioned in the suture needle channels, and the needle operating member can drive a plurality of suture needles to move simultaneously so as to extend obliquely from the needle outlet channels to puncture positions simultaneously, and can allow a plurality of suture needles to retract into the respective needle outlet channels simultaneously.

In some embodiments, each of the needle channel grooves comprises a linear groove segment that is split to form a linear channel segment of the needle channel.

In some embodiments, one end of the curvilinear channel section serves as the needle outlet channel.

In some embodiments, the needle manipulation member is disposed at a proximal position of the tube body, and the manual manipulation portion of the needle manipulation member protrudes from the proximal port of the tube body.

In some embodiments, the needle operator is movable along an axial direction of the tube between the needle home position and the needle firing position.

In some embodiments, a movement guide structure is provided between the needle operator and the tube.

In some embodiments, the movement guide structure comprises a guide groove extending axially on the outer surface of the needle manipulation member and two half guide lugs on the half tube portions, the two half guide lugs being spliced together and fitted in the guide groove.

In some embodiments, a plurality of the suture needles and the needle manipulation member are directly connected.

In some embodiments, a plurality of spaced needle insertion holes are formed in a distal end face of the needle manipulation member, the plurality of needle insertion holes extend toward a proximal end of the needle manipulation member, a radial hole communicating with the plurality of needle insertion holes is formed in the needle manipulation member, and a locking pin is inserted into the radial hole, wherein one end of each of the plurality of suture needles is inserted into the respective needle insertion hole and simultaneously is in locking engagement with the locking pin.

In some embodiments, after the suture needle, the needle manipulation member, the driving member and the driving rod of the tissue closing device are disposed on one of the half-tube portions, the other half-tube portion is spliced on one of the half-tube portions, so that the suture needle, the needle manipulation member, the driving member and the driving rod are disposed in the tube body, wherein the driving member drives the stabilizing member at the distal end of the tissue closing device to be folded and unfolded through the driving rod.

In some embodiments, the tissue closure device further comprises a driver disposed in the tube and configured to move between a stabilizer initial position that urges a stabilizer at a distal end of the tissue closure device to collapse and a deployed stabilizer firing position.

In some embodiments, the needle manipulator allows the driver to transition between the stabilizer initial position and the stabilizer fired position when in the needle initial position; the needle operator blocks the drive member from returning from the stabilizer firing position to the stabilizer initial position when in the needle firing position.

In some embodiments, the driver is movable along an axial direction of the tube between the stabilizer initial position and the stabilizer fired position.

In some embodiments, the driver has an axial passage formed therein through which the needle passes.

In some embodiments, the tissue closure device further comprises a drive rod positioned within the tube, the proximal end of the drive rod and the drive member being directly connected, the distal end of the drive rod extending from the distal end of the tube to connect the stabilizing member.

In some embodiments, the distal end face of the driving member is formed with an axially extending central hole, the driving member is formed with a radial channel in communication with the central hole, and a locking shaft is disposed in the radial channel, wherein the proximal end of the driving rod is inserted into the central hole and is in locking fit with the locking shaft.

In some embodiments, a half driving rod channel groove is formed on each half pipe portion, and when two half pipe portions are combined to form the pipe body, the half driving rod channel groove on one half pipe portion is combined with the half driving rod channel groove on the other half pipe portion to form a driving rod accommodating channel, and the driving rod is axially movably arranged in the driving rod accommodating channel.

In some embodiments, each half-pipe portion is formed with an axially spaced snap-fit opening and a drive opening, wherein the drive member comprises an axially spaced snap-fit and drive portion, wherein the drive portion is located within the drive opening; when the buckle is clamped in the clamping opening, the driving piece is positioned at the initial position of the stabilizing piece; when the buckle is clamped in the driving opening, the driving piece is positioned at the firing position of the stabilizing piece.

In some embodiments, the needle operator blocks the catch from backing out of the drive opening when in the needle firing position to block the drive member from returning from the stabilizer firing position to the stabilizer initial position.

In some embodiments, the driver includes a cantilever, the catch and the driver are disposed on the cantilever, and the catch is located at a proximal end of the cantilever.

In some embodiments, the needle manipulation member has an axially extending groove formed therein, wherein the cantilever arm is located outside the groove when the needle manipulation member is axially moved to the needle home position; wherein the cantilever slides into the recess when the needle operator is axially moved to the needle firing position.

Drawings

For a better understanding of the above and other objects, features, advantages and functions of the present invention, reference should be made to the preferred embodiments illustrated in the accompanying drawings. The same or similar reference numbers in the drawings refer to the same or similar parts. It will be appreciated by persons skilled in the art that the drawings are intended to schematically illustrate preferred embodiments of the invention, and that the scope of the invention is not limited in any way by the drawings, and that the various components are not drawn to scale.

FIG. 1 is a schematic perspective view of one state of a tissue closure device in accordance with an embodiment of the present invention, wherein the needle operator is in a needle cocked position and the stabilizer is in a deployed position.

Fig. 2 is a schematic perspective view of another state of the tissue closure device of fig. 1, wherein the needle manipulator is in a needle home position and the stabilizer is in a collapsed position.

Fig. 3 is a perspective view of the tissue closure device of fig. 1 with the tube removed.

Fig. 4 is a perspective view of the tissue closure device of fig. 2 with the body removed.

Fig. 5 is a perspective view of the tissue closure device of fig. 1 with one half of the tube removed.

Fig. 6 is a schematic perspective view of another view of fig. 5.

Fig. 7 is a perspective view of the tissue closure device of fig. 2 with one half of the tube removed.

Fig. 8 is a schematic cross-sectional view of the tissue closure device of fig. 1 in one position.

Fig. 9 is a schematic perspective view of a view of the needle operating member of the tissue closure device of fig. 1.

Fig. 10 is a schematic perspective view of another view of the needle operating member of fig. 9.

Fig. 11 is a schematic perspective view of one view of the driver of the tissue closure device of fig. 1.

Fig. 12 is a perspective view of another view of the driving member of fig. 11.

Fig. 13 is a schematic perspective view of one half of the tube of the tissue closure device of fig. 1.

Fig. 14 is a schematic perspective view of one view of two halves of a tube of the tissue closure device of fig. 1.

Fig. 15 is an exploded view of the needle operator and suture needle of the tissue closure device of fig. 1 engaged.

FIG. 16 is a partial schematic view of the needle operating member, suturing needle, driver and drive rod of the tissue closure device of FIG. 1 mated together.

Fig. 17 is a schematic view of a first needle tip shielding structure of a tissue closure device according to an embodiment of the present invention, wherein the shielding plate is in the shielding position.

Fig. 18 is a schematic side view of the structure of fig. 17.

Fig. 19 is a perspective view of the shield plate of the needle tip shielding structure of fig. 17 in a retracted position.

Fig. 20 is a schematic side view of the structure of fig. 19.

Fig. 21 is a schematic view of a second needle tip shielding structure of a tissue closure device according to an embodiment of the present invention, wherein the shielding plate is in the shielding position.

Fig. 22 is a schematic view of a third needle tip shielding structure of a tissue closure device according to an embodiment of the present invention, wherein the shielding plate is in the shielding position.

Fig. 23 is a perspective view of the fender panel of fig. 22, wherein the fender panel is in a natural state in a retracted position.

Fig. 24 is a perspective view of the stabilizer of fig. 22.

Fig. 25 is a perspective view of another shield plate, wherein the shield plate is in a natural state in a retracted position.

Fig. 26 is a perspective view of another shield plate, wherein the shield plate is in a natural state in a retracted position.

Fig. 27 is a perspective view of another shield plate, wherein the shield plate is in a natural state in a retracted position.

Fig. 28 is a perspective view of another shield plate, wherein the shield plate is in a natural state in a retracted position.

Fig. 29 is a perspective view of another shield plate, wherein the shield plate is in a natural state in a retracted position.

FIG. 30 is a partial block diagram of a tube of an tissue closure device showing a routing incision, in accordance with embodiments of the present invention.

Fig. 31 is a partial structural view of the pipe body of fig. 30 from another view, showing a wiring cut.

Fig. 32 is a schematic side view of the tube of fig. 30.

FIG. 33 is a schematic view showing the structure of the inner needle.

FIG. 34 is a partial block diagram of a tube of an tissue closure device showing another routing incision, in accordance with embodiments of the present invention.

FIG. 35 is a partial block diagram of a tube body of an tissue closure device showing a wiring structure, according to an embodiment of the present invention.

Description of the reference numerals

1-tube, 2-needle exit channel, 3-suture needle, 4-stabilizer, 5-needle operator, 6-driver, 7-needle tip shielding structure, 8-manual operator, 9-guide slot, 10-guide tab, 11-needle insertion hole, 12-radial hole, 13-locking pin, 14-suture needle channel, 15-straight groove segment, 16-curvilinear groove segment, 17-half-tube, 18-suture needle channel groove, 19-driver, 20-central hole, 21-radial channel, 22-locking shaft, 23-driver channel groove, 24-driver receiving channel, 25-snap opening, 26-drive opening, 27-snap, 28-driver, 29-cantilever, 30-guide groove, 31-wire routing slot, 32-entry segment, 33-clip slot, 34-withdrawal slot, 35-elastic block, 36-wire routing slot, 37-shielding tab, 38-grid tab, 39-suture securing portion, 40-attachment slot, 41-axial channel, 42-43-clip slot, 45-clip slot, 48-clip slot, and 48-clip slot, 47-clip slot, and side-clip slot.

Detailed Description

In the following detailed description of the embodiments, reference is made to the accompanying drawings, which form a part hereof. The accompanying drawings show, by way of illustration, specific embodiments in which the invention may be practiced. The embodiments shown are not intended to be exhaustive of all embodiments according to the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. For the drawings, directional terms, such as "lower", "upper", "left", "right", etc., are used with reference to the orientation of the drawings as described. These directional terms are used for purposes of illustration and not limitation, as the components of embodiments of the present invention can be implemented in a variety of orientations. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

In addition, in the present invention, reference hereinafter to "proximal" is to the end of the tissue closure device that faces the operator in use, and "distal" is to the end of the tissue closure device that faces away from the operator in use.

Referring to fig. 1 to 4, the tissue closing device provided in the embodiment of the present invention includes a tube body 1, a plurality of suture needles 3, and a needle operating member 5, wherein the tube body 1 is formed with a plurality of needle outlet passages 2, the plurality of suture needles 3 are located in the tube body 1, and the needle operating member 5 is provided on the tube body 1 and is movable between a needle initial position and a needle firing position; wherein, the needle operation piece 5 can drive the plurality of suture needles 3 to move simultaneously so as to extend obliquely from the corresponding needle outlet channels 2 to the puncture positions simultaneously; the needle operating member 5 allows a plurality of suture needles 3 to be simultaneously moved to be simultaneously withdrawn into the respective corresponding needle outlet passages 2.

In the tissue closing device, the needle operation piece 5 can drive the plurality of suture needles 3 to move simultaneously so as to extend out of the needle outlet channel 2 obliquely and penetrate through tissues at the same time and then move to the puncture position, so that the needle operation piece 5 can drive the plurality of suture needles 3 to the puncture position at one time, the consistency and the symmetry of the puncture position can be improved, the puncture position is prevented from being deviated, and the safety of surgical suture is improved.

In addition, in some embodiments, multiple suture needles may be located directly within the lumen of the tube 1, and the needle manipulator 5 may drive multiple suture needles 3 through other possible structures to simultaneously extend diagonally from the needle exit channel 2. Alternatively, in other embodiments, referring to fig. 8, a plurality of separate needle channels 14 are provided within the tube 1, each needle 3 being movably located within a respective needle channel 14, each needle channel 14 comprising a curved channel section such that the needle 3 can be bent along the curved channel section to enable a plurality of needles 3 to simultaneously extend obliquely from a respective corresponding needle outlet channel 2 to the puncture location. In this way, by means of the needle channel 14, the needle 3 can be further made to extend from the outlet channel 2 or retract into the tube body 1 with a desired movement path, while the curved channel section can further ensure that the needle 3 can extend from the outlet channel 2 to a predetermined penetration position with a desired inclination.

In addition, in the tissue closing device, the suture needle 3 has flexibility and pliability, so that the plurality of suture needles 3 can reach the puncture position by the drive of the needle operating member 5 under the limitation of the shape of the suture needle passage 14. In some embodiments, referring to fig. 3, 6 and 8, when the plurality of suture needles 3 are spatially interleaved, the line between the distal ends of the plurality of suture needles 3 is generally on the lateral (radial) centerline of the tissue closure device, which may further precisely control the consistency and symmetry of the penetration location of the needle tip of the suture needles.

In addition, the curvilinear channel section may have any shape that allows movement of the needle 3, and may be located at any desired location in the needle channel 14. For example, needle channel 14 may include a plurality of curvilinear channel segments at desired locations, e.g., needle channel 14 may be formed from a plurality of identical or different curvilinear segments connected in sequence.

In addition, in the tissue closing device, in order to improve the smoothness of movement of the suture needle 3, it is more convenient for an operator to operate the suture needle 3, and in some embodiments, referring to fig. 5-7, each suture needle channel 14 includes a straight channel section and a curved channel section, so that the straight channel section can facilitate movement of the suture needle 3 within the suture needle channel 14, and the curved channel section can enable a plurality of suture needles to obliquely extend from the respective corresponding needle outlet channels 2 to the puncture positions. For example, in some embodiments, the curved channel segments of the spatial cross arrangement may be such that a plurality of suture needles extend obliquely from the respective corresponding needle outlet channel 2 to the puncture location in a spatial cross manner.

In addition, in some embodiments, the straight channel section and the curved channel section may be located on the same side of the tube body 1, e.g., in a cross section of the tube body 1, the straight channel section is disposed near an edge of the tube body 1, while the curved channel section extends at the edge of the same side. Alternatively, in other embodiments, referring to fig. 14, in the radial direction of the tube body 1, a straight channel section is located at one side of the tube body 1, a curved channel section extends from one side of the tube body 1 to the other side, and one end of the curved channel section serves as the needle outlet channel 2 or communicates with the needle outlet channel 2. In this way, the interior of the tube 1 may be sufficiently filled to properly arrange the needle channel 14 so that the needle operating member 5 may more easily drive the movement of a plurality of suture needles 3, such as the two suture needles 3 shown. For example, in fig. 3-8, two needle channels 14 are arranged to intersect in space, e.g., two needle channels 14 are arranged symmetrically with respect to the center of the tube body 1.

In addition, in the tissue closure device, the tube 1 may be of various types, for example, in some embodiments, the tube 1 may be an injection molded unitary piece. Alternatively, in other embodiments, the tubular body 1 may be formed from multiple pieces that are joined together to more easily form the needle channel 14 in which the needle is disposed. For example, in some embodiments, the tubular body 1 may include a plurality of tubular sections, at least some of which have corresponding axial passages, which may be connected in sequence along an axial direction to form one tubular body, and which communicate to form the needle passage 14. In other embodiments, referring to fig. 1, 13 and 14, the plurality of members includes two half-tube portions 17, that is, the tube body 1 includes two half-tube portions 17 capable of being spliced together, each half-tube portion 17 is formed with a desired number, for example, one half of the needle channel grooves 18, or a plurality of mutually independent half of the needle channel grooves 18, and when the two half-tube portions 17 are combined to form the tube body 1, for example, the plurality of half-needle channel grooves 18 on one half-tube portion 17 and the plurality of half-needle channel grooves 18 on the other half-tube portion 17 are respectively spliced to form the plurality of needle channels 14, the two half-tube portions 17 may be bonded, snapped, heat-fused or otherwise connected together. By such two half-tube portions 17, it is possible to more easily form the needle passage 14 of a desired shape. Of course, in other embodiments, the plurality of members may be three or four tubes, i.e., dividing the cross section of the tube body 1 into three or four portions.

For example, in some embodiments, during assembly, the suture needle 3 and the needle operating member 5 may be placed on one half tube portion 17, and then the other half tube portion 17 is spliced and connected to the one half tube portion 17, so that the suture needle 3 is stably and reliably accommodated in the suture needle channel 14 of the tube body and can be stably and reliably moved along the suture needle channel, and at least a part of the needle operating member 5 is conveniently located in the tube body, thereby improving the convenience of assembling the tissue closing device, and in addition, the suture needle can be stably moved by guiding the suture needle 3 through the suture needle channel 14, avoiding the deviation of the puncture position, and improving the healing effect of the suture wound.

In addition, in some embodiments, each needle channel groove 18 includes a straight groove segment 15 on one side in the radial direction of the tube 1 and a curved groove segment 16 extending from side to side. Thus, the straight groove sections 15 may be spliced to form straight channel sections and the curved groove sections may be spliced to form curved channel sections. In some embodiments, referring to fig. 5-7 and fig. 13 and 14, the split surface of each half pipe 17 includes a curved surface section, and the curved groove section 16 is formed on the curved surface section and extends along the curved surface direction, so that the curved groove section 16 can extend from one side to the other side, and after the two half pipe sections 17 are split, the two curved groove sections 16 are split to form a curved channel section. For example, the needle may be placed in the needle channel half groove 18 of one half tube portion 17, and then the other half tube portion 17 may be spliced to the one half tube portion 17, so that the needle is disposed within the needle channel 14.

In addition, in some embodiments, referring to fig. 3 and 4, the tissue closure device comprises a stabilizer 4 and a driver 6, wherein the stabilizer 4 is disposed on the tube 1 and is movable between a deployed position and a collapsed position; wherein the driving piece 6 is arranged in the tube body 1 and can move between a stabilizing piece initial position and a stabilizing piece firing position; wherein, driving piece 6 can drive stabilizer 4 motion, and in stabilizer initial position, stabilizer 4 is in the folding position, and in stabilizer percussion position, stabilizer 4 is in the expansion position. The number of stabilizers 4 may be one or more, for example two. Thus, the distal end of the tube body 1 can be extended into the to-be-sutured combination, and then the driving member 6 is moved from the initial position of the stabilizing member to the firing position of the stabilizing member, so that the stabilizing member 4 is moved from the folded position to the unfolded position, and after the tube body 1 is pulled outwards, the stabilizing member 4 can be stably and reliably pressed against the inner wall of the to-be-sutured tissue.

In addition, in some embodiments, the tissue closure device may not be provided with a needle tip shielding structure 7. Alternatively, in other embodiments, to promote safety, in order to avoid that the needle tip of the needle may cause damage to surrounding organs during movement of the needle to the puncture site, referring to fig. 1 and 2, the tissue closure device comprises a needle tip shielding structure 7 having a retracted position and a shielding position, wherein the needle tip shielding structure 7 is capable of shielding the needle tip of the needle 3 during the movement of the needle from the retracted position to the shielding position and during the movement of the needle from the retracted position to the shielding position by the needle tip shielding structure 7. Thus, in the puncturing process of the suture needle 3 and in the shielding position, the needle point shielding structure 7 can always shield the needle point of the suture needle 3, so that the needle point is prevented from leaking outwards, and the risk that the needle point may damage surrounding organs is effectively avoided.

In this tissue closure device, the needle tip shielding structure 7 may be of various types, for example, in one type, the needle tip shielding structure 7 may include a body and a protective cap, the protective cap may be connected to the body by a flexible connection strip, and the protective cap is located on a moving path of the suture needle, so that the protective cap may be sleeved on the needle tip during the puncturing process of the suture needle 3 and in a shielding position, so as to avoid leakage of the needle tip, and the flexible connection strip may always connect the protective cap to the body, so as to avoid falling of the protective cap.

In another type of needle tip shielding structure 7, referring to fig. 23, the needle tip shielding structure 7 includes a shielding surface 46 against which the needle tip of the suture needle 3 may abut during movement and in the puncture position. Alternatively, among other types of needle tip shielding structures 7, referring to the different types of needle tip shielding structures shown in fig. 17 to 29, the needle tip shielding structure 7 includes a shielding surface 46 against which the needle tip of the suture needle 3 abuts, and shielding protrusions 37 are formed on the shielding surface 46, and in the puncture position, the needle tip of the suture needle 3 is stopped against the shielding protrusions 37. In this way, both during penetration of the needle 3 and in the shielding position, the tip of the needle 3 can abut against the shielding surface, while the shielding protrusion 37 prevents the needle 3 from being detached from the shielding surface.

In addition, the guard protrusion 37 may have various structural types, for example, in one structural type, referring to fig. 17 to 20, a circumferential edge of the guard surface is formed with a circle of protrusions as the guard protrusion 37. Alternatively, in another construction type, referring to fig. 26, the guard surface is formed with the grid-like projections 38, and the edges of the grid-like projections 38 serve as the guard projections 37. The grid-like projections 38 may comprise transverse projections and vertical projections that are arranged crosswise, or may comprise oblique projections that are arranged diagonally crosswise, or may comprise a plurality of connected circular or elliptical projections.

In other structural types of the shielding projections 37, referring to fig. 27 to 29, a plurality of shielding projections 37 may be arranged on the shielding face at intervals in a direction away from the pipe body 1. That is, the plurality of shielding projections 37 are not arranged to cross each other but are arranged to be spaced apart from each other. For example, in some embodiments, referring to fig. 27 and 28, each of the guard projections 37 extends straight, i.e., each of the guard projections 37 is in a straight bar shape, and the plurality of guard projections 37 are arranged in a wave shape or in a zigzag shape. In other embodiments, referring to fig. 29, each of the guard projections 37 extends in a V-shaped manner, that is, each of the guard projections 37 is V-shaped, and the plurality of guard projections 37 are arranged in a wave shape or in a zigzag shape.

Furthermore, in other types of the needle tip shielding structure 7, referring to fig. 1, 17, 21 and 22, the needle tip shielding structure 7 includes a plurality of stabilizers 4 and a plurality of shielding plates 42 each having a shielding surface (for example, two stabilizers 4 and two shielding plates 42 shown in the drawings), one shielding plate 42 is provided on one stabilizer 4, wherein in the puncture position, each suture needle 3 passes through the suture fixing portion 39 of the corresponding stabilizer 4 to turn the shielding plate 42 from the retracted position, in which the plurality of shielding plates 42 are located inside the corresponding stabilizer 4, respectively, to thereby ensure that the outer surface of the stabilizer 4 is free from protrusions to facilitate access to tissues, and in the shielding position, the needle tip of the suture needle 3 is stopped against the shielding protrusion 37. In this way, each suture needle 3 can drive the corresponding protection plate 42 to turn over, and in the process of turning over, each protection plate 42 can provide good protection for the corresponding suture needle 3 and avoid the needle tip from leaking outwards.

Additionally, in some embodiments, the shield 42 may be elastomeric and capable of returning from the shielding position to the retracted position under its own elastic force. For example, the shielding plate 42 may be a rubber plate, or a silicone plate. In this way, after the plurality of suture needles 3 are separated from the shielding plate 42, the shielding plate 42 can be restored to the retracted position by its own elastic force.

In addition, in some embodiments, the plurality of stabilizers 4 can squeeze the plurality of shielding plates 42 when collapsed to return the plurality of shielding plates 42 from the shielding position to the retracted position. For example, one end of the protection plate 42 may be connected to the stabilizer 4 through a connection pin. In this way, the plurality of stabilizers 4 will drive the plurality of shielding plates 42 back to the retracted position when collapsed.

In addition, the shield plate 42 may be attached at any position of the stabilizer 4 as long as it can provide shielding to the needle tip. For example, in some embodiments, referring to fig. 1 and 22, a plurality of shielding plates 42 are respectively connected to ends of the plurality of stabilizers 4 away from the tube body 1 such that the plurality of shielding plates 42 are outwardly spread away from each other to a shielding position by the driving of the suture needle. Alternatively, in other embodiments, referring to fig. 17-18 and 21, a plurality of shielding plates 42 are respectively connected to the other ends of the plurality of stabilizers 4 near the tube body 1 such that the plurality of shielding plates 42 are inwardly spread toward each other to a shielding position by the driving of the suture needle.

In addition, the stabilizer 4 may be formed with a receiving cavity 47, and the shielding plate 42 may be positioned in the receiving cavity 47 in the retracted position. In addition, the protection plate 42 may be connected to the stabilizer 4 by various connection methods, for example, in one connection method, a clamping groove 44 is formed on the stabilizer 4, and a clamping edge 45 at one end of the protection plate 42 may be clamped in the clamping groove 44. Alternatively, in another connection, the protection plate 42 may be connected to the stabilizer 4 through a support shaft or a rotation shaft.

In addition, in some embodiments, in order to further enhance the shielding effect of the needle tip, in the puncture position, the thread hanging openings 40 on one side surface of the plurality of suture needles 3 face the protecting surface, so that the protecting surface can isolate the mouth edge of the thread hanging openings 40 from surrounding possible organs, and can thoroughly avoid the mouth edge of the thread hanging openings 40 from contacting the surrounding possible organs, thereby enhancing the safety of suture needle transmission.

Further, in some embodiments, the side wall of the tube body 1 may be formed with an opening, such as an axially extending strip-shaped opening or a spiral-shaped opening, from which the manual operation portion 8 of the needle operation member 5 may radially protrude, so that the manual operation portion 8 may be linearly moved axially along the strip-shaped opening, or the manual operation portion 8 may be moved along the spiral-shaped opening. Alternatively, in other embodiments, referring to fig. 1 and 2, the needle operating member 5 is provided at a proximal end position of the tube body 1, and the manual operating portion 8 of the needle operating member 5 protrudes from a proximal end port of the tube body 1, so that an opening formed on a side wall of the tube body 1 can be avoided, whereby the self strength of the tube body 1 can be improved while reducing the wall thickness of the tube body 1. At this time, the operator can easily operate the manual operation portion 8 at the proximal end position of the tube body 1, for example, press the manual operation portion 8 or rotate the manual operation portion 8, thereby driving a plurality of, for example, two suture needles 3 to move simultaneously.

In addition, in some embodiments, the needle operating member 5 may be turned, for example, the needle operating member 5 may be turned at the proximal end port of the tube 1, or the needle operating member 5 may be turned along a spiral opening on the side wall of the tube 1, the needle operating member 5 and the suture needle mounting seat may be connected by a screw thread, the suture needle mounting seat is axially movably disposed in the tube 1, and the two suture needles 3 are connected to the suture needle mounting seat, so that the needle operating member 5 may drive the suture needle mounting seat to reciprocate axially when rotating positively and negatively, thereby driving the two suture needles 3 to move simultaneously. Alternatively, in other embodiments, referring to fig. 1 and 2, the needle operating member 5 is movable along the axial direction of the tubular body 1 between the needle firing position and the needle home position, such that axial movement of the needle operating member 5 may more quickly drive movement of the two suture needles 3, and may further simplify and compact the structure of the tissue closure device.

In addition, in some embodiments, the outer diameter of the needle manipulation member 5 may be the same as the inner diameter of the tube body 1, such that the inner surface of the tube body 1 may be in full contact with the outer surface of the needle manipulation member 5 for movement guiding. Alternatively, in other embodiments, in order to reduce the contact area between the tubular body 1 and the needle operating member 5, the needle operating member 5 is easier to axially move, a movement guiding structure is provided between the needle operating member 5 and the tubular body 1, and the movement guiding structure defines a needle firing position and a needle initial position of the needle operating member 5. In this way, the movement guide structure ensures stable and reliable axial movement of the needle operating member 5 between the needle firing position and the needle home position, and in addition, this allows a reduction in the contact area between the outer surface of the needle operating member 5 and the inner surface of the tube body 1, that is, the needle operating member 5 and the tube body 1 are contacted only by the movement guide structure, and a gap is maintained between the needle operating member 5 and the other portion of the tube body 1, so that it is easier to axially move the needle operating member 5 to drive the two suture needles 3 simultaneously to extend and retract.

Of course, in the tissue closure device, the movement guiding structure may be of various types, for example, in some types, the movement guiding structure comprises two axially spaced flanges formed on the needle operating member 5, the two flanges being in contact with the inner surface of the tube body 1. Alternatively, in other types, referring to fig. 9-10 and 13-14, the movement guiding structure comprises an axially extending guiding groove 9 on the outer surface of the needle manipulation member 5 and a guiding projection 10 on the inner surface of the tube body 1, the guiding projection 10 fitting within the guiding groove 9, e.g. in some embodiments, two half tube portions 17 each have half guiding projections 10 formed thereon, and the two half guiding projections 10 may be split together and fit within the guiding groove 9. In this way, the mating guide projection 10 and guide groove 9 not only ensure a stable and reliable axial movement of the needle operating member 5, but also avoid unnecessary rotation of the needle operating member 5. In addition, the axial length of the guide groove 9 corresponds to the needle firing position and the needle initial position, that is, both ends of the guide groove 9 in the axial direction define the needle firing position and the needle initial position of the needle operating member 5, the needle operating member 5 being located at the needle firing position when the guide projection 10 abuts on one end of the guide groove 9, the two suture needles 3 being located at the puncture position when the guide projection 10 abuts on the other end of the guide groove 9, the needle operating member 5 being located at the needle initial position, when the two suture needles 3 are retracted into the tube body 1, for example, just within the respective needle outlet passages 2.

In addition, in some embodiments, the two suture needles 3 may be connected by an intermediate transition piece, such as the aforementioned suture needle mount and needle manipulator 5. Alternatively, in other embodiments, referring to fig. 15, a plurality of, for example, two suture needles 3 are directly connected to the needle manipulating member 5, for example, a mounting section of one end of the suture needle 3 has a limiting plane, and the mounting section may be directly inserted into a limiting hole of the needle manipulating member 5. Thus, the two suture needles 3 and the needle operation piece 5 can be conveniently assembled, the convenience of assembly is improved, and the needle operation piece 5 can be conveniently and directly used for accurately driving the two suture needles 3 to move simultaneously.

In addition, in the tissue closing device, a plurality of suture needles (for example, two suture needles 3) may be connected to the needle operating member 5 in various manners. For example, in some embodiments, one end of the suture needle 3 is formed with a threaded section that is threadably coupled to a threaded bore in the needle operating member 5. Alternatively, referring to fig. 15, a plurality of, for example, two radially spaced needle insertion holes 11 are formed in a distal end face of the needle operating member 5, a plurality of, for example, two needle insertion holes 11 extend toward a proximal end of the needle operating member 5, a radial hole 12 communicating with the plurality of needle insertion holes 11 is formed in the needle operating member 5, and a locking pin 13 is inserted into the radial hole 12, wherein one end of the plurality of suture needles 3 is inserted into the respective needle insertion holes 11 and simultaneously is in locking engagement with the locking pin 13. For example, in some embodiments, one locking pin 13 is simultaneously in locking engagement with one end of two suture needles 3.

In addition, in some embodiments, referring to fig. 3 and 4, the needle operator 5 allows movement of the driver 6 between the stabilizer firing position and the stabilizer home position when in the needle home position, and the needle operator 5 blocks return of the driver 6 from the stabilizer firing position to the stabilizer home position when in the needle firing position. Thus, when the suture needle is not retracted into the tube body 1, the situation that the suture needle is deformed to damage other organs possibly existing around due to the unexpected retraction of the stabilizer 4 can be avoided, and the safety is improved. Therefore, only after the needle operating member 5 is moved from the needle firing position to the needle home position such that the suture needle is fully retracted into the tube body 1, the driving member 6 can be moved from the stabilizer firing position to the stabilizer home position such that the stabilizer 4 is moved from the deployed position to the retracted position.

In addition, in the tissue closing device, similarly to the needle manipulation member 5, the driving member 6 may be rotatably provided, for example, the driving member 6 may be rotated at the proximal end port of the tube body 1, or the driving member 6 may be rotated along a spiral opening on the side wall of the tube body 1, the driving member 6 is connected with a connecting rod or driving rod by a screw-threaded engagement manner, the connecting rod or driving rod is axially movably provided in the tube body 1 and connected with the stabilizing member 4, and thus, the driving member 6 can drive the connecting rod or driving rod to reciprocate axially when being positively and negatively rotated, thereby driving the stabilizing member 4 to be unfolded and folded.

Alternatively, in other embodiments, referring to fig. 1 and 2, the driver 6 is movable along the axial direction of the tube 1 between the stabilizer initial position and the stabilizer firing position, such that axial movement of the driver 6 may more quickly drive the stabilizer to expand and collapse, and may further simplify and compact the structure of the tissue closure device.

In addition, in some embodiments, referring to FIG. 16, the driver 6 has a plurality of radially spaced axial passages 41 formed therein, with a plurality of suture needles 3 passing through each of the corresponding axial passages 41. In this way, the driving member 6, the needle operating member 5 and the plurality of suture needles 3 can be arranged by fully utilizing the inner space of the tube body 1, so that the volume of the tube body 1 is smaller and the inner structure of the tissue closure device is more compact.

Alternatively, the driving member 6 may be directly connected to one or more stabilizing members 4. Alternatively, referring to fig. 16, the tissue closure device further comprises a drive rod 19 positioned within the tube body 1, the proximal end of the drive rod 19 being directly connected to the drive member 6, and the distal end of the drive rod 19 extending from the distal end of the tube body 1 to connect the plurality of stabilizing members 4. In this way, since the driving lever 19 is utilized, the volume of the driving piece 6 can be effectively reduced, and the assembly of the driving lever 19 is easier.

In addition, the driving member 6 and the driving rod 19 may be welded. Alternatively, the connection may be hot melt. Alternatively, in some embodiments, referring to fig. 11 and 12, an axially extending central bore 20 is formed in the distal end face of the driver 6, a radial passage 21 is formed in the driver 6 in communication with the central bore 20, and a locking shaft 22 is disposed in the radial passage 21, wherein the proximal end of the driver rod 19 is inserted into the central bore 20 and is in locking engagement with the locking shaft 22.

In addition, in some embodiments, to facilitate assembly of the tissue closure device, referring to fig. 13 and 14, the tube body 1 includes two half tube portions 17 capable of being spliced together, each half tube portion 17 is formed with a half drive rod channel groove 23, when the two half tube portions 17 are combined to form the tube body 1, the half drive rod channel groove 23 on one half tube portion 17 is spliced with the half drive rod channel groove 23 on the other half tube portion 17 to form a drive rod receiving channel 24, and the drive rod 19 is axially movably disposed within the drive rod receiving channel 24. For example, in some embodiments, in each half tube portion 17, half drive rod channel groove 23 is located between two mating surfaces.

In addition, in some embodiments, referring to fig. 8, the two half-tube portions 17 may be identical, for example, each half-tube portion 17 may include two split surfaces arranged at intervals and having a height difference, each split surface having a needle channel groove 18 formed thereon, and a portion between the two split surfaces may serve as one half of the drive rod channel groove 23, such that when the two identical half-tube portions 17 are split, the split surfaces are shape-fittingly connected such that the needle channel grooves 18 form the needle channel 14 and the two needle channel grooves 18 are split with each other to form the drive rod receiving channel 24, as shown in fig. 8.

In addition, referring to fig. 1 and 13, in some embodiments, the side wall of the tube body 1 is formed with axially spaced snap openings 25 and drive openings 26, wherein the driver 6 includes axially spaced snaps 27 and a driver 28, wherein the driver 28 is always located within the drive openings 26 during axial movement of the driver 6; when the buckle 27 is clamped in the clamping opening 25, the driving piece 6 is positioned at the initial position of the stabilizing piece; wherein, when the buckle 27 is clamped in the driving opening 26, the driving piece 6 is in the stable piece firing position. Thus, the operator presses the driving portion 28, so that the driving member 6 can be moved from the initial position to the firing position after the buckle 27 is separated from the clamping opening 25. Likewise, the operator presses the driving portion 28, so that the driving member 6 can be moved from the stabilizer firing position to the stabilizer initial position after the buckle 27 is separated from the driving opening 26.

Additionally, in some embodiments, the operator may operate the drive portion 28 such that the drive member 6 moves between the stabilizer initial position and the stabilizer firing position. Alternatively, in other embodiments, the driving member 6 is connected with an elastic member, such as a spring 43, and the elastic member can be in an energy storage state when the driving member 6 moves from one of the initial position of the stabilizing member and the firing position of the stabilizing member to the other, and the elastic member can drive the driving member 6 to return easily when the elastic member releases energy.

In addition, as described above, the needle operating member 5 blocks the driving member 6 from returning from the stabilizer firing position to the stabilizer initial position when in the needle firing position, and at this time, the needle operating member 5 blocks the catch 27 from coming out of the driving opening 26 when in the needle firing position to block the driving member 6 from returning from the stabilizer firing position to the stabilizer initial position.

In addition, in some embodiments, in order to enhance the convenience of the pressing operation of the driving part 28, referring to fig. 11 and 12, the driving part 6 includes a cantilever 29, the catch 27 and the driving part 28 are disposed on the cantilever 29, and the catch 27 is located at the proximal end of the cantilever 29. Thus, by the suspended arrangement of the cantilever 29, the operator applies a small force to the driving portion 28, i.e., the clasp 27 can be moved away from the clasp opening 25 and the driving opening 26.

In addition, in some embodiments, referring to fig. 9 and 10, the needle operating member 5 is formed with an axially extending guide groove 30, wherein the cantilever 29 is located outside the guide groove 30 when the needle operating member 5 is axially moved to the needle initial position; wherein the cantilever 29 slides into the guiding recess 30 when the needle operating member 5 is axially moved to the needle firing position. Thus, by the guide engagement of the guide groove 30 and the cantilever 29, the needle operating member 5 can be axially moved more stably and reliably to bring the plurality of suture needles to move more smoothly. Meanwhile, when the cantilever 29 slides into the guide groove 30, the guide groove 30 can block the cantilever 29 from moving radially inwards, so that the buckle 27 can be blocked from moving away from the driving opening 26, and the driving piece 6 can be blocked from returning to the initial position of the stabilizing piece from the trigger position of the stabilizing piece.

In addition, the number of the cantilever 29 and the guide groove 30 may be selected according to actual needs, for example, the number of the cantilever 29 and the guide groove 30 is one, respectively. Alternatively, the number of the cantilever 29 and the guide groove 30 may be plural, such as two, three, or four. For example, in some embodiments, referring to fig. 16, the number of cantilevers 29 and guide grooves 30 is two, respectively, and each is spaced apart in the radial direction, one cantilever 29 corresponding to one guide groove 30, wherein the distal end of the needle operating member 5 is between the two cantilevers 29 when the needle operating member 5 is in the needle firing position.

In addition, in some embodiments, referring to fig. 14, the pipe body 1 includes two half pipe portions 17 that can be spliced together, and each half pipe portion 17 has a clamping opening 25 and a driving opening 26 formed thereon. Thus, by the split of the two half-tube portions 17, the assembly of the needle operating member 5 and the driving member 6 can be facilitated.

In addition, in the tissue closure device, the suture thread may be located outside the tube body 1. The ends of the suture may be disposed in the needle thread hanging port 40 in a variety of ways. For example, in some embodiments, during routing, the needle may be pushed out slightly from the exit channel 2, then the two ends of the suture are hooked into place in the hook 40, and then the needle is retracted into the exit channel 2. When the suture is threaded, the suture needle moves to the threaded position after passing through the suture thread fixing portion 39 on the tissue and the stabilizer, and at this time, the suture thread is clamped and positioned at the suture thread fixing portion 39, so that when the suture needle is retracted, the suture thread remains on the suture thread fixing portion 39, and then the stabilizer moves to the retracted position and both ends of the suture thread are led out of the tissue to perform suturing.

Alternatively, in other embodiments, referring to fig. 30 to 35, in order to enhance the convenience of wiring, at each of the needle outlet passages 2, a wiring slit 31 communicating with the needle outlet passage 2 is formed on the tube body 1, wherein two wiring slits 31 are respectively used to accommodate at least two ends of a suture thread located outside the tube body 1; wherein, when the needle operating member 5 is in the needle initial position, the thread hanging port 40 and the thread hanging port 31 of the suture needle are at least partially communicated to enable the suture to enter the thread hanging port 40 via the thread hanging port 31, that is, the thread hanging port 31 is configured such that at least two ends of the suture entering into the thread hanging port 31 are respectively positioned in the two thread hanging ports 40, and the process of the suture entering into the thread hanging port 40 and the thread hanging port 31 is shown by three arrows in fig. 32. In this way, the suture is pre-arranged inside the tubular body 1 during the process of being placed on the thread-hanging port, so that the suture is not exposed, which is safer for the operator to operate, and in addition, it is possible to avoid contamination of the suture from the outside. In this way, the operator can directly arrange the two ends of the suture, for example about 3-5cm of the suture, in the wiring incision 31, respectively, where the two ends of the suture will be located in the hanging opening 40 of the suture needle, where, as described above, when penetrating the wiring, the suture needle is moved to the penetrating position after passing the suture through the suture fixing part 39 on the tissue and the stabilizer, where the suture will be clamped in place at the suture fixing part 39, such that, when the suture needle is retracted, the suture will remain on the suture fixing part 39, and then the stabilizer is moved to the gathering position and the two ends of the suture are led out of the tissue for suturing.

In some embodiments, to improve the reliability and smoothness of the wiring, the inner wall of the wiring incision 31 may have a plane, and the suture needle 3 may be abutted against the plane so that the thread hanging port 40 and the wiring incision 31 are at least partially communicated, so that the suture needle 3 may be prevented from twisting, and the thread hanging port 40 and the wiring incision 31 are dislocated, so that the suture thread cannot enter.

In addition, in order to enhance the stability and reliability of the wiring, referring to fig. 32 and 34, each of the wiring cutouts 31 includes an inlet section 32 and a clamping slit 33, wherein the size of the clamping slit 33 is smaller than that of the inlet section 32 so that the suture thread entered into the clamping slit 33 can be clamped in the clamping slit 33, wherein the clamping slit 33 is configured such that at least both ends of the suture thread clamped in the clamping slit 33 are respectively located in the two hanging wire openings 40 when the needle operating member 5 is in the needle initial position. In this way, the operator can directly introduce both ends of the suture, for example about 3-5cm of the suture, into the holding slit 33 through the inlet section 32 and be held by the holding slit 33, respectively, at which point both ends of the suture will be located in the suture hanging opening 40 of the suture needle, at which point, as described above, the suture needle is moved to the piercing position with the suture passing through the suture fixing portion 39 on the tissue and the stabilizer, at which point the suture will be held in place at the suture fixing portion 39, such that, when the suture needle is retracted, the suture will remain on the suture fixing portion 39, and then the stabilizer is moved to the gathering position and both ends of the suture are pulled out of the tissue for suturing.

In addition, in order to further enhance the convenience of wiring, referring to fig. 34, the size of the inlet section 32 is gradually reduced from outside to inside. In this way, the operator can more easily introduce both ends of the suture into the clamping slit 33 along the inlet end 32.

In addition, in some embodiments, referring to fig. 32 and 34, each of the routing slits 31 and its corresponding needle-out channel 2 are arranged to intersect, for example, the routing slits 31 are arranged at about the middle position of the needle-out channel 2. At this time, at one end position of each of the wiring slits 31, a thread escape slit 34 which communicates the outlet end of the needle outlet passage 2 with one end of the wiring slit 31 is formed in the tube body 1, and the thread escape slit 34 is used to allow a thread drawn out when the suture needle 3 is obliquely projected from the needle outlet passage 2 to escape from the needle outlet passage 2, and as shown by a single arrow in fig. 32, the thread can escape from the needle outlet passage 2 through the thread escape slit 34. Thus, during threading, the suture needle is moved to the threading position with the suture extending obliquely from the needle outlet passage 2 and passing through the suture fixing portion 39 on the tissue and the stabilizer, and at this time, the suture can be withdrawn from the suture withdrawal slit 34.

In addition, in some embodiments, the wire cuts 31 and the wire withdrawal cuts 34 may be formed directly on the self-side wall of the tube body 1. Alternatively, in other embodiments, referring to fig. 35, the needle outlet channel 2, the wire routing slit 31, and the withdrawal slit 34 may be formed on a single component, which may be mounted on the tube body 1. For example, a hollow is formed in the tube body 1, and an elastic block 35 is provided in the hollow, wherein the needle outlet passage 2, the wiring slit 31, and the thread withdrawal slit 34 are formed on the elastic block 35. The elastic block 35 may be a rubber block or a silicone block. In this way, the self-elasticity of the elastic block 35 can be utilized, so that the wiring cuts 31 (for example, the holding slits 33) can be positioned more easily at both ends of the suture.

In addition, in some embodiments, in order to promote the regularity of the suture thread on the outside of the pipe body 1, referring to fig. 30 to 35, a wiring structure for positioning the suture thread on the outside of the pipe body 1 is formed on the outer surface of the pipe body 1. Thus, by the wiring structure, the suture thread can be neatly arranged on the outer surface of the tube body 1, avoiding the suture thread from being tangled. Of course, during the piercing of the lead, the suture may become detached from the routing structure due to the pulling of the suture against the suture.

Of course, the wiring structure may have various ways, for example, in one way, the wiring structure includes one or more detachable crimping blocks 48 provided on the outer surface of the pipe body 1, in which case the crimping blocks 48 may crimp the suture thread on the outer surface of the pipe body 1. Alternatively, the wiring structure includes a wiring groove 36 formed on the outer surface of the tube body 1 extending toward the proximal end of the tube body 1, the wiring groove 36 being for accommodating a suture thread located outside the tube body 1. In this way, the suture thread on the outside of the tube body 1 can be located in the wiring groove 36 along the extending locus of the wiring groove 36.

The wiring slots 36 may be U-shaped, V-shaped, or other possible shapes.

In addition, in some embodiments, the wiring groove 36 may not be in communication with the two wiring cuts 31 of the tube body 1 that are in communication with the two needle outlet channels 2, such that a portion of the suture thread will protrude from the outer surface of the tube body 1. Alternatively, in other embodiments, referring to fig. 32, the wiring groove 36 communicates with two wiring slits 31 of the tube body 1 communicating with the two needle outlet passages 2, so that a portion of the suture thread between the two wiring slits 31 may be entirely located within the wiring groove 36.

In addition, in some embodiments, in the case that the tube body 1 is divided into two half tube portions 17 (for example, a first half tube portion and a second half tube portion), the suture needle 3, the needle operating member 5, the driving member 6 and the driving rod 19 of the tissue closing device may be disposed on one half tube portion 17 (the first half tube portion), and then the other half tube portion 17 (the second half tube portion) may be assembled on the one half tube portion 17, so that the suture needle 3, the needle operating member 5, the driving member 6 and the driving rod 19 may be disposed in the tube body 1 at one time, wherein the driving member 6 drives the distal stabilizing member 4 of the tissue closing device to be folded and unfolded by the driving rod 19, so that convenience in assembling the tissue closing device can be significantly improved.

Those skilled in the art will appreciate that the above-described embodiments are exemplary and not limiting. The different technical features presented in the different embodiments may be combined to advantage. Other variations to the disclosed embodiments can be understood and effected by those skilled in the art in view of the drawings, the description, and the claims. Any reference signs in the claims shall not be construed as limiting the scope. The presence of certain features in different dependent claims does not imply that these features cannot be combined to advantage.

Claims

1. A tissue closure device, comprising:

the pipe body (1), the pipe body (1) comprises two half pipe parts (17) which can be spliced together, a half suture needle channel groove (18) is formed on the splicing surface of each half pipe part (17), each suture needle channel groove (18) comprises a curve groove section (16), when the two half pipe parts (17) are combined to form the pipe body (1), the half suture needle channel groove (18) on one half pipe part (17) is spliced with the half suture needle channel groove (18) on the other half pipe part (17) to form a suture needle channel (14), wherein the curve groove sections (16) form curve channel sections of the suture needle channels (14), and each half pipe part (17) is provided with a needle outlet channel (2);

a suture needle (3), the suture needle (3) being located within the suture needle channel (14);

a needle operating member (5), the needle operating member (5) being provided on the tube body (1) and being movable between a needle initial position and a needle firing position;

the needle operation piece (5) can drive the suture needle (3) to obliquely extend out of the needle outlet channel (2) to a puncture position, and can allow the suture needle (3) to be retracted into the needle outlet channel (2).

2. The tissue closure device according to claim 1, wherein the mating surface of each half-tube portion (17) comprises a curved surface section, the curved groove section (16) being formed on the curved surface section and extending in a curved direction.

3. The tissue closure device according to claim 1, wherein a plurality of independent half suture needle channel grooves (18) are formed on the split surface of each half tube portion (17), and when two half tube portions (17) are combined to form the tube body (1), the plurality of half suture needle channel grooves (18) on one half tube portion (17) and the plurality of half suture needle channel grooves (18) on the other half tube portion (17) are respectively split to form a plurality of suture needle channels (14), wherein a plurality of suture needles (3) are respectively positioned in the suture needle channels (14), and the needle operating member (5) can drive a plurality of suture needles (3) to simultaneously extend from the needle outlet channel (2) to a puncture position in an inclined manner, and can allow a plurality of suture needles (3) to be simultaneously retracted into the respective needle outlet channel (2).

4. The tissue closure device according to claim 1, wherein each of the needle channel grooves (18) comprises a linear groove segment (15), the linear groove segments (15) being pieced together to form a linear channel segment of the needle channel (14).

5. The tissue closure device according to claim 1, characterized in that one end of the curved channel section serves as the needle outlet channel (2).

6. The tissue closure device according to claim 1, wherein the needle operating member (5) is arranged at a proximal position of the tube body (1), and the manual operating portion (8) of the needle operating member (5) protrudes from a proximal port of the tube body (1).

7. The tissue closure device according to claim 1, characterized in that the needle operating member (5) is movable along the axial direction of the tube body (1) between the needle initial position and the needle firing position.

8. The tissue closure device according to claim 7, characterized in that a movement guiding structure is provided between the needle operating member (5) and the tube body (1).

9. The tissue closure device according to claim 8, wherein the movement guiding structure comprises an axially extending guiding groove (9) on the outer surface of the needle operating member (5) and two half guiding protrusions (10) on the half tube portion (17), the two half guiding protrusions (10) being split together and fitted in the guiding groove (9).

10. The tissue closure device according to claim 7, wherein a plurality of the suturing needles (3) and the needle operating member (5) are directly connected.

11. The tissue closure device according to claim 10, wherein a plurality of spaced needle insertion holes (11) are formed in a distal end face of the needle manipulation member (5), the plurality of needle insertion holes (11) extending toward a proximal end of the needle manipulation member (5), a radial hole (12) communicating with the plurality of needle insertion holes (11) is formed in the needle manipulation member (5), and a locking pin (13) is inserted into the radial hole (12), wherein one ends of the plurality of suture needles (3) are respectively inserted into the respective needle insertion holes (11) while simultaneously being in locking engagement with the locking pin (13).

12. The tissue closure device according to claim 1, characterized in that after the suture needle (3), the needle operating member (5), the driving member (6) and the driving rod (19) of the tissue closure device are arranged on one of the half-tube portions (17), the other half-tube portion (17) is spliced on one of the half-tube portions (17) to arrange the suture needle (3), the needle operating member (5), the driving member (6) and the driving rod (19) in the tube body (1), wherein the driving member (6) drives the distal stabilizing member (4) of the tissue closure device to be folded and unfolded by the driving rod (19).

13. The tissue closure device of claim 1, further comprising a driver (6), the driver (6) being disposed in the tube (1) and the driver (6) being movable between a stabilizer initial position that urges the stabilizers (4) distal of the tissue closure device to retract and a deployed stabilizer firing position.

14. The tissue closure device according to claim 13, wherein the needle operator (5) in the needle initial position allows the driver (6) to switch between the stabilizer initial position and the stabilizer firing position;

the needle operating member (5) blocks the return of the driving member (6) from the stabilizer firing position to the stabilizer initial position when in the needle firing position.

15. The tissue closure device according to claim 13 or 14, wherein the drive member (6) is movable along the axial direction of the tube body (1) between the stabilizer initial position and the stabilizer firing position.

16. The tissue closure device according to claim 15, wherein the driver (6) has an axial passage formed therein, the suturing needle (3) passing through its corresponding axial passage.

17. The tissue closure device according to claim 15, further comprising a drive rod (19) within the tube (1), the proximal end of the drive rod (19) being directly connected to the driver (6), the distal end of the drive rod (19) extending from the distal end of the tube (1) to connect the stabilizer (4).

18. The tissue closure device according to claim 17, characterized in that an axially extending central bore (20) is formed in the distal end face of the driver (6), that a radial channel (21) is formed in the driver (6) communicating with the central bore (20), that a locking shaft (22) is provided in the radial channel (21), wherein the proximal end of the driver rod (19) is inserted in the central bore (20) and is in locking engagement with the locking shaft (22).

19. The tissue closure device according to claim 17, wherein a half drive rod channel groove (23) is formed in each half tube portion (17), and when two half tube portions (17) are combined to form the tube body (1), the half drive rod channel groove (23) in one half tube portion (17) and the half drive rod channel groove (23) in the other half tube portion (17) are combined to form a drive rod receiving channel (24), and the drive rod (19) is axially movably disposed in the drive rod receiving channel (24).

20. The tissue closure device according to claim 15, wherein each half-tube portion (17) has formed thereon an axially spaced snap-fit opening (25) and a drive opening (26), wherein the driver (6) comprises an axially spaced snap-fit (27) and a drive portion (28), wherein the drive portion (28) is located within the drive opening (26);

Wherein, when the buckle (27) is clamped in the clamping opening (25), the driving piece (6) is positioned at the initial position of the stabilizing piece;

when the buckle (27) is clamped in the driving opening (26), the driving piece (6) is positioned at the firing position of the stabilizing piece.

21. The tissue closure device of claim 21, wherein the needle operator (5) blocks the catch (27) from backing out of the drive opening (26) in the needle firing position to block the drive member (6) from returning from the stabilizer firing position to the stabilizer initial position.

22. The tissue closure device according to claim 21, wherein the driver (6) comprises a cantilever (29), the catch (27) and the driver (28) are arranged on the cantilever (29), and the catch (27) is located at a proximal end of the cantilever (29).

23. The tissue closure device according to claim 22, wherein the needle operating member (5) is formed with an axially extending groove (30),

wherein the cantilever (29) is located outside the recess (30) when the needle operating member (5) is axially moved to the needle initial position;

wherein the cantilever (29) slides into the recess (30) when the needle operating member (5) is axially moved to the needle firing position.