Gear drive for suture release

Abstract

According to the gear driving device for releasing the suturing piece, after the gear driving device for releasing the suturing piece stretches into the human body, lesion mucous membrane tissue is sucked or pulled into the device, and the lesion mucous membrane tissue penetrates through the suturing piece; then a control line is operated to control a gear to rotate, the gear is matched with meshing teeth to drive a transmission piece to move, the transmission piece drives extrusion bases to move so as to change the distance between the two extrusion bases, and in the process, the two extrusion bases jointly extrude a suture piece, so that the suture piece is fixed to the root of the lesion mucous membrane tissue, and the lesion mucous membrane tissue is sutured; in the suturing process, a gear transmission mode is adopted to drive at least one extrusion seat to slide relative to the base in the first linear direction or the second linear direction, so that the suturing piece can be stably and accurately driven to be released under the condition of a small-size structure, the diseased mucous membrane tissue is accurately sutured by the suturing piece, and the suturing efficiency is improved. And the sewing precision of products is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope minimally invasive surgery's medical instrument technical field, especially relate to a kind of gear driving device of suture release. BACKGROUND

[0002] More and more endoscopic minimally invasive surgical instruments are developed to solve more and more gastrointestinal diseases, such as mucosal tissue defect / wound suture, gastroesophageal reflux disease fundus plication, gastric volume reduction for obesity, high sugar and high fat diseases, early tumor and submucosal tumor removal, etc. These minimally invasive surgical methods involve the key technology of suturing. How to effectively implement suturing is a problem worth exploring. These minimally invasive instruments are usually small in size to adapt to operation in narrow lumens such as the digestive tract, and at the same time, high stability and precision are required for the suturing of the instruments in limited operating space. SUMMARY

[0003] To achieve the above purpose, the utility model provides a kind of gear driving device of suture release, it includes: base, the through hole being formed in the base, the through hole is configured to cooperate with endoscope;Two extrusion seats, two the extrusion seat is set on the base, and interval is provided between two the extrusion seat, at least one the extrusion seat can be slid relative to the base along the first straight line direction or the second straight line direction, the first straight line direction and the second straight line direction are two opposite directions;Suture, the suture is set in the interval, and can be extruded and locked by two the extrusion seat, to suture pathological mucosa;Transmission member, the transmission member is set on the base, and can be moved relative to the base, the transmission member is provided with meshing teeth, a the transmission member is connected with a the extrusion seat, to drive the extrusion seat relative to the base moves;Gear, the gear is set on the base, and can be rotated relative to the base, the gear is engaged with the meshing teeth, the gear is provided with annular groove;And control line, the control line is coiled in the annular groove, and the gear can be controlled relative to the base rotates along the first rotation direction or the second rotation direction.

[0004] The gear driving device of suture release as described above, wherein the transmission member is a transmission plate, the transmission member is provided with a guide rail, the base is provided with a guide groove matched with the guide rail, and the transmission member can slide relative to the base along the first straight line direction or the second straight line direction.

[0005] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the base is provided with a first limiting structure, and the pressing seat is provided with a second limiting structure matched with the first limiting structure; or the base is provided with a first limiting structure, and the transmission plate is provided with a second limiting structure matched with the first limiting structure.

[0006] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein one of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block.

[0007] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the transmission member is a rotating rod, the rotating rod is rotatably installed on the base, the rotating rod is provided with external threads, and the pressing seat is provided with internal threads matched with the external threads.

[0008] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the pressing seat is provided with a connecting hole, the end of the rotating rod is connected with the base through the connecting hole, part of the external threads is located in the connecting hole, and the internal threads are provided on the hole wall of the connecting hole.

[0009] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the two pressing seats are slidably installed on the base, the two ends of the rotating rod are provided with the external threads, the rotation directions of the two external threads are opposite, and the internal threads of the two pressing seats are respectively matched with the two external threads.

[0010] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the number of the rotating rods is two, and the two rotating rods are symmetrically arranged on the base.

[0011] The suture releasing gear drive device as claimed in any one of the preceding claims, wherein the suture releasing gear drive device further comprises a treatment coil arranged in the through hole, the treatment coil is configured to be able to be ligation on the lesion mucosa tissue, a push-pull member, one end of the push-pull member is connected with the treatment coil, and the other end of the push-pull member penetrates out of the base, and a push tube, the push tube is sleeved on the push-pull member, and the push-pull member extends out of the push tube.

[0012] The gear driving device for releasing the suture member as described above, wherein the pressing seat is provided with a mounting hole penetrating through the same along a first straight direction, and a push pin member is arranged on the hole wall of the mounting hole; the suture member comprises a fixed frame, a part of the fixed frame is located in the mounting hole and can slide relative to the pressing seat, another part of the fixed frame is located in the interval, the fixed frame is provided with a needle outlet, and the arrangement position of the push pin member corresponds to the position of the needle outlet; a first elastic member is arranged between the fixed frame and the pressing seat; and a suture needle is arranged on the fixed frame and located between the needle outlet and the push pin member, the suture needle comprises a mounting portion and a puncture portion arranged on the mounting portion, and the puncture portion can be deformed by the pressing seat.

[0013] The gear driving device for releasing the suture member as described above, wherein the number of the suture needles is multiple, and the suture needles are arranged in a stacked manner to form a suture needle group; the suture member further comprises a needle box arranged on the fixed frame, the needle box has an open-ended accommodating cavity, the arrangement position of the needle box corresponds to the position of the mounting hole, the suture needle group is arranged in the accommodating cavity, and the suture needle farthest from the bottom wall of the accommodating cavity among the multiple suture needles is located between the needle outlet and the push pin member, the bottom wall of the accommodating cavity refers to the cavity wall opposite to the opening; and a second elastic member is supported between the suture needle group and the bottom wall.

[0014] The gear driving device for releasing the suture member as described above, wherein the suture member comprises two oppositely arranged suture portions, one or both of the suture portions is provided with a puncture portion, and the two suture portions are respectively provided with clamping structures capable of being clamped with each other.

[0015] The gear driving device for releasing the suture member as described above, wherein the suture member comprises a connecting plate and a puncture portion, the leading end and the trailing end of the connecting plate are oppositely arranged, the connecting plate as a whole has a “C” shape, the leading end and the trailing end of the connecting plate are respectively provided with clamping structures capable of being clamped with each other, the connecting plate can be deformed by the pressing seat and clamped with each other, and the puncture portion is arranged on each of the two symmetrical surfaces of the connecting plate.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] After the gear drive device of the suture releasing device extends into the human body, the diseased mucosa tissue is sucked into or pulled into the device, so that the diseased mucosa tissue passes through the suture; then the control wire is operated to control the rotation of the gear, the gear drives the transmission member to move through the cooperation with the meshing teeth, the transmission member drives the extrusion seat to move, so as to change the distance between the two extrusion seats, in the process, the two extrusion seats extrude the suture together, so that the suture is fixed on the root of the diseased mucosa tissue, so as to suture the diseased mucosa tissue; in the above suture process, the gear transmission mode is adopted to drive at least one extrusion seat to slide relative to the base along the first linear direction or the second linear direction, so as to ensure that the suture releasing device can be stably and accurately driven under the structure of small size, so that the suture accurately sutures the diseased mucosa tissue, and the suture precision of the product is ensured; in addition, the gear transmission system has accurate transmission, high efficiency, compact structure and reliable work. BRIEF DESCRIPTION OF DRAWINGS

[0018] The following drawings only aim to schematically illustrate and explain the present application, and do not limit the scope of the present application. Among them:

[0019] Figure 1 is a structural schematic view of the first embodiment of the gear drive device of the suture releasing device;

[0020] Figure 2 is Figure 1 is an exploded structural schematic view of the gear drive device of the suture releasing device;

[0021] Figure 3 is Figure 1 is a partial sectional structural schematic view of the gear drive device of the suture releasing device;

[0022] Figure 4 is Figure 3 is an enlarged structural schematic view of part A in the present application;

[0023] Figure 5 is a partial sectional structural schematic view of the second embodiment of the gear drive device of the suture releasing device;

[0024] Figure 6 is Figure 5 is an enlarged structural schematic view of part B in the present application;

[0025] Figure 7 is Figure 5 is a partial sectional structural schematic view of another state of the gear drive device of the suture releasing device;

[0026] Figure 8 is Figure 5 is a structural schematic view of the suture;

[0027] Figure 9 is Figure 8 is a structural schematic view of the suture release gear drive in another state of rotation;

[0028] Figure 10 is a structural schematic view of a third embodiment of the suture release gear drive of the present utility model;

[0029] Figure 11 is Figure 10 is an exploded structural schematic view of the suture release gear drive shown;

[0030] Figure 12 is Figure 10 is a partial cross-sectional structural schematic view of the suture release gear drive shown;

[0031] Figure 13 is a partial cross-sectional structural schematic view of a fourth embodiment of the suture release gear drive of the present utility model;

[0032] Figure 14 is a structural schematic view of a fifth embodiment of the suture release gear drive of the present utility model;

[0033] Figure 15 is a structural schematic view of a sixth embodiment of the suture release gear drive of the present utility model;

[0034] Figure 16 is Figure 15 is an exploded structural schematic view of the suture release gear drive shown;

[0035] Figure 17 is Figure 15 is a partial cross-sectional structural schematic view of the suture release gear drive shown;

[0036] Figure 18 is a structural schematic view of a seventh embodiment of the suture release gear drive of the present utility model;

[0037] Figure 19 is Figure 18 is an exploded structural schematic view of the suture release gear drive shown;

[0038] Figure 20 is Figure 18 is a side structural schematic view of the suture release gear drive shown;

[0039] Figure 21 is Figure 20 is a partial cross-sectional structural schematic view of the suture release gear drive shown;

[0040] Figure 22 isFigure 18 Fig. 6 is a structural schematic view of a suture releasing gear drive device shown in Fig. 5;

[0041] Figure 23 Fig. 7 is a structural schematic view of a suture shown in Fig. 6; Figure 22 Fig. 8 is a partial sectional structural schematic view of a suture releasing gear drive device shown in Fig. 7;

[0042] Figure 24 Fig. 9 is a structural schematic view of a suture shown in Fig. 8; Figure 19 Fig. 10 is a structural schematic view of a suture shown in Fig. 9;

[0043] Figure 25 Fig. 11 is a partial sectional structural schematic view of a suture shown in Fig. 10; Figure 24 Fig. 12 is a structural schematic view of a suture shown in Fig. 11;

[0044] Figure 26 Fig. 13 is an exploded structural schematic view of a suture shown in Fig. 12; Figure 24 Fig. 14 is a structural schematic view of a suture shown in Fig. 13;

[0045] Figure 27 Fig. 15 is a structural schematic view of another suture;

[0046] Figure 28 Fig. 16 is a structural schematic view of a suture shown in Fig. 15 in another state; Figure 27 Fig. 17 is a structural schematic view of a suture shown in Fig. 16 in another state;

[0047] Figure 29 Fig. 18 is a structural schematic view of an eighth embodiment of a suture releasing gear drive device shown in Fig. 6;

[0048] Figure 30 Fig. 19 is a partial structural schematic view of a suture releasing gear drive device shown in Fig. 18; Figure 29 Fig. 20 is a structural schematic view of a ninth embodiment of a suture releasing gear drive device shown in Fig. 6;

[0049] Figure 31 Fig. 21 is a partial structural schematic view of a suture releasing gear drive device shown in Fig. 20;

[0050] Figure 32 Fig. 22 is a structural schematic view of a tenth embodiment of a suture releasing gear drive device shown in Fig. 6; Figure 31 Fig. 23 is a partial structural schematic view of a suture releasing gear drive device shown in Fig. 22.

[0051] BRIEF DESCRIPTION OF THE DRAWINGS

[0052] 10, base; 11, through hole; 12, guide groove; 13, first limiting structure;

[0053] 20, extrusion seat; 21, internal thread; 22, connecting hole; 23, mounting hole; 24, needle pushing member;

[0054] 30, suture member; 31, fixing frame; 32, needle outlet; 33, first elastic member; 34, suture nail; 341, mounting portion; 35, needle box; 36, second elastic member; 37, suture portion; 38, puncture portion; 39, clamping structure; 301, connecting plate;

[0055] 40, transmission member; 41, engaging tooth; 42, rotating rod; 421, external thread; 43, transmission plate; 431, guide rail;

[0056] 50, gear;

[0057] 60, control line;

[0058] 71, treatment coil; 72, push-pull member; 73, push tube;

[0059] 80, second limiting structure;

[0060] 90, frame body;

[0061] 100, endoscope. DETAILED DESCRIPTION

[0062] The utility model will be further explained in detail below through the drawings and embodiments. Through these explanations, the characteristics and advantages of the utility model will become more clear and explicit.

[0063] The special word "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here is not necessarily to be construed as superior or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0064] In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict. The following discussion provides multiple embodiments of the utility model. Although each embodiment represents a single combination of the application, different embodiments of the utility model can be replaced or combined, so the utility model can also be considered to include all possible combinations of the same and / or different embodiments described. Therefore, if one embodiment includes A, B and C, and another embodiment includes the combination of B and D, the utility model should also be considered to include an embodiment containing one or more all other possible combinations of A, B, C and D, although this embodiment may not be explicitly described in the following content. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0065] As Figures 1 to 32The gear driving device for releasing the suturing piece comprises a base 10, two extrusion seats 20, a suturing piece 30, a transmission piece 40, a gear 50 and a control wire 60.

[0066] The base 10 is provided with a through hole 11 penetrating through the base 10, and the through hole 11 is configured to cooperate with an endoscope 100.

[0067] The two extrusion seats 20 are arranged on the base 10, and a space is arranged between the two extrusion seats 20, at least one extrusion seat 20 can slide relative to the base 10 along a first linear direction or a second linear direction, and the first linear direction and the second linear direction are two opposite directions.

[0068] The suturing piece 30 is arranged in the space and can be extruded and locked by the two extrusion seats 20 to suture the diseased mucosa tissue.

[0069] The transmission piece 40 is arranged on the base 10 and can move relative to the base 10, the transmission piece 40 is provided with a meshing tooth 41, one transmission piece 40 is connected with one extrusion seat 20 to drive the extrusion seat 20 to move relative to the base 10.

[0070] The gear 50 is arranged on the base 10 and can rotate relative to the base 10, the gear 50 is engaged with the meshing tooth 41, and the gear 50 is provided with an annular groove.

[0071] The control wire 60 is wound in the annular groove and can control the gear 50 to rotate relative to the base 10 along a first rotation direction or a second rotation direction.

[0072] The gear driving device for releasing the suturing piece provided by the utility model adopts the transmission mode of the gear 50 to drive at least one extrusion seat to slide relative to the base 10 along a first linear direction or a second linear direction in the process of suturing the diseased mucosa tissue, so that the suturing piece 30 can be stably and accurately driven to release under the structure of small size, and the suturing piece 30 can be accurately sutured to the diseased mucosa tissue, and the suturing precision of the product is ensured.

[0073] In addition, the transmission mode between the gear 50 and the transmission member 40, on the one hand, the transmission efficiency of the gear 50 can generally reach more than 95%, the transmission efficiency is high; on the other hand, the transmission ratio of the gear 50 is very accurate, and the accurate motion control of the extrusion seat 20 can be realized; in addition, the structure of the gear 50 is compact, and the occupied space is small, so that the larger transmission power can be realized in the limited space; in addition, the reliability of the gear 50 is high, and the fault is not easy to appear under the normal use condition.

[0074] The specific operation of the suture releasing gear drive device is as follows:

[0075] In the first step, the suture 30 is placed in the interval between the two extrusion seats 20, and the suture 30 is matched with the two extrusion seats 20 respectively.

[0076] In the second step, the suture releasing gear drive device is sleeved on the front end of the endoscope 100, and then the suture releasing gear drive device enters the human body together with the endoscope 100 into the operation site in the human body.

[0077] In the third step, the front end of the suture releasing gear drive device is aligned with the lesion tissue of the human body, the lesion tissue is sucked into the through hole 11 of the base 10 through the negative pressure suction channel, or the lesion tissue is clamped into the through hole 11 of the base 10 through the existing technology such as an endoscope clamp or an endoscope forceps, and the lesion mucosa tissue passes through the suture 30, then the control wire 60 is operated to control the rotation of the gear 50, the gear 50 drives the transmission member 40 to move through the cooperation with the meshing teeth 41, the transmission member 40 drives the extrusion seat 20 to move, so as to change the distance between the two extrusion seats 20, in the process, the two extrusion seats 20 extrude the suture 30 together, so that the suture 30 is fixed on the root of the lesion mucosa tissue, so as to suture the lesion mucosa tissue.

[0078] As shown in the drawings, Figures 15 to 17 In an embodiment of the utility model, the suture releasing gear drive device further comprises a treatment coil 71, a push-pull member 72 and a push tube 73.

[0079] The treatment coil 71 is arranged in the through hole 11, and the treatment coil 71 is configured to be able to be laced on the lesion mucosa tissue.

[0080] One end of the push-pull member 72 is connected with the treatment coil 71, and the other end of the push-pull member 72 penetrates out of the base 10.

[0081] The push tube 73 is sleeved on the push-pull member 72, and the push-pull member 72 extends out of the push tube 73.

[0082] After the gear drive device for releasing the suture member extends into the human body, the diseased mucosa tissue is sucked into or pulled into the device, and the diseased mucosa tissue passes through the suture member 30 and the treatment coil 71 in turn. Then the control wire 60 is operated to control the rotation of the gear 50, the gear 50 drives the transmission member 40 to move through cooperation with the meshing teeth 41, the transmission member 40 drives the extrusion seat 20 to move, so as to change the distance between the two extrusion seats 20, and in the process, the two extrusion seats 20 extrude the suture member 30 together, so that the suture member 30 is fixed on the root of the diseased mucosa tissue. Then the treatment coil 71 is used to cut the diseased mucosa tissue. In the operation, the suture member 30 tightly laces the root of the diseased mucosa tissue, so that the treatment coil 71 can cut the diseased mucosa tissue, and the suture member 30 can tightly suture the wound surface generated by cutting the diseased mucosa tissue, thereby reducing the postoperative complications. In addition, the gear drive device for releasing the suture member can realize cutting of the diseased mucosa tissue and suture of the wound surface after cutting at the same time, that is, one device can realize cutting and suture operations, on the one hand, the number of tools used in the operation is reduced, and the operation difficulty of cutting the diseased tissue is reduced. On the other hand, the operation is simple, so that the use comfort and efficiency of the product are improved. The treatment coil 71, the push-pull member 72 and the push tube 73 are also suitable for use in other embodiments of the technology, which will not be listed one by one.

[0083] The following will be described in detail with reference to the drawings

[0084] Embodiment one

[0085] As Figures 1 to 4 shown, the gear drive device for releasing the suture member provided by the utility model comprises a base 10, two extrusion seats 20, a suture member 30, a transmission member 40, a gear 50 and a control wire 60.

[0086] The transmission member 40 is a rotary rod 42, and the rotary rod 42 is rotatably installed on the base 10. In one embodiment of the rotatable installation mode, a frame 90 is fixedly installed on the base 10, and the rotary rod 42 is rotatably installed on the frame 90.

[0087] The rotary rod 42 is provided with an external thread 421, and the extrusion seat 20 is provided with an internal thread 21 matched with the external thread 421.

[0088] After the gear drive device of the suture releasing device extends into the human body, the diseased mucosa tissue is sucked into or pulled into the device, and the diseased mucosa tissue passes through the suture 30 and the treatment coil 71 in turn. Then the operation control line 60 controls the rotation of the gear 50, the gear 50 drives the rotation rod 42 to rotate through the cooperation with the meshing teeth 41, the extrusion seat 20 moves through the cooperation of the external thread 421 and the internal thread 21, so as to change the distance between the two extrusion seats 20, and in the process, the two extrusion seats 20 jointly extrude the suture 30, so that the suture 30 is fixed on the root of the diseased mucosa tissue. Then the diseased mucosa tissue is cut off through the treatment coil 71.

[0089] In addition, the rotation rod 42 and the extrusion seat 20 are in screw transmission, on the one hand, the structure of the screw transmission is relatively simple; on the other hand, the screw transmission can realize high-precision transmission, and the transmission error is small; on the other hand, the transmission of the screw transmission is stable; and on the other hand, the transmission efficiency of the screw transmission is relatively high, and is usually above 80%.

[0090] As shown in the drawings, Figures 1 to 4 In an embodiment of the utility model, the extrusion seat 20 is provided with a connecting hole 22, the end of the rotation rod 42 passes through the connecting hole 22 and is connected with the base 10, part of the external thread 421 is located in the connecting hole 22, and the hole wall of the connecting hole 22 is provided with the internal thread 21.

[0091] The above structure makes the connection between the rotation rod 42 and the extrusion seat 20 be shaft hole connection, on the one hand, the shaft hole connection can transmit larger power; on the other hand, the shaft hole connection can realize higher precision, and the cooperation precision between the rotation rod 42 and the extrusion seat 20 is guaranteed; and on the other hand, the reliability of the shaft hole connection is high, and the connection between the rotation rod 42 and the extrusion seat 20 is firm and reliable.

[0092] As shown in the drawings, Figures 5 to 7 In an embodiment of the utility model, the two extrusion seats 20 are slidably installed on the base 10, the two ends of the rotation rod 42 are provided with the external thread 421, the rotation directions of the two external threads 421 are opposite, and the internal threads 21 of the two extrusion seats 20 are matched with the two external threads 421 respectively.

[0093] The two extrusion seats 20 move relative to the base 10, and the two extrusion seats 20 move a relatively short distance respectively, so that the diseased mucosa tissue can be clamped, and therefore the clamping speed of the extrusion seat 20 on the diseased mucosa tissue and the extrusion suture efficiency are improved.

[0094] In addition, the sliding of the two extrusion seats 20 relative to the base 10 is controlled by one rotation rod 42, and the components for driving the extrusion seat 20 to move are less.

[0095] As shown in the drawings, Figures 10 to 13As shown in the embodiment of the utility model, the number of the rotating rods 42 is two, and the two rotating rods 42 are symmetrically arranged on the base 10.

[0096] On the one hand, the arrangement of the two rotating rods 42 improves the sliding smoothness and stability of the extrusion seats 20, and avoids the lateral deviation of the extrusion seats 20 from causing the jamming. This improves the reliability of the system. On the other hand, the two rotating rods 42 can simultaneously control the rotating rods 42, so that more precise control can be achieved, and the control accuracy of the system is improved.

[0097] As shown in the embodiment of the utility model, Figures 10 to 12 two rotating rods 42 can be connected with two extrusion seats 20 respectively. Specifically, one end of one rotating rod 42 is provided with an external thread 421, and is connected with one extrusion seat 20; one end of the other rotating rod 42 is provided with an external thread 421, and is connected with the other extrusion seat 20, so that the two rotating rods 42 drive the extrusion seats 20 to slide relative to the base 10 respectively.

[0098] Alternatively, as shown in the embodiment of the utility model, Figure 13 two rotating rods 42 are connected with two extrusion seats 20 respectively. Specifically, two ends of one rotating rod 42 are provided with external threads 421 respectively, and the one rotating rod 42 is connected with two extrusion seats 20 respectively; two ends of the other rotating rod 42 are provided with external threads 421 respectively, and the other rotating rod 42 is connected with two extrusion seats 20 respectively, so that the two rotating rods 42 simultaneously control the two extrusion seats 20 to slide relative to the base 10. The above structure realizes the simultaneous control of the two rotating rods 42 on the two extrusion seats 20.

[0099] Alternatively, as shown in the embodiment of the utility model, Figure 14 two rotating rods 42 are connected with one extrusion seat 20 respectively; the other extrusion seat is fixedly connected with the base 10. Specifically, one end of one rotating rod 42 is provided with an external thread 421, and one end of the other rotating rod 42 is provided with an external thread 421. The external threads 421 are located on the same side of the two rotating rods 42, so that the two rotating rods 42 simultaneously control one extrusion seat 20 to slide relative to the base 10.

[0100] Embodiment two

[0101] As shown in the embodiment of the utility model, Figures 18 to 23 the gear driving device for releasing the suturing member provided by the utility model comprises a base 10, two extrusion seats 20, a suturing member 30, a transmission member 40, a gear 50 and a control line 60.

[0102] The transmission member 40 is a transmission plate 43, the transmission member 40 is provided with a guide rail 431, the base 10 is provided with a guide groove 12 matched with the guide rail 431, and the transmission member 40 can slide relative to the base 10 along a first straight line direction or a second straight line direction.

[0103] After the gear drive device for releasing the suture member extends into the human body, the diseased mucosa tissue is sucked into or pulled into the device, so that the diseased mucosa tissue passes through the suture member 30 or passes through the suture member 30 and the therapeutic coil 71 in turn. Then, the control line 60 is operated to control the rotation of the gear 50, the gear 50 drives the transmission plate 43 to move through the cooperation with the meshing teeth 41, the transmission plate 43 drives the extrusion seat 20 to move, so as to change the distance between the two extrusion seats 20. In this process, the two extrusion seats 20 jointly extrude the suture member 30, so that the suture member 30 is fixed on the root of the diseased mucosa tissue to suture the mucosa defect / wound, or further, the diseased mucosa tissue is resected through the therapeutic coil 71.

[0104] The transmission plate 43 is similar to the gear rack of the gear 50 in the transmission mode. The manufacturing precision of the gear and the gear rack can be very high, so as to ensure the accuracy of the transmission; the reliability of the gear and the gear rack transmission is high because the meshing between the gear and the gear rack is relatively tight, so as to ensure the transmission effect; the structure of the gear and the gear rack is relatively simple, the manufacturing process is mature, and the technology is easy to be popularized.

[0105] As shown in Figure 29 and Figure 30 , in an embodiment of the utility model, the first limiting structure 13 is arranged on the base 10, and the second limiting structure 80 that cooperates with the first limiting structure 13 is arranged on the transmission plate 43. Specifically, one of the first limiting structure 13 and the second limiting structure 80 is a limiting groove, and the other is a limiting block. The above is only one embodiment of the first limiting structure 13 and the second limiting structure 80, and those skilled in the art should understand that any structure that can limit the extrusion seat 20 can be used except the above embodiment, which is not listed here.

[0106] The configuration of the first limiting structure 13 and the second limiting structure 80 can limit the sliding stroke of the extrusion seat 20 according to actual needs, so as to avoid the disengagement and jamming of the meshing teeth on the transmission plate 43 and the gear 50 caused by the too large sliding stroke, which ensures the accuracy and reliability of the transmission.

[0107] As shown in Figure 31 and Figure 32 , in another embodiment of the utility model, the first limiting structure 13 is arranged on the base 10, and the second limiting structure 80 that cooperates with the first limiting structure 13 is arranged on the extrusion seat 20. Specifically, one of the first limiting structure 13 and the second limiting structure 80 is a limiting groove, and the other is a limiting block. The above is only one embodiment of the first limiting structure 13 and the second limiting structure 80, and those skilled in the art should understand that any structure that can limit the extrusion seat 20 can be used except the above embodiment, which is not listed here.

[0108] The configuration of the first limiting structure 13 and the second limiting structure 80 can limit the sliding stroke of the extrusion seat 20 according to actual requirements, so as to avoid the disengagement and jamming of the meshing teeth on the transmission plate 43 and the gear 50 due to too large sliding stroke, which ensures the accuracy and reliability of transmission.

[0109] Several embodiments of the suture are described in detail below with reference to the accompanying drawings.

[0110] Embodiment I

[0111] As shown in Figure 8 and Figure 9 , the suture 30 includes two oppositely arranged suture parts 37, one or both of which is provided with a puncture part 38, and the two suture parts 37 are respectively provided with clamping structures 39 capable of clamping each other. The two extrusion seats 20 jointly extrude the suture 30 to cause the relative movement of the two suture parts 37, and the distance between the two suture parts 37 gradually decreases until the two suture parts 37 are clamped together, so as to tighten the suture 30 on the diseased mucosa tissue, thereby ensuring effective treatment of the diseased mucosa tissue. The structure of the suture 30 is simple and easy to process.

[0112] Embodiment II

[0113] As shown in Figure 19 , the extrusion seat 20 is provided with a mounting hole 23 penetrating the extrusion seat 20 along a first straight line direction, and the mounting hole 23 is provided with a push pin 24 on the hole wall.

[0114] As shown in Figures 23 to 26 , the suture 30 includes a fixed frame 31, a first elastic member 33, and a suture needle 34.

[0115] Part of the fixed frame 31 is located in the mounting hole 23 and can slide relative to the extrusion seat 20, and the other part of the fixed frame 31 is located in the interval, the fixed frame 31 is provided with a needle outlet 32, and the position of the push pin 24 corresponds to the position of the needle outlet 32.

[0116] The suture needle 34 is arranged on the fixed frame 31 and located between the needle outlet 32 and the push pin 24, and the suture needle 34 includes a mounting part 341 and a puncture part 38 arranged on the mounting part 341, and the puncture part 38 can be deformed by the extrusion seat 20.

[0117] The first elastic member 33 is arranged between the fixed frame 31 and the extrusion seat 20. In the process of pushing the suture needle 34 out of the fixed frame 31, the first elastic member 33 is gradually compressed; after the suture needle 34 is completely pushed out and sutured, the fixed frame 31 returns to the initial state position under the reaction force of the first elastic member 33.

[0118] After the diseased mucosa tissue is sucked or pulled into the device, the fixing frame 31 is pressed against the diseased mucosa tissue, then the control sliding of the pressing seat 20 relative to the base 10, the pressing seat 20 pushes the suture needle 34 out of the fixing frame 31 from the needle outlet 32, the puncture part 38 penetrates the diseased mucosa tissue, the puncture part 38 is abutted against another pressing seat 20, then the pressing seat 20 continuously pushes the suture needle 34, so that the puncture part 38 is bent and abutted against the diseased mucosa tissue, thereby the suture member 30 tightens the diseased mucosa tissue, so that the diseased mucosa tissue is effectively treated. The suture member 30 has simple structure and is easy to process.

[0119] As shown in Figure 26 the embodiment of the utility model, the number of suture needles 34 is multiple, the multiple suture needles 34 are stacked and arranged to form a suture needle group.

[0120] The suture member 30 further comprises a needle box 35 and a second elastic member 36.

[0121] The needle box 35 is arranged on the fixing frame 31, the needle box 35 has an open-ended accommodating cavity, the arrangement position of the needle box 35 corresponds to the position of the mounting hole 23, the suture needle group is arranged in the accommodating cavity, the suture needle 34 farthest from the bottom wall of the accommodating cavity among the multiple suture needles 34 is located between the needle outlet 32 and the needle pushing member 24, and the bottom wall of the accommodating cavity refers to the cavity wall oppositely arranged with the opening.

[0122] The second elastic member 36 is supported between the suture needle group and the bottom wall.

[0123] The operation process of one suture needle 34 being pushed out of the needle box 35 is basically same as above. After one suture needle 34 is sutured on the diseased mucosa tissue, the distance between the two pressing seats 20 is increased, at this time, the needle pushing member 24 exits the needle box 35, and the fixing frame 31 and the needle box 35 are gradually restored under the reaction force of the first elastic member 33. After the needle pushing member 24 completely exits the needle box 35, the next suture needle 34 is moved upward under the action of the second elastic member 36 and is located between the needle outlet 32 and the needle pushing member 24, then the distance between the two pressing seats 20 is reduced, so that the suture needle 34 is pushed out of the fixing frame 31 from the needle outlet 32 and is sutured on the diseased mucosa tissue. In this way, the suture needles 34 are gradually released. The above structure can realize continuous suturing of the diseased mucosa tissue, reduces the number of times of installing the suture needle 34, and thereby improves the use efficiency of the product.

[0124] Embodiment three

[0125] As shown in Figure 27 and Figure 28As shown, in one embodiment of the present application, the stitching member 30 comprises a connecting plate 301 and a puncture part 38, the leading end and the trailing end of the connecting plate 301 are oppositely arranged, the connecting plate 301 is in a whole "C" shape, the leading end and the trailing end of the connecting plate 301 are respectively provided with clamping structures 39 capable of being clamped with each other, the connecting plate 301 can be extruded and deformed by the extrusion seat 20 and clamped with each other, and the puncture part 38 is arranged on the two symmetrical surfaces of the connecting plate 301 respectively.

[0126] The two extrusion seats 20 extrude the stitching member 30 together, so that the connecting plate 301 is deformed, the distance between the two symmetrical surfaces of the connecting plate 301 is reduced until the leading end and the trailing end of the connecting plate 301 are clamped with each other, in this process, the puncture part 38 penetrates the diseased mucosa tissue, so that the stitching member 30 tightens the diseased mucosa tissue, thereby ensuring that the diseased mucosa tissue is effectively treated. The structure of the above-mentioned stitching member 30 is simple and easy to process.

[0127] In the description of the present application, it should be explained that the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0128] In the description of the present application, it should be explained that the terms "installation", "connection" and "connection" should be understood in a broad sense, unless otherwise specified and limited. The term "a plurality of" refers to two or more, unless otherwise limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0129] The above describes the present application in combination with the preferred embodiments, but these embodiments are only exemplary and only serve to illustrate. On this basis, various substitutions and improvements can be made to the present application, which all fall within the protection scope of the present application.

Claims

1. A suture release gear drive apparatus characterized by, The suture releasing gear drive device comprises a base provided with a through hole penetrating through the base, the through hole being configured to cooperate with an endoscope; two pressing seats, both of which are arranged on the base and are provided with a space between them, at least one of the pressing seats being capable of sliding relative to the base along a first linear direction or a second linear direction, the first linear direction and the second linear direction being two opposite directions; a suture arranged in the space and capable of being clamped by the two pressing seats to suture the diseased mucosa tissue; a transmission member arranged on the base and capable of moving relative to the base, the transmission member being provided with a meshing tooth, one of the transmission members being connected with one of the pressing seats to drive the pressing seat to move relative to the base; a gear arranged on the base and capable of rotating relative to the base, the gear being engaged with the meshing tooth, the gear being provided with an annular groove; and a control wire coiled in the annular groove and capable of controlling the gear to rotate relative to the base along a first rotation direction or a second rotation direction.

2. The suture releasing gear drive device according to claim 1, wherein the transmission member is a transmission plate, the transmission member is provided with a guide rail, the base is provided with a guide groove matched with the guide rail, and the transmission member is capable of sliding relative to the base along a first linear direction or a second linear direction.

3. The suture releasing gear drive device according to claim 2, wherein the base is provided with a first limiting structure, and the pressing seat is provided with a second limiting structure matched with the first limiting structure; or the base is provided with a first limiting structure, and the transmission plate is provided with a second limiting structure matched with the first limiting structure.

4. The suture releasing gear drive device according to claim 3, wherein one of the first limiting structure and the second limiting structure is a limiting groove, and the other is a limiting block.

5. The suture releasing gear drive device according to claim 1, wherein the transmission member is a rotating rod, and the rotating rod is rotatably installed on the base; the rotating rod is provided with an external thread, and the pressing seat is provided with an internal thread matched with the external thread.

6. The suture releasing gear drive device according to claim 5, wherein the pressing seat is provided with a connecting hole, the end of the rotating rod passes through the connecting hole to be connected with the base, part of the external thread is located in the connecting hole, and the internal thread is arranged on the hole wall of the connecting hole.

7. The suture releasing gear drive device according to claim 5, wherein both of the pressing seats are slidably installed on the base, both ends of the rotating rod are provided with the external threads, the rotation directions of the two external threads are opposite, and the internal threads of the two pressing seats are respectively matched with the two external threads.

8. The suture releasing gear drive device of claim 5, wherein: the number of the rotating rods is two, and the two rotating rods are symmetrically arranged on the base.

9. The suture releasing gear drive of any of claims 1-8, wherein, The suture releasing gear drive device further comprises: a treatment coil arranged in the through hole, the treatment coil being configured to be ligation on the lesion mucosa tissue; a push-pull piece, one end of the push-pull piece being connected with the treatment coil, and the other end of the push-pull piece extending out of the base; and a push tube, the push-pull piece being sleeved on the push tube.

10. The suture releasing gear drive of any of claims 1-8, wherein, An installation hole is arranged on the pressing seat and penetrates the pressing seat along a first straight line direction, and a push needle piece is arranged on the hole wall of the installation hole; The suture comprises: a fixing frame, part of the fixing frame being arranged in the installation hole and being capable of sliding relative to the pressing seat, and the other part of the fixing frame being arranged in the interval, a needle outlet being arranged on the fixing frame, and the arrangement position of the push needle piece corresponding to the position of the needle outlet; a first elastic piece being arranged between the fixing frame and the pressing seat; and a suture needle being arranged on the fixing frame and being located between the needle outlet and the push needle piece, the suture needle comprising an installation portion and a puncture portion arranged on the installation portion, and the puncture portion being capable of being deformed by the pressing seat.

11. The suture releasing gear drive device of claim 10, wherein: the number of the suture needles is multiple, and the multiple suture needles are arranged in a stacked manner to form a suture needle group; the suture further comprises: a needle box arranged on the fixing frame, the needle box having an open-ended accommodating cavity, the arrangement position of the needle box corresponding to the position of the installation hole, the suture needle group being arranged in the accommodating cavity, and the suture needle farthest from the bottom wall of the accommodating cavity among the multiple suture needles being located between the needle outlet and the push needle piece, the bottom wall of the accommodating cavity referring to the cavity wall opposite to the opening; and a second elastic piece being supported between the suture needle group and the bottom wall.

12. The suture releasing gear drive of any of claims 1-8, wherein, The suture comprises two oppositely arranged suture portions, a puncture portion being arranged on one or both of the suture portions, and a clamping structure capable of being clamped with each other being arranged on each of the two suture portions.

13. The suture releasing gear drive device of claim 12, wherein: the suture comprises a connecting plate and a puncture portion, the leading end and the tail end of the connecting plate being oppositely arranged, the connecting plate as a whole being in a "C" shape, the leading end and the tail end of the connecting plate respectively being provided with a clamping structure capable of being clamped with each other, the connecting plate being capable of being deformed by the pressing seat and being clamped with each other, and the puncture portion being arranged on each of the two symmetrically arranged surfaces of the connecting plate.

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