A tissue stapling device

Abstract

The application discloses a tissue suturing device, which comprises a first clamping plate and a second clamping plate, and the first clamping plate and the second clamping plate are movably connected; the first clamping plate is provided with a first middle needle hole group and a second middle needle hole group, and the first middle needle hole group and the second middle needle hole group are arranged adjacently in a first direction of the tissue suturing device; the second clamping plate is provided with a third middle needle hole group and a fourth middle needle hole group, and the third middle needle hole group and the fourth middle needle hole group are arranged adjacently in the first direction; in the state that the first clamping plate and the second clamping plate are matched, the projection position of the first middle needle hole group on the second clamping plate is offset from the projection position of the third middle needle hole group on the second clamping plate in the first direction, and the projection position of the second middle needle hole group on the second clamping plate is offset from the projection position of the fourth middle needle hole group on the second clamping plate in the first direction. The tissue suturing device can realize cross suturing in the tissue, and thus the strength of tissue suturing is increased.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a tissue suturing device. Background Technology

[0002] Tissue rupture and loss are common conditions, such as tendon rupture in the human body. Tissue rupture is mostly caused by injury or disease. To restore tissue function, such as the function of limbs, fingers, or toes, ruptured tissue must be repaired promptly. For example, suture devices are used clinically to suture ruptured tendons. However, there are many problems with tissue suturing. For instance, due to the small size and retraction characteristics of tendons, suture failure is common in clinical practice due to low suture strength. Furthermore, current suture devices often result in a strong foreign body sensation after suturing ruptured tissue.

[0003] Therefore, there is an urgent need for a tissue suturing device that can not only increase the strength of tissue suturing, but also reduce the foreign body sensation in the sutured tissue. Summary of the Invention

[0004] This application provides a tissue suturing device that can achieve cross-stitching within the tissue, thereby increasing the strength of the tissue suture. At the same time, it can also reduce the amount of suture outside the tissue, thereby reducing the foreign body sensation in the sutured tissue.

[0005] This application provides a tissue suturing device, including a first clamp and a second clamp, wherein the first clamp and the second clamp are movably connected;

[0006] The first clamp and the second clamp together form a tissue positioning cavity, which can accommodate the tissue to be sutured.

[0007] The first clamp is provided with a first intermediate pinhole group and a second intermediate pinhole group, which are arranged adjacent to each other in the first direction of the tissue suturing device.

[0008] The second clamp is provided with a third intermediate pinhole group and a fourth intermediate pinhole group, which are arranged adjacent to each other in the first direction;

[0009] With the first clamp and the second clamp in the working state, the projection position of the first intermediate pinhole group on the second clamp is offset in the first direction from the projection position of the third intermediate pinhole group on the second clamp, and the projection position of the second intermediate pinhole group on the second clamp is offset in the first direction from the projection position of the fourth intermediate pinhole group on the second clamp.

[0010] A first needle-passing channel is formed between the first intermediate pinhole group and the third intermediate pinhole group, and a second needle-passing channel is formed between the second intermediate pinhole group and the fourth intermediate pinhole group.

[0011] Furthermore, in the state where the first clamp and the second clamp are engaged, the projection position of the first intermediate needle hole group on the second clamp is biased in the second direction of the tissue suturing device to the projection position of the third intermediate needle hole group on the second clamp, and the projection position of the second intermediate needle hole group on the second clamp is biased in the second direction to the projection position of the fourth intermediate needle hole group on the second clamp.

[0012] The second direction intersects with the first direction.

[0013] Furthermore, the first intermediate pinhole group, the second intermediate pinhole group, the third intermediate pinhole group, and the fourth intermediate pinhole group all include a plurality of intermediate needle holes arranged sequentially along the second direction, and the intermediate needle holes have a needle inlet position and a needle outlet position arranged along the second direction.

[0014] Furthermore, the first intermediate pinhole group and the second intermediate pinhole group are arranged symmetrically with the second direction as the axial direction;

[0015] The third and fourth intermediate pinhole groups are arranged symmetrically with the second direction as the axis.

[0016] Furthermore, the first clamping plate is also provided with a first steering pin hole, and the second clamping plate is also provided with a second steering pin hole and a third steering pin hole;

[0017] The first directional needle hole has a needle inlet position and a needle outlet position arranged along the first direction; the second directional needle hole has a needle inlet position and a needle outlet position arranged along the second direction; and the third directional needle hole has a needle inlet position and a needle outlet position arranged along the third direction.

[0018] The third direction intersects with the first direction and the second direction, respectively.

[0019] Furthermore, the cross-section of the tissue positioning cavity with the first direction as the axial direction is elliptical.

[0020] Furthermore, the walls of the intermediate needle hole, the first steering needle hole, the second steering needle hole, and the third steering needle hole are all provided with needle-guiding slopes.

[0021] Furthermore, at least one anti-slip protrusion is provided on the inner wall of the first clamping plate facing the second clamping plate;

[0022] At least one anti-slip protrusion is provided on the inner wall of the second clamping plate facing the first clamping plate.

[0023] Furthermore, the first clamping plate is provided with a first positioning end at both ends along the second direction, and a plurality of first tissue positioning protrusions are provided on the inner wall of the first positioning end, and a first positioning groove is formed between adjacent first tissue positioning protrusions.

[0024] The second clamping plate is provided with a second positioning end at both ends along the second direction. The inner wall of the second positioning end is provided with a plurality of second tissue positioning protrusions, and a second positioning channel is formed between adjacent second tissue positioning protrusions.

[0025] When the first clamping plate and the second clamping plate are engaged, a clamping position is formed between a single first tissue positioning protrusion and a single second positioning groove.

[0026] Furthermore, the first clamping plate is provided with a first connecting end and a first free end, and the second clamping plate is provided with a second connecting end and a second free end, wherein the first connecting end and the second connecting end are movably connected;

[0027] On the first free end and the second free end, one of them is provided with a protrusion and the other is provided with a slot, and the protrusion and the slot are engaged.

[0028] The tissue suturing device provided in this application has the following beneficial effects:

[0029] In this embodiment of the tissue suturing device, a first clamping plate 10 and a second clamping plate 20 are movably connected. When the first clamping plate 10 and the second clamping plate 20 are engaged, they form a tissue positioning cavity capable of accommodating the tissue to be sutured. The first clamping plate 10 is provided with a first intermediate pinhole group 11 and a second intermediate pinhole group 12, which are arranged adjacent to each other in a first direction of the tissue suturing device. The second clamping plate 20 is provided with a third intermediate pinhole group 21 and a fourth intermediate pinhole group 22, which are also arranged adjacent to each other in the first direction. When the first clamping plate 10 and the second clamping plate 20 are engaged... The projection position of the first intermediate pinhole group 11 on the second clamping plate 20 is offset in the first direction from the projection position of the third intermediate pinhole group 21 on the second clamping plate 20. The projection position of the second intermediate pinhole group 12 on the second clamping plate 20 is offset in the first direction from the projection position of the fourth intermediate pinhole group 22 on the second clamping plate 20. A first needle passage is formed between the first intermediate pinhole group 11 and the third intermediate pinhole group 21, and a second needle passage is formed between the second intermediate pinhole group 12 and the fourth intermediate pinhole group 22. In this way, cross-suture within the tissue can be achieved, thereby increasing the strength of the tissue suture. At the same time, it can also reduce the amount of suture outside the tissue, thereby reducing the foreign body sensation in the sutured tissue. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A front view of a tissue suturing apparatus provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of a tissue suturing device provided in an embodiment of this application;

[0033] Figure 3 A front view of a tissue suturing device and suture provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a tissue suturing device and suture provided in an embodiment of this application;

[0035] Figure 5 A side view of a tissue suturing device in conjunction with a suture, provided in an embodiment of this application;

[0036] Figure 6 A front view of a tissue suturing device and suture provided in an embodiment of this application;

[0037] Figure 7 A front view of a tissue suturing device used in conjunction with tissue, provided in an embodiment of this application;

[0038] Figure 8 This is a schematic diagram of the structure after tissue suturing, provided as an embodiment of this application.

[0039] The following is supplementary explanation of the attached figures:

[0040] 10-First clamping plate; 11-First intermediate needle hole group; 12-Second intermediate needle hole group; 13-First turning needle hole; 14-First tissue positioning protrusion ring; 15-First positioning groove; 16-Protrusion; 17-Needle initiation hole; 18-Needle retraction hole; 20-Second clamping plate; 21-Third intermediate needle hole group; 22-Fourth intermediate needle hole group; 23-Second turning needle hole; 24-Third turning needle hole; 25-Second tissue positioning protrusion ring; 26-Second positioning groove; 27-Slot; 30-Suture; 40-First broken end; 50-Second broken end; 60-Break. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0042] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0043] The technical solutions in the embodiments of this application are described below with reference to the accompanying drawings, which can be applied to the suturing of ruptured tendons.

[0044] Please see Figure 1-8 The tissue suturing device includes a first clamp 10 and a second clamp 20, which are movably connected. The first clamp 10 and the second clamp 20, when engaged, form a tissue positioning cavity capable of accommodating the tissue to be sutured. The first clamp 10 is provided with a first intermediate pinhole group 11 and a second intermediate pinhole group 12, which are arranged adjacent to each other in a first direction of the tissue suturing device. The second clamp 20 is provided with a third intermediate pinhole group 21 and a fourth intermediate pinhole group 22, which are... The first intermediate pinhole group 11 and the second intermediate pinhole group 21 are arranged adjacent to each other in the first direction. When the first clamping plate 10 and the second clamping plate 10 are engaged, the projection position of the first intermediate pinhole group 11 on the second clamping plate 20 is offset in the first direction from the projection position of the third intermediate pinhole group 21 on the second clamping plate 20, and the projection position of the second intermediate pinhole group 12 on the second clamping plate 20 is offset in the first direction from the projection position of the fourth intermediate pinhole group 22 on the second clamping plate 20. A first needle-threading channel is formed between the first intermediate pinhole group 11 and the third intermediate pinhole group 21, and a second needle-threading channel is formed between the second intermediate pinhole group 12 and the fourth intermediate pinhole group 22.

[0045] In some embodiments, a first cavity is provided on the side of the first clamping plate 10 near the second clamping plate 20, and a second cavity is provided on the side of the second clamping plate 20 near the first clamping plate 10. When the first clamping plate 10 and the second clamping plate 10 are engaged, the first cavity and the second cavity engage to form a tissue positioning cavity, which can accommodate the first cut end 40 and the second cut end 50 of the tissue to be sutured.

[0046] Furthermore, with the tissue suturing device open, the first cut end 40 and the second cut end 50 of the tissue to be sutured are placed in the tissue positioning cavity, and the direction of the cut 60 of the tissue to be sutured is consistent with the first direction of the tissue suturing device.

[0047] In some embodiments, the tissue suturing device is approximately cuboid, and correspondingly, the tissue positioning cavity is an elongated cavity, with the width direction of the tissue suturing device aligned with the first direction.

[0048] In some embodiments, with the first clamping plate 10 and the second clamping plate 10 engaged, the first intermediate needle hole group 11 and the third intermediate needle hole group 21 are offset, and the second intermediate needle hole group 12 and the fourth intermediate needle hole group 22 are offset. In this way, the direction of needle insertion can be tilted to the outer hole surface of the first clamping plate 10, rather than perpendicular to the outer hole surface of the first clamping plate 10, so as to achieve oblique needle insertion, which can increase the length of the suture 30 in the tissue to be sutured, thereby increasing the strength of tissue suturing.

[0049] Furthermore, the first needle-passing channel includes multiple parallel first sub-channels. The suture needle can pass through a single first sub-channel, either by entering through the first splint 10 and exiting through the second splint 20, or by entering through the second splint 20 and exiting through the first splint 10. The suture needle can also pass through the first needle-passing channel along a second direction from the first end to the second end of the tissue suturing device.

[0050] The second direction intersects the tissue cross-section; preferably, the second direction is perpendicular to the tissue cross-section. When the tissue suturing device is approximately cuboid, the length direction of the tissue suturing device is consistent with the second direction.

[0051] Furthermore, the second direction intersects with the first direction; preferably, the second direction is perpendicular to the first direction.

[0052] Furthermore, the second needle-passing channel includes multiple parallel second sub-channels. A suture needle can pass through a single second sub-channel, either by entering through the first clamp 10 and exiting through the second clamp 20, or vice versa. The suture needle can also pass through the second needle-passing channel from the second end to the first end of the tissue suturing device along a second direction.

[0053] The tissue suturing device of this application can achieve figure-eight cross suturing within the tissue, thereby increasing the strength of the tissue suture. At the same time, it can also reduce the length of the suture 30 outside the tissue, thereby reducing the foreign body sensation in the sutured tissue.

[0054] In this embodiment, when the first clamping plate 10 and the second clamping plate 10 are engaged, the projection position of the first intermediate pinhole group 11 on the second clamping plate 20 is offset in the second direction of the tissue suturing device from the projection position of the third intermediate pinhole group 21 on the second clamping plate 20, and the projection position of the second intermediate pinhole group 12 on the second clamping plate 20 is offset in the second direction from the projection position of the fourth intermediate pinhole group 22 on the second clamping plate 20.

[0055] Furthermore, the projection positions of the first sub-channel on the second clamp 20 intersect with the first direction and the second direction, respectively, and the projection positions of the second sub-channel on the second clamp 20 intersect with the first direction and the second direction, respectively. In this way, oblique needle insertion can be further realized, the length of the suture 30 in the tissue to be sutured can be further increased, and the strength of tissue suturing can be further increased.

[0056] In this embodiment of the application, the first intermediate pinhole group 11, the second intermediate pinhole group 12, the third intermediate pinhole group 21 and the fourth intermediate pinhole group 22 each include a plurality of intermediate needle holes arranged sequentially along the second direction, and the intermediate needle holes have a needle entry position and a needle exit position arranged along the second direction.

[0057] In some embodiments, the central needle hole has an entry point and an exit point arranged along the second direction. The suture needle and suture 30 can exit from the exit point of the current central needle hole and then enter from the entry point of the current central needle hole. In this way, the length of the suture 30 outside the tissue can be reduced, thereby reducing the foreign body sensation of the sutured tissue. At the same time, it can also prevent the suture 30 from getting tangled in the tissue suturing device, making it easier to separate the tissue suturing device from the sutured tissue after the operation.

[0058] Specifically, the needle hole in the middle can be a waist-shaped hole, and the length direction of the waist-shaped hole is consistent with the second direction.

[0059] In this embodiment, the first intermediate pinhole group 11 and the second intermediate pinhole group 12 are symmetrically arranged with the second direction as the axis; the third intermediate pinhole group 21 and the fourth intermediate pinhole group 22 are symmetrically arranged with the second direction as the axis.

[0060] In some embodiments, the number of intermediate needle holes in the first intermediate needle hole group 11 and the second intermediate needle hole group 12 are the same, and they are arranged in parallel in a one-to-one correspondence; the number of intermediate needle holes in the third intermediate needle hole group 21 and the fourth intermediate needle hole group 22 are the same, and they are arranged in parallel in a one-to-one correspondence.

[0061] Furthermore, the number of intermediate needle holes in the first intermediate needle hole group 11, the second intermediate needle hole group 12, the third intermediate needle hole group 21, and the fourth intermediate needle hole group 22 is the same.

[0062] Specifically, the first intermediate pinhole group 11, the second intermediate pinhole group 12, the third intermediate pinhole group 21 and the fourth intermediate pinhole group 22 each include 3 intermediate pinholes. Among them, the 6 intermediate pinholes are arranged in a 3*2 matrix on the first clamping plate 10 and the 6 intermediate pinholes are arranged in a 3*2 matrix on the second clamping plate 20.

[0063] In this embodiment, the first clamping plate 10 is further provided with a needle initiation hole 17, a needle retraction hole 18, and a first turning needle hole 13, and the second clamping plate 20 is further provided with a second turning needle hole 23 and a third turning needle hole 24; the first turning needle hole 13 has a needle inlet position and a needle outlet position arranged along a first direction, the second turning needle hole 23 has a needle inlet position and a needle outlet position arranged along a second direction, and the third turning needle hole 24 has a needle inlet position and a needle outlet position arranged along a third direction; the third direction intersects with the first direction and the second direction respectively.

[0064] In some embodiments, the suture needle starts from the needle initiation hole 17 and passes through the first needle passage to move from the first end to the second end of the tissue suturing device in a second direction. When the suture needle reaches the second end, it can turn sequentially through the first turning needle hole 13, the second turning needle hole 23, and the third turning needle hole 24. Then, the suture needle passes through the second needle passage to move from the second end to the first end of the tissue suturing device in a second direction. Finally, it is withdrawn through the needle withdrawal hole 18. In this way, a figure-eight cross suture is achieved in the tissue, thereby increasing the strength of the tissue suture.

[0065] In this embodiment, the cross-section of the tissue positioning cavity with the first direction as the axial direction is elliptical. Thus, the tissue suturing device can compress the tissue to be sutured into an elliptical shape, thereby increasing the suture surface area of ​​the tissue and facilitating suture threading.

[0066] For details, please see Figure 5 On the cross section perpendicular to the outer hole surface of the first clamping plate 10 and consistent with the first direction, the tissue positioning cavity is elliptical.

[0067] In this embodiment, the walls of the middle needle hole, the first turning needle hole 13, the second turning needle hole 23, and the third turning needle hole 24 are all provided with needle-guiding slopes.

[0068] Furthermore, the intermediate needle hole of the first intermediate needle hole group 11 is provided with a first needle guide slope on the hole wall, and the intermediate needle hole of the third intermediate needle hole group 21 is provided with a third needle guide slope on the hole wall, and a first sub-channel is formed between the first needle guide slope and the corresponding third needle guide slope.

[0069] Furthermore, the first included angle between the respective extended surfaces of the first needle-threading guide slope and the corresponding third needle-threading guide slope is less than a first preset angle range, specifically, the first preset angle range can be 5°.

[0070] Preferably, the first preset angle range is 0°, and the extended surfaces of the first needle-guided bevel and the corresponding third needle-guided bevel are smoothly connected. In this way, the needle-guided bevel guides the suture needle, facilitating the insertion and exit of the suture needle in the tissue suturing device.

[0071] Furthermore, the intermediate needle hole of the second intermediate needle hole group 12 is provided with a second needle guide slope on the hole wall, and the intermediate needle hole of the fourth intermediate needle hole group 22 is provided with a fourth needle guide slope on the hole wall. A second sub-channel is formed between the second needle guide slope and the corresponding fourth needle guide slope.

[0072] Furthermore, the second included angle between the respective extended surfaces of the second needle-threading guide slope and the corresponding fourth needle-threading guide slope is less than the second preset angle range, specifically, the second preset angle range can be 5°.

[0073] Preferably, the second preset angle range is 0°, and the extended surfaces of the second needle guide bevel and the corresponding fourth needle guide bevel are smoothly connected. In this way, the needle guide bevel guides the suture needle, facilitating the insertion and exit of the suture needle in the tissue suturing device.

[0074] In this embodiment, at least one anti-slip protrusion is provided on the inner wall of the first clamping plate 10 facing the second clamping plate 20; at least one anti-slip protrusion is provided on the inner wall of the second clamping plate 20 facing the first clamping plate 10.

[0075] In some embodiments, the inner wall of the first clamping plate 10 facing the second clamping plate 20 is provided with multiple anti-slip protrusions, and the inner wall of the second clamping plate 20 facing the first clamping plate 10 is provided with multiple anti-slip protrusions. In this way, the retraction and displacement of the first cut end 40 and the second cut end 50 of the tissue to be sutured can be prevented, making it easier to suture the tissue to be sutured by the tissue suturing device, thereby improving the suturing effect and efficiency of the tissue suturing device.

[0076] In this embodiment, the first clamping plate 10 has a first positioning end at both ends along the second direction, and a plurality of first tissue positioning protrusions 14 are provided on the inner wall of the first positioning end, forming a first positioning channel 15 between adjacent first tissue positioning protrusions 14; the second clamping plate 20 has a second positioning end at both ends along the second direction, and a plurality of second tissue positioning protrusions 25 are provided on the inner wall of the second positioning end, forming a second positioning channel 26 between adjacent second tissue positioning protrusions 25; when the first clamping plate 10 and the second clamping plate 10 are engaged, a clamping position is formed between a single first tissue positioning protrusion 14 and a single second positioning channel 26.

[0077] In some embodiments, when the first clamping plate 10 and the second clamping plate 10 are engaged, a first clamping position is formed between a single first tissue positioning protrusion 14 and a single second positioning groove 26, and a second clamping position is formed between a single first positioning groove 15 and a single second tissue positioning protrusion 25. Through the first clamping position and the second clamping position, the first cut end 40 and the second cut end 50 of the tissue to be sutured are squeezed and deformed. In this way, the retraction and displacement of the first cut end 40 and the second cut end 50 of the tissue to be sutured can be further prevented, thereby further improving the suturing effect and efficiency of the tissue suturing device.

[0078] In this embodiment of the application, the first clamping plate 10 is provided with a first connecting end and a first free end, and the second clamping plate 20 is provided with a second connecting end and a second free end. The first connecting end and the second connecting end are movably connected. On the first free end and the second free end, one of them is provided with a protrusion 16, and the other is provided with a slot 27. The protrusion 16 and the slot 27 are engaged.

[0079] In some embodiments, a protrusion 16 is provided on the first free end and a slot 27 is provided on the second free end. The protrusion 16 and the slot 27 are engaged, which facilitates the opening and closing of the tissue suturing device.

[0080] In other embodiments, a slot 27 is provided on the first free end and a protrusion 16 is provided on the second free end. The protrusion 16 and the slot 27 are engaged, which facilitates the opening and closing of the tissue suturing device.

[0081] The tissue suturing device in this embodiment can achieve figure-eight cross suturing within the tissue through double rows of holes, thereby increasing the strength of the tissue suture. At the same time, it can also reduce the length of the suture 30 outside the tissue, thereby reducing the foreign body sensation in the sutured tissue.

[0082] Example 1

[0083] Please see Figures 1 to 8Embodiment 1 provides a tissue suturing device, including a first clamp 10 and a second clamp 20, which are movably connected. The first clamp 10 and the second clamp 20, when engaged, form a tissue positioning cavity capable of accommodating the tissue to be sutured. The first clamp 10 is provided with a first intermediate pinhole group 11 and a second intermediate pinhole group 12, which are arranged adjacent to each other in a first direction of the tissue suturing device. The second clamp 20 is provided with a third intermediate pinhole group 21 and a fourth intermediate pinhole group 22, which are arranged adjacent to each other in a first direction of the tissue suturing device. The pinhole groups 22 are arranged adjacent to each other in the first direction; when the first clamping plate 10 and the second clamping plate 10 are engaged, the projection position of the first intermediate pinhole group 11 on the second clamping plate 20 is offset in the first direction from the projection position of the third intermediate pinhole group 21 on the second clamping plate 20, and the projection position of the second intermediate pinhole group 12 on the second clamping plate 20 is offset in the first direction from the projection position of the fourth intermediate pinhole group 22 on the second clamping plate 20; a first needle-threading channel is formed between the first intermediate pinhole group 11 and the third intermediate pinhole group 21, and a second needle-threading channel is formed between the second intermediate pinhole group 12 and the fourth intermediate pinhole group 22.

[0084] A first cavity is provided on the side of the first clamping plate 10 near the second clamping plate 20, and a second cavity is provided on the side of the second clamping plate 20 near the first clamping plate 10. When the first clamping plate 10 and the second clamping plate 10 are engaged, the first cavity and the second cavity engage to form a tissue positioning cavity, which can accommodate the first cut end 40 and the second cut end 50 of the tissue to be sutured.

[0085] The first needle-passing channel includes multiple parallel first sub-channels. The needle can pass through a single first sub-channel, either by entering through the first clamp 10 and exiting through the second clamp 20, or by entering through the second clamp 20 and exiting through the first clamp 10. The needle can also pass through the first needle-passing channel along a second direction from the first end to the second end of the tissue suturing device.

[0086] The second needle-passing channel includes multiple parallel second sub-channels. A suture needle can pass through a single second sub-channel, either by entering through the first clamp 10 and exiting through the second clamp 20, or vice versa. The suture needle can also pass through the second needle-passing channel from the second end to the first end of the tissue suturing device along a second direction.

[0087] The direction of the cut surface 60 of the tissue to be sutured is consistent with the first direction of the tissue suturing device, and the second direction is perpendicular to the first direction.

[0088] With the first clamp 10 and the second clamp 10 engaged, the projection position of the first intermediate pinhole group 11 on the second clamp 20 is offset in the second direction of the tissue suturing device from the projection position of the third intermediate pinhole group 21 on the second clamp 20, and the projection position of the second intermediate pinhole group 12 on the second clamp 20 is offset in the second direction from the projection position of the fourth intermediate pinhole group 22 on the second clamp 20.

[0089] The projection positions of the first sub-channel on the second clamp 20 intersect with the first direction and the second direction, respectively. The projection positions of the second sub-channel on the second clamp 20 intersect with the first direction and the second direction, respectively. In this way, oblique needle insertion can be further realized, the length of the suture 30 in the tissue to be sutured can be further increased, and the strength of tissue suturing can be further increased.

[0090] The first intermediate pinhole group 11, the second intermediate pinhole group 12, the third intermediate pinhole group 21 and the fourth intermediate pinhole group 22 each include a plurality of intermediate needle holes arranged sequentially along the second direction, and the intermediate needle holes have a needle entry position and a needle exit position arranged along the second direction.

[0091] The central needle hole has an entry point and an exit point set along the second direction. The suture needle and suture 30 can pass through the exit point of the current central needle hole and then pass through the entry point of the current central needle hole. In this way, the length of the suture 30 outside the tissue can be reduced, thereby reducing the foreign body sensation of the sutured tissue. At the same time, it can also prevent the suture 30 from getting tangled in the tissue suturing device, making it easier to separate the tissue suturing device from the sutured tissue after surgery.

[0092] The first intermediate pinhole group 11, the second intermediate pinhole group 12, the third intermediate pinhole group 21 and the fourth intermediate pinhole group 22 each include 3 intermediate pinholes. Among them, the 6 intermediate pinholes are arranged in a 3*2 matrix on the first clamping plate 10 and the 6 intermediate pinholes are arranged in a 3*2 matrix on the second clamping plate 20.

[0093] The first clamping plate 10 is also provided with a needle initiation hole 17, a needle retraction hole 18, and a first turning needle hole 13. The second clamping plate 20 is also provided with a second turning needle hole 23 and a third turning needle hole 24. The first turning needle hole 13 has a needle inlet position and a needle outlet position set along a first direction. The second turning needle hole 23 has a needle inlet position and a needle outlet position set along a second direction. The third turning needle hole 24 has a needle inlet position and a needle outlet position set along a third direction. The third direction intersects with the first direction and the second direction respectively.

[0094] The suture needle starts from the needle initiation hole 17 and passes through the first needle channel to move from the first end to the second end of the tissue suturing device in the second direction. When the suture needle reaches the second end, it can turn through the first turning needle hole 13, the second turning needle hole 23 and the third turning needle hole 24 in sequence. Then, the suture needle passes through the second needle channel to move from the second end to the first end of the tissue suturing device in the second direction. Finally, it is withdrawn through the needle withdrawal hole 18. In this way, the figure-eight cross suture is achieved in the tissue, thereby increasing the strength of the tissue suture.

[0095] On the cross section perpendicular to the outer hole surface of the first clamping plate 10 and consistent with the first direction, the tissue positioning cavity is elliptical.

[0096] The intermediate needle hole of the first intermediate needle hole group 11 is provided with a first needle guiding slope on the hole wall, and the intermediate needle hole of the third intermediate needle hole group 21 is provided with a third needle guiding slope on the hole wall. The first needle guiding slope and the corresponding third needle guiding slope form a first sub-channel.

[0097] The first included angle between the extended surfaces of the first needle-guiding bevel and the corresponding third needle-guiding bevel is 0°, and the extended surfaces of the first needle-guiding bevel and the corresponding third needle-guiding bevel are smoothly connected. In this way, the needle-guiding bevel guides the suture needle, making it easier for the suture needle to enter and exit the tissue suturing device.

[0098] The intermediate needle hole of the second intermediate needle hole group 12 is provided with a second needle guide slope on the hole wall, and the intermediate needle hole of the fourth intermediate needle hole group 22 is provided with a fourth needle guide slope on the hole wall. The second needle guide slope and the corresponding fourth needle guide slope form a second sub-channel.

[0099] The second included angle between the extended surfaces of the second needle-guiding bevel and the corresponding fourth needle-guiding bevel is 0°, and the extended surfaces of the second needle-guiding bevel and the corresponding fourth needle-guiding bevel are smoothly connected. In this way, the needle-guiding bevel guides the suture needle, making it easier for the suture needle to enter and exit the tissue suturing device.

[0100] Multiple anti-slip protrusions are provided on the inner wall of the first clamping plate 10 facing the second clamping plate 20, and multiple anti-slip protrusions are provided on the inner wall of the second clamping plate 20 facing the first clamping plate 10. In this way, the retraction and displacement of the first cut end 40 and the second cut end 50 of the tissue to be sutured can be prevented, making it easier to suture the tissue to be sutured by the tissue suturing device, thereby improving the suturing effect and efficiency of the tissue suturing device.

[0101] The first clamping plate 10 has a first positioning end at both ends along the second direction. The inner wall of the first positioning end is provided with a plurality of first tissue positioning protrusions 14, and a first positioning channel 15 is formed between adjacent first tissue positioning protrusions 14. The second clamping plate 20 has a second positioning end at both ends along the second direction. The inner wall of the second positioning end is provided with a plurality of second tissue positioning protrusions 25, and a second positioning channel 26 is formed between adjacent second tissue positioning protrusions 25.

[0102] When the first clamping plate 10 and the second clamping plate 10 are engaged, a first clamping position is formed between a single first tissue positioning protrusion 14 and a single second positioning groove 26, and a second clamping position is formed between a single first positioning groove 15 and a single second tissue positioning protrusion 25. Through the first clamping position and the second clamping position, the first cut end 40 and the second cut end 50 of the tissue to be sutured are squeezed and deformed. In this way, the retraction and displacement of the first cut end 40 and the second cut end 50 of the tissue to be sutured can be further prevented, thereby further improving the suturing effect and efficiency of the tissue suturing device.

[0103] The first clamping plate 10 is provided with a first connecting end and a first free end, and the second clamping plate 20 is provided with a second connecting end and a second free end. The first connecting end and the second connecting end are movably connected. A protrusion 16 is provided on the first free end, and a slot 27 is provided on the second free end. The protrusion 16 and the slot 27 are engaged, which facilitates the opening and closing of the tissue suturing device.

[0104] The following describes the figure-eight needle insertion sequence of the tissue suturing device in a specific application scenario, and the specific suturing process is as follows:

[0105] The first broken end 40 and the second broken end 50 are placed and fixed in the tissue positioning cavity. The suture needle is inserted from position A1 of the starting hole 17, exits from position A2 of the third intermediate needle hole group 21, then from position A3 of the third intermediate needle hole group 21, exits from position A4 of the first intermediate needle hole group 11, and so on, until it exits from position A14 of the second turning needle hole 23. Then it is inserted from position A15 of the second turning needle hole 23, exits from position A16 of the first turning needle hole 13, and then from position A15 of the first turning needle hole 13... Insert the needle at position A17 and exit at position A18 of the third turning needle hole 24. Then insert it at position A19 of the third turning needle hole 24 and exit at position A20 of the second intermediate needle hole group 12. Next, insert it at position A21 of the second intermediate needle hole group 12 and exit at position A22 of the fourth intermediate needle hole group 22. Then insert it at position A23 of the fourth intermediate needle hole group 22, and so on, until inserting it at position A31 of the fourth intermediate needle hole group 22. Finally, it exits at position A32 of the receiving needle hole 18. This completes the figure-eight needle threading.

[0106] The tissue suturing device in Example 1 can achieve figure-eight cross suturing within the tissue through double rows of holes, thereby increasing the strength of the tissue suture. At the same time, it can also reduce the number of sutures outside the tissue 30, thereby reducing the foreign body sensation in the sutured tissue.

[0107] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tissue suturing device, characterized in that, It includes a first clamping plate (10) and a second clamping plate (20), which are movably connected; The first clamp (10) and the second clamp (20) cooperate to form a tissue positioning cavity, which can accommodate the tissue to be sutured; The first clamping plate (10) is provided with a first intermediate pinhole group (11) and a second intermediate pinhole group (12), and the first intermediate pinhole group (11) and the second intermediate pinhole group (12) are arranged adjacent to each other in the first direction of the tissue suturing device; The second clamping plate (20) is provided with a third intermediate pinhole group (21) and a fourth intermediate pinhole group (22), which are arranged adjacent to each other in the first direction; With the first clamping plate (10) and the second clamping plate (20) in the same position, the projection position of the first intermediate pinhole group (11) on the second clamping plate (20) is offset in the first direction from the projection position of the third intermediate pinhole group (21) on the second clamping plate (20), and the projection position of the second intermediate pinhole group (12) on the second clamping plate (20) is offset in the first direction from the projection position of the fourth intermediate pinhole group (22) on the second clamping plate (20). A first needle-passing channel is formed between the first intermediate needle hole group (11) and the third intermediate needle hole group (21), and a second needle-passing channel is formed between the second intermediate needle hole group (12) and the fourth intermediate needle hole group (22). With the first clamp (10) and the second clamp (20) in the same position, the projection position of the first intermediate pinhole group (11) on the second clamp (20) is biased in the second direction of the tissue suturing device to the projection position of the third intermediate pinhole group (21) on the second clamp (20), and the projection position of the second intermediate pinhole group (12) on the second clamp (20) is biased in the second direction to the projection position of the fourth intermediate pinhole group (22) on the second clamp (20); The second direction intersects with the first direction.

2. The tissue suturing device according to claim 1, characterized in that, The first intermediate pinhole group (11), the second intermediate pinhole group (12), the third intermediate pinhole group (21) and the fourth intermediate pinhole group (22) each include a plurality of intermediate needle holes arranged sequentially along the second direction. The intermediate needle holes have a needle inlet position and a needle outlet position arranged along the second direction.

3. The tissue suturing device according to claim 1, characterized in that, The first intermediate pinhole group (11) and the second intermediate pinhole group (12) are arranged symmetrically with the second direction as the axis; The third intermediate pinhole group (21) and the fourth intermediate pinhole group (22) are arranged symmetrically with the second direction as the axis.

4. The tissue suturing device according to claim 2, characterized in that, The first clamping plate (10) is also provided with a first steering pin hole (13), and the second clamping plate (20) is also provided with a second steering pin hole (23) and a third steering pin hole (24); The first turning needle hole (13) has a needle inlet position and a needle outlet position arranged along the first direction, the second turning needle hole (23) has a needle inlet position and a needle outlet position arranged along the second direction, and the third turning needle hole (24) has a needle inlet position and a needle outlet position arranged along the third direction; The third direction intersects with the first direction and the second direction, respectively.

5. The tissue suturing device according to any one of claims 1-4, characterized in that, The cross-section of the tissue positioning cavity with the first direction as the axial direction is elliptical.

6. The tissue suturing device according to claim 4, characterized in that, The walls of the intermediate needle hole, the first turning needle hole (13), the second turning needle hole (23), and the third turning needle hole (24) are all provided with needle-guiding slopes.

7. The tissue suturing device according to any one of claims 1-4, characterized in that, At least one anti-slip protrusion is provided on the inner wall of the first clamping plate (10) facing the second clamping plate (20); The second clamping plate (20) has at least one anti-slip protrusion on its inner wall facing the first clamping plate (10).

8. The tissue suturing apparatus according to any one of claims 1, characterized in that, The first clamp (10) is provided with a first positioning end at both ends along the second direction. The inner wall of the first positioning end is provided with a plurality of first tissue positioning protrusions (14), and a first positioning channel (15) is formed between adjacent first tissue positioning protrusions (14). The second clamp (20) is provided with a second positioning end at both ends along the second direction. The inner wall of the second positioning end is provided with a plurality of second tissue positioning protrusions (25), and a second positioning channel (26) is formed between adjacent second tissue positioning protrusions (25). When the first clamping plate (10) and the second clamping plate (20) are engaged, a clamping position is formed between a single first tissue positioning protrusion (14) and a single second positioning groove (26).

9. The tissue suturing device according to any one of claims 1-4, characterized in that, The first clamping plate (10) is provided with a first connecting end and a first free end, and the second clamping plate (20) is provided with a second connecting end and a second free end, wherein the first connecting end and the second connecting end are movably connected; On the first free end and the second free end, one of them is provided with a protrusion (16) and the other is provided with a slot (27), and the protrusion (16) and the slot (27) are engaged.

Images