Medical suture device and medical suture tensioning assembly

Abstract

The utility model relates to a medical suture device and a medical suture tensioning assembly. The medical suture tensioning assembly comprises a mounting shell, a spring, a rotating shaft and a reel. And the spring is arranged in the mounting shell. The mounting shell is provided with a first shaft hole, and the rotating shaft is rotatably arranged in the first shaft hole in a penetrating mode and connected with the spring. The reel is connected with the rotating shaft, the rotating shaft can be synchronously driven to rotate when the reel rotates to unwind, and the rotating shaft correspondingly drives the clockwork spring to be tightened. When the reel of the medical suture line tensioning assembly rotates to unwind, the more the rotating turns of the reel are, the more the amount of the loosened suture line is, meanwhile, due to the fact that the reel can synchronously drive the rotating shaft to rotate, the rotating shaft correspondingly drives the clockwork spring to be curled to tighten up to store force or rebound to generate force, in the process that the clockwork spring rotates along with the rotating shaft to tighten up, the tensioning force of the suture line can be improved, and the suture line can be tensioned. The suture line can be in a straightened and tensioned state, so that the bad defects of suture line staggering, winding or knotting and the like can be prevented, the safety is improved, and the operation success rate is increased.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a medical suture device and a medical suture tensioning assembly. Background Art

[0002] Suturing is to align or reconstruct the channels of incised or traumatized tissues and organs to restore their functions. It is a basic condition for ensuring good healing and one of the important basic surgical operation techniques. Different tissues and organs in different parts need to be sutured in different ways.

[0003] During the suturing process of the medical suture device in the related art, the wire winding wheel of the medical suture device rotates synchronously to release the suture. As the number of rotations of the wire winding wheel increases, the degree of slack of the suture gradually increases. However, this will easily lead to adverse defects such as the suture being staggered, entangled or knotted, with low safety and easy to cause the failure of the suturing operation; or, manual intervention is required to tension the suture, but this will increase the surgical operation and the operation difficulty. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a medical suture device and a medical suture tensioning assembly, which can keep the suture in a tensioned state during the suture release process, thereby improving safety and the success probability of the operation.

[0005] A medical suture tensioning assembly, the suture tensioning assembly comprising:

[0006] A mounting shell provided with a first shaft hole;

[0007] A rotating shaft rotatably passing through the first shaft hole;

[0008] A wire winding wheel circumferentially and limitably connected to the rotating shaft, and the wire winding wheel can synchronously drive the rotating shaft to rotate when rotating and unwinding the suture; and

[0009] A clockwork spring disposed inside the mounting shell and connected to the rotating shaft, and the clockwork spring adaptively tightens when the wire winding wheel rotates and unwinds the suture.

[0010] In one embodiment, the clockwork spring is wound in the same direction to form a disk body. The clockwork spring includes a first end and a second end disposed along its extending direction. The first end is located at the central part of the disk body and is connected to the rotating shaft, and the second end is located at the periphery of the disk body and is in abutting cooperation with the inner wall of the mounting shell.

[0011] In one of the embodiments, the inner wall of the mounting shell is provided with a plurality of first slots sequentially arranged along the circumferential direction thereof, and the second end is provided with a first clamping portion capable of being clamped into any one of the first slots.

[0012] In one embodiment, the mainspring includes an elastic sheet, the first clamping portion is formed by winding the second end and is arranged in a columnar shape; the inner wall of the mounting shell is provided with a plurality of clamping blocks arranged in sequence along its circumferential direction, and any two adjacent clamping blocks cooperate with the inner wall of the mounting shell to form the first clamping groove.

[0013] In one embodiment, the first end is provided with a second clamping portion, the rotating shaft is provided with a second clamping groove, and the second clamping portion is clamped and installed in the second clamping groove; the extension direction of the second clamping groove is parallel to the axial direction of the rotating shaft.

[0014] In one embodiment, the mounting shell includes a main box with an opening and a cover plate detachably connected to the main box and arranged at the opening; the mainspring can pass through the opening and be installed inside the main box; the first axial hole is formed on the cover plate, and a second axial hole corresponding to the position of the rotating shaft is formed on the main box, and the rotating shaft can also be rotatably passed through the second axial hole.

[0015] In one embodiment, the main box and the cover plate are connected by matching first positioning holes and first positioning protrusions, one of the first positioning hole and the first positioning protrusion is arranged on the end surface of the main box where the opening is formed, and the other of the first positioning hole and the first positioning protrusion is arranged on the cover plate; and / or, a recessed groove is formed at the opening of the main box, and the cover plate is provided with a boss that is snap-fitted with the recessed groove, and the boss abuts against the axial end surface of the spring.

[0016] In one of the embodiments, the rotating shaft includes an isolation shaft segment; two axial ends of the isolation shaft segment are respectively abutted against the winding wheel and the cover plate.

[0017] In one embodiment, the winding wheel includes a winding portion and a first baffle and a second baffle respectively located on opposite sides of the winding portion in the axial direction; the first baffle is provided with at least one knotting hole for knotting and fixing the suture thread, and / or the second baffle is abutted against the axial end face of the isolation shaft segment facing away from the mounting shell.

[0018] A medical suturing device comprises a suturing needle and a medical suturing thread tensioning assembly. The suturing needle is provided with a thread passing hole, and the medical suturing thread tensioning assembly is used for tensioning the suturing thread passing through the thread passing hole.

[0019] In the above-mentioned medical suture device and medical suture tensioning assembly, when the winding wheel of the medical suture tensioning assembly rotates and unwinds, the more turns the winding wheel makes, the more the suture loosens. At the same time, since the winding wheel can synchronously drive the rotation of the rotating shaft, the rotating shaft drives the clockwork to curl and tighten for energy storage or rebound and exert force accordingly. During the process of the clockwork rotating and tightening along with the rotating shaft, it can increase the tension of the suture, which is beneficial to keep the suture in a straight and taut state, thereby preventing defects such as the suture being staggered, entangled or knotted, improving safety and the success rate of the operation. Description of the Drawings

[0020] Figure 1 It is a structural diagram of a medical suture tensioning assembly according to an embodiment of the present application.

[0021] Figure 2 It is Figure 1 An exploded structural diagram of the shown structure.

[0022] Figure 3 It is a structural diagram of a clockwork according to an embodiment of the present application.

[0023] Figure 4 It is Figure 2 A perspective structural diagram of the main body box in the shown structure.

[0024] Figure 5 It is Figure 2 Another perspective structural diagram of the main body box in the shown structure.

[0025] Figure 6 It is a structural diagram of a cover plate according to an embodiment of the present application.

[0026] Figure 7 It is another perspective structural diagram of a cover plate according to an embodiment of the present application.

[0027] Figure 8 It is a structural diagram of a rotating shaft according to an embodiment of the present application.

[0028] Figure 9 It is another perspective structural diagram of a rotating shaft according to an embodiment of the present application.

[0029] 10. Mounting shell; 11. Main body box; 111. Second shaft hole; 112. First card slot; 113. Clamping block; 114. First positioning hole; 115. Sunk groove; 116. Second positioning protrusion; 117. Third flange; 12. Cover plate; 121. First shaft hole; 122. First positioning protrusion; 123. Boss; 124. First flange; 20. Spring; 21. First end; 22. Second end; 30. Rotating shaft; 31. First shaft section; 32. Isolation shaft section; 33. Second shaft section; 331. Second card slot; 34. Third shaft section; 40. Winding wheel; 401. Through hole; 41. Winding part; 42. First stop disc; 421. Knotting hole; 422. Second flange; 43. Second stop disc. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0031] Refer to Figures 1 to 4 , Figure 1 which shows the structural diagram of a medical suture tensioning assembly according to an embodiment of the present application. Figure 2 Shows Figure 1 the exploded structural diagram of the structure shown. Figure 3 which shows the structural diagram of a spring 20 according to an embodiment of the present application. Figure 4 Shows Figure 2 a perspective structural diagram of the main body box 11 in the structure shown. A medical suture tensioning assembly provided by an embodiment of the present application includes: a mounting shell 10, a spring 20, a rotating shaft 30, and a winding wheel 40. The mounting shell 10 is provided with a first shaft hole 121. The rotating shaft 30 is rotatably disposed in the first shaft hole 121. The winding wheel 40 is circumferentially and limit-connected to the rotating shaft 30, so that when the winding wheel 40 rotates to unwind the suture, the rotating shaft 30 can be driven to rotate synchronously. The spring 20 is disposed inside the mounting shell 10 and is connected to the rotating shaft 30. The spring 20 adaptively tightens when the winding wheel 40 rotates to unwind the suture.

[0032] Regarding the above-mentioned medical suture tensioning assembly, when the winding wheel 40 of the medical suture tensioning assembly rotates and unwinds, the more turns the winding wheel 40 makes, the more the suture loosens. At the same time, since the winding wheel 40 can synchronously drive the rotation of the rotating shaft 30, the rotating shaft 30 correspondingly drives the spring 20 to curl, tighten, store energy or rebound and exert force. During the process of the spring 20 rotating and tightening along with the rotating shaft 30, it can increase the tension of the suture, which is beneficial to keeping the suture in a straight and taut state, thereby preventing defects such as the suture being staggered, entangled or knotted, improving safety and the success rate of the operation.

[0033] It should be noted that during the unwinding process, the spring and the suture exert rotational torques in opposite directions on the winding wheel. The "adaptive" in the above description means that if the tightness of the suture changes, it means that the rotational torque exerted by the suture on the winding wheel changes. The spring will change the degree of its own tightening deformation or other ways according to the rotational torque exerted by the suture on the winding wheel, so that the rotational torque of the spring on the winding wheel changes correspondingly to offset the rotational torque exerted by the spring on the winding wheel.

[0034] Please refer to Figures 2 to 4 , in one embodiment, the spring 20 is wound in the same direction to form a disk body. The spring 20 includes a first end 21 and a second end 22 arranged along its extending direction. The first end 21 is located at the central part of the disk body and is connected to the rotating shaft 30, and the second end 22 is located at the periphery of the disk body and is in abutting and cooperating connection with the inner wall of the mounting shell 10. In this way, when the winding wheel 40 rotates and unwinds, it synchronously drives the rotation of the rotating shaft 30, and the rotating shaft 30 correspondingly drives the first end 21 to move, thereby realizing the tightening of the spring 20. In addition, after the spring 20 is tightened to a certain extent, when the resistance between the second end 22 and the inner wall of the mounting shell 10 is less than the tension of the spring 20, the second end 22 of the spring 20 slides relative to the inner wall of the mounting shell 10, so as to avoid excessive tension of the suture.

[0035] In one embodiment, a plurality of first clamping grooves 112 are arranged in sequence along the circumferential direction on the inner wall of the mounting shell 10. The second end 22 is provided with a first clamping portion that can be clamped into any one of the first clamping grooves 112. In this way, when the number of turns of the winding wheel 40 is too large and the spring 20 is too tight, the first clamping portion of the spring 20 slips out of one first clamping groove 112 and moves along the rotation direction of the winding wheel 40 into the next first clamping groove 112.

[0036] In some embodiments, the contour of the inner wall of the mounting shell 10 along its circumferential direction includes, but is not limited to, being circular or elliptical, etc. That is, the inner wall of the mounting shell 10 is provided as a circumferential inner wall surface or an elliptical circumferential inner wall surface. In this way, when the number of turns of the winding wheel 40 is too large and the spring 20 is too tight, the second end 22 of the spring 20 slides relative to the circumferential inner wall surface or the elliptical circumferential inner wall surface, and the movement is relatively smooth and stable, which can avoid the defect of jamming. Of course, the contour of the inner wall of the mounting shell 10 along its circumferential direction can also be, for example, a polygon, such as a square, a pentagon or a hexagon, etc.

[0037] In one embodiment, the spring 20 includes an elastic sheet, and the first clamping portion is formed by winding the second end 22 and is provided in a columnar shape. A plurality of clamping blocks 113 are arranged in sequence along the circumferential direction of the inner wall of the mounting shell 10, and any two adjacent clamping blocks 113 and the inner wall of the mounting shell 10 cooperate to form a first clamping groove 112. In this way, the first clamping portion is in a columnar shape. After being inserted into the first clamping groove 112, the first clamping portion has a relatively long region in contact with the inner wall of the mounting shell 10 along the axial direction of the rotating shaft 30, so as to improve the tension and stability.

[0038] On the basis of the foregoing embodiments, the cross-sectional contour of the first clamping portion perpendicular to the winding direction includes, but is not limited to, regular shapes such as circular and elliptical, or other irregular shapes.

[0039] Of course, in some alternative solutions, the spring 20 is not limited to being an elastic sheet, and can also be, for example, an elastic wire or an elastic strip, etc., and can be specifically adjusted and set flexibly according to actual needs, and will not be limited here.

[0040] Please refer to Figure 2 、 Figure 3 、 Figure 8 and Figure 9 , in some embodiments, the first end 21 includes, but is not limited to, being clamped and installed on the rotating shaft 30. Specifically, the first end 21 is provided with a second clamping portion, and the rotating shaft 30 is provided with a second clamping groove 331, and the second clamping portion is clamped and installed in the second clamping groove 331. In this way, it is convenient for the disassembly and assembly operations of the rotating shaft 30, the spring 20 and the mounting shell 10. The extending direction of the second clamping groove 331 is parallel to the axial direction of the rotating shaft 30. During the installation operation, when the rotating shaft 30 is inserted into the mounting shell 10 through the first shaft hole 121, it can be smoothly clamped and connected with the second clamping portion at the same time; conversely, during the disassembly operation, when the rotating shaft 30 is pulled out from the first shaft hole 121, the second clamping portion can be separated from the second clamping groove 331.

[0041] Of course, in some alternative solutions, the first end 21 is not limited to being mounted on the rotating shaft 30 by snap connection, and may also be connected and fixed to the rotating shaft 30 by fasteners such as pins, rivets, screws, bolts, etc., which can be specifically set according to actual requirements.

[0042] Please refer to Figure 2 , Figures 4 to 7 , in one embodiment, the mounting case 10 includes a main body box 11 having an opening formed therein and a cover plate 12 detachably connected to the main body box 11 and disposed at the opening. The mainspring 20 can pass through the opening and be mounted inside the main body box 11. A first shaft hole 121 is formed in the cover plate 12, and a second shaft hole 111 corresponding to the position of the rotating shaft 30 is formed in the main body box 11. The rotating shaft 30 is also rotatably passed through the second shaft hole 111. Thus, since the rotating shaft 30 is respectively passed through the first shaft hole 121 and the second shaft hole 111, that is, supported by the cover plate 12 and the main body box 11 respectively, it can rotate more stably.

[0043] In one embodiment, the main body box 11 and the cover plate 12 are connected by a mating first positioning hole 114 and a first positioning protrusion 122. One of the first positioning hole 114 and the first positioning protrusion 122 is disposed on the end face of the main body box 11 where the opening is formed, and the other of the first positioning hole 114 and the first positioning protrusion 122 is disposed on the cover plate 12. Thus, the first positioning protrusion 122 is correspondingly snap-fitted into the first positioning hole 114, so that it can be stably mounted on the main body box 11.

[0044] In one embodiment, a counterbore 115 is formed at the opening of the main body box 11, and the cover plate 12 is provided with a boss 123 that is snap-fitted with the counterbore 115, so that the cover plate 12 can be stably mounted on the main body box 11. In addition, the boss 123 abuts against the axial end face of the mainspring 20, playing a limiting role on the mainspring 20, thereby preventing the mainspring 20 from popping outwards.

[0045] In one embodiment, the rotating shaft 30 includes an isolation shaft section 32. The axial two ends of the isolation shaft section 32 respectively abut against the winding wheel 40 and the cover plate 12. Thus, the isolation shaft section 32 can make a gap be formed between the cover plate 12 and the winding wheel 40, thereby preventing the winding wheel 40 and the cover plate 12 from contacting and rubbing against each other.

[0046] In some embodiments, a first flange 124 circumferentially disposed around the first shaft hole 121 is provided on the outer surface of the cover plate 12. The first flange 124 abuts against the axial end face of the isolation shaft section 32. Thus, the distance between the outer surface of the cover plate 12 and the axial end face of the winding wheel 40 can be further increased, effectively preventing the two from contacting each other.

[0047] Please refer to Figure 2In some embodiments, the rotating shaft 30 further includes a first shaft section 31. The first shaft section 31 is connected to the isolation shaft section 32. The winding wheel 40 is provided with a through hole 401, and the first shaft section 31 is inserted into the through hole 401. When the first shaft section 31 rotates, it can synchronously drive the winding wheel 40 to rotate. Specifically, the through hole 401 includes but is not limited to a non-circular hole, such as a regular shape such as an oblate, elliptical or polygonal shape and other irregular shapes, and the first shaft section 31 is adapted to the outer contour of the through hole 401.

[0048] Optionally, during assembly, the first shaft segment 31 passes through the through hole 401 of the winding wheel 40, and the end of the first shaft segment 31 also extends outward through the shaft hole of one of the side walls of the shell and docks with a knob located outside the shell. When the knob is rotated, it can drive the rotating shaft 30 to rotate, thereby increasing the tension of the suture line.

[0049] In some embodiments, the rotating shaft 30 further includes a second shaft section 33 and a third shaft section 34. The first shaft section 31, the isolation shaft section 32, the second shaft section 33 and the third shaft section 34 are coaxially connected in sequence. The second shaft section 33 is rotatably inserted into the first shaft hole 121 and supported by the cover plate 12; the third shaft section 34 is rotatably inserted into the second shaft hole 111 and supported by the main box 11; in addition, the third shaft section 34 can also be rotatably inserted into the shaft hole of the other side wall of the shell and supported by the shell.

[0050] Specifically, the second slot 331 is formed on the second shaft segment 33. Optionally, the outer diameter of the isolation shaft segment 32 is larger than the outer diameter of the first shaft segment 31 and the outer diameter of the second shaft segment 33, so that a step is formed with the first shaft segment 31 to limit the winding wheel 40; and a step is formed with the second shaft segment 33 to limit the mounting shell 10.

[0051] In one embodiment, the winding wheel 40 includes a winding portion 41 and a first baffle 42 and a second baffle 43 respectively located on opposite sides of the winding portion 41 in the axial direction. The first baffle 42 is provided with at least one knotting hole 421 for knotting and fixing the suture thread. In addition, the second baffle 43 is abutted against the axial end surface of the isolation shaft section 32 away from the mounting shell 10.

[0052] In some embodiments, a second flange 422 is provided on the end surface of the first baffle 42 away from the isolation shaft section 32. The second flange 422 is passed through the shaft hole of one side wall of the housing, so that the housing supports the rotating shaft 30.

[0053] In some embodiments, at least one second positioning protrusion 116 is provided on the end of the main box 11 facing away from the cover plate 12. A second positioning hole corresponding to the second positioning protrusion 116 is provided on the outer shell. The second positioning protrusion 116 is snap-fitted and installed in the second positioning hole. In addition, a third flange 117 circumferentially arranged around the second axial hole 111 is also provided on the end of the main box 11 facing away from the cover plate 12, and a third slot corresponding to the third flange 117 is provided on the outer shell, and the third flange 117 is snap-fitted and installed in the third slot, so that the main box 11 is fixedly installed on the outer shell.

[0054] See also Figures 1 to 4 In one embodiment, a medical suturing device includes a suturing needle and a medical suturing thread tensioning assembly of any of the above embodiments. In addition, a thread passing hole is provided on the suturing needle, and the medical suturing thread tensioning assembly is used to tension the suturing thread passing through the thread passing hole.

[0055] In the above-mentioned medical suturing device, when the winding wheel 40 of the medical suture tensioning assembly rotates to unwind, the more the winding wheel 40 rotates, the more the suture is loosened. At the same time, since the winding wheel 40 can synchronously drive the rotating shaft 30 to rotate, the rotating shaft 30 correspondingly drives the mainspring 20 to curl and tighten to store force or rebound to generate force. During the process of rotating and tightening with the rotating shaft 30, the mainspring 20 can increase the tensioning force of the suture, which can help to make the suture in a straightened and tensioned state, thereby preventing the occurrence of undesirable defects such as suture interlacing, entanglement or knotting, thereby improving safety and the success rate of surgery.

[0056] It should be noted that the related technology in the background technology of this application is only for the convenience of explaining the technical problems to be solved by this application, and the related technology does not necessarily belong to the existing technology.

[0057] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In this application, unless otherwise clearly defined and limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0060] The above-described embodiments only represent several implementation manners of this application, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application patent shall be subject to the appended claims.

Claims

1. A medical suture tensioning assembly, characterized in that: The suture tensioning assembly comprises: A mounting shell, wherein the mounting shell is provided with a first axial hole; A rotating shaft, the rotating shaft is rotatably disposed in the first shaft hole; A winding wheel, wherein the winding wheel is connected to the rotating shaft in a circumferential limit position, and when the winding wheel rotates to unwind the suture thread, it can synchronously drive the rotating shaft to rotate; and A mainspring is arranged inside the mounting shell and connected to the rotating shaft. The mainspring is adaptively tightened when the winding wheel rotates to unwind the suture thread.

2. The medical suture tensioning assembly according to claim 1, characterized in that: The mainspring is wound in the same direction to form a disk body, and the mainspring includes a first end and a second end arranged along its extension direction, the first end is located at the center of the disk body and is connected to the rotating shaft, and the second end is located at the periphery of the disk body and abuts against the inner wall of the mounting shell.

3. The medical suture tensioning assembly according to claim 2, characterized in that: The inner wall of the mounting shell is provided with a plurality of first card slots sequentially arranged along the circumferential direction thereof, and the second end is provided with a first card connection portion capable of being inserted into any one of the first card slots.

4. The medical suture tensioning assembly according to claim 3, characterized in that: The mainspring includes an elastic sheet, and the first clamping portion is formed by winding the second end and is arranged in a columnar shape; the inner wall of the mounting shell is provided with a plurality of clamping blocks arranged in sequence along its circumferential direction, and any two adjacent clamping blocks cooperate with the inner wall of the mounting shell to form the first clamping groove.

5. The medical suture tensioning assembly according to claim 2, characterized in that: The first end is provided with a second clamping portion, the rotating shaft is provided with a second clamping groove, and the second clamping portion is clamped and installed in the second clamping groove; the extension direction of the second clamping groove is parallel to the axial direction of the rotating shaft.

6. The medical suture tensioning assembly according to claim 1, characterized in that: The mounting shell includes a main box with an opening and a cover plate detachably connected to the main box and arranged at the opening; the mainspring can pass through the opening and be installed inside the main box; the first axial hole is formed on the cover plate, and a second axial hole corresponding to the position of the rotating shaft is formed on the main box, and the rotating shaft can also be rotatably passed through the second axial hole.

7. The medical suture tensioning assembly according to claim 6, characterized in that: The main box and the cover plate are connected by matching first positioning holes and first positioning protrusions, one of the first positioning hole and the first positioning protrusion is arranged on the end surface of the main box where the opening is formed, and the other of the first positioning hole and the first positioning protrusion is arranged on the cover plate; and / or, a recessed groove is formed at the opening of the main box, and the cover plate is provided with a boss that is snap-fitted with the recessed groove, and the boss abuts against the axial end surface of the spring.

8. The medical suture tensioning assembly according to claim 6, characterized in that: The rotating shaft comprises an isolating shaft section; two axial ends of the isolating shaft section are respectively abutted and matched with the winding wheel and the cover plate.

9. The medical suture tensioning assembly according to claim 8, characterized in that: The winding wheel includes a winding portion and a first baffle and a second baffle located on opposite sides of the winding portion in the axial direction; the first baffle is provided with at least one knotting hole for knotting and fixing the suture thread, and / or the second baffle is abutted against the axial end face of the isolation shaft segment facing away from the mounting shell.

10. A medical suturing device, characterized in that: The medical suturing device comprises a suturing needle and a medical suture thread tensioning assembly as claimed in any one of claims 1 to 9, wherein the suturing needle is provided with a thread passing hole, and the medical suture thread tensioning assembly is used for tensioning the suture thread passing through the thread passing hole.

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