Knot-pushing thread trimmer
By designing the suture guide slot and protrusion structure of the push-knot suture cutter, combined with the tight engagement of the shearing outer tube and inner core rod, the problem of difficulty in traditional manual suture threading is solved, enabling rapid suture introduction and thorough cutting, thus improving surgical efficiency and safety.
Patent Information
- Application Number
- CN202422932713.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In traditional endoscopic surgeries of various systems throughout the body, manual suture threading is difficult and inefficient, affecting the surgical process and increasing risks.
Design a push-knot suture cutter comprising a suture cutting assembly and a push-knot assembly, which quickly introduces the suture through a lead-in slot and a protrusion structure, and achieves thorough cutting by utilizing the tight engagement of the shearing outer tube and the inner core rod.
It improves the speed of suture introduction, ensures thorough cutting, simplifies the surgical procedure, and reduces the workload of doctors and the operation time.
Smart Images
Figure CN223845702U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially is related to a push knot and cut line device. BACKGROUND
[0002] The push knot and cut line device is a kind of medical instrument.Currently, in all systems endoscope, arthroscopy function is most comprehensive and is most widely used, surgery is usually completed in smaller, flexible, remote channel, such as meniscus suture, is used to push knot and tighten suture after implant release, to close wound and cut the excess suture, that is, using push knot and cut line device to push knot and cut line.The traditional incision is closed hole, and it is difficult to thread manually during surgery, and the threading efficiency is low, which affects the surgical process and increases the risk of surgery. SUMMARY
[0003] In order to solve the existing problems, the utility model provides a push knot and cut line device.
[0004] In order to realize the utility model's purpose, the utility model adopts the following technical scheme:
[0005] A push knot and cut line device, including cut line assembly, push knot assembly, handle and tail cap, push knot assembly installs handle inside, tail cap is installed in handle tail, cut line assembly includes shearing inner core rod and shearing outer sleeve tube, shearing outer sleeve tube is movably sleeved on the outside of shearing inner core rod;Shearing outer sleeve tube one end extends to handle inside and is connected with push knot assembly;Shearing inner core rod one end passes through push knot assembly and extends to handle inside and is connected with tail cap one end;The end of shearing inner core rod away from tail cap is equipped with lead opening slot, and the side of lead opening slot is also equipped with convex part, suture passes through lead opening slot and extends to the close contact with convex part;The end of shearing outer sleeve tube away from handle is equipped with shearing blade;Push knot assembly drives shearing outer sleeve tube to be close to convex part and cut suture.
[0006] Based on the above technical scheme, further, the end of handle away from the tail cap is equipped with limit slot, and push knot assembly moves in limit slot.
[0007] Based on the above technical scheme, further, the push knot assembly includes push cover and push block, push cover is installed on the upper end surface of push block, and push cover moves in limit slot.
[0008] Based on the above technical scheme, further, the bottom of the inner wall of handle directly below limit slot is equipped with sliding groove, and the bottom of push block is located in sliding groove, and push block is slid on sliding groove by driving push cover.
[0009] Based on the above technical scheme, further, one end of push block is connected with shearing outer sleeve tube extending to handle inside.
[0010] Further based on the technical scheme, one end of the tail cap is provided with a clamping protrusion, and the end of the handle is provided with a limiting opening; when the clamping protrusion moves to the position of the limiting opening, the clamping protrusion protrudes from the limiting opening to the outside of the handle.
[0011] Further based on the technical scheme, the end of the handle away from the tail cap is provided with a guide portion, and the guide portion is in communication with the internal hollow cavity of the handle.
[0012] Further based on the technical scheme, the shearing outer sleeve extends into the cavity in the interior of the handle through the guide portion.
[0013] Further based on the technical scheme, three limiting holes are arranged at the position of the handle corresponding to the bottom of the limiting groove, and are respectively a first limiting hole, a second limiting hole and a third limiting hole; the second limiting hole is between the first limiting hole and the second limiting hole, the first limiting hole is arranged close to the tail cap, and the third limiting hole is arranged away from the tail cap.
[0014] Further based on the technical scheme, at least one clamping protrusion is arranged on the shearing outer sleeve, and the clamping protrusion is matched with the three limiting holes during the pushing process.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] (1) When the structure of the utility model is used for shearing operation, the suture is inserted into the shearing inner core rod from the wire leading opening groove away from the tail cap, introduced along the direction close to the tail cap until the convex portion position, then the suture is introduced close to the outer wall of the convex portion, until the suture is completely matched with all the outer walls of the convex portion, the shearing outer sleeve is pushed to make the shearing blade of the end gradually close to the suture, until the suture is sheared completely. The wire leading opening groove and the convex portion can quickly introduce the suture, speed up the wire leading operation time, and improve the efficiency in the operation process.
[0017] (2) The shearing outer sleeve and the shearing inner core rod in the shearing assembly are closely matched, the shearing outer sleeve, the shearing inner core rod and the shearing blade are closely engaged, and the suture is completely sheared, and the phenomenon of incomplete shearing does not occur. Moreover, the two processes of knot pushing and suture shearing are unified, the suture can be reliably sheared, the suture is completely sheared, the shearing quality is stable, the two processes of knot pushing and suture shearing are integrated into one device structure, time is saved, the process is simplified, and the labor intensity and the operation complexity of doctors are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is an explosion view of the overall structure of the utility model;
[0019] Figure 2Another perspective structure explosion map of the utility model;
[0020] Figure 3 For Figure 2 The structure of the middle A is enlarged;
[0021] Figure 4 For Figure 2 The structure of the middle B is enlarged;
[0022] Figure 5 For Figure 1 The structure of the middle C is enlarged;
[0023] The figure mark: 1, handle, 2, shearing outer sleeve, 3, shearing inner core rod, 4, push cap, 5, push block, 6, sliding slot, 7, tail cap, 8, clamping convex position, 9, limit mouth, 10, guide part, 11, limit slot, 12, first limit hole, 13, second limit hole, 14, third limit hole, 15, shearing blade, 16, lead opening slot, 17, convex part. DETAILED DESCRIPTION
[0024] The utility model will be further described and explained in combination with the drawings and specific embodiments. The technical features of each embodiment in the utility model can be combined without conflict.
[0025] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments. The technical features in each embodiment of the utility model can be combined without conflict.
[0026] In the description of the utility model, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected, that is, there is a middle element. Conversely, when the element is referred to as "directly" connected to another element, there is no intermediate element.
[0027] In the description of the utility model, it should be understood that the terms "first", "second" are only used for distinguishing description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.
[0028] EMBODIMENT
[0029] Combining Figures 1-5 As shown in the drawings, the embodiment provides a knot pusher and cutter, which comprises a cutting assembly, a knot pushing assembly, a handle 1 and a tail cap 7, wherein the knot pushing assembly is installed inside the handle 1, the tail cap 7 is installed at the tail of the handle 1, and the cutting assembly comprises a cutting inner core rod 3 and a cutting outer sleeve 2, the cutting outer sleeve 2 movably sheaths outside the cutting inner core rod 3, and one end of the cutting outer sleeve 2 extends to the inside of the handle 1 and is connected with the knot pushing assembly; one end of the cutting inner core rod 3 extends to the inside of the handle 1 through the cutting outer sleeve 2 and the knot pushing assembly and is connected with one end of the tail cap 7. In some embodiments, the cutting outer sleeve 2 is a hollow sleeve structure, and a cutting edge 15 is arranged at the end of the cutting outer sleeve 2 away from the handle 1, and the shape of the cutting edge 15 includes but is not limited to a U-shaped opening facing away from the tail cap 7, a V-shaped opening facing away from the tail cap 7, etc., wherein the cutting edge 15 can be made of 108Cr17 material, and is not prone to passivation after multiple cutting operations, and the sharpness of the cutting edge 15 is still guaranteed after multiple cutting operations. Correspondingly, in some embodiments, one end of the cutting inner core rod 3 away from the tail cap 7 is provided with a lead opening slot 16, and a protrusion 17 is additionally arranged on one side of the lead opening slot 16, and the shape of the protrusion 17 includes but is not limited to a U-shaped end facing the tail cap 7, a V-shaped end facing the tail cap 7, etc., and the shape of the protrusion 17 matches the shape of the cutting edge 15, when the cutting operation is performed, the suture is inserted from one end of the lead opening slot 16 of the cutting inner core rod 3 away from the tail cap 7, introduced along the direction close to the tail cap 7 until reaching the position of the protrusion 17, and then the suture is introduced close to the outer wall of the protrusion 17 until the suture completely matches all the outer walls of the protrusion 17, and then the cutting outer sleeve 2 is pushed so that the cutting edge 15 at the end of the cutting outer sleeve 2 gradually approaches the suture until the suture is cut. By arranging the lead opening slot 16 and the protrusion 17, the suture can be quickly introduced, the lead operation time is accelerated, and the efficiency in the operation process is improved.
[0030] Specifically, in this embodiment, the handle 1 end away from the tail cap 7 is provided with a limiting groove 11, and the limiting groove 11 is used to limit the movement range of the push knot assembly. The bottom of the limiting groove 11 is provided with three limiting holes corresponding to the position of the handle 1, which are respectively a first limiting hole 12, a second limiting hole 13 and a third limiting hole 14. It should be noted that the second limiting hole 13 is located between the first limiting hole 12 and the second limiting hole 13, and the interval between the adjacent two limiting holes is set according to the actual situation. The first limiting hole 12 is located near the tail cap 7, and the third limiting hole 14 is located away from the tail cap 7. At the same time, the first limiting hole 12, the second limiting hole 13 and the third limiting hole 14 are arranged along the axis direction of the handle 1 and located on the same horizontal line. Further, in some embodiments, the connection mode of the tail cap 7 and the end of the handle 1 can adopt threaded connection, for example, the tail cap 7 is provided with external thread structure, and the inner wall of the end of the handle 1 is provided with internal thread structure, and the threaded connection is realized by the cooperation of the external thread and the internal thread. In another embodiment, one end of the tail cap 7 is provided with a clamping convex position 8 and a plurality of protrusions. Correspondingly, the inner wall of the end of the handle 1 is provided with a groove matched with the protrusion. The protrusion is pushed into the end of the handle 1 through the groove, and the end of the handle 1 is provided with a limiting port 9. When the clamping convex position 8 moves to the position of the limiting port 9, the clamping convex position 8 protrudes from the limiting port 9 to the outside of the handle 1, and the movement stops. At this time, the handle 1 and the tail cap 7 are installed. When disassembling the tail cap 7, press the clamping convex position 8 protruding to the outside of the handle 1 and then pull it away from the handle 1 in the direction away from the handle 1 until the tail cap 7 is separated from the inner wall of the end of the handle 1. It should be noted that the tail cap 7 not only plays a role in sealing the port of the handle 1, but also plays a role in pushing the shearing inner core rod 3 into the handle 1 and the shearing outer sleeve 2. The clamping convex position 8 has softness and elasticity, which enters the inside of the handle 1 through friction until the clamping convex position 8 moves to the position of the limiting port 9 and protrudes.
[0031] Further, the end of the handle 1 away from the tail cap 7 can also be provided with a guide portion 10. The guide portion 10 is a hollow structure, which communicates with the internal hollow cavity of the handle 1. It should be noted that the setting of the guide portion 10 facilitates guiding the shearing outer sleeve 2 to directly pass through the guide portion 10 and extend into the cavity in the inside of the handle 1, so that the installation is more convenient.
[0032] In this embodiment, the pushing knot assembly includes a pushing cap 4 and a pushing block 5, the pushing cap 4 is connected with the upper end surface of the pushing block 5, the limiting slot 11 on the handle 1 is opposite to the inner wall of the handle 1 below and is provided with a sliding groove 6, the bottom of the pushing block 5 is located in the sliding groove 6, and the pushing cap 4 can drive the pushing block 5 to slide on the sliding groove 6. It should be noted that the sliding groove 6 can be rectangular in shape, so that when the pushing cap 4 moves the pushing block 5 along the sliding groove 6, it can drive the cutting assembly to move linearly. One end of the pushing block 5 is connected with the shearing outer sleeve tube 2 extending into the handle 1, and the shearing inner core rod 3 extends into the cavity of the handle 1 through the shearing outer sleeve tube 2 and the pushing block 5 and is connected with one end of the tail cap 7.
[0033] The operation principle of the device is as follows:
[0034] During operation, the pushing cap 4 on the pushing block 5 installed in the sliding groove 6 in the handle 1 is pushed to drive the shearing outer sleeve tube 2 connected with the pushing block 5 to move away from or close to the position of the suture; it should be noted that the first limiting hole 12, the second limiting hole 13 and the third limiting hole 14 are arranged at the bottom of the sliding groove 6, wherein when one end of the shearing outer sleeve tube 2 is located at the position corresponding to the second limiting hole 13, the tail end of the suture can be introduced into the position of the convex part 17 through the head lead opening slot 16 of the shearing inner core rod 3, the shearing outer sleeve tube 2 is pushed forward to the position corresponding to the third limiting hole 14, at this time the shearing blade 15 gradually approaches and performs shearing action on the suture close to the convex part 17, and after shearing is completed, one end of the shearing outer sleeve tube 2 is pushed backward until it is located at the position corresponding to the first limiting hole 12, at this time one end of the shearing outer sleeve tube 2 provided with the shearing blade 15 is away from one end of the shearing inner core rod 3 provided with the convex part 17. Further, the shearing outer sleeve tube 2 is provided with at least one clamping protrusion, which has soft and elastic properties, and continuously moves at the positions of the first limiting hole 12, the second limiting hole 13 and the third limiting hole 14 through friction, when it moves to the corresponding limiting hole position, it protrudes to the outside of the corresponding limiting hole under its own properties, which can realize the limiting effect, but due to its own material properties, it does not affect the smooth operation of forward pushing and backward pushing.
[0035] Further, the shearing outer sleeve tube 2 and the shearing inner core rod 3 are closely fitted, which can realize the close cooperation of the shearing outer sleeve tube 2, the shearing inner core rod 3 and the shearing blade 15 in the cutting assembly, and further realize the complete shearing of the suture, without incomplete shearing phenomenon. Moreover, the device unifies the processes of pushing knot and cutting thread, can reliably cut the suture, the cutting is complete and the cutting quality is stable, and the processes of pushing knot and cutting thread are integrated into one device structure, which saves time, simplifies the process, and is more conducive to reducing the labor intensity of doctors and the complexity of surgery.
[0036] The above merely describes the implementation forms of the present application, which are relatively specific and detailed, but should not be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.
Claims
1. A knot pusher thread cutter, characterized by, The application relates to a suture cutting device which comprises a suture cutting assembly, a knot pushing assembly, a handle and a tail cap, the knot pushing assembly is arranged in the handle, the tail cap is arranged at the tail end of the handle, the suture cutting assembly comprises a suture cutting inner core rod and a suture cutting outer sleeve, the suture cutting outer sleeve is arranged outside the suture cutting inner core rod, one end of the suture cutting outer sleeve extends to the inside of the handle and is connected with the knot pushing assembly, one end of the suture cutting inner core rod extends to the inside of the handle through the knot pushing assembly and is connected with one end of the tail cap, one end of the suture cutting inner core rod away from the tail cap is provided with a lead wire opening groove, a convex part is further arranged on one side of the lead wire opening groove, a suture thread extends to the convex part through the lead wire opening groove, and a suture blade is arranged at the end of the suture cutting outer sleeve away from the handle; the knot pushing assembly is driven to drive the suture cutting outer sleeve to approach the convex part and cut the suture thread.
2. A knot pusher according to claim 1, wherein, One end of the handle away from the tail cap is provided with a limiting groove, and the knot pushing assembly moves in the limiting groove.
3. A knot pusher according to claim 2, wherein, The knot pushing assembly comprises a pushing cover and a pushing block, the pushing cover is arranged on the upper end surface of the pushing block, and the pushing cover moves in the limiting groove.
4. A knot pusher according to claim 3, wherein, The bottom of the inner wall of the handle directly below the limiting groove is provided with a sliding groove, the bottom of the pushing block is located in the sliding groove, and the pushing block is driven to slide on the sliding groove by the pushing cover.
5. A knot pusher according to claim 4, wherein, One end of the pushing block is connected with the suture cutting outer sleeve extending to the inside of the handle.
6. A knot pusher according to claim 1, wherein, One end of the tail cap is provided with a clamping convex part, and the end of the handle is provided with a limiting opening, when the clamping convex part moves to the position of the limiting opening, the clamping convex part protrudes to the outside of the handle from the limiting opening.
7. A knot pusher according to claim 1, wherein, The end of the handle away from the tail cap is provided with a guide part, and the guide part is communicated with the hollow cavity in the inside of the handle.
8. A knot pusher according to claim 7, wherein, The suture cutting outer sleeve extends to the cavity in the inside of the handle through the guide part.
9. A knot pusher according to claim 2, wherein, Three limiting holes are arranged at the position of the handle corresponding to the bottom of the limiting groove, and are respectively a first limiting hole, a second limiting hole and a third limiting hole, the second limiting hole is located between the first limiting hole and the second limiting hole, the first limiting hole is arranged at the position close to the tail cap, and the third limiting hole is arranged at the position away from the tail cap.
10. A knot pusher according to claim 9, wherein, At least one clamping convex part is arranged on the suture cutting outer sleeve, and the clamping convex part is matched with the three limiting holes during the pushing process.