Knotter capable of trimming threads

Abstract

The utility model relates to the technical field of medical instruments, in particular to a knotter capable of trimming threads, which comprises a grab handle, a knotter body, a knotter handle, a knotter handle, a knotter handle, a knotter handle, a knotter handle and a knotter handle, the grab handle is fixedly connected with a first shifting piece through a connecting rod, and a guide groove is formed in the first shifting piece; the first shifting piece is provided with a shifting assembly used for closing the guide groove to enable the guide groove to form a guide hole, and a cutting edge used for cutting a suture line. The shifting assembly comprises a rotating shaft, a shifting frame is installed on the rotating shaft, and the shifting frame can rotate through the rotating shaft to form three states through a driving component. According to the utility model, the guide groove is formed in the first plectrum, so that the first plectrum has a function of facilitating knotting of a suture line, the plectrum assembly mounted on the first plectrum can play a role in preventing the suture line from being separated from the guide groove, and meanwhile, the first plectrum also has a function of shearing the suture line through the matching of the cutting edge.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a knotter capable of cutting wires. Background Art

[0002] At present, it is difficult to tie knots in deep tissue surgeries in the human body during medical operations. In order to prevent the ligature from loosening, a knotter is needed to push the knot to move. Existing knotters generally push the knot to move by opening a U-shaped groove at the end. However, after the knot is tied, other auxiliary tools are needed to cut the sutures. However, in minimally invasive surgery, it is inconvenient to change instruments because the incision is small. Therefore, we provide a knotter that can cut the thread to solve the problem that other auxiliary tools are needed to cut the knot after the knotter is pushed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a knotter capable of cutting threads, which has the advantage of being convenient for cutting threads after knotting.

[0004] The utility model provides a knotter capable of cutting threads, comprising:

[0005] A handle, wherein the handle is fixedly connected to a first paddle via a connecting rod, and a guide groove is provided on the first paddle;

[0006] The first paddle is provided with a paddle assembly for closing the guide groove to form a guide hole, and a cutting blade for cutting the suture line;

[0007] The toggle assembly includes a rotating shaft, a toggle frame is mounted on the rotating shaft, and the toggle frame can be rotated by the rotating shaft through a driving component to form three states;

[0008] State 1 is an initial state when the rotating shaft is not rotating;

[0009] State 2, the toggle frame is rotated to cover the guide groove laterally, so that a guide hole is formed inside the guide groove and the toggle frame;

[0010] In state three, the toggle frame further contracts the guide hole and rotates to cross the guide groove. At this time, the suture thread is bent and moved on the first toggle piece under the toggle of the toggle frame until it is cut by the cutting blade.

[0011] In some embodiments, the end of the first paddle includes a circular mounting area, and an end of the circular mounting area close to the handle is fixedly connected to the connecting rod through a connecting area;

[0012] The rotating shaft is installed at the center of the circular installation area, and the shifting frame includes an arc-shaped shifting rod smaller than the radius of the circular installation area, and the arc-shaped shifting rod is fixedly connected to the rotating shaft through a rotating rod;

[0013] The chord length of the arc-shaped lever is greater than the width of the guide groove.

[0014] In some embodiments, the cutting blade is located on the radius of the circular mounting area, and the opening direction of the cutting blade is arranged toward the bend of the suture line.

[0015] In some embodiments, a limiting groove is provided on the rotating rod for preventing the suture thread from sliding left and right on the rotating rod, and an arc-shaped guiding portion is provided between one end of the limiting groove close to the arc-shaped lever and the inner wall of the arc-shaped lever.

[0016] In some embodiments, the rotating rod and the arc-shaped guide portion are provided with mating holes for the cutting blade to mate with.

[0017] In some embodiments, a second paddle that is identical to the first paddle is also included. The second paddle covers the first paddle and forms an installation cavity with the first paddle for installing a limit-limiting paddle assembly and a cutting blade.

[0018] In some embodiments, the driving component includes a gear fixedly mounted on the surface of a rotating shaft, a synchronous belt is wound around the surface of the gear, the synchronous belt movably passes through a connecting rod and is installed inside a handle, a sliding groove is provided on the handle, a sliding block is slidably connected inside the sliding groove, the sliding block is connected to the synchronous belt, three card slots corresponding to the three states of the toggle assembly are provided on the side of the sliding groove, and a card block matching the card slot is slidably connected to the sliding block.

[0019] In some embodiments, the driving component includes a micro motor for transmission connection with the rotating shaft.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] 1. The utility model can provide a guide groove on the first paddle to facilitate tying of sutures. The paddle assembly installed on the first paddle can prevent the sutures from escaping from the guide groove, and can also shear the sutures through the cooperation of the cutting blade.

[0022] 2. The utility model can change the bending length of the suture thread by adjusting the position of the cutting blade, so that the device can also control the length of the thread end. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1This is a schematic diagram of a half-section structure of an embodiment;

[0025] Figure 2 It is a schematic diagram of a side view and a half-section structure of a first paddle and a second paddle in Embodiment 1;

[0026] Figure 3 This is a schematic diagram of the operating structure of the first embodiment;

[0027] Figure 4 It is a schematic diagram of the side view and half-section structure of the first paddle and the second paddle in the second embodiment.

[0028] In the figure: 1, handle; 2, connecting rod; 3, first paddle; 4, second paddle;

[0029] 5. toggle assembly; 51. rotating shaft; 52. toggle frame; 521. arc-shaped toggle lever; 522. rotating lever; 523. fitting hole; 53. limiting groove; 54. arc-shaped guide portion;

[0030] 6. Cutting blade; 7. Driving component; 71. Gear; 72. Synchronous belt; 73. Sliding groove; 74. Sliding block; 75. Slot; 76. Slot;

[0031] a. Circular installation area; b. Connection area; c. Guide groove. DETAILED DESCRIPTION

[0032] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0033] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] Embodiment 1:

[0035] See also Figure 1-Figure 3 The utility model of the knotter capable of cutting thread comprises: a handle 1, the handle 1 is fixedly connected to a first paddle 3 through a connecting rod 2, and a guide groove c is provided on the first paddle 3; the first paddle 3 is provided with a toggle assembly 5 for closing the guide groove c to form a guide hole, and a cutting blade 6 for cutting the suture thread; the toggle assembly 5 comprises a rotating shaft 51, a toggle frame 52 is installed on the rotating shaft 51, and the toggle frame 52 can be rotated by the rotating shaft 51 through a driving component 7 to form three states;

[0036] State 1 is an initial state when the rotating shaft 51 is not rotating. In this state, the guide groove c on the first paddle 3 is open, so that the first paddle 3 can pass through the guide groove c to facilitate knotting.

[0037] State 2: the toggle frame 52 is rotated to cover the guide groove c laterally, so that a guide hole is formed inside the guide groove c and the toggle frame 52. In this state, the suture can be limited to prevent the suture from being separated from the guide groove c during the knotting process.

[0038] In state three, the toggle frame 52 further shrinks the guide hole and rotates to cross the guide groove c. At this time, the suture thread is bent and moved on the first paddle 3 by the toggle frame 52 until it is cut by the cutting blade 6.

[0039] Among them, the end of the first paddle 3 includes a circular mounting area a, and the end of the circular mounting area a close to the handle 1 is fixedly connected to the connecting rod 2 through the connecting area b; the rotating shaft 51 is installed at the center of the circular mounting area a, and the toggle frame 52 includes an arc-shaped lever 521 with a radius smaller than the circular mounting area a, which can ensure that the movement of the toggle frame 52 is always located in the circular mounting area a of the first paddle 3, and the arc-shaped lever 521 is fixedly connected to the rotating shaft 51 through the rotating rod 522; the chord length of the arc-shaped lever 521 is greater than the width of the guide groove c, which can ensure that the guide groove c can be closed in state two.

[0040] The cutting blade 6 is located on the radius of the circular installation area a, and the opening direction of the cutting blade 6 is arranged toward the bending part of the suture line.

[0041] Among them, a limiting groove 53 is provided on the rotating rod 522 for preventing the suture thread from sliding left and right on the rotating rod 522, and an arc-shaped guiding portion 54 is provided between one end of the limiting groove 53 close to the arc-shaped lever 521 and the inner wall of the arc-shaped lever 521. The arc-shaped guiding portion 54 can facilitate the suture thread to enter the limiting groove 53, thereby preventing the suture thread from moving and ensuring the stability of the suture thread when it contacts the cutting blade 6.

[0042] The rotating rod 522 and the arc-shaped guide portion 54 are provided with a fitting hole 523 for the cutting blade 6 to fit with. The provision of the fitting hole 523 can ensure the cutting of the suture thread.

[0043] Furthermore, it also includes a second paddle 4 which is equivalent to the first paddle 3. The second paddle 4 covers the first paddle 3 and forms an installation cavity with the first paddle 3 for installing the limit-limiting toggle assembly 5 and the cutting blade 6. The setting of the second paddle 4 can cover the toggle assembly 5 to avoid exposure of the toggle assembly 5. At the same time, the setting of the second paddle 4 can also enable the device to have a hook function.

[0044] The driving component 7 includes a gear 71 fixedly sleeved on the surface of the rotating shaft 51, and a synchronous belt 72 is wound on the surface of the gear 71. The synchronous belt 72 movably passes through the connecting rod 2 and is installed inside the handle 1. A sliding groove 73 is provided on the handle 1. A sliding block 74 is slidably connected inside the sliding groove 73. The sliding block 74 is connected to the synchronous belt 72. Three card slots 75 corresponding to the three states of the toggle component 5 are provided on the side of the sliding groove 73. A card block 76 adapted to the card slot 75 is slidably connected to the sliding block 74.

[0045] The operating principle of the driving component 7 is to first disengage the card block 76 from the card slot 75 to move the sliding block 74 in the sliding slot 73. The movement of the sliding block 74 in the sliding slot 73 can move the synchronous belt 72 connected thereto. The movement of the synchronous belt 72 can cause the gear 71 to drive the rotating shaft 51 to rotate. The rotating shaft 51 can switch the wave component between state one, state two, and state three, so that the device can not only facilitate knotting, but also shear the suture.

[0046] Embodiment 2:

[0047] See also Figure 4 As a variation of the first embodiment, the difference from the first embodiment is that the driving component 7 includes a micro motor for transmission connection with the rotating shaft 51.

[0048] In the first and second embodiments, the length of the suture thread bend can be changed by adjusting the position of the cutting blade 6, so that the device can also control the length of the thread end.

[0049] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A knotter capable of cutting a thread, characterized in that: include: A handle (1), wherein the handle (1) is fixedly connected to a first paddle (3) via a connecting rod (2), and a guide groove (c) is provided on the first paddle (3); The first paddle (3) is provided with a paddle assembly (5) for closing the guide groove (c) so that the guide groove (c) forms a guide hole, and a cutting blade (6) for cutting the suture line; The toggle assembly (5) comprises a rotating shaft (51), a toggle frame (52) is mounted on the rotating shaft (51), and the toggle frame (52) can be rotated through the rotating shaft (51) to form three states through a driving component (7); State 1 is an initial state when the rotating shaft (51) is not rotating; State 2, the toggle frame (52) is rotated to cover the guide groove (c) laterally, so that a guide hole is formed inside the guide groove (c) and the toggle frame (52); In state three, the toggle frame (52) further contracts the guide hole and rotates to cross the guide groove (c). At this time, the suture thread will be bent and moved on the first paddle (3) under the toggle of the toggle frame (52) until it is cut by the cutting blade (6).

2. A thread-cutting knotter according to claim 1, characterized in that: The end of the first paddle (3) comprises a circular mounting area (a), and the end of the circular mounting area (a) close to the handle (1) is fixedly connected to the connecting rod (2) via a connecting area (b); The rotating shaft (51) is installed at the center of the circular installation area (a), and the shifting frame (52) includes an arc-shaped shifting rod (521) with a radius smaller than the circular installation area (a), and the arc-shaped shifting rod (521) is fixedly connected to the rotating shaft (51) through a rotating rod (522); The chord length of the arc-shaped lever (521) is greater than the width of the guide groove (c).

3. A knotter capable of cutting thread according to claim 2, characterized in that: The cutting blade (6) is located on the radius of the circular installation area (a), and the opening direction of the cutting blade (6) is arranged toward the bending part of the suture line.

4. A knotter capable of cutting thread according to claim 3, characterized in that: The rotating rod (522) is provided with a limiting groove (53) for preventing the suture thread from sliding left and right on the rotating rod (522), and an arc-shaped guiding portion (54) is provided between one end of the limiting groove (53) close to the arc-shaped lever (521) and the inner wall of the arc-shaped lever (521).

5. A knotter capable of cutting thread according to claim 4, characterized in that: The rotating rod (522) and the arc-shaped guide portion (54) are provided with a fitting hole (523) for the cutting blade (6) to fit into.

6. A thread-cutting knotter according to claim 5, characterized in that: It also includes a second paddle (4) which is identical to the first paddle (3). The second paddle (4) covers the first paddle (3) and forms a mounting cavity with the first paddle (3) for mounting a limit-shifting assembly (5) and a cutting blade (6).

7. A knotter capable of cutting thread according to claim 1 or 6, characterized in that: The driving component (7) comprises a gear (71) fixedly sleeved on the surface of the rotating shaft (51), a synchronous belt (72) wound around the surface of the gear (71), the synchronous belt (72) movably passes through the connecting rod (2) and is installed inside the handle (1), a sliding groove (73) is provided on the handle (1), a sliding block (74) is slidably connected inside the sliding groove (73), the sliding block (74) is connected to the synchronous belt (72), three slots (75) corresponding to the three states of the toggle assembly (5) are provided on the side of the sliding groove (73), and a block (76) adapted to the slot (75) is slidably connected to the sliding block (74).

8. A knotter capable of cutting thread according to claim 1 or 6, characterized in that: The driving component (7) comprises a micro motor for transmission connection with the rotating shaft (51).

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