Fingerstall type minimally invasive knot pusher and preparation method thereof

Abstract

The invention discloses a fingerstall type minimally invasive knot pusher and a preparation method thereof, and relates to the technical field of medical instruments. Comprising a finger stall part, a connecting rod and a knot pushing ring, a protruding block is arranged on one side of the finger stall part, a clamping groove is formed in the protruding block, the connecting rod is detachably installed in the clamping groove, the knot pushing ring is arranged at the upper end of the connecting rod and is of an annular structure, an elastic piece is arranged at one end of the knot pushing ring, and the other end of the knot pushing ring is connected with the finger stall part. The elastic piece extends to the inner side of the other end of the knot pushing ring, and the tail end of the elastic piece abuts against the inner side wall of the other end of the knot pushing ring. According to the finger stall type minimally invasive knot pusher, when a doctor carries out an operation, the knot pusher does not need to be helped by an assistant, the doctor can complete knot tying through single-person operation, the knot tying strength can be better controlled, safety is improved, the connecting rod is detachably installed in the clamping groove, and the connecting rod and the finger stall part can be rapidly detached or installed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a fingertip type minimally invasive knot pusher and a preparation method thereof. Background Art

[0002] The knot pusher is an important tool used to handle suture knots during surgery. In minimally invasive surgery, especially some deep tissue suturing operations, when the knot needs to be tightened, the knot pusher plays a key role. It is usually designed to be slender and have a specific structure, which can adapt to the spatial limitations of the surgical site and accurately operate the suture. To ensure that the knot is effectively pushed and tightened without damaging the surrounding tissue.

[0003] However, the minimally invasive knot pushers currently used in the market are mainly invented and launched by foreign medical personnel, and the shortcomings are: first, the knotting operation needs to be completed by the surgeon and the assistant (non-minimally invasive open surgery is performed by one person). In this way, there is a risk that when the assistant pulls the line at one end, the surgeon who ties the knot cannot control the knotting strength in full agreement with the assistant, and the thinner line is easy to break when tying the knot, and the thicker line is not easy to tighten. Secondly, the existing minimally invasive knot pushers are expensive and are integrated structures that cannot be disassembled, making it very difficult to repair and replace the parts of the knot pusher. Once a certain part is damaged or worn, because it cannot be disassembled, the knot pusher needs to be replaced as a whole, thereby increasing the use cost of the knot pusher. Summary of the invention

[0004] The main purpose of the present invention is to provide a finger-tip type minimally invasive knot pusher and a preparation method thereof, so as to overcome or improve at least one technical problem of the prior art, or to provide a useful alternative solution.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A finger sleeve type minimally invasive knot pusher comprises a finger sleeve part, a connecting rod and a knot pusher ring, a protrusion is arranged on one side of the finger sleeve part, a slot is arranged inside the protrusion, the connecting rod is detachably installed in the slot, the knot pusher ring is arranged on the upper end of the connecting rod, the knot pusher ring is annular in structure, an elastic sheet is arranged at one end of the knot pusher ring, the elastic sheet extends to the inner side of the other end of the knot pusher ring, and the end of the elastic sheet abuts against the inner side wall of the other end of the knot pusher ring, the finger sleeve part, the connecting rod, the knot pusher ring and the elastic sheet are all made of metal materials.

[0007] Furthermore, the included angle between the push-knot ring and the connecting rod is 30° to 60°.

[0008] Furthermore, the finger sleeve part has a truncated cone-shaped structure when viewed from the front, the inner diameter of the upper end of the finger sleeve part is smaller than the inner diameter of the lower end of the finger sleeve part, and the height of the finger sleeve part corresponds to the length of the first knuckle of the index finger or the middle finger.

[0009] Furthermore, the finger sleeve portion and the protrusion are an integrally formed structure, and the connection between the finger sleeve portion and the protrusion is a curved structure.

[0010] Furthermore, there is a gap between the end of the push-knot ring without the elastic sheet and the front end of the elastic sheet, the gap gradually decreases from the front end to the end of the elastic sheet, and the end of the push-knot ring without the elastic sheet has an arc-shaped structure.

[0011] Furthermore, a mounting assembly is provided on the connecting rod, and the mounting assembly is used to stably connect the connecting rod and the finger sleeve part.

[0012] Furthermore, the installation assembly includes a limit block and a positioning shaft, a slide groove is provided inside the connecting rod, a spring is connected inside the slide groove, the other end of the spring is fixedly connected to the limit block, the other end of the limit block is fixedly connected to the positioning shaft, a positioning hole is provided on the outer surface of the protrusion, the positioning shaft and the positioning hole are connected by a snap-fit ​​connection, and the length of the positioning shaft is greater than the depth of the positioning hole.

[0013] Furthermore, the diameter of the limit block is greater than the diameter of the positioning shaft, and the positioning shaft forms a telescopic structure inside the slide slot through a spring connected to the limit block.

[0014] A method for preparing a finger-tip type minimally invasive knot pusher comprises the following steps:

[0015] The finger sleeve part, the connecting rod, the push-knot ring and the elastic sheet are formed by machining or 3D printing; then the push-knot ring is welded to the top end of the connecting rod, the elastic sheet is welded to one end of the push-knot ring, and finally the connecting rod and the finger sleeve part are stably connected by installing the assembly, thereby completing the preparation of the pusher.

[0016] Furthermore, when the connecting rod is connected to the finger sleeve part by installing the assembly, the positioning shaft is first pushed toward the inside of the connecting rod so that the positioning shaft slides completely into the inside of the slide groove. During this process, the spring connected to the limit block is squeezed and compressed; then the connecting rod is inserted into the slot on the finger sleeve part and the connecting rod is moved downward. When the bottom end of the connecting rod is inserted to the lowest end of the slot, the positioning shaft and the positioning hole correspond to each other. Then the spring will push the positioning shaft connected to the limit block to extend out from the inside of the slide groove, so that the positioning shaft and the positioning hole are engaged and connected, and finally the connecting rod and the finger sleeve part are stably connected.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By arranging an elastic sheet at one end of the push knot ring, the elastic sheet extends to the inner side of the other end of the push knot ring, and the end of the elastic sheet abuts against the inner side wall of the other end of the push knot ring, when the push knot ring is used, the rope can be ensured to pass into the interior of the push knot ring, and the rope can be prevented from slipping out of the interior of the push knot ring; when the doctor performs surgery, the doctor can use this knot pusher without the help of an assistant, and the doctor can complete the knotting by himself, and can better control the knotting force, thereby improving safety;

[0019] The connecting rod is detachably installed in the card slot, and the connecting rod and the finger sleeve part are stably connected through the installation component on the connecting rod, so that the connecting rod and the finger sleeve part can be quickly installed and disassembled, thereby facilitating the maintenance and replacement of various components of the knot pusher, which is beneficial to reducing the use cost of the knot pusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0022] Figure 3 It is a structural schematic diagram of the finger sleeve part of the present invention.

[0023] Figure 4 It is a schematic cross-sectional view of the mounting assembly in the connecting rod of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the push-knot ring in the present invention.

[0025] Figure 6 It is a schematic diagram of the connection method between the connecting rod and the finger sleeve part in the present invention.

[0026] Among them: 1. Finger sleeve part; 2. Bump; 3. Slot; 4. Positioning hole; 5. Connecting rod; 6. Slide groove; 7. Spring; 8. Limit block; 9. Positioning shaft; 10. Push-knot ring; 11- Elastic sheet, 12- Arc structure. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0028] Example 1

[0029] Combination Figures 1 to 6The present invention provides a finger sleeve type minimally invasive knot pusher, comprising a finger sleeve portion 1, a connecting rod 5 and a knot push ring 10. A protrusion 2 is provided on one side of the finger sleeve portion 1, a card slot 3 is provided inside the protrusion 2, a connecting rod 5 is detachably connected inside the card slot 3, a knot push ring 10 is fixedly connected to the upper end of the connecting rod 5, the finger sleeve portion 1 and the protrusion 2 are an integrally formed structure, and the connection between the finger sleeve portion 1 and the protrusion 2 is a curved surface structure; the knot push ring 10 is an annular structure, an elastic sheet 11 is provided at one end of the knot push ring 10, the elastic sheet 11 extends to the inner side of the other end of the knot push ring 10, and the end of the elastic sheet 11 abuts against the inner side wall of the other end of the knot push ring 10, the finger sleeve portion 1, the connecting rod 5, the knot push ring 10 and the elastic sheet 11 are all made of metal materials.

[0030] By adopting this solution, the rope can be ensured to pass through the interior of the knot push ring 10 and can be prevented from slipping out of the knot push ring 10. When the doctor performs surgery, the doctor can use this knot pusher without the help of an assistant, and can complete the knotting alone, and can better control the knotting force, thereby improving safety.

[0031] Preferably, there is a gap between the end of the push-knot ring 10 where the elastic sheet 11 is not provided and the front end of the elastic sheet 11, and the gap gradually decreases from the front end to the end of the elastic sheet 11, and the gap is zero at the end of the elastic sheet 11, that is, the end of the elastic sheet 11 abuts against the inner side wall of the end of the push-knot ring 10 where the elastic sheet 11 is not provided. With this solution, the thread can more easily enter the interior of the push-knot ring 10 from the gap, which is more convenient for doctors to operate and reduces the doctor's operation time.

[0032] Preferably, the end of the push-knot ring 10 without the elastic sheet is in an arc-shaped structure 12 .

[0033] In this embodiment, the finger sleeve portion 1, the connecting rod 5, the push-knot ring 10 and the elastic sheet 11 are all made of stainless steel.

[0034] It is worth mentioning that the connecting rod 5 and the finger sleeve part 1 can be quickly disassembled or installed by using the installation assembly, which is convenient for storage in the limited space during surgery, improves the portability of the knot pusher, and facilitates the repair and replacement of the various components of the knot pusher. In addition, when the finger sleeve part 1 is subjected to frequent friction and slight cracks appear, or the connecting rod 5 and the knot push ring 10 are damaged, the connecting rod 5 and the finger sleeve part 1 can be disassembled, and the intact parts can be installed with other intact parts, which is beneficial to reduce the use cost of the knot pusher.

[0035] See also Figure 1-Figure 2 The finger sleeve part 1 is a truncated cone structure when viewed from the front, the inner diameter of the upper end of the finger sleeve part 1 is smaller than the inner diameter of the lower end of the finger sleeve part 1, and the height of the finger sleeve part 1 corresponds to the length of the first knuckle of the index finger or the middle finger.

[0036] It should be noted that: since the inner diameter of the finger sleeve 1 gradually decreases from the bottom to the top, the finger sleeve 1 is suitable for the wearing needs of medical staff with different finger dimensions, thereby avoiding the situation where the finger sleeve 1 is worn too tight or too loose. The height of the finger sleeve 1 can be customized for a single surgeon according to the length of the first knuckle of his index finger or middle finger.

[0037] Preferably, the included angle between the push-knot ring 10 and the connecting rod 5 is 30° to 60°.

[0038] See also Figure 1-Figure 6 A mounting assembly is provided inside the connecting rod 5, and the mounting assembly is used to stably connect the connecting rod 5 and the finger sleeve part 1. The mounting assembly includes a limit block 8 and a positioning shaft 9. A slide groove 6 is provided inside the connecting rod 5, and a spring 7 is connected inside the slide groove 6. The other end of the spring 7 is fixedly connected to the limit block 8. The connection mode of the limit block 8 and the positioning shaft 9 is a fixed connection. A positioning hole 4 is provided on the outer surface of the protrusion 2, and the connection mode of the positioning shaft 9 and the positioning hole 4 is a snap-fit ​​connection. The length of the positioning shaft 9 is greater than the depth of the positioning hole 4.

[0039] The principle of being able to quickly disassemble and install the connecting rod 5 and the finger sleeve part 1 is: when it is necessary to disassemble the connecting rod 5 and the finger sleeve part 1, first push the positioning shaft 9 into the inside of the connecting rod 5, so that the positioning shaft 9 slides into the inside of the slide groove 6, and the positioning shaft 9 and the positioning hole 4 are separated from each other, and then pull the connecting rod 5 upward to make the connecting rod 5 slide out from the inside of the card slot 3. At this time, the disassembly of the connecting rod 5 and the finger sleeve part 1 is completed; when it is necessary to install the connecting rod 5 and the finger sleeve part 1, first push the positioning shaft 9 into the inside of the connecting rod 5 so that the positioning shaft 9 It slides completely into the interior of the slide groove 6, and in this process, the spring 7 connected to the limit block 8 is squeezed and compressed, and then the connecting rod 5 is inserted into the interior of the slot 3. When the connecting rod 5 is inserted to the lower end of the slot 3, the positioning shaft 9 just corresponds to the positioning hole 4. Then, the spring 7 will push the positioning shaft 9 connected to the limit block 8 to extend out from the interior of the slide groove 6, so that the positioning shaft 9 is engaged with the positioning hole 4. Through the engagement connection between the positioning shaft 9 and the positioning hole 4, the connecting rod 5 can be stably connected to the finger sleeve part 1, thereby ensuring the normal use of the knot pusher.

[0040] See also Figure 4 The diameter of the limit block 8 is greater than the diameter of the positioning shaft 9 , and the positioning shaft 9 forms a telescopic structure inside the slide groove 6 through the spring 7 connected by the limit block 8 .

[0041] The function of the limit block 8 is: since the diameter of the limit block 8 is larger than the diameter of the positioning shaft 9, and the diameter of the front end of the slide groove 6 is smaller than the diameter of the end of the slide groove 6, the movement of the positioning shaft 9 can be limited by the limit block 8, thereby preventing the positioning shaft 9 from completely sliding out of the inside of the slide groove 6.

[0042] Example 2

[0043] This embodiment provides a method for preparing a finger-tip type minimally invasive knot pusher, comprising the following steps:

[0044] The finger sleeve part 1, the connecting rod 5, the push-knot ring 10 and the elastic sheet 11 are formed by machining or 3D printing; then the push-knot ring 10 is welded to the top end of the connecting rod 5, and the elastic sheet 11 is welded to one end of the push-knot ring 10, and finally the connecting rod 5 and the finger sleeve part 1 are stably connected by installing the assembly, thereby completing the preparation of the pusher.

[0045] In this embodiment, when the connecting rod 5 is connected to the finger sleeve part 1 by installing the assembly, the positioning shaft 9 is first pushed toward the inside of the connecting rod 5 so that the positioning shaft 9 slides completely into the inside of the slide groove 6. During this process, the spring 7 connected to the limit block 8 is squeezed and compressed; then the connecting rod 5 is inserted into the inside of the card slot 3 on the finger sleeve part 1 and the connecting rod 5 is moved downward. When the bottom end of the connecting rod 5 is inserted to the lowermost end of the card slot 3, the positioning shaft 9 and the positioning hole 4 correspond to each other. Then the spring 7 will push the positioning shaft 9 connected to the limit block 8 to extend out from the inside of the slide groove 6, so that the positioning shaft 9 is engaged and connected with the positioning hole 4, and finally the connecting rod 5 is stably connected to the finger sleeve part 1.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A finger-tip type minimally invasive knot pusher, characterized in that: The invention comprises a finger sleeve part (1), a connecting rod (5) and a push-knot ring (10), wherein a protrusion (2) is arranged on one side of the finger sleeve part (1), a slot (3) is arranged inside the protrusion (2), the connecting rod (5) is detachably installed in the slot (3), the push-knot ring (10) is arranged at the upper end of the connecting rod (5), the push-knot ring (10) is annular in structure, an elastic sheet (11) is arranged at one end of the push-knot ring (10), the elastic sheet (11) extends to the inner side of the other end of the push-knot ring (10), and the end of the elastic sheet (11) abuts against the inner side wall of the other end of the push-knot ring (10), and the finger sleeve part (1), the connecting rod (5), the push-knot ring (10) and the elastic sheet (11) are all made of metal materials.

2. A finger-tip type minimally invasive knot pusher as claimed in claim 1, characterized in that: The included angle between the push-knot ring (10) and the connecting rod (5) is 30° to 60°.

3. The finger-tip type minimally invasive knot pusher according to claim 1, characterized in that: The finger sleeve part (1) is in a truncated cone-shaped structure when viewed from the front. The inner diameter of the upper end of the finger sleeve part (1) is smaller than the inner diameter of the lower end of the finger sleeve part (1). The height of the finger sleeve part (1) corresponds to the length of the first knuckle of the index finger or the middle finger.

4. The finger-tip type minimally invasive knot pusher according to claim 1, characterized in that: The finger sleeve portion (1) and the convex block (2) are an integrally formed structure, and the connection between the finger sleeve portion (1) and the convex block (2) is a curved surface structure.

5. The finger-tip type minimally invasive knot pusher according to claim 1, characterized in that: There is a gap between the end of the push-to-lock ring (10) where the elastic sheet (11) is not provided and the front end of the elastic sheet (11), and the gap gradually decreases from the front end to the rear end of the elastic sheet (11). The end of the push-to-lock ring (10) where the elastic sheet (11) is not provided has an arc-shaped structure (12).

6. The finger-tip type minimally invasive knot pusher according to claim 1, characterized in that: The connecting rod (5) is provided with a mounting assembly, and the mounting assembly is used to stably connect the connecting rod (5) and the finger sleeve part (1).

7. The finger-tip type minimally invasive knot pusher according to claim 6, characterized in that: The mounting assembly comprises a limit block (8) and a positioning shaft (9); a slide groove (6) is provided inside the connecting rod (5); a spring (7) is connected inside the slide groove (6); the other end of the spring (7) is fixedly connected to the limit block (8); the other end of the limit block (8) is fixedly connected to the positioning shaft (9); a positioning hole (4) is provided on the outer surface of the protrusion (2); the positioning shaft (9) and the positioning hole (4) are connected in a snap-fitting manner; the length of the positioning shaft (9) is greater than the depth of the positioning hole (4).

8. The finger-tip type minimally invasive knot pusher according to claim 7, characterized in that: The diameter of the limit block (8) is greater than the diameter of the positioning shaft (9), and the positioning shaft (9) forms a telescopic structure inside the slide groove (6) through a spring (7) connected to the limit block (8).

9. A method for preparing a fingertip type minimally invasive knot pusher according to any one of claims 1 to 8, characterized in that: The following steps are involved: The finger sleeve part (1), the connecting rod (5), the knot pusher ring (10) and the elastic sheet (11) are manufactured by machining or 3D printing; then the knot pusher ring (10) is welded to the top end of the connecting rod (5), and the elastic sheet (11) is welded to one end of the knot pusher ring (10); finally, the connecting rod (5) and the finger sleeve part (1) are stably connected by installing the assembly, thereby completing the preparation of the knot pusher.

10. The method for preparing a finger-tip type minimally invasive knot pusher according to claim 9, characterized in that: When the connecting rod (5) is connected to the finger sleeve part (1) by means of the mounting assembly, the positioning shaft (9) is first pushed into the interior of the connecting rod (5) so that the positioning shaft (9) completely slides into the interior of the slide groove (6). During this process, the spring (7) connected to the limit block (8) is squeezed and compressed; then the connecting rod (5) is inserted into the interior of the card slot (3) on the finger sleeve part (1) and the connecting rod (5) is moved downward. When the bottom end of the connecting rod (5) is inserted into the lowest end of the card slot (3), the positioning shaft (9) and the positioning hole (4) correspond to each other. Then the spring (7) pushes the positioning shaft (9) connected to the limit block (8) to extend out from the interior of the slide groove (6), so that the positioning shaft (9) and the positioning hole (4) are engaged and connected, and finally the connecting rod (5) and the finger sleeve part (1) are stably connected.

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