CN115869027A - Knot pushing and line shearing device - Google Patents
Knot pushing and line shearing device Download PDFInfo
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- CN115869027A CN115869027A CN202211619722.6A CN202211619722A CN115869027A CN 115869027 A CN115869027 A CN 115869027A CN 202211619722 A CN202211619722 A CN 202211619722A CN 115869027 A CN115869027 A CN 115869027A
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- knot
- thread
- pushing
- wall
- knot pushing
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- 238000010008 shearing Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 157
- 238000005520 cutting process Methods 0.000 claims abstract description 63
- 238000009966 trimming Methods 0.000 claims abstract description 53
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000005381 potential energy Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 12
- 206010072970 Meniscus injury Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides a knot pushing and line shearing device which comprises a knot pushing mechanism, a line shearing mechanism and a sliding assembly, wherein the line shearing mechanism is connected with the knot pushing mechanism in a sliding manner through the sliding assembly; the tail end of the thread trimming mechanism is provided with a cutting edge, and the cutting edge is attached to the outer wall of the knot pushing mechanism; the outer wall of the knot pushing mechanism is provided with a wire outlet hole, and when the thread shearing mechanism moves along the outer wall of the knot pushing mechanism, the cutting edge shears a suture from the wire outlet hole. The knot pushing mechanism and the thread cutting mechanism are integrated on the same device, so that knot pushing and thread cutting can be completed by the same instrument.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a knot pushing and wire shearing device.
Background
The knot pushing and cutting device is a medical instrument mainly used in the operation treatment process of meniscus injury of a human body and used for pushing knots to tighten sutures after an implant is released so as to tightly close wounds and cut redundant sutures.
In the knot pushing thread trimmer existing in the current market, knot pushing and thread trimming are two independent mechanisms, and knot pushing and thread trimming are carried out separately. In addition, the conventional knot-pushing thread trimmer has limited thread trimming times, and the thread trimmer is easy to become blunt after 3-5 times of trimming, so that the sharpness is obviously reduced. The line cutting device has insufficient sharpness, which can cause the problems of incomplete line cutting and incomplete line cutting. In addition, in the knot pushing process of the existing knot pusher, the suture line can be scratched due to the existence of edges or burrs.
Disclosure of Invention
One of the purposes of the invention is to provide a knot pushing thread trimmer, so that two processes of knot pushing and thread trimming can be completed by the same medical instrument.
The invention firstly discloses a knot pushing and wire shearing device which comprises a knot pushing mechanism, a wire shearing mechanism and a sliding assembly, wherein the wire shearing mechanism is connected with the knot pushing mechanism in a sliding manner through the sliding assembly; the tail end of the thread trimming mechanism is provided with a cutting edge, and the cutting edge is attached to the outer wall of the knot pushing mechanism; the outer wall of the knot pushing mechanism is provided with a wire outlet hole, and when the thread shearing mechanism moves along the outer wall of the knot pushing mechanism, the cutting edge shears a suture from the wire outlet hole.
Further, a handle is fixed at the head end of the knot pushing mechanism, the handle is provided with a containing cavity, and a sliding groove is formed in the containing cavity; the sliding assembly comprises an operating part and a linkage mechanism, the operating part is arranged outside the handle, the linkage mechanism is embedded in the sliding groove, the operating part is connected with and drives the linkage mechanism to move along the sliding groove, and the linkage mechanism enables the thread cutting mechanism to move along the outer wall of the knot pushing mechanism.
Further, the linkage mechanism comprises a linkage part, a limiting part and a connecting part; the linkage part is movably connected with the thread trimming mechanism; the limiting part is detachably connected with the linkage part and the thread cutting mechanism, and the linkage part and the thread cutting mechanism are fixedly connected when the linkage part and the thread cutting mechanism move to preset positions; the coupling portion fixedly connects the linkage portion to the operation portion.
Further, the linkage part comprises a stress piece, an elastic element and a guide seat, the stress piece is connected with the operation part, the guide seat is fixed on the wall part of the handle, and the elastic element is connected between the stress piece and the guide seat; the thread trimming mechanism penetrates through the guide seat and the elastic element and is connected with the stressed part; when the operation part drives the thread shearing mechanism to shear the thread through the stress piece, the elastic element stores elastic potential energy; when the operating part is loosened, the elastic element utilizes the elastic potential energy to enable the stressed part to drive the thread cutting mechanism to return to the initial position.
Furthermore, the stress element is connected with the thread cutting mechanism in a sliding mode along the axial direction, the limiting portion comprises a fixing screw, the fixing screw moves towards the thread cutting mechanism through a through hole formed in the stress element, and when the stress element reaches a preset position, the relative position of the stress element and the thread cutting mechanism is fixed.
Further, the coupling part includes connecting piece and the sliding block of overlapping setting, the connecting piece is connected the sliding block, the both sides of sliding block are embedded in the spout.
Further, the handle comprises an upper cover and a lower cover, the sliding groove is formed in the lower cover and is rectangular, and the operating portion drives the line shearing mechanism to move along a straight line when the linkage mechanism moves along the sliding groove.
Further, the thread trimming mechanism is slidably connected and attached to the outer wall of the knot pushing mechanism, and the cutting edge is made of 108Cr17 materials.
Further, the knot pushing mechanism and the thread cutting mechanism are both in a hollow tubular shape, the thread cutting mechanism is connected with the outer wall of the knot pushing mechanism in a sliding mode and attached to the outer wall of the knot pushing mechanism, a thread inlet hole is formed in the tail end of the knot pushing mechanism, and a second chamfer structure is arranged on the edge of the thread inlet hole.
Further, the blade is the arc form, and the edge is provided with first chamfer structure.
The knot pushing mechanism and the thread cutting mechanism are integrated on the same device, so that the knot pushing process and the thread cutting process can be completed through the same medical instrument.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural view of a knot-pushing wire cutter according to a preferred embodiment of the present application;
FIG. 2 is a schematic structural view of the knot pushing mechanism of FIG. 1;
FIG. 3 is a schematic structural view of the thread trimming mechanism of FIG. 1;
FIG. 4 shows the internal structure of the handle of FIG. 1;
FIG. 5 is a schematic view of the structure of the slide slot in the handle of FIG. 1;
FIG. 6 is a schematic, rough structural view of the glide assembly of FIG. 1;
FIG. 7 is a detailed structural schematic of the glide assembly of FIG. 1;
fig. 8 is a detailed schematic of the linkage mechanism of the glide assembly of fig. 6.
Detailed Description
The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The technical solution of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, 2 and 3, a knot pushing and trimming device according to a preferred embodiment of the present application includes a knot pushing mechanism
The knot mechanism 20, the thread cutting mechanism 40 and the sliding component 60, wherein the thread cutting mechanism 40 is connected with the knot pushing mechanism 20 through the sliding component 60 in a sliding mode 5; the end of the thread trimming mechanism 40 is provided with a cutting edge 42, and the cutting edge 42 is attached to the knot pushing mechanism 20
An outer wall; the outer wall of the knot pushing mechanism 20 is provided with a thread outlet hole 22, and when the thread shearing mechanism 40 moves along the outer wall of the knot pushing mechanism 20, the cutting edge 42 shears the thread from the thread outlet hole 22. The present embodiment unifies the knot-pushing and thread-cutting processes by providing a close fit of the thread-cutting mechanism 40 and knot-pushing mechanism 20, in combination with the sharp cutting edge 42 of the scissors
The cutting capability can be used for reliably cutting the suture, the thread cutting is thorough, the cutting quality is stable, and meanwhile, the slipknot tightening can be realized by 0. The embodiment assembles the devices required by the two processes of knot pushing and thread trimming into a structure of the same instrument
In the process, one instrument can realize knot pushing and thread cutting, so that the time is saved, the process is simplified, and the labor intensity of doctors and the complexity of the operation are reduced.
In one embodiment, the thread trimming mechanism 40 is attached to the outer wall of the knot pushing mechanism 20 and the outer wall of the knot pushing mechanism 20
The cutting edge 42 is made of 108Cr17 material and can slide relative to the outer wall of the knot pushing mechanism 20. 5 the cutting edge 42 is arc-shaped, and the edge is provided with a first chamfer structure 422. In the embodiment, through optimizing the material and the structure of the cutting edge, the knot pushing mechanism and the thread trimming mechanism are matched, so that passivation is not easy to occur after multiple times of cutting, and the sharpness of the cutting edge is still ensured after multiple times of cutting.
In an embodiment, the head end of the knot pushing mechanism 20 and the thread trimming mechanism 40 are both hollow tubular, the thread trimming mechanism 40 is attached to the outer wall of the knot pushing mechanism 20, is tightly matched with the outer wall of the knot pushing mechanism 20, and can slide relative to the outer wall of the knot pushing mechanism 020, a thread inlet hole 21 is formed at the tail end of the knot pushing mechanism 20, and a second inverted wire is arranged at the edge of the thread inlet hole 21
Furthermore, the chamfer structure arranged at the edge of the wire inlet 21 formed at the tail end of the knot pushing mechanism 20 and the chamfer structure arranged at the edge of the cutting edge 42 can avoid the damage to the suture in the operation process, avoid the scratch of the suture in the knot pushing process and enable the suture to generate edges or burrs, thereby protecting the suture and ensuring the quality of knot pushing and cutting.
In an embodiment, a handle 30 is fixed at the head end of the knot pushing mechanism 20, and referring to fig. 4, 5 and 6, the handle 30 includes an upper cover 31 and a lower cover 33, the head end of the knot pushing mechanism 20 is provided with a hollow structure 23 made of a plastic material, and the hollow structure 23 is in a shape of a bump and is matched with the upper cover 31 through a hole shaft. The upper cover 31 and the lower cover 33 form a housing chamber 32, and a slide groove 322 is formed in the lower cover 33. A glide assembly 60 is provided on the handle 30. The slide unit 60 includes an operation portion 62 and an interlocking mechanism 64. The operation portion 62 is disposed outside the handle 30 and has a plurality of protrusions on the surface thereof. The linking mechanism 64 is embedded in the sliding slot 322, and when the operating part 62 is connected to drive the linking mechanism 64 to move along the sliding slot 322, the linking mechanism 64 makes the thread trimming mechanism 40 move along the outer wall of the knot pushing mechanism 20. The slide groove 322 has a rectangular shape so that the operation portion 62 can move the yarn cutting mechanism 40 linearly when the interlocking mechanism 64 moves along the slide groove 322.
In an embodiment, as can be seen in fig. 7 and 8, the linking mechanism 64 includes a linking portion 642, a position-limiting portion 644, and a coupling portion 646.
Specifically, the stopper 644 is detachably connected to the linking part 642 and the thread trimming mechanism 40, and fixedly connects the linking part 642 and the thread trimming mechanism 40 when the linking part 642 and the thread trimming mechanism 40 move to a predetermined position. The coupling portion 646 fixedly connects the interlocking portion 642 to the operating portion 62. The linkage portion 642 includes a force receiving member 641, an elastic element 643 and a guide seat 645. The force receiving member 641 is connected to the operation portion 62, and the force receiving member 641 may have a plate shape and be fastened in the upper cover 31 to be engaged with the upper cover 31. The bottom of the upper cover 31 is hollowed to form a hollow groove, and the stressed member 641 slides back and forth in the plane where the hollow groove is located. The back of the force-bearing member 641 forms a boss which is embedded in the sliding groove 322, so that the force-bearing member 641 can only slide linearly along the extending direction of the sliding groove 322 under the constraint of the sliding groove 322, the straightness of the front and back movement of the force-bearing member 641 is ensured, and the reliability of the use of the knot-pushing wire cutter is ensured.
In particular, see fig. 6 and 7. The guide 645 is used to guide the movement of the thread trimming mechanism 40. The guide 645 is fixed to a wall portion of the handle 30, preferably at the junction of the upper and lower covers 31 and 33. The guide block 645 includes a guide portion 651 and a stopper 653. The guiding part 651 is sleeved on the outer wall of the thread trimming mechanism 40, the front end of the guiding part is protruded out of the guiding seat 645, the rear end of the guiding part is connected with the front end of the stopping part 653, and the rear end of the stopping part 653 is clamped and fixed on the end wall 321 of the groove 322. After the guide seat 645 is completely matched with the upper cover 31 and the lower cover 33, the guide seat 645 is locked and cannot move, and the upper cover 31 and the lower cover 33 are locked and fixed.
Specifically, the elastic element 643 is connected between the force receiving element 641 and the guide seat 645. The thread trimming mechanism 40 is tightly sleeved on the knot pushing mechanism 20, penetrates through the guide seat 645 and the elastic element 643, and is connected with the force receiving element 641. When the operating portion 62 pushes the force receiving member 641 forward to drive the cutting edge 42 of the thread trimming mechanism 40 to trim the thread, the front end of the elastic element 643 stops at the stopping portion 653, and the elastic element 643 is compressed by the force, thereby storing elastic potential energy. After the thread trimming process is finished, the operating portion 62 is released, the corresponding force receiving member 641 is released, the elastic element 643 returns to the original state, and the elastic potential energy is released, so that the force receiving member 641 drives the thread trimming mechanism 40 to automatically return to the initial position, thereby achieving the purpose of automatic recovery. The push-end thread trimmer of the embodiment can automatically recover the thread trimming mechanism 40 after the thread trimming process is finished, so that the operation procedures of operators are reduced, the time is saved, and the thread trimmer is convenient to reuse.
More specifically, the force receiving member 641 is slidably connected to the thread trimming mechanism 40 along an axial direction of the thread trimming mechanism 40, and the limiting portion 644 includes a fixing screw, which moves toward the thread trimming mechanism 40 through a through hole formed in the force receiving member 641 and fixes a relative position between the force receiving member 641 and the thread trimming mechanism 40 when reaching a predetermined position. In other words, the limiting portion 644 can control the depth of the thread trimming mechanism 40 inserted into the force receiving member 641, so that after the force receiving member 641 is pushed to the bottom, the matching size of the thread trimming mechanism 40 and the knot pushing mechanism 20 can ensure that the cutting edge 42 of the outer thread trimming mechanism 40 can perform the thread trimming function, cut off the thread, and ensure that the thread trimming mechanism 40 does not extend beyond the knot pushing mechanism 20 and injures the human body.
In some embodiments, referring to fig. 7 again, the coupling portion 646 includes a fixedly connected coupling block 662 and a sliding block 664, the coupling block 662 connects the sliding block 664 and the operating portion 62, and both sides of the sliding block 664 are embedded in the sliding grooves 322.
In conclusion, the knot pushing and trimming device structure provided by the invention can be used for pushing a slipknot, has enough sharpness and sufficient trimming times, and can be automatically retracted, the knot pushing and trimming device with the structure can be used for furling the slipknot and repeatedly trimming a suture for multiple times, and the working efficiency of a doctor can be improved, the operation time can be shortened, the complexity degree of the operation can be reduced, the operation risk can be reduced, and the cost investment can be reduced on the basis of ensuring the quality and the performance of a product.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, which may include other elements not expressly listed in addition to those listed.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a knot line trimmer pushes away which characterized in that: the knot pushing mechanism comprises a knot pushing mechanism (20), a thread shearing mechanism (40) and a sliding assembly (60), wherein the thread shearing mechanism (40) is connected to the knot pushing mechanism (20) in a sliding manner through the sliding assembly (60); the tail end of the thread trimming mechanism (40) is provided with a cutting edge (42), and the cutting edge (42) is attached to the outer wall of the knot pushing mechanism (20); the outer wall of the knot pushing mechanism (20) is provided with a thread outlet hole (22), and when the thread shearing mechanism (40) moves along the outer wall of the knot pushing mechanism (20), the cutting edge (42) shears a suture thread from the thread outlet hole (22).
2. The knot-pushing wire-cutter mechanism according to claim 1, characterized in that:
a handle (30) is fixed at the head end of the pushing mechanism (20), the handle (30) is provided with a containing cavity (32), and a sliding groove (322) is arranged in the containing cavity (32);
slip subassembly (60) including operating portion (62) and link gear (64), operating portion (62) set up in handle (30) are outside, link gear (64) are embedded in spout (322), operating portion (62) are connected and are driven link gear (64) are followed when spout (322) remove, link gear (64) make trimming mechanism (40) are followed push away knot mechanism (20) outer wall and remove.
3. The knot-pushing wire-cutter mechanism according to claim 2, characterized in that: the linkage mechanism (64) comprises a linkage part (642), a limiting part (644) and a connecting part (646); the linkage part (642) is movably connected with the thread cutting mechanism (40); the limiting part (644) is detachably connected to the linkage part (642) and the trimming mechanism (40), and when the linkage part (642) and the trimming mechanism (40) move to a preset position, the linkage part (642) and the trimming mechanism (40) are fixedly connected; the coupling portion (646) fixedly connects the interlocking portion (642) to the operating portion (62).
4. The knot-pushing wire-cutter mechanism according to claim 3, characterized in that:
the linkage part (642) comprises a force receiving part (641), an elastic element (643) and a guide seat (645), the force receiving part (641) is connected with the operation part (62), the guide seat (645) is fixed on the wall part of the handle (30), and the elastic element (643) is connected between the force receiving part (641) and the guide seat (645); the thread trimming mechanism (40) penetrates through the guide seat (645) and the elastic element (643) and is connected with the force receiving piece (641);
when the operating part (62) drives the thread shearing mechanism (40) to shear the thread through the force receiving piece (641), the elastic element (643) stores elastic potential energy; when the operating part (62) is released, the elastic element (643) uses the elastic potential energy to enable the force receiving piece (641) to drive the thread cutting mechanism (40) to return to the initial position.
5. The knot-pushing wire cutter mechanism of claim 4, wherein: the stress element (641) is connected with the thread cutting mechanism (40) in a sliding mode along the axial direction, the limiting portion (644) comprises a fixing screw, the fixing screw moves towards the thread cutting mechanism (40) through a through hole formed in the stress element (641), and when the stress element (641) reaches a preset position, the relative position of the stress element (641) and the thread cutting mechanism (40) is fixed.
6. The knot-pushing wire-cutter mechanism according to claim 3, characterized in that: the coupling portion (646) comprises a coupling block (662) and a sliding block (664) which are arranged in an overlapped mode, the coupling block (662) is connected with the sliding block (664), and two sides of the sliding block (664) are embedded in the sliding grooves (322).
7. The knot-pushing wire-cutter mechanism according to claim 2, characterized in that: the handle (30) comprises an upper cover (31) and a lower cover (33), the sliding groove (322) is formed in the lower cover (33), the sliding groove (322) is rectangular, and the operating portion (62) enables the linkage mechanism (64) to move along the sliding groove (322) and drives the trimming mechanism (40) to move along a straight line.
8. The knot-pushing wire-cutter mechanism according to claim 1, characterized in that: the thread cutting mechanism (40) is connected with the outer wall of the knot pushing mechanism (20) in a sliding mode and attached to the outer wall of the knot pushing mechanism, and the cutting edge (42) is made of 108Cr17 materials.
9. The knot-pushing wire-cutter mechanism according to claim 1, characterized in that: the knot pushing mechanism (20) and the thread cutting mechanism (40) are both hollow tubular, the thread cutting mechanism (40) is connected in a sliding mode and attached to the outer wall of the knot pushing mechanism (20), a thread inlet hole (21) is formed in the tail end of the knot pushing mechanism (20), and a second chamfer structure (212) is arranged on the edge of the thread inlet hole (21).
10. The knot-pushing wire-cutter mechanism according to claim 1, characterized in that: the cutting edge (42) is arc-shaped, and a first chamfer structure (422) is arranged at the edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619722.6A CN115869027A (en) | 2022-12-15 | 2022-12-15 | Knot pushing and line shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619722.6A CN115869027A (en) | 2022-12-15 | 2022-12-15 | Knot pushing and line shearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115869027A true CN115869027A (en) | 2023-03-31 |
Family
ID=85754989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211619722.6A Pending CN115869027A (en) | 2022-12-15 | 2022-12-15 | Knot pushing and line shearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115869027A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116098664A (en) * | 2023-04-07 | 2023-05-12 | 杭州锐健马斯汀医疗器材有限公司 | Suture device and suture method |
| CN116269568A (en) * | 2023-05-23 | 2023-06-23 | 杭州翡宠生物科学有限公司 | Push knot tensioner |
-
2022
- 2022-12-15 CN CN202211619722.6A patent/CN115869027A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116098664A (en) * | 2023-04-07 | 2023-05-12 | 杭州锐健马斯汀医疗器材有限公司 | Suture device and suture method |
| CN116269568A (en) * | 2023-05-23 | 2023-06-23 | 杭州翡宠生物科学有限公司 | Push knot tensioner |
| CN116269568B (en) * | 2023-05-23 | 2023-09-01 | 杭州翡宠生物科学有限公司 | push knot tensioner |
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