CN218684666U - Medical electrotome and cutter head assembly thereof - Google Patents
Medical electrotome and cutter head assembly thereof Download PDFInfo
- Publication number
- CN218684666U CN218684666U CN202222751354.2U CN202222751354U CN218684666U CN 218684666 U CN218684666 U CN 218684666U CN 202222751354 U CN202222751354 U CN 202222751354U CN 218684666 U CN218684666 U CN 218684666U
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- handle
- knife
- tool
- head assembly
- ring
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- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 18
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims description 9
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012323 Endoscopic submucosal dissection Methods 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 210000004877 mucosa Anatomy 0.000 description 3
- 238000002271 resection Methods 0.000 description 3
- 208000037062 Polyps Diseases 0.000 description 2
- 238000012326 endoscopic mucosal resection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 208000025865 Ulcer Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003187 abdominal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000012277 endoscopic treatment Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002350 laparotomy Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 231100000397 ulcer Toxicity 0.000 description 1
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Abstract
The utility model provides a knife head assembly of a medical electric knife and the medical electric knife, which comprises a snare loop and a cutting knife, wherein the cutting knife comprises a knife handle fixedly connected with the far end of the snare loop and a knife head fixedly connected with the far end of the knife handle, the knife handle comprises a first knife handle and a second knife handle connected with the first knife handle, the second knife handle is positioned at the near end of the first knife handle, and the width of the second knife handle is smaller than that of the first knife handle; the first cutter handle is provided with a through hole penetrating through the first cutter handle, and the through hole extends along the width direction of the first cutter handle; the far end of the ring-shaped sleeve penetrates through the through hole and extends along two sides of the length direction of the second tool handle, and the far end part of the ring-shaped sleeve does not protrude out of two sides of the length direction of the first tool handle; the utility model discloses realize that it is fixed continuous reliably between cutting knife and the snare loop, effectively avoid the cutting knife accident to drop, improve operation efficiency.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially a tool bit subassembly and medical electrotome of medical electrotome, this medical electrotome is used for alimentary canal, respiratory polyp or tumour mucosa excision or peels off.
Background
Endoscopic Submucosal Dissection (ESD) is a new treatment means in recent years, and is also a technology with good clinical application prospect, so that more early digestive tract cancers can be completely resected under an endoscope, and the pain of an open abdominal operation and the resection of organs are avoided. Compared with endoscopic treatment methods such as laparotomy and EMR (endoscopic mucosal resection), the ESD has the advantages that the wound is small, a patient can accept multiple treatments at multiple parts, a doctor can obtain a complete histopathological specimen for analysis, the resection rate of tumors with large area, irregular shapes or combined ulcer and scar is more than 96%, the recurrence probability is reduced, and the like.
The conventional ESD operation process needs operations such as cutting range marking, injection bulging, mucosa incision stripping, hemostasis and the like, so that the medical electrotome is a necessary medical instrument in the ESD operation; some medical electrotomes among the prior art can set up the cutting knife at the distal end of snare ring, and cutting knife and snare ring are fixed through crimping or welded mode, but, this kind of fixed connection mode is not very reliable, and the accident that can appear the cutting knife under the severe condition drops, will cause more serious bad consequence.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a medical electrotome bit subassembly realizes that fixed linking to each other reliably between cutting knife and the snare loop, effectively avoids the cutting knife accident to drop.
In order to achieve the purpose, the utility model provides a knife head component of a medical electric knife, which comprises a snare loop and a cutting knife, wherein the cutting knife comprises a knife handle fixedly connected with the distal end of the snare loop and a knife head fixedly connected with the distal end of the knife handle, the knife handle comprises a first knife handle and a second knife handle connected with the first knife handle, the second knife handle is positioned at the proximal end of the first knife handle, and the width of the second knife handle is smaller than that of the first knife handle; the first cutter handle is provided with a through hole penetrating through the first cutter handle, and the through hole extends along the width direction of the first cutter handle; the far end of the ring-shaped sleeve penetrates through the through hole and extends along two sides of the second cutter handle in the length direction, and the far end part of the ring-shaped sleeve does not protrude out of two sides of the first cutter handle in the length direction.
Preferably, the distal end of the snare loop is integrally provided with a ring connecting portion which is shaped, the ring connecting portion comprises a first bending section, a second bending section and a third bending section which are sequentially connected, the second bending section is arranged in the first through hole in a penetrating mode, and the first bending section and the third bending section do not protrude out of the two sides of the first hilt in the length direction and are respectively located on the two sides of the second hilt in the length direction.
Preferably, the first tool handle and the second tool handle are fixedly connected by welding or bonding.
Preferably, the first handle and the second handle are integrally formed.
Preferably, the snare loop is formed by a plurality of strands of braided wires made of stainless steel, or a plurality of strands of braided wires made of nickel titanium, or a plurality of strands of braided wires made of a composite material of stainless steel and nickel titanium, or a monofilament made of stainless steel, or a monofilament made of nickel titanium.
Preferably, the ring-shaped sleeve ring and the first handle and/or the second handle are further welded or bonded.
Preferably, the cutting knife is an integrally formed part.
Preferably, the cutter head is of a mushroom head type, or a door nail type, or a triangular type, or an L type, or a linear type.
The utility model discloses another aspect provides a medical electrotome, include as above the tool bit subassembly.
The utility model discloses a tool bit subassembly of medical electrotome realizes that it is fixed continuous reliably between cutting knife and the snare loop, effectively avoids the cutting knife accident to drop, ensures operation safety.
Drawings
FIG. 1 is a perspective view of a tool bit assembly according to the present application;
FIG. 2 is a schematic view of another perspective view of the cutter head assembly of the present application;
FIG. 3 is a schematic view of a view angle of the connection of the second tool shank to the first tool shank in the present application;
fig. 4a to 4e are schematic views of five embodiments of the cutting head of the cutting burr of the present application, wherein fig. 4f is a distal end side view of fig. 4 e.
Detailed Description
To facilitate understanding of the present application, the present application will be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means at least one, such as one, two, etc., unless specifically limited otherwise. 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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In this context, it is to be understood that the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically indicated and limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings of the specification.
The application provides a medical instrument, in particular to a medical electric knife used for resection or stripping of alimentary canal, respiratory polyp or tumor mucosa and a knife head component of the medical electric knife. In order to more clearly describe the structure of the present application, in the following embodiments, "distal end", "proximal end", "length direction" and "width direction" are used as terms of orientation, the "distal end" refers to the end of the instrument away from the operator during the operation, the "proximal end" refers to the end of the instrument close to the operator during the operation, the "length direction" refers to the direction from the distal end to the proximal end or the direction from the proximal end to the distal end of the instrument, and the "width direction" refers to the direction perpendicular to the "length direction".
As shown in fig. 1-3, the present application relates to a cutter head assembly of an electric medical knife, which comprises a snare loop 1 and a cutting knife 2; the cutting knife 2 comprises a knife handle 21 fixedly connected with the far end of the snare loop 1 and a knife head 22 fixedly connected with the far end of the knife handle 21, the knife handle 21 comprises a first knife handle 211 and a second knife handle 212 connected with the first knife handle 211, the second knife handle 212 is positioned at the near end of the first knife handle 211, and the width of the second knife handle 212 is smaller than that of the first knife handle 211; the first cutter handle 211 is provided with a through hole 2111 penetrating through the first cutter handle 211, and the through hole 2111 extends along the width direction of the first cutter handle 211; the far end of the snare loop 1 penetrates through the through hole 2111 and extends along two sides of the second handle 212 in the length direction, and the far end part of the snare loop 1 does not protrude out of two sides of the first handle 211 in the length direction; this fixed connection stable in structure is reliable and stable in this application, effectively avoids cutting knife 16 to drop from the distal end accident of snare loop 1 to improve the security of operation.
Further, the distal end of the snare loop 1 is integrally provided with a shaped loop connection portion, the loop connection portion includes a first bending section 111, a second bending section 112, and a third bending section 113 which are connected in sequence, the second bending section 112 is inserted into the first through hole 2111, and the first bending section 111 and the third bending section 113 do not protrude from both sides of the first handle 211 in the length direction and are respectively located on both sides of the second handle 212 in the length direction. Preferably, the connecting part of the snare loop is welded and fixed with the first handle 211 and the second handle 212 or is bonded and fixed with the first handle and the second handle; or the connecting part of the snare loop and the first handle 211 or the second handle 212 are further welded, fixed or bonded; therefore, the snare loop 1 is fixedly connected with the knife handle 21 through the loop connecting part, and the reliability of the fixed connection between the snare loop 1 and the knife handle 21 is further ensured; further preferably, the first tool holder 211 and the second tool holder 212 are fixedly connected by welding or fixedly connected by bonding or integrally formed, so as to ensure the reliability of the fixed connection between the first tool holder 211 and the second tool holder 212
Further, the cutting blade 2 is an integrally formed part. The cutting head 22 is a cutting part of the cutting blade 2, the cutting head 22 can have various shapes, such as a mushroom head shape as shown in fig. 4a, a door nail shape as shown in fig. 4b, an L shape as shown in fig. 4c, a straight line shape as shown in fig. 4d, or a triangular shape as shown in fig. 4e and 4f, and the cutting blade 2 with the cutting head 22 having a proper shape is selected according to the effective cutting of different lesion tissues and the operation habit of a doctor during the operation.
Furthermore, the snare loop 1 is formed by a plurality of strands of braided wires made of stainless steel, or a plurality of strands of braided wires made of nickel titanium, or a plurality of strands of braided wires made of a plurality of materials of stainless steel and nickel titanium through compounding, or a monofilament made of stainless steel, or a monofilament made of nickel titanium, and the snare loop ensures that the head end of the distal end is not deformed and damaged after being electrified and cut for a long time; meanwhile, the snare loop 1 has certain rigidity and can keep stable when used as a needle knife.
The utility model also provides a medical electrotome, including foretell tool bit subassembly, realize that it is fixed continuous reliably between cutting knife and the snare loop, effectively avoid the cutting knife accident to drop.
It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described exemplary embodiments of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (9)
1. The utility model provides a tool bit subassembly of medical electrotome, includes the snare loop and cutting knife, the cutting knife include with the fixed handle of a knife that links to each other of snare loop distal end and link firmly the tool bit of handle of a knife distal end, its characterized in that: the tool handle comprises a first tool handle and a second tool handle connected with the first tool handle, the second tool handle is positioned at the near end of the first tool handle, and the width of the second tool handle is smaller than that of the first tool handle; the first cutter handle is provided with a through hole penetrating through the first cutter handle, and the through hole extends along the width direction of the first cutter handle; the far end of the ring-shaped sleeve penetrates through the through hole and extends along two sides of the second cutter handle in the length direction, and the far end part of the ring-shaped sleeve does not protrude out of two sides of the first cutter handle in the length direction.
2. The medical electrotome head assembly according to claim 1 wherein:
the far end of the ring enclosing ring is integrally provided with a shaped ring connecting part, the ring connecting part comprises a first bending section, a second bending section and a third bending section which are sequentially connected, the second bending section is arranged in the first through hole in a penetrating mode, and the first bending section and the third bending section do not protrude out of two sides of the first tool holder in the length direction and are respectively located on two sides of the second tool holder in the length direction.
3. The medical electrotome head assembly according to claim 1 wherein:
the first knife handle and the second knife handle are fixedly connected in a welding mode or in a bonding mode.
4. The medical electrotome head assembly according to claim 1 wherein:
the first knife handle and the second knife handle are integrally formed.
5. The medical electrotome head assembly according to claim 1 wherein:
the snare loop is formed by a plurality of strands of braided wires made of stainless steel, or a plurality of strands of braided wires made of nickel titanium, or a plurality of strands of braided wires made of a plurality of materials of stainless steel and nickel titanium after being compounded, or a monofilament made of stainless steel, or a monofilament made of nickel titanium.
6. The medical electrotome head assembly according to claim 1 wherein:
the ring-shaped sleeve ring and the first knife handle and/or the second knife handle are further welded and fixed or bonded and fixed.
7. The medical electrotome head assembly according to claim 1 wherein:
the cutting knife is an integrated piece.
8. The medical electrotome head assembly according to claim 1 wherein:
the cutter head is in a mushroom head shape, or a door nail shape, or a triangular shape, an L shape or a linear shape.
9. A medical electrotome comprising a cutting head assembly according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222751354.2U CN218684666U (en) | 2022-10-19 | 2022-10-19 | Medical electrotome and cutter head assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222751354.2U CN218684666U (en) | 2022-10-19 | 2022-10-19 | Medical electrotome and cutter head assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218684666U true CN218684666U (en) | 2023-03-24 |
Family
ID=85587924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222751354.2U Active CN218684666U (en) | 2022-10-19 | 2022-10-19 | Medical electrotome and cutter head assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218684666U (en) |
-
2022
- 2022-10-19 CN CN202222751354.2U patent/CN218684666U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 10, No. 23 Huashan Middle Road, Xinbei District, Changzhou City, Jiangsu Province, 213022 Patentee after: LEO MEDICAL CO.,LTD. Country or region after: China Address before: Building 10, No. 18 Huashan Road, Xinbei District, Changzhou City, Jiangsu Province, 213002 Patentee before: LEO MEDICAL CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |