CN213489105U

CN213489105U - Bevel arc-shaped knife for under-mirror operation

Info

Publication number: CN213489105U
Application number: CN202021117801.3U
Authority: CN
Inventors: 李振宙; 肖伟鹏; 李霄
Original assignee: Zhuhai Weierkang Biotechnology Co ltd
Current assignee: Zhuhai Weierkang Biotechnology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-06-22
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to an operation is with bevel connection arc sword under mirror, cutter arbor including tool bit, handle and long straight shape, the tool bit includes the cutting edge portion of being connected with the cutter arbor and takes shape at the back of a knife blade portion, a serial communication port, cutting edge portion include first arcwall face, second arcwall face and take shape at the scarf of tool bit end. The second arc-shaped surface is connected to the cutter bar, the first arc-shaped surface is spatially continuous with the second arc-shaped surface, and an arc-shaped boundary is formed between the first arc-shaped surface and the oblique cutting surface; the chamfer forms an elliptical edge line at the end of the blade portion. According to the utility model discloses a bevel connection arc sword is used for expanding the usefulness in decompression space around the nerve, and it is big to observe the area under the scope, is favorable to safe osteotomy.

Description

Bevel arc-shaped knife for under-mirror operation

Technical Field

The utility model relates to an under-mirror operation is with bevel connection arc sword belongs to medical instrument technical field.

Background

The osteotome is an operation instrument used for cutting bone tissues in surgical operations, and most of the traditional osteotomes are manual tools and are applied to open operations. Meanwhile, the traditional osteotome head cannot be used under an endoscope, so that the under-endoscope spinal surgery excessively depends on high-speed abrasive drilling or ultrasonic osteotome, the time consumption in the surgery is long, and the surgery risk degree is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bevel connection arc sword is used in operation under mirror has solved one of the current bone cutting instrument can't carry out safety, excision osseous tissue fast, operation time is long, the operation risk is high, the operation expense is expensive problem at least.

The technical scheme of the utility model is an operation under mirror is with bevel connection arc sword, it includes: tool bit, handle and the long cutter arbor of straight shape, the tool bit includes the back of a knife blade portion and the shaping back of a knife blade portion that is connected with the cutter arbor, its characterized in that, back of a knife blade portion include first arcwall face, second arcwall face and take shape at the scarf of tool bit end. The second arc-shaped surface is connected to the cutter bar, the first arc-shaped surface is spatially continuous with the second arc-shaped surface, and an arc-shaped boundary is formed between the first arc-shaped surface and the oblique cutting surface; the chamfer forms an elliptical edge line at the end of the blade portion.

Further, the first arc-shaped surface is an arc surface around the length direction of the cutter rod, and the second arc-shaped surface is an arc surface around the radial direction of the cutter rod.

Further, the radius of curvature of the first arcuate surface is greater than the radius of curvature of the second arcuate surface.

Furthermore, the included angle between the chamfer plane and the length direction of the cutter bar ranges from 40 degrees to 50 degrees.

Furthermore, the cutter head and the cutter bar are integrally formed to form the cutter body.

Further, the handle includes a plurality of anti-slip grooves.

Further, the handle and the cutter bar are integrated and can not be disassembled.

The utility model has the advantages that:

the utility model discloses a skew opening arc sword under surgical mirror can be fast, the bony tissue of safe excision in the endoscopic surgery, and other tissues that specific site can be protected in the design of tool bit are not harmed, have reduced the operation risk, have shortened the operation time. The bevel arc knife is used for expanding a decompression space around the nerve, has large observable area under the endoscope, and is beneficial to safely cutting bone tissues.

Drawings

Fig. 1 shows a front overall view of a tool according to the invention.

Fig. 2 shows a side view of the cutting tool according to the present invention.

Figure 3 shows a perspective view of a detail of the cutter head.

Figure 4 shows a side view of a detail of the cutter head.

Fig. 5 is a schematic view showing an initial operation state of the cutter according to the present invention in the spinal surgery.

Fig. 6 shows a schematic view of the cutting tool according to the invention in an intermediate operating state during a spinal surgery.

Fig. 7 shows a schematic view of the cutting tool according to the invention at the end of its movement in spinal surgery.

Detailed Description

The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It is noted that, as used in the specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, 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. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

Referring to fig. 1 and 2, the bevel arc-shaped knife according to the present invention includes a knife head 1, a cylindrical handle 3, and a long straight knife bar 2. The outer diameter of the knife bar 2 and the knife head 1 is matched with the instrument channel of the endoscope. Therefore, the use range of the bevel arc-shaped knife according to the utility model does not limit the vertebra segment, and the bevel arc-shaped knife can also be used for the vertebra segment of cervical vertebra, thoracic vertebra and lumbar vertebra, and even can be used for other occasions of orthopedic minimally invasive surgery.

The handle is connected with the cutter bar 2, and the cutter head 1 is positioned at the end part of the cutter bar 2 and is integrally formed with the cutter bar 2. The handle 3 and the cutter bar 2 are integrated and are not detachable, so that the rigidity and the service life of the cutter are increased. In addition, the handle 3 includes a plurality of grooves 31 to provide anti-slip function and facilitate stable holding during the operation. Preferably, these grooves 31 are elongated along the length of the handle 3 and are evenly distributed along the cylindrical periphery of the handle 3 for ease of manufacture.

Referring to fig. 3, the cutting edge portion 10 includes a first curved surface 101, a second curved surface 102 and a chamfered surface 104 formed at the end of the tool bit 1, wherein the second curved surface 102 is connected to the tool holder 2, the first curved surface 101 is spatially continuous with the second curved surface 102, and an arc-shaped dividing line is formed between the first curved surface 101 and the chamfered surface 104. The chamfer 104 forms an elliptical edge line 13 at the end of the blade portion 10. Specifically, the cross section of the top end of the bevel-opening arc-shaped cutter is an arc-shaped surface, the blade line 13 is obtained by intersecting an elliptical section and the arc-shaped surface, and an arc line is formed at the intersection; the arc-shaped surface at one side of the knife edge line 13 is obtained by extending the outer surface of the knife handle, and the oval section at the other side is cut off by the other concave arc-shaped surface towards the inner side of the knife head 1.

Referring to fig. 3 and 4 together, the first arcuate surface 101 is an arc around the length of the blade holder 2 (in the y-direction in the figure) and the second arcuate surface 102 is an arc around the radial direction of the blade holder 2 (in the x-direction in the figure). Thus, a continuous cambered surface which is continuous in the space is formed, and the rigidity of the blade is increased. In some embodiments, the radius of curvature of the first arcuate surface 101 is greater than the radius of curvature of the second arcuate surface 102. In view of the cutting angle of the miter arc blade according to the present invention, in some embodiments, the included angle between the chamfer 104 and the length direction (y) of the blade bar 2 is in the range of 40 ° to 50 °, preferably 45 ° or thereabouts.

To further assist in understanding the structural features and advantages of the present invention, illustrations and procedures of the use of the vertical scraper according to the present invention are described below.

Reference is now made to fig. 5-7, which are schematic illustrations of the initial, intermediate and end states of the procedure performed in accordance with the present invention in association with a vertebral operation. In the initial state, the cutter passes through the sleeve 4 of the surgical instrument to expose the cutter head 1, and then obliquely extends into the initial position near the surgical target point with the curved surface of the blade portion 10 facing the target point. In the intermediate state, the blade line 13 is contacted with the pathological tissue to be scraped, and then the cutter is moved in the left-right direction of the figure under the action of force, at the moment, the cut tissue fragments can be transferred to a proper place under the pushing of the cambered surface of the blade part 10, so that the damage and the pollution to other tissues are reduced. At the end, the cutter returns to the initial position to prepare for retracting the cutter.

According to the utility model discloses a bevel connection arc sword is used for expanding the usefulness in decompression space around the nerve, and it is big to observe the area under the scope, is favorable to safe osteotomy.

The foregoing is merely a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, as long as the technical effects of the present invention are achieved by the same means, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present disclosure should be included within the scope of the present disclosure. All belong to the protection scope of the utility model. The technical solution and/or the embodiments of the invention may be subject to various modifications and variations within the scope of the invention.

Claims

1. The utility model provides an operation is with oblique mouthful arc sword under mirror, includes cutter arbor (2) of tool bit (1), handle (3) and long straight shape, tool bit (1) include cutting edge portion (10) be connected with cutter arbor (2) and take shape at back of a knife portion (10) portion (11) at the back, its characterized in that, cutting edge portion (10) include first arcwall face (101), second arcwall face (102) and take shape at scarf (104) of tool bit (1) end, wherein:

the second arc-shaped surface (102) is connected to the cutter bar (2), the first arc-shaped surface (101) is spatially continuous with the second arc-shaped surface (102), and an arc-shaped dividing line is formed between the first arc-shaped surface (101) and the chamfer surface (104);

the chamfer (104) forms an elliptical blade line (13) at the end of the blade (10).

2. The bevel arc scalpel for use in an endoscopic surgery of claim 1, wherein:

the first arc-shaped surface (101) is an arc surface around the length direction (y) of the cutter rod (2), and the second arc-shaped surface (102) is an arc surface around the radial direction (x) of the cutter rod (2).

3. The bevel arc-shaped knife for the endoscopic surgery according to claim 1 or 2, characterized in that:

the radius of curvature of the first arcuate surface (101) is greater than the radius of curvature of the second arcuate surface (102).

4. The bevel arc scalpel for use in an endoscopic surgery of claim 1, wherein:

the included angle between the chamfer surface (104) and the length direction (y) of the cutter bar (2) ranges from 40 degrees to 50 degrees.

5. The bevel arc-shaped knife for the under-mirror operation of claim 1, wherein the knife head (1) and the knife bar (2) are integrally formed to form a knife body.

6. The bevel surgical knife according to claim 1, wherein the handle (3) comprises a plurality of anti-slip grooves (31).

7. The bevel arc-shaped knife for the under-mirror operation according to claim 1, wherein the handle (3) and the knife bar (2) are integrated and are not detachable.