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Microsurgery sectioning knife and blade

A microsurgery and blade technology, which is applied in the field of medical devices, can solve problems affecting the success rate of end-port anastomosis and side-port anastomosis, irregular blood vessel cutting ports, and affecting the sharpness of the scalpel, so as to reduce the probability of injury , Reduce the force and the effect of small range of motion

Pending Publication Date: 2020-03-17
BEIJING BOHAIKANGYUAN MEDICAL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the side opening of small blood vessels, the common scalpel produced according to the national YY 0174-2005 standard is still used clinically. The minimum size of the scalpel is 6.5mm in width and 42mm in length, which looks particularly large under a magnifying glass, and repeated Use affects the sharpness of the scalpel and is not suitable for use under microsurgery, especially for fine tissue sectioning. The too long blade cannot be used in a small area; the wider and longer blade blocks the line of sight, It is easy to cause irregular cutting ports of blood vessels, nerves, and lymphatic vessels, which affects the success rate of end-port anastomosis and side-port anastomosis

Method used

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  • Microsurgery sectioning knife and blade
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  • Microsurgery sectioning knife and blade

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as Figure 1-Figure 4 As shown, the present embodiment provides a microsurgical scalpel blade, which is used under a microscope. Therefore, in addition to limiting the size of the knife, the structure should also consider how to avoid blocking the line of sight. The blade includes a front The blade 1 and the tail blade fixing part 2, the front blade and the tail blade fixing part are integrated stainless steel parts, the back of the blade and the blade fixing part are straight, the blade thickness a is 0.2mm-0.5mm, preferably 0.2mm, When picking up and cutting surface tissue or the side wall of the lumen, it can be as close as possible to the tissue surface, and the tip of the knife can be pressed into the part 5 that needs to be cut, so as to realize accurate part cutting; the blade includes a tip 101 and a cutting edge, for The sharpness of the tip of the knife is very important to realize the back-pick cutting operation. It is necessary to ensure that the punctu...

Embodiment 2

[0034] Such as Figure 5-Figure 8 As shown, the present embodiment provides a microsurgical scalpel, on which the blade described in Embodiment 1 is installed, therefore, the content of Embodiment 1 is applicable to this embodiment, and the blade The tail blade fixing part is inserted into the corresponding slot position at the front end of the cutting knife handle 3 to form a fixed connection. The exposed length of the blade is 3mm, and the rear end of the knife handle is engaged with the front end of the knife handle 4. and handle are located on the same straight line.

[0035] When performing sectioning operations on special parts, such as coronary artery bypass grafting for coronary heart disease in cardiac surgery, free coronary arteries and side wall openings, the cutting knife of the disposable sectioning device, after the blade is inserted into the knife handle, is compatible with such as Figure 9 The snap-fit ​​connection of the machete handle shown in the figure ca...

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Abstract

The invention discloses a microsurgery sectioning knife and blade, and the microsurgery sectioning knife comprises a front cutting edge and a tail blade fixing part, the front cutting edge and the tail blade fixing part are an integrated metal part, the cutting edge and the back of the blade fixing part are flat and straight, the thickness a is 0.2 mm-0. 5 mm, the cutting edge comprises a knife point and a cutting edge opening, and the knife point is an acute angle. The front end of the cutting edge is an arc-shaped cutting edge opening and is gradually transited from the arc-shaped cutting edge opening to the straight cutting edge opening from the tool nose, the length b of the edge, where the tool back is located, corresponding to the arc-shaped cutting edge opening is 0.5 mm-1 mm, and the length c of the edge, where the tool back is located, corresponding to the straight cutting edge opening is 1 mm-3 mm. The included angle alpha between the edge where the knife back corresponding to the arc-shaped knife edge is located and the upper edge of the straight knife edge ranges from 5 degrees to 10 degrees, and the included angle beta between the edging grinding face of the knife edgeand the opposite face of the knife edge ranges from 15 degrees to 20 degrees. When the sectioning knife is used under a microscope, better visibility is achieved, the puncture force passing through atest knife point is smaller than 0.4 N, soft tissue can be easily punctured, and it is guaranteed that a puncture point is accurately positioned and reverse picking type sectioning is smoothly carried out.

Description

technical field [0001] The invention relates to medical instruments, in particular to a microsurgical scalpel and a blade. Background technique [0002] At present, microsurgical technology is developing rapidly, and many surgical disciplines have successively adopted microsurgical technology to perform fine operations in this professional range, so as to continuously improve the surgical effect. In particular, the transplantation of the second toe with anastomotic blood vessels and the forearm flap are the first technologies in my country, and our country has always ranked first in the world in terms of the quality and quantity of operations. Other specialties, such as microneurosurgery and microlymphatic surgery, have also developed rapidly and have their own surgical characteristics. [0003] With the increasing number of microsurgeries carried out in various departments and the increasing difficulty, there is an urgent need to use scalpels (dissectors) that meet the req...

Claims

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Application Information

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IPC IPC(8): A61B17/3211
CPCA61B17/3211
Inventor 潘福义邢章安郭明辉张强白亮张静
Owner BEIJING BOHAIKANGYUAN MEDICAL DEVICES
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