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Rotary cutter

A kind of technology of rotary cutter and blade, which is used in inoculation and ovulation diagnosis, medical science, anatomical instruments, etc., can solve the problems of no blade, incomplete cutting, tearing of damaged tissue, etc. Knife, effect of increasing length

Pending Publication Date: 2019-08-20
健科科技(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the vacuum-assisted breast biopsy and the rotary cutter of the rotary cutting system on the market have incomplete cutting when cutting the lesion tissue, which is prone to tearing and damaging the tissue, the tissue is stuck on the rotary cutter, and the knife edge is blunted and the operation is interrupted.
[0003] At present, there is no blade on the groove of the outer needle tube of the existing rotary cutter on the market

Method used

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Embodiment Construction

[0018] The rotary cutter of the invention is suitable for mammary gland biopsy and rotary cutter system.

[0019] refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Figure 6 , describe in detail the preferred embodiment of the rotary cutter of the present invention.

[0020] In order to achieve the above object, the present invention provides a rotary cutter, which is characterized in that: the front part of the outer needle tube 1 is provided with a knife notch 1.1, and the front end of the knife notch 1.1 is provided with an outer needle tube blade 1.1.1, The front end of the inner needle tube 2 is provided with an inner needle tube blade 2.1, the inner needle tube blade 2.1 is wave-shaped, the wave cycle of the wave-shaped blade 2.1 of the inner needle tube 2 is 2, and the outer needle tube 1 is set on Outside the inner needle tube 2, the inner needle tube 2 and the outer needle tube 1 have a common axis, and the inner needle tube 2 rotates around ...

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Abstract

The invention provides a rotary cutter. The rotary cutter comprises an outer needle tubing and an inner needle tubing. The rotary cutter is characterized in that a cutter notch is formed in the frontpart of the outer needle tubing; an outer needle tubing blade is arranged at the front end of the cutter notch; an inner needle tubing blade is arranged at the front end of the inner needle tubing, and has a waved shape; the wave period of the waved blade of the inner needle tubing is one or more than one; the outer needle tubing sleeves the inner needle tubing; the inner needle tubing and the outer needle tubing have a common axial lead; and the inner needle tubing rotates forward and backward around the axial lead or moves straight forward and backward along the axial lead. The rotary cuttercan be prevented from being stuck by the fact that a tissue is drawn into the crack between the inner needle tubing and the outer needle tubing since the tissue is not effectively cut, can prevent the phenomenon of tearing and damaging of the tissue since the tissue is not completely cut off, and is more endurable since the effective cutter blade length can be increased and blade consumption canbe reduced.

Description

technical field [0001] The invention relates to a rotary cutter, in particular to a rotary cutter used for breast biopsy and rotary cutter system. Background technique [0002] At present, the vacuum-assisted breast biopsy and the rotary cutter of the rotary cutting system on the market have incomplete cutting when cutting the lesion tissue, which is prone to tearing and damaging the tissue, the tissue is stuck on the rotary cutter, and the knife edge is blunted and the operation is interrupted. [0003] There is no blade on the groove of the outer needle tube of the existing rotary cutter on the market at present. [0004] At present, the inner needle tube edge of the existing rotary cutter on the market is a circular flat or circular oblique edge, both of which are straight blades. Under the condition of the same diameter of the inner needle tube, the effective cutting edge length of the wave-shaped knife edge of the present invention is longer than that on the market. Ex...

Claims

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Application Information

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IPC IPC(8): A61B17/3211A61B10/02
CPCA61B17/3211A61B10/0233
Inventor 杨剑鹏杨剑敏王颀
Owner 健科科技(广州)有限公司
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