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Shaping cutter for joint surgical operation

A technology of surgical operations and planing knives, which is applied in the fields of surgery, medical science, and anatomical instruments. It can solve problems such as unfavorable operations, insufficient sharp knife tooth structure, and impact on patient recovery, so as to avoid tearing and save operation time. , the effect of reducing the amount of surgical operations

Pending Publication Date: 2018-11-23
TIANYING PRECISION TOOL PANYU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, planing tools for joint minimally invasive surgical instruments mostly focus on the overall structural design of the hollow outer tube in the cutting part of the planing tool and the inner tube in the corresponding window, and seldom involve the research on the serration of the cutting edge. The teeth of the planer are not sharp enough and The unreasonable structure of the knife teeth leads to excessive cutting force during the operation, tearing of uncut tissue, and knife jamming of the planer, which is not conducive to the smooth progress of the operation, and secondary injuries are likely to occur during the operation and affect the recovery of patients after surgery.

Method used

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  • Shaping cutter for joint surgical operation
  • Shaping cutter for joint surgical operation
  • Shaping cutter for joint surgical operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1 to Figure 6 Shown is the first embodiment of the planer for joint surgery of the present invention, including an outer tube 1 and an inner tube 2 that can rotate around its own axis and is sleeved in the outer tube. The front end of the inner tube 2 is provided with a The knife teeth 3 for cutting tissues, the front end of the outer tube 1 is provided with at least one planer window 4 capable of accommodating at least part of the exposed knife teeth; the inner tube 2 is provided with a suction hole for sucking chips by means of a negative pressure suction system, One end of the inner tube is connected with a power handle capable of controlling the unidirectional rotation and reciprocating rotation of the inner tube.

[0039] During the implementation of this embodiment, the unidirectional rotation and reciprocating rotation of the inner tube 2 are controlled by the power handle, and the part of the inner tube 2 exposed to the outer tube 1 cooperates wi...

Embodiment 2

[0043] Such as Figure 7 to Figure 9 Shown is the second embodiment of the joint surgery planer of the present invention, this embodiment is similar to the first embodiment, the difference is that the blade 3 is a crescent-shaped second blade window 32, the second blade The second knife-tooth window 32 includes a beveled surface 321 located at the front end of the inner tube and a first section 322 perpendicular to the beveled surface 321; the planer window 4 is a radian cut surface 42 obtained by obliquely cutting the outer tube, and the second knife-tooth window 31 protrudes at least partially On the arc surface where the arc section 42 is located. Cutting with the crescent-shaped second knife-tooth window 32 can obtain a relatively flat and smooth cutting surface. During the operation, the part of the inner tube 2 exposed to the outer tube 1 cooperates with the outer tube to cut tissue under high-speed rotation.

Embodiment 3

[0045] Such as Figure 10 to Figure 11 Shown is the third embodiment of the joint surgery planer of the present invention, this embodiment is similar to the first embodiment, the difference is that the knife teeth 3 are serrated third knife tooth windows 33, the second The three-toothed window 33 includes a sawtooth surface 331 parallel to the axis of the inner tube 2 and a cut surface 332 perpendicular to the sawtooth surface 331, and several planer windows 4 are uniformly arranged around the head of the outer tube. When resecting tissues with complex angles, it is possible to perform multi-angle tissue or cartilage cutting and planing operations conveniently and quickly, without the need for rotating planers at too many angles, which reduces surgical operations, improves surgical efficiency, and saves surgical time; in addition, these planers have a window of 4 It can also play a certain protective role to prevent the knife teeth 3 from excessively cutting tissues. In this ...

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Abstract

The invention relates to the technical field of endoscopic surgery tools, in particular to a shaping cutter for a joint surgical operation. The shaping cutter comprises an outer pipe and an inner pipewhich can rotate around the self axis and arranged into the outer pipe in a sleeved mode, the front end of the inner pipe is provided with cutter teeth used for rotatably cutting the tissue, and thefront end of the outer pipe is provided with at least one exposed shaping cutter window capable of containing at least part of cutter teeth; and the inner pipe is provided with a suction hole used forsucking cuttings by means of a negative pressure suction system, and one end of the inner pipe is connected with a power handle capable of controlling the inner pipe to rotate in the single way and in the reciprocating way. The cutter teeth are sharp, the cutting force in the operation process can be reduced, the phenomenon that the cutter teeth tear the uncut biological tissue is avoided, the degree of the secondary hurt of the operation to the affected part is reduced, and the pains of a patient are relieved; and multi-angle tissue or cartilage cutting and shaping operation can be conductedrapidly and conveniently when the tissue with the complex angle is cut off, and the operation time is saved.

Description

technical field [0001] The invention relates to the technical field of endoscopic surgical tools, and more specifically, to a planer for joint surgery. Background technique [0002] Endoscopic surgery belongs to the category of minimally invasive surgery. Compared with traditional open surgery, minimally invasive surgery has the advantages of less trauma, faster recovery and fewer complications. Endoscopic surgery is being accepted by more and more patients. The demand for endoscopic surgical tools such as minimally invasive planers has also increased dramatically. During endoscopic surgery, the minimally invasive planers rotate or spin at a high frequency relative to their axes to remove the biological tissue to be removed. [0003] In the prior art, planing tools for joint minimally invasive surgical instruments mostly focus on the overall structural design of the hollow outer tube in the cutting part of the planing tool and the inner tube in the corresponding window, and...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B17/3209
CPCA61B17/1659A61B17/320016A61B17/3209
Inventor 陈灏许琳琳王超
Owner TIANYING PRECISION TOOL PANYU
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