Puncture kit and adjustable discectomy knife kit

A puncture kit and excision knife technology, which is applied to puncture needles, trocars, surgical cutting instruments, etc., can solve problems such as inability to adjust, fixed shape, and inability to adjust the size of the knife, reducing difficulty and time, low possibility, Cut accurate results

Inactive Publication Date: 2013-07-03
雷高
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned intervertebral disc cutter outer sleeve needs to be cut with corresponding surgical instruments such as internal and external rotary cutters, spiral cutters, etc. The shape of these cutters is fixed, and the most suitable size of the blade cannot be adjusted according to the actual situation of the operation.
Especially during

Method used

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  • Puncture kit and adjustable discectomy knife kit
  • Puncture kit and adjustable discectomy knife kit
  • Puncture kit and adjustable discectomy knife kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 1~Figure 4 As shown, a puncture set includes a blade mechanism 41, a thrust rod 42, an adjustment mechanism 43 for adjusting the size of the knife edge of the blade mechanism 41, and the thrust rod 42 is respectively connected with the blade mechanism 41 and the adjustment mechanism 43 .

[0055] The adjustment mechanism 43 includes an adjustment nut 431 and a cavity 432. The rear portion of the thrust rod 42 is arranged in the cavity 432. The rear portion of the thrust rod 42 is provided with an external thread 421. The adjustment nut 431 is connected to the cavity 432. The rear portion of the thrust rod 42 is screwed. The front part of the adjustment nut 431 is provided with an internal thread 4311 , the adjustment nut 431 extends into the cavity 432 , and the adjustment nut 431 is threadedly connected with the rear part of the thrust rod 42 . Twist the adjusting nut 431 to adjust the screwing length of the internal thread 4311 of the adjusting nut 4...

Embodiment 2

[0065] Such as Figure 1~Figure 9 As shown, an adjustable discectomy knife set of this embodiment includes the puncture set of Embodiment 1, and also includes a positioning needle 1, a puncture expansion system 2, and a trephine system 3. The puncture expansion system 2 includes a first expansion Guide sleeve 21 and working pipe 25, the first expansion guide sleeve 21 is provided with an inner hole for sheathing the positioning pin 1, and the working pipe 25 is provided with a ring saw system 3 and a puncture set 4 for insertion Bore.

[0066] The puncture expansion system 2 also includes a second expansion guide sleeve 22, a third expansion guide sleeve 23, and a fourth expansion guide sleeve 24. The diameter of the inner hole of the second expansion guide sleeve 22 is the same as that of the first expansion guide sleeve. The outer diameter of the guide sleeve 21 matches, the diameter of the inner hole of the third expansion guide sleeve 23 matches the outer diameter of the ...

Embodiment 3

[0097] Such as Figure 10 , Figure 11 As shown, the difference between this embodiment and Embodiment 2 is that: one end of the working pipeline 25 in this embodiment is provided with an inclined curved surface port 251 .

[0098] The inclined curved port 251 enables the working pipe 25 to be directly inserted into the intervertebral disc tissue for internal fixation, reducing bleeding and preventing movement.

[0099] Preferably, the other end of the working pipeline 25 is provided with a direction rod 252, the setting of the direction rod 252 is convenient for the operator to judge the orientation of the inclined curved surface port 251 of the working pipeline 25, so that the positioning of the working pipeline 25 is accurate; at the same time, it can be used The small hammer strikes the direction rod 252, so that the working pipeline 25 can be better inserted into the intervertebral disc tissue.

[0100] Features that are not explained in this embodiment are explained in...

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Abstract

The invention relates to the technical field of discectomy knives, in particular to a puncture kit and an adjustable discectomy knife kit. The puncture kit comprises a blade mechanism, a propelling rod and an adjustment mechanism used for adjusting the size of a knife edge of the blade mechanism, wherein the propelling rod is connected with the blade mechanism and the adjustment mechanism respectively. The adjustable discectomy knife kit comprises a positioning needle, a puncture expansion system, a trephining system and the puncture kit, wherein the puncture expansion system comprises a first expansion guide sleeve and a working pipeline; the first expansion guide sleeve is provided with an inner hole used for sleeving the positioning needle; and the working pipeline is provided with an inner hole for insertion of the trephining system and the puncture kit. When in an operation, the knife edge can be adjusted to have the most proper size according to the actual situation for accurate cutting; the cutting operation is accurate and safe; and the adjustable discectomy knife kit can be applied to all lumbar disc herniation operations and posterior lumbar interbody fusion operations.

Description

technical field [0001] The invention relates to the technical field of intervertebral discectomy knife, in particular to a puncture set and an adjustable intervertebral discectomy knife set. Background technique [0002] The intervertebral disc is located between the two vertebral bodies of the human spine. It is divided into the nucleus pulposus in the central part, which is a jelly-like substance rich in elasticity; the fibrous ring in the surrounding part is arranged in concentric circles by multi-layer fibrocartilage rings; the upper and lower ends of the intervertebral disc connect the vertebral body One layer of transparent tissue is called the cartilage plate, one side of the cartilage plate is closely connected with the fibrous annulus, and the other side is connected with the vertebral body, which has the function of protecting the nucleus pulposus from the upper and lower sides. The annulus fibrosus of the neck and waist is thick in the front and thin in the back, ...

Claims

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Application Information

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IPC IPC(8): A61B17/34A61B17/3205A61B17/56
Inventor 雷高
Owner 雷高
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