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Spinous process distraction device

A spinal spinous process and spinous process technology, applied in the field of medical machinery, can solve problems such as spinous process damage, achieve the effect of ensuring stability and avoiding spinous process dislocation damage

Active Publication Date: 2021-10-19
常熟市第二人民医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the distance between two adjacent spinous processes is opened in the above scheme, the spinous processes are subjected to lateral thrust, which may cause damage to the spinous processes.

Method used

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  • Spinous process distraction device
  • Spinous process distraction device
  • Spinous process distraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1 to Figure 4 As shown, the present invention provides a spinal spinous process 1 expansion device, the expansion device is arranged between two adjacent spinous processes 1, the expansion device includes: a support 2, the support 2 There are two support parts 21 arranged at intervals, each support part 21 is provided with a support groove 211, and the opening directions of the two support grooves 211 are opposite, and the two spinous processes 1 are suitable for one-to-one correspondence extend into the two support grooves 211; the telescopic member 3 is telescopic in the first direction, and the two ends of the telescopic member 3 are connected to the two support members 2 one by one; the driving member 4, The driving member 4 includes a first connecting rod 41 and a second connecting rod 42, one end of the first connecting rod 41 is rotatably connected to one of the supporting members 2, and the other end of the connecting rod is rotated by a rotating...

Embodiment 2

[0043] The difference between this embodiment and the above embodiment is that: the inner surface of the support groove 211 will be provided with a plurality of elastic protrusions 212, and each of the elastic protrusions 212 supports the spinous process 1 on the corresponding side. superior. Thereby, the function of elastic support is played, and the spinous process 1 in the support groove 211 is prevented from being damaged.

[0044] In some embodiments of the present invention, the telescopic member 3 includes a first telescopic part 31 and a second telescopic part 32, and the first telescopic part 31 and the second telescopic part 32 are in one-to-one correspondence with the two telescopic parts. The support member 2 is connected, the first connection part is provided with a telescopic groove 311, the second telescopic part 32 is slidably arranged in the telescopic groove 311, and the positioning part 5 is used to move the second telescopic part 32 The portion 32 is posit...

Embodiment 3

[0053] The difference between this embodiment and the above-mentioned embodiments is that: both the first telescopic part 31 and the second telescopic part 32 can be swingably arranged on the support member 2 on the corresponding side. It can be understood that, by making the first telescopic part 31 swingably arranged on the support member 2 on the corresponding side, the first telescopic part 31 can swing in a certain range in the second direction, avoiding the first telescopic part 31 It is rigidly connected to the support 2 on the corresponding side. By making the second telescopic part 32 swingably arranged on the support member 2 on the corresponding side, the second telescopic part 32 can swing in a certain range in the second direction, avoiding the support of the second telescopic part 32 and the corresponding side Piece 2 is rigidly connected.

[0054] In some embodiments of the present invention, each support part 21 is provided with a slot 213 on the side facing t...

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Abstract

The invention relates to the technical field of medical instruments, and provides a spinous process distraction device. The device comprises: a supporting piece provided with two supporting parts arranged in a spaced mode, wherein each supporting part is provided with a supporting groove, the opening directions of the two supporting grooves are opposite, and two spinous processes are suitable for stretching into the two supporting grooves in a one-to-one correspondence mode; a telescopic piece which can stretch out and draw back in the first direction, wherein the two ends of the telescopic piece are connected with the two supporting pieces in a one-to-one correspondence mode; a driving piece which comprises a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is rotationally connected to one supporting piece, the other end of the first connecting rod is rotationally connected to one end of the second connecting rod through a rotating shaft, and the other end of the second connecting rod is rotationally connected to the other supporting piece; and a positioning piece, wherein two ends of the positioning piece are respectively connected with the telescopic piece and the rotating shaft. The first connecting rod and the second connecting rod are used for pushing the supporting pieces on the corresponding sides to move in the first direction, the spinous process can be prevented from being subjected to thrust in other directions, and therefore spinous process dislocation damage can be avoided.

Description

technical field [0001] The invention relates to the technical field of medical machinery, in particular to a spinal spinous process distraction device. Background technique [0002] In the prior art, the distance between two adjacent spinous processes of the spine is reduced, thereby compressing the spinal cord nerve root, resulting in numbness or pain in the patient. At present, the two adjacent spinous processes are mainly pulled apart by a distraction device The distance between them, for example, the patent document whose application number is CN200610011642.7, discloses a kind of spinal spinous process distracting device, especially refers to a kind of device applied between adjacent spinous processes of the spine, connected with a plurality of rotatable The stretcher is a device for stretching the spinous processes of adjacent vertebrae by relative rotation to increase the included angle so as to stretch the intervertebral space between adjacent vertebrae. A spinal sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7065A61B17/7067
Inventor 潘文明
Owner 常熟市第二人民医院
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