Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin

A pedicle and puncture needle technology, applied in the field of medical devices, can solve the problems of large soft tissue damage and large advance resistance of Schan screws, etc., and achieve the effect of increasing aesthetics, small resistance, and small damage

Inactive Publication Date: 2004-10-27
THE FIRST PEOPLES HOSPITAL OF CHANGZHOU
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Schanz screw is rotated into the human body. Since the thread part of the Schanz screw is long, the soft tissue around the Schanz screw is repeatedly cut by the thread during the puncture process, so that the soft tissue is entangled on the thread part of the Schan screw, which makes the advance resistance of the Schan screw very small. Large, with large soft tissue damage

Method used

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  • Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin
  • Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin
  • Restorer for vertebral body and puncture needle for pedicle of vertebral arch by prying operation through skin

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Effect test

Embodiment 1

[0034] Referring to the accompanying drawings, the embodiment has two pedicle puncture needles 1, a handle 5, two extension rods 2, a connecting rod 3 and two combined clamping heads 4. Also equipped with fastening tools.

[0035] See figure 1 , the total length of the pedicle puncture needle 1 is 153 mm, the middle part of the pedicle puncture needle 1 is in the shape of a truncated cone, the length L is 36 mm, the diameter D of the large end of the middle part of the truncated cone is 6 mm, and the diameter d of the small end is 5 mm. The taper is 1:36. The rear part 1-3 is a cylinder with a diameter of 6mm. The length of the front part 1-1 of the pedicle puncture needle is 15 mm, and the front part 1-1 is an extension of the middle part of the truncated cone shape, and an external thread is processed on the front part of the truncated cone shape; Pyramidal or conical. The rear part of the pedicle puncture needle 1 has a scale line 1-3-1; a positioning plane 1-3-2 and a...

Embodiment 2

[0043] refer to figure 1 , the total length of the pedicle puncture needle 1 is 160 mm, the middle part of the pedicle puncture needle 1 is in the shape of a truncated cone, the length L is 45 mm, the diameter D of the large end of the middle part of the shape of a truncated cone is 6 mm, and the diameter d of the small end is 5 mm. The taper is 1:45. The rear part 1-3 is a cylinder with a diameter of 6mm. The front part 1-1 of the pedicle puncture needle is an extension of the middle part of the truncated cone, the length of the front part 1-1 is 15mm, and an external thread is processed on the front part of the truncated cone. All the other are identical with embodiment 1.

Embodiment 3

[0045] As shown in Figure 20, the total length of the pedicle puncture needle 1 is 150 mm, the middle part of the pedicle puncture needle 1 is in the shape of a truncated cone, the length L is 30 mm, the diameter D of the large end of the middle part of the truncated cone is 6 mm, and the diameter of the small end is d 5mm, the taper is 1:30. The rear part 1-3 is a cylinder with a diameter of 6mm. The front part 1-1 of the pedicle puncture needle is a cylinder, the length of the front part 1-1 is 14 mm, and the front part 1-1 of the cylinder is processed with threads. All the other are identical with embodiment 1.

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Abstract

A percutaneous vertebral body restoring apparatus is composed of two puncture needles with screwed front end for vertebral pedicle, an extending rod for increasing the length of said puncture needle in order to increase force arm, a connecting rod for locating said two puncture needles, and two combined campers for connecting said puncture needle to said connecting rod. Its advantages are low resistance for turning said needle, and less damage to soft tissue.

Description

technical field [0001] The invention relates to a medical device, which is a vertebral body reset device. Background technique [0002] For vertebral compression fractures, the traditional treatment method is bed rest, which takes a long time to recover, and is prone to complications especially for the elderly. Vertebroplasty is a method of percutaneous injection of bone cement into the vertebral body. It was first used clinically in my country in 2000. Although percutaneous vertebroplasty can solve the pain caused by osteoporotic compression fractures and stabilize the vertebral body , so that patients get out of bed as soon as possible, but the existing kyphosis can not be resolved regrettably. In 1998, it was reported abroad that a cannula was introduced into the vertebral body, and an inflatable airbag bone tamping rod was inserted through the cannula to expand the collapsed vertebral body and produce a cavity. Then inject bone cement under a lower pressure. This techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56
Inventor 丁亮华郭彩霞赵爱民
Owner THE FIRST PEOPLES HOSPITAL OF CHANGZHOU
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