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Medullary space centering device

A technology of medullary cavity and drill bit, which is applied in medical science, bone drill guidance, surgery, etc., can solve the problems of bone cortex damage, achieve the effect of solving the bone cortex damage and reducing the damage of cortical bone penetration

Pending Publication Date: 2017-07-21
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a medullary canal interposition device to solve the problem in the prior art that the bone cortex is easily damaged when taking out the embolus

Method used

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Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] The present invention provides a medullary canal interposition device, please refer to Figure 1 to Figure 6 , the medullary canal centering device includes: a tube sheath 10; an inner core 20, the inner core 20 is rotatably installed in the tube sheath 10; a drill bit 30, the drill bit 30 is installed at one end of the inner core 20, and the drilled end of the drill bit 30 Located on the outside of the sheath 10 to drill into the medullary cavity plug.

[0031] The intramedullary canal interposition device in the present invention includes a sleeve 10 and an inner core 20, and a drill bit 30 is installed at one end of the inner core 20. Since the inner core 20 is rotatably penetrated i...

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Abstract

The invention provides a medullary space centering device which comprises a tube sleeve, an inner core and a drill bit, wherein the inner core passes through the tube sleeve in a rotatable manner; and the drill bit is installed on one end of the inner core, and a drilling end of the drill bit is located on the outer side of the tube sleeve to drill into a medullary space embolus. The medullary space centering device provided by the invention solves the problem in the prior art that backbone cortex would be damaged easily when the embolus is taken out.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a medullary cavity interposition device. Background technique [0002] Cement-based prosthesis replacement is especially suitable for elderly patients and patients with osteoporosis. It has a wide range of applications, including hip joints, knee joints, elbow joints, ankle joints, wrist joints, etc., especially for long prostheses. , such as the femoral stem, prosthetic extension rod prosthesis or prosthetic extension rod part. [0003] With the popularization of this treatment method, joint revision surgery caused by postoperative trauma, infection, aseptic loosening and other reasons has also increased significantly year by year. One of the difficulties in arthroplasty is to get through the atresia of the distal medullary canal of the original prosthesis caused by cement emboli or bone sclerosis at the distal end of the long prosthesis, so that a longer prosthesis can be re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/16A61B17/17
CPCA61B17/164A61B17/17A61B2017/564
Inventor 许奎雪张卫平
Owner BEIJING AKEC MEDICAL
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