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Fracture replacer and application method thereof

A technology of reducer and bone nail, which is applied in the field of orthopedic instruments, can solve problems such as broken nails cannot be unscrewed and slipped, and achieve the effects of avoiding breaking again, ensuring the expansion effect, and increasing the strength

Active Publication Date: 2019-09-17
LISHUI PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under this structure, only the clamping force of the claw spring is used to clamp the broken nail. When the broken nail is unscrewed, slipping is likely to occur between the claw spring and the broken nail, resulting in the failure of the broken nail to be unscrewed.

Method used

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  • Fracture replacer and application method thereof
  • Fracture replacer and application method thereof
  • Fracture replacer and application method thereof

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Embodiment Construction

[0021] like Figure 1-7 As shown, a fracture reducer and its use method include a holding part 1, a clamping part, a nail taking part and a driving part. The holding part 1 is made of plastic and has a cylindrical structure, which is convenient for the hand Hold, the outer surface of the grip 1 is evenly spaced with a plurality of anti-slip lines 11, the anti-slip lines 11 can be formed by directly protruding outward from the outer surface of the grip 1, and the anti-slip lines 11 are arranged in an arc-shaped structure; The fastening part is fixed at the lower part of the holding part 1, and is used to fix the outer surface of the compressed bone screw when the broken bone screw 2 is taken out; into the bone nail to cooperate with the fixed anti-rotation; specifically, the clamping part includes a plurality of clamping arms 31 and a tightening ring 32 that can move up and down relative to the clamping arms. The first end 311 connected to the part 1 and the second end 312 tha...

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Abstract

The invention discloses a fracture replacer and an application method thereof. The fracture replacer comprises a bone nail and a nail taking machine which cooperates with the bone nail, wherein the bone nail comprises an outer nail and an inner nail located in the outer nail; and a plurality of rotating stopping convex parts are arranged on the outer nail. The application method comprises the following steps of (1) when the bone nail is broken in the taking-out process, firstly taking out the inner nail in the outer nail, so as to enable the outer nail to be hollow; (2) inserting a nail taking sleeve in the outer nail, moving a jack piece downwards to support an elastic piece open outwards, and enabling a raised line and the rotating stopping convex parts to be in rotating stopping cooperation; and (3) driving a clamping component to clamp the outer nail, and then rotating a grasping piece to drive the outer nail to rotate, so that the outer nail is taken out from an affected part. According to the fracture replacer disclosed by the invention, through the cooperation of the clamping component and the outer wall of the bone nail, the bone nail is clamped; a nail taking component is in rotating stopping cooperation with the inner wall of the bone nail, so that the situation that slipping cannot appear between the fracture replacer and the bone nail is guaranteed, and the nail taking effect is good.

Description

technical field [0001] The invention belongs to the technical field of orthopedic instruments, and in particular relates to a fracture reducer and a using method thereof. Background technique [0002] Clinically, bone nails and steel plates are usually used to fix or reset the fracture site. During the process of taking out the bone nails, the bone nails are prone to breakage. Aiming at the needs of taking out broken nails, Chinese patent CN203436389U discloses a "Orthopedic Nail Removal Device", which includes a claw spring part 1, a clamping part 2 and a nut. After clamping, the clamping part of the tool is rotated to unscrew the broken nail. However, under this structure, the clamping of the broken nail is only realized by the clamping force of the claw spring. When the broken nail is unscrewed, slipping is likely to occur between the claw spring and the broken nail, resulting in the failure of the broken nail to be unscrewed. Contents of the invention [0003] In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/92
CPCA61B17/92A61B2017/922
Inventor 范秋平李浩吴叶芳
Owner LISHUI PEOPLES HOSPITAL
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