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Knock-in type anti-rotation bone grafting nail

An anti-rotation and bone nail technology, applied in the field of medical devices, can solve problems such as unstable fixation, acetabular prosthesis affecting postoperative efficacy, and nail caps cannot be fully implanted into the bone surface, etc.

Pending Publication Date: 2022-01-25
CHANGCHUN SINOBIOMATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly the following problems in the replacement of total acetabular prosthesis: 1. In total hip arthroplasty, the effective implantation of acetabular prosthesis is an important factor affecting the postoperative curative effect
After the operation, the prosthesis will become loose and not firmly fixed; at the same time, there will be a problem that the nail cap cannot be fully implanted below the bone surface

Method used

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  • Knock-in type anti-rotation bone grafting nail
  • Knock-in type anti-rotation bone grafting nail
  • Knock-in type anti-rotation bone grafting nail

Examples

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preparation example Construction

[0033] In the preparation of the knock-in anti-rotation bone graft nail, the material is a polymer material, which can be a natural polymer material or a synthetic polymer material, which should also belong to the description scope of this embodiment.

[0034] Preferably, the material of the knock-in anti-rotation bone graft screw is polylactic acid or polyether ether ketone among polymer materials.

[0035] Further, the inside of the knock-in type anti-rotation bone graft nail is set as a hollow structure.

[0036] Specifically, a hollow channel 101 is provided inside the nail shank body 10 , and the hollow channel 101 passes through the head end and the tail end of the nail shank body 10 .

[0037] In this embodiment, the hollow channel 101 has multiple functions, including but not limited to connecting the air pressure at both ends, allowing other equipment to penetrate and then clamping and moving, allowing other equipment or materials to pass through and transport, and we...

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Abstract

The invention discloses a knock-in type anti-rotation bone grafting nail. The knock-in type anti-rotation bone grafting nail comprises a straight rod-shaped nail rod body, wherein the tail end of the nail rod body is a flat knocking end surface, a drilling head is arranged at the head end of the nail rod body, a plurality of barbs are arranged on the outer wall of the nail rod body, and the drilling head is in a variable cross-section circular truncated cone shape with the cross section gradually expanding from head to tail. The knock-in type anti-rotation bone grafting nail is implanted in a knock-in mode, so that a bone is anchored at the defect position of a posterior acetabular wall, connection is firm, and foreign body sensation cannot be generated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a knock-in anti-rotation bone graft screw. Background technique [0002] Developmental Dislocation of the Hip (DDH) is one of the common complex diseases in orthopedic surgery. Due to acetabular dysplasia and hip joint asymmetry, the final outcome is often the secondary hip bone. Arthritis, requiring total hip replacement surgery. [0003] In the prior art, total hip joint replacement is usually performed in a manner of cooperating an acetabular prosthesis and a spacer. Among them, the spacer is used to complement the hip bone defect. The existing acetabular cup has a double-cup acetabulum, an acetabular rest with loops that can be fixed with nails, and some need to use bone cement. The amount of supplementation needs to rely on nail fixation. At present, there are mainly the following problems in total acetabular prosthesis replacement: 1. In total hip arthroplasty, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/68A61B17/86
CPCA61B17/683A61B17/8605A61B17/8625A61B17/864A61B2017/564A61B2017/8655
Inventor 温明哲张月陶茹高毅
Owner CHANGCHUN SINOBIOMATERIALS
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