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Biological type low-incisura intramedullary nail fixing tail cap

A low-profile, intramedullary nailing technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of too large and too small intramedullary nail density, reduce irritation, short learning curve, Easy-to-use effects

Pending Publication Date: 2019-03-19
KANGHUI MEDICAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the deficiencies in the prior art, to provide a biological low-profile intramedullary nail fixation tail cap, which is a biological low-profile tail cap for closing the center hole at the top of the intramedullary nail to prevent The exposed edge of the tail cap irritates the soft tissue. At the same time, the length of the tail cap and the length of the main nail are freely superimposed, and the new design concept of combining any length of the medullary nail creatively solves the problem of excessive density of intramedullary nail length specifications (one specification per 10mm) or The problem of being too small (one specification per 20mm)

Method used

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  • Biological type low-incisura intramedullary nail fixing tail cap
  • Biological type low-incisura intramedullary nail fixing tail cap
  • Biological type low-incisura intramedullary nail fixing tail cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 , figure 2 As shown, after the fixed tail cap is rotated and screwed into the center hole at the top of the main nail, the height H of the exposed part of the tail cap head 1 can be used as a supplement to the length of the main nail. clothing, such as Figure 5 The installation position is shown. The threaded rod area is inserted into the main nail of the tibial intramedullary nail. The schematic diagram of the main nail of the tibial intramedullary nail is omitted here. The design concept of the biological low-profile intramedullary nail fixed tail cap released in this invention patent , can effectively prevent the edge of the tail cap from irritating the patellar ligament and surrounding soft tissues.

[0038] In this embodiment, the threaded part 2-1 is connected to the main nail of the intramedullary nail, and the lead-in part 2-2 plays a role in correcting the installation direction of the thread to prevent the phenomenon of wrong teeth during ...

Embodiment 2

[0042] Such as image 3 , Figure 4 As shown, after the fixed tail cap is rotated and screwed into the center hole at the top of the main nail, the height H of the exposed part of the tail cap head 1 can be used as a supplement to the length of the main nail. Tie Fu ( Figure 6 ), to avoid irritation to the surrounding ligaments and surrounding soft tissues, and realize the invention concept of biological low profile. The threaded part 2-1 is connected to the main nail of the intramedullary nail, and the leading part 2-2 plays a role in correcting the thread installation direction to prevent wrong teeth. Rotation and screwing in, the structure can be designed as multi-faceted counterbore such as inner hexagonal, plum blossom, etc., holding structure 6 This mechanism mainly realizes the holding function of fixed end cap and special tool, and its design can be internal thread, annular groove, point shape Groove, etc., central through hole 5 The design of the central through h...

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Abstract

The invention discloses a biological type low-incisura intramedullary nail fixing tail cap, relates to an orthopedic surgical implant prosthesis, and particularly relates to a fixing tail cap for closing center holes in the tops of intramedullary nails. The biological type low-incisura intramedullary nail fixing tail cap comprises a tail cap head and a threaded rod. The tail cap head is arranged on the upper portion of the threaded rod. A gap preventive groove is formed in a position between the tail cap head and the threaded rod, and center through holes are formed in the middle of the tail cap head and the middle of the threaded rod. A screwing structure is arranged in the middle of the tail cap head. A holding structure is arranged between the tail cap head and the threaded rod. The threaded rod is divided into a threaded portion and a leading-in portion, and the leading-in portion is arranged on the lower portion of the threaded rod. The tail cap head is provided with tail cap headcoronal planes, the tail cap head coronal planes can be trapezoidal planes or semicircular planes or semicircle and rectangle overlaid planes, or trapezoidal planes and rectangular planes are overlaid to form the tail cap head coronal planes, base angles of the trapezoidal planes range from 15 degrees to 19 degrees, and the semicircular planes are half circles or are circles smaller than the halfcircles.

Description

technical field [0001] The invention relates to a biological low-profile intramedullary nail fixation tail cap, which relates to a prosthesis for bone surgery implantation, in particular to a fixation tail cap for closing the center hole of the top end of the intramedullary nail. Background technique [0002] Intramedullary nail is a commonly used internal fixation device in orthopedics, mainly used for the treatment of long tubular fractures. The general structure of an intramedullary nail includes a main nail, a locking nail, and a tail cap. Usually, after the fracture is reduced and fixed, it is necessary to install a plugging tail cap on the center hole at the top of the main nail, which has two functions: 1. Seal the center top hole of the intramedullary nail to reduce the irritation of the orifice end to the soft tissue, 2. Effectively prevent soft tissue or callus from growing into the center hole at the top of the intramedullary nail, and facilitate the removal of t...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/86
CPCA61B17/72A61B17/8605A61B17/8625A61B17/8665
Inventor 杨兆权秦宗俊刘博
Owner KANGHUI MEDICAL INNOVATION
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