Pelvic fracture microinvasive intramedullary fixation device

A fixation device and intramedullary nail technology, applied in the field of orthopedic medical devices, to achieve the effects of flexible manipulation, promotion of fracture healing, and less periosteal peeling

Inactive Publication Date: 2015-09-09
陈卫 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of minimally invasive technology, the use of minimally invasive surgery in orthopedic surgery is becoming more and more common, but there is no precedent for the use of intramedullary fixation in the surgical treatment of pelvic ring and acet

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  • Pelvic fracture microinvasive intramedullary fixation device
  • Pelvic fracture microinvasive intramedullary fixation device
  • Pelvic fracture microinvasive intramedullary fixation device

Examples

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Example Embodiment

[0020] The invention includes a guide wire, a guide sleeve, a soft drill, an arc-shaped intramedullary nail 4, an arc-shaped screw guide plate 8, a guide pin 10, a fixing screw 7, an intramedullary nail tail cap 6, a connecting rod 11, and a reconstruction steel plate 14.

[0021] The guide wire and the guide sleeve of the present invention are curved arcs that match the curvature of the preset pelvic intramedullary tunnel. The outer diameter of the guide sleeve matches the preset inner diameter of the pelvic intramedullary tunnel. The drill is located in the guide sleeve, and the guide wire is threaded on the central axis of the soft drill. During the operation, first a soft drill is guided by the guide wire and the guide sleeve to drill a pelvic intramedullary tunnel on the pelvis according to the preset pelvic intramedullary tunnel path, and then a curved intramedullary nail 4 is inserted into the tunnel. Fix the fracture site.

[0022] figure 1 It is shown that the arc-shaped ...

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Abstract

The invention provides a pelvic fracture microinvasive intramedullary fixation device and belongs to the technical field of orthopedic medical instruments. The pelvic fracture microinvasive intramedullary fixation device is used for performing intramedullary reduction fixation on the pelvic fracture. The following technical scheme is adopted: a pelvic intramedullary tunnel is designed in advance under pelvic CT three-dimensional reconstruction; a guide wire and a guide sleeve are fabricated according to the bending radian of the pelvic intramedullary tunnel; the pelvic intramedullary tunnel is drilled by use of a soft drill under the guidance of the pre-bent guide wire and the perspective of a C-shaped arm; a cambered intramedullary nail is implanted into the pelvic intramedullary tunnel along the guide wire and fastened and connected with the pelvis by use of fixing screws; after the fracture is cured, an opening is formed at the pubic tubercle and then the cambered intramedullary nail is taken out. The pelvic intramedullary fixation adopted by the pelvic fracture microinvasive intramedullary fixation device is the innovation of the pelvic fracture fixation surgery; the intramedullary fixation device and method are capable of realizing perfect reduction fixation of the pelvic ring and the acetabular fracture under the cooperation of direct sight and C-shaped arm irradiation, convenient to operate and firm in fixation; the operation time and the recovery time are greatly shortened, the treatment effect is improved and the pain of a patient can be alleviated.

Description

technical field [0001] The invention relates to an intramedullary fixation device for open reduction and fixation of pelvic fractures, belonging to the technical field of orthopedic medical devices. Background technique [0002] Pelvic internal fixation is a new technology in the field of orthopedic trauma treatment in recent years, and it also shows a new direction for the development of orthopedic surgery medical technology. Compared with traditional surgery, intramedullary bone treatment of the pelvis has the advantages of better support and less damage to surrounding tissues, and is more and more popular among doctors and patients. The development of contemporary science and technology provides a strong guarantee for intramedullary fixation. Under the guidance of X-ray machines, CT and advanced electronic and optical equipment, doctors can use special instruments and various instruments to perform operations. With the development and progress of science and technolog...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/80
CPCA61B17/00234A61B17/725A61B17/8066A61B2017/564
Inventor 杜晨光陈伟侯志勇张英泽吕红芝魏宁常文利
Owner 陈卫
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