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Auxiliary device used in PFNA (proximal femoral nail anti-rotation) internal fixation surgery

An auxiliary device and intramedullary nail technology, which can be applied in the directions of internal fixator, surgery, fixator, etc., can solve the problems of difficult positioning of the nail entry point and the inability of the spiral blade to be accurately placed in the femoral neck at one time.

Active Publication Date: 2016-06-01
高开拓
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Problems solved by technology

[0005] The purpose of the present invention is to provide an auxiliary device in the intramedullary nail internal fixation operation to solve the difficulty in positioning the nail entry point of the PFNA in the internal fixation operation of the PFNA insertion device in the prior art, and the helical blade cannot be accurately positioned at one time. Problems with placement in the femoral neck

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  • Auxiliary device used in PFNA (proximal femoral nail anti-rotation) internal fixation surgery
  • Auxiliary device used in PFNA (proximal femoral nail anti-rotation) internal fixation surgery
  • Auxiliary device used in PFNA (proximal femoral nail anti-rotation) internal fixation surgery

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[0036] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses an auxiliary device used in PFNA (proximal femoral nail anti-rotation) internal fixation surgery and relates to the technical field of minimally invasive orthopaedic surgery instruments so as to solve the problems that an existing implantation instrument can not position the PFNA entry point easily, and a screw blade can not be accurately implanted into the neck of femur at a time.The auxiliary device used in PFNA internal fixation surgery comprises a positioning and guiding base plate and a guide pin positioning and guiding mechanism connected with the positioning and guiding base plate through a positioning rod assembly.The positioning and guiding base plate is arranged above the hip joint and corresponds to a PFNA to be implanted into the femur in position in the vertical direction, and the positioning and guiding base plate can be used for preliminarily determining the implantation position, depth and diameter of the PFNA.The guide pin positioning and guiding mechanism can be used for further accurately determining the implantation position and depth of the PFNA and a screw blade.The positioning rod assembly can be used for adjusting the implantation direction of the screw blade.The auxiliary device is mainly applied to closed reduction PFNA internal fixation treatment of femoral intertrochanteric fractures.

Description

technical field [0001] The invention relates to the technical field of orthopedic minimally invasive surgical instruments, in particular to an auxiliary device for intramedullary nail internal fixation. Background technique [0002] The incidence of intertrochanteric fractures accounts for about 3% to 4% of all fractures and about 35.7% of adult hip fractures. Population aging and osteoporosis are the main reasons for the high incidence of intertrochanteric fractures. With the development of population aging, the treatment of intertrochanteric fractures faces great challenges. [0003] At present, intramedullary nailing is commonly used in the treatment of femoral intertrochanteric fractures due to the uniform loading of the intramedullary nail, more reasonable mechanics, percutaneous operation, and less blood loss. The proximal femoral nail antirotation (proxmialfemoralnail antirotation, PFNA) is a new type of intramedullary nail, because it has the advantages of high fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90A61B17/72A61B17/76
CPCA61B17/72A61B17/74A61B17/88A61B2017/564A61B17/90
Inventor 高开拓周松叶青合赵强臧建国郭奉波
Owner 高开拓
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