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Power-assisting device for incarcerated intramedullary nail removal operation

A technology of a power assist device and an intramedullary nail, applied in the field of power assist devices, can solve the problems of large impact force, difficult to obtain during removal, slow control and the like

Inactive Publication Date: 2017-03-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impact or hammering removal method commonly used at present has a large impact force, and it is difficult to obtain accurate and slow control of the removal process

Method used

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  • Power-assisting device for incarcerated intramedullary nail removal operation
  • Power-assisting device for incarcerated intramedullary nail removal operation
  • Power-assisting device for incarcerated intramedullary nail removal operation

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Such as figure 1 , figure 2 and image 3 As shown, the present invention includes an operating table and an extraction cylinder.

[0018] The main body of the operating bed is a bed board 102 supported on the lifting base 101, on which backing boards 103, 104, 105, 107, supports 108, support rods 109, head backing boards 103, thigh backing boards 105, shank backing boards 107, The positions of the support 108 and the support rod 109 can be adjusted, and a support platform can be installed on the adjusted support 108 and the support rod 109 for installing the take-out cylinder 106 .

[0019] The take-out cylinder is composed of a cylinder whose main body is an inner cylinder 204 and an outer cylinder 205, a main piston rod 211, a main piston and its sealing guide element 212, a lock nut and a washer 213, and a secondary piston rod 207. , Cylinder head 203 and springs, joints, seals and other components. Among them, the pressure of the hydraulic medium can be connect...

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PUM

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Abstract

The invention relates to a power-assisting device for incarcerated intramedullary nail removal operation. The device is characterized by comprising a specially designed operation bed and one stainless steel removal cylinder; the angle of a head cushioning plate of the operation bed can be adjusted, and upper limb and lower limb cushioning plates can be adjusted, ascended and descended in a segmented mode and are fixed through rapid-adjustment supporting rods; the removal cylinder is composed of an internal cylinder barrel, an external cylinder barrel, a main piston rod and an auxiliary piston rod, the internal cylinder barrel and the external cylinder barrel are connected through a thread and form a stepped face at the front end of the internal cylinder barrel, a pre-compression spring is installed between the stepped face and the left end face of the auxiliary piston rod, and the auxiliary piston rod is pressed at the front end of the external cylinder barrel; the front end of the auxiliary piston rod is an inner conical surface; when the main piston rod moves leftwards, a clamping head at the right end of the main piston rod clamps the head of an intramedullary nail to move leftwards to remove the incarcerated intramedullary nail depending on an external conical surface and the inner conical surface of the auxiliary piston rod. The device greatly reduces possible hurt caused by common impact removal operation, and the possibility of breakage of the intramedullary nail during removal is lowered to the minimum.

Description

technical field [0001] The invention relates to a booster device used in the occasional incarcerated intramedullary nail removal in surgical fracture intramedullary nail fixation. Background technique [0002] Intramedullary nail is one of the commonly used internal fixation devices in orthopedic treatment and repair of femur, tibia and fibula shaft fracture. The healing speed of the fracture site can help patients achieve early functional exercise and weight-bearing training as soon as possible, and help patients recover the physiological functions of their legs as soon as possible. [0003] The time to take out the intramedullary nail implanted in the bone marrow cavity of the human body is generally one to one and a half years after the fracture has completely healed. During this period of time, during the early functional exercise and the gradual recovery of the physiological function of the legs, the intramedullary nail occasionally embeds into the bone wall of the med...

Claims

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Application Information

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IPC IPC(8): A61G13/06A61G13/08A61G13/10A61B17/92
CPCA61G13/06A61B17/921A61B2017/922A61G13/08A61G13/10A61G2203/10A61G2203/70A61G2210/10
Inventor 彭浩军
Owner HEFEI UNIV OF TECH
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