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Joint retractor in ankle joint operation

A technology for ankle joints and joints, applied in the field of joint retraction devices during ankle joint surgery, can solve problems such as insufficient ankle joint retraction and unbalanced retraction, reduce iatrogenic complications, prevent unbalanced retraction, Accurate effect of retraction gap

Pending Publication Date: 2021-05-25
XIAN HONGHUI HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a joint distraction device in ankle joint surgery to solve the problems of insufficient or unbalanced distraction of the ankle joint in the current operations such as talar cartilage injury, ankle joint replacement, talar prosthesis replacement and ankle joint fusion.

Method used

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  • Joint retractor in ankle joint operation
  • Joint retractor in ankle joint operation
  • Joint retractor in ankle joint operation

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Experimental program
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Embodiment

[0026] see Figure 1-Figure 3 The joint retraction device in the ankle joint operation includes a bottom frame. The bottom frame is composed of bottom sliding rods 1 on both sides and cross bars 2 at the front and rear ends. Vertical pedals 3 are set on the cross bars 2 at the rear end and cross bars 2 at the front Leg support mechanism 4; the vertical pedal 3 includes a frame and a herringbone grid arranged in the frame, the lower part of the herringbone grid is connected with the heel support mechanism 5, the upper part of the herringbone grid is connected to the toe clip 6, and the fishbone The middle part of shaped grid connects two groups of calcaneus fixing Kirschner wire screws 7; the herringbone shaped grid is conveniently fixed on the vertical pedal 3 by the adjustable position of each part.

[0027] The bottom frame is connected with a retraction mechanism, which includes a threaded rod cover 8, a threaded push rod 9, a threaded rod knob 10, a horizontal sliding rod ...

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Abstract

The invention discloses a joint retractor in ankle joint operation. The joint retractor comprises bottom sliding rods on the two sides and a bottom frame formed by transverse rods at the front end and the rear end, a vertical pedal is arranged on the transverse rod at the rear end, and a leg supporting mechanism is arranged on the transverse rod at the front end; the vertical pedal comprises a frame and a fishbone-shaped grid arranged in the frame, the lower part of the fishbone-shaped grid is connected with a heel support mechanism, the upper part of the fishbone-shaped grid is connected with a toe clip, and the middle part of the fishbone-shaped grid is connected with two groups of calcaneus fixing kirschner wire screws; the bottom frame is connected with the retraction mechanism, and the retraction mechanism comprises a threaded rod outer sleeve, a threaded push rod, a threaded rod knob, a transverse sliding rod, a vertical rod and tibia fixing kirschner wire screws; the mode of the combined external fixation retractor frame is adopted, the calcaneus and the tibia are fixed to the retractor through kirschner wire screws, it is guaranteed that in the operation, retraction is stable, gaps are accurate, and the side effect of violent retraction is avoided.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a joint retraction device during ankle joint surgery. Background technique [0002] Ankle osteoarthritis is a progressive disease, mainly manifested as degeneration of articular cartilage, and often accompanied by varus or valgus deformity of the ankle joint, bone and soft tissue injury of the talus, or avascular necrosis of the talus. For early talus osteochondral injury or talus avascular necrosis, arthroscopic debridement and microfracture technique can be used for treatment. However, for the range of damage to the soft talus > 1.5cm 2 Osteochondral injuries of the talus often require open surgery to expose and retract the ankle joint to expose the desquamated or avascular necrotic area of ​​the talus. There is a consensus that joint fusion or replacement is required for end-stage patients. During ankle joint replacement and ankle fusion, it is also nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/02A61B90/14
CPCA61B17/025A61B90/14
Inventor 梁晓军杨杰
Owner XIAN HONGHUI HOSPITAL
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