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Calcaneal sustentaculum tali guide and using method thereof

A calcaneal load bearing and guider technology, applied in fixers, medical science, surgery, etc., can solve problems such as easy slippage of the positioning point of the calcaneus, less loading of talus screws, positioning errors, etc., and shorten the operation time time, improve safety, and reduce complications

Pending Publication Date: 2019-03-22
青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are few literatures reporting the method of accurately inserting the sacral screw, and all of them use the sacral surface mark as the fulcrum, and start from the lateral wall of the foot to insert the positioning pin in the direction of the stenting screw. The disadvantage is that the sacral The positioning point is prone to slipping, resulting in wrong positioning and guidance

Method used

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  • Calcaneal sustentaculum tali guide and using method thereof
  • Calcaneal sustentaculum tali guide and using method thereof
  • Calcaneal sustentaculum tali guide and using method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Such as Figure 1-3 As shown, a calcaneal load-carrying guider includes a handle 10, a U-shaped bracket with an opening away from the direction of the handle 10, and positioning pins 21, guide pins 22 and fixing pins (not shown in the figure) matched with the U-shaped bracket. . The U-shaped bracket is composed of an inner arm and an outer arm. The inner arm includes an inner support handle 1 and an inner guide sleeve 4 fixed on the top of the inner support handle 1. The outer arm includes an outer support handle 2 and an inner guide sleeve fixed on the outer support handle. 2. The outer guide sleeve 7 at the top, the bottom ends of the inner support handle 1 and the outer support handle 2 are all connected to the top end of the handle 10. The inner support handle 1 and the outer support handle 2 are symmetrically provided with a number of perforations 12 to facilitate the weight reduction of the calcaneus load-carrying guide.

[0045] The bottom end of the inner supp...

Embodiment 2

[0058] The difference from Embodiment 1 is that the fixed connection between the inner support handle 1 and the outer support handle 2 is reversed. The bottom end of the outer support handle 2 is provided with a fixing hole, the bottom end of the inner support handle 1 is provided with a boss that can be inserted into the fixing hole, and the lower side wall of the bottom end of the outer support handle 2 is provided with a Guide hole I, the lower side wall of the boss is provided with a guide hole II at the corresponding position; the inner wall of the guide hole I is provided with an internal thread, and the top of the handle is provided with a protruding rod coaxial with the handle , the diameter of the cross-sectional circle of the protruding rod is smaller than the diameter of the cross-sectional circle of the handle, and the outer wall of the protruding rod is provided with an external thread that matches the internal thread.

Embodiment 3

[0060] Different from Embodiment 1, the central axis of the positioning hole 5 is parallel to the central axis of the guide channel 6 .

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Abstract

The invention discloses a calcaneal sustentaculum tali guide which comprises a handle, a U-shaped support with an opening away from the direction of the handle, a positioning needle, a guiding needleand a fixing needle. The positioning needle, the guiding needle and the fixing needle are matched with the U-shaped support, the U-shaped support is composed of an inner side arm and an outer side arm, the inner side arm comprises an inner supporting handle and an inner guide sleeve fixed at the top end of the inner supporting handle, the outer side arm comprises an outer supporting handle and anouter guide sleeve fixed at the top end of the outer supporting handle, a positioning hole positioned above and used for a subtalar joint positioning needle to penetrate in and a guiding passage positioned below and used for a sustentaculum tali guiding needle to penetrate in, the outer guide sleeve comprises a small U-shaped groove with an opening away from the outer supporting handle, positioning tubes capable of allowing a screw to screw in are arranged on two sides of the small U-shaped groove, a screw is penetratingly arranged in each positioning tube, and the inside of each screw allowsthe fixing needle to penetrate in. The guide can be simply and accurately inserted into a determined position to accurately reset and fix foot bone fracture, so that operation safety is improved.

Description

technical field [0001] The invention belongs to the technical field of fracture treatment equipment, and in particular relates to a calcaneal load-carrying talus process guide and a method for using the same. Background technique [0002] Calcaneal fractures are the most common tarsal fractures, accounting for 60% of tarsal fractures, of which 75% involve the subtalar middle joint. Anatomical reduction of the subtalar middle articular surface after recovery from surgical treatment is the main purpose of intra-articular calcaneal fracture treatment . In the current treatment, due to the particularity of the anatomy of the calcaneus, the talus-carrying process is an important fixation point in the internal fixation of fractures. However, how to perform accurate screw placement has become a difficult point in the operation. [0003] The calcaneous talus is a special structure of the calcaneus. The calcaneus talus is a bony protrusion on the inside and above the front of the ca...

Claims

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Application Information

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IPC IPC(8): A61B17/90
CPCA61B17/8897A61B17/90
Inventor 刘金伟朱朝晖杨斌刘得恒张增方
Owner 青岛山大齐鲁医院(山东大学齐鲁医院(青岛))
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