Calcaneal intramedullary fixation system and auxiliary placement instruments

A fixation system and bone marrow technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of large wound, wound non-healing, marginal skin necrosis, etc.

Inactive Publication Date: 2017-02-15
SHENZHEN ZHONGHENGDE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Based on this, the present invention aims to provide a calcaneal intramedullary fixation system and auxiliary implantation instruments, which are used to solve the problem of large wounds, slow r

Method used

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  • Calcaneal intramedullary fixation system and auxiliary placement instruments
  • Calcaneal intramedullary fixation system and auxiliary placement instruments
  • Calcaneal intramedullary fixation system and auxiliary placement instruments

Examples

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Embodiment Construction

[0032] Such as figure 2 and image 3 As shown in , an embodiment of the present invention provides a calcaneal intramedullary fixation system, which includes a calcaneal intramedullary nail 1 and a fixation screw 2 . The auxiliary implanting instrument is used for assisting placement and positioning of the calcaneal intramedullary nail 1 and the fixation screw 2 in each bone block after the calcaneal fracture in the calcaneal intramedullary fixation system. The auxiliary insertion instrument includes a connecting rod 3 , a locking rod 4 , a positioning guide bracket 5 , a fastening nut 6 and a guide sleeve 7 .

[0033] Also refer to Figure 4 , the calcaneal intramedullary nail 1 is configured as a cylindrical rod 11 . The tail end of the rod 11 has a radially extending concave groove 12, the groove 12 is used to receive the convex bayonet 42 at the head end of the locking rod 4 of the auxiliary insertion instrument, so as to lock the calcaneal intramedullary nail 1 and th...

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Abstract

The invention relates to a calcaneal intramedullary fixation system and auxiliary placement instruments of the calcaneal intramedullary fixation system. The calcaneal intramedullary fixation system comprises a calcaneal intramedullary nail and fixing screws, wherein a clamping groove extending radially and an inner threaded hole extending axially are formed in the tail end of the calcaneal intramedullary nail, at least two through holes are further formed in the calcaneal intramedullary nail, the through holes are used for accommodating the fixing screws, the auxiliary placement instruments are used for locating and placing the calcaneal intramedullary nail and the fixing screws, and the auxiliary placement instruments comprise a connecting rod, a locking rod, a locating guide bracket, a fastening nut and a guide sleeve. The auxiliary placement instruments can be used for locating and placing the calcaneal intramedullary nail and the fixing screws used for treating calcaneal fracture, the defect that the wound is large in the traditional treatment for calcaneal fracture is overcome, and the minimally invasive treatment is realized.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a calcaneal intramedullary fixation system and auxiliary implantation devices applied to the minimally invasive treatment of calcaneal fractures. Background technique [0002] Intra-articular fractures of the calcaneus are the result of a high-energy injury, usually resulting from a fall from a height that concentrates the patient's weight on the heel. Calcaneal fractures are the most common of tarsal fractures, accounting for approximately 60% of all tarsal fractures and 2% of all fractures. The position of the foot at the time of injury, the size of the impact force, and the bone quality are all important factors that determine the degree of fracture comminution and the location of the fracture line. [0003] The Sanders classification is a widely used clinical classification method for calcaneal fractures. Such as figure 1 As shown, according to the CT30° semi-coronal scan, t...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/92
CPCA61B17/7241A61B17/00234A61B17/725A61B17/7291A61B17/921A61B2017/00831
Inventor 张瑞元
Owner SHENZHEN ZHONGHENGDE TECH DEV CO LTD
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