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Outer fixing device for minimally invasive surgery

An external fixator and minimally invasive surgery technology, applied in the fields of surgery, medical science, etc., can solve the problems of lack of sliding prying effect, complicated surgical operation, coxa varus, etc., to achieve flexible and diverse adjustment methods, and ensure the surgical effect and performance. good effect

Inactive Publication Date: 2013-06-26
SUZHOU IDEAL MEDICAL APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In clinical application, the traditional hip fracture external fixator has the following shortcomings: 1. It is bulky; 2. It lacks sufficient sliding and prying effect, which often leads to the occurrence of coxa varus; 3. The trauma is often large and the operation is complicated.

Method used

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  • Outer fixing device for minimally invasive surgery
  • Outer fixing device for minimally invasive surgery

Examples

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Effect test

Embodiment

[0019] Such as figure 1 , figure 2 As shown, a kind of external fixator for minimally invasive surgery includes a fixed frame body, and several external fixation nails 1 are respectively arranged on both sides of the fixed frame body, and both the fixed frame body and the external fixation nails 1 are made of titanium alloy material made.

[0020] In this embodiment, the fixed frame body includes several fixed rods 4 parallel to each other, and adjacent fixed rods 4 are connected as a whole by several cross-connectors 3 . Among them, the most common form is that the number of fixed rods is two, and the number of cross-connectors is also two. The cross-connector and the fixed rod are flexibly connected, and the cross-connector is arranged on the fixed frame body inside the outer fixing nail. .

[0021] There are many ways for the cross coupler, one of which is the connecting rod 2 sleeved on the fixed rod, and the connecting rod 2 is movably connected to the fixed rod by a ...

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Abstract

The invention discloses an outer fixing device for minimally invasive surgery. The outer fixing device for minimally invasive surgery is characterized by comprising a fixed frame body. Two sides of the fixed frame body are respectively provided with multiple outer fixing nails. The fixed frame body and the outer fixing nails are made of titanium alloy. As an improvement, the fixed frame body comprises multiple fixed rods which are parallel to each other. Adjacent fixed rods are connected into wholes through multiple sway bracing devices. The outer fixing nails are movably connected on the fixed rods. The titanium alloy fixed rods, the titanium alloy sway bracing devices and the titanium alloy outer fixing nails are used by the outer fixing device for minimally invasive surgery. The sway bracing devices and the outer fixing nails are movably connected on the fixed rods through nuts. The outer fixing device for minimally invasive surgery is good in performance, sufficient in sliding poking effect, capable of effectively maintaining outward expansion position of an end near to a hip fracture, diverse and flexible in adjustment manner, fastened in fixation and suitable for complicated fracture conditions.

Description

technical field [0001] The invention belongs to the field of fixation frames for surgery, in particular to an external fixator for minimally invasive surgery. Background technique [0002] Minimally invasive fracture surgery uses a microscope or a high-power magnifying glass to enlarge the surgical field of view for surgical operations, and performs "keyhole surgery" through the smallest possible skin incision, so that orthopedic surgery can implement the most effective treatment with the smallest iatrogenic damage. At present, the surgical treatment of hip fractures is mainly based on internal fixation. For elderly patients with hip fractures and osteoporosis, the bone has insufficient holding force on the bone screws, coxa varus, shortening of the affected limb, medial displacement of the distal segment of the fracture, and cutting of the lag screws after internal fixation The incidence of complications such as cortical bone screw pullout is greatly increased, which can e...

Claims

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Application Information

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IPC IPC(8): A61B17/60
Inventor 李建祥
Owner SUZHOU IDEAL MEDICAL APPLIANCE
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