Frame-type external fixator

A frame-type, external fixator technology, applied in medical science, surgery, etc., can solve problems such as fixation instability of the external fixator, and achieve the effects of easy disassembly and assembly, high versatility, and strong materials

Inactive Publication Date: 2012-09-19
FENGXIAN CENT HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to solve the problem that the existing external fixator adopting universal joints is prone to unstable fixation, and proposes a frame-type external fixator, which is redesigned for universal joints, and its stability is much higher than that of While the stability of the existing universal joint structure is achieved, the angle adjustment function is realized, and the need for multi-directional needle threading is also taken into account

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0035] see Figure 1-2 , Figure 5-8 As shown, a frame-type external fixator for calcaneal fracture proposed in Embodiment 1 of the present invention is a triangular-type external fixator, which mainly includes a holding seat, an adapter device and a connecting rod 600, and the connecting rod 600 passes through The transfer device is connected with the holding base, wherein:

[0036] Connecting rod 600

[0037] The connecting rod 600 is a round rod made of carbon fiber composite material. Its material is strong, light in weight, and can transmit X-rays, which avoids the problem of developing under X-rays when filming.

[0038] Holding seat

[0039]The holding seat is a fixture for holding the fixed pin 100 . Since the external fixator in this embodiment is used to treat calcaneus fractures, the two ends of the calcaneus fracture cannot be directly fixed when fixing the calcaneus fracture. Drive in the fixing pin 100, and install the external fixation frame correspondingly...

Embodiment 2

[0053] see Figure 3-4 , Figure 9 As shown, in Embodiment 2, an inter-rod connector is added for relative fixing between the connecting rod 600 and the connecting rod 600 . When the strength of the triangular external fixator is insufficient in Example 1 (ie image 3 structure shown in), or when it is inconvenient to set the connecting rod between the two handles 200 (ie Figure 4 As shown in the joint), the two connecting rods 600 can be connected as a compensation structure through the rod connecting piece provided in Embodiment 2.

[0054] In fact, the connecting piece between the rods is only the recombination of the existing components in the transition device in the first embodiment. Specifically, the connecting piece between rods is composed of a bolt 701, a nut 702 and two moving chucks 300, the two moving chucks 300 are engaged, the connecting rod 600 is arranged in the rod groove 303 of the moving chuck 300, and the bolts 701 are in turn Pass through the two cen...

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Abstract

The invention belongs to the technical field of skeletal external fixators, and relates to a frame-type external fixator. The frame-type external fixator comprises a holding base for holding a fixed needle and a connecting rod for relatively fixing the holding base. The frame-type external fixator further comprises a stationary clamping disc, a moveable clamping disc with a fastening part, and a switching device formed by a spline shaft fixedly arranged on the stationary clamping disc, wherein the stationary clamping disc is meshed with the moveable clamping disc through teeth distributed radially and uniformly on the end surfaces of the stationary and moveable clamping discs, and the stationary and moveable clamping discs are compressed and fixed by a locking mechanism. The fastening part is fixedly provided with the connecting rod in a sliding manner. In addition, the holding base is provided with at least one spline shaft hole matched with the spline shaft in shape and the spline shaft is inserted into the at least one spline shaft hole. The frame-type external fixator provided by the invention has the advantages that the angle adjusting function is achieved, the stability of the frame-type external fixator is far greater than that of a current external fixing frame with a universal joint, and the demand for threading a needle in multiple directions is taken into consideration. The members of the frame-type external fixator are highly universal and can be assembled in various structures according to treatment parts and requirements.

Description

technical field [0001] The invention belongs to the technical field of bone external fixators, and relates to a frame-type external fixator, in particular to a frame-type external fixator for calcaneal fractures. Background technique [0002] In the prior art, the external bone fixator can be used for the treatment of common fractures in clinic, and can also be used to correct some bone deformities, and is an important device in orthopedics. Any external fixator includes three basic components: pins, clamps and connectors. When used for fracture treatment, the operation method is usually after the fracture is reduced. Select the needle threading position and angle to insert the fixing pin, and then install the holding seat, connecting rod, etc. When selecting the needle threading position and angle, the following requirements should be met first: the fixing pin should be as perpendicular to the backbone as possible; Cross the muscle, or choose to puncture the muscle space; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/60
Inventor 薛锋徐向阳肖海军刘梅沈玉春丁爱忠丁亮
Owner FENGXIAN CENT HOSPITAL
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