Soft tissue expander with displacement preventing and directional expansion functions

Abstract

The invention discloses a soft tissue expander with displacement preventing and directional expansion functions, comprising a balloon, a guide tube and an injection valve. The balloon is communicated with the injection valve through the guide tube. The soft tissue expander also comprises a thickener patch arranged at the bottom of the balloon, and the thickener patch is connected with the balloon. The soft tissue expander also comprises four corners that are connected to four corners of the thickener patch; each corner is provided with a reserved pore; the corners extend out of the bottom of the balloon for being fixedly sewn to skin of a patient; the bottom face of the thickener patch is an abrasive corase face. The expander provided by the invention allows effective fixation and directional expansion, improving effective expansion and solving the expander displacement and bidirectional expansion problems.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a soft tissue expander which prevents displacement and has the function of directional expansion. Background technique [0002] The soft tissue dilator consists of a dilation bag, a catheter, and an injection valve, and is widely used in the repair of tissue defects in many fields such as burns and plastic surgery. The principle is to embed it in the tissue and expand it by intermittent water injection to obtain excess skin and other tissues. After the expansion is completed, the expander is taken out and the excess skin tissue is used for repair. The dilated sac close to the skin is called the skin surface, and the side close to the base is called the basal surface. [0003] In practical application, there are two problems: one is that the dilator is displaced after implantation, and the expanded tissue deviates from the repair recipient area, resulting in poor surgical...

AI Technical Summary

Problems solved by technology

[0003] In practical application, there are two problems: one is that the dilator is displaced after implantation, and the expanded tissue deviates from the repair recipient area, resulting in poor surgical repair results; If the base is buried in soft tissues such as fat and muscle, both sides will expand simultaneously, and the base surface will be compressed and become depressed, while the skin surface will not be effectively expanded.

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