Self-supporting or automatic skin soft tissue dilator

Abstract

The self-supporting or automatic skin soft tissue dilator consists of dilating bag under the skin, connecting pipe and inflator connected successively. It features the connecting pipe extending from under skin to body surface and with section outside the body connected to an adjustable pressure-limiting valve via a T-union. The inflator is one elastic bag with air inlet connected to a non-return sucking valve and air outlet connected to a non-return outlet valve. The connecting pipe includes two sections connected via a sealing union. The pressure-limiting valve is also connected to a pressure gauge with red warning label beyond 60-80 mmHg area. The present invention is used to dilated under skin and has less pressure fluctuation.

Description

【Technical field】 [0001] The invention relates to a plastic surgery instrument, in particular to a skin and soft tissue plastic surgery instrument. 【Background technique】 [0002] In plastic surgery, it is often necessary to suture the surgical opening where the skin and soft tissue have been removed in a large area, or where the scalp is hard and difficult to suture. It is very troublesome to use heterodermal transplantation or even self-skin grafting. Currently, the most popular is A skin and soft tissue expander is embedded subcutaneously near the skin and soft tissue at the sutured site, and the surface area of ​​the skin and soft tissue is gradually expanded by using the skin and soft tissue expander, so that it can gradually reach the level of self-suture, thereby greatly simplifying the operation and improving the quality of life. The safety and quality of the operation; currently there are two main structures of soft tissue expanders used clinically: one is to embed ...

AI Technical Summary

Problems solved by technology

The shortcoming of existing soft tissue dilator is: one is to make the expansion bag fully expand as far as possible, obtain suturing skin area as early as possible, also must prevent the pressure of expansion bag from causing skin soft tissue necrosis at the same time, so the water injection process must be performed by medical personnel. For the operation, the patient must go to the hospital to inject water every two or three days, which brings inconvenience and even pain to the patient; secondly, the pressure fluctuation in the expansion sac is large, and the expansion treatment course is too long (about 45-60 days), which prolongs the patient's life. pain

[0003] In order to make patients safer and more convenient, and to reduce pressure fluctuations in the pores, some related improvements have also been disclosed in Chinese and foreign patents. For example, 97240319.1 in Chinese patent describes a continuous dripping skin The soft tissue dilator adopts an infusion bottle for intravenous infusion, a drip pot, a drip tube, and a drip control switch clip to form an extracorporeal liquid pressure device, and a screw is installed between the water injection valve of the expansion bag, the catheter, and the drip tube. In order to achieve a certain degree of convenience for the patient and reduce the pressure fluctuation in the expansion bag, but because the height of the infusion bottle is difficult to standardize, the tightness of the infusion control switch clip also depends on the medical staff. To adjust the observation of subcutaneous blood supply, the pressurized substance is still liquid, which is not very convenient for patients, especially Chinese patients

[0004] There are also some foreign patents that have made some efforts in this regard. For example, FR2615397 discloses a continuous movable tissue expansion sac that electronically controls the pressure of the expansion sac. The control equipment is also quite complicated, and the actual effect is still difficult to evaluate

[0005] In addition, U.S. Patent No. 4,217,889 describes the device and method for gradually increasing the skin area. The whole device is embedded under the skin, and is provided with two reverse one-way valves, which have a certain pressure regulation effect, but still require medical personnel to periodically inject the subcutaneous The reservoir is supplemented with liquid pressurized substances, so the patient cannot get substantial convenience, and the pressure fluctuations before and after the skin relaxes and expands still exist

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