Atomization administration and intermittent vacuum sealing drainage (VSD) device for wound surfaces

Abstract

The invention relates to a medical appliance for treating wound surfaces, in particular to an atomization administration and intermittent vacuum sealing drainage (VSD) device for wound surfaces, which comprises a coating material, a drainage tube and a negative pressure source, wherein one end of the drainage tube, which is provided with a side hole, is inserted into the coating material, and the other end of the drainage tube is connected with the negative pressure source. The device provided by the invention is characterized by also comprising an ultrasonic atomizer and an atomized gas introducing tube, wherein one end of the atomized gas introducing tube is connected with the ultrasonic atomizer, and the other end of the atomized gas introducing tube, which is provided with a side hole, is inserted into the coating material. The VSD technology is used by the device for forming a relatively sealed space on a wound surface, and ultrasonic atomized gas is injected between every two times of VSD, so that the wound surface is in a wet, low-oxygen and weakly acidic environment, thereby being favorable for repairing the tissues of the wound surface.

Description

technical field [0001] The invention relates to a medical device for wound treatment, in particular to a wound atomization drug delivery and intermittent negative pressure sealing and drainage device. Background technique [0002] Wounds (burns) have endangered human health since ancient times. How to repair wounds, accelerate wound healing, prevent infection, reduce systemic and local complications, promote functional recovery, reduce disability rates, and alleviate patient pain are clinical problems that need to be solved urgently. Traditional dressings such as gauze can no longer meet clinical needs. In view of this situation, various countries and large pharmaceutical companies have invested a lot of manpower and financial resources in researching new wound treatment methods and materials, among which new dressings and continuous negative pressure sealing drainage (vaccumsealing) Drainage (VSD) techniques are two of the most representative and clinically valuable materia...

AI Technical Summary

Problems solved by technology

But these main problems also exist in novel dressing: 1) need to change dressing frequently, increased the misery of patient and the workload of medical worker; It is difficult to truly achieve individualized drug administration; 3) In the use of new dressings, it is difficult to quickly and timely remove wound secretions and wastes, resulting in local retention of wound secretions and wastes, which inhibits wound repair to a certain extent. and increased chances of infection

Although VSD technology has achieved great success in the treatment of various soft tissue defects and infections, it also has its own limitations.

First of all, VSD technology is only a simple wound drainage technology, and its ability to promote the growth of wound granulation tissue and accelerate wound healing is limited; secondly, when VSD technology is used, the negative pressure makes the foam material and the wound tightly adhere to each other, inhibiting wound healing. The epidermal cells at the edge of the wound crawl towards the wound; third, the continuous negative pressure suction of the wound by VSD will increase the exudate of the wound, and the exudate contains a large amount of protein, so the body is prone to negative nitrogen balance; fourth, negative pressure sealing Drainage keeps the wound in a dry state all the time, which is not conducive to wound healing

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