A pH-sensitive smart dressing

Abstract

A PH sensitive intelligent dressing comprises a PH sensor, a singlechip, algal sponge and a piezoelectric film; the PH sensor collects PH value information of the wounded surface and outputs a voltagesignal to the singlechip; the singlechip compares the voltage signal with the built-in voltage value and outputs the corresponding voltage value to the piezoelectric film; the piezoelectric film outputs a micro displacement or deformation through the inverse piezoelectric effect so as to drive the algae sponge to generate deformation. The alga sponge releases the corresponding medicine due to thedeformation so as to realize the intelligent control of the medicine release. Moreover, the algal sponge of the PH sensitive intelligent dressing adopts the biomass material with good biocompatibility, thereby being beneficial to avoiding stimulation, allergy and the like caused by the material that may influence wound healing. The PH sensitive intelligent dressing adopts a freeze-drying method to produce the aerogel, and the algal sponge with small aerogel density and large porosity is obtained by adjusting the proportion of each substance. The aerogel structure is more favorable for keepingthe microenvironment required by wound healing and improving the loading efficiency of algal sponge, and has the effects of ventilation and bacteria inhibition.

Description

technical field [0001] The invention relates to a pH-sensitive smart dressing. Background technique [0002] Chronic wounds are common in various clinical departments. The etiology is complex and the course of the disease is long. It has become a major problem in the new century. It not only has a significant negative impact on the quality of life of the patient himself, but also causes a medical burden on the society due to the high cost of dressing changes. It makes the wound more difficult to heal, and the difficult-to-heal wound can be infected concurrently. [0003] So far, the way we judge whether the wound is healed is to take off the dressing and observe directly. If the wound is not healed at this time, it is likely to destroy the healing of the wound and cause the wound to be infected, which not only causes pain to the patient, but also interferes with the normal operation of the wound. heal. Contents of the invention [0004] The purpose of the present inventi...

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Problems solved by technology

[0003] So far, the way we judge whether the wound is healed is to take off the dressing and observe directly. If the wound is not healed at this time, it is likely to destroy the healing of the wound and cause the wound to be infected, which not only causes pain to the patient, but also interferes with the normal operation of the wound. heal

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