Negative pressure therapeutic apparatus

Abstract

The invention discloses a negative pressure therapeutic apparatus, which comprises a filling material and an airtight unit. The filling material is made from a hydrophilic polyurethane foaming body which is obtained by foaming hydrophilic polyurethane and a foaming component, and pores in the hydrophilic polyurethane foaming body are non-continuous sealed pores; and the hydrophilic polyurethane is stellate segmented polyurethane which is obtained by promoting a reaction between first polyether polyol and polyisocyanates, and then promoting a reaction with second polyether polyol and hyaluronic acid, wherein the first polyether polyol contains at least three terminal hydroxyl groups. The airtight unit covers the filling material, so that a wound space which is generally sealed and contains the filling material is formed. The negative pressure therapeutic apparatus disclosed by the invention, before implanted into a wound, is unnecessary to cut and trim the filling material for several times; and the negative pressure therapeutic apparatus is capable of effectively promoting wound healing and is capable of avoiding injury caused by adhesion when the therapeutic apparatus is removed and replaced.

Description

technical field [0001] The present invention relates to a negative pressure therapy device, in particular to a negative pressure therapy device comprising a filler and an airtight unit. Background technique [0002] Due to the increasing awareness of health care, the care of chronic wounds (such as bedsores and ulcers) has received much attention. Therefore, Negative Pressure Wound Therapy (NPWT) devices that can promote wound healing non-invasively and reduce the need for hospitalization have been successively adopted. development. [0003] At present, negative pressure therapy is to insert a filler in the wound that conforms to the shape of the wound, and the filler has continuous holes, and then uses a pump to apply negative pressure to the wound to drain the exudate from the wound and promote new tissue. Growth and improve local blood circulation. [0004] Most of the existing negative pressure therapy devices use hydrophobic polyurethane foam as a filler [for example,...

AI Technical Summary

Problems solved by technology

However, in order to fill irregular wounds, it is often necessary to cut and modify the shape of the filling material multiple times, causing inconvenience to the medical staff.

In addition, since the hydrophobic polyurethane foam has high adhesion to the wound, and the new tissue is easy to grow into its continuous pores, when the filling material is removed and replaced, the wound will often stick and be damaged, which makes the patient feel uncomfortable. Pain and cause the wound to re-injure

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