Negative pressure therapeutic apparatus

A negative pressure therapy, hydrophilic polyurethane technology, applied in medical science, wound drainage, surgery, etc., can solve the problems of wound injury, inconvenient operation of medical staff, damage, etc., to avoid injury and promote wound healing.

Inactive Publication Date: 2017-01-11
TAICEND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Embodiment Construction

[0022] Before the present invention is described in detail, it should be noted that in the following description, similar elements are designated by the same reference numerals.

[0023] The present invention will be further described with respect to the following examples, but it should be understood that the examples are only used for illustration and should not be construed as a limitation of the implementation of the present invention.

[0024] Hydrophilic polyurethane foam PU E

[0025] Mix 0.5mol PPG6000 triol (weight-average molecular weight of 6,000) with 2.5mol of HDI, react at 80°C for 1 hour to obtain a star-shaped prepolymer, then add 0.85mol of PEG1000 (weight-average molecular weight of 1,000), 0.85mol of PEG2000 (weight-average molecular weight of 1,000) The average molecular weight is 2,000) and 0.1 mol of hyaluronic acid (weight average molecular weight is 1,000,000), and a crosslinking reaction is carried out at 80° C. for 6 hours to obtain a star-shaped hy...

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M27/00A61L31/06A61L31/04
Inventor 萧胜贤
Owner TAICEND TECH
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