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Device and method for producing therapeutic foam

A therapeutic and foam technology, applied in chemical instruments and methods, mixing methods, medical packaging, etc., can solve problems such as difficult to form circulating flow, non-circulating liquid and gas

Inactive Publication Date: 2015-05-27
BRITISH TECH GRP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid and gas are not circulated and it would be difficult, if not impossible, to create a circulating flow in the device

Method used

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  • Device and method for producing therapeutic foam
  • Device and method for producing therapeutic foam
  • Device and method for producing therapeutic foam

Examples

Experimental program
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no. 1 example

[0089] Regarding the first embodiment, the cassette is packaged in a sterile metallized plastic laminate. In the case of the second embodiment, the package also includes a syringe plunger shaft 116 . The plunger shaft 116 is fitted on the plunger element in the container 120 by means of a snap lock formation 118 arranged to engage a complementary formation 119 .

[0090] The second embodiment is significantly more difficult to use than the first embodiment. However, a more complex arrangement means that the sterilization of the polidocanol container and the rest of the cassette can be performed separately, which may be advantageous.

[0091] In use, circuit chamber 106 is filled with polidocanol solution from container 120 prior to insertion of the cassette into the pumping machine. An operator assembles plunger shaft 116 to plunger element 117 using cooperating snap lock formations 118 and 119 . As the operator applies pressure to the plunger, the cartridge moves forward t...

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Abstract

A foam generating device for generating therapeutic foam is provided comprising: a) a sealed chamber of variable volume and having a wall, the chamber containing foamable liquid and gas and having a predetermined initial volume and b) a foam generating structure located within the chamber; whereby a therapeutic foam may be generated by circulating the gas and liquid through the foam generating structure within the chamber; characterised in that at least one part of the wall of the chamber is of flexible or compressible material, such that on extraction of therapeutic foam from the chamber, the chamber is capable of reversibly reducing its volume by 20% or more from the said predetermined initial volume, without substantial change in pressure, whilst still permitting circulation of gas and liquid to maintain the remaining foam in the chamber.

Description

[0001] This application is a PCT patent application submitted on December 21, 2007 that has entered the Chinese national phase (Chinese national application number is 200780051591.3, international application number is PCT / GB2007 / 004943, the title of the invention is "A device for generating therapeutic foam and method") divisional application. technical field [0002] The present invention relates to the generation of foams such as therapeutic foams, for example foams comprising sclerosing materials - in particular sclerosing solutions - suitable for use in the treatment of various medical conditions involving blood vessels - especially varicose veins and other disorders involving venous malformations use. Background technique [0003] The sclerosing of varicose veins is based on the injection into the vessels of liquid sclerosing substances which, inter alia, facilitate the elimination of these abnormal vessels by causing a local inflammatory reaction. Until recently, scl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C44/34B01F3/04B01F5/10B01F23/00
CPCA61K9/122B29C44/3442B01F23/235B01F25/51A61J1/00A61J1/20B29B7/7404B29B7/7409B29B7/74B01F23/20
Inventor D. D. I. 赖特A. D. 哈曼G. 霍奇斯D. J. 塔格尔M. S. 尤曼J. F. 唐南
Owner BRITISH TECH GRP LTD