公开(公告)号：USRE43824E1

公开(公告)日：2012-11-20

申请号：US13077571

申请日：2002-01-11

申请人： Colin D. Sheldrake ,  George Costigan ,  Brian J. Bellhouse

发明人： Colin D. Sheldrake ,  George Costigan ,  Brian J. Bellhouse

IPC分类号： A61M5/30

CPC分类号： A61M5/3015 ,  A61M5/2053 ,  A61M5/3007 ,  A61M2005/005

摘要： A method of distributing particles in a flow of gas and a needleless syringe for use in the needleless injection of particles into the skin or mucosa of a vertebrate subject are disclosed. The syringe includes a convergence which reduces pressure of the gas flowing in the gas flow path due to the Venturi effect such that particles initially located outside of the gas flow path are drawn into the gas flow path under the action of the reduced pressure and become entrained in the gas. An exit nozzle accelerates the particles so entrained. In another aspect of the invention, there is provided a method of creating a gas flow in a needleless syringe which comprises flowing gas through a first convergence into a chamber to form a transsonic gas jet in the chamber and passing the gas jet from the chamber into a second convergence and along the nozzle.

摘要翻译： 公开了一种在气体流和无针注射器中分配颗粒的方法，用于无脊椎动物注射到脊椎动物对象的皮肤或粘膜中。 注射器包括会聚，其减少由于文丘里效应而在气体流动路径中流动的气体的压力，使得最初位于气体流动路径外部的颗粒在减压作用下被吸入气体流动路径并被夹带 在气中。 出口喷嘴加速如此夹带的颗粒。 在本发明的另一方面，提供了一种在无针注射器中产生气流的方法，该方法包括将气体通过第一会聚流入腔室中，以在腔室中形成经络气体射流，并将气体射流从腔室送入 沿着喷嘴的第二个会聚。