公开(公告)号：US20150342509A1

公开(公告)日：2015-12-03

申请号：US14289362

申请日：2014-05-28

Applicant: Google Inc.

Inventor： Eric Peeters ,  Peter H. Smith

IPC: A61B5/15

CPC classification number: A61B5/15134 ,  A61B5/150022 ,  A61B5/150099 ,  A61B5/150175 ,  A61B5/150343 ,  A61B5/15115 ,  A61B5/15125 ,  A61B5/1514

Abstract: A system for needle-free drawing of blood is disclosed. A device can include an evacuated negative-pressure barrel with a membrane sealing an aperture at a distal end, and a housing affixed to a proximal end. An accelerator barrel can be positioned within the negative-pressure barrel and fixed to the housing, with an open proximal end in a chamber in the housing, and an open distal end aligned with the aperture. The chamber can be filled with pressurized gas, and a trigger valve can hydrostatically separate the chamber from the open proximal end of the accelerator barrel. A micro-particle positioned within the accelerator barrel can be accelerated to high speed by an abrupt surge of gas by releasing the trigger valve. The micro-particle can attain enough momentum to pierce the aperture membrane and penetrate adjacent dermal tissue. A resulting micro-emergence of blood can be drawn into the negative pressure barrel.

Abstract translation: 公开了一种无针取血的系统。 装置可以包括抽空的负压筒，其具有密封远端的孔的膜和固定到近端的壳体。 加速器筒可以定位在负压筒内并且固定到壳体，壳体中的腔室中具有敞开的近端，以及与孔对准的开口远端。 腔室可以被加压气体填充，并且触发阀可以将腔室与加速器筒的开口近端进行静态分离。 通过释放触发阀，位于加速器筒内的微粒可以通过突然的气体浪涌而加速到高速度。 微粒可以获得足够的动量来刺穿孔膜并穿透相邻的真皮组织。 血液的微量出血可以被吸入负压桶。