Surgery – Diagnostic testing – Liquid collection
Patent
1998-04-16
1999-07-27
Hindenburg, Max
Surgery
Diagnostic testing
Liquid collection
A61B 500
Patent
active
059281669
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to blood sampling apparatus generally.
BACKGROUND OF THE INVENTION
Various types of blood sampling apparatus are known in the art. The following patent documents are believed to represent the state of the art: U.S. Pat. Nos. 3,877,465; 4,763,648; 4,920,970; 4,934,015; 4,981,140; 5,002,066 & 5,084,034; European Patent Application 88906129.7 and PCT Published Patent Application WO 93/21821.
SUMMARY OF THE INVENTION
The present invention seeks to provide improved blood sampling apparatus having enhanced safety features.
There is thus provided in accordance with a preferred embodiment of the present invention blood sampling apparatus operative to selectively and removably interconnect a blood sample container with an extracorporeal blood conduit and including: said blood conduit and said blood sample container, the blood interface assembly comprising: as to have portions extending outward of said needle mount in opposite directions; and needle and onto at least a portion of said needle mount. In accordance with a preferred embodiment of the invention, the housing is configured and the needle is mounted such that inadvertent engagement of a user's finger with either point of said needle is substantially prevented.
Additionally in accordance with a preferred embodiment of the present invention, the removable mounting of the needle mount into said housing is effected by a plurality of tabs, azimuthally distributed about the interior periphery of the housing spaced from a peripheral shoulder formed therein.
Further in accordance with a preferred embodiment of the present invention, the adhesive mounting of the double-pointed needle in the needle mount is provided by application of adhesive on only one side of the needle mount and onto a roughened portion of the needle.
Preferably, the adhesive is configured so as to provide an inclined surface over which an open end of the resilient sheath is readily slid into retained engagement with an axially extending portion of said needle mount.
In accordance with a preferred embodiment of the present invention, the needle mount comprises a truncated circular disk having integrally formed therewith a pair of male needle attachment portions.
Further in accordance with another preferred embodiment of the present invention, there is provided blood sampling apparatus which further includes a puncturable sampling appliance adapted to be mounted onto the blood conduit such that the blood conduit extends uninterrupted therethrough and can be punctured thereat to draw blood therefrom.
Additionally in accordance with a preferred embodiment of the present invention, the puncturable sampling appliance is configured and the needle is mounted such that inadvertent engagement of a user's finger with a point of the needle extending towards the puncturable sampling appliance is substantially prevented.
Still further in accordance with a preferred embodiment of the present invention, the blood interface assembly is adapted to engage with the puncturable sampling appliance in first and second engagements, wherein in the first engagement, the needle is prevented from puncturing the blood conduit, and wherein in the second engagement, the needle is allowed to puncture the blood conduit.
Additionally in accordance with a preferred embodiment of the present invention, the blood interface assembly is adapted to engage with the puncturable sampling appliance in first and second engagements, substantially prevented from axial movement with respect to the puncturable sampling appliance and the needle is prevented from puncturing the blood conduit, the blood interface assembly being rotatable azimuthally with respect to the puncturable sampling appliance, and axially with respect to the puncturable sampling appliance, thereby causing the needle to puncture the blood conduit.
BRIEF DESCRIPTION OF DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description, taken in conjunction with th
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Levinhar Zvi
Rogel Eitan
Shemesh Eli
Hindenburg Max
Migada Inc.
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