Surgery – Truss – Pad
Patent
1995-04-24
1996-05-21
Hindenburg, Max
Surgery
Truss
Pad
A61B 500
Patent
active
055180051
ABSTRACT:
A disposable syringe for the dual extraction of arterial blood or venous blood into the barrel of said disposable syringe and a plurality of vacuum glass tubes. The distal portion of the syringe has an inner cannula extending centrally retrograde from the distal portion of the syringe and telescoping into the proximal portion of a conduit of a plunger of the syringe with said plunger of the syringe having a piston which sealably slides lengthwise about said inner cannula and said conduit of said plunger further having one end thereof sealably accepting a blood collection needle of a blood collection receptacle with said inner cannula telescoping further centrally retrograde into said conduit of said plunger with the distal portion of said inner cannula being securely positioned into the distal portion of the syringe so as to allow arterial or venous blood to flow around said inner cannula and into the barrel of the syringe when said plunger is advanced proximally with said inner cannula inducing the flow of arterial or venous blood when a vacuum glass tube is inserted into said blood collection receptacle. Several embodiments of the inner cannula plunger-conduit system are described.
REFERENCES:
patent: 3931815 (1976-01-01), Takatsuki
patent: 4150666 (1979-04-01), Brush
patent: 4312362 (1982-01-01), Kaufman
patent: 4378812 (1983-04-01), Sarstedt
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