Blood drawing apparatus
First Claim
Patent Images
1. A fluid collection system comprising:
- a double-ended cannula structure open at both ends and having a bore for passage of fluid therethrough;
a holder having means therein for releasably mounting the cannula structure with one end extending forwardly of said holder for venipuncture and the other end extending rearwardly for coupling with a collection container, said mounting means comprising;
housing means at one end of said holder for receiving a portion of said structure therein with said one cannula end extending forwardly of said housing means in said venipuncture position and said other end extending rearwardly for said coupling with said collection container;
bias means for urging said structure from said housing means after said reception of said structure in said housing means; and
user-operable locking means having an operable element exterior of said housing means, said locking means releasably engaging said cannula structure to said housing means after said reception of said structure in said housing means, said engagement overcoming the effect of said bias means in a manner to maintain said respective ends of said cannula structure in said extensions beyond said housing means during use, said user operating said element for disengaging said locking means from said structure, whereupon said bias means urge said cannula structure from said housing means and said holder.
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Abstract
A blood sample device for drawing blood from the patient. The device includes a locking mechanism which holds a biased needle assembly in the needle holder during use. Upon release of the locking mechanism, the bias on the needle assembly ejects the same from the holder. Various embodiments of locking mechanism, utilized with and without various bias means, are utilized.
89 Citations
40 Claims
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1. A fluid collection system comprising:
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a double-ended cannula structure open at both ends and having a bore for passage of fluid therethrough; a holder having means therein for releasably mounting the cannula structure with one end extending forwardly of said holder for venipuncture and the other end extending rearwardly for coupling with a collection container, said mounting means comprising; housing means at one end of said holder for receiving a portion of said structure therein with said one cannula end extending forwardly of said housing means in said venipuncture position and said other end extending rearwardly for said coupling with said collection container; bias means for urging said structure from said housing means after said reception of said structure in said housing means; and user-operable locking means having an operable element exterior of said housing means, said locking means releasably engaging said cannula structure to said housing means after said reception of said structure in said housing means, said engagement overcoming the effect of said bias means in a manner to maintain said respective ends of said cannula structure in said extensions beyond said housing means during use, said user operating said element for disengaging said locking means from said structure, whereupon said bias means urge said cannula structure from said housing means and said holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A fluid collection system comprising:
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a double-ended cannula structure open at both ends and having a bore for passage of fluid therethrough; a fluid container holder having means therein for releasably mounting the cannula structure thereto with one cannula end extending forwardly of said holder for venipuncture and the other cannula end extending rearwardly for coupling with said collection container, said mounting means comprising; housing means at one end of said holder for receiving a portion of said structure therein with said one cannula end extending forwardly of said housing means in said venipuncture position and said other end extending rearwardly for said coupling with said collection container; and user-operable locking means having an user-operable element exterior of said housing means, said locking means releasably engaging said cannula structure to said housing means after said reception of said structure in said housing means, said engagement maintaining said cannula structure in said housing means during use, said user operating said element for disengaging said locking means from said cannula structure after use, whereupon said cannula structure is released from said housing means after use. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. In combination with a fluid vessel the improvement comprising:
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a spout structure having an open bore for passage of fluid therethrough; means for releasably mounting the spout structure with one end of the bore extending forwardly for discharge of the fluid from the vessel and the other end extending rearwardly for discharge of the fluid within the vessel, said mounting means comprising; housing means for receiving a portion of said structure therein with said forward and rearward extensions; bias means for urging said structure from said housing means after said reception in said housing means; and user-operable locking means having a user-operable element exterior of said housing means for releasably engaging said structure after insertion of said structure in said housing means, said engagement overcoming said bias means in a manner to maintain said structure in said housing means during use, said user-operable element disengaging said locking means from said structure whereby to release said structure from said housing means after use.
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Specification