Catheter placement assembly having axial and rotational alignment means
First Claim
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1. In an intravenous catheter assembly including(1) a catheter unit comprising:
- (a) a flexible plastic catheter having a distally tapered distal end,(b) a winged catheter insertion means having a lumen therethrough, the proximal end of said catheter in communication with said lumen of said catheter insertion means via its distal end,(c) a flexible tubing having its distal end in communication with said lumen of said catheter insertion means via its proximal end,(d) a tube hub having a lumen therethrough, the proximal end of said flexible tubing in communication with said lumen of said tube hub via its distal end, and(2) a needle inserted through said catheter, winged catheter insertion means, flexible tubing and tube hub, said needle having a sharpened distal end extending beyond said distal end of said catheter and a proximal end attached to a needle hub;
the improvement which comprises;
complementary means associated with said lumen of said winged catheter insertion means and said needle mechanically interlocked to provide axial and rotational alignment of said needle relative to said catheter unit at all times.
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Abstract
A needle-inside, catheter placement assembly including a needle and a catheter unit comprising a catheter, winged catheter insertion means, flexible tubing and tube hub, wherein axial and rotational alignment of the needle and catheter unit are maintained by mechanically interlocked complementary means associated with the needle and lumen of the winged catheter insertion means. Means for removably connecting the proximal ends of the catheter unit and needle to stretch the flexible tubing tautly are also provided.
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Citations
14 Claims
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1. In an intravenous catheter assembly including
(1) a catheter unit comprising: -
(a) a flexible plastic catheter having a distally tapered distal end, (b) a winged catheter insertion means having a lumen therethrough, the proximal end of said catheter in communication with said lumen of said catheter insertion means via its distal end, (c) a flexible tubing having its distal end in communication with said lumen of said catheter insertion means via its proximal end, (d) a tube hub having a lumen therethrough, the proximal end of said flexible tubing in communication with said lumen of said tube hub via its distal end, and (2) a needle inserted through said catheter, winged catheter insertion means, flexible tubing and tube hub, said needle having a sharpened distal end extending beyond said distal end of said catheter and a proximal end attached to a needle hub;
the improvement which comprises;complementary means associated with said lumen of said winged catheter insertion means and said needle mechanically interlocked to provide axial and rotational alignment of said needle relative to said catheter unit at all times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification