Manual catheter placement device
First Claim
1. An intravascular catheter placement device for operator insertion of an intravascular catheter into the interior of a blood vessel, comprising:
- (a) an intravascular catheter;
(b) a hollow needle, the catheter being concentric to and over the needle;
(c) a vacuum chamber in flow communication with the hollow needle; and
(d) means for creating a vacuum within the vacuum chamber, said means for creating vacuum being manually displaceable upon blood vessel penetration by said needle to enable a manually driven advancement of said catheter.
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Accused Products
Abstract
An improved manual catheter placement device to facilitate successful cannulation by minimizing risks of needle tip disengagement with a penetrated blood vessel and by minimizing risks of blood vessels overpenetration. The device comprises a needle, a catheter concentric with the needle, means of manually creating vacuum to accelerate backflow of blood upon occurred penetration, means for manually advancing the catheter, said means for manually advancing the catheter being actuated by said means for creating the vacuum. Actuation of said means for catheter advancement may be either achieved by release of said means for catheter advancement, said advancing means being positioned within easy reach of the operator'"'"'s hand which creates the vacuum, so that no repositioning of the vacuum creating hand nor a two hands operation is required, or may be accomplished by conversion of the manual action exerted upon said vacuum creating means into a catheter advancing action exerted upon said means for advancing the catheter. The above features are aimed at minimizing loss of needle tip engagement with blood vessel, while overpenetration is minimized by a specially configured needle catheter assembly favoring near parallel approach of the needle in respect to the blood vessel to penetrate.
64 Citations
27 Claims
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1. An intravascular catheter placement device for operator insertion of an intravascular catheter into the interior of a blood vessel, comprising:
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(a) an intravascular catheter; (b) a hollow needle, the catheter being concentric to and over the needle; (c) a vacuum chamber in flow communication with the hollow needle; and (d) means for creating a vacuum within the vacuum chamber, said means for creating vacuum being manually displaceable upon blood vessel penetration by said needle to enable a manually driven advancement of said catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising:
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(a) an intravascular catheter; (b) a hollow needle, said catheter being concentric to said hollow needle; (c) means for advancing said catheter, said means for advancing said catheter releasably engaging said catheter to retain said catheter in a retracted position in respect to said needle upon withdrawal of said needle, and to release said catheter upon advancement of said catheter to an advanced position in respect to said needle.
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26. An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising:
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(a) an intravascular catheter; (b) a hollow needle, said catheter being concentric to said hollow needle; (c) means for accelerating backflow of blood upon blood vessel penetration by said needle, said means for accelerating backflow of blood being manually displaceable to enable a manually driven advancement of said catheter upon said blood vessel penetration.
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27. An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising:
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(a) an intravascular catheter; (b) a hollow needle, said catheter being concentric to and over said hollow needle; (c) a vacuum chamber communicating with said hollow needle; (d) means for creating vacuum within said vacuum chamber, said vacuum creating means actuating manual advancement of the catheter upon blood vessel penetration by said needle.
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Specification