Catheter positioning system

A technology for catheters and flexible catheters, applied in the field of intravascular catheter placement, catheter placement systems, and catheter placement, which can solve problems such as reducing complications

Inactive Publication Date: 2014-08-06
W.F.尤梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] Although the use of ultrasound imaging during initial placement has reduced complications and additional imaging during catheter placement will further reduce the risk of complications, there remains a need to simplify CVC placement and further reduce the associated risks

Method used

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Embodiment Construction

[0051] Referring now in detail to the drawings, wherein like numerals refer to like parts throughout, reference numeral 10 generally designates a catheter placement system constructed in accordance with and embodying the present invention. Catheter placement system 10 includes a catheter needle assembly 12 that includes a thin needle 14, such as a 27 gauge, having a sharpened cutting tip 16 at its distal end.

[0052] A thin catheter 18 , for example 22 gauge, includes a tapered distal end 20 , a permanent sleeve 22 at its proximal end, and a lumen 24 that houses the shaft of needle 14 . The diameter of the lumen 24 is greater than the diameter of the needle shaft, forming a clearance space 26 whereby the needle 14 can move axially relative to the catheter 18 with relative freedom if not constrained.

[0053] In accordance with the present invention, one or more releasable clips 28 are provided through which catheter needle assembly 12 extends. figure 1 Shown is an exemplary ...

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Abstract

A catheter positioning system includes a catheter needle assembly comprising a catheter having a permanent hub and a needle carried in the catheter lumen. A releasable clamp is used to compress the catheter against the needle to prevent axial movement of one relative to the other. The clamp is periodically released after being moved a short distance toward the target vessel or nerve and is repositioned a short distance from the skin entry point to further advance the catheter needle assembly. The clamp is configured to be removed from the catheter by movement in a direction other than along the longitudinal axis of the catheter while the catheter hub remains in place. After successful placement of the catheter, the clamp may be snapped apart or opened along a hinge without moving the catheter from its final position.

Description

[0001] related application [0002] This application claims the benefit of US Provisional Application No. 61 / 547,432, filed October 14, 2011, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to intravascular catheters and the placement of catheters for the administration of regional anesthesia. More particularly, it relates to intravascular catheter placement, a system for placing catheters that may be used for procedures such as central venous pressure monitoring or infusion of fluids or medications. In the case of regional anesthesia, the present invention relates to a system for the placement of catheters and neurostimulators or for use in various procedures such as administration of anesthesia blocks [0004] Other needles, and for continuous infusion of anesthetic through the catheter. Background technique [0005] The field of regional anesthesia involves the administration of anesthetics to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/06A61M25/01A61M25/18
CPCA61N1/36021A61N1/0551A61M25/0113A61M25/0606A61M25/013A61N1/36017A61M25/0105
Inventor W.F.尤梅
Owner W.F.尤梅
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