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Catheter for neural blockades

a neural blockage and catheter technology, applied in the field of catheters, to avoid the risk of nerve blockag

Inactive Publication Date: 2006-08-17
PAJUNK HEINRICH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Ensures reliable electrical contact and minimizes nerve injury risk while allowing for continuous position verification and anesthetic delivery without obstructing the catheter lumen.

Problems solved by technology

The thin wire passing through the catheter in order to connect the distal contact tip with the proximal connector of the stimulator does not prevent a liquid such as an anesthetic from being introduced.

Method used

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  • Catheter for neural blockades
  • Catheter for neural blockades
  • Catheter for neural blockades

Examples

Experimental program
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Embodiment Construction

[0017]FIG. 1 is a cross section view of a catheter 10. The catheter 10 is a flexible tube, made for example of plastic or polyamide. The length of the catheter 10 depends on its application. For peripheral plexus anesthesia, the length of the catheter 10 is approximately 400 mm, while for peridural and spinal anesthesia a length of for example 900 mm may be used. The diameter of the catheter 10 also depends on the application. For example, a 19G catheter has an external diameter of 1 mm and an internal diameter of 0.5 mm. A 20G catheter has an external diameter of 0.8 mm and an internal diameter of 0.4 mm. It is possible to use a still thinner catheter with correspondingly smaller diameters.

[0018] The catheter 10 includes a contact tip that is placed in the distal end of the catheter 10, and is formed as a metal part. The contact tip includes a plug 12 and a cap 14, in one piece. The plug 12 has the shape of a circular cylinder whose external diameter corresponds to the internal di...

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PUM

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Abstract

A catheter for neural blockades in anesthesia includes a flexible plastic tube in which a wire is arranged for electro-stimulation. The distal end of the wire is conductively applied to a contact tip protruding out of the catheter. The contact tip comprises a stopper and a cap which are positioned in the catheter, the cap being arranged in front of the distal end of the catheter and covering the edge of the front surface thereof.

Description

PRIORITY INFORMATION [0001] This application is a continuation of co-pending Ser. No. 10 / 221,387 filed Feb. 20, 2003.BACKGROUND OF THE INVENTION [0002] The present invention relates to the field of catheters, and in particular to a catheter for nerve blocks in anesthesia. [0003] In anesthesia, for lengthy operations, postoperative pain therapy, and treatment of chronic pain states, the nerves supplying a specific region of the body are often blocked by an anesthetic. A catheter is used to introduce the anesthetic, and the distal end of the catheter is positioned as close as possible to the nerve to achieve an optimum effect with a minimal quantity of anesthetic. The catheter, which can remain in position for a long time if necessary, includes a long, thin, flexible plastic tube. [0004] To insert the catheter into the sheath or canal of the nerve, a cannula is used to insert the catheter. U.S. Pat. No. 5,007,902 teaches replacement of such a cannula by a puncture cannula, in which ca...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61N1/05A61M19/00
CPCA61M19/00
Inventor PAJUNK, HEINRICHPAJUNK, HORST
Owner PAJUNK HEINRICH