System and method of delivering local anesthesia

a technology of local anesthesia and delivery system, which is applied in the field of systems and methods of delivering local anesthesia to tissue, can solve the problems of time-consuming process
US20050043709A1Inactive Publication Date: 2005-02-24BECTON DICKINSON & CO
84 Cites 51 Cited by

Patent Information

Authority / Receiving Office
US ¡ United States
Patent Type
Applications(United States)
Current Assignee / Owner
BECTON DICKINSON & CO
Publication Date
2005-02-24
Estimated Expiration
Not applicable ¡ inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A catheter and introducer needle assembly is provided including a catheter adapter at its proximal end. The catheter adapter includes a side port in fluid communication with the catheter. A septum is located in the proximal end of the catheter adapter proximal of the side port. The introducer needle is connected at its proximal end to a needle hub and includes at least one notch formed therein in communication with the introducer needle lumen. The notch is formed in the needle such that blood can flow into the open distal end of the needle, through the lumen in the needle and through the notch into the catheter lumen (specifically, the annular space between the outside of the introducer needle and the inside of the catheter and catheter adapter). Thereafter, the blood can flow through the annular space and then through the side port and extension tube that extends from the catheter adapter. Similarly, liquids delivered to the side port flow to the annular space between the needle and the catheter, through the notch into the lumen within the needle, and out of the tip of the needle. Liquid anesthesia thus can be delivered to the patient's tissue surrounding the needle tip be delivering the liquid through the side port. An electrical connection may be provided to the needle via the needle hub to. carry an electrical charge to the patient's tissue. After withdrawing the needle from the catheter, the catheter remains in place, with the tip of the catheter disposed in the tissue being anesthetized. The clinician may provide additional anesthesia via the catheter through the extension tube set.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] The present application claims benefit under 35 U.S.C. § 119(e) from U.S. Provisional Patent Application No. 60 / 417,728, filed on Oct. 10, 2002, the entire content of which is incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] This invention relates to systems and methods of delivering anesthesia to tissue. Specifically, the invention relates to systems and methods of providing anesthesia to tissue using a catheter and introducer needle assembly, and applying a current to the needle assembly to create stimulation in the tissue to identify a target needle depth at which to deliver the anesthesia.

[0004] 2. Description of the Related Art

[0005] In certain instances, it is desirable to provide anesthesia at a point in a patient's tissue proximate to a nerve. Such procedures are known as peripheral block procedures. Typically, the clinician employs a hollow needle that is coated with an electrical insulator, leaving only the tip o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More