COMBINED ELECTRODE AND HYPODERMIC SYRINGE NEEDLE

• US 3,682,162 A
• Filed: 12/04/1969
• Issued: 08/08/1972
• Est. Priority Date: 12/13/1968
• Status: Expired due to Term

• Current Assignee: John E. Colyer
• Original Assignee: John E. Colyer
• Inventors: Colyer, John E.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US04/882,314
• Time in Patent Office: 978 Days
• Field of Search: 128/2.1R,2.1E,419P,214,2.1B,214.4,419D,404,172.2,172.1,221,2.05,2.06,302.1
• US Class Current: 600/373
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/294 for nerve conduction study [NCS]
• CPC Class Codes: A61M 5/32 Needles; Details of needles pertaining to their connection with syringe or hub infusion needles A61M5/158; Accessories for bringing the needle into, or holding the needle on, the body A61M5/42, A61M5/46 take precedence; guide needles for catheters A61M25/065; Devices for protection of needles apparatus specially adapted for cleaning or sterilising needles A61M5/001
• CPC Class Codes: A61M 5/427 Locating point where body is to be pierced, e.g. vein location means using ultrasonic waves, injection site templates
• CPC Class Codes: A61N 1/0502 Skin piercing electrodes
• CPC Class Codes: A61N 1/36017 with leads or electrodes penetrating the skin
• CPC Class Codes: A61N 1/36021 for treatment of pain

Abstract

A hypodermic needle for connection with a hypodermic syringe attachment and which comprises at least two electrode elements, an inner one of which conveys fluid as a conventional hypodermic needle and the two of which combine as a probe having a tip-end stimulation zone when connected with an electrical supply.

Claims

1. A hypodermic needle comprising two hollow tubular electrodes, one electrode being disposed within the other, means electrically insulating the outer electrode from the inner electrode, means disposed on one of the electrodes for attachment to a dispenSing means, electrically conducting means on each electrode for connection to a power supply, and each electrode having a lower tip end, the tip ends of said electrodes terminating in a common plane.

2. The hypodermic needle as claimed in claim 1 wherein said inner and outer electrodes are coaxial.

3. The hypodermic needle as claimed in claim 1 including at least one further electrode located within the insulating means between the inner and outer electrodes, and means electrically connecting the further electrode with an external apparatus.

4. The hypodermic needle as claimed in claim 3 wherein said further electrode comprises a fine wire electrode.

5. The hypodermic needle as claimed in claim 1 wherein the lower tip end of both the inner and outer electrodes terminates in a bevelled plane, with the inner and outer electrodes in said plane defining an intermediate stimulation zone.

6. The hypodermic needle as claimed in claim 1 wherein the inner and outer electrodes both terminate in upper respective hub portions, with the hub portion of the inner electrode fitting within that of the outer electrode.

7. The hypodermic needle as claimed in claim 1 including a molded sleeve of insulating material covering the needle over a portion of its length.

8. A hypodermic needle comprising two hollow tubular electrodes, one of said electrodes being disposed within the other electrode in coaxial relationship, means electrically insulating the outer electrode from the inner electrode, said inner electrode having an upper hub portion, means for attaching the upper hub portion to a dispensing means, electrical conductor means on each electrode for connection to a power supply, each electrode having a lower tip end, and the lower tip ends of said electrodes terminating in a common plane.