Heart pacer lead wire with pull-away needle

• US 4,630,617 A
• Filed: 10/09/1980
• Issued: 12/23/1986
• Est. Priority Date: 10/09/1980
• Status: Expired due to Term

• Current Assignee: American Cynamid Company
• Original Assignee: American Colloid Company (Minerals Technologies Incorporated)
• Inventors: Kaganov, Alan L., Ritter, Thomas A., Bray, James C.
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US06/195,531
• Time in Patent Office: 2,266 Days
• Field of Search: 128/419 P, 128/784
• US Class Current: 607/119
• CPC Class Codes: A61B 17/06004 Means for attaching suture to needle tipping A61B17/06195; connecting wire to other metallic objects B21F15/00
• CPC Class Codes: A61B 17/06066 Needles, e.g. needle tip configurations making needles B21G1/00
• CPC Class Codes: A61B 2017/06028 by means of a cylindrical longitudinal blind bore machined at the suture-receiving end of the needle, e.g. opposite to needle tip
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium

Abstract

A surgical electrode consisting of an insulated stainless steel wire having surgical needles conductively affixed at one or both ends, at least one needle having a pointed end and a nonpointed end with a blind hole or flange in the nonpointed end thereof, and the blunt end of a blunt pointed pin fitted into said hole or flange and a crimp in said nonpointed end of the needle retaining said pin in said hole or flange with controlled pull-out characteristics, said pin conductively and permanently affixed at the other end to said wire, whereby said pin may be pulled out of said blind hole or flange and the blunt end of said pin used as an electrical jack for connection to a pacemaker or similar electric current generating or monitoring device. The electrodes are particularly useful as temporary heart pacer electrodes for cardiac stimulation during and after surgical operations.

Claims

1. A surgical electrode comprising:

(a) an electrically conductive wire having a first needle attached to and in electrical contact with one end of said wire;

(b) an electrically conductive connector pin permanently attached to and in electrical contact with the other end of said wire and having a blunt pointed end opposite the end attached to said wire;

(c) a second needle having a cylindrical blind hole in one end into which is inserted, with removable attachment and in electrical contact, the blunt pointed end of said pin; and

(d) a dielectric insulating coating over the exterior surface of said wire electrically insulating said wire over a major portion of the length thereof;

the removable attachment being such that the needle and pin may be readily pulled away from each other.

2. An electrode of claim 1 wherein the dielectric insulating coating over the exterior surface of the wire is continuous from the surface of said pin.

3. An electrode of claim 1 wherein said conductive wire is a multifilament stainless steel strand.

4. An electrode of claim 1 wherein said pin is attached to the second needle with crimping providing a controlled pull-out of predetermined force.

5. An electrode of claim 1 wherein said first needle is a curved needle.

6. An electrode of claim 1 wherein said second needle is a straight cutting needle.

7. A surgical electrode comprising:

(a) an electrically conductive wire having a first needle attached to and in electrical contact with one end of said wire;

(b) an electrically conductive connector pin containing a portion of the other end of said wire permanently crimped into a coaxial cylindrical blind hole in one end of said pin and having a blunt point on the other end of said pin;

(c) a second needle containing the blunt end of said pin removably crimped into a coaxial cylindrical blind hole in the nonpointed end of said needle such that said needle and pin may be readily pulled away from each other; and

(d) a dielectric insulating coating over the exterior surface of said wire electrically insulating said wire continuous from the surface of said pin.

8. A surgical electrode comprising:

(a) a multifilament stainless steel wire having a curved needle attached to and in electrical contact with one end of said wire;

(b) a stainless steel connector pin containing a portion of the other end of said wire permanently crimped into a coaxial cylindrical blind hole in one end of said pin and having a blunt point on the other end of said pin terminating in a blunt pointed teat;

(c) a straight cutting needle containing the blunt pointed teat of said pin removably crimped into a coaxial cylindrical blind hole in the nonpointed end of said needle, such that said needle and pin may be readily pulled away from each other, said pin and needle being of substantially the same diameter; and

(d) a TEFLON®

type 100 coating over the exterior surface of said wire continuous from the surface of said pin.