Multi-conductor lead assembly for temporary use

• US 4,744,371 A
• Filed: 04/27/1987
• Issued: 05/17/1988
• Est. Priority Date: 04/27/1987
• Status: Expired due to Term

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Cordis Leads Incorporated
• Inventors: Harris, Donald L.
• Primary Examiner(s): Desmond, Eugene F.
• Assistant Examiner(s): BRADLEY, PAULA A
• Application Number:
  US07/042,834
• Time in Patent Office: 386 Days
• Field of Search: 439/668, 439/669, 128/786, 128/781, 128/642, 128/419 C, 128/419 P, 128/784, 128/785
• US Class Current: 607/117
• CPC Class Codes: H01R 2107/00 Four or more poles
• CPC Class Codes: H01R 24/58 Contacts spaced along longitudinal axis of engagement

Abstract

The multi-conductor lead assembly comprises a first lead, a second lead and a connector assembly for connecting the leads together. The first lead includes a lead body having a distal end portion with a plurality of electrodes thereon, a proximal end portion with a plurality of sleeve electrodes thereon and a plurality of insulated wire conductors within the lead body and electrically connecting the electrodes on the distal end portion with the sleeve electrodes on the proximal end portion. The second lead includes a lead body with a proximal end, a proximal end portion, a distal end and a distal end portion, and a plurality of insulated wire conductors therein. Each of the one wire conductors has a proximal end and a proximal end portion extending out of the proximal end of the lead body. A sleeve connector is mounted on each wire conductor proximal end portion, and a needle is connected to the proximal ends of the wire conductors. The connector assembly includes a body, the distal end portion of the second lead being received in the body, a plurality of connector clips in the body adapted to receive and to make electrical contact with respective ones of the plurality of sleeve electrodes on the first lead, leafs or blades for electrically connecting each of the wire conductors in the second lead with one of the connector clips, and a closure sleeve for insulating the connection between the connector clips and the sleeve electrodes.

Claims

1. A multi-conductor lead assembly comprising:

a first lead including a lead body having a distal end portion with a plurality of electrodes thereon, a proximal end portion with a plurality of sleeve electrodes and a plurality of insulated wire conductors within the lead body and electrically connecting said electrodes on said distal end portion with said sleeve electrodes on said proximal end portion;

a second lead including a lead body having a proximal end, a proximal end portion, a distal end and a distal end portion, and a plurality of insulated wire conductors therein, each of said wire conductors having a proximal end and a proximal end portion extending out of the proximal end of said lead body, a sleeve connector mounted on each wire conductor proximal end portion;

a needle connected to said proximal ends of said wire conductors; and

a connector assembly including a body, said distal end portion of said second lead being received in said body, a plurality of connector clips in said body adapted to receive and to make electrical contact with respective ones of said plurality of sleeve electrodes on said first lead, means for electrically connecting each of said wire conductors in said second lead with one of said connector clips, and means for insulating the connection between said connector clips and said sleeve electrodes.

2. The lead assembly of claim 1 wherein said body of said connector assembly includes a first rigid leg and a second movable leg, said proximal end portion of said first lead being received between said legs.

3. The assembly of claim 2 wherein said connector clips are mounted in said second leg.

4. The assembly of claim 2 wherein said second leg is made of a flexible material, said body including an annular housing and one end of each of said legs is received in said annular housing with said second leg being made of flexible material and being bendable adjacent said annular housing.

5. The lead assembly of claim 4 wherein said distal end portion of said second lead extends into one end of said annular housing, said plurality of insulated wire conductors in said distal end portion extending into a proximal end of said second leg received inside said annular housing and into said second leg extending from said housing, each conductor extending to and making electrical contact with one of said connector clips.

6. The lead assembly of claim 4 wherein said annular housing is generally tubular and said second leg has an inner end which includes a finger portion which is received inside said tubular housing and said first leg has a proximal end portion which is received in said tubular housing and which is at least partially annular and has said finger portion of said second leg received therein.

7. The assembly of claim 2 wherein said second leg has generally U-shaped saddle formations thereon equal in number to said plurality of wire conductors and to said plurality of clip connectors, and one of said connector clips is mounted within each one of said generally U-shaped saddle formations.

8. The assembly of claim 1 wherein said first rigid leg has a plurality of generally U-shaped saddle formations, one less than the U-shaped saddle formations in said second leg, said U-shaped saddle formations on said first rigid leg being adapted to receive segments of said proximal end portion of said second lead located in the areas between said sleeve electrodes on said proximal end portion of said first lead and between said U-shaped connector clips mounted in U-shaped saddle formations of said second leg.

9. The lead assembly of claim 2 wherein said first leg has a U-shaped formation adjacent the distal end thereof, said U-shaped formation being defined by a bight portion and first and second leg portions, said first and second leg portions having means thereon for engaging said proximal end portion of said first lead for preventing longitudinal movement of said first lead relative to said second leg.

10. The lead assembly of claim 9 wherein said means for engaging the proximal end of said first lead comprises teeth on the inner surface of each of said leg portions.

11. The lead assembly of claim 4 wherein said insulating means of said connector assembly includes a tubular closure member which is initially received on said first lead and after said proximal end portion of said first lead is received between said first and second legs, said tubular closure member is moved over said legs with said proximal end portion of said first lead clamped therebetween and over said annular housing.

12. The lead assembly of claim 11 wherein said insulating means includes tie means tied around each end of said tubular closure member when it is positioned about said body comprising said housing and said first and second legs with said proximal end portion of said first lead positioned between the legs.

13. The lead assembly of claim 12 wherein said tubular closure member has an exterior annular rib at each end to prevent said tie means from coming off of said tubular closure member.

14. The lead assembly of claim 12 wherein said tubular closure member has an internal annular rib adjacent each end thereof for establishing seals with, respectively, said housing and said lead body of said first lead.