Cardiac pacemaker lead with pacemaker connector

• US 6,167,314 A
• Filed: 04/14/1998
• Issued: 12/26/2000
• Est. Priority Date: 04/14/1998
• Status: Expired due to Term

• Current Assignee: Intermedics Incorporated (Boston Scientific Corporation)
• Original Assignee: Intermedics Incorporated (Boston Scientific Corporation)
• Inventors: Gerstmann, Hans, Fischer, Elmar R. Sr.
• Primary Examiner(s): EVANISKO, GEORGE ROBERT
• Application Number:
  US09/059,975
• Time in Patent Office: 987 Days
• Field of Search: 607/115, 607/116, 607/119, 607/122, 600/372, 600/373, 600/374, 600/377, 439/909, 439/668
• US Class Current: 607/119
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections

Abstract

A cardiac stimulator lead connector is provided. The connector includes a pin member that has a distal end and a first insulating sleeve coupled to the pin member. An annular member is coupled to the first insulating sleeve. A conductor sleeve is coupled to the annular member and a second insulating sleeve is coupled to the conductor sleeve. One or more conductor wires running from distal electrodes in a lead may be welded to the connector. The connector eliminates crimping as a mechanism to secure lead conductors to lead connectors.

Claims

1. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

a first insulating sleeve coupled to the pin member;

an annular member coupled to the first insulating sleeve;

a conductor sleeve coupled to the annular member;

a second insulating sleeve coupled to the conductor sleeve; and

a preformed insulative annular member between the first insulating sleeve and the pin member, wherein the preformed insulative annular member, the first insulating sleeve, and the pin member are in a fixed relation to one another.

2. The connector of claim 1, wherein the first insulating sleeve is coupled to the pin member by a first molding process and the second insulating sleeve is coupled to the conductor sleeve by a second molding process.

3. The connector of claim 1, wherein the first insulating sleeve has a first pair of external O-rings and the second insulating sleeve has a second pair of external O-rings.

4. The connector of claim 3, wherein the first pair of external O-rings being integrally molded with the first insulating sleeve and the second pair of external O-rings being integrally molded with the second insulating sleeve.

5. The connector of claim 1, wherein the conductor sleeve is welded to the annular member.

6. The connector of claim 1, wherein the annular member has a longitudinally projecting flag for coupling to a conductor wire of the lead.

7. The connector of claim 1, wherein the distal end of the pin member comprises an elongated tubular member.

8. The connector of claim 1, wherein the preformed insulative annular member is disposed between the distal end and the annular member and is coupled to the distal end.

9. The connector of claim 1, wherein the conductor sleeve has a longitudinal bore for longitudinally receiving the annular member and wherein the conductor sleeve abuts the first insulating sleeve.

10. The connector of claim 9, further comprising a first pair of external O-rings being integrally molded with the first insulating sleeve and a second pair of external O-rings being integrally molded with the second insulating sleeve.

11. The connector of claim 9, wherein the conductor sleeve is welded to the annular member.

12. The connector of claim 9, wherein the annular member has a longitudinally projecting flag for coupling to a conductor wire of the lead.

13. The connector of claim 9, wherein the insulative annular member is disposed between the distal end and the annular member and is coupled to the distal end.

14. A cardiac stimulator lead, comprising:

a flexible tubular sleeve having a first end and a second end;

a tip electrode coupled to the first end;

a connector coupled to the second end, the connector having a pin member having a distal end, a first insulating sleeve coupled to the pin member, an annular member coupled to the first insulating sleeve, and a conductor sleeve coupled to the annular member; and

a preformed insulative annular member between the first insulating sleeve and the pin member, wherein the preformed insulative annular member, the first insulating sleeve, and the pin member are in a fixed relation to one another;

a second insulating sleeve coupled to the conductor sleeve; and

a first conductor wire coupled between the connector and the tip electrode.

15. The cardiac stimulator lead of claim 14, wherein the first conductor wire is welded to the pin member.

16. The cardiac stimulator lead of claim 15, further comprising a second electrode coupled to the tubular sleeve and a second conductor wire coupled between the second electrode and the annular member.

17. The cardiac stimulator lead of claim 16, wherein the annular member has a longitudinally projecting flag and the second conductor wire is welded to the flag.

18. The cardiac stimulator lead of claim 14, wherein the first insulating sleeve is coupled to the pin member by a first molding process and the second insulating sleeve is coupled to the conductor sleeve by a second molding process.

19. The cardiac stimulator lead of claim 14, wherein the first insulating sleeve has a first pair of external O-rings and the second insulating sleeve has a second pair of external O-rings.

20. The cardiac stimulator lead of claim 19, wherein the first pair of external O-rings being integrally molded with the first insulating sleeve and the second pair of external O-rings being integrally molded with the second insulating sleeve.

21. The cardiac stimulator lead of claim 14, wherein the conductor sleeve is welded to the annular member.

22. The cardiac stimulator lead connector of claim 14, wherein the preformed insulative annular member is disposed between the distal end and the annular member and is coupled to the distal end.

23. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

a first insulating sleeve coupled to the pin member;

an annular member coupled to the first insulating sleeve, the annular member including a longitudinally projecting flag for coupling to a conductor wire of the lead;

a conductor sleeve coupled to the annular member; and

a second insulating sleeve coupled to the conductor sleeve.

24. A connector for a cardiac stimulator lead, comprising:

a pin member having a tubular distal end;

a first insulating sleeve molded around the pin member, the first insulating sleeve having a first pair of external O-rings, the first pair of external O-rings being integrally molded with the first insulating sleeve;

an annular member coupled to the first insulating sleeve, the annular member having a longitudinally projecting flag for coupling to a conductor wire of the lead;

a conductor sleeve coupled to the annular member, the conductor sleeve having a longitudinal bore for longitudinally receiving the annular member whereby the conductor sleeve abuts the first insulating sleeve; and

a second insulating sleeve coupled to the conductor sleeve, the second insulating sleeve having a second pair of external O-rings, the second pair of external O-rings being integrally molded with the second insulating sleeve.

25. A cardiac stimulator lead, comprising:

a flexible tubular sleeve having a first end and a second end;

a tip electrode coupled to the first end;

a second electrode coupled to the tubular sleeve;

a connector coupled to the second end, the connector having;

a pin member having a distal end;

a first insulating sleeve coupled to the pin member;

an annular member coupled to the first insulating sleeve, the annular member having a longitudinally projecting flag; and

a conductor sleeve coupled to the annular member;

a second insulating sleeve coupled to the conductor sleeve;

a first conductor wire coupled between the connector and the tip electrode, wherein the first conductor wire is welded to the pin member; and

a second conductor wire coupled between the annular member and the second electrode, wherein the second conductor wire is welded to the longitudinally projecting flag of the annular member.

26. A connector adapted for mating to conducting structure inside a cardiac stimulator, comprising:

a connector pin assembly including;

a pin member having a distal end;

a first insulating sleeve coupled to the pin member; and

an annular member coupled to the first insulating sleeve;

a connector sleeve assembly including;

a conductor sleeve adapted for providing an electrical pathway between the annular member and the conducting structure inside the cardiac stimulator, the conductor sleeve having at least one bore; and

a second insulating sleeve coupled to the conductor sleeve, the second insulating sleeve having a portion molded through the at least one bore wherein the portion of the mold forms a button for securing the second insulating sleeve to the conductor sleeve.

27. The connector of claim 26 further comprising:

the first insulating sleeve having a first pair of integrally molded external O-rings;

the second insulating sleeve having a second pair of integrally molded external O-rings.

28. The connector of claim 26, further comprising:

a flexible tubular sleeve having a first end and a second end;

a tip electrode coupled to the first end;

an annular electrode coupled to proximal the first end;

wherein one or more buttons of the second insulating sleeve secure the conductor sleeve to the second insulating sleeve;

a first conductor wire coupled between the pin and the tip electrode;

a second conductor wire coupled between the annular member and the annular electrode.

29. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

an annular member having at least one port;

a first insulating sleeve molded to the pin member and having one or more portions molded through the at least one port for securing the first insulating sleeve to the annular member, wherein the pin member, the annular member and the first insulating sleeve are in fixed relation to one another;

a conductor sleeve; and

a second insulating sleeve molded to the conductor sleeve, wherein the conductor sleeve and the second insulating sleeve are in fixed relation to one another, the conductor sleeve longitudinally engaged over the annular member.

30. The connector of claim 29 wherein the first insulating sleeve includes a chamfer surface.

31. The connector of claim 29 wherein the second insulating sleeve includes a chamfer surface.

32. The connector of claim 29 wherein the second insulating sleeve includes a port for injecting adhesive between the second insulating sleeve and a sleeve of the cardiac stimulator lead.

33. The connector of claim 29 wherein

the pin member having a proximal end for contacting a conducting structure inside a cardiac stimulator and the pin member having one or more grooves;

the annular member having;

an external surface;

the annular member positioned around a portion of the pin member wherein a gap remains between the pin member and annular member;

the first insulating sleeve molded around the external surface of the annular member and through the at least one port of the annular member and filling the gap and filling the one or more grooves; and

the conductor sleeve having;

a proximal portion having an internal bore for slidably engaging the distal portion of the annular member wherein conductive contact is established between the conductor sleeve and the annular member;

a distal portion having an inner diameter capable of sliding over a sleeve of a lead and having at least one bore;

the second insulating sleeve having;

a proximal portion molded around the distal portion of the conductor sleeve and through the at least one bore wherein a portion of the mold forms a button for securing the second insulating sleeve to the conductor sleeve; and

a distal portion having an inner diameter capable of sliding over a sleeve of the cardiac stimulator lead.

34. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

a first insulating sleeve coupled to the pin member;

an annular member coupled to the first insulating sleeve;

a conductor sleeve coupled to the annular member;

a second insulating sleeve coupled to the conductor sleeve; and

a preformed insulative annular member between the first insulating sleeve and the pin member;

wherein the annular member has a longitudinally projecting flag for coupling to a conductor wire of the lead.

35. The connector of claim 34, wherein the first insulating sleeve has a first pair of external O-rings and the second insulating sleeve has a second pair of external O-rings.

36. The connector of claim 35, wherein the first pair of external O-rings being integrally molded with the first insulating sleeve and the second pair of external O-rings being integrally molded with the second insulating sleeve.

37. The connector of claim 34, wherein the conductor sleeve is welded to the annular member.

38. The connector of claim 34, wherein the conductor sleeve has a longitudinal bore for longitudinally receiving the annular member and wherein the conductor sleeve abuts the first insulating sleeve.

39. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

a first insulating sleeve coupled to the pin member;

an annular member coupled to the first insulating sleeve;

a conductor sleeve coupled to the annular member;

a second insulating sleeve coupled to the conductor sleeve; and

a preformed insulative annular member between the first insulating sleeve and the pin member;

wherein the conductor sleeve has a longitudinal bore for longitudinally receiving the annular member and wherein the conductor sleeve abuts the first insulating sleeve;

wherein the annular member has a longitudinally projecting flag for coupling to a conductor wire of the lead.

40. The connector of claim 39, wherein the first insulating sleeve has a first pair of external O-rings and the second insulating sleeve has a second pair of external O-rings.

41. The connector of claim 39, wherein the conductor sleeve is welded to the annular member.

42. A cardiac stimulator lead, comprising:

a flexible tubular sleeve having a first end and a second end;

a tip electrode coupled to the first end;

a connector coupled to the second end, the connector having a pin member having a distal end, a first insulating sleeve coupled to the pin member, an annular member coupled to the first insulating sleeve, and a conductor sleeve coupled to the annular member; and

a preformed insulative annular member between the first insulating sleeve and the pin member;

a second insulating sleeve coupled to the conductor sleeve;

a first conductor wire welded to the pin member and coupled between the connector and the tip electrode; and

a second electrode coupled to the tubular sleeve and a second conductor wire coupled between the second electrode and the annular member;

wherein the annular member has a longitudinally projecting flag and the second conductor wire is welded to the flag.

43. The cardiac stimulator lead of claim 42, wherein the first insulating sleeve has a first pair of external O-rings and the second insulating sleeve has a second pair of external O-rings.

44. The cardiac stimulator lead of claim 43, wherein the first pair of external O-rings being integrally molded with the first insulating sleeve and the second pair of external O-rings being integrally molded with the second insulating sleeve.

45. The cardiac stimulator lead of claim 42, wherein the conductor sleeve is welded to the annular member.

46. A connector for a cardiac stimulator lead, comprising:

a pin member having a distal end;

an annular member;

a first insulating sleeve molded to the pin member and the annular member, wherein the pin member, the annular member and the first insulating sleeve are in fixed relation to one another;

a conductor sleeve; and

a second insulating sleeve molded to the conductor sleeve, wherein the conductor sleeve and the second insulating sleeve are in fixed relation to one another, the conductor sleeve longitudinally engaged over the annular member;

wherein the pin member having a proximal end for contacting a conducting structure inside a cardiac stimulator and the pin member having one or more grooves;

the annular member having;

an external surface;

a proximal portion having at least one port, the annular member positioned around a portion of the pin member wherein a gap remains between the pin member and annular member;

the first insulating sleeve molded around the proximal portion of the external surface of the annular member and through the port of the annular member and filling the gap and filling the grooves; and

the conductor sleeve having;

a proximal portion having an internal bore for slidably engaging a distal portion of the annular member wherein conductive contact is established between the conductor sleeve and the annular member;

a distal portion having an inner diameter capable of sliding over a sleeve of a lead and having at least one bore;

the second insulating sleeve having;

a proximal portion molded around the distal portion of the conductor sleeve and through the at least one bore wherein a portion of the mold forms a button for securing the second insulating sleeve to the conductor sleeve; and

a distal portion having an inner diameter capable of sliding over a sleeve of the cardiac stimulator lead.

47. The connector of claim 46, wherein the first insulating sleeve includes a chamfer surface.

48. The connector of claim 46, wherein the second insulating sleeve includes a chamfer surface.

49. The connector of claim 46 wherein the second insulating sleeve includes a port for injecting adhesive between the second insulating sleeve and a sleeve of the cardiac stimulator lead.