Lead terminal multi-tool

• US 7,753,696 B2
• Filed: 05/12/2005
• Issued: 07/13/2010
• Est. Priority Date: 05/12/2005
• Status: Expired due to Fees

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Johnson, Bryan D., Sundberg, Gregory L., Hoecke, Kyle, Fangmeier, Michelle
• Primary Examiner(s): Bockelman; Mark W
• Assistant Examiner(s): Dinga; Roland
• Application Number:
  US11/127,886
• Publication Number:
  US 20060258193A1
• Time in Patent Office: 1,888 Days
• Field of Search: 439/92, 439/160, 439/169, 439/909, 600/373, 600/374, 600/585, 607/36, 607/115, 607/122, 606/41
• US Class Current: 439/92
• CPC Class Codes: A61B 5/287 Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: H01R 43/22 Hand tools

Abstract

The document discusses, among other things, apparatuses, assemblies, and methods for facilitating the installation of an implantable lead into a subject. In one example, the apparatus includes a housing having a lead terminal passageway on a first end and having an introductory opening on a second end. The lead terminal passageway is adapted to be inserted over a lead terminal end. The introductory opening is adapted to accept a stylet and guide it into a pin lumen. In another example, the apparatus includes one or both of at least one protective terminal contact device and a securing contact device allowing electrical contact to be made with a lead terminal ring or a lead terminal pin without damaging or bridging between such elements of the lead terminal end. The securing contact device is also adapted to mechanically engage the lead terminal pin thereto for facilitating actuation of fixation devices.

Claims

1. An apparatus comprising:

a housing, including a lead terminal passageway on a housing first end and an introductory opening on a housing second end, the lead terminal passageway and the introductory opening communicatively coupling within the housing;

at least one protective terminal contact device incorporated with the housing, each protective terminal contact device including an exterior electrically conductive portion accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, with an interior electrically conductive portion electrically conductive with the exterior electrically conductive portion, the interior electrically conductive portion mechanically and electrically engageable with a multi-conductor lead terminal component to electrically engage a first conductor of the lead terminal component while the multi-conductor lead terminal component is located in the lead terminal passageway; and

a securing contact device incorporated with the housing and accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, the securing contact device configured to mechanically fix the multi-conductor lead terminal component to the housing to rotate the multi-conductor lead terminal component with the housing, the securing contact device further configured to electrically engage a second conductor of the multi-conductor lead terminal component through the housing to provide an electrical contact to the multi-conductor lead terminal component, the electrical contact spaced apart from the multi-conductor lead terminal component.

2. The apparatus as recited in claim 1, wherein the securing contact device is adapted to be in electrical communication with a lead terminal pin to provide a terminal adapted to electrically engage an analyzer conductor with the lead terminal pin.

3. The apparatus as recited in claim 1, wherein the exterior electrically conductive portion is electrically engageable with an analyzer conductor and the interior electrically conductive portion is electrically engageable with a lead terminal ring.

4. The apparatus as recited in claim 1, wherein the introductory opening includes a first diameter, the first diameter continuously narrowing to a diameter larger than an outer diameter of a stylet.

5. The apparatus as recited in claim 1, wherein the housing further includes one or more notch, the one or more notch is adapted to align with a position of a lead terminal pin when inserted into the lead terminal passageway.

6. The apparatus as recited in claim 1, wherein one or both of the at least one protective terminal contact device and the securing contact device include a terminal polarity contact indicator, each terminal polarity contact indicator providing a user-detectable electrical polarity indication of a lead component to which the at least one protective terminal contact device or the securing contact device is adapted to contact.

7. The apparatus as recited in claim 1, wherein one or both of the at least one protective terminal contact device and the securing contact device are radiopaque.

8. The apparatus as recited in claim 1, wherein the housing includes a housing first section and a housing second section, the housing second section is rotatable independent from the housing first section.

9. The apparatus as recited in claim 1, further comprising a rotational handle, a rotational handle first end of the rotational handle couplable to, and matable with, the housing.

10. The apparatus as recited in claim 1, wherein the lead terminal passageway is insertable over a lead terminal pin and at least a portion of one or more lead terminal rings with the electrically conductive portion of the at least one protective terminal contact device mechanically and electrically engageable with at least one lead terminal ring.

11. An apparatus comprising:

a housing, including a lead terminal passageway insertable over a lead terminal pin and at least a portion of one or more lead terminal rings on a housing first end, and including an introductory opening on a housing second end, the lead terminal passageway and the introductory opening communicatively coupling within the housing;

a securing contact device extending through the housing to provide an electrical contact to the lead terminal pin, the electrical contact spaced apart from the lead terminal pin, the securing contact device accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, the securing contact device including a first position adapted to allow the lead terminal pin to be inserted within the housing and a second position adapted to mechanically engage the conductive lead terminal pin thereto with the lead in alignment with the housing to mechanically fix the lead to the housing to rotate the lead with the housing; and

at least one protective terminal contact device, each protective terminal contact device including an exterior electrically conductive portion accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, with an interior electrically conductive portion electrically conductive with the exterior electrically conductive portion, the interior electrically conductive portion mechanically and electrically engageable with a conductive lead terminal ring.

12. The apparatus as recited in claim 11, wherein one or both of the securing contact device and at least one protective terminal contact device include a terminal polarity contact indicator, each terminal polarity contact indicator providing a user-detectable electrical polarity indication of a lead component to which the securing contact device or the at least one protective terminal contact device is adapted to contact.

13. The apparatus as recited in claim 11, wherein the housing further includes a housing first section and a housing second section, the housing second section rotatable independent from the housing first section.

14. The apparatus as recited in claim 11, wherein the lead terminal passageway and the introductory opening communicatively couple within the housing defining a stylet receiving and withdrawing path.

15. The apparatus of claim 11, wherein a housing rotation handle is coupled to the housing.

16. The apparatus of claim 15, wherein a distal portion of the lead includes a helix shaped fixation portion.

17. An apparatus comprising:

a multi-conductor lead extending from a lead terminal end to a lead distal end, the lead terminal end including a conductive lead terminal pin and at least one conductive lead terminal ring electrically insulated from the lead terminal pin;

a housing, including a lead terminal passageway on a housing first end and an introductory opening on a housing second end, the lead terminal passageway insertable over at least a portion of the lead terminal end, the lead terminal passageway and the introductory opening communicatively coupling within the housing;

at least one protective terminal contact device incorporated with the housing, each protective terminal contact device including an exterior electrically conductive portion accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, with an interior electrically conductive portion electrically conductive with the exterior electrically conductive portion, the interior electrically conductive portion mechanically and electrically engageable with the at least one lead terminal ring; and

a securing contact device incorporated with the housing and accessible from outside the housing while a stylet is disposed into the introductory opening, through the entire housing including the lead terminal passageway and into a lead, the securing contact device adapted to mechanically fix the lead terminal pin to the housing to rotate the lead terminal pin with the housing, the securing contact device further configured to electrically engage the lead terminal pin through the housing to provide an electrical contact to the lead terminal pin, the electrical contact spaced apart from the lead terminal pin.

18. The apparatus as recited in claim 17, further comprising a stylet insertable through the introductory opening.

19. The apparatus as recited in claim 17, further comprising a rotational handle, a first end of the rotational handle engageable with the housing.