Medical cable connector for a medical lead providing an electrical receptacle that is movable relative to an outer body

• US 9,498,618 B2
• Filed: 02/10/2015
• Issued: 11/22/2016
• Est. Priority Date: 03/31/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Stetson, Daniel J., Tronnes, Carole A., Lee, David W.
• Primary Examiner(s): DIETRICH, JOSEPH M
• Application Number:
  US14/617,934
• Publication Number:
  US 20150151110A1
• Time in Patent Office: 651 Days
• US Class Current: 1/1
• 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 1/3752 Details of casing-lead connections
• CPC Class Codes: H01R 13/4538 Covers sliding or withdrawing in the direction of engagement
• CPC Class Codes: H01R 13/516 Means for holding or embracing insulating body, e.g. casing , hoods
• CPC Class Codes: H01R 13/71 Contact members of coupling parts operating as switch , e.g. linear or rotational movement required after mechanical engagement of coupling part to establish electrical connection
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: H01R 24/38 having concentrically or coaxially arranged contacts
• CPC Class Codes: H01R 24/58 Contacts spaced along longitudinal axis of engagement
• CPC Class Codes: H01R 4/00 Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
• CPC Class Codes: H01R 43/26 for engaging or disengaging the two parts of a coupling device structural association with two-part coupling device H01R13/629
• CPC Class Codes: Y10T 29/49174 Assembling terminal to elongated conductor

Abstract

A medical cable connector of a medical cable receives a medical lead while an electrical receptacle within the medical cable connector is placed into a distal position relative to an outer body of the medical cable connector. The electrical receptacle is retracted to a proximal position once insertion of the medical lead into the medical cable connector is completed. The electrical receptacle may be mounted to an inner body which moves relative to the outer body. A biasing member may be present to bias the inner body to a particular position. A slider may be present to provide a clinician with a surface to touch when applying force to position the electrical receptacle in the distal position for insertion of the medical lead. Various other features may be present to facilitate insertion of the medical lead and/or to maintain the position of the electrical receptacle relative to the outer body.

Claims

1. A method of attaching a medical lead having at least a first electrical conductor exposed on a proximal end to a medical cable connector, comprising:

providing the medical cable connector having an outer body defining a longitudinal axis and with an opening at a distal end, an inner body contained within the outer body while being movable along the longitudinal axis and having at least a first electrical receptacle;

moving the inner body to a distal position within the outer body;

while the inner body is in the distal position, inserting the proximal end of the first electrical conductor into the opening at the distal end of the outer body and into the first electrical receptacle of the inner body; and

after the proximal end of the first electrical conductor is inserted into the first electrical receptacle of the inner body, then moving the inner body including the electrical receptacle and proximal end of the electrical conductor to a proximal position within the outer body.

2. The method of claim 1, wherein the medical cable connector further comprises a slider attached to the inner body and exposed through an aperture in the outer body while being movable along the longitudinal axis, the method further comprising:

moving the slider relative to the aperture to move the inner body to the distal position; and

moving the slider relative to the aperture to move the inner body the proximal position.

3. The method of claim 2, wherein the medical cable connector further has a biasing member positioned to bias the inner body toward the proximal position, wherein moving the slider to move the inner body to the distal position comprises applying a force to the slider that opposes the biasing member, and wherein moving the slider to move the inner body to the proximal position comprises releasing the force to allow the biasing member to return the inner body to the proximal position.

4. The method of claim 3, wherein the outer body includes an abutment and wherein the inner body includes an abutment, wherein the biasing member is a coil spring with a distal end contacting the abutment of the outer body and with a proximal end contacting the abutment of the inner body.

5. The method of claim 2, wherein moving the slider to move the inner body to the distal position comprises applying a force to the slider in a direction toward the distal position, and wherein moving the slider to move the inner body to the proximal position comprises applying a force to the slider in a direction toward the proximal position.

6. The method of claim 1, wherein the medical cable connector comprises a second electrical receptacle axially spaced from the first electrical receptacle on the inner body, wherein the medical lead includes a second electrical conductor exposed on the proximal end and axially spaced from the first electrical conductor exposed on the proximal end, and wherein inserting the proximal end of the first electrical conductor into the opening at the distal end of the outer body and into the first electrical receptacle of the inner body comprises passing the first electrical conductor through the second electrical receptacle prior to the first electrical conductor reaching the first electrical receptacle.

7. The method of claim 2, wherein the outer housing includes detents and wherein the slider includes protrusions, the method further comprising placing the protrusions into the detents to hold the inner body in a fixed relationship to the outer body.

8. The method of claim 2, wherein the aperture of the outer housing includes a longitudinal axis and further includes a slot angled relative to the longitudinal axis, the method further comprising moving the slider into the slot to hold the inner body in a fixed relationship to the outer body.

9. The method of claim 1, wherein the proximal end of the medical lead is more rigid than a remainder of the medical lead, the method further comprising grasping an area of the more rigid proximal end until inserting the medical lead is completed.

10. A medical cable connector, comprising:

an outer body defining a longitudinal axis and with an opening at a distal end;

an inner body contained within the outer body while being movable along the longitudinal axis; and

a first electrical receptacle mounted to the inner body and contained within the outer body; and

a second electrical receptacle mounted to the inner body and spaced in the direction of the longitudinal axis from the first electrical receptacle on the inner body.

11. The medical cable connector of claim 10, wherein the outer body includes an aperture, the cable connector further comprising:

a slider attached to the inner body and exposed through the aperture in the outer body while being movable along the longitudinal axis, the slider positioning the inner body and the electrical receptacle within the outer body.

12. The medical cable connector of claim 11, further comprising:

a biasing member positioned to bias the inner body toward a proximal position, and wherein the slider is movable against the bias to move the inner body to a distal position.

13. The medical cable connector of claim 12, wherein the outer body includes an abutment and wherein the inner body includes an abutment, wherein the biasing member is a coil spring with a distal end contacting the abutment of the outer body and with a proximal end contacting the abutment of the inner body.

14. The medical cable connector of claim 11, wherein the outer body includes detents and wherein the slider includes protrusions such that when the protrusions are placed into the detents the inner body is held in a fixed relationship to the outer body.

15. The medical cable connector of claim 11, wherein the aperture of the outer body includes a longitudinal axis and further includes a slot angled relative to the longitudinal axis such that when the slider is moved into the slot the inner body is held in a fixed relationship to the outer body.

16. The medical cable connector of claim 10, wherein the inner body includes a passageway from a distal end to the first electrical receptacle, the passageway being tapered from the distal end to an area in closer proximity to the first electrical receptacle.

17. A medical system, comprising:

a medical device containing electrical circuitry that produces stimulation signals;

a medical cable including at least one electrical conductor surrounded by an insulator, the medical cable including a proximal end where the electrical conductor is electrically connected to the electrical circuit of the medical device and including a distal end;

a medical cable connector present at the distal end of the medical cable, the medical cable connector comprising;

an outer body defining a longitudinal axis and with an opening at a distal end;

an inner body contained within the outer body while being movable along the longitudinal axis; and

an electrical receptacle mounted to the inner body and contained within the outer body, the electrical receptacle being electrically connected to the electrical conductor of the medical cable.

18. The medical system of claim 17, wherein the outer body includes an aperture, the cable connector further comprising:

a slider attached to the inner body and exposed through the aperture in the outer body while being movable along the longitudinal axis, the slider positioning the inner body and the electrical receptacle within the outer body.

19. The medical system of claim 18, wherein the medical cable connector further comprises:

a biasing member positioned to bias the inner body toward a proximal position, and wherein the slider is movable against the bias to move the inner body to a distal position.

20. The medical system of claim 19, wherein the outer body includes an abutment and wherein the inner body includes an abutment, wherein the biasing member is a coil spring with a distal end contacting the abutment of the outer body and with a proximal end contacting the abutment of the inner body.

21. The medical system of claim 17, further comprising a second electrical receptacle axially spaced from the first electrical receptacle on the inner body.

22. The medical system of claim 18, wherein the outer housing includes detents and wherein the slider includes protrusions such that when the protrusions are placed into the detents the inner body is held in a fixed relationship to the outer body.

23. The medical system of claim 18, wherein the aperture of the outer housing includes a longitudinal axis and further includes a slot angled relative to the longitudinal axis such that when the slider is moved into the slot the inner body is held in a fixed relationship to the outer body.

24. The medical system of claim 17, wherein the inner body includes a passageway from a distal end to the first electrical receptacle, the passageway being tapered from the distal end to an area in proximity to the first electrical receptacle.

25. The medical system of claim 17, further comprising a medical lead having a first electrical conductor exposed on a proximal end of the medical lead, having an electrode located on a distal end of the medical lead, and having an intermediate electrical conductor that interconnects the first electrical conductor and the electrode and that is surrounded by an insulator.

26. The medical system of claim 25, wherein the proximal end of the medical lead is more rigid than the intermediate electrical conductor surrounded by the insulator, wherein the first electrical conductor is present within the first electrical receptacle while at least a portion of the proximal end of the medical lead is outside of the outer housing when the inner body and the electrical receptacle are at a distal position within the outer body, and wherein the first portion of the first electrical conductor is present within the first electrical receptacle while the portion of the proximal end of the medical lead is inside of the outer housing when the inner body and the electrical receptacle are at a proximal position within the outer body.