Electrical connector for an in-body multi-contact medical electrode device
An electrical connector for connecting a linear-array plural-contact tail of an in-body multi-contact medical electrode device. The connector includes an elongate body member defining an elongate void extending along the length of the body member. An array of electrical conductors are secured in the body member and project into the elongate void to facilitate electrical connection of the contacts on the tail when the plural-contact tail is in the elongate void. A cylindrical carrier member is rotatably contained in the elongate void, the carrier member itself forms a tail-receiving subvoid.
1. In an electrical connector for connecting a linear-array plural-contact tail of an in-body multi-contact medical electrode device, the connector including an elongate body member having proximal and distal ends and defining an elongate void extending along the length of the body member, an array of electrical conductors secured in the body member and projecting into the elongate void to facilitate electrical connection of the contacts on the tail when the plural-contact tail is in the elongate void, the improvement comprising a cylindrical carrier member rotatably contained in the elongate void, the carrier member itself forming a tail-receiving subvoid exposed along the outer surface of the carrier member to expose the contacts to engagement by the array of electrical conductors in the elongate void when the carrier member is rotated to bring the tail-containing subvoid into registry with the electrical conductors, the carrier member including outer-surface notches adjoining the subvoid to more fully expose the contacts of the tail at the outer surface of the carrier member.
2. The multi-contact medical connector of claim 1 wherein the carrier member includes a finger tab secured to the carrier member and extending through an opening in the body member to facilitate pivoting of the carrier member between tail insertion and tail connection positions.
3. The multi-contact medical connector of claim 2 wherein the carrier member is held in the tail connection position through frictional engagement between the finger tab and body member.
4. The multi-contact medical connector of claim 3 wherein the body member includes a detent which contacts the finger tab through frictional engagement and holds the connector in a locked position.
5. The multi-contact medical connector of claim 1 wherein the electrical conductors are spring-loaded pin plunger devices.
6. The multi-contact medical connector of claim 5 wherein the spring-loaded pin plunger devices on the body member extend from a presentation surface at an angle substantially perpendicular to the outer surface of the carrier member.
7. The multi-contact medical connector of claim 6 wherein the spring-loaded pin plunger devices project at least halfway across and into the subvoid of the carrier member when the plural-contact tail is not in place.
8. The multi-contact medical connector of claim 5 wherein at the tail-connection position the carrier member positions the electrode tail such that the spring-loaded pin plungers are just beyond-center with respect to the plural contacts of the tail, thereby providing reliable electrical contact and helping to maintain the tail connection position.
9. The multi-contact medical connector of claim 1 further including an end caps for snap-engagement with the proximal and distal ends of the body member.
10. The multi-contact medical connector of claim 9 wherein the proximal end cap includes an arcuate slot having a radial cross dimension approximating the diameter of the subvoid, such that the plural-contact tail moves along the arcuate slot when the carrier member pivots between tail insertion and tail connection positions.
11. The multi-contact medical connector of claim 10 wherein the arcuate slot has a greater cross dimension at the tail insertion position than at the tail connection position, whereby mechanical engagement of the tail with the slot in the tail connection position facilitates holding the tail in engagement with the connector.
12. The multi-contact medical connector of claim 1 wherein the distal end of the body member includes an opening through which a multi-wire electrical cable extends to allow connection of individual wires to the electrical conductors.
13. The multi-contact medical connector of claim 12 wherein the body member has a pair of opposed sidewalls and an edge therebetween forming a channel therealong receiving such wires, the wires and attachments thereof to the electrical conductors being sealed in the channel by a body of epoxy-like substance therealong.
14. The multi-contact medical connector of claim 13 further including:
ribs integrally-formed with the opposed sidewalls; and
elongate apertures formed on each end cap;
whereby the end caps are held on the body member through frictional engagement between the ribs and apertures.
15. In combination, (a) an electrical connector comprising an elongate body member having proximal and distal ends and defining an elongate void extending along the length of the body member, an array of electrical conductors secured in the body member and projecting into the elongate void to facilitate electrical connection of the contacts on the tail when the plural-contact tail is in the elongate void; and (b) a linear-array plural-contact tail inserted within the elongate void, the improvement comprising a cylindrical carrier member rotatably contained in the elongate void, the carrier member itself forming a tail-receiving subvoid exposed along the outer surface of the carrier member to expose the contacts to engagement by the array of electrical conductors in the elongate void when the carrier member is rotated to bring the tail-containing subvoid into registry with the electrical conductors, the carrier member including outer-surface notches adjoining the subvoid to more fully expose the contacts of the tail at the outer surface of the carrier member.
16. The multi-contact medical connector of claim 15 wherein the carrier member includes a finger tab secured to the carrier member and extending through an opening in the body member to facilitate pivoting of the carrier member between tail insertion and tail connection positions.
17. The multi-contact medical connector of claim 16 wherein the carrier member is held in the tail connection position through frictional engagement between the finger tab and body member.
18. The multi-contact medical connector of claim 17 wherein the body member includes a detent which contacts the finger tab through frictional engagement and holds the connector in a locked position.
19. The multi-contact medical connector of claim 15 wherein the electrical conductors are spring-loaded pin plunger devices.
20. The multi-contact medical connector of claim 19 wherein the spring-loaded pin plunger devices on the body member extend from a presentation surface at an angle substantially perpendicular to the outer surface of the carrier member.
21. The multi-contact medical connector of claim 20 wherein the spring-loaded pin plunger devices project at least halfway across and into the subvoid of the carrier member when the plural-contact tail is not in place.
22. The multi-contact medical connector of claim 19 wherein at the tail-connection position the carrier member positions the electrode tail such that the spring-loaded pin plungers are just beyond-center with respect to the plural contacts of the tail, thereby providing reliable electrical contact and helping to maintain the tail connection position.
23. The multi-contact medical connector of claim 15 further including an end caps for snap-engagement with the proximal and distal ends of the body member.
24. The multi-contact medical connector of claim 22 wherein the proximal end cap includes an arcuate slot having a radial cross dimension approximating the diameter of the subvoid, such that the plural-contact tail moves along the arcuate slot when the carrier member pivots between tail insertion and tail connection positions.
25. The multi-contact medical connector of claim 24 wherein the arcuate slot has a greater cross dimension at the tail insertion position than at the tail connection position, whereby mechanical engagement of the tail with the slot in the tail connection position facilitates holding the tail in engagement with the connector.
26. The multi-contact medical connector of claim 15 wherein the distal end of the body member includes an opening through which a multi-wire electrical cable extends to allow connection of individual wires to the electrical conductors.
27. The multi-contact medical connector of claim 26 wherein the body member has a pair of opposed sidewalls and an edge therebetween forming a channel therealong receiving such wires, the wires and attachments thereof to the electrical conductors being sealed in the channel by a body of epoxy-like substance therealong.
28. The multi-contact medical connector of claim 27 further including:
ribs integrally-formed with the opposed sidewalls; and
elongate apertures formed on each end cap;
whereby the end caps are held on the body member through frictional engagement between the ribs and apertures.