Bi-directional connector assembly for an implantable medical device

• US 8,364,268 B2
• Filed: 04/18/2011
• Issued: 01/29/2013
• Est. Priority Date: 01/18/2007
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Phillips, William C., McMullen, Raymond F.
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): KIMBALL, JEREMIAH T
• Application Number:
  US13/088,559
• Publication Number:
  US 20110196448A1
• Time in Patent Office: 652 Days
• Field of Search: 607/27
• US Class Current: 607/37
• CPC Class Codes: A61N 1/3605 Implantable neurostimulators for stimulating central or peripheral nerve system
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections
• CPC Class Codes: A61N 2001/083 Monitoring integrity of contacts, e.g. by impedance measurement

Abstract

An implantable signal generator including electronic circuitry, a computer readable medium, and a connector block with a lumen which receives at least one lead. The at least one lead has at least one electrode connector while the lumen of the connector block has a plurality of contacts operably coupled to the electronic circuitry. The computer readable medium contains instructions for carrying out a process to determine at least one piece of information regarding the at least one lead within the lumen based on an electrode connector being electrically connected with the at least one of the plurality of contacts, and an electrode connector not being electrically connected with the at least one of the plurality of contacts.

Claims

1. An implantable signal generator comprising:

a housing;

a connector block having a first surface and a second surface;

electronic circuitry contained within the housing;

a power source contained within the housing;

a lumen extending through the connector block from the first surface to the second surface, wherein the lumen has a length from the first surface to the second surface, wherein the lumen is configured to receive at least one lead, wherein said lead comprises at least one electrode connector;

a plurality of contacts within the lumen, wherein the plurality of contacts are operably coupled to the electronic circuitry; and

a non-transitory computer readable medium containing instructions for carrying out a process to determine at least one piece of information regarding a lead that is received within the lumen, the process comprising the steps of;

measuring at least one characteristic of at least one of the plurality of contacts; and

determining which of two ranges the measured characteristic fits, wherein the two ranges of characteristics correspond to an electrode connector being electrically coupled with the at least one of the plurality of contacts, and an electrode connector not being electrically coupled with the at least one of the plurality of contacts; and

wherein the range which the measured characteristic fits is used in determining the at least one piece of information regarding the lead.

2. The implantable signal generator according to claim 1, wherein the lumen has substantially the same average diameter throughout its length.

3. The implantable signal generator according to claim 1, wherein the housing and the connector block are two separate pieces that are operably coupled together.

4. The implantable signal generator according to claim 1, wherein the plurality of contacts comprises both coil springs and set screws.

5. The implantable signal generator according to claim 1, wherein the plurality of contacts comprises seven coil springs and two set screws.

6. The implantable signal generator according to claim 5, wherein the two set screws are closest respectively to the first and second surfaces of the connector block.

7. The implantable signal generator according to claim 1, wherein the computer readable medium comprises random access memory (RAM), read-only memory (ROM), electronically-erasable programmable ROM (EEPROM), or flash memory.

8. The implantable signal generator according to claim 1, wherein the at least one characteristic that is measured is impedance.

9. The implantable signal generator according to claim 1, wherein the process further comprises measuring at least one characteristic of each of the plurality of contacts.

10. The implantable signal generator according to claim 1, wherein the process further comprises transmitting the information regarding the at least one lead to a programmer.

11. The implantable signal generator according to claim 10, wherein the process further comprises utilizing the transmitted information in programming the implantable signal generator.

12. An implantable signal generator comprising:

a housing;

a connector block having a first surface and a second surface;

electronic circuitry contained within the housing;

a power source contained within the housing;

a lumen extending through the connector block from the first surface to the second surface, wherein the lumen is configured to receive at least one lead; and

a plurality of contacts housed within the lumen, wherein the plurality of contacts are operably coupled to the electronic circuitry,

wherein each of the plurality of contacts are configured to allow electrical connection with at least one electrode connector of at least one lead when the at least one lead is received in the lumen,

wherein at least one of the plurality of contacts is not electrically coupled with an electrode connector when the at least one lead can be received in the lumen of the implantable signal generator, and

wherein the electrical circuitry is configured to detect the at least one of the plurality of contacts that is not electrically connected with an electrode connector of a lead in order to determine at least one piece of information regarding the at least one lead that can be received in the lumen of the implantable signal generator.

13. A process for determining at least one piece of information regarding a lead,

wherein the lead comprises at least one electrode connector,

wherein the lead is received within a lumen,

wherein the lumen extends through a connector block of an implantable signal generator from a first surface to a second surface of the connector block,

wherein the lumen is configured to receive the at least one lead,

wherein the lumen houses a plurality of contacts,

wherein the plurality of contacts are operably coupled to electronic circuitry of the implantable signal generator;

the process comprising the steps of;

a) measuring at least one characteristic of at least one of the plurality of contacts; and

b) determining whether the measured characteristic is within a first range, or a second range, wherein the first range is characteristic of the at least one electrode connector being connected to the at least one contact, and the second range is characteristic of the at least one electrode connector not being connected to the at least one contact,

wherein whether the characteristic is within the first range or the second range provides at least one piece of information regarding the at least one lead.

14. The process according to claim 13, wherein the at least one characteristic is impedance.

15. The process according to claim 13, wherein the at least one piece of information is chosen from the group consisting of the number of electrodes on the lead, the type of electrodes on the lead, whether the lead includes a sensing electrode, which side of the connector block the lead is entering into, how many leads are entering the connector block, whether the lead is MRI safe or not MRI safe, and combinations thereof.

16. The process according to claim 13 further comprising measuring at least one characteristic of a second contact.

17. The process according to claim 13 further comprising transmitting the at least one piece of information regarding the lead into a programmer.

18. The process according to claim 17, wherein the process further comprises utilizing the transmitted information in programming the implantable signal generator.