Bi-directional connector assembly for an implantable medical device

• US 7,933,652 B2
• Filed: 04/16/2007
• Issued: 04/26/2011
• Est. Priority Date: 01/18/2007
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: McMullen, Raymond F., Phillips, William C.
• Primary Examiner(s): Layno; Carl H
• Assistant Examiner(s): Kimball; Jeremiah T
• Application Number:
  US11/735,553
• Publication Number:
  US 20080208290A1
• Time in Patent Office: 1,471 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. A system comprising:

(i) an implantable signal generator comprising;

a housing;

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

a lumen extending through the connector block from the first surface to the second surface; and

a plurality of contacts housed within the lumen;

(ii) electronic circuitry that is operably coupled to the implantable signal generator;

(iii) a power source that is operably coupled to the implantable signal generator; and

(iv) at least one lead comprising;

at least one electrode;

at least one electrode connector; and

at least one electrode conductor that electrically connects the at least one electrode and the at least one electrode connector;

wherein the connector block is operably coupled with the housing,

wherein the plurality of contacts are operably coupled with the electronic circuitry,

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

wherein at least one of the plurality of contacts is not electrically connected with an electrode connector when the at least one lead is received in the lumen,

and wherein the electronic circuitry is configured to detect the at least one of the plurality of contacts that is not electrically connected with an electrode connector in order to determine one piece of information regarding the at least one lead that is received in the lumen.

2. The system according to claim 1, wherein the lead further comprises a flange.

3. The system according to claim 1, wherein the system further comprises a sealing plug configured to fit within an opening of the lumen.

4. The system according to claim 1, wherein the lumen has substantially the same average diameter throughout its length.

5. The system according to claim 1, wherein the housing and the connector block are two separate pieces that are operably coupled together.

6. The system according to claim 1, wherein the plurality of contacts comprises both coil springs and set screws.

7. The system according to claim 1, wherein the plurality of contacts comprises seven coil springs and two set screws.

8. The system according to claim 6, wherein the two set screws are closest respectively to the first and second surfaces of the connector block.

9. The system according to claim 1 further comprising 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.

10. The system according to claim 9, wherein the computer readable medium comprises random access memory (RAM), read-only memory (ROM), electronically-erasable programmable ROM (EEPROM), or flash memory.

11. The implantable signal generator according to claim 1, wherein the at least one of the plurality of contacts that is not electrically connected with an electrode connector is determined by measuring impedance.

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

13. The implantable signal generator according to claim 9, wherein the process further comprises transmitting the information regarding the at least one lead to a programmer.

14. The implantable signal generator according to claim 9, wherein the at least one characteristic is impedance, 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.