Systems and methods for making and using improved contact arrays for electrical stimulation systems

• US 9,833,611 B2
• Filed: 04/05/2016
• Issued: 12/05/2017
• Est. Priority Date: 04/10/2015
• Status: Active Grant

• Current Assignee: Boston Scientific Neuromodulation Corporation (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Neuromodulation Corporation (Boston Scientific Corporation)
• Inventors: Govea, Michael X., Howard, Joshua Dale
• Primary Examiner(s): Stice, Paula J
• Application Number:
  US15/091,396
• Publication Number:
  US 20160296745A1
• Time in Patent Office: 609 Days
• 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 1/0529 Electrodes for brain stimulation
• CPC Class Codes: A61N 1/0551 Spinal or peripheral nerve electrodes
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections

Abstract

An electrical stimulation lead or lead extension includes a body having an outer surface, a proximal end, a proximal portion, at least one distal portion, an outer surface, a perimeter, and a longitudinal length, the body defining an alignment slit extending distally from the proximal end of the body and splitting the proximal portion of the body into two transversely space-apart sections; first contacts disposed along the distal portion of the body; segmented second contacts disposed along the proximal portion of the body, where each segmented second contact extends around less than the entire perimeter of the body and is separated from all other segmented second contacts by portions of the body or the alignment slit; and conductors electrically coupling the first contacts to the second contacts.

Claims

1. An electrical stimulation lead or lead extension, comprising:

a body having an outer surface, a proximal end, a proximal portion, at least one distal portion, a perimeter, and a longitudinal length, the body defining an alignment slit extending distally from the proximal end of the body and splitting the proximal portion of the body into two transversely spaced-apart, non-cylindrical arc sections;

a plurality of first contacts disposed along the at least one distal portion of the body;

a plurality of non-cylindrical segmented second contacts disposed along the proximal portion of the body, wherein each segmented second contact extends around less than the entire perimeter of the body and is separated from all other segmented second contacts by portions of the body or the alignment slit; and

a plurality of conductors electrically coupling the plurality of first contacts to the plurality of second contacts.

2. The electrical stimulation lead or lead extension of claim 1, wherein the segmented second contacts are arranged in a plurality of sets of segmented second contacts, wherein each set of segmented second contacts comprises at least two of the segmented second contacts disposed in a circumferential arrangement at a same longitudinal position of the lead.

3. The electrical stimulation lead or lead extension of claim 2, wherein the alignment slit extends between at least two of the segmented second contacts of each of the sets of segmented second contacts.

4. The electrical stimulation lead or lead extension of claim 2, wherein each of the sets of segmented second contacts contains exactly two segmented second contacts.

5. The electrical stimulation lead or lead extension of claim 1, wherein, each of the two sections further defines a bendable portion distal to all of the segmented second contacts, wherein the bendable portions of the two sections allow the sections to be sufficiently separated so that the sections can be inserted into different connectors.

6. The electrical stimulation lead or lead extension of claim 1, wherein the first contacts are electrodes and the segmented second contacts are segmented terminals and the electrical stimulation lead or lead extension is an electrical stimulation lead.

7. The electrical stimulation lead or lead extension of claim 1, wherein the first contacts are connector contacts and the segmented second contacts are segmented terminals and the electrical stimulation lead or lead extension is a lead extension.

8. An electrical stimulation system comprising:

the electrical stimulation lead or lead extension of claim 1; and

a first connector defining a connector lumen configured and arranged to receive at least a portion of the proximal end of the body of the electrical stimulation lead or lead extension, wherein the first connector comprises a plurality of segmented connector contacts disposed along the connector lumen.

9. The electrical stimulation system of claim 8, further comprising a control module, wherein the control module comprises the connector, a housing, and an electrical subassembly disposed in the housing and electrically coupled to the connector contacts of the connector.

10. The electrical stimulation system of claim 8, further comprising a lead extension, wherein the lead extension comprises the connector.

11. The electrical stimulation system of claim 8, wherein the connector contacts of the first connector are arranged in a plurality of sets of segmented connector contacts, wherein each set of segmented connector contacts comprises at least two of the segmented connector contacts disposed in a circumferential arrangement at a same longitudinal position along the connector lumen.

12. The electrical stimulation system of claim 8, wherein the connector further comprises a connector housing containing the connector lumen and defining an opening into the connector lumen, and

an alignment structure extending across the connector lumen and configured and arranged to mate with the alignment slit of the body of the electrical stimulation lead or lead extension.

13. The electrical stimulation system of claim 8, further comprising a second connector defining a connector lumen configured and arranged to receive the proximal end of the body of the electrical stimulation lead or lead extension, wherein the second connector comprises a plurality of segmented connector contacts disposed along the connector lumen,

wherein the electrical stimulation lead or lead extension is configured and arranged so that the alignment slit separates the proximal portion of the body into a first branch and a second branch, wherein each of the first and second branched further defines a bendable portion distal to all of the segmented second contacts, wherein the bendable portions of the first and second branches allow the first and second branches to be sufficiently separated so that the first and second branches can be separately inserted into the first and second connectors, respectively.

14. An electrical stimulation lead or lead extension, comprising:

a body having an outer surface, a proximal end, a cylindrical proximal portion, at least one distal portion, a perimeter, and a longitudinal length, the body defining an alignment slit extending distally from the proximal end of the body and splitting the proximal portion of the body into two transversely spaced apart, non-cylindrical arc sections;

a plurality of first contacts disposed along the at least one distal portion of the body;

a plurality of non-cylindrical segmented second contacts disposed along the proximal portion of the body, wherein each segmented second contact extends around less than the entire perimeter of the body a is separated from all other segmented second contacts by portions of the body or the alignment slit;

a plurality of conductors electrically coupling the plurality of first contacts to the plurality of second contacts; and

a retention sleeve disposed distal of all of the segmented second contacts.

15. The electrical stimulation lead or lead extension of claim 14, wherein the alignment slit separates the retention sleeve into two laterally spaced-apart pieces.

16. The electrical stimulation lead or lead extension of claim 14, wherein the alignment slit terminates proximal to the retention sleeve.

17. An electrical stimulation system comprising:

the electrical stimulation lead or lead extension of claim 14; and

a first connector defining a connector lumen configured and arranged to receive at least a portion of the proximal end of the body of the electrical stimulation lead or lead extension, wherein the first connector comprises a plurality of segmented connector contacts disposed along the connector lumen.

18. The electrical stimulation system of claim 17, further comprising a control module, wherein the control module comprises the connector, a housing, and an electrical subassembly disposed in the housing and electrical coupled to the connector contacts of the connector.

19. The electrical stimulation system of claim 17, further comprising a lead extension, wherein the lead extension comprises the connector.

20. The electrical stimulation lead or lead extension of claim 14, wherein the first contacts are electrodes and the segmented second contacts are segmented terminals and the electrical stimulation lead or lead extension is an electrical stimulation lead.