EP-4739388-A1 - COILED RING CONTACTS FOR ELECTRICAL STIMULATION SYSTEMS AND METHODS OF MAKING AND USING SAME

Abstract

A connector assembly includes a coiled ring contact having a contact housing with a first part and a second part attached to the first part, wherein at least the first part includes a first radial sidewall and a first lateral sidewall extending laterally from the first radial sidewall, the first radial sidewall and the first lateral sidewall defining a pocket. The coiled ring contact also includes a coiled ring disposed within the contact housing, wherein the coiled ring contact is configured for disposal of the coiled ring within the pocket defined by the first part of the contact housing and prior to attachment of the second part to the first part.

Inventors

• NAGERI, Ranjan, Krishna Mukhari
• CISNA, AUSTIN
• GREDZENS, Alexander, Daniel
• RANPURA, HIMANSHU

Assignees

• Boston Scientific Neuromodulation Corporation

Dates

Publication Date

20260513

Application Date

20240911

Claims (15)

1. 1. A connector assembly, comprising: a connector body having an elongated shape with a first end, an opposing second end, and a longitudinal axis, the connector body defining a port at the first end configured to receive a proximal part of a lead or lead extension; and a plurality of coiled ring contacts axially spaced-apart within the connector body and collectively forming a lumen that extends from the port along the longitudinal axis of the connector body, each coiled ring contact comprising a contact housing comprising a first part and a second part attached to the first part, wherein at least the first part comprises a first radial sidewall and a first lateral sidewall extending laterally from the first radial sidewall, the first radial sidewall and the first lateral sidewall defining a pocket, and a coiled ring disposed within the contact housing, wherein the coiled ring contact is configured for disposal of the coiled ring within the pocket defined by the first part of the contact housing and prior to attachment of the second part to the first part, wherein the coiled ring is positioned within the contact housing so that insertion of the proximal part of the lead or lead extension through the coiled ring contact results in contact between the coiled ring and the lead or lead extension.
2. 2. The connector assembly of claim 1, wherein the coiled ring is disposed within the pocket defined by the first part of the contact housing without deformation of the coiled ring or the coiled ring is disposed within the pocket defined by the first part of the contact housing without asymmetric deformation of the coiled ring.
3. 3. The connector assembly of any one of claims 1 or 2, wherein the second part comprises a second radial sidewall and a second lateral sidewall extending laterally from the second radial sidewall.
4. 4. The connector assembly of claim 3, wherein the first lateral sidewall and the second lateral sidewall are attached to each other by ends thereof or the first lateral sidewall is disposed radially inward from the second lateral sidewall.
5. 5. The connector assembly of any one of claims 3 or 4, wherein the first part further comprises a perimeter sidewall extending laterally from the first lateral sidewall, wherein the perimeter sidewall has a radial thickness that is less than a radial thickness of the first lateral sidewall, wherein at least a portion of the second lateral sidewall is disposed radially inward from the perimeter sidewall.
6. 6. The connector assembly of any one of claims 1 to 5. wherein the first part further comprises a first lateral tab extending laterally from the first lateral sidewall, wherein the perimeter sidewall has a radial thickness that is less than a radial thickness of the first lateral sidewall, wherein at least a portion of the second part is disposed radially inward from the first lateral tab.
7. 7. The connector assembly of any one of claims 1 to 6, wherein the second part is a flat disc having an opening therethrough.
8. 8. The connector assembly of any one of claims 1 to 7. wherein a) the first and second parts define a groove within which at least a portion of the coiled ring is disposed, wherein the groove has at least a portion with a circular, semicircular, elliptical, or oval shape, b) the first and second parts define a groove within which at least a portion of the coiled ring is disposed, wherein the groove has at least a portion with a triangular shape, or c) the first and second parts define a groove within which at least a portion of the coiled ring is disposed, wherein the groove has at least a portion with a square or rectangular shape.
9. 9. A lead assembly, compnsing: a lead or a lead extension having a proximal portion and a distal portion, wherein the proximal portion of the lead or the lead extension comprises a plurality of terminals electrically insulated from one another; and the connector assembly of any one of claims 1 to 8.
10. 10. An electrical stimulating system comprising: the lead assembly of claim 9; and a control module coupled to the lead assembly, the control module comprising a housing, and an electronic subassembly disposed in the housing, wherein connector assembly is part of the control module.
11. 11. An electrical stimulating system comprising: the lead assembly of claim 9; and a lead extension coupleable to the control module and the lead, wherein the connector assembly is part of the lead extension.
12. 12. A coiled ring contact, comprising: a contact housing comprising a first part and a second part attached to the first part, wherein at least the first part comprises a first radial sidewall and a first lateral sidewall extending laterally from the first radial sidewall, the first radial sidewall and the first lateral sidewall defining a pocket; and a coiled ring disposed within the contact housing, wherein the coiled ring contact is configured for disposal of the coiled ring within the pocket defined by the first part of the contact housing and prior to attachment of the second part to the first part, wherein the coiled ring is positioned within the contact housing so that insertion of a proximal part of a lead or lead extension through the coiled ring contact results in contact between the coiled ring and the lead or lead extension.
13. 13. A method of making the coiled ring contact of claim 12. the method comprising: disposing the coiled ring into the pocket defined by the first radial sidewall and the first lateral sidewall of the first part; and attaching the second part to the first part with the coiled ring disposed therebetween.
14. 14. The method of claim 13, wherein the second part comprises a second radial sidewall and a second lateral sidewall extending laterally from the second radial sidewall, wherein attaching the second part to the first part comprises attaching the first lateral sidewall to the second lateral sidewall by ends thereof.
15. 15. The method of claim 13, wherein the second part is a flat disc having an opening therethrough or the second part comprises a second radial sidewall and a second lateral sidewall extending laterally from the second radial sidewall, wherein the first lateral sidewall is disposed radially inward from the second lateral sidewall.

Description

COILED RING CONTACTS FOR ELECTRICAL STIMULATION SYSTEMS AND METHODS OF MAKING AND USING SAME CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application Serial No. 63/538,241, filed September 13, 2024, which is incorporated herein by reference. FIELD The present invention is directed to the area of implantable electrical stimulation systems and methods of making and using the systems. The present invention is also directed to implantable electrical stimulation systems having coil connectors, as well as methods of making and using the coiled ring contacts and electrical stimulation systems. BACKGROUND Implantable electrical stimulation systems have proven therapeutic in a variety of diseases and disorders. For example, spinal cord stimulation systems have been used as a therapeutic modality for the treatment of chronic pain syndromes. Peripheral nerve stimulation has been used to treat chronic pain syndrome and incontinence, with a number of other applications under investigation. Functional electrical stimulation systems have been applied to restore some functionality to paralyzed extremities in spinal cord injury patients. Stimulation of the brain, such as deep brain stimulation, can be used to treat a variety of diseases or disorders. Stimulators have been developed to provide therapy for a variety of treatments. A stimulator can include a control module (with a pulse generator), one or more leads, and an array of stimulator electrodes on each lead. The stimulator electrodes are in contact with or near the nerves, muscles, or other tissue to be stimulated. The pulse generator in the control module generates electrical pulses that are delivered by the electrodes to body tissue. BRIEF SUMMARY At least one aspect is a connector assembly that includes a connector body having an elongated shape with a first end, an opposing second end, and a longitudinal axis, the connector body defining a port at the first end configured to receive a proximal part of a lead or lead extension; and a plurality7 of coiled ring contacts axially spaced-apart within the connector body and collectively forming a lumen that extends from the port along the longitudinal axis of the connector body. Each coiled ring contact includes a contact housing including a first part and a second part attached to the first part, wherein at least the first part includes a first radial sidewall and a first lateral sidewall extending laterally from the first radial sidewall, the first radial sidewall and the first lateral sidewall defining a pocket, and a coiled ring disposed within the contact housing, wherein the coiled ring contact is configured for disposal of the coiled ring within the pocket defined by the first part of the contact housing and prior to attachment of the second part to the first part, wherein the coiled ring is positioned within the contact housing so that insertion of the proximal part of the lead or lead extension through the coiled ring contact results in contact between the coiled ring and the lead or lead extension. In at least some aspects, the coiled ring is disposed within the pocket defined by the first part of the contact housing without deformation of the coiled ring. In at least some aspects, the coiled ring is disposed within the pocket defined by the first part of the contact housing without asymmetric deformation of the coiled ring. In at least some aspects, the second part includes a second radial sidewall and a second lateral sidewall extending laterally from the second radial sidewall. In at least some aspects, the first lateral sidewall and the second lateral sidewall are attached to each other by ends thereof. In at least some aspects, the first lateral sidewall is disposed radially inward from the second lateral sidewall. In at least some aspects, the first part further includes a perimeter sidewall extending laterally from the first lateral sidewall, wherein the perimeter sidewall has a radial thickness that is less than a radial thickness of the first lateral sidewall, wherein at least a portion of the second lateral sidewall is disposed radially inward from the perimeter sidewall. In at least some aspects, the first part further includes a first lateral tab extending laterally from the first lateral sidewall, wherein the perimeter sidewall has a radial thickness that is less than a radial thickness of the first lateral sidewall, wherein at least a portion of the second part is disposed radially inward from the first lateral tab. In at least some aspects, the second part is a flat disc having an opening therethrough. In at least some aspects, the first and second parts define a groove within which at least a portion of the coiled ring is disposed, wherein the groove has at least a portion with a circular, semicircular, elliptical, or oval shape. In at least some aspects, the first and second parts define a groove within whi