Lead structure for applying electrical stimulation to body organ, and electrode system using same

Patent metadata

Field	Value
Publication number	US-2023173258-A1
Application number	US-202117921958-A
Country	US
Kind code	A1
Filing date	Mar 30, 2021
Priority date	Apr 28, 2020
Publication date	Jun 8, 2023
Grant date	—

Abstract

A lead structure includes a lead having an electrode wire having one end provided as an insertion portion to be inserted into a body and the other end provided as an interface portion for connection with an external device, a first electrode in the insertion portion to transmit electrical stimulation to body organs, a second electrode on the interface portion to receive electrical stimulation applied from outside, and a signal line configured to interconnect the first electrode and the second electrode and transmit the electrical stimulation received by the second electrode to the first electrode; and a lead case configured to surround the lead, and a conductive plate configured to apply electrical stimulation to body organs and a support plate configured to provide electrical stimulation from the first electrode to the conductive plate by contacting the first electrode.

First claim

1 . A lead structure configured to apply electrical stimulation to body organs, the lead structure comprising:
a lead comprising an electrode wire having one end provided as an insertion portion to be inserted into a body and the other end provided as an interface portion for connection with an external device, a first electrode in the insertion portion to transmit electrical stimulation to body organs, a second electrode on the interface portion to receive electrical stimulation applied from outside, and a signal line configured to interconnect the first electrode and the second electrode and transmit the electrical stimulation received by the second electrode to the first electrode; and a lead case configured to surround the lead, wherein a key hole penetrating from an inside to an outer surface is formed in a longitudinal direction at a position of the first electrode in the electrode wire, a slot extending in the longitudinal direction is formed at the position of the first electrode in the lead case, a conductive plate configured to apply electrical stimulation to body organs and a support plate configured to provide electrical stimulation from the first electrode to the conductive plate by contacting the first electrode are provided, wherein the conductive plate and the support plate are provided on an outer surface and an inner surface of the lead case, respectively, and are coupled to each other with a slot therebetween to form a pair, and a plurality of pairs of a conductive plate and a support plate are provided and arranged to be movable along the slot.

2 . The lead structure of claim 1 , wherein the conductive plate and the support plate are coupled by an elastic connecting member passing through the slot and movably arranged in the lead case.

3 . The lead structure of claim 2 , wherein the support plate is formed with a through hole into which a tip of a plate key for moving the support plate is inserted.

4 . A lead structure configured to apply electrical stimulation to body organs, the lead structure comprising:
a lead comprising an electrode wire having one end provided as an insertion portion to be inserted into a body and the other end provided as an interface portion for connection with an external device, a first electrode in the insertion portion to transmit electrical stimulation to body organs, a second electrode on the interface portion to receive electrical stimulation applied from outside, and a signal line configured to interconnect the first electrode and the second electrode and transmit the electrical stimulation received by the second electrode to the first electrode; and a lead case configured to surround the lead, wherein, in the electrode wire, a plurality of slots extending in a circumferential direction on an opposite side of the circumferential direction with respect to the first electrode are formed to be apart from each other in a longitudinal direction, a plurality of ring-shaped conductive plates are provided at a position of the lead case corresponding to the first electrode, and each of the conductive plates is rotated in a circumferential direction by a key inserted through the slot and is selectively electrically connected to the first electrode.

5 . The lead structure of claim 4 , wherein a contact point capable of contacting the first electrode is formed at a certain position in the circumferential direction on an inner surface of the conductive plate of the lead case, and the conductive plate rotates so that the contact point come into contact with the first electrode, thereby electrically connecting the conductive plate and the first electrode.

6 . The lead structure of claim 4 , wherein a groove is formed on an inner surface of the conductive plate of the lead case, a tip of a plate key for rotating the conductive plate is inserted into the groove, and the plate key rotates to rotate the conductive plate.

7 . A lead structure configured to apply electrical stimulation to body organs, the lead structure comprising:
a lead comprising an electrode wire having one end provided as an insertion portion to be inserted into a body and the other end provided as an interface portion for connection with an external device, a first electrode in the insertion portion to transmit electrical stimulation to body organs, a second electrode on the interface portion to receive electrical stimulation applied from outside, and a signal line configured to interconnect the first electrode and the second electrode and transmit the electrical stimulation received by the second electrode to the first electrode; and a lead case configured to surround the lead, wherein the first electrode extends in a longitudinal direction of the electrode wire, a plurality of first electrodes are arranged to be apart from each other in a circumferential direction, a plurality of slots extending in the circumferential direction and apart from each other in the longitudinal direction are formed in the electrode wire on an opposite side of the circumferential direction with respect to the first electrodes, a plurality of ring-shaped conductive plates are provided at a position of the lead case corresponding to the second electrode, and each conductive plate is rotated in the circumferential direction by a key inserted through a slot to be selectively electrically connected to any one of the first electrodes.

8 . The lead structure of claim 7 , wherein a contact point capable of contacting the first electrode is formed at a certain position in the circumferential direction on an inner surface of the conductive plate of the lead case, and the conductive plate rotates so that the contact point come into contact with any one of the first electrodes, thereby electrically connecting the conductive plate and the first electrode.

9 . The lead structure of claim 7 , wherein a groove is formed on an inner surface of the conductive plate of the lead case, a tip of a plate key for rotating the conductive plate is inserted into the groove, and the plate key rotates to rotate the conductive plate.

10 . A lead system implanted in a body to apply electrical stimulation to body organs, the lead system comprising:
a main processor connected to an external device for communication and control; one or more lead structures according to claim 1 ; an electrode clamp for electrical connection with the lead; and a controller for controlling a position of transmitting electrical stimulation in the lead.

11 . The lead system of claim 10 , wherein the controller comprises a key capable of movement in a longitudinal direction of an electrode wire and rotational movement in a circumferential direction, and the key is inserted into a hollow of the electrode wire to move or rotate a conductive plate along a slot.

Assignees

• Samsung Life Public Welfare Foundation

Inventors

• Park Eun Kyoung
• Kim Tae Kyung
• Kim Tae Woo
• Choi Dong Il
• Lee Kyu Sung

Classifications

• A61N1/0539

  Anchoring of brain electrode systems, e.g. within burr hole · CPC title

• A61N1/36128

  Control systems · CPC title

• A61N1/0534 Primary

  Electrodes for deep brain stimulation · CPC title

• A61N1/36067

  Movement disorders, e.g. tremor or Parkinson disease (stimulating motor muscle A61N1/36003) · CPC title

• A61N1/36125

  Details of circuitry or electric components · CPC title