EP-4739212-A1 - ELECTROANATOMICAL MAPPING DEVICE WITH INTERNAL ELECTRODE

Abstract

A medical system for creating a communication channel between two anatomical structures includes an outer member having a proximal portion and a distal portion, and a lumen extending from the proximal portion to the distal portion. At least a portion of the lumen includes an electrically conductive surface extending to a distal end of the distal portion. The system includes an inner member having a proximal portion and a distal portion. The inner member is configured to translate within the lumen and to deliver a therapy to target tissue. The inner member distal portion includes a conductive distal tip configured to electrically couple with the electrically conductive surface of the outer member. The inner member includes a proximal portion adapted to electrically couple the conductive distal tip to an auxiliary device.

Inventors

• MATHUR, PRATEEK
• KOON, LAUREN
• Moriyama, Eduardo
• Leung, Charlene
• Leung, Jackie

Assignees

• Boston Scientific Scimed, Inc.

Dates

Publication Date

20260513

Application Date

20240703

Claims (20)

1. 1 . A medical system for creating a channel between two anatomical structures, the system comprising: an outer member having a proximal portion and a distal portion, and a lumen extending from the proximal portion to the distal portion, at least a portion of the lumen having an electrically conductive surface extending to a distal end of the distal portion; an inner member having a proximal portion and a distal portion, the inner member being configured to translate within the lumen and to deliver a therapy to a target tissue; wherein the inner member distal portion includes a conductive distal tip configured to electrically couple with the electrically conductive surface of the outer member and the proximal portion is adapted to electrically couple the conductive distal tip to an auxiliary device.
2. 2. The system of claim 1 , wherein the outer member is a hypotube.
3. 3. The system of claim 1 , wherein the electrically conductive surface includes a coating.
4. 4. The system of any of claims 1 - 3, wherein the electrically conductive surface extends from the outer member proximal portion to the distal end of the distal portion.
5. 5. The system of any of claims 1 - 4, wherein the therapy delivered by the inner member is to puncture the target tissue.
6. 6. The system of any of claims 1 - 5, wherein the outer member includes a layer of insulation surrounding the electrically conductive surface.
7. 7. The system of any of claims 1 - 6, wherein the auxiliary device is an EAM system adapted to identify and display a location of the distal end.
8. 8. The system of any of claims 1 - 7, wherein the outer member distal portion includes a taper.
9. 9. The system of any of claims 1 - 8, wherein the outer member distal portion includes an electrode.
10. 10. The system of claim 9, wherein the electrode is formed by the electrically conductive surface.
11. 11 . The system of claim 9, wherein the electrode is flush with an outer surface of the outer member.
12. 12. The system of any of claims 1 - 11 , wherein the inner member includes a proximal contact configured to electrically couple with the electrically conductive surface.
13. 13. The system of claim 12, wherein the proximal contact includes an enlarged portion.
14. 14. The system of claim 12, wherein the proximal contact includes a retrograde wire.
15. 15. The system of any of claims 1 - 14, wherein the outer member distal portion includes a distal tip, and the electrically conductive surface extends beyond the distal tip.
16. 16. A medical system for creating a channel between two anatomical structures, the system comprising: an outer member having a proximal portion and a tapered distal portion, and a lumen extending from the proximal portion to the tapered distal portion, at least a portion of the lumen having an electrically conductive surface extending to a distal end of the tapered distal portion; an inner member having a proximal portion and a distal portion, the inner member being configured to translate within the lumen and to deliver a therapy to a target tissue; wherein the inner member distal portion includes a conductive distal tip configured to electrically couple with the electrically conductive surface of the outer member and the proximal portion is adapted to electrically couple the conductive distal tip to an auxiliary device.
17. 17. The system of claim 16, wherein the outer member is a hypotube.
18. 18. The system of claim 16, wherein the electrically conductive surface includes a coating.
19. 19. The system of claim 16, wherein the electrically conductive surface extends from the outer member proximal portion to the distal end of the tapered distal portion.
20. 20. The system of claim 16, wherein the therapy delivered by the inner member is to puncture the target tissue.

Description

ELECTROANATOMICAL MAPPING DEVICE WITH INTERNAL ELECTRODE CROSS REFERENCE TO RELATED APPLICATIONS [0001] The present application claims priority to U.S. Provisional Patent Application Serial No. 63/512,405, filed July 7, 2023, the entire disclosure of which is incorporated herein by reference. TECHNICAL FIELD [0002] The present invention relates generally to methods and devices usable within the body of a patient. More specifically, the present invention is concerned with a device having an internal electrode that can be visualized using an Electroanatom ical mapping (EAM) system. BACKGROUND [0003] Electroanatom ical mapping (EAM) is an increasingly prevalent technology useful during in vivo procedures. It enables physicians to identify anatomical regions of the heart and patterns of electrical activation. This is especially useful when treating arrhythmias. Devices that are compatible with EAM systems allow operators to localize them and more easily target specific regions for treatment, allowing for better workflow, better treatment efficacy, and shorter procedure time. [0004] Typically, each EAM device requires a cable to connect to the EAM system. This can result in cumbersome manipulation of the device and a challenging workspace to manage with several cables for the procedure's devices. [0005] Devices can interface with EAM systems with electrodes integrated on the surface of the device. The electrodes enable position tracking of the device on the EAM system via impedance measurements. However, embedded electrodes on the surface of elongated devices introduce transitions. These transitions increase the risk of causing injury when navigating through vasculature. In addition, transitions potentially impede the device’s ability to traverse through tight openings, such as holes created by transseptal puncture or entering through a hemostasis valve. [0006] Additionally, placing an electrode at the distal tip of an elongated device that has a lumen presents additional manufacturing challenges and the risk of exposed edges at the electrode interface is even greater. Ring electrodes on lumen devices typically are placed a few millimeters from the tip to properly secure it and provide a sufficiently smooth material transition. SUMMARY [0007] Example 1 is a medical system for creating a channel between two anatomical structures includes an outer member having a proximal portion and a distal portion, and a lumen extending from the proximal portion to the distal portion. At least a portion of the lumen includes an electrically conductive surface extending to a distal end of the distal portion. The system includes an inner member having a proximal portion and a distal portion. The inner member is configured to translate within the lumen and to deliver a therapy to a target tissue. The inner member distal portion includes a conductive distal tip configured to electrically couple with the electrically conductive surface of the outer member. The inner member includes a proximal portion adapted to electrically couple the conductive distal tip to an auxiliary device. [0008] Example 2 is the system of Example 1 , wherein the outer member is a hypotube. [0009] Example 3 is the system of Example 1 , wherein the electrically conductive surface includes a coating. [0010] Example 4 is the system of any of Examples 1 - 3, wherein the electrically conductive surface extends from the outer member proximal portion to the distal end of the distal portion. [0011] Example 5 is the system of any of Examples 1 - 4, wherein the therapy delivered by the inner member is to puncture the target tissue. [0012] Example 6 is the system of any of Examples 1 - 5, wherein the outer member includes a layer of insulation surrounding the conductive surface. [0013] Example 7 is the system of any of Examples 1 - 6, wherein the auxiliary device is an EAM system adapted to identify and display a location of the distal end. [0014] Example 8 is the system of any of Examples 1 - 7, wherein the outer member distal portion includes a taper. [0015] Example 9 is the system of any of Examples 1 - 8, wherein the outer member distal portion includes an electrode. [0016] Example 10 is the system of Example 9, wherein the electrode is formed by the electrically conductive surface. [0017] Example 11 is the system of Example 9, wherein the electrode is flush with an outer surface of the outer member. [0018] Example 12 is the system of any of Examples 1 - 11 , wherein the inner member includes a proximal contact configured to electrically couple with the electrically conductive surface. [0019] Example 13 is the system of Example 12, wherein the proximal contact includes an enlarged portion. [0020] Example 14 is the system of Example 12, wherein the proximal contact includes a retrograde wire. [0021] Example 15 is the system of any of Examples 1 - 14, wherein the outer member distal portion includes a distal tip, and the electrically conductive surface extends bey