Multifunctional use of an electrode structure of a balloon catheter system

Patent metadata

Field	Value
Publication number	US-12089954-B2
Application number	US-201917289866-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Nov 22, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A balloon catheter system has a balloon extending in an axial direction and surrounding a balloon interior. The balloon has an outer side facing away from the balloon interior. A catheter is connected to the balloon and extending in the axial direction, the catheter having a lumen in fluid communication with the balloon interior. First and second annular electrodes are disposed on the outer side, each extending in a circumferential direction of the balloon and being located opposite one another in the axial direction. The electrodes are configured to measure one of more of strain of the balloon in the circumferential direction, strain of the balloon in the radial direction, an impedance of tissue of a patient resting against the electrodes, and a redox potential of tissue of the patient contacting at least one of the electrodes.

First claim

The invention claimed is:

1. A balloon catheter system comprising:
a balloon extending in an axial direction and surrounding a balloon interior, the balloon having an outer side facing away from the balloon interior;
a catheter connected to the balloon and extending in the axial direction, the catheter having a lumen in fluid communication with the balloon interior; and
first and a second annular electrodes disposed on the outer side, each extending in a circumferential direction of the balloon and being located opposite one another in the axial direction, wherein the first electrode has an open annular design and the second electrode has a closed annular design, wherein the first electrode comprises first end portions located opposite one another in an axial direction, wherein the first electrode comprises second end portions joined by a joining section that extends in the axial direction, wherein the first end portions are located opposite the joining section in the circumferential direction to define a gap, and wherein the second electrode comprises a protrusion that extends through the gap;
the electrodes being configured to measure one of more of strain of the balloon in the circumferential direction, strain of the balloon in the radial direction, an impedance of tissue of a patient resting against the electrodes, and a redox potential of tissue of the patient contacting at least one of the electrodes.

2. The balloon catheter system according to claim 1 , wherein the first electrode includes a first section and second section extending in the circumferential direction, wherein the second section runs along the first section and is located opposite the first section in the axial direction.

3. The balloon catheter system according to claim 1 , wherein the second end portions and joining section form a first contact region, the protrusion forms a second contact region and one of the first end portions forms a third contact region.

4. The balloon catheter system according to claim 3 , wherein the first, second and third contact regions are connected to first, second and third conductors.

5. A balloon catheter system comprising:
a balloon extending in an axial direction and surrounding a balloon interior, the balloon having an outer side facing away from the balloon interior;
a catheter connected to the balloon and extending in the axial direction, the catheter having a lumen in fluid communication with the balloon interior; and
first and a second annular electrodes disposed on the outer side, each extending in a circumferential direction of the balloon and being located opposite one another in the axial direction;
the electrodes being configured to measure one of more of strain of the balloon in the circumferential direction, strain of the balloon in the radial direction, an impedance of tissue of a patient resting against the electrodes, and a redox potential of tissue of the patient contacting at least one of the electrodes, wherein the first electrode includes a first section and second section extending in the circumferential direction, wherein the second section runs along the first section and is located opposite the first section in the axial direction, wherein the first section has a first end section and a second end section, and the second section has a first end section and a second end section, the first and second end sections of the first electrode being joined to one another by a joining section that extends in the axial direction.

6. The balloon catheter system according to claim 5 , wherein the first section of the first electrode is covered by electrical insulation.

7. The balloon catheter system according to claim 6 , wherein the first end section of the first section of the first electrode and the first end section of the second section of the first electrode are located opposite one another in the axial direction.

8. The balloon catheter system according to claim 7 , wherein the first end section of the first section of the first electrode and the first end section of the second section of the first electrode are located opposite the joining section in the circumferential direction such that a gap is formed between the two first end sections and the joining section.

9. The balloon catheter system according to claim 8 , wherein the second electrode includes a protrusion that projects from an annular region of the second electrode in the axial direction and extends in the axial direction into the gap, such that the protrusion is disposed in the circumferential direction between the joining section and the two first end sections of the first electrode.

10. A balloon catheter system according to claim 9 , wherein the second end section of the first section of the first electrode forms a first contact region of the first electrode that is conductively connected to a first conductor.

11. A balloon catheter system according to claim 10 , wherein the protrusion forms a contact region of the second electrode that is conductively connected to a second conductor.

12. A balloon catheter system according to claim 11 , wherein the first end section of the first section of the first electrode forms a second contact region of the first electrode that is conductively connected to a third conductor.

13. The balloon catheter system according to claim 12 , wherein the balloon catheter system is configured to measure the impedance through a voltage on the second contact region.

14. A balloon catheter system according to claim 13 , wherein the balloon catheter system is configured to measure the redox potential through a voltage on the contact region of the second electrode.

15. A balloon catheter system according to claim 13 , comprising a stent crimped onto the outer side of the balloon, the stent being expandable by expansion of the balloon.

16. The balloon catheter system according to claim 15 , wherein the stent is spaced apart from the two electrodes in the axial direction.

17. A method using a balloon catheter system comprising a balloon catheter system comprising:
a balloon extending in an axial direction and surrounding a balloon interior, the balloon having an outer side facing away from the balloon interior;
a catheter connected to the balloon and extending in the axial direction, the catheter having a lumen in fluid communication with the balloon interior; and
first and a second annular electrodes disposed on the outer side, each extending in a circumferential direction of the balloon and being located opposite one another in the axial direction;
the electrodes being configured to measure one of more of strain of the balloon in the circumferential direction, strain of the balloon in the radial direction, an impedance of tissue of a patient resting against the electrodes, and a redox potential of tissue of the patient contacting at least one of the electrodes wherein the method comprises measuring strain of the balloon in the circumferential direction of the balloon or in the radial direction of the balloon with the first electrode, measuring impedance with the first and second electrodes, and measuring redox potential with the second electrode.

Assignees

• Biotronik Ag

Inventors

• Quint Bodo

Classifications

• A61B5/6886

  Monitoring or controlling distance between sensor and tissue · CPC title

• A61M2205/3344

  Measuring or controlling pressure at the body treatment site · CPC title

• A61M2205/332

  Force measuring means · CPC title

• A61M2205/3317

  Electromagnetic, inductive or dielectric measuring means · CPC title

• A61M25/10184

  Means for controlling or monitoring inflation or deflation · CPC title