Medical device having extenable members

Patent metadata

Field	Value
Publication number	US-10799287-B2
Application number	US-201615198666-A
Country	US
Kind code	B2
Filing date	Jun 30, 2016
Priority date	Jul 7, 2015
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

This disclosure provides design, material, manufacturing method, and use alternatives for medical devices. An example medical device includes a scaffold including a central member and a plurality of extension members extending away from the central member. The central member includes a plurality of discrete attachment locations corresponding to each of the plurality of extension members and each of the plurality of extension members is pivotably coupled to the central member at a corresponding discrete attachment location. The medical device also includes a covering substantially surrounding the scaffold and an electrode located at a distal end of each of the plurality of extension members. Each electrode extends through at least a portion of the covering.

First claim

What is claimed is:

1. A medical device, comprising:
a scaffold including a central member and a plurality of extension members extending away from the central member, wherein the central member includes a plurality of discrete attachment locations corresponding to each of the plurality of extension members and wherein each of the plurality of extension members is pivotably coupled to the central member at a corresponding discrete attachment location;
wherein the scaffold is configured to shift between a delivery configuration and an expanded configuration;
a resilient covering substantially surrounding the scaffold, the resilient covering tightly conforming to the scaffold when the scaffold is in both the delivery configuration and the expanded configuration; and
an electrode located at a distal end of each of the plurality of extension members, wherein each electrode extends through at least a portion of the resilient covering, wherein the electrodes are flush with an outer surface of the resilient covering.

2. The medical device of claim 1 , wherein the central member has a longitudinal axis, and wherein the plurality of discrete attachment locations are spaced along the longitudinal axis.

3. The medical device of claim 1 , wherein the scaffold is collapsible.

4. The medical device of claim 3 , wherein when the scaffold is collapsed the distal ends of the plurality of extension members are positioned substantially alongside the central member.

5. The medical device of claim 1 , wherein the scaffold has a first position wherein the plurality of extension members are pivoted in a substantially distal facing direction and wherein the scaffold has a second position wherein the plurality of extension members extend radially from the central member, and wherein the scaffold can shift between the first position and the second position.

6. The medical device of claim 1 , wherein the plurality of extension members are metallic.

7. The medical device of claim 1 , wherein the central member, the plurality of extension members, or both include a wire.

8. The medical device of claim 1 , wherein the resilient covering is a polymer.

9. The medical device of claim 1 , wherein the plurality of extension members includes a first extension member having a first length and a second extension member having a second length and wherein the first length is different than the second length.

10. The medical device of claim 1 , wherein the central member includes a proximal portion, a distal portion and a middle portion located between the proximal and distal portions, wherein each of the proximal, middle and distal portions include at least one extension member attached thereto, and wherein the lengths of the at least one extension member attached to the proximal and distal portions are shorter than the at least one extension member attached to the middle portion.

11. The medical device of claim 1 , wherein the electrodes include a bipolar electrode, a unipolar electrode or both.

12. The medical device of claim 1 , wherein the electrodes are coupled to an energy source.

13. A medical device, comprising:
a conductive assembly having a first collapsed configuration and a second expanded configuration, wherein the conductive assembly is capable of being shifted between the first collapsed configuration and the second expanded configuration;
wherein the conductive assembly includes a central member, a plurality of extension members extending away from the central member, and a covering substantially surrounding the conductive assembly;
wherein the plurality of extension members includes a first extension member having a first end attached to the central member and a free end free from attachment to the central member;
an electrode coupled to the free end of the first extension member; and
wherein the electrode extends through at least a portion of the covering, wherein the electrode is flush with an outer surface of the covering.

14. The medical device of claim 13 , wherein the plurality of extension members are pivotably coupled to the central member.

15. The medical device of claim 13 , wherein the central member includes a plurality of discrete attachment locations corresponding to each of the plurality of extension members and wherein each of the plurality of extension members is coupled to the central member at a corresponding discrete attachment location.

16. The medical device of claim 13 , wherein the plurality of extension members are metallic.

17. The medical device of claim 13 , wherein the covering is a polymer.

18. A medical device, comprising:
a scaffold including a central member and a plurality of extension members extending away from the central member, wherein the central member includes a plurality of discrete attachment locations corresponding to each of the plurality of extension members and wherein each of the plurality of extension members is pivotably coupled to the central member at a corresponding discrete attachment location;
wherein the plurality of extension members includes a first extension member having a first length and a second extension member disposed distally of the first extension member and having a second length that is shorter than the first length;
a covering substantially surrounding the scaffold; and
an electrode located at a distal end of each of the plurality of extension members, wherein each electrode extends through at least a portion of the covering, wherein the electrodes are flush with an outer surface of the covering.

Assignees

• Boston Scient Scimed Inc

Inventors

• Kerr Shawn
• Hingston John A
• Jarobski Tara A
• Storbeck Gene T
• Pearlman Allison M

Classifications

• A61B2018/00214

  Expandable means emitting energy, e.g. by elements carried thereon · CPC title

• A61B2018/00267

  having a basket shaped structure · CPC title

• A61B2018/0016

  Energy applicators arranged in a two- or three dimensional array · CPC title

• A61B18/1492 Primary

  having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence) · CPC title