Radioactive stents

Patent metadata

Field	Value
Publication number	US-10543379-B2
Application number	US-201615297245-A
Country	US
Kind code	B2
Filing date	Oct 19, 2016
Priority date	Oct 23, 2015
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

This disclosure provides design, material, manufacturing method, and use alternatives for medical devices. An example medical device includes a stent having a first strut. The first strut may include an inner surface and an outer surface. The medical device may also include a first attachment member coupled to the strut and a radioactive element. The radioactive element may be coupled to the attachment member.

First claim

What is claimed is:

1. A medical device, comprising:
a stent having a tubular scaffold including an inner surface and an outer surface and first and second opposing ends;
a plurality of attachment members coupled to the tubular scaffold, at least a first attachment member of the plurality of attachment members being formed from the tubular scaffold by cutting lines through the tubular scaffold and bending a portion of the tubular scaffold adjacent the cut lines to form the first attachment member; and
a radioactive element;
wherein the first attachment member is formed between the first and second ends of the stent and imparts a compressive force upon the radioactive element to couple the radioactive element to the first attachment member.

2. The medical device of claim 1 , wherein the radioactive element further comprises an axially elongated radioactive seed.

3. The medical device of claim 1 , wherein the first attachment member includes a base, and the portion of the tubular scaffold bent adjacent the cut lines includes a first grip member and a second grip member, wherein the first and second grip members extend away from the base member.

4. The medical device of claim 3 , wherein the radioactive element is positioned between the first and second grip members.

5. The medical device of claim 4 , wherein the radioactive element is positioned radially outward from the base member.

6. The medical device of claim 5 , wherein the first and second grip members are configured to compress the radioactive element against the base member.

7. The medical device of the claim 1 , wherein the tubular scaffold comprises a first strut and a second strut longitudinally spaced from the first strut, and wherein the first attachment member is positioned between the first strut and the second strut.

8. The medical device of claim 7 , further comprising a first connector having a first end coupled to the first strut and a second end coupled to the second strut, and wherein the first attachment member is formed from the first connector.

9. The medical device of claim 1 , wherein the radioactive element includes a radioactive strand, and wherein the radioactive strand extends from the first attachment member to the second attachment member.

10. The medical device of claim 1 , further comprising a radioactive shield, wherein the radioactive shield is configured to modulate radioactive energy released from the radioactive element.

11. The medical device of claim 1 , wherein the first attachment member extends radially outward from the outer surface of the tubular scaffold.

12. The medical device of claim 1 , wherein the portion of the tubular scaffold bend adjacent the cut lines is bent inward toward a lumen of the stent.

13. A medical device, comprising:
a stent including a monolithic tubular scaffold having first and second opposing ends, the scaffold including a plurality of integrally formed struts defining one or more interstices therebetween;
a plurality of attachment members coupled to the monolithic tubular scaffold, at least a first attachment member of the plurality of attachment members being formed from the monolithic tubular scaffold by cutting lines through the monolithic tubular scaffold and bending a portion of the monolithic tubular scaffold adjacent the cut lines to form the first attachment member; and
a radioactive element disposed along the attachment member;
wherein the first attachment member is formed between the first and second ends of the stent and imparts a compressive force upon the radioactive element to removably couple the radioactive element to the first attachment member.

14. The medical device of claim 13 , further comprising a second attachment member, and wherein the second attachment member is circumferentially spaced from the first attachment member.

15. The medical device of claim 13 , wherein the radioactive element includes a radioactive seed, a radioactive strand, or both.

16. The medical device of claim 13 , further comprising a radioactive shield, wherein the radioactive shield is configured to modulate radioactive energy released from the radioactive element.

17. The medical device of claim 13 , wherein the first attachment member includes a base, a first grip member and a second grip member, wherein the first and second grip members extend away from the base member.

18. The medical device of claim 17 , wherein the radioactive element is positioned between the first and second grip members.

19. A medical device, comprising:
a stent having a tubular scaffold including an inner surface and an outer surface, the tubular scaffold including first and second struts and a connector extending between the first and second struts;
a plurality of attachment members coupled to the connector, at least a first attachment member of the plurality of attachment members being formed from the connector by cutting lines through the connector and bending a portion of the connector adjacent the cut lines to form the first attachment member, wherein the first attachment member includes a first gripping portion and a second gripping portion extending from a base; and
a radioactive element positioned between the first and second gripping portions, wherein the radioactive element extends radially outward from the base.

20. The medical device of claim 19 , wherein the first gripping portion and the second gripping portion direct a compressive force upon the radioactive element to couple the radioactive element to the base.

Assignees

• Boston Scient Scimed Inc

Inventors

• Hingston John A
• Clerc Claude O
• Ross Daniel

Classifications

• A61F2/82

  Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) · CPC title

• A61N5/1014

  Intracavitary radiation therapy · CPC title

• A61F2210/0095

  radioactive · CPC title

• A61N2005/1008

  Apparatus for temporary insertion of sources, e.g. afterloaders · CPC title

• A61N2005/1005

  with asymmetrical radiation pattern · CPC title