Detachable implantable devices

Patent metadata

Field	Value
Publication number	US-10856877-B2
Application number	US-201615206253-A
Country	US
Kind code	B2
Filing date	Jul 9, 2016
Priority date	Jul 10, 2015
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

Described herein are delivery devices and systems for delivering a detachable medical device and various associated methods of using such devices and systems.

First claim

What is claimed is:

1. A delivery device for delivering a detachable medical device comprising:
(a) a first delivery mechanism comprising (i) a first elongate member having a first elongate member lumen and (ii) an expandable member having an expandable member lumen and a substantially planar continuous edge, the continuous edge having a first lateral width when in a relaxed state, said expandable member being positioned distal to said first elongate member; and
(b) a second delivery mechanism comprising (i) a second elongate member and (ii) an increased diameter member having a proximal facing surf ace, said increased diameter member being positioned distal to and mechanically coupled to said first elongate member;
wherein the second elongate member is at least partially positioned within the first elongate member lumen and the expandable member lumen, wherein the second elongate member is axially moveable relative to the first elongate member lumen and the expandable member lumen, and wherein the increased diameter member is positioned distal to the second elongate member such that when the second elongate member is pulled proximally relative to the first elongate member, the proximal facing surface of the increased diameter member compresses the expandable member by moving at least partially axially into the expandable member lumen such that the expandable member expands to an expanded state wherein the continuous edge has a second lateral width that is greater than the first lateral width.

2. The delivery device of claim 1 , wherein the first elongate member comprises a hollow cylindrical region having a lumen with a substantially circular cross-section.

3. The delivery device of claim 1 , wherein the second elongate member comprises a solid or hollow cylindrical region having a substantially circular cross-section.

4. The delivery device of claim 1 , wherein said first elongate member is mechanically coupled to said expandable member.

5. The delivery device of claim 1 , wherein said second elongate member and said increased diameter member are formed from different materials.

6. The delivery device of claim 1 , wherein said second elongate member and said increased diameter member are formed from the same material and are of a unitary construction.

7. The delivery device of claim 1 , wherein when the expandable member is in an unexpanded state, the increased diameter member has a width that is approximately equal to the first lateral width.

8. The delivery device of claim 1 , wherein the increased diameter member has a substantially circular cross-section.

9. The delivery device of claim 1 , wherein the proximal facing surface of the increased diameter member is a tapered surface.

10. The delivery device of claim 1 , wherein the proximal facing surface of the increased diameter member comprises a partial conic surface.

11. The delivery device of claim 1 , wherein the expandable member comprises a hollow cylindrical portion.

12. A medical delivery system comprising:
a delivery device comprising (a) a first delivery mechanism comprising (i) a first elongate member having a first elongate member lumen and (ii) an expandable member having an expandable member lumen and having a first lateral width when in a relaxed state, said expandable member being positioned distal to said first elongate member and (b) a second delivery mechanism comprising (i) a second elongate member and (ii) an increased diameter member having a proximal facing surface, said increased diameter member being positioned distal to and mechanically coupled to said second elongate member, wherein the second elongate member is at least partially positioned within the first elongate member lumen and the expandable member lumen, wherein the second elongate member is axially moveable relative to the first elongate member lumen and the expandable member lumen, and wherein the increased diameter member is positioned distal to the second elongate member such that when the second elongate member is pulled proximally relative to the first elongate member, the proximal facing surface of the increased diameter member engages a substantially planar continuous edge of the expandable member and expands the expandable member by moving at least partially axially into the expandable member lumen such that the expandable expands to an expanded state having a second lateral width that is greater than the first lateral width; and
an implantable device comprising an engagement region, wherein the expandable member is insertable into the engagement region, wherein the expandable member is slidable within the engagement region when in said relaxed state, and wherein the expandable member is configured to laterally expand to engage a proximal end of the implantable device with the engagement region when in said expanded state.

13. The medical delivery system of claim 12 , wherein the engagement region corresponds to a portion of the implantable device or wherein the engagement region corresponds to a separate engagement portion that is attached to the implantable device.

14. The medical delivery system of claim 12 , wherein the implantable device comprises a vascular occlusion device.

15. The medical delivery system of claim 12 , wherein the engagement region comprises an engagement region lumen having an engagement region lumen width that is greater than the first lateral width and less than or equal to said second lateral width, such that the expandable member is slidable within the engagement region lumen when in said relaxed state and such that the expandable member engages the engagement region lumen when in said expanded state.

16. A method of implanting an implantable device in a subject, the method comprising:
inserting a medical delivery system in accordance with claim 15 into a subject while exerting a pulling force on the second elongate member relative to the first elongate member when the expandable member is positioned within the engagement region such that the delivery device and implantable device are maintained in a coupled state; and
releasing the pulling force, and optionally exerting a pushing force on the second elongate member relative to the first elongate member, such that the expandable member contracts in lateral width, thereby releasing the implantable device in said subject.

17. A delivery device for delivering a detachable medical device comprising:
(a) a first delivery mechanism comprising (i) a first elongate member having a first elongate member lumen and (ii) an expandable member having an expandable member lumen and having a first lateral width when in a relaxed state, said expandable member being positioned distal to said first elongate member; and
(b) a second delivery mechanism comprising (i) a second elongate member and (ii) an increased diameter member having a proximal facing surface, said increased diameter member being positioned distal to and mechanically coupled to said second elongate member;
wherein the second elongate member is at least partially positioned within the first elongate member lumen and the expandable member lumen, wherein the second elongate member is axially moveable relative to the first elongate member lumen and the expandable member lumen, and wherein the increased diameter member is positioned distal to the second elongate member such that when the second elongate member is pulled proximally relative to the first elongate member, the proximal facing surface of the increased diameter member compresses the expandable member by moving at least partially axially into the expandab

Assignees

• Boston Scient Scimed Inc

Inventors

• Smith Mark S
• Anderson James M
• Raab David

Classifications

• A61B2017/12054

  Details concerning the detachment of the occluding device from the introduction device · CPC title

• A61B17/1214

  Coils or wires · CPC title

• A61B17/12113 Primary

  within an aneurysm · CPC title

• A61B2017/12081

  detachable by inflation · CPC title