Delivery of embolic braid

Patent metadata

Field	Value
Publication number	US-12150650-B2
Application number	US-202318110576-A
Country	US
Kind code	B2
Filing date	Feb 16, 2023
Priority date	Aug 8, 2018
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A method for constructing a braided implant delivery system and treating an aneurysm can include attaching a braided implant having a band attached thereto to a delivery tube, positioning the braided implant within the aneurysm, and releasing the band from the delivery tube, thereby releasing the braided implant. The band can include movable extensions that can press into an outer surface of the delivery tube to secure the band to the delivery tube then move away from the outer surface of the delivery tube to release the band. A pull wire can be engaged to the band to secure the band to the delivery tube then be pulled proximally to release the band from the delivery tube. At least a portion of the braid of the braided implant can be positioned within a lumen of the delivery tube.

First claim

The invention claimed is:

1. A method comprising:
providing a braided implant delivery system, wherein the braided implant delivery system comprises:
a delivery tube;
a bending member located near a distal end of the delivery tube, the bending member having a bent configuration and a straight configuration; and
a braided implant comprising a band affixed thereto; engaging the bending member to the band such that the bending member engages a distal surface of the band in the bent configuration and disengages the distal surface of the band in the straight configuration;

positioning the delivery tube through a lumen of the band;
positioning the braided implant in an implanted position at an aneurysm treatment site;
proximally moving the bending member to the straight configuration to disengage the bending member from the distal surface of the band;
moving the delivery tube from the lumen of the band; and
releasing the band from the delivery tube which releases the braided implant from the delivery tube and into the aneurysm treatment site.

2. The method of claim 1 , wherein the step of releasing the band further comprises the step of moving a spring member affixed to the band from an engaged configuration engaging an outer surface of the delivery tube to a released configuration extending away from the outer surface of the delivery tube.

3. The method of claim 1 , further comprising:
moving a spring member affixed to the band to at least partially occlude the lumen of the band.

4. The method of claim 1 , wherein the step of positioning the braided implant in the implanted position further comprises forming an occlusive sack by inverting a portion of the braided implant.

5. The method of claim 1 , wherein the bending member is an extending portion of a pull wire, the extending portion extending distally from an elongated portion of the pull wire, and
wherein proximal movement of the elongated portion of the pull wire moves the extending portion of the pull wire from the bent configuration to the straight configuration.

6. The method of claim 1 , further comprising:
fastening the bending member to the delivery tube with an adhesive,
wherein the step of moving the bending member further comprises the step of breaking the adhesive.

7. A method of constructing a braided implant delivery system, the method comprising:
affixing a braided implant to a band, wherein the band comprises movable extensions extending therefrom;
positioning a delivery tube through a lumen of the band such that the movable extensions press into an outer surface of a distal end of the delivery tube thereby inhibiting movement of the band in relation to the delivery tube; and
positioning at least a portion of the braided implant within a lumen of the delivery tube.

8. The method of claim 7 , further comprising:
constructing the movable extensions to comprise a shape memory material such that the movable extensions are in a deformed shape when pressing into the outer surface of the distal end of the delivery tube and move to a predetermined shape, upon a change in temperature, that causes the movable extensions to release the outer surface of the distal end of the delivery tube.

9. The method of claim 7 , wherein the band comprises additional movable extensions, the method further comprising:
constructing the additional movable extensions to comprise a shape memory material such that the movable extensions move from a deformed shape disengaged from the outer surface of the delivery tube to a predetermined shape, upon a change in temperature, that causes the additional movable extensions to occlude at least a portion of the lumen of the band.

10. The method of claim 7 , further comprising:
engaging a bending member to the band to further inhibit movement of the band in relation to the delivery tube such that the bending member is configured to disengage from the band upon proximal movement of the bending member in relation to the delivery tube.

11. The method of claim 10 , wherein the bending member is an extending portion of a pull wire, the extending portion extending distally from an elongated portion of the pull wire, and
wherein the pull wire is positioned within a channel of the delivery tube.

12. The method of claim 7 , further comprising:
positioning a first portion of the braided implant over the outer surface of the delivery tube and a second portion of the braided implant within the lumen of the delivery tube.

13. The method of claim 12 , further comprising:
inverting the first portion of the braided implant in relation to the second portion of the braided implant.

14. A method of constructing a braided implant delivery system, the method comprising:
affixing a braided implant to a band;
positioning a delivery tube through a lumen of the band;
engaging a bending member to the band to inhibit movement of the band in relation to the delivery tube such that the bending member is configured to disengage from the band upon proximal movement of the bending member in relation to the delivery tube; and
positioning at least a portion of the braided implant within a lumen of the delivery tube.

15. The method of claim 14 , wherein the bending member is an extending portion of a pull wire, the extending portion extending distally from an elongated portion of the pull wire, and
wherein the pull wire is positioned within a channel of the delivery tube.

16. The method of claim 14 , further comprising:
constructing the band to comprise movable extensions extending therefrom, the movable extensions comprising a shape memory material such that the movable extensions are movable from a deformed shape to a predetermined shape upon a change in temperature to the movable extensions.

17. The method of claim 16 , further comprising:
positioning the movable extensions in the deformed shape over an outer surface of the delivery tube such that the movable extensions press into the outer surface of the delivery tube thereby further inhibiting movement of the band in relation to the delivery tube; and
forming the predetermined shape such that upon movement of the movable extensions from the deformed shape to the predetermined shape the movable extensions release the outer surface of the delivery tube.

18. The method of claim 16 , further comprising:
positioning the movable extensions in the deformed shape over an outer surface of the delivery tube and disengaged from the outer surface of the delivery tube; and
forming the predetermined shape such when the delivery tube is removed from the lumen of the band and upon movement of the movable extensions from the deformed shape to the predetermined shape, the movable extensions move to occlude at least a portion of the lumen of the band.

19. The method of claim 14 , further comprising:
positioning a first portion of the braided implant over an outer surface of the delivery tube and a second portion of the braided implant within the lumen of the delivery tube.

Assignees

• Depuy Synthes Products Inc

Inventors

• Gorochow Lacey

Classifications

• A61M2025/0037

  characterized by lumina being arranged side-by-side · CPC title

• A61B2017/12054

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

• A61B2017/00951

  adhesive · CPC title

• A61B2017/00862

  elastic or resilient · CPC title

• A61B17/12113 Primary

  within an aneurysm · CPC title