# US 2019/0314033 A1 · Occlusive implants with fiber-based release structures

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- Number: US 2019/0314033 A1
- Document ID: US20190314033A1
- Status: Published application
- Kind: A1
- Application number: 16/289,163
- Filed: 2019-02-28
- Published: 2019-10-17
- Earliest claimed: 2016-09-16
- Assignees: Endoshape, Inc.
- Applicants: Endoshape, Inc.
- Inventors: Greg Mirigian; Brad Homann; Richard Briganti; Troy Chapman; Dean Carpenter; Steven Choi; Jessi Watson; Charles Barkenbus; Daniel Ashurst; David Willenbrink
- Web page: https://patentgrep.com/patent/US20190314033A1

## CPC

- A61B 17/12113: {within an aneurysm}
- A61B 17/12031: {complete occlusion}
- A61B 17/12109: {in a blood vessel}
- A61B 17/12145: {having a pre-set deployed three-dimensional shape (methods of manufacturing A61B2017/00526)}
- A61B 17/1215: {comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated}
- A61M 39/00: Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use (for respiratory devices, e.g. tracheal tubes, A61M16/00; artificial heart valves A61F2/24)
- A61B 17/12154: {having stretch limiting means}
- A61B 2017/12054: {Details concerning the detachment of the occluding device from the introduction device}
- A61F 2230/0091: helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
- A61M 25/0905: {extendable, e.g. mechanisms for extension}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

Occlusive implants are provided with various embodiments of active and/or passive release structures. Systems for delivering the occlusive implants as well as methods for making and delivering the implants are also provided.

## Claims

### Claim 1

A medical system, comprising:
an occlusive implant having a distal end and a proximal end, the occlusive implant comprising a flexible body with a covering that comprises a plurality of fibers in the form of a braid, wherein at least one fiber of the plurality of fibers extends from the covering in the form of a loop at the proximal end of the occlusive implant;
an elongate tubular member having an inner lumen; and
an elongate pusher member slidable within the inner lumen and having a distal end region with a recess adapted to releasably hold the at least one fiber in the form of the loop.

### Claim 2 (depends on 1)

The medical system of claim 1, wherein the occlusive implant comprises a proximal hub, the at least one fiber in the form of the loop extending proximally from the proximal hub.

### Claim 3 (depends on 2)

The medical system of claim 2, wherein the pusher member is a tubular member with a sidewall and an inner lumen, the recess being an opening in the sidewall providing access to the inner lumen, wherein the medical system further comprises an elongate control wire positionable within the inner lumen of the pusher member both distally and proximally of the recess such that the at least one fiber in the form of the loop is releasably secured within the recess by the control wire.

### Claim 4 (depends on 1)

The medical system of claim 1, wherein the loop is a first loop and wherein at least one fiber of the plurality of fibers extends from the covering in the form of a second loop at the distal end of the occlusive implant.

### Claim 5 (depends on 4)

The medical system of claim 4, wherein the occlusive implant is a first occlusive implant, the medical system comprising a second occlusive implant having a distal end and a proximal end, the second occlusive implant comprising a flexible body with a covering that comprises a plurality of fibers in the form of a braid, wherein at least one fiber of the plurality of fibers extends from the covering in the form of a first loop at the proximal end of the second occlusive implant.

### Claim at position 6

6-8. (canceled)

### Claim 9 (depends on 1)

The medical system of claim 1, wherein the body of the occlusive implant is adapted to transition from an elongate shape to a secondary shape in the form of a coil.

### Claim at position 8

10-11. (canceled)

### Claim 12 (depends on 2)

The medical system of claim 2, wherein the pusher member is a tubular member with a sidewall and an inner lumen, the recess being an opening in the sidewall providing access to the inner lumen, wherein the medical system further comprises an elongate control wire.

### Claim 13 (depends on 12)

The medical system of claim 12, wherein the elongate control wire extends distally within the inner lumen of the pusher member from a proximal location of the pusher member and exits the pusher member through the recess.

### Claim 14 (depends on 13)

The medical system of claim 13, wherein the loop extends into an open end of the pusher member and around the elongate control wire.

### Claim 15 (depends on 14)

The medical system of claim 14, wherein the elongate control wire extends distally alongside the occlusive implant and is releasably secured to the distal end of the occlusive implant.

### Claim 16

(canceled)

### Claim 17

A method of delivering an occlusive implant, comprising:
positioning an open distal end of an elongate tubular member in proximity to a target delivery site, wherein a pusher member is releasably secured to an occlusive implant within an inner lumen of the elongate tubular member;
advancing the pusher member distally to push the occlusive implant from within the inner lumen, the occlusive implant having a distal end and a proximal end, the occlusive implant comprising a flexible body with a covering that comprises a plurality of fibers in the form of a braid, wherein at least one fiber of the plurality of fibers extends from the covering in the form of a loop at the proximal end of the occlusive implant; and
withdrawing an elongate control wire proximally such that the occlusive implant is released from the pusher member after a distal terminus of the elongate control wire is withdrawn through the loop.

### Claim 18 (depends on 17)

The method of claim 17, wherein the occlusive implant is a first occlusive implant, and upon positioning an open distal end of an elongate tubular member in proximity to a target delivery site, the first occlusive implant is releasably secured to a second occlusive implant located distal to the first occlusive implant within the inner lumen of the elongate tubular member.

### Claim 19 (depends on 18)

The method of claim 18, wherein the loop is a first loop and wherein at least one fiber of the plurality of fibers extends from the covering in the form of a second loop at the distal end of the first occlusive implant.

### Claim at position 17

20-23. (canceled)

### Claim 24

A medical system, comprising:
an occlusive implant having a distal end and a proximal end, the occlusive implant comprising a flexible body with a covering that comprises a plurality of fibers in the form of a braid, wherein at least one fiber of the plurality of fibers extends proximally from the covering, the at least one fiber comprising a ball;
an elongate tubular member having an inner lumen; and
an elongate pusher member slidable within the inner lumen and having a distal end region with a recess adapted to releasably hold the ball when the ball and the recess are constrained within the inner lumen.

### Claim 25 (depends on 24)

The medical system of claim 24, wherein the ball is in the form of a knot.

### Claim 26 (depends on 25)

The medical system of claim 25, wherein the knot is self-cinching.

### Claim 27

(canceled)

### Claim 28 (depends on 24)

The medical system of claim 24, wherein the distal end region in a first position distally adjacent to the recess has a width that is relatively less than a width of a second position of the distal end region proximally adjacent to the recess, the first position adapted to accommodate passage of the at least one fiber from the ball to the proximal end of the occlusive implant.

### Claim at position 23

29-50. (canceled)

### Claim 51

A method of delivering an occlusive implant comprising a distal end, a proximal end, and a flexible body with a covering that comprises a plurality of fibers in the form of a braid, wherein at least one fiber of the plurality of fibers extends proximally from the covering and comprises a ball, the method comprising:
positioning an open distal end of an elongate tubular member in proximity to a target delivery site, wherein a distal end region of a pusher member is releasably secured to an occlusive implant within an inner lumen of the elongate tubular member; and
causing relative movement between the pusher member and the elongate tubular member such that the proximal end of the occlusive implant and the distal end region of the pusher member are exposed from within the inner lumen, and the ball releases from within a recess in the distal end region of the pusher member thereby releasing the occlusive implant from the pusher member.

### Claim 52 (depends on 51)

The method of claim 51, wherein the ball is a knot.

### Claim 53 (depends on 51)

The method of claim 51, wherein causing relative movement comprises distally advancing the pusher member with respect to the elongate tubular member and/or proximally retracting the elongate tubular member with respect to the pusher member.

### Claim at position 27

54-59. (canceled)