# US 11,026,822 B2 · Stent delivery system

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- Number: US 11,026,822 B2
- Document ID: US11026822B2
- Status: Granted
- Kind: B2
- Application number: 15/473,420
- Filed: 2017-03-29
- Published: 2018-10-04
- Granted: 2021-06-08
- Earliest claimed: 2006-01-13
- Assignees: C. R. Bard, Inc.
- Applicants: C. R. Bard, Inc.
- Inventors: Teodoro S. Jimenez, Jr.; John Fulkerson; Raffaele Mazzei
- Web page: https://patentgrep.com/patent/US11026822B2

## CPC

- A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F 2/9517: {handle assemblies therefor}
- A61F 2002/9665: {with additional retaining means}
- 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

One preferred embodiment includes a stent delivery system including a retractable sheath and an outer stability sheath. The stability sheath freely rotates relative to the retractable sheath, relieving compression forces caused by twisting of stability sheath in when in a tortuous conformation.

## Claims

### Claim 1

A stent delivery system, comprising:
an inner member having a distal end sized and shaped to receive a stent;
a longitudinally slidable outer member disposed over the inner member and the stent;
a handle connected to the outer member, the handle including a retraction mechanism designed to retract the outer member into the handle; and
a stability sheath disposed over the outer member, wherein the stability sheath is rotatable relative to the inner member and the outer member, the stability sheath comprising:
a proximal end coupled to the handle at an internal section of the handle; and
a disk coupled to the proximal end, wherein the disk is disposed in a circular cavity in the handle to permit free rotation of the stability sheath while preventing axial movement of the stability sheath.

### Claim 2 (depends on 1)

The stent delivery system of claim 1, wherein the stability sheath comprises a lengthwise compressible region.

### Claim 3 (depends on 1)

The stent delivery system of claim 1, wherein the retraction mechanism supplies a plurality of retraction ratios.

### Claim 4 (depends on 3)

The stent delivery system of claim 3, wherein the retraction mechanism supplies one-way motion.

### Claim 5 (depends on 4)

The stent delivery system of claim 4, wherein the retraction mechanism comprises one or more of a thumbwheel, a thumb lever, and a pull ring.

### Claim 6 (depends on 4)

The stent delivery system of claim 4, wherein the retraction mechanism comprises a thumbwheel, a thumb lever, and a pull ring.

### Claim 7 (depends on 3)

The stent delivery system of claim 3, wherein the retraction mechanism comprises one or more of a thumbwheel, a thumb lever, and a pull ring.

### Claim 8 (depends on 2)

The stent delivery system of claim 2, wherein the retraction mechanism supplies one-way motion.

### Claim 9 (depends on 8)

The stent delivery system of claim 8, wherein the retraction mechanism comprises one or more of a thumbwheel, a thumb lever, and a pull ring.

### Claim 10 (depends on 8)

The stent delivery system of claim 8, wherein the retraction mechanism comprises a thumbwheel, a thumb lever, and a pull ring.

### Claim 11 (depends on 1)

The stent delivery system of claim 1, further comprising a disk bonded to a proximal portion of the stability sheath, the disk disposed in a circular cavity surrounding the disk.

### Claim 12 (depends on 1)

The stent delivery system of claim 1, further comprising a disk integrally formed with the stability sheath, the disk disposed in a circular cavity surrounding the disk.

### Claim 13 (depends on 1)

The stent delivery system of claim 1, further comprising a strain relief coupled to the handle, the strain relief disposed over the stability sheath.

### Claim 14 (depends on 13)

The stent delivery system of claim 13, wherein the strain relief includes a low friction coating on an inner surface.

### Claim 15 (depends on 14)

The stent delivery system of claim 14, wherein the stability sheath includes a low friction coating on an outer surface.

### Claim 16 (depends on 1)

The stent delivery system of claim 1, wherein the stability sheath comprises a plurality of longitudinally compressible crumple zones.