# US 8,771,335 B2 · Rapid exchange stent delivery system

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- Number: US 8,771,335 B2
- Document ID: US8771335B2
- Status: Granted
- Kind: B2
- Application number: 12/879,448
- Filed: 2010-09-10
- Published: 2011-03-24
- Granted: 2014-07-08
- Earliest claimed: 2009-09-21
- Assignees: Boston Scientific Scimed, Inc.
- Applicants: John A. Griego; David C. Giusti; Stephen Derosier
- Inventors: John A. Griego; David C. Giusti; Stephen Derosier
- Web page: https://patentgrep.com/patent/US8771335B2

## CPC

- A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F 2/94: Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
- A61F 2/9517: {handle assemblies therefor}
- A61F 2002/041: {Bile ducts}
- A61F 2002/9511: {the retaining means being filaments or wires}
- 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

Medical devices and methods for making and using the same. An example medical device may include an elongate tubular member, an endosurgery stent disposed on the outer surface of the tubular member, a push tube slidably disposed along the outer surface of the tubular member, and a push member slidably disposed in a lumen formed in the tubular member. The push member may be coupled to the push tube.

## Claims

### Claim 1

A stent delivery system, comprising:
an elongate tubular member having an outer surface, a first lumen formed therein, and a second lumen formed therein, the first lumen and the second lumen being independent from each other;
a stent disposed on the outer surface of the tubular member;
a push tube slidably disposed along the outer surface of the tubular member, the push tube being positioned proximal of the stent;
a push member slidably disposed in the first lumen and being coupled to the push tube;
wherein the push tube and the push member are attached by an attachment member; and
wherein the tubular member includes an attachment member slot that allows the attachment member to slide longitudinally along the tubular member.

### Claim 2 (depends on 1)

The stent delivery system of claim 1, wherein the tubular member includes a guidewire port.

### Claim 3 (depends on 2)

The stent delivery system of claim 2, wherein a guidewire ramp is disposed in the first lumen that directs a guidewire between the first lumen and the guidewire port.

### Claim 4 (depends on 2)

The stent delivery system of claim 2, wherein the push tube includes a guidewire port clearance slot that is disposed adjacent to the guidewire port.

### Claim 5 (depends on 1)

The stent delivery system of claim 1, wherein the second lumen comprises an injection lumen.

### Claim 6 (depends on 1)

The stent delivery system of claim 1, wherein the stent includes a polymer.

### Claim 7 (depends on 1)

The stent delivery system of claim 1, wherein the stent delivery system includes one or more suture loops.

### Claim 8 (depends on 1)

The stent delivery system of claim 1, further comprising a suture member that releasably holds the stent on the outer surface of the tubular member.

### Claim 9 (depends on 8)

The stent delivery system of claim 8, wherein the push tube has a suture opening formed therein and wherein the suture member extends through the suture opening.

### Claim 10 (depends on 1)

The stent delivery system of claim 1, wherein the tubular member is capable of being disposed within a channel of an endoscope.

### Claim 11

A stent delivery system for delivering a biliary or pancreatic stent, the system comprising:
an elongate tubular member having a length, an outer surface, a guidewire port, a first lumen formed therein that extends along the length of the tubular member, and a second lumen formed therein that extends along the length of the tubular member and is arranged parallel to the first lumen;
a guidewire ramp disposed in the first lumen adjacent to the guidewire port;
a stent disposed on the outer surface of the tubular member;
a push tube slidably disposed along the outer surface of the tubular member;
a push member slidably disposed in the first lumen and coupled to the push tube;
wherein the push tube and the push member are attached by an attachment member; and
wherein the tubular member includes an attachment member slot that allows the attachment member to slide longitudinally along the tubular member.