# US 8,540,759 B2 · Stent delivery catheter with rapid exchange capabilities

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- Number: US 8,540,759 B2
- Document ID: US8540759B2
- Status: Granted
- Kind: B2
- Application number: 13/277,730
- Filed: 2011-10-20
- Published: 2012-04-26
- Granted: 2013-09-24
- Earliest claimed: 2010-10-20
- Assignees: Stryker Corporation; Stryker NV Operations Limited
- Applicants: Stephen C. Porter
- Inventors: Stephen C. Porter
- Web page: https://patentgrep.com/patent/US8540759B2

## CPC

- A61M 25/09041: {Mechanisms for insertion of guide wires}
- A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61M 25/01: Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence)
- A61F 2002/9665: {with additional retaining means}
- A61F 2250/0098: radio-opaque, e.g. radio-opaque markers
- A61M 25/0052: {Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port}
- A61M 25/0054: {with regions for increasing flexibility}
- A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable}
- A61M 25/0172: {Exchanging a guidewire while keeping the catheter in place}
- A61M 2025/0042: {Microcatheters, cannula or the like having outside diameters around 1 mm or less}
- A61M 2025/0059: {having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking}
- A61M 2025/0183: {Rapid exchange or monorail catheters}
- 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

A stent delivery system having rapid exchange capabilities for delivering a self-expandable stent. The system includes a delivery catheter and a sheath positionable in the lumen of the delivery catheter. The delivery catheter includes an elongate shaft extending distally from a hub assembly. The elongate shaft includes a lumen extending therethrough and a guidewire port providing access to the lumen at a location intermediate the proximal and distal ends of the elongate shaft. The sheath is positionable in the lumen of the delivery catheter such that the sheath extends across the guidewire port to close off the guidewire port to allow a stent to be passed through the sheath from proximal of the guidewire port to distal of the guidewire port.

## Claims

### Claim 1

A stent delivery system, comprising:
a delivery catheter, comprising
an elongate shaft extending distally from a hub assembly, the elongate shaft defining a lumen extending therethrough from a proximal end of the elongate shaft to a distal end of the elongate shaft, the elongate shaft further defining a guidewire port in a sidewall thereof, the guidewire port providing access to the lumen at a location between the proximal and distal ends of the elongate shaft, and
an inwardly deflectable member extending across the guidewire port, the deflectable member configured to close the guidewire port when a guidewire is not extending therethrough, so as to allow a stent to be passed through the shaft lumen without interference from the guidewire port; and
a stent introducer sheath slidably disposed in the lumen of the elongate delivery catheter shaft.

### Claim 2 (depends on 1)

The stent delivery system of claim 1, further comprising:
a guidewire configured to extend through the guidewire port and down the lumen of the elongate shaft distal of the guidewire port; and
a delivery wire having a stent disposed on a distal portion thereof, the delivery wire configured to be passed through the introducer sheath from proximal of the guidewire port to distal of the guidewire port into the lumen of the elongate shaft.

### Claim 3 (depends on 1)

The stent delivery system of claim 1, wherein a proximal end of the introducer sheath is located proximal of the hub assembly of the delivery catheter, and wherein a distal end of the introducer sheath is located distal of the guidewire port.

### Claim 4 (depends on 3)

The stent delivery system of claim 3, the introducer sheath comprising a introducer sheath hub assembly disposed on the proximal end thereof, wherein the introducer sheath hub assembly is configured to engage with the hub assembly of the delivery catheter.

### Claim 5 (depends on 1)

The stent delivery system of claim 1, wherein the inwardly deflectable member is collapsible away from the guidewire port to open the guidewire port to the lumen in order to allow a guidewire to be passed through the guidewire port.

### Claim 6 (depends on 1)

The stent delivery system of claim 1, wherein the delivery catheter includes a single lumen for receiving either:
a) a guidewire extending through the guidewire port, the single lumen of the elongate shaft, and the distal end of the elongate shaft, and external of the elongate shaft proximal of the guidewire port; or
b) a delivery wire having a stent disposed on a distal portion thereof, the delivery wire extending through a proximal end of the elongate shaft, the single lumen of the elongate shaft, and a distal end of the elongate shaft.

### Claim 7 (depends on 1)

The stent delivery system of claim 1, wherein the inwardly deflectable member is a sheath disposed concentrically within the elongate shaft, wherein an outer surface of the inwardly deflectable member is disposed adjacent an inner surface of the elongate shaft.

### Claim 8

A stent delivery system having rapid exchange capabilities, the stent delivery system comprising:
a delivery catheter, comprising
an elongate shaft extending distally from a hub assembly, the elongate shaft defining a lumen extending therethrough from a proximal end of the elongate shaft to a distal end of the elongate shaft, the elongate shaft further defining a guidewire port extending through a sidewall thereof at a location between the proximal and distal ends of the elongate shaft, wherein the guidewire port is configured to provide access to the lumen for advancement of the delivery catheter over a guidewire extending through the lumen between the guidewire port and the distal end of the elongate shaft and external of the elongate shaft proximal of the guidewire port, and
an inwardly deflectable member extending across the guidewire port, the deflectable member configured to close the guidewire port when a guidewire is not extending therethrough, so as to allow a stent to be passed through the shaft lumen without interference from the guidewire port; and
a stent introducer sheath slidably disposed in the lumen of the elongate shaft.

### Claim 9 (depends on 8)

The stent delivery system of claim 8, wherein the stent delivery system further comprises:
a guidewire configured to extend through the guidewire port and down the lumen of the elongate shaft distal of the guidewire port; and
a delivery wire having a stent disposed on a distal portion thereof, the delivery wire being configured to be passed through the introducer sheath from proximal of the guidewire port to distal of the guidewire port into the lumen of the elongate shaft.

### Claim 10 (depends on 8)

The stent delivery system of claim 8, wherein the introducer sheath includes a stent disposed therein at a position proximal of the guidewire port.

### Claim 11 (depends on 10)

The stent delivery system of claim 10, wherein the introducer sheath is slidably disposed in the lumen of the elongate shaft of the delivery catheter.

### Claim 12 (depends on 11)

The stent delivery system of claim 11, wherein the introducer sheath includes an introducer sheath hub assembly disposed at least partially proximal of the hub assembly of the delivery catheter.

### Claim 13 (depends on 8)

The stent delivery system of claim 8, wherein the inwardly deflectable member is a sheath disposed concentrically within the elongate shaft, wherein an outer surface of the inwardly deflectable member is disposed adjacent an inner surface of the elongate shaft.

### Claim 14

A stent delivery system, comprising:
a delivery catheter, comprising
an inner sheath defining a lumen, wherein a distal end of the inner sheath is deflectable in a radially inward direction,
an outer tubular member disposed concentrically around the inner sheath, the outer tubular member defining a guidewire port in a sidewall thereof, wherein the guidewire port overlies the distal end of the inner sheath, and
a hub assembly attached to a proximal end of the outer tubular member; and
an introducer sheath slidably disposed in the lumen of the inner sheath,
wherein the distal end of the inner sheath is configured to deflect away from the outer tubular member to enable fluid communication between the guidewire port and the lumen of the inner sheath, and
wherein the distal end of the inner sheath is also configured to deflect toward the guidewire port to close the guidewire port, thereby allowing a stent to be passed through the lumen of the inner sheath without interference from the guidewire port.