Patent US7122050B2 successfully refreshed from Google Patents.
US7122050B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery mechanism for implantable stent
Assignee: Bard Peripheral Vascular Inc
•
Filing: 2003-02-04
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Granted: 2006-10-17
•
Expires: 2023-02-04
Abstract
Abstract A delivery mechanism for an implantable stent which provides a high mechanical advantage to the surgeon and convenient operation so as to facilitate smooth withdrawal of an outer catheter sheath following placement of the stent in the desired location within the patient's vessel. Preferred embodiments include a moving rail actuated by a V-shaped lever, a hydraulic actuator, a rack and pinion drive, and a power screw system. The delivery mechanism has a movable member that is attached to the outer catheter sheath so that actuating the mechanism results in an incremental movement of the moveable member, which in turn results in an incremental movement of the outer catheter sheath. Once the outer catheter sheath is retracted from the stent, the stent is deployed into the patient's vessel and the remaining parts of the mechanism, including an inner tube, an atraumatic tip, and a stabilizing element, are easily removed.
Inventors
- 👤 Scott L. Randall
- 👤 Christopher J. Brooks
- 👤 Brendan J. McCrea
- 👤 Donald Van Royen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/966; A61F2/9517
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
137 words
A stent deployment system for introducing a self-expanding stent into a body vessel, comprising: an inner catheter having a proximal end and a distal end, the distal end being attached to a tip, the inner catheter permitting passage of a guidewire therethrough; a reinforcing spring element surrounding the inner catheter for resisting compression and providing flexibility for moving through a body vessel; an abutment element attached to a distal end of the reinforcing spring element for preventing axial movement of the self-expanding stent in a proximal direction, the abutment element having an open end; and an outer catheter having a proximal end and a distal end, the proximal end being attached to a movable member, the distal end surrounding the self-expanding stent, wherein movement of the movable member retracts the outer catheter to release the self-expanding stent.
Claim 2
Dependent Claim
137 words
A stent deployment system for introducing a self-expanding stent into a body vessel, comprising: an inner catheter having a proximal end and a distal end, the distal end being attached to a tip, the inner catheter permitting passage of a guidewire therethrough; a reinforcing spring element surrounding the inner catheter for resisting compression and providing flexibility for moving through a body vessel; an abutment element attached to a distal end of the reinforcing spring element for preventing axial movement of the self-expanding stent in a proximal direction, the abutment element having an open end; and an outer catheter having a proximal end and a distal end, the proximal end being attached to a movable member, the distal end surrounding the self-expanding stent, wherein movement of the movable member retracts the outer catheter to release the self-expanding stent.
Claim 3
Dependent Claim
29 words
The stent deployment system according to claim 1 , wherein the open end of the abutment element is configured to compress an end of the self-expanding stent inserted therein.
Claim 4
Dependent Claim
17 words
The stent deployment system according to claim 1 , wherein the abutment element comprises a plastic material.
Claim 5
Dependent Claim
20 words
The stent deployment system according to claim 3 , wherein the abutment element is molded to the reinforcing spring element.
Claim 6
Dependent Claim
19 words
The stent deployment system according to claim 1 , wherein the abutment element is comprised of a metal material.
Claim 7
Dependent Claim
20 words
The stert deployment system according to claim 5 , wherein the abutment element is welded to the reinforcing spring element.
Claim 8
Dependent Claim
17 words
The stent deployment system according to claim 1 , wherein the tip comprises a rounded distal end.
Claim 9
Dependent Claim
28 words
The stent deployment system according to claim 1 , wherein the tip comprises a first tapered portion from a mid-region of the tip to a distal end thereof.
Claim 10
Dependent Claim
28 words
The stent deployment system according to claim 8 , wherein the tip comprises a second tapered portion from a mid-region of the tip to a proximal end thereof.
Claim 11
Dependent Claim
30 words
The stent deployment system according to claim 8 , wherein the mid-region of the tip has a width that is approximately equal to an inside diameter of the outer catheter.
Claim 12
Dependent Claim
16 words
The stent deployment system according to claim 1 , wherein the tip comprises a radiopaque material.
Claim 13
Dependent Claim
22 words
The stent deployment system according to claim 1 , wherein the tip is formed around a distal end of the inner catheter.
Claim 14
Dependent Claim
32 words
The stent deployment system according to claim 1 , wherein the greatest width of the tip along its length is less than the inside diameter of the stent in a deployed configuration.
Claim 15
Dependent Claim
25 words
The stent deployment system according to claim 1 , wherein the proximal end of the outer catheter is in fluid communication with a flush port.
Claim 16
Dependent Claim
92 words
A stent deployment system, comprising: an inner catheter having a distal end that extends through a tip that is attached thereto; a reinforcing element surrounding the inner catheter along a portion of its length, an abutment element attached to a distal end of the reinforcing element, the abutment element having a concave surface; and an outer catheter having a proximal end attached to a movable member and a distal end covering a stent so that movement of the movable member moves the outer catheter in a proximal direction to uncover the stent.
Claim 17
Dependent Claim
92 words
A stent deployment system, comprising: an inner catheter having a distal end that extends through a tip that is attached thereto; a reinforcing element surrounding the inner catheter along a portion of its length, an abutment element attached to a distal end of the reinforcing element, the abutment element having a concave surface; and an outer catheter having a proximal end attached to a movable member and a distal end covering a stent so that movement of the movable member moves the outer catheter in a proximal direction to uncover the stent.
Claim 18
Dependent Claim
17 words
The stent deployment system according to claim 15 , wherein the tip comprises a rounded distal end.
Claim 19
Dependent Claim
30 words
The stent deployment system according to claim 15 , wherein a mid-region of the tip has a width that is approximately equal to an inside diameter of the outer catheter.
Claim 20
Dependent Claim
16 words
The stent deployment system according to claim 15 , wherein the tip comprises a radiopaque material.
Claim 21
Dependent Claim
32 words
The stent deployment system according to claim 15 , wherein the greatest width of the tip along its length is less than the inside diameter of the stent in a deployed configuration.
Claim 22
Dependent Claim
25 words
The stent deployment system according to claim 15 , wherein the proximal end of the outer catheter is in fluid communication with a flush port.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-10-16 | 2010-04-17 | 2010-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-10-16 | 2014-04-17 | 2014-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-10-16 | 2018-04-17 | 2018-10-17 | $7700.00 | Window Closed / Lapsed |