US5935119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfusion structure
Assignee: United States Surgical Corp
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Filing: 1997-08-06
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Granted: 1999-08-10
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Expires: 2017-08-06
Abstract
Abstract The present disclosure is directed to a perfusion stent and method for implanting the same in a TMR channel for perfusing blood to ischemic areas of the head. The stent includes a head and a stem extending perpendicular to the head. The stem includes a cylinder having a plurality of holes. The method comprises the steps of creating the TMR channel, and implanting the perfusion stent within the TMR channel in order for blood within a ventricle to enter the stem and be perfused to the heart muscle.
Inventors
- 👤 Thomas D. Guy
- 👤 Kenneth E. Toso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/92; A61F2/02; A61F2/24; A61F2/2493; A61F2/94; A61M; A61M37/00; A61B; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B18/00; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2230/00; A61F2230/0063; A61F2230/0073; A61F2230/008; A61M2210/00; A61M2210/12; A61M2210/125
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
152 words
A method for performing transmyocardial revascularization (TMR) comprising the steps of: providing a perfusion stent which includes a cylindrical stem having a proximal end, a distal end and an intermediate portion therebetween defining a stem wall, said intermediate portion having a plurality of holes in fluid communication with an internal cavity bound by the intermediate portion, said intermediate portion defining an outer diameter which is substantially equal to an outer diameter defined by the distal end, said stem wall having a substantially straight profile from the proximal end to the distal end; creating a channel in the heart tissue by advancing a channel creating device into the myocardium to a ventricle; and implanting said perfusion stent in the channel, said internal cavity being in fluid communication with blood flow in the ventricle to deliver blood from the ventricle through the internal cavity and to the heart tissue via said plurality of holes.
Claim 2
Independent Claim
152 words
A method for performing transmyocardial revascularization (TMR) comprising the steps of: providing a perfusion stent which includes a cylindrical stem having a proximal end, a distal end and an intermediate portion therebetween defining a stem wall, said intermediate portion having a plurality of holes in fluid communication with an internal cavity bound by the intermediate portion, said intermediate portion defining an outer diameter which is substantially equal to an outer diameter defined by the distal end, said stem wall having a substantially straight profile from the proximal end to the distal end; creating a channel in the heart tissue by advancing a channel creating device into the myocardium to a ventricle; and implanting said perfusion stent in the channel, said internal cavity being in fluid communication with blood flow in the ventricle to deliver blood from the ventricle through the internal cavity and to the heart tissue via said plurality of holes.
Claim 3
Dependent Claim
41 words
The method according to claim 1, wherein said stem is formed of shape memory alloy and the method includes the step of expanding the stem when said stent is implanted within said channel to secure said stent to the heart tissue.
Claim 4
Dependent Claim
19 words
The method according to claim 1, wherein said step of implanting said stent within said channel is performed manually.
Claim 5
Dependent Claim
32 words
The method according to claim 1, wherein said steps of providing and implanting said stent is performed by a device having an assembly for holding and releasing said stent within said channel.
Claim 6
Dependent Claim
23 words
The method according to claim 1, wherein said step of creating a channel in the heart tissue is performed by laser ablation device.
Claim 7
Dependent Claim
47 words
A perfusion stent comprising: a tubular member having a plurality of holes, said member configured for implantation within a channel to extend from a ventricle into the heart tissue; and a head member removably attached to said tubular member for closing an end of said tubular member.
Claim 8
Dependent Claim
47 words
A perfusion stent comprising: a tubular member having a plurality of holes, said member configured for implantation within a channel to extend from a ventricle into the heart tissue; and a head member removably attached to said tubular member for closing an end of said tubular member.
Claim 9
Dependent Claim
32 words
The perfusion stent according to claim 6, wherein said tubular member includes shape memory alloy which expands when said stent is implanted within channel to secure said stent to the heart tissue.
Claim 10
Dependent Claim
24 words
The perfusion stent according to claim 6, wherein said head member has at least one fastener for securing said stent to the heart wall.
Claim 11
Dependent Claim
13 words
The perfusion stent according to claim 6, wherein said head member is dome-shaped.
Claim 12
Dependent Claim
24 words
The perfusion stent according to claim 7, wherein said tubular member has a diameter of about 0.5 mm to about 3.5 mm when expanded.
Claim 13
Dependent Claim
30 words
The perfusion stent according to claim 6, wherein said head member includes an extension for being press-fitted to said tubular member for attaching said head member to said tubular member.
Claim 14
Dependent Claim
59 words
A perfusion stent comprising: a tubular member having a plurality of holes, said member formed of shape memory alloy which is expandable when said stent is implanted within a channel in heart tissue to secure the stent to the heart tissue; and a head member removably attached to said tubular member for closing an end of said tubular member.
Claim 15
Dependent Claim
59 words
A perfusion stent comprising: a tubular member having a plurality of holes, said member formed of shape memory alloy which is expandable when said stent is implanted within a channel in heart tissue to secure the stent to the heart tissue; and a head member removably attached to said tubular member for closing an end of said tubular member.
Claim 16
Dependent Claim
24 words
The perfusion stent according to claim 12, wherein said tubular member has a diameter of about 0.5 mm to about 3.5 mm when expanded.
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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) | 2002-08-09 | 2003-02-08 | 2003-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-09 | 2007-02-08 | 2007-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-09 | 2011-02-08 | 2011-08-10 | $7700.00 | Window Closed / Lapsed |