US5599329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi purpose perfusion cannula
Assignee: Individual
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Filing: 1994-02-23
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Granted: 1997-02-04
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Expires: 2014-02-23
Abstract
Abstract A perfusion cannula for insertion into an artery having a main channel fluidly connected to an intra-aortic portion and in fluid connection with an aortic perfusion line of a cardiopulmonary bypass. The cannula includes a first side port to which an extra-aortic balloon pump may be connected or through which an intra-aortic balloon pump may be inserted. Also, there is a blood pressure port which can be connected to a blood pressure monitoring device without removal of the cannula.
Inventors
- 👤 Shlomo Gabbay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1011; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M1/3659; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/152; A61M60/20; A61M60/295; A61M60/30; A61M60/31; A61M60/40; A61M60/465; A61M60/489; A61M60/495; A61M60/50; A61M60/508; A61M60/515; A61M60/531; A61M60/562; A61M60/80; A61M60/855; A61M60/861; A61M60/865; A61M2210/00; A61M2210/12; A61M2210/127; A61M2230/00; A61M2230/30; A61M60/802; A61M60/833
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
140 words
A perfusion cannula for insertion into an artery, a main channel fluidly connected to an intra-aortic portion of said cannula, said main channel in fluid connection with an aortic perfusion line of a cardiopulmonary bypass, said portion having a proximal end adjacent said main channel and a distal end remote from said main channel, a first side port adapted for fluid connection to a balloon pump at a remote end and in fluid connection with said portion at a near end, a blood pressure port fluidly connected to a blood pressure monitoring tube, said tube being within said portion and extending to a pressure point upstream of said distal end, said tube being adapted for connection to a blood pressure monitoring device and a girdle surrounding a part of said artery, said cannula extending through said girdle into said artery.
Claim 2
Dependent Claim
140 words
A perfusion cannula for insertion into an artery, a main channel fluidly connected to an intra-aortic portion of said cannula, said main channel in fluid connection with an aortic perfusion line of a cardiopulmonary bypass, said portion having a proximal end adjacent said main channel and a distal end remote from said main channel, a first side port adapted for fluid connection to a balloon pump at a remote end and in fluid connection with said portion at a near end, a blood pressure port fluidly connected to a blood pressure monitoring tube, said tube being within said portion and extending to a pressure point upstream of said distal end, said tube being adapted for connection to a blood pressure monitoring device and a girdle surrounding a part of said artery, said cannula extending through said girdle into said artery.
Claim 3
Dependent Claim
25 words
The cannula of claim 1 comprising a locator ring on said cannula surrounding said cannula to indicate proper location of said cannula in said artery.
Claim 4
Dependent Claim
15 words
The cannula of claim 1 wherein said girdle is a substantially rectangular strip of material.
Claim 5
Dependent Claim
20 words
The cannula of claim 1 wherein said girdle has a hole therein for entry of said cannula into said artery.
Claim 6
Dependent Claim
36 words
The cannula of claim 4 wherein said girdle comprises a first layer, a second layer, and a silicone patch therebetween, thereby to seal an opening in said artery caused by withdrawal of a monitoring element therefrom.
Claim 7
Dependent Claim
11 words
The cannula of claim 5 wherein said element monitors blood pressure.
Claim 8
Dependent Claim
14 words
The cannula of claim 1 wherein said pressure point is adjacent said distal end.
Claim 9
Dependent Claim
48 words
The cannula of claim 1 comprising an inflatable occlusive balloon surrounding at least a part of said portion, said first port fluidly connected to said occlusive balloon and adapted for connection to an extra-aortic pump and to a control device for said intra-aortic pump or said extra-aortic pump.
Claim 10
Dependent Claim
15 words
The cannula of claim 8 wherein said girdle is a substantially rectangular strip of material.
Claim 11
Dependent Claim
20 words
The cannula of claim 8 wherein said girdle has a hole therein for entry of said cannula into said artery.
Claim 12
Dependent Claim
36 words
The cannula of claim 10 wherein said girdle comprises a first layer, a second layer, and a silicone patch therebetween, thereby to seal an opening in said artery caused by withdrawal of a monitoring element therefrom.
Claim 13
Dependent Claim
82 words
The cannula of claim 1 wherein said artery comprises an ascending aorta, a descending aorta, and an aortic arch therebetween, a non-occlusive balloon surrounding said portion at or adjacent said distal end and in said descending aorta, said occlusive balloon being adjacent said proximal end, said portion carrying perfused blood extending through said non-occlusive balloon to an exit at or adjacent its distal terminus, whereby said blood passes through said exit in a direction substantially parallel to walls of said descending aorta.
Claim 14
Dependent Claim
44 words
The cannula of claim 1 comprising a plug in said first side port at an end remote from said near end, said plug having a one-way valve therein adapted to prevent flow away from said near end and permit flow toward said near end.
Claim 15
Dependent Claim
16 words
The cannula of claim 13 wherein said valve permits entry of an intra-aortic balloon catheter therethrough.
Claim 16
Dependent Claim
12 words
The cannula of claim 8 wherein said fluid is an aqueous saline.
Claim 17
Dependent Claim
21 words
The cannula of claim 12 wherein said non-occlusive balloon is soft and minimizes dislodgment of calcium deposits from said aortic arch.
Claim 18
Dependent Claim
82 words
A trocar for use with the cannula of claim 1 comprising a hollow flexible tube within said cannula, a flexible guide wire in said tube, a head at an inner end of said trocar, said head ending in a point adapted for insertion into said artery, said head having at least one hole adapted to allow blood and/or air to flow therethrough toward an outer end of said cannula between said wire and said plug, whereby air is removed from said artery.
Claim 19
Dependent Claim
51 words
The method of claim 13 wherein said cannula contains a trocar axially movable therein and having a pointed head, insertion of said head into said artery through said incision, thereby dilating said incision, partially withdrawing said trocar after insertion of said cannula, and fully withdrawing said trocar after clamping said cannula.
Claim 20
Dependent Claim
47 words
The method of claim 13 comprising placing a girdle around said artery before said introduction, said girdle having a pair of relatively narrow elongated fastening ties, one at either end of said girdle, wrapping said girdle around said artery and tying said ties to secure said girdle.
Claim 21
Dependent Claim
31 words
The method of claim 19 wherein said girdle is provided with a hole for admission of said cannula, stitching said girdle to said aorta adjacent said hole before inserting said cannula.
Claim 22
Independent Claim
160 words
A method of introduction of a cannula into an aortic artery, said cannula comprising a main channel fluidly connected to an intra-aortic portion of said cannula, said main channel in fluid connection with an aortic perfusion line of a cardiopulmonary bypass, said portion having a proximal end adjacent said main channel and a distal end remote from said main channel, a first side port adapted for fluid connection to a balloon pump at a remote end and in fluid connection with said portion at a near end, a blood pressure port fluidly connected to a blood pressure monitoring tube, said tube being within said portion and extending to a pressure point upstream of said distal end, said tube being adapted for connection to a blood pressure monitoring device, said method comprising making an incision in a wall of said artery, inserting said cannula through said incision into said artery, clamping said cannula to prevent blood loss, and inflating said cannula.
Claim 23
Independent Claim
160 words
A method of introduction of a cannula into an aortic artery, said cannula comprising a main channel fluidly connected to an intra-aortic portion of said cannula, said main channel in fluid connection with an aortic perfusion line of a cardiopulmonary bypass, said portion having a proximal end adjacent said main channel and a distal end remote from said main channel, a first side port adapted for fluid connection to a balloon pump at a remote end and in fluid connection with said portion at a near end, a blood pressure port fluidly connected to a blood pressure monitoring tube, said tube being within said portion and extending to a pressure point upstream of said distal end, said tube being adapted for connection to a blood pressure monitoring device, said method comprising making an incision in a wall of said artery, inserting said cannula through said incision into said artery, clamping said cannula to prevent blood loss, and inflating said cannula.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |