US6695864B2
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Method and apparatus for cerebral embolic protection
Assignee: SURGERX MEDICAL LLC
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Filing: 2001-07-03
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Granted: 2004-02-24
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Expires: 2021-07-03
Abstract
Abstract An aortic shunt apparatus and methods for cerebral embolic protection are described for isolating the aortic arch vessels from the aortic lumen, for selectively perfusing the arch vessels with a fluid and for redirecting blood flow within the aortic lumen and any potential embolic materials carried in the blood through a shunt past the isolated arch vessels. The perfusion shunt apparatus may be mounted on a catheter or cannula for percutaneous introduction or for direct insertion into the aorta. The perfusion shunt apparatus has application for protecting a patient from embolic stroke and hypoperfusion during cardiopulmonary bypass or cardiac surgery and also for selectively perfusing the cerebrovascular circulation with oxygenated blood or with neuroprotective fluids in the presence of risk factors, such as head trauma or cardiac insufficiency. The perfusion shunt apparatus will also find application for selective perfusion of other organ systems within the body.
Inventors
- 👤 John A. Macoviak
- 👤 Wilfred J. Samson
- 👤 James J. Leary
- 👤 Brady D. Esch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:55
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1011; A61M1/00; A61M1/36; A61M1/3613; A61M1/3621; A61M1/3653; A61M1/3655; A61M1/3659; A61M25/1002; A61M2025/1043; A61M2025/1052; A61M2025/1097; A61M2210/00; A61M2210/12; A61M2210/127
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
51 words
A method of cerebral embolic protection, comprising: intercepting embolic materials in the blood flow in a patient's ascending aorta with an aortic shunt device placed in the patient's aortic arch; and redirecting the embolic materials from the patient's ascending aorta past the patient's aortic arch vessels to the patient's descending aorta.
Claim 2
Independent Claim
51 words
A method of cerebral embolic protection, comprising: intercepting embolic materials in the blood flow in a patient's ascending aorta with an aortic shunt device placed in the patient's aortic arch; and redirecting the embolic materials from the patient's ascending aorta past the patient's aortic arch vessels to the patient's descending aorta.
Claim 3
Dependent Claim
23 words
The method of claim 1 , further comprising: perfusing the patient's aortic arch vessels with a fluid which is free of embolic materials.
Claim 4
Dependent Claim
23 words
The method of claim 2 , further comprising: perfusing the patient's aortic arch vessels through a perfusion lumen in the aortic shunt device.
Claim 5
Dependent Claim
17 words
The method of claim 3 , wherein: perfusing the patient's aortic arch vessels with hypothermic oxygenated blood.
Claim 6
Dependent Claim
21 words
The method of claim 1 , wherein the aortic shunt device is introduced into the aorta on an elongated catheter shaft.
Claim 7
Dependent Claim
43 words
The method of claim 5 , further comprising perfusing the patient's aortic arch vessels through an arch perfusion lumen in the elongated catheter shaft, the arch perfusion lumen having a fluid connection with an arch perfusion port external to the aortic shunt device.
Claim 8
Dependent Claim
42 words
The method of claim 6 , further comprising perfusing the patient's coronary vessels through a coronary perfusion lumen in the elongated catheter shaft, the coronary perfusion lumen having a fluid connection with a coronary perfusion port upstream of the aortic shunt device.
Claim 9
Dependent Claim
42 words
The method of claim 7 , further comprising perfusing the patient's corporeal vessels through a corporeal perfusion lumen in the elongated catheter shaft, the corporeal perfusion lumen having a fluid connection with a corporeal perfusion port downstream of the aortic shunt device.
Claim 10
Dependent Claim
15 words
The method of claim 1 , further comprising occluding blood flow through the patient's aorta.
Claim 11
Dependent Claim
25 words
The method of claim 1 , wherein the body of the aortic shunt device has an approximately cylindrical configuration with a central blood flow lumen.
Claim 12
Dependent Claim
14 words
The method of claim 10 , further comprising occluding the central blood flow lumen.
Claim 13
Dependent Claim
29 words
The method of claim 10 , further comprising creating a circumferential seal between an upstream end of the aortic shunt device and a wall of the patient's ascending aorta.
Claim 14
Dependent Claim
29 words
The method of claim 12 , further comprising creating a circumferential seal between a downstream end of the aortic shunt device and the wall of the patient's descending aorta.
Claim 15
Dependent Claim
28 words
The method of claim 1 , further comprising creating a seal between an upstream end of the aortic shunt device and a wall of the patient's ascending aorta.
Claim 16
Dependent Claim
28 words
The method of claim 14 , further comprising creating a seal between a downstream end of the aortic shunt device and the wall of the patient's descending aorta.
Claim 17
Independent Claim
56 words
A method of cerebral embolic protection, comprising: intercepting blood flow from a patient's ascending aorta with an aortic shunt device placed in the patient's aortic arch; and redirecting the blood flow from the patient's ascending aorta and any embolic materials contained in the blood flow past the patient's aortic arch vessels to the patient's descending aorta.
Claim 18
Independent Claim
56 words
A method of cerebral embolic protection, comprising: intercepting blood flow from a patient's ascending aorta with an aortic shunt device placed in the patient's aortic arch; and redirecting the blood flow from the patient's ascending aorta and any embolic materials contained in the blood flow past the patient's aortic arch vessels to the patient's descending aorta.
Claim 19
Dependent Claim
23 words
The method of claim 16 , further comprising: perfusing the patient's aortic arch vessels with a fluid which is free of embolic materials.
Claim 20
Dependent Claim
23 words
The method of claim 17 , further comprising: perfusing the patient's aortic arch vessels through a perfusion lumen in the aortic shunt device.
Claim 21
Dependent Claim
17 words
The method of claim 18 , wherein: perfusing the patient's aortic arch vessels with hypothermic oxygenated blood.
Claim 22
Dependent Claim
21 words
The method of claim 16 , wherein the aortic shunt device is introduced into the aorta on an elongated catheter shaft.
Claim 23
Dependent Claim
43 words
The method of claim 20 , further comprising perfusing the patient's aortic arch vessels through an arch perfusion lumen in the elongated catheter shaft, the arch perfusion lumen having a fluid connection with an arch perfusion port external to the aortic shunt device.
Claim 24
Dependent Claim
42 words
The method of claim 21 , further comprising perfusing the patient's coronary vessels through a coronary perfusion lumen in the elongated catheter shaft, the coronary perfusion lumen having a fluid connection with a coronary perfusion port upstream of the aortic shunt device.
Claim 25
Dependent Claim
42 words
The method of claim 22 , further comprising perfusing the patient's corporeal vessels through a corporeal perfusion lumen in the elongated catheter shaft, the corporeal perfusion lumen having a fluid connection with a corporeal perfusion port downstream of the aortic shunt device.
Claim 26
Dependent Claim
15 words
The method of claim 16 , further comprising occluding blood flow through the patient's aorta.
Claim 27
Dependent Claim
25 words
The method of claim 16 , wherein the body of the aortic shunt device has an approximately cylindrical configuration with a central blood flow lumen.
Claim 28
Dependent Claim
14 words
The method of claim 25 , further comprising occluding the central blood flow lumen.
Claim 29
Dependent Claim
29 words
The method of claim 25 , further comprising creating a circumferential seal between an upstream end of the aortic shunt device and a wall of the patient's ascending aorta.
Claim 30
Dependent Claim
29 words
The method of claim 27 , further comprising creating a circumferential seal between a downstream end of the aortic shunt device and the wall of the patient's descending aorta.
Claim 31
Dependent Claim
28 words
The method of claim 16 , further comprising creating a seal between an upstream end of the aortic shunt device and a wall of the patient's ascending aorta.
Claim 32
Dependent Claim
28 words
The method of claim 29 , further comprising creating a seal between a downstream end of the aortic shunt device and the wall of the patient's descending aorta.
Claim 33
Dependent Claim
70 words
Apparatus for cerebral embolic protection, comprising: an aortic shunt device configured for placement in a patient's aortic arch, the aortic shunt device having an upstream end configured for intercepting embolic materials in the blood flow in a patient's ascending aorta, a body configured for redirecting the embolic materials past the patient's aortic arch vessels, and a downstream end configured for discharging the redirected embolic materials into the patient's descending aorta.
Claim 34
Dependent Claim
70 words
Apparatus for cerebral embolic protection, comprising: an aortic shunt device configured for placement in a patient's aortic arch, the aortic shunt device having an upstream end configured for intercepting embolic materials in the blood flow in a patient's ascending aorta, a body configured for redirecting the embolic materials past the patient's aortic arch vessels, and a downstream end configured for discharging the redirected embolic materials into the patient's descending aorta.
Claim 35
Dependent Claim
23 words
The apparatus of claim 31 , wherein the body of the aortic shunt device is made of a material impermeable to embolic materials.
Claim 36
Dependent Claim
25 words
The apparatus of claim 31 , wherein the body of the aortic shunt device is made of a material impermeable to blood and embolic materials.
Claim 37
Dependent Claim
39 words
The apparatus of claim 31 , further comprising an arch perfusion lumen in the elongated catheter shaft, the arch perfusion lumen having a fluid connection with an arch perfusion port external to the body of the aortic shunt device.
Claim 38
Dependent Claim
36 words
The apparatus of claim 34 , further comprising a coronary perfusion lumen in the elongated catheter shaft, the coronary perfusion lumen having a fluid connection with a coronary perfusion port upstream of the aortic shunt device.
Claim 39
Dependent Claim
36 words
The apparatus of claim 35 , further comprising a corporeal perfusion lumen in the elongated catheter shaft, the corporeal perfusion lumen having a fluid connection with a corporeal perfusion port downstream of the aortic shunt device.
Claim 40
Dependent Claim
17 words
The apparatus of claim 31 , further comprising a means for occluding blood flow through the aorta.
Claim 41
Dependent Claim
25 words
The apparatus of claim 31 , wherein the body of the aortic shunt device has an approximately cylindrical configuration with a central blood flow lumen.
Claim 42
Dependent Claim
17 words
The apparatus of claim 38 , further comprising a means for occluding the central blood flow lumen.
Claim 43
Dependent Claim
30 words
The apparatus of claim 39 , wherein the upstream end of the aortic shunt device is configured to create a circumferential seal with a wall of the patient's ascending aorta.
Claim 44
Dependent Claim
30 words
The apparatus of claim 40 , wherein the downstream end of the aortic shunt device is configured to create a circumferential seal with the wall of the patient's descending aorta.
Claim 45
Dependent Claim
26 words
The apparatus of claim 31 , wherein the upstream end of the aortic shunt device is configured to create a seal with the patient's ascending aorta.
Claim 46
Dependent Claim
26 words
The apparatus of claim 42 , wherein the downstream end of the aortic shunt device is configured to create a seal with the patient's descending aorta.
Claim 47
Dependent Claim
81 words
Apparatus for cerebral embolic protection, comprising: an aortic shunt device configured for placement in a patient's aortic arch, the aortic shunt device having an upstream end configured for intercepting blood flow from the patient's ascending aorta, a body configured for redirecting the blood flow from the patient's ascending aorta and any potential embolic materials contained in the blood flow past the patient's aortic arch vessels, and a downstream end configured for discharging the redirected blood flow into the patient's descending aorta.
Claim 48
Dependent Claim
81 words
Apparatus for cerebral embolic protection, comprising: an aortic shunt device configured for placement in a patient's aortic arch, the aortic shunt device having an upstream end configured for intercepting blood flow from the patient's ascending aorta, a body configured for redirecting the blood flow from the patient's ascending aorta and any potential embolic materials contained in the blood flow past the patient's aortic arch vessels, and a downstream end configured for discharging the redirected blood flow into the patient's descending aorta.
Claim 49
Dependent Claim
23 words
The apparatus of claim 44 , wherein the body of the aortic shunt device is made of a material impermeable to embolic materials.
Claim 50
Dependent Claim
25 words
The apparatus of claim 44 , wherein the body of the aortic shunt device is made of a material impermeable to blood and embolic materials.
Claim 51
Dependent Claim
39 words
The apparatus of claim 44 , further comprising an arch perfusion lumen in the elongated catheter shaft, the arch perfusion lumen having a fluid connection with an arch perfusion port external to the body of the aortic shunt device.
Claim 52
Dependent Claim
36 words
The apparatus of claim 47 , further comprising a coronary perfusion lumen in the elongated catheter shaft, the coronary perfusion lumen having a fluid connection with a coronary perfusion port upstream of the aortic shunt device.
Claim 53
Dependent Claim
36 words
The apparatus of claim 48 , further comprising a corporeal perfusion lumen in the elongated catheter shaft, the corporeal perfusion lumen having a fluid connection with a corporeal perfusion port downstream of the aortic shunt device.
Claim 54
Dependent Claim
17 words
The apparatus of claim 44 , further comprising a means for occluding blood flow through the aorta.
Claim 55
Dependent Claim
25 words
The apparatus of claim 44 , wherein the body of the aortic shunt device has an approximately cylindrical configuration with a central blood flow lumen.
Claim 56
Dependent Claim
17 words
The apparatus of claim 51 , further comprising a means for occluding the central blood flow lumen.
Claim 57
Dependent Claim
30 words
The apparatus of claim 51 , wherein the upstream end of the aortic shunt device is configured to create a circumferential seal with a wall of the patient's ascending aorta.
Claim 58
Dependent Claim
30 words
The apparatus of claim 53 , wherein the downstream end of the aortic shunt device is configured to create a circumferential seal with the wall of the patient's descending aorta.
Claim 59
Dependent Claim
26 words
The apparatus of claim 44 , wherein the upstream end of the aortic shunt device is configured to create a seal with the patient's ascending aorta.
Claim 60
Dependent Claim
26 words
The apparatus of claim 55 , wherein the downstream end of the aortic shunt device is configured to create a seal with the patient's descending aorta.
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) | 2007-02-23 | 2007-08-25 | 2008-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-02-23 | 2011-08-25 | 2012-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-02-23 | 2015-08-25 | 2016-02-24 | $7700.00 | Window Closed / Lapsed |