US6074357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cerebral protection during carotid endarterectomy and downstream vascular protection during other surgeries
Assignee: Edwards Lifesciences Corp
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Filing: 1998-10-21
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Granted: 2000-06-13
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Expires: 2018-10-21
Abstract
Abstract A shunt and method of use for maintaining distal blood flow during an arteriotomy procedure is disclosed. The shunt includes a first tubular member having a proximal end, a distal end, and a lumen therebetween. The proximal end has an opening in communication with the lumen, and the proximal opening is adapted to receive blood from a first region of an artery. The distal end has an opening in communication with the lumen, and the distal opening is adapted to release blood into a second region of the artery. The shunt includes a second tubular member having a proximal end, a distal end, and a lumen therebetween which either merges and communicates at its distal end with the lumen of the first tubular member, or rides separate and parallel to it. The shunt also includes a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of a medical device into the lumen of the second tubular member and into the artery. In use, the distal opening of the shunt is inserted into the second region of an artery and secured to the lumen of the artery. A blood filter device is deployed within the artery. The proximal opening of the shunt is inserted into the first region of the artery and secured to the lumen of the artery. Endarterectomy is performed on the region of the artery which lies between the proximal opening and the distal opening of the shunt, and embolic material dislodged during the procedure is captured by the filter.
Inventors
- 👤 Alan L. Kaganov
- 👤 Jonathan D. Root
- 👤 John McKenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:24
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/01; A61F2/013; A61B; A61B17/00; A61B17/22; A61F2/0105; A61F2/011; A61F2002/018; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0067; A61F2230/0093; A61M; A61M25/00; A61M25/0067; A61M25/0074; A61M2025/0079; A61M25/10; A61M2025/1043; A61M2025/1097; A61M25/0097
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
228 words
A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising: a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery; a second tubular member having a proximal end, a distal end, and a lumen therebetween which merges at an angle of substantially less than 90° and communicates at its distal end with the lumen of the first tubular member, thereby allowing introduction of a medical device into the lumen of the first tubular member; a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumens of the second and first tubular members; a first scaling balloon circumferentially disposed about the first tubular member and located substantially adjacent the distal end of the first tubular member; and a second sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the proximal end of the first tubular member.
Claim 2
Dependent Claim
228 words
A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising: a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery; a second tubular member having a proximal end, a distal end, and a lumen therebetween which merges at an angle of substantially less than 90° and communicates at its distal end with the lumen of the first tubular member, thereby allowing introduction of a medical device into the lumen of the first tubular member; a hemostatic valve attached to the proximal end of the second tubular member, the valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumens of the second and first tubular members; a first scaling balloon circumferentially disposed about the first tubular member and located substantially adjacent the distal end of the first tubular member; and a second sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the proximal end of the first tubular member.
Claim 3
Dependent Claim
31 words
The shunt of claim 1, further comprising: a blood filter disposed on an elongated instrument and insertable through the hemostatic valve into the lumens of the second and first tubular members.
Claim 4
Dependent Claim
250 words
A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising: a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery; a second tubular member having a proximal end an open distal end which is adapted to be in communication with the artery, and a lumen therebetween, the lumen having a first segment parallel to the lumen of the first tubular member and a second segment which branches away from the lumen of the first tubular member at an angle of substantially greater than 90°, thereby allowing introduction of a medical device into the lumen of the first segment; a hemostatic valve attached to the proximal end of the second tubular member, said valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumen of the second tubular member; a first sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the distal end of the first tubular member; and a second sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the proximal end of the first tubular member.
Claim 5
Dependent Claim
250 words
A shunt for maintaining distal blood flow during an arteriotomy procedure, comprising: a first tubular member having a proximal end, a distal end, and a lumen therebetween, the proximal end having an opening in communication with the lumen, the proximal opening is adapted to receive blood from a first region of an artery, the distal end having an opening in communication with the lumen, the distal opening is adapted to release blood into a second region of the artery; a second tubular member having a proximal end an open distal end which is adapted to be in communication with the artery, and a lumen therebetween, the lumen having a first segment parallel to the lumen of the first tubular member and a second segment which branches away from the lumen of the first tubular member at an angle of substantially greater than 90°, thereby allowing introduction of a medical device into the lumen of the first segment; a hemostatic valve attached to the proximal end of the second tubular member, said valve acting to prevent loss of blood from the lumen of the second tubular member and to permit the introduction of the medical device into the lumen of the second tubular member; a first sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the distal end of the first tubular member; and a second sealing balloon circumferentially disposed about the first tubular member and located substantially adjacent the proximal end of the first tubular member.
Claim 6
Dependent Claim
29 words
The shunt of claim 3, further comprising: a blood filter disposed on an elongated instrument and insertable through the hemostatic valve into the lumen of the second tubular member.
Claim 7
Independent Claim
181 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, the shunt further comprising a first sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the distal end of the tubular member, and a second sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the proximal end of the tubular member; inserting the distal opening into a first region of a carotid artery and securing the shunt against the lumen of the carotid artery by inflating the first sealing balloon; deploying a blood filter device within the carotid artery and distal to the distal opening of the shunt; inserting the proximal opening into a second region of the carotid artery and securing the shunt against the lumen of the carotid artery by inflating the second sealing balloon; and performing an endarterectomy procedure on a region of the carotid artery that lies between the proximal opening and the distal opening of the shunt.
Claim 8
Independent Claim
181 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, the shunt further comprising a first sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the distal end of the tubular member, and a second sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the proximal end of the tubular member; inserting the distal opening into a first region of a carotid artery and securing the shunt against the lumen of the carotid artery by inflating the first sealing balloon; deploying a blood filter device within the carotid artery and distal to the distal opening of the shunt; inserting the proximal opening into a second region of the carotid artery and securing the shunt against the lumen of the carotid artery by inflating the second sealing balloon; and performing an endarterectomy procedure on a region of the carotid artery that lies between the proximal opening and the distal opening of the shunt.
Claim 9
Dependent Claim
26 words
The method of claim 5, wherein the blood filter is deployed before the distal opening and proximal opening are inserted and secured to the carotid artery.
Claim 10
Dependent Claim
37 words
The method of claim 5, wherein the proximal opening is inserted and secured to the second region of the carotid artery before the distal opening is inserted and secured to the first region of the carotid artery.
Claim 11
Dependent Claim
97 words
The method of claim 5, wherein the shunt further comprises a second lumen having a first opening which merges and communicates with the lumen of the tubular member and a second opening adapted to receive the blood filter device, and wherein the step of deploying the blood filter device further comprises the steps of: inserting the blood filter into the second opening of the second lumen; advancing the blood filter into and beyond the lumen of the tubular member; and expanding the blood filter to cover a substantial portion of the cross-sectional area of the carotid artery.
Claim 12
Dependent Claim
28 words
The method of claim 8, wherein the step of expanding the blood filter comprises the step of expanding an inflation seal to which the blood filter is attached.
Claim 13
Dependent Claim
100 words
The method of claim 5, wherein the shunt further comprises a second lumen having a first segment which lies substantially parallel to the lumen of the tubular member and a second segment which branches away from the lumen of the tubular member, and wherein the step of deploying the blood filter device further comprises the steps of: inserting the blood filter into the second segment of the second lumen; advancing the blood filter into and beyond the first segment of the second lumen; and expanding the blood filter to cover a substantial portion of the cross-sectional area of the artery.
Claim 14
Dependent Claim
28 words
The method of claim 10, wherein the step of expanding the blood filter comprises the step of expanding an inflation seal to which the blood filter is attached.
Claim 15
Dependent Claim
65 words
The method of claim 5, wherein the step of deploying the blood filter further comprises the steps of: inserting an introducer sheath into the carotid artery distal to the distal opening of the shunt; inserting the blood filter through the introducer sheath and into the carotid artery; and expanding the blood filter to cover a substantial portion of the cross-sectional area of the carotid artery.
Claim 16
Dependent Claim
28 words
The method of claim 12, wherein the step of expanding the blood filter comprises the step of expanding an inflation seal to which the blood filter is attached.
Claim 17
Dependent Claim
25 words
The method claim 5, wherein the step of securing the shunt against the lumen of the carotid artery includes securing the shunt using a clamp.
Claim 18
Independent Claim
189 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a non-indwelling shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, a second lumen having a first opening that merges and communicates with the lumen of the tubular member and a second opening adapted to receive a blood filter device; inserting the distal opening into a first region of a vessel and securing the shunt against the lumen of the vessel; inserting the blood filter into the second opening of the second lumen; advancing the blood filter into and beyond the lumen of the tubular member; expanding the blood filter to cover a substantial portion of the cross-sectional area of the vessel; inserting the proximal opening into a second region of the vessel and securing the shunt against the lumen of the vessel, wherein a portion of the non-indwelling shunt between the proximal opening and the distal opening extends outside the vessel; and performing the surgical procedure on a region of the vessel that lies between the proximal opening and the distal opening of the shunt.
Claim 19
Independent Claim
189 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a non-indwelling shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, a second lumen having a first opening that merges and communicates with the lumen of the tubular member and a second opening adapted to receive a blood filter device; inserting the distal opening into a first region of a vessel and securing the shunt against the lumen of the vessel; inserting the blood filter into the second opening of the second lumen; advancing the blood filter into and beyond the lumen of the tubular member; expanding the blood filter to cover a substantial portion of the cross-sectional area of the vessel; inserting the proximal opening into a second region of the vessel and securing the shunt against the lumen of the vessel, wherein a portion of the non-indwelling shunt between the proximal opening and the distal opening extends outside the vessel; and performing the surgical procedure on a region of the vessel that lies between the proximal opening and the distal opening of the shunt.
Claim 20
Independent Claim
203 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, the shunt further comprising a first sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the distal end of the first tubular member, and a second sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the proximal end of the first tubular member; inserting the distal opening into a first region of a vessel and securing the shunt against the lumen of the vessel by inflating the first sealing balloon; inserting an introducer sheath into the vessel distal to the distal opening of the shunt; inserting the blood filter through the introducer sheath and into the vessel; expanding the blood filter to cover a substantial portion of the cross-sectional area of the vessel; inserting the proximal opening into a second region of the vessel and securing the shunt against the lumen of the vessel by inflating the second sealing balloon; and performing a surgical procedure on a region of the vessel that lies between the proximal opening and the distal opening of the shunt.
Claim 21
Independent Claim
203 words
A method for maintaining distal blood flow during a surgical procedure, comprising the steps of: providing a shunt comprising a tubular member having a proximal opening, a distal opening, and a lumen therebetween, the shunt further comprising a first sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the distal end of the first tubular member, and a second sealing balloon circumferentially disposed about the tubular member and located substantially adjacent the proximal end of the first tubular member; inserting the distal opening into a first region of a vessel and securing the shunt against the lumen of the vessel by inflating the first sealing balloon; inserting an introducer sheath into the vessel distal to the distal opening of the shunt; inserting the blood filter through the introducer sheath and into the vessel; expanding the blood filter to cover a substantial portion of the cross-sectional area of the vessel; inserting the proximal opening into a second region of the vessel and securing the shunt against the lumen of the vessel by inflating the second sealing balloon; and performing a surgical procedure on a region of the vessel that lies between the proximal opening and the distal opening of the shunt.
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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) | 2003-06-13 | 2003-12-13 | 2004-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-13 | 2007-12-13 | 2008-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-13 | 2011-12-13 | 2012-06-13 | $7700.00 | Window Closed / Lapsed |