Source: http://www.google.com/patents/US6409747?dq=5893120
Timestamp: 2015-07-07 14:56:28
Document Index: 269758723

Matched Legal Cases: ['application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09']

Patent US6409747 - Indwelling heat exchange catheter and method of using same - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include at least one balloon which is adapted to receive a remotely cooled...http://www.google.com/patents/US6409747?utm_source=gb-gplus-sharePatent US6409747 - Indwelling heat exchange catheter and method of using sameAdvanced Patent SearchPublication numberUS6409747 B1Publication typeGrantApplication numberUS 09/503,014Publication dateJun 25, 2002Filing dateFeb 11, 2000Priority dateApr 21, 1998Fee statusPaidAlso published asUS6126684, US6416533, US6755851, US20020151945, US20020169490, WO2000047145A1, WO2000047145A8, WO2000047145A9Publication number09503014, 503014, US 6409747 B1, US 6409747B1, US-B1-6409747, US6409747 B1, US6409747B1InventorsYves Pierre Gobin, Scott Evans, Mike Jones, Wayne NodaOriginal AssigneeAlsius Corporation, The Regents Of The University Of CaliforniaExport CitationBiBTeX, EndNote, RefManPatent Citations (101), Non-Patent Citations (17), Referenced by (32), Classifications (8), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetIndwelling heat exchange catheter and method of using same
US 6409747 B1Abstract
a shaft having an axis extending between a proximal end and a distal end, the shaft having at least one input lumen and at least one output lumen; a heat exchange region disposed substantially at the distal end of the shaft and including at least a first balloon and at least a second balloon each having an outer surface; the input lumen of the shaft being coupled to the first balloon at a first location, and the output lumen of the shaft being coupled to the first balloon at a second location so that a heat exchange fluid introduced into the input lumen will enter the first balloon at the first location and will exit the first balloon at the second location through the output lumen. 2. The catheter of claim 1, the first location and second location being disposed along a first direction in a body conduit in which body fluid is flowing when the catheter is operatively disposed in the body fluid.
3. The catheter of claim 1, wherein the input lumen and the output lumen are also coupled to the second balloon.
4. A heat exchange catheter, comprising:
a shaft having an axis, at least one fluid input lumen, and at least one fluid output lumen; a hub disposed proximally on the shaft and providing access to the fluid input lumen and the fluid output lumen; a first balloon disposed distally on the shaft and defining with the shaft an inflatable first cavity; a second balloon disposed on the shaft and defining with the shaft an inflatable second cavity; and the input lumen and output lumen communicating with the cavities. 5. The catheter of claim 4, the shaft defining a first inlet hole for establishing fluid communication between the fluid input lumen and the first cavity; and
the shaft defining a first outlet hole for establishing fluid communication between the first cavity and the fluid output lumen. 6. The catheter of claim 3, wherein the first outlet hole is larger than the first inlet hole.
a shaft having an axis extending between a proximal end and a distal end, the shaft having at least one input lumen and at least one output lumen; a heat exchange region disposed substantially at the distal end of the shaft and including a first balloon, a second balloon and a third balloon each having an outer surface; the input lumen of the shaft being coupled to the first balloon at a first location, and the output lumen of the shaft being coupled to the first balloon at a second location so that a heat exchange fluid introduced into the input lumen will enter the first balloon at the first location and will exit the first balloon at the second location through the output lumen. Description
This application is a continuation of U.S. application Ser. No. 09/063,984 filed on Apr. 21, 1998, now issued as U.S. Pat. No. 6,126,684, the disclosure of which is herein incorporated by reference in its entirety.
A heat exchange catheter is illustrated in FIG. 1 and designated generally by the reference numeral 10. The catheter 10 is operatively disposed with respect to a body 12 of a patient having a groin 14, a head 16, and a brain 18. More specifically, the catheter 10 can be inserted percutaneously through a puncture or surgical cut down at the groin 14, and into the femoral artery 21. Following this initial introduction, the catheter 10 can be moved through the femoral artery 21 and the aortic arch 23, into the common carotid artery 25 best illustrated in FIG. 2. This common carotid artery 25 divides at a carotid branch 27 into an external carotid artery 30, which primarily supplies blood 31 to the face if the patient, and an internal carotid artery 32, which primarily supplies blood to the brain 18 of the patient.
A preferred embodiment of the catheter 10 of the present invention is illustrated in FIG. 3 and 4. From this perspective view, it can be seen that the catheter 10 includes a shaft 40 having an axis 41 which extends between a proximal end 43 and a distal end 45. When operatively disposed, a heat exchange region 47 at the distal end 45 is operatively disposed within the body 12, and a hub 50 at the proximal end 43 is disposed outside of the body 12. Within the shaft 40, a plurality of lumens 52 and 54 extend in fluid communication with the hub 50 and the heat exchange region 47.
A further embodiment of the catheter 10 is contemplated for maximizing the surface area available for heat exchange. As illustrated in FIGS. 10A and 10B, the catheter 10 can be formed with a distal end 45 of the shaft 40 disposed in the natural configuration of a spiral or pigtail 172. The relatively large diameter of the pigtail 172 facilitates heat exchange, but tends to deter from a low profile desire for insertion. Under these circumstances, it may be advantageous to insert the catheter 10 over a stylet or guidewire 174 in order to straighten the pigtail 172 as illustrated in figure 10B.
As noted, the heat exchange fluid 85 may be cooled to a sub-zero temperature such as −18� C. In order to thermally protect the internal lining of the artery 32 from direct contact with the sub-zero coolant, it may be desirable to provide the tips of the flutes 183 with a thicker wall 185, as shown in FIG. 16. This thicker wall 185 might be advantageous in any of the balloon configurations previously discussed, but would appear to be most advantageous in the embodiments of FIG. 7 and 15 where the contact with the artery 32 tends to be more localized by the longitutudal balloons 103, 105 (FIG. 7) on the spiral flutes 183 (FIG. 15).
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(OLD NAME);REEL/FRAME:010821/0240Effective date: 20000211Owner name: ALSIUS CORPORATION (NEW NAME) SUITE 150 15770 LAGUOwner name: ALSIUS CORPORATION (NEW NAME) SUITE 150 15770 LAGUFree format text: CHANGE OF NAME;ASSIGNOR:NEUROPERFUSION, INC. (OLD NAME);REEL/FRAME:010821/0240Effective date: 20000211Aug 1, 2000ASAssignmentOwner name: REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE, CALIFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GOBIN, YVES PIERRE;EVANS, SCOTT M.;JONES, MIKE;AND OTHERS;REEL/FRAME:011118/0576;SIGNING DATES FROM 19980415 TO 19990302Owner name: REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE 12THOwner name: REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE 12THFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GOBIN, YVES PIERRE;EVANS, SCOTT M.;JONES, MIKE;AND OTHERS;REEL/FRAME:011118/0576;SIGNING DATES FROM 19980415 TO 19990302Dec 27, 2005FPAYFee paymentYear of fee payment: 4Aug 29, 2009ASAssignmentOwner name: ZOLL CIRCULATION, INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALSIUS CORPORATION;ALSIUS MEDICAL CORPORATION;REEL/FRAME:023163/0419Effective date: 20090504Dec 28, 2009FPAYFee paymentYear of fee payment: 8Dec 25, 2013FPAYFee paymentYear of fee payment: 12RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services