Multi-lumen heat transfer catheters
First Claim
1. Fluid circulation catheter apparatus for circulating a heat transfer fluid along a closed path from a proximal region of said catheter apparatus, to a distal region of said apparatus, and returning said fluid to a proximal region of said apparatus, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein at least three of said first section lumens are common-wall-sharing lumens each of which shares a common, very thin, integrally-formed wall portion with at least one adjacent common-wall-sharing lumen along at least a section of their respective axial lengths, and further wherein:
- (a) at least one of said common-wall-sharing lumens is a fluid inflow-lumen having inflow-lumen proximal and distal ends, an inflow-lumen fluid inlet proximate to the inflow-lumen proximal end, and an inflow-lumen fluid outlet between the inflow-lumen fluid inlet and the inflow-lumen distal end;
(b) at least one of said common-wall-sharing lumens is a fluid outflow-lumen having outflow-lumen proximal and distal ends, an outflow-lumen fluid outlet proximate to the outflow-lumen proximal end, and an outflow-lumen fluid inlet between the outflow-lumen fluid outlet and the outflow-lumen distal end; and
,(c) the common wall portion between said inflow-lumen and said outflow-lumen includes at least an aperture that serves as an inflow-lumen fluid outlet and an outflow-lumen fluid inlet.
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0 Petitions
Accused Products
Abstract
Heat transfer catheter apparatus and methods of making and using same are disclosed wherein fluid connection means is provided between the distal portions of two adjacent, thin-walled, high strength fluid lumens to define a closed loop fluid circulation system capable of controlled delivery of thermal energy to or withdrawal of thermal energy from remote internal body locations.
114 Citations
47 Claims
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1. Fluid circulation catheter apparatus for circulating a heat transfer fluid along a closed path from a proximal region of said catheter apparatus, to a distal region of said apparatus, and returning said fluid to a proximal region of said apparatus, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein at least three of said first section lumens are common-wall-sharing lumens each of which shares a common, very thin, integrally-formed wall portion with at least one adjacent common-wall-sharing lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least one of said common-wall-sharing lumens is a fluid inflow-lumen having inflow-lumen proximal and distal ends, an inflow-lumen fluid inlet proximate to the inflow-lumen proximal end, and an inflow-lumen fluid outlet between the inflow-lumen fluid inlet and the inflow-lumen distal end; (b) at least one of said common-wall-sharing lumens is a fluid outflow-lumen having outflow-lumen proximal and distal ends, an outflow-lumen fluid outlet proximate to the outflow-lumen proximal end, and an outflow-lumen fluid inlet between the outflow-lumen fluid outlet and the outflow-lumen distal end; and
,(c) the common wall portion between said inflow-lumen and said outflow-lumen includes at least an aperture that serves as an inflow-lumen fluid outlet and an outflow-lumen fluid inlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27, 28, 46)
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18. Catheter apparatus for adding or removing heat from an internal body region, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein each of at least three of said first section lumens shares a common, very thin, integrally-formed wall portion with at least one adjacent first section lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least one of said first section lumens is a heat transfer fluid inflow-lumen having a heat transfer fluid inlet; (b) at least one of said first section lumens is a heat transfer fluid outflow-lumen having a heat transfer fluid outlet, said outflow-lumen being in fluid communication with said inflow-lumen for circulation of a heat transfer fluid; and
,(c) at least one of said first section lumens is a perfusion lumen having a body fluid inlet and a body fluid outlet, wherein at least one of said inflow- and outflow-lumens has a heat transfer region therealong adjacent to a wall of said perfusion lumen. - View Dependent Claims (19, 20, 21, 22, 29, 30, 31)
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23. Fluid circulation catheter apparatus for circulating a heat transfer fluid along a closed path from a proximal region of said catheter apparatus, to a distal region of said apparatus, and returning said fluid to a proximal region of said apparatus, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein at least three of said first section lumens are common-wall-sharing lumens each of which shares a common, very thin, integrally-formed wall portion with at least one adjacent common-wall-sharing lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least two of said common-wall-sharing lumens are fluid inflow-lumens, each having inflow-lumen proximal and distal ends, an inflow-lumen fluid inlet proximate to the inflow-lumen proximal end, and an inflow-lumen fluid outlet between the inflow-lumen fluid inlet and the inflow-lumen distal end; (b) at least two of said common-wall-sharing lumens are fluid outflow-lumens, each having outflow-lumen proximal and distal ends, an outflow-lumen fluid outlet proximate to the outflow-lumen proximal end, and an outflow-lumen fluid inlet between the outflow-lumen fluid outlet and the outflow-lumen distal end; and
,(c) the common wall portions between respective sets of inflow-lumens and the associated outflow-lumens each include at least an aperture that serves as an inflow-lumen fluid outlet and an outflow-lumen fluid inlet. - View Dependent Claims (32, 33)
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24. Fluid circulation catheter apparatus for circulating a heat transfer fluid along a closed path from a proximal region of said catheter apparatus, to a distal region of said apparatus, and returning said fluid to a proximal region of said apparatus, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein at least three of said first section lumens are common-wall-sharing lumens each of which shares a common, very thin, integrally-formed wall portion with at least one adjacent common-wall-sharing lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least one of said common-wall-sharing lumens is a fluid inflow-lumen having inflow-lumen proximal and distal ends, an inflow-lumen fluid inlet proximate to the inflow-lumen proximal end, and an inflow-lumen fluid outlet between the inflow-lumen fluid inlet and the inflow-lumen distal end; (b) at least one of said common-wall-sharing lumens is a fluid outflow-lumen having outflow-lumen proximal and distal ends, an outflow-lumen fluid outlet proximate to the outflow-lumen proximal end, and an outflow-lumen fluid inlet between the outflow-lumen fluid outlet and the outflow-lumen distal end; and
,(c) the common wall portion between said inflow-lumen and said outflow-lumen includes at least an aperture that serves as an inflow-lumen fluid outlet and an outflow-lumen fluid inlet; further wherein at least three common-wall-sharing lumens are peripheral lumens, each having at least an exterior wall portion or a wall portion adjacent to an exterior wall, and further wherein said peripheral lumens surround at least one common-wall-sharing interior lumen, which has no exterior wall portions and no wall portions adjacent to an exterior wall along said first section of said catheter. - View Dependent Claims (34, 35, 36, 37)
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25. Catheter apparatus for adding or removing heat from an internal body region, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein each of at least three of said first section lumens shares a common, very thin, integrally-formed wall portion with at least one adjacent first section lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least two of said first section lumens are heat transfer fluid inflow-lumens, each having a heat transfer fluid inlet; (b) at least two of said first section lumens are heat transfer fluid outflow-lumens, each having a heat transfer fluid outlet, each said outflow-lumen being in fluid communication with at least one associated inflow-lumen for circulation of a heat transfer fluid; and
,(c) at least one of said first section lumens is a perfusion lumen having a body fluid inlet and a body fluid outlet, wherein at least one set of associated inflow- and outflow-lumens has a heat transfer region therealong adjacent to a wall of said perfusion lumen. - View Dependent Claims (38, 39, 40)
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26. Catheter apparatus for adding or removing heat from an internal body region, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section consisting essentially of an orientable thermoplastic polymer, at least a portion of which has been at least partially oriented so as to be very thin-walled, high tensile strength, flexible, readily inflatable under fluid pressure and readily collapsible under vacuum, said first section of said catheter comprising three or more first section lumens wherein each of at least three of said first section lumens shares a common, very thin, integrally-formed wall portion with at least one adjacent first section lumen along at least a section of their respective axial lengths, and further wherein:
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(a) at least one of said first section lumens is a heat transfer fluid inflow-lumen having a heat transfer fluid inlet; (b) at least one of said first section lumens is a heat transfer fluid outflow-lumen having a heat transfer fluid outlet, said outflow-lumen being in fluid communication with said inflow-lumen for circulation of a heat transfer fluid; and
,(c) at least one of said first section lumens is a perfusion lumen having a body fluid inlet and a body fluid outlet, wherein at least one of said inflow- and outflow-lumens has a heat transfer region therealong adjacent to a wall of said perfusion lumen; further wherein at least three first section lumens are peripheral lumens, each having at least an exterior wall portion or a wall portion adjacent to an exterior wall, and further wherein said peripheral lumens surround at least one interior first section lumen, which has no exterior wall portions and no wall portions adjacent to an exterior wall along said first section of said catheter. - View Dependent Claims (41, 42, 43, 44, 45)
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47. Fluid circulation catheter apparatus for circulating a heat transfer fluid along a closed path from a proximal region of said catheter apparatus, to a distal region of said apparatus, and returning said fluid to a proximal region of said apparatus, said apparatus comprising a multi-lumen catheter comprising wall portions along at least a first section of said catheter, said first section of said catheter comprising three or more first section lumens at least one of which is formed to have a varying cross-sectional diameter along its length in order to cause turbulent fluid flow along its length for purposes of increased heat transfer, and wherein at least three of said first section lumens are common-wall-sharing lumens and further wherein:
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(a) at least one of said common-wall-sharing lumens is a fluid inflow-lumen having inflow-lumen proximal and distal ends, an inflow-lumen fluid outlet proximate to the inflow-lumen distal end; (b) at least one of said common-wall-sharing lumens is a fluid outflow-lumen having outflow-lumen proximal and distal ends, an outflow-lumen fluid inlet proximate to the outflow-lumen distal end; and
,(c) an aperture between the inflow-lumen fluid outlet and an outflow-lumen fluid inlet.
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Specification