Method and device for rapidly inducing and then maintaining hypothermia
First Claim
1. A head-cooling device for inducing hypothermia comprising:
- a cap having an outer surface and an inner surface;
a first sealing member disposed on the inner surface of the cap about a circumference defined by the cap, the first sealing member defining a first inner surface of the cap and a second inner surface of the cap, the first sealing member, the first inner surface of the cap, and a first portion of a head defining a fluid circulation space;
a second sealing member disposed on the second inner surface of the cap about a rim defined by the cap, the first sealing member, the second inner surface of the cap, and the second sealing member defining an aspiration channel;
a fluid inlet in communication with the fluid circulation space and configured to receive a cooling fluid from a fluid source via a positive gage pressure; and
an aspiration channel outlet in communication with the aspiration channel and configured to remove air from the aspiration channel, via a negative gage pressure, to seal the rim of the cap to a second portion of the head.
1 Assignment
0 Petitions
Accused Products
Abstract
A cooling system includes a console and a tissue cooling device such as a head-cooling device. An operator applies the head-cooling device to the head of a patient at risk for ischemic injury. The console provides a cooling fluid to a fluid circulation space located between the cooling device and the patient'"'"'s head under a positive gage pressure. Direct contact between the cooling fluid and the patient'"'"'s head provides a relatively rapid induction of systemic hypothermia in the patient, thereby minimizing or preventing ischemic injury in the patient. The console also removes air from a channel disposed about an inner rim of the cooling device, using a negative gage pressure. Such removal of the air from the channel seals the rim of the cooling device to the head of the patient, including portions of the channel in contact with hair of the patient'"'"'s head, and minimizes leaking of the cooling fluid beyond the rim of the cooling device.
-
Citations
49 Claims
-
1. A head-cooling device for inducing hypothermia comprising:
-
a cap having an outer surface and an inner surface; a first sealing member disposed on the inner surface of the cap about a circumference defined by the cap, the first sealing member defining a first inner surface of the cap and a second inner surface of the cap, the first sealing member, the first inner surface of the cap, and a first portion of a head defining a fluid circulation space; a second sealing member disposed on the second inner surface of the cap about a rim defined by the cap, the first sealing member, the second inner surface of the cap, and the second sealing member defining an aspiration channel; a fluid inlet in communication with the fluid circulation space and configured to receive a cooling fluid from a fluid source via a positive gage pressure; and an aspiration channel outlet in communication with the aspiration channel and configured to remove air from the aspiration channel, via a negative gage pressure, to seal the rim of the cap to a second portion of the head. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A cooling system for inducing hypothermia comprising:
a console having; a housing; a fluid reservoir in communication with the housing, the fluid reservoir configured to hold a cooling fluid; a positive gage pressure source in communication with the housing, the positive gage pressure source in fluid communication with the fluid reservoir; and a negative gage pressure source in communication with the housing; and
a head-cooling device having;a cap having an outer surface and an inner surface; a first sealing member disposed on the inner surface of the cap about a circumference defined by the cap, the first sealing member defining a first inner surface of the cap and a second inner surface of the cap, the first sealing member, the first inner surface of the cap, and a first portion of a head defining a fluid circulation space; a second sealing member disposed on the second inner surface of the cap about a rim defined by the cap, the first sealing member, the second inner surface of the cap, and the second sealing member defining an aspiration channel; a fluid inlet in communication with the fluid circulation space and in fluid communication with the positive gage pressure source to receive a cooling fluid from the fluid reservoir via a positive gage pressure; and an aspiration channel outlet in communication with the aspiration channel and in fluid communication with the negative gage pressure source, the negative gage pressure source configured to remove air from the aspiration channel, via a negative gage pressure, to seal the rim of the cap to a second portion of the head. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
-
41. A head-cooling device for inducing hypothermia comprising:
-
a cap having an outer surface and an inner surface;
a first sealing member disposed on the inner surface of the cap about a circumference defined by the cap, the first sealing member defining a first inner surface of the cap and a second inner surface of the cap, the first sealing member, the first inner surface of the cap, and a first portion of a head defining a fluid circulation space;a second sealing member disposed on the second inner surface of the cap about a rim defined by the cap, the first sealing member, the second inner surface of the cap, and the second sealing member defining a channel; a first fluid inlet in communication with the fluid circulation space and configured to receive a cooling fluid from a fluid source via a positive gage pressure; and a second fluid inlet in communication with the channel and configured to receive fluid, via a positive gage pressure, to seal the rim of the cap to a second portion of the head, the pressure within the channel greater than the pressure within the fluid circulation space.
-
-
42. A tissue cooling device for inducing hypothermia comprising:
-
a tissue covering portion having an outer surface and an inner surface; a first sealing member disposed on the inner surface of the tissue covering portion about an inner edge defined by the tissue covering portion, the first sealing member defining a first inner surface of the tissue covering portion and a second inner surface of the tissue covering portion, the first sealing member, the first inner surface of the tissue covering portion, and a first portion of a tissue region of interest defining a fluid circulation space; a second sealing member disposed on the second inner surface of the tissue covering portion about an outer edge defined by the tissue covering portion, the first sealing member, the second inner surface of the tissue covering portion, and the second sealing member defining an aspiration channel; a fluid inlet in communication with the fluid circulation space and configured to receive a cooling fluid from a fluid source via a positive gage pressure; and an aspiration channel outlet in communication with the aspiration channel and configured to remove air from the aspiration channel, via a negative gage pressure, to seal the outer edge of the tissue covering portion to a second portion of the tissue region of interest. - View Dependent Claims (43, 44, 45)
-
-
46. A cooling system for inducing hypothermia comprising:
-
a console having; a housing; a fluid reservoir in communication with the housing, the fluid reservoir configured to hold a cooling fluid; a positive gage pressure source in communication with the housing, the positive gage pressure source in fluid communication with the fluid reservoir; and a negative gage pressure source in communication with the housing; and a tissue cooling device having; a tissue covering portion having an outer surface and an inner surface, a first sealing member disposed on the inner surface of the tissue covering portion about an inner edge defined by the tissue covering portion, the first sealing member defining a first inner surface of the tissue covering portion and a second inner surface of the tissue covering portion, the first sealing member, the first inner surface of the tissue covering portion, and a first portion of a tissue region of interest defining a fluid circulation space, a second sealing member disposed on the second inner surface of the tissue covering portion about an outer edge defined by the tissue covering portion, the first sealing member, the second inner surface of the tissue covering portion, and the second sealing member defining an aspiration channel, a fluid inlet in communication with the fluid circulation space in fluid communication with the positive gage pressure source to receive a cooling fluid from the positive gage pressure source via a positive gage pressure, and an aspiration channel outlet in communication with the aspiration channel and in fluid communication with the negative gage pressure source to remove air from the aspiration channel, via a negative gage pressure, to seal the outer edge of the tissue covering portion to a second portion of the tissue region of interest. - View Dependent Claims (47, 48, 49)
-
Specification