Granted Patent
B2
US 12,491,017 · App. 16/814,220 · Granted Dec 9, 2025
Methods and devices for selective disruption of visceral fat by controlled cooling
Inventors:
Matthew M. Avram (Boston, MA); Richard Rox Anderson (Boston, MA); Joshua Tam (Charlestown, MA)
Assignee:
The General Hospital Corporation
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Abstract
In one aspect, the present invention provides a method of cooling to produce selective disruption of visceral fat tissue in a non-infant human subject comprising infusing a cooled fluid into the abdominal or peritoneal cavity, or into other parts of the body containing visceral fat, to cool the proximal tissue sufficiently to selectively disrupt lipid-rich cells therein, for example, to promote subsequent damage and absorption of lipid-rich cells by the body without producing unwanted effects in non-lipid-rich cells; e.g., without injury to internal organ tissues that could otherwise produce life-threating risks. The cooled fluid can be infused using a catheter arrangement. The cooled fluid can be retained within the abdominal category for a particular duration, and then drained using the catheter arrangement. In certain embodiments, the cooled fluid can be simultaneously introduced into the abdominal cavity and drained therefrom.
Claims (35)
1 . A method for selective disruption of lipid-rich visceral fat in a non-infant human subject comprising:
applying a cooling substance at a temperature of less than about 20° C to a location proximal to the subject's visceral fat to reduce the temperature within a local region containing the visceral fat and to selectively disrupt at least a portion of the visceral fat of said region, and
controlling application of the cooling substance to disrupt at least a portion of the visceral fat and not disrupt non-lipid-rich cells proximal to the visceral fat.
2 . The method of claim 1 , wherein the cooling substance is provided within the abdominal cavity of the subject.
3 . The method of claim 1 , further comprising removing at least a portion of the cooling substance from the location after a predetermined time interval.
4 . The method of claim 3 , wherein the predetermined time interval is at least about 5 minutes.
5 . The method of claim 3 , wherein the predetermined time interval is at least about 10 minutes.
6 . The method of claim 1 wherein the cooling substance is a liquid.
7 . The method of claim 6 , wherein the cooling substance comprises an aqueous solution.
8 . The method of claim 7 , wherein the aqueous solution is at least one of an isotonic solution or a saline solution.
9 . The method of claim 6 , wherein the cooling substance is provided at a temperature that is less than about 15° C.
10 . The method of claim 6 , wherein the cooling substance is provided at a temperature that is less than about 10° C.
11 . The method of claim 6 , wherein the cooling substance comprises a solid-liquid slurry capable of undergoing a phase change at a substantially stable temperature.
12 . The method of claim 1 , further comprising inserting a catheter through at least a portion of the subject's body such that a distal end of the catheter is proximal to visceral fat of the subject, and wherein applying the cooling substance comprises providing the cooling substance through a lumen in the catheter.
13 . The method of claim 12 , further comprising measuring a temperature of at least one of the cooling substance applied to the location or a portion of the cooling substance that is withdrawn from the location after a particular time interval.
14 . The method of claim 13 , further comprising providing a further quantity of the cooling substance to the location, wherein at least one of the temperature or the amount of the further quantity of the cooling substance is selected based on the measured temperature.
15 . The method of claim 1 , further comprising heating a portion of the subject's body to reduce cooling of a portion of the body away from the local region containing the visceral fat.
16 . The method of claim 1 , further comprising removing a portion of the cooling substance from the location while introducing a further quantity of the cooling substance at a temperature of less than about 20° C. to the location.
17 . The method of claim 16 , wherein at least one of the temperature, the amount, or the flow rate of the further quantity of the cooling substance is selected based on a temperature of the removed portion of the cooling substance.
18 . The method of claim 1 , wherein controlling application of the cooling substance includes controlling the temperature of the cooling substance and/or the flow rate of the cooling substance applied within the local region.
19 . The method of claim 18 , further comprising pulsing the cooling substance to form periods of warming of the local region between pulsed cooling.
20 . The method of claim 1 , wherein controlling application of the cooling substance includes controlling the cooling substance applied within the local region to achieve localized crystallization of highly saturated fatty acids in the visceral fat.
21 . A method for selective disruption of lipid-rich visceral fat in a non-infant human subject comprising:
applying a cooling substance at a temperature of less than about 20° C. to a location proximal to the subject's visceral fat to reduce the temperature within a local region containing the visceral fat and to selectively disrupt at least a portion of the visceral fat of said region,
wherein the cooling substance is provided within a flexible container in the location,
wherein the cooling substance is a liquid, and
wherein the cooling substance comprises a vasoconstrictor.
22 . An apparatus for cooling a local region of tissue of a non-infant human subject containing visceral fat, comprising:
a reservoir configured to hold a cooling substance;
a catheter comprising at least one lumen, wherein the catheter is configured to be inserted into the subject such that at least a portion of the catheter is proximal to the local region of tissue;
a conduit configured to facilitate passage of the cooling substance from the reservoir to the local region of tissue, wherein the local region of tissue is within the abdominal cavity of the subject; and
a controller configured to control the temperature of the cooling substance and/or the flow rate of the cooling substance through the catheter to disrupt at least a portion of visceral fat in the local region of tissue proximal to the catheter and not disrupt non-lipid-rich cells proximal to the visceral fat.
23 . The apparatus of claim 22 , wherein the conduit is connected to the at least one lumen to facilitate passage of the cooling substance therethrough.
24 . The apparatus of claim 22 , wherein the controller is further configured to control pulsing of the cooling substance through the catheter to create periods of warming of the local region between pulsed cooling.
25 . The apparatus of claim 22 , wherein the controller is configured to control the temperature of the cooling substance and/or the flow rate of the cooling substance to create localized crystallization of highly saturated fatty acids in the visceral fat.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 14, 2023
From: AVRAM, MATTHEW M.; ANDERSON, RICHARD R.; TAM, JOSHUA
To: THE GENERAL HOSPITAL CORPORATION
Reel/Frame 063953/0373 →
Continuity (4)
Continuation
13574425
Provisional Application
61304609
· Feb 15, 2010
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