# US 12,178,965 B2 · Local cooling anesthesia device, method of controlling local cooling anesthesia device, and cooling temperature regulator of local cooling anesthesia device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,965 B2 - Document ID: US12178965B2 - Status: Granted - Kind: B2 - Application number: 17/455,628 - Filed: 2021-11-18 - Published: 2022-03-10 - Granted: 2024-12-31 - Earliest claimed: 2016-11-15 - Assignees: RecensMedical, Inc. - Applicants: Recensmedical, Inc. - Inventors: Gun Ho Kim - Web page: https://patentgrep.com/patent/US12178965B2 ## CPC - A61M 19/00: Local anaesthesia (syringes therefor A61M5/00); Hypothermia (A61M5/42 takes precedence; cooling blood in a bypass of the arterial system A61M1/36) - A61B 18/0218: {with open-end cryogenic probe, e.g. for spraying fluid directly on tissue or via a tissue-contacting porous tip} - A61B 90/04: {Protection of tissue around surgical sites against effects of non-mechanical surgery, e.g. laser surgery (protection of eyes against laser radiation A61F9/022)} - A61F 7/00: Heating or cooling appliances for medical or therapeutic treatment of the human body (hyperthermia using electric or magnetic fields or ultrasound A61N) - A61F 7/106: {self-cooling, e.g. using a chemical reaction} - A61M 11/02: operated by air {or other gas} pressure applied to the liquid {or other product} to be sprayed or atomised {(sprayers for horticulture A01G, A01H; killing insects A01M; air humidifying by nozzles F24F6/14, F24F6/18; cooling by spraying F28B, F28C)} - A61N 5/06: using light - A61B 2090/0481: {against EM radiation, e.g. microwave} - A61F 2007/0063: {for cooling} - A61F 2007/0064: {of gas} - A61F 2007/0087: {Hand-held applicators} - A61F 2007/0093: {programmed} - A61F 2007/0095: {with a temperature indicator} - A61M 11/006: {operated by applying mechanical pressure to the liquid to be sprayed or atomised} - A61M 2205/3368: Temperature - A61M 2205/3606: cooled - A61M 2205/366: by liquid heat exchangers - A61M 2205/368: by electromagnetic radiation, e.g. IR waves - A61M 2205/502: User interfaces, e.g. screens or keyboards - A61M 2210/125: Heart - A61M 2230/50: Temperature - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract Disclosed is a local cooling anesthesia device for spraying a coolant on a treatment site. The local cooling anesthesia device includes a housing which forms an outward form and from which the coolant is sprayed and a spraying unit installed in the housing to spray the coolant. The device also includes a cooling temperature regulator connected to the spraying unit to apply thermal energy to the sprayed coolant for temperature regulation and a control unit connected to the cooling temperature regulator to control the cooling temperature regulator. The cooling anesthesia device has functions of measuring and regulating the temperature of the coolant, and thus can apply the coolant to the treatment site within a safe temperature range according to the purpose of treatment, thereby enabling a desired treatment purpose such as local anesthesia to be safely and rapidly accomplished without side effects such as cytostasis. ## Claims ### Claim 1 A local cooling anesthesia device, comprising: a coolant container configured to store a coolant; a nozzle configured to receive the coolant from the coolant container and comprising a nozzle opening configured to generate a sprayed flow of the coolant; a sprayer comprising a spray opening, the sprayer configured to output the sprayed flow from the nozzle on a treatment area through the spray opening; a temperature measurer configured to detect a temperature of the treatment area; and a coolant temperature adjuster comprising a heater configured to adjust a temperature of the sprayed flow flowing through the coolant temperature adjuster, wherein the coolant temperature adjuster is interposed between the nozzle and the sprayer and is in fluid communication with the spray opening of the sprayer and is configured to guide the sprayed flow from the nozzle to the sprayer, and wherein the heater is configured to adjust the temperature of the sprayed flow according to the temperature of the treatment area detected by the temperature measurer such that the temperature of the treatment area reaches a predetermined temperature. ### Claim 2 (depends on 1) The local cooling anesthesia device of claim 1, wherein the coolant temperature adjuster further comprises a plurality of heat dissipating members, and wherein the plurality of heat dissipating members are projected from the heater and configured to disturb at least part of the sprayed flow and provide heat inside the sprayed flow as the sprayed flow passes by an external surface of the heat dissipating members. ### Claim 3 (depends on 2) The local cooling anesthesia device of claim 2, wherein the heater comprises a heat source and a heating plate, wherein the plurality of heat dissipating members are projected inwardly from the heating plate, and wherein the heat source is configured to provide heat energy to the plurality of heat dissipating members through the heating plate arranged between the heat source and the plurality of heat dissipating members. ### Claim 4 (depends on 2) The local cooling anesthesia device of claim 2, wherein the heater includes a first heating plate and a second heating plate facing the first heating plate, and wherein the plurality of heat dissipating members are arranged between the first heating plate and the second heating plate. ### Claim 5 (depends on 1) The local cooling anesthesia device of claim 1, wherein the coolant temperature adjuster further comprises a plurality of heat dissipating members configured to directly contact the sprayed flow of the coolant flowing therethrough. ### Claim 6 (depends on 1) The local cooling anesthesia device of claim 1, wherein the heater is configured to exchange heat with the sprayed flow of the coolant flowing therethrough. ### Claim 7 (depends on 1) The local cooling anesthesia device of claim 1, further comprising: a transfer line connecting the coolant container and the nozzle; and a valve installed on the transfer line, wherein the valve is configured to control a flow rate of the coolant flowing from the coolant container to the nozzle. ### Claim 8 (depends on 1) The local cooling anesthesia device of claim 1, wherein the nozzle opening comprises a hole having a diameter of about 500 micrometer (μm). ### Claim 9 (depends on 1) The local cooling anesthesia device of claim 1, wherein the local cooling anesthesia device further comprises: a first body accommodating the coolant container and a power supply configured to supply power to a controller and extending in a first direction, the controller configured to control the coolant temperature adjuster; and a second body accommodating the nozzle, the coolant temperature adjuster and the sprayer and extending in a second direction that is different from and bent with respect to the first direction, wherein the second body is connected to the first body with an angle such that the local cooling anesthesia device has a bent shape, and wherein the nozzle, the coolant temperature adjuster and the sprayer are arranged in the second direction such that the coolant flows in the coolant temperature adjuster in the second direction that is different from the first direction in which the first body extends. ### Claim 10 (depends on 9) The local cooling anesthesia device of claim 9, wherein an input device electrically connected to the controller is disposed on the first body while a display electrically connected to the controller is disposed on the second body. ### Claim 11 (depends on 1) The local cooling anesthesia device of claim 1, wherein the sprayer is directly connected to the coolant temperature adjuster. ### Claim 12 (depends on 1) The local cooling anesthesia device of claim 1, wherein the sprayer comprises an inlet opposing the spray opening and configured to receive a temperature adjusted sprayed flow from the coolant temperature adjuster, wherein the coolant temperature adjuster comprises a first end configured to receive the sprayed flow from the nozzle and a second end opposing the first end and coupled to the inlet of the sprayer, and wherein a width of the second end is larger than a width of the spray opening. ### Claim 13 (depends on 12) The local cooling anesthesia device of claim 12, wherein the nozzle comprises an outlet configured to output the sprayed flow to the coolant temperature adjuster, and wherein a width of the outlet of the nozzle is larger than the width of the spray opening. ### Claim 14 (depends on 1) The local cooling anesthesia device of claim 1, further comprising a housing accommodating at least the coolant temperature adjuster and the nozzle therein, and wherein at least a portion of the temperature measurer is disposed outside the housing so as to be exposed to the environment. ### Claim 15 (depends on 1) The local cooling anesthesia device of claim 1, further comprising a controller configured to control at least one of the heater or the sprayer, based on comparison of the measured temperature of the treatment area and the temperature of the sprayed flow flowing through the coolant temperature adjuster, so as to adjust at least one of the temperature of the sprayed flow flowing through the coolant temperature adjuster or a spray amount output from the sprayer.