[특허]Method and apparatus for heating during cryosurgery

[미국특허] Method and apparatus for heating during cryosurgery 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/36
출원번호	US-0936958 (1997-09-25)
발명자 / 주소	Rabin Yoed Julian Thomas Benjamin Wolmark Norman
출원인 / 주소	Allegheny-Singer Research Institute
대리인 / 주소	Schwartz
인용정보	피인용 횟수 : 65 인용 특허 : 4

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The system includes a mechanism for freezing tissue in a patient. Additionally, the system includes a mechanism for heating other tissue near the tissue being frozen by the freezing mechanism such that essentially only desired region is frozen by the freezing mechanism and heat from the heating mechanism prevents the other tissue from being frozen. The heating mechanism is disposed adjacent to but separate and apart from the freezing mechanism. Alternatively, the mechanism for heating can be used with tissue already frozen by the freezing mechanism. A method for performing cryosurgery on a patient. The method includes the steps of inserting a cryoprobe into a patient. Next, there is the step of placing a cryoheater in contact with the patient adjacent the cryoprobe. Then, there is the step of activating the cryoprobe and the cryoheater so the cryoprobe freezes desired tissue in the patient and the cryoheater heats other tissue around the desired tissue so the other tissue is not frozen by the cryoprobe. Alternatively, there can be the step of activating the cryoheater after the cryoprobe has frozen the desired tissue to thaw the frozen tissue.

대표청구항 ▼

[ What is claimed is:] [1.] A cryoheater for insertion into a patient comprising:a shell, the shell has a tip which is pointed;a heating mechanism within the shell, the heating mechanism includes an electrical resistor disposed in the shell, the heating mechanism includes a control mechanism which provides a desired electrical power to the electrical resistor, the control mechanism includes a controller which controls the amount of electrical power provided to the electrical resistor, the heating mechanism includes a "+" terminal in connection with the electrical resistor and a "-" terminal in connection with the electrical resistor so electrical current flows only in or through the shell but not in the patient, the heating mechanism includes electrical insulation material disposed in the shell between the electrical resistor and the shell, the controller controls the temperature of the shell by controlling the amount of electrical power provided to the electrical resistor in accordance with a desired temperature forcing function which defines the temperature of the shell over time, the control mechanism includes a temperature unit connected to the sensor for reading temperature signals from the sensor and producing a temperature control signal, said controller providing electrical power to the electrical resistor corresponding to the difference between said forcing function and the temperature control signal; wherein the shell is made of electrically conductive material and has a connector extending from an end opposite the tip, said connector being the "-" terminal; and wherein the electrical resistor is connected to the tip so electrical current flows through the resistor, along the shell and to the connector;a sensor which determines the temperature of the shell, said sensor adjacent to said shell.

이 특허에 인용된 특허 (4) 인용/피인용 타임라인 분석

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이 특허를 인용한 특허 (65) 인용/피인용 타임라인 분석

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[미국특허] Method and apparatus for heating during cryosurgery 원문보기

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[미국특허] Method and apparatus for heating during cryosurgery 원문보기

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