[특허]Electrosurgical conductive gas stream equipment

Electrosurgical conductive gas stream equipment 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/39
출원번호	US-0838375 (1992-02-19)
발명자 / 주소	Trenconsky Robert P. (Elizabeth CO) Bertrand Carol A. (Cambridge MA) Weiss Robert A. (Waconia MN)
출원인 / 주소	Birtcher Medical Systems, Inc. (Irvine CA 02)
인용정보	피인용 횟수 : 53 인용 특허 : 0

초록 ▼

An electrosugrical unit for conducting a predetermined ionizable gas in a jet stream to the tissue at a predetermined flow rate sufficient to clear natural fluids from the tissue and to substantially expose the tissue stroma and for exposing the gas to an electrical radio frequency energy to ionize the gas in conductive pathways in the gas jet stream. The unit includes a nozzle which is releasably connected to a handle for easy manipulation by a surgeon with the nozzle including means for supporting an electrode in an optimal position for initiation of the ionization of the gas. Also, a connecting system is disclosed for connecting the hose on which the handle is mounted to a gas delivery apparatus and supply or electrical energy which permits the hose to rotate while maintaining a positive hermetic seal to prevent the hose from kinking during use by a surgeon.

대표청구항 ▼

An electrosurgical unit for creating an eschar in the stroma of a tissue comprising in combination: means for conducting a preselected gas in a jet stream to the tissue at a predetermined flow rate, means for transferring electrical energy at a preselected radio frequency range in ionized conductive pathways at a predetermined power level within the gas jet stream in an electrical circuit which includes the tissue to create the eschar, said means for conducting gas and said means for transferring electrical energy including a flexible hose, connector means having first and second connectable mating portions for connecting the hose to a source of gas and to a source of electrical energy, and nozzle means for delivering the gas jet stream and electrical energy to the tissue, said hose having at least one hose passageway therethrough for conducting gas and an electrical conductor means for conducting electrical energy therealong, a rear end of said hose comprising the first mating portion of said connector means, the first mating portion exposing a rear end of the electrical conductor means, the first mating portion including resilient material defining a [circular edge]sealing surface, the second mating portion of said connector means including a generally cylindrical element for contacting the [circular edge]sealing surface to establish a hermetic seal between said [circular edge]sealing surface and the cylindrical element when the first and second mating portions are connected, the second mating portion including an electrical connector means for connecting to said source of electrical energy and operative for contacting the rear end of said electrical conductor means when the first and second mating portions are connected, a front end of said hose comprising a handle having a front end to which said nozzle means is releasably connected, a nozzle electrical connector means connected to said electrical conductor means at the front end of said handle, a resilient boot on the handle which has a portion that overlaps the front end of the handle where said nozzle means connects, the operative connection of said nozzle means and said handle compressing the overlapping portion of the resilient boot to establish a hermetic seal between the nozzle means and the handle, said nozzle means including a nozzle passageway therethrough for directing gas from the hose passageway into the jet stream and also including an elongated electrode disposed in the nozzle passageway and having one end contacting the nozzle electrical connector means of the handle when the nozzle means is connected to the handle, and support means for supporting the elongated electrode within the nozzle passageway along a minority of the length of the electrode.

이 특허를 인용한 특허 (53)

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