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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0887716 (1978-03-17) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 729 인용 특허 : 1 |
Apparatus and method for applying aspiration, irrigation, medication and ultrasonic power and dwell time to biotissue for surgery and treatment wherein the pressure for both aspirating and irrigating is precisely and accurately maintained by the use of a differential valve and a control reservoir wh
Apparatus and method for applying aspiration, irrigation, medication and ultrasonic power and dwell time to biotissue for surgery and treatment wherein the pressure for both aspirating and irrigating is precisely and accurately maintained by the use of a differential valve and a control reservoir which is generally much larger than the biotissue cavity to be operated on and wherein the pressures for irrigation, aspiration, medication and the application of the amplitude and dwell time of ultrasonic energy can be precisely controlled, externally, to the patient.
A vacuum leak valve apparatus comprising, a vacuum pump, a medical handpiece, a first conduit connected between said vacuum pump and said medical handpiece, a second conduit with one end connected to said first conduit between said vacuum pump and said medical handpiece, a double leak valve having a
A vacuum leak valve apparatus comprising, a vacuum pump, a medical handpiece, a first conduit connected between said vacuum pump and said medical handpiece, a second conduit with one end connected to said first conduit between said vacuum pump and said medical handpiece, a double leak valve having a central longitudinal passage connected to the second end of said second conduit, said double leak valve comprising a hollow body member with a center portion having a pair of shoulders, said second end of said second conduit connected to said hollow body member so as to be in fluid communication with said central longitudinal passage, a first spring with one end mounted against one of said shoulders, a first ball mounted against the other end of said first spring, a first stem with a passage therethrough to atmosphere and a first valve seat against which said first ball rests threadedly attached to said hollow body member to set a limiting first pressure, a second spring with one end mounted against the other of said shoulders, a second ball mounted against the other end of said second spring, a second stem with a passage therethrough to atmosphere and a second valve seat against which said second ball rests formed on said stem and said stem threadedly attached to said hollow body member to set a limiting second pressure so as to assure that the pressure within said second conduit and said handpiece does not exceed either said first or second limiting pressures.
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