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公开(公告)号：JPH1024049A
公开(公告)日：1998-01-27
申请号：JP8494797
申请日：1997-04-03
Applicant: VALLEYLAB INC , UNIV ILLINOIS
Inventor： LAMBRECHT GREGORY H , PHILPOTT MICHAEL L , RYAN THOMAS P , SCHMALTZ DALE F , SELLERS JR ORLANDO
Abstract: PROBLEM TO BE SOLVED: To provide a device for electric surgical operation for treating myoma, or more concretely, a multi-electrode device for necrotizing a mass quantity of leiomyoma of the uterus by use for one time. SOLUTION: A bipolar type electric myoma breaking device 10 for a surgical operation is provided with a thin and long shaft 14 of such a size as to be engaged in a cannula for a peritoneoscope operation to a myoma of the uterus which is also known as fibroma. The myoma breaking device 10 is designed to break a mass quantity of tissue by use for one time. A terminal end 16 of the shaft 14 has at least three electrodes 17 of such a design as to get in contact with the tissue. In a substitutional mode of execution of the myoma breaking device 10, four, six, or eight electrodes are provided. A power generator for a surgical operation is connected to the myoma breaking device 10 to provide a high frequency current to the electrodes 17. At least one electrode is connected to a first bipolar type output terminal of the power generator, and at least one of the other electrodes is connected to a second bipolar type output terminal.
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公开(公告)号：JPH1043198A
公开(公告)日：1998-02-17
申请号：JP12382397
申请日：1997-05-14
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS P
Abstract: PROBLEM TO BE SOLVED: To provide a device for executing a sterilization treatment through the neck of the uterus which causes embolyzation by exactly imparting a high- frequency energy and heating the blood in the blood vessel up to a temp. controlled for the purpose of thrombus formation until the blood vessel is hermetically closed. SOLUTION: The device 20 for causing embolyzation by way of a catheter by executing contraception operation through the neck of the uterus by a bipolar RF catheter 21 controlled to form a thermally injured part 22 in the uterne tube 23 or thrombolic blood vessel has the catheter 21 having a patient end 24 slender along its axial line. A connector disposed at one end of the catheter 21 on the side opposite to the patient end 24 has a terminal 6 for RF impartation and monitor and is formed to such a shape that a surgeon can make operation while the catheter is arranged and withdrawn.
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公开(公告)号：GB2313062B
公开(公告)日：2000-08-30
申请号：GB9708729
申请日：1997-04-29
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS P
Abstract: An apparatus for transcervical sterilization or transcatheter embolization with a controlled bipolar RF catheter for creating thermal lesions in the fallopian tubes or thrombosing vessels has a catheter elongate along an axis thereof with a patient end. The catheter is circular and sized for transcervical insertion into the fallopian tube or transcatheter vessel insertion, respectively. A connector on an end of the catheter opposite the patient end has the terminations for RF and monitoring and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes on the patient end are placed so each electrode is spaced from another with each circumscribing the catheter. A mucosa or thrombus sensor responsive to applied RF energy passing between the two or more bipolar electrodes determines the condition of the transmural formation of a lesion or the thrombus between each of the electrodes. The sensor is a temperature sensor positioned in the space between the electrodes measures the change in mucosal layer temperature or the thrombus during the application of RF energy. An RF generator electrically coupled to the electrodes and the sensor is alternately a phase detector in circuit with the coupling determines reactance of tissue as an indicator of lag or lead of the voltage wave form or current wave form delivered or is an impedance responsive circuit positioned in the RF generator to determine voltage and current delivered so a calculator finds impedance delivered for finding initial electrode contact with the tissue and for measuring the change in mucosal layer. The temperature sensor connects to an RF generator with control circuitry regulating delivery to a temperature range. A method for sterilization has the steps of inserting a catheter, delivering RF and monitoring the effect on the mucosa or thrombus, circumscribing the catheter with two or more bipolar electrodes, each of the electrodes spaced from one another and passing RF energy therebetween.
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公开(公告)号：DE19719934A1
公开(公告)日：1997-11-20
申请号：DE19719934
申请日：1997-05-13
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS P
IPC: A61B17/42 , A61B18/12 , A61B18/14 , A61F6/20 , A61N7/02 , A61B17/39 , A61M25/00 , G01N27/10 , G01N27/14
Abstract: An apparatus for transcervical sterilization or transcatheter embolization with a controlled bipolar RF catheter for creating thermal lesions in the fallopian tubes or thrombosing vessels has a catheter elongate along an axis thereof with a patient end. The catheter is circular and sized for transcervical insertion into the fallopian tube or transcatheter vessel insertion, respectively. A connector on an end of the catheter opposite the patient end has the terminations for RF and monitoring and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes on the patient end are placed so each electrode is spaced from another with each circumscribing the catheter. A mucosa or thrombus sensor responsive to applied RF energy passing between the two or more bipolar electrodes determines the condition of the transmural formation of a lesion or the thrombus between each of the electrodes. The sensor is a temperature sensor positioned in the space between the electrodes measures the change in mucosal layer temperature or the thrombus during the application of RF energy. An RF generator electrically coupled to the electrodes and the sensor is alternately a phase detector in circuit with the coupling determines reactance of tissue as an indicator of lag or lead of the voltage wave form or current wave form delivered or is an impedance responsive circuit positioned in the RF generator to determine voltage and current delivered so a calculator finds impedance delivered for finding initial electrode contact with the tissue and for measuring the change in mucosal layer. The temperature sensor connects to an RF generator with control circuitry regulating delivery to a temperature range. A method for sterilization has the steps of inserting a catheter, delivering RF and monitoring the effect on the mucosa or thrombus, circumscribing the catheter with two or more bipolar electrodes, each of the electrodes spaced from one another and passing RF energy therebetween.
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公开(公告)号：DE19713797A1
公开(公告)日：1997-10-09
申请号：DE19713797
申请日：1997-04-03
Applicant: VALLEYLAB INC , UNIV ILLINOIS
Inventor： LAMBRECHT GREGORY H , PHILPOTT MICHAEL L , RYAN THOMAS P , SCHMALTZ DALE F , SELLERS JUN ORLANDO
Abstract: The instrument includes an extended rigid shaft (14) with a proximal end (15) and a distal end (16), an inner chamber and an outer diameter of 10 mm or less. Also at least three electrodes (17), are arranged movably in the inner chamber. At least one of the electrodes is connected with the first output connection, and at least one other electrode is connected with the second output connection. An operating system (19) is fitted in vicinity of the proximal end (15) of the shaft (14), and is mechanically connected with the electrodes (17), in order that the electrodes travel out and back in relation to the distal end (16). An electric switch makes an electrical circuit through the electrodes and between the first and second output connections.
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Patent Agency Ranking
公开(公告)号：CA2204566A1
公开(公告)日：1997-11-14
申请号：CA2204566
申请日：1997-05-06
Applicant: VALLEYLAB INC
Inventor： RYAN THOMAS P , LAMBRECHT GREGORY H
Abstract: An apparatus (20) for transcervical sterilization or transcatheter embolizat ion with a controlled bipolar RF catheter (21) for creating thermal lesions (22) in t he fallopian tubes (23) or thrombosing vessels has a catheter (21) elongate along an axis there of with a patient end (24). The catheter (21) is circular and sized for transcervical insertio n into the fallopian tube or transcatheter vessel insertion, respectively. A connector (25) on an end of the catheter (21) opposite the patient end (24) has the terminations (26) for RF and monitoring and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes (29, 30 and 31)on the patient end (24) are pl aced so each electrode is spaced from another with each circumscribing the catheter (21). A mucosa or thrombus sensor responsive to applied RF energy passing between the two or m ore bipolar electrodes (29, 30 and 31)determines the condition of the transmural formati on of a lesion or the thrombus between each of the electrodes. The sensor is a temperature sensor positioned in the space (34) between the electrodes measures the change in m ucosal layer temperature or the thrombus during the application of RF energy. An RF gener ator (27) electrically coupled to the electrodes and the sensor is alternately a phase detector(35) in circuit with the coupling determines reactance of tissue as an indicator of lag or lead of the voltage wave form or current wave form delivered or is an impedance responsi ve circuit (39) positioned in the RF generator (27) to determine voltage and current de livered so a calculator finds impedance delivered for finding initial electrode contact w ith the tissue and for measuring the change in mucosal layer. A blunt tip at the patient end (2 4) facilitates introduction into the tube or vessel to avoid perforation. The temperature s ensor connects to an RF generator (27) with control circuitry regulating delivery to a temp erature range. A proportional controller regulates the RF energy delivery to control temper ature rise time and to maintain the temperature near the mid point of the temperature range. A method for sterilization has the steps of inserting a catheter (21), delivering RF and monitoring the effect on the mucosa or thrombus, circumscribing the catheter (21) with two or more bipolar electrodes, each of the electrodes spaced from one another and passi ng RF energy therebetween.
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公开(公告)号：FR2746628A1
公开(公告)日：1997-10-03
申请号：FR9703681
申请日：1997-03-26
Applicant: VALLEYLAB INC
Inventor： CABAK JAMES , CLASEMAN BRYAN A , LAMBRECHT GREGORY H , WHITT JASON , MAKOWER JOSHUA
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公开(公告)号：CA2204566C
公开(公告)日：2001-07-10
申请号：CA2204566
申请日：1997-05-06
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS P
Abstract: An apparatus (20) for transcervical sterilization or transcatheter embolizat ion with a controlled bipolar RF catheter (21) for creating thermal lesions (22) in t he fallopian tubes (23) or thrombosing vessels has a catheter (21) elongate along an axis there of with a patient end (24). The catheter (21) is circular and sized for transcervical insertio n into the fallopian tube or transcatheter vessel insertion, respectively. A connector (25) on an end of the catheter (21) opposite the patient end (24) has the terminations (26) for RF and monitoring and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes (29, 30 and 31)on the patient end (24) are pl aced so each electrode is spaced from another with each circumscribing the catheter (21). A mucosa or thrombus sensor responsive to applied RF energy passing between the two or m ore bipolar electrodes (29, 30 and 31)determines the condition of the transmural formati on of a lesion or the thrombus between each of the electrodes. The sensor is a temperature sensor positioned in the space (34) between the electrodes measures the change in m ucosal layer temperature or the thrombus during the application of RF energy. An RF gener ator (27) electrically coupled to the electrodes and the sensor is alternately a phase detector(35) in circuit with the coupling determines reactance of tissue as an indicator of lag or lead of the voltage wave form or current wave form delivered or is an impedance responsi ve circuit (39) positioned in the RF generator (27) to determine voltage and current de livered so a calculator finds impedance delivered for finding initial electrode contact w ith the tissue and for measuring the change in mucosal layer. A blunt tip at the patient end (2 4) facilitates introduction into the tube or vessel to avoid perforation. The temperature s ensor connects to an RF generator (27) with control circuitry regulating delivery to a temp erature range. A proportional controller regulates the RF energy delivery to control temper ature rise time and to maintain the temperature near the mid point of the temperature range. A method for sterilization has the steps of inserting a catheter (21), delivering RF and monitoring the effect on the mucosa or thrombus, circumscribing the catheter (21) with two or more bipolar electrodes, each of the electrodes spaced from one another and passi ng RF energy therebetween.
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公开(公告)号：FR2748648B1
公开(公告)日：2001-07-06
申请号：FR9705848
申请日：1997-05-13
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS
Abstract: An apparatus for transcervical sterilization or transcatheter embolization with a controlled bipolar RF catheter for creating thermal lesions in the fallopian tubes or thrombosing vessels has a catheter elongate along an axis thereof with a patient end. The catheter is circular and sized for transcervical insertion into the fallopian tube or transcatheter vessel insertion, respectively. A connector on an end of the catheter opposite the patient end has the terminations for RF and monitoring and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes on the patient end are placed so each electrode is spaced from another with each circumscribing the catheter. A mucosa or thrombus sensor responsive to applied RF energy passing between the two or more bipolar electrodes determines the condition of the transmural formation of a lesion or the thrombus between each of the electrodes. The sensor is a temperature sensor positioned in the space between the electrodes measures the change in mucosal layer temperature or the thrombus during the application of RF energy. An RF generator electrically coupled to the electrodes and the sensor is alternately a phase detector in circuit with the coupling determines reactance of tissue as an indicator of lag or lead of the voltage wave form or current wave form delivered or is an impedance responsive circuit positioned in the RF generator to determine voltage and current delivered so a calculator finds impedance delivered for finding initial electrode contact with the tissue and for measuring the change in mucosal layer. The temperature sensor connects to an RF generator with control circuitry regulating delivery to a temperature range. A method for sterilization has the steps of inserting a catheter, delivering RF and monitoring the effect on the mucosa or thrombus, circumscribing the catheter with two or more bipolar electrodes, each of the electrodes spaced from one another and passing RF energy therebetween.
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公开(公告)号：GB2313062A
公开(公告)日：1997-11-19
申请号：GB9708729
申请日：1997-04-29
Applicant: VALLEYLAB INC
Inventor： LAMBRECHT GREGORY H , RYAN THOMAS P
Abstract: Apparatus for transcervical sterilization or transcatheter embolization with a controlled bipolar RF catheter for creating thermal lesions in the fallopian tubes or thrombosing vessels, has an elongate catheter 21 with a patient end 24. A connector on the end of the catheter opposite the patient end has terminations 26 for RF and monitoring leads and is shaped for the surgeon to manipulate during placement and withdrawal. Two or more bipolar electrodes 29,30,31 near the patient end 24 are placed so each electrode is spaced from another with each circumscribing the catheter 21. A mucosa or thrombus sensor 32 responsive to temperature and applied RF energy passing between the bipolar electrodes determines the condition of the transmural formation of a lesion or a thrombus between each of the electrodes. Alternatively, the electrodes may be replaced by one or more piezoelectric transducers which act as thermal energy sources by transmitting acoustic waves to adjacent tissue.
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