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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：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：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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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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Patent Agency Ranking
公开(公告)号：DE19701328A1
公开(公告)日：1997-07-24
申请号：DE19701328
申请日：1997-01-16
Applicant: VALLEYLAB INC
Inventor： LANDS MICHAEL J , PODRACKY JAMES J , RYAN THOMAS P , SCHMALTZ DALE F
Abstract: The rinsing device (10) is used in conjunction with a suction tube (11) and a container holding the rinsing fluid. The device further comprises a funnel section (12) with a widened inlet (15) at one end connected via a channel (17) to a narrow outlet (16). In a chamber (18) within the funnel section is a projecting piece (19) which acts as a valve to close the inlet from the outlet. A port (20) is located in the projecting piece and a cover (28) is arranged proximally to it over the inlet of the funnel. The cover has an inlet for the rinsing medium and a channel (31) for the suction tube. A lip type valve assembly in the projecting piece acts to control fluid flow through the device. The device is assembled in stages from discreet components.
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公开(公告)号：CA2195610A1
公开(公告)日：1997-07-24
申请号：CA2195610
申请日：1997-01-21
Applicant: VALLEYLAB INC
Inventor： LANDS MICHAEL J , PODRACKY JAMES J , RYAN THOMAS P , SCHMALTZ DALE F
Abstract: A valve and irrigator 10 used with a suction tube 11 has an elongate funnel 12 with an axis through an enlarged entrance 15 and an opposed extended exit duct 16 of a flexible elastomer. A flow passage 17 through the elongate funnel 12 connects the entrance to the exit permitting fluid communication. A web 19 across and near the enlarged entrance 15 sealingly separates that from the exit. The web 19 and the elongate funnel 12 are made of silicone elastomer and are adhesively adhered to together. A portal 20 in the web 19 passes therethrough along the axis and is circular in shape to surround in fluid tight engagement the suction tube 11. A lid 28, proximally of the web 19 on the enlarged entrance 15, has an inlet 29 for irrigation and a pass through 30 for the tube; the lid 28 closes the enlarged entrance 15 forming a chamber 31 between the web 19 and the lid 28. A slit 23 within the web 19, near the portal 20 and spaced from the axis is in the form of a closed mouth 24 composed of a pair of sealing lips. Normally the pair of lips 25 are together but are able to separate and define a passageway 26 for fluid flow through the web 19. A peripheral bump 27 is radially disposed relative to the slit 23 and is located on the entrance in position to align flexure force therethrough and toward the axis. A method of using the valve and irrigator 10 with the suction tube 11 has steps including locating an elongate funnel 12 along the axis with the entrance thereon. Positioning the exit on the elongate funnel 12 opposite the entrance and along the axis is a step. Merging the exit with the entrance is step. A step is permitting fluid communication through the flow passage 17 between the entrance and exit. Sealingly separating the entrance and exit with the web 19 is a step. The step of passing the portal 20 through the web 19 along the axis so it surrounds tube therethrough. A method for making the valve and irrigator 10 has steps of locating the web 19 near the entrance, passing through the web 19 the portal 20 and slit 23.
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公开(公告)号：CA2228436A1
公开(公告)日：1997-03-27
申请号：CA2228436
申请日：1996-08-12
Applicant: VALLEYLAB INC
Inventor： KENNEDY JENIFER S , LUKIANOW S WADE , BUYSSE STEVEN P , LANDS MICHAEL J , RYAN THOMAS P , LOEFFLER DONALD R
Abstract: A clamping force mechanism (10) and its method of use with electrosurgery allow a user to seal and/or joint patient's particular vascular tissue; the mechanism is elongate with user and patient ends (14). An actuator (15) is at the user end (13) and the effectors are at the patient end (14). Each effector has a face of an area to contact the particular vascular tissue. A lost motion connection (18) transfers user actuation to the effectors to hold a predetermined clamping force during electrosurgical tissue sealing. A yielding member (19) in the loss motion connection clamps the particular tissue between the faces with a predetermined force. The yielding member (19) is a spring (20), slip clutch (36) or hydraulic coupling possibly near the actuator (15). An active electrode is carried on one end effector and a return electrode (24) contacts the tissue so an electrosurgical energy supply (25) connected thereacross delivers energy therebetween. A feedback circuit (27) responds to parameters of energy delivered to tissue. A temperature sensor (28) on one face and an impedance monitor (29) respond to energy delivered. A control (30) applies energy to held tissue to seal and/or join it. The method transfers user actuation of the effectors with the lost motion connection (18), maintains clamping force while sealing and applying electrosurgical energy to seal and/or join held tissue. Energy is applied to a temperature or an impedance. The method shifts the yielding member (19) so the opposing faces (17) clamp the particular tissue therebetween with the force from the spring (20), via a transfer rod or by the hydraulic coupling or the slip clutch (36) for a range of pressure.
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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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