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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0104728 (1998-06-25) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 803 인용 특허 : 27 |
A clamping force mechanism and its method of use with electrosurgery allow a user to seal and/or join patient's particular vascular tissue; the mechanism is elongate with user and patient ends. An actuator is at the user end and the effectors are at the patient end. Each effector has a face of an ar
A clamping force mechanism and its method of use with electrosurgery allow a user to seal and/or join patient's particular vascular tissue; the mechanism is elongate with user and patient ends. An actuator is at the user end and the effectors are at the patient end. Each effector has a face of an area to contact the particular vascular tissue. A lost motion connection transfers user actuation to the effectors to hold a predetermined clamping force during electrosurgical tissue sealing. A yielding member in the loss motion connection clamps the particular tissue between the faces with a predetermined force. The yielding member is a spring, slip clutch or hydraulic coupling possibly near the actuator. An active electrode is carried on one end effector and a return electrode contacts the tissue so an electrosurgical energy supply connected thereacross delivers energy therebetween. A feedback circuit responds to parameters of energy delivered to tissue. A temperature sensor on one face and an impedance monitor respond to energy delivered. A control applies energy to held tissue to seal and/or join it. The method transfers user actuation of the effectors with the lost motion connection, 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 so the opposing faces clamp the particular tissue therebetween with the force from the spring via a transfer rod or by the hydraulic coupling or the slip clutch for a range of pressure.
[ What is claimed is:] [1.] A method for surgically clamping and sealing tissue, comprising the steps of:providing an instrument comprising:an elongated support having a user end and a patient end;an actuator for operation by a user;a pair of end effectors proximal to said patient end wherein at lea
[ What is claimed is:] [1.] A method for surgically clamping and sealing tissue, comprising the steps of:providing an instrument comprising:an elongated support having a user end and a patient end;an actuator for operation by a user;a pair of end effectors proximal to said patient end wherein at least one of said pair of end effectors is attached to said actuator to control the relative motion between said pair of effectors;a lost motion connection between at least one of said pair of end effectors and said actuator;an active electrode disposed on one of said pair of end effectors;a return electrode adapted for contact with the tissue and which completes an electrical circuit between said active and return electrodes;an electrosurgical energy supply for transmitting electrosurgical energy through said electrical circuit and across said active and return electrodes when the tissue is clamped between said pair of end effectors; anda control associated with said electrosurgical energy supply to regulate an amount of electrosurgical energy to the tissue in response to the application of the predetermined clamping force;positioning the tissue between said pair of end effectors;transferring user manipulation of said actuator to at least one of said pairs of end effectors through said lost motion connection so as to maintain a predetermined clamping force irrespective of the user manipulation during sealing of the tissue between said pair of end effectors;maintaining a predetermined clamping force during sealing of the tissue between said pair of end effectors; andapplying electrosurgical energy for sealing the held tissue in response to the application of the predetermined clamping force to the tissue between said pair of effectors.
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