Low-power tissue sealing device and method
First Claim
1. A surgical system for fusing tissue, the surgical system comprising:
- an electrosurgical generator capable of delivering electrosurgical power;
a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer the electrosurgical power from the electrosurgical generator to a distal end of the surgical instrument, wherein the distal end of the surgical instrument has a pair of end effectors; and
a power control circuit configured to control the delivery of radio frequency energy to the tissue disposed between the pair of end effectors;
wherein the power control circuit is further configured to;
deliver the radio frequency energy at a non-pulsing power to the tissue for a period of time of 3 seconds or less, wherein the period of time is measured from the beginning of the application of the non-pulsing power and continues through fusing of the tissue, wherein the output current is held under 2 Amperes RMS, and the output voltage is held under 100 Volts RMS, the non-pulsing power further applying a current density of 0.1 Amperes per square millimeter or less to the tissue, the non-pulsing power further causing the tissue to begin to desiccate and to fuse within the period of time.
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0 Petitions
Accused Products
Abstract
A surgical system and method for fusing tissue are disclosed. The system has an electrosurgical generator capable of delivering electrosurgical power, a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer the electrosurgical power from the electrosurgical generator to a distal end of the surgical instrument, and a power control circuit for controlling the delivery of radio frequency energy to the tissue in contact with the distal end of the surgical instrument. The surgical system is configured to: deliver the radio frequency energy at a non-pulsing power to the tissue for a period of time of 3 seconds or less, wherein the non-pulsing power is held constant, the output current is held under 2 Amperes RMS, and the output voltage is held under 100 Volts RMS, the non-pulsing power further causing the tissue to begin to desiccate and to fuse within the period of time.
334 Citations
42 Claims
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1. A surgical system for fusing tissue, the surgical system comprising:
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an electrosurgical generator capable of delivering electrosurgical power; a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer the electrosurgical power from the electrosurgical generator to a distal end of the surgical instrument, wherein the distal end of the surgical instrument has a pair of end effectors; and a power control circuit configured to control the delivery of radio frequency energy to the tissue disposed between the pair of end effectors; wherein the power control circuit is further configured to;
deliver the radio frequency energy at a non-pulsing power to the tissue for a period of time of 3 seconds or less, wherein the period of time is measured from the beginning of the application of the non-pulsing power and continues through fusing of the tissue, wherein the output current is held under 2 Amperes RMS, and the output voltage is held under 100 Volts RMS, the non-pulsing power further applying a current density of 0.1 Amperes per square millimeter or less to the tissue, the non-pulsing power further causing the tissue to begin to desiccate and to fuse within the period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 41, 42)
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15. A power control system for delivering radio frequency energy to a surgical instrument, the power control system comprising:
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a power supply for delivering an output voltage and an output current to a distal end of the surgical instrument, wherein the distal end of the surgical instrument has a pair of end effectors; a sensing circuit for detecting parameters indicative of an impedance of a tissue portion being fused; and a power sequencing module for automatically sequencing an electrosurgical power delivered to the surgical instrument; wherein the power sequencing module is adapted to; apply non-pulsing power to the tissue portion disposed between the pair of end effectors for a period of time of 3 seconds or less, wherein the period of time is measured from beginning application of the application of the non-pulsing power through the beginning of a desiccation of the tissue portion and through a drying out and the fusing of the tissue portion, and wherein the output current is held under 2 Amperes RMS, and- the output voltage is held under 100 Volts RMS, and the output current applies a current density of 0.1 Amperes per square millimeter or less to the tissue portion being fused. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A surgical system for fusing tissue, the surgical system comprising:
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an electrosurgical generator capable of delivering electrosurgical power; a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer electrosurgical power from the electrosurgical generator to a distal end of the surgical instrument, wherein the distal end of the surgical instrument has a pair of end effectors; and a power control circuit configured to control the delivery of radio frequency energy to the tissue disposed between the pair of end effectors;
wherein the power control circuit is further configured todeliver a radio frequency energy to the tissue, the radio frequency energy having a non-pulsed power having an output current and an output voltage; and apply the non-pulsed power to the tissue for a period of time while the output current is held under 2 Amperes RMS, and the output voltage is held under 100 Volts RMS, wherein the period of time is measured from beginning of the application of the non-pulsed power through fusing of the tissue, and the non-pulsed power applies a current density of 0.1 Amperes per square millimeter or less to the tissue, and the non-pulsed power further causes the tissue to begin to desiccate within the period of time, wherein the period of time is 3 seconds or less. - View Dependent Claims (25, 26, 27)
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28. A method of fusing tissue, the method comprising:
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providing a surgical system having an electrosurgical generator and a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer electrosurgical power from the electrosurgical generator to a distal end of the surgical instrument, wherein the distal end of the surgical instrument has a pair of end effectors; positioning the tissue between the pair of end effectors; delivering a radio frequency energy to the tissue, the radio frequency energy having a non-pulsed power having an output current and an output voltage; and applying the non-pulsed power to the tissue for a period of time, the output current is held under 2 Amperes RMS, and the output voltage is held under 100 Volts RMS, wherein the period of time is measured from the beginning of the application of the non-pulsed power and continues through fusing of the tissue, and the non-pulsed power causes the tissue to begin to desiccate within the period of time, wherein the period of time is 3 seconds or less, and wherein the non-pulsed power applies a current density of 0.1 Amperes per square millimeter or less to the tissue. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification