Electrosurgery unit and instrument

Claim 2

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined output, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means and pre-amplifier means for supplying at all times a constant amplitude output thereto, said power supply means normally providing for coagUlating operations a supply voltage in the form of a fully rectified sine wave to said output amplifier means, cutting circuit means electrically connected with said power supply means for coacting therewith to provide an output of constant amplitude, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized.

Claim 3

The combination of claim 1 and wherein said oscillator means includes a crystal for providing a stable high-frequency output signal therefrom.

Claim 4

The combination of claim 1 and wherein a power-level control means is connected with the input of said pre-amplifier means for acting on the output from said oscillator means for converting a portion of the signal therefrom into direct current power and for then dissipating the latter power.

Claim 5

The combination of claim 1 and wherein a foot switch is operatively connected with said oscillator circuit means for turning the latter on and off.

Claim 6

The combination of claim 1 and wherein said output coupler means includes a coaxial cable of predetermined length and a probe connected electrically thereto and terminating in an operating tip, and a neon lamp connected electrically with the probe and having a capacitive relation with respect to said coaxial cable for glowing when the voltage at the probe tip exceeds the breakdown voltage of said lamp.

Claim 7

The combination of claim 5 and wherein said probe includes a selected operating tip and a chuck removably connecting said selected operating tip thereto, so that one operating tip may be exchanged for another.

Claim 8

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined output, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, a power-level control means connected with the input of said pre-amplifier means for acting on the output from said oscillator means for converting a portion of the signal therefrom into direct current power and for then dissipating the latter power, said power-level control means including a transistor connected as a diode, a capacitor, and a potentiometer, said capacitor and potentiometer being electrically connected in parallel with each other and in series with the transistor between ground and the input of said pre-amplifier means, and said transistor and capacitor converting the signal from said oscillator means into direct current power and said potentiometer dissipating the direct current power, with the extent of signal power dissipation being determined by the setting of said potentiometer.

Claim 9

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined output, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, a power-level control means connected with the input of said pre-amplifier means for acting on the output from said oscillator means for converting a portion of the signal therefrom into direct current power and for then dissipating the latter power, said power-level control means including a transistor connected as a diode, a capacitor, and a potentiometer, said capacitor and potentiometer being electrically connected in parallel with each other and in series with the transistor between ground and the input of said pre-amplifier means, and said transistor and capacitor converting the signal from said oscillator means into direct current power and said potentiometer dissipating the direct current power, with the extent of signal power dissipation being determined by the setting of said potentiometer.

Claim 10

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined outPut, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, said cutting circuit means including a filtering capacitor and a diode connected between the latter capacitor and said power supply means for preventing filtering by said filtering capacitor, said selecting means bridging said diode when set for cutting operations to render said filtering capacitor operative.

Claim 11

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined outPut, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, said cutting circuit means including a filtering capacitor and a diode connected between the latter capacitor and said power supply means for preventing filtering by said filtering capacitor, said selecting means bridging said diode when set for cutting operations to render said filtering capacitor operative.

Claim 12

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined output, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, said output coupler means including a coaxial cable of predetermined length and a probe connected electrically thereto and terminating in an operating tip, and a neon lamp connected electrically with the probe and having a capacitive relation with respect to said coaxial cable for glowing when the voltage at the probe tip exceeds the breakdown voltage of said lamp, said coaxial cable including an inner conductor, a dielectric surrounding said conductor, and a shield surrounding said dielectric and covered by insulation, said neon lamp having one lead connected to said probe and another lead terminating in the region of said shield for providing the capacitive relationship therewith.

Claim 13

In an electrosurgery unit, oscillator means for providing an output of a given frequency, pre-amplifier means receiving said output from said oscillator means and providing an amplified signal therefrom, output amplifier means receiving said signal from said pre-amplifier means and providing therefrom a predetermined output, output coupler means receiving said output from said output amplifier means for coupling the latter output to a high-impedance load, power supply means electrically connected with said oscillator means, pre-amplifier means and output amplifier means for supplying a voltage thereto, cutting circuit means electrically connected with said power supply means, and selecting means coacting with said power supply means and cutting circuit means for selectively operating said power supply means either without said cutting circuit means for coagulating operations or with said cutting circuit means for cutting operations, said oscillator means, pre-amplifier means, and output amplifier means being fully transistorized, said output coupler means including a coaxial cable of predetermined length and a probe connected electrically thereto and terminating in an operating tip, and a neon lamp connected electrically with the probe and having a capacitive relation with respect to said coaxial cable for glowing when the voltage at the probe tip exceeds the breakdown voltage of said lamp, said coaxial cable including an inner conductor, a dielectric surrounding said conductor, and a shield surrounding said dielectric and covered by insulation, said neon lamp having one lead connected to said probe and another lead terminating in the region of said shield for providing the capacitive relationship therewith.

Claim 14

An instrument for carrying out electrosurgical operations, comprising an elongated coaxial cable having at one end a means for connecting the cable to a suitable source, a probe electrically connected with the opposite end of said cable, said probe carrying an operating tip, and a neon lamp carried by said probe for providing a visible signal when said lamp glows, said lamp being electrically connected with said probe and having a capacitive relationship with respect to said cable for glowing when the voltage at said tip exceeds the breakdown voltage of said lamp, said coaxial cable including an inner conductor, a dielectric surrounding the latter conductor, a shield surrounding the dielectric and insulation surrounding the shield, said conductor being electrically connected with said probe and one lead of said neon lamp also being electrically connected with said probe, the other lead of said neon lamp being situated in the vicinity of said shield to have a capacitive relationship therewith.

Claim 15

An instrument for carrying out electrosurgical operations, comprising an elongated coaxial cable having at one end a means for connecting the cable to a suitable source, a probe electrically connected with the opposite end of said cable, said probe carrying an operating tip, and a neon lamp carried by said probe for providing a visible signal when said lamp glows, said lamp being electrically connected with said probe and having a capacitive relationship with respect to said cable for glowing when the voltage at said tip exceeds the breakdown voltage of said lamp, said coaxial cable including an inner conductor, a dielectric surrounding the latter conductor, a shield surrounding the dielectric and insulation surrounding the shield, said conductor being electrically connected with said probe and one lead of said neon lamp also being electrically connected with said probe, the other lead of said neon lamp being situated in the vicinity of said shield to have a capacitive relationship therewith.