Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5372596 | Apparatus for leakage control and method for its use Apparatus and method find leakage due to tissue load or transients and has active and return electrodes for RF energy sensed by transformers for a circuit that finds leakage at more than two thousand times per second or a frequency dependent on the phase ... | 12/13/1994 |
| 5364392 | Microwave ablation catheter system with impedance matching tuner and method A tuner system for a microwave power supply used in an ablation catheter system is disclosed. The tuner system includes a tuner arranged to facilitate matching the impedance of a power generator side portion of the catheter system with the impedance of a ... | 11/15/1994 |
| 5342357 | Fluid cooled electrosurgical cauterization system An electrosurgical probe is disclosed which provides the ability to both cut and cauterize tissue. The probe includes at least one cauterization electrode mounted upon a distal portion of the electrode and adapted to deliver electrosurgical energy to tiss... | 08/30/1994 |
| 5341807 | Ablation catheter positioning system A multi-electrode cardiac catheter has pairs of electrodes connected to sensing circuitry to produce a differential signal. The sensing output is sharply defined and self-normalizing. Preferably a catheter ablation tip electrode is an electrode of one pai... | 08/30/1994 |
| 5318563 | Bipolar RF generator An electrosurgical bipolar RF generator apparatus includes a bipolar electrode. An aperiodic sequence of uniform width bursts of a high frequency signal are electronically synthesized. Substantially identical decaying amplitude envelopes are impressed on ... | 06/07/1994 |
| 5318516 | Radio frequency sensor for automatic smoke evacuator system for a surgical laser and/or electrical apparatus and method therefor A laser surgical apparatus having an improved smoke evacuator system and method is provided whereby the radio frequency energy associated with the generation of RF from the electrosurgical unit (ESU) or a laser surgical apparatus is detected by a radio fr... | 06/07/1994 |
| 5267997 | High-frequency electrosurgery apparatus with limitation of effective value of current flowing through a surgical instrument A high-frequency electrosurgery apparatus for cutting and/or coagulating biological tissues that may have a number of operating modes is described. As control panel on which one or more parameters of the high-frequency output of the apparatus can be set. ... | 12/07/1993 |
| 5190517 | Electrosurgical and ultrasonic surgical system An electrical circuit system which provides electrical energy to a surgical apparatus having ultrasonic fragmentation, aspiration and electrosurgical coagulation capabilities, which system also includes an impedance sensing network and automatic feedback ... | 03/02/1993 |
| 5167658 | Method and apparatus for electrosurgical measurement An improved method and apparatus for measuring the total energy delivered to a patient during an electrosurgical procedure. An electrosurgical target (the patient) is positioned atop a dispersive plate constituting a first electrode. The patient is includ... | 12/01/1992 |
| 5160334 | Electrosurgical generator and suction apparatus An electrosurgical unit which combines an electrosurgical power generator and a filtered smoke removal system into a single compact instrument comprising an electrosurgical generator module and a smoke removal module. The electrosurgical generator module ... | 11/03/1992 |
| 5133711 | Electric surgical high-frequency instrument This invention relates to an electric surgical HF instrument having an HF urce (12) to which an inactive electrode (18) for tissue contact (17) and an active electrode (16) for surgical treatment can be connected via electrical conductors (15, 15'). The c... | 07/28/1992 |
| 5108391 | High-frequency generator for tissue cutting and for coagulating in high-frequency surgery The invention relates to a high-frequency generator with automatic power control for tissue cutting and for coagulating in high-frequency surgery. The power control in the "cutting" mode of operation is effected with an arc control system for keeping the ... | 04/28/1992 |
| 5078714 | Method and apparatus for placement of a probe in the body and the medical procedure for guiding and locating a catheter or probe in the body A method and apparatus for guiding a physician in the placement of a probe in the body. The method of placement of a catheter or probe in the body through a multi-directional walled path departing from a straight line involving inserting an insulated cath... | 01/07/1992 |
| 4969885 | High frequency surgery device for cutting and/or coagulating biologic tissue A high frequency AC electro-surgery apparatus is equipped with an automatic regulation loop for controlling the output voltage (Ua) rather than the output power. An electrically isolating coupling in the form of an isolation transformer (5) is ... | 11/13/1990 |
| 4727874 | Electrosurgical generator with high-frequency pulse width modulated feedback power control A pulse width modulation technique regulates the output power of each cycle of a radio frequency surgical signal of an electrosurgical generator. The delivered power of the surgical signal is determined by multiplying the sensed current and the sensed vol... | 03/01/1988 |
| 4658819 | Electrosurgical generator An electrosurgical generator having a source of electrosurgical energy connected to a patient and including control circuitry for decreasing the output power from the source with increasing patient impedance, the rate of power decrease being substantially... | 04/21/1987 |
| 4617927 | Electrosurgical unit An electrosurgical unit having a power source, and an amplifier which includes a bipolar transistor and a FET in series with the amplifier load. In cut and blend modes, the power output of the unit is controlled by a variable voltage applied to the base t... | 10/21/1986 |
| 4574801 | Electrosurgical unit with regulated output An electrosurgical unit having feedforward power regulation. In one embodiment there is an amplifier which produces a pulse modulated electrosurgical output signal. A microprocessor calculates an adjusted pulse width (duty cycle) just sufficient to accoun... | 03/11/1986 |
| 4569345 | High output electrosurgical unit An electrosurgical unit including voltage control circuitry which operates to limit the voltage at the electrosurgical electrodes when the unit is not in coagulation mode. The electrosurgical unit includes sensing circuitry for providing a signal represen... | 02/11/1986 |
| 4474179 | Method and apparatus for the high frequency coagulation of protein for surgical purposes In the arrangement according to the invention for the high frequency coagulation of protein, in particular for surgical purposes, the protein impedance is continuously determined during application of high frequency power and the differential quotient for... | 10/02/1984 |
| 4301801 | Electrosurge failsafe system An electrosurge generator, which is energized by a power supply to produce n output voltage of a desired level, includes a failsafe system at its output to prevent any excessive high DC voltage output which may result from a failure in the electrosurge gen... | 11/24/1981 |
| 4281373 | High frequency voltage generator This high frequency voltage generator which may be used particularly in surgery for supplying an electric bistoury, comprises a power oscillator operating an output transformer. A chopping supply is placed in the direct control chain of the power oscillat... | 07/28/1981 |
| 4271837 | Electrosurgical apparatus The present invention relates to an electrosurgical cutting device for the cutting and/or coagulation of tissue with RF current. A cutting electrode and a patient plate are connectable to the terminals of a RF generator. A control system, using a conditio... | 06/09/1981 |
| 4209018 | Tissue coagulation apparatus and method A device and system for the cutting and/or coagulation of human tissue with the use of high frequency currents. This invention is used to cut materials similar to the human tissue which can emit steam or gassy products when sufficiently heated. It control... | 06/24/1980 |
| 4196734 | Combined electrosurgery/cautery system and method A combined electrosurgery/cautery system wherein a common heater/electrode element is employed to effect electrosurgical and cautery procedures.... | 04/08/1980 |
| 4188927 | Multiple source electrosurgical generator A multiple source electrosurgical generator wherein one of the sources may be optimized for desiccation of the patient's tissue, another source may be optimized for fulguration thereof and a third source may be optimized for cutting. All sources operate i... | 02/19/1980 |
| 4126137 | Electrosurgical unit An electrosurgical unit having a feedback control circuit for providing control of the power amplifier of the unit so power delivered to tissue presented between the active and return electrodes of the unit will be substantially constant over the range of... | 11/21/1978 |
| 4114623 | Cutting and coagulation apparatus for surgery A device and system for the cutting and/or coagulation of human tissue with the use of high frequency currents. This invention is used to cut materials similar to the human tissue which can emit steam or gassy products when sufficiently heated. It control... | 09/19/1978 |
| 4092986 | Constant output electrosurgical unit An electrosurgical unit which provides a voltage output to a load. An oscator in the unit produces the output of a given frequency. A switching circuit coupled to the oscillator provides an unmodulated RF carrier from the oscillator for use in cutting pr... | 06/06/1978 |
| 4057063 | Device for sterilization by transuterine tube coagulation A device for sterilizing human females by transuterine fallopian tube coagulation wherein the substantial increase in impedance of the tissues during coagulation is used to signal for termination of treatment.... | 11/08/1977 |
| 3964487 | Uncomplicated load-adapting electrosurgical cutting generator A high frequency signal for cutting human tissue is generated by common-emitter configured oscillator circuit that is adapted to maintain the cutting signal relatively constant in spite of impedance variations in the load caused by variations in the condu... | 06/22/1976 |
| 3963030 | Signal generating device and method for producing coagulation electrosurgical current A signal generating device and method for producing an RF output signal regulated in power and of decaying amplitude suitable for use in an electrosurgical generator for surgical coagulation purposes. The device includes a circuit tuned to a predetermined... | 06/15/1976 |
