140 results about "Cauterization" patented technology

A surgical device includes a radio-frequency-signal-generation assembly including a radio-frequency-signal-generation circuit operable to generate a radio-frequency signal at an output and adapted to couple to a switch-mode power supply and a surgical handle including an end effector having at least one jaw with at least one electrical contact, the end effector including at least one signal input that electrically connects to the output to provide the radio-frequency signal at the at least one electrical contact.

A bipolar surgical instrument that includes opposing grips that can engage the tissue. A current is delivered from an electrosurgical power source to electrodes disposed on the grips to cauterize the tissue. The electrode configurations provide efficient cauterization of the tissue. In some embodiments, the positive and negative electrodes will be offset from each other to prevent shorting and to provide a thin line of coagulation heating to the gripped tissue. In some embodiments the electrodes are removably coupled to the grips through nonconductive sleeves. In some embodiments, the first electrode is disposed in a groove and the second electrode is disposed on a boss.

A bipolar surgical instrument that includes opposing grips that can engage the tissue. A current is delivered from an electrosurgical power source to electrodes disposed on the grips to cauterize the tissue. The electrode configurations provide efficient cauterization of the tissue. In some embodiments, the positive and negative electrodes will be offset from each other to prevent shorting and to provide a thin line of coagulation heating to the gripped tissue. In some embodiments the electrodes are removably coupled to the grips through nonconductive sleeves. In some embodiments, the first electrode is disposed in a groove and the second electrode is disposed on a boss.

A cordless surgical device includes a modular battery, a radio-frequency signal generating assembly, a surgical handle and an interchangeable circuit casing. The RF signal generating assembly includes RF-signal-generating circuitry, a voltage-control circuit and an external output. The voltage circuit is configured to control an output of the RF-signal-generating circuitry. The handle is configured to support a bipolar end effector having jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle includes leads operable to receive RF signals from the external output and defines an aseptically sealable battery-holding compartment configured to hold the battery. The circuit casing is configured to house the RF signal generating assembly and includes a securing connection adapted to couple the external output of the RF signal generating assembly to the leads. The external output is operable to impart RF signals to the handle when the circuit casing connects to the handle.

A cordless cautery and cutting surgical device includes a modular battery and a surgical handle operable to removably hold the battery thereto. The handle has a cordless radio-frequency-signal-generation assembly and a surgical bipolar end effector having jaws and a cutting blade therebetween. The signal-generation assembly selectively supplies radio-frequency signal to the end effector when powered for electrocautery of tissue between the jaws. The handle defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery. A motor assembly is disposed in the handle and is electrically connected to the battery and / or the signal-generation assembly and is powered and controlled thereby. The motor assembly physically couples to the blade and / or at least one jaw for moving the blade / jaw(s). The second connector part electrically connects the battery to the signal-generation assembly and / or the motor assembly when the battery is removably disposed in the compartment.

A surgical instrument and methods for the treatment of glaucoma are provided. The instrument uses either cauterization, a laser to ablate, sonic or ultrasonic energy to emulsify, or mechanical cutting of a portion of the trabecular meshwork. The instrument may also be provided with irrigation, aspiration, and a footplate. The footplate is used to enter Schlemm's canal, serves as a guide, and also protects Schlemm's canal.

A cordless cautery and cutting surgical device includes a modular battery and a surgical handle operable to removably hold the battery thereto. The handle has a cordless radio-frequency-signal-generation assembly and a surgical bipolar end effector having jaws and a cutting blade therebetween. The signal-generation assembly selectively supplies radio-frequency signal to the end effector when powered for electrocautery of tissue between the jaws. The handle defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery. A motor assembly is disposed in the handle and is electrically connected to the battery and / or the signal-generation assembly and is powered and controlled thereby. The motor assembly physically couples to the blade and / or at least one jaw for moving the blade / jaw(s). The second connector part electrically connects the battery to the signal-generation assembly and / or the motor assembly when the battery is removably disposed in the compartment.

Apparatuses and methods for the treatment of glaucoma are provided. The instrument uses either cauterization, a laser to ablate, sonic or ultrasonic energy to emulsify, or mechanical cutting of a portion of the trabecular meshwork. The instrument may also be provided with irrigation, aspiration, and a footplate. The footplate is used to enter Schlemm's canal, serves as a guide, and also protects Schlemm's canal.

A cordless cautery and cutting surgical device includes a modular battery and a surgical handle. The battery has a cordless radio-frequency-signal-generation assembly generating an output radio-frequency signal and a first selectively removable connector part. The surgical handle has a first handle body portion with a bipolar cautery and cutting end effector. The end effector has jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle has a second body portion connected to the first body portion, defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery, and a second selectively removable connector part operable to removably hold the first connector part thereto. The second connector part has conductors electrically connecting the RF assembly to the bipolar contacts for supplying the radio-frequency signal to the bipolar contacts when the first and second connector parts are removably secured together.

An ultrasonic medical treatment device has a casing, an elongate probe, a transducer assembly, a sheath and at least one electrode member. The probe is mounted to and extends from the casing and has an axis and a free end serving as an operative tip. The transducer assembly is mounted to the casing and is operatively connected to the probe for generating vibrations of at least one ultrasonic frequency in the probe. The sheath surrounds the probe. The electrode member is connectable to an RF voltage source and is mounted at least indirectly to the casing so as to permit relative motion between the electrode member and the probe.

An apparatus is provided for the laparoscopic deployment and positioning of surgical materials, such as mesh. The mesh is applied by at least one extension arm which radiates from a central shaft. Alternate embodiments employ simultaneously and / or individually extended rigid arms, and simultaneously deployed resilient arms. Various methods are also disclosed for attaching the mesh to the abdominal wall once it is deployed by the extension arms. Illustrative attaching methods include staples, low viscosity adhesives, and electro-cauterization.

An ultrasonic surgical instrument includes a shaft having a proximal end and a distal end and a first jaw having a proximal end and a distal end, the distal end of the shaft terminating at the proximal end of the first jaw and the first jaw has an internal trough running from and through the proximal end of the first jaw and terminating at a point prior to the distal end of the first jaw and a surface having a plurality of teeth on either side of the trough and at the distal end of the first jaw. A second jaw has a surface facing the surface of the first jaw and having a plurality of teeth thereat. An ultrasonic waveguide extends beyond the shaft and is slidably engagable with the trough, where the ultrasonic waveguide has a distal end, a proximal end, a top surface portion, and a tissue compressing surface upwardly sloping from the distal end of the ultrasonic waveguide to the proximal end of the ultrasonic waveguide, at least one of the tissue compressing surface and the top surface portion forming a cutting surface and wherein the jaws are operable to compress tissue therebetween and the ultrasonic waveguide is operable to slide within the trough to further compress and cut the compressed tissue as the ultrasonic waveguide moves in a direction from the proximal end of the first jaw to the distal end of the first jaw.

An ultrasonic surgical instrument includes a shaft having a proximal end and a distal end and a first jaw having a proximal end and a distal end, the distal end of the shaft terminating at the proximal end of the first jaw and the first jaw has an internal trough running from and through the proximal end of the first jaw and terminating at a point prior to the distal end of the first jaw and a surface having a plurality of teeth on either side of the trough and at the distal end of the first jaw. A second jaw has a surface facing the surface of the first jaw and having a plurality of teeth thereat. An ultrasonic waveguide extends beyond the shaft and is slidably engagable with the trough, where the ultrasonic waveguide has a distal end, a proximal end, a top surface portion, and a tissue compressing surface upwardly sloping from the distal end of the ultrasonic waveguide to the proximal end of the ultrasonic waveguide, at least one of the tissue compressing surface and the top surface portion forming a cutting surface and wherein the jaws are operable to compress tissue therebetween and the ultrasonic waveguide is operable to slide within the trough to further compress and cut the compressed tissue as the ultrasonic waveguide moves in a direction from the proximal end of the first jaw to the distal end of the first jaw.

A medical cauterization snare includes a tubular member such as a catheter, a rod or wire disposed at least partially inside the tubular member, and a resilient loop of a first size attached to a distal end of the rod or wire. The loop includes a nose on a side of the loop opposite the wire. The loop further includes two loop sections each extending between the wire and the nose. The loop sections are each formed with a respective notch or dent for enabling a use of the loop in a second size smaller than the first size. Positioning the loop relative to the tubular member so that the notches or dents are disposed at a mouth opening of the tubular member generates this secondary deployment configuration.

A surgical device includes a radio-frequency-signal-generation assembly including a radio-frequency-signal-generation circuit operable to generate a radio-frequency signal at an output and adapted to couple to a switch-mode power supply and a surgical handle including an end effector having at least one jaw with at least one electrical contact, the end effector including at least one signal input that electrically connects to the output to provide the radio-frequency signal at the at least one electrical contact.

Method and device for distending a gynecological cavity. According to one embodiment, a mechanical, non-fluid device is used to distend the gynecological cavity. Such devices include, for example, self-expanding members, such as resilient baskets, coils, whisks, prongs, and loops, or mechanically expanded members, such as inflatable balloons, mechanically-expanded cages and loops, and scissor jacks. The device may serve a purpose in addition to distension, such as illumination, imaging, irrigation, drug delivery, resection and cauterization.

A circuit for generating a radio-frequency signal for a surgical device is disclosed. The circuit has a voltage regulator that supplies direct current (DC) voltage, a first MOSFET, a second MOSFET, and a MOSFET driver. The MOSFET driver receives the DC voltage supplied from the voltage regulator and has a local oscillator. The local oscillator switches the first MOSFET and the second MOSFET on and off at a frequency generated by the local oscillator. The circuit further includes a transformer connected to the first and second MOSFETs, having a center tap and a main voltage applied at the center tap, and providing an alternating current (AC) output.

The invention is concerned with cauterizing and resecting tissue. A pair of electrodes are placed on opposed tissue surfaces, and radio frequency power is applied through the electrodes to cauterizing a tissue mass therebetween. After cauterization has been effected, the tissue may be resected along a plane within the cauterized region with minimum or no bleeding. The tissue mass may then be removed.

A medical cauterization snare includes a tubular member such as a catheter, a rod or wire disposed at least partially inside the tubular member, and a resilient loop of a first size attached to a distal end of the rod or wire. The loop includes a nose on a side of the loop opposite the wire. The loop further includes two loop sections each extending between the wire and the nose. The loop sections are each formed with a respective notch or dent for enabling a use of the loop in a second size smaller than the first size. Positioning the loop relative to the tubular member so that the notches or dents are disposed at a mouth opening of the tubular member generates this secondary deployment configuration.

A cordless surgical device includes a modular battery, a radio-frequency signal generating assembly, a surgical handle and an interchangeable circuit casing. The RF signal generating assembly includes RF-signal-generating circuitry, a voltage-control circuit and an external output. The voltage circuit is configured to control an output of the RF-signal-generating circuitry. The handle is configured to support a bipolar end effector having jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle includes leads operable to receive RF signals from the external output and defines an aseptically sealable battery-holding compartment configured to hold the battery. The circuit casing is configured to house the RF signal generating assembly and includes a securing connection adapted to couple the external output of the RF signal generating assembly to the leads. The external output is operable to impart RF signals to the handle when the circuit casing connects to the handle.

An ultrasonic medical treatment device has a casing, an elongate probe, a transducer assembly, a sheath and a plurality of electrode members. The probe is mounted to and extends from the casing and has an axis and a free end serving as an operative tip. The transducer assembly is mounted to the casing and is operatively connected to the probe for generating vibrations of at least one ultrasonic frequency in the probe. The sheath surrounds the probe. The electrode members are connectable to an RF voltage source and are mounted at least indirectly to the casing so as to permit relative motion between the electrode members and the probe.

A medical cauterization snare assembly with a tubular member, an electrically conductive cauterization loop ejectable from a distal end of the tubular member, and a capture pouch also ejectable from the distal end of the tubular member. The pouch is attached to an auxiliary loop which has a size larger than that of the cauterization loop. Alternatively, the tubular member is formed at its distal end with a first port or opening and in a distal end portion with a second port or opening spaced from the first port or opening. The two ports or openings both face in a distal direction (i.e., away from the user). The cauterization loop is alternately ejectable from and retractable into the first port or opening, while the capture pouch is separately ejectable from the second port or opening. Alternatively, the capture pouch is attached to the cauterization loop, to only a proximal portion of the loop to divide the loop's area into a proximal section covered by the pouch and an open or uncovered distal section.

An apparatus and process using a high-power, short-pulsed thulium laser to output infrared laser pulses delivered through an optical fiber, for cutting and ablating biological tissue. In some embodiments, the pulse length is shortened sufficiently to keep inside the stress-confined ablation region of operation. In some embodiments, the pulse is shortened to near the stress-confined ablation region of operation, while being slightly in the thermal-constrained region of operation. In some embodiments, the laser is coupled to a small low —OH optical fiber (˜100 μm diameter). In some embodiments, the device has a pulse duration of about 100 ns for efficient ablation; however in some embodiments, this parameter is adjustable.

A surgical instrument comprises, in accordance with the present invention, an elongate probe, a sleeve, a sleeve extension and at least one cauterization electrode. The probe is an ultrasonic element, serving to convey ultrasonic vibrations (as standing waves) to organic tissues at a surgical site. The probe has a working tip and a longitudinal axis. The sleeve surrounds the probe with the working tip of the probe projecting from a distal or free end of the sleeve. The sleeve extension is disposed at the distal or free end of the sleeve and defines a multiplicity of apertures having respective axes oriented at least substantially parallel to the longitudinal axis. The electrode has a distal or free end removably inserted through one of the apertures.

A surgical generator that may produce a drive signal or signals of particular voltages, currents, and frequencies, e.g. 55,500 cycles per second (Hz). The drive signal or signals may be provided to an ultrasonic surgical device, and specifically to a transducer. In one embodiment, the generator may be configured to produce a drive signal of a particular voltage, current, and / or frequency output signal that can be stepped with high resolution, accuracy, and repeatability. Additionally, the surgical generator may generate a drive signal or signals with output power sufficient to perform bipolar electrosurgery using radio frequency (RF) energy. The drive signal may be provided, for example, to electrodes of the electrosurgical device.; Accordingly, the generator may be configured for therapeutic purposes by applying electrical signals to an ultrasonic transducer or electrical energy to the tissue sufficient for treating the tissue (e.g., cutting, coagulation, cauterization, tissue welding, etc.).

An apparatus and method for causing necrosis of tissue and specifically intended for thermal ablation of the uterine cavity to cauterizing the endometrial tissue. The apparatus includes a liquid-tight, liquid filled system having a distal flexible member; a proximal flexible member; and a catheter joining and providing a liquid path between these distal and proximal members. The apparatus further includes a pressurizable pneumatic chamber into which the proximal flexible member is inserted and a means to controllably heat the contents of the pneumatic chamber. The system operates to: first withdraw substantially all of the liquid into the proximal flexible member contained within the pressurizable pneumatic chamber; second to heat this liquid to a temperature such that it can cause tissue necrosis; and third to force the heated liquid from the proximal flexible member into the distal flexible member where it is maintained for a predetermined time and at a predetermined pressure. Where this distal member has been inserted into a uterine cavity or is otherwise is in contact with living tissue, the presence of the heated liquid results in tissue necrosis and cauterization.