Abstract: A laparascopic incision closure device comprised of an ejector housing having a handpiece trigger that is activated by compression and is biased to return to an initial position. The handpiece is so carried by the ejector housing that compression and retraction of the handpiece sequentially advances a flexible wire push-rod to eject a T-bar suture and retracts the flexible wire push-rod to index a ratchet which feeds the T-bar portion of a T-bar suture into the longitudinal bore of a needle carried by the ejector housing. The strand portion of the T-bar suture trails the T-bar portion through the longitudinal bore. Multiple T-bar sutures are axially spaced and detachably carried on a suture spline by spline mount tabs connected to the T-bar portion of the T-bar sutures and are stored in the interior of the ejector housing for quick and easy placement through fascia on opposite sides of a wound.

Abstract: A laparascopic incision closure device comprised of an ejector housing having finger holding rings and a thumb ring attached to a plunger shaft and plunger for sequentially ejecting T-bar sutures into a trocar site incision through a needle. T-bar sutures are ejected by operation of a trigger mounted in the ejector housing for quick and easy operation to eject a T-bar through fascia adjacent to a trocar site incision. Multiple T-bar sutures are stored in the interior of the ejector housing and needle for quick and easy placement through fascia on opposite sides of a wound. In the preferred embodiment the device is constructed of a disposable plastic material with sutures being formed of an absorbable material.

Abstract: An improved microbeam holder to focus and control a laser beam to direct it to a target for laser beam microsurgery. The holder has a simple specular mirror holder and joystick mechanism for ease in laser beam direction. The laser beam holder allows focusing the laser beam during surgery. An attachment is included to hold the microbeam holder on the microscope apparatus being used for surgery and allows the microbeam holder to be rotated relative to the microscope. An adjustable hand rest is provided to allow ease in control of the joystick mechanism for laser beam direction.

Abstract: A device which incorporates three functions in one instrument necessary during surgical operations for transfer of laser energy to and viewing the site of the surgery. The fiber optic cable used to transfer the laser energy and the aspirator and irrigator tubes are all contained in a parallel in the fiber diverter. In addition the end of the fiber diverter can be bent at angles to the longitudinal axis of the instrument in order to work around other surgical apparatus involved in the operation thus avoiding the need to make other incisions in the patient. The amount of bend in the tip is controlled at the handle end of the instrument away from the surgical site. When bent the device can irrigate and aspirate at the same time laser cutting is being performed.

Abstract: A solid state switching circuit using a capacitive feedback that creates a positive differential. This positive differential overcomes any half-wave operation of the solid state switches caused by lack of symmetry in its gating circuit.

Abstract: A fuel burner primary control with a pre-purge and extended ignition function has been disclosed. The system has been disclosed as an oil burner which utilizes a voltage regulator to insure that adequate power is supplied to the device and with a time delay on the application of potential to the ignition and oil source to allow for a pre-purge interval. The ignition source is also time delayed to insure a stable flame before the ignition is deenergized.

Abstract: A flame responsive control circuit means has been disclosed which responds to the flame in a burner. The response is to the sudden rate of change of the resistance or impedance of a photocell upon the loss of flame. The two embodiments disclosed both utilize a rate of change sensing means to determine that a loss of flame has occurred. If a loss occurs, ignition is reinstituted immediately and the system either operates normally or locks itself out in a safety shut down.