Abstract: A peristaltic pump having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The pump head rollers are mounted radially from the axis of rotation of the pump motor and compress the elastomeric flow channels against the rigid substrate.

Abstract: A peristaltic pump having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The pump head rollers are mounted radially from the axis of rotation of the pump motor and compress the elastomeric flow channels against the rigid substrate.

Abstract: A peristaltic pump having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The pump head rollers are mounted radially from the axis of rotation of the pump motor and compress the elastomeric flow channels against the rigid substrate.

Abstract: A microsurgical cutting instrument is disclosed which is provided with a cutting probe assembly wherein the inner and outer cutting members thereof are swaged and the inner cutting member is bent towards the outer cutting member, so as to maintain a preselected relationship of the cutting edges.

Abstract: A surgical cutting instrument such as for use in intraocular surgery having a handpiece with an elongate probe extending forward from it. The probe has an elongate stationary outer cutter with a port at its tip and an elongate inner cutter with a cutting surface coaxially disposed therein. The interior of the inner cutter communicates with a vacuum source. A spring and diaphragm assembly in the handpiece and powered by a low pressure pump causes the inner cutter to rapidly reciprocate axially in the outer cutter, and body material, such as vitreous material, drawn in through the port by the vacuum source is thereby chopped by the cutting surface and aspirated out of the patient's body through the handpiece. A large adjustment nut on the handpiece allows the size of the port to be easily adjusted. Irrigation fluid can be provided at the surgical site through an infusion cap which is adjustable both longitudinally and rotatably on the handpiece.

Abstract: A surgical cutting instrument such as for use in intraocular surgery having a handpiece with an elongate probe extending foward from it. The probe has an elongate stationary outer cutter with a port at its tip and an elongate inner cutter with a cutting surface coaxially disposed therein. The interior of the inner cutter communicates with a vacuum source. A spring and diaphragm assembly in the handpiece and powered by a low pressure pump causes the inner cutter to rapidly reciprocate axially in the outer cutter, and body material, such as vitreous material, drawn in through the port by the vacuum source is thereby chopped by the cutting surface and aspirated out of the patient's body through the handpiece. A large adjustment nut on the handpiece allows the size of the port to be easily adjusted. Irrigation fluid can be provided at the surgical site through an infusion cap which is adjustable both longitudinally and rotatably on the handpiece.

Abstract: A surgical suction cassette for use with a microsurgical apparatus having a surgical handpiece connected by tubing with a control cabinet contains a tank to receive aspirated material from the microsurgical site, fluid connections for the tubes providing suction, pressure and irrigation fluid to the handpiece, fluid connections for connecting sources of pressure, vacuum and vent within the cabinet, fluid connection for an external source of irrigation fluid, and internal tubing providing connections between the connections to the handpiece and the connections to the cabinet. Solenoid actuated occluders in the cabinet compress the tubing in the cassette to turn the various fluid streams on and off. The cassette is provided with a drain for automatically removing the contents without changing the cassette. A latch hook, centrally located between the fluid connections to the cabinet holds the cassette in the cabinet when in use.