1. A unitary mechanical injector-vitrector hand tool comprising:
a housing body having a proximal end and a distal end;
a variable volume cavity in the housing body for establishing a negative pressure;
a needle connected to the proximal end of the housing body, the needle having a central bore extending therethrough and an aperture extending into the central bore from a radially outer surface;
an inner reciprocal cutter fitted in the central bore of the needle and having a cutting edge adapted for travel across the aperture;
a first manually actuatable lever pivotably mounted to the housing body and coupled in driving relationship with the reciprocal cutter; and
a valve assembly operatively positioned between the needle and the variable volume cavity and arranged to open to apply the negative pressure to the needle central bore when the reciprocal cutter travels across the aperture.
2. The hand tool of claim 1 and including a pressurized source of fluid and a conduit coupling the source of fluid through the central bore of the needle.
3. The hand tool of claim 2 and including a second manually operable lever pivotally mounted to the housing body and operably associated with the conduit for controlling the flow of fluid through the conduit.
4. The hand tool of claim 3 wherein the second manually operable lever includes a protrusion for engaging the conduit and a spring for urging the protrusion into engagement with the conduit, the conduit being flexible so as to be crimped by engagement with the protrusion to prevent the flow of fluid therethrough.
5. The hand tool of claim 1 wherein the variable volume cavity comprises a tubular opening extending from the distal end of the housing body and a spring loaded plunger seated in the opening, the plunger being urged in a direction to increase the volume of the cavity so as to create the negative pressure therein.
6. The hand tool of claim 1 wherein the variable volume cavity comprises a closed cavity formed between an end wall at the distal end of the housing body and a flexible membrane attached within the housing body spaced from the end wall, the flexible membrane being coupled to the first lever so as to be moved to increase the volume of the variable volume cavity when the lever actuates the reciprocal cutter to create a negative pressure therein.
7. The hand tool of claim 6 and including a flexible tube coupling the closed cavity to the central bore of the needle.
8. The hand tool of claim 7 and including a pair of one-way valves operatively associated with the closed cavity, one of the one-way valves being coupled in fluid flow relationship with the flexible tube so as to allow flow from the tube into the closed cavity, another of the one-way valves being coupled in fluid flow relationship with the closed cavity so as to allow fluid flow out of the closed cavity when the cavity volume is decreased.
9. A sutureless intraocular manually operable surgical tool for removing material from an eye of a patient and replacing removed material with other fluid comprising;
(a) a housing body having a proximal end and a distal end;
(b) a hollow needle coupled to said proximal end of said housing, wherein said needle is of a size sufficient to fit through an opening in the eye small enough to heal without sutures, said needle having a sidewall defining a longitudinal bore, said sidewall being provided with an aperture;
(c) an inner cutter having a cutting edge telescopically received in said longitudinal bore of said needle and adapted for travel of said cutting edge across said aperture;
(d) a pivoting lever having a first arm extending outward of the housing body and a second arm extending into the housing body, said second arm being drivingly coupled to said inner cutter for effecting reciprocating motion of said inner cutter upon manual movement of said first arm;
(f) a suction tube provided in operable communication with said longitudinal bore;
(g) an injection tube provided in operable communication with said longitudinal bore; and
(h) valve means operably couple to each of said suction tube and said injection tube to control the application of suction to said longitudinal bore and the injection of fluid into said longitudinal bore.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A quick release vise, comprising:
a first jaw;
a second jaw moveable relative to the first jaw;
a threaded shaft rotatably fixed to the second jaw; and
a shaft receiver fixed relative to the first jaw, the shaft receiver comprising a boss defining a first channel, and a boss cover moveable relative to the boss and defining a second channel, wherein the channels cooperatively define an at least partially threaded shaft-receiving bore.
2. The quick release vise of claim 1, wherein the second channel comprises a threaded surface for engaging the threaded shaft.
3. The quick release vise of claim 2, wherein the first channel comprises a smooth surface.
4. The quick release vise of claim 1, wherein the boss cover is pivotable relative to the boss between a first position wherein threads of the shaft engage threads within the shaft-receiving bore, and a second position wherein the threads of the shaft disengage from the threads within the shaft-receiving bore.
5. The quick release vise of claim 4, wherein the boss cover is biased toward the first position.
6. The quick release vise of claim 5, including a spring for biasing the boss cover toward the first position.
7. The quick release vise of claim 6, wherein the spring extends from the boss cover to the boss.
8. The quick release vise of claim 5, including an actuator for selectively moving the boss cover from the first position to the second position.
9. The quick release vise of claim 8, wherein the actuator comprises a pin that engages the boss cover.
10. The quick release vise of claim 9, wherein the pin is slidably supported by the first jaw.
11. The quick release vise of claim 10, wherein the pin is biased away from engagement with the boss cover, but is selectively moveable into engagement with the boss cover.
12. The quick release vise of claim 11, including a spring for biasing the pin away from engagement with the boss cover.
13. The quick release vise of claim 1, wherein the second jaw includes an arm that slidably extends through the first jaw.
14. The quick release vise of claim 13, wherein the threaded shaft is substantially coextensive with the arm of the second jaw.
15. The quick release vise of claim 13, wherein the shaft receiver is attached to the first jaw.
16. The quick release vise of claim 13, wherein the arm slides past the shaft receiver.
17. The quick release vise of claim 16, wherein the receiver is substantially positioned within the arm, and wherein the arm is disposed substantially within the first jaw.
18. The quick release vise of claim 17, including a pin slidable relative to the first jaw, wherein the arm comprises a slot and the pin is selectively movable into engagement with the boss cover through the slot.
19. The quick release vise of claim 18, including a button fixed relative to the pin, wherein the button is positioned outside the first jaw.
20. The quick release vise of claim 18, wherein the boss cover comprises a chamfer, and the pin is selectively moveable into engagement with the chamfer.