Suction device for surgical instruments

1. A surgical instrument comprising:

an input port configured to receive a flow of matter;

a suction port configured to couple with a suction source having a proximal end and a distal end;

a suction lumen that couples the input port to the suction port; and

one or more adjustable intake ports included at a nozzle in fluid communication with the suction lumen,

a suction control configured to control a force of suction at the input port by adjusting the adjustable intake ports, wherein the suction control comprises an actuatable member configured to extend and retract the nozzle in order upon actuation to selectively adjust a ratio of liquids, solids or gasses suctioned by the surgical instrument.

2. The instrument of claim 1 , further comprising an instrument retainer configured to couple the surgical instrument to the suction source and a gasket disposed within the suction source and configured to provide a seal between the suction source and the surgical instrument.

3. The instrument of claim 1 , wherein the one or more intake ports are disposed between the input port and the suction port, are disposed on the input port, or a combination thereof.

4. The instrument of claim 1 , wherein the suction control comprises a sliding member configured to be adjustable by a user.

5. The instrument of claim 1 , wherein the suction control comprises detents configured to locate the suction control in user controlled positions.

6. The instrument of claim 1 , wherein the suction control is configured to locate the suction control in a user controlled position using friction.

7. The instrument of claim 1 , wherein the suction control is integral to the gasket.

8. The instrument of claim 2 , wherein the gasket comprises a flexible membrane configured to permit a user to manipulate the flexible membrane to clear an obstruction.

9. The instrument of claim 1 , further comprising a positive pressure operated fluid accelerator disposed near the distal end of the suction device, configured to take advantage of the Coanda effect to generate suction near the input port.

10. The instrument of claim 1 , wherein the one or more intake ports disposed between the input port and the suction port are configured to take advantage of the Venturi effect.

11. The instrument of claim 1 , wherein the suction lumen comprises a narrowing between the input port and the suction port.

12. The instrument of claim 11 , wherein the one or more intake ports are disposed between the input port and the suction port, and are fluidically coupled to the suction lumen at the narrowing.

13. The instrument of claim 12 , wherein the one or more intake ports disposed between the input port and the suction port are positioned a) circumferentially around the suction lumen at the narrowing, b) in series along the suction lumen at the narrowing or c) a combination thereof.

14. The instrument of claim 11 , wherein the one or more intake ports are disposed between the input port and the suction port, and are fluidically coupled to the suction lumen at a point of maximum pressure differential of the flow of matter within the suction lumen.

15. The instrument of claim 11 , wherein the one or more intake ports are disposed between the input port and the suction port, and are fluidically coupled to the suction lumen at a narrowest point within the suction lumen.

16. The instrument of claim 1 , wherein a shape of the suction lumen enhances a laminar profile of the flow of matter through the suction lumen.

17. The instrument of claim 16 , wherein the shape is an edge of the one or more intake ports in fluidic communication with the suction lumen, wherein the edge forms an angle of less than 90 degrees relative to the body.