What is claimed is:
1. An aspiration system that can be coupled to a medical handpiece, comprising:
an aspiration tube;
a vacuum generator adapted to create a vacuum pressure within said aspiration tube; and,
a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube.
2. The aspiration system of claim 1, wherein the vacuum pulses decrease the pressure within said aspiration tube.
3. The aspiration system of claim 1, wherein said pulse generator is coupled to an input device that can be manipulated to vary a repetition rate of the vacuum pulses.
4. The aspiration system of claim 3, wherein said input device is a foot pedal.
5. An medical handpiece, comprising:
a first cannula that has an inner passage which is in fluid communication with a distal opening; and,
a wire that extends across said distal opening.
6. The handpiece of claim 5, further comprising a second cannula that extends over said first cannula.
7. The handpiece of claim 6, wherein said second cannula has a plurality of external teeth.
8. The handpiece of claim 6, wherein said first cannula can be rotated within said second cannula.
9. A tissue removal system, comprising:
a cutter adapted to cut a tissue;
an irrigation handpiece adapted to hold the tissue;
an aspiration system coupled to said cutter; and,
an irrigation system coupled to said irrigation handpiece.
10. The system of claim 9, wherein said aspiration system includes an aspiration tube, a vacuum generator adapted to create a vacuum pressure within said aspiration tube, and a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube.
11. The system of claim 10, wherein the vacuum pulses decrease the pressure within said aspiration tube.
12. The system of claim 10, wherein said pulse generator is coupled to an input device that can be manipulated to vary a repetition rate of the vacuum pulses.
13. The system of claim 12, wherein said input device is a foot pedal.
14. The system of claim 9, wherein said cutter includes a first cannula that has an inner passage in fluid communication with a distal opening, and a wire that extends across said distal opening.
15. The system of claim 14, further comprising a second cannula that extends over said first cannula.
16. The system of claim 15, wherein said second cannula has a plurality of external teeth.
17. The system of claim 15, wherein said first cannula can be rotated within said second cannula.
18. A medical cutter, comprising:
a first cannula that has an inner passage that is in fluid communication with a distal opening;
a wire that extends across said distal opening;
an aspiration tube that is in fluid communication with said inner passage;
a vacuum generator adapted to create a vacuum pressure within said aspiration tube; and,
a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube.
19. The cutter of claim 18, wherein the vacuum pulses decrease the pressure within said aspiration tube.
20. The cutter of claim 18, wherein said pulse generator is coupled to an input device that can be manipulated to vary a repetition rate of the vacuum pulses.
21. The cutter of claim 20, wherein said input device is a foot pedal.
22. The cutter of claim 18, further comprising a second cannula that extends over said first cannula.
23. The cutter of claim 22, wherein said second cannula has a plurality of external teeth.
24. The cutter of claim 22, wherein said first cannula can be rotated within said second cannula.
25. A medical device, comprising:
a first cannula that has an inner passage which is in fluid communication with a distal opening;
a heating element that is coupled to said first cannula; and,
a controller that provides energy to said heating element.
26. The device of claim 25, wherein said heating element is a wire that extends across said distal opening.
27. The device of claim 25, further comprising a second cannula that extends over said first cannula.
28. The device of claim 25, wherein said second cannula has a plurality of external teeth.
29. The device of claim 25, wherein said first cannula can be rotated within said second cannula.
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 method for preparing a beverage from a container containing beverage ingredients by centrifugation of the container in a beverage preparation device;
said container comprising:
an outer wall and an inner wall; each wall having a peripheral portion extending around a central axis (I) and a bottom portion;
a lid covering said outer and inner walls; and forming with said inner wall an inner cavity containing beverage ingredients,
an outer collecting cavity positioned between the outer and inner walls,
beverage outlets or outlet precursors positioned on the peripheral portion of the inner wall,
wherein the method comprises:
supplying liquid in the inner cavity,
rotating the container around its central axis (I) to force liquid through beverage outlets from the inner cavity to the outer cavity under the effect of centrifugal pressure, and
maintaining an overpressure of supplied liquid in the container to enable the beverage to be drained from the outer cavity out of the container.
2. The method of claim 1, further comprising the step of forming beverage outlets from the outlet precursors by effect of the centrifugal forces of liquid acting against the peripheral portion of the inner wall during the rotation of the container.
3. Method according to The method of claim 2, wherein the outlet outlets are formed by tearing a membrane of the inner wall to uncover premade openings covered by said membrane or by tearing pre-weakened areas of the inner wall or by expanding pre-cuts formed in the inner wall.
4. The method of claim 1, further comprising the step of draining the beverage through a beverage outlet provided in the bottom portion of the outer wall along said central axis (I) while maintaining said overpressure.
5. The method of claim 1, wherein the overpressure of supplied liquid is of at least 300 mbar, preferably at least 500 mbar.
6. The method of claim 1, wherein the container is rotated by a rotating holding assembly of the device firmly holding a peripheral flange of the container.
7. The method of claim 1, wherein liquid is supplied in the container through the lid.
8. The method of claim 7, wherein the lid is perforated by a liquid injector of the device.
9. The method of claim 1, wherein beverage is drained directly into a receptacle without contacting the device.
10. The method of claim 9, wherein the bottom portion of the outer wall is unsupported by the device.
11. The method of claim 9, wherein a beverage outlet forms a duct protruding outwardly from the outer wall of the container.