Irrigation and aspiration devices and methods

• US 20090281482A1
• Filed: 04/27/2009
• Published: 11/12/2009
• Est. Priority Date: 11/06/2006
• Status: Active Grant

• Current Assignee: Aardvark Medical, Inc.
• Original Assignee: Aadvark Medical LLC
• Inventors: Treadwell, Richard, Lovette, James M., Slone, Clinton N., King, Thomas, Baker, Peter Christensen, Strasser, Michael J.
• Granted Patent: US 8,414,521 B2
• Time in Patent Office: Days
• US Class Current: 604/28
• CPC Class Codes: A61B 2017/246 for cleaning of the nose
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/772 operating alternately
• CPC Class Codes: A61M 2205/82 Internal energy supply devices
• CPC Class Codes: A61M 2210/0618 Nose

Abstract

Irrigation and/or aspiration devices and methods may be configured to aspirate and irrigate alone, sequentially, or concurrently. The devices and methods may provide a base with a removable head, and adapted for partial or complete separation of the irrigation and aspiration functions. The devices and methods can be configured to aspirate and/or irrigate the nasal and sinus cavities. The devices and methods may be manually and/or automatically controlled. The devices and methods may include removable, and/or replaceable, and/or refillable, and easily cleanable reservoirs for aspirant and irrigant. The device head and/or aspirant reservoir may comprise a diagnostic device, i.e., test device and/or container after use of the devices and methods.

Claims

1. A system for irrigation and aspiration of a body orifice, the system comprising:

a head, the head adapted to contain a predetermined amount of irrigation fluid in an irrigation reservoir, and the head containing an aspiration reservoir adapted to contain a predetermined amount of aspirated fluid,

a body, the body releasibly coupled to the head and containing pumping means to draw fluid into the aspiration reservoir,

the system defining a volume of about 200 cc to about 400 cc and sized and configured to be portable and operably held in a user'"'"'s hand, and

the system adapted to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min.

2. The system according to claim 1:

further adapted to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min for a period of about one second to about 30 minutes.

3. The system according to claim 1:

further including a power source to provide power to the pumping means.

4. The system according to claim 3:

further adapted to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min at a power consumption of about 5 watts to about 15 watts.

5. The system according to claim 3:

wherein the power source comprises a capacity of about 100 mAh to about 1000 mAh.

6. A system for irrigation and aspiration of a body orifice, the system comprising:

a head, the head adapted to contain a predetermined amount of irrigation fluid in an irrigation reservoir, and the head containing an aspiration reservoir adapted to contain a predetermined amount of aspired fluid,

a body, the body releasibly coupled to the head and containing pumping means to draw fluid into the aspiration reservoir,

the system defining a volume of about 200 cc to about 400 cc and sized and configured to be portable and operably held in a user'"'"'s hand, and

the system adapted to produce an aspiration pressure of about 50 mmHg to about 200 mmHg.

7. The system according to claim 6:

further including a power source to provide power to the pumping means.

8. The system according to claim 7:

further adapted to produce an aspiration pressure of about 50 mmHg to about 200 mmHg at a power consumption of about 5 watts to about 15 watts.

9. A system for irrigation and aspiration of a body orifice, the system comprising:

a head, the head adapted to contain a predetermined amount of irrigation fluid in an irrigation reservoir, and the head containing an aspiration reservoir adapted to contain a predetermined amount of aspirated fluid,

a body, the body releasibly coupled to the head and containing pumping means to draw fluid into the aspiration reservoir,

the system defining a volume of about 200 cc to about 400 cc and sized and configured to be portable and operably held in a user'"'"'s hand,

the system adapted to produce an aspiration pressure of about 50 mmHg to about 200 mmHg, and

the system adapted to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min.

10. The system according to claim 9:

further including a power source to provide power to the pumping means.

11. The system according to claim 10:

wherein the system is further adapted to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min at a power consumption of about 5 watts to about 15 watts.

12. The system according to claim 10:

wherein the power source comprises a capacity of about 100 mAh to about 1000 mAh.

13. The system according to claim 10:

wherein the power source comprises compressed gas.

14. The system according to claim 9:

wherein the pumping means comprises a double diaphragm pump.

15. The system according to claim 14:

wherein at least one diaphragm of the double diaphragm pump has a cross section comprising a generally M shape, the M shape adapted to increase the flow per stroke.

16. The system according to claim 14:

wherein at least one diaphragm of the double diaphragm pump is sandwiched between a diaphragm arm and a diaphragm plate to improve the pump efficiency by pushing a majority of the air out and pulling a majority of the air in for each stroke.

17. The system according to claim 16:

wherein the diaphragm comprises a diameter D and the diaphragm arm comprises a height H, such that the ration of D/H is between about 2/1 to about 10/1.

18. The system according to claim 9:

wherein the pumping means is selected from the group, consisting of AC powered pump, DC powered pump, compressed gas, stored energy, venturi port, a syringe, manual pump, a flexible component, a squeezable component, a pushable component, a trigger, a piston pump, a blower, a turbine, a fan, a linear pump, a centrifugal pump, a reciprocating pump, a diaphragm pump, a rotary vane pump, and combinations thereof.

19. A method comprising:

providing an irrigation and aspiration device, the device comprising

a removable and replaceable head, the head comprising a housing,

an irrigant reservoir within the housing, the irrigant reservoir adapted to contain irrigation fluid,

an aspirant reservoir within the housing, the aspirant reservoir adapted to contain aspirated fluid,

a barrier means adapted to retain aspirated liquid in the aspirant reservoir and allow gas to pass out of the aspirant reservoir,

at least one nozzle extending from the housing,

a body, the body adapted to releasibly couple to the housing,

the body including pumping means adapted to draw fluid into the aspirant reservoir, and pumping means adapted to expel irrigation fluid from the irrigant reservoir,

an interface region, the interface region comprising at least one non-fluid flow component and at least one gas flow component, the interface region coupling the head to the body, and

the irrigation and aspiration device defining a volume of about 200 cc to about 400 cc and sized and configured to be portable and operably held in a user'"'"'s hand,

positioning the nozzle on or in an orifice, operating the irrigation and aspiration device to activate the pumping means to draw fluid from the orifice, through the nozzle, and into the aspirant reservoir, and

operating the irrigation and aspiration device to produce an aspiration pressure of about 50 mmHg to about 200 mmHg.

20. The method according to claim 19:

further including operating the irrigation and aspiration device to produce an aspiration pressure of about 50 mmHg to about 200 mmHg at a power consumption of about 5 watts to about 15 watts.

21. The method according to claim 19:

wherein the pumping means adapted to draw fluid into the aspirant reservoir comprises a double diaphragm pump.

22. The method according to claim 21:

wherein at least one diaphragm of the double diaphragm pump has a cross section comprising a generally M shape, the M shape adapted to increase the flow per stroke.

23. The method according to claim 21:

wherein at least one diaphragm of the double diaphragm pump is sandwiched between a diaphragm arm and a diaphragm plate to improve the pump efficiency by pushing a majority of the air out and pulling a majority of the air in for each stroke.

24. The method according to claim 23:

wherein the diaphragm comprises a diameter D and the diaphragm arm comprises a height H, such that the ration of D/H is between about 2/1 to about 10/1.

25. The method according to claim 19:

further including operating the irrigation and aspiration device to produce an incoming fluid volume of about 5,000 cc/min to about 20,000 cc/min for a period of about 1 second to about 30 minutes.

26. The method according to claim 19:

further including operating the irrigation and aspiration device to simultaneously provide irrigating and aspirating.