Back to results
US 11,471,660 B2Granted
Vacuum driven suction and irrigation system
AssigneeCovidien LP
InventorsJaroslaw Malkowski, Kenneth Horton, Lau Ow
Life of this patent
Estimating the term…
Abstract
A vacuum assisted suction and irrigation system includes a suction and irrigation wand, an irrigation fluid supply, a vacuum source, and a fluid pump. The vacuum source is connected to a suction valve of the suction and irrigation wand to provide suction within the suction and irrigation wand. The irrigation fluid supply is connected to the suction and irrigation wand via the fluid pump to supply pressurized irrigation fluid to the suction and irrigation wand. The vacuum source is connected to the fluid pump to pressurize the irrigation fluid being delivered to the suction and irrigation wand.
Claims21
A vacuum assisted suction and irrigation system comprising:
- a suction and irrigation wand including a proximal body portion supporting a suction valve and an irrigation valve and a distal body portion defining a fluid channel;
- an irrigation fluid supply connected to the irrigation valve of the suction and irrigation wand, the irrigation valve being actuable to deliver irrigation fluid to the fluid channel of the suction and irrigation wand;
- a vacuum source connected to the suction valve of the suction and irrigation wand, the suction valve being actuable to draw a vacuum within the fluid channel;
- a fluid pump configured to deliver irrigation fluid to the suction and irrigation wand, the vacuum source connected to the fluid pump to pressurize the irrigation fluid being delivered to the suction and irrigation wand, the fluid pump including a first pump chamber and a second pump chamber, the first pump chamber being divided into a first vacuum cavity and a first fluid cavity by a first diaphragm and the second pump chamber being divided into second vacuum cavity and a second fluid cavity by a second diaphragm, the first diaphragm supporting a first piston and the second diaphragm supporting a second piston, the first piston coupled to the second piston by a piston shaft, the fluid pump including a vacuum chamber and an atmosphere channel, the vacuum chamber communicating with the vacuum source and the atmosphere channel communicating with atmosphere;
- and
- a vacuum valve assembly movable from a first position in which the first vacuum cavity communicates with the vacuum chamber and the second vacuum cavity is sealed from the vacuum chamber and a second position in which the second vacuum cavity communicates with the vacuum chamber and the first vacuum cavity is sealed from the vacuum chamber, wherein the first and second pistons are movable into engagement with the vacuum valve assembly to move the vacuum valve assembly between the first and second positions.
3 more elements
A fluid pump comprising:
- a body defining a first pump chamber, a second pump chamber, a vacuum chamber, and an atmosphere channel, the vacuum chamber communicating with the vacuum source and the atmosphere channel communicating with atmosphere;
- a first diaphragm dividing the first pump chamber into a first vacuum cavity and a first fluid cavity;
- a second diaphragm dividing the second pump chamber into second vacuum cavity and a second fluid cavity;
- a first piston supported by the first diaphragm;
- a second piston supported by the second diaphragm, wherein the first piston is coupled to the second piston by a piston shaft, the first and second pistons being movable in unison between first and second end stroke positions;
- a first bore communicating the first vacuum cavity with the atmosphere channel, a second bore communicating the second vacuum cavity with the atmosphere channel, a third bore communicating the first vacuum cavity with the vacuum chamber, and a fourth bore communicating the second vacuum cavity with the vacuum chamber;
- an atmosphere valve assembly including a first valve member and a second valve member, the atmosphere valve assembly being movable between a first end stroke position in which the first valve member seals the first bore and the second bore is unsealed, and a second end stroke position in which the second seal member seals the second bore and the first bore is unsealed, the first valve member coupled to the second valve member by a second piston shaft;
- a vacuum valve assembly including a third valve member and a fourth valve member, the vacuum valve assembly being movable between a first end stroke position in which the third valve member seals the third bore and the fourth bore is unsealed, and a second end stroke position in which the fourth seal member seals the fourth bore and the third bore is unsealed, the third valve member coupled to the fourth valve member by a third piston shaft;
- and
- first and second frame members, the first frame member interconnecting first ends of the second and third piston shafts and the second frame member interconnecting second ends of the second and third piston shafts.
7 more elements
A fluid pump comprising:
- a body defining a first pump chamber, a second pump chamber, a vacuum chamber, and an atmosphere channel, the vacuum chamber communicating with the vacuum source and the atmosphere channel communicating with atmosphere;
- a first diaphragm dividing the first pump chamber into a first vacuum cavity and a first fluid cavity;
- a second diaphragm dividing the second pump chamber into second vacuum cavity and a second fluid cavity;
- a first piston supported by the first diaphragm;
- a second piston supported by the second diaphragm, wherein the first piston is coupled to the second piston by a first piston shaft, the first and second pistons being movable in unison between first and second end stroke positions;
- a first bore communicating the first vacuum cavity with the atmosphere channel, a second bore communicating the second vacuum cavity with the atmosphere channel, a third bore communicating the first vacuum cavity with the vacuum chamber, and a fourth bore communicating the second vacuum cavity with the vacuum chamber;
- a atmosphere valve assembly including a first valve member and a second valve member, the atmosphere valve assembly being movable between a first end stroke position in which the first valve member seals the first bore and the second bore is unsealed, and a second end stroke position in which the second seal member seals the second bore and the first bore is unsealed, the first valve member coupled to the second valve member by a second piston shaft;
- a vacuum valve assembly including a third valve member and a fourth valve member, the vacuum valve assembly being movable between a first end stroke position in which the third valve member seals the third bore and the fourth bore is unsealed, and a second end stroke position in which the fourth seal member seals the fourth bore and the third bore is unsealed, the third valve member coupled to the fourth valve member by a third piston shaft;
- and
- an outer magnet supported on the body adjacent each of the first and second fluid cavities of the first and second pump chambers, the outer magnets being positioned to draw a respective one of the first and second pistons towards its end stroke position when the fluid pump is stopped to facilitate restart of the fluid pump.
7 more elements
Dependencies are inferred from the claim text.