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US 8,002,732 B2Granted
Medical suction and irrigation device
AssigneeAllegiance Corporation
InventorPeter L. Visconti
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention provide a suction evacuation system, or smoke evacuation system, for incorporation into hand-held surgical devices. In particular, the system according to embodiments of the invention can be used in hand-held surgical suction-irrigation devices that may also include electrical systems which deliver energy to effect cutting, ablation and coagulation effects at the surgical site. Embodiments of the invention provide a smoke evacuation system that can be incorporated into a hand-held surgical device wherein the smoke evacuation system is structurally and functionally integrated with the suction control system of the device.
Claims44
A medical device, comprising:
- a housing having a proximal end and a distal end;
- an attachment structure located at the distal end of the housing and which is configured for coupling to a medical instrument;
- at least one of a suction port or an irrigation port located at the proximal end of the housing and which is configured for connection to a source of suction or irrigation, respectively;
- a conduit providing a fluid flow path from the at least one port at the proximal end of the housing to a distal port leading to the medical instrument at the distal end of the housing;
- a valve housing chamber comprising a ramp that extends along an external surface of the valve housing chamber;
- and
- at least one valve configured to move within the fluid flow path to selectively actuate suction or irrigation, wherein the at least one valve is configured to rotate along a path defined by the ramp of the valve housing chamber to permit a first level of suction or irrigation and is configured to axially displace along a longitudinal axis of the valve housing chamber in a non-rotating manner to permit a second, higher level of suction or irrigation.
4 more elements
A method for operating a medical device to perform a medical procedure, comprising:
- providing a medical device comprising:
- a handpiece housing having a proximal end and a distal end;
- a medical instrument connected to the distal end of the handpiece housing;
- at least one of a suction port or an irrigation port located at the proximal end of the housing and which is configured for connection to a source of suction or irrigation respectively;
- a conduit providing a fluid flow path from the at least one port at the proximal end of the housing to a distal port leading to the medical instrument at the distal end of the housing;
- a valve housing chamber comprising a ramp that extends along an external surface of the valve housing chamber;
- and
- at least one valve configured to move within the fluid flow path to selectively actuate suction or irrigation, wherein the at least one valve is configured to rotate along a path defined by the ramp of the valve housing chamber to permit a first level of suction or irrigation and is configured to axially displace along a longitudinal axis of the valve housing chamber in a non-rotating manner to permit a second, higher level of suction or irrigation;
- connecting at least one of the suction port and the irrigation port to a source of suction or irrigation;
- positioning the medical instrument proximate a treatment site;
- and actuating either irrigation or suction by controlling movement of the valve.
8 more elements
A medical device, comprising:
- a housing having a proximal end and a distal end;
- an attachment structure located at the distal end of the housing and which is configured for coupling a medical instrument;
- a suction port and an irrigation port provided at the proximal end of the housing, the suction and irrigation ports being configured for connection to a source of suction and irrigation respectively;
- a first fluid passageway providing a first fluid flow path from the suction port at the proximal end of the housing, extending through a suction piston chamber, and out a lumen defined by a distal conduit leading to the medical instrument at the distal end of the housing,
- a second fluid passageway providing a second fluid flow path from the irrigation port at the proximal end of the housing, extending through an irrigation piston chamber, and out the lumen defined by a distal conduit,
- an identical movable piston provided within each of the suction piston chamber and the irrigation piston chamber;
- and
- a ramp that extends along an external surface of the suction piston chamber, wherein the piston in the suction piston chamber is configured to rotate along a path defined by the ramp of the suction piston chamber and axially translate along a longitudinal axis of the valve housing chamber in a non-rotating manner to provide suction to the medical instrument.
5 more elements
Dependencies are inferred from the claim text.