WO1995011049B1 - Metering gauge trumpet valve - Google Patents

Metering gauge trumpet valve

Info

Publication number
WO1995011049B1
WO1995011049B1 PCT/US1994/012102 US9412102W WO9511049B1 WO 1995011049 B1 WO1995011049 B1 WO 1995011049B1 US 9412102 W US9412102 W US 9412102W WO 9511049 B1 WO9511049 B1 WO 9511049B1
Authority
WO
WIPO (PCT)
Prior art keywords
knob
piston
valve chamber
valve
protruding member
Prior art date
Application number
PCT/US1994/012102
Other languages
French (fr)
Other versions
WO1995011049A1 (en
Filing date
Publication date
Priority claimed from US08/139,948 external-priority patent/US5522796A/en
Application filed filed Critical
Priority to JP7512236A priority Critical patent/JPH09507396A/en
Priority to CA002201610A priority patent/CA2201610C/en
Priority to EP94931975A priority patent/EP0724460B1/en
Priority to DE69432081T priority patent/DE69432081T2/en
Publication of WO1995011049A1 publication Critical patent/WO1995011049A1/en
Publication of WO1995011049B1 publication Critical patent/WO1995011049B1/en

Links

Abstract

A control valve assembly (10) is disclosed having a housing defining at least one valve chamber having an elongated cylinder (12). A piston (36) is partially disposed within said valve chamber and the valve assembly allows for reciprocating movement of the piston within said valve chamber. A metering device (60) is provided for precise positioning of the piston within the valve chamber.

Claims

AMENDED CLAIMS[received by the International Bureau on 9 May 1995 (09.05.95); original claims 1, 8 and 12 amended; remaining claims unchanged (4 pages)]
1. A suction and irrigation control valve assembly for use in laparoscopic surgical procedures, comprising: a housing defining at least one valve chamber having an elongated cylinder, said valve having an inlet and an outlet; a piston partially disposed within said valve chamber; manual depression means for reciprocating movement of the piston within said valve chamber anywhere from a fully open position to a fully close position; and metering means for precise positioning of the piston within the valve chamber a predetermined distance between said open and said close positions, and any distance therebetween, to allow at least partial communication between said inlet and said outlet, said manual depression means moving said piston within the valve chamber independently from said metering means.
2. The control valve assembly of Claim 1 wherein said metering means comprises: a gear operatively associated with the piston, the gear having at least one ramp portion; a protruding member having a sidewall and attached above a top portion of said valve chamber, a portion of the sidewall being cutaway to define a first opening in said protruding member; and a knob having a handle portion and a circular portion, the circular portion of said knob being inserted within the cutaway of said protruding member, the handle portion of said knob having an inner surface and an outer surface, the circular portion of said knob having at least one ramp portion, the ramp portion of said gear and the ramp portion of said knob working against each other to provide retraction or extension of said piston within said valve chamber.
3. The control valve assembly of Claim 2 further including at least one protrusion disposed on said housing, said protrusion being aligned with the handle portion of said knob.
4. The control valve assembly of Claim 3 wherein the inner surface of said knob has a plurality of ridges or serrations, said plurality of ridges or serrations passing over the protrusion disposed on said housing to indicate a certain distance the piston has traveled within the valve chamber.
5. The control valve assembly of Claim 2 wherein the outer surface of said knob has a gripping surface.
6. The control valve assembly of Claim 5 wherein said gripping surface is a plurality of ridges or serrations.
7. A suction and irrigation control valve assembly for use in laparoscopic surgical procedures, comprising: a housing defining at least one valve chamber having an elongated cylinder, at least one protrusion disposed on said housing, the valve chamber being further provided with an inlet orifice connected to a source of vacuum or irrigation fluid and a second orifice connected to a common conduit; a piston partially disposed within said valve chamber; means for reciprocating movement of the piston within said valve chamber, the piston having an aperture and upon reciprocating movement of the piston within the cylinder the aperture allows for communication between the orifices in said cylinder wall through the aperture; a gear operatively associated with the piston, the gear having at least one ramp portion; a protruding member having a sidewall and attached above a top portion of said valve chamber, a portion of the sidewall being cutaway to define a first opening in said protruding member; and a knob having a handle portion and a circular portion, the circular portion of said knob being inserted within the cutaway of said protruding member, the handle portion of said knob having an inner surface and an outer surface, the handle portion of said knob being aligned with the protrusion on said housing, the inner surface and the outer surface of said handle portion having ridges or serrations, the circular portion of said knob having at least one ramp portion, the ramp portion of said gear and the ramp portion of said knob working against each other to provide retraction or extension of said piston within said valve chamber.
8. An improved suction and irrigation control valve, the valve having a housing defining at least one valve chamber and an associated piston partially disposed within the valve chamber, the housing having an inlet and an outlet, the valve also having manual depression means for reciprocating movement of the piston within the valve chamber anywhere from a fully open position to a fully close position, said valve for use in laparoscopic surgical procedures, wherein the improvement comprises : a metering device for use in conjunction with said valve, said metering device comprising: a protruding member having a sidewall and attached above a top portion of said valve chamber, a portion of the sidewall being cutaway to define a first opening in said protruding member; and metering means for precise positioning of the piston within the chamber a predetermined distance between said open and said close positions, and any distance therebetween, to allow at least partial communication between said inlet and said outlet; wherein said manual depression means moving said piston within the valve chamber independently from said metering means.
9. The metering device of Claim 8 wherein said metering means comprises: a gear operatively associated with the piston, the gear having at least one ramp portion; and a knob having a handle portion and a circular portion, the circular portion of said knob being inserted within the cutaway of said protruding member, the handle portion of said knob having an inner surface and an outer surface, the circular portion of said knob having at least one ramp portion, the ramp portion of said gear and the ramp portion of said knob working 2 0
against each other to provide retraction or extension of said piston within said valve chamber.
10. The metering device of claim 9 further including at least one protrusion disposed on said housing, said protrusion being aligned with the handle portion of said knob.
11. The metering device of Claim 9 wherein the inner surface of said knob has a plurality of ridges or serrations, said plurality of ridges or serrations passing over the protrusion disposed on said housing to indicate a certain distance the piston has traveled within the valve chamber.
12. The metering device of claim 9 wherein the outer surface of said knob has a gripping surface.
13. The metering device of claim 12 wherein said gripping surface is a plurality of ridges or serrations.
MENDED SHEET (ARTICLE 19)
PCT/US1994/012102 1993-10-21 1994-10-20 Metering gauge trumpet valve WO1995011049A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7512236A JPH09507396A (en) 1993-10-21 1994-10-20 Weighing gauge trumpet valve
CA002201610A CA2201610C (en) 1993-10-21 1994-10-20 Metering gauge trumpet valve
EP94931975A EP0724460B1 (en) 1993-10-21 1994-10-20 Metering gauge trumpet valve
DE69432081T DE69432081T2 (en) 1993-10-21 1994-10-20 MEASURING DEVICE TRUMPET VALVE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/139,948 1993-10-21
US08/139,948 US5522796A (en) 1990-01-26 1993-10-21 Metering gauge trumpet valve

Publications (2)

Publication Number Publication Date
WO1995011049A1 WO1995011049A1 (en) 1995-04-27
WO1995011049B1 true WO1995011049B1 (en) 1995-06-08

Family

ID=22489035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/012102 WO1995011049A1 (en) 1993-10-21 1994-10-20 Metering gauge trumpet valve

Country Status (7)

Country Link
US (1) US5522796A (en)
EP (1) EP0724460B1 (en)
JP (1) JPH09507396A (en)
CA (1) CA2201610C (en)
DE (1) DE69432081T2 (en)
ES (1) ES2191687T3 (en)
WO (1) WO1995011049A1 (en)

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