US 6,202,898 B1Granted

Device for supplying medical instruments with a fluid in particular with a rinsing fluid

AssigneeRichard Wolf GmbH

InventorGuido Koch

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Abstract

With this device the fluid is located in a container which can be set under pressure, into which two cannulas of differing lengths may be inserted. A short cannula, via a gas conduit and a release valve, is connectable to a pressurised gas source in order to impinge the container above the fluid level with pressurised gas, whilst the other longer cannula is connectable to a fluid conduit leading to the instrument and protrudes into the fluid located in the container. The fluid flow to the instrument is interruptable with a blocking element and the pressurised gas supply to the container is interruptable with the release valve. Such a device may be simply constructed and used when, according to the invention, the cannulas, the blocking element and a control valve are grouped together into a constructional unit on which there is located one connection for the gas conduit and a further connection for the fluid conduit.

Claims14

Dependent claims

A device for supplying medical instruments with a fluid located in a container which is set under pressure by a pressurized gas supplied to the container via a gas conduit and a release valve and thereby forced through a fluid conduit leading to the instrument, the device comprising a control valve unit having

(a) a first connection for connection with the gas conduit,
(b) a second connection for connection to the fluid conduit,
(c) a short cannula having a first end interruptably connected to the first connection and a second end for insertion into the container above a level of the fluid located in the container and for impinging the fluid located in the container with the pressurized gas,
(d) a long cannula having a length greater than a length of the short cannula and having a first end interruptably connected to the second connection and a second end for protruding into the fluid located in the container, and
(e) a blocking element for interrupting the connection of the long cannula to the second connection and for interrupting the connection of the short cannula to the first connection upon switching off the release valve.

2 more elements

Dependencies are inferred from the claim text.