Low pressure irrigation system
First Claim
1. An irrigation system for communicating a first fluid media to a body cavity comprising means for communicating the first fluid media to the body cavity via a cannula extending into the body cavity, the communicating means including a pump control unit with a pump and a controller to pressurize the first fluid media;
- first fluid tubing extending from the pump control unit to the cannula; and
a monitor control circuit extending from the cannula to the pump control unit to communicate fluid pressure associated with the cannula to the pump control unit in response to which the controller modulates the pump output, the monitor control circuit including a second fluid media different from the first fluid media but responsive to the fluid pressure of the first fluid media to assist the pump control unit in maintaining a predetermined fluid pressure level for the first fluid media within the body cavity, the first fluid tubing and the monitor control circuit include a common housing, the housing including a diaphragm to separate the first fluid media from the second fluid media and a relief valve limiting the maximum fluid pressure of the first fluid media.
2 Assignments
0 Petitions
Accused Products
Abstract
An irrigation system is provided to communicate fluid pressure to a body cavity for diagnostic or surgical proceedings. A pump control unit generates fluid pressure and a monitor control circuit provides feedback to the pump control unit to substantially avoid a build up of excessive fluid pressure within the body cavity. In combination with a hysterscope, the irrigation system extends a uterus in a safe manner so that fluid absorption within the uterus is substantially eliminated.
149 Citations
8 Claims
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1. An irrigation system for communicating a first fluid media to a body cavity comprising means for communicating the first fluid media to the body cavity via a cannula extending into the body cavity, the communicating means including a pump control unit with a pump and a controller to pressurize the first fluid media;
- first fluid tubing extending from the pump control unit to the cannula; and
a monitor control circuit extending from the cannula to the pump control unit to communicate fluid pressure associated with the cannula to the pump control unit in response to which the controller modulates the pump output, the monitor control circuit including a second fluid media different from the first fluid media but responsive to the fluid pressure of the first fluid media to assist the pump control unit in maintaining a predetermined fluid pressure level for the first fluid media within the body cavity, the first fluid tubing and the monitor control circuit include a common housing, the housing including a diaphragm to separate the first fluid media from the second fluid media and a relief valve limiting the maximum fluid pressure of the first fluid media. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- first fluid tubing extending from the pump control unit to the cannula; and
Specification