Surgical valve
First Claim
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1. An apparatus for providing access to an opening in a body cavity containing insufflation gas at an insufflation pressure, the apparatus comprising:
- a controllable valve defining an access channel for a surgical implement and adapted to be coupled in fluid communication with the opening, the valve being responsive to an actuation signal to restrict flow of insufflation gas from the body cavity through the opening;
a sensor for providing an output signal corresponding to the insufflation pressure; and
a controller coupled to the controllable valve and the sensor and responsive to the output signal provided by the sensor to provide the actuation signal to the controllable valve.
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Abstract
In a laparoscopic surgery or the like, access is provided to an opening in a body cavity that contains insufflation gas at an insufflation pressure. The flow of insufflation gas from the body cavity through the opening is limited in response to the sensed insufflation pressure in the cavity.
291 Citations
17 Claims
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1. An apparatus for providing access to an opening in a body cavity containing insufflation gas at an insufflation pressure, the apparatus comprising:
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a controllable valve defining an access channel for a surgical implement and adapted to be coupled in fluid communication with the opening, the valve being responsive to an actuation signal to restrict flow of insufflation gas from the body cavity through the opening; a sensor for providing an output signal corresponding to the insufflation pressure; and a controller coupled to the controllable valve and the sensor and responsive to the output signal provided by the sensor to provide the actuation signal to the controllable valve. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for providing access to an opening in a body cavity containing insufflation gas at an insufflation pressure, the apparatus comprising:
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a controllable valve comprising an inflatable bladder and defining an access channel adapted to be coupled in fluid communication with the opening, the valve being responsive to an actuation signal to restrict flow of insufflation gas from the body cavity through the opening; a sensor for providing an output signal corresponding to the insufflation pressure; and a controller coupled to the controllable valve and the sensor and responsive to the output signal provided by the sensor to provide the actuation signal to the controllable valve. - View Dependent Claims (8, 9, 10, 11)
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12. A system for providing access to an opening in an area of a body cavity containing insufflation gas at an insufflation pressure, the apparatus comprising:
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an inflatable annular bladder defining a chamber and a bladder opening through which the body opening can be accessed; a first source of pressurized gas in selective fluid communication with the chamber; an insufflation pressure sensor for providing an output signal corresponding to the insufflation pressure; and a controller coupled to the first source and to the insufflation pressure sensor and responsive to the output signal provided by the insufflation pressure sensor to provide a first control signal to the first source to control the first source to provide pressurized gas to the chamber. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification