CANNULA FOR CONNECTING MEDICAL DEVICES TO BIOLOGICAL SYSTEMS
First Claim
1. A cannula for connecting a medical device to a biological system, comprising:
- a body including a main port for a working fluid, a working fluid port, and a conduit extending through the body between the working fluid port and the main port;
the body further including a tissue engagement portion encircling the working fluid andthe body further including vacuum port, at least one vacuum outlet at the tissue engagement portion, and at least one vacuum passage extending through the body between the at least one vacuum outlet and the vacuum port,
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Accused Products
Abstract
A cannula for connecting a medical device to a biological system is taught. The cannula includes a tissue engagement portion, preferably in the form of an annulus, to which a vacuum is applied through the cannula to attract and hold tissue of the biological system in an initial connection while an affixment device is applied to complete the connection. In addition to a working fluid conduit, comprising a main port, a working fluid passage and a working fluid port, and a port to apply the vacuum, the cannula can include a sensor port to allow sensing pressure or other characteristics of the working fluid at a point closely adjacent to the connection between the cannula and the biological system.
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Citations
20 Claims
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1. A cannula for connecting a medical device to a biological system, comprising:
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a body including a main port for a working fluid, a working fluid port, and a conduit extending through the body between the working fluid port and the main port; the body further including a tissue engagement portion encircling the working fluid and the body further including vacuum port, at least one vacuum outlet at the tissue engagement portion, and at least one vacuum passage extending through the body between the at least one vacuum outlet and the vacuum port, - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20)
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16. A cannula kit to connect medical device to a biological system, the comprising:
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a cannula having; a body including a main port for a working fluid, a working fluid port, and a conduit extending through the body between the working fluid port and the main port; the body further including a tissue engagement portion encircling the working fluid port; the body further including a vacuum port, at least one vacuum outlet at the tissue engagement portion, and at least one vacuum age extending through the body between the at least one vacuum outlet and the vacuum port; and an affixment device to encircle tissue of a biological system at the tissue engagement portion and to maintain the tissue engaged therewith. - View Dependent Claims (17, 18, 19)
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Specification