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US 6,709,418 B1Granted
Apparatus and methods for entering cavities of the body
AssigneeA-Med Systems, Inc.
InventorsWalid N Aboul-Hosn, William R Kanz, Roland W Zieglier, Kelly J McCrystle, Rosalind Castor, Allan deDios
Life of this patent
Estimating the term…
Abstract
A cannula assembly (120) provides access to an interior body region (22). The cannula assembly defines a lumen (24) having a distal region (30). The lumen includes a bend in the distal region to guide deployment in the body region. A closure assembly (44, 46, 48) can be provided to open, and close the cannula assembly to fluid flow.
Claims22
A cannulation device for access to an interior body region comprising
- a cannula body having a distal end for insertion through an incision and including first and second interior flow paths to circulate fluid,
- a conduit communicating with one of the first and second flow paths and extending beyond the distal end of the cannula body to input or outflow fluid at an area of the interior body region spaced from the distal end,
- a port communicating with the other one of the first and second flow paths to input or outflow fluid at the distal end, and
- a closure assembly on the cannula body operating in a first condition to close the port, thereby preventing fluid circulation within the cannula body between the first and second flow paths, the closure assembly operating in a second condition to open the port, thereby allowing fluid circulation within the cannula body between the first and second flow paths.
1 more element
A cannulation device for access to an interior body region comprising
- a cannula body having a distal end for insertion through an incision and including first and second interior flow paths to circulate fluid,
- a conduit communicating with one of the first and second flow paths and extending beyond the distal end of the cannula body to input or outflow fluid at an area of the interior body region spaced from the distal end,
- a port communicating with the other one of the first and second flow paths to input or outflow fluid at the distal end, and
- a closure assembly on the cannula body operating in a first condition to close the port, thereby preventing fluid circulation within the cannula body between the first and second flow paths, the closure assembly operating in a second condition to open the port, thereby allowing fluid circulation within the cannula body between the first and second flow paths,
- the pump, the first flow path, and the second flow path having a combined priming volume external of interior body region of not greater than about 1000 ml.
2 more elements
A cannulation device for access to an interior body region comprising
- a cannula body having a distal end for insertion through an incision and including first and second interior flow paths to circulate fluid,
- a conduit communicating with one of the first and second flow paths and extending beyond the distal end of the cannula body to input or outflow fluid at an area of the interior body region spaced from the distal end,
- a port communicating with the other one of the first and second flow paths to input or outflow fluid at the distal end, and
- a closure assembly on the cannula body operating in a first condition to close the port, thereby preventing fluid circulation within the cannula body between the first and second flow paths, the closure assembly operating in a second condition to open the port, thereby allowing fluid circulation within the cannula body between the first and second flow paths,
- the closure assembly including a flap movable over the port to close the port and away from the port to open the port, and an actuator coupled to the flap to affect movement of the flap to close and open the port.
2 more elements
A system for circulating blood in a heart comprising
- a cannula body having a distal end for insertion through an incision and including first and second interior flow paths to circulate blood,
- a conduit communicating with one of the first and second flow paths and being sized to extend, in use, beyond the distal end of the cannula body for passage into a heart chamber, to thereby input or outflow blood from the heart chamber, the conduit including a preformed, bent region to direct its passage from the distal end into the heart chamber, and
- a port communicating with the other one of the first and second flow paths to input or outflow blood at the distal end.
Dependencies are inferred from the claim text.