Surgical access instrument including a valve with dynamic fluid

Details Surgical access instrument including a valve with dynamic fluid Surgical access instrument including a valve with dynamic fluid

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2668154

A surgical access instrument for use during the course of a minimally invasive surgical procedure, includes an access member defining a longitudinal axis and having a longitudinal opening for reception and passage of a surgical object, a valve membrane mounted to the access member defining at least one internal cavity and permitting passage of the surgical object and a dynamic fluid disposed within the internal cavity. The dynamic fluid is adapted to transition from a first state to a second state upon exposure thereof to a stimulus to assist in stabilizing the surgical object relative to the access member. In its first state, the fluid defines a first set of physical attributes, including but not being limited to viscosity and density, that allow for the displacement of the fluid, whereas in the second state, the fluid defines a second, dissimilar set of physical attributes, e.g., a greater viscosity and a greater density, that substantially limit displacement of the fluid.

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