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US 9,066,754 B2Granted
Trocar and cannula assembly having improved conical valve, and methods related thereto
OwnerRoland Strelitzki, Daniel G. Doerr +2inventors
InventorsRoland Strelitzki, Daniel G. Doerr, Rogelio A. Insignares, Gary W. Haberland
Life of this patent
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Abstract
A trocar and cannula assembly with improved conical valve that incorporates a plurality of ribs to restrict and/or otherwise influence valve movement, and a plurality of improved convolutes and bumps to enhance performance characteristics.
Claims17
A valve comprising:
- a valve body;
- a valve member connected to said valve body;
- a convolute extending around a portion of said valve body;
- a characteristic extending through a portion of said convolute;
- and
- a friction-reduction feature formed at one of an inner surface and an outer surface of said valve body;
- wherein said friction-reduction feature is formed from a first material having a first coefficient of friction, said valve body being formed from a second material having a second coefficient of friction, wherein said first coefficient of friction does not equal said second coefficient of friction.
4 more elements
A valve comprising:
- a valve body having a valve opening;
- a periphery valve section extending outwardly from said valve body;
- a convolute located at said periphery valve section;
- wherein said valve body includes a valve extension extending away from said convolute;
- a rib member extending along at least a portion of one of a periphery of said valve body and said periphery valve section;
- and
- a friction-reduction feature disposed proximate to said valve opening and formed at one of an inner surface and an outer surface of said valve extension;
- wherein said friction-reduction feature is formed from a first material having a first coefficient of friction, said valve body being formed from a second material having a second coefficient of friction, wherein said first coefficient of friction does not equal said second coefficient of friction.
5 more elements
A valve comprising:
- a valve body having a proximal end and a distal end;
- a valve opening formed at said distal end of said valve body;
- a valve ring connected to said proximal end of said valve body;
- a convolute intermediately positioned between said valve body and said valve ring;
- a plurality of ribs spanning across at least a portion said plurality of convolutes;
- and
- a friction-reduction feature formed at one of an inner surface and an outer surface of said valve body;
- wherein, when said valve body is tensioned, said convolute cooperates with said ribs and thereby facilitates said valve opening to return to a substantially equilibrium shape;
- wherein said friction-reduction feature is formed from a first material having a first elasticity, said valve body being formed from a second material having a second elasticity, wherein said first elasticity does not equal said second elasticity.
6 more elements
Dependencies are inferred from the claim text.