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US 2010/0145261 A1Published application
Trocar sleeve
OwnerDouglas E. Ottinventor
Life of this patent
Estimating the term…
Abstract
A trocar sleeve that isolates the surgical device or movement thereof to inhibit or prevent an established non-jet streaming condition from becoming a jet streaming condition and a method of inhibiting or preventing a jet streaming condition from occurring due to instrument obstruction.
Claims9
A blind trocar sleeve for preventing transient jet streaming conditions during insufflating a body cavity comprising:
- a housing;
- an inlet port attached to said housing;
- an elongated tubular member comprising a sidewall forming a centrally located cylindrical plenum chamber therein and a closed end to prevent insertion of an instrument therethrough with the cylindrical plenum chamber free of obstruction, said centrally located elongated tubular member having a plurality of insufflating fluid delivering apertures therein, said plurality of insufflating fluid delivering apertures positioned circumferential to said cylindrical plenum chamber and in fluid communication with said cylindrical plenum chamber for delivery of the insufflating fluid from the chamber to a body cavity at a velocity below a jet streaming velocity with the plurality of insufflating fluid delivering apertures sufficiently small to preclude insertion of surgical instruments therethrough.
The method of insufflating a body cavity without damaging a tissue in the body cavity that might occur during transient conditions within the trocar sleeve comprising:
- directing a fluid flow from a first chamber in a trocar sleeve through ports in the trocar sleeve at a velocity less than a jet streaming velocity;
- inserting or manipulating an instrument in a further chamber that is isolated from the first chamber to prevent the instrument therein from affecting the flow of fluid from the first chamber to thereby maintain the velocity of the fluid at less than the jet streaming velocity.
Dependencies are inferred from the claim text.