US 7,329,233 B2 | ||
Surgical system for laparoscopic surgery | ||
Richard D. Gresham, Guilford, Conn. (US) | ||
Assigned to Tyco Healthcare Group LP, North Haven, Conn. (US) | ||
Filed on Oct. 05, 2004, as Appl. No. 10/958,455. | ||
Prior Publication US 2006/0074374 A1, Apr. 06, 2006 | ||
Int. Cl. A61M 37/00 (2006.01); A61M 5/178 (2006.01) |
U.S. Cl. 604—26 [604/164.01; 604/164.12] | 15 Claims |
1. An insufflation apparatus, which comprises:
an elongated sleeve defining a longitudinal axis and having a proximal end and a distal end, the distal end defining a sharpened
tip;
a housing having a proximal end and a distal end, the distal end being connected to the proximal end of the elongated sleeve,
the housing defining a port for receipt of insufflation gases;
a stylet disposed within the elongated sleeve and defining a passageway to direct the insufflation gases from the port into
a body cavity, the stylet being movable between an extended position wherein the distal end of the stylet extends beyond the
sharpened tip of the elongated sleeve and a retracted position wherein the distal end of the stylet is proximal of the sharpened
tip of the elongated sleeve;
a biasing member engagable with the stylet so as to bias the stylet toward the extended position; and
an indicator bulb mounted to the proximal end of the housing and extending therefrom, the indicator bulb having a generally
transparent wall portion whereby the proximal end of the stylet is visible through the indicator bulb when the stylet is in
the retracted position.
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