Surgical instrument with safety mechanism
First Claim
1. A surgical instrument comprising:
- a handle assembly including a firing mechanism;
an elongated body portion extending distally from the handle assembly;
a head portion disposed adjacent a distal end of the elongated body portion, the head portion including an anvil assembly and a shell assembly that are moveable between spaced and approximated positions relative to one another, the shell assembly supporting a plurality of staples, the firing mechanism being actuatable to eject the plurality of staples from the shell assembly; and
a safety mechanism disposed in mechanical cooperation with the handle assembly, the safety mechanism including a lever moveable from a first position preventing actuation of the firing mechanism to a second position permitting actuation of the firing mechanism, the lever being biased towards the first position, the safety mechanism including a latch retainer for releasably retaining the lever in the second position, wherein the latch retainer releases the lever from the second position in response to movement of the anvil and shell assemblies from the approximated position towards the spaced position relative to one another.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical instrument including a handle assembly, a safety mechanism, an elongated body portion and a head portion is disclosed. The handle assembly includes a stationary handle, an approximation mechanism, and a firing trigger. A lever of the safety mechanism is movable between a first position where the firing trigger is prevented from being actuated, and a second position where the firing trigger is able to be actuated. A first jaw member of the head portion is movable in relation to a second jaw member of the head portion between spaced and approximated positions. Movement of the first jaw member in relation to the second jaw member from the approximated position towards the spaced position causes the lever of the safety mechanism to move from its second position to its first position.
1358 Citations
18 Claims
-
1. A surgical instrument comprising:
-
a handle assembly including a firing mechanism; an elongated body portion extending distally from the handle assembly; a head portion disposed adjacent a distal end of the elongated body portion, the head portion including an anvil assembly and a shell assembly that are moveable between spaced and approximated positions relative to one another, the shell assembly supporting a plurality of staples, the firing mechanism being actuatable to eject the plurality of staples from the shell assembly; and a safety mechanism disposed in mechanical cooperation with the handle assembly, the safety mechanism including a lever moveable from a first position preventing actuation of the firing mechanism to a second position permitting actuation of the firing mechanism, the lever being biased towards the first position, the safety mechanism including a latch retainer for releasably retaining the lever in the second position, wherein the latch retainer releases the lever from the second position in response to movement of the anvil and shell assemblies from the approximated position towards the spaced position relative to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A surgical instrument comprising:
-
a handle assembly including a firing mechanism; an elongated body portion extending distally from the handle assembly; a head portion disposed adjacent a distal end of the elongated body portion, the head portion including an anvil assembly and a shell assembly, the head portion having a spaced position in which the anvil assembly is spaced from the shell assembly and an approximated position in which the anvil assembly is approximated to the shell assembly, the shell assembly supporting a plurality of staples, the firing mechanism being actuatable to eject the plurality of staples from the shell assembly; and a safety mechanism disposed in mechanical cooperation with the handle assembly, the safety mechanism including a lever moveable from a first position preventing actuation of the firing mechanism to a second position permitting actuation of the firing mechanism, the lever being biased towards the first position, the safety mechanism including a latch retainer for releasably retaining the lever in the second position, wherein the latch retainer releases the lever from the second position in response to movement of the head portion towards the spaced position. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification