Trocar assembly

Claim 2

A trocar assembly (2), which comprises: a hand grip portion (4); and a trocar obturator (6) having a front end and a rear end opposite the front end, and including a piercing tip (8) mounted on the front end thereof, the trocar obturator (6) being mounted on the hand grip portion at the rear end of the obturator, the piercing tip (8) of the obturator (6) being adapted to rotate relative to the hand grip portion (4).

Claim 3

A trocar assembly (2), which comprises: a trocar obturator (6) having a front end and a rear end opposite the front end, and including a piercing tip (8) mounted on the front end thereof; a hand grip portion (4), the trocar obturator (6) being rotatably mounted on the hand grip portion (4); and means for rotatably mounting the obturator (6) on the hand grip portion (4) to allow the obturator (6) to rotate with respect to the hand grip portion (4).

Claim 4

A trocar assembly (2), which comprises: a trocar obturator (6) having a front end and a rear end opposite the front end, and including a piercing tip (8) mounted on the front end thereof; a hand grip portion (4), the trocar obturator (6) being rotatably mounted on the hand grip portion (4); and means for rotatably mounting the obturator (6) on the hand grip portion (4) to allow the obturator (6) to rotate with respect to the hand grip portion (4).

Claim 5

A trocar assembly as defined by Claim 2, wherein the obturator mounting means includes a retaining head (16) mounted on the rear end of the obturator (6), the retaining head (16) being rotatably and securely mounted in a socket (18) formed in the hand grip portion.

Claim 6

A trocar assembly (2) as defined by Claim 3, wherein the retaining head (16) is disposed co-axially to the obturator (6).

Claim 7

A trocar assembly (2) as defined by Claim 4, wherein the retaining head (16) includes a frusto-conically shaped end portion (22), the socket (18) of the hand grip portion (4) having a shape conforming to that of the retaining head end portion (22) to closely receive and retain the end portion.

Claim 8

A trocar assembly (2) as defined by Claim 5, wherein the frusto-conically shaped end portion (22) has a cross-section which widens in a direction outwardly from the rear end of the obturator (6).

Claim 9

A trocar assembly (2) as defined by Claim 4, wherein the retaining head (16) includes a shank portion (20) mounted on the rear end of the obturator, and an end portion (22) mounted on the shank portion (20), the end portion (22) having a greater diameter than that of the shank portion (20), the retaining head shank (20) and end portions (22) being received by the socket (18) of the hand grip portion (4) and being retained to the hand grip portion (4) thereby.

Claim 10

A trocar assembly, which comprises: a hand grip portion (4); a trocar obturator (6) having a front end and a rear end, and including a piercing tip (8) mounted on the front end thereof, the trocar obturator (6) being mounted on the hand grip portion (4) at the rear end of the obturator and being adapted to rotate with respect to the hand grip portion (4); and a retaining head (16) mounted on the trocar obturator (6) at the rear end thereof and disposed co-axially therewith, the retaining head (16) including a shank portion (20) mounted on the obturator (6) rear end and an end portion (22) mounted on the shank portion (20), the end portion (22) having a greater diameter than that of the shank portion (20), the hand grip portion (4) having a socket (18) formed therein for closely receiving the end portion (22) of the retaining head (16) and for retaining the obturator (6) to the hand grip portion (4).

Claim 11

A trocar assembly, which comprises: a hand grip portion (4); a trocar obturator (6) having a front end and a rear end, and including a piercing tip (8) mounted on the front end thereof, the trocar obturator (6) being mounted on the hand grip portion (4) at the rear end of the obturator and being adapted to rotate with respect to the hand grip portion (4); and a retaining head (16) mounted on the trocar obturator (6) at the rear end thereof and disposed co-axially therewith, the retaining head (16) including a shank portion (20) mounted on the obturator (6) rear end and an end portion (22) mounted on the shank portion (20), the end portion (22) having a greater diameter than that of the shank portion (20), the hand grip portion (4) having a socket (18) formed therein for closely receiving the end portion (22) of the retaining head (16) and for retaining the obturator (6) to the hand grip portion (4).