Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
An assembly for use with a trocar oburator, comprising: a body having a bore therethrough; an outer cannula which is attached to the body and which has a bore which is longitudinally aligned with the bore of the body; an inner cannula which:(i) is slidably inserted into the outer cannula, (ii) has a length that is greater than the length of the outer cannula, (iii) is movable longitudinally in the outer cannula between an extended position and a retracted position, and (iv) is spring-biased against the body in the extended position; and an operator-actuated control mechanism which engages the inner cannula and which has unarmed and armed positions, the inner cannula being locked in the extended position when the control mechanism is in the unarmed position and the inner cannula being movable from its extended position to its retracted position without an obturator being inserted in the inner cannula, when the operator actuates the control mechanism.
Claim 2
Dependent Claim
156 words
An assembly for use with a trocar oburator, comprising: a body having a bore therethrough; an outer cannula which is attached to the body and which has a bore which is longitudinally aligned with the bore of the body; an inner cannula which:(i) is slidably inserted into the outer cannula, (ii) has a length that is greater than the length of the outer cannula, (iii) is movable longitudinally in the outer cannula between an extended position and a retracted position, and (iv) is spring-biased against the body in the extended position; and an operator-actuated control mechanism which engages the inner cannula and which has unarmed and armed positions, the inner cannula being locked in the extended position when the control mechanism is in the unarmed position and the inner cannula being movable from its extended position to its retracted position without an obturator being inserted in the inner cannula, when the operator actuates the control mechanism.
Claim 3
Dependent Claim
201 words
A trocar, comprising: a body having a bore therethrough; an outer cannula which is attached to the body and which has a bore which is longitudinally aligned with the bore of the body; an inner cannula which is slidably inserted into the outer cannula, which has a length that is greater than the length of the outer cannula, which may move longitudinally in the outer cannula between an extended position and a retracted position, and which is spring-biased against the body in the extended position; an obturator which is separate from the inner cannula, which includes an elongated shaft that extends through the body and the inner cannula, and which has a sharp piercing tip on one end which is covered by the inner cannula when the inner cannula is in its extended position; and an operator-actuated locking control mechanism which operates independently of the movement of the obturator, which engages the inner cannula and which has unarmed and armed positions, the inner cannula being locked in the extended position when the control mechanism is in the unarmed position and the inner cannula being movable from its extended position to its retracted position, when the operator actuates the control locking mechanism.
Claim 4
Dependent Claim
201 words
A trocar, comprising: a body having a bore therethrough; an outer cannula which is attached to the body and which has a bore which is longitudinally aligned with the bore of the body; an inner cannula which is slidably inserted into the outer cannula, which has a length that is greater than the length of the outer cannula, which may move longitudinally in the outer cannula between an extended position and a retracted position, and which is spring-biased against the body in the extended position; an obturator which is separate from the inner cannula, which includes an elongated shaft that extends through the body and the inner cannula, and which has a sharp piercing tip on one end which is covered by the inner cannula when the inner cannula is in its extended position; and an operator-actuated locking control mechanism which operates independently of the movement of the obturator, which engages the inner cannula and which has unarmed and armed positions, the inner cannula being locked in the extended position when the control mechanism is in the unarmed position and the inner cannula being movable from its extended position to its retracted position, when the operator actuates the control locking mechanism.