Medical instrument for closure of trocar site openings and method for use of same
First Claim
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1. A medical instrument for closing an opening for surgery, comprising:
- an elongated cylindrical member having an open proximal end and a closed distal end;
an actuating mechanism being operatively positioned within the cylindrical member;
at least two elongated needles secured to the cylindrical member and engaging with the actuating mechanism;
the at least two elongated needles include proximal ends capable of retaining a suture, the at least two needles being movable by the actuating mechanism from a closed position adjacent to an outer surface of the cylindrical member to an open position, wherein in the open position the proximal ends of the at least two needles extend away for the outer surface of the cylindrical member, wherein the cylindrical member is a hollow cylindrical member for containing the actuating mechanism, and wherein the actuating mechanism includes a shaft with a turntable knob at its proximal end and a screw threaded portion near its distal end for engaging with distal ends of the needles.
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Abstract
A medical instrument used for closing an opening for surgery in which a trocar is used, and a method of securely closing the opening. The instrument includes a hollow tube, into which is inserted an elongated actuating mechanism, having at least two needles that can be positioned in a closed or an open position. By securing a suture on the needles, inserting the instrument into the surgical opening, placing the needles into the open position, withdrawing the instrument through the body tissue, and tying the sutures, a secure closure of the surgical opening can be achieved.
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Citations
19 Claims
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1. A medical instrument for closing an opening for surgery, comprising:
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an elongated cylindrical member having an open proximal end and a closed distal end;
an actuating mechanism being operatively positioned within the cylindrical member;
at least two elongated needles secured to the cylindrical member and engaging with the actuating mechanism;
the at least two elongated needles include proximal ends capable of retaining a suture, the at least two needles being movable by the actuating mechanism from a closed position adjacent to an outer surface of the cylindrical member to an open position, wherein in the open position the proximal ends of the at least two needles extend away for the outer surface of the cylindrical member, wherein the cylindrical member is a hollow cylindrical member for containing the actuating mechanism, and wherein the actuating mechanism includes a shaft with a turntable knob at its proximal end and a screw threaded portion near its distal end for engaging with distal ends of the needles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for closing a surgical opening employing a medical instrument having a cylindrical member, an actuating mechanism, and at least two elongated needles, the method comprising the steps of:
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securing a suture to the at least two needles and to a distal end of the cylindrical member;
retracting the at least two needles, so that the at least two needles lie adjacent to an outer surface of the cylindrical member;
inserting the medical instrument until proximal ends of the at least two needles are below an inner most layer of tissue;
deploying needles to an open position;
withdrawing the medical instrument until the suture appears above the skin layer of a patient;
removing ends of the suture from the needles;
reinserting the medical instrument while still in an open position until the proximal ends of the at least two needles are below the inner most layer of tissue;
retracting the at least two needles so that needles are returned to a closed position and below the outer surface of the cylindrical member;
withdrawing the instrument;
retrieving ends of the suture in a subcutaneous tissue; and
tying required knots in the suture, the knots closing the surgical opening, wherein the deploying step and the retracting step are accomplished by turning a knob on a proximal end of an elongated shaft of the actuating mechanism by a predetermined amount. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A medical instrument for closing an opening for surgery, comprising:
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an elongated cylindrical member having an open proximal end and a closed distal end;
an actuating mechanism being operatively positioned within the elongated cylindrical member;
at least two elongated needles secured to the elongated cylindrical member and engaging with the actuating mechanism;
the at least two elongated needles including proximal ends capable of retaining a suture, the at least two needles being movable by the actuating mechanism from a closed position adjacent to an outer surface of the elongated cylindrical member to an open position, wherein in the open position the proximal ends of the at least two needles extend away from the outer surface of the cylindrical member, and wherein the elongated cylindrical member has at least one longitudinal ridge formed on its inner side for engaging with at least one groove formed on an outer side of a lower holding piece. - View Dependent Claims (19)
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Specification