Transmission for driving circular needle
First Claim
1. A suturing cartridge configured to be coupled to a laparoscopic surgical instrument comprising an elongate shaft having a proximal end and a distal end, the distal end comprising a rack and pinion and a receiver configured to receive and hold the cartridge, the suturing cartridge comprising:
- an arced needle track;
an arced needle positioned in the needle track;
a length of suture connected to the needle;
a reciprocating needle driver operative to engage and move the needle in the needle track;
a rotary input that rotates about an axis;
a torsional interface comprising a first mating means connected to the rotary input, the first mating means being complimentary to a second mating means connected to the pinion, the first and second mating means being configured to engage one another when the suturing cartridge is held in the receiver of the laparoscopic surgical instrument and disengage from one another when the suturing cartridge is removed from the receiver of the laparoscopic surgical instrument;
a link comprising a proximal end connected to the rotary input and a distal end connected to the needle driver;
whereby rotation of the rotary input in a first angular direction translates the needle driver in a second angular direction opposite of the first angular direction.
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Accused Products
Abstract
A surgical suturing device comprises an arced needle track, an arced needle positioned in the needle track, and a length of suture connected to the needle. A reciprocating needle driver is operative to engage and move the needle in the needle track. A rotary input rotates about an axis. A link has a proximal end connected to the rotary input and a distal end connected to the needle driver. Rotation of the rotary input in a first angular direction translates the needle driver in a second angular direction opposite of the first angular direction.
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Citations
20 Claims
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1. A suturing cartridge configured to be coupled to a laparoscopic surgical instrument comprising an elongate shaft having a proximal end and a distal end, the distal end comprising a rack and pinion and a receiver configured to receive and hold the cartridge, the suturing cartridge comprising:
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an arced needle track; an arced needle positioned in the needle track; a length of suture connected to the needle; a reciprocating needle driver operative to engage and move the needle in the needle track; a rotary input that rotates about an axis; a torsional interface comprising a first mating means connected to the rotary input, the first mating means being complimentary to a second mating means connected to the pinion, the first and second mating means being configured to engage one another when the suturing cartridge is held in the receiver of the laparoscopic surgical instrument and disengage from one another when the suturing cartridge is removed from the receiver of the laparoscopic surgical instrument; a link comprising a proximal end connected to the rotary input and a distal end connected to the needle driver; whereby rotation of the rotary input in a first angular direction translates the needle driver in a second angular direction opposite of the first angular direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A suturing cartridge configured to be connected to a surgical instrument comprising an elongate shaft having a proximal end and a distal end, the distal end comprising a rack and pinion and a receiver configured to receive and hold the suturing cartridge, the suturing cartridge comprising:
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an arced needle track; an arced needle positioned in the needle track; a length of suture connected to the needle; a reciprocating needle driver operative to engage and move the needle in the needle track; a rotary input configured to rotationally couple with the pinion when the suturing cartridge is seated in the receiver of the surgical instrument and decouple from the pinion when the suturing cartridge is removed from the receiver of the surgical instrument; and a link comprising a proximal end connected to the rotary input and a distal end connected to the needle driver; whereby rotation of the rotary input translates the needle driver to move the needle in the needle track. - View Dependent Claims (18, 19)
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20. A circular needle applier, comprising:
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an arced needle track; an arced needle positioned in the needle track; a length of suture connected to the needle; a reciprocating needle driver operative to engage and move the needle in the needle track; a rotary input that rotates about an axis, the rotary input comprising a radial slot; and a link comprising a proximal end having a pin received by the radial slot of the rotary input such that the radial slot rotationally constrains the pin relative to the rotary input while accommodating some relative radial movement, a distal end pivotally connected to the needle driver, and an elongate slot interposed between the proximal and distal ends, the elongate slot receiving a pin about which the link both longitudinally translates and pivots; whereby rotation of the rotary input in a first angular direction translates the needle driver in a second angular direction opposite of the first angular direction.
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Specification