Force limited needle driver
First Claim
1. A surgical suturing device, comprising:
- an arced needle comprising a length of suture;
an elongate shaft comprising a proximal end and a distal end;
a needle driver on the distal end of the elongate shaft, the needle driver being operable to engage and rotate the needle in a circular path, the needle driver reciprocating between a drive stroke wherein the needle is rotated and a return stroke;
an actuator on the proximal end of the elongate shaft;
a drive rod in the elongate shaft, the drive rod operably connected to the needle driver;
a mechanical linkage connecting the actuator to the drive rod, the mechanical linkage comprising a sled axially traversable relative to the drive rod and a compressive force limiting spring positioned around the drive rod within the sled.
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Accused Products
Abstract
A surgical suturing device comprises an arced needle comprises a length of suture. An elongate shaft comprises a proximal end and a distal end. A needle driver is on the distal end of the elongate shaft operable to engage and rotate the needle in a circular path. The needle driver reciprocates between a drive stroke wherein the needle is rotated and a return stroke. A trigger is on the proximal end of the elongate shaft. A drive rod in the elongate shaft operably connects the trigger and the needle driver. Moving the trigger in a first direction actuates the needle driver through its drive stroke, and moving the trigger in a second direction actuates the needle driver through its return stroke. A spring is operably connected to the drive rod limiting a load transmitted through the drive rod. The spring may limit the load transmitted through the drive rod when the trigger is moved in a first direction.
360 Citations
6 Claims
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1. A surgical suturing device, comprising:
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an arced needle comprising a length of suture; an elongate shaft comprising a proximal end and a distal end; a needle driver on the distal end of the elongate shaft, the needle driver being operable to engage and rotate the needle in a circular path, the needle driver reciprocating between a drive stroke wherein the needle is rotated and a return stroke; an actuator on the proximal end of the elongate shaft; a drive rod in the elongate shaft, the drive rod operably connected to the needle driver; a mechanical linkage connecting the actuator to the drive rod, the mechanical linkage comprising a sled axially traversable relative to the drive rod and a compressive force limiting spring positioned around the drive rod within the sled. - View Dependent Claims (2, 3, 4, 5)
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6. A surgical suturing device, comprising:
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an arced needle comprising a length of suture; an elongate shaft comprising a proximal end and a distal end; a needle driver on the distal end of the elongate shaft, the needle driver being operable to engage and rotate the needle in a circular path, the needle driver reciprocating between a drive stroke wherein the needle is rotated and a return stroke; an actuator on the proximal end of the elongate shaft; a drive rod in the elongate shaft, the drive rod operably connected to the needle driver; a rack and pinion drive interposed between the drive rod and the needle driver; and a mechanical linkage connecting the actuator to the drive rod, the mechanical linkage comprising a compressive force limiting spring.
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Specification