Force Limited Needle Driver

• US 20150351746A1
• Filed: 06/06/2014
• Published: 12/10/2015
• Est. Priority Date: 06/06/2014
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Martin, David T., Geiger, Daniel L.
• Granted Patent: US 10,004,490 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0625 the needle being specially adapted to interact with the manipulator, e.g. being ridged to snap fit in a hole of the manipulator A61B17/06109 takes precedence
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/0608 J-shaped
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots
• CPC Class Codes: A61B 2217/007 with irrigation system

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.

Claims

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;

a trigger on the proximal end of the elongate shaft;

a drive rod in the elongate shaft, the drive rod operably connecting the trigger and the needle driver, wherein 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 operably connected to the drive rod, the spring limiting a load transmitted through the drive rod.

2. The surgical suturing device of claim 1, wherein the spring limits the load transmitted through the drive rod when the trigger is moved in a first direction.

3. 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 force limiting spring.

4. The surgical suturing device of claim 3, further comprising a rack and pinion drive interposed between the drive rod and the needle driver.

5. The surgical suturing device of claim 3, wherein the mechanical linkage comprises a sled axially traversable relative to the drive rod, and the spring is positioned around drive rod and within the sled.

6. The surgical suturing device of claim 5, wherein the actuator is a trigger, the device further comprising a link connecting the trigger to the sled.

7. The surgical suturing device of claim 5, wherein the sled has a distal end and a proximal end, and the drive rod has a flange, the spring is interposed between the flange and the distal end of the sled, and the flange directly engages the proximal end of the sled.

8. The surgical suturing device of claim 7, further comprising a link connecting the sled to the actuator.