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RD180® THE RUNNING DEVICE®
Automated Laparoscopic Suturing Devices

UNLOADING SUTURE

AUTO-RELEASE Technique
PULL-OFF Technique
CLAMP Technique

There are three simple and convenient options for removal of used ferrules from the needle prior to reloading RD180®. The easiest method is the AUTO-RELEASE Technique as illustrated below. This technique automatically removes the suture and ferrule from the needle by simply pulling the lever fully forward. The next method is the PULL-OFF Technique as illustrated below. This rapid approach requires that an adequate length of suture remains attached to the ferrule throughout the unloading and does not utilize any other instruments. The third common unloading option, the CLAMP Technique, is also simple and fast, but it requires an additional grasping device, such as a needle driver, to grasp and remove the used ferrule from the needle.

 

This unloading technique requires that the needle with its engaged ferrule and suture must first be retracted back into the distal end of the device shaft. If they are not, simply squeeze and release the pink lever to pick up and retract the ferrule, suture, and needle. Once the ferrule, suture, and needle are retracted into the shaft, pull the pink lever fully forward to automatically remove the ferrule and suture off of the needle. Inspect and discard the used ferrule and suture.

As the name implies, the ferrule is simply pulled away from and off the needle by hand grasping and pulling the suture during this unloading technique. When adequate suture remains attached to the ferrule, ensure that the needle attached to the ferrule and suture is retracted in its resting position in the distal shaft. To avoid pulling the ferrule back through the suture track into its ferrule compartment across the jaw from the needle, orient the suture over the distal jaw as illustrated by the bent red arrow above. One brisk pull on the suture in a direction away from the needle typically pops the ferrule off from the needle to free the used ferrule and suture from the device. INSPECT that the ferrule remains attached to the suture and the needle and device are undamaged.

A surgical grasping clamp, such as a needle driver, can be effectively used to remove the ferrule from the needle. Since this approach requires an additional tool and typically slightly more time than the other techniques, this option is usually reserved for situations in which the AUTO-RELEASE Technique or the PULL-OFF Technique are not effective. Squeeze the devices lever to slightly advance the needle with its attached ferrule. Apply the tip of the jaws of the grasping tool, shown highlighted in yellow, only to the distal portion of the ferrule. Care must be taken to avoid damaging the needle with the grasper. Do not rock or rotate the ferrule with the grasper because such motion may bend, fatigue or break the needle tip. Push the pink lever fully forward to retract back the needle and to slide the tip of the needle out of the ferrule held in the grasper. Inspect that the ferrule has been successfully removed from the needle and that the needle and device are undamaged.

 

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