US endoscopy Roth Net Instrucciones De Uso página 3

5. Endoscopically position the Roth Net

For best results, the object should be centered and proximal in the net prior to net closure, however for food bolus
retrieval techniques may vary.
6. For food bolus retrieval

Optimal technique using a Roth Net
upon the type of object/bolus or clinical conditions faced during retrieval (i.e. bolus position, consistency, anatomical,
or disease issues such as strictures, bolus-induced ulcerations, etc.).
 One clinically observed technique is described in the following steps:
1. Sufficiently insufflate the esophagus.
2. Position the tip of the device sheath alongside the outer edge of the food bolus.
3. While the assistant partially opens the net; the clinician simultaneously withdraws the proximal end of the device
0.5 to 1.5 cm from the biopsy inlet (this maneuver results in positioning the open net midline to the bolus).
4. Deflect the tip of the endoscope to drape the net across the proximal face of the bolus.
5. Once this is accomplished, close the net until resistance is felt.
6. Remove the bolus under endoscopic observation, confirming sufficient capture of the bolus throughout its
extraction.
7. If repositioning of the net on the bolus is necessary, repeat the capture sequence described in steps 1-7 above.

Closing or retracting the handle too tightly may cause damage to the device's flat wire.
 Do not exert excessive "bending" pressure on the open (deployed) device; doing so may disfigure
 Keep gentle traction on the device during retrieval so that the retrieved object does not become

Retrieved food should be removed from the net by rinsing the net in a basin of water; do not "pick" retrieved food from
the net with a finger as this may damage the net.
7. Once entrapment is accomplished, retract the handle until it stops (see Fig. 2).
8. Keep the device closed by applying continuous traction to the handle.

Excess force may cause the net to rupture or tear.
9. Grasp and retract the proximal end of the device to bring the collected object close to the tip of the endoscope making sure not
to obscure the endoscopic view.

Endoscopic observation is necessary during extubation as not to lose sight of the object, bolus, polyp, or surrounding
tissue during removal.
10. When the object is secure in the net, withdraw the object together with the endoscope from the patient.

Do not retract the device and the object into the endoscope, this could cause damage to the endoscope and the device.
11. Once the endoscope and the device have been withdrawn, the retrieved object, bolus, or polyp can be removed from the net by
advancing the handle forward to open the device (see Fig. 1).

Specimens should be prepared per standard technique for histologic evaluation.
12. Confirm that the device continues to open and close smoothly prior to reinsertion into the patient (if removing additional
objects is required).

Rinsing the net in sterile water may be required if debris needs to be removed.

Retract the handle until the net is completely withdrawn into its sheath (see Fig. 3).
13. Repeat steps 1-12 as needed.
Once the object or objects have been retrieved and removed from net, retract the net into the catheter and remove the device from the
endoscope. (see Fig. 3).
For Product 00711169 (Roth Net
00732305 Rev B
®
retriever over the object, bolus, or polyp.
either the flat wire and/or the wire frame's shape.
loosened, dislodged, or aspirated into the trachea.
® retriever - select)
FIG. 1
® retriever - select to remove a food bolus or any foreign object will vary depending
FINGER RING HANDLE
MOVE IN THIS DIRECTION TO DEPLOY
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