[Improved tumor stent for internal palliative urinary diversion].

Abstract

The disadvantages of high flexible endoureteral stents (DJ) in case of tumorinduced extrinsic ureteral compression are due to an insufficient vertical stability of the used stents leading to stent-compression and consecutive hydro- or pyonephrosis. The new developed tumor-stent used in case of tumor-induced ureteral compression is available from 6 to 8 French in diameter and 24 to 32 cm in length. The corpus consists of a combination of high-stability plastics but is of sufficient elasticity in length. Both ends consist of extremely elastic J-parts guaranteeing an exact fixation. As against common DJ's with the same outside-diameter the new stent has a comparable interior diameter and compared to used "old" tumor stents promises a higher interior flow in case of extrinsic diseases. The application can be undertaken in well-known technique, needs no special instrumentation and no learning-curve. To date 52 stents at our urologic departments were placed without any problems, the latest remaining for 15 months. Tumor-induced compression or a higher rate of encrustation could not be seen. All patients tolerated these stents well. In our opinion the new stabilized endoureteral stent can be seen as a better solution instead of percutaneous nephrostomy or frequent stent changing in patients with tumor induced extrinsic ureteral compression.

• Authors: R W Schlick, E Seidl, J Küster, T Kalem, P R Hanke, B Planz
• Journal: Der Urologe. Ausg. A (Urologe A) Vol. 38 Issue 2 Pg. 138-42 (Mar 1999) ISSN: 0340-2592 [Print] Germany
• Vernacular Title: Neu entwickelter Tumorstent zur internisierten palliativen Harnableitung.
• PMID: 10231934 (Publication Type: English Abstract, Journal Article)

Topics

• Elasticity
• Equipment Design
• Female
• Follow-Up Studies
• Humans
• Male
• Palliative Care
• Stents
• Ureteral Neoplasms (etiology, therapy)
• Ureteral Obstruction (etiology, therapy)
• Urinary Diversion (instrumentation)
• Urodynamics (physiology)