Introduction!

From the multidisciplinary network ENIUS, we want to create a meeting point for researchers, clinicians, industrial partners and manufacturers interested in accurate and up-to-date information related to urinary stent Research and Development. It will provide data regarding the leading research groups, manufacturers, patents, as well as recent scientific literature in this area of knowledge. 

This website is born with the purpose of being a source of information on all aspects related to urinary stent development, including the following: 



Most active authors in urinary stents topic
Most active countries invoved in urinary stent research
Citing patents in urinary stents by filling date
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Hydrustent® - HYDRUMEDICAL

Biodegradable Ureteral Stent intended to be used to temporarily drain obstructed ureter. The patented structural hydrogel has a homogenous degradation.

MiniJFil® - ROCAMED

New Ureteral Stent Generation with No Bladder Loop

JFil® - ROCAMED

New Ureteral Stent Generation with No Bladder Loop

Endosil® – ROCAMED

Silicone Double Loop Ureteral Stent

RocaJJ Soft – ROCAMED

PolyUrethane Double Loop Ureteral Stents

RocaJJ Soft Multilength – ROCAMED

Hydro-Coated PolyUrethane Ureteral Stent

RocaJJ Simple J - ROCAMED

PolyUrethane Simple Loop Ureteral Stent

GREEN-STAR - UROTECH

Double-J Ureteral Stent-Set Soft material, steerable with coupling

GREEN-STAR flexible length - UROTECH

Double-J Ureteral Stent-Set Soft material, flexible length

GREEN-STAR MONO - UROTECH

Mono-J Ureteral Stent-Set Soft material

GREEN-STAR steerable - UROTECH

Double-J Ureteral Stent-Set Soft material, steerable

INTUBATION STENT - UROVISION

Double-J Ureteral Stent Set Partial shaft thickening, also in the pigtails

MAGNETIC BLACK-STAR - UROTECH

Double-J Ureteral Stent-Set and Retrieval Device with magnet

MONOSTAR SOFT - UROVISION

Mono-J Ureteral Stent Set Soft material Ureteral

MONOSTAR STANDARD - UROVISION

Mono-J Ureteral Stent Set

ONKOVISION® TUMOR STENT - UROVISION

Double-J Ureteral Stent Set With a stainless steel helix

SPECIAL VISIOSTENT TUMORSTENT - UROVISION

Double-J Ureteral Stent Set

VISIOFLUX - UROVISION

Double-J Ureteral Stent set For reducing bladder irritation

VISIOLIX COMPLETE SET - UROSVISION

Double-J Ureteral Stent Set with Ureteral Catheter

VISIOMATIC® - UROVISION

Double-J Ureteral Stent Set Steerable with VISIOMATIC® Discharge System

VISIOMATIC® SOFT - UROVISION

Double-J Ureteral Stent Set Soft material, steerable with VISIOMATIC® discharge system

VISIOMATIC® TUMORSTENT - UROVISION

Double-J Ureteral Stent Set Steerable with VISIOMATIC® Discharge System

VISIOSTAR COMPLETE SET - UROVISION

Double-J Ureteral Stent Set with Ureteral Catheter

VISIOSTAR ESWL - UROVISION

Double-J Ureteral Stent Set With special profile

VISIOSTAR INTRAOPERATIVE - UROVISION

Double-J Ureteral Stent Set

VISIOSTAR SOFT

Double-J Ureteral Stent Set Soft material

VISIOSTAR Standard - UROVISION

Double-J Ureteral Stent Set

VISIOSTAR Standard flexible length - UROVISION

Double-J Ureteral Stent Set Flexible length

VISIOSTAR Standard steerable - UROVISION

Double-J Ureteral Stent Set Steerable

VISIOSTENT STENOSIS - UROVISION

Double-J Ureteral Stent Set Partial shaft reinforcement Ureteral

WHITE STAR Double-J Ureteral Stent-Set - UROTECH

Double-J Ureteral Stent-Set Treated with PC, steerable with coupling

WHITE STAR flexible length - UROTECH

Double-J Ureteral Stent-Set Flexible length

WHITE-STAR ESWL - UROTECH

Double-J Ureteral Stent-Set With special profile

WHITE-STAR INTRAOPERATIVE - UROTECH

Double-J Ureteral Stent-Set Round tip

WHITE-STAR MONO - UROTECH

Mono-J Ureteral Stent-Set

WHITE-STAR steerable - UROTECH

Double-J Ureteral Stent-Set Steerable

WHITE-STAR STENOSIS - UROTECH

Stenosis Stent-Set Partial shaft enlargement

YELLOW-STAR - UROTECH

Double-J Ureteral Stent-Set

YELLOW-STAR flexible length - UROTECH

Double-J Ureteral Stent-Set Treated with PC, flexible length

YELLOW-STAR steerable - UROTECH

Double-J Ureteral Stent-Set Treated with PC, steerable

YELLOW-STAR TUMOR-STENT - UROTECH

Double-J Ureteral Stent-Set Treated with PC

YELLOW-STAR TUMOR-STENT steerable - UROTECH

Double-J Ureteral Stent-Set Treated with PC, steerable

Biosoft® duo ureter Stent - COLOPLAST

Dual durometer designed for easy insertion and placement while retaining great flexibility for patient comfort

Silicone double loop ureteral stents - COLOPLAST

The remarkable biocompatibility and flexibility of silicone makes it the gold standard material for long-term implantation.

Stents without eyes on the straight section - COLOPLAST

Dedicated to cancer treatment
Available in soft or firm material

Persistent™ - Q Urological

Structural Hydrogel Ureteral Stent

Polyurethane (PU-R & PU-S) double loop ureteral stents - COLOPLAST

Double loop ureteral stents

Tumor stent - COLOPLAST

Palliative drainage in case of ureteral compressions
Reinforced internal layer for excellent resistance to compression

Vortek® double loop ureteral stents - COLOPLAST

Dual durometer design for easy insertion and placement while retaining great flexibility for patient comfort

Vortek® hydro-coated double loop ureteral stents - COLOPLAST

Dual durometer design for easy insertion and placement while retaining great flexibility for patient comfort.
The hydrophilic coating facilitates the advancement of the stent.

Stenostent® - COLOPLAST

For ureteral stenosis
Reinforced 12 Ch/Fr body stent with 8 Ch/Fr loops

Pyelostent® - COLOPLAST

For pyeloureteral junction syndrome treatment
8 Ch/Fr stent while the renal pelvis section is 12 Ch/Fr

Bander Ureteral Diversion Stent - Cook Medical

Used for intraoperative placement to stent the ureter during ureteroileal conduit construction and continent urinary diversions.

Black Silicone Filiform Double Pigtail Ureteral Stent - Cook Medical

Used for temporary internal drainage from the ureteropelvic junction to the bladder. The set includes a stent, a wire guide, and a stent positioner.

C-Flex® Double Pigtail Ureteral Stent - Cook Medical

Used for temporary internal drainage from the ureteropelvic junction to the bladder. C-Flex Double Pigtail Ureteral Stent Sets have been employed to relieve obstruction in a variety of benign, malignant, and post-traumatic conditions. These stents may be placed using endoscopic, percutaneous, or ope

Greene Renal Transplant Stent - Cook Medical

Used to establish temporary internal drainage from the ureteropelvic junction to the bladder following renal transplant. The stent has nonradiopaque ink bands. The set includes a stent, a wire guide, a catheter, and a stent positioner.

Resonance® Metallic Ureteral Stent - Cook Medical

Used for temporary stenting of the ureter in adult patients with extrinsic ureteral obstruction. This stent is intended for one-time use.

Universa® Firm Ureteral Stent Set with Hydrophilic Coating and Monofilament Tether - Cook Medical

Used for temporary internal drainage from the ureteropelvic junction to the bladder. Universa stents have AQ® hydrophilic coating, a monofilament tether, and graduation marks. The set includes a stent with pigtail straightener, a stent positioner with radiopaque tip, and a wire guide.

Universa® Soft Ureteral Stent Set with Hydrophilic Coating and Monofilament Tether - Cook Medical

Used for temporary internal drainage from the ureteropelvic junction to the bladder. Universa stents have AQ® hydrophilic coating, a monofilament tether, and graduation marks. The set includes a stent with pigtail straightener, a stent positioner with radiopaque tip, and a wire guide.

BARDEX® Double Pigtail Soft Stent - BD Bard

BARD® provides a wide variety of ureteral stents. The BARDEX® stent is a polyurethane stent and is packaged with an attached suture for ease of removal. The stents are packaged individually, sterile, for single use.

FLUORO-4™ Silicone Ureteral Stent - BD Bard

BARD® FLUORO-4™ silicone ureteral stents have the insertion advantages found with urethane stents plus the biocompatibility of silicone stents. The silicone/tantalum formulation is highly radiopaque under imaging (radiology or fluoroscopy). It is packaged with a .038" lubricious coated guidewire for

INLAY OPTIMA® Ureteral Stent - BD Bard

The INLAY OPTIMA® stent continues the legacy of the BARD® INLAY® stent.

INLAY® Ureteral Stent - BD Bard

BARD® offers multiple stent choices in design, length, and coating to assure you the right stent match with each procedure and anatomical requirement. The INLAY® ureteral stent offers many advantages.

Urinary Diversion Stent - BD Bard

BD Urinary Diversion Stents have been designed to provide secure placement in the renal pelvis while allowing drainage of urine from the kidney to an external stoma.

Latest scientific papers in urinary stents
Cached version 2021-09-08 12:39:52

[HTML][HTML] Comparative study of renal drainage with different ureteral stents subject to extrinsic ureteral obstruction using an in vitro ureter-stent model

Y Shilo, J Modai, D Leibovici, I Dror, B Berkowitz - BMC urology, 2021 - Springer
To compare the efficacy of different ureteral stents subject to extrinsic ureteral obstruction
(EUO), in a controlled in vitro stented ureter experiment. We employ an in vitro ureter-stent
experimental set-up, with latex tubing simulating flexible ureters attached to vessels …

Ureteral stents cannot decrease the incidence of ureteroileal anastomotic stricture and leakage: A systematic review and meta-analysis

YL Peng, K Ning, ZS Wu, ZY Li, MH Deng… - International Journal of …, 2021 - Elsevier
Background The ileal conduit and ileal orthotopic neobladder were the most popular
methods for urinary diversion following radical cystectomy. Stenting the anastomosis of ileo-
ureter or ureter-neobladder was a common practice. However, it is still controversial if …

Preparing and characterizing biodegradable materials for ureteral stents

H Cui, K Zhang, C Gao, Y Kang… - Polymers for …, 2021 - Wiley Online Library
The development and application of biodegradable ureteral stents is of clinical significance
for patients with ureteral stenosis and obstruction. We prepared five types of degradable
monofilament, namely poly‐L‐lactide, poly (L‐lactide‐co‐glycolide)(85% L‐lactide, 15 …

Tandem ureteral stents drainage lowers renal pelvis pressure in malignant ureteral obstruction: Experimental and computational models

M Haifler, N Kleinmann, D Weiss - Journal of Biomechanics, 2021 - Elsevier
Malignant ureteral obstruction may lead to impaired renal function and requires drainage by
a percutaneous nephrostomy tube or an internal ureteric stent. Usage of stiff tandem ureteral
stents may decrease stent failure rates. In this paper we combined computational and in vitro …

[HTML][HTML] Heparin coating in biodegradable ureteral stents does not decrease bacterial colonization—assessment in ureteral stricture endourological treatment in …

F Soria, E Julia, T Fernandez, A Budia… - Translational …, 2021 - ncbi.nlm.nih.gov
Background We assessed an antireflux biodegradable heparin-coated ureteral stent
(BraidStent®-H) in an animal model comparative study after endoscopic treatment of
ureteral strictures. Methods A total of 24 female pigs underwent initial endoscopic …

Technical Notes on Fluoroscopy-Guided Removal of Metallic Ureteral Stents

C Chen, SW Kim, JH Shin, HH Chu, HL Li - Journal of Vascular and …, 2021 - Elsevier
This manuscript describes various techniques for fluoroscopy-guided removal of metallic
ureteral stents. Fifteen patients underwent 17 fluoroscopy-guided removal procedures of 22
metallic ureteral stents. The simple or modified snare or retrieval hook technique was …

Use of routine ureteral stents in cesarean hysterectomy for placenta accreta

F Crocetto, R Esposito, G Saccone… - The Journal of …, 2021 - Taylor & Francis
Objective: To evaluate benefits of use of ureteral stents in association with cesarean
hysterectomy in case of placenta accreta. Methods: This was a single center, cohort study.
Clinical records of singleton pregnancies with placenta accreta who underwent cesarean …

Amphiphilic diblock copolymers inhibit the formation of encrustation on the surface of biodegradable ureteral stents in vitro and in vivo

Y Zhang, J Qi, H Chen, C Xiong - Colloids and Surfaces A: Physicochemical …, 2021 - Elsevier
Ureteral stents have been used to treat a variety of urinary diseases for decades. However,
the complication of encrustation often impedes its therapeutic effectiveness and service after
indwelling in human body. In the present study, in order to surmount this problem …

[HTML][HTML] Patients with encrusted ureteral stents can be treated by a single session combined endourological approach

RI Lopes, R Perrella, CH Watanabe, F Beltrame… - International braz j …, 2021 - SciELO Brasil
Purpose: To describe our experience in the management of retained encrusted ureteral
stents using a single session combined endourological approach. Materials and Methods:
Patients with retained encrusted ureteral stents who had been submitted to a single session …

[HTML][HTML] 10-Year Experience with Reinforced Ureteral Stents for Malignant Ureteral Obstruction

B Vogt, LH Blanchet - Research and Reports in Urology, 2021 - ncbi.nlm.nih.gov
Materials and Methods We performed an analysis of 156 patients with MUO drainage at a
single institution from June 2009 to June 2019. Results Of the 156 patients, 128 (82.1%)
died with a mean survival time of 15.3±14.4 months after the first ureteral stent procedure …

Failure of ureteral stents subject to extrinsic ureteral obstruction and stent occlusions

T Amitay-Rosen, A Nissan, Y Shilo, I Dror… - … Urology and Nephrology, 2021 - Springer
Purpose To quantify the occurrence of stent failure and the dynamic behavior of urine flow in
ureter-stent systems, including the relative flow in the ureter and stent lumina, subject to
various degrees of ureter and stent blockage. Methods Numerical simulations based on …

Functional Properties of Polyurethane Ureteral Stents with PLGA and Papaverine Hydrochloride Coating

M Antonowicz, J Szewczenko, J Jaworska… - International Journal of …, 2021 - mdpi.com
Despite the obvious benefits of using ureteral stents to drain the ureters, there is also a risk
of complications from 80–90%. The presence of a foreign body in the human body causes
disturbances in its proper functioning. It can lead to biofilm formation on the stent surface …

HEPARIN AS AN ANTIBACTERIAL COATING ON BIODEGRADABLE URETERAL STENTS: EXPERIMENTAL STUDY OF BRAIDSTENT®-H

JE de la Cruz Conty, A Budía Alba… - British Journal of …, 2021 - academic.oup.com
INTRODUCTION The aim of this study is to assess the effectiveness of heparin to inhibit the
development of early bacteriuria as a coating for biodegradable ureteral stents. MATERIAL
AND METHODS The BraidStent®-H biodegradable stent, whose heparin coating is …

Show Me How Video: Straight-Up Approach to Bedside Ureteral Stents

J Bailey, GH Rosen, KS Murray - Urology, 2021 - goldjournal.net
Objective To demonstrate placement of bedside double-j ureteral stents in an Emergency
Department or hospital floor setting. Background Ureteral stent placement is a potentially
lifesaving intervention and is one of the most common procedures performed by urologists …

Internal Coating of Ureteral Stents with Chemical Vapor Deposition of Parylene

SF Bröskamp, G Franz, D Jocham - Coatings, 2021 - mdpi.com
Ureteral balloon catheters and ureteral stents are implanted in large quantities on a daily
basis. They are the suspected cause for about a quarter of all the nosocomial infections,
which lead to approx. 20,000 deaths in Germany alone. To fight these infections, catheters …

Risk factors for primary failure of metallic ureteral stents: experience from a tertiary center

JS Hsu, CY Huang, KL Liu, PM Chow - Journal of endourology, 2021 - liebertpub.com
Introduction: We provide primary patency rate of metallic ureteral stents in cancer patients
and investigate the factors affecting primary patency. Methods: All cancer patients who had
received metallic stents for malignant ureteral obstruction between July 2009 and November …

Development and Validation of the Stent Tracking Algorithm Registry for Monitoring and Retrieving Forgotten Ureteral Stents

TJ Kim, KS Lee, D Kim, HK Ahn, CH Hong… - Journal of …, 2021 - liebertpub.com
Purpose: Forgotten ureteral stents are associated with safety issues, increased cost, and
medicolegal disputes. Tracking ureteral stents is cumbersome because of the variety in
placement periods. We developed and validated an electronic medical record (EMR) system …

Use of metallic and polymeric ureteral stents in malignant ureteral obstruction

M Ohtaka, T Kawahara, Y Hayashi… - BJUI …, 2021 - Wiley Online Library
Background Malignant ureteral obstruction (MUO) is often caused by advanced intra‐
abdominal cancers. Effective management must be attempted, but the treatment policy is
unclear. Metallic ureteral stents are one of the latest options in managing MUO. Metallic …

[HTML][HTML] The Resonance and the Allium ureteral stents in the treatment of non-malignant refractory ureterostenosis

W Gao, T Xing, T Ou - BMC urology, 2021 - bmcurol.biomedcentral.com
Refractory non-malignant ureterostenosis is challenging to treat. The experience to treat the
stenosis primarily cause by retroperitoneal fibrosis with the Resonance and Allium metallic
stent is still limited. We aim to evaluate the efficacy and safety of these two stents and …

Placement of ureteral stents in three rabbits for the treatment of obstructive ureterolithiasis

H Rembeaux, I Langlois, S Burdick… - Journal of Small …, 2021 - Wiley Online Library
Management of ureteral obstruction with stenting is often associated with a lower rate of
complications than ureterotomy in domestic carnivores, but this treatment has not been
previously evaluated in rabbits. Three rabbits (7, 6 and 10 years old) were diagnosed with …
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Ureteral stents clinical trials
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This website also allows contacting with members of the ENIUS network (European network of multidisciplinary to improve Research in Urinary Stents. CA16217). Please send your queries to the following email address: eniuscost@gmail.com 

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