Below is an educational, technical answer to a question many patients and clinicians ask. Stone management devices include stone extraction baskets, which the site FAQ describes as wire-mesh devices deployed through a ureteroscope to capture ureteral or renal stones, with tipless designs intended to allow safer engagement without mucosal trauma. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Urinary Drainage, Stone Management, and Incontinence
This clinical area covers urinary drainage, stone management, and the treatment of incontinence, using devices that maintain or restore the flow of urine and support the management of stones. Stone management devices include stone extraction baskets, which the site FAQ describes as wire-mesh devices deployed through a ureteroscope to capture ureteral or renal stones, with tipless designs intended to allow safer engagement without mucosal trauma. Device selection across drainage, stone, and incontinence applications is determined by the treating urologist based on the anatomy, indication, and patient factors.
How long can a ureteral stent stay in?
Ureteral stents are intended for a defined indwelling period, and manufacturers specify a maximum dwell time in the device documentation to limit risks such as encrustation. Leaving a stent beyond its intended period can increase the likelihood of encrustation and other complications described in the literature. The appropriate dwell time depends on the stent, the indication, and the individual patient. The exact duration and timing of removal or exchange are determined by the treating urologist.
What This Means in Practice
All INVAMED urology devices are intended for use by trained clinicians under appropriate guidance and in accordance with the IFU. Material and surface treatments, such as polyurethane with a phosphorylcholine or hydrophilic option, can influence insertion and the indwelling experience. Ureteral stent length and diameter (in French) are matched to the patient's anatomy to support drainage and reduce discomfort.
Key Considerations
- Material and surface treatments, such as polyurethane with a phosphorylcholine or hydrophilic option, can influence insertion and the indwelling experience.
- Ureteral stent length and diameter (in French) are matched to the patient's anatomy to support drainage and reduce discomfort.
- Percutaneous nephrostomy is generally reserved for when internal ureteral stenting is not possible, as noted in the site FAQ, and is performed under image guidance.
Frequently Asked Questions
Who decides which urology device is appropriate?
A qualified urologist selects the device based on the anatomy and indication; this article is educational and not a treatment recommendation.
How long can a ureteral stent stay in place?
Ureteral stents have a defined maximum dwell time stated in the device documentation to limit encrustation and other risks, and the exact timing of removal or exchange is set by the urologist.
What is a tipless stone basket?
Per the site FAQ, a stone extraction basket is a wire-mesh device deployed through a ureteroscope, and tipless designs are intended to allow safer engagement of a stone without mucosal trauma.
About INVAMED
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Clinical and Technical Context
Guidewire selection is made by the operator based on the anatomy and the devices being delivered. Percutaneous nephrostomy is generally reserved for when internal ureteral stenting is not possible, as noted in the site FAQ, and is performed under image guidance. The dwell time and choice of stent are determined by the urologist according to the clinical situation. Device selection across drainage, stone, and incontinence applications is determined by the treating urologist based on the anatomy, indication, and patient factors. Stone management devices include stone extraction baskets, which the site FAQ describes as wire-mesh devices deployed through a ureteroscope to capture ureteral or renal stones, with tipless designs intended to allow safer engagement without mucosal trauma. Adhering to the intended stent dwell time is emphasized to limit encrustation and related complications. Incontinence is addressed with mid-urethral slings such as trans-obturator tape (TOT) and tension-free vaginal tape (TVT), while general urinary drainage relies on Foley and suprapubic catheter systems. Baskets are used within a broader endourological approach that may also involve laser or other lithotripsy as determined by the urologist.
Related on INVAMED
- Urology & Incontinence Management — product category
- How do you relieve ureteral stent pain?
- Can you live a normal life with a nephrostomy tube?
- UroFlow Ureteral Stents: What Clinicians and Buyers Should Know
Important Disclaimer
This content is educational and technical in nature and must not be interpreted as medical advice or as a promise of any clinical outcome. Individual results depend on many factors and can only be evaluated by a treating physician. Figures attributed to INVAMED reflect manufacturer or published data and are not a guarantee of results. All INVAMED devices are to be used by trained clinicians per the approved IFU, and availability is subject to local regulatory status.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.