In-Depth Studies
Clinical Design Basis & Rationale
- PocketStrainer is designed to support accurate urine filtration during kidney stone recovery.
- Its design aligns with commonly accepted specimen collection practices used in both home and professional healthcare settings.
- Developed in collaboration with medical professionals. FDA-listed Class I medical device (510(k) exempt), manufactured in an FDA-registered facility. Multiple patents pending.
Safety Assurance
Materials & Safety
Every material is chosen for repeated, hygienic use:
- 1 Soft medical-grade silicone for comfortable handling
- 2 Precision 40-mesh screen in mill-certified 316L stainless steel for accurate filtration
- 3 Washable and reusable design for long-term use
Bulk & Institutional Orders
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Frequently Asked Questions
Yes — the ultra-fine 40-mesh (400 micron) stainless steel filter is designed to catch even small kidney stones that might otherwise be missed.
Yes. The NIH’s National Institute of Diabetes and Digestive and Kidney Diseases notes that “if you’re able to pass a kidney stone, a health care professional may ask you to catch the kidney stone in a special container” (NIDDK, Treatment for Kidney Stones). MedlinePlus patient guidance likewise says “you may be asked to try to catch your kidney stone. You can do this by collecting all of your urine and straining it” (MedlinePlus, Kidney stones – self-care). Always follow your own care team’s instructions.
Yes — PocketStrainer is made from BPA-free, medical-grade silicone and 316 stainless steel. The silicone is tested to ISO 10993-5 (cytotoxicity) and ISO 10993-23 (skin irritation) biocompatibility standards — non-cytotoxic, with a negligible irritation response — and the product is manufactured in an FDA-registered facility. Test reports are on file.
Yes — PocketStrainer is a Class I, 510(k)-exempt medical device listed with the FDA and manufactured in an FDA-registered facility in accordance with FDA guidelines. FDA registration and listing do not denote FDA approval or endorsement.
Yes — PocketStrainer is dishwasher safe (top rack recommended). You can also rinse it with warm water and soap for quick cleaning.
Yes — PocketStrainer is fully reusable and made from non-porous materials that are easy to clean and do not retain odors.
Simply rinse under running water and use mild soap if needed. For deeper cleaning, it can be placed in the dishwasher or soaked briefly in warm soapy water. Let it air dry before storing.
Many customers choose the 2-pack so they can keep one at home and one in a bag or travel kit — especially during active stone passage.
Many hospital-issued strainers are bulky and disposable. PocketStrainer is compact, reusable, and designed for everyday use — especially when you're away from home.
PocketStrainer ships in discreet, unbranded packaging — no mention of medical use on the outside.
Absolutely. PocketStrainer folds flat to under ½ inch thick and fits easily in a pocket, drawer, or travel bag. It looks like a compact everyday item — not a medical device.
We offer a 30-day money-back guarantee. If you're not satisfied for any reason, you can return it for a full refund.
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What Are You Waiting For?
Be prepared when it matters. PocketStrainer folds flat, goes where you go, and is ready the moment you need it — so the stone you pass makes it to the lab, not the toilet. Join thousands of customers who keep one on hand.
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