← Product Code [FAD](/submissions/GU/subpart-e%E2%80%94surgical-devices/FAD) · K163399 # Tria Firm Ureteral Stent (K163399) _Boston Scientific Corporation · FAD · Jun 22, 2017 · Gastroenterology, Urology · SESE_ **Canonical URL:** https://fda.innolitics.com/submissions/GU/subpart-e%E2%80%94surgical-devices/FAD/K163399 ## Device Facts - **Applicant:** Boston Scientific Corporation - **Product Code:** [FAD](/submissions/GU/subpart-e%E2%80%94surgical-devices/FAD.md) - **Decision Date:** Jun 22, 2017 - **Decision:** SESE - **Submission Type:** Traditional - **Regulation:** 21 CFR 876.4620 - **Device Class:** Class 2 - **Review Panel:** Gastroenterology, Urology - **Attributes:** Therapeutic ## Intended Use The Ureteral Stent is intended to facilitate drainage from the kidney to the bladder via placement endoscopically, fluoroscopically or during an open surgical procedure by a trained physician. ## Device Story Tria™ Firm Ureteral Stent; double-pigtail indwelling catheter; facilitates drainage from kidney to bladder. Constructed from Percuflex polymer using modified extrusion process for ultra-smooth surface topography; designed to minimize accumulation of urine calcium and magnesium salt deposits. Placed by physicians in clinical settings (endoscopic, fluoroscopic, or open surgery). Includes monofilament retrieval lines, straight stent positioner, and pigtail straightener. Provides clinical benefit by reducing salt encrustation during indwelling period. Healthcare providers use device to maintain ureteral patency; output is physical drainage path. ## Clinical Evidence Bench testing only. Evaluated bladder/renal coil length, flow rate, surface roughness, MRI safety, structural integrity (tensile/column strength), and biocompatibility (cytotoxicity, sensitization, irritation, systemic toxicity, muscle implantation, pyrogenicity). In vitro testing demonstrated statistically significant reduction in calcium and magnesium salt accumulation compared to competitive devices. No clinical data provided. ## Technological Characteristics Percuflex polymer construction; double-pigtail design; ultra-smooth surface topography via modified extrusion. Includes monofilament retrieval lines, straight stent positioner, and pigtail straightener. Sterile, single-use. No electronic components or software. ## Regulatory Identification A ureteral stent is a tube-like implanted device that is inserted into the ureter to provide ureteral rigidity and allow the passage of urine. The device may have finger-like protrusions or hooked ends to keep the tube in place. It is used in the treatment of ureteral injuries and ureteral obstruction. ## Predicate Devices - Contour™ Ureteral Stent ([K974541](/device/K974541.md)) ## Reference Devices - Percuflex™ Ureteral Stent ([K834468](/device/K834468.md)) - Advantix™ Pancreatic Stent ([K133700](/device/K133700.md)) - InLay Optima® Ureteral Stent ([K022447](/device/K022447.md)) ## Submission Summary (Full Text) > This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com. > > Innolitics is a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices, including [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/). {0}------------------------------------------------ Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is an abstract symbol composed of three stylized human profiles facing to the right, with flowing lines connecting them. Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002 June 22, 2017 Boston Scientific Corporation Christine Shoemaker Sr. Regulatory Affairs Specialist 100 Boston Scientific Way Marlborough, MA 01752 Re: K163399 > Trade/Device Name: Tria™ Firm Ureteral Stent Regulation Number: 21 CFR§ 876.4620 Regulation Name: Ureteral Stent Regulatory Class: II Product Code: FAD Dated: Mav 19, 2017 Received: May 22, 2017 Dear Christine Shoemaker: We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food. Drug. and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading. If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. {1}------------------------------------------------ You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance. You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Sincerely, # Benjamin R. Fisher -S Benjamin R. Fisher, Ph.D. Director Division of Reproductive, Gastro-Renal, and Urological Devices Office of Device Evaluation Center for Devices and Radiological Health Enclosure {2}------------------------------------------------ # Indications for Use 510(k) Number (if known) K163399 Device Name Tria™ Firm Ureteral Stent Indications for Use (Describe) The Ureteral Stent is intended to facilitate drainage from the kidney to the bladder via placement endoscopically, fluoroscopically or during an open surgical procedure by a trained physician. | Type of Use (Select one or both, as applicable) | | |-------------------------------------------------|--| |-------------------------------------------------|--| X Prescription Use (Part 21 CFR 801 Subpart D) | Over-The-Counter Use (21 CFR 801 Subpart C) #### CONTINUE ON A SEPARATE PAGE IF NEEDED. This section applies only to requirements of the Paperwork Reduction Act of 1995. #### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to: > Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov "An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number." {3}------------------------------------------------ #### SECTION 5 ## Boston Scientific ## 510(k) SUMMARY ## 510(k) Summary for Tria™ Firm Ureteral Stent #### A. Sponsor Boston Scientific Corporation Urology and Pelvic Health Division 100 Boston Scientific Way Marlborough, MA 01756 #### B. Contact Christine Shoemaker Sr. Specialist, Regulatory Affairs 508-683-4214 christine.shoemaker@bsci.com Or Lisa Sullivan Sr. Manager, Regulatory Affairs 508-683-4745 lisa.sullivan@bsci.com Date Prepared: June 21, 2017 #### C. Device Name Trade name: Tria™ Firm Ureteral Stent Common/usual name: stent, ureteral Classification Name: FAD - Stent, Ureteral #### D. Predicate and Reference Devices Contour™ Ureteral Stent (Boston Scientific) Predicate Trade name: Common/usual name: stent, ureteral Classification Name: FAD - Stent, Ureteral Premarket Notification: Contour™ (Modified Ureteral Indwelling Catheter/Stent) Ureteral Stent, K974541, Sep 02, 1998. The Contour Ureteral Stent has not been the subject of a design-related recall. PercuflexTM Ureteral Stent (Boston Scientific) Reference 1 Trade name: Common/usual name: stent, ureteral Classification Name: FAD - Stent, Ureteral Premarket Notification: K834468, Apr 20, 1984. Reference 2 Trade name: AdvantixTM Pancreatic Stent (Boston Scientific) Common/usual name: Biliary Catheters and Accessories Classification Name: FGE - Biliary Catheter and accessory Premarket Notification: K133700, May 14, 2014. {4}------------------------------------------------ #### SECTION 5 Boston Scientific #### 510(k) SUMMARY Reference 3 Trade name: InLay Optima® Ureteral Stent (Bard) Common/usual name: stent, ureteral Classification Name: FAD - Stent, Ureteral Premarket Notification: K022447, Jan 23, 2003. ### E. Device Description The Tria™ Firm Ureteral Stent is intended to facilitate drainage from the kidney to the bladder via placement endoscopically or fluoroscopically or during an open surgical procedure. It is constructed of the same Percuflex polymer as other stents currently marketed by BSC. Tria Firm utilizes a modified extrusion process to provide ureteral stents with an ultra-smooth surface topography. The Tria™ Firm stent has a double pigtail design and utilizes the same monofilament retrieval lines that are used on other BSC ureteral stents. Tria Firm is packaged with a standard straight stent positioner and a pigtail straightener that are currently provided with other ureteral stents marketed by Boston Scientific. The purpose of the Tria™ Firm Ureteral Stent is to provide physicians with a product that is aimed at addressing accumulation of urine salt deposits during indwelling. The proprietary surface technology on both the outside and inside of the stent provides maximum coverage from calcium and magnesium salt deposition. In vitro testing conducted on the Tria™ Firm Ureteral Stent showed a statistically significant lower level of urine calcium and magnesium salt accumulation on the stent surface compared to competitive devices. Correlation of in vitro data to clinical outcomes have not been established. #### F. Intended Use The Ureteral Stent is intended to facilitate drainage from the kidney to the bladder via placement endoscopically, fluoroscopically or during an open surgical procedure by a trained physician. #### G. Technological Characteristics The proposed Tria™ Firm Ureteral Stents have the same technological characteristics, fundamental ureteral stent design, and types of materials as the predicate device. A modified extrusion process provides an ultra-smooth surface. The device is packed using a thermoformed, multi-product tray. The lidded tray is then placed in a poly/Tyvek pouch that is heat sealed and labeled. The labeled pouch is placed into a labeled shelf carton along with a DFU. #### H. Substantial Equivalence A direct comparison of key characteristics has been performed and demonstrates that the proposed Tria™ Firm Ureteral Stent is substantially equivalent to the predicate device in terms of intended use, technological characteristics, types of {5}------------------------------------------------ ## SECTION 5 materials and performance characteristics. The proposed Tria Firm Ureteral Stent is as safe, as effective, and performs as well as the predicate device. ### I. Performance Testing (Bench Evaluation) Boston Scientific has conducted performance testing with samples aged at T=0 and 13-months Accelerated Aging in support of the new ureteral stent. Third party testing was performed in support of new claims for 1) minimizing the accumulation of urine calcium and magnesium salts, both with and without the presence of bacteria and 2) the proprietary surface technology on both the outside and inside of the stent providing maximum coverage from calcium and magnesium salt deposition . The results of the testing listed below support the determination of substantial equivalence. - Performance testing - bladder coil length, renal coil length/shape, working length, flow rate, surface roughness, MRI safety assessment - 0 Structural integrity testing - removal force (tensile strength), retrieval line to stent shaft tensile, column strength - Biological safety testing (biocompatibility) ● - Sterile barrier testing ● ## J. Biocompatibility Testing The following testing was performed to support the biocompatibility of the stents: - Cytotoxicity ● - Sensitization ● - Irritation ● - Acute Systemic Toxicity ● - Muscle Implantation ● - Material Mediated Pyrogenicity ● - Chemical analysis extractables ● - Risk assessment of potential toxicity . #### K. Conclusions Based on the information and data provided in this Traditional 510(k), the TriaTM Firm Ureteral Stents are substantially equivalent in intended use, design, principle of operation, technology, materials, and performance to the predicate Contour Ureteral Stents (K974541) and are safe and effective for their intended use. Tria Firm was also demonstrated to be substantially equivalent for specific properties when compared to other reference devices (BSC Percuflex (K834468), BSC Advantix (K133700), and Bard Inlay Optima (K022447)). 1 Proteus mirabilis was used as the microbial challenge due to its known urease production. --- **Source:** [https://fda.innolitics.com/submissions/GU/subpart-e%E2%80%94surgical-devices/FAD/K163399](https://fda.innolitics.com/submissions/GU/subpart-e%E2%80%94surgical-devices/FAD/K163399) **Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. 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