6mmx8mm and 8mmx8mm stents: The AXIOS™ Stent and Electrocautery-Enhanced Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size, that are adherent to the gastric or bowel wall and are free of solid debris. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst resolution.

10mmx10mm and 15mmx10mm stents: The AXIOS™ Electrocautery-Enhanced-Stent and Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size and walled-off necrosis ≥ 6 cm in size that are adherent to the gastric or bowel wall. Once placed, the AXIOS™ Stent functions as an access port allowing passage of standard and therapeutic endoscopes to facilitate debridement, irrigation and cystoscopy. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst or walled-off necrosis resolution.

The AXIOS™ Stent and Electrocautery-Enhanced Delivery System is indicated for use to facilitate transguodenal endoscopic drainage of the gallbladder in patients with acute cholecystitis who are at high risk for surgery.

20mmx10mm and 15mmx15mm stents: The AXIOS™ Electrocautery-Enhanced Stent and Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size and walled-off necrosis ≥ 6 cm in size that are adherent to the gastric or bowel wall. Once placed, the AXIOS™ Stent functions as an access port allowing passage of standard and therapeutic endoscopes to facilitate debridement, irrigation and cystoscopy. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst or walled-off necrosis resolution.

Device Description

AXIOS™ Stent:

The AXIOS™ Stent is a flexible, MR conditional, fully-covered, self-expanding braided nitinol stent, which comes preloaded into a delivery system. The AXIOS™ stent is designed with two flanges on each end to enable tissue plane apposition and a "saddle" in between the flanges to span the tissue implant distance.

Electrocautery-Enhanced Delivery System:

The AXIOS™ Electrocautery-Enhanced Delivery System consists of a catheter and an integrated handle with manual controls for positioning and deploying the AXIOS™ Electrocautery-Enhanced Delivery System is designed to be used in the gastrointestinal tract with commercially available echoendoscopes with a 3.7 mm diameter or larger working channel and is compatible with commercially available 0.035-inch insulated endoscopic guidewires.

The Electrocautery-Enhanced Delivery System connects with an off-the-shelf electrosurgical unit or generator that is compliant to IEC 60601-1-2 and IEC 60601-2-2.

The AXIOS™ Stent and Electrocautery-Enhanced Delivery System is provided sterile, disposable and intended for single use.

AI/ML Overview

This FDA 510(k) summary (K233318) for the Boston Scientific AXIOS Stent and Electrocautery-Enhanced Delivery System does not contain information about a study proving the device meets specific acceptance criteria in the context of an AI/human-in-the-loop performance evaluation.

Instead, this document focuses on demonstrating substantial equivalence to a previously cleared predicate device (DEN230019, K22011 "AXIOS Stent and Electrocautery-Enhanced Delivery System"). The core of the evidence presented is related to bench testing for use with a different Electrosurgical Unit (ESU), specifically the ERBE VIO 3.

Therefore, I cannot provide the requested information regarding acceptance criteria and performance data for an AI-based system, sample sizes for test and training sets, expert qualifications, or adjudication methods, as these details are not present in the provided text.

Based on the text, here's what can be extracted regarding the performance testing that was performed:

Summary of Device Acceptance Criteria and Performance (as per the provided document):

The document describes performance testing conducted to demonstrate equivalent settings for the AXIOS devices when used with a specific Electrosurgical Unit (ESU). The "acceptance criteria" in this context refer to demonstrating equivalence in performance with the new ESU compared to the ESU used during the original clearance, rather than a clinical performance metric like sensitivity or specificity for a diagnostic device.

1. Table of "Acceptance Criteria" and Reported Device "Performance"

Criteria Type	Acceptance Goal
Performance Equivalence	Achieve "equivalent performance between both ESUs" (Electrosurgical Units). This implies comparing functional outputs relevant to the device's operation. Specific quantitative values are not provided in this summary.
Safety & Effectiveness Impact	"updates to labeling do not affect safety, effectiveness, performance or function of the device." This is an overall claim of non-adverse impact from the change.

2. Sample Size Used for the Test Set and Data Provenance:

Sample Size: Not specified. The study states "bench testing" was performed.
Data Provenance: Not specified, but implied to be laboratory/bench data generated by Boston Scientific Corporation for this submission. The testing was based on "original clearance testing."

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications:

Not applicable. This was bench testing evaluating device function with a new ESU, not a clinical study requiring expert assessment for "ground truth" on patient outcomes or diagnoses.

4. Adjudication Method for the Test Set:

Not applicable. This was bench testing.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study was done:

No. This document focuses on demonstrating substantial equivalence through bench testing of the device with a different ESU, not a clinical comparative effectiveness study involving human readers or AI assistance.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) was done:

Not applicable. This device is a medical stent and delivery system, not an AI algorithm.

7. The type of ground truth used:

Bench Test Results / Engineering Specifications. The "ground truth" for this testing was established by comparing the performance with the new ESU to the baseline performance established with the previously tested ESU (300D ESU), likely against pre-defined engineering specifications for power output, current, impedance, or other relevant electrical and mechanical properties.

8. The sample size for the training set:

Not applicable. This is not an AI/machine learning device.

9. How the ground truth for the training set was established:

Not applicable. This is not an AI/machine learning device.

In summary, the provided FDA 510(k) summary focuses on demonstrating that a change (compatibility with a new ESU) to an already cleared device does not alter its safety or effectiveness. The study described is a bench test aimed at showing equivalence in the device's technical performance with the new ESU. It does not involve AI, human readers, or clinical ground truth derived from expert consensus or pathology.

Summary

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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food & Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

October 27, 2023

Boston Scientific Corporation Mr. Ian Broome Senior Regulatory Affairs Specialist 100 Boston Scientific Way Marlborough, Massachusetts 01752

Re: K233318

Trade/Device Name: AXIOS Stent and Electrocautery-Enhanced Delivery System (6 mm x8 mm); AXIOS Stent and Electrocautery-Enhanced Delivery System (8 mm x8 mm); AXIOS Stent and Electrocautery-Enhanced Delivery System (10 mm x10 mm); AXIOS Stent and Electrocautery-Enhanced Delivery System (15 mm x10 mm); AXIOS Stent and Electrocautery-Enhanced Delivery System (20 mm x10 mm); AXIOS Stent and Electrocautery-Enhanced Delivery System (15 mm x15 mm) Regulation Number: 21 CFR 876.4300 Regulation Name: Endoscopic Electrosurgical Unit and Accessories Regulatory Class: Class II Product Code: KNS Dated: September 29, 2023 Received: September 29, 2023

Dear Mr. Ian Broome:

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 (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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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

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Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).

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. 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 of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

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For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

Sincerely,

Glenn B. Bell -S

Glenn B. Bell, Ph.D Director DHT3A: Division of Renal, Gastrointestinal, Obesity and Transplant Devices OHT3: Office of Gastrorenal, ObGyn, General Hospital, and Urology Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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Indications for Use

Form Approved: OMB No. 0910-0120 Expiration Date: 07/31/2026 See PRA Statement below.

Submission Number (if known)
------------------------------	--

K233318

Device Name

AXIOS Stent and Electrocautery-Enhanced Delivery System (6mmx8mm) (M00553680): AXIOS Stent and Electrocautery-Enhanced Delivery System (8mmx8mm) (M00553690); AXIOS Stent and Electrocautery-Enhanced Delivery System (10mmx10mm) (M00553640); AXIOS Stent and Electrocautery-Enhanced Delivery System (15mmx10mm) (M00553650); AXIOS Stent and Electrocautery-Enhanced Delivery System (20mmx10mm) (M00553660); AXIOS Stent and Electrocautery-Enhanced Delivery System (15mmx15mm) (M00553670) Indications for Use (Describe)

6mmx8mm and 8mmx8mm stents: The AXIOS Stent and Electrocautery-Enhanced Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size, that are adherent to the gastric or bowel wall and are free of solid debris. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst resolution.

10mmx10mm and 15mmx10mm stents: The AXIOS Electrocautery-Enhanced-Stent and Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size and walled-off necrosis ≥ 6 cm in size that are adherent to the gastric or bowel wall. Once placed, the AXIOS Stent functions as an access port allowing passage of standard and therapeutic endoscopes to facilitate debridement, irrigation and cystoscopy. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst or walled-off necrosis resolution. The AXIOS Stent and Electrocautery-Enhanced Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of the gallbladder in patients with acute cholecystitis who are at high risk for surgery.

20mmx10mm and 15mmx15mm stents: The AXIOS Electrocautery-Enhanced Stent and Delivery System is indicated for use to facilitate transgastric or transduodenal endoscopic drainage of symptomatic pancreatic pseudocysts ≥ 6 cm in size and walled-off necrosis ≥ 6 cm in size that are adherent to the gastric or bowel wall. Once placed, the AXIOS Stent functions as an access port allowing passage of standard and therapeutic endoscopes to facilitate debridement, irrigation and cystoscopy. The stent is intended for implantation up to 60 days and should be removed upon confirmation of pseudocyst or walled-off necrosis resolution.

Type of Use (Select one or both, as applicable)

Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

CONTINUE ON A SEPARATE PAGE IF NEEDED.

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K233318 - Page 1 of 2
510(k) Summary		Prepared on: 2023-10-26
Contact Details		21 CFR 807.92(a)(1)
Applicant Name	Boston Scientific Corporation
Applicant Address	100 Boston Scientific Way Marlborough MA 01752 United States
Applicant Contact Telephone	+1 (508) 683-4000
Applicant Contact	Mr. Ian Broome, M.S., RAC
Applicant Contact Email	ian.broome@bsci.com
Device Name		21 CFR 807.92(a)(2)
Device Trade Name	AXIOS™ Stent and Electrocautery-Enhanced Delivery System (6mmx8mm) (M00553680); AXIOS™ Stent and Electrocautery-Enhanced Delivery System (8mmx8mm) (M00553690); AXIOS™ Stent and Electrocautery-Enhanced Delivery System (10mmx10mm) (M00553640); AXIOS™ Stent and Electrocautery-Enhanced Delivery System (15mmx10mm) (M00553650); AXIOS™ Stent and Electrocautery-Enhanced Delivery System (20mmx10mm) (M00553660); AXIOS™ Stent and Electrocautery-Enhanced Delivery System (15mmx15mm) (M00553670)
Common Name	Endoscopic electrosurgical unit and accessories
Classification Name	Unit, Electrosurgical, Endoscopic (With Or Without Accessories)
Regulation Number	876.4300
Product Code	KNS
Legally Marketed Predicate Devices		21 CFR 807.92(a)(3)
Predicate #	Predicate Trade Name (Primary Predicate is listed first)	Product Code
DEN230019, K22011	AXIOS Stent and Electrocautery-Enhanced Delivery System	KNS
Device Description Summary		21 CFR 807.92(a)(4)

AXIOS™ Stent:

Electrocautery-Enhanced Delivery System:

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The Electrocautery-Enhanced Delivery System connects with an off-the-shelf electrosurgical unit or generator that is compliant to IEC 60601-1-2 and IEC 60601-2-2.

The AXIOS™ Stent and Electrocautery-Enhanced Delivery System is provided sterile, disposable and intended for single use.

Intended Use/Indications for Use

21 CFR 807.92(a)(5)

Indications for Use Comparison

The indications for use of the proposed AXIOS™ Stent and Electrocautery-Enhanced Delivery System devices remain identical to the predicate device.

Technological Comparison

The technological characteristics of proposed AXIOS™ Stent and Electrocautery-Enhanced Delivery System are identical to the predicate device.

Non-Clinical and/or Clinical Tests Summary & Conclusions 21 CFR 807.92(b)

Performance testing (bench) was completed to demonstrate equivalent settings for AXIOS devices when used with the ERBE VIO 3 Electrosurgical Unit (ESU).

The testing conducted was based on original clearance testing for the AXIOS Stent and Electrocautery-Enhanced Delivery System, along with consultation of the ESU manufacturer.

Two phases of ESU testing were performed:

· Range Finding, to establish ideal effect range based on baseline created with 300D ESU;

· Confirmation Testing, to determine ideal settings output and perform statistical analysis to ensure equivalent performance between both ESUs.

Based on the results of bench testing, the substantially equivalent to the predicates. The updates to labeling do not affect safety, effectiveness, performance or function of the device.

21 CFR 807.92(a)(6)

Regulation Number and Section

§ 876.4300 Endoscopic electrosurgical unit and accessories.

(a)
Identification. An endoscopic electrosurgical unit and accessories is a device used to perform electrosurgical procedures through an endoscope. This generic type of device includes the electrosurgical generator, patient plate, electric biopsy forceps, electrode, flexible snare, electrosurgical alarm system, electrosurgical power supply unit, electrical clamp, self-opening rigid snare, flexible suction coagulator electrode, patient return wristlet, contact jelly, adaptor to the cord for transurethral surgical instruments, the electric cord for transurethral surgical instruments, and the transurethral desiccator.(b)
Classification. Class II (performance standards).