The proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are indicated for clip placement within the gastrointestinal (GI) tract for the purpose of: 1. Endoscopic marking 2. Hemostasis for: Mucosal/sub-mucosal defects < 3 cm Bleeding ulcers Arteries < 2 mm Polyps < 1.5 cm in diameter Diverticula in the colon Prophylactic clipping to reduce the risk of delayed bleeding post lesion resection 3. Anchoring to affix jejunal feeding tubes to the wall of the small bowel; and Anchoring to affix fully covered esophageal self-expanding metal stents to the wall of the esophagus 4. As a supplemental closure method of luminal perforations < 20 mm that can be treated conservatively
Device Story
Sterile, single-use, radiopaque endoscopic clipping system; consists of delivery catheter, handle assembly, and clip. Clip components: stainless-steel capsule/arms, cobalt chrome yoke, styrene tension breaker. Used in GI tract via endoscope (working channel ≥2.8 mm). Physician operates handle to deploy clip; clip jaws allow up to five open/close cycles for repositioning before final deployment. Resolution 360 and 360 ULTRA models feature distal rotation capability. Device provides mechanical tissue approximation for hemostasis, marking, anchoring, or perforation closure. Benefits include reduced bleeding risk and secure fixation of stents/tubes.
Clinical Evidence
Bench testing only. Compliance with FDA MR Safety Guidance (May 2021) verified via ASTM F2052 (displacement force), ASTM F2213 (torque), ASTM F2182 (RF heating), and ASTM F2119 (image artifacts).
Technological Characteristics
Materials: stainless-steel (capsule/arms), cobalt chrome (yoke), styrene (tension breaker). Radiopaque. Working lengths: 155cm/235cm. Compatible with endoscopes ≥2.8 mm. Mechanical actuation. No software/electronics.
Indications for Use
Indicated for patients requiring endoscopic clip placement in the GI tract for marking, hemostasis (mucosal/sub-mucosal defects <3cm, bleeding ulcers, arteries <2mm, polyps <1.5cm, colonic diverticula), prophylactic clipping post-resection, anchoring of jejunal feeding tubes or esophageal stents, and supplemental closure of luminal perforations <20mm.
Regulatory Classification
Identification
A hemorrhoidal ligator is a device used to cut off the blood flow to hemorrhoidal tissue by means of a ligature or band placed around the hemorrhoid.
Special Controls
*Classification.* Class II (special controls). Except for a hemostatic metal clip intended for use in the gastrointestinal tract, the device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.
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September 14, 2022
Boston Scientific Corporation Jia Huang Principal Regulatory Affairs Specialist 100 Boston Scientific Way Marlborough, MA 01752
Re: K222503
Trade/Device Name: Resolution Clip, Resolution 360 Clip, Resolution 360 ULTRA Clip Regulation Number: 21 CFR 876.4400 Regulation Name: Hemorrhoidal ligator Regulatory Class: Class II Product Code: PKL Dated: August 16, 2022 Received: August 18, 2022
Dear Jia Huang:
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. 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 located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pm.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 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. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21
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CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safetyreporting-combination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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 https://www.fda.gov/medical-devices/medical-device-safety/medicaldevice-reporting-mdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-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-devices/device-advicecomprehensive-regulatory-assistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@tda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Shanil P. Haugen, Ph.D Assistant 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
510(k) Number (if known) K222503
Device Name Resolution™ Clip Resolution 360™ Clip Resolution 360™ ULTRA Clip
Indications for Use (Describe)
The proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are indicated for clip placement within the gastrointestinal (GI) tract for the purpose of:
- 1. Endoscopic marking
- 2. Hemostasis for:
- · Mucosal/sub-mucosal defects < 3 cm
- Bleeding ulcers
- Arteries < 2 mm
- · Polyps < 1.5 cm in diameter
- · Diverticula in the colon
• Prophylactic clipping to reduce the risk of delayed bleeding post lesion resection
- 3. Anchoring to affix jejunal feeding tubes to the wall of the small bowel; and
- Anchoring to affix fully covered esophageal self-expanding metal stents to the wall of the esophagus
4. As a supplemental closure method of luminal perforations < 20 mm that can be treated conservatively
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|
| <span style="text-decoration: underline;">X</span> Prescription Use (Part 21 CER 801 Subpart D) | Over-The-Counter Use (21 CER 801 Subpart C) |
|-------------------------------------------------------------------------------------------------|---------------------------------------------|
|-------------------------------------------------------------------------------------------------|---------------------------------------------|
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Boston Scientific Corporation 300 Boston Scientific Way Marlborough, MA 01752-1234 (508) 683-4000 www.bostonscientific.com
### 510(k) Summary for Resolution Clip, Resolution 360 Clip, Resolution 360 ULTRA Clip
#### 1. Submitter
Boston Scientific Corporation 100 Boston Scientific Way Marlborough, MA 01752
Contact: Jia Huang Principal Regulatory Affairs Specialist Tel: 617-912-0826 Date Prepared: August 16, 2022
#### 2. Proposed Device
Trade Name: Resolution™ Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400 Product Code: PKL Classification: Class II
Trade Name: Resolution 360™ Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400 Product Code: PKL Classification: Class II
Trade Name: Resolution 360™ ULTRA Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400 Product Code: PKL Classification: Class II
#### 3. Predicate Devices
Trade Name: Resolution™ Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400 Product Code: PKL Classification: Class II 510(k) Clearance Number: K142973
Trade Name: Resolution 360™ Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400
Image /page/3/Picture/13 description: The image shows the logo for Boston Scientific. The logo is in blue and features the words "Boston" on top of "Scientific". The font is a serif font, and the overall design is simple and professional.
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K222503 Page 2 of 4
Product Code: PKL Classification: Class II 510(k) Clearance Number: K151802
Trade Name: Resolution 360™ ULTRA Clip Classification Name: Hemostatic Metal Clip for the GI Tract Regulation Number: 876.4400 Product Code: PKL Classification: Class II 510(k) Clearance Number: K193424
### 4. Device Description
The Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are sterile devices consisting of a pre-loaded, radiopaque, single-use, endoscopic clipping device consisting of two main components: the delivery system and the clip.
The delivery system consists of a handle assembly and delivery catheter. The delivery system of Resolution 360™ Clip and Resolution 360™ ULTRA Clip will allow for the device to rotate at the distal end. The clip delivery system is offered in a 155cm and 235cm working length for Resolution Clip and Resolution 360 Clip but only 235 cm for Resolution 360 ULTRA Clip. The clip consists of a stainless-steel capsule and clip arms, a cobalt chrome yoke, and a styrene tension breaker. The clip is deployed from the delivery system during use. The clip jaws are engineered such that they can be opened and closed up to five times prior to deployment, aiding in repositioning of the clip at the lesion site. Re-opening, closing, and rotation capability (only for Resolution 360 Clip and Resolution 360 ULTRA Clip) may be limited by clinical circumstances and patient anatomy. There are no associated accessories included with this device. The Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are designed to be compatible with endoscopes with working channels equal to or greater than 2.8 mm.
## 5. Indications for Use
The proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are indicated for clip placement within the gastrointestinal (GI) tract for the purpose of:
- 1. Endoscopic marking
- 2. Hemostasis for:
- Mucosal/sub-mucosal defects < 3 cm
- · Bleeding ulcers
- · Arteries < 2 mm
- · Polvps < 1.5 cm in diameter
- · Diverticula in the colon
- Prophylactic clipping to reduce the risk of delayed bleeding post lesion resection
- 3. Anchoring to affix jejunal feeding tubes to the wall of the small bowel; and Anchoring to affix fully covered esophageal self-expanding metal stents to the wall of the esophagus
- 4. As a supplemental closure method of luminal perforations < 20 mm that can be treated
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conservativelv
## 6. Technological Characteristics
There is no change in intended use or design associated with this Special 510(k). The technological characteristics of the proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip are identical to their respective predicate devices: Resolution™ Clip (K142973), Resolution 360™ Clip (K151802) and Resolution 360™ ULTRA Clip (K193424), with the exception of the MRI safety information in Instruction for Use and Product Information for Patients. In addition, minor modifications of the clinical information was also conducted in order to clarify information.
# 7. Substantial Equivalence
The proposed Resolution™ Clip. Resolution 360™ Clip and Resolution 360™ ULTRA Clip do not have any change in material, design, specification, manufacturing technology, performance, biocompatibility or packaging to their respective predicate devices of Resolution™ Clip (K142973), Resolution 360™ Clip (K151802) and Resolution 360™ ULTRA Clip (K193424). The only change being introduced is to the MRI safety information in the Instruction for Use and Product Information for Patients. The changes to the MRI Safety information are based on the bench testing results of the predicate devices of Resolution™ Clip (K142973) and Resolution 360™ ULTRA Clip (K193424). The design requirements are not impacted by the labeling updates and the proposed devices are deemed substantially equivalent to the predicate devices and continues to meet the pre-defined device specification.
## 8. Performance Data
Performance testing (bench) was successfully completed to demonstrate compliance to the FDA MR Safety Guidance Testing and Labeling Medical Devices for Safety in the Magnetic Resonance (MR) Environment issued on May 20, 2021. The testing included the following:
- Magnetically Induced Displacement Force . ASTM F2052, Standard Test Method for Measurement of Magnetically Induced Displacement Force on Medical Devices in the Magnetic Resonance Environment
- Magnetically Induced Torque . ASTM F2213, Standard Test Method for Measurement of Magnetically Induced Torque on Medical Devices in the Magnetic Resonance Environment
- . Heating by Radio Frequency (RF) Fields ASTM F2182, Standard Test Method for Measurement of Radio Frequencv Induced Heating Near Passive Implants During Magnetic Resonance Imaging
- . Image Artifact ASTM F2119, Standard Test Method for Evaluation of MR Image Artifacts from Passive Implants
The testing was conducted using the predicate devices of Resolution™ Clip (K142973) and Resolution 360™ ULTRA Clip (K193424). The performance (bench) testing demonstrated
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that the proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip comply with the FDA MR Safety Guidance Testing and Labeling Medical Devices for Safety in the Magnetic Resonance (MR) Environment issued on May 20, 2021, and are considered substantially equivalent to the predicate devices.
## 9. Conclusion
Boston Scientific Corporation has demonstrated that the proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip with updated labeling including MRI safety information are compliant with the FDA MR Safety Guidance Testing and Labeling Medical Devices for Safety in the Magnetic Resonance (MR) Environment issued on May 20, 2021, and substantially equivalent to the currently cleared predicate devices of Resolution™ Clip (K142973), Resolution 360™ Clip (K151802) and Resolution 360™ ULTRA Clip (K193424) as the performance of the proposed Resolution™ Clip, Resolution 360™ Clip and Resolution 360™ ULTRA Clip meets the requirement of the per-defined acceptance criteria and intended use.
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
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Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
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What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.