K173323 · LeMaitre Vascular, Inc. · FZP · Mar 8, 2018 · General, Plastic Surgery
Device Facts
Record ID
K173323
Device Name
AnastoClip GC Closure System
Applicant
LeMaitre Vascular, Inc.
Product Code
FZP · General, Plastic Surgery
Decision Date
Mar 8, 2018
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4300
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The AnastoClip GC is intended for use in the creation of everting anastomoses in blood vessels and other small tubular structures when tissue penetration is desired. The Applier is also intended for approximation of durotomies following open craniotomy and open spinal laminectomy procedures.
Device Story
AnastoClip GC Closure System creates everting anastomoses in blood vessels and approximates dural tissue; used in open craniotomy and spinal laminectomy. System includes manual applier with rotating shaft, integral cartridge of titanium clips, clip remover, and atraumatic forceps. Physician squeezes applier levers to close clip around everted tissue; releasing levers automatically loads next clip. Device facilitates secure tissue approximation; reduces risk of CSF leaks; provides mechanical alternative to traditional suturing. Used in clinical/surgical settings by surgeons.
Clinical Evidence
GLP safety evaluation in 6 porcine models comparing subject device to predicate for cranial and spinal dura closure. Primary endpoints: CSF leakage, histomorphology, and clinical pathology at 90 days. Results: No CSF leaks observed; no clinically significant changes in body weight or pathology; histologic findings showed minimal fibrosis/hemorrhage and no necrosis, infection, or foreign body reaction. Comparable performance to predicate.
Technological Characteristics
Titanium clips; manual mechanical actuation; rotating shaft applier; ethylene oxide (EO) sterilized per ANSI/AAMI/ISO 11135-1:2007. Design features sharpened clip points for tissue penetration. Standalone manual surgical instrument.
Indications for Use
Indicated for patients undergoing vascular anastomosis or dural closure following open craniotomy or spinal laminectomy. Used for everting tissue edges in blood vessels, small tubular structures, and dural tissue.
Regulatory Classification
Identification
An implantable clip is a clip-like device intended to connect internal tissues to aid healing. It is not absorbable.
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March 8, 2018
LeMaitre Vascular, Inc. Xiang Zhang VP of Regulatory Affairs 63 Second Ave. Burlington, Massachusetts 01803
Re: K173323
Trade/Device Name: AnastoClip GC Closure System Regulation Number: 21 CFR 878.4300 Regulation Name: Implantable Clip Regulatory Class: Class II Product Code: FZP, HBT Dated: February 7, 2018 Received: February 8, 2018
Dear Xiang Zhang:
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. 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 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820);
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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 http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). 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 (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
# Sincerely, Michael J. Hoffmann -S
Carlos L. Peña. PhD, MS for Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K173323
Device Name AnastoClip GC Closure System
#### Indications for Use (Describe)
The AnastoClip GC is intended for use in the creation of everting anastomoses in blood vessels and other small tubular structures when tissue penetration is desired. The Applier is also intended for approximation of durotomies following open craniotomy and open spinal laminectomy procedures.
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|
| <span style="font-size:14px;"><b> <span style="font-family:Arial;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D)</b> </span> |
|--------------------------------------------------------------------------------------------------------------------------------------|
| <span style="font-size:14px;"><b> <span style="font-family:Arial;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C)</b> </span> |
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# 510k Summary
### Submitter's Information
| Name: | LeMaitre Vascular, Inc. |
|----------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Address: | 63 Second Avenue, Burlington, MA 01803 |
| Phone: | 781-425-1729 |
| Fax: | 781-221-2253 |
| Contact Person: | Xiang (Vic) Zhang<br>VP of Regulatory Affairs<br>LeMaitre Vascular, Inc.<br>Email: xzhang@lemaitre.com |
| Date Prepared: | January 31, 2018 |
| Device Name: | AnastoClip GC Closure System |
| Trade Name: | AnastoClip GC Closure System |
| Common Name: | Clip, Implantable |
| Regulation Number: | 21CFR §878.4300; 21CFR §878.4800 |
| Classification Panel: | Neurology |
| Class: | II (2) |
| Product Code: | FZP, HBT |
| Establishment<br>Registration: | 1220948 |
| Establishment: | 63 Second Avenue<br>Burlington, MA 01803 |
| Predicate Device: | AnastoClip VCS Closure System K962043 |
| Reference Device: | AnastoClip GC Closure System K091987 |
| Device Description: | AnastoClip GC Closure System is designed to create<br>everting anastomoses of tissue. It includes the applier, clip<br>remover, and atraumatic forceps. The AnastoClip GC<br>applier consists of a rotating shaft and an integral cartridge<br>containing titanium clips. As the levers of the applier are<br>squeezed together, the clip is closed around the everted<br>tissue edges. As the levers are released, a new clip is<br>automatically loaded into the clip applier jaws. It is<br>recommended, with each procedure, to use the atraumatic<br>everting forceps to aid in the everting of the tissue edges. It |
| | is also recommended, with each procedure, to use the<br>AnastoClip Remover for the removal of any AnastoClip<br>GC clips when needed. |
| Intended Use: | The AnastoClip GC Closure System is intended for use in<br>the creation of everting anastomoses in blood vessels and<br>other small tubular structures when tissue penetration is<br>desired. The applier is also intended for the approximation<br>of dural tissue/durotomies following open craniotomy and<br>open spinal laminectomy procedures. |
| Summary of Technological<br>Characteristics: | Comparisons of the AnastoClip GC Closure System with<br>the predicate AnastoClip VCS Closure System show that<br>technological characteristics such as materials,<br>biocompatibility, performance, sterilization, and packaging<br>of the proposed device are substantially equivalent to the<br>predicate device. The design difference between the<br>proposed device and the predicate device are:<br>• The implantable clip of the AnastoClip GC Closure<br>System is designed with sharpened points. |
| Functional/Safety Testing: | The verification activities conducted indicate that<br>AnastoClip GC Closure System meets the product<br>performance requirements of the device specifications and<br>does not raise any additional safety issues. |
| Sterilization: | The device is ethylene oxide (EO) sterilized according to<br>ANSI/AAMI/ISO 11135-1:2007, "Sterilization of Medical<br>Devices - Validation and Routine Control of Ethylene<br>Oxide Sterilization" |
| Biocompatibility: | The materials used in AnastoClip GC Closure System are<br>identical to those in the predicate device and reference<br>device which have established biocompatibility. This<br>submission is to expand the indication with no change to<br>product design or materials. |
| Summary of Product<br>Testing: | The following tests have been completed to evaluate the<br>safety and performance of the AnastoClip GC Closure<br>System for the additional indication:<br>• Leak test<br>• Grin test |
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#### Summary of Pre-clinical A GLP safety evaluation of the AnastoClip GC for cranial Study: and spinal dura closure study was performed in 6 porcine models. For each animal, subject device and the predicate device were used to close the dura defects created by surgical incision. On Day 90, the animals were euthanized and a comprehensive necropsy was performed. Cranial and spinal implant sites with associated brain/spinal cord were collected and processed for histomorphologic evaluation. No CSF leaks observed at both the cranial and spinal dural sites after application. There were no clinically significant changes in body weight, body condition score, or clinical pathology parameters in any animal over the course of the study. Regardless of time point, no CSF sample exhibited any indication of adverse responses such as inflammation or infection. There were no signs of hydrocephalus or other abnormalities noted from the CT scan evaluations. Microscopically, regardless of treatment group (AnastoClip GC or AnastoClip AC) or dural implant site (cranium or spinal cord), histologic findings were comparable. There was minimal fibrosis and vascularization, minimal hemorrhage and no implant-associated necrosis, infection or foreign body reaction. Conclusion: LeMaitre Vascular has demonstrated that the AnastoClip GC Closure System is substantially equivalent to the predicate devices based on its intended use and fundamental scientific technology.
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
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.
Where do you find a device's intended use without opening the PDF?
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
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
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.
6. Collections
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.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
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.
8. Chart view
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.