K170957 · Allosource · GAT · Mar 20, 2018 · General, Plastic Surgery
Device Facts
Record ID
K170957
Device Name
ReConnex Pre-Sutured Tendon
Applicant
Allosource
Product Code
GAT · General, Plastic Surgery
Decision Date
Mar 20, 2018
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.5000
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Pre-sutured allograft tendons are intended for use as a construct in anterior cruciate ligament and posterior cruciate ligament reconstruction.
Device Story
ReConnex™ Pre-Sutured Tendon consists of cleaned, disinfected allograft tendons (anterior tibialis, posterior tibialis, peroneus longus, semitendinosus, or gracilis) pre-sutured with Force Fiber UHMWPE nonabsorbable surgical suture. Device is terminally sterilized via electron beam irradiation. Used by orthopedic surgeons in operating rooms for ACL and PCL reconstruction. Pre-sutured construct eliminates manual suturing of tendon bundles in the OR, providing a biomechanically equivalent alternative to surgeon-prepared bundles. Benefits include standardized construct preparation and reduced surgical time. Output is a ready-to-implant tendon construct.
Clinical Evidence
No clinical trials were performed. Evidence includes bench testing (tensile strength, suture pull-out, knot pull strength), bacterial endotoxin testing (USP <85>, USP <161>, ANSI/AAMI ST72:2011), and a cadaver feasibility study. The cadaver study (n=not specified) demonstrated no statistical difference in biomechanical performance between the pre-sutured construct and surgeon-prepared quadruple bundles. Literature review supported the use of the specified tendon types for ACL reconstruction.
Technological Characteristics
Construct comprises allograft tendons and UHMWPE nonabsorbable surgical suture. Sterilized via low-dose electron beam irradiation. Single-patient use. Bacterial endotoxin levels meet <20 EU per device. Complies with AATB requirements and 21 CFR Parts 820 and 1271 for tissue processing.
Indications for Use
Indicated for patients requiring anterior cruciate ligament (ACL) or posterior cruciate ligament (PCL) reconstruction using allograft tendon constructs.
Regulatory Classification
Identification
Nonabsorbable poly(ethylene terephthalate) surgical suture is a multifilament, nonabsorbable, sterile, flexible thread prepared from fibers of high molecular weight, long-chain, linear polyesters having recurrent aromatic rings as an integral component and is indicated for use in soft tissue approximation. The poly(ethylene terephthalate) surgical suture meets U.S.P. requirements as described in the U.S.P. Monograph for Nonabsorbable Surgical Sutures; it may be provided uncoated or coated; and it may be undyed or dyed with an appropriate FDA listed color additive. Also, the suture may be provided with or without a standard needle attached.
Special Controls
*Classification.* Class II (special controls). The special control for this device is FDA's “Class II Special Controls Guidance Document: Surgical Sutures; Guidance for Industry and FDA.” See § 878.1(e) for the availability of this guidance document.
Force Fiber UHWMPE Non-absorbable Surgical Suture (K092533)
Submission Summary (Full Text)
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image shows the logos of the Department of Health & Human Services and the U.S. Food & Drug Administration. The Department of Health & Human Services logo is on the left, and the U.S. Food & Drug Administration logo is on the right. The FDA logo is blue and white and includes the words "FDA U.S. FOOD & DRUG ADMINISTRATION".
March 20, 2018
AlloSource Trevor Wright Director, Regulatory Affairs 6278 S. Troy Circle Centennial, Colorado 80111
Re: K170957
Trade/Device Name: ReConnex™ Pre-Sutured Tendon Regulation Number: 21 CFR 878.5000 Regulation Name: Nonabsorbable poly(ethylene terephthalate) surgical suture Regulatory Class: Class II Product Code: GAT Dated: February 13, 2018 Received: February 14, 2018
Dear Mr. Wright:
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);
{1}------------------------------------------------
### Page 2 - Trevor Wright
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,
# Mark N. Melkerson -S
Mark N. Melkerson Director Division of Orthopedic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
## Indications for Use
510(k) Number (if known): K170957
Device Name:
Indications for Use:
Pre-sutured allograft tendons are intended for use as a construct in anterior cruciate ligament and posterior cruciate ligament reconstruction.
Prescription Use _ X (21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
{3}------------------------------------------------
| Submitted by: | AlloSource<br>6278 S. Troy Circle<br>Centennial, CO 80111 USA<br>Telephone: 720-873-0213<br>Facsimile: 720-873-0212 |
|----------------------|---------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Trevor Wright |
| Date Prepared: | March 20, 2018 |
| Proprietary Name: | ReConnex™ Pre-Sutured Tendon |
| Common Name: | Pre-Sutured Tendon |
| Classification Name: | Nonabsorbable poly(ethylene terephthalate) surgical suture<br>(21 CFR 878.5000)<br>GAT |
| Predicate Device: | Arthrex Suture Grafting Kit<br>510(k) # K041553 |
| Reference Device: | Force Fiber UHWMPE Non-absorbable Surgical Suture<br>510(k) # K092533 |
This 510(k) Summary information is being submitted in accordance with the requirements of 21 CFR Part 807.92.
#### Device Description
This device consists of a combination of tendons that have been cleaned and disinfected using a proprietary process. The tendons are pre-sutured and terminally sterilized by low dose electron beam irradiation. The device may include anterior tibialis, posterior tibialis, peroneus longus, semitendinosus and/or gracilis tendons and is pre-sutured with Force Fiber UHWMPE nonabsorbable surgical suture. Through a contractual agreement with Teleflex Medical, AlloSource has the license rights to manufacture pre-sutured tendons using their UHMWPE non-absorbable surgical suture cleared 15-Sept-2009 under pre-market clearance K092533. All products are provided sterile and for single patient use.
#### Intended Use of Device
Pre-sutured allograft tendons are intended for use as a construct in anterior cruciate ligament and posterior cruciate ligament reconstruction.
#### Technological Characteristics and Substantial Equivalence
The predicate device that received market clearance under K041553 is a suture kit intended to be incorporated as a component into surgical constructs including allograft tissues used for repair. The components of the proposed ReConnex™ pre-sutured tendon device are equivalent to the device described in K041553 in that tendon allografts are sutured together with UHMWPE sutures to generate a surgical construct for the soft tissue reconstruction described above. Therefore, AlloSource concludes based on the intended use described in K041553 that our ReConnex™ presutured tendon is considered substantially equivalent to the predicate device cleared 10-Dec-2004.
Donors meet eligibility requirements for all relevant communicable diseases via a medical director review of donor medical and social history and all applicable infectious disease screening tests, including human immunodeficiency virus type 1 (HIV-1 and HIV-1 NAT), human immunodeficiency virus type 2 (HIV-2), hepatitis B virus (HBV NAT, HBcAb and HBsAg), hepatitis C virus (HCV and HCV-NAT), and syphilis (Rapid Plasma Reagin or Serologic Test for Syphilis). The tissue recovered from each individual donor is processed as an individual batch in a segregated manner to avoid
{4}------------------------------------------------
cross contamination with other donor tissue. The donor tissue utilized meets the requirements of the American Association of Tissue Banks (AATB) and 21 CFR Parts 820 and 1271.
#### Product Performance Testing
Visual characteristics and tensile strength of the pre-sutured tendons were evaluated and are equivalent to or better than the tensile strength data for the predicate device cleared under K041553. The suture does not pull out when subjected to pull testing, and the suture knot pull strength is equivalent to or better than USP Non-absorbable Surgical Sutures average knot pull strength.
#### Cadaver Feasibility Testing
A cadaver study was conducted to demonstrate the feasibility of using the ReConnex™ pre-sutured tendon construct for ACL reconstruction, and that the construct is equivalent to, or better than a quadruple bundled construct sutured by the surgeon at the time of the results of the human cadaver knee ACL reconstruction show that biomechanically, there is no statistical difference between a sutured tendon bundle constructed in the operating room using allograft tendons, and a pre-sutured tendon constructed by AlloSource. It was also shown that ReConnex™ pre-sutured tendon construct can be implanted using traditional clinical methods by an orthopedic surgeon.
#### Literature Review
A literature review provided significant data regarding the use of individual tendons, and sutured tendon bundles in ACL reconstruction, but provided limited data specific to clinical outcome. The literature supports the combination of any two tendon types, i.e. gracilis, semitendinosus, anterior tibialis, posterior tibialis, or peroneus longus to produce the sutured tendon bundles. The number of strands is limited to a maximum of four strands as is commonly seen in a quadruple bundle. Testing performed and referenced in the literature shows that sutured tendon bundles of any of the tendon types referenced are suitable for ACL reconstruction.
#### Bacterial Endotoxin Testing
Bacterial Endotoxin Testing was conducted in accordance with the following standards:
- USP chapter <85>, Bacterial Endotoxin Test ●
- USP chapter <161>, Transfusion And Infusion Assemblies And Similar Medical Devices ●
- ANSI/AAMI ST72:2011, Bacterial endotoxins Test methods, routine, monitoring, and ● alternatives to batch testing
- . FDA Guidance for Industry Pyrogen and Endotoxins Testing: Questions and Answers
Each final Reconnex™ Pre-sutured Tendon device is tested using a representative sample which has been shown to be an acceptable and representative test sample for bacterial endotoxin testing. The final construct and its associated sample were tested to ensure they met the BET requirement of 20 EU per Device.
#### Conclusion
The components of the proposed ReConnex™ pre-sutured tendon device, which includes the reference device cleared under K092533, are equivalent to the device covered under K041553 in that tendon allografts are sutured together with UHMWPE sutures. Product safety and performance are adequately supported by the substantial equivalence information and test results.
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.