K990156 · Bonutti Research · MBI · Mar 5, 1999 · Orthopedic
Device Facts
Record ID
K990156
Device Name
MULTITAK SS BUTTONS
Applicant
Bonutti Research
Product Code
MBI · Orthopedic
Decision Date
Mar 5, 1999
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 888.3040
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Multitak SS Buttons are new fixation devices indicated in orthopedic fracture and in ligament and tendon repair. The buttons allow for stabilization and linear fixation of bone fragments in fracture procedures. The buttons also serve as fixation posts for distributing suture tension over areas of ligament and tendon repair. The buttons are made of titanium, polypropylene, or polyethylene and are provided sterile with or without suture attached and are not intended for reuse. Maximum suture size to be used with each of the buttons are outlined in the following table:
Device Story
Multitak SS Buttons are cylindrical fixation devices used in orthopedic surgery to stabilize bone fragments or serve as fixation posts for ligament and tendon repair. The device consists of a tubular button applied to the outer bone cortex over a pre-drilled hole. Suture is passed through the bone hole and secured to the button, providing linear fixation and compression to promote healing. The buttons are used by surgeons in clinical settings. By distributing suture tension over the fracture or repair site, the device facilitates tissue healing. The buttons are provided sterile, single-use, and are available in various sizes and materials (titanium, polypropylene, or UHMWPE).
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Cylindrical/tubular buttons; materials: Ti-6Al-4V alloy, polypropylene, and UHMWPE. Dimensions range from 1.2 mm x 4.0 mm to 3.0 mm x 10.0 mm. Provided sterile. Mechanical fixation principle via suture tension distribution.
Indications for Use
Indicated for orthopedic fracture repair and ligament/tendon repair in patients requiring bone fragment stabilization or suture tension distribution.
Regulatory Classification
Identification
A smooth or threaded metallic bone fixation fastener is a device intended to be implanted that consists of a stiff wire segment or rod made of alloys, such as cobalt-chromium-molybdenum and stainless steel, and that may be smooth on the outside, fully or partially threaded, straight or U-shaped; and may be either blunt pointed, sharp pointed, or have a formed, slotted head on the end. It may be used for fixation of bone fractures, for bone reconstructions, as a guide pin for insertion of other implants, or it may be implanted through the skin so that a pulling force (traction) may be applied to the skeletal system.
Multitak SS Suture System - Titanium Soft Tissue Anchor (K973015)
Multitak SS Suture System - UHMWPE Soft Tissue Anchor (K964532)
Submission Summary (Full Text)
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3/5/99
K990156
#### Bonutti Research, Inc. - Multitak SS Buttons 510(k) Premarket Notification
#### 510(k) SUMMARY OF SAFETY AND EFFECTIVENESS
Inc following information is submitted in accordance with the requirements of 21 CFR 807.92
Contact Person: Patnek Balsmann, MS, RAC, Manager, QA/RA & Clinical Bonulli Research, Inc. P O Box 1367, Ettingham, Illinois 62401 Phone 217 342 3412 ext 321
Date Prepared: March i 1999
Proprietary Name: Multitak SS Buttons
Common Name: Fracture Fixation Device and Surgical Buttons.
Classification Name: 21 CFR 888 3040 Smooth Or Threaded Metallic Bone Fixation Fastener and 21 CFR 878 4930 Suture Retemion Device
Device Description: The Multitak SS Buttons are fixation devices indicated in orthopedic fracture and in ligament and tendon repair They are intended to stabilize two or more bone hagments and distribute suture tension over the fracture site in order to facilitate healing. The buttons also serve as fixation posts for distributing surure tension over areas of ligament and renden repair The cyundneal buttons are made from titanium, polypropylene, or polyethylene and have an overali ratio of approximately 3 1, length to diameter. The buttons are available in the tollowing sizes ( ! ) ! 2 mm in diameter and 4 0 mm in length, (2) 1 8 mm in diameter and o 0 mm in length (3) 2 5 mm in diameter and 8 3 mm in length, and (4) 3 0 mm in diameter and I min in lengin The buttons are applied to the outer bone cortex over a prednilled hole across the manufe she Bone fragments are stabilized with suture running through the drill bone hole and off at the button The buttons provide linear fixation and compression of the bone trapments promoting healing at the fracture site Buttons can also be used as fixation posts and are praced outside the corucal bone in ligament and tendon repair. They provide a means of distributing suture tension over areas of repaired ligaments and tendons. The buttons are provided sterile with or without attached suture in packs of two and are not intended for reuse.
intended Use: The Multiak SS Buttons are new fixation devices indicated in orthopedic fracture and in ligament and tendon repair The buttons allow for stabilization and linear fixation of bone fragments in fracture procedures The buttons also serve as fixation posts for arste buting subure tension over areas of ligament and tendon repair. The buttons are made of " manne polyerhylene or polyethylene and are provided sterile with or without suture attached and are not intended for reuse. Maximum surure size to be used with each of the buttons are out ned in the following table
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# Bonutti Research, Inc. -- Multitak SS Buttons S10(k) Summary of Safety and Effectiveness Page 2
| Multitak SS Button Size | Button Material | Maximum USP Suture Size |
|-------------------------|------------------------------------------------------|-------------------------|
| 3.0 mm x 10.0 mm | Ti-6Al-4V | Up to USP Size 2 |
| 3.0 mm x 10.0 mm | Polypropylene | Up to USP Size 2 |
| 3.0 mm x 10.0 mm | Ultra-high-molecular-weight<br>polyethylene (UHMWPE) | Up to USP Size 2 |
| 7.5 mm x 8.3 mm | Ti-6Al-4V | Up to USP Size 2 |
| 7.5 mm x 8.3 mm | Polypropylene | Up to USP Size 1 |
| 7.5 mm x 8.3 mm | UHMWPE | Up to USP Size 1 |
| 7.8 mm x 6.0 mm | Ti-6Al-4V | Up to USP Size 2 |
| 7.2 mm x 4.0 mm | Ti-6Al-4V | Up to USP Size 2-0 |
Predicate Device: The Multitak SS Buttons are similar in intended use to Kirschner Wires and Steinmann Pins manufactured by Synvasive Technology, Inc. (K961522) and to Ethicon, Inc., Polypropyiene Buttons regulated as Class I surgical buttons. The Multitak SS Buttons are similar in design and materials to the Multitak SSTM Suture System soft tissue suture anchor devices manufactured by Bonutt: Research, Inc (K973015 and K964532.)
Predicate Comparison: A chart comparing characteristics of the The Multitak SS Buttons to to as of the predicate devices is attached
Submitted by:
yielde more
Patrick Balsmann Manager, QARA & Clinical
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## Benner Kevneh, bie - Meltink SS Buttons 410gkt Promonten Natifustion JRHuxa v
| Device<br>Characteristic | Mulfitek SS<br>Buttons | Symante<br>Technology, Inc<br>Kirschmer Wires and<br>Steinmann Pins | Ethicon, Inc.<br>Polypropylene<br>Surgical Buttons | Mulfitek SS<br>Suture System -<br>Titanium Soft Tissue<br>Anchor | Mulfitek SS<br>Suture System -<br>UHMWPE Soft<br>Tissue Anchor |
|--------------------------|----------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------|-------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------|
| 510(k) Number | Current Submission | K961522 | Class I | K973015 | K964532 |
| Intended Use | Stabilize two or more<br>bone fragments by<br>distributing suture<br>tension over fracture<br>site | Draw two or more<br>bone fragments<br>together to facilitate<br>healing | Aid wound healing by<br>distributing suture<br>tension over contact<br>surface area | Soft tissue to bone<br>suture fixation | Soft tissue to bone<br>suture fixation |
| Indications | Bone fracture repair<br>Ligament and tendon<br>repair | Bone fracture repair | Orthopedic tendon<br>repair | Shoulder, elbow,<br>knee, foot/ankle, and<br>hand/wrist soft tissue<br>to bone orthopedic<br>applications | Shoulder, elbow,<br>knee, and foot/ankle,<br>soft tissue to bone<br>orthopedic<br>applications |
| Design | Tubular buttons<br>approximate ratio of<br>3:1 length to<br>diameter | Sized K-wires and<br>pins | 14 mm diameter<br>round buttons. | Cylindrical anchors<br>approximate ratio of<br>2:1 length to<br>diameter. | Tubular anchors<br>approximate ratio of<br>2:1 length to<br>diameter. Single and<br>double anchor tube<br>constructs |
| Material | Titanium (Ti-6Al-4V)<br>alloy, polypropylene;<br>and polyethylene<br>(UHMWPE.) | Stainless steel. | Polypropylene. | Titanium (Ti-6Al-4V)<br>alloy and stainless<br>steel. | Polyethylene<br>(UHMWPE.) |
| Provided Sterile | Sterile. | Sterile and non-<br>sterile. | Sterile. | Sterile. | Sterile. |
.
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Image /page/3/Picture/1 description: The image is a black and white logo for the U.S. Department of Health and Human Services. The logo features a circular design with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle are three stylized human profiles facing to the right, with flowing lines suggesting movement or connection.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
MAR - 5 1999
Patrick G. Balsmann, M.S., RAC Manager, QA/RA and Clinical Affairs Bonutti Research, Inc. P.O. Box 1367 62401 Effingham, Illinois
Re: K990156 Multitak SS Button Regulatory Class: II Product Codes: MBI and GAT January 14, 1999 Dated: Received: January 19, 1999
#### Dear Mr. Balsmann:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). You may, therefore, market the device, subject to the general controls provisions The general controls provisions of the Act of the Act. include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Failure to Administration (FDA) will verify such assumptions. comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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Page 2 - Patrick G. Balsmann, M.S., RAC
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4659. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to
premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
Russell Vayga
M. Celia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Bonutti Research, Inc. -- Multitak SS Buttons 510(k) Premarket Notification
# INDICATIONS FOR USE
Device Name: Multitak SS Buttons.
Indications for Use: The Multitak SS Buttons are new fixation devices indicated in orthopedic fracture and in ligament and tendon repair. The buttons allow for stabilization and linear fixation of bone fragments in fracture procedures. The buttons also serve as fixation posts for distributing suture tension over areas of ligament and tendon repair. The buttons are made of titanium, polypropylene, or polyethylene and are provided sterile with or without suture attached and are not intended for reuse. Maximum suture size to be used with each of the buttons are outlined in the following table:
| Multitak SS Button Size | Button Material | Maximum USP Suture Size |
|-------------------------|------------------------------------------------------|-------------------------|
| 3.0 mm x 10.0 mm | Ti-6Al-4V | Up to USP Size 2 |
| 3.0 mm x 10.0 mm | Polypropylene | Up to USP Size 2 |
| 3.0 mm x 10.0 mm | Ultra-high-molecular-weight<br>polyethylene (UHMWPE) | Up to USP Size 2 |
| 2.5 mm x 8.3 mm | Ti-6Al-4V | Up to USP Size 2 |
| 2.5 mm x 8.3 mm | Polypropylene | Up to USP Size 1 |
| 2.5 mm x 8.3 mm | UHMWPE | Up to USP Size 1 |
| 1.8 mm x 6.0 mm | Ti-6Al-4V | Up to USP Size 2 |
| 1.2 mm x 4.0 mm | Ti-6Al-4V | Up to USP Size 2-0 |
**Prescription Use**
(Per 21 CFR 801.109)
Aurell V. Hogan for me
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1 i
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.