Pajunk's TrokaBone puncture set consists of a modular system for the extraction of bone and bone marrow samples for histological examinations. The TrokaBone Sternal device is intended for the aspiration of bone marrow from the sternum area.
Device Story
TrokaBone and TrokaBone Sternal are modular bone biopsy/aspiration systems. The device consists of an outer cannula with a sharp 'wave' shaped tip, a stylet, and an optional inner cannula with a biopsy chamber for multiple samples. Operation involves manual insertion into the bone (e.g., pelvic crest) using alternating clockwise/counterclockwise twisting motions under pressure. Once the bone wall is penetrated, the stylet is removed. The cylindrical, tapered cannula design facilitates sample collection while preserving tissue structure. An ejection stylet is used to retrieve the sample from the cannula. The device is intended for use by clinicians in a medical setting. It provides high-stability manual bone sampling, benefiting patients by enabling histological analysis through a minimally invasive, stable, and ergonomic procedure.
Clinical Evidence
Bench testing only. Evidence includes validation of sterilization (EO-gas), shelf-life testing (real-time aging), and biocompatibility testing (ISO 10993-1, ISO 10993-5, ISO 10993-10). No clinical data provided.
Technological Characteristics
Modular biopsy cannula system; high-grade stainless steel construction; manual operation via twisting motion; 'wave' shaped tip; EO-gas sterilization; shelf life 5 years; biocompatibility per ISO 10993.
Indications for Use
Indicated for patients requiring bone or bone marrow biopsy/aspiration for histological examination, including sternal bone marrow aspiration.
Regulatory Classification
Identification
A gastroenterology-urology biopsy instrument is a device used to remove, by cutting or aspiration, a specimen of tissue for microscopic examination. This generic type of device includes the biopsy punch, gastrointestinal mechanical biopsy instrument, suction biopsy instrument, gastro-urology biopsy needle and needle set, and nonelectric biopsy forceps. This section does not apply to biopsy instruments that have specialized uses in other medical specialty areas and that are covered by classification regulations in other parts of the device classification regulations.
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# TrokaBone, TrokaBone Sternal Premarket Notification Submission
Image /page/0/Picture/1 description: The image shows the text "K070179" at the top, followed by the word "PAJUNK" in a black box. Below the black box, the word "MEDIZINTECHNOLOGIE" is printed. The text appears to be a logo or label for a medical technology company.
## 510(k) Premarket Notification Submission:
## Summary of Safety and Effectiveness
## Date of Preparation: January 15tt, 2007
4AR 0 7 2007
### Submitter Information/ production site:
Pajunk GmbH Medizintechnologie
78187 Geisingen Germany Fon: +49(0)7704-9291-0 Fax: +49(0)7704-9291-605
Karl-Hall-Strasse 01
### Contact:
Christian Quass, Regulatory Affairs Fon: +49(0)7704-9291-586 Fax: +49(0)7704-9291-605 E-Mail: christian.quass@pajunk.com
## Contract Sterilizer:
Sterigenics SteriPro Lab & EO Facility
## Contact USA
Pajunk USA Stefan Dayagi German American Trade Center 5126 South Royal Atlanta Drive 30084 Tucker, Georgia Fon: +01(0)770-493-9305 E-Mail: stefan.dayagi@pajunk-usa.com
## Establishment Registration Number: 9611612
#### Device Information:
| Device Name: | TrokaBone |
|---------------------------------------|----------------------------------------------------------------------------------|
| Trade Name(s): | TrokaBone, TrokaBone Sternal |
| Common Name: | Biopsy cannula |
| Classification Name: | Instrument, Biopsy |
| Classification Reference: | 21 CFR §876.1075, April 1, 2006 |
| Establishment Registration<br>Number: | 9611612 |
| Regulatory Class: | II |
| Product Code: | KNW, FCG |
| Panel: | Gastroenterology/Urology |
| Predicate Devices: | 1. K013692 TrapSystem, manufactured by MDTech<br>1. K051506 Sterylab Bone Biopsy |
ﺴﺴﺴ
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Image /page/1/Picture/1 description: The image shows the logo for PAJUNK Medizintechnologie. The word "PAJUNK" is in large, bold, white letters against a black background. Below that, the word "MEDIZINTECHNOLOGIE" is in smaller, white letters.
#### Device Description:
Pajunk's TrokaBone and TrokaBone Sternal puncture sets consist of a modular system for single and multiple extraction of bone and bone marrow samples. Equipped with an ergonomic handle and manufactured of highgrade stainless steel, TrokaBone shows a high stability.
#### Indications for use
Paiunk's TrokaBone puncture set consists of a modular system for the extraction of bone and bone marrow samples for histological examinations.
The TrokaBone Sternal device is intended for the aspiration of bone marrow from the sternum area.
#### Predicate Devices:
Predicate devices with the same indications of use are:
- 2. K013692 TrapSystem, manufactured by MDTech
- 3. K051506 Sterylab Bone Biopsy
The detailed description of substantial eqivalence outlining relevant parameters can be found in Section 12 of this submission.
#### Sterilization, Shelf life
Pajunks TrokaBone and TrokaBone Sternal are serilized with EO-gas.
The sterilization process is validated regularly. LAL-Pyrogene-testing, residual testing acc. to ISO10993-7 and bioburden testing are conducted quaterly with differing (worst-case) products.
The contract sterilizer and the sterilizing process is the same as used for all Pajunk Products already cleared for market.
The shelf life is validated for several worst case products (via real time aging) and set to 5 years.
#### Packaging and Labeling
Packaging and labeling procedures are identical to the procedures employed for several of Pajunks products already cleared for market by the FDA.
Packaging materials (cardboard, tyvek, hardblister) are identical to those employed for several of Pajunks products already cleared for market by the FDA.
Therefore packaging and labeling are claimed to be approved by FDA. Safety and effectiveness have been demonstrated for several years now.
#### Technology Characteristics:
Pajunk's TrokaBone puncture set consists of a modular system for single and multiple extraction of bone and bone marrow samples. This set offers a high degree of operational comfort during puncture and aspiration. Equipped with an ergonomic handle and manufactured of highgrade stainless steel, TrokaBone distinguishes itself from similar products due to its high stability.
Puncturing of the pelvic crest can be performed with either the bevel (hollow curve) or trocar tip. The puncture cannula is advanced forward into the bone wall by an alternating clockwise / counterclockwise movement under constant pressure. The stylet is removed as soon as the wall has been penetrated and the resistance has diminished.
The outer cannula has a very sharp "wave" shaped tip. With this tip, and a twisting motion, the cannula easily penetrates the inner structure of the tip of the cannula is designed
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## TrokaBone, TrokaBone Sternal
## Premarket Notification Submission
Image /page/2/Picture/2 description: The image shows the logo for PAJUNK MEDIZINTECHNOLOGIE. The word "PAJUNK" is in large, bold, white letters against a black background. Below that, in smaller letters, is the word "MEDIZINTECHNOLOGIE".
cylindrically, tapering out towards the forward end. This makes the gathering of the sample and its extraction easier. At the same time, the conical shape ensures that the sample remains unchanged in its structure during tissue retrieval.
The ejection stylet is introduced and advanced into the distal opening of the outer cannula using an introductory aid. The sample can then be extracted.
The use of an inner cannula with biopsy chamber is recommended if more than one biopsy samples are required. This inner cannula takes up the sample during advancement, and it can be retracted for extraction without altering the placement of the outer cannula.
#### Biocompatibility:
Pajunks TrocaBone consists of materials and components already cleared for market and proven biocompatibility in several tests. Additionally special testing has been conducted for irritation (ISO10993-10), sensitization (ISO10993-10) and cytotoxicity (ISO10993-5) according to ISO10993-1.
#### Conclusion:
The comparison between the predicate devices and the proposed devices in section 12 of this submission as well as the validated sterilization process demonstrates that the proposed devices are substantially equivalent to the predicate devices and safe and effective.
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/3/Picture/12 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three lines forming its body and wings. The eagle is facing to the right. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Pajunk GmbH Medizintechnologie % Christian Quass Director Regulatory Affairs Karl-Hall-Strasse 01 78187 Geisingen Germany
MAR 0 7 2007
Re: K070179
Trade/Device Name: TrokaBone TrokaBone Sternal Regulation Number: 21 CFR 876.1075 Regulation Name: Gastroenterology-urology-biopsy instrument Regulatory Class: II Product Code: FCG Dated: February 26, 2007 Received: February 28, 2006
Dear Christian Quass:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), 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 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); good manufacturing practice requirements as set
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Page 2 – Christian Quass
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
This letter will allow you to begin marketing your device as described in your Section 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 regulation (21 CFR Part 801), please contact the Office of Compliance at (240) 276-0115. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
Mark N. Melkersson
Mark N. Melkerson Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# TrokaBone, TrokaBone Sternal Premarket Notification Submission
Image /page/5/Picture/1 description: The image shows the word "PAJUNK" in all capital letters. The letters are white and bolded, and they stand out against a black background. There is a registered trademark symbol to the right of the letter K. The text is centered in the image.
MEDIZINTECHNOLOGIE
| <b>Indications for use</b> |
|----------------------------|
|----------------------------|
| 510(k) Number: | |
|----------------------|--|
| Device Name: | |
| Indications for Use: | |
TrokaBone
**Indications for Use:**
Pajunk's TrokaBone puncture set consists of a modular system for the extraction of bone and bone marrow samples for histological examinations.
Prescription Use (Per 21 CFR 801.109)
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)
(Division ign-Off) Division of General, Restorative, and Neuronogical Devices
510(k) Number
Page 1 of 1
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# TrokaBone, TrokaBone Sternal Premarket Notification Submission
Image /page/6/Picture/1 description: The image shows the logo for PAJUNK Medizintechnologie. The word "PAJUNK" is in large, bold, white letters against a black background. Below that, in smaller white letters, is the word "MEDIZINTECHNOLOGIE".
019
#### Indications for use
510(k) Number:
Device Name:
-
TrokaBone Sternal
Indications for Use:
The TrokaBone Sternal device is intended for the aspiration of bone marrow from the sternum area.
Prescription Use (Per 21 CFR 801.109)
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)
Page 1 of 1
PMN TrokaBone
CQ
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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.
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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.
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
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Reading rule for every project: how many summaries do you read in full?
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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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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.