ELLIPSE PRECICE INTRAMEDULLARY LIMB LENGTHENING SYSTEM
K113219 · Ellipse Technologies, Inc. · HSB · Oct 19, 2012 · Orthopedic
Device Facts
Record ID
K113219
Device Name
ELLIPSE PRECICE INTRAMEDULLARY LIMB LENGTHENING SYSTEM
Applicant
Ellipse Technologies, Inc.
Product Code
HSB · Orthopedic
Decision Date
Oct 19, 2012
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 888.3020
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Ellipse Intramedullary Limb Lengthening System is indicated for limb lengthening of the tibia and femurs.
Device Story
System comprises modular implantable intramedullary rod (distracting rod), locking screws, and external remote controller (ERC). Rod contains rare earth magnet, telescoping lead screw/nut assembly, and gearing. ERC is electrically powered, non-invasive adjustment component. Physician or patient operates ERC in home environment to non-invasively lengthen implanted rod via magnetic coupling. Output is controlled mechanical distraction of bone. Benefits include non-invasive limb lengthening, reducing need for repeated surgical interventions. System used for tibia and femur lengthening.
Clinical Evidence
No clinical trials performed. Evidence consists of a usability study on 30 subjects to evaluate ERC operation in a representative patient population for home use, alongside bench testing including risk management, minimum rated voltage, shock/vibration, and ingress protection per IEC 60601-1-11:2010.
Technological Characteristics
Modular intramedullary rod with rare earth magnet, telescoping lead screw/nut assembly, and gearing. ERC is electrically powered. Materials include unspecified metals for rods and screws. Sterilization: Gamma for actuator; non-sterile for extension rods/screws (requires sterilization). Standards: EN ISO 14971:2007 (risk management), IEC 60601-1-11:2010 (home healthcare electrical systems).
Indications for Use
Indicated for limb lengthening of the tibia and femurs in patients requiring such procedures.
Regulatory Classification
Identification
An intramedullary fixation rod is a device intended to be implanted that consists of a rod made of alloys such as cobalt-chromium-molybdenum and stainless steel. It is inserted into the medullary (bone marrow) canal of long bones for the fixation of fractures.
Predicate Devices
Ellipse Intramedullary Limb Lengthening System (K101997)
Submission Summary (Full Text)
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K113219
Ellipse Technologies, Inc. Ellipse PRECICE Intramedullary Limb Lengthening System Home Use of the External Remote Controller Original 510(k) Application
Ocotber 2011 Product Code: HSB
510(K) SUMMARY ** 6.
OCT 19 2012
## Ellipse Intramedullary Limb Lengthening System 510(k) Summary - K TBD October 2011
1. Ellipse Technologies, Incorporated Company: 13900 Alton Parkway, Suite 123 Irvine, CA 92618
> Contact: John McIntyre Vice President, RA/QA/CA
2. Proprietary Trade Name: Ellipse PRECICE Intramedullary Limb Lengthening System
3. Classification Name: Rod, Fixation, Intramedullary and Accessories
(21 CFR 888.3020)
Product Code: HSB 4.
રે. Product Description:
The Ellipse PRECICE Intramedullary Limb Lengthening System is composed of a modular implantable intramedullary rod ("Distracting Rod"), locking screws, an external remote controller (ERC), and surgical implantation tools and accessories. The modular implantable rod is available in different configurations, lengths, and diameters to accommodate a variety of patient anatomies. Likewise, the locking screws are available in two different diameters and a variety of lengths from 20 mm to 75 mm in 5 mm increments. The distracting rod is a modular system that includes the PRECICE Actuator component and various configurations of PRECICE Extension Rods. The PRECICE Actuator includes an enclosed rare earth magnet, telescoping lead screw/nut assembly and gearing. The PRECICE Actuator is supplied sterile by gamma sterilization while the
Confidential - This document and the information contained herein may not be reproduced, used or disclosed without written permission from Ellipse Technologies, Inc.
Page 18
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PRECICE IMLL Extension Rods, locking screws, and reusable accessories are supplied non-sterile and must be sterilized prior to use.
The External Remote Controller (ERC) is a non-invasive adjustment component of the system. The ERC is electrically powered and is used for non-invasive lengthening of the implanted rod. The ERC can be used by the physician or by the patient in the home environment to perform lengthening.
#### 6. Indications
The Ellipse PRECICE Intramedullary Limb Lengthening System is indicated for limb lengthening of the tibia and femurs.
#### 7. Substantial equivalence
Documentation demonstrates substantial equivalence to the Ellipse Intramedullary Limb Lengthening System cleared under K101997 (cleared on July 12, 2011). The purpose of this premarket notification is to include additional labeling materials for the Home Use of the ERC by the patient. Therefore, data provided in this submission only includes information relevant to the Home Use of the ERC by the patient. Substantial equivalence is based on similar indications for use, designs, in vitro testing, and Usability evaluations performed. The in vitro evaluations included specific tests performed on the ERC to demonstrate the suitability of the ERC for use in the home by the patient. In addition, Usability evaluation of the ERC in a representative population was performed to demonstrate its suitability for use in the proposed patient population and in accordance with the indications.
With the exception of the Home Use of the External Remote Controller by the patient, the implant and the accessories to the system are identical between the Ellipse PRECICE IMLL System and the predicate described in K101997.
No changes in the design of the implant are included in this premarket submission. Specifically, the Ellipse PRECICE IMLL System and the predicate devices are both
Confidential - This document and the information contained herein may not be reproduced, used or disclosed without written permission from Ellipse Technologies, Inc.
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designed to be implanted into the medullary canal of the femur or tibia. These devices are available in a variety of geometrical configurations and diameters/lengths to accommodate a variety of patient anatomies. Both devices are designed as a telescoping rod that can be lengthened non-invasively with the use of the ERC.
The Ellipse PRECICE IMLL System was developed and evaluated in accordance with recognized standards and with in-house developed test methodologies. This testing includes risk assessment of the device specific to the home use, additional testing to applicable IEC standards for home use of medical electrical systems for use in the home healthcare environment, and a usability study undertaken on 30 subjects to evaluate the usability of the ERC in an equivalent patient population. Risk analysis for the home use of the device, labeling for the home use of the ERC, and test results are included in this premarket notification. The results of testing demonstrate that the Ellipse PRECICE IMLL System that is the subject of this premarket notification is substantially equivalent to the predicate device.
The following documentation and testing have been included in order to establish equivalence to the predicate device. Substantial equivalence is focused on the Home Use aspect of the ERC. Testing includes a usability evaluation for the Home Use of the ERC by the patient, minimum rated voltage testing, shock and vibration testing, and ingress protection testing performed in accordance with IEC 60601-1-11;2010. The following tests have been performed in order to establish equivalence to the predicate device:
| Test/Document Description | Applicable test standard |
|-------------------------------|--------------------------|
| Risk Management Report | EN ISO 14971:2007 |
| Minimum rated voltage testing | IEC 60601-1-11:2010 |
| Shock and Vibration Testing | IEC 60601-1-11:2010 |
| Ingress protection | IEC 60601-1-11:2010 |
| Usability evaluation | n/a |
Confidential - This document and the information contained herein may not be reproduced, used or disclosed without written permission from Ellipse Technologies, Inc.
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# DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/3/Picture/1 description: The image is a seal for the Department of Health & Human Services - USA. The seal is circular and contains the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. In the center of the seal is an image of an eagle.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
OCT 19 2012
Ellipse Technologies, Inc. % Mr. John McIntyre Vice President, Regulatory, Quality, and Clinical Affairs 13900 Alton Parkway, Suite 123 Irvine, California 92618
Re: K113219
Trade/Device Name: Ellipse PRECICE Intramedullary Limb Lengthening System Regulation Number: 21 CFR 888.3020 Regulation Name: Intramedullary fixation rod Regulatory Class: II Product Code: HSB Dated: September 28, 2012 Received: October 1, 2012
Dear Mr. McIntyre:
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 (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set
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Page 2 - Mr. John McIntyre .
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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 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.
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 (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
Mark N. Melkerson Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### Indications for Use
KI13219 510(k) Number: Unknown
Device Name: Ellipse PRECICE Intramedullary Limb Lengthening System
Indications for Use: The Ellipse Intramedullary Limb Lengthening System is indicated for limb lengthening of the tibia and femurs.
Prescription Use X (Part 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)
Adb
Page 1 of
(Division Sign-Oft) Division of Surgical, Orthopedic, and Restorative Devices
510(k) Number k113219
Confidential - This document and the information contained herein may not be reproduced, used or disclosed without written permission from Ellipse Technologies, Inc.
Page 17 of 340
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.