K072566 · Hanger Prosthetics & Orthotics, Inc. · OAN · Jan 9, 2008 · Neurology
Device Facts
Record ID
K072566
Device Name
HANGER CRANIAL BAND
Applicant
Hanger Prosthetics & Orthotics, Inc.
Product Code
OAN · Neurology
Decision Date
Jan 9, 2008
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 882.5970
Device Class
Class 2
Attributes
Therapeutic, Pediatric
Indications for Use
Intended for medical purposes to apply static or gentle pressure to prominent regions of an infant's cranium to improve cranial symmetry or shape. To treat infants from three to eighteen months of age with moderate to severe non-synostotic positional plagiocephaly, including plagiocephalic-, brachycephalic-, scaphocephalic-shaped heads.
Device Story
Hanger Cranial Band is a custom-fabricated thermoplastic helmet (polypropylene/polyethylene copolymer shell with polyethylene foam lining) used to treat infant cranial deformities. Device uses hand-held 3D laser scanner to capture infant head measurements; digital files processed via CAD/CAM software to design orthosis. Modifications include relief areas for cranial bossing, circumference adjustments for growth, and rotational corrections. Modified digital files sent to central facility for carving of positive model and fabrication of definitive orthosis. Practitioner fits device to patient. Device applies static/gentle pressure to prominent cranial regions to improve symmetry/shape. Digital records of scans and modifications maintained for each patient.
Clinical Evidence
No clinical data provided. Substantial equivalence based on technological characteristics and intended use.
Technological Characteristics
Thermoplastic helmet; USP Class VI materials; polypropylene or polypropylene-polyethylene copolymer outer shell; medium density polyethylene foam inner lining. Custom-fabricated via 3D laser scanning and CAD/CAM software. No change to fundamental scientific technology.
Indications for Use
Indicated for infants 3-18 months old with moderate to severe non-synostotic positional plagiocephaly (plagiocephalic, brachycephalic, or scaphocephalic shapes). Contraindicated for infants with synostosis or hydrocephalus.
Regulatory Classification
Identification
A cranial orthosis is a device that is intended for medical purposes to apply pressure to prominent regions of an infant's cranium in order to improve cranial symmetry and/or shape in infants from 3 to 18 months of age, with moderate to severe nonsynostotic positional plagiocephaly, including infants with plagiocephalic-, brachycephalic-, and scaphocephalic-shaped heads.
Special Controls
*Classification.* Class II (special controls) (prescription use in accordance with § 801.109 of this chapter, biocompatibility testing, and labeling (contraindications, warnings, precautions, adverse events, instructions for physicians and parents)).
In addition to the general controls of the act, the Dynamic Orthotic Cranioplasty - DOC™ Band is subject to the following special controls in order to provide reasonable assurance of the safety and effectiveness: (1) The sale, distribution and use of this device are restricted to prescription use in accordance with 21 CFR 801.109. (2) The labeling must include (a) contraindications for the use of the device on infants with synostosis or with hydrocephalus; (b) warnings indicating the need: (i) to evaluate head circumference measurements and neurological status at intervals appropriate to the infant’s age and rate of head growth, and to describe steps that should be taken in order to reduce the potential for restriction of cranial growth and possible impairment of brain growth and development; (ii) to evaluate the skin at frequent intervals, e.g., every three to four hours, and to describe steps that should be taken if skin irritation or breakdown occurs; (c) precautions indicating the need: (i) to additionally treat torticollis, if the positional plagiocephaly is associated with torticollis; (ii) to evaluate device fit and to describe the steps that should be taken in order to reduce the potential for restriction of cranial growth, possible impairment of brain growth and development and skin irritation and/or breakdown; (iii) to evaluate the structural integrity of the device and to describe the steps that should be taken to reduce the potential for the device to slip out of place and cause asphyxiation or trauma to the eyes or skin; (d) adverse events, i.e., skin irritation and breakdown that have occurred with the use of this device; (e) clinician’s instructions for casting the infant, for fitting the device, and for care and use of the device; and (f) parents’ instructions for care and use of the device. (3) The materials must be assessed for biocompatibility with testing appropriate for long term direct skin contact.
{0}------------------------------------------------
K072566 pg 1 of 5
## 510(k) Summary
The following summary is provided in pursuant to Section 513 of the Federal Food, Drug and Cosmetic Act.
## 1. DATE PREPARED
December 27, 2007
# 2. APPLICANT INFORMATION
Hanger Prosthetics & Orthotics, Inc. 2 Bethesda Metro Center Bethesda, MD 20814
JAN - 9 2008
Contact Person:
Kaia Busch C.P.O.
(206). 923.0476 (telephone) (206).923.0366 (facsimile)
Outside Regulatory Counsel:
Ivan J. Wasserman Manatt, Phelps, & Phillips, LLP 700 12th Street, NW Suite 1100 Washington, D.C. 20005 Tel. (202) 585-6529
#### 3. DEVICE NAME
Proprietary Name:
Hanger Cranial Band™
Common/Usual Name:
Cranial Orthosis
Classification Names and numbers:
Cranial Orthosis, laser scan, OAN Cranial Orthosis, MVA 21 CFR § 882.5970
{1}------------------------------------------------
# 4. DEVICE DESCRIPTION AND INTENDED USE
The Hanger Cranial Band™ is a thermoplastic helmet prepared with USP Class VI materials; a polypropylene or polypropylene-polyethylene copolymer outer shell. The Hanger Cranial Band™ was initially cleared on December 8, 2000, under 510(k) K001669. This submission provides for the use of a hand held 3-dimensional laser scanner to acquire accurate measurements and a CAD/CAM system to fabricate the orthosis.
A medium density polyethylene foam inner lining is thermo-bonded to this shell. The device is custom fabricated for individual patients by obtaining accurate measurements via a hand held 3-dimensional laser scanner. Clinical measurements of the infant's cranium are taken from the digital file. The addition of digital imaging allows for increased clinical accuracy and objective clinical documentation. The scan is then modified utilizing a CAD/CAM technology package. The 3-dimensional cranial scan is modified utilizing computer aided design tools to add or remove material, increase or decrease the circumference of model to aid in fit and functionality of the cranial band/orthosis. Modifications include but are not limited to: relief areas opposite of cranial bossing, circumference modifications for growth and remolding, suspension, and rotational modifications. The modified file is then emailed to the central manufacturing facility for fabrication and delivery. The modified file measurements are validated and a positive model carved for fabrication.
{2}------------------------------------------------
K072566 pg 3 of 5
The carved model is evaluated for clinical accuracy and used to fabricate the definitive orthosis. The definitive Hanger Cranial Orthosis is processed through a quality control check list to ensure clinical accuracy, appropriate fabrication techniques, and quality assurance. The Hanger Cranial Band is sent to the practitioner for patient fit and delivery. A digital record of each patient scan and modifications will be maintained on file at Hanger for each patient.
## Indications for Use:
Intended for medical purposes to apply static or gentle pressure to prominent regions of an infant's cranium to improve cranial symmetry or shape. To treat infants from three to eighteen months of age with moderate to severe non-synostotic positional plagiocephaly, including plagiocephalic-, brachycephalic-, scaphocephalic-shaped heads.
### Contraindications for Use:
Infants with synostosis and or hydrocephalus
#### 5. PREDICATE DEVICE
- K014012 (Cranial Technologies the Doc Band) പ.
- b. Substantial Equivalence Comparison
Hanger's device is custom fabricated for individual patients by obtaining accurate measurements via a hand held 3-dimensional laser scanner.
{3}------------------------------------------------
K072566 pg 4 of 5
Clinical measurements of the infant's cranium are taken from the digital file. The addition of digital imaging allows for increased clinical accuracy and objective clinical documentation. The scan is then modified utilizing a CAD/CAM technology package. The 3-dimensional cranial scan is modified utilizing computer aided design tools to add or remove material, increase or decrease the circumference of model to aid in fit and functionality of the cranial band/orthosis. Modifications include but are not limited to: relief areas opposite of cranial bossing, circumference modifications for growth and remolding, suspension, and rotational modifications. The modified file is then emailed to the central manufacturing facility for fabrication and delivery. The modified file measurements are validated and a positive model carved for fabrication. The carved model is evaluated for clinical accuracy and used to fabricate the definitive orthosis. The definitive Hanger Cranial Orthosis is processed through a quality control check list to ensure clinical accuracy, appropriate fabrication techniques, and quality assurance. The Hanger Cranial Band is sent to the practitioner for patient fit and delivery. A digital record of each patient scan and modifications will be maintained on file at Hanger for each patient.
Cranial Technologies uses a different system, the C3D Cranial Imaging System to obtain patient head shape measurements and a different CAD/CAM System to create a model used in fabricating the device.
{4}------------------------------------------------
KU7A566 pg 5 of 5
#### PERFORMANCE CHARACTERISTIC SUMMARY 6.
There has been no change to the performance characteristics of the device system.
#### TECHNOLOGICAL CHARACTERISTICS 7.
·
There has been no change to the fundamental scientific technology.
{5}------------------------------------------------
DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/5/Picture/1 description: The image shows the logo for the Department of Health & Human Services (HHS). The logo features a stylized caduceus, a symbol often associated with medicine and healthcare, with a distinctive design. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the caduceus, indicating the department's name and national affiliation. The logo is presented in black and white.
Public Health Service
JAN - 9 2008
ood and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Manatt, Phelps & Phillips % Mr. Ivan J. Wasserman 700 12th Street. NW Washington, DC 20005
K072566 Re: Trade/Device Name: Hanger Cranial Band Regulation Number: 21 CFR 882.5970 Regulation Name: Cranial orthosis Regulatory Class: II Product Code: OAN, MVA Dated: January 3, 2008 Received: January 3, 2008
Dear Mr. Wasserman:
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 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.
{6}------------------------------------------------
Page 2 - Mr. Ivan J. Wasserman
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 Center for Devices and Radiological Health's (CDRH's) Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding postmarket surveillance, please contact CDRH's Office of Surveillance and Biometric's (OSB's) Division of Postmarket Surveillance at (240) 276-3474. For questions regarding the reporting of device adverse events (Medical Device Reporting (MDR)), please contact the Division of Surveillance Systems at (240) 276-3464. 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 vours,
Mark N Mulkersan
Mark N. Melkerson Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{7}------------------------------------------------
# Indications for Use
510(k) Number (if known): K072566
Device Name: Hanger Cranial BandTM
Indications for Use:
Intended for medical purposes to apply static or gentle pressure to prominent regions of an infant's cranium to improve cranial symmetry or shape. To treat infants from three to eighteen months of age with moderate to severe non-synostotic positional plagiocephaly, including plagiocephalic-, brachycephalic-, scaphocephalic-shaped heads.
× Prescription Use (Part 21 CFR 801 Subpart D)
510(k) Number.
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
(Division Sign-Off) Concurrence of CDRH, Office of Device Evaluation (ODE)
Division of General, Restorative,
and Neurological Devices
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.