The intended use of the hyperbaric chambers have been established by the Committee on Hyperbaric Oxygen Therapy of the Undersea and Hyperbaric Medical Society (founded in 1967 to foster exchange of data on the physiology and medicine of commercial and military diving). The committee is comprised of practitioners and scientific investigators in the fields of internal medicine, infectious diseases, pharmacology, emergency medicine, general surgery, orthopedic surgery, trauma surgery, thoracic surgery, otolaryngology, oral and maxillofacial surgery and aerospace medicine. The committee is responsible for continually reviewing research and clinical data in determining the safety and efficacy of hyperbaric oxygen. Currently, there are thirteen indications that are approved by the committees these thirteen indications were accepted based on sound physiologic rationale, in vivo or in vitro studies that demonstrate effectiveness, controlled animal studies, prospective controlled clinical studies and extensive clinical experience from multiple hyperbaric medicine centers. These thirteen indications have been recommended for third-party reimbursement and most insurance carriers have established reimhursement policy based on the recommendations. The thirteen indications are: - 1. Air or Gas embolism - Carbon Monoxide Poisoning 2. - Carbon Monoxide Poisoning Complicated by Cyanide Poisoning - 3. Clostridial Myonecrosis and Myonecrosis (Gas Gangrene) - Crush Injury, Compartment Syndrome and Other Acute Traumatic Ischemias 4. - న. Decompression Sickness - Arterial Insufficiences 6. Central Retinal Artery Occlusion - Enhancement of Healing In Selected Problem Wounds - 7. Severe Anemia - 8. Intracranial Abscess - ರಿ. Necrotizing Soft Tissue Infections - 10. Osteomyelitis (Refractory) - 11. Delayed Radiation Injury (Soft Tissue and Bony Necrosis) - 12. Comprised Grafts and Flaps - 13. Thermal Burns
Device Story
Monoplace hyperbaric chamber; administers 100% oxygen at pressures up to 3 atmospheres absolute (3 ATA). Mechanical/pneumatic system; operator-controlled pressurization/depressurization profiles to minimize patient discomfort. Used in clinical settings by trained personnel. Provides high-concentration oxygen environment for therapeutic treatment of specified conditions. Patient interface ports allow for monitoring and IV fluid delivery. Output is the controlled hyperbaric environment; clinical decision-making based on established hyperbaric medicine protocols.
Clinical Evidence
No clinical data. Performance testing confirms device operates as designed per approved specifications. Device designed/manufactured in accordance with ASME Boiler and Pressure Vessel Code, ASME PVHO-1, and NFPA 99.
Technological Characteristics
Monoplace pressure chamber; 41-inch internal diameter seamless acrylic cylinder; hard anodized aluminum cover and door assembly; stainless steel tie rods/nuts. Operates up to 3 ATA (29.4 psig). Pressurization rates 0.4-5.0 psig/minute. Mechanical/pneumatic control system. No software/algorithm described.
A hyperbaric chamber is a device that is intended to increase the environmental oxygen pressure to promote the movement of oxygen from the environment to a patient's tissue by means of pressurization that is greater than atmospheric pressure. This device does not include topical oxygen chambers for extremities (§ 878.5650).
Predicate Devices
Sechrist Industries, Inc., Model 3200P/PR Hyperbaric Chamber (K950386)
Submission Summary (Full Text)
{0}------------------------------------------------
Ki00268
## APR 2 6 2010
### 510(K) SUMMARY
| Sechrist Industries, Inc., 4100H/HR Hyperbaric Chamber (K100268) | | | |
|------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------|----------------|---------------|
| Submitter: Sechrist Industries, Inc.<br>4225 E. La Palma Ave.<br>Anaheim, CA 92807 | | Date Prepared: | March 3, 2010 |
| Contact: | Victor Arellano, Director, Quality Assurance & Regulatory Affairs<br>Phone: 714-579-8344 Fax: 714-579-8424 | | |
| Trade Name | : Model 4100H/HR Hyperbaric Chamber | | |
| Common Name | : Hyperbaric Chamber | | |
| Classification Name | : Chamber, Hyperbaric (Title 21, C.F.R. § 868.5470) | | |
| Product Code | : CBF | | |
| Predicate Device | : Sechrist Industries, Inc., Model 3200P/PR Hyperbaric Chamber (K950386) | | |
#### Intended Use
The intended use of the hyperbaric chambers have been established by the Committee on Hyperbaric Oxygen Therapy of the Undersea and Hyperbaric Medical Society (founded in 1967 to foster exchange of data on the physiology and medicine of commercial and military diving). The committee is comprised of practitioners and scientific investigators in the fields of internal medicine, infectious diseases, pharmacology, emergency medicine, general surgery, orthopedic surgery, trauma surgery, thoracic surgery, otolaryngology, oral and maxillofacial surgery and aerospace medicine. The committee is responsible for continually reviewing research and clinical data in determining the safety and efficacy of hyperbaric oxygen. Currently, there are thirteen indications that are approved by the committees these thirteen indications were accepted based on sound physiologic rationale, in vivo or in vitro studies that demonstrate effectiveness, controlled animal studies, prospective controlled clinical studies and extensive clinical experience from multiple hyperbaric medicine centers. These thirteen indications have been recommended for third-party reimbursement and most insurance carriers have established reimhursement policy based on the recommendations.
The thirteen indications are: -
- 1. Air or Gas embolism
- Carbon Monoxide Poisoning 2.
- Carbon Monoxide Poisoning Complicated by Cyanide Poisoning
- 3. Clostridial Myonecrosis and Myonecrosis (Gas Gangrene)
- Crush Injury, Compartment Syndrome and Other Acute Traumatic Ischemias 4.
- న. Decompression Sickness
- Arterial Insufficiences 6.
Central Retinal Artery Occlusion
Enhancement of Healing In Selected Problem Wounds
- 7. Severe Anemia
- 8. Intracranial Abscess
- ರಿ. Necrotizing Soft Tissue Infections
- 10. Osteomyelitis (Refractory)
- 11. Delayed Radiation Injury (Soft Tissue and Bony Necrosis)
- 12. Comprised Grafts and Flaps
- 13. Thermal Burns
{1}------------------------------------------------
### Technological Characteristics
The Sechrist Model 4100H/HR Hyperbaric Chamber is a monoplace pressure chamber designed to administer 100% oxygen at pressure greater than ambient, up to 3 atmospheres absolute (30 ps) of pressure. The hyperbaric chamber is a mechanical and pneumatic system capable of controlling the operator defined pressurization profiles.
A hyperbaric oxygen chamber is a pressure vessel and control system that is designed to provide patient exposure to a very high oxygen concentration at higher than normal atmospheric pressure. Titration of the oxygen exposure is controlled by selecting the pressure achieved within the pressure vessel. Pressurization and de-pressurization rates are selected to minimize patient discomfort while increasing and decreasing the chamber pressure. Typical monoplace chambers are capable of pressurizing to 3 ATA (29.4 psig above atmospheric pressure). Typical pressurization and de-pressurization rates are in the range of 0.4 to 5.0 psig/minute.
The Model 4100H/HR is constructed with a horizontal 41 inch internal diameter seamless acrylic cylinder. One end is equipped with a hard anodized aluminum cover and the other end with a hard anodized door assembly, with access ports available for patient interface (such as patient monitoring, delivery of intravenous fluids, etc.) locking mechanism and interlocking safety device. The cylinder, end cover and the door assembly are assembled together with stainless steel tie rods/nuts and hinge assembly. The Model 4100 comes in two configurations (4100H and 4100HR). In the Standard configuration-4100H-the control panel is located on the left of the chamber when facing the door. In the Reverse configuration-4100HR-the control panel is located on the right side of the chamber.
### Performance Data
Performance testing conducted confirms the device operates as designed. The Model 4100H/HR Hyperbaric Chamber functioned as intended per its approved specifications.
A performance standard regulation Section 514 of the Food, Drug and Cosmetic Act has not been promulgated for this device type.
However, the device is designed and manufactured in accordance with the following industry standards:
- Section VIII, Division 1 of the American Society of Mechanical Engineers (ASME) Boiler and ● Pressure Vessel Code
- ASME PVHO-1 Pressure Vessels for Human Occupancy Standard .
- NFPA 99 Safety Standard for Health Care Facilities, Chapter 20 D
The following quality assurance measures were applied to the development of the 4100H/HR Hyperbaric Chamber - Requirements specifications reviews, performance testing and validation, environmental testing, electrical safety/EMC testing manufacturing process control procedures, process validation, and design controls.
### Substantial Equivalence
The Model 4100H/HR Hyperbaric Chamber is as safe and effective as the Model 3200P/PR Hyperbaric Chamber. The Model 4100H/HR Hyperbaric Chamber has the same intended uses, similar technological characteristics, and similar principles of operation as its predicate device. The minor technological differences between the Model 4100H/HR Hyperbaric Chamber Neptune and its predicate denvioler raise no new questions of safety or effectiveness. Thus, the Model 4100H/HR Hyperbaric Chamber Veotilator is substantially equivalent.
{2}------------------------------------------------
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo consists of a stylized depiction of an eagle or bird-like figure with three overlapping, curved lines forming its body and wings. The logo is encircled by the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged in a circular fashion around the bird symbol.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
APR 2 3 2010
Mr. Victor Arellano Director Quality Assurance & Regulatory Affairs -Sechrist Industries, Incorporated 4225 East La Palma Avenue Anaheim, California 92807
Re: K100268
Trade/Device Name: Sechrist Model 4100H/HR Hyperbaric Oxygen Chamber Regulation Number: 21 CFR 868.5470 Regulation Name: Hyperbaric Chamber Regulatory Class: II Product Code: CBF Dated: April 9, 2010 Received: April 12, 2010
Dear Mr. Arellano:
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.
{3}------------------------------------------------
### Page 2 - Mr. Arellano
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 forth in the quality systems (OS) 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.
Nh for
Anthony Watson, B.S., M.S., M.B.A. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{4}------------------------------------------------
## Indications for Use
### 510(k) Number (if known): K100268
### Device Name: Sechrist Model 4100H/HR Hyperbaric Chamber
#### Indications for Use:
The intended use of the hyperbaric chambers have been established by the Committee on Hyperbaric Oxygen Therapy of the Undersea and Hyperbaric Medical Society (founded in 1967 to foster exchange of data on the physiology and medicine of commercial and military diving). The committee is comprised of practitioners and scientific investigators in the fields of internal medicine, infectious diseases, pharmacology, emergency medicine, general surgery, orthopedic surgery, trauma surgery, thoracic surgery, otolaryngology, oral and maxillofacial surgery and aerospace medicine. The committee is responsible for continually reviewing research and clinical data in determining the safety and efficacy of hyperbaric oxygen. Currently, there are thirteen indications that are approved by the committee; these thirteen indications were accepted based on sound physiologic rationale, in vivo or in vitro studies that demonstrate effectiveness, controlled animal studies, prospective controlled clinical studies and extensive clinical experience from multiple hyperbaric medicine centers. These thirteen indications have been recommended for thirdparty reimbursement and most insurance carriers have established reimbursement policy based on the recommendations.
The thirteen indications are:
1. Air or Gas embolism
- 2. Carbon Monoxide Poisoning Carbon Monoxide Poisoning Complicated by Cyanide Poisoning
- 3. Clostridial Myonecrosis and Myonecrosis (Gas Gangrene)
- Crush Injury, Compartment Syndrome and Other Acute Traumatic Ischemias এ..
- 5. Decompression Sickness
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 OF NEEDED)
Concurrence of CDRH, Office of In Vitro Diagnostic Devices (OIVD)
L. Schult
Page 1 of 2
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
510(k) Number: K100268
{5}------------------------------------------------
# Indications for Use
### 510(k) Number (if known): K100268
Device Name: Sechrist Model 4100H/HR Hyperbaric Chamber
Indications for Use:
- 6. Arterial Insufficiencies Central Retinal Artery Occlusion Enhancement of Healing In Selected Problem Wounds
- 7. Severe Anemia
- 8. Intracranial Abscess
- 9. Necrotizing Soft Tissue Infections
- 10. Osteomyelitis (Refractory)
- 11. Delayed Radiation Injury (Soft Tissue and Bony Necrosis)
- 12. Compromise Grafts and Flaps
- 13. Thermal Burns
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 OF NEEDED)
Concurrence of CDRH, Office of In Vitro Diagnostic Devices (OIVD)
L Schulther
Division Sign-Off Office of In Vitro Diagnostic Device Evaluation and Safety
510(k) K100268
Page 2 of _ 2
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.