(88 days)
The GoLox -93 is intended to provide supplemental oxygen to patients who have difficulty extracting oxygen from the air that they breathe. The patients would normally receive oxygen via a nasal cannula. It is intended for ambulatory use inside and outside of the home. It is not intended to be life supporting or life sustaining. The device has no contraindications.
The GoLox-93 is a double walled vacuum insulated cryogenic vessel designed to hold approximately 1 pound of liquid oxygen at a pressure of 22 psig with heat exchange tubing, relief valves and a pneumatic conserving device housed in a plastic enclosure. Oxygen is stored under low pressure in its liquid state where the pressure is limited by the pressure relief valve. The liquid oxygen is converted to near ambient temperature gaseous oxygen through a system of tubes and warming coils for delivery to patients requiring supplemental oxygen by a single lumen cannula. The device is not intended as life support or life sustaining. The GoLox-93 is a mechanical device and does not contain any electronics or software. The GoLox-93 is designed to be refilled only from Respironics Home Liquefaction Systems.
The provided text describes a medical device, the Respironics GoLox-93, which is a portable liquid oxygen unit. It's a 510(k) premarket notification, indicating it's a modification of a previously cleared device. The document focuses on demonstrating substantial equivalence to predicate devices rather than providing a detailed study proving performance against specific acceptance criteria for a novel device.
Therefore, most of the requested information regarding acceptance criteria, study design, sample sizes, expert qualifications, ground truth, and comparative effectiveness studies is not available in the provided text. The text confirms that this is a device modification submission, where the primary goal is to show the modified device is substantially equivalent to existing, legally marketed devices.
Here's what can be extracted based on the provided text:
1. Table of acceptance criteria and the reported device performance:
This information is not provided in the document. The submission is for a device modification, and the focus is on showing similarity to predicate devices rather than establishing new acceptance criteria for a novel device. The document states:
- "The GoLox-93 is identical to the GoLox USP except for the fill connection."
- "Additional testing provided includes verification that the fill connector mates with liquefaction systems and not with stationary vessels."
While specific performance metrics are not given, the implied "acceptance criteria" for this modification would be:
- Fill Connection Compatibility: The new fill connector mates only with 93% liquid oxygen liquefaction systems.
- Fill Connection Incompatibility: The new fill connector does not mate with USP oxygen stationary vessels.
The "reported device performance" related to these implied criteria is simply that the "verification" testing was done and confirmed this functionality. No numerical performance data (e.g., error rates, success rates) is presented.
2. Sample size used for the test set and the data provenance:
Not explicitly stated. The document mentions "Comprehensive testing was performed" for the predicate device (GoLox USP vs. PLOX) and "Additional testing provided includes verification that the fill connector mates with liquefaction systems and not with stationary vessels" for the GoLox-93 modification. However, no sample sizes (e.g., number of fill connectors tested, number of liquefaction systems/stationary vessels used) or data provenance (country, retrospective/prospective) are detailed.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
Not applicable/Not stated. This type of study (e.g., expert-reviewed images for an AI algorithm) is not described in this submission. The "ground truth" for the fill connector modification would likely be a direct functional test, not expert consensus on data.
4. Adjudication method (e.g. 2+1, 3+1, none) for the test set:
Not applicable/Not stated. Adjudication methods are typically used for interpreting subjective data (like medical images) where multiple experts might disagree. The testing described for the GoLox-93 (fill connector compatibility) is an objective functional test and would not require such adjudication.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:
Not applicable. This device is a mechanical portable liquid oxygen unit, not an AI-powered diagnostic or assistive tool for human readers. Therefore, an MRMC study is irrelevant.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
Not applicable. This is a mechanical device, not an algorithm.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc):
For the GoLox-93 fill connector modification, the "ground truth" would be direct functional testing and observation of whether the connector successfully mated with the intended (93% liquefaction systems) and failed to mate with the unintended (USP stationary vessels) connections.
8. The sample size for the training set:
Not applicable. This is a mechanical device, not a machine learning algorithm that requires a training set.
9. How the ground truth for the training set was established:
Not applicable. As stated above, this is a mechanical device, not a machine learning algorithm.
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Image /page/0/Picture/2 description: The image contains a sequence of handwritten digits and a letter. The sequence starts with the letter 'K', followed by the digits '081779'. The digits are written in a cursive style, with some connections between them.
GoLox -93
| Date of Submission | June 20, 2008 |
|---|---|
| Official Contact | Zita A. YurkoDirector Regulatory AffairsRespironics, Inc.1740 Golden Mile HighwayMonroeville, PA 15146zita.yurko@respironics.com724-387-4120 t724-882-4120 c724-387-7490f |
| Classification Reference | 21 CFR 868.5655 |
| Product Code | BYJ - Portable Liquid Oxygen Unit |
| Common/Usual Name | Portable Liquid Oxygen Unit |
| Proprietary Name | Respironics GoLox-93 |
| Predicate Device(s) | Respironics GoLox USP (K072723)Caire Spirit Model HAS (K050153) |
| Reason for submission | device modification |
Substantial Equivalence
The GoLox-93 has the following similarities to the previously cleared predicate device:
- ロ Same intended use.
- ロ Same operating principle.
- D Same technology.
- D Same manufacturing process.
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The GoLox-93 is a modification to the GoLox USP (K072723) to enable it to be filled with 93% liquid oxygen from the Respironics Home Liquefactions Systems. The GoLox- 93 is identical to the GoLox USP except for the fill connection. The fill connector has changed to allow filling with 93% oxygen from liquefaction systems only and prevents filling with USP oxygen from stationary vessels.
The GoLox USP (K072723) was a modification of the Respironics PLOX (K050414). Comprehensive testing was performed to determine equivalence between the GoLox USP (K072723 and PLOX (K050414). Additional testing provided includes verification that the fill connector mates with liquefaction systems and not with stationary vessels.
Intended Use
The GoLox-93 is intended to provide supplemental oxygen to patients who have difficulty extracting oxygen from the air that they breathe. The patients would normally receive oxygen via a nasal cannula. It is intended for ambulatory use inside and outside of the home. It is not intended to be life supporting or life sustaining. The device has no contraindications.
Device Description
The GoLox-93 is a double walled vacuum insulated cryogenic vessel designed to hold approximately 1 pound of liquid oxygen at a pressure of 22 psig with heat exchange tubing, relief valves and a pneumatic conserving device housed in a plastic enclosure. Oxygen is stored under low pressure in its liquid state where the pressure is limited by the pressure relief valve. The liquid oxygen is converted to near ambient temperature gaseous oxygen through a system of tubes and warming coils for delivery to patients requiring supplemental oxygen by a single lumen cannula. The device is not intended as life support or life sustaining. The GoLox-93 is a mechanical device and does not contain any electronics or software. The GoLox-93 is designed to be refilled only from Respironics Home Liquefaction Systems.
(End of Tab.)
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/2/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with its wings spread, positioned to the right of the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA". The text is arranged in a circular fashion around the left side of the eagle.
Public Health Service
SEP 1 9 2008
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Ms. Zita A. Yurko Director, Regulatory Affairs Respironics, Incorporated Sleep & Home Respiratory Group 1740 Golden Mile Highway Monroeville, Pennsylvania 15146
Re: K081779 Trade/Device Name: GoLox-93 Regulation Number: 21 CFR 868.5655 Regulation Name: Portable Liquid Oxygen Unit Regulatory Class: II Product Code: BYJ Dated: June 20, 2008 Received: June 23, 2008
Dear Ms. Yurko:
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 vour 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.
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Page 2 - Ms. Yurko
Please be advised that FDA's issuance of a substantial equivalence determination does not mcan 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 (Scctions 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 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 yours,
Z.Kommell-Lendimo Bell
Chiu Lin, Ph.D. Director Division of Anesthesiology, General Hospital, Infection Control and Dental Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosures
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Indications for Use
510(k) Number (if known): ________________
Device Name: __ GoLox-93
The GoLox -93 is intended to provide supplemental oxygen to patients who have difficulty extracting oxygen from the air that they breathe. The patients would normally receive oxygen via a nasal cannula. It is intended for ambulatory use inside and outside of the home. It is not intended to be life supporting or life sustaining. The device has no contraindications.
Prescription Use _____________________________________________________________________________________________________________________________________________________________ Prescription Use ____________________________________________________________________________________________________________________________________________________________
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
un 7h
(Division Sign-Off) Division of Anesthesiology, General Hospital Infection Control, Dental Devices
510(k) Number:
§ 868.5655 Portable liquid oxygen unit.
(a)
Identification. A portable liquid oxygen unit is a portable, thermally insulated container of liquid oxygen that is intended to supplement gases to be inhaled by a patient, is sometimes accompanied by tubing and an oxygen mask. An empty portable liquid oxygen unit is a device, while the oxygen contained therein is a drug.(b)
Classification. Class II (performance standards).