(87 days)
The Nonin® Avant® Model 4000 Digital Pulse Oximetry System is indicated for use in measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate of adult, pediatric, and infant patients. It is indicated for spot-checking and / or continuous monitoring of patients during both no motion and motion conditions, and for patients who are well or poorly perfused.
The Avant Model 4000 Digital Pulse Oximetry System is a wireless pulse oximeter that includes a portable, tabletop display unit (Avant 4000) and a wrist-worn patient module Avant (4100). The system determines arterial oxyhemoglobin saturation (SpO2) by measuring the absorption of red and infrared light passed through the tissue. Changes in absorption caused by pulsation of blood in the vascular bed are used to determine arterial saturation and pulse rate. Using Bluetooth® wireless technology, the system allows functional oxygen saturation of arterial hemoglobin (SpO2), pulse rate, and plethysmographic data to be transmitted from the wrist worn (4100) module to a compatible Bluetooth-enabled device tabletop monitor (4000). Bluetooth wireless technology is used in the Avant, Model 4000 Pulse Oximetry System to transmit data from the 4100 Patient Module to the 4000 Display Unit. The technology allows replacement of simple point-to-point cabling. The low power radio (used in the Avant System) covers 30 feet (spherical radius) with a total bandwidth of 1 Mbps, and a theoretical 720 kbps data payload. The Bluetooth radio is highly immune to noise and simple to implement on silicon and software. In order to achieve robust connections, Bluetooth employs several techniques: very fast frequency hopping, several layers of checks and Cyclical Redundancy Checks (CRCs), packet retransmission, and relatively short data packets. Bluetooth offers the features of robust security and authentication, using the SAFER+ algorithm with 128 bit keys for secure encryption and authentication. The Avant Model 4000 has been tested and verified to meet the specifications of the Bluetooth revision 1.1 and is listed by the Bluetooth SIG (Special Interest Group). It implements the Generic Access Profile (GAP) and Serial Port Profiles and fully implements security and authentication. The Avant Model 4000 System has also been granted Federal Communications Commission (FCC) authorization. Nonin's system eliminates the connection from the wristworn oximeter module (4100) to the display unit (4000), giving patients increased ability to move freely without being hindered by cables. Nonin's patient module uses a class II Bluetooth radio with a battery life of approximately 120 hours and a range of approximately 30 feet (spherical radius). The display unit has a minimum operating life of 18 hours with a fully charged battery. When the AC adaptor is plugged into the display unit, power is divided between operating the device and charging the battery pack. The display unit can also be used continuously with the AC adaptor. The Avant 4000 display uses light-emitting diodes (LED) components to present patient's SpO2 and pulse rate values, as well as alarm limit and volume settings. The Avant™ 4000 can be powered with a 12 VDC AC adapter or with an integral sealed 7.2-volt rechargeable NiMH battery pack. The Avant 4100 patient module is powered with two 1.5volt AA batteries. The Avant 4000 System includes adjustable audible and visual pulse rate, oxygen saturation, and perfusion alarms. It also includes a variety of advanced features, including low battery alarms, event markers, and real-time and printon-demand data outputs. The Model 4000 System contains ISP2+ software. The improved signal processing software addresses the complaints about the effects of motion artifact on pulse oximeters by better identifying a valid pulse.
The provided text does not contain detailed information about specific acceptance criteria and a study proving the device meets them. Instead, it describes a medical device (Nonin Avant Model 4000 Digital Pulse Oximetry System) and its intended use, followed by a 510(k) clearance letter from the FDA.
The 510(k) clearance process focuses on demonstrating substantial equivalence to a predicate device, rather than detailed performance against explicit acceptance criteria in the same way a de novo or PMA submission might. The document states that the device "successfully undergone both bench and clinical testing in order to demonstrate that it has appropriate functional features and is substantially equivalent to the predicate devices." However, it does not provide the specifics of these tests, including the acceptance criteria or detailed performance results.
Therefore, I cannot provide a table of acceptance criteria and reported device performance, nor details on sample sizes, ground truth establishment, expert qualifications, or comparative effectiveness studies, as this information is not present in the provided text.
Based on the available text, here's what can be inferred or explicitly stated:
1. A table of acceptance criteria and the reported device performance:
- Acceptance Criteria: Not explicitly stated in the provided text. The submission is for substantial equivalence to a predicate device (Nonin's Avant® Model 4000 Pulse Oximetry System cleared under K041156). Therefore, the implicit acceptance criteria would be that the new device performs at least as well as, and has similar specifications to, the predicate device.
- Reported Device Performance:
- Functional Features and Substantial Equivalence: The device has "successfully undergone both bench and clinical testing in order to demonstrate that it has appropriate functional features and is substantially equivalent to the predicate devices."
- Wireless Technology: Uses Bluetooth® wireless technology (Class II, 1 Mbps total bandwidth, theoretical 720 kbps data payload), covers 30 feet (spherical radius).
- Battery Life: Patient module (Avant 4100) has approximately 120 hours, display unit (Avant 4000) has a minimum operating life of 18 hours.
- Signal Processing: Includes ISP2+ software, which "addresses the complaints about the effects of motion artifact on pulse oximeters by better identifying a valid pulse."
2. Sample size used for the test set and the data provenance:
- Not specified. The document only mentions "bench and clinical testing."
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
- Not specified.
4. Adjudication method for the test set:
- Not specified.
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:
- This device is a pulse oximeter, not an AI-assisted diagnostic tool that would typically involve human readers interpreting output. Therefore, an MRMC comparative effectiveness study involving human readers and AI assistance is not applicable and not mentioned.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
- The device is a medical measurement instrument. Its performance would inherently be a "standalone" or "algorithm only" performance for its core function (measuring SpO2 and pulse rate). The document states it underwent "bench and clinical testing" to demonstrate functional features and substantial equivalence.
7. The type of ground truth used:
- Not explicitly stated. For pulse oximeters, ground truth in clinical testing typically involves arterial blood gas analysis (co-oximetry) for SpO2 measurements. Given this is a 510(k) for a device that measures physiological parameters, this is the most likely form of ground truth for accuracy testing.
8. The sample size for the training set:
- Not specified. The document does not mention "training set" as it would for an AI/ML device. The ISP2+ software, while improved signal processing, is not described as an AI/ML algorithm requiring a distinct "training set" in the context it's presented.
9. How the ground truth for the training set was established:
- Not applicable based on the information provided regarding the nature of the device and its software.
§ 870.2700 Oximeter.
(a)
Identification. An oximeter is a device used to transmit radiation at a known wavelength(s) through blood and to measure the blood oxygen saturation based on the amount of reflected or scattered radiation. It may be used alone or in conjunction with a fiberoptic oximeter catheter.(b)
Classification. Class II (performance standards).