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The Medi Lift Essential Eye Mask is intended for facial stimulation and indicated for over-the-counter cosmetic use.

The Medi Lift Essential Eye Mask ("Medi Lift Eye") is composed of a mask made of silicone rubber which is worn on the upper part of the user's face, and covers the upper cheek and the periocular region outside the orbital rim. The mask contains two controllers with electrodes, which are attached to the mask. These controllers and electrodes deliver electrical pulses to stimulate facial muscles. The controllers are operated independently by pressing buttons on each controller. The mask also contains a heater to warm the upper cheek area for user relaxation, not for a medical purpose. The stimulation and heating functions are provided in separate modes and cannot be used simultaneously. The controllers attached to the mask contain two charging pins which allow for the built-in Lithium-ion battery that powers the device to be charged using a USB charging cable that is provided as part of the device. The device is not operated during charging.

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JOVS Electric Stimulation Beauty Device is indicated for over-the-counter aesthetic use including facial and neck stimulation.

The JOVS Electric Stimulation Beauty Device is a portable, non-sterile, reusable device designed to achieve the aesthetic effect. It mainly consists of main unit, charging and disinfection base, and power cable. The device is supplied by internal rechargeable lithium battery, which can be recharged by external charger through the Type-C charging cable. The device is un-usable when charging. The device is only home environment use, which has the spring electrode head (electric stimulation) to provide the following function:

The JOVS Electric Stimulation Beauty Device is indicated for over-the-counter aesthetic use including facial and neck stimulation.

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The MEGELIN LED Light Therapy Mask is an Over-the-Counter (OTC) light based device.

• Red light: Treatment of full-face wrinkles.
• Blue light (only suitable model JML1, JML3, JML5, JML6, JML9 Face mask): Treatment of mild to moderate inflammatory acne.

The MEGELIN LED Light Therapy Mask uses blue light (460nm) to treat acne. The MEGELIN LED Light Therapy Mask uses red light (660nm) to irradiate on the facial skin that help reduce wrinkles.

JML1, JML3, JML5, JML6, JML9 are face masks, with the only difference in energy density setting, while JML2, JML4, JML7, JML8, JML10 are neck masks with the only difference in energy density setting.

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Facial & Body Beauty Device is a hand-held device for over-the-counter aesthetic purposes.
The Microcurrent stimulation mode is indicated for facial skin stimulation and body skin stimulation.

Facial & Body Beauty Device is portable, non-sterile and reusable device, which is designed to achieve the aesthetic effect. The device mainly consists of a main unit and charging cable, and it is supplied by internal rechargeable lithium battery, which can be recharged by external charger through the provided charging cable, but the device can not be used when charging. To use the device, user should place the electrode head on the face and body. The device will automatically shut down after treatment time is over.

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Low Frequency Electric Stimulator: This Device uses microcurrent electrical to stimulate facial tissues for aesthetic purposes.

The Sunny Plus device is a Low Frequency Electric Stimulator that conveys current to the human body through a non-invasive electrode with a frequency of 10Hz. It is composed of the main body, handpiece with electrode tip, and foot switch. The device is operated through a graphic user interface on an LCD screen and is intended to be operated by medical professionals.

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The SX2500 / SX3800 Series devices uses microcurrent electrical energy to stimulate facial tissues for aesthetic purposes.

The subject devices, SX2500 & SX3800, under the NFO Product Code, uses microcurrent electrical energy to stimulate facial tissues for aesthetic purposes. The SX series uses applied accessories like probes, gloves or pads to deliver low electrical current to stimulation of facial tissues for aesthetic purposes.

The SX2500 & SX3800 is a powered microcurrent stimulator that uses electrical energy to stimulate facial tissues for aesthetic purposes. The SX2500 & SX3800 is substantially equivalent to the predicate devices compared in its product code class and has the same IFU. The SX2500 & SX3800 delivers signals independently to specific facial area points by way of channel ports via stainless steel probes and applicators substantially equivalent to the predicate device. The probes, gloves and pads referenced are the only patient contacting parts on the device that is substantially equivalent to the predicate device.

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Transcutaneous Electrical Nerve Stimulation (TENS):
The device is designed to be used for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, neck, upper extremities (arm), lower extremities (leg), abdomen and bottom due to strain from exercise or normal household work activities.

Electrical Muscle Stimulation (EMS):
The device is designed to be used to stimulate healthy muscles in order to improve or facilitate muscle performance.

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I am sorry, but the provided FDA 510(k) Clearance Letter for the "OTC 4-Channel Rechargeable TENS Unit" (K251429) does not contain the information requested regarding acceptance criteria and the study that proves the device meets those criteria.

This document is a clearance letter, which means the FDA has determined the device is substantially equivalent to legally marketed predicate devices. It focuses on the regulatory aspects of the clearance, such as:

• Device name and regulation
• Regulatory class and product code
• Substantial equivalence determination
• General controls and additional controls applicable to the device
• References to FDA guidance documents and regulations (e.g., Quality System regulation, UDI Rule)
• Contact information for the FDA

Specifically, the document does NOT include:

1. A table of acceptance criteria and reported device performance: This type of data would typically be found in the actual 510(k) submission, not the clearance letter.
2. Sample size used for the test set and data provenance: Again, this is detailed information from the testing portion of the submission.
3. Number of experts and their qualifications for establishing ground truth: Not mentioned in this regulatory letter.
4. Adjudication method: Not applicable or mentioned.
5. Multi-reader multi-case (MRMC) comparative effectiveness study results: This applies to AI/CAD devices, and the TENS unit is a physical device, so such a study would not be relevant.
6. Standalone (algorithm only) performance: Not applicable for a TENS unit.
7. Type of ground truth used: Not applicable or mentioned.
8. Sample size for the training set: Not applicable for a TENS unit (unless it incorporates some form of adaptive AI, which is not indicated here).
9. How the ground truth for the training set was established: Not applicable for a TENS unit.

The provided text only states the Indications for Use for the TENS and EMS functions. To find the specific performance data and acceptance criteria, you would need to access the full 510(k) submission (if it were publicly available in that format, which it generally is not for the detailed technical reports). The clearance letter confirms that the FDA reviewed such data and found it adequate for substantial equivalence, but it does not reproduce that data.

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TENS: The device is designed to be used for temporary relief of pain associated with sore and aching muscles in the shoulder, waist, back, neck, upper extremities (arm), lower extremities (leg), abdomen and bottom due to strain from exercise or normal household work activities.

EMS: The device is designed to be used to stimulate healthy muscles in order to improve and facilitate muscle performance. The device is designed to temporarily increase local blood circulation in healthy leg muscles.

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The provided FDA 510(k) Clearance Letter for Shenzhen Yicai Health Technology Co. Ltd's Transcutaneous Electrical Nerve Stimulator (TENS) does not contain the information requested in your prompt regarding acceptance criteria and a study proving the device meets those criteria, particularly for an AI/ML medical device.

This document is a standard clearance letter for a physical medical device (TENS/EMS) and focuses on regulatory aspects like:

• Substantial equivalence to predicate devices.
• General controls (registration, listing, GMP, labeling, misbranding).
• Quality System (QS) regulation.
• Unique Device Identification (UDI) requirements.
• Indications for Use.

It does not detail performance studies conducted to establish effectiveness or safety beyond establishing substantial equivalence to a predicate. Specifically, it lacks any mention of:

• A table of acceptance criteria and reported device performance.
• Sample sizes for test sets or data provenance.
• Number/qualifications of experts for ground truth.
• Adjudication methods.
• Multi-reader multi-case (MRMC) studies or effect sizes for human readers.
• Standalone algorithm performance.
• Type of ground truth used.
• Training set sample size or ground truth establishment for training.

Therefore,Based on the provided FDA 510(k) clearance letter, I cannot describe the acceptance criteria and the study that proves the device meets the acceptance criteria in the manner requested. The letter is for a physical medical device (Transcutaneous Electrical Nerve Stimulator) and outlines its regulatory clearance, not the details of a performance study, especially not one applicable to an AI/ML device as your detailed questions suggest.

The document does not contain any information related to:

1. A table of acceptance criteria and the reported device performance.
2. Sample sizes used for the test set and the data provenance.
3. Number of experts used to establish the ground truth for the test set and their qualifications.
4. Adjudication method for the test set.
5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, or its effect size.
6. If a standalone (algorithm only) performance study was done.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.).
8. The sample size for the training set.
9. How the ground truth for the training set was established.

This is a clearance letter for a device whose mechanism of action is electrical stimulation, not an AI/ML algorithm. The information you are seeking would typically be found in the 510(k) summary or the full submission, which are not included in this clearance letter.

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As a TENS device, the CP Relief Wand Rx - TENS/NMES is intended for use as an adjunctive therapy for pain management for medical purposes such as symptomatic relief of chronic intractable pain and relief of acute post surgical and post-traumatic pain.

As an EMS device, the CP Relief Wand Rx - TENS/NMES is intended for use for relaxation of muscle spasm, increasing local blood circulation, muscle re-education, prevention or retardation of disuse atrophy, prevention of venous thrombosis of the calf muscles immediately after surgery, and maintaining on increasing range of motion.

The CP Relief Wand Rx - TENS/NMES®("Wand") is a multitherapy medical device that combines the treatment capabilities of TENS (Transcutaneous Electrical Nerve Stimulation) and EMS (Electrical Muscular Stimulation).

The CP Relief Wand Rx - TENS/NMES is portable with self-contained electrodes. The device is powered by a standard non-rechargeable 9-volt alkaline battery. A charger is not used due to the low current drain and long battery life of the low power circuitry.

In operation, the electrode end of the CP Relief Wand Rx - TENS/NMES is positioned to touch the skin. The electrical pulses travel from one electrode, through the skin, through the underlying tissue, and back through the skin to the other electrode. Controls on the unit are provided for power, intensity, pulse width, and pulse polarity.

This FDA 510(k) clearance letter pertains to a TENS/NMES device, not an AI/ML-driven medical device. Therefore, the information typically found in a study proving an AI/ML device meets acceptance criteria (such as performance metrics, sample sizes for test/training sets, expert qualifications, and ground truth establishment) is not present in this document.

The document discusses the substantial equivalence of the "CP Relief Wand Rx - TENS/NMES" to predicate devices based on regulatory parameters, specifications, and the leveraging of performance testing from the primary predicate. It does not describe a new study specifically designed to assess the performance of the device against acceptance criteria in the context of an AI/ML model.

Therefore, I cannot provide the requested information for acceptance criteria and study details as they relate to an AI/ML device, as this document does not contain that type of data.

The document primarily focuses on:

• Substantial Equivalence: Arguing that the new device is as safe and effective as previously cleared devices.
• Expansion of Indications for Use: Adding EMS functionality, which is justified by comparison to a second predicate device that already has EMS indications.
• Performance Data (Leveraged from Predicate): Citing existing standards compliance from the primary predicate device, rather than new performance studies on an AI/ML algorithm.

If you have a document describing an AI/ML device and its validation study, I would be happy to analyze it for the requested information.

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The BTL-199 is intended to stimulate peripheral nerves for relief of chronic intractable pain, post-traumatic pain, post-surgical pain and/or for relief of chronic painful diabetic peripheral neuropathy in the lower extremities. The BTL-199 is for use on patients 18 and older.

The BTL-199 is an electromagnetic stimulator that delivers brief, focused electromagnetic pulses to non-invasively stimulate peripheral nerves, providing pain relief.

The device consists of a main unit and specialized applicators, designed to deliver precise and effective therapy. The main unit is equipped with an intuitive color touch screen that provides step-by-step guidance for the operator throughout the therapy process. The device features a preset treatment protocol for ease of use, while also allowing operators to customize parameters to meet specific therapeutic needs. Adjustable parameters include frequency (up to 150 Hz), therapy time (up to 30 minutes), and intensity (0-100%). The interface displays detailed information about the therapy settings and session progress (i.e., treatment duration). The device uses a temperature sensor to monitor the temperature of the coil to ensure that the maximum permissible temperature of the applicator's contact areas (i.e., 43°C) are not exceeded. It also has an intensity predictor function that limits the maximum adjustable intensity of the device based on the therapy parameters set, so as not to overheat and damage the device.

The device is equipped with three sets of applicators: AP-C-1, AP-C-2, and AP-C-4/5. Each applicator is intended for a different body area depending on the size and shape of the treated body part.

• Applicator AP-C-1 is intended for treatment of larger body areas, such as back, waist, thighs, etc.
• Applicator AP-C-2 is intended for treatment of smaller body areas, such as hands, arms, legs, etc.
• Applicators AP-C-4/5 (AP-C-4 and AP-C-5 - for each side of the body respectively) is primarily intended for treatment of waist and lower back.

The provided FDA 510(k) clearance letter and summary for the BTL-199 device does not include any clinical study data or describe acceptance criteria related to device performance in a clinical setting.

The submission is based on the device being "substantially equivalent" to predicate devices, which generally means that it has the same intended use and similar technological characteristics, and that any differences do not raise new questions of safety or effectiveness. For devices like the BTL-199, classified as Class II, substantial equivalence can often be demonstrated through non-clinical testing (bench testing, electrical safety, biocompatibility, etc.) and a comparison of technological characteristics with predicate devices that have already been cleared.

The "Clinical Testing" section explicitly states "Not applicable," which confirms that a clinical study proving device performance against specific acceptance criteria (like accuracy, sensitivity, or improvement in patient outcomes) was not required or submitted for this 510(k) clearance.

Therefore, I cannot fulfill the request to describe acceptance criteria and a study proving the device meets them based on the provided text, as such information is not present. The document focuses on demonstrating substantial equivalence for regulatory clearance, not on presenting performance data from a clinical trial.

If this were a device requiring clinical performance data (e.g., an AI-powered diagnostic device), the 510(k) summary would typically include a section detailing the clinical study, its methodology, and the results compared against pre-defined acceptance criteria. This is not the case for the BTL-199.

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