This product is indicated for use whenever the physician or healthcare professional administering or prescribing medical aerosol products to a patient with a Salter Labs nebulizer wishes to minimize the amount of medical aerosol exhaled into the air.

Device Description

The Salter Labs Aerosol Filter is designed to connect to the exhalation valve of the Salter Labs nebulizer mouthpiece. Since the exhalation valve of the Salter Labs Nebulizer product is designed with a non-standard diameter, the Salter Labs Nebulizer Exhalation Aerosol Filter is configured in such a way that it only fits the Salter Labs nebulizer product line: this device is not intended to be used with any other product. Product labeling clearly defines this product as an accessory to the Salter Labs nebulizer assembly.

The aerosol filter is a rectangular component that has been preformed to fit into an injection molded plastic housing. There are two design configurations: disposable and reusable. The reusable configuration allows the filter to be easily inserted and removed after each use. The filter is specified as a bacterial filter, although the intended use of the device is to remove aerosol particles, only. The surface area of the filter is ≥ 6.0 square inches, resulting in a specified resistance (exhalation force) of ≤ 2,0 cm Ho0 from the patient. Product design performance has been validated using product design specifications according to Salter Labs procedures and validation requirements.

There are two defined product configurations for this device: disposable and reusable.

AI/ML Overview

Here's an analysis of the provided text regarding the Salter Labs Nebulizer Aerosol Expiration Filter, focusing on the acceptance criteria and the study proving it.

1. Table of Acceptance Criteria and Reported Device Performance

Acceptance Criteria (Target)	Reported Device Performance (Achieved)
At least 95% effectiveness at aerosol removal	> 95% aerosol removal efficiency
Aerosol sizes monitored: 1 to 10 micron range	Average efficiency exceeding 99% for aerosols in the 1 to 10 micron range; Monitored aerosol sizes varied from 0.01 microns to 9.9 microns.
Resistance (exhalation force) of ≤ 2.0 cm H₂O	0.8 cm/H₂O (for both disposable and reusable configurations)

2. Sample Size Used for the Test Set and Data Provenance

The document does not specify a distinct "test set" in the context of a clinical study or a separate dataset used for final validation. The performance validation to design specification and aerosol removal testing were likely conducted as part of the product development and verification process.

Sample Size: Not explicitly stated. The statement "aerosol removal testing and validation" and "met all design requirements and passed all validation test requirements" suggests internal testing was performed, but no specific number of units tested is provided.
Data Provenance: The data appears to be from internal testing conducted by Salter Labs. There is no mention of country of origin of the data or whether it was retrospective or prospective in the sense of a multi-center study. It's best described as prospective internal laboratory or engineering testing.

3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts

This information is not provided. The study described is a performance validation and aerosol removal testing, not a study involving expert assessment of performance in a real-world scenario or against a "ground truth" established by human experts.

4. Adjudication Method for the Test Set

This is not applicable to the type of study described. "Adjudication" typically refers to the process of resolving discrepancies between human readers or experts, which is not relevant to instrumental aerosol filtration testing.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done

No, an MRMC comparative effectiveness study was not done. The described study evaluates the physical performance of the filter, not its impact on human reader performance or diagnostic accuracy.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done

Yes, a standalone performance evaluation was done. The study specifically assessed the aerosol removal efficiency and exhalation resistance of the filter itself, independent of human interaction or a human-in-the-loop system. The device is a passive filter, so its performance is inherently "standalone."

7. The Type of Ground Truth Used

The ground truth for the performance claim of aerosol removal was established through direct measurement of aerosol concentration before and after filtration using scientific instrumentation. Similarly, the ground truth for exhalation resistance was established through direct measurement of pressure difference across the filter. This can be considered physical measurement/instrumentation data against a defined standard or expected performance.

8. The Sample Size for the Training Set

This information is not applicable. The device is a physical filter, not an AI or machine learning algorithm that requires a "training set" in the computational sense. The "training" in this context would refer to material and engineering specifications and manufacturing processes.

9. How the Ground Truth for the Training Set Was Established

This information is not applicable for the reasons mentioned in point 8. The "ground truth" for manufacturing and design would be based on engineering specifications, material quality controls, and established manufacturing standards, but not a dataset as commonly understood in AI/ML.

Summary

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Salter Labs Nebulizer Aerosol Expiration Filter 510(k) Summary 9.2

In accordance with 21 CFR section 807.92 Salter Labs is submitting the following safety and effectiveness summary.

Submitter Information

Salter Labs 100 W. Sycamore Road Arvin, CA 93203 (805) 854-3166

Name of Device

Proprietary Name: Salter Labs Nebulizer Exhalation Aerosol Filter Common Name is Exhalation Filter Classification Name: Breathing Circuit Bacterial Filter

Substantially equivalent to Pari Exhalation Filter, K926455.
Device Description and System Overview:

There are two defined product configurations for this device: disposable and reusable.

1. Statement of Intended Use:
  The Salter Labs Nebulizer Exhalation Aerosol Filter is indicated for all circumstances where the reduction of medical aerosols during nebulizer use is required or The Salter Labs Nebulizer Exhalation Aerosol Filter comes in two recommended. configurations: a disposable device, which has a filter contained within a permanently sealed plastic case, and a reusable device designed to be used with Salter Labs nebulizer product. The Salter Labs Exhalation Aerosol Filter is intended to be used to reduce the amount of

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unused medical aerosols exhaled by the patient using the Salter Labs nebulizer system. The product specification calls for at least a 95% effectiveness at aerosol removal. No claims of bacterial filtration effectiveness are made or intended.

1. Comparative data concerning the Salter Labs Nebulizer Aerosol Filter and competitive products follows:
- a) Technological Characteristics and Comparison:

	Salter Labs:Disposable Filter	Salter Labs:Reusable Filter	Pari	Marquest	King Systems
Brand Name:	ExhalationAerosol Filter	ExhalationAerosol Filter	ExhalationFilter	Respirguard IIFilter	Virobac II Filter
Model #:	TBD	TBD	unknown	303	20800
Filter Type:	HydrophobicFilter	HydrophobicFilter	HydrophobicFilter	HydrophobicFilter	HydrophobicFilter
FilterManufacturer:	3M	3M	3M	3M	3M
Filter Material:	0.3 micronFiltrete Material	0.3 micronFiltreteMaterial	0.3 micronFiltreteMaterial	0.3 micron	0.3 micron
Total FilterArea:	≥ 6.0 sq. inches(rectangular)	≥ 6.0 sq.inches(rectangular)	approximately4 sq. inches(circular)	approximately4 sq. inches(circular)	approximately4 sq. inches(circular)
Single-Use/Reusable:	Disposable	Reusable(1 year)	Reusable(1 year)	Disposable	Disposable
Reuse Claims:	none	1 year	1 year	none	none
Sterile/Non-Sterile:	Non-Sterile	Non-Sterile	Non-Sterile	Non-Sterile	Non-Sterile
Intended Use:	Nebulizer	Nebulizer	Nebulizer	Nebulizer,humidifier, O₂Concentrator	Nebulizer,humidifier, O₂Concentrator
TargetPopulation:	Home Care &Hospital	Home Care &Hospital	Home Care &Hospital	Home Care &Hospital	Home Care &Hospital
AerosolFiltration?	Yes	Yes	Yes	Yes	Yes
BacterialFiltration?	No	No	Yes (but usedprimarily asaerosol filter)	Yes	Yes
ExhalationResistanceForce:	0.8 cm/H₂O**	0.8 cm/H₂O**	0.8 cm/H₂O(no valve)7.0 cm/H₂O(with valve)**	1.2 cm/H₂O	unknown
ConnectorSize:	.794" (non-standard Saltersized connector)	.794" (non-standard Saltersizedconnector)	22mm	22mm	22mm

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b) Brief Description of Non-Clinical Tests Identified in the Premarket Notification:
- performance validation to design specification 0
- 0 aerosol removal testing and validation
c) Clinical Tests submitted: None.
The Salter Labs Nebulizer Expiratory Aerosol Filter d) Conclusions of all Testing: (in both the disposable and reusable configurations) met all design requirements and passed all validation test requirements. It was shown to have a > 95% rate of aerosol removal efficiency, with aerosols in the 1 to 10 micron range, with an average efficiency rating exceeding 99%. Aerosol sizes monitored varied from .01 microns to 9.9 microns. Typical aerosol sizes generated during nebulization range from 1 micron to 5 microns.

Cleaning and Reuse:

Only the Reusable Aerosol Filter is intended for reuse. The Salter Labs Reusable Nebulizer Exhalation Aerosol Filter is designed to be cleaned prior to each use. Cleaning instructions are contained in product literature and include directions for washing, chemical cleaning and short term autoclaving. Since this device is incorporated in the exhalation path of the Salter Labs Nebulizer family, this device is provided and intended to be used in a non-sterile condition.

Product Warranty:

Standard product warranties apply to the disposable product. The reusable product is warranted for one year. All products are warranted to be free of defects at time of receipt.

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Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle or bird-like figure with three curved lines representing its body and wings. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the bird figure.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

DEC 17 1998

Mr. Duane Kazal Salter Labs Inc. 100 W. Sycamore Road Arvin, CA 93203

Re : K983403 Salter Labs Nebulizer Exhalation Aerosol Filter Regulatory Class: II (two) Product Code: 73 CAF Dated: September 15, 1998 September 28, 1998 Received:

Dear Mr. Kazal:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to leqally 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). 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 (Premarket Approval), it may be subject to such Existing major regulations affecting your device additional controls. can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General requlation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP requlation may result in requlatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.

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Page 2 - Mr. Duane Kazal

This letter will allow you to begin marketing your device as described in your 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 requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".

Sincerely yours,

Thomas J. Callahon

Thomas J. Callahan, Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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K983403 510(k) Number: Unknown -C

Device Name: Salter Labs Nebulizer Exhalation Aerosol Filter.

Indications For Use:

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED.)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Usen ﺖ (Per 21 CFR 801.109)

Over-The Counter-Use (Optional Format 1-2-96)

Zank Medoo 12-16-98

(Division Sign-Off) Division of Cardiovascular, Respiratory, and Neurological Devices

510(k) Number ...

Regulation Number and Section

§ 868.5630 Nebulizer.

(a)
Identification. A nebulizer is a device intended to spray liquids in aerosol form into gases that are delivered directly to the patient for breathing. Heated, ultrasonic, gas, venturi, and refillable nebulizers are included in this generic type of device.(b)
Classification. Class II (performance standards).