LiteAire Basic Dual-Valved, Collapsible MDI Holding Chamber
Device Facts
| Record ID | K210558 |
|---|---|
| Device Name | LiteAire Basic Dual-Valved, Collapsible MDI Holding Chamber |
| Applicant | Thayer Medical Corporation |
| Product Code | NVP · Anesthesiology |
| Decision Date | Apr 1, 2022 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 868.5630 |
| Device Class | Class 2 |
| Attributes | Therapeutic, Pediatric |
Intended Use
The LiteAire® BASIC and the modified LiteAire® are collapsible, disposable dual-valved holding chambers designed to aid in the delivery of aerosolized medications delivered via a pressurized metered dose inhaler (MDI). The LiteAire® BASIC and the modified LiteAire® feature a standard port designed for compatibility with standard MDI mouthpieces. They are non-sterile devices for single-patient use. The LiteAire® BASIC and the modified LiteAire® are intended to be used by adults, adolescents and children ages 5 and up who are able to use a holding chamber without the aid of a mask and who are under the care or treatment of a physician or licensed healthcare professional.
Device Story
Collapsible, disposable, dual-valved holding chamber; aids delivery of aerosolized medications from pMDI. User inserts MDI into port; manually depresses MDI to dispense aerosol into reservoir; inhales through mouthpiece. One-way inhalation valve directs medication to respiratory tract; one-way exhalation valve allows exhalation through device while maintaining mouthpiece contact. Used in home, hospital, or clinic; operated by patient. Benefits include improved medication dosing by preventing poor inhalation technique. Device is anti-static; collapsible paperboard housing; single-patient use; reusable for up to one week.
Clinical Evidence
Bench testing only. Aerosol characterization performed using Andersen Cascade Impactor (ACI) at adult (28.3 L/min) and pediatric (12.0 L/min) flow rates. Compared Total Emitted Dose, Coarse/Fine Particle Dose, MMAD, and GSD for three MDI medications (Albuterol Sulfate, Ipratropium Bromide, Fluticasone Propionate) against predicate. Results demonstrate performance equivalence. Biocompatibility confirmed per ISO 10993-1.
Technological Characteristics
Collapsible paperboard housing; anti-static; 184 mL volume. Components: paperboard, vegetable-based inks, aqueous coating, acrylic adhesive, PET, polypropylene. Dual one-way valves (inhalation/exhalation). Non-sterile; single-patient use; 1-week use-life. Universal MDI port. No electronic or software components.
Indications for Use
Indicated for adults, adolescents, and children ages 5 and up capable of using a holding chamber without a mask; intended to aid delivery of aerosolized medications from a pressurized metered dose inhaler (pMDI).
Regulatory Classification
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.
Predicate Devices
- Thayer Medical LiteAire® Dual-Valved, Collapsible MDI Holding Chamber (K160109)
Related Devices
- K160109 — Thayer Medical LiteAire Dual-valved, Collapsible MDI Holding Chamber · Thayer Medical Corporation · May 19, 2017
- K140062 — FSC ANTI-STATIC VALVED COLLAPSIBLE HOLDING CHAMBER · Fsc Laboratories, Inc. · Oct 3, 2014
- K072418 — OPTICHAMBER ADVANTAGE ANTI-STATIC VALVED HOLDING CHAMBER · Respironics New Jersey, Inc. · Sep 12, 2007
- K101136 — FISIO CHAMBER SPACE · Koo (Shanghai) Industries Co., Ltd. · Jan 28, 2011
- K130598 — INSPIRACHAMBER ANTI-STATIC VALVED HOLDING CHAMBER · Inspirx, Inc. · Jun 5, 2013
Submission Summary (Full Text)
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo in blue, with the words "U.S. FOOD & DRUG ADMINISTRATION" in blue as well. The FDA is a federal agency responsible for regulating and supervising the safety of food, drugs, and other products.
### 03/31/2022
Thayer Medical Corporation Christine Woeppel Quality Engineer 4575 S. Palo Verde Road, Suite 337 Tucson, Arizona 85714
Re: K210558
Trade/Device Name: LiteAire Basic Dual-Valved, Collapsible MDI Holding Chamber Regulation Number: 21 CFR 868.5630 Regulation Name: Nebulizer Regulatory Class: Class II Product Code: NVP Dated: February 25, 2022 Received: March 4, 2022
Dear Christine Woeppel:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. 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.
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
{1}------------------------------------------------
requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Brandon Blakely Assistant Director DHT1C: Division of Sleep Disordered Breathing, Respiratory and Anesthesia Devices OHT1: Office of Ophthalmic, Anesthesia, Respiratory, ENT and Dental Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
## Indications for Use
510(k) Number (if known) K210558
### Device Name
LiteAire BASIC Dual Valved, Collapsible MDI Holding Chamber LiteAire Dual Valved, Collapsible MDI Holding Chamber
Indications for Use (Describe)
The LiteAire is a collapsible, disposable dual-valved holding chamber designed to aid in the delivery of aerosolized medications delivered via a pressurized metered dose inhaler (MDI).
The LiteAire features a standard port designed for compatibility with standard MDI mouthpieces. It is a non-sterile device for single-patient use.
The LiteAire is intended to be used by adults, adolescents and children ages 5 and up who are able to use a holding chamber without the aid of a mask and who are under the care or treatment of a physician or licensed healtheare professional.
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------|--|
|-------------------------------------------------|--|
X Prescription Use (Part 21 CFR 801 Subpart D)
| Over-The-Counter Use (21 CFR 801 Subpart C)
### CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
Image /page/3/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of a square with a series of dots above it, arranged in a pattern that resembles a cloud or spray. Below the square, the words "THAYER MEDICAL" are printed in a bold, sans-serif font, with "THAYER" on top of "MEDICAL".
Page 1 of 6
# 510(k) Summary
### PREMARKET NOTIFICATION 510(K) SUMMARY
### [As required by 21 CFR 807.92]
| Table 1. GENERAL INFORMATION | |
|----------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Name of Submitter | Thayer Medical Corporation |
| Address | 4575 S Palo Verde Rd., Suite 337<br>Tucson, AZ 85714 |
| Phone Number | (520) 790-5393 |
| Contact Person | James Strickland, CEO<br>(520) 790-5393 |
| Date of Preparation | 31 March 2022 |
| Name of Modified Subject Devices | Thayer Medical LiteAire® BASIC Dual-Valved, Collapsible MDI Holding Chamber (K210558)<br>Product Code: NVP<br>Product Class: Class II<br>Class Name: Holding Chambers, Direct Patient Interface<br>Thayer Medical LiteAire® Dual-Valved, Collapsible MDI Holding Chamber (K210558)<br>Product Code: NVP<br>Product Class: Class II<br>Class Name: Holding Chambers, Direct Patient Interface |
| Name of the Predicate Device | Thayer Medical LiteAire® Dual-Valved, Collapsible MDI Holding Chamber (K160109) |
#### Device Description 1.1
The LiteAire® BASIC Dual Valved, Collapsible MDI Holding Chamber (also referred to as the LiteAire® BASIC) and the modified LiteAire® Dual Valved, Collapsible MDI Holding Chamber (also referred to as the modified LiteAire®), are intended for use in the inhalation of medications delivered via a pressurized metered dose inhaler (pMDI). The subject devices feature a universal port designed for compatibility with most MDI medications. The subject devices are intended for use by a single patient and, when properly cared for, are reusable for up to one week. The devices consist of a collapsible paperboard housing and two one-way valves to control the direction of air flow when the patient inhales and exhales through the devices are popped-up by the user prior to use by pressing against the sides of the devices, can be collapsed flat between uses, and are anti-static. The intended environments of use include the home, hospitals and clinics. Note that the only differences between the modified LiteAire® and LiteAire® BASIC configurations is the removal of the window.
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of a square shape with a pattern of dots arranged in rows, with the dots becoming larger towards the center. Below the square is the text "THAYER MEDICAL" in a bold, sans-serif font, with the word "THAYER" stacked above the word "MEDICAL". A horizontal line is placed below the text.
Page 2 of 6 Traditional Bundled 510(k): Device Modification Thayer Medical Corporation Rev D LiteAire® & LiteAire® BASIC Dual Valved, Collapsible MDI Holding Chamber
2022-03-31
#### Principle of Operation 1.2
The subject devices are comprised of a reservoir into which an aerosol medication is dispensed and a mouthpiece from which the patient inhales the dispensed medication. The reservoir and mouthpiece are separated by a one-way valve. The user inserts an MDI into the MDI Port, and then places their mouth over the mouthpiece of the holding chamber. As the user manually depresses the MDI, the aerosol plume is directed into the holding chamber of the device. Upon inhalation, the smaller aerosolized medication particles travel through the device's inhalation valve and into the patient's respiratory tract. The subject devices also incorporate a one-way exhalation valve that allows the patient to breathe out through the device while maintaining contact with the mouthpiece. This prevents poor medication dosing as the inhalation valve seals the chamber and exhausted air is instead routed through the exhalation valve and out of the device.
#### 1.3 Intended Use
The LiteAire® BASIC and the modified LiteAire® are collapsible, disposable dual-valved holding chambers designed to aid in the delivery of aerosolized medications delivered via a pressurized metered dose inhaler (MDI). The LiteAire® BASIC and the modified LiteAire® feature a standard port designed for compatibility with standard MDI mouthpieces. They are non-sterile devices for single-patient use. The LiteAire® BASIC and the modified LiteAire® are intended to be used by adults, adolescents and children ages 5 and up who are able to use a holding chamber without the aid of a mask and who are under the care or treatment of a physician or licensed healthcare professional.
The indications for use and intended use of the subject devices are identical to the predicate.
#### 1.4 Comparison to the Predicate Device
The subject devices are substantially equivalent to the predicate device (K160109) in purpose, function, scientific technology and method of operation. Only minor differences exist between the subject devices and the predicate, which do not affect the safety or effectiveness of the subject devices.
| Table 2. DEVICE COMPARISON: LiteAire® Modifications | | | |
|-----------------------------------------------------|--------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | Cleared Predicate Device:<br> | Changes from Predicate to Subject | |
| Attribute | LiteAire® (K160109) | Modified Subject Device:<br>LiteAire® BASIC | Modified Subject Device:<br>LiteAire® |
| Component<br>Design Features | Paperboard Housing | YES: The exterior dimensions<br>and shape of the paperboard<br>housing are unchanged.<br>However, three slight<br>modifications were made (1) | YES: The exterior dimensions<br>and shape of the paperboard<br>housing are unchanged.<br>However, two slight<br>modifications were made (1) |
| | | the top panel of the inner<br>barrier was expanded, (2) the<br>inhalation vent was changed<br>from an elongated rectangle to<br>a series of four circles, and (3)<br>the window opening was<br>eliminated. | the top panel of the inner<br>barrier was expanded, and (2)<br>the inhalation vent was<br>changed from an elongated<br>rectangle to a series of four<br>circles. |
| | One-way exhalation valve | | No Change |
| | One-way inhalation valve | No Change | |
| | Polymer Window | YES: No Window | No Change |
| | Location and pattern of<br>Adhesive is limited to and<br>controlled within general<br>areas. | YES: Location and pattern of Adhesive is still limited to and<br>controlled within the same general areas; however, the<br>application/deliberate placement is more precisely controlled<br>within those areas. | No Change |
| | Graphic Design | YES: The graphics displayed on the outside of the subject devices<br>are different than those of the predicate | |
| Assembly Method | Pop-up | No Change | |
| Housing<br>Configuration | Collapsible | No Change | |
| Patient Interface | Mouthpiece between lips | No Change | |
| | Fingers pinch sides | No Change | |
| Chamber Volume | 184 mL | No Change | |
| Anti-Static<br>Properties | Anti-Static | No Change | |
| Shelf-life | 5 years | No Change | |
| Use-life | Device can be used for up<br>to 1 week before disposal | No Change | |
| Cleaning | Device cannot be washed | No Change | |
| Sterility | Non-sterile | No Change | |
| Materials | Paperboard, Vegetable-<br>based Inks, Aqueous<br>Coating, Acrylic Adhesive,<br>PET and Polypropylene<br>Components | No Change | |
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of the words "THAYER MEDICAL" in a bold, sans-serif font, with "THAYER" stacked on top of "MEDICAL". Above the words is a stylized graphic of a series of dots arranged in a semi-circular pattern, with the dots increasing in size from top to bottom. The logo is simple and modern, and the use of dots suggests a connection to technology or innovation.
Rev D 2022-03-31
#### Non-Clinical Testing Summary 1.5
# 1.5.1. Aerosol Characterization
Aerosol characterization testing was performed in accordance with relevant sections of the CDRH Guidance Document "Reviewer Guidance for Nebulizers, Metered Dose Inhalers, Spacers and Actuators" (1993). Testing involved aerosol characterization of particle size distributions of three different MDI medications compared against the predicate device using an Andersen Cascade
{6}------------------------------------------------
Image /page/6/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of the words "THAYER MEDICAL" in a bold, sans-serif font, with "THAYER" stacked above "MEDICAL". Above the text is a black square with a pattern of white circles inside, resembling a stylized atom or molecule. Above the square, there are several rows of black dots, decreasing in number as they move upwards, creating a visual effect of dispersion or radiation.
Rev D 2022-03-31
Impactor (ACI). Tables 3 and 4 include a summary of the testing performed at adult flow rates (28.3 L/min) and pediatric flow rates (12.0 L/min).
| | | Predicate LiteAire<br>(N=9) | LiteAire BASIC<br>(N=9) | Modified<br>LiteAire (N=9) |
|-------------------------------------------------|-------------------------------------------|-----------------------------|-----------------------------|------------------------------|
| Drug | Parameter | | | |
| AbS: Albuterol<br>Sulfate<br>(Proventil HFA) | Total Emitted Dose (µg) ± SD,<br>95% CI | 56.06 ± 6.94<br>50.73–61.40 | 54.75 ± 4.96<br>50.94–58.45 | 53.85 ± 2.66<br>51.81–55.90 |
| | Coarse Particle Dose (µg) ± SD,<br>95% CI | BLOQ*<br>BLOQ* | 0.09 ± 0.26<br>-0.11–0.29 | 0.16 ± 0.31<br>-0.08–0.40 |
| | Fine Particle Dose (µg) ± SD, 95% CI | 56.06 ± 6.94<br>50.73–61.40 | 54.66 ± 4.99<br>50.83–58.50 | 53.85 ± 2.57<br>51.72–55.67 |
| | MMAD (µm) ± SD,<br>95% CI | 2.15 ± 0.05<br>2.12–2.19 | 2.17 ± 0.05<br>2.14–2.21 | 2.24 ± 0.06<br>2.19–2.28 |
| | GSD (µm) ± SD,<br>95% CI | 1.44 ± 0.07<br>1.39–1.49 | 1.43 ± 0.08<br>1.37–1.49 | 1.41 ± 0.02<br>1.39–1.43 |
| IpB: Ipratropium<br>Bromide,<br>(Atrovent HFA) | Total Emitted Dose (µg) ± SD,<br>95% CI | 7.39 ± 0.55<br>6.96–7.81 | 7.46 ± 0.61<br>6.99–7.92 | 7.71 ± 0.62<br>7.10–8.25 |
| | Coarse Particle Dose (µg) ± SD,<br>95% CI | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* |
| | Fine Particle Dose (µg) ± SD,<br>95% CI | 7.39 ± 0.55<br>6.96–7.81 | 7.46 ± 0.61<br>6.99–7.92 | 7.71 ± 0.62<br>7.10–8.25 |
| | MMAD (µm) ± SD,<br>95% CI | 0.51 ± 0.06<br>0.46–0.55 | 0.57 ± 0.14<br>0.46–0.67 | 0.60 ± 0.09<br>0.53–0.66 |
| | GSD (µm) ± SD,<br>95% CI | 4.79 ± 0.70<br>4.26–5.33 | 3.90 ± 1.81<br>2.51–5.29 | 3.44 ± 0.95<br>2.71–4.17 |
| Flu: Fluticasone<br>Propionate<br>(Flovent HFA) | Total Emitted Dose (µg) ± SD,<br>95% CI | 40.96 ± 5.23<br>36.94–44.98 | 41.27 ± 6.33<br>36.41–46.14 | 38.43 ± 11.26<br>28.72–44.55 |
| | Coarse Particle Dose (µg) ± SD,<br>95% CI | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* |
| | Fine Particle Dose (µg) ± SD,<br>95% CI | 40.96 ± 5.23<br>36.94–44.98 | 41.27 ± 6.33<br>36.41–46.14 | 38.43 ± 11.26<br>29.78–47.09 |
| | MMAD (µm) ± SD,<br>95% CI | 2.49 ± 0.17<br>2.358–2.619 | 2.52 ± 0.03<br>2.50–2.54 | 2.54 ± 0.06<br>2.50–2.59 |
| | GSD (µm) ± SD,<br>95% CI | 1.39 ± 0.02<br>1.38–1.41 | 1.41 ± 0.03<br>1.39–1.43 | 1.46 ± 0.05<br>1.426–1.499 |
* Below Limit of Quantitation (BLOQ)
TABLE 4: Particle size distribution characterization of the predicate and subject devices at pediatric simulated inhalation rate (12.0 L/min).
| Drug | Parameter | Predicate LiteAire<br>(N=9) | LiteAire BASIC<br>(N=9) | Modified<br>LiteAire (N=9) |
|----------------------------------------------|---------------------------------------|-----------------------------|-------------------------|----------------------------|
| AbS: Albuterol<br>Sulfate<br>(Proventil HFA) | Total Emitted Dose ( $\mu$ g) ± SD, | 56.06 ± 6.94 | 54.75 ± 4.96 | 53.85 ± 2.66 |
| | 95% CI | 50.73 – 61.40 | 50.94 – 58.45 | 51.81 – 55.90 |
| | Coarse Particle Dose ( $\mu$ g) ± SD, | BLOQ* | 0.09 ± 0.26 | 0.16 ± 0.31 |
| | 95% CI | BLOQ* | -0.11 – 0.29 | -0.08 – 0.40 |
{7}------------------------------------------------
Image /page/7/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of the words "THAYER MEDICAL" stacked on top of each other in a bold, sans-serif font. Above the words is a graphic of a square shape made up of several small circles. The circles are arranged in a pattern that resembles a cloud or a burst of energy.
| Rev D |
|------------|
| 2022-03-31 |
| | Fine Particle Dose (µg) ± SD, 95%<br>CI | 56.06 ± 6.94<br>50.73 - 61.40 | 54.66 ± 4.99<br>50.83 - 58.50 | 53.85 ± 2.57<br>51.72 - 55.67 |
|------------------------------------------------|-------------------------------------------------|-------------------------------------------|-------------------------------|-------------------------------|
| | MMAD (μm) ± SD,<br>95% CI | 2.15 ± 0.05<br>2.12 - 2.19 | 2.17 ± 0.05<br>2.14 - 2.21 | 2.24 ± 0.06<br>2.19 - 2.28 |
| | GSD (μm) ± SD,<br>95% CI | 1.44 ± 0.07<br>1.39 - 1.49 | 1.43 ± 0.08<br>1.37 - 1.49 | 1.41 ± 0.02<br>1.39 - 1.43 |
| IpB: Ipratropium<br>Bromide,<br>(Atrovent HFA) | Total Emitted Dose (µg) ± SD,<br>95% CI | 7.39 ± 0.55<br>6.96 - 7.81 | 7.46 ± 0.61<br>6.99 - 7.92 | 7.71 ± 0.62<br>7.10 - 8.25 |
| | Coarse Particle Dose (μg) ± SD,<br>95% CI | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* |
| | Fine Particle Dose (μg) ± SD,<br>95% CI | 7.39 ± 0.55<br>6.96 - 7.81 | 7.46 ± 0.61<br>6.99 - 7.92 | 7.71 ± 0.62<br>7.10 - 8.25 |
| | MMAD (μm) ± SD,<br>95% CI | 0.51 ± 0.06<br>0.46 - 0.55 | 0.57 ± 0.14<br>0.46 - 0.67 | 0.60 ± 0.09<br>0.53 - 0.66 |
| | GSD (μm) ± SD,<br>95% CI | 4.79 ± 0.70<br>4.26 - 5.33 | 3.90 ± 1.81<br>2.51 - 5.29 | 3.44 ± 0.95<br>2.71 - 4.17 |
| | Flu: Fluticasone<br>Propionate<br>(Flovent HFA) | Total Emitted Dose (μg) ± SD,<br>95% CI | 40.96 ± 5.23<br>36.94 - 44.98 | 41.27 ± 6.33<br>36.41 - 46.14 |
| | | Coarse Particle Dose (μg) ± SD,<br>95% CI | BLOQ*<br>BLOQ* | BLOQ*<br>BLOQ* |
| | | Fine Particle Dose (μg) ± SD,<br>95% CI | 40.96 ± 5.23<br>36.94 - 44.98 | 41.27 ± 6.33<br>36.41 - 46.14 |
| | | MMAD (μm) ± SD,<br>95% CI | 2.49 ± 0.17<br>2.358 - 2.619 | 2.52 ± 0.03<br>2.50 - 2.54 |
| | | GSD (μm) ± SD,<br>95% CI | 1.39 ± 0.02<br>1.38 - 1.41 | 1.41 ± 0.03<br>1.39 - 1.43 |
* Below Limit of Quantitation (BLOQ)
# 1.5.2. Biocompatibility Testing
The predicate device (K160109) was found to be biocompatible per ISO 10993-1. Other than the removal of the window on the LiteAire® Basic, there are no differences in the materials used to create the modified (subject) devices. Biocompatibility was confirmed utilizing the FDA guidance document, Use of International Standard ISO-10993-1, "Biological Evaluation of Medical Devices – Part 1: Evaluation and Testing within a Risk Management Process". The subject devices are made with the same material formulations, manufacturing processes (including sterility), finished device geometry (including chamber volumes), and body/fluid contact characterization as the predicate device (K160109). The modifications of the subject devices from the predicate device do not result in changes to any direct or indirect tissue-contacting components. Additionally, the proposed changes to the subject devices did not add any new biocompatibility risks to the risk management process. Therefore, the biocompatibility requirements of the subject devices have been met.
## 1.5.3. Bench Performance Testing
The following performance tests were completed on the subject devices. All tests passed.
- Visual Inspection ●
{8}------------------------------------------------
Image /page/8/Picture/0 description: The image shows the logo for Thayer Medical. The logo consists of the words "THAYER MEDICAL" in a bold, sans-serif font, with "THAYER" stacked above "MEDICAL". Above the text is a graphic of a square filled with circles, with the circles decreasing in size towards the top of the square. The logo is simple and professional, and the graphic is likely meant to represent the company's focus on health and medicine.
Rev D 2022-03-31
Page 6 of 6
- First Article Inspection
- Accelerated Aging
- Pop/Collapse
## 1.5.4. Clinical Testing
Not applicable.
#### 1.6 Substantial Equivalence Conclusion
We have demonstrated that the modification in design of the subject devices does not negatively impact the device performance and the modified (subject) devices continues to perform with substantial equivalence to the cleared (predicate) device.
