Triever16 Curve

K223419 · Inari Medical · QEW · Mar 23, 2023 · Cardiovascular

Device Facts

• Record ID: K223419
• Device Name: Triever16 Curve
• Applicant: Inari Medical
• Product Code: QEW · Cardiovascular
• Decision Date: Mar 23, 2023
• Decision: SESE
• Submission Type: Special
• Regulation: 21 CFR 870.5150
• Device Class: Class 2
• Attributes: Therapeutic

Indications for Use

The Triever16 Curve is indicated for: • The non-surgical removal of emboli and thrombi from blood vessels. • Injection, infusion, and/or aspiration of contrast media and other fluids into or from a blood vessel. The Triever16 Curve is intended for use in the peripheral vasculature and for the treatment of pulmonary embolism. The Triever16 Curve is not indicated for use with FlowTriever Catheters. The Triever16 Curve is also intended for use in treating clot in transit in the right atrium but not in conjunction with FlowTriever Catheters.

Device Story

Triever16 Curve is a single-use, over-the-wire aspiration catheter for minimally invasive thromboemboli removal. Input: manual aspiration via 60 cc vacuum syringe. Operation: catheter advanced over 0.035" guidewire to thrombus site; vacuum applied to aspirate clot. Used in peripheral vasculature, pulmonary arteries, and right atrium. Operated by physicians in clinical settings. Output: removed thrombus/emboli. Benefits: non-surgical clot removal, reduced clot burden. Device is a variant of the Triever20 Curve; differences in dimensions and materials verified via bench testing.

Clinical Evidence

No clinical data. Substantial equivalence supported by bench testing, including visual/dimensional inspection, guidewire compatibility, insertion/retraction force, rotation, recovery angle, kink radius, vacuum testing, flow rate, and clot burden removal validation.

Technological Characteristics

16 Fr (5.3 mm OD / 4.5 mm ID) catheter, 110 cm length. Materials: Pebax 55D/35D/63D, braided polyester/polyblend. 110° tip angle. Guidewire: 0.035". Sterilization: EtO (ISO 11135:2014/Amd 1:2018, AAMI TIR 28:2016). Biocompatibility: ISO 10993-1 compliant.

Indications for Use

Indicated for non-surgical removal of emboli/thrombi from blood vessels and fluid management (injection/infusion/aspiration) in peripheral vasculature, pulmonary arteries, and right heart. Contraindicated for vessels < 6 mm and use with FlowTriever catheters.

Regulatory Classification

Identification

An embolectomy catheter is a balloon-tipped catheter that is used to remove thromboemboli, i.e., blood clots which have migrated in blood vessels from one site in the vascular tree to another.

Predicate Devices

• Inari FlowTriever Retrieval/Aspiration System (K213402)

Reference Devices

• Penumbra Indigo System Aspiration Catheter 12 (K192981)

Submission Summary (Full Text)

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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 seal of the Department of Health & Human Services. To the right of that is the FDA logo in blue, with the words "U.S. FOOD & DRUG" stacked on top of the word "ADMINISTRATION".

March 23, 2023

Inari Medical Ellen Nguyen Regulatory Affairs Specialist 6001 Oak Canyon, Suite 100 Irvine, California 92618

## Re: K223419

Trade/Device Name: Triever16 Curve Regulation Number: 21 CFR 870.5150 Regulation Name: Embolectomy Catheter Regulatory Class: Class II Product Code: QEW, KRA Dated: February 23, 2023 Received: February 24, 2023

## Dear Ellen Nguyen:

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 requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part

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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 (QS) 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 medical devices and radiation-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 ([e-mail]) or phone [phone] or 301-796-7100).

Sincerelv.

Gregory W. Digitally signed by Gregory W. O'connell -S O'connell -S Date: 2023.03.23
09:30:19 -04-00'

Gregory O'Connell Assistant Director DHT2C: Division of Coronary and Peripheral Intervention Devices OHT2: Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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# Indications for Use

510(k) Number (if known) K223419

Device Name Triever16 Curve

Indications for Use (Describe) The Triever16 Curve is indicated for:

· The non-surgical removal of emboli and thrombi from blood vessels.

· Injection, infusion, and/or aspiration of contrast media and other fluids into or from a blood vessel.

The Triever 16 Curve is intended for use in the peripheral vasculature and for the treatment of pulmonary embolism.

The Triever16 Curve is not indicated for use with FlowTriever Catheters.

The Triever16 Curve is also intended for use in transit in the right atrium but not in conjunction with FlowTriever Catheters.

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)

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K223419

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# 510(K) SUMMARY

| Date prepared | March 22, 2023 |
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Name | Inari Medical, Inc.<br>6001 Oak Canyon, Suite 100<br>Irvine, CA 92618<br>877.923.4747 |
| Contact person | Ellen Nguyen<br>Regulatory Affairs Specialist |
| Name of Device | Triever16 Curve |
| Common name | Embolectomy catheter |
| Regulation name | Embolectomy catheter |
| Classification number | 21 CFR 870.5150 |
| Product code | QEW |
| Secondary product code | KRA |
| Regulatory class | II |
| Predicate device | Inari FlowTriever Retrieval/Aspiration System (K213402) |
| References devices | Penumbra Indigo System Aspiration Catheter 12 (K192981) |
| Description | The Triever16 (“T16”) Curve is a single-use, over-the-wire catheter used for the<br>minimally invasive treatment of thromboemboli in the peripheral vasculature, the<br>treatment of pulmonary embolism, and the treatment of clot in transit in the right<br>atrium.<br><br>The T16 Curve is inserted over a pre-placed 0.035" guidewire, either standalone (i.e.,<br>through an introducer sheath without another catheter) or through a compatible Inari<br>device such as the Triever20/24, Intri24 Sheath, 16 Fr ClotTriever Sheath, or<br>Protrieve Sheath (packaged separately), and advanced to the thrombus. Thrombus is<br>removed by aspiration with the provided 60 cc Large Bore Vacuum syringe. After<br>the procedure is complete, the T16 Curve is removed from the patient. |
| Indications for Use | The Triever16 Curve is indicated for:<br>• The non-surgical removal of emboli and thrombi from blood vessels.<br>• Injection, infusion, and/or aspiration of contrast media and other fluids into<br>or from a blood vessel.<br><br>The Triever16 Curve is intended for use in the peripheral vasculature and for the<br>treatment of pulmonary embolism.<br>The Triever16 Curve is not indicated for use with FlowTriever Catheters.<br>The Triever16 Curve is also intended for use in treating clot in transit in the right<br>atrium but not in conjunction with FlowTriever Catheters. |

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These modifications introduce the Triever16 Curve, a T20 Curve variant used for aspiration thrombectomy in the peripheral vasculature, pulmonary arteries, and right heart.

Comparison of Technological Characteristics with the Predicate Device The proposed modifications do not change the intended use or principles of operation from the predicate device. The modified and predicate device have a similar design and mainly differ in dimensions and materials.

The Triever16 Curve and Triever20 Curve are both tracked over a pre-placed compatible guidewire. The Triever16 Curve performs thrombectomy using aspiration, following the same method as the predicate Triever20 Curve.

Although the predicate and subject devices have different technological characteristics. all leveraged and performed design verification and validation tests confirm that these differences do not raise any new or different questions of safety or effectiveness.

There have been no changes to the 16/20/24 Fr Triever Catheters or FlowTriever Catheters.

Summary of There is no change of intended use or fundamental scientific technology between the substantial equivalence proposed device and predicate device. Aside from the Triever20 Curve's requirement to be used through the Triever24, the Triever16 Curve has the same indications for use as the predicate device. K213402: both are indicated for the non-surgical removal of emboli and thrombi from blood vessels and the injection, infusion, and/or aspiration of contrast media and other fluids into or from a blood vessel. Both are intended for use in the peripheral vasculature, for the treatment of pulmonary embolism, and for use in treating clot in transit in the right atrium but not in conjunction with FlowTriever Catheters.

> A tabular comparison of specific technological characteristics between the predicate and subject device is provided below:

| Feature | Triever16 Curve<br>Proposed (TBD) | Triever20 Curve<br>Predicate (K213402) | |
|----------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|
| Manufacturer | Inari Medical | Inari Medical | |
| Product code | QEW | QEW | |
| Intended<br>use/Indications<br>for use | The Triever16 Curve is<br>indicated for: | The Triever20 Curve is used<br>coaxially within the Triever24<br>for: | |
| | • The non-surgical removal<br>of emboli and thrombi<br>from blood vessels. | • The non-surgical removal<br>of emboli and thrombi<br>from blood vessels. | |
| | • Injection, infusion, and/or<br>aspiration of contrast<br>media and other fluids into<br>or from a blood vessel. | • Injection, infusion, and/or<br>aspiration of contrast<br>media and other fluids into<br>or from a blood vessel. | |
| | The Triever16 Curve is intended<br>for use in the peripheral<br>vasculature and for the treatment<br>of pulmonary embolism. | The Triever20 Curve is<br>intended for use in the<br>peripheral vasculature and for<br>the treatment of pulmonary | |
| Feature | Triever16 Curve | Triever20 Curve | |
| | Proposed (TBD) | Predicate (K213402) | |
| | The Triever16 Curve is not<br>indicated for use with | embolism. | |
| | FlowTriever Catheters.<br>The Triever16 Curve is also | The Triever20 Curve is not<br>indicated for use with<br>FlowTriever Catheters. | |
| | intended for use in treating clot<br>in transit in the right atrium but<br>not in conjunction with<br>FlowTriever Catheters. | The Triever20 Curve is also<br>intended for use in treating clot<br>in transit in the right atrium but<br>not in conjunction with<br>FlowTriever Catheters. | |
| Principles of<br>operation | The Triever16 Curve is inserted<br>into the vessel standalone or<br>through a compatible Inari<br>device over a pre-placed<br>guidewire and is advanced until<br>its tip is proximal to the target<br>thrombus. A 60 cc syringe is<br>provided for the aspiration of<br>clot into the catheter and the<br>infusion of contrast media and<br>other fluids. | The Triever20 Curve is inserted<br>into the vessel through the<br>Triever24 over a pre-placed<br>guidewire and is advanced until<br>its tip is proximal to the target<br>thrombus. A 60 cc syringe is<br>provided for the aspiration of<br>clot into the catheter and the<br>infusion of contrast media and<br>other fluids. | |
| Target vessel | Peripheral vessels ≥ 6 mm,<br>pulmonary arteries, right heart,<br>IVC | Peripheral vessels ≥ 8 mm,<br>pulmonary arteries, right heart,<br>IVC | |
| Contraindicated<br>vessels | < 6 mm | < 8 mm | |
| Guidewire<br>compatibility | 0.035" | 0.035" | |
| Shelf-life | 2 years | 2 years | |
| Sterilization | EtO | EtO | |
| Single-use | Yes | Yes | |
| | Catheter | | |
| Dimensions | OD/ID: 16 Fr (5.3 mm)/4.5 mm<br>Length: 110 cm | OD/ID: 20 Fr (6.8 mm)/5.6 mm<br>Length: 102 cm | |
| Shaft material | Distal: Pebax 55D with ProPell<br>Transition: Pebax 35D and 55D<br>with ProPell<br>Proximal: Pebax 63D | Distal: Pebax 35D<br>Transition: Pebax 55D<br>Proximal: Pebax 72D | |
| Metal support | Braid: 110.7 cm<br>Coil: 45.7 cm | Braid: 101.6 cm<br>Coil: 40.64 cm | |
| Hemostasis valve | Septum: Polyblend/adhesive<br>Monofilament: Braided<br>polyester | Septum: Braid/silicone<br>Monofilament: Nylon | |
| Tip angle | 110° | 225° | |
| Feature | Triever16 Curve<br>Proposed (TBD) | Triever20 Curve<br>Predicate (K213402) | |
| Dilator | | | |
| Length | 118.9 cm | 113.3 cm | |
| Materials | Pebax 55D with ProPell | LDPE/HDPE | |
| Handle | Overmolded locking hub | Luer connection | |

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### Biocompatibility

.

The following biocompatibility tests were completed for the subject device:

- . Cytotoxicity
- . Sensitization
- Intracutaneous Reactivity
- Acute Systemic Toxicity ●
- . Material-Mediated Pyrogenicity
- Hemocompatibility (Hemolysis, Complement Activation, Thromboresistance, Platelet and Leukocyte Count, and Partial Thromboplastin Time)

The passing results demonstrate that the subject device and accessories meet biological safety requirements per ISO 10993-1.

### Sterilization

The subject device, including its accessories, is sterilized using EtO to achieve a sterility assurance level (SAL) of 106. The subject device has been adopted into a validated sterilization process in accordance with the principles of ISO 11135:2014/Amd 1:2018 (Sterilization of health-care products - Ethylene oxide -Requirements for the development, validation and routine control of a sterilization process for medical devices - Amendment 1: Revision of Annex E, Single batch release) and AAMI TIR 28:2016 (Product adoption and process equivalence for ethylene oxide sterilization) without deviations.

### Non-Clinical Testing

In accordance with the Design Failure Modes and Effects Analysis, verification and validation testing were identified to support the substantial equivalence of the Triever16 Curve. These tests included:

- Visual & Dimensional Inspection - Catheter
- Visual & Dimensional Inspection Dilator ●
- Guidewire Compatibility ●
- Insertion and Retraction Force through 16 Fr Introducer Sheath ●
- Rotation inside 16 Fr Introducer Sheath
- Recovery Angle ●
- Kink Radius
- Vacuum Testing .
- Catheter and Dilator Flow Rate Testing ●
- Clot Burden Removal Validation ●
- Simulated Use, Track & Tensile

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- . Simulated Use, Track & Torque
Test results demonstrated that all acceptance criteria were met; therefore, the device conforms to established product specifications.

Neither animal testing nor clinical testing were required for the determination of substantial equivalence.

### Conclusion

The Triever16 Curve has the same intended use/indications for use and principles of operation as the predicate. Performance data shows that the different technological characteristics between the devices do not raise any new or different questions of safety or effectiveness. Non-clinical bench testing supports the Triever16 Curve's substantial equivalence to the predicate device.