The AcQCross™ Qx Integrated Transseptal Dilator/Needle is indicated to puncture the interatrial septum to gain access to the left side of the heart whereby various cardiovascular catheters are introduced.
Device Story
AcQCross™ Qx is a single-use, sterile integrated transseptal dilator and needle. It features an elongated shaft with a tapered tip and a central lumen for guidewire tracking (up to 0.032"). A hollow stainless steel needle is housed within the lumen, connected to a spring-tensioned actuator in the handle. The operator uses a slider button to advance the needle. The handle includes a Luer connector for lumen access and an electrical connector for intracardiac electrogram (EGM) monitoring or radiofrequency (RF) energy delivery via an electrosurgical generator to assist septal puncture. Used in clinical settings by physicians, the device is compatible with various commercially available transseptal sheaths. By combining dilator and needle functions, it simplifies the transseptal access procedure, potentially reducing procedural steps and improving efficiency in gaining left-heart access.
Clinical Evidence
No clinical data. Substantial equivalence is supported by bench testing, including biocompatibility (ISO 10993-1), sterilization validation (ISO 11135), electrical safety/EMC (IEC 60601-1, 60601-1-2, 60601-2-2), and mechanical performance testing (curve retention, pushability, needle actuation, electrical continuity, and tensile strength).
Technological Characteristics
Materials: Polyethylene Hexene Copolymer, HDPE, 304 stainless steel, polycarbonate. Energy: RF current for septal puncture. Connectivity: Electrical connector for EGM monitoring/RF. Dimensions: 8.5F and 12F compatible; guidewires up to 0.032". Sterilization: Ethylene Oxide (EO). Design: Integrated dilator/needle with spring-tensioned actuator.
Indications for Use
Indicated for patients requiring interatrial septal puncture to facilitate access to the left heart for the introduction of cardiovascular catheters.
Regulatory Classification
Identification
A catheter introducer is a sheath used to facilitate placing a catheter through the skin into a vein or artery.
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April 6, 2021
Acutus Medical Inc. % Prithul Bom Most Responsible Person Regulatory Technology Services. LLC 1000 Westgate Drive, Suite 510k Saint Paul, Minnesota 55114
Re: K210685
Trade/Device Name: AcQCross™ Ox Integrated Transseptal Dilator/Needle Regulation Number: 21 CFR 870.1340 Regulation Name: Catheter Introducer Regulatory Class: Class II Product Code: DYB Dated: March 6, 2021 Received: March 8, 2021
Dear Prithul Bom:
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/cfpmr/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.
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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 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 53 1 -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/cdrl-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-devices/device-comprehensive-regulatoryassistance/contact-us-division-ind-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,
# Jaime Raben -S
for Rachel Neubrander Assistant Director DHT2B: Division of Circulatory Support, Structural and Vascular Devices OHT2: Office of Cardiovascular Devices Office of Product Evaluation and Ouality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known)
K210685
Device Name
AcQCross™ Qx Integrated Transseptal Dilator/Needle
Indications for Use (Describe)
The AcQCross™ Qx Integrated Transseptal DilatorNeedle is indicated to puncture the interatrial septum to gain access to the left side of the heart whereby various cardiovascular catheters are introduced.
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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Image /page/3/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of the word "ACUTUS" in a sans-serif font, with the letters in gray. Below the word "ACUTUS" is the word "MEDICAL" in a smaller, orange sans-serif font. The dot above the letter "i" in Acutus is also orange.
# 510(K) SUMMARY
510(k) Number: K210685
Date Prepared: April 5, 2021
# Table 5.1: Submitter Information
| Manufacturer: | Manufacturer's Contact Person: |
|-----------------------------------------------|--------------------------------|
| Acutus Medical<br>2210 Faraday Ave, Suite 100 | Sarah Clay |
| Carlsbad, CA 92008 | Regulatory Affairs Associate |
| US FDA ERN: 3012120746 | Phone: (949)291-7811 |
| | Fax: (442) 232-6081 |
| | Email: sarah.clay@acutus.com) |
## Table 5.2: Device Information
| Trade Name | AcQCross™ Qx Integrated Transseptal Dilator/Needle |
|----------------------------|----------------------------------------------------|
| Common Name | Dilator/Transseptal Needle |
| Classification Name | Catheter Introducer |
| Regulation | 21 CFR 870.1340 |
| Product Code | DYB |
| Regulatory Classification: | Class II |
| Device Panel: | Cardiovascular |
The Acutus AcOCross™ Ox Integrated Transseptal Dilator/Needle is substantially equivalent to the previously cleared predicate, AcQGuide Catheter Introducer Sets (Table 5.3). This device has not been subject to a design-related recall.
# Table 5.3: Predicate Devices
| Predicate Device | Manufacturer | FDA 510(k) |
|------------------------------------------------------|----------------|------------|
| AcQGuide Catheter Introducer<br>Sets w/ AcQCross™ Qx | Acutus Medical | K193509 |
AcOCross™ Ox was cleared under K193509, as part of the AcOGuide Catheter Introducer Sets (AcQGuide Flex® and AcQGuide Mini® Introducers with AcQCross™ Ox Dilator/Transseptal Needle), which are manufactured by Acutus Medical, Inc. Acutus Medical seeks clearance for AcQCross™ Qx as a standalone device in this submission, that can be used with certain commercially available transseptal sheaths.
# 5.1 Device Description
AcQCross™ Qx combines the conventional vessel dilator and transseptal needle into a single device (Figure 1). AcQCross™ Ox consists of an elongated shaft with a tapered tip and central lumen to track over a guidewire. The lumen of AcQCross™ Qx is fitted with a hollow stainless steel transseptal needle (Figure 2). Both the shaft and needle are connected to the proximal handle of AcQCross™ QX. The lumen of the needle will allow for guidewires up to 0.032" in diameter. The needle is affixed to a spring-tensioned actuator in the handle of AcQCross™ QX
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Image /page/4/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of the word "ACUTUS" in a stylized, sans-serif font, with the letters in gray. Below "ACUTUS" is the word "MEDICAL" in a smaller, sans-serif font, with the letters in orange. The logo is simple and modern, and the use of gray and orange gives it a professional look.
that prevents needle extension until the operator purposely advances the needle via a slider button located on the outer surface of the handle. The proximal handle is fitted with a Luer connector to gain access to the central lumen of the needle. The handle is also fitted with an electrical connector that allows for monitoring intracardiac electrograms (EGMs) from the needle while in the heart utilizing the EGM adapter cable, and/or allows for the application of radiofrequency (RF) current from an electrosurgical generator to facilitate the septal puncture utilizing the ES adapter cable. AcQCross™ Qx is for single-use only and is provided sterile.
Image /page/4/Figure/2 description: The image shows two diagrams of a medical device, with labels pointing to different parts. The top diagram shows the internal components of the device, including the internal needle, Luer fitting, tension spring, electrical pin plug, and dilator shaft. The bottom diagram shows the external components of the device, including the proximal Luer fitting, spring-tensioned push button for needle extension, electrical connector for ECG monitoring, male interlock for mating with introducer hub, and dilator shaft.
Figure 1: AcQCross™ Qx Integrated Transseptal Dilator/Needle
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Image /page/5/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of two lines of text. The top line reads "ACUTUS" in a sans-serif font, with a small orange dot above the left side of the letter A. The bottom line reads "MEDICAL" in a smaller, orange sans-serif font.
Image /page/5/Picture/1 description: The image shows a medical device, specifically a needle inside the lumen of a dilator shaft. The device has a long, thin, blue shaft with a handle on one end. A magnified view shows the needle inside the dilator shaft, with small markings along the shaft. The image provides a detailed view of the device's construction and components.
Figure 2: AcQCross™ Qx Needle inside lumen of dilator shaft
AcQCross™ Qx is designed to be compatible with certain commercially available transseptal sheaths. Table 5.4 lists the AcQCross™ Qx variants for which Acutus Medical, Inc. is seeking clearance.
| Table 5.4: AcQCross™ Qx Model Numbers | | | |
|---------------------------------------|-----------------|-----------------------------------------------------------|--------------------------------------------------------------------|
| Product | Model<br>Number | Compatible Sheath<br>configurations | Model Number |
| AcQCross™ Qx – AG 61<br>cm | 900300 | Abbott Agilis NxT 8.5F steerable sheath – 61cm | G408318(SMALL CURL)<br>G408319(MED CURL) |
| AcQCross™ Qx – AG 71<br>cm | 900301 | Abbott Agilis NxT 8.5F steerable sheath – 71cm | G408320(SMALL CURL)<br>G408321(MED CURL)<br>G408324(LARGE CURL) |
| AcQCross™ Qx – SL 63<br>cm | 900302 | Swartz SL1 8.5F fixed curve guiding<br>sheath – 63cm | 407453 |
| AcQCross™ Qx – VZ 71<br>cm | 900303 | BSW Vizigo 8.5F bi-directional guiding<br>sheath – 71cm | D138501(SMALL CURVE)<br>D138502(MED CURVE)<br>D138503(LARGE CURVE) |
| AcQCross™ Qx – FC 65<br>cm | 900304 | Medtronic FlexCath Advance 12F<br>steerable sheath – 65cm | 4FC12 |
# 5.2 Indications for Use
The AcQCross™ Qx Integrated Transseptal Dilator/Needle is indicated to puncture the interatrial septum to gain access to the left side of the heart whereby various cardiovascular catheters are introduced.
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Image /page/6/Picture/0 description: The image shows the logo for Acutus Medical. The word "ACUTUS" is written in a sans-serif font in gray, with a small orange dot above the letter "A". Below the word "ACUTUS", the word "MEDICAL" is written in a smaller, orange sans-serif font. The logo is simple and modern, and the use of gray and orange gives it a professional look.
# 5.3 Comparison of Technological Characteristics with the Predicate Device
| Table 5.5: Substantial Equivalence Table- Regulatory Information | | | |
|------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------|
| Feature | Proposed Device<br>AcQCross™ Qx Integrated Transseptal<br>Dilator/Needle(K210685) | Predicate Device<br>AcQGuide Catheter Introducer Sets (w/<br>AcQCross™ Qx) (K193509) | Analysis of Differences |
| Classification | 21 CFR 870.1340 | 21 CFR 870.1340 | Identical to the predicate device. |
| Product Code | DYB | DYB | Identical to the predicate device. |
| Product<br>diagram | Image: Proposed Device Product Diagram | Image: Predicate Device Product Diagram | Identical to the predicate device. |
| Indications for<br>Use Statement | To puncture the interatrial septum to gain access to<br>the left side of the heart whereby various<br>cardiovascular catheters are introduced. | Indicated for introducing various cardiovascular<br>catheters into the heart, including the left side of the<br>heart through the interatrial septum. | Identical to predicate device. |
| Key<br>Components | -Elongated shaft with tapered tip and central lumen<br>to track over guidewire.<br>-Hollow stainless steel transseptal needle. Shaft and<br>needle connected to proximal handle.<br>-Needle affixed to a spring tensioned actuator which<br>prevents needle extension until operator advances<br>needle via slider button located on the outer surface<br>of handle. | -Elongated shaft with tapered tip and central lumen to<br>track over guidewire.<br>-Hollow stainless steel transseptal needle. Shaft and<br>needle connected to proximal handle.<br>-Needle affixed to a spring tensioned actuator which<br>prevents needle extension until operator advances<br>needle via slider button located on the outer surface of<br>handle. | Identical to the predicate device. |
| Feature | Proposed Device<br>AcQCross™ Qx Integrated Transseptal<br>Dilator/Needle(K210685) | Predicate Device<br>AcQGuide Catheter Introducer Sets (w/<br>AcQCross™ Qx) (K193509) | Analysis of Differences |
| | -Proximal handle fitted with luer connector to gain<br>access to central lumen of needle.<br>-Handle fitted with electrical connector to allow<br>ECG monitoring or RF application. | -Proximal handle fitted with luer connector to gain<br>access to central lumen of needle.<br>-Handle fitted with electrical connector to allow ECG<br>monitoring or RF application. | |
| Dimensions | Needle length: Matched to Introducer<br>French sizes compatible: 8.5F, 12F<br>Guidewire sizes: up to .032" | Needle length: Matched to introducer<br>French sizes compatible: 8.5F<br>Guidewire sizes: up to .032" | Similar dimensions to predicate device.<br>These minor differences do not<br>potentially impact the safety and<br>effectiveness. |
| Material | Shaft: Polyethylene Hexene Copolymer; ethylene<br>homopolymer; barium sulfate with blue colorant<br>Needle: 304 Stainless steel Hypotube: 304 stainless<br>steel<br>Luer fitting: polycarbonate | Shaft: Polyethylene Hexene Copolymer; ethylene<br>homopolymer; barium sulfate with blue colorant<br>Needle: 304 Stainless steel Hypotube: 304 stainless<br>steel<br>Luer fitting: polycarbonate | Identical to predicate device. |
| Packaging | Pouch: Tyvek® 1073B Uncoated, Nylon Film<br>Backer card: High Density Polyethylene (HDPE)<br>Shelf Box: Solid bleach sulfate paperboard<br>Shipper: paperboard | Pouch: Tyvek® 1073B Uncoated, Nylon Film<br>Backer card: High Density Polyethylene (HDPE)<br>Shelf Box: Solid bleach sulfate paperboard<br>Shipper: paperboard | Identical to predicate device. |
| Sterilization | Ethylene Oxide (EO) | Ethylene Oxide (EO) | Identical to predicate device. |
| Shelf Life | 12 months | 12 months | Identical to predicate device. |
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Image /page/7/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of the word "ACUTUS" in a sans-serif font, with a small orange dot above the "A". Below the word "ACUTUS" is the word "MEDICAL" in a smaller, orange sans-serif font. The logo is simple and modern, and the use of orange gives it a sense of energy and innovation.
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Image /page/8/Picture/0 description: The image shows the logo for Acutus Medical. The logo consists of the word "ACUTUS" in gray, blocky letters. Below the word "ACUTUS" is the word "MEDICAL" in smaller, orange letters. The logo is simple and modern.
# 5.4 Performance Data
Performance testing for AcQCross™ Qx and the predicate device, the AcQGuide Catheter Introducer Sets, were performed in accordance with the following standards.
- ISO 11070: 2014 Sterile single-use intravascular introducers, dilators and guidewires .
- . ISO 10555-1: 2013 - Sterile, single-use intravascular catheters- Part 1: General Requirements
Other than the following modifications, AcQCross™ Qx as a standalone device is identical to that of the predicate device, the AcQGuide Catheter Introducer Sets(K193509).
Table 5.6 describes the differences between the AcQGuide Catheter Introducer Sets and AcQCross™ Ox.
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| Table 5.6: Summary of differences between Predicate Device (K193509) and AcQCross™ Qx, Subject Device | | | | | |
|-------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|--------------------------------------------------------------------------------------|
| | AcQGuide Catheter Introducer Sets (K193509) | | AcQCross™ Qx Subject Device | | Analysis of Differences |
| Dilator shaft effective length | Model | Length: | Model | Length | Minor differences in dimensions do not potentially impact safety and effectiveness. |
| | AcQGuide Mini(50cm) | $61.2cm \pm 2.0cm$ | 900302 | $67.7cm \pm 2.0cm$ | |
| | AcQGuide Mini(65cm) | $74.5cm \pm 2.0cm$ | 900300, 900304 | $83.5cm \pm 2.0cm$ | |
| | AcQGuide Flex(50cm) | $75.9cm \pm 2.0cm$ | 900301, 900303 | $93.4cm \pm 2.0cm$ | |
| | AcQGuide Flex(65cm) | $89 cm \pm 2.0cm$ | | | |
| Dilator outer diameter (in.) | $0.109" \pm .001"$ | | Model | Diameter | Minor differences in dimensions do not potentially impact safety and effectiveness. |
| | | | 900300, 900301, 900302 | $0.111" \pm .001"$ | |
| | | | 900303 | $0.114" \pm .001"$ | |
| | | | 900304 | $0.154" \pm .001"$ | |
| Dilator distal tip outer diameter | .056" | | .056" +.003/-.004 | | Minor differences in dimension does not potentially impact safety and effectiveness. |
| Handle lock feature | Handle tip compatible with AcQGuide Mini and Flex.<br>Image: Handle tip compatible with AcQGuide Mini and Flex. | | Handle tip modified to be compatible with each compatible sheath.<br>Image: FlexCath<br>Image: Agilis, Swartz<br>Image: Vizigo | | Minor differences in tip do not potentially impact safety and effectiveness. |
| Dilator to handle bond | Flared dilator and mechanical lock, which sit into handle to prevent axial movement. Adhesive is applied to the interface between the handle tip and the dilator to prevent rotation. | | Mechanical lock is removed, and new handle tip component with a chamfered end to fully encapsulate the proximal end of the dilator (including the flare) against the handle halves, preventing axial movement. Adhesive is applied between the handle tip and dilator to prevent rotation. | | Minor modification to bond do not potentially impact safety and effectiveness. |
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| | Image: [Adhesive Flare mechanical lock] | Image: [Adhesive Flare Handle Tip] | |
|--------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------|
| Backer card | Modified to accommodate longer device models by relocating AcQCross™ securing feature 1.25" to 0.5" from the edge. | Packaging is otherwise identical. No change to backer card materials, thickness, or overall footprint. Minor modification does not potentially impact safety and effectiveness. | |
| Colorant; non-patient contacting component | ABS Cornflower Colorant (Pantone 284C) ABS Dove Gray Colorant (Pantone 428C) | Lustran 348 ABS, Cool Grey PMS 3C Lustran, 348-012002, Orange PMS 144C | Modified colorant does not potentially impact safety and effectiveness. |
| Material change to spring; non-patient contacting component | Steel music wire | 304 stainless steel | Minor change to material does not potentially impact safety and effectiveness. |
| Change to adhesive; indirect and non-patient contacting components | Loctite 401 & 411 (Base material: Ethyl Cyanoacrylate, Acrylic UV Curable) | Loctite 4060 (Base material: Ethyl Cyanoacrylate) Loctite 4311 (Base material: Acrylic UV Curable) | No change to base materials; minor change to adhesive formulation does not potentially impact safety and effectiveness. |
| Formulation of shaft material | 40% LDPE, 40% HDPE, 20% BaSO4 | 70% HDPE, 30% BaSO4 | Modified formulation does not potentially impact safety and effectiveness. |
| French size | 8.5F | 8.5F, 12F | French size determined by compatible sheath. Differences in dimension do not potentially impact safety and effectiveness. |
| Shaft Supplier | MET, Biomerics | MET, Biomerics, Apollo | Shaft supplier supplies identical components. Difference in supplier does not potentially impact safety and effectiveness. |
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Image /page/11/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of the word "ACUTUS" in a sans-serif font, with the letters in gray. Below the word "ACUTUS" is the word "MEDICAL" in a smaller, sans-serif font, with the letters in orange. The logo is simple and modern, and the use of color helps to make it stand out.
AcQCross™ Ox and the AcQGuide Catheter Introducer Sets are otherwise identical in terms of materials, dimensions, packaging, shelf-life and sterilization. Therefore, performance testing has been leveraged from the AcQGuide Catheter Introducer Sets for the subject device. The following performance testing was conducted in support of the substantial equivalence determination.
# 5.4.1 Biocompatibility
Biocompatibility testing was performed on AcQCross™ Qx in accordance with AAMI/ANSI/ISO 10993-1:2009 - Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process. Testing was performed on AcQCross™ Ox as packaged with the AcOGuide Catheter Introducer Sets, which is identified in this submission as the predicate device. Biocompatibility testing for the AcQGuide Catheter Introducer Sets(K193509) was submitted with the predicate device, Flextra™ Steerable Introducer (K170373) and Guider™ Catheter Introducer (K171081), with Lancer™ Integrated Dilator/Transseptal Needle. The previously submitted biocompatibility testing in K170373 and K171081 has been leveraged for the subject device. Additional cytotoxicity and hemolysis testing was performed as a result of a new shaft supplier. The results demonstrate that AcQCross™ Qx meets the requirements of ISO 10993-1 and is biocompatible.
# 5.4.2 Sterilization
Sterilization validation was performed on AcOCross™ Ox in accordance with ISO 11135: 2014 -Sterilization of health-care products- Ethylene Oxide- Requirements for development, validation and routine control of a sterilization process for medical devices. AcQCross™ Ox is subjected to the identical ethylene oxide (EO) sterilization process as the predicate device, the AcQGuide Catheter Introducer Sets, to meet a sterility assurance level (SAL) of 106. Testing was performed on AcQCross™ Qx as packaged with the AcQGuide Catheter Introducer Sets. The previously submitted sterilization validation of K170373 and K171081 has been leveraged for the subject device. The backer card was modified to accommodate the longer device models (900301, 900303), by relocating the AcQCross™ securing feature 1.25" to 0.5" from the edge. Otherwise, packaging for AcQCross™ Qx as a standalone device is identical to that of the AcQGuide Catheter Introducer Sets, with the exclusion of the introducer. This minor change was adopted into the existing process by Acutus Medical, Inc. per AAMI TIR28, Product Adoption and Process Equivalence for Ethylene Oxide Sterilization, and requires no further process validation.
# 5.4.3 Electrical Safety and Electromagnetic Compatibility (EMC)
The previously submitted EMC and Electrical Safety testing of K170373 and K171081, and of the predicate device (K193509) has been leveraged for the subject device. Testing was completed in accordance with ANSI/AAMI IEC 60601-1:2005, IEC 60601-1, Medical electrical equipment - Part 1: General requirements for basic safety and essential performance, IEC 60601-1-2, Medical electrical equipment – Part 1-2: General requirements for the basic safety
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Image /page/12/Picture/0 description: The image shows the logo for Acutus Medical. The logo is composed of the word "ACUTUS" in a sans-serif font, with the letters in gray. Below the word "ACUTUS" is the word "MEDICAL" in a smaller, orange sans-serif font. The dot on the "i" in Acutus is also orange.
and essential performance - Collateral standard: Electromagnetic compatibility - Requirements and tests, and IEC 60601-2-2, Medical electrical equipment - Part 2-2: Particular requirements for the basic safety and essential performance of high frequency surgical equipment and high frequency surgical accessories.
# 5.4.4 Bench Testing
Design verification and validation was performed on AcQCross™ Qx as packaged with the AcQGuide Catheter Introducer Sets, identified in this submission as the predicate device. Where appropriate, the previously submitted performance testing of K170373 and K171081, and of the predicate device (K193509) has been leveraged for the subject device. Acutus Medical. Inc. performed additional performance testing to the modified, standalone AcOCross™ Ox in support of substantial equivalence with the predicate device. The following testing was performed for the standalone AcQCross™ Qx:
- Curve retention .
- . Pushability
- . Needle Actuation
- . Electrical Continuity
- . Shaft to handle tensile
Performance testing was also performed on AcQCross™ Qx with the various compatible sheaths to demonstrate that AcQCross™ performs as intended, and the addition of compatible sheath configurations do not potentially impact the safety or effectiveness of the device as compared to the predicate device. The following testing was performed:
- Needle Actuation .
- . Visual inspection
- Aspiration/Flushing .
- . Electrical Continuity
# 5.5 Conclusions
AcoCross™ Ox is a standalone version of a device that is currently cleared as a component of an introducer sheath system. AcQCross™ is made of identical materials and has minimal design modifications as referenced in Section 5.4. to that of the predicate device. AcQCross™ Qx performs as intended and presents no unacceptable risks to the intended patient population or end user. The non-clinical tests demonstrated that the device is as safe and effective as the predicate device.
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Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.