K133177 · Concentric Medical, Inc. · DQY · Feb 25, 2014 · Cardiovascular
Device Facts
Record ID
K133177
Device Name
MODIFIED HD GUIDE CATHETER
Applicant
Concentric Medical, Inc.
Product Code
DQY · Cardiovascular
Decision Date
Feb 25, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1250
Device Class
Class 2
Attributes
Therapeutic, Real-World Evidence
Real-World Evidence
Submission
Device
Sponsor
RWD Sources
RWE Use Summary
Key Tags
K133177 · Feb 25, 2014
MODIFIED HD GUIDE CATHETER
Concentric Medical, Inc.
TREVO 2 IDE study clinical data; TREVO post-market study clinical data; Post-market surveillance product complaints; Medical Device Reports (MDRs); Published clinical literature
The sponsor reviewed retrospective cohorts from two clinical studies (TREVO 2 and TREVO) to assess revascularization rates and safety when the device was used as a conduit for retrieval. Additionally, post-market surveillance data and literature reviews were used to confirm safety and performance in routine clinical practice.
Retrospective clinical data; Post-market surveillance; MDR analysis; Literature review; Thrombectomy
Clinical Evidence
Study Design
Population
Comparator
Key Endpoints
TREVO 2 IDE study; Retrospective cohort analysis of IDE trial data; Study Period: February 3, 2011 – December 1, 2011
178 subjects (99 patients in DAC cohort); Sample Size: 99; Number of Sites: 26 (US) and 1 (Spain)
TREVO post-market study; Retrospective cohort analysis of prospective post-market study; Study Period: February 2010 – August 2011
60 patients (34 in DAC cohort); Sample Size: 34; Number of Sites: 7 (Europe)
Not applicable for this study
Revascularization rate, NIHSS improvement
Indications for Use
The Modified HD Guide Catheter is indicated for use in facilitating the insertion and guidance of an occlusion catheter, infusion catheter or other appropriate microcatheter into a selected blood vessel in the peripheral, coronary and neuro vascular systems. It may also be used as a diagnostic angiographic catheter and as a conduit for retrieval devices.
Device Story
Modified HD Guide Catheter is a single-lumen, braid-reinforced, variable-stiffness catheter with a hydrophilic coating, radiopaque distal marker, and proximal luer hub. Used in peripheral, coronary, and neurovascular systems to facilitate insertion/guidance of microcatheters, perform diagnostic angiography, and serve as a conduit for retrieval devices during thrombectomy. Operated by physicians in clinical settings. Device provides support in distal anatomy and allows adjunctive aspiration during retriever withdrawal. Output is visual angiographic guidance and mechanical support for interventional tools. Benefits include improved access to distal anatomy and successful clot retrieval in acute ischemic stroke patients.
Clinical Evidence
Clinical evidence includes retrospective review of TREVO 2 (n=99) and TREVO (n=34) studies. Results showed revascularization rates of 84.8% and 96.7% respectively, with no device-related adverse events. Literature review of 15 articles confirmed safety and efficacy in acute ischemic stroke thrombectomy. Post-market surveillance (MDRs) from 2008-2013 showed low complaint rates (0.21%) with no new risks identified.
Indicated for use in facilitating insertion/guidance of occlusion, infusion, or microcatheters into peripheral, coronary, and neurovascular vessels; diagnostic angiography; and as a conduit for retrieval devices in patients undergoing thrombectomy procedures.
Regulatory Classification
Identification
A percutaneous catheter is a device that is introduced into a vein or artery through the skin using a dilator and a sheath (introducer) or guide wire.
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K133177
FEB 2 5 2014
## 510(k) Summary
| Summary Date: | January 30, 2014 | |
|----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------|
| Submitter Name and<br>Address: | Concentric Medical, Inc.<br>301 E. Evelyn Avenue<br>Mountain View, CA 94041<br>Tel 650-938-2100<br>Fax 650-237-5230<br>Facility Registration #2954917 | |
| Contact: | Rhoda Santos<br>Principal Regulatory Affairs Specialist<br>Phone: 510 413-2269<br>Fax: 510 413-2558<br>Email: rhoda.santos@stryker.com | |
| Trade Name: | Modified HD Guide Catheter | |
| Common Name: | Percutaneous Catheter | |
| Classification Name: | Percutaneous Catheter, 21CFR 870.1250 – Class II | |
| Product Code: | DQY and DQO | |
| Legally Marketed<br>Predicate Devices: | Reference<br>(Clearance Date) | Device |
| | K090335 (May 6, 2009) | Concentric HD Guide Catheter |
| | K110483 (April 4, 2011) | Modified HD Guide Catheter |
| | K112404 (March 15, 2012) | Concentric Balloon Guide Catheter |
| Device Description: | The Modified HD Guide Catheters are single lumen, braided,<br>variable stiffness shaft catheters designed for use in facilitating the<br>insertion and guidance of an occlusion catheter, infusion catheter or<br>other appropriate microcatheter into a selected blood vessel in the<br>peripheral, coronary or neuro vascular system. The catheters include<br>a radiopaque marker on the distal and for angiographic visualization | |
adapter is provided with each catheter.
and a luer hub on the proximal end allowing attachments for flushing and aspiration. The catheter shaft has a hydrophilic coating to reduce friction during use. A rotating hemostatic valve with side-arm
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#### Accessories:
The Modified HD Guide Catheter is packaged with a Rotating Hemostasis Valve.
#### Indications for Use / Intended Use:
The proposed Indications for Use are as follows:
The Modified HD Guide Catheter is indicated for use in facilitating the insertion and guidance of an occlusion catheter, infusion catheter or other appropriate microcatheter into a selected blood vessel in the peripheral, coronary and neuro vascular systems. It may also be used as a diagnostic angiographic catheter and as a conduit for retrieval devices.
#### Technological Characteristics and Product Feature Comparison:
The subject device has the same technological characteristics as the predicate devices (K090335 and K110483). The device design, materials, fundamental scientific technology, materials and processes for packaging and sterilization have not been changed from the previous predicate devices (K090335 and K110483). The subject device differs from the predicate device, K112404 primarily in that it does not include a balloon at the distal tip or a second lumen.
A tabular comparison of the specific technological characteristics between the predicate devices and subject device is provided below.
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| Product Feature Comparison of Subject Device with Predicate Devices | | | | |
|---------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Feature | Predicate Device,<br>K112404 | Predicate Device,<br>K090335 | Predicate Device,<br>K110483 | Subject Device |
| Indications for Use | The Concentric Balloon<br>Guide Catheter is indicated<br>for use in facilitating the<br>insertion and guidance of an<br>intravascular catheter into a<br>selected blood vessel in the<br>peripheral and neuro<br>vascular systems. The<br>balloon provides temporary<br>vascular occlusion during<br>these and other angiographic<br>procedures. The Balloon<br>Guide Catheter is also<br>indicated for use as a conduit<br>for Retrieval devices | The HD Guide Catheter is<br>indicated for the<br>removal/aspiration of fresh,<br>soft emboli and thrombi from<br>vessels in the arterial system. | The Modified HD Guide<br>Catheter is indicated for use<br>in facilitating the insertion<br>and guidance of an occlusion<br>catheter, infusion catheter or<br>other appropriate<br>microcatheter into a selected<br>blood vessel in the<br>peripheral, coronary and<br>neuro vascular systems. It<br>may also be used as a<br>diagnostic angiographic<br>catheter. | The Modified HD Guide<br>Catheter is indicated for use<br>in facilitating the insertion<br>and guidance of an<br>occlusion catheter, infusion<br>catheter or other<br>appropriate microcatheter<br>into a selected blood vessel<br>in the peripheral, coronary<br>and neuro vascular systems.<br>It may also be used as a<br>diagnostic angiographic<br>catheter and as a conduit for<br>retrieval devices. |
| Feature<br>Device Description | Predicate Device,<br>K112404 | Predicate Device,<br>K090335 | Predicate Device,<br>K110483 | Subject Device |
| | The Concentric Balloon<br>Guide Catheters are<br>coaxial-lumen, braid-<br>reinforced, variable<br>stiffness catheters<br>designed for use in<br>facilitating the insertion<br>and guidance of an<br>intravascular catheter<br>into a selected blood<br>vessel in the peripheral<br>and neuro vascular<br>systems. A radiopaque<br>marker is included on the<br>distal end for<br>angiographic<br>visualization. A<br>compliant balloon is<br>mounted on the distal end<br>to provide temporary<br>vascular occlusion during<br>angiographic procedures.<br>A bifurcated luer hub on<br>the proximal end allows<br>attachments for flushing,<br>inflation and aspiration.<br>Balloon Guide Catheter<br>dimensions and<br>maximum recommended<br>balloon inflation volume<br>are indicated on product<br>label. If indicated on<br>product label, a dilator is<br>provided. | The HD Guide Catheter<br>consists of a single lumen,<br>braided, variable stiffness<br>shaft with a radiopaque<br>marker on the distal end and<br>a luer hub on the proximal<br>end. The catheter shaft has a<br>hydrophilic coating to reduce<br>friction during use. A<br>rotating hemostatic valve<br>with side-arm adapter is<br>provided with each catheter. | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K110483 |
| Feature | Predicate Device,<br>K112404 | Predicate Device,<br>K090335 | Predicate Device,<br>K110483 | Subject Device |
| Outer Jacket | Pebax® | Pebax® | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Braid | Stainless Steel | Stainless Steel | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Strain Relief | Polyolefin | Polyolefin | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Braid distal end securement | PTFE | PTFE | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Catheter Hub | Polyurethane | Pebax | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Marker Band | Platinum/Iridium | Platinum/Iridium | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Adhesive | Acrylic (Acrylated<br>Urethane) | Acrylic (Acrylated Urethane) | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Outer jacket coating | NA | hydrophilic coating | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Labeled Shaft Outer Diameter | 7F - 9F | 3.9F - 5.2F | 6.3F | Same as predicate devices,<br>K090335 and K114083 |
| Effective Lengths | 80cm or 95cm | 115 cm – 136 cm | 105-120 cm | Same as predicate devices,<br>K090335 and K114083 |
| Accessory Devices Provided | Dilator | Rotating Hemostatic Valve | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Packaging Materials and<br>Configuration | Polyethylene Tube and<br>HDPE Packaging Card | Polyethylene Tube and<br>HDPE Packaging Card | Same as predicate device,<br>K090335 | Same as predicate devices,<br>K090335 and K114083 |
| Sterilization Method | EO Sterilization | Same | Same | Same |
| How Supplied | Sterile, Single Use | Same | Same | Same |
C ... De t Feature Comparison of Subject Device with Produ
:
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# 510(k) Summary (cont
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# 510(k) Summary (cont
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#### Risk Assessment
Risk assessment of the Modified HD Guide Catheter has been conducted in accordance with EN ISO 14971:2012. As a result of the risk assessment, the Instructions for Use have been revised to include recommended aspiration procedure steps for use of the Modified HD Guide Catheter with retrieval devices.
#### Testing and Non-Clinical Performance Data:
The results of verification and validation conducted on the Modified HD Guide Catheter demonstrate that it performs as designed, is suitable for its intended use and is substantially equivalent to the predicate devices (K090335 and K110483). The same performance standards, specifications and results as those submitted in the predicate devices (K090335 and K110483) are applicable to the subject device because the designs are identical and no changes have been made to the design, materials, processes, or packaging materials as a result of the expanded indications for use. Therefore, the following design verification tests submitted in the predicate devices (K090335 and K110483) are applicable to the subject device and its new indications for use:
- . Tip Patency during Aspiration: the ability of the device tip to maintain patency during aspiration during simulated use testing was successfully evaluated.
- Air Leak Resistance during Aspiration: the ability of the device to resist leakage ♥ during aspiration was successfully evaluated.
- Leak Testing: the ability of the device to resist leakage was successfully evaluated.
- Dimensional Testing: dimensions of the device were successfully verified. .
- Tensile Testing: the tensile strength of the device was successfully evaluated. .
- . Kink Resistance Testing: the ability of the device to withstand curves without kinking was successfully evaluated.
- . Flexural Fatigue Testing: the flexural fatigue tolerance of the device was successfully evaluated.
- Torque Testing: the ability of the device to withstand torsional forces was successfully evaluated.
- Tip Flexibility Testing: the force to deflect the catheter tip was successfully . evaluated.
- Coating Lubricity and Durability Testing: the durability of the hydrophilic coating . was successfully evaluated.
- Flow Rate Testing: the rate of flow through the device lumen was successfully . evaluated.
- . Luer Testing: luer integrity and conformance to luer standards was successfully evaluated.
To support the expansion of the Indications for Use (IFU), performance testing utilized design validation / simulated use testing to confirm that the subject device and accessories meets user needs "as a conduit for retrieval devices" and continue to meet design requirements of the predicate device. Simulated use testing evaluates the device's ability to be used in a neurovascular model per procedural instructions outlined in the modified Instructions for Use. Based on the results of the risk assessment, no other testing was required to demonstrate the device meets intended uses.
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Design validation/simulated use testing was conducted using a neurovascular model cast from actual human neurovascular arteries. This bench testing model replicates the tortuosity, diameter and location of the arteries in the neurovasculature. The model incorporates a re-circulating water bath at 37℃ pressurized between 2 - 2.5 psi (100 -126 mm Hg) to simulate the human arterial circulation.
The simulated use tests described in Table 2 were conducted in support of the expanded indications for use. Finished sterilized devices were used for the simulated use testing. All design validation testing followed the procedural instructions outlined in the Instructions for Use which was revised to include a "Recommended Aspiration Procedure" for use with retrieval devices. Based on the successful completion of the testing, the subject device and its accessories have met all of the pre-specified requirements. A summary of the design validation / simulated use testing and the results is described in Table 2 below.
| Test | Test Method Summary | Results |
|-------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------|
| Tip Patency during Aspiration | Purpose: Tip patency is evaluated in a<br>neurovascular model to verify that the distal tip of<br>catheter remains patent during vigorous aspiration<br>to avoid loss of suction at the distal tip. | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use. |
| | Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The catheter is aspirated<br>vigorously using a 60 cc syringe and the shape of<br>the distal tip is visually verified to determine if<br>distal tip remains patent during aspiration. | Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| Lumen Compatibility | Purpose: Lumen compatibility is evaluated in a<br>neurovascular model to verify that guidewires and<br>other devices shall pass through the inner shaft of<br>the catheter with no more than moderate<br>resistance. | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use. |
| | Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter<br>is placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. A "compatible device" is<br>inserted through the inner shaft of the catheter and<br>assessed for degree of resistance through inner<br>shaft, i.e., easy, moderate, difficult, or not<br>possible. | Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
Table 2: Design Validation / Simulated Use Testing of Subject Device and Accessories
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# 510(k) Summary (cont.)
・
| Test | Test Method Summary | Results |
|----------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Lumen and Retriever<br>Compatibility | Purpose: Lumen and Retriever compatibility is<br>evaluated in a neurovascular model to verify that<br>the Retriever and microcatheter (as a system) is<br>able to be withdrawn through the catheter and<br>completely removed from the model without<br>device fracture.<br><br>Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The Retriever<br>and microcatheter is inserted through the catheter<br>to reach a specified target location following<br>procedural instructions outlined in the Instructions<br>for Use. The Retriever and microcatheter (as a<br>system) is pulled back through the catheter and<br>completely remove them from the model. The<br>Retriever is visually inspected for damage. | Pass<br><br>All samples met acceptance<br>criteria for expanded<br>indications for use.<br><br>Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| Infusion and Aspiration | Purpose: Infusion and aspiration of the catheter is<br>evaluated in a neurovascular model to verify that<br>the user is able to aspirate and inject fluid thru the<br>Extension Tubing with 60cc syringe.<br><br>Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The Retriever and<br>microcatheter are advanced (as a system) through<br>the BGC. The extension tubing is attached to the<br>Y-arm of the rotating hemostasis valve. Fluid is<br>infused vigorously through extension tubing with a<br>60cc syringe. While retracting both the Retriever<br>and microcatheter (as a system) through the<br>catheter to completely remove the system from the<br>model, a 60cc syringe is used to aspirate through<br>the extension tubing. When the Retriever is<br>retracted into the catheter tip, the user aspirates to<br>60cc's vigorously as the Retriever is fully retracted<br>in the catheter. The catheter is visually inspected<br>for damage. | Pass<br><br>All samples met acceptance<br>criteria for expanded<br>indications for use.<br><br>Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| Test | Test Method Summary | Results |
| Distal tip stability | Purpose: Distal tip stability is evaluated in a<br>neurovascular model to verify that the distal tip<br>does not move during retraction of the Retriever<br>and microcatheter (as a system) into the catheter.<br><br>Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The Retriever and<br>microcatehter are advanced (as a system) through<br>the catheter. The extension tubing is attached to<br>the Y-arm of the rotating hemostasis valve. Fluid<br>is infused vigorously through extension tubing<br>with a 60cc syringe. While retracting both the<br>Retriever and microcatheter (as a system) through<br>the catheter to completely remove the system from<br>the model, a 60cc syringe is used to aspirate<br>through the extension tubing. When the Retriever<br>is retracted into the catheter tip, the user aspirates<br>to 60cc's vigorously as the Retriever is fully<br>retracted in the catheter. The catheter is visually<br>inspected for damage. The distal tip of catheter is<br>visually inspected to verify it does not move<br>forward or back during retraction of the Retriever<br>and microcatheter (as a system). | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use.<br><br>Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| Mechanical and Functional<br>Integrity | Purpose: The catheter is inspected for mechanical<br>and functional integrity following simulated use in<br>a neurovascular model to verify that the catheter<br>maintains mechanical integrity (e.g., visible<br>damage, shaft kink, hub joints, shaft joints, tip<br>separation, corrosion) and that catheter function<br>was not impaired by the introducer sheath.<br><br>Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The Retriever and<br>microcatehter are advanced (as a system) through<br>the catheter. The extension tubing is attached to<br>the Y-arm of the rotating hemostasis valve. Fluid<br>is infused vigorously through extension tubing<br>with a 60cc syringe. While retracting both the<br>Retriever and microcatheter (as a system) through<br>the catheter to completely remove the system from<br>the model, a 60cc syringe is used to aspirate<br>through the extension tubing. When the Retriever<br>is retracted into the catheter tip, the user aspirates<br>to 60cc's vigorously as the Retriever is fully | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use.<br>Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| | retracted in the catheter. The catheter is visually | |
| Test | Test Method Summary | Results |
| Retriever Fracture | Purpose: Retriever fracture is evaluated in a<br>neurovascular model to verify that the Retriever is<br>free from fractures following simulated use<br>testing. | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use. |
| | Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The Retriever and<br>microcatheter are advanced (as a system) through<br>the catheter. The extension tubing is attached to<br>the Y-arm of the rotating hemostasis valve. Fluid<br>is infused vigorously through extension tubing<br>with a 60cc syringe. While retracting both the<br>Retriever and microcatheter (as a system) through<br>the catheter to completely remove the system from<br>the model, a 60cc syringe is used to aspirate<br>through the extension tubing. When the Retriever<br>is retracted into the catheter tip, the user aspirates<br>to 60cc's vigorously as the Retriever is fully<br>retracted in the catheter. The catheter is visually<br>inspected for damage. The Retriever is removed<br>from the microcatheter and visually inspected for<br>fractures. | Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
| Liquid leak resistance | Purpose: Liquid leak resistance of the catheter is<br>evaluated in a neurovascular model to verify that<br>the catheter does not leak from the shaft or<br>hub/shaft interface during use. | Pass<br>All samples met acceptance<br>criteria for expanded<br>indications for use. |
| | Method: A neurovascular model is placed in a re-<br>circulating water bath at 37°C and pressurized to<br>simulate human arterial circulation. The catheter is<br>placed in the model to a specified location<br>following procedural instructions outlined in the<br>Instructions for Use. The Retriever and<br>microcatheter are advanced (as a system) through<br>the catheter. The extension tubing is attached to<br>the Y-arm of the rotating hemostasis valve. Fluid<br>is infused vigorously through extension tubing<br>with a 60cc syringe. While retracting both the<br>Retriever and microcatheter (as a system) through<br>the catheter to completely remove the system from<br>the model, a 60cc syringe is used to aspirate<br>through the extension tubing. When the Retriever<br>is retracted into the catheter tip, the user aspirates<br>to 60cc's vigorously as the Retriever is fully<br>retracted in the catheter. The catheter is visually<br>inspected for leaks from the shaft or hub/shaft<br>interface during use. | Device continues to meet same<br>design requirements as<br>predicate devices (K090335<br>and K110483). |
·
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# 510(k) Summary (cont.)
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### 510(k) Summary (cont.)
Based on conformance with these test requirements, the Modified HD Guide Catheter is as safe, as effective, and performs as well as or better than the legally marketed predicate devices (K090335 and K110483).
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#### Clinical Performance Data:
To demonstrate su…
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
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.