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510(k) Data Aggregation
(30 days)
STREERABLE PTCA GUIDEWIRE
For use in angiographic procedures to introduce and position catheters and interventional devices within the coronary and peripheral vasculature
Utilizing a proprietary process, LRM produces a PTFE coated stainless steel steerable core. The proximal portion of the core wire is coated with PTFE to provide lubricity and improve wire handling. A platinum alloy coil, placed within the confines of the outer coil and over-wrapping the ribbon section, provides radiopacity in the distal tip. The coils are secured in their location by solder, which is attached to the core. The proximal end of the outer coil is attached to the core with braze, and the distal end has a mid-point of the outer coil which is attached to the core with solder. On the models with markers, two additional radiopaque markers that are .009" platinum coils in a 5mm length are provided. The distal portion may be either a 30 cm long stainless steel coil with a 2 cm long inner platinum coil to provide radiopacity or a 30 cm long platinum coil (for radiopacity). The product is offered with a shapeable straight tip or in a preshaped configuration. The guidewires are coated with MDX (silicone).
This looks like a 510(k) submission for a guidewire, which is a medical device, not a software algorithm or AI device. Therefore, many of the requested categories for AI/algorithm studies (such as MRMC studies, number of experts for ground truth, sample size for training sets, etc.) are not applicable.
However, I can extract information related to the device's performance, acceptance criteria, and the studies performed to demonstrate equivalence to a predicate device.
Here's the closest representation of the requested table and information based on the provided text:
1. Table of Acceptance Criteria and Reported Device Performance
Test Performed | Acceptance Criteria (Implicit) | Reported Device Performance |
---|---|---|
Visual Appearance | Per established criteria (not explicitly detailed, but expected to be free from defects, meet visual specifications) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Dimensional Measurement - Outside Diameter of Core | Per established criteria (not explicitly detailed, but expected to be within specified tolerances) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
PTFE Coating Durability | Ability of the coating to adhere to the core wire material (not explicitly detailed, but expected to meet or exceed a minimum adhesion threshold) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Silicone Adhesion | Coating adherence when wire is subjected to wire flexure and tested in a powder (not explicitly detailed, but expected to meet an adhesion standard) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Lubricity | Force required to insert and withdraw the guidewire from a shaped catheter lumen (not explicitly detailed, but expected to be below a maximum force) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Pull Test | Strength of materials and joints in the guidewire (not explicitly detailed, but expected to meet or exceed minimum strength requirements) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Torque Control | Guidewire rotational control in a 360° radius (not explicitly detailed, but expected to demonstrate effective and accurate control) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Linear Stiffness (Distal Tip) | Flexibility of the distal tip (not explicitly detailed, but expected to fall within a specified range) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Lateral Stiffness (Distal Tip to Body) | Stiffness/flexibility of the guidewire from distal tip through to the guidewire body (not explicitly detailed, but expected to fall within a range) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Radiopacity | Ability of the device to be seen under fluoroscopy, simulating body mass density (not explicitly detailed, but expected to be clearly visible) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Corrosion Resistance | Resistance to oxidation over a period of time (not explicitly detailed, but expected to show no significant corrosion within specified timeframe) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Tip Shape Memory/Retention | Tip form after repeated exposure to a tortuous path (not explicitly detailed, but expected to retain shape effectively) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Extension Joint Coupling | Ease of joint connection (not explicitly detailed, but expected to connect easily and securely) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Wire Flexure | Coating damage and guidewire breakage after repeated flexure (not explicitly detailed, but expected to show no damage or breakage) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Wire Fracture Test | Breakage after wrapping the distal portion around a mandrel (not explicitly detailed, but expected to show no breakage) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Combined Load (Torsional Integrity) | Torsional integrity with applied load and torque (not explicitly detailed, but expected to maintain integrity without failure) | "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS." |
Study Description:
To demonstrate substantial equivalence for the proposed steerable PTCA guidewire, Lake Region Manufacturing, Inc. (LRM) performed various tests based on:
- FDA guidance: "Coronary and Cerebrovascular Guidewire Guidance" (January 1995)
- ISO 11070: "Sterile Single-use Intravascular Catheter Introducers"
- Internal test protocol requirements
The testing aimed to ensure that changes made to the device (addition of marker coil bands, removal of PTFE sections for positioning aid) met predetermined acceptance criteria, comparing it against their predicate device (510(k) K970376). The "RESULTS" section explicitly states: "ALL TEST RESULTS WERE WITHIN PRESCRIBED SPECIFICATION LIMITS."
2. Sample Size Used for the Test Set and Data Provenance:
- Sample Size: The document does not specify the exact sample size for each test. It generally refers to "Test pieces" and "Configurations, including straight and shaped distal tips were inspected."
- Data Provenance: The data is prospective as the tests were performed on "Test pieces...produced following current manufacturing processes and procedures" specifically for this submission. The origin is Lake Region Manufacturing, Inc. in Chaska, MN, USA.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Their Qualifications:
- Not Applicable. This is a medical device (guidewire) performance testing, not an AI/algorithm study requiring expert-established ground truth for image interpretation or diagnosis. The "ground truth" here is the physical measurement and performance against established engineering and regulatory specifications.
4. Adjudication Method for the Test Set:
- Not Applicable. As this is not an AI/algorithm study involving human interpretation of data where adjudication would be relevant. The "adjudication" is inherent in whether the physical tests met the predefined engineering and regulatory specifications.
5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:
- Not Applicable. This is not an AI/algorithm device. No MRMC study was performed.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
- Not Applicable. This is not an AI/algorithm device.
7. The type of ground truth used:
- The "ground truth" used for this device testing is based on engineering specifications, established regulatory guidance (FDA, ISO), and validated internal test protocols. It's about meeting physical and functional performance criteria rather than diagnostic accuracy against a clinical outcome.
8. The sample size for the training set:
- Not Applicable. This is not an AI/algorithm device, so there is no "training set."
9. How the ground truth for the training set was established:
- Not Applicable. This is not an AI/algorithm device, so there is no "training set" or ground truth for one.
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