(196 days)
The Kendal! Dual Lumen Catheters are intended for use as short-term vascular access for hemodialysis. The catheters can be inserted in the femoral, subclavian or jugular vein as required.
The Kendall Dual Lumen Catheters are single use, sterile devices. The single radiopaque cannula catheters have two distinct lumina which provide simultaneous "arterial" outflow and "venous" return. The catheters have two extension tubes, sach with a color-coded in-line clamp (red for arterial outflow, blue for venous return) and luer lock adapter. The catheters are sold in 8.5, 10.0 and 11.0 Fr sizes.
This document only provides information about a 510(k) submission for a medical device (Kendall CURITY Dual Lumen Subclavian Catheters) and does not describe acceptance criteria or a study proving the device meets those criteria in the context of diagnostic performance (e.g., sensitivity, specificity for image analysis).
The provided text focuses on demonstrating substantial equivalence to a predicate device, which is a different type of regulatory submission than one requiring a clinical performance study with defined acceptance criteria for diagnostic output.
Here's a breakdown based on the information provided, highlighting why most of your requested points cannot be answered:
1. A table of acceptance criteria and the reported device performance
- Not applicable / Not provided. The document describes non-clinical performance (flow rate, hemolysis, recirculation, biocompatibility) and notes these were "similar" to the predicate device. It does not define specific quantitative acceptance criteria for these tests nor does it provide a table of performance against such criteria. Crucially, there are no diagnostic performance metrics (e.g., sensitivity, specificity, AUC) because this is not a diagnostic device.
2. Sample size used for the test set and the data provenance (e.g. country of origin of the data, retrospective or prospective)
- Not applicable. No diagnostic test set was used. The non-clinical comparative testing would have involved lab-based samples for flow rate, hemolysis, and recirculation, but specific sample sizes, provenance, or study types (retrospective/prospective) are not detailed.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts (e.g. radiologist with 10 years of experience)
- Not applicable. No ground truth was established for a diagnostic test set.
4. Adjudication method (e.g. 2+1, 3+1, none) for the test set
- Not applicable. No diagnostic test set was used.
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
- No. This device is a vascular access catheter, not an AI-powered diagnostic tool. Therefore, an MRMC study is not relevant and was not performed.
6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done
- Not applicable. This is a medical device (catheter), not an algorithm or AI.
7. The type of ground truth used (expert consensus, pathology, outcomes data, etc)
- Not applicable. No ground truth for diagnostic purposes was established. The "truth" for the non-clinical tests would be the measured physical and functional properties of the catheters.
8. The sample size for the training set
- Not applicable. This is a medical device, not an AI model, so there is no training set in the context you're asking about.
9. How the ground truth for the training set was established
- Not applicable. As above, no training set for an AI model.
Summary of Relevant Information from the Provided Text:
- Device Type: Hemodialysis System and Accessories, specifically Kendall CURITY Dual Lumen Subclavian Catheters.
- Intended Use: Short-term vascular access for hemodialysis.
- Regulatory Pathway: 510(k) submission, demonstrating substantial equivalence to a predicate device (Neostar Dual Lumen Catheters, K941851).
- Performance Data Provided:
- Non-Clinical Tests: Comparative testing with the predicate device.
- Criteria included: flow rate, hemolysis, recirculation studies.
- Results: Found "similar physical and functional properties" to the predicate.
- Biocompatibility testing was also performed and demonstrated no bioactive components.
- Clinical Tests: "No clinical testing was performed."
- Non-Clinical Tests: Comparative testing with the predicate device.
- Conclusion: The device is similar in design, physical, and functional attributes to the predicate device.
§ 876.5540 Blood access device and accessories.
(a)
Identification. A blood access device and accessories is a device intended to provide access to a patient's blood for hemodialysis or other chronic uses. When used in hemodialysis, it is part of an artificial kidney system for the treatment of patients with renal failure or toxemic conditions and provides access to a patient's blood for hemodialysis. The device includes implanted blood access devices, nonimplanted blood access devices, and accessories for both the implanted and nonimplanted blood access devices.(1) The implanted blood access device is a prescription device and consists of various flexible or rigid tubes, such as catheters, or cannulae, which are surgically implanted in appropriate blood vessels, may come through the skin, and are intended to remain in the body for 30 days or more. This generic type of device includes various catheters, shunts, and connectors specifically designed to provide access to blood. Examples include single and double lumen catheters with cuff(s), fully subcutaneous port-catheter systems, and A-V shunt cannulae (with vessel tips). The implanted blood access device may also contain coatings or additives which may provide additional functionality to the device.
(2) The nonimplanted blood access device consists of various flexible or rigid tubes, such as catheters, cannulae or hollow needles, which are inserted into appropriate blood vessels or a vascular graft prosthesis (§§ 870.3450 and 870.3460), and are intended to remain in the body for less than 30 days. This generic type of device includes fistula needles, the single needle dialysis set (coaxial flow needle), and the single needle dialysis set (alternating flow needle).
(3) Accessories common to either type include the shunt adaptor, cannula clamp, shunt connector, shunt stabilizer, vessel dilator, disconnect forceps, shunt guard, crimp plier, tube plier, crimp ring, joint ring, fistula adaptor, and declotting tray (including contents).
(b)
Classification. (1) Class II (special controls) for the implanted blood access device. The special controls for this device are:(i) Components of the device that come into human contact must be demonstrated to be biocompatible. Material names and specific designation numbers must be provided.
(ii) Performance data must demonstrate that the device performs as intended under anticipated conditions of use. The following performance characteristics must be tested:
(A) Pressure versus flow rates for both arterial and venous lumens, from the minimum flow rate to the maximum flow rate in 100 milliliter per minute increments, must be established. The fluid and its viscosity used during testing must be stated.
(B) Recirculation rates for both forward and reverse flow configurations must be established, along with the protocol used to perform the assay, which must be provided.
(C) Priming volumes must be established.
(D) Tensile testing of joints and materials must be conducted. The minimum acceptance criteria must be adequate for its intended use.
(E) Air leakage testing and liquid leakage testing must be conducted.
(F) Testing of the repeated clamping of the extensions of the catheter that simulates use over the life of the device must be conducted, and retested for leakage.
(G) Mechanical hemolysis testing must be conducted for new or altered device designs that affect the blood flow pattern.
(H) Chemical tolerance of the device to repeated exposure to commonly used disinfection agents must be established.
(iii) Performance data must demonstrate the sterility of the device.
(iv) Performance data must support the shelf life of the device for continued sterility, package integrity, and functionality over the requested shelf life that must include tensile, repeated clamping, and leakage testing.
(v) Labeling of implanted blood access devices for hemodialysis must include the following:
(A) Labeling must provide arterial and venous pressure versus flow rates, either in tabular or graphical format. The fluid and its viscosity used during testing must be stated.
(B) Labeling must specify the forward and reverse recirculation rates.
(C) Labeling must provide the arterial and venous priming volumes.
(D) Labeling must specify an expiration date.
(E) Labeling must identify any disinfecting agents that cannot be used to clean any components of the device.
(F) Any contraindicated disinfecting agents due to material incompatibility must be identified by printing a warning on the catheter. Alternatively, contraindicated disinfecting agents must be identified by a label affixed to the patient's medical record and with written instructions provided directly to the patient.
(G) Labeling must include a patient implant card.
(H) The labeling must contain comprehensive instructions for the following:
(
1 ) Preparation and insertion of the device, including recommended site of insertion, method of insertion, and a reference on the proper location for tip placement;(
2 ) Proper care and maintenance of the device and device exit site;(
3 ) Removal of the device;(
4 ) Anticoagulation;(
5 ) Management of obstruction and thrombus formation; and(
6 ) Qualifications for clinical providers performing the insertion, maintenance, and removal of the devices.(vi) In addition to Special Controls in paragraphs (b)(1)(i) through (v) of this section, implanted blood access devices that include subcutaneous ports must include the following:
(A) Labeling must include the recommended type of needle for access as well as detailed instructions for care and maintenance of the port, subcutaneous pocket, and skin overlying the port.
(B) Performance testing must include results on repeated use of the ports that simulates use over the intended life of the device.
(C) Clinical performance testing must demonstrate safe and effective use and capture any adverse events observed during clinical use.
(vii) In addition to Special Controls in paragraphs (b)(1)(i) through (v) of this section, implanted blood access devices with coatings or additives must include the following:
(A) A description and material characterization of the coating or additive material, the purpose of the coating or additive, duration of effectiveness, and how and where the coating is applied.
(B) An identification in the labeling of any coatings or additives and a summary of the results of performance testing for any coating or material with special characteristics, such as decreased thrombus formation or antimicrobial properties.
(C) A Warning Statement in the labeling for potential allergic reactions including anaphylaxis if the coating or additive contains known allergens.
(D) Performance data must demonstrate efficacy of the coating or additive and the duration of effectiveness.
(viii) The following must be included for A-V shunt cannulae (with vessel tips):
(A) The device must comply with Special Controls in paragraphs (b)(1)(i) through (v) of this section with the exception of paragraphs (b)(1)(ii)(B), (b)(1)(ii)(C), (b)(1)(v)(B), and (b)(1)(v)(C), which do not apply.
(B) Labeling must include Warning Statements to address the potential for vascular access steal syndrome, arterial stenosis, arterial thrombosis, and hemorrhage including exsanguination given that the device accesses the arterial circulation.
(C) Clinical performance testing must demonstrate safe and effective use and capture any adverse events observed during clinical use.
(2) Class II (performance standards) for the nonimplanted blood access device.
(3) Class II (performance standards) for accessories for both the implanted and the nonimplanted blood access devices not listed in paragraph (b)(4) of this section.
(4) Class I for the cannula clamp, disconnect forceps, crimp plier, tube plier, crimp ring, and joint ring, accessories for both the implanted and nonimplanted blood access device. The devices subject to this paragraph (b)(4) are exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.