The Solex Intravascular Heat Exchange Catheter connected to the CoolGuard 3000/Thermogard XP Thermal Regulation System is indicated for use: In cardiac surgery patients to achieve and/or maintain normothermia during surgery and recovery/intensive care, and to induce, maintain and reverse mild hypothermia in neurosurgery and recovery/intensive care. Maximum use period: 48 hours.
Device Story
Solex Intravascular Heat Exchange Catheter is a 9.3F flexible, sterile, single-use catheter for superior vena cava placement via jugular vein. It connects to CoolGard 3000 or Thermogard XP console and Start-Up Kit (SUK). Device features polyurethane shaft and serpentine PET balloon. Principle of operation: closed-loop circulation of sterile saline through balloon to warm or cool blood via heat exchange; saline does not enter patient. Catheter includes five lumens: two for saline circulation, one guidewire/infusion lumen, and two additional infusion lumens. Blood-contact surfaces feature hydrophilic heparin coating. Used in OR and ICU by clinicians. Output is patient temperature regulation. Benefits include precise thermal management during surgery and recovery.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench performance testing (visual inspection, dimensional, life testing, flow/pressure, heat exchange, leakage, burst, flex/fatigue, tensile strength per ISO 10555-1:2013), biocompatibility testing (per ISO 10993-1:2009), and shelf-life testing.
Technological Characteristics
9.3F flexible catheter; polyurethane shaft; serpentine PET balloon; hydrophilic heparin coating (SurModics Applause). Five-lumen design. Sterilization: EO (SAL 10^-6). Operates as part of a closed-loop thermal regulation system using circulating saline. Complies with ISO 10555-1:2013 and ISO 10993-1:2009.
Indications for Use
Indicated for cardiac surgery patients to achieve/maintain normothermia during surgery and recovery/intensive care, and for neurosurgery patients to induce, maintain, and reverse mild hypothermia during surgery and recovery/intensive care. Max use 48 hours.
Regulatory Classification
Identification
A thermal regulating system is an external system consisting of a device that is placed in contact with the patient and a temperature controller for the device. The system is used to regulate patient temperature.
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
October 3, 2014
ZOLL Circulation, Inc. Ms. Susan Noriega Director of Regulatory Affairs 2000 Ringwood Avenue San Jose, California 95131
Re: K141139
> Trade/Device Name: Solex Intravascular Heat Exchange Catheter Regulation Number: 21 CFR 870.5900 Regulation Name: Thermal Regulating System Regulatory Class: Class II Product Code: NCX Dated: September 2, 2014 Received: September 4, 2014
Dear Ms. Susan Noriega,
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. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you; however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
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the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
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Sincerely yours,
# Carlos L. Pena -SA
Carlos L. Peña, PhD, MS Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if known) K141139
Device Name
Solex Intravascular Heat Exchange Catheter
#### Indications for Use (Describe)
The Solex Intravascular Heat Exchange Catheter connected to the CoolGuard 3000/Thermogard XP Thermal Regulation System is indicated for use:
In cardiac surgery patients to achieve and/or maintain normothermia during surgery and recovery/intensive care, and to induce, maintain and reverse mild hypothermia in neurosurgery and recovery/intensive care.
Maximum use period: 48 hours.
Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
#### PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON A SEPARATE PAGE IF NEEDED.
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Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
## Carlos L. Pena - S
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t
## PREMARKET NOTIFICATION 510(K) SUMMARY
| Date Prepared: | April 23, 2014 |
|-----------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Submitter: | ZOLL Circulation, Inc. |
| Address: | 2000 Ringwood Avenue<br>San Jose, CA 95131 |
| Phone: | 408-541-2140 |
| Fax: | 408-541-1030 |
| Contact Person: | Susan Noriega, Director Regulatory Affairs |
| Trade Name/Proprietary<br>Name: | Solex® Intravascular Heat Exchange Catheter |
| Common Name: | Central Venous Catheter (short term) and Thermal Regulating<br>System |
| Classification/Name: | Class II; System, Hypothermia, Intravenous, Cooling |
| Regulation: | 21 CFR 870.5900, Thermal Regulatory System |
| Product Code: | NCX |
| Legally marketed devices to<br>which substantial<br>equivalence is claimed: | ZOLL Solex Catheter, Kit Model 510(k) K081936<br>ZOLL Cool Line Catheter Kit Model CL-2295A, Icy Catheter Ki<br>Model IC-3893A, Quattro Catheter Kit Model IC-4593 510(k)<br>K101987 |
## I. Device Description:
The ZOLL Solex Intravascular Heat Exchange Catheter (Solex Catheter) is a sterile, single use 9.3F flexible catheter designed for placement in the superior vena cava from an insertion site in the jugular vein. The Solex Catheter is connected to a single use, disposable CoolGard 3000" or Thermogard XP® Start-Up Kit (SUK) and the CoolGard 3000" or Thermogard XP® Console, all of which comprise the ZOLL Intravascular Heat Exchange System. The Start-Up Kit (SUK) and the CoolGard 3000 or Thermogard XP Console are supplied separately. The ZOLL Heat Exchange System is also designed for use with an off-the-shelf temperature probe. The Solex Catheter is comprised of a polyurethane shaft and a serpentine shaped PET balloon at the distal end. The blood contact surfaces of the catheter incorporate a hydrophilic heparin coating as an anti-thrombogenic agent.
The catheter has five lumens, two of which when connected to the Start-Up Kit, are used to circulate sterile saline in a closed loop circuit for heat exchange with the blood in the central venous system. Heated or chilled saline is pumped through the heat exchange lumens, inflating the diameter of the PET balloon that interfaces with the patient's blood system to warm or cool circulating blood. The inflow/outflow lumens form a closed-loop system through which the heated or chilled saline circulates. The heated or chilled saline is not infused into the patient. Additional lumens of the Solex Catheter consist of a 0.032" guidewire compatible lumen that can also be used as a primary infusion lumen, and two additional infusion lumens within the catheter shaft.
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## II. Indications for Use:
The intended use / indications for use of the modified Solex Catheter is identical to that of the 510(k) cleared Solex Catheter (K081936).
The Solex® Intravascular Heat Exchange Catheter connected to the CoolGard 3000®/Thermogard XP® Thermal Regulation System, is indicated for use:
- In cardiac surgery patients to achieve and or maintain normothermia during surgery and . recovery/intensive care, and
- To induce, maintain and reverse mild hypothermia in neurosurgery patients in surgery and recovery/intensive care.
Maximum use period: 48 hours
## III. Technological Characteristics of the Device Compared to the Predicate Device:
The modified Solex Catheter is substantially equivalent to the 510(k) cleared Solex Catheter (K081936), as well as the other cleared ZOLL Catheters (K101987), with regard to intended use / indications for use, technological characteristics, and principles of operation. Table 1 provides a comparison of the similarities and differences in technological characteristics between the modified Solex Catheter, the cleared Solex Catheter, and other cleared ZOLL Catheters (Cool Line, ICY and Quattro).
| | ZOLL Intravascular Heat Exchange Catheters | | |
|--------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Feature | SUBJECT DEVICE<br>Modified Solex Catheter<br>with SurModics Applause<br>Heparin Coating | PREDICATE DEVICE<br>Solex Catheter with<br>Edwards LifeSciences<br>DuraFlo Heparin Coating | ADDITIONAL<br>PREDICATE DEVICES<br>Cool Line, ICY and Quattro<br>Catheters |
| 510(k)<br>Number | TBD | K081936 | K101987 |
| Device | Solex Intravascular Heat<br>Exchange Catheter -<br>Model SL-2593 | Solex Intravascular Heat<br>Exchange Catheter -<br>Model SL-2593 | Cool Line Catheter Kit-<br>Model CL-2295A,<br>Icy Catheter Kit -<br>Model IC-3893A,<br>Quattro Catheter Kit -<br>Model IC-4593 |
| Indications<br>for Use | The Solex Catheter<br>connected to the CoolGard<br>3000/Thermogard XP<br>Thermal Regulation System<br>is indicated for use:<br>●<br>In cardiac surgery<br>patients to achieve<br>and/or maintain<br>normothermia during<br>surgery and | The Solex Catheter<br>connected to the CoolGard<br>3000/Thermogard XP<br>Thermal Regulation System<br>is indicated for use:<br>●<br>In cardiac surgery<br>patients to achieve<br>and/or maintain<br>normothermia during<br>surgery and | The Quattro Catheter and ICY<br>Catheter connected to a ZOLL<br>Thermal Regulation System are<br>indicated for use:<br>●<br>In cardiac surgery adult<br>patients to achieve and/or<br>maintain normothermia<br>during surgery and<br>recovery/intensive care, and<br>●<br>To induce, maintain and |
| | recovery/intensive care,<br>and<br>●<br>To induce, maintain and<br>reverse mild | recovery/intensive care,<br>and<br>●<br>To induce, maintain and<br>reverse mild | reverse mild hypothermia in<br>neurosurgery patients in<br>surgery and<br>recovery/intensive care. |
| | ZOLL Intravascular Heat Exchange Catheters | | |
| Feature | SUBJECT DEVICE<br>Modified Solex Catheter<br>with SurModics Applause<br>Heparin Coating | PREDICATE DEVICE<br>Solex Catheter with<br>Edwards LifeSciences<br>DuraFlo Heparin Coating | ADDITIONAL<br>PREDICATE DEVICES<br>Cool Line, ICY and Quattro<br>Catheters |
| | hypothermia in<br>neurosurgery patients in<br>surgery and<br>recovery/intensive care.<br>Maximum use period: 48<br>hours. | hypothermia in<br>neurosurgery patients in<br>surgery and<br>recovery/intensive care.<br>Maximum use period: 48<br>hours. | The Cool Line Catheter when<br>used with the ZOLL Thermal<br>Regulation System is indicated<br>for use in fever reduction, as an<br>adjunct to antipyretic therapy, in<br>adult patients with cerebral<br>infarction and intracerebral<br>hemorrhage who require access to<br>the central venous circulation and<br>who are intubated and sedated. ** |
| Heparin<br>Coating | SurModics Applause<br>Heparin Coating | Edwards LifeSciences<br>Duraflo Heparin Coating | SurModics Applause Heparin<br>Coating |
| Max. Use<br>Period | 2 days | 2 days | 7 days - Cool Line<br>4 days - ICY<br>4 days - Quattro |
| Number of<br>lumens | 5 lumens:<br>2 infusion<br>1 guidewire (also infusion)<br>1 inflow<br>1 outflow | 5 lumens:<br>2 infusion<br>1 guidewire (also infusion)<br>1 inflow<br>1 outflow | 5 lumens:<br>2 infusion<br>1 guidewire (also infusion)<br>1 inflow<br>1 outflow |
| Catheter<br>working<br>length<br>(maximum) | 26cm | 26cm | 22 cm - Cool Line<br>39 cm - ICY<br>48 cm - Quattro |
| Heat<br>exchange<br>balloons | 1 (serpentine) | 1 (serpentine) | 2 (straight/coaxial) Cool Line<br>3 (straight/coaxial) ICY<br>4 (straight/coaxial) Quattro |
| Cross<br>Sectional<br>Area<br>(approx.<br>inflated<br>outer<br>diameter) | 54mm² (12.2 mm OD) | 54mm² (12.2 mm OD) | Cool Line: 20mm² (5 mm)<br>ICY / Quattro: 50mm² (8 mm) |
| Shaft<br>diameter | 9.3 Fr | 9.3 Fr | 9.3 Fr |
| Insertion<br>Site | Jugular Vein | Jugular Vein | Quattro - Femoral Vein<br>ICY - Femoral Vein<br>Cool Line - Femoral, Jugular,<br>Subclavian Veins |
| Materials | Shaft: Polyurethane<br>Heat Exchange Balloon: PET | Shaft: Polyurethane<br>Heat Exchange Balloon: PET | Shaft: Polyurethane<br>Heat Exchange Balloon: PET/<br>Polyurethane |
| Feature | ZOLL Intravascular Heat Exchange Catheters | | |
| | SUBJECT DEVICE<br>Modified Solex Catheter<br>with SurModics Applause<br>Heparin Coating | PREDICATE DEVICE<br>Solex Catheter with<br>Edwards LifeSciences<br>DuraFlo Heparin Coating | ADDITIONAL<br>PREDICATE DEVICES<br>Cool Line, ICY and Quattro<br>Catheters |
| Sterilization<br>method and<br>SAL | EO, SAL 10-6 | EO, SAL 10-6 | EO, SAL 10-6 |
#### Table 1. Comparison of Proposed Solex Catheter with Predicates
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** The Indication for Use for the Cool Line Catheter also includes the following warning:
#### Warning - Fever Reduction
The safety of this device has not been demonstrated for fever reduction in patients presenting with subarachnoid hemorrhage or primary traumatic brain injury. The safety and effectiveness of this device was examined in a randomized controlled trial of 296 patients. The mortality results reported in this trial, for the four patient cohorts enrolled, are presented in the table below (CI cerebral infarction, ICH - intracerebral hemorrhage, PTBI - primary traumatic brain injury, SAH - subarachnoid hemorrhage).
| | Cool Line | | | Control | | | p* |
|------|-----------|----|------|---------|----|------|------|
| | n | N | % | n | N | % | |
| CI | 3 | 16 | 18.8 | 3 | 14 | 21.4 | 0.74 |
| ICH | 8 | 33 | 24.2 | 7 | 27 | 25.9 | 1.00 |
| PTBI | 10 | 44 | 22.7 | 4 | 38 | 10.5 | 0.24 |
| SAH | 13 | 61 | 21.3 | 7 | 63 | 11.1 | 0.15 |
Mortality by Diagnosis (ITT analysis)
*Fischer's exact test
For more details on the clinical trial results please refer to Physician's Manual - "Normothermia for the Neuro-critically III stroke patient" #101416-001.
#### IV. Summary of the Nonclinical Tests Performed:
Nonclinical testing was performed to ensure that the modified ZOLL Solex Catheter meets its predetermined design and performance specifications and that the product is substantially equivalent to the predicate devices (K081936 and K101987).
The modified Solex Catheter is identical to the 510(k) cleared Solex Catheter in terms of intended use/indications for use and principles of operation, and has equivalent technological characteristics. Minor design modifications have been incorporated into the catheter design to improve manufacturability of the device. Nonclinical testing completed includes Bench Performance, Biocompatibility, and Shelf Life Testing to support the labeled expiration date. The non-clinical test results demonstrate that the modified Solex Catheter continues to meet product design specifications.
#### Bench Performance
Bench performance testing of the modified Solex Catheter was performed to verify that product design specifications were met at T=0 and after real time aging to support the labeled expiration date. Testing completed includes the following: catheter visual inspection, dimensional measurements, life testing, flow rate and pressure monitoring, heat exchange testing, air/liquid leakage testing, burst testing, flex and fatigue testing, and tensile strength testing. Where applicable, testing was performed in accordance with the catheter performance requirements of
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ISO 10555-1:2013. The results of the design verification testing demonstrate that the modified Solex Catheter meets its design performance specifications at T=0 and at its labeled expiration date.
## Biocompatibility
The modified Solex Catheter is fabricated with similar materials and components as the predicate Solex Catheter and other cleared ZOLL Catheters. In addition, the Solex Catheter utilizes the identical SurModics Heparin Coating as the predicate ZOLL Cool Line, ICY and Quattro Catheters 510(k) cleared in K101987, using the same material substrates. According to ISO 10993-1:2009, Biological Evaluation of Medical Devices – Part 1: Guidance on Selection of Tests, the Solex Catheter is categorized as an "external communicating, blood contact device with prolonged exposure (>24 hours to 30 days)". Based on this categorization, the Solex Catheter was tested for Cytotoxicity, Sensitization, Acute Systemic Toxicity, Subacute Toxicity, Genotoxicity, Implantation, and Hemocompatibility. The results of the testing demonstrate that the Solex Catheter is biocompatible for its intended use.
## V. Summary of Clinical Tests Performed:
Clinical evaluations were not performed for the modified Solex Catheter and were not necessary to demonstrate substantial equivalence of the modified Solex Catheter to the predicate devices (K081936 and K101987).
## VI. Substantial Equivalence:
The modified Solex Catheter has the same intended use / indications for use as the 510(k) cleared Solex Catheter (K081936). The modified Solex Catheter utilizes the identical SurModics Applause Heparin Coating as other currently cleared ZOLL Catheters (Cool Line, ICY and Quattro - K101987) and has similar technological characteristics as the currently cleared Solex Catheter. The results of the bench performance, biocompatibility and shelf life testing demonstrate that the modifications do not affect the performance or function of the device. The minor differences in the design between the modified and cleared Solex Catheters, as well as other ZOLL predicate Catheters, do not raise any new types of safety or effectiveness questions as confirmed by design verification testing. Therefore, the modified Solex Catheter is substantially equivalent to the previously cleared predicate devices.
## VII. Conclusions:
ZOLL concludes that based on the results of the bench performance, biocompatibility and shelf life testing, that the Solex Catheter is substantially equivalent to the predicate devices.
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1. Search: exact and fuzzy
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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.
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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.