(144 days)
No
The device description focuses on mechanical components and operation, with no mention of AI, ML, or related concepts. The performance studies are bench tests, not studies evaluating algorithmic performance.
Yes
The device is intended for atherectomy of the peripheral vasculature, which is a medical procedure to remove plaque, indicating its therapeutic purpose.
No
Explanation: The device is an atherectomy system designed for excising plaque from peripheral vasculature, which is a therapeutic function rather than a diagnostic one. It removes tissue and does not provide diagnostic information.
No
The device description clearly outlines physical components like a catheter, cutter driver, rotating blade, and switches, indicating it is a hardware-based medical device.
Based on the provided information, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use is for "atherectomy of the peripheral vasculature," which is a surgical procedure performed in vivo (within the living body) to remove plaque from arteries.
- Device Description: The description details a mechanical system with a cutting assembly designed to physically remove tissue from within the body.
- Lack of IVD Characteristics: There is no mention of the device being used to examine specimens derived from the human body (like blood, urine, tissue samples) in vitro (outside the body) to provide information for diagnosis, monitoring, or screening.
IVD devices are used to perform tests on biological samples to gain information about a patient's health status. This device is a surgical tool used directly on the patient's anatomy.
N/A
Intended Use / Indications for Use
The SilverHawk and TurboHawk Peripheral Plaque Excision System are intended for use in atherectomy of the peripheral vasculature. The SilverHawk and TurboHawk Catheter is NOT intended for use in the coronary, carotid, iliac, or renal vasculature.
The TurboHawk Catheter (THS-LS-C, THS-LX-C) is indicated for use in conjunction with the SpiderFX Embolic Protection Device in the treatment of severely calcified lesions.
Product codes
MCW
Device Description
The SilverHawk and TurboHawk Peripheral Plaque Excision System consists of a Catheter and Cutter Driver, which are packaged separately, but shipped and used together during the plaque excision procedure. The catheter consists of a flexible shaft designed to track over a 0.014" guidewire. At the distal end of the catheter is a small cutting assembly comprised of a rotating inner blade contained within a tubular housing. The proximal end of the Catheter contains a connector and positioning lever designed to fit into a small, disposable, battery driven Cutter Driver, which powers the device.
The SilverHawk and TurboHawk Peripheral Plaque Excision System each have two switches: 1) the Cutter Driver main power switch and 2) the Catheter thumb switch. The Cutter Driver main power switch supplies power to the device when turned ON. When the thumb switch is fully forward (OFF), the cutting blade is closed and stored in the cutter housing with the motor off. This position is used during delivery of the device to the target lesion. Once the device has been positioned the Catheter thumb switch is pulled proximally to the ON position to activate the drive shaft and engage the cutter. Pulling back on the Catheter thumb switch simultaneously turns on the motor and causes the distal portion of the cutter housing to deflect, forcing the device against the target lesion. At the same time, this motion exposes the inner rotating blade, preparing the device for lesion treatment. With the blade spinning, the Catheter is slowly advanced across the lesion, "shaving" occlusive material from the artery. The excised tissue is captured and stored in the tip of the device. The cutting process is completed by advancing the Catheter thumb switch distally, deactivating the drive shaft, disengaging the cutter, and aligning the cutter and housing. The Catheter thumb switch is fully advanced distally to the OFF position in order to move the cutter forward within the tip and pack the excised plaque into the tip. This cutting sequence is repeated as necessary to achieve the desired degree of plaque excision.
The SilverHawk and TurboHawk Peripheral Plaque Excision System uses the following materials: stainless steel, platinum/iridium, carbide w/ 12% nickel binder, titanium, delrin, polyimide, PET lined tecothane, pebax, nylon, Teflon, tungsten carbide, ABS, PVC, silicone, Santoprene, polycarbonate, polypropylene and hydrophilic coating.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
peripheral vasculature
Indicated Patient Age Range
Not Found
Intended User / Care Setting
Not Found
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
To demonstrate substantial equivalence of the proposed SilverHawk and TurboHawk Peripheral Plaque Excision System to the predicate devices, the following bench testing was performed:
SilverHawk LS-M, MS-M, LX-M:
Changes Assessed: MEC Technology: Increased number of tip vent holes
Test Method Used to Evaluate Change: Device Inspections, Cutter Height, Cycle and Life, Carbide Edge Attachment, Repeated Cutter Spin Down and Packing, Coating Integrity, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Test, Device Tensile Test
SilverHawk SXL:
Changes Assessed: Tip Length increased, Addition of vent holes, Addition of a distal plunger reinforcement, Softer Durometer Tecothane, Smaller Flush Lumen
Test Method Used to Evaluate Change: Device Inspections, Cutter Height, Cycle and Life, Carbide Edge Attachment, Repeated Cutter Spin Down and Packing, Coating Integrity, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Test, Device Tensile Test, Flush Test, Tissue Removal Cycle Test
SilverHawk EXL:
Changes Assessed: Tip length increased and torque shaft length reduced, MEC Technology: Increased number of tip vent holes, Softer durometer Tecothane, Increase shaft adaptor inner diameter
Test Method Used to Evaluate Change: Device Inspections, Cutter Height, Cycle and Life, Carbide Edge Attachment, Repeated Cutter Spin Down and Packing, Coating Integrity, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Test, Device Tensile Test, Flush Test
SilverHawk SS+, ES+:
Changes Assessed: Modified asymmetrical housing with directional feature (SS+ crossing profile increased), Cutter mouth opening extended, MEC Technology: Increased number of tip vent holes, Addition of a torque transmission feature (ES+ only), Drive shaft coil winding, New torque shaft, Tip-assembly (SS+ only)
Test Method Used to Evaluate Change: Tissue Removal Cycle Test, Device Inspections, Cutter Height, Cycle and Life, Carbide Edge Attachment, Repeated Cutter Spin Down and Packing, Coating Integrity, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Test, Device Tensile Test, Flush Test, Tissue Removal Cycle Test
TurboHawk LS-M, LX-M:
Changes Assessed: New drive shaft, Improved "Urge" shape on the distal end of the torque shaft, MEC Technology: Increased number of tip vent holes
Test Method Used to Evaluate Change: Device Inspections, Cutter Height, Cycle and Life, Carbide Edge Attachment, Repeated Cutter Spin Down and Packing, Coating Integrity, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Tests, Device Tensile Tests, Flush Test, Tissue Removal Test, Tissue Flushing Tool Deployment
TurboHawk LS-C, LX-C:
Changes Assessed: Updated cutter breaker design to mimic the High Efficiency Cutter design used on the small vessel TurboHawk device (K103618, cleared on January 5, 2011). Reduced diameter of the distal tip
Test Method Used to Evaluate Change: Device Inspections, Cycle and Life, Repeated Cutter Spin Down and Packing, Simulated Use (trackability, rotational fatigue, cycling and cutting), Shaft Torque Test, Device Tensile Tests, Tissue Distal Flushing Tool (DFT) Deployment
TurboHawk SX-C, SS-C, SS-CL:
Changes Assessed: Change of slider cover component, addition of a compression force specification, Replacement of shaft adaptor washer with the shaft adaptor washer used to build the TurboHawk predicate
Test Method Used to Evaluate Change: Device Inspections, Driveshaft Compression
The results from these tests demonstrate that the technological and performance characteristics of the proposed SilverHawk and TurboHawk devices perform in a manner equivalent to the predicate devices currently on the market.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
K061063, K061188, K103618, K111723
Reference Device(s)
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 870.4875 Intraluminal artery stripper.
(a)
Identification. An intraluminal artery stripper is a device used to perform an endarterectomy (removal of plaque deposits from arterisclerotic arteries.)(b)
Classification. Class II (performance standards).
0
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
June 16, 2017
Medtronic Vascular, Inc. Mr. Aaron Hage Regulatory Affairs Specialist 3033 Campus Drive, N550 Plymouth, MN 55441
Re: K170191
Trade/Device Name: SilverHawk Peripheral Plaque Excision System, TurboHawk Peripheral Plaque Excision System Regulation Number: 21 CFR 870.4875 Regulation Name: Intraluminal Artery Stripper Regulatory Class: Class II Product Code: MCW Dated: May 18, 2017 Received: May 19, 2017
Dear Mr. Hage:
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
1
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 the quality systems (QS) 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
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely.
Nicole G. Ibrahim -S
for Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
2
Indications for Use
510(k) Number (if known) K170191
Device Name
SilverHawk Peripheral Plaque Excision System TurboHawk Peripheral Plaque Excision System
Indications for Use (Describe)
The SilverHawk and TurboHawk Peripheral Plaque Excision System are intended for use in atherectomy of the peripheral vasculature. The SilverHawk and TurboHawk Catheter is NOT intended for use in the coronary, carotid, iliac, or renal vasculature.
The TurboHawk Catheter (THS-LS-C, THS-LX-C) is indicated for use in conjunction with the SpiderFX Embolic Protection Device in the treatment of severely calcified lesions.
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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3
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SilverHawk ™ and TurboHawk™ Peripheral Plaque Excision System 510(k) Summary
510(k) Summary
SilverHawk™ Peripheral Plaque Excision System TurboHawk™ Peripheral Plaque Excision System
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of 21 C.F.R § 807.92.
Medtronic Vascular, Inc.
1 Submitter Information
Applicant
| Applicant | 3033 Campus Drive
Plymouth, MN 55441-2651
Tel: 763-398-7000
Fax: 763-591-3248 |
|----------------|----------------------------------------------------------------------------------------|
| Contact Person | Aaron Hage
Regulatory Affairs Specialist |
| Date Prepared | June 16, 2017 |
2 Subject Device
| Device Trade Name | SilverHawk™ Peripheral Plaque Excision System
TurboHawk™ Peripheral Plaque Excision System |
|----------------------|-----------------------------------------------------------------------------------------------|
| Device Common Name | Catheter, Peripheral, Atherectomy |
| Classification Name | Intraluminal Artery Stripper
21 CFR 870.4875, Product Code MCW |
| Classification Panel | Cardiovascular |
3 Predicate Devices
| Device Trade Name | SilverHawk™ Peripheral Plaque Excision System |
|---|---|
| 510(k) Numbers | K061063; K061188 |
| 510(k) Clearance Dates | May 18, 2006; October 23, 2006 |
| Device Trade Name | TurboHawk™ Peripheral Plaque Excision System |
| 510(k) Numbers | K103618; K111723 |
| 510(k) Clearance Dates | January 5, 2011; October 27, 2011 |
4
rHawk ™ and TurboHawk™ Peripheral Plaque Excision System 510(k) Summary
4 Reference Device
| Device Trade Name | HawkOne™ Directional Atherectomy System |
|---|---|
| 510(k) Numbers | K161361; K141801 |
| 510(k) Clearance Dates | October 14, 2016; October 16, 2014 |
5 Device Description
The SilverHawk and TurboHawk Peripheral Plaque Excision System consists of a Catheter and Cutter Driver, which are packaged separately, but shipped and used together during the plaque excision procedure. The catheter consists of a flexible shaft designed to track over a 0.014" guidewire. At the distal end of the catheter is a small cutting assembly comprised of a rotating inner blade contained within a tubular housing. The proximal end of the Catheter contains a connector and positioning lever designed to fit into a small, disposable, battery driven Cutter Driver, which powers the device.
The SilverHawk and TurboHawk Peripheral Plaque Excision System each have two switches: 1) the Cutter Driver main power switch and 2) the Catheter thumb switch. The Cutter Driver main power switch supplies power to the device when turned ON. When the thumb switch is fully forward (OFF), the cutting blade is closed and stored in the cutter housing with the motor off. This position is used during delivery of the device to the target lesion. Once the device has been positioned the Catheter thumb switch is pulled proximally to the ON position to activate the drive shaft and engage the cutter. Pulling back on the Catheter thumb switch simultaneously turns on the motor and causes the distal portion of the cutter housing to deflect, forcing the device against the target lesion. At the same time, this motion exposes the inner rotating blade, preparing the device for lesion treatment. With the blade spinning, the Catheter is slowly advanced across the lesion, "shaving" occlusive material from the artery. The excised tissue is captured and stored in the tip of the device. The cutting process is completed by advancing the Catheter thumb switch distally, deactivating the drive shaft, disengaging the cutter, and aligning the cutter and housing. The Catheter thumb switch is fully advanced distally to the OFF position in order to move the cutter forward within the tip and pack the excised plaque into the tip. This cutting sequence is repeated as necessary to achieve the desired degree of plaque excision.
The SilverHawk and TurboHawk Peripheral Plaque Excision System uses the following materials: stainless steel, platinum/iridium, carbide w/ 12% nickel binder, titanium, delrin, polyimide, PET lined tecothane, pebax, nylon, Teflon, tungsten carbide, ABS, PVC, silicone, Santoprene, polycarbonate, polypropylene and hydrophilic coating.
5
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SilverHawk TM and TurboHawk" Peripheral Plaque Excision System 510(k) Summary
6 Intended Use
The Intended Use of the proposed devices are the same as the predicate devices:
The SilverHawk and TurboHawk Peripheral Plaque Excision System are intended for treatment of de novo and restenotic atherosclerotic calcified and non-calcified lesions located in native peripheral arteries.
7 Indications for Use
The Indication for Use statement of the proposed devices are the same as the predicate devices:
The SilverHawk and TurboHawk Peripheral Plaque Excision System are intended for use in atherectomy of the peripheral vasculature. The SilverHawk and TurboHawk Catheter is NOT intended for use in the coronary, carotid, iliac, or renal vasculature.
The TurboHawk Catheter (THS-LS-C, THS-LX-C) is indicated for use in conjunction with the SpiderFX Embolic Protection Device in the treatment of severely calcified lesions.
The proposed change impacts the indications for use by removing contraindications that do not meet the FDA definition of a contraindication from the predicate devices. The removal of these contraindications does not change the intended use of the device. Additionally, removal of these contraindications would not significantly affect the safety and effectiveness of the device as these contraindications have not been demonstrated to present risks that clearly outweigh any possible benefits.
8 Comparison of Technological Characteristics
The proposed SilverHawk and TurboHawk Peripheral Plaque Excision System is substantially equivalent to the legally marketed SilverHawk and TurboHawk devices cleared by FDA under premarket notification: K111723, cleared October 27, 2011; K103618, cleared January 5, 2011; K061188, cleared October 23, 2006; K061063, cleared May 18, 2006.
The proposed and predicate devices share the following technological characteristics:
- Intended Use
- Fundamental scientific technology
- · Principles of Operation
- · Conditions of Use
- · Sterilization method, parameters, and sterility assurance level
Additionally, labeling, device design, device materials, packaging material, manufacturing process, manufacturing and sterilization site, of the proposed devices are similar to the legally marketed devices and would not significantly affect the safety or effectiveness of the devices.
6
SilverHawk ™ and TurboHawk™ Peripheral Plaque Excision System 510(k) Summary
Since the clearance of the predicate device, device component changes have been made to specific models of the SilverHawk and Turbo Hawk devices such as, increase in the number of tip vent holes (MEC Technology), softer durometer Tecothane, smaller flush lumen, increased tip length, new torque and drive shafts, and updated cutter breaker design. Please refer to Section 9 for details and related testing for all device changes.
9 Performance Testing Summary
To demonstrate substantial equivalence of the proposed SilverHawk and TurboHawk Peripheral Plaque Excision System to the predicate devices, the following bench testing was performed:
| Proposed
| Model | Changes Assessed | Test Method Use to Evaluate Change |
|---|---|---|
| SilverHawk | ||
| LS-M, MS-M, | ||
| LX-M | • MEC Technology: Increased | |
| number of tip vent holes | • Device Inspections | |
| • Cutter Height | ||
| • Cycle and Life | ||
| • Carbide Edge Attachment | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Coating Integrity | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Test | ||
| SilverHawk | ||
| SXL | • Tip Length increased | |
| • Addition of vent holes | ||
| • Addition of a distal plunger | ||
| reinforcement | ||
| • Softer Durometer Tecothane | ||
| • Smaller Flush Lumen | • Device Inspections | |
| • Cutter Height | ||
| • Cycle and Life | ||
| • Carbide Edge Attachment | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Coating Integrity | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Test | ||
| • Flush Test | ||
| • Tissue Removal Cycle Test | ||
| SilverHawk | ||
| EXL | • Tip length increased and torque | |
| shaft length reduced | ||
| • MEC Technology: Increased | ||
| number of tip vent holes | ||
| • Softer durometer Tecothane | ||
| • Increase shaft adaptor inner | ||
| diameter | • Device Inspections | |
| • Cutter Height | ||
| • Cycle and Life | ||
| • Carbide Edge Attachment | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Coating Integrity | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Test | ||
| • Flush Test | ||
| Proposed | ||
| Model | Changes Assessed | Test Method Use to Evaluate Change |
| SilverHawk | ||
| SS+, ES+ | • Modified asymmetrical housing | |
| with directional feature (SS+ | ||
| crossing profile increased) | ||
| • Cutter mouth opening extended | ||
| • MEC Technology: Increased | ||
| number of tip vent holes | ||
| • Addition of a torque transmission | ||
| feature (ES+ only) | ||
| • Drive shaft coil winding | ||
| • New torque shaft | ||
| • Tip-assembly (SS+ only) | • Tissue Removal Cycle Test | |
| • Device Inspections | ||
| • Cutter Height | ||
| • Cycle and Life | ||
| • Carbide Edge Attachment | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Coating Integrity | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Test | ||
| • Flush Test | ||
| • Tissue Removal Cycle Test | ||
| TurboHawk | ||
| LS-M, LX- | ||
| M | • New drive shaft | |
| • Improved "Urge" shape on the | ||
| distal end of the torque shaft | ||
| • MEC Technology: Increased | ||
| number of tip vent holes | • Device Inspections | |
| • Cutter Height | ||
| • Cycle and Life | ||
| • Carbide Edge Attachment | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Coating Integrity | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Tests | ||
| • Flush Test | ||
| • Tissue Removal Test | ||
| • Tissue Flushing Tool Deployment | ||
| TurboHawk | ||
| LS-C, LX- | ||
| C | • Updated cutter breaker design to | |
| mimic the High Efficiency Cutter | ||
| design used on the small vessel | ||
| TurboHawk device (K103618, | ||
| cleared on January 5, 2011). | ||
| • Reduced diameter of the distal tip | • Device Inspections | |
| • Cycle and Life | ||
| • Repeated Cutter Spin Down and Packing | ||
| • Simulated Use (trackability, rotational fatigue, | ||
| cycling and cutting) | ||
| • Shaft Torque Test | ||
| • Device Tensile Tests | ||
| • Tissue Distal Flushing Tool (DFT) | ||
| Deployment | ||
| TurboHawk | ||
| SX-C, SS- | ||
| C, SS-CL | • Change of slider cover | |
| component, addition of a | ||
| compression force specification | ||
| • Replacement of shaft adaptor | ||
| washer with the shaft adaptor | ||
| washer used to build the | ||
| TurboHawk predicate | • Device Inspections | |
| • Driveshaft Compression |
7
Medtronic
SilverHawk ™ and TurboHawk™ Peripheral Plaque Excision System 510(k) Summary
8
Image /page/8/Picture/0 description: The image shows the word "Medtronic" in a bold, sans-serif font. The color of the text is a medium blue. The letters are closely spaced, giving the word a solid, unified appearance. The overall impression is clean and professional.
SilverHawk ™ and TurboHawk™ Peripheral Plaque Excision System 510(k) Summary
The results from these tests demonstrate that the technological and performance characteristics of the proposed SilverHawk and TurboHawk devices perform in a manner equivalent to the predicate devices currently on the market.
10 Conclusions
Based on the intended use, indications for use, technological characteristics, performance Medtronic considers the proposed SilverHawk and TurboHawk Peripheral Plaque Excision Systems to be substantially equivalent to the currently marketed SilverHawk and TurboHawk Peripheral Plaque Excision System (K111723, K103618, K061188, K061063).