(63 days)
MLA-900C, MLA-1000C
No
The summary describes a photo-optical instrument for coagulation testing based on measuring clotting time. There is no mention of AI, ML, or any related concepts in the intended use, device description, or performance studies. The analysis relies on standard photo-optical principles and statistical metrics like correlation and precision.
No
This device is an in-vitro diagnostic instrument used for coagulation testing, not for direct treatment or diagnosis of patients.
Yes
The ThromboScreen® 200 is explicitly described as a "photo-optical instrument used for the performance of in-vitro diagnostic coagulation testing" and "in-vitro diagnostic clotting procedures." It measures the time for plasma specimens to clot to diagnose various coagulation conditions.
No
The device description explicitly states it is a "photo-optical instrument" with a LASER light source, incubator block, and measuring positions, indicating it is a hardware device.
Yes, this device is an IVD (In Vitro Diagnostic).
The "Intended Use / Indications for Use" section explicitly states: "The Pacific Hemostasis ThromboScreen® 200 is a photo-optical instrument used for the performance of in-vitro diagnostic coagulation testing of citrated plasma specimens in the clinical laboratory."
The "Device Description" also reinforces this by stating: "The ThromboScreen® 200 (TS200) is a photo-optical instrument used for the performance of in-vitro diagnostic clotting procedures in the clinical laboratory."
These statements clearly indicate that the device is intended for use in testing biological samples (citrated plasma specimens) outside of the body to diagnose or monitor medical conditions related to blood coagulation. This aligns with the definition of an In Vitro Diagnostic device.
N/A
Intended Use / Indications for Use
The Pacific Hemostasis ThromboScreen® 200 is a photo-optical instrument used for the performance of in-vitro diagnostic coagulation testing of citrated plasma specimens in the clinical laboratory. Coagulation testing capabilities of the device include routine clotting tests such as Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), Fibrinogen (Clauss and Derived methods), as well as PT and APTT-based factor assays.
Product codes
KQG
Device Description
The ThromboScreen® 200 (TS200) is a photo-optical instrument used for the performance of invitro diagnostic clotting procedures in the clinical laboratory. The instrument utilizes photo-optical principles to measure and record the time required for patient plasma specimens to clot. The ThromboScreen® 200 light source is provided by a 470 nm LASER. The incubator block is temperature regulated to 36.5 - 37.5℃ and contains two measuring positions, three reagent and 12 cuvette prewarming positions. A detailed description of the device, including an explanation of how it functions, is described in the ThromboScreen® 200 Operator's Manual, section 1, Introduction.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
Not Found
Indicated Patient Age Range
Not Found
Intended User / Care Setting
clinical laboratory
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)
Comparison testing was performed in-house and at two external testing laboratories using Pacific Hemostasis (PH) brand reagents. Specimens were evaluated from apparently healthy individuals and from patients with different pathological conditions which are expected to affect the results for a particular assay.
The studies compared the ThromboScreen® 200 (TS200) to the MLA-900C and the MLA-1000C.
Results of the comparison studies:
- Prothrombin Time (PT) (Thromboplastin DS, seconds): Correlation Coefficient, r of 0.98 and 0.99 for Site #1 (137 samples) and Site #2 (141 samples) respectively.
- Prothrombin Time (Thromboplastin DS, INR): Correlation Coefficient, r of 0.98 and 0.99 for Site #1 (137 samples) and Site #2 (141 samples) respectively.
- Activated Partial Thromboplastin Time (APTT-LS reagent, seconds): Correlation Coefficient, r of 0.98 and 0.97 for Site #1 (104 samples) and Site #2 (121 samples) respectively.
- Clauss Fibrinogen (PH Thrombin reagent, mg/dL): Correlation Coefficient, r of 0.99, 0.98, and 0.98 for Site #1 (20 samples), Site #2 (20 samples), and PH (49 samples) respectively.
- Derived Fibrinogen (Thromboplastin DS, mg/dL): Correlation Coefficient, r of 0.99 and 0.99 for Site #1 (19 samples) and Site #2 (47 samples) respectively.
- Factor VIII (APTT-LS, % activity): Correlation Coefficient, r of 0.97 for PH (49 samples).
- Factor V (Thromboplastin DS, % activity): Correlation Coefficient, r of 0.97 for PH (45 samples).
Summary of Within-run Precision Studies (%CV):
- PT: Low (not tested), Normal (1.9, 2.0), High (2.3, 5.7) for TS200; Normal (1.1, 1.5), High (2.8, 2.0) for MLA-900C/1000C.
- APTT: Low (not tested), Normal (5.1, 4.7), High (1.6, 2.3) for TS200; Normal (1.4, 3.3), High (2.9, 2.2) for MLA-900C/1000C.
- Clauss Fib.: Low (6.7), Normal (6.8), High (5.0) for TS200; Low (2.0), Normal (2.1), High (2.8) for MLA-900C/1000C (Testing at PH only).
- Derived Fib.: Low (5.6), Normal (2.5), High (4.1) for TS200; Low (2.2), Normal (3.4), High (2.1) for MLA-900C/1000C (Testing at PH only).
- Factor V: Low (2.3), Normal (2.5) for TS200; Low (4.0), Normal (2.0) for MLA-900C/1000C (Testing at PH only).
- Factor VIII: Low (9.6), Normal (10.2) for TS200; Low (5.3), Normal (4.7) for MLA-900C/1000C (Testing at PH only).
Summary of PT & APTT Between-run Precision Testing (Testing performed at PH only):
- Prothrombin Time Testing (Normal Plasma): TS200 mean 12.9, SD 0.22, CV 1.7%, n 39; MLA mean 12.8, SD 0.18, CV 1.4%, n 40.
- Prothrombin Time Testing (Abnormal Plasma): TS200 mean 45.1, SD 2.68, CV 5.9%, n 38; MLA mean 40.0, SD 3.24, CV 8.1%, n 40.
- Activated Partial Thromboplastin Time Testing (Normal Plasma): TS200 mean 35.4, SD 1.28, CV 3.6%, n 39; MLA mean 29.7, SD 1.27, CV 4.3%, n 40.
- Activated Partial Thromboplastin Time Testing (Abnormal Plasma): TS200 mean 69.5, SD 1.96, CV 2.8%, n 40; MLA mean 59.0, SD 4.41, CV 7.5%, n 40.
Conclusion: The similar intended use, technological characteristics and performance data support the claim that the ThromboScreen® 200 is substantially equivalent to the MLA-900C and the MLA-1000C.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Correlation Coefficient, r, and Coefficient of Variation (%CV).
Predicate Device(s)
MLA-900C &1000C, #K884863, #K894052
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 864.5400 Coagulation instrument.
(a)
Identification. A coagulation instrument is an automated or semiautomated device used to determine the onset of clot formation for in vitro coagulation studies.(b)
Classification. Class II (special controls). A fibrometer or coagulation timer intended for use with a coagulation instrument is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 864.9.
0
JUN 21 1999
Premarket Notification 510(K) Summary ThromboScreen® 200
| 10.0 | PREMARKET NOTIFICATION 510(K) SUMMARY |
|---|---|
| Applicant: | Laura A. Worfolk, Ph.D. |
| Pacific Hemostasis | |
| 11515 Vanstory Drive | |
| Huntersville, NC 28078 | |
| 704-875-0494 | |
| Fax # 704-875-2092 | |
| Contact: | Larry Kopyta, Manager FDA Programs |
| 704-875-0494 | |
| Fax # 704-875-2092 | |
| Date: | April 16, 1999 |
| Trade Name: | Pacific Hemostasis ThromboScreen® 200 |
| Common Name: | Manual Coagulation Instrument |
| Classification Name: | Instrument, Coagulation (per 21 CFR section 864.5400) |
| Equivalent Devices: | MLA-900C &1000C, #K884863, #K894052 |
Description of the ThromboScreen® 200
The ThromboScreen® 200 (TS200) is a photo-optical instrument used for the performance of invitro diagnostic clotting procedures in the clinical laboratory. The instrument utilizes photo-optical principles to measure and record the time required for patient plasma specimens to clot. The ThromboScreen® 200 light source is provided by a 470 nm LASER. The incubator block is temperature regulated to 36.5 - 37.5℃ and contains two measuring positions, three reagent and 12 cuvette prewarming positions. A detailed description of the device, including an explanation of how it functions, is described in the ThromboScreen® 200 Operator's Manual, section 1, Introduction.
Intended Use of the ThromboScreen® 200
The Pacific Hemostasis ThromboScreen® 200 is a photo-optical instrument used for the performance of in-vitro diagnostic coagulation testing of citrated plasma specimens in the clinical laboratory. Coagulation testing capabilities of the device include routine clotting tests such as Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), Fibrinogen (Clauss and Derived methods), as well as PT and APTT-based factor assays.
1
Summary of Substantial Equivalence Comparisons
The ThromboScreen® 200 (TS200) was compared to the MLA-900C and the MLA-1000C (K884863 & K894052, respectively). All three instruments have a similar intended use: for in-vitro diagnostic coagulation testing in the clinical laboratory. Further, the proposed device and the predicate devices have the same measurement system for clotting assays: photo-optical clot detection systems.
The TS200 is a "manual" coagulation instrument, in that the user must pipet both sample and test reagent. In contrast, the MLA-900C is semi-automated, and the MLA-1000C is a fully-automated instrument. The MLA-900C requires manual sample addition, but has an automatic pipet for reagent addition. The MLA-1000C has an automatic pipetting system, which adds both sample and test reagent. The light source for the MLA instruments is a Halogen lamp and the wavelength is set at 550 nm (for clotting assays). In contrast, the TS200 utilizes an LASER optic at 470 nm. Although differences in light source and wavelength exist, all instruments have been optimized for their light source/filter combinations. The performance data generated support this statement (Tables 1-3).
Comparison testing was performed in-house and at two external testing laboratories using Pacific Hemostasis (PH) brand reagents. Specimens were evaluated from apparently healthy individuals and from patients with different pathological conditions which are expected to affect the results for a particular assay. Table 1 summarizes the results of the comparison studies between the proposed and the predicate devices.
| Test
(Reagent, Unit) | Site & Sample # | Correlation
Coefficient, r | Regression Equation |
|----------------------------------------------------------------------------|-----------------------------------------|-------------------------------|------------------------------------------------------------------|
| Prothrombin Time (PT)
(Thromboplastin DS,
seconds) | Site #1 - 137
Site #2 - 141 | 0.98
0.99 | y = 1.078x + 0.309
y = 1.076x - 0.526 |
| Prothrombin Time
(Thromboplastin DS,
INR) | Site #1 - 137
Site #2 - 141 | 0.98
0.99 | y = 0.899x + 0.186
y = 1.0754x - 0.1063 |
| Activated Partial
Thromboplastin Time*
(APTT-LS reagent,
seconds) | Site #1 - 104
Site #2 - 121 | 0.98
0.97 | y = 1.328x - 0.305
y = 1.072x + 4.351 |
| Clauss Fibrinogen
(PH Thrombin reagent,
mg/dL) | Site #1 - 20
Site #2 - 20
PH - 49 | 0.99
0.98
0.98 | y = 1.059x - 11.526
y = 1.038x - 14.293
y = 1.001x - 9.257 |
| Derived Fibrinogen
(Thromboplastin DS,
mg/dL) | Site #1 - 19
Site #2 - 47 | 0.99
0.99 | y = 0.775x + 96.12
y = 0.896x + 23.02 |
| Factor VIII
(APTT-LS, % activity) | PH - 49 | 0.97 | y = 0.844x + 14.07 |
| Factor V,
(Thromboplastin DS, %
activity) | PH - 45 | 0.97 | y = 1.071x + 2.01 |
Table 1. Summary of Method Comparison Studies Between the TS200 & the MLA-900C/1000C
The predicate device used at site #1 & PH was the MLA-1000C, at site # 2 , the MLA-900C. *= APTT
2
The following coefficients of variation were obtained for within-run and between-run precision studies:
| Test | Low | TS200 | MLA-900C/1000C | |||
|---|---|---|---|---|---|---|
| Normal | High | Low | Normal | High | ||
| PT | 1.9 | 2.3 | 1.1 | 2.8 | ||
| Site 1 | ||||||
| Site 2 | 2.0 | 5.7 | 1.5 | 2.0 | ||
| PH | 2.8 | 3.2 | 1.0 | 2.8 | ||
| APTT | ||||||
| Site 1 | 5.1 | 1.6 | 1.4 | 2.9 | ||
| Site 2 | 4.7 | 2.3 | 3.3 | 2.2 | ||
| PH | 3.3 | 2.5 | 0.9 | 1.2 | ||
| Clauss Fib.* | 6.7 | 6.8 | 5.0 | 2.0 | 2.1 | 2.8 |
| Derived Fib.* | 5.6 | 2.5 | 4.1 | 2.2 | 3.4 | 2.1 |
| Factor V* | 2.3 | 2.5 | 4.0 | 2.0 | ||
| Factor VIII* | 9.6 | 10.2 | 5.3 | 4.7 |
Table 2. Summary of Within-run Precision Studies, %CV
*Testing at PH only. (Shaded areas, no testing performed. Only clinically significant ranges tested.)
Table 3. Summary of PT & APTT Between-run Precision Testing
| Prothrombin Time Testing | | | | Activated Partial Thromboplastin
Time Testing | | | | |
|--------------------------|---------------|------|-----------------|--------------------------------------------------|---------------|------|-----------------|------|
| | Normal Plasma | | Abnormal Plasma | | Normal Plasma | | Abnormal Plasma | |
| | TS200 | MLA | TS200 | MLA | TS200 | MLA | TS200 | MLA |
| mean | 12.9 | 12.8 | 45.1 | 40.0 | 35.4 | 29.7 | 69.5 | 59.0 |
| SD | 0.22 | 0.18 | 2.68 | 3.24 | 1.28 | 1.27 | 1.96 | 4.41 |
| CV | 1.7% | 1.4% | 5.9% | 8.1% | 3.6% | 4.3% | 2.8% | 7.5% |
| n | 39 | 40 | 38 | 40 | 39 | 40 | 40 | 40 |
Testing performed at PH only.
In conclusion, the similar intended use, technological characteristics and performance data support the claim that the ThromboScreen® 200 is substantially equivalent to the MLA-900C and the MLA-1000C.
4
3
PREMARKET NOTIFICATION
TRUTHFUL AND ACCURATE STATEMENT [As required by 21 CFR 807.87(j)]
I certify that, in my capacity as a Research Scientist at Pacific Hemostasis, a Fisher Scientific Company, I believe to the best of my knowledge, that all data and information submitted in the premarket notification are truthful and accurate and that no material fact has been omitted,
이 대한민국 대학교 동문학교 대학교 대학교 대학교 대학교 대학
មាន ១០
德国际网址 利来国际官网 利来
Laura A. Worfolk
Laura A. Worfolk, Ph.D.
K991321
*(Premarket Notification [510(k)] Number)
4
Image /page/4/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized symbol that resembles an abstract caduceus or a series of interconnected, flowing lines, possibly representing people.
JUN 21 1999
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
Laura A. Worfolk, Ph.D. Research Scientist Pacific Hemostasis 11515 Vanstory Drive Suite 125 Huntersville, North Carolina 28078-8144
Re: K991321
Trade Name: Pacific Hemostasis ThromboScreen 200 (TS200) Regulatory Class: II Product Code: KQG Dated: June 4, 1999 Received: June 7, 1999
Dear Dr. Worfolk:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we 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). 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.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (OS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
5
Page 2
Under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), this device may require a CLIA complexity categorization. To determine if it does, you should contact the Centers for Disease Control and Prevention (CDC) at (770) 488-7655.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled. "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Steven Sutman
Steven I. Gutman, M.D, M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
6
Page of of
510(k) Number (if known): 4991321
Device Name:__________________________________________________________________________________________________________________________________________________________________
Indications For Use:
The Pacific Hemostasis ThromboScreen® 200 is a photo-optical instrument used for the performance of in-vitro diagnostic coagulation testing in the clinical laboratory. Coagulation testing capabilities of the device include routine clotting tests such as Prothrombin Time (PT), Activated Partial Thromboplastin Time (APTT), Fibrinogen (Clauss and Derived methods), as well as PT and APT-based factor assays.
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Peter E. Maderi
(Division Sign-Off)
Division of Clinical Laboratory Devices
510(k) Number K99321
Prescription Use V (Per 21 CFR 801.109)
OR
Over-The-Counter Use__________________________________________________________________________________________________________________________________________________________
(Optional Format 1-2-96)