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510(k) Data Aggregation
(225 days)
IMT LOUPE-COLPOSCOPE
Approval is sought for this device with the intent of marketing it . It is truly felt that it is a very safe instrument for attendants to use for evaluations and aid to certain treatments.
portable and self contained, since it has its own light source, green filter and variable magnification.
The provided text is a summary of a 510(k) premarket notification for a device called "THE LOUPE-COLPOSCOPE" from 1997. It describes a historical medical device approval process and does not contain the detailed, quantitative information typically found in modern AI/ML device evaluations. Therefore, I cannot fully populate the requested table and sections with the specific metrics like sensitivity, specificity, or detailed sample sizes for training and testing as these concepts were not applied in the same way or documented with the same rigor for this type of device at that time.
However, I can extract the available information and indicate where specifics are not provided in the original text.
Acceptance Criteria and Reported Device Performance
Acceptance Criteria | Reported Device Performance |
---|---|
Equal in performance and accuracy to standard operating microscopes. | "equal in performance and accuracy to standard operating microscopes" |
Safe for attendants to use for evaluations and aid to certain treatments. | "truly felt that it is a very safe instrument for attendants to use" |
No adverse effects to patients. | "There were no adverse effects to patients when this instrument was used to examine them or assist in treatment procedures." |
Portability and self-contained (own light source, green filter, variable magnification) | Device is described as having these features and providing "distinct advantages over existing instruments" due to them. |
Study Details
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Sample size used for the test set and the data provenance:
- Sample size: "first sixty-one patients" for the "blinded control study." The "remainder of the case results" were also compared, but no specific number is given for this subsequent phase.
- Data provenance: Not explicitly stated, but implies clinical data collected during the study. Country of origin not mentioned; presumed to be where the study was conducted. Prospective data collection is implied from the description of "testing done on this instrument" and "blinded control study."
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Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
- Number of experts: Not explicitly stated for specific roles. However, it mentions "operator colposcopic diagnoses," "Papanicolaou smear diagnoses," and "histological diagnoses." This implies multiple clinicians and pathologists were involved.
- Qualifications of experts: Not specified beyond their roles (e.g., "operator," "pathologist").
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Adjudication method for the test set:
- The study used a "blinded control study." Operators of the Loupe and the Zeiss OM-1 were blinded when making colposcopic diagnoses. The "patient's colposcopic findings were also blinded to the pathologist." This indicates a form of blinding to reduce bias in comparison. There is no mention of a specific numerical adjudication method (e.g., 2+1, 3+1). The comparison appears to be between the device's colposcopic findings and established diagnostic methods (Pap smear and histology).
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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, an MRMC study was not done in the context of AI assistance. This device is a colposcope, an optical instrument, not an AI/ML algorithm. The comparison was between a new colposcope (The Loupe) and a "standard operating microscope" (Zeiss OM-1), performed by human operators.
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If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
- No. This is a medical device (colposcope), not an algorithm. Its performance is inherently linked to human operation.
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The type of ground truth used (expert consensus, pathology, outcomes data, etc.):
- The ground truth was established by a combination of:
- Papanicolaou smear diagnoses
- Histological diagnoses from biopsies
- These are considered definitive diagnostic methods for cervical abnormalities.
- The ground truth was established by a combination of:
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The sample size for the training set:
- No training set is mentioned as this is not an AI/ML device. The "first sixty-one patients" constituted the primary comparison group, and subsequent cases were used for further validation.
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How the ground truth for the training set was established:
- Not applicable as there is no training set for an AI/ML algorithm. The ground truth for the evaluation was based on Papanicolaou smear diagnoses and histological diagnoses.
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