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The EnCor Enspire™ Breast Biopsy System is indicated to acquire breast tissue for histologic examination with partial or complete removal of the abnormality.

The EnCor Enspire™ Breast Biopsy System provides control operations for specialized biopsy instruments intended to acquire tissue samples of suspected breast abnormalities for diagnostic sampling. The EnCor Enspire™ Breast Biopsy System may be utilized with ultrasound, stereotactic, or MRI imaging guidance during the biopsy procedure. The EnCor Enspire™ Breast Biopsy System may be used with the EnCor™ Probes and EnCor™ Drivers. The EnCor Enspire™ Breast Biopsy System is reusable and provided non-sterile.

The EnCor™ Probe is a handheld biopsy probe used as part of a vacuum-assisted breast biopsy system. The EnCor™ Probe is meant to be used with an EnCor Enspire™ Breast Biopsy System or an EnCor™ Breast Biopsy System. The EnCor™ Probe is provided sterile and is intended for single use.

The EnCor™ Drivers are handheld units for ultrasound quided breast biopsies and for mounting on stereotactic platforms using adapters. The EnCor™ Drivers are reusable and provided nonsterile.

This document does not contain the information required to describe the acceptance criteria and the study that proves the device meets those criteria. The provided text is an FDA 510(k) clearance letter and summary, which confirms that the device is substantially equivalent to a previously cleared predicate device.

Specifically, the document states:

• "The technological characteristics of the subject device are the same as those of the predicate device."
• "The subject devices and predicate are different in the following manner: Modifications to the Indication for Use Statement."
• "The change to the Indications for Use described in this submission does not affect the design of the device and no new or increased risks have been identified, therefore additional bench performance testing was not warranted."

This clearly indicates that no new performance studies were conducted for this 510(k) submission to demonstrate the device meets acceptance criteria. The clearance is based on the substantial equivalence to the predicate device, and the only change (modifications to the Indications for Use statement) was deemed clerical and not affecting the device's design, safety, or effectiveness.

Therefore, I cannot provide the requested information regarding acceptance criteria, device performance, sample sizes, ground truth establishment, or expert involvement, as these details are not present in the provided FDA clearance documentation.

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The EnCor™ Breast Biopsy Probe with Rinse Tube is indicated to acquire tissue for diagnostic sampling of breast abnormalities and saline rinse the tissue samples collected within the tissue chamber during a biopsy procedure. It is intended to provide breast tissue for histologic examination with partial or complete removal of the imaged abnormality.

The extent of histologic abnormality cannot be reliably determined from its mammographic appearance. Therefore, the extent of removal of the imaged evidence of an abnormality does not predict the extent of removal of a histologic abnormality, e.g., malignancy. When the sampled abnormality is not histologically benign, it is essential that the tissue margins be examined for completeness of removal using standard surgical procedures.

The EnCor™ Breast Biopsy Probe with Rinse Tube is a handheld, single use, sterile (irradiation) biopsy probe used as part of a vacuum-assisted biopsy system (EnCor™ or EnCor Enspire™) and is intended to be used with ultrasound or stereotactic guidance. The probe is used for diagnostic sampling during a breast biopsy procedure. The device consists of a cutter/cannula with a sharp trocar tip, housing, sample container, vacuum and rinse tubing, and a rinse subcassette. A stainless steel cutter acquires the tissue samples, which are transported by vacuum to the probe's sample container, where they may be rinsed with saline. The EnCor™ Breast Biopsy Probe with Rinse Tube is available in 7 gauge, and 12 gauge, in both standard and vertical orientations for each qauge size.

This document is a 510(k) Premarket Notification from the FDA for the "EnCor Breast Biopsy Probe with Rinse Tube." As such, it focuses on demonstrating substantial equivalence to a predicate device rather than presenting a detailed study proving the device meets specific acceptance criteria in the same way a clinical trial for a standalone AI algorithm would.

Here's an analysis based on the provided text, addressing your points where possible:

1. Table of Acceptance Criteria and Reported Device Performance

The document does not explicitly state quantitative acceptance criteria or reported device performance metrics in the format you might expect for an AI algorithm. Instead, it lists performance testing summaries designed to show equivalence to a predicate device.

2. Sample Size Used for the Test Set and Data Provenance

The document describes non-clinical tests performed on the device itself (e.g., vacuum testing, tensile testing), not on patient data. Therefore, there is no "test set" in the context of patient data, nor is there data provenance (country of origin, retrospective/prospective). The study is essentially an engineering verification and validation study comparing the new device to the predicate device and established performance standards.

3. Number of Experts Used to Establish Ground Truth for the Test Set and Qualifications

Not applicable. This device is a physical breast biopsy probe, not an AI diagnostic tool. "Ground truth" in this context would relate to the physical properties and performance of the device components, which are typically assessed through engineering measurements and established test methods, not expert clinical consensus on images or pathology.

4. Adjudication Method

Not applicable. There is no clinical imaging or pathology data requiring adjudication.

5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

Not applicable. This is a physical medical device, not an AI algorithm intended to assist human readers in interpretation.

6. Standalone (Algorithm Only Without Human-in-the-Loop Performance) Study

Not applicable. This is a physical medical device. This term is relevant for AI algorithms.

7. Type of Ground Truth Used

The "ground truth" for the non-clinical tests would be the established engineering specifications, design requirements, and performance characteristics of the predicate device, as well as industry standards for medical device components and functionality. For example, a vacuum test would compare the device's vacuum pressure against a specified range or the predicate's measured pressure.

8. Sample Size for the Training Set

Not applicable. This is a physical medical device, not an AI algorithm that requires a training set of data.

9. How the Ground Truth for the Training Set Was Established

Not applicable, as there is no training set for a physical medical device.

Summary of the Study:

The study described is a non-clinical performance testing summary aimed at demonstrating substantial equivalence to a predicate device per FDA 510(k) requirements. The tests performed were engineering-based evaluations of the physical device's functionality, such as "Cassette functionality and switch activation," "Vacuum testing," "Rinse testing," "Tensile testing," "Sub-cassette reliability," and "Packaging validation." These tests likely involved comparing the performance of the new device to pre-defined specifications and/or the performance of the predicate device. The conclusion is that the device's technological characteristics and performance are "comparable" to the predicate, making it as safe and effective.

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