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The Integrity Implant is indicated for the management and protection of tendon injuries in which there has been no substantial loss of tendon tissue.

The Integrity Implant is a partially resorbable mesh. The Integrity Implant is designed to provide an augmentation layer over an injured tendon. The patch is comprised of a knitted porous mesh of resorbable Hyaff multifilament fibers and non-resorbable poly(ethylene terephthalate) [PET] multifilament fibers. The patch is provided sterile, for single use only, in a variety of sizes in a thermoformed tray with peelable lid and outer polymer packaging. The device is an easy-to-handle, pliable, nonfriable, porous patch in both the dry and hydrated state.

The Integrity Implant will be made available in 2 sizes:

• 20mm X 25mm
• 25mm X 30mm

The mechanism of action of the Integrity Implant is to function as a protective layer by keeping damaged tendon physically separated from surrounding tissues during healing. It is not intended to replace substantial loss of tendon. Over the course of 4-6 months, the device will be mostly resorbed by the body.

The patch will be used in a surgical environment by a board-certified surgeon. It will be implanted using a standard open or arthroscopic access surgical procedure. It will be fixated at one end to the bone via fixation anchor and at the other end to the repaired tendon via suture or fixation anchor.

The provided document is a 510(k) summary for the Integrity™ Implant, a medical device for managing and protecting tendon injuries. It is a premarket notification to the FDA, demonstrating substantial equivalence to a predicate device.

Here's an analysis of the acceptance criteria and study information:

1. Table of Acceptance Criteria and Reported Device Performance:

The document doesn't explicitly state "acceptance criteria" in a quantitative, pass/fail format typical of AI/ML device submissions. Instead, it focuses on demonstrating substantial equivalence to a predicate device through various performance tests. The performance data is presented as evidence that the subject device performs comparably to the predicate.

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

• Animal Study (Test Set):

  • Sample Size: Forty-seven (47) skeletally mature sheep were enrolled.
  • Data Provenance: The study used an adult bilateral infraspinatus model in sheep, making it prospective animal data. The country of origin of the animal study is not specified in this document.

• No human clinical studies were conducted for this 510(k) submission, so there is no human test set data.

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

• For the animal study, the document mentions "gross dissections and harvest," "blood work and distant organ pathology," "radiographic endpoints," and "histology results."
• While these imply expert analysis (e.g., veterinary pathologists, radiologists, histotechnologists/pathologists), the document does not explicitly state the number of experts, their qualifications, or how ground truth was established for the animal study. It only reports the findings (e.g., "Blood work and distant organ pathology were normal," "Histology results from the current study demonstrated...").

4. Adjudication Method for the Test Set:

• The document does not specify any adjudication method (e.g., 2+1, 3+1) for establishing ground truth in the animal study. It's typical for animal study results to be interpreted by a single or a small team of experts (e.g., a veterinary pathologist), but this detail is not provided.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, and Effect Size:

• No Multi-Reader Multi-Case (MRMC) comparative effectiveness study was done. This device is a surgical implant, not an imaging analysis AI device that would typically involve human readers.

6. If a Standalone (Algorithm Only Without Human-in-the-Loop Performance) Was Done:

• No standalone (algorithm only) performance study was done. This device is a physical implant; there is no AI algorithm being evaluated for standalone performance.

7. The Type of Ground Truth Used:

• For the animal study, the "ground truth" was established through a combination of:
  • Direct Observation: Gross macroscopic appearance during dissection.
  • Imaging: Radiographic changes based on AP and lateral radiographs and Micro-Computed Tomography, 3T MRI scanning.
  • Biomechanical Testing: Tensile testing of the repaired rotator cuff.
  • Histopathology: Histological responses.
  • These are all objective biological and physical measurements from the animal model.

8. The Sample Size for the Training Set:

• This submission is for a physical medical device (implant), not an AI/ML algorithm. Therefore, there is no "training set" in the context of machine learning model development. The performance data is generated through bench and animal testing.

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

• As there is no AI/ML algorithm with a training set, this question is not applicable.

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The Pitch-Patch Tissue Reinforcement Device is a single use device intended for reinforcement of soft tissues that are repaired by suture or other fixation devices during tendon repair surgery including reinforcement of rotator cuff, patellar, Achilles, biceps, quadriceps tendon or other tendons.

The Pitch -Patch Tissue Reinforcement Device is not intended to replace normal body structure or provide the full mechanical strength to support the rotator cuff, patellar, Achilles, biceps tendon or other tendons. Sutures, used to repair the tear, and sutures or other fixation devices, used to attach the tissue to the bone, provide mechanical strength for the repair.

The Pitch-Patch is a permanent implantable device for reinforcement of soft tissues that are repaired by suture or other fixation devices during tendon repair surgery including reinforcement of rotator cuff, patellar, Achilles, biceps, quadriceps tendon. It is constructed from a warp knitted fabric with integral eyelets. It is reinforced around its perimeter and around each eyelet to increase the security of suture attachment. The Pitch-Patch is available in two sizes, to cover different tear sizes without trimming (30 x 20 mm and 35 x 25 mm). It should not be cut to size. The device is supplied sterile, by Gamma Irradiation to an SAL of 10-6.

The Pitch-Patch is made from Polyethylene Terephthalate (PET) also referred as polyester. This a non-absorbable material that has a long history of use in the orthopedic market.

The provided text describes a medical device called the "Pitch-Patch Tissue Reinforcement Device" and its FDA 510(k) clearance application. However, it does not contain information about the acceptance criteria or a study proving the device meets those criteria in the context of an AI/ML medical device.

The document is a 510(k) summary for a physical surgical mesh device, not an AI software or system. Therefore, details like AI performance metrics (sensitivity, specificity, AUC), test set characteristics, expert ground truth establishment, MRMC studies, or training set details are not applicable to the information given.

The "Performance Data" section lists various mechanical and biological tests for the Pitch-Patch (e.g., Suture Retention, Ultimate Strength, Biocompatibility). These are typical for surgical mesh devices to demonstrate safety and effectiveness for their intended physical function, but they are not the type of acceptance criteria or studies relevant to AI/ML device performance.

Therefore, I cannot provide the requested information for an AI/ML device based on the input text.

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