(84 days)
The TX1 Tissue Removal System is indicated for use in surgical procedures where fragmentation, emulsification, and aspiration of soft tissue are desirable, including General Surgery, Orthopedic Surgery, Laparoscopic Surgery and Plastic and Reconstructive Surgery.
The TX1 Tissue Removal System is an ultrasonic surgical aspirator that emulsifies and removes soft tissue. The system consists of a console, ultrasonic handpiece, tube set, and foot pedal: The system has been designed to work with commercially available accessories and consumables including cautery pencils and forceps, ultrasonic handpiece tips, and silicone sleeves. The console provides control over the four modes of operation including irrigation, aspiration, cutting, and coagulation. It has a large, color LCD and employs a touch-screen for selection of required settings. The console also provides audible tones for confirmation of selections. The console also houses the irrigation and aspiration pumps, thereby eliminating the need for a dedicated service cart or suction/waste source within the operating room. Two USB ports are available for loading software upgrades. An Ethernet port is also available for future system expandability. The ultrasonic handpiece connects to the console for power. and to the tube set for both delivering irrigation fluid directly to the surgical site and for removing emulsified tissue. The handpiece is constructed from both 316L stainless steel and TiAl6V4 Titanium Alloy components, and can be sterilized by steam and reused multiple times. The tube set employs an external tubing cartridge design that can be easily installed or removed in a single step. The tubing is made of biomedical grade silicone. The tube set can be sterilized by steam and reused multiple times. Irrigation fluid is delivered under pressure to ensure adequate cooling of the ultrasonic tip, as well as adequate flushing of the surgical site, by operation of an air pump residing in the console. The regulated output of the air pump pressurizes a cuff that is fitted around the irrigating fluid bag, thus providing irrigation at a fixed pressure regardless of the height of the fluid bag. The foot pedal is used to control each of the four functions of the system. Simple in design, it offers on/off functionality and is rated IPX5 for protection against liquids.
The provided text describes a 510(k) submission for a medical device, the TX1 Tissue Removal System, and focuses on demonstrating its substantial equivalence to a predicate device. This type of submission relies on comparisons to existing devices rather than a standalone clinical study to establish acceptance criteria based on performance. As such, the information you've requested regarding specific acceptance criteria metrics (like sensitivity, specificity), sample sizes, expert ground truth establishment, MRMC studies, or training set details is not present in the provided document.
The document states: "Independent, 3rd party electrical safety testing, adherence to U.S. FDA design control guidance, as well as thorough in-house, non-clinical (bench) testing and software validation provide reasonable assurance that the TX1 Tissue Removal System is safe and effective, and is, with respect to intended use and technological characteristics, substantially equivalent to the predicate device." This indicates that the "study" proving the device meets acceptance criteria was primarily focused on bench testing, software validation, and compliance with electrical safety standards and design control guidance, rather than a clinical trial with performance metrics.
Here's a breakdown of what can be extracted based on your request, with the understanding that many fields will be "Not Applicable" or "Not Provided" given the nature of a 510(k) substantial equivalence submission:
1. Table of acceptance criteria and the reported device performance
For a 510(k) submission, the "acceptance criteria" are typically related to demonstrating comparable technological characteristics and intended use to a predicate device, along with adherence to relevant safety standards. "Reported device performance" would thus be a comparison of these characteristics.
| Characteristic | Acceptance Criteria (Predicate Device K021989) | Reported Device Performance (TX1 Tissue Removal System) |
|---|---|---|
| Indications for Use | Fragmentation, emulsification, and aspiration of soft tissue desirable in surgical procedures. | Fragmentation, emulsification, and aspiration of soft tissue desirable in surgical procedures. |
| Method of tissue emulsification | Ultrasonic energy | Ultrasonic energy |
| Material in contact with tissue | TiAl6V4 Titanium Alloy | TiAl6V4 Titanium Alloy |
| Electrical safety standards met | 60601-1, 60601-1-2, CSA 22.2 #601-1 | 60601-1, 60601-1-2, 60601-2-2 |
| Power source | 100-240V 50/60Hz | 100-240V 50/60Hz |
| Frequency | 24 kHz and 35 kHz | 28 kHz |
| Tip Amplitude | Max 24 kHz: 305µm, Max 35 kHz: 215µm | Max 255µm |
| Method of aspiration (vacuum) | Venturi pump | Peristaltic pump |
| Vacuum level | 0 to 600 mmHg | 100, 300, or 500 mmHg |
| Method of irrigation | Constant flow | Constant Pressure |
| Irrigation flow | 0 to 50 cc/min | 10, 20, or 30 cc/min |
| Display | 7 segment, manual pushbutton | Articulating, LCD Touch Screen |
Note on Acceptance Criteria: The acceptance criteria for a 510(k) are implicitly met if the new device demonstrates "substantial equivalence" to the predicate, meaning it has the same intended use and similar technological characteristics, or if differences do not raise new questions of safety or effectiveness. The table above summarizes how the device compares to the predicate on these characteristics.
2. Sample size used for the test set and the data provenance
- Sample Size for Test Set: Not applicable in the context of a 510(k) substantial equivalence submission. No clinical "test set" (e.g., patient cases for diagnostic accuracy) is mentioned. The "testing" involved bench testing, software validation, and electrical safety testing. Details of these tests (e.g., number of units tested, duration of tests) are not provided in this summary.
- Data Provenance: Not applicable. The "study" was primarily engineering and regulatory compliance testing rather than clinical data collection from a specific country or retrospective/prospective design.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts
- Number of Experts: Not applicable. Ground truth for a diagnostic test set is not established here. The assessment is based on engineering specifications and performance against those specifications.
- Qualifications of Experts: The document mentions "Independent, 3rd party electrical safety testing" and "in-house, non-clinical (bench) testing and software validation." This implies qualified engineers and testers conducted these evaluations, but specific qualifications are not detailed.
4. Adjudication method for the test set
- Adjudication Method: Not applicable. There was no diagnostic test set requiring expert adjudication.
5. 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
- MRMC Study: No. This is not an AI-based device, nor is a clinical comparative effectiveness study described in this 510(k) summary.
6. If a standalone (i.e. algorithm only without human-in-the loop performance) was done
- Standalone Performance: Not applicable. This device is an ultrasonic surgical aspirator, not an algorithm. Its "standalone" performance would be its functional operation in a surgical setting, which is inferred as equivalent to the predicate device through bench testing and design comparisons.
7. The type of ground truth used
- Type of Ground Truth: For the engineering and performance evaluations, the "ground truth" would be the established engineering specifications, performance parameters (e.g., maximum tip amplitude, vacuum levels), and electrical safety standards (e.g., IEC 60601-1). The device was tested to ensure it met these predefined technical requirements and performed comparably to the predicate on relevant parameters.
8. The sample size for the training set
- Sample Size for Training Set: Not applicable. This device does not involve machine learning or an "AI" component that requires a training set.
9. How the ground truth for the training set was established
- Ground Truth for Training Set: Not applicable, as there is no training set for a machine learning model.
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