(440 days)
The intended use of the Dialysis Systems Inc. Bicarbonate Mixing System is the mixing of water and sodium bicarbonate powder for hemodialysis treatment and the delivery of the mixture to the treatment floor.
Dialysis Systems Inc.'s Bicarbonate Mixing System provides for batch mixing of bicarbonate liquid concentrate and transfer to a loop tank. The mixing tank works in conjunction with an external closed-loop mixing circuit that includes a pump and an eductor. The pump circulates liquid from the mixing tank, through the eductor and back into the mixing tank. The eductor is connected to a sodium bicarbonate additive hopper. A measured amount sodium bicarbonate additive is drawn into the mixing tank by the flow of fluid through the eductor. Mixing of the powder to create a bicarbonate liquid concentrate is accomplished by the mixing action of the eductor, the return flow to the mix tank and by further mixing action created by nozzles as the fluid is re-circulated back into the mix tank.
The provided text is a 510(k) summary for the DSI Bicarb Mixing System. It focuses on administrative details, device description, and substantial equivalence to a predicate device, but does not contain any information about acceptance criteria or a study proving the device meets them.
Therefore, I cannot fulfill your request to describe acceptance criteria and a study from this document, as the information is not present. The document mainly outlines the device's intended use and its substantial equivalence to a previously approved device (K970674).
No information is available regarding:
- A table of acceptance criteria and reported device performance.
- Sample sizes, data provenance, or details about test sets.
- Number or qualifications of experts for ground truth.
- Adjudication methods.
- MRMC comparative effectiveness studies.
- Standalone algorithm performance studies.
- Type of ground truth used.
- Sample size for the training set or how its ground truth was established.
§ 876.5820 Hemodialysis system and accessories.
(a)
Identification. A hemodialysis system and accessories is a device that is used as an artificial kidney system for the treatment of patients with renal failure or toxemic conditions and that consists of an extracorporeal blood system, a conventional dialyzer, a dialysate delivery system, and accessories. Blood from a patient flows through the tubing of the extracorporeal blood system and accessories to the blood compartment of the dialyzer, then returns through further tubing of the extracorporeal blood system to the patient. The dialyzer has two compartments that are separated by a semipermeable membrane. While the blood is in the blood compartment, undesirable substances in the blood pass through the semipermeable membrane into the dialysate in the dialysate compartment. The dialysate delivery system controls and monitors the dialysate circulating through the dialysate compartment of the dialyzer.(1) The extracorporeal blood system and accessories consists of tubing, pumps, pressure monitors, air foam or bubble detectors, and alarms to keep blood moving safely from the blood access device and accessories for hemodialysis (§ 876.5540) to the blood compartment of the dialyzer and back to the patient.
(2) The conventional dialyzer allows a transfer of water and solutes between the blood and the dialysate through the semipermeable membrane. The semipermeable membrane of the conventional dialyzer has a sufficiently low permeability to water that an ultrafiltration controller is not required to prevent excessive loss of water from the patient's blood. This conventional dialyzer does not include hemodialyzers with the disposable inserts (Kiil type) (§ 876.5830) or dialyzers of high permeability (§ 876.5860).
(3) The dialysate delivery system consists of mechanisms that monitor and control the temperature, conductivity, flow rate, and pressure of the dialysate and circulates dialysate through the dialysate compartment of the dialyzer. The dialysate delivery system includes the dialysate concentrate for hemodialysis (liquid or powder) and alarms to indicate abnormal dialysate conditions. This dialysate delivery system does not include the sorbent regenerated dialysate delivery system for hemodialysis (§ 876.5600), the dialysate delivery system of the peritoneal dialysis system and accessories (§ 876.5630), or the controlled dialysate delivery system of the high permeability hemodialysis system § 876.5860).
(4) Remote accessories to the hemodialysis system include the unpowered dialysis chair without a scale, the powered dialysis chair without a scale, the dialyzer holder set, dialysis tie gun and ties, and hemodialysis start/stop tray.
(b)
Classification. (1) Class II (performance standards) for hemodialysis systems and all accessories directly associated with the extracorporeal blood system and the dialysate delivery system.(2) Class I for other accessories of the hemodialysis system remote from the extracorporeal blood system and the dialysate delivery system, such as the unpowered dialysis chair, hemodialysis start/stop tray, dialyzer holder set, and dialysis tie gun and ties. The devices subject to this paragraph (b)(2) are exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 876.9.