REDSENSE ALARM SYSTEM
Device Facts
| Record ID | K130554 |
|---|---|
| Device Name | REDSENSE ALARM SYSTEM |
| Applicant | Redsense Medical AB |
| Product Code | ODX · Gastroenterology, Urology |
| Decision Date | Nov 22, 2013 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 876.5820 |
| Device Class | Class 2 |
Indications for Use
The Redsense device is intended to monitor for potential blood loss from the hemodialysis access site in hemodialysis patients undergoing hemodialysis treatment. The device includes a blood sensor incorporated into a sensor patch. The sensor monitors potential blood leakage from the venous needle blood access via a light signal and will alarm if blood leakage is detected by the device's sensor.
Device Story
Redsense Alarm System monitors for blood leakage at hemodialysis venous needle access sites. System comprises alarm unit and sensor patch with integrated optic fibers. Sensor uses infrared light to detect blood; if leakage occurs, light signal changes, triggering immediate audible alarm. Device powered by wall outlet; used in clinical or home settings by patients or trained personnel. Redesigned sensor uses thicker fiber with processed tip to replicate physical phenomena of bent fiber, improving production stability. Patch uses flexible materials for better fit over bulging fistulas and larger absorbent area for easier placement. Output alerts healthcare providers or patients to needle dislodgement or leakage, preventing extensive blood loss. Clinical utility validated via user evaluation; blood detection validated via non-clinical testing.
Clinical Evidence
No new clinical data provided. Relies on clinical user evaluation data from predicate K071013. Verification testing confirmed device fulfills requirement specifications, including electrical safety, EMC, biocompatibility, and performance. Ability to detect blood validated in non-clinical testing.
Technological Characteristics
Optical fiber-based blood leakage sensor; infrared light sensing principle. System powered by AC power supply. Patch uses flexible materials for fistula contouring. Complies with IEC 60601-2-16 and IEC 60601-1-2:2001/IEC 61000-6-1 EMC standards. Software-based alarm system.
Indications for Use
Indicated for hemodialysis patients undergoing hemodialysis treatment to monitor for potential blood loss from the venous needle access site.
Regulatory Classification
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.
Predicate Devices
- Redsense Medical alarm unit (K103242)
- Redsense Medical home use (K092955)
- Redsense Medical (K071013)