5 results about "Duodenoscopes" patented technology

This invention discloses a machine vision-based method for detecting contaminant residues after duodenoscope reprocessing, specifically in the field of machine vision, to address the problem of accurately locating and removing contaminant residues after existing duodenoscope reprocessing. The method involves applying controlled incident angle, wavelength, and polarization state light perturbations to the outer surface and inner lumen of the duodenoscope, acquiring image sequences under perturbation, and extracting temporal brightness response features of pixel blocks. Brightness difference residuals and consistency weights are calculated at different incident angles to identify candidate abnormal regions and generate a difference map reflecting their response characteristics to a clean baseline. The difference map is segmented, analyzed for connectivity, and clustered. Combining three-dimensional coordinate continuity and surface normal consistency, the three-dimensional spatial boundary of the suspected contamination area is delineated. Within this range, directional cleaning and retesting are performed, with repeated detection until the contamination area disappears, achieving high-precision detection and efficient cleaning.

The utility model discloses a kind of free directional guiding visual guide wire mirror devices.The device is mainly composed of hand handle, imaging optical fiber, illumination optical fiber, miniature viewfinder objective group, photoelectric conversion image acquisition group, flexible outer sleeve and front end free directional guiding end, outer diameter is less than 0.9mm.Free directional guiding function is unique, can be visualized to explore in the premise of not harming cavity tract mucosa, into super thin tube cavity and narrow site.The medical scene such as oviduct cavity tract inspection, assisting duodenoscope to carry out intrahepatic duct operation can be applied to, effectively break through the application limitation of traditional endoscope, reduce the harm of radiation, reduce cross-infection risk, provide innovative technical means for medical diagnosis and treatment.

Endoscopes (e.g., duodenoscopes) include dual-fluid valves for controlling the flow of water and air through a flexible tubular probe to flush or inflate the patient's lumen, respectively. Some examples of these dual-fluid valves include flexible valve seals that allow air to flow in one direction but not in the opposite direction. Different examples of these valve seals include features such as: a set of overlapping flexible flaps arranged in a spiral; a rubber disc with a cross-shaped array of perforations that opens in response to a positive pressure differential across the disc; an elastically expandable cone with multiple concentric ridges; a valve core surrounded by an elastic tubular member capable of radial expansion to open an air passage within the valve core; and an elastic tube that bulges radially outward when compressed or otherwise shortened to block the annular air passage.

A suction valve for an endoscope (e.g., a duodenoscope) includes a valve housing, a valve spool, and a return mechanism for returning the valve spool from a manually depressed position to a home position. In the depressed position, the suction valve places the endoscope in a suction configuration for drawing fluids, tissue or other matter out from within a patient. The home position places the endoscope in a vented configuration to interrupt the suction. Various examples of the return mechanism include a resilient integral portion of the valve spool, a resilient integral portion of the valve housing, a resiliently flexible diaphragm extending radially across an annular gap between the valve spool and the valve housing, and a magnetic set affixed to the valve spool and the valve housing.