5 results about "Insufflators" patented technology

A leak detecting apparatus (1) for detecting a leak and determining the size of the leak in a suture repaired site (5) of a hollow organ (3), for example, a stomach, in a cavity (7), for example, the peritoneal cavity of a subject comprises a first insufflator (12) for insufflating the hollow organ (3) with a first gas, and a second insufflator (14) for insufflating the cavity (7) with a second gas. A gas detector (18) is provided for detecting the concentration of the first gas in gases exhausted from the cavity (7) through a communicating conduit (35). A flow meter (25) monitors the flow rate of the first gas to the hollow organ (3). First and second pressure sensors (15) and (16) monitor the static pressure of the first and second gases in the hollow organ (3) and the cavity (7), respectively. The apparatus (1) is operable in a first mode and a second mode. In both the first and second modes of operation a microprocessor (50) controls the second insufflator (14) for maintaining the pressure in the cavity (7) at a relatively low predefined pressure, and the first insufflator (12) for maintaining a constant predefined pressure differential between the pressures in the hollow organ (3) and the cavity (7) of approximately 7 mmHg. In the first mode the microprocessor (50) determines the size of the leak as a function of the pressure differential and the concentration of the first gas in the exhaust gases. In the second mode of operation the microprocessor (50) determines the size of the leak as a function of the pressure differential and the flow rate of the first gas to the hollow organ (3) with the hollow organ (3) sealed apart from the sutured site (5).

An insufflator is operable in a set-up mode and in a normal insufflating run mode. In the set-up mode, a pressure / volume relationship between cavity pressure and cavity volume of the cavity of a subject is determined. A minimum safe working pressure value and a maximum safe working pressure value of a working pressure range for the cavity to be insufflated is determined from the pressure / volume relationship as a pressure value just above a lower point of inflection and an upper point of inflection of the pressure / volume relationship, respectively. In the normal insufflating run mode a working pressure value is selected from the range of working pressure values and the insufflator insufflates the cavity to the selected working pressure value. Also disclosed is an insufflating system comprising an insufflator operable in a set-up mode and in a normal insufflating run mode. A controller located remotely relative to the insufflator remotely controls the insufflator to operate in the set-up mode and / or the normal insufflating run mode.

This invention discloses a multi-condition self-traceable calibration method and system for insufflators, relating to the field of insufflator metrology technology. The method includes: constructing a standard loop to apply back pressure and inject a controllable leakage; during a continuous calibration, controlling the insufflator under calibration to sequentially enter pressure stabilization, flow stabilization, and leakage disturbance conditions, synchronously collecting data through collaboratively working traceable pressure and flow references; comparing the reference measurements with the insufflator's readings to calculate pressure coupling error, flow coupling error, and dynamic response characteristics; performing standard state conversion based on preset standard pressure and temperature, fitting and generating calibration coefficients to correct the measured values, and generating a judgment result based on comparison of coupling error and dynamic response characteristics with preset thresholds; generating an automatic report including operating condition type, residual, final calibration measurement results, and uncertainty. This invention improves calibration accuracy and traceability through three-condition linkage calibration and environmental factor compensation.

The invention relates to an insufflation system, in particular in transanal total mesorectal excision (taTME), with two insufflators of identical construction, the sensor systems and operating modes of which are coordinated with one another such that the two insufflators optimally support the operation. According to the invention, the two insufflators, which initially insufflate (distend) different body cavities in the abdominal cavity, are coordinated in terms of their setpoints and operating states.

A surgical robotic system comprising: a robotic arm; a tool drive coupled to the robotic arm; a cannula interface configured to couple a cannula to the tool drive, the cannula interface having a fluid pathway in communication with an interior lumen of the cannula; and an insufflation pathway coupled to the robotic arm, the insufflation pathway having a distal end coupled to the fluid pathway and a proximal end coupled to a surgical insufflator.