A system may comprise a flexible elongated device including a fluid channel and a pore extending between the fluid channel and a surface of the flexible elongated device and a lubricious layer extending over at least a portion of the surface of the flexible elongated device. The system may also comprise a fluid system coupled to the flexible elongated device and a control system configured to cause fluid to be released by the fluid system to the fluid channel of the flexible elongated device. The fluid in the fluid channel flows through the pore to transition the lubricious layer from a dehydrated condition to a hydrated condition.

A negative-pressure sputum suction device capable of intermittently sucking sputum includes a box body, an intermittent negative pressure mechanism, an atomization mechanism, a negative pressure pipe, a ventilation frame, a filter screen, a collection mechanism, a box door, an anti-skid leg and a conveying pipe; the intermittent negative pressure mechanism is arranged in the box body, the atomization mechanism is arranged in the box body, and the negative pressure pipe is fixedly connected to the box body; the ventilation frame is fixedly connected to the box body, the filter screen is fixedly connected to the ventilation frame, the collection mechanism is arranged on the outer side of the box body, and the box door is hinged to the box body; four evenly-distributed anti-skid legs are fixedly connected to the box body, and the conveying pipe is fixedly connected to the box body.

A suction device includes a negative pressure generator, a connector and a mask; the negative pressure generator comprises a housing and a piston rod, wherein the housing is internally provided with a cavity, an upper end of the housing is provided with an avoidance hole communicated with the cavity, and a lower end thereof is provided with an opening communicated with the cavity; the piston rod comprises a push-pull rod and a piston sleeved on the push-pull rod, an upper end of the push-pull rod runs through the avoidance hole, and the piston is movably and hermetically connected to an inner side wall of the housing by means of a sealing ring; an upper side of the mask is provided with a through first connecting cylinder, and a lower side thereof is provided with a flexible annular pad configured to fit with the face.

Disclosed is a cloud computing system for use with surgical hubs communicatively coupled to surgical instruments in surgical procedures. The cloud computing system includes an input/output interface configured for receiving raw data from the surgical hubs, wherein the raw data are generated from operation of the surgical instruments in the surgical procedures. The cloud computing system further includes a data collection and aggregation module configured to: identify patterns in the raw data; generate metadata based on the patterns; aggregate raw data into data sets based on a predetermined classification system; and store aggregated data sets in a database.