An automatic analyzing apparatus includes a stirring mechanism. The stirring mechanism is provided with: a fixed member fixed to an apparatus body; a motor attached to the fixed member; a drive-side helical gear provided on a drive shaft of the motor; bearings provided to the fixed member with the center shaft held parallel to the drive shaft of the motor; a support member of circular column shape, supported so as to be capable of receding from one side relative to the bearings; a driven-side helical gear fixed to an end of the support member coaxially with respect to the support member such that the driven-side helical gear is fitted together with the drive-side helical gear with the support member recessed into the bearings; and a stirring rod extending coaxially with the support member from the end of the support member opposite to the end provided with the driven-side helical gear.

A fluid mixing system includes a support housing having an interior surface bounding a chamber. A flexible bag is disposed within the chamber of the support housing, the flexible bag having an interior surface bounding a compartment. An impeller is disposed within the chamber of the flexible bag. A drive shaft is coupled with the impeller such that rotation of the drive shaft facilitates rotation of the impeller. A drive motor assembly is coupled with the draft shaft and is adapted to rotate the drive shaft. An adjustable arm assembly is coupled with the drive motor assembly and is adapted to move the drive motor assembly which in turn moves the position of the drive shaft and impeller. An electrical controller can control movement of the adjustable arm.

A fluid mixing system includes a support housing having an interior surface bounding a chamber. A flexible bag is disposed within the chamber of the support housing, the flexible bag having an interior surface bounding a compartment. An impeller is disposed within the chamber of the flexible bag. A drive shaft is coupled with the impeller such that rotation of the drive shaft facilitates rotation of the impeller. A drive motor assembly is coupled with the draft shaft and is adapted to rotate the drive shaft. An adjustable arm assembly is coupled with the drive motor assembly and is adapted to move the drive motor assembly which in turn moves the position of the drive shaft and impeller. An electrical controller can control movement of the adjustable arm.

A fluid mixing system includes a flexible bag having a first end, an opposing second end, and an interior surface bounding a compartment; a retainer coupled to the second end of the flexible bag, the retainer having a retention cavity formed thereon that communicates with the compartment of the flexible bag; and an elongated member having a first end rotatably coupled to the first end of the flexible bag and an opposing second end freely disposed within the retention cavity of the retainer so that the second end of the elongated member can rotate within the retention cavity relative to the retainer.

A fluid mixing system includes a flexible bag having a first end, an opposing second end, and an interior surface bounding a compartment; a retainer coupled to the second end of the flexible bag, the retainer having a retention cavity formed thereon that communicates with the compartment of the flexible bag; and an elongated member having a first end rotatably coupled to the first end of the flexible bag and an opposing second end freely disposed within the retention cavity of the retainer so that the second end of the elongated member can rotate within the retention cavity relative to the retainer.

A bioreactor system includes a support housing having an interior surface bounding a compartment, the support housing having a sidewall with an opening extending therethrough and communicating with the compartment. A rack is secured to the support housing in alignment with the opening. An elongated first shaft has a first end and an opposing second end, the first end of the first shaft being secured to the rack so that the second end of the first shaft projects outwardly away from the sidewall of the support housing. A structure is secured to the first shaft towards the second end of the first shaft, the structure outwardly projecting away from the first shaft. A collapsible bag bounds a chamber and is at least partially disposed within the compartment of the support housing. A member projects from the collapsible bag and passes through the opening on the sidewall, the structure restraining movement of the member.

A method for mixing a fluid includes: dispensing a first volume of a fluid into a flexible container, the flexible container being at least partially disposed within the chamber of a support housing; repeatedly moving the support housing and the flexible container contained therein so as to mix the first volume of fluid within the flexible container; adding further fluid into the flexible container after moving the support housing to form a second volume of fluid; and manipulating a mixing element within the flexible container so as to mix the second volume of fluid.

A fluid mixing system includes a flexible bag having a first end, an opposing second end, and an interior surface bounding a compartment. A first rotational assembly includes a first casing mounted to the first end of the flexible bag and a first hub rotatably mounted to the first casing. A second rotational assembly includes a second casing mounted to the second end of the flexible bag and a second hub rotatably mounted to the second casing. A connector has a first end coupled with the first hub and an opposing second end coupled with the second hub, the connector being flexible and having a uniform flexibility along its entire length. A first impeller is mounted to the connector.

The invention relates to a dispersion tool (4) that can be cleaned more easily. For this purpose, the dispersion rotor (8) is arranged on the dispersion tool (4) axially moveable between the working position in the shaft tube (5) and the cleaning position outside the shaft tube (5), the dispersion rotor (8), in the cleaning position, being preferably completely arranged outside the shaft tube (5) and therefore being more easily cleanable.

The invention relates to a mixer insert having a support rod element and at least one vortexing element and a rotary drive connection structure, wherein the mixer insert, for insertion into a tubular passage element, and together therewith, is adapted to a device for mixing at least two fluid components to be placeable by means of the rotary-drive connection structure in drive connection with a driveshaft of the device, when the mixer insert is inserted into the passage element and the passage element is placed in fluid-tight flow connection with at least two component feed lines of the device, characterized in that the rotary-drive connection structure has a bore hole having a bore hole wall which are adapted to a thread on the driveshaft in such a manner that the bore hole, for producing the drive connection, can be screwed onto the thread, wherein the bore hole wall is shaped by the thread. The invention also relates to such a device for mixing and also to a system of such a device and such a mixer insert.