The disclosure relates to a control method of a syringe pump, a syringe pump and a computer-readable storage medium. In the control method of the syringe pump, by determining whether a pressure of the first pressure sensor is less than a first pressure threshold and actively stopping an injection process when the pressure of the first pressure sensor is greater than or equal to the pressure threshold, it can be achieved to accurately determine whether a subject can bear an injection pressure, and to actively stop the injection and sound an alarm when a pressure in the infusion tube exceeds a bearing limit of the subject, thus ensuring personal safety of the subject. When the pressure of the first pressure sensor is less than the first pressure threshold, it is further determined whether a pressure of the second pressure sensor with higher sensitivity is less than a second pressure threshold, and when the pressure of the second pressure sensor is greater than or equal to the pressure threshold, the injection process can be actively stopped and an alarm can be sounded, thus realizing dual monitoring of the pressure in the infusion tube.

The disclosure relates to a control method of a syringe pump, a syringe pump and a computer-readable storage medium. In the control method of the syringe pump, by determining whether a pressure of the first pressure sensor is less than a first pressure threshold and actively stopping an injection process when the pressure of the first pressure sensor is greater than or equal to the pressure threshold, it can be achieved to accurately determine whether a subject can bear an injection pressure, and to actively stop the injection and sound an alarm when a pressure in the infusion tube exceeds a bearing limit of the subject, thus ensuring personal safety of the subject. When the pressure of the first pressure sensor is less than the first pressure threshold, it is further determined whether a pressure of the second pressure sensor with higher sensitivity is less than a second pressure threshold, and when the pressure of the second pressure sensor is greater than or equal to the pressure threshold, the injection process can be actively stopped and an alarm can be sounded, thus realizing dual monitoring of the pressure in the infusion tube.

A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.

An injector system for injecting fluid includes a syringe and an injector. The syringe includes a body and a plunger movably disposed within the body. The plunger has at least one flexible leg extending toward the rearward end of the body. The injector has a housing with a front plate, a drive member at least partially disposed within the housing and operable to engage the plunger, and a syringe release assembly operable to release the syringe. The syringe assembly includes a syringe release gear that forms an enclosure for receiving the syringe when the syringe is fully seated within the housing and a plunger release tube surrounding at least a portion of the drive member. The plunger release tube has a first end rotationally engaged with the syringe release gear. Rotation of the syringe release assembly releases the at least one flexible leg from the drive member.

A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold.

A pump device (10) operable with a syringe (11) having a barrel (12) and a plunger (13). The pump device (10) is operable to cause relative movement between the syringe plunger (13) and the syringe barrel (12) for discharging fluid from the syringe (11). The pump device (10) comprises a portion (31) adapted to engage the syringe barrel (12), and a drive mechanism for moving the syringe plunger (13) relative to the syringe barrel (12) to discharge fluid from the syringe (11). The drive mechanism comprises an actuator (45) adapted to engage the syringe plunger (13) and a power mechanism (61) for moving the actuator (45) to effect movement of the syringe plunger (13) relative to the syringe barrel (12). The pump device (10) thus provides a syringe driving means. There is also provided an infusion system comprising a syringe driving means, the syringe driving means comprising the pump device (10). Further, there is provided an infusion system comprising a syringe driving means operable to maintain a constant pressure within a syringe and tubing with viscosity corrections for various antibiotic concentrations.

An electric motor (20) usable in proximity to a magnetic resonance imaging (MRI) device (4) includes a stator (30) comprising electrical windings (32), and a rotor (40, 50, 60) magnetically coupled with the stator. The electric motor does not include ferromagnetic material, and the electric motor does not include any permanent magnet. The rotor may include an outer rotor cylinder (50, 60) surrounding the stator, and may further include an inner rotor cylinder (40) disposed inside the stator and connected to rotate with the outer rotor cylinder. The rotor may comprise a cylindrical sheet rotor (40, 50). Alternatively, the rotor (60) may comprise one or more conductive loops (62A, 62B, 62C) each shaped such that the induced voltage in one loop portion (HL1) cancels the effect of the induced voltage in another loop portion (HL2), and a coupled split stator (301, 302). In another disclosed aspect, an infusion pump (10) includes the electric motor.

A syringe pump configured to at least partially surround a syringe loaded into the pump. The syringe pump including a syringe pump housing defining a syringe receptacle shaped and sized to accept loading of the syringe, a plunger driver assembly configured to manipulate a plunger of a syringe loaded into the syringe pump, and a syringe housing including a syringe barrel shield pivotably coupled to the syringe pump housing configured to at least partially enclose a syringe loaded into the syringe pump within the syringe receptacle, and a syringe plunger tray and lid assembly operably coupled to the syringe pump housing and configured to at least partially enclose a portion of the plunger driver assembly.

Systems and methods for spraying a liquid treatment solution include a syringe attachment device and a handheld device. The syringe attachment device can be configured to secure a syringe containing the liquid treatment solution. The handheld device can have a movable slide configured to dispense the treatment solution from the syringe. The spray deposition system can include a cover' positioned to provide an impervious barrier between at least a portion of the syringe attachment device and the handheld device. The cover can be attached to the syringe attachment device prior to coupling the devices together. In an example, the cover can have a generally tubular shape with a closed end and an open end. The handheld device can be inserted into the cover and the cover can enclose the handheld device in the assembled position. In an example, the cover can be sterile and at least a portion of the syringe attachment device can be sterile.

A medical apparatus includes an operation reception unit, a position acquisition unit that can acquire position information of a detection target based on a position of the detection target on the operation reception unit at an acquisition time that occurs in a predetermined cycle, the detection target being in contact with or proximate to the operation reception unit, and a control unit that determines an operation position of the detection target on the operation reception unit at a last acquisition time before a latest acquisition time, on the basis of the position information acquired at the latest acquisition time.