CN101785889B - Infusion pump with occlusion alarm device - Google Patents

Abstract

The invention discloses an infusion pump with an occlusion alarm device, which comprises a pump body bracket, a peristaltic pump installed on the pump body bracket, a motor for driving the peristaltic pump and an occlusion alarm device, wherein the occlusion alarm device comprises a sensor and a signal processing module, and the sensor is used for detecting the rotation speed signals of the peristaltic pump and outputting the rotation speed signals to the signal processing module; and the sensor is installed on one end surface of the rotating shaft of the peristaltic pump. By arranging the occlusion alarm device, the invention can detect the rotating condition of the peristaltic pump, and can send out alarm signals in time when the peristaltic pump stalls or the rotation speed of the peristaltic pump drops due to the belt creep or fracture or other causes, thereby reducing the potential safety hazard in the transfusion process.

Description

A kind of infusion pump with occlusion alarm device

Technical field

The present invention relates to a kind of medium be introduced the medical apparatus and instruments of human body, specifically relate to a kind of infusion pump.

Background technology

Infusion pump is a kind of device of safe, accurate control transfusion.Traditional infusion mode utilizes liquid potential energy to be used as power, and be difficult to control steadily in the long term transfusion speed and amount of infusion, and infusion pump can satisfy the occasion requirement of high accuracy and quick infusion.As shown in Figure 1, be fixed withmotor 2 on thepump housing support 1 of infusion pump,motor 2drives drivewheel 3 rotations,drivewheel 3 drives drivenpulley 5 rotations bybelt 4, thereby drive rotatingshaft 6 rotations of peristaltic pump, at this moment the lateral surface that is installed in a plurality ofeccentrics 7 in the rotatingshaft 6 forms the waveform motion, thereby promotes to be pressed on the interior liquid flow of tube for transfusion of lateral surface.The problem that existing infusion pump exists is, because infusion pump is to control the flow, flow velocity etc. of transfusion by the speed of regulating electric machine, if fault has appearred in the transmission thatmotor 2 and rotating shaft are 6, as skid, the reason such as belt disengaging causes the motor rotation and peristaltic pump does not rotate or rotary speed when very slow, will bring the safety problem of transfusion, form medical hidden danger.

Summary of the invention

The technical problem to be solved in the present invention is to propose a kind of infusion pump with occlusion alarm device, can in time find peristaltic pump holddown phenomenon, eliminates the potential safety hazard that causes owing to the holddown reason in the infusion process.

Technical problem of the present invention is solved by the following technical programs.

This infusion pump with occlusion alarm device comprises pump housing support, is installed in the peristaltic pump on the pump housing support, the motor of driving peristaltic pump; Also comprise occlusion alarm device; Described occlusion alarm device comprises sensor, signal processing module, and described sensor is for detection of the tach signal of peristaltic pump, and this tach signal is exported to signal processing module.

Further, in the above-mentioned infusion pump with occlusion alarm device, described installation of sensors on this body support frame, be positioned at an end of peristaltic pump rotating shaft.

Pass through drivewheel, belt and driven pulley transmission between described motor and the peristaltic pump.

Described signal processing module comprises signal processing circuit, control processor and audible-visual annunciator, the input of described signal processing circuit is connected with the outfan of sensor, the outfan of described signal processing circuit is connected with the input of control processor, and the input of described audible-visual annunciator is connected with the outfan of control processor.

The outfan of described control processor also is connected with motor.

The present invention is compared with the prior art the beneficial effect that has: prior art is only carried out feedback control to the revolution of motor, and the present invention is provided with occlusion alarm device, can detect the rotation situation of peristaltic pump, when peristaltic pump causes stall owing to reasons such as belt creep or fractures, can send in time alarm signal, thus the potential safety hazard in avoiding infusing.The Speed sensing device is installed in the axial end of peristaltic pump, does not affect the physical dimension of the whole pump housing, and rotating speed that can the direct-detection peristaltic pump.

Description of drawings

Fig. 1 is the structural representation of the specific embodiment;

Fig. 2 is the functional block diagram of the occlusion alarm device in the specific embodiment.

The specific embodiment

A kind of infusion pump, as shown in Figure 1, identical with existing infusion pump is to comprisepump housing support 1,motor 2,drivewheel 3,belt 4, drivenpulley 5, rotatingshaft 6, eccentric 7.Motor 2drives drivewheel 3 rotations,drivewheel 3 drives drivenpulley 5 rotations bybelt 4, driven pulley drives rotatingshaft 6 rotations of peristaltic pump, after rotatingshaft 6 rotations, the lateral surface that is installed in a plurality ofeccentrics 7 in the rotatingshaft 6 forms the waveform motion, thereby promotes to be pressed on the interior liquid flow of tube for transfusion of lateral surface.Infusion pump also is provided with control unit, is used for starting and stopping, the rotating speed size of control motor.

In the present embodiment, also be provided with occlusion alarm device.

As shown in Figure 1, on an end of the rotatingshaft 6 of peristaltic pump, pump housing support, also be provided with electromagnetictype speed probe 8, for detection of the speed conditions of drivenspindle 6, the operation principle ofsensor 8 is prior art, also can adopt various Hall elements,photoelectric sensor.Sensor 8 is installed in an end of drivenspindle 6, thus rotating speed that can direct-detection rotating shaft 6, and do not affect whole transfusion pump structure, easy for installation.As shown in Figure 2, occlusion alarm device comprisesmagnetoelectric transducer module 100 and signal processing module, and signal processing module comprisessignal processing circuit 200,control processor 300 and audible-visual annunciator 400.Magnetoelectric transducer module 100 gathers the tach signal of rotatingshaft 6 by thesensor 8 that is installed in rotatingshaft 6 one ends, and tach signal sent intosignal processing circuit 200 is amplified, comparison process, if abnormal conditions appear in the rotating speed of rotatingshaft 6, such as stopping operating or rotating speed drops to the limit low value of setting, then output signal to controlprocessor 300,control processor control 300 starts audible-visual annunciator 400 and sends the sound and light alarm signal.Simultaneously,control processor 300 also is connected withmotor 2, outputs signal to the rotation thatmotor 2 stopsmotor 2, prevents that the idle running of holddown rear motor or motor overload from damaging.

Above content is the further description of the present invention being done in conjunction with concrete preferred implementation, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (3)

1. the infusion pump with occlusion alarm device comprises pump housing support, is installed in the peristaltic pump on the pump housing support, the motor of driving peristaltic pump; It is characterized in that: also comprise occlusion alarm device, described occlusion alarm device comprises sensor, signal processing module, and described sensor is for detection of the tach signal of peristaltic pump, and this tach signal is exported to signal processing module;

Described signal processing module comprises signal processing circuit, control processor and audible-visual annunciator, the input of described signal processing circuit is connected with the outfan of sensor, the outfan of described signal processing circuit is connected with the input of control processor, and the input of described audible-visual annunciator is connected with the outfan of control processor;

The outfan of described control processor also is connected with motor;

Described signal processing circuit is used for the tach signal that receiving sensor transmits, and to the tach signal that receives amplify, comparison process, if abnormal conditions appear in the rotating speed of rotating shaft, then output signal to control processor, control processor control starts audible-visual annunciator and sends the sound and light alarm signal, simultaneously, control processor also outputs signal to the rotation that motor stops motor.

2. have as claimed in claim 1 the infusion pump of occlusion alarm device, it is characterized in that: described installation of sensors on this body support frame, be positioned at an end of peristaltic pump rotating shaft.

3. the infusion pump with occlusion alarm device as claimed in claim 2 is characterized in that: pass through drivewheel, belt and driven pulley transmission between described motor and the peristaltic pump.

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