CN201906287U

CN201906287U - End face peristaltic infusion pump

Info

Publication number: CN201906287U
Application number: CN2010206779149U
Authority: CN
Inventors: 冯筠荪
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2011-07-27
Anticipated expiration: 2020-12-24

Abstract

The utility model relates to an end face peristaltic infusion pump and a control method thereof. The end face peristaltic infusion pump comprises a pump seat, a pump cover and a locking piece of the end face peristaltic infusion pump, wherein an inner cavity of a cylindrical surface of the pump seat is provided with a cylindrical pump core, the pump core is provided with a motor and a speed changing device, and the inner side of the pump cover is provided with an annular guide slot for containing a pump pipe, and two grooves which can make the pump pipe penetrate into and out of the pump cover and are connected with the annular guide slot. An annular positioning gasket is arranged in the annular guide slot. The pump cover is provided with a position sensor. The outer side of the pump cover is provided with a mechanical indicating device. The end face at one side with a roller of the pump core is provided with a coupling part coupled with a main driving shaft of the mechanical indicating device. In addition, an anti-skidding clip is also arranged. In the utility model, an infusion pipe is convenient to replace, and simultaneously extrusion points of the infusion pipe are increased so as to improve the reliability. The pump pipe is continuously extruded with multiple extrusion points, a liquid infusion process is smooth and the control precision is high. The end face peristaltic infusion pump has a simple structure and high efficiency and is convenient to maintain, and a rolling part is used for improving the mechanical efficiency and reducing the manufacturing cost. The end face peristaltic infusion pump has high degree of automation due to software control.

Description

The end face wriggling transfusion pump

Technical field

This utility model belongs to a kind of infusion pump that is used for the medicinal liquid infusion, particularly relates to a kind of end face wriggling transfusion pump that is used for the medicinal liquid infusion.

Background technology

Transfusion is present basic medical and nursing work, and along with the progress of medical skill, transfusion is used increasingly extensive, and each hospital outpatient all has tens even tens special-purpose seats of transfusion.Inside, ward, the indispensable link of daily nursing especially of infusing.But the gravity type infusion model of manual adjustment, its precision relies on the speed of manual observation drop, and reliability relies on the hand control operation, and its accident rate is difficult to effective control.Medical in addition nutritional solution relies on the manual injection usually, and is very inconvenient.External for this reason invention infusion pump, infusion medicinal liquid automatically, principle also can be carried nutritional solution equally, widely applies at present, especially the indispensable visual plant of intensive care unit(ICU) ICU.

Peristaltic pump is simple in structure with it, and control accuracy height, pump line itself are changed tube for transfusion and can be avoided secondary pollution as the parts of carrying liquid, and in medical applications, peristaltic pump has unique advantage.In the peristaltic pump of various structures, it is efficient and convenient that " linear peristaltic pump " changes pump line with it, is better than rotary peristaltic pump, therefore almost becomes the selection of present various infusion pump unanimities.No matter import or homemade infusion pump, its operation principle is " linear peristaltic pump " or is called " finger-type peristaltic pump ", promptly refer to by a plurality of cunnings that are arranged in a straight line, under the control of a series of cams, order is pushed tube for transfusion, can advance liquid flow, the control infusion process realizes transfusion mechanization, automatization, overcome the shortcoming of hand control transfusion, improve injection quality, especially infuse for low discharge, the almost artificial transfusion of its function can't realize, therefore the application of infusion pump technology is day by day extensive, general conventional transfusion work, and infusion pump gradually also promotes the popularization use.

Because transfusion operation must be changed tube for transfusion each time, linear peristaltic pump has the tube for transfusion of replacing advantage simple to operate, is the most basic requirement of transfusion operation.But linear infusion pump complex structure, the motion that cunning refers to is sliding friction between cam and cunning refer to, and mechanical efficiency is low, the fault rate height, maintenance workload is big.Sliding simultaneously refer to for the pressure point of pump line few, poor reliability.Tube for transfusion uses the traditional gravity transfusion to use transfusion device, and its accuracy of manufacture is lower, causes pushing shortcomings such as inhomogeneous, influences the complete machine performance.

Summary of the invention

This utility model is for solving the infusion pump complex structure that exists in the known technology, and mechanical efficiency is low, the fault rate height, maintenance workload is big, transfusion device is used in the transfusion of poor reliability and traditional gravity, and the accuracy of manufacture is lower, causes pushing technical problem such as inhomogeneous and a kind of end face wriggling transfusion pump is provided.

The technical scheme that this utility model is taked for its end face wriggling transfusion pump of technical problem that exists in the solution known technology is: the pump seat that has central shaft hole that includes the end face peristaltic pump, pump cover and with described pump seat and the relatively-stationary locking member of pump cover, have one to insert described pump seat central shaft hole at described pump seat face of cylinder inner chamber, the cylindrical pump core that axially rotates around cylindrical center, described pump core has motor and speed change gear thereof, have one can place the annular guide channel that tube for transfusion is a pump line in described pump cover inboard, and two passages that described pump line is penetrated pass pump cover and be connected with described annular guide channel; One circular orientation pad is arranged in described annular guide channel; One running roller position sensor is arranged on described pump cover; There is a driving shaft to pass the mechanical indication means of described pump cover centre bore in the outside of described pump cover; One male part that is coupled with described mechanical indication means main drive shaft end is arranged in the end face center that described pump core has running roller one side; Also have one to be used to be connected in described pump line in addition, and the position is the antiskid card that is in described pump cover channel entrance place.

This utility model can also adopt following technical scheme:

Described running roller position sensor in the pump covering position is described annular guide channel is connected infall with described passage by.

With the concentric connector that is connected as a single entity of described pump seat and pump cover is at the articulated elements of described pump seat and pump cover one side and the spiral fastener of a relative side; And on pump seat on the relative side of the articulated elements that described pump seat and pump cover is hinged or pump cover, positioning piece is arranged.

Described running roller position sensor is input to signal the input port of one Programmable Logic Controller, signal after described Programmable Logic Controller will be handled is imported a motor driver by its output port, described motor driver and then drive described motor and rotate to drive described pump core and rotate.

It is two grooves that the above pump line two ends of described pump cover pass two passages that penetrate described pump cover, and the angular range between the tangent line of every side groove centrage and annular guide channel circle intersection is the 30-60 degree.

Described pad is 1-2.

The conjunction that described pump core has center, running roller one side end face is a permanent-magnet pieces, and described mechanical indication means is passed the main drive shaft of described pump cover centre bore and a end that described conjunction joins is an irony sheet.

Described mechanical indication means is a clockwork.

Advantage and the good effect that the utlity model has are:

1. keep linear peristaltic pump and change tube for transfusion advantage easily, increase tube for transfusion extruding point simultaneously, improve reliability.

2. improve finger-type peristaltic pump pulsation fashion of extrusion, it is successive moving for the extruding of pump line, and the extruding point is many, and the liquid infusion process is level and smooth, the control accuracy height.

3. simplified structure uses rolling member, eliminates sliding friction, improves mechanical efficiency.Reduce manufacturing cost, maintain easily, raise the efficiency.

4. for further improving the infusion pump technology, there is the shortcoming of pulsation in the inherent flow of compensation peristaltic pump, and this patent adopts specific control method and corresponding software, and advanced liquid stream compensation technique is to improve injection quality.

5. dispose mechanical indication mechanism, the convenient observation and control peristaltic pump real time operation process.

Description of drawings

Fig. 1 is one of structural representation of the present utility model;

Fig. 2 is two of a structural representation of the present utility model;

Fig. 3 is a control circuit schematic diagram of the present utility model;

Fig. 4 is a control flow chart of the present utility model.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

As shown in Figure 1, 2, pump seat 1 comprises the rotary pump core 2 of device running roller and drive motors 3 thereof etc., there are the annular guide channel 5 of laying pump line 16 and the hole that can pass the power transmission shaft of clockwork indication mechanism 17 in pump cover 4 inboards, also have two grooves 6 that penetrate and pass pump cover 4 and be connected with annular guide channel 5 for pump line 16 on pump cover 4.There is clockwork indication mechanism 17 in pump cover 4 outsides, use hinge 7 to be connected between pump seat 1 and the pump cover 4, and pump seat 1 edge projection orientation angle 8 has positioning function, guarantee the positional precision when pump seat 1 and pump cover 4 close up.Need suitable pressure between running roller and the pump line 16 during the peristaltic pump operation, bolt fastener 9 is arranged when closing up between pump seat 1 and the pump cover 4 for this reason, promptly the nut portion spinning that will be separately fixed on pump cover 4 and the pump seat 1 with bolt is fixed together, so that operator combine and regulate pressure to suitable numerical value with pump seat 1 and pump cover 4, or employing has the clamp device that pressure is controlled function automatically, guarantee the reliability of infusion pump work, uniformity, stability.Clockwork 17 main drive shafts of pump cover 4 outsides pass the centre bore of pump cover 4, and the iron plate 10 of its end and rotation pump core 2 have near permanent magnet 15 couplings in end face center of running roller one side.The effect of pump cover 4 is to lay pump line 16; in the annular guide channel 5 of laying pump line 16, place rubber-like liner 11; with protection and fixing pump line 16; absorb the size of pump line 16 and the difference of characteristic simultaneously; the pad 11 that is placed in annular guide channel 5 bottoms can prevent that pump line from sliding, and the pad 12 of laying pump line 16 tops can cushion friction and the traction of running roller to pump line 16.The thickness of pad 11,12 and material therefor are according to determining according to pump line size and characteristic.Pump line 16 installs antiskid card 13 additional in the porch of pump cover 4 upper grooves 6, to guarantee the pump line fixed-site.Pump line 16 two ends pass that the angle between every side groove 6 centrages and annular guide channel 5 circle intersection tangent lines is 35 degree in two grooves 6 of pump cover on the pump cover 4.Peristaltic pump is in running, can produce the pulsation of carrying liquid stream, pass a side groove 6 places of being connected at the annular guide channel 5 of pump cover 4 with pump line 16 and be fixed with running roller position sensor 14, adjust motor 3 rotating speeds according to the running roller movement position, special-purpose control software makes transfusion pulsation maintenance stable, realizes compensation, eliminates and the pulsation of reduction fluid flow, transfusion is stable, and flow is accurate.

Pump line 16 two ends pass two grooves, 6 every side channel exits of pump cover and also can be 60 degree or 30 degree with the angular range between side channel and annular guide channel 5 circle intersection tangent lines on the pump cover 4.Pump line 16 two ends pass two passages that penetrate pump cover 4 and also can be two circular hole holes on the pump cover 4.Clockwork 17 main drive shafts of pump cover 4 outsides pass the centre bore of pump cover 4, and its end also can be near screwdriver embedding folder mouthful 15 couplings in end face center that a screwdriver 10 and rotation pump core 2 have running roller one side; Or otherwise clockwork 17 main drive shafts of pump cover 4 outsides pass the centre bore of pump cover 4, and its end also can be a screwdriver embedding folder mouthfuls 10 and rotate pump core 2 and have near the end face center of running roller one side screwdriver 15 couplings.The effect of pump cover 4 is to lay pump line 16, also can only place a rubber-like liner 11 in the annular guide channel 5 of laying pump line 16, or does not place liner 11 and 12.

As shown in Figure 3, the running roller position sensor is input to signal the input port of Programmable Logic Controller, signal after described Programmable Logic Controller will be handled is by its output port input motor driver, and described motor driver and then drive motors rotate to drive described pump core and rotate.

As shown in Figure 4, by man machine interface data will be set and be input to Programmable Logic Controller, concrete controlled step is as follows:

(1) beginning;

(2) gather the data that man machine interface is imported, according to data database storing, the starter motor operation;

(3) judged whether the input of running roller position sensor signal;

(4) if having,, start corresponding automatic deceleration program, after this return step (3) then according to the motor service data;

(5), then continue to judge whether whether to finish transfusion if do not have; If do not finish transfusion, then return step (3);

(6) if finish, then shut down.

Claims

1. end face wriggling transfusion pump, include the pump seat that has central shaft hole, pump cover of end face peristaltic pump and with described pump seat and the relatively-stationary locking member of pump cover, have one to insert described pump seat central shaft hole at described pump seat face of cylinder inner chamber, the cylindrical pump core that axially rotates around cylindrical center, described pump core has motor and speed change gear thereof, it is characterized in that: have one can place the annular guide channel that tube for transfusion is a pump line in described pump cover inboard, and two passages that described pump line is penetrated pass pump cover and be connected with described annular guide channel; One circular orientation pad is arranged in described annular guide channel; One running roller position sensor is arranged on described pump cover; There is a driving shaft to pass the mechanical indication means of described pump cover centre bore in the outside of described pump cover; One male part that is coupled with described mechanical indication means main drive shaft end is arranged in the end face center that described pump core has running roller one side; Also have one to be used to be connected in described pump line in addition, and the position is the antiskid card that is in described pump cover channel entrance place.

2. end face wriggling transfusion pump according to claim 1 is characterized in that: described running roller position sensor in the pump covering position is described annular guide channel is connected infall with described passage by.

3. end face wriggling transfusion pump according to claim 1 and 2 is characterized in that: with the concentric connector that is connected as a single entity of described pump seat and pump cover is at the articulated elements of described pump seat and pump cover one side and the spiral fastener of a relative side; And on pump seat on the relative side of the articulated elements that described pump seat and pump cover is hinged or pump cover, positioning piece is arranged.

4. end face wriggling transfusion pump according to claim 3, it is characterized in that: described running roller position sensor is input to signal the input port of one Programmable Logic Controller, signal after described Programmable Logic Controller will be handled is imported a motor driver by its output port, described motor driver and then drive described motor and rotate to drive described pump core and rotate.

5. end face wriggling transfusion pump according to claim 4, it is characterized in that: it is two grooves that the above pump line two ends of described pump cover pass two passages that penetrate described pump cover, and the angular range between the tangent line of every side groove centrage and annular guide channel circle intersection is the 30-60 degree.

6. end face wriggling transfusion pump according to claim 5 is characterized in that: described pad is 1-2.

7. end face wriggling transfusion pump according to claim 6, it is characterized in that: the conjunction that described pump core has center, running roller one side end face is a permanent-magnet pieces, and described mechanical indication means is passed the main drive shaft of described pump cover centre bore and a end that described conjunction joins is an irony sheet.

8. end face wriggling transfusion pump according to claim 7 is characterized in that: described mechanical indication means is a clockwork.