CN201110955Y - Medical infusion velocity monitoring and controlling device based on machine vision - Google Patents
Medical infusion velocity monitoring and controlling device based on machine vision Download PDFInfo
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- CN201110955Y CN201110955Y CNU2007200888329U CN200720088832U CN201110955Y CN 201110955 Y CN201110955 Y CN 201110955Y CN U2007200888329 U CNU2007200888329 U CN U2007200888329U CN 200720088832 U CN200720088832 U CN 200720088832U CN 201110955 Y CN201110955 Y CN 201110955Y
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Abstract
The utility model discloses a medical transfusion speed monitoring and controlling apparatus based on machine vision, belonging to the field of medical appliance. The medical transfusion speed monitoring and controlling device comprises an image collecting device, a parameter input device, a data processor, a data display, a transfusion speed controller and an alarm. The data processor is composed of an image processing module, a data display module, a data analysis module, an alarm module and a transfusion speed control module. The medical transfusion speed monitoring and controlling apparatus adopts image treatment method to calculate the transfusion speed, which is steady and reliable and avoids interference from the outside radiation source in current popular infrared detection methods and avoids imprecise detection and complex operation resulted from that the transfusion bottle is not the same with the transfusion bag in weight in the detection methods based on weighting principle. The medical transfusion speed monitoring and controlling apparatus is capable of automatically regulating the transfusion speed to be almost the same with the expected transfusion speed and can give an alarm in the cases of out of medical solution and other incidents during the transfusion; therefore the medical transfusion speed monitoring and controlling apparatus can relieve the pain of the patient, reduce the work load of the medical staff and reduce medical accidents.
Description
Technical field
The utility model belongs to medical instruments field, is specifically related to a kind of medical transfusion speed monitoring and control device based on machine vision, and this device can cooperate the medical transfusion apparatus to use, and is a kind of auxiliary medical equipment that is used for hospital's transfusion.
Background technology
Venous transfusion is of a clinical treatment drug treatment technology commonly used, is to utilize the interior liquid pressure of woven hose than the big principle of human vein intravascular fluid body pressure, and soup is directly inputted to human vein by conduit.In infusion process, the speed that liquid enters the sufferer vein directly has influence on the result of treatment of medicine to sufferer, and excessive velocities may cause sufferer to be poisoned, can be in heart failure when serious; Speed is crossed and dose then may take place slowly prolonged transfusion time not enough or meaninglessly, makes result of treatment influenced, increases medical worker's workload, makes troubles to the patient simultaneously.At present, the mode that the routine clinical transfusion generally adopts traditional extension bottle to infuse in the hospital.Hanging the bottle transfusion needs medical personnel to observe with eyes, simultaneously, needs medical personnel to adjust liquid drop speed with intuition by hand according to the situation of doctor's advice and sufferer by rule of thumb.Under traditional manual adjustments mode, transfusion speed is difficult for accurately control, and it is big to adjust error, and fluctuation also may occur at the infusion process medium velocity.In addition, traditional infusion model needs the surplus of medical personnel's artificial observation medicine, so that in time finish infusion process when medicine uses up.If medical worker's carelessness, when using up, medicine in time do not stop, very likely cause patient the blood back phenomenon to occur, and, under traditional infusion model, for avoiding in infusion process often needing patient oneself or retinue or medical personnel to monitor constantly because of fortuitous event causes transfusion unusual (as: syringe needle is deviate from or stopped up), this can increase misery to patient undoubtedly, increases burden for families of patients and medical personnel.
For overcoming the above-mentioned defective that manual infusion model exists, occurred the device of some detections and control transfusion speed on the market, but these devices are inperfect in every way, or technically also are weak, or be that cost is higher.The detection of transfusion speed and control need to consider some factors from the technological means that realizes, comprising: effective detection of (1) infusion flow rate.Because the speed of transfusion is subjected to the concentration of soup, the influence of tube material characteristic and tube wall smooth degree, how detecting flow velocity effectively is the factor that need are considered.(2) control of infusion flow precision.The accuracy requirement that how to reach the control flow velocity is the cost of opertaing device suitably again, also is the factor that need are considered.(3) control of infusion flow plant bulk.The plant bulk that generally adopts is bigger than normal slightly at present, and some even employing tripping device realize that how to change structure, the reduction means size also is a considerable factor.At present, patent about detection of medical infusion speed and flow control also has a lot, as publication number is that the patent documentation of CN2875460 has adopted the infrared light receiving/transmitting device, the principle of utilizing the liquid interior focusing to have refraction comes liquid is detected, such detection method has the advantage of easy realization, but the infrared light receiving/transmitting device is subjected to the interference of extraneous radiation source easily, and the requirement of the installation infrared detection apparatus and process on the Mo Feishi dropper is high, and to degree of accuracy is installed very high requirement is arranged.In case dropper is in askew status, sensor just can not detect the drop of whereabouts exactly.In addition, also having in the partial monopoly document has adopted weighing principle as current-limiting apparatus, though this method principle is simple, easily realize, but because material that the infusion bottle of different manufacturers production and infusion bag are adopted and technology is different, its weight exists difference, thereby measuring accuracy has been produced certain influence.If need do initialization process to weight parameter when being provided with at every turn, then increased the complicacy of operation.The equipment that also has some infusion pumps and so in addition on the market, but because of costing an arm and a leg, only limit to mostly use at high-end intensive care unit (ICU) or operating room (OR).
Summary of the invention
The purpose of this utility model is to provide a kind of medical transfusion speed monitoring and control device based on machine vision, this device can detect and control the speed of transfusion more exactly, and can make alarm to the abnormal conditions that may occur in the infusion process such as no soup state, help patient to the absorption of medicine and minimizing medical personnel's nursing work load.
Medical transfusion speed monitoring and control device based on machine vision that the utility model provides is characterized in that: this device comprises image collecting device, parameter input device, data processor, data presentation device, drips speed control system device and alarm device;
Parameter input device, data presentation device and alarm device are installed on the panel of housing, image collecting device, data processor and a speed control system device are fixed on enclosure interior, housing is provided with through hole, and image collecting device is positioned at the top of dripping speed control system device;
Image collecting device is used to gather the view data of dripping dropping liquid in the tube of woven hose, gives data processor with the image data transmission of gathering;
Parameter input device is used to receive user's input, and sends the information that receives to data processor respectively;
Data processor is used to receive the view data that image collecting device sends, calculate a speed in real time of soup according to the view data that receives, also receive the expectation that parameter input device sends and drip fast data, and it is transferred to data presentation device, transmit to data presentation device simultaneously and require it is shown to user's steering order; Data processor will expect to drip fast data and an actual measurement fast data compare and analyze, draw the information of magnitude relationship between the two, and produce whether require to change the steering order of dripping speed and/or the steering order of corresponding alarm according to this information, steering order is sent to respectively drip a speed control system device and an alarm device;
Data presentation device is used to receive steering order that data processor sends and data message etc., and according to steering order the data message that receives is shown to the user;
Drip speed control system device and link to each other with data processor, be used to receive steering order that data processor sends and actual measurement and drip the absolute value data information that the speed difference is dripped in speed and expectation, and a speed is adjusted according to this instruction and data message by driving circuit;
The alarm device is used to receive the steering order that data processor sends, and produces corresponding prompt messages according to this steering order.
When the utility model device uses, transfusion drip tube is stuck in gathers the cover backboard and contain in the middle of the collection cover of image collecting device, can guarantee that like this distance of image collecting device and dropper and angle are constant, to gather the cover backboard simultaneously and paint solid color over against the one side of image collecting device, make the image of camera collection have monochromatic background, can reduce of the interference of complicated background noise Information Monitoring.Contain the view data of drop information by the continuous acquisition apace of data acquisition module, in order to avoid drop omission problem.Thereby monochromatic background is convenient to analyze droplet morphology and is carried out accurate counting from view data, even if drip tube inclination has taken place, and the density of soup and color have taken place to change and can the counting precision of counting assembly do not exerted an influence.This device design is gone up and is adopted the mode of single side sampling to carry out image sampling, so that the installation when using.The infrared sensor that the utility model can more generally adopt has higher infusion counting accuracy and reliability, thereby improves the control accuracy of infusion flow, has solved the deficiency of infrared sensor to a certain extent.
Description of drawings
Fig. 1 is that the utility model is based on the medical transfusion speed monitoring of machine vision and the structural representation of control device;
The synoptic diagram that Fig. 2 cooperates transfusion drip tube to use for the utility model device;
Fig. 3 is the structural representation of the employed image collecting device of the utility model embodiment;
Fig. 4 is the structural representation of employed speed control system device of the utility model embodiment;
Fig. 5 is the workflow diagram of the utility model embodiment.
Embodiment
As depicted in figs. 1 and 2, the utility model housing 7 of comprising image collecting device 1, parameter input device 2, data processor 3, data presentation device 4, drip speed control system device 5, alarm device 6 and be used for said apparatus and data processor are integrated based on monitoring of the medical transfusion speed of machine vision and control device.
Data disaply moudle 32 is used to receive the data that parameter input device 2 and image processing module 31 send, and it is transferred to data presentation device 4, transmits to data presentation device 4 simultaneously to require it is shown to user's steering order.
Data analysis module 33 is used to receive the data (actual measurement is dripped fast) that data (speed is dripped in expectation) that parameter input device 2 sends and image processing module 31 send, and both are compared and analyze, draw the information of magnitude relationship between the two, and this information sent to drip a speed control molding piece 35, to survey the parameter of dripping speed and some prior setting simultaneously compares, draw the information that the magnitude relationship of speed and these parameters is dripped in actual measurement, and send this information to alarm module 34, wherein, the parameter of setting in advance can be represented following meaning: dripping of medical personnel's expectation is fast, soup has dripped off soon drips speed, the speed that syringe needle is deviate from appears, the speed that the appearance syringe needle stops up or other may damage or cause some fast values of malpractice to patient body.
Alarm module 34 is used to receive the information that speed and the magnitude relationship of some parameter of setting are in advance dripped in actual measurement that data analysis module 33 sends, and produce the steering order of corresponding alarm according to this information, this steering order is sent to alarm device 6, as: drip the drip speed of speed if receive the information that data analysis module 33 sends for actual measurement greater than medical personnel's expectation, then send the steering order that requires to carry out alarm with buzzer to alarm device 6, wherein, the information of buzzer representative is dripped the speed of dripping that speed has surpassed medical personnel's expectations for actual measurement.
Dripping speed control molding piece 35 is used to receive actual measurement that data analysis module 33 sends and drips the information that the magnitude relationship of speed is dripped in speed and expectation, and produce whether require to change a steering order of dripping speed according to this information, and steering order sent to drip a speed control system device 5, if it is fast to require change to drip, then will surveys an absolute value that drips a speed and an expectation speed difference and also send a speed control system device 5 to.The method that produces steering order can be preferably as follows mode: as if what receive is that fast little information is dripped in an actual measurement speed ratio expectation, then produce and require to make a steering order that speed speeds, if what receive is that a speed ratio expectation big information of speed is dripped in actual measurement, then produce and require to make a steering order that speed slows down, if what receive is that actual measurement is dripped speed and expected to drip the information that speed equates, then produces to change and drip fast steering order.
Dripping speed control system device 5 and data processor 3 links to each other by driving circuit, drip speed control system device 5 and be used to receive steering order and the actual measurement speed and the data messages such as absolute value of expecting to drip fast difference that a speed control molding piece 35 sends, and control the action of motor according to this instruction and data message, the final realization adjusted dripping speed, reaches to make an actual measurement speed drip the identical or approaching purpose of speed with expectation.
For a more detailed description to the concrete formation of an image collecting device 1 and a speed control system device 5 for example respectively more below.
As shown in Figure 3, image collecting device 1 comprises camera 11, gathers cover 12, gathers cover backboard 13 and light source 14.Gather cover backboard 13 and gather the position that cover 12 lays respectively at the both sides of woven hose.Camera 11 is fixed in to be gathered in the cover 12, is used for absorbing the interior view data of dropper interested and is transferred to data in the image processing module 31 of data processor 3 by data line; Gather cover 12 and be used for fixing camera 11, when view data in the tube is dripped in the camera collection transfusion, gather cover and keep camera constant to a distance of dripping tin; Gather cover backboard 13 and be coated with monochromatizing (the painted black effect can be better), make the Useful Information content of camera collection not be subjected to or be subjected to less the interference of background, improve the serviceability of gathering content.Light source 14 is installed in a side of gathering cover 12, is used to regulate the brightness of camera 11 shooting picture, to guarantee the sharpness of photographic images, also can not use light source as the case may be.
As shown in Figure 4, drip speed control system device 5 and comprise motor 51, shaft joint 52, ball-screw 53, feed screw nut 54, speed governing rod 55 and dropper fixed mount 56.Dropper fixed mount 56 is used for fixing dropper 81, and making can run-off the straight when dropper 81 is subjected to the extruding of speed governing rod 55.Motor 51 links to each other by shaft joint 52 with ball-screw 53, and feed screw nut 54 is fixed on the ball-screw 53, and feed screw nut 54 links to each other with speed governing rod 55.During motor 51 motions, drive ball-screw 53 rotations by shaft joint 52, the rotation of ball-screw 53 drive again feed screw nut 54 left/right motion, feed screw nut 54 left/right motion impel speed governing rod 55 correspondingly left/move right, reach the purpose that makes medicine liquid droplet speed reduce/increase.
When using this device, at first the fixed support 72 of this device by housing 7 tops is fixed on the suitable position of infusion support, also be fixed on woven hose 8 on the infusion support simultaneously, medical personnel are provided with the initial speed of dripping and are minimal value, and begin to patient infusion, simultaneously, start this device, drip the speed value by parameter input device 2 input expectations, device can begin the transfusion drip speed in the infusion process is calculated automatically, show, simultaneously, can also accurately control transfusion drip speed/adjust, in addition, device can be reported to the police automatically monitoring when having dangerous situation and taking place.
Embodiment:
Below enforcement of the present utility model is described in further detail, the utility model is applicable to the common transfusion medical apparatus with Mo Feishi dropper.Among this embodiment, use this device that children that have a heart disease are carried out infusion treatment, user's requirement comprises: the expectation transfusion drip speed is 20 droplets/minute, simultaneously, in the process of transfusion, can utilize this device that transfusion drip speed is detected, if a speed (20 droplets/minute) of transfusion drip speed that actual measurement is arrived and expectation is not simultaneously, this device can be adjusted dripping speed automatically, to reach identical or approaching with drip fast (20 droplets/minute) of expectation.In addition, the user think in infusion process drip speed for 4-20 drip/minute be normal condition, then, if in infusion process, when one of listed situation occurring in the following table table 1, this device can carry out alarm to the user by sending different sound, and wherein, every kind of sound type has been represented different meaning (different alarm content):
The various needs of table 1 carry out the situation of alarm
As shown in Figure 3, utilize plastic processing collection cover 12 and gather cover backboard 13, gather cover backboard 13 and gather the position that cover 12 lays respectively at the both sides of woven hose 8, camera 11 and light source 14 are fixed on the inside of gathering cover 12, the adjustable focus camera lens exposes towards a transfusion tube from the circular hole of gathering cover 12, light source 14 adopts white light source, can be placed on the suitable position of gathering cover 12 inside as required.Camera 11 is connected with data line, and the other end of data line is connected with image processor 3.Gather cover backboard 13 and face the painted black that tube is dripped in transfusion.
As shown in Figure 4, utilize plastic processing dropper fixed mount 56, making can run-off the straight when the dropper 81 of woven hose 8 lower ends is subjected to the extruding of speed governing rod 55.Motor 51 links to each other by shaft joint 52 with ball-screw 53, and feed screw nut 54 is fixed on the ball-screw 53, and feed screw nut 54 links to each other with speed governing rod 55.During motor 51 motions, drive ball-screw 53 rotations by shaft joint 52, the rotation of ball-screw 53 drive again feed screw nut 54 left/right motion, feed screw nut 54 left/right motion impel speed governing rod 55 correspondingly left/move right, thereby increase/reduce pressure, carry out the control of an infusion flow/speed with this to the transfusion tube wall.Motor 51 links to each other with data processor 3 by driving circuit.In the present embodiment, stepper motor 51 clockwise/be rotated counterclockwise 1 circle representative make speed governing rod 55 left/move right 1 centimetre, correspondingly, drip speed and reduce/increase 1 in 1 minute.
As shown in Figure 5, the transfusion speed monitoring with the workflow of control device is:
(1) fluid delivery apparatus and this Unit Installation and initialization setting.This device is fixed on the correct position of infusion support by fixed support 72, and woven hose 8 also is fixed on the infusion support, simultaneously, the initial speed of dripping is set is minimal value.
(2) medical personnel are dripped 20 droplets/minute of speed by the expectation of parameter input device 2 input soups, and should expect that a speed sent data disaply moudle 32 and data analysis module 33 to;
(3) image in the tube is dripped in picked-up.Utilize 12 pairs of images that drip in the tube of camera to take in real time, the realtime image data of taking is transferred to image processing module 31;
(4) utilize image process method to calculate a speed in real time of soup.It is as follows to calculate the concrete steps and the method for dripping speed:
(4.1) image pre-service.Pre-service comprises: every two field picture degree of comparing is strengthened and a series of processing such as noise reduction, and the method for processing can be with the general contrast enhancing and the image processing method of noise reduction;
(4.2) extract background image.The method of use inter-frame difference and two-value frame difference mask obtains the background image of standard (stablizing constant);
(4.3) be partitioned into the dropping liquid of motion.Used method is the background subtraction method, promptly deducts the background image that step (4.2) is extracted with current frame image;
(4.4) calculate a speed in real time.The time interval that obtains detecting between current dropping liquid and the last dropping liquid with said method according to record is 12 seconds (0.2 minute), then calculate dropping liquid to drip speed (speed is dripped in actual measurement) in real time be 5 droplets/minute.
(5) show that dripping speed in real time drips information such as speed with expectation.The expectation that data disaply moudle 32 receiving steps 2 and step (4.4) send is respectively dripped after 20 droplets/minute of speed and actual measurement drip 5 droplets/minute of speed, this two number is reached the steering order that requires to show these two data according to this send data presentation device 4 to, data presentation device 4 is given the user with these two data presentation.
(6) analyze that speed is dripped in expectation and speed is dripped in actual measurement, produce and sending controling instruction (comprising alarm instruction and the speed control system of dripping instruction) and data message.Concrete steps and method are as follows:
(6.1) expectation that sends respectively of data analysis module 33 receiving steps 2 and step (4.4) is dripped 20 droplets/minute of speed and 5 droplets/minute of speed are dripped in actual measurement;
(6.2) analyze the magnitude relationship that the parameter of 5 droplets/minute of speed and several prior settings (0,4 droplet/minute, 20 droplets/minute, 40 droplet/minute) is dripped in actual measurement, find 5 droplets/minute within normal conditions (20-40 drip/minute) scope of transfusion, then produce and send and do not require the steering order that produces alarm to alarm device 6.
(6.3) find that by analysis actual measurement drips after 5 droplets/minute of speed drip 20 droplets/minute of speed less than expectation, produce to require increase drip the steering order of speed, and will instruct and survey and drip 5 droplets/minute of speed and send to a speed control system device 5 with expecting an absolute value 15 of fast 20 droplets/minute clock correction.
(7) produce prompt messages, adjust medicine liquid droplet speed.The instruction that alarm device execution in step (6.2) produces is not sent prompt messages to the user; Drip the instruction that speed control system device 5 execution in step (6.3) produce, drive motor 51 is rotated counterclockwise certain number of turns (as: 15 circles,), the motion of motor 51 finally makes the speed governing rod move right 15 centimetres, reduced the extruding of 55 pairs of droppers 81 of speed governing rod, made the flow that passes through dropper 81 in 1 minute increase about 15 purpose thereby reach.
(8) drip speed if medical personnel want to change expectation, then repeat above-mentioned steps (2)-(7), otherwise, above-mentioned steps (3)-(7) repeated.
After about 1 hour, the speed in real time that step (4) calculates soup is 0, after this, step (6) analyze obtain this drip in real time speed 0 do not drip at the normal fast 4-20 of dripping/minute scope within, drawing may be the conclusion that soup has dripped off soon, then the alarm device produces prompt messages with buzzer, and to cause medical personnel's attention, reminding this patient of medical personnel to have pulled out pin maybe needs to have changed dressings liquid.
Claims (3)
1, a kind of medical transfusion speed monitoring and control device based on machine vision is characterized in that: this device comprises image collecting device (1), parameter input device (2), data processor (3), data presentation device (4), drips speed control system device (5) and alarm device (6);
Parameter input device (2), data presentation device (4) and alarm device (6) are installed on the panel of housing (7), image collecting device (1), data processor (3) and a speed control system device (5) are fixed on housing (7) inside, housing (7) is provided with through hole, and image collecting device (1) is positioned at the top of dripping speed control system device (5);
Image collecting device (1) is used to gather the view data of dripping dropping liquid in the tube of woven hose, gives data processor (3) with the image data transmission of gathering;
Parameter input device (2) is used to receive user's input, and sends the information that receives to data processor (3) respectively;
Data processor (3) is used to receive the view data that image collecting device (1) sends, calculate a speed in real time of soup according to the view data that receives, also receive the expectation that parameter input device (2) sends and drip fast data, and it is transferred to data presentation device (4), transmit to data presentation device (4) simultaneously and require it is shown to user's steering order; Data processor (3) will expect to drip fast data and an actual measurement fast data compare and analyze, draw the information of magnitude relationship between the two, and produce whether require to change the steering order of dripping speed and/or the steering order of corresponding alarm according to this information, steering order is sent to respectively drip a speed control system device (5) and an alarm device (6);
Data presentation device (4) is used to receive steering order that data processor (3) sends and data message etc., and according to steering order the data message that receives is shown to the user;
Drip speed control system device (5) and link to each other with data processor (3), be used to receive steering order that data processor (3) sends and actual measurement and drip speed and drip the poor absolute value data information of speed, and a speed is adjusted according to this instruction with expectation by driving circuit;
Alarm device (6) is used to receive the steering order that data processor (3) sends, and produces corresponding prompt messages according to this steering order.
2, device according to claim 1 is characterized in that: image collecting device (1) comprises camera (11), gathers cover (12), gathers cover backboard (13) and light source (14); Gather cover backboard (13) and cover the position that (12) lay respectively at the housing through-hole both sides with collection; Camera (11) is fixed in to be gathered in the cover (12), and it is monochromatic gathering cover backboard (13), and light source (14) is installed in a side of gathering cover (12).
3, device according to claim 1 and 2 is characterized in that: drip speed control system device (5) and comprise motor (51), shaft joint (52), ball-screw (53), feed screw nut (54), speed governing rod (55) and dropper fixed mount (56);
Motor (51) links to each other by shaft joint (52) with ball-screw (53), feed screw nut (54) is fixed on the ball-screw (53), feed screw nut (54) links to each other with speed governing rod (55), and dropper fixed mount (56) and speed governing rod (55) lay respectively at two sides of housing through-hole, and the position is relative.
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| CNU2007200888329U CN201110955Y (en) | 2007-12-07 | 2007-12-07 | Medical infusion velocity monitoring and controlling device based on machine vision |
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