CN2776426Y

CN2776426Y - Medical transfusion protection alarming device

Info

Publication number: CN2776426Y
Application number: CN 200520089628
Authority: CN
Inventors: 汪玉坤; 焦仁刚; 周春荣; 柳永诠
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-11
Filing date: 2005-03-11
Publication date: 2006-05-03
Anticipated expiration: 2015-03-11

Abstract

The utility model provides a medical transfusion protection alarm device, which is installed on a transfusion catheter. The transfusion catheter is penetrated through a sensor detection area of a detection device and is positioned in the clamping part of a shutting device of the transfusion catheter. Signals detected by a sensor are sent to the input terminal of a main control circuit through the signal output terminal of the detection device; the output terminal of the main control circuit is electrically connected with an executive element in the shut-off device of the transfusion catheter. The utility model has the characteristics of simple operation and convenient use and the characteristic that the utility model can be jointly used with a calling system in a hospital.

Description

Medical infusion protection alarm device

Technical field

This utility model relates to a kind of medical alarm device, specifically a kind of medical infusion protection alarm device that can detect the infusion situation automatically and can close tube for transfusion automatically.

Background technology

At present, hospital or clinic mostly need relative accompany, or need the nurse to make a round of visits intravenous the time carrying out to the patient, and to prevent the patient under the situation of unmanned nurse, medicinal liquid is totally lost, and is directed in the air admission patient body, causes malpractice.The speed that drips speed also can influence the human heart ability to bear, and the nurse will generally judge its dropping speed with the method for estimating at present according to the different definite speed of dripping of patient's age, the state of an illness and medication when carrying out intravenous injection for the patient.

The utility model content

The purpose of this utility model is to provide a kind of medical infusion protection alarm device, can detect the infusion situation, can finish or have under the situation of air in transfusion to close tube for transfusion automatically, and can detect dropping speed.

For achieving the above object, the technical solution adopted in the utility model is:

This utility model is installed on the tube for transfusion, tube for transfusion is placed through the sensor district of checkout gear, and be positioned in the clamping section of tube for transfusion shutoff device, sensor to the signal output part that installs after testing of signal be connected to the input of governor circuit, the outfan of governor circuit is electrically connected with executive component in the tube for transfusion shutoff device.

Described tube for transfusion shutoff device comprises: be movably installed in the locating rod on the hood inner support, the one end places out outside the hood, the other end is provided with the dop that can be placed on the grab, this grab rotates on the base plate that is installed in the hood by torsion spring, grab is connected with the output block of executive component, and the control line of this executive component is connected to the outfan of governor circuit; The middle part of locating rod is rotationally connected by movable connecting rod, locating rod rotating shaft and the cam that is fixed in the hood, one rotating shaft forms pliers shape binding clasp with first clamp arm that is rotationally connected by this rotating shaft and second clamp arm, the rearward end that is equivalent to the pliers handle at two clamp arms is fixedlyed connected with the two ends of extension spring respectively, cam is located between two clamp arms, and be held on two clamp arms, the other end of two clamp arms is located at relatively on the two side of groove inboard and is formed the clamping section; Described executive component is an electric magnet, and grab is arranged in the actuating length of electric magnet mandrel;

Described checkout gear has bubble and dropping liquid discriminator circuit, its structure is: the outfan of first sensor is connected to the positive input terminal of second comparator, the outfan of second comparator links to each other with the positive input terminal of the 3rd comparator, the unsteady reference level circuit that first diode, the 4th electric capacity and the 3rd resistance are formed is connected to the negative input end of second comparator and the 3rd comparator respectively, the outfan of the 3rd comparator is the bubble signal output part, is connected to the input pin of governor circuit central processing unit; Described checkout gear also has the dropping liquid testing circuit, its structure is: the outfan of second pick off is connected to the negative input end of first comparator through the 3rd audion, the 6th electric capacity, the 8th resistance, the outfan of first comparator links to each other with the positive input terminal of the 4th comparator, the unsteady reference level circuit that the 9th resistance and the 7th electric capacity form is connected to the positive input terminal of first comparator, be connected to the negative input end of the 4th comparator again through the 4th diode, the outfan of the 4th comparator is the dropping liquid signal output part, is connected to the input pin of governor circuit central processing unit;

The structure of described governor circuit is: be the control core with the central processing unit, its input pin links to each other with the signal output part of checkout gear respectively, the output pin of central processing unit is connected to the control line of the executive component in the tube for transfusion shutoff device by transistor amplifier, and the alarm signal output ends mouth of central processing unit links to each other with host computer or master control set.

The utlity model has following advantage:

1. safe and reliable.This utility model detects the dropping liquid situation by checkout gear, by governor circuit the tube for transfusion shutoff device is controlled, the medicinal liquid that can block automatically in the tube for transfusion flows, solve the patient and when carrying out intravenous injection, needed the drawback that personnel accompany and attend to or the nurse makes a round of visits, avoided having alleviated medical personnel and patient's burden owing to carelessness causes the intravital malpractice of air admission patient;

2. have and detect the function of dripping speed, make patient's medication more scientific and reasonable;

3. simple to operate, easy to use;

4. can unite use with the calling system of hospital.This utility model by connection can with upper machine communication, unite use with other online equipment, can reduce medical personnel labor intensity, improve medical personnel's work efficiency and work quality.

Description of drawings

Fig. 1 is this utility model stereoscopic figure;

Fig. 2 is the outside view of installing of this utility model checkout gear;

Fig. 3 is an internal structure sketch map of the present utility model;

Fig. 4 is the internal structure sketch map of this utility model when the normal infusion state;

Fig. 5 is the internal structure sketch map of this utility model when closing the tube for transfusion state automatically;

Fig. 6 is the electrical schematic diagram of this utility model governor circuit;

Fig. 7 is the electrical schematic diagram of this utility model checkout gear.

The specific embodiment

Shown in Fig. 1～3, the utlity model has checkout gear, governor circuit and tube for transfusion shutoff device, integral installation is in hood 10, the front upper of hood has can make tube for transfusion 11 be placed through wherein groove, in the present embodiment groove is divided into two parts up and down, hood 10 intermediary panels are provided with drop counting display screen, device such as SR and display lamp, top and bottom at groove, the first～the second infrared-emitting diode VD1～VD2 of two infrared photoelectric sensors and the first～the second infrared reception audion Q1～Q2 are installed on the two side of groove inboard respectively relatively, the tube for transfusion shutoff device is located at the top in the hood, locating rod 1 is movably installed on the support in the hood 10, one end of locating rod 1 places out hood outward for the user operation, the other end is provided with the dop that can be placed on the grab 8, this grab 8 rotates on the base plate that is installed in the hood by torsion spring 9, grab 8 is connected with the output block of executive component, this executive component is connected to the outfan of governor circuit, present embodiment adopts electric magnet 7 as executive component, and grab 8 is arranged in the actuating length of electric magnet 7 mandrels; The middle part of locating rod 1 is rotationally connected with the cam 3 that is fixed in the hood 11 by movable connecting rod 12, locating rod rotating shaft 2, one rotating shaft 13 forms pliers shape binding clasp with first clamp arm 4 that is rotationally connected by this rotating shaft 13 and second clamp arm 6, the rearward end that is equivalent to the pliers handle at two clamp arms is fixedlyed connected with the two ends of extension spring 5 respectively, cam 3 is located between two clamp arms, and be held on two clamp arms, the other end of two clamp arms is located at relatively on the two side of groove inboard and is formed the clamping section, and tube for transfusion 11 can be placed through wherein;

As shown in Figure 7, checkout gear comprises bubble and dropping liquid discriminator circuit, its structure is: first sensor (being first infrared photoelectric sensor in the present embodiment) receives audion Q1 by the first infrared light emitting diode VD1 and first infrared light and forms, the emitter stage of i.e. first infrared light reception of the outfan of first infrared photoelectric sensor audion Q1 is connected to the first-order filtering circuit that is composed in parallel by second resistance R 2 and first capacitor C 1, the outfan of this emitter stage also links to each other with the positive input terminal of the second comparator U1B, the negative input end datum of this comparator is a unsteady level, by the first diode D1, the circuit that the 4th capacitor C 4 and the 3rd resistance R 3 form provides, between the input of the outfan of the two or two comparator U1B and the 3rd comparator U2A, be connected a capacitor C 12, its effect is the capacity of resisting disturbance that improves circuit, the pulse signal that bubble and medicinal liquid drip off is connected to the input pin P3.3 of governor circuit central processing unit U5A by bubble signal output part PL2 output; Checkout gear also has the dropping liquid testing circuit, its structure is: second pick off (being second infrared photoelectric sensor in the present embodiment) receives audion Q2 by the second infrared light emitting diode VD2 and second infrared light and forms, the second audion Q2 and the 3rd audion Q3 form Darlington transistor, to improve detection sensitivity, the dropping liquid signal is through the 6th capacitor C 6, the 8th resistance R 8 is coupled and is differentiated by the first comparator U1A, the datum of the first comparator U1A negative input end is by the 9th resistance R 9, the 7th capacitor C 7, the 4th diode D4 and resistance R 12 provide, and the dropping liquid signal after the discriminating is connected to the input pin P3.2 of governor circuit central processing unit U5A by the counting pulse signal of dropping liquid signal output part PL1 output dropping liquid after the 4th comparator U2B shaping.

As shown in Figure 6, the structure of governor circuit is for central processing unit U5A serving as the control core, its input pin P3.2, P3.3 link to each other with the signal output part of checkout gear respectively, the output pin P3.7 of central processing unit U5A is connected to the control line of the executive component in the tube for transfusion shutoff device by transistor amplifier, the alarm signal output ends mouth P3.5 of central processing unit U5A links to each other with host computer or master control set, unites use with the calling system of hospital; Also be provided with the audible alarm circuit in the governor circuit, promptly the outfan P3.4 of central processing unit U5A links to each other with the control line of an audible alarm unit; Be provided with the liquid droping speed display device in the governor circuit, output interface P1.0～the P1.7 that is central processing unit U5A links to each other with the segment encode control end of charactron display, the position control end of charactron display links to each other with power end by triode amplifier, the base stage of audion links to each other with position output control terminal P3.0 or the P3.1 of central processing unit U5A, and the reseting pin RST of central processing unit U5A is connected to the power end of checkout gear by SR S1A; Between the signal output part of the power end of checkout gear and checkout gear, be provided with display lamp, be respectively the second display lamp LED2 that shows bubble-free first display lamp LED1 and dropping liquid counting.

Work process of the present utility model is:

As shown in Figure 4, the operator pushes locating rod 1 in the hood earlier, be stuck on the grab 8, when promoting locating rod 1, drive rotating shaft 3 rotations by locating rod rotating shaft 2 and movable connecting rod 12 and push first clamp arm 4 and second clamp arm 6 aside, grab 8 guarantees locating rod 1 is fixed by torsion spring 9, guarantee that simultaneously extension spring 5 is in tensioning state, then tube for transfusion 11 is placed through in the groove of casing outside, between the first infrared-emitting diode VD1 and the first infrared reception audion Q1, pass through, and dropping funnel is passed through between the second infrared-emitting diode VD2 and the second infrared reception audion Q2; Can enter normal infusion test state after powering on; Press SR S1A before the counting, give the zero clearing of charactron display by central processing unit U5A, when the downward liquid flow in the tube for transfusion 11, the charactron display begins counting, dropping liquid pulse of every meter, and the second display lamp LED2 just glimmers once.

As Fig. 4, shown in 5, when transfusion is near completion or in the tube for transfusion 11, enter bubble, the liquid level that descends is during by infrared infrared photoelectric sensor, infrared photoelectric sensor can detect liquid level automatically, by checkout gear this signal is sent to governor circuit, governor circuit sends instruction according to detected signal and gives electric magnet 7, electric magnet 7 begins action, its mandrel stretches out and promotes grab 8 displacements, locating rod and grab 8 are broken away from, and under the restoring force effect of extension spring 5, first clamp arm 4 and second clamp arm 6 have one to clamp action, clamp the tube for transfusion 11 that is placed through therebetween tightly, liquid level in the tube for transfusion 11 is no longer descended, thereby close tube for transfusion 11, governor circuit output buzzer warning signal, light alarm lamp simultaneously, informing that transfusion finishes or have bubble to enter; Or ought no longer glimmer by the second display lamp LED2, behind the time-delay certain hour, governor circuit also can send instruction and close tube for transfusion 11 for electric magnet 7, and sound and light alarm is arranged.

Claims

1. a medical infusion is protected alarm device; be installed on the tube for transfusion; it is characterized in that: tube for transfusion (11) is placed through the sensor district of checkout gear; and be positioned in the clamping section of tube for transfusion shutoff device; sensor to the signal output part that installs after testing of signal be connected to the input of governor circuit, the outfan of governor circuit is electrically connected with executive component in the tube for transfusion shutoff device.

2. by the described medical infusion protection of claim 1 alarm device, it is characterized in that: described tube for transfusion shutoff device comprises: be movably installed in the locating rod (1) on hood (10) inner support, the one end places out outside the hood, the other end is provided with the dop that can be placed on the grab (8), this grab (8) rotates on the base plate that is installed in the hood by torsion spring (9), grab (8) is connected with the output block of executive component, and the control line of this executive component is connected to the outfan of governor circuit; The middle part of locating rod (1) is rotationally connected by movable connecting rod (12), locating rod rotating shaft (2) and the cam (3) that is fixed in the hood (11), one rotating shaft (13) forms pliers shape binding clasp with first clamp arm (4) that is rotationally connected by this rotating shaft (13) and second clamp arm (6), the rearward end that is equivalent to the pliers handle at two clamp arms is fixedlyed connected with the two ends of extension spring (5) respectively, cam (3) is located between two clamp arms, and be held on two clamp arms, the other end of two clamp arms is located at relatively on the two side of groove inboard and is formed the clamping section.

3. by the described medical infusion protection of claim 2 alarm device, it is characterized in that: described executive component is electric magnet (7), and grab (8) is arranged in the actuating length of electric magnet (7) mandrel.

4. by the described medical infusion protection of claim 1 alarm device; it is characterized in that: described checkout gear has bubble and dropping liquid discriminator circuit; its structure is: the outfan of first sensor is connected to the positive input terminal of second comparator (U1B); the outfan of second comparator (U1B) links to each other with the positive input terminal of the 3rd comparator (U2A); first diode (D1); the unsteady reference level circuit that the 4th electric capacity (C4) and the 3rd resistance (R3) are formed is connected to the negative input end of second comparator (U1B) and the 3rd comparator (U2A) respectively; the outfan of the 3rd comparator (U2A) is bubble signal output part (PL2), is connected to the input pin (P3.3) of governor circuit central processing unit (U5A).

5. by the described medical infusion protection of claim 4 alarm device; it is characterized in that: described checkout gear also has the dropping liquid testing circuit; its structure is: the outfan of second pick off is through the 3rd audion (Q3); the 6th electric capacity (C6); the 8th resistance (R8) is connected to the negative input end of first comparator (U1A); the outfan of first comparator (U1A) links to each other with the positive input terminal of the 4th comparator (U2B); the unsteady reference level circuit that the 9th resistance (R9) and the 7th electric capacity (C7) form is connected to the positive input terminal of first comparator (U1A); be connected to the negative input end of the 4th comparator (U2B) again through the 4th diode (D4); the outfan of the 4th comparator (U2B) is dropping liquid signal output part (PL1), is connected to the input pin (P3.2) of governor circuit central processing unit (U5A).

6. by claim 4 or 5 described medical infusion protection alarm devices, it is characterized in that: the described first sensor and second pick off are infrared photoelectric sensor.

7. by the described medical infusion protection of claim 1 alarm device; it is characterized in that: the structure of described governor circuit is: with central processing unit (U5A) is the control core; its input pin (P3.2, P3.3) links to each other with the signal output part of checkout gear respectively; the output pin (P3.7) of central processing unit (U5A) is connected to the control line of the executive component in the tube for transfusion shutoff device by transistor amplifier, and the alarm signal output ends mouth (P3.5) of central processing unit (U5A) links to each other with host computer or master control set.

8. by the described medical infusion protection of claim 7 alarm device, it is characterized in that: also be provided with the audible alarm circuit in the described governor circuit, promptly the outfan (P3.4) of central processing unit (U5A) links to each other with the control line of an audible alarm unit.

9. by claim 1 or 7 described medical infusion protection alarm devices; it is characterized in that: be provided with the liquid droping speed display device in the described governor circuit; be the output interface (P1.0～P1.7) link to each other of central processing unit (U5A) with the segment encode control end of charactron display; the position control end of charactron display links to each other with power end by triode amplifier; the base stage of audion links to each other with the position output control terminal (P3.0) of central processing unit U5A or (P3.1), and the reseting pin (RST) of central processing unit (U5A) is connected to the power end of checkout gear by SR (S1A).

10. by the described medical infusion of claim 7 protection alarm device, it is characterized in that: between the signal output part of the power end of checkout gear and checkout gear, be provided with display lamp.