CN2548217Y - Artificial arm fluid and blood transfusion training apparatus - Google Patents

Abstract

The utility model relates to an artificial arm infusion and transfusion trainer composed of two main parts of an artificial arm and an electronic decoder. Two detecting electrodes which are not connected are buried and arranged in the artificial arm, and the electrodes are respectively connected to the decoder. A detection loop of the two electrodes consists of a group of conductors connected with the decoder and a pinhead, and the pinhead is connected to another group of conductors to form an electric conduction circuit. Various puncture states of the pinhead puncturing into a blood vessel, the pinhead puncturing through a blood vessel and the pinhead failing to puncture into a blood vessel can be displayed based on various conduction states.

Description

Simulation arm infusion, blood transfusion trainer

technical field

The utility model relates to a simulated arm transfusion and blood transfusion training device used for medical technical training.

Background technique

Infusion and blood transfusion are basic operational skills that must be mastered in medical care. Due to differences in age, gender, and body shape, the thickness and thickness of blood vessels in the human body vary greatly. It is not easy to achieve "sharpness". Students must practice a lot and practice repeatedly to achieve proficiency. In addition to the costly and necessarily painful physical exercises on animals and humans, prosthetic arm models are also commonly used for training. However, most of the models used for this kind of training are made of plastic, with simple structures, rough materials, and poor simulation, which are far from the actual situation.

Contents of the invention

In view of the above situation, the utility model hereby provides a simulated arm infusion and blood transfusion training device, which not only has the material that can truly imitate human skin and muscle texture, but also has an indicating signal circuit for automatically displaying the piercing state of the needle. The utility model is realized in the following manner.

The simulated arm transfusion and blood transfusion trainer of the utility model is composed of two main parts: a simulated arm and an electronic decoder. Two groups of detection electrodes that are not connected to each other are embedded in the simulation arm, and the electrodes are respectively connected to the decoder, and a group of wires connected to the decoder and the needle constitutes a detection circuit of the two groups of electrodes. Among them, the artificial arm includes an arm-shaped base made of elastic plastic, and silicon rubber artificial blood vessels are arranged around the length of the arm according to the solid shape. The blood vessels are equipped with flexible bare wires along the extension direction of the blood vessels, and the blood vessels are placed in the concave holes on the base. In the groove, the groove is covered by conductive rubber, and the outermost layer is wrapped by a layer of elastic translucent simulated skin, and the covered blood vessels and texture can be vaguely seen. Through the above structure, it is obvious that two conductive loops that are not connected to each other have been formed, that is, the flexible bare wire in the blood vessel and the conductive groove formed by the conductive rubber. They respectively form two sets of detection electrodes of the decoder. In acupuncture training, the needle is connected to another strand of wire as the conductive circuit of the aforementioned two strands of wire. According to different conduction states, it is obvious that the above structure must be identified by an appropriate electronic decoding device to obtain the necessary functions. That is to say, various puncture states such as the needle piercing the blood vessel, the needle piercing the blood vessel, and the needle not piercing the blood vessel are displayed. The utility model specially designs a dedicated decoding circuit for this purpose, which can accurately and timely display the acupuncture state in various preset ways. The circuit is composed of a single-chip voice prompt system and a pulse shaping circuit of the trigger signal detection part, and the single-chip voice prompt system includes a single-chip microcomputer, an address latch, a read-only memory, a D/A converter, and a power amplifier; the trigger signal The detection part consists of a high-impedance operational amplifier, a secondary amplifier, and a Schmitt pulse-shaping trigger. This circuit is the simplest structure for realizing the indicating function of the simulation arm to the greatest extent and perfectly, and the designer of the utility model has not yet found a better indicating circuit structure. Therefore, only by combining with this circuit can the purpose of the present utility model be uniquely achieved. Certainly, through the above-mentioned basic structure and decoding circuit, the inductive triggering of the needle can be easily realized without connecting the wire on the needle, making it closer to the actual situation. But because its circuit structure is bound to be complicated, than does not meet the spirit of the most simplified basic structure that the utility model needs to protect, so do not describe in detail here.

A preferred embodiment is described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the use state schematic diagram of artificial arm transfusion described in the utility model, blood transfusion trainer;

Fig. 2 is the cross-sectional structure schematic diagram of described simulation arm;

Fig. 3 is a schematic diagram of the basic structure of a dedicated electronic decoding device.

Detailed ways

According to FIG. 1 , the simulated arm infusion and blood transfusion trainer includes a simulated arm 1 , an electronic decoding device 2 and a needle 3 . They are connected to each other by wire 4 to form a loop. According to different connection states between the wires, the electronic decoding device 2 can send out different indication signals.

According to Figure 2, the artificial arm is made of elastic plastic matrix 5, and silicon rubber artificial blood vessels 6 are arranged around the length of the arm according to the solid shape. The blood vessels are equipped with flexible bare wires 7 along the extension direction of the blood vessels, and the blood vessels 6 are placed on the matrix 5. In the groove, the groove is covered by conductive rubber 8, and the outermost layer is wrapped by a layer of elastic translucent artificial skin 9. The bare wire 7 and the conductive rubber 8 are led out through the wire 4 and connected with the electronic decoding device 2 .

According to Fig. 3, the electronic decoder circuit is composed of the single-chip voice prompt system I and the trigger signal detection part II. Wherein, single-chip voice prompt system 1 is made up of single-chip microcomputer, address latch, read-only memory, D/A converter, I/V converter, power amplifier and sound output part, is used for the trigger signal that is collected is outputted by voice prompt ; The detection part II includes a pulse shaper, electrodes A and B respectively correspond to the conductive rubber 8 in the simulation arm and the flexible bare wire 7 in the blood vessel. The collected trigger signal is input into the pulse shaping circuit respectively through the two-stage high-impedance operational amplifier and amplified, and then input into the voice prompt system I of the single-chip microcomputer after pulse shaping. The working state of the above circuit is: when the needle touches the electrode A or the electrode B, an induction signal will be generated instantaneously. The signal is amplified by a two-stage high input impedance power amplifier, and a positive-phase pulse signal is generated at the output terminal. After being shaped and inverted by the pulse shaper, a regular negative pulse is generated and sent to the single-chip microcomputer for identification to determine whether it is electrode A or electrode B. And call the corresponding voice prompt in the data area of the read-only memory. For example, if electrode A corresponds to the bare wire 7 in the blood vessel, the signal from electrode A indicates that the needle has pierced into the blood vessel 6; if electrode B corresponds to the conductive rubber 8 around the blood vessel, it means that the needle has not pierced the blood vessel 6; A signal to both sets of electrodes that the blood vessel has been pierced and so on. The relevant voice data that is called out is sent to the D/A converter through the data bus to generate a voice analog signal, which is amplified by the power amplifier after low-pass filtering and sent to the speaker for output.

This embodiment is given only in the most basic schematic manner. Through the above prompts, it is obvious to those skilled in the art to select relevant electrical components or components to obtain the above functions, and it does not go beyond the essential scope of protection of the present invention.

Claims (3)

1, a kind of emulation arm transfusion, blood transfusion training aids, it is characterized in that, described training aids is made of emulation arm and two parts of electronics demoder, bury two groups of not connected exploring electrodes in the emulation arm underground, described electrode is connected with the electronics demoder respectively, and one group of lead that demoder is connected with syringe needle constitutes the detection circuit of described two arrays of electrodes.

2, according to the described emulation arm transfusion of claim 1, blood transfusion training aids, it is characterized in that, described emulation arm comprises the matrix with arm shape that Elastic plastic-rubber is made, along the brachium direction according to entity morphology around arranging silicon rubber emulation blood vessel, bearing of trend along blood vessel in the blood vessel is equipped with flexible bare conductor, blood vessel then is placed in the groove on the matrix, and this groove is covered by conductive rubber, and described flexible bare conductor and conductive rubber form two groups of exploring electrodes of demoder respectively; Described emulation arm outermost is then by the translucent simulation skin parcel of one deck elasticity.

3, according to the described emulation arm transfusion of claim 1, blood transfusion training aids, it is characterized in that, described demoder is made of the pulse shaping circuit of single-chip microcomputer speech prompting system and trigger pip test section, and wherein the single-chip microcomputer speech prompting system comprises single-chip microcomputer, address latch, ROM (read-only memory), D/A converter, power amplifier; Described trigger pip test section comprises that high input impedance operational amplifier, secondary amplify and the shaping pulse trigger is formed.

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