CN106859657A - A kind of vitro muscle stretches electro photoluminescence Muscle tensility test experimental bed - Google Patents

Abstract

A kind of external stretching electro photoluminescence Muscle tensility test experimental bed, including frame, mobile station, linear motion unit, electrode and programmed electrical stimulation instrument, linear motion unit, displacement transducer and electrode are provided with frame, displacement transducer is arranged at linear motion unit side, linear motion unit is connected with servomotor, servomotor is connected with motion controller, mobile station is installed on linear motion unit, the mobile station muscle clamp relative with being provided with frame, force sensor is set on one of muscle clamp, and electrode is connected with programmed electrical stimulation instrument.The experimental bench can realize the motion of specific rule by Experiment of Computer Control Technology muscle package, also the position of mobile station can be manually adjusted, the parameter versus time curves such as power, tensile elongation that muscle is subject to Muscle tensility during electro photoluminescence to change under different stretch state can be realized, for neuromuscular research provides laboratory facilities.

Description

An in vitro muscle stretching electrical stimulation test bench for muscle tension

technical field

The invention relates to an experimental equipment for testing the electric stimulation muscle tension of a muscle in a stretched state outside the body, and belongs to the field of medical science experimental equipment.

Background technique

Through electrical stimulation of muscles under specific stretching methods, exercise intensity, and duration, and testing the changes in muscle tension, such experimental studies can analyze the relationship between exercise and some muscle diseases, and analyze the effects of different muscle contraction methods on muscle fibers. degree of damage. However, current medical electrical stimulators, muscle tension testing equipment, etc. do not have the function of electrically stimulating muscle tension testing of muscles under specific stretching conditions.

Contents of the invention

The present invention aims at the deficiencies in existing analysis techniques for the relationship between exercise and muscle disease, and provides an in vitro muscle stretching electrical stimulation that can apply external stretching to muscles in a specific way, and at the same time perform electrical stimulation on muscles with specific rules Muscle tension test bench.

In vitro stretching electrical stimulation muscle tension test bench of the present invention adopts the following technical solutions:

The test bench includes a frame, a mobile platform, a linear motion unit, electrodes and a program-controlled electric stimulator. The frame is provided with a linear motion unit, a displacement sensor and electrodes. The servo motor is connected, the servo motor is connected with the motion controller, the linear motion unit is equipped with a mobile platform, and the mobile platform and the rack are provided with opposite muscle clips, one of which is equipped with a force sensor, and the electrodes are connected with the program-controlled electric stimulator ;

Both the force sensor and the displacement sensor are connected with a data acquisition card, and the data acquisition card is connected with a computer.

Both the motion controller and the program-controlled electric stimulator are connected with a computer.

The muscle clamp on the frame is arranged on the frame through the fixing seat.

The frame is also provided with a liquid supply head and a water receiving tray. The liquid supply head provides liquid for maintaining the activity of the experimental muscle bundles, and the liquid flows through the muscle bundles and falls into the water receiving tray.

Clamp the two ends of the muscle bundle used for the experiment on two muscle clips, and manually adjust the mobile platform to tension the muscle bundle. The movement law of the servo motor, the relevant parameters of data acquisition and recording, the law of the electrical stimulation signal and the stimulation time are set by the computer. Through the liquid supply head, the nutrient solution can fully flow through the muscle bundles, so that the electrodes can be in reliable contact with the muscle bundles, and electrical stimulation can be applied to the muscle bundles. The mobile platform and the program-controlled electric stimulator operate according to the set rules, the force sensor and the displacement sensor collect the tensile force and the tensile displacement values synchronously, record the corresponding experimental data in the computer file, and record the tensile force curve of the muscle bundle , workbench motion curve, electrical stimulation trigger pulse timing and other curve display.

The invention can control the experimental muscle bundles to realize specific and regular movements through the computer, and can also manually adjust the position of the mobile platform. It can realize the time-varying curves of parameters such as force and stretch length of muscle tension changes when the muscles are electrically stimulated under different stretching states, and provide experimental means for neuromuscular research.

Description of drawings

Fig. 1 is a schematic diagram of the structure and principle of the test bench for muscle tension in vitro muscle stretching electric stimulation of the present invention.

Fig. 2 is a schematic diagram of the relationship curve between time and tensile force shown by the experimental results of the present invention.

Fig. 3 is a schematic diagram of the relationship curve between the time and the trigger pulse displayed by the experimental results of the present invention.

Fig. 4 is a schematic diagram of the relationship curve between time and tensile displacement shown by the experimental results of the present invention.

In the figure: 1. Servo motor, 2. Linear motion unit, 3. Displacement sensor, 4. Mobile platform, 5. Muscle clip, 6. Muscle, 7. Water tray, 8. Force sensor, 9. Electrode, 10. Liquid supply head, 11, frame, 12, motion controller, 13, data acquisition card, 14, program-controlled electric stimulator, 15, computer, 16, monitor, 17, fixing seat.

detailed description

As shown in Figure 1, in vitro muscle stretching electric stimulation muscle tension test bench of the present invention comprises frame 11, mobile platform 4, fixed seat 17, linear motion unit 2, muscle clip 5, electrode 9 and program-controlled electric stimulator 14.

The frame 11 is provided with a linear motion unit 2 and a fixed seat 17 (the fixed seat 17 can also be integrated with the frame 11), the linear motion unit 2 is equipped with a mobile platform 4, and the mobile platform 4 is opposite to the fixed seat 17. A force sensor 8 is arranged on the fixing seat 17, and the force sensor 8 is connected with the data acquisition card 13. A muscle clip 5 is respectively arranged on the mobile platform 4 and the fixed seat 17 , and the muscle clip 5 on the fixed seat 17 is connected with the force sensor 8 .

Electrodes 11 are arranged on the frame 11 , and the electrodes 11 are connected with a program-controlled electric stimulator 14 . The program-controlled electric stimulator 14 is a supporting product in the market, and electric stimulation-related parameters can be set through the computer 15, and electric stimulation can be triggered by an external signal.

The linear motion unit 2 is connected with the servo motor 1, the servo motor 1 is connected with the motion controller 12, the motion controller 12 is connected with the computer 15, and the rotation of the servo motor 1 is controlled by the computer 15 and the motion controller 12. The servo motor 1 drives the mobile platform 4 to perform linear motion through a linear motion unit 2 (industrial ball screw type, an existing industrial product). The computer 15 can be used to control the mobile station 4 to achieve the required specific regular movement, or manually adjust the position of the mobile station 4 .

A displacement sensor 3 is arranged on the frame 11 , the displacement sensor 3 is connected with a data acquisition card 13 , and the data acquisition card 13 is connected with a computer 15 . The position of the mobile station 4 is measured by the displacement sensor 3 and the data acquisition card 13, and is displayed and recorded by the computer 15 and the display 16.

The frame 11 is also provided with a liquid supply head 10 and a water receiving tray 7 , and the water receiving tray 7 is at the bottom of the frame 11 . The liquid delivered by the liquid liquid supply system (in addition, not shown in the figure) drops on the muscle bundle 6 through the liquid supply head 10 to provide the muscle bundle 6 with liquid for maintaining activity. After the liquid flows through the muscle bundle 6, it falls into the water receiving tray 7.

The specific process of performing muscle stretching electric stimulation muscle tension test in vitro by the above-mentioned laboratory platform is as follows.

1. Manually operate the servo motor 1, adjust the position of the mobile platform 4 according to the length of the muscle bundle 6, so that the distance between the two muscle clamps 5 is suitable for the clamping of the muscle bundle 6.

2. Clamp the two ends of the muscle bundle 6 used for the test on the two muscle clamps 5 on the mobile platform 4 and the force sensor 5 respectively, and keep the muscle bundle 6 in a relaxed state, and use the experimental system software to place the force sensor 8 The display value is cleared.

According to specific requirements, combined with the magnitude of the tension force displayed on the software interface of the experimental system, the mobile platform 4 is manually adjusted to tension the muscle bundle 6 . The tension of the muscle bundle 6 is detected by the force sensor 5, and the data signal is measured and displayed and recorded by the data acquisition card 13 and the computer 15.

3. Turn on the power supply of the equipment, the computer and its experimental system software, and set the operating law of the workbench, the law of the electrical stimulation signal and the sending time in the experimental system software.

The computer 15 runs the experimental system software, through which the displacement sensor 3 and the force sensor 8 are cleared and the sampling parameters are set; the motion law of the servo motor 1, the relevant parameters of data acquisition and recording, the law of the electrical stimulation signal and the timing of stimulation are set.

4. Adjust the position of the liquid supply head 10 so that the nutrient solution can fully flow through the muscle bundle 6, adjust the position of the electrode 9 to make reliable contact with the muscle bundle 6, and apply electrical stimulation to the muscle bundle 6.

After the experiment started, equipment such as servo motor 1, data acquisition card 13, and program-controlled electric stimulator 14 worked according to the settings, and the corresponding experimental data was recorded in the file of computer 15, and the tensile force curve and workbench movement of muscle bundle 6 were recorded. Curves, electrical stimulation trigger pulse timing and other curves are displayed on the display 16 .

5. Run the experimental system, the mobile station 4 and the program-controlled electrical stimulator 14 operate according to the set rule. The force sensor 8 and the displacement sensor 3 collect the tensile force and the tensile displacement values synchronously, and the software simultaneously processes the signals and displays and records them.

The experimental results are displayed in the form of curves, as shown in Figure 2, Figure 3 and Figure 4.

The invention can realize the time-varying curves of parameters such as force and stretching length of muscle tension changes when the muscles are electrically stimulated in different stretching states, and provides a new experimental means for neuromuscular research.

Claims (5)

1. An in vitro stretching electric stimulation muscle tension test bench, comprising a frame, a mobile platform, a linear motion unit, electrodes and a program-controlled electric stimulator, is characterized in that: the frame is provided with a linear motion unit, a displacement sensor and an electrode , the displacement sensor is arranged on one side of the linear motion unit, the linear motion unit is connected to the servo motor, the servo motor is connected to the motion controller, a mobile platform is installed on the linear motion unit, and a relative muscle clamp is arranged on the mobile platform and the frame, wherein A muscle clip is provided with a force sensor, and the electrodes are connected with a program-controlled electric stimulator. 2. The in vitro stretching electric stimulation muscle tension test bench according to claim 1 is characterized in that: the force sensor and the displacement sensor are all connected to a data acquisition card, and the data acquisition card is connected to a computer. 3. The in vitro stretching electric stimulation test bench for muscle tension according to claim 1, characterized in that: the motion controller and the program-controlled electric stimulator are both connected to a computer. 4. The in vitro stretching electric stimulation muscle tension test bench according to claim 1 is characterized in that: the muscle clip on the frame is arranged on the frame through a fixing seat. 5 . The in vitro stretching electric stimulation test bench for muscle tension according to claim 1 is characterized in that: the frame is also provided with a liquid supply head and a water receiving tray. 6 .