A new multifunctional treatment vehicle

Abstract

The present application belongs to the technical field of pressure infusion, and particularly relates to a novel multifunctional treatment vehicle. The novel multifunctional treatment vehicle comprises a vehicle body, an infusion assembly, a data processing unit and a collection box. The infusion assembly comprises an infusion pump and an infusion tube. The infusion pump is arranged on the vehicle body in a shock-absorbing manner. One end of the infusion tube is arranged on the infusion pump, and the other end of the infusion tube is connected with a vein by puncturing the skin. A vibration sensor is attached to the outer wall of the infusion tube and electrically connected with the data processing module. In this way, vibration information of the infusion tube is collected and fed back to the data processing unit. The data processing unit controls the operating parameters of the infusion pump based on the vibration information. By changing the infusion pressure of the infusion pump in real time based on the vibration data collected from the infusion tube and the static pressure difference data, the vibration and static pressure difference factors in the transfer process are solved, and the high-density transmission efficiency and stability of infusion for emergency massive hemorrhage or shock patients are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pressure infusion, and particularly relates to a novel multifunctional treatment vehicle. BACKGROUND

[0002] In an ambulance, a multifunctional treatment bed (also referred to as a treatment vehicle) is usually provided, the table top of which is integrated with an infusion pump fixing frame and a patient body position adjusting device, for simultaneously carrying out infusion, drug administration and other first-aid operations during the transfer process. When the ambulance is driving on a bumpy road or a gravel road in the countryside, even if the double buffering of the vehicle and the built-in damping system of the treatment vehicle is formed, moderate vibration can still penetrate the damping layer and be transmitted to the infusion pump and the patient receiving infusion. Especially for patients with severe bleeding or shock, the infusion accuracy and infusion flow rate need to be kept at high precision to maintain treatment, and during the transfer to the hospital, the interference caused by the combination of uphill and downhill and vibration needs to be overcome. In the prior art, although a spring shock absorber and a silica gel buffer pad are installed at the bottom of the infusion pump, and the static pressure difference is identified by an inclined angle sensor to adjust the infusion pressure of the infusion pump and change the venous static pressure difference when the vehicle is uphill or downhill, the vibration amplitude of the pump body is effectively reduced, and high-precision infusion is maintained to maintain treatment, but such measures are only for single scenarios of pump body vibration and uphill and downhill static pressure difference. In fact, there are also bumpy roads or gravel roads in the countryside during uphill and downhill, so there are more interference factors to be overcome, and the position of data collection is also important. The vibration not only acts on the infusion pump, but also directly impacts the infusion pipeline exposed on the table top of the treatment bed, especially the free section of the pipeline between the pump body and the patient puncture point, which is still in a vibrating environment for a long time due to the lack of targeted protection. Therefore, the intermittent vibration of the infusion pipeline will inevitably affect the infusion process: the physical deformation and the change of the flow state of the liquid in the pipeline are completely independent of the sensing ability of the infusion pump, which will directly interfere with the transmission efficiency and stability of the liquid from the pump to the human body.

[0003] For example, the pump does not sense the vibration, and the output pressure / flow rate remains constant, which cannot compensate for the sudden change in resistance: when the resistance suddenly increases, the output force of the pump is not enough to overcome the resistance, and the actual flow rate into the human body will temporarily decrease; when the resistance suddenly decreases, the liquid may flow into the human body at an "excessive speed" due to inertia,

[0004] To solve the above problems in the prior art, the present application provides a novel multifunctional treatment vehicle. SUMMARY

[0005] To solve the above problems in the prior art, the present application provides a novel multifunctional treatment vehicle.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A novel multifunctional treatment vehicle includes a vehicle body, an infusion assembly, a data processing unit, and a data acquisition box. The infusion assembly includes an infusion pump and an infusion tube. The infusion pump is shock-absorbingly mounted on the vehicle body. One end of the infusion tube is attached to the infusion pump, and the other end is pierced through the skin and connected to a vein. The data acquisition box includes a vibration sensor attached to the outer wall of the infusion tube and electrically connected to the data processing module to collect vibration information of the infusion tube and feed it back to the data processing unit. The data processing unit controls the operating parameters of the infusion pump based on the vibration information.

[0008] Preferably, the data processing unit consists of a local module and a drive module. The local module contains a vibration-flow velocity mapping model, which forms a two-dimensional mapping data table using "frequency-amplitude-flow velocity" triples and sets expected values, intermediate critical values, and over-limit values. The drive module is used to adjust the motor speed of the infusion pump according to the control commands output by the local module.

[0009] Preferably, the vibration sensor collects the vibration frequency and amplitude of the infusion tube in real time and periodically uploads the vibration information to the data processing unit.

[0010] Preferably, the local module also includes a vibration-static pressure difference-flow velocity mapping model. An angle sensor is installed at the bottom of the infusion pump to collect tilt angle data to generate static pressure difference data. The data processing unit combines the static pressure difference data and vibration information to form a slope vibration adjustment table, thereby controlling the operating parameters of the infusion pump.

[0011] Preferably, the local module converts real-time vibration information into flow velocity percentage through table lookup and linear interpolation, and encapsulates it into control commands for motor speed increment.

[0012] Preferably, the acquisition box further includes a spectral bubble detector and a pressure sensor. The spectral bubble detector, composed of an infrared sensor and a visible light dual-spectrum sensor, is located in the middle section of the infusion tube and is used to identify bubbles with a diameter ≥20μm in the infusion tube. The pressure sensor is located at the bottom of the infusion pump.

[0013] Preferably, the infusion tube needle tip is equipped with an electrically controlled vent valve, which is electrically connected to the drive module; when the spectral bubble detector detects a bubble, the drive module activates the electrically controlled vent valve within 1 second to vent the air and prevent the bubble from entering the vein.

[0014] Preferably, the two-dimensional mapping data table sets an intermediate threshold value, with expected value and over-limit value at both ends. When the vibration sensor detects a value exceeding the expected value and the pressure sensor detects a pressure change, the local module switches to the over-limit mapping strategy to adjust the infusion pressure of the infusion pump.

[0015] Preferably, the infusion pump is fixed to the vehicle body by a shock absorber located at its bottom or in a shock-absorbing manner to filter low- and medium-frequency vibrations.

[0016] Preferably, the vibration sensor is a piezoelectric sensor, and its detection end is fixed to the outer wall of the infusion tube with medical-grade adhesive and connected to the data processing unit through a shielded wire.

[0017] The infusion tubing is a disposable medical device, with one end connected to the infusion pump via a plug-in connection, and the other end equipped with a needle for piercing the skin.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. Through a closed-loop mechanism of "dual vibration reduction - pipe wall sensing - real-time speed regulation," pump body vibration reduction and pipeline vibration compensation are combined into one: the pump bottom spring / silicone pad first filters low- and medium-frequency vibrations, and the piezoelectric sensor attached to the middle section of the infusion tube instantly captures the remaining frequency-amplitude information. The local module uses this information to look up a table, interpolate, and output a PWM speed regulation command, enabling the drive motor to correct its speed within milliseconds. This significantly reduces instantaneous overshoot or underflow caused by pipeline deformation, providing a stable and safe fluid pathway for patients requiring high-precision infusion, such as those experiencing severe bleeding or shock.

[0020] 2. The system simultaneously activates triple protection: "pressure monitoring + bubble recognition + rapid venting". The pressure sensor captures residual high pressure fluctuations after the shock-absorbing pad, and combined with the infrared-visible dual-spectrum recognition of bubbles ≥20μm by the spectral bubble detector, once the risk of bubbles is determined, the drive module opens the electrically controlled venting valve at the needle end within 1 second to automatically vent the gas in the lumen. This not only prevents bubble embolism, but also avoids instantaneous abnormal flow rate caused by violent stretching and squeezing, thereby minimizing the infusion safety risk in severely bumpy scenarios. Attached Figure Description

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0022] Fig. 1 This is a two-dimensional side view of the present invention;

[0023] Fig. 2 This is the control flowchart of the present invention;

[0024] Legend: 1. Vehicle body; 2. Shock absorber; 3. Infusion pump; 31. Pressure sensor; 4. Infusion tube; 5. Data acquisition box; 51. Vibration sensor; 52. Spectroscopic bubble detector; 6. Shielded wire; 7. Electronically controlled exhaust valve; 8. Data processing unit; 81. Local module; 82. Drive module; Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0026] Example 1:

[0027] Ambulances are typically equipped with multi-functional treatment beds (also known as treatment carts), whose platforms integrate infusion pump mounts and patient positioning devices for simultaneous intravenous infusions, medication administration, and other emergency procedures during transport. When ambulances travel on bumpy or gravelly rural roads, even with the vehicle and treatment cart's built-in shock absorption systems providing double cushioning, moderate vibrations can still penetrate the damping layer and be transmitted to the infusion pump and the patient receiving the infusion. This is especially critical for emergency patients with severe bleeding or shock, where high precision infusion accuracy and flow rate are essential for maintaining treatment. Furthermore, the transport to the hospital must overcome interference from inclines, declines, and combined vibrations from inclines and declines. While existing technologies effectively reduce pump vibration and maintain high-precision infusion therapy by adding spring shock absorbers and silicone buffer pads to the bottom of the infusion pump and using angle sensors to identify static pressure differences to adjust the infusion pump's infusion pressure and change the venous static pressure difference when the vehicle is going uphill or downhill, these measures only address the pump's own vibration and the static pressure difference when going uphill or downhill in a single scenario. In fact, there are also potholes or gravel roads in rural areas, so there are more interference factors to overcome, and the location of data collection is also important. Vibration not only affects the infusion pump but also directly impacts the infusion tubing exposed on the treatment table surface—especially the free section of tubing between the pump and the patient's puncture point. These tubing sections are still in a vibration environment for a long time due to the lack of targeted protection.

[0028] refer to Figs. 1-2As shown, this embodiment provides a novel multifunctional treatment cart that adjusts the infusion pressure in real time by collecting vibration information from the infusion tube 4 to eliminate vibration interference factors. Specifically, it includes a cart body 1, an infusion assembly, a data processing unit 8, and a collection box 5. The infusion assembly includes an infusion pump 3 and an infusion tube 4. The infusion pump 3 is shock-absorbingly mounted on the cart body 1 and can provide stable infusion power. Compared with gravity infusion, it is more suitable for patients who need high-precision infusion. One end of the infusion tube 4 is located on the infusion pump 3, and the other end is pierced through the skin and connected to a vein. The collection box 5 includes a vibration sensor 51, which is attached to the outer wall of the infusion tube 4 and electrically connected to the data processing module to collect vibration information from the infusion tube 4 and feed it back to the data processing unit 8. The data processing unit 8 controls the operating parameters of the infusion pump 3 based on the vibration information.

[0029] Specifically, a shock absorber 2 is installed at the bottom of the infusion pump 3. This shock absorber can be either a spring shock absorber or a silicone buffer pad. The purpose of this design is to filter out low- to medium-frequency vibrations during transport. Therefore, adding shock absorbers at the bottom of the pump stabilizes the source with minimal engineering cost. Secondly, the infusion tube 4 is a disposable medical item. One end is connected to the infusion pump 3 via a plug-in connection, and the other end is equipped with a needle that pierces the skin and connects to a vein.

[0030] Specifically, the acquisition box 5 includes a vibration sensor 51, which is a piezoelectric sensor. Its detection end is fixed to the outer wall of the middle part of the infusion tube 4 with medical-grade adhesive to improve the accuracy of acquiring vibration information of the infusion tube 4. It is connected to the data processing unit 8 through a shielded wire 6. Since pressure infusion is used, the infusion tube 4 is not placed vertically like gravity infusion. The middle section of the infusion tube 4 is usually located on the platform of the vehicle body 1. The vibration is transmitted to the infusion tube 4 through the vehicle body 1. The vibration sensor 51 collects the vibration information of the infusion tube 4, including the vibration frequency and vibration amplitude, and feeds it back to the data processing unit 8 through the shielded wire 6.

[0031] Specifically, the data processing unit 8 consists of two levels: a local module 81 and a drive module 82. The local module 81 contains a vibration-flow velocity mapping model. This model is stored as a two-dimensional mapping data table in the form of "frequency-amplitude-flow velocity" triples, with intermediate and critical values ​​set, and expected and over-limit values ​​at the two ends, respectively. The feedback data from the vibration sensor 51 are all expected values, and the flow velocity percentage is uniquely determined by row and column indexing. During operation, the vibration sensor 51 periodically uploads real-time frequency and amplitude. The local module 81 looks up the table and interpolates to obtain the target flow velocity percentage, then converts it into motor speed increments and encapsulates it into control commands. The drive module 82 receives the command, immediately parses it, and outputs a PWM signal to drive the motor of the infusion pump 3, realizing real-time speed regulation.

[0032] Specifically, the local module also includes a vibration-static pressure difference-flow velocity mapping model. An angle sensor is installed at the bottom of the infusion pump to collect static pressure difference data generated by the tilt angle. The data processing unit combines the static pressure difference data and vibration information to form a slope vibration adjustment table, which drives the infusion pump through the drive module.

[0033] Example 2:

[0034] During treatment and transport, when the infusion tubing 4 senses occasional severe jolts and vibrations, such as during sudden braking or crossing deep potholes, these jolts and vibrations can cause the tubing 4 to stretch or compress, resulting in the periodic shrinking and expanding of the tubing volume. During compression, the fluid inside the tubing is "extra pushed," with the instantaneous flow rate exceeding the pump's set value. During rebound (stretching), a brief negative pressure forms in the tubing, hindering fluid flow and causing the instantaneous flow rate to fall below the set value. Simultaneously, there is a risk of air bubbles entering the tubing: severe shaking causes dissolved gases in the fluid to precipitate, forming bubbles with a diameter >50μm, which, if they enter blood vessels, may cause embolism.

[0035] To address this, based on the above embodiments, the acquisition box 5 also includes a pressure sensor 31, a spectral bubble detector 52, and an electrically controlled exhaust valve 7. The spectral bubble detector 52 consists of an infrared sensor and a visible light dual-spectrum sensor, capable of identifying bubbles with a diameter >20μm. The electrically controlled exhaust valve 7 is located at the needle end of the infusion tube 4 and connected to the shielded wire 6, controlled by the drive module 82, and communicates with the cavity of the infusion tube 4. The pressure sensor 31 is located at the bottom of the infusion pump 3. Since the bottom of the infusion pump 3 is equipped with a spring shock absorber 2 or a silicone buffer pad to filter low-to-medium level vibrations, it still has an impact on vibrations caused by severe bumps. Therefore, the pressure sensor 31 is located here, only affecting high-level vibrations. Thus, the pressure sensor 31 is located here to detect the residual vibration value after filtering high-level vibrations, and can also be used to detect vibrations through pressure sensing. The pressure fluctuation of device 31 is used to determine whether it is a severe shock. Combined with the value detected by vibration sensor 51 exceeding the expected value and the pressure fluctuation detected by pressure sensor 31, the local module 81 switches to the over-limit mapping strategy to adjust the infusion pressure of infusion pump 3. Based on the bubble data (i.e., whether there are bubbles, bubble size, and number of bubbles) collected by the spectral bubble detector 52 through the local module 81, if there are no bubbles, the drive module 82 will not start. If bubbles are present, the data processing module feeds back to the drive module 82, and the drive module 82 activates the electric exhaust valve through the shielded wire 6 to vent air at the needle end of infusion tube 4 to prevent bubbles from entering the vein. It should be noted that the process of the spectral bubble detector 52 collecting data and feeding back to the local module 81, then to the drive module 82 and the electric exhaust valve 7 is completed within 1 second.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A novel multifunctional treatment vehicle, characterized in that: The device includes a vehicle body, an infusion assembly, a data processing unit, and a data acquisition box. The infusion assembly includes an infusion pump and an infusion tubing. The infusion pump is shock-absorbingly mounted on the vehicle body. One end of the infusion tubing is attached to the infusion pump, and the other end is pierced through the skin and connected to a vein. The data acquisition box includes a vibration sensor attached to the outer wall of the infusion tubing and electrically connected to the data processing unit to collect vibration information from the infusion tubing and feed it back to the data processing unit. An angle sensor is located at the bottom of the infusion pump to collect static pressure difference data generated by the tilt angle. The data processing unit controls the operating parameters of the infusion pump based on the vibration information and the static pressure difference data collected by the angle sensor.

2. The novel multifunctional treatment vehicle according to claim 1, characterized in that: The data processing unit consists of two levels: a local module and a drive module. The local module contains a vibration-flow velocity mapping model, which forms a two-dimensional mapping data table using "frequency-amplitude-flow velocity" triples and sets expected values, intermediate critical values, and over-limit values. The drive module is used to adjust the motor speed of the infusion pump according to the control commands output by the local module.

3. The novel multifunctional treatment vehicle according to claim 2, characterized in that: The vibration sensor collects the vibration frequency and amplitude of the infusion tube in real time and periodically uploads the vibration information to the data processing unit.

4. The novel multifunctional treatment vehicle according to claim 3, characterized in that: The local module also includes a vibration-static pressure difference-flow velocity mapping model. The data processing unit combines static pressure difference data and vibration information to form a slope vibration adjustment table, thereby controlling the operating parameters of the infusion pump.

5. A novel multifunctional treatment vehicle according to claim 3, characterized in that: The acquisition box also includes a spectral bubble detector and a pressure sensor. The spectral bubble detector, which consists of an infrared sensor and a visible light dual-spectrum sensor, is located in the middle section of the infusion tube and is used to identify bubbles with a diameter ≥20μm in the infusion tube. The pressure sensor is located at the bottom of the infusion pump.

6. A novel multifunctional treatment vehicle according to claim 4, characterized in that: The infusion tube needle tip is equipped with an electrically controlled vent valve, which is electrically connected to the drive module. When the spectral bubble detector detects a bubble, the drive module activates the electrically controlled vent valve within 1 second to vent the air and prevent the bubble from entering the vein.

7. A novel multifunctional treatment vehicle according to claim 5, characterized in that: The two-dimensional mapping data table sets an intermediate threshold value, with expected value and over-limit value at both ends. When the vibration sensor detects a value exceeding the expected value and the pressure sensor detects a pressure change, the local module switches to the over-limit mapping strategy to adjust the infusion pump's infusion pressure.

8. A novel multifunctional treatment vehicle according to claim 1, characterized in that: The infusion pump is fixed to the vehicle body in a shock-absorbing manner by a shock absorber located at its bottom, which is used to filter low- and medium-frequency vibrations.

9. A novel multifunctional treatment vehicle according to claim 1, characterized in that: The infusion tubing is a disposable medical device, with one end connected to the infusion pump via a plug-in connection, and the other end equipped with a needle for piercing the skin.

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