A pleural cavity drainage component intelligent monitoring device

Abstract

The utility model discloses a kind of chest cavity drainage composition intelligent monitoring devices, including spectrum analyzer and drainage bin, and is equipped with on spectrum analyzer: optical detection module;Main control chip;Output unit;Power supply unit;The side of spectrum analyzer is equipped with detection area, the side of drainage bin is equipped with the detection end that can be extended into detection area, detection end is equipped with the detection cavity for drainage fluid to enter, optical detection module includes the light source module group that can emit light beam to detection cavity and the detector for receiving reflected light beam, detector is connected with main control chip, using reflective optical detection technology, simultaneously realize the monitoring of hemoglobin, chylomicron, inflammatory factor and other key components, the characteristic absorption spectrum of specific biomarker can be covered by multi-wavelength light source module group, combined with the absorbance dynamic analysis of main control chip, the concentration change trend of multiple components is synchronously obtained, break through the limitation of single parameter detection of traditional device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an intelligent monitoring device for thoracic drainage components. Background Technology

[0002] In thoracic surgery, closed thoracic drainage is a crucial method for postoperatively removing pleural effusion, hemothorax, and gas. Traditional drainage devices often rely on medical staff to visually assess the patient's condition by observing changes in the color, turbidity, and volume of the drainage fluid. This approach suffers from high subjectivity and delayed response. Especially in the early identification of complications such as postoperative bleeding, chylothorax, or infection, subtle changes in the drainage fluid composition are difficult to detect visually, often leading to delays in clinical intervention and impacting patient prognosis.

[0003] In recent years, some improved drainage devices have attempted to incorporate electronic monitoring functions, such as monitoring drainage volume using gravity sensors or detecting liquid transparency using photoelectric sensors. However, existing technologies still have significant limitations: First, most sensors can only acquire single parameters such as flow rate and transparency, and cannot perform quantitative analysis of key components such as hemoglobin, chylomicrons, and inflammatory markers; second, some detection devices using contact electrodes are susceptible to protein deposition, posing risks of measurement drift and cross-contamination; third, while laboratory biochemical analysis can provide accurate component data, it requires repeated sampling and testing, which is cumbersome and cannot achieve real-time monitoring.

[0004] Therefore, there is an urgent need to develop a thoracic drainage monitoring device that can monitor changes in drainage fluid composition in real time and non-invasively, and can dynamically assess the patient's condition through intelligent algorithms, in order to solve the problems of single detection dimensions, slow response, susceptibility to interference, and insufficient clinical guidance in existing technologies.

[0005] This utility model is based on the above-mentioned circumstances. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides an intelligent monitoring device for the components of thoracic drainage.

[0007] This utility model is achieved through the following technical solution:

[0008] A smart monitoring device for thoracic drainage components includes a spectrometer and a drainage chamber, wherein the spectrometer is equipped with:

[0009] Optical detection module for detecting drainage fluid;

[0010] The main control chip is used to calculate the absorbance change ΔA and determine the patient's status based on a preset threshold.

[0011] Output unit used for output signals;

[0012] Power supply unit;

[0013] The spectrometer has a detection area on one side, and the drainage chamber has a detection end on one side that can extend into the detection area. The detection end has a detection cavity for the drainage fluid to enter. The optical detection module includes a light source module that can emit a light beam to the detection cavity and a detector for receiving the reflected light beam. The detector is connected to the main control chip.

[0014] As described above, the intelligent monitoring device for thoracic drainage components includes an LED light module. The LED light contains a first light core, a second light core, and a third light core. The wavelength range of the first light core is 270nm-290nm, the wavelength range of the second light core is 410nm-420nm, and the wavelength range of the third light core is 340nm-355nm.

[0015] As described above, in an intelligent monitoring device for thoracic drainage components, the main control chip has a built-in time control unit that can control the first, second, and third lamps to light up sequentially at intervals.

[0016] As described above, the intelligent monitoring device for thoracic drainage components includes an output unit comprising a display screen and an indicator unit, wherein the indicator unit includes a first indicator light and a second indicator light.

[0017] As described above, the intelligent monitoring device for thoracic drainage components includes a drainage chamber with a cover that can be opened. The cover is provided with a drainage tube connector that communicates with the detection chamber. A flow rate control structure is connected to the cover at the position corresponding to the drainage tube connector, which can increase the flow rate of the drainage tube connector outlet port as the flow rate increases within a preset flow range.

[0018] As described above, the intelligent monitoring device for thoracic drainage components includes a flow rate control structure comprising a connecting ring connected to the cover, the connecting ring having a through hole communicating with the drainage tube connector, and an elastic stop extending below the through hole to slow down the fluid flow rate.

[0019] As described above, the intelligent monitoring device for thoracic drainage components uses an STM32G4 series chip with built-in operational amplifiers and a 12-bit ADC as the main control chip. When ΔA is at a first preset threshold, it is determined that the patient has active bleeding, triggering the first indicator light to illuminate and the display screen to show alarm information. When ΔA is at a second preset threshold, it is determined that the patient has chylothorax, triggering the second indicator light to illuminate and the display screen to show alarm information.

[0020] As described above, the intelligent monitoring device for thoracic drainage components includes a drainage chamber made of transparent material. The drainage chamber is divided into a first fluid storage chamber, a second fluid storage chamber, and a third fluid storage chamber. The lower part of the first fluid storage chamber is connected to the lower part of the detection chamber, the upper part of the first fluid storage chamber is connected to the upper part of the second fluid storage chamber, and the upper part of the second fluid storage chamber is connected to the upper part of the third fluid storage chamber.

[0021] As described above, the intelligent monitoring device for thoracic drainage components includes a drainage pipe at the lower part of the drainage chamber for draining the liquid from the first, second, and third fluid storage chambers. The drainage pipe is equipped with a switch valve to control its on / off state.

[0022] As described above, in a pleural drainage component intelligent monitoring device, a partition plate is provided between the first fluid storage chamber and the detection chamber, and the partition plate is provided with a flow hole that allows the liquid in the detection chamber to flow into the first fluid storage chamber.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] This invention employs reflective optical detection technology to simultaneously monitor key components such as hemoglobin, chylomicrons, and inflammatory factors. A multi-wavelength light source module can cover the characteristic absorption spectra of specific biomarkers, and combined with dynamic absorbance analysis of the main control chip, it simultaneously acquires the concentration change trends of multiple components, overcoming the limitations of traditional devices that only detect single parameters.

[0025] The main control chip constructs a dynamic analysis model based on the absorbance change ΔA, such as the rate of increase in bleeding volume, the chyle concentration threshold, and the cumulative curve of inflammatory factors. Combined with a preset clinical and pathological threshold library, such as the criteria for active bleeding and chylothorax, it realizes a closed-loop analysis from "data acquisition" to "status assessment".

[0026] The system employs a dynamic threshold adjustment algorithm to adapt to individual differences and disease progression stages, reducing false alarm rates and improving the sensitivity of early warning for complications. The detection end and drainage chamber feature a detachable design, with the detection cavity directly integrated into the drainage chamber's internal flow channel, eliminating the need for additional drainage paths, thus simplifying the structure and reducing the complexity of clinical operations.

[0027] The modular design of the independent spectrometer and drainage chamber facilitates daily maintenance and replacement. Real-time component analysis replaces manual experience-based judgment and repeated laboratory tests, reducing the risk of missed diagnoses and testing costs. At the same time, it avoids cross-infection that may be caused by contact testing, meeting the requirements for hospital infection control. Attached Figure Description

[0028] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is an exploded view of the present invention;

[0031] Figure 3 This is a schematic diagram of the drainage chamber in this utility model;

[0032] Figure 4 This is a schematic diagram showing the distribution of the various components in this utility model;

[0033] Figure 5 This is a schematic diagram of the optical path of this utility model;

[0034] Figure 6 This is an exploded view of the drainage chamber in this utility model;

[0035] Figure 7 This is a cross-sectional schematic diagram of the drainage chamber in this utility model;

[0036] Figure 8 This is a schematic diagram of the structure of the drainage chamber with graduations in this utility model;

[0037] Figure 9 This is a schematic diagram of the flow rate control structure in this utility model;

[0038] Figure 10 This is a schematic diagram illustrating the principle and flow of this utility model. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings:

[0040] like Figures 1 to 10 The illustrated intelligent monitoring device for thoracic drainage components includes a spectrometer 1 and a drainage chamber 2. The spectrometer 1 is characterized by: an optical detection module 3 for detecting drainage fluid; a main control chip 4 for calculating absorbance change ΔA and determining the patient's condition based on a preset threshold; an output unit 5 for outputting signals; and a power supply unit 6. A detection area 11 is provided on one side of the spectrometer 1, and a detection end 21 extending into the detection area 11 is provided on one side of the drainage chamber 2. The detection end 21 has a detection cavity 22 for the drainage fluid to enter. The optical detection module 3 includes a light source module 31 that emits a light beam to the detection cavity 22 and a detector 32 for receiving the reflected light beam. The detector 32 is connected to the main control chip 4. The drainage chamber 2 is made of a transparent material.

[0041] This invention employs reflective optical detection and multi-wavelength dynamic analysis technology. Through the detachable drainage chamber 2 integrated detection module, it monitors the concentration changes of multiple parameters such as hemoglobin, chylomicrons, and inflammatory factors in real time. Combined with dynamic threshold algorithms and clinical pathology databases, it achieves accurate early warning of complications and has the advantages of modular maintenance, infection control, and cost control.

[0042] The principle of the aforementioned spectrometer 1 in detecting the components of drainage fluid is the same as that of an infrared spectrometer in detecting liquid components: the interaction between the light beam and the vibrational energy levels of the molecules, and the evanescent wave detection under reflection phenomena. Molecules in the liquid, such as hemoglobin and chylomicrons, absorb infrared light energy of specific wavelengths due to chemical bond vibrations, resulting in characteristic absorption peaks in the reflection spectrum. The reflected light, carrying sample absorption information, is captured by the detector 32. By comparing the intensity difference between the incident and reflected light, the absorbance A is calculated, and a spectrum is generated. Combined with chemometric algorithms or a pre-set clinical characteristic spectral library, the concentration of each component in the liquid is quantitatively analyzed. In medical settings, by continuously monitoring the absorbance change ΔA, combined with dynamic threshold algorithms, such as individual baseline calibration and pathological model matching, the component concentration trend is fed back in real time, identifying abnormalities. The structure and principle of the detector 32 are the same as or similar to the light wave detector of an infrared spectrometer.

[0043] In one embodiment, the light source module 31 includes an LED lamp, which contains a first lamp core, a second lamp core, and a third lamp core. The wavelength range of the first lamp core is 270nm-290nm, the wavelength range of the second lamp core is 410nm-420nm, and the wavelength range of the third lamp core is 340nm-355nm. An optimal embodiment uses a first lamp core with a wavelength of 280nm, a second lamp core with a wavelength of 415nm, and a third lamp core with a wavelength of 348nm. The main control chip 4 has a built-in timing unit that controls the sequential lighting interval of the first, second, and third lamp cores. In one embodiment, each of the first, second, and third lamp cores lights up sequentially for 10ms. Triglycerides have a spectral absorption peak around 280 nm, and hemoglobin has a spectral absorption peak around 415 nm. The third wick at 348 nm, used as a reference wavelength, experiences non-specific light scattering from suspended cells, fibrin clots, or bubbles in the drainage fluid, causing deviations in absorbance measurements. Since the 348 nm wavelength is outside the characteristic absorption bands of hemoglobin and triglycerides, its absorbance changes primarily reflect environmental interference factors such as liquid turbidity, light source fluctuations, and detector drift. The main control chip 4 dynamically subtracts background interference from the absorbance changes at 280 nm and 415 nm wavelengths by calculating the absorbance changes at the reference wavelength in real time, ensuring that the absorbance data of the target component accurately reflects its concentration changes.

[0044] After long-term use, the light intensity of the light source module 31 and detector 32 may decrease due to aging, and contaminants may also adhere to the cavity wall of the detection cavity 22. A reference wavelength signal can be used to establish a light intensity attenuation benchmark model, and the detection sensitivity of 280nm and 415nm wavelengths can be automatically corrected through an algorithm to avoid measurement errors caused by hardware performance degradation.

[0045] Differential algorithms can effectively suppress cross-absorption interference from non-target components, enhance the detection specificity of hemoglobin and triglycerides, and significantly improve component resolution, especially in mixed pleural effusions.

[0046] The physicochemical properties of pleural drainage fluid, such as temperature and viscosity, may change as the disease progresses, affecting light propagation characteristics. Reference wavelength absorbance data can provide real-time feedback on changes in the fluid's physical state, allowing the main control chip to dynamically adjust detection algorithm parameters to ensure consistent detection under different bodily fluid conditions.

[0047] In one embodiment, the output unit 5 includes a display screen 51 and an indicator unit. The display screen 51 may be an e-ink display screen or other types of display screen, and the indicator unit includes a first indicator light 52 and a second indicator light 53. Further, the first indicator light 52 is a red light, and the second indicator light 53 is a yellow light.

[0048] The main control chip 4 is an STM32G4 series chip with built-in operational amplifiers and a 12-bit ADC. When ΔA is at the first preset threshold, it is determined that the patient has active bleeding, triggering the first indicator light 52 to light up and the display screen 51 to display alarm information; when ΔA is at the second preset threshold, it is determined that the patient has chylothorax, triggering the second indicator light 53 to light up and the display screen 51 to display alarm information. Simultaneously, the alarm signal can be transmitted to the computer terminal via a signal generator.

[0049] In one embodiment, the drainage chamber 2 includes a cover 20 that can be opened. The cover 20 is provided with a drainage tube connector 220 communicating with the detection chamber 22. A flow rate control structure 8 is connected to the cover 20 at a position corresponding to the drainage tube connector 220, which can increase the liquid outlet port of the drainage tube connector 220 as the flow rate increases within a preset flow range. The cover 20 can cooperate with the side wall of the detection area 11 to position the detection end 21, thereby improving the accuracy of the detection.

[0050] Furthermore, the flow rate control structure 8 includes a connecting ring 81 connected to the cover 20. The connecting ring 81 has a through hole 811 communicating with the drainage pipe connector 220. Several elastic blocks 82 are also connected to the connecting ring 81, extending below the through hole 811 to slow down the liquid flow rate. The connecting ring 81 is connected to the cover 20 by glue or threaded fasteners or other connecting structures. The elastic blocks 82 can block the drainage fluid, thereby reducing the flow rate of the drainage fluid into the detection chamber 22 and preventing excessive impact from the drainage fluid. When there is a large amount of drainage fluid, the drainage fluid will squeeze the elastic blocks 82, thereby increasing the channel through which the drainage fluid passes.

[0051] In one embodiment, the drainage chamber 2 is made of medical-grade PMMA material. The main control chip 4 includes a compensation algorithm for the impact of the material on the test values ​​of the drainage chamber 2. Further, the drainage chamber 2 is divided into a first liquid storage chamber 23, a second liquid storage chamber 24, and a third liquid storage chamber 25. The lower part of the first liquid storage chamber 23 communicates with the lower part of the detection chamber 22, the upper part of the first liquid storage chamber 23 communicates with the upper part of the second liquid storage chamber 24, and the upper part of the second liquid storage chamber 24 communicates with the upper part of the third liquid storage chamber 25. The lower part of the drainage chamber 2 is provided with a drain pipe 26 for draining the liquid from the first liquid storage chamber 23, the second liquid storage chamber 24, and the third liquid storage chamber 25. The drain pipe 26 is equipped with a switch valve 27 to control its on / off state. The bottoms of the first liquid storage chamber 23, the second liquid storage chamber 24, and the third liquid storage chamber 25 are provided with a hydrophobic coating with a contact angle greater than 120°, thereby accelerating the drainage of liquid.

[0052] During chest drainage, medical staff also judge the patient's condition based on the amount of drainage fluid. The larger the volume of the reservoir, the lower the accuracy of observation. Therefore, the accuracy of observation is increased by dividing the reservoir into multiple cavities.

[0053] In one embodiment, the detection end 21 is trapezoidal, and the cover 20 is also provided with a trapezoidal structure 200 that cooperates with the detection end 21. The detection area 11 cooperates with the trapezoidal structure 200 on the cover 20 to position the drainage chamber 2, thereby ensuring the accuracy of the detection data.

[0054] In one embodiment, the upper part of the drainage chamber 2 is also provided with an overflow pipe 28 for discharging liquid from the chamber when the third liquid storage chamber 25 is full, and the overflow pipe 28 is also provided with a switch valve 27.

[0055] In one embodiment, a partition plate 7 is provided between the first liquid storage chamber 23 and the detection chamber 22. The partition plate 7 is provided with a flow hole 71 for allowing liquid in the detection chamber 22 to flow into the first liquid storage chamber 23. After the detection is completed, the drainage fluid is discharged into the first liquid storage chamber 23 through the flow hole 71.

[0056] In one embodiment, the drainage chamber 2 is further provided with a scale 9 for measuring the liquid volume in the first liquid storage chamber 23, the second liquid storage chamber 24 and the third liquid storage chamber 25.

[0057] In one embodiment, the angle between the light beam emitted by the light source module 31 and the reflected light beam received by the detector is 45°, the distance from the light source module 31 to the liquid in the detection cavity 22 is 3mm, and the distance from the detector to the liquid in the detection cavity 22 is 3mm.

[0058] In one embodiment, the power supply unit 6 can be a CR2032 button battery to support power supply during detection. The spectrum analyzer 1 is also equipped with a debugger 10 that can be used for chip-level firmware burning, algorithm parameter debugging, and fault diagnosis. The debugger 10 is a commercially available debugger.

[0059] In one embodiment, a removable filter membrane can be covered on the inner wall of the detection chamber 22 to prevent protein precipitation, wherein the filter membrane has a pore size of 1 μm.

[0060] The principle behind this case:

[0061] S1. Connect the drainage tube to the drainage tube connector 220, and the drainage fluid flows into the detection chamber 22;

[0062] S2. The timing unit controls the first lamp core, the second lamp core, and the third lamp core to emit light beams into the detection cavity at preset intervals.

[0063] S3, Detector 32 receives the reflected light beam and sends a signal to the main control chip 4;

[0064] S4, the main control chip 4 calculates the absorbance change ΔA and determines the patient's status according to a preset threshold; when ΔA is at the first preset threshold, it is determined that the patient has active bleeding, triggering the first indicator light 52 to light up and the display screen 51 to display alarm information; when ΔA is at the second preset threshold, it is determined that the patient has chylothorax, triggering the second indicator light 53 to light up and the display screen 51 to display alarm information.

[0065] S5. Even for the same patient, the composition of the drainage fluid is different at different stages of the drainage process. The drainage fluid in the detection chamber 22 will continue to flow into the first reservoir chamber 23. Repeat steps S2 to S4 until the drainage is completed.

Claims

1. A smart monitoring device for thoracic drainage components, comprising a spectrometer (1) and a drainage chamber (2), characterized in that: The spectrometer (1) is equipped with: Optical detection module (3) for detecting drainage fluid; The main control chip (4) is used to calculate the absorbance change ΔA and determine the patient's status according to a preset threshold. Output unit (5) for output signals; Power supply unit (6); The spectrometer (1) has a detection area (11) on one side, and the drainage chamber (2) has a detection end (21) that can extend into the detection area (11) on one side. The detection end (21) has a detection cavity (22) for the drainage fluid to enter. The optical detection module (3) includes a light source module (31) that can emit a light beam to the detection cavity (22) and a detector (32) for receiving the reflected light beam. The detector (32) is connected to the main control chip (4).

2. The intelligent monitoring device for thoracic drainage components according to claim 1, characterized in that: The light source module (31) includes an LED lamp, which has a first lamp core, a second lamp core and a third lamp core. The wavelength range of the first lamp core is 270nm-290nm, the wavelength range of the second lamp core is 410nm-420nm, and the wavelength range of the third lamp core is 340nm-355nm.

3. The intelligent monitoring device for thoracic drainage components according to claim 2, characterized in that: The main control chip (4) has a built-in time control unit that can control the first lamp core, the second lamp core and the third lamp core to light up in sequence at intervals.

4. The intelligent monitoring device for thoracic drainage components according to claim 3, characterized in that: The output unit (5) includes a display screen (51) and an indicator unit, the indicator unit including a first indicator light (52) and a second indicator light (53).

5. The intelligent monitoring device for thoracic drainage components according to claim 4, characterized in that: The main control chip (4) is an STM32G4 series chip with built-in operational amplifier and 12-bit ADC. When ΔA is at the first preset threshold, it is determined that the patient has active bleeding, triggering the first indicator light (52) to light up and the display screen (51) to display alarm information. When ΔA is at the second preset threshold, it is determined that the patient has chylothorax, triggering the second indicator light (53) to light up and the display screen (51) to display alarm information.

6. The intelligent monitoring device for thoracic drainage components according to claim 5, characterized in that: The drainage chamber (2) includes a chamber cover (20) that can open the drainage chamber (2). The chamber cover (20) is provided with a drainage pipe connector (220) that communicates with the detection chamber (22). The chamber cover (20) is connected to a flow rate control structure (8) that can increase the liquid outlet port of the drainage pipe connector (220) as the flow rate increases within a preset flow range at the position corresponding to the position of the drainage pipe connector (220).

7. The intelligent monitoring device for thoracic drainage components according to claim 6, characterized in that: The flow rate control structure (8) includes a connecting ring (81) connected to the cover (20). The connecting ring (81) is provided with a through hole (811) that communicates with the drain pipe connector (220). The connecting ring (81) is also connected with a number of elastic blocks (82) that extend into the bottom of the through hole (811) to slow down the liquid flow rate.

8. The intelligent monitoring device for thoracic drainage components according to any one of claims 1-7, characterized in that: The drainage chamber (2) is made of transparent material; the drainage chamber (2) is divided into a first liquid storage chamber (23), a second liquid storage chamber (24) and a third liquid storage chamber (25). The lower part of the first liquid storage chamber (23) is connected to the lower part of the detection chamber (22), the upper part of the first liquid storage chamber (23) is connected to the upper part of the second liquid storage chamber (24), and the upper part of the second liquid storage chamber (24) is connected to the upper part of the third liquid storage chamber (25).

9. The intelligent monitoring device for thoracic drainage components according to claim 8, characterized in that: The lower part of the drainage chamber (2) is provided with a drain pipe (26) for draining the liquid in the first liquid storage chamber (23), the second liquid storage chamber (24) and the third liquid storage chamber (25), and the drain pipe (26) is provided with a switch valve (27) for controlling its opening and closing.

10. The intelligent monitoring device for thoracic drainage components according to claim 8, characterized in that: A partition plate (7) is provided between the first liquid storage chamber (23) and the detection chamber (22), and the partition plate (7) is provided with a flow hole (71) for the liquid in the detection chamber (22) to flow into the first liquid storage chamber (23).

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