Device for quantifying amount of bleeding in cesarean section

Abstract

The invention relates to the technical field of medical instruments, in particular to a cesarean section bleeding quantity quantification device which comprises a control module and a negative pressure generator, the negative pressure generator is communicated with a filtering treatment structure, a blood collecting structure and a blood quantification structure, and the blood collecting structure comprises a first collecting module and a second collecting module; the first collection module comprises a collection shell, a trigger assembly is installed on the collection shell, the collection shell is connected with the second collection module, a suction opening is formed in the collection shell, the collection shell communicates with a pipeline assembly, the filtering treatment structure is provided with a filtering assembly, and the blood quantification structure comprises a pure blood collection module and a filtered blood collection module. Monitoring modules are arranged in the pure blood collection module and the filtered blood collection module, electric valves are arranged in the pipeline assemblies, and the control module is used for controlling opening and closing of the electric valves according to signals received by the trigger assembly. The blood collection, filtration and quantitative monitoring technology is integrated, and comprehensive and real-time monitoring and accurate quantification of the bleeding amount in the operation process are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a device for quantifying blood loss during cesarean section. Background Art

[0002] In cesarean section, accurate quantification of blood loss is a key step in evaluating the progress of the operation, preventing postoperative complications, and ensuring the safety of patients. However, the blood loss quantification devices currently widely used in the market face many technical difficulties in actual operation, which seriously restricts the optimization of surgical results and the protection of patient safety.

[0003] First of all, the subjectivity and inaccuracy of visual assessment are the primary problems. In a tense surgical environment, doctors need to concentrate on the surgical operation and it is difficult for them to be distracted to accurately assess the amount of bleeding. At the same time, factors such as the lighting conditions in the operating room, the doctor's field of vision, and changes in blood color may interfere with the doctor's visual judgment, resulting in significant deviations in the results of bleeding assessment. This deviation may not only mislead subsequent treatment decisions, but may also endanger the patient's life due to underestimation or overestimation of blood loss.

[0004] Secondly, the problem of accurately calculating the amount of blood in a mixed liquid needs to be solved urgently. During a cesarean section, after the amniotic sac is punctured, the bleeding will mix with the amniotic fluid to form a complex liquid. Existing bleeding volume quantification devices often lack sufficient precision and accuracy when separating and calculating the amount of blood in this mixed liquid. This makes it impossible for doctors to obtain the true bleeding situation, which affects the timely adjustment of surgical strategies and the effective prevention of complications.

[0005] Finally, the lag in real-time monitoring and feedback is another major flaw of current devices. During surgery, real-time changes in bleeding volume are crucial for doctors to judge the progress of the operation and formulate emergency measures. However, existing devices have obvious lags in real-time monitoring and feedback, and cannot provide accurate bleeding volume data in a timely manner. This lag may not only cause doctors to miss the best time for treatment, but may also cause serious surgical complications due to wrong decisions.

[0006] In summary, the existing cesarean section intraoperative blood loss quantification device has multiple technical problems during use, such as inaccurate visual assessment, inaccurate calculation of mixed liquid blood volume, and delayed real-time monitoring and feedback. These problems seriously restrict the safety and effect of the operation. Therefore, the present invention develops a more accurate, real-time and comprehensive cesarean section intraoperative blood loss quantification device, which is of great significance for improving surgical safety, reducing surgical risks and optimizing surgical strategies. Summary of the invention

[0007] To solve the above problems, the present invention provides a device for quantifying the amount of blood loss during cesarean section, which integrates negative pressure suction, filtration processing, blood collection and quantitative monitoring technology, and realizes comprehensive, real-time monitoring and accurate quantification of the amount of blood loss during the operation.

[0008] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: a device for quantifying the amount of blood loss during cesarean section, comprising a control module and a negative pressure generator for generating negative pressure, the negative pressure generator being connected to a filtering processing structure, a blood collecting structure for collecting blood, and a blood quantification structure for storing quantified blood, the blood collecting structure comprising a first collecting module for collecting blood at a surgical incision and a second collecting module for collecting blood at a patient's vagina, the second collecting module being connected to the filtering processing structure;

[0009] The first collection module includes a collection shell, a trigger assembly is installed on the top of the collection shell, the trigger assembly is used to receive a phase change signal, a first adhesion layer is fixedly connected to the bottom of the collection shell, a plurality of suction ports are evenly opened on the inner wall of the collection shell along the circumference, the collection shell is connected with a pipeline assembly, a filter assembly for separating blood and amniotic fluid in a mixed liquid is installed inside the filter processing structure, the blood quantification structure includes a pure blood collection module and a filtered blood collection module, a monitoring module is installed in the pure blood collection module and the filtered blood collection module, the collection shell is respectively connected with the negative pressure generator, the filter processing structure and the blood quantification structure through the pipeline assembly, a plurality of electric valves are installed in the pipeline assembly, the electric valves are all connected with the control module signal, and the control module is used to control the opening and closing of the electric valve according to the phase change signal received by the trigger assembly;

[0010] When the operation is at the stage before puncturing the amniotic sac, the blood collected by the first collection module is pure blood, and the control module opens the corresponding electric valve in the pipeline assembly, so that the blood collected in the first collection module is transported to the pure blood collection module for storage, and the monitoring module performs quantitative real-time monitoring of the collected pure blood;

[0011] When the operation is in the stage from puncturing the amniotic sac to completing the placental separation, the blood collected by the first collection module is a mixed liquid. The control module closes the opened electric valve and opens other corresponding electric valves according to the stage change signal received by the trigger component, so that the blood collected in the first collection module is transported to the filtering processing structure, and the filtered blood in the filtering processing structure is transported to the filtered blood collection module. At the same time, the monitoring module performs quantitative real-time monitoring on the collected filtered blood.

[0012] When the operation is at the stage after the placenta is completely detached, the blood collected by the first collection module is pure blood. The control module changes the stage signal received by the trigger component and the opening and closing state of the corresponding electric valve in the pipeline component, so that the blood collected in the first collection module is transported to the pure blood collection module for storage. At the same time, the monitoring module performs quantitative real-time monitoring of the collected pure blood.

[0013] The technical principle of the above scheme is as follows: by precisely controlling the blood collection and processing methods at different stages, accurate quantification of bleeding volume can be achieved. The device is mainly composed of a control module, a negative pressure generator, a filtration processing structure, a blood collection structure (including a first collection module and a second collection module) and a blood quantification structure (including a pure blood collection module and a filtered blood collection module).

[0014] During the operation, the nature of the blood (pure blood or mixed liquid) will also change depending on the stage of the operation. The present invention identifies the stage of the operation through a trigger component, and the control module intelligently adjusts the opening and closing state of the electric valve in the pipeline component according to the received signal, thereby guiding the blood into different processing paths: in the stage before puncturing the amniotic sac, the blood is pure blood, which is directly transported to the pure blood collection module through the pipeline component for storage, and is monitored in real time by the monitoring module. In the stage from puncturing the amniotic sac to the completion of placental detachment, the blood becomes a mixed liquid. At this time, the blood is transported to the filtering processing structure, and the blood and amniotic fluid are separated by the filtering component. The filtered blood is transported to the filtered blood collection module for storage and monitoring. In the stage after the placenta is completely detached, the blood becomes pure blood again, repeats the previous processing flow, and is transported to the pure blood collection module.

[0015] The above scheme has the following beneficial effects:

[0016] 1. This solution, by designing a blood quantification structure including a pure blood collection module and a filtered blood collection module, can accurately distinguish and quantify the amount of pure blood and blood in mixed liquid in surgery before and after puncturing the amniotic sac. This design overcomes the problem of inaccurate calculation of mixed liquid blood volume in existing devices, provides more accurate data support, and helps doctors more accurately evaluate the surgical effect and patient status.

[0017] 2. This solution realizes real-time monitoring and intelligent control of bleeding volume through the linkage between the control module and the electric valve. According to the changes in the surgical stage, the control module can automatically adjust the opening and closing state of the electric valve to ensure that the blood is correctly transported to the corresponding collection module. This design not only improves the accuracy of bleeding volume quantification, but also reduces the complexity of manual operation and improves the safety and efficiency of surgery.

[0018] 3. This solution, by designing a blood collection structure including a first collection module and a second collection module, can fully collect blood from the surgical incision and the patient's vagina. This design avoids the problem of incomplete blood collection and ensures accurate assessment of the amount of bleeding. At the same time, the connection between the second collection module and the filtering and processing structure further improves the collection and processing efficiency of vaginal blood.

[0019] 4. This solution achieves real-time perception and adaptation of the surgical stage through the cooperation of the trigger component and the control module. According to the different stages of the surgical process, the control module can automatically adjust the strategy of blood loss quantification to ensure that accurate blood loss data can be obtained at different stages. This design improves the flexibility and adaptability of the device, enabling it to better meet the actual needs of cesarean section surgery.

[0020] Furthermore, the pipeline assembly includes a first suction tube, a second suction tube, a negative pressure tube and a plurality of connecting tubes. One ends of the first suction tube and the second suction tube are fixedly connected to each other, and the other ends of the first suction tube and the second suction tube are respectively connected to the pure blood collection module and the filtering treatment structure. The filtering treatment structure is connected to the filtered blood collection module through the connecting tube, and the filtering treatment structure is connected to the negative pressure generator through the negative pressure tube.

[0021] Beneficial effects: By designing a pipeline assembly including a first suction tube, a second suction tube and a plurality of connecting tubes, the present invention provides a clear and efficient flow path for blood. The first suction tube and the second suction tube collect blood directly from the collection shell, ensuring rapid and unimpeded transmission of blood. The connecting tube is responsible for guiding the blood to the pure blood collection module, the filtration processing structure and the filtered blood collection module, realizing the classification processing and storage of blood. This design not only improves the efficiency of blood collection, but also ensures accurate quantification of the amount of bleeding.

[0022] Furthermore, the second collecting module includes a funnel, the bottom of the funnel is connected to the filtering processing structure through a connecting pipe, and the edge of the funnel away from the connecting pipe is fixedly connected to a second adhesive layer.

[0023] Beneficial effects: The second collection module is designed as a funnel, which allows blood in the vagina to be collected more effectively. The second adhesive layer on the funnel can fit the patient's body contour, ensuring that the blood can flow smoothly into the funnel and eventually enter the filtration treatment structure. This optimized blood collection method reduces blood loss and contamination and improves collection efficiency. The adhesive layer design on the top edge of the collection plate allows the collection plate to be firmly attached to the patient's skin, preventing blood from flowing out of the edge of the collection plate. This design not only improves the accuracy of blood collection, but also reduces the patient's discomfort during the operation, improving the comfort and safety of the operation.

[0024] Furthermore, the collecting shell includes a plurality of arc tubes, which are flat structures, and all the arc tubes are sequentially connected to each other. The arc tubes are connected with telescopic tubes, and the arc tubes are connected with the filtering treatment structure through connecting tubes.

[0025] Beneficial effects: The arc tubes are connected by telescopic tubes, which can be flexibly adjusted according to different surgical sites and patient body shapes. This design ensures that the collection shell can fit the surgical incision tightly, effectively collect blood, and avoid the risk of blood loss and contamination. At the same time, the scalability also improves the adaptability of the device to different surgical scenarios, making it widely used in various cesarean section operations.

[0026] Furthermore, the filtering processing structure includes a shell, and the filtering component is fixedly connected to the inner wall of the shell. The filtering component divides the interior of the shell into a filtering chamber and an amniotic fluid collecting chamber. The amniotic fluid collecting chamber is connected to the negative pressure generator through a negative pressure tube.

[0027] Beneficial effects: The filtration processing structure divides the interior of the shell into a filtration chamber and an amniotic fluid collection chamber through a filtration component, thereby achieving effective separation of blood and amniotic fluid. This design overcomes the problem of inaccurate calculation of the amount of blood in mixed liquids in existing devices, and can more accurately quantify the amount of bleeding and amniotic fluid, providing doctors with more accurate data support. At the same time, this separation method also reduces the risk of blood contamination and improves the quality of blood collection. The amniotic fluid collection chamber is connected to the negative pressure generator through a negative pressure tube, ensuring that the amniotic fluid can be quickly and effectively drawn into the collection chamber. This design not only improves the efficiency of amniotic fluid collection, but also maintains the continuity and stability of the negative pressure system, which helps to reduce interference and inconvenience during surgery.

[0028] Further, the trigger assembly includes a pressure sensor and an infrared sensor. The pressure sensor is respectively installed at the liquid inlet of the first suction tube and the second suction tube. The pressure sensor is used to monitor the change of liquid pressure at the suction port in real time. The infrared sensor is installed on the top of the collection shell. The infrared sensor is used to monitor the hands of medical staff in real time. The pressure sensor and the infrared sensor are both connected to the control module signal.

[0029] When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to a preset threshold value in the control module, it is determined that the operation is at the stage before puncturing the amniotic sac, and pure blood is sucked. The control module opens the corresponding valve according to the determination result;

[0030] When the control module receives a liquid pressure value monitored by the pressure sensor that is lower than a preset threshold in the control module, and before the pressure changes, the infrared sensor detects that the medical staff's hand stays above the infrared sensor, and it is judged that the operation is in the stage from puncturing the amniotic sac to completing the placental separation, then the liquid sucked is a mixed liquid, and the control module changes the opening and closing state of the corresponding valve according to the judgment result;

[0031] When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to the threshold value preset in the control module, and before the pressure changes, the infrared sensor again detects that the medical staff's hand remains above the infrared sensor, and it is judged that the operation is at the stage after the placenta is completely detached, then pure blood is sucked, and the control module opens the corresponding valve based on the judgment result.

[0032] Beneficial effects: By using a pressure sensor to monitor the changes in liquid pressure at the suction port in real time, and combining it with an infrared sensor to monitor the hands of medical staff in real time, the present invention can intelligently identify the different stages of the operation (before puncturing the amniotic sac, from puncturing the amniotic sac to completion of placental detachment, and after complete placental detachment). This intelligent recognition capability ensures that the device can automatically adjust the working mode at different stages of the operation, thereby accurately quantifying the amount of bleeding. According to the results of the intelligent recognition of the surgical stage, the control module can automatically open or close the corresponding valve to guide the blood to the pure blood collection module and the filtered blood collection module respectively. This design overcomes the problem of inaccurate calculation of the amount of mixed liquid blood in existing devices, realizes the accurate quantification of the amount of bleeding, and provides doctors with more accurate data support.

[0033] Intelligent trigger components and control modules reduce the manual operation of doctors during surgery and reduce the risk of human error. At the same time, accurate quantification of bleeding volume helps doctors to timely evaluate the effect of surgery and prevent complications, thereby improving the safety and efficiency of surgery.

[0034] Further, the monitoring module includes a flow meter sensor and a weight sensor, the flow sensor is installed at the liquid inlet of the pure blood collection module and the filtered blood collection module, the flow sensor is used to monitor the flow rate of blood entering the pure blood collection module and the filtered blood collection module, the weight sensor is installed at the bottom of the pure blood collection module and the filtered blood collection module, the weight sensor is used to monitor the weight of blood entering the pure blood collection module and the filtered blood collection module, and both the flow meter sensor and the weight sensor are connected to the control module signal;

[0035] When the storage volume reaches a preset threshold, the monitoring module sends an alarm signal to the control module to remind the doctor.

[0036] Beneficial effects: The flow meter sensor is installed at the liquid inlet of the pure blood collection module and the filtered blood collection module, and can monitor the blood flow entering the two modules in real time. This design ensures real-time monitoring of the amount of bleeding and provides accurate data support for doctors. The weight sensor is installed at the bottom of the pure blood collection module and the filtered blood collection module, and can accurately measure the weight of the blood in the two modules. By combining the dual monitoring of flow and weight, the present invention achieves accurate quantification of the amount of bleeding and improves the accuracy and reliability of the data.

[0037] When the storage volume reaches the preset threshold, the monitoring module will send an alarm signal to the control module to remind the doctor to take appropriate measures in time. This design helps doctors to timely evaluate the surgical effect and prevent complications, thereby improving the safety and efficiency of the operation. The alarm function can also avoid blood spillage or waste, ensuring the rational use of medical resources.

[0038] Furthermore, a detection component and a circulation pump are installed in the amniotic fluid collection chamber, the input end of the circulation pump is connected to the amniotic fluid collection chamber, and the output end of the circulation pump is connected to the filter chamber. The detection component includes an optical sensor and an image sensor. The optical sensor is used to emit light of a specific wavelength to the liquid in the amniotic fluid collection chamber, and the image sensor is used to receive the reflected or transmitted optical signal captured by the optical sensor, and analyze the optical signal using an image processing algorithm and transmit the analysis result to the control module;

[0039] The image sensor is connected to the control module signal. The control module monitors the blood content in the amniotic fluid in real time according to the analysis results of the image sensor. When the blood content reaches the preset threshold in the control component, the control module starts the circulation pump to transfer the amniotic fluid collected in the amniotic fluid collection chamber to the filter chamber for secondary filtration.

[0040] Beneficial effects: The optical sensor and image sensor in the detection component can monitor the blood content in the amniotic fluid in real time. By emitting light of a specific wavelength to the liquid in the amniotic fluid collection chamber and receiving the reflected or transmitted optical signal, the image sensor can analyze the signal using an image processing algorithm to accurately determine the proportion of blood in the amniotic fluid. The control module can adjust the working state of the circulation pump in real time based on the analysis results of the image sensor. When the blood content exceeds the preset threshold, the control module starts the circulation pump to pump the liquid in the amniotic fluid collection chamber into the filter chamber for secondary filtration. This real-time monitoring and precise control design ensures that the blood in the mixed liquid is completely filtered and collected, avoiding the problem of incomplete collection or inaccurate quantification.

[0041] Furthermore, it also includes an early warning module, which includes an indicator light and a buzzer. The indicator light and the buzzer are both connected to the control module signal. When the monitoring module or the detection module detects an abnormal situation, the control module sends an instruction to the early warning module. The indicator light is used to visually remind the doctor, and the buzzer is used to auditorily remind the doctor.

[0042] Beneficial effects: The indicator light and buzzer in the early warning module remind doctors of abnormal conditions by visual and auditory means respectively. When the monitoring module or the detection module detects that key indicators such as abnormal blood content and excessive storage volume deviate from the normal range, the control module will immediately send instructions to the early warning module to start the indicator light flashing and the buzzer alarm. This multiple alarm mechanism ensures that doctors can detect abnormal conditions at the first time and take corresponding measures quickly, thereby effectively reducing surgical risks and the probability of complications. Through real-time monitoring and early warning, doctors can more accurately grasp the bleeding during the operation, adjust the surgical strategy in time, and ensure the safety and reliability of the operation. The addition of the early warning module also improves the doctor's control over the surgical process and reduces surgical errors or complications caused by the failure to detect abnormal conditions in time.

[0043] Furthermore, it also includes an interactive module, which is used to display and process the monitoring data and alarm information of the monitoring module, the detection module and the early warning module in real time. The interactive module includes a touch screen display, which is used by medical staff to view the amount of bleeding, the blood content in the amniotic fluid, and the alarm information of the early warning module in real time; at the same time, it is also used by medical staff to set parameters of the control module.

[0044] Beneficial effects: The interactive module displays the monitoring data and alarm information of the monitoring module, detection module and early warning module in real time through the touch screen display. This intuitive display method enables medical staff to quickly understand the key indicators and abnormal conditions during the operation, improving the transparency and controllability of the operation. The touch screen display also provides a convenient operation interface. Medical staff can set parameters for the control module through simple touch operations, such as adjusting the blood content threshold, setting the alarm volume, etc., thereby improving the flexibility and ease of use of the equipment. Medical staff can view key data such as bleeding volume and blood content in amniotic fluid in real time through the touch screen display, which can more accurately evaluate the surgical effect and patient status, thereby formulating more reasonable surgical strategies and treatment plans. This real-time data support helps reduce decision-making errors and uncertainties during the operation and improves the efficiency and accuracy of the operation.

[0045] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic diagram of the use of an embodiment of the device for quantifying blood loss during cesarean section of the present invention;

[0047] Figure 2 It is an isometric view of the first module and the second module in the embodiment of the device for quantifying the amount of blood loss during cesarean section of the present invention;

[0048] Figure 3 It is an isometric view of the second module in the embodiment of the device for quantifying the amount of blood loss during cesarean section of the present invention;

[0049] Figure 4 It is a cross-sectional view of the filtering processing structure in the embodiment of the device for quantifying the amount of bleeding during cesarean section of the present invention;

[0050] Figure 5 It is a flow chart of an embodiment of a device for quantifying blood loss during cesarean section of the present invention;

[0051] Figure 6 for Figure 1 A magnified schematic diagram of center A.

[0052] The figure marks in the drawings of the specification include: 1. negative pressure generator; 2. filtration processing structure; 201. shell; 202. filter component; 203. filter chamber; 204. amniotic fluid collection chamber; 3. blood quantification structure; 301. pure blood collection module; 302. filtered blood collection module; 4. collection shell; 401. suction port; 402. arc tube; 5. funnel; 6. first suction tube; 7. second suction tube; 8. negative pressure tube; 9. connecting tube. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The following is further described in detail through specific implementation methods:

[0057] Embodiment 1:

[0058] As attached Figures 1 to 6 As shown: A device for quantifying the amount of blood loss during cesarean section, including a control module and a negative pressure generator 1 for generating negative pressure, the negative pressure generator is connected to a filtering processing structure 2, a blood collecting structure for collecting blood and a blood quantification structure 3 for storing quantified blood, the blood collecting structure includes a first collecting module for collecting blood at a surgical incision and a second collecting module for collecting blood at a patient's vagina, the second collecting module is connected to the filtering processing structure 2.

[0059] The first collecting module includes a collecting shell 4, a trigger assembly is installed on the top of the collecting shell 4, the trigger assembly is used to receive the stage change signal, the collecting shell 4 includes a plurality of arc tubes 402, the arc tubes 402 are flat structures, all the arc tubes 402 are connected to each other in sequence (in this embodiment, the long axis radius of the arc tube 402 is not more than 2 cm, and the short axis radius is not more than 1 cm), the arc tubes 402 are connected by telescopic tubes, and the arc tubes 402 are connected to the filtering treatment structure 2 through the connecting tube 9. The inner wall of the collection shell 4 is evenly provided with a plurality of suction ports 401 along the circumference. The collection shell 4 is connected to a pipeline assembly. The filtering treatment structure 2 includes a shell 201. The inner wall of the shell 201 is fixedly connected to a filtering assembly 202 for separating blood and amniotic fluid in a mixed liquid. The filtering assembly 202 may use a cell screen, a microporous membrane, a fiber filter paper, and a nanofiltration membrane. In this embodiment, the filtering assembly 202 uses a cell screen. The filtering assembly 202 divides the interior of the shell 201 into a filtering chamber 203 and an amniotic fluid collecting chamber 204. The amniotic fluid collecting chamber 204 is connected to the negative pressure generator 1 through a negative pressure tube 8. A first adhesive layer is fixedly connected to the bottom of the collection shell 4. In this embodiment, a medical-grade adhesive film or a hydrocolloid dressing may be used for the first adhesive layer. A lock buckle for placing a first suction tube 6 and a second suction tube 7 is installed on the side wall of the collection shell 4. In this embodiment, the lock buckle is a magnetic buckle.

[0060] The blood quantification structure 3 includes a pure blood collection module 301 and a filtered blood collection module 302. The pure blood collection module 301 and the filtered blood collection module 302 are both detachably connected, and the maximum internal capacity of the pure blood collection module 301 and the filtered blood collection module 302 is 2000 ml. The pure blood collection module 301 and the filtered blood collection module 302 are equipped with a monitoring module. The pipeline assembly includes a first suction tube 6, a second suction tube 7, a negative pressure tube 8 and a plurality of connecting tubes 9. One end of the first suction tube 6 and the second suction tube 7 are fixedly connected to each other, that is, a one-tube double-core structure. The first suction tube 6 and the second suction tube 7 are fixed to the side of the collection shell 4 by a lock when not in use. The other ends of the first suction tube 6 and the second suction tube 7 are respectively connected to the pure blood collection module 301 and the filtering treatment structure 2. The filtering treatment structure 2 is connected to the filtered blood collection module 302 through the connecting tube 9, and the filtering treatment structure 2 is connected to the negative pressure generator 1 through the negative pressure tube 8. Several electric valves are installed in the pipeline component, and the electric valves are all connected to the control module signal. The control module is used to control the opening and closing of the electric valves according to the signal received by the trigger component.

[0061] The second collection module includes a funnel 5, the bottom of the funnel 5 is connected to the filtering treatment structure 2 through a connecting tube 9, a second adhesive layer is fixedly connected to the edge of the funnel 5 away from the connecting tube 9, the connecting tube 9 connected to the arc tube 402 is connected to the connecting tube 9 at the bottom of the funnel 5, and in this embodiment, a medical grade adhesive film or a hydrocolloid dressing can be selected for the second adhesive layer.

[0062] The trigger component includes a pressure sensor and an infrared sensor. The pressure sensor is respectively installed at the liquid inlet of the first suction tube 6 and the second suction tube 7. The pressure sensor is used to monitor the liquid pressure change at the suction port 401 in real time. The infrared sensor is installed on the top of the collection shell 4. The infrared sensor is used to monitor the hands of medical staff in real time. The pressure sensor and the infrared sensor are both connected to the control module signal.

[0063] When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to a preset threshold value in the control module, it determines that the operation is in the stage before puncturing the amniotic sac, and pure blood is sucked. The control module opens the corresponding electric valve in the pipeline assembly, so that the blood collected in the first collection module is transported to the pure blood collection module 301 for storage. At the same time, the monitoring module performs quantitative real-time monitoring of the collected pure blood.

[0064] When the control module receives a liquid pressure value monitored by the pressure sensor that is lower than a preset threshold in the control module, and before the pressure changes, the infrared sensor detects that the medical staff's hand stays above the infrared sensor, and it is judged that the operation is in the stage from puncturing the amniotic sac to completing the placental separation, then the mixed liquid is sucked, and the control module closes the opened electric valve and opens other corresponding electric valves according to the stage change signal received by the trigger component, so that the blood collected in the first collection module is transported to the filtering processing structure 2, and the filtered blood filtered in the filtering processing structure 2 is transported to the filtered blood collection module 302. At the same time, the monitoring module performs quantitative real-time monitoring of the collected filtered blood.

[0065] When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to a preset threshold in the control module, and before the pressure changes, the infrared sensor again detects that the medical staff's hand remains above the infrared sensor, and it is determined that the operation is at the stage after the placenta is completely detached, then pure blood is sucked. The control module changes the stage signal received by the trigger component and controls the opening and closing state of the corresponding electric valve in the pipeline component, so that the blood collected in the first collection module is transported to the pure blood collection module 301 for storage. At the same time, the monitoring module performs quantitative real-time monitoring of the collected pure blood.

[0066] The monitoring module includes a flow meter sensor and a weight sensor. The flow sensor is installed at the liquid inlet of the pure blood collection module 301 and the filtered blood collection module 302. The flow sensor is used to monitor the flow rate of blood entering the pure blood collection module 301 and the filtered blood collection module 302. The weight sensor is installed at the bottom of the pure blood collection module 301 and the filtered blood collection module 302. The weight sensor is used to monitor the weight of blood entering the pure blood collection module 301 and the filtered blood collection module 302. Both the flow meter sensor and the weight sensor are connected to the control module signal. When the storage amount reaches a preset threshold, the monitoring module sends an alarm signal to the control module to remind the doctor.

[0067] The specific implementation process is as follows: After the patient is anesthetized, preoperative preparation is carried out in accordance with the surgical specifications. The medical staff properly adheres the funnel 5 of the second collection module to the bottom of the patient's buttocks through the adhesion layer to ensure that the mixed liquid (including blood and amniotic fluid) flowing out of the vagina can be effectively collected. After routine disinfection, the first collection module is sleeved on the patient's abdomen. The diameter of the arc tube 402 of the first collection module can be adjusted according to the patient's personal information (such as body shape or abdominal size) and the telescopic tube (the adjustable diameter range in this embodiment is 10-20cm), ensuring that sufficient surgical incision space is reserved, and a sterile surgical towel is laid.

[0068] At the beginning of the operation, the negative pressure generator 1 is turned on and adjusted to a stable negative pressure level that has no effect on the operation. Generally, it is adjusted to an appropriate negative pressure power (such as between -100 mmHg and -400 mmHg, and the specific value needs to be determined according to the actual situation of the operation and the doctor's judgment) to ensure that the blood and the mixed liquid can be effectively sucked. The blood near the surgical incision of the patient can be collected through the suction port 401 on the first collection module to prevent the blood from flowing along the patient's limbs onto the surgical drape, thereby ensuring the integrity and quantification accuracy of the collected blood.

[0069] When the operation begins, but the amniotic sac has not yet been punctured, when the liquid pressure value monitored by the pressure sensor matches the threshold preset in the control module, the control module opens the electric valve corresponding to the first suction tube 6, and collects the blood in the abdominal cavity into the pure blood collection module 301 through the first suction tube 6. The flow meter sensor and weight sensor in the monitoring module perform quantitative real-time monitoring of the collected pure blood.

[0070] When the operation is performed to puncture the amniotic sac, a mixed liquid (a mixture of amniotic fluid and blood) appears, and the pressure value monitored by the pressure sensor will change and be lower than the preset threshold. Prior to this, the infrared sensor detects that the medical staff's hand stays above it (enough time or performs specific actions), indicating that the operation has entered a new stage. In order to avoid misjudgment, it is necessary to ensure that the signals of the pressure sensor and the infrared sensor are triggered at the same time to perform the corresponding operation. The control module closes the electric valve with the first suction tube 6 and opens the electric valve of the second suction tube 7 according to the received signal. The mixed liquid in the abdominal cavity is collected and transmitted to the filter chamber 203 in the filtering processing structure 2 through the second suction tube 7, and then the amniotic fluid in the mixed liquid is filtered into the amniotic fluid collection chamber 204 through the filtering component 202, and the blood in the mixed liquid is filtered and transmitted to the filtered blood collection module 302. The flow meter sensor and weight sensor in the monitoring module in the filtered blood collection module 302 perform quantitative real-time monitoring of the collected filtered blood.

[0071] When the operation reaches the stage where the placenta is completely detached, the liquid pressure value monitored by the pressure sensor matches the threshold preset in the control module again. Prior to this, the infrared sensor again detects that the medical staff's hand is resting above it, indicating that the operation is about to end or has entered the final stage. Based on the received signal, the control module closes the electric valve of the second suction tube 7 and reopens the electric valve of the first suction tube 6. The blood in the abdominal cavity is collected into the pure blood collection module 301 through the first suction tube 6. The flow meter sensor and weight sensor in the monitoring module perform quantitative real-time monitoring of the collected pure blood.

[0072] At the same time, the funnel 5 of the second collection module collects the mixed liquid flowing out of the patient's vaginal opening, and transmits it to the filter chamber 203 in the filtering processing structure 2 through the connecting tube 9, and then passes through the filtering component 202 to filter the amniotic fluid in the mixed liquid into the amniotic fluid collection chamber 204, and the blood in the mixed liquid is filtered and transmitted to the filtered blood collection module 302. The flow meter sensor and weight sensor in the monitoring module in the filtered blood collection module 302 perform quantitative real-time monitoring of the collected filtered blood.

[0073] During the operation, the real-time monitoring data of the pure blood collection module 301 and the filtered blood collection module 302 are added together to obtain the total amount of bleeding during the cesarean section. The amount of bleeding during the operation is monitored and recorded in real time, providing reliable data support for medical staff, thereby improving the safety of the operation and the patient's recovery quality.

[0074] Embodiment 2:

[0075] The difference from Example 1 is that a detection component and a circulation pump are installed in the amniotic fluid collecting chamber 204, the input end of the circulation pump is connected to the amniotic fluid collecting chamber 204, and the output end of the circulation pump is connected to the filter chamber 203. The detection component includes an optical sensor and an image sensor. The optical sensor is used to emit light of a specific wavelength to the liquid in the amniotic fluid collecting chamber 204 (the light in this embodiment can be infrared light, visible light or other wavelengths suitable for detecting the presence of blood), and the image sensor is used to receive the reflected or transmitted optical signals captured by the optical sensor, and use an image processing algorithm to analyze the optical signals and transmit the analysis results to the control module.

[0076] The image sensor is connected to the control module signal. The control module monitors the blood content in the amniotic fluid in real time according to the analysis results of the image sensor. When the blood content is greater than the threshold preset in the control component, the control module starts the circulation pump to transfer the amniotic fluid collected in the amniotic fluid collection chamber 204 to the filter chamber 203 for secondary filtration.

[0077] The specific implementation process is as follows: during the operation, the mixed liquid of amniotic fluid and blood is collected into the filter chamber 203 in the filtering processing structure 2 through the second suction tube 7, and then the amniotic fluid in the mixed liquid is filtered into the amniotic fluid collection chamber 204 through the filtering component 202, and the blood in the mixed liquid is filtered and transmitted to the filtered blood collection module 302.

[0078] The optical sensor in the amniotic fluid collection chamber 204 emits light of a specific wavelength to the amniotic fluid, which can penetrate the amniotic fluid and be reflected or transmitted back. The image sensor receives the reflected or transmitted optical signal captured by the optical sensor and converts it into digital image data. The digital image data received by the image sensor is analyzed by an image processing algorithm, which can identify and calculate the proportion of blood components (such as hemoglobin) in the image, thereby obtaining the blood content in the amniotic fluid.

[0079] The control module receives the analysis results of the image sensor and monitors the blood content in the amniotic fluid in real time. A blood content threshold is preset in the control module. When the blood content monitored in real time exceeds this threshold, the control module determines that too much blood is mixed in the amniotic fluid and further processing is required, and the control module automatically starts the circulation pump. The circulation pump pumps the liquid in the amniotic fluid collection chamber 204 into the filter chamber 203 to perform a secondary filtration on the amniotic fluid. Under the action of the circulation pump, the amniotic fluid is circulated and filtered multiple times in the filter chamber 203 to ensure that the blood in the mixed liquid is completely filtered and collected in the filtered blood collection module 302 to avoid incomplete collection or inaccurate quantification.

[0080] Embodiment 3:

[0081] The difference from Example 2 is that it also includes an early warning module, which includes an indicator light and a buzzer. The indicator light and the buzzer are both connected to the control module signal. When the monitoring module or the detection module detects an abnormal situation, the control module sends an instruction to the early warning module. The indicator light is used to remind the doctor visually, and the buzzer is used to remind the doctor auditorily.

[0082] The specific implementation process is as follows: when the monitoring module (such as the parameters of the flow sensor and the pressure sensor) or the detection module (such as the optical sensor and the image sensor, etc.) detects abnormal data, the control module will immediately send instructions to the early warning module.

[0083] After receiving the command from the control module, the indicator light of the early warning module will light up in a specific color or flashing mode, visually reminding the doctor that there is an abnormal situation. At the same time, the buzzer will sound at a specific frequency or tone, further reminding the doctor's attention in an auditory way. Through the dual reminders of the indicator light and the buzzer, the doctor can more intuitively understand the abnormal situation during the current operation and respond quickly. For example, when the flow is too large, the yellow indicator light will light up in a fast flashing mode; when the blood quantitative data exceeds the standard, the red indicator light will be displayed in a continuous lighting mode; at the same time, the buzzer will sound at a specific frequency (such as a high-frequency short sound) or tone (such as a sharp sound).

[0084] After receiving the warning signal, the doctor observes the color and flashing pattern of the indicator light and the sound characteristics of the buzzer, determines the type of abnormality and takes appropriate measures. For example, when the red indicator light continues to light up and the buzzer makes a sharp sound, the doctor should quickly check the blood collection and check whether there is heavy bleeding. At the same time, the doctor also needs to observe the patient's vital signs, such as heart rate, blood pressure, etc., to assess the severity of the bleeding and its impact on the patient and take appropriate measures.

[0085] Embodiment 4:

[0086] The difference from Example 3 is that it also includes an interactive module, which is used to display and process the monitoring data and alarm information of the monitoring module, the detection module and the early warning module in real time. The interactive module includes a touch screen display. Medical staff can view the amount of bleeding, the blood content in the amniotic fluid, and the alarm information of the early warning module in real time through the touch screen display; at the same time, medical staff can also set parameters for the control module through the touch screen display.

[0087] The specific implementation process is as follows: Medical staff can view key monitoring data such as bleeding volume, blood content in amniotic fluid, and alarm information of the early warning module in real time through the touch screen display. These data and information are presented in the form of charts (such as line charts, bar charts), numbers or text, which is convenient for medical staff to quickly understand and judge. Medical staff can set parameters for the control module through the touch screen display, such as setting the safety threshold of blood content, adjusting the monitoring frequency, and selecting the alarm prompt method. These settings can be flexibly adjusted according to surgical needs and patient conditions to ensure the accuracy and reliability of the system. These settings can be flexibly adjusted according to surgical needs and patient conditions to ensure the accuracy and reliability of the system. When the early warning module issues an alarm, the interactive module will highlight the alarm information on the touch screen display, such as using a red border, flashing prompts, etc. to attract the attention of medical staff. At the same time, the interactive module will also provide corresponding processing suggestions or operation steps to help medical staff take quick measures to deal with abnormal situations.

[0088] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A device for quantifying the amount of blood loss during cesarean section, comprising a control module and a negative pressure generator (1) for generating negative pressure, the negative pressure generator being connected to a filtering processing structure (2), a blood collecting structure for collecting blood, and a blood quantification structure (3) for storing quantified blood, characterized in that: The blood collection structure comprises a first collection module for collecting blood at a surgical incision and a second collection module for collecting blood at a patient's vagina, the second collection module being connected to a filtering processing structure (2); The first collection module comprises a collection shell (4), a trigger assembly is installed on the top of the collection shell (4), and the trigger assembly is used to receive a phase change signal. The bottom of the collection shell (4) is fixedly connected to a first adhesive layer. The inner wall of the collection shell (4) is evenly provided with a plurality of suction ports (401) along the circumference. The collection shell (4) is connected to a pipeline assembly. A filter assembly (202) for separating blood and amniotic fluid in a mixed liquid is installed inside the filter processing structure (2). The blood quantification structure (3) comprises a pure blood collection module (301) and a filtered blood collection module (302). A monitoring module is installed inside the pure blood collection module (301) and the filtered blood collection module (302). The collection shell (4) is respectively connected to the negative pressure generator (1), the filter processing structure (2) and the blood quantification structure (3) through the pipeline assembly. A plurality of electric valves are installed in the pipeline assembly. The electric valves are all connected to the control module signal. The control module is used to control the opening and closing of the electric valves according to the phase change signal received by the trigger assembly. When the operation is at the stage before puncturing the amniotic sac, the blood collected by the first collection module is pure blood, and the control module opens the corresponding electric valve in the pipeline assembly, so that the blood collected in the first collection module is transported to the pure blood collection module (301) for storage, and the monitoring module performs quantitative real-time monitoring of the collected pure blood; When the operation is in the stage from puncturing the amniotic sac to completing the placental separation, the blood collected by the first collection module is a mixed liquid. The control module closes the opened electric valve and opens other corresponding electric valves according to the stage change signal received by the trigger component, so that the blood collected in the first collection module is transported to the filtering processing structure (2), and the filtered blood filtered in the filtering processing structure (2) is transported to the filtered blood collection module (302). At the same time, the monitoring module performs quantitative real-time monitoring on the collected filtered blood. When the operation is at the stage after the placenta is completely detached, the blood collected by the first collection module is pure blood. The control module changes the stage signal received by the trigger component and the opening and closing state of the corresponding electric valve in the pipeline component, so that the blood collected in the first collection module is transported to the pure blood collection module (301) for storage. At the same time, the monitoring module performs quantitative real-time monitoring of the collected pure blood.

2. The device for quantifying blood loss during cesarean section according to claim 1, characterized in that: The pipeline assembly comprises a first suction tube (6), a second suction tube (7), a negative pressure tube (8) and a plurality of connecting tubes (9); one end of the first suction tube (6) and the second suction tube (7) are fixedly connected to each other; the other ends of the first suction tube (6) and the second suction tube (7) are respectively connected to the pure blood collection module (301) and the filtering treatment structure (2); the filtering treatment structure (2) is connected to the filtered blood collection module (302) through the connecting tube (9); and the filtering treatment structure (2) is connected to the negative pressure generator (1) through the negative pressure tube (8).

3. The device for quantifying blood loss during cesarean section according to claim 2, characterized in that: The second collection module comprises a funnel (5), the bottom of the funnel (5) is connected to the filtering treatment structure (2) via a connecting pipe (9), and a second adhesive layer is fixedly connected to an edge of the funnel (5) away from the connecting pipe (9).

4. The device for quantifying blood loss during cesarean section according to claim 3, characterized in that: The collecting shell (4) comprises a plurality of arc-shaped tubes (402), the arc-shaped tubes (402) are of flat structure, all the arc-shaped tubes (402) are connected to each other in sequence, telescopic tubes are connected between the arc-shaped tubes (402), and the arc-shaped tubes (402) are connected to the filtering treatment structure (2) through the connecting tube (9).

5. The device for quantifying blood loss during cesarean section according to claim 4, characterized in that: The filtering and processing structure (2) comprises a housing (201), a filtering assembly (202) fixedly connected to the inner wall of the housing (201), the filtering assembly (202) dividing the interior of the housing (201) into a filtering chamber (203) and an amniotic fluid collecting chamber (204), and the amniotic fluid collecting chamber (204) is connected to the negative pressure generator (1) via a negative pressure tube (8).

6. The device for quantifying blood loss during cesarean section according to claim 5, characterized in that: The trigger assembly comprises a pressure sensor and an infrared sensor. The pressure sensors are respectively mounted at the liquid inlets of the first suction tube (6) and the second suction tube (7). The pressure sensors are used to monitor the change of the liquid pressure at the suction port (401) in real time. The infrared sensor is mounted on the top of the collection shell (4). The infrared sensor is used to monitor the hands of the medical staff in real time. Both the pressure sensor and the infrared sensor are connected to the control module signal. When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to a preset threshold value in the control module, it is determined that the operation is at the stage before puncturing the amniotic sac, and pure blood is sucked. The control module opens the corresponding valve according to the determination result; When the control module receives a liquid pressure value monitored by the pressure sensor that is lower than a preset threshold in the control module, and before the pressure changes, the infrared sensor detects that the medical staff's hand stays above the infrared sensor, and it is judged that the operation is in the stage from puncturing the amniotic sac to completing the placental separation, then the liquid sucked is a mixed liquid, and the control module changes the opening and closing state of the corresponding valve according to the judgment result; When the control module receives a liquid pressure value monitored by the pressure sensor that is equal to the threshold value preset in the control module, and before the pressure changes, the infrared sensor again detects that the medical staff's hand remains above the infrared sensor, and it is judged that the operation is at the stage after the placenta is completely detached, then pure blood is sucked, and the control module opens the corresponding valve based on the judgment result.

7. The device for quantifying blood loss during cesarean section according to claim 6, characterized in that: The monitoring module comprises a flow meter sensor and a weight sensor. The flow sensor is installed at the liquid inlet of the pure blood collection module (301) and the filtered blood collection module (302). The flow sensor is used to monitor the flow rate of blood entering the pure blood collection module (301) and the filtered blood collection module (302). The weight sensor is installed at the bottom of the pure blood collection module (301) and the filtered blood collection module (302). The weight sensor is used to monitor the weight of blood entering the pure blood collection module (301) and the filtered blood collection module (302). Both the flow meter sensor and the weight sensor are connected to the control module signal. When the storage volume reaches a preset threshold, the monitoring module sends an alarm signal to the control module to remind the doctor.

8. The device for quantifying blood loss during cesarean section according to claim 7, characterized in that: A detection component and a circulation pump are installed in the amniotic fluid collection chamber (204); the input end of the circulation pump is in communication with the amniotic fluid collection chamber (204); the output end of the circulation pump is in communication with the filter chamber (203); the detection component comprises an optical sensor and an image sensor; the optical sensor is used to emit light of a specific wavelength to the liquid in the amniotic fluid collection chamber (204); the image sensor is used to receive a reflected or transmitted optical signal captured by the optical sensor, and analyzes the optical signal using an image processing algorithm and transmits the analysis result to the control module; The image sensor is connected to the control module signal, and the control module monitors the blood content in the amniotic fluid in real time according to the analysis results of the image sensor. When the blood content is greater than a threshold value preset in the control component, the control module starts the circulation pump to transfer the amniotic fluid collected in the amniotic fluid collection chamber (204) to the filter chamber (203) for secondary filtration.

9. The device for quantifying blood loss during cesarean section according to claim 8, characterized in that: It also includes an early warning module, which includes an indicator light and a buzzer. The indicator light and the buzzer are both connected to the control module signal. When the monitoring module or the detection module detects an abnormal situation, the control module sends an instruction to the early warning module. The indicator light is used to visually remind the doctor, and the buzzer is used to auditorily remind the doctor.

10. The device for quantifying blood loss during cesarean section according to claim 9, characterized in that: It also includes an interactive module, which is used to display and process the monitoring data and alarm information of the monitoring module, detection module and early warning module in real time. The interactive module includes a touch screen display, which is used by medical staff to check the amount of bleeding, the blood content in the amniotic fluid, and the alarm information of the early warning module; at the same time, it is also used by medical staff to set parameters of the control module.

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