A dynamic metering device for postpartum blood loss

Abstract

The application relates to the field of medical body fluid processing devices, and discloses a postpartum hemorrhage dynamic metering device, which comprises a basin body, the inside of the basin body is provided with a first flow guide plate, a second flow guide plate and a third flow guide plate from top to bottom, the inside of the second flow guide plate is provided with a trapezoidal flow guide groove for preliminarily separating amniotic fluid and blood, the inside of the third flow guide plate is provided with an arc-shaped flow guide groove for re-separating the amniotic fluid and the blood, the arc-shaped flow guide groove is provided with a flow blocking hole in the inside, the inclination angle of the first flow guide plate is smaller than that of the second flow guide plate, and the inclination angle of the second flow guide plate is smaller than that of the third flow guide plate. The amniotic fluid and the blood are guided through the first flow guide plate, the second flow guide plate and the third flow guide plate with different inclination angles, and the guided amniotic fluid and blood are separated through a separation mechanism and a cooperation mechanism, so that the postpartum hemorrhage of a puerpera during and after childbirth can be accurately metered.

Description

Technical Field

[0001] This invention relates to the field of medical body fluid treatment devices, specifically a dynamic measurement device for postpartum hemorrhage. Background Technology

[0002] Postpartum hemorrhage is the most dangerous obstetric complication after childbirth. It usually refers to bleeding of more than 500 ml in women who have a vaginal delivery and more than 1,000 ml in women who have a cesarean section within 24 hours after delivery. It is one of the important causes of maternal death. Therefore, timely and accurate measurement of the amount of bleeding is an important part of the treatment of women with postpartum hemorrhage.

[0003] Currently, when measuring the amount of blood loss in postpartum hemorrhage, a blood collection basin is usually used to collect the blood. After the blood collection is completed, the blood volume is observed from the scale line on the outside of the blood collection basin to determine whether the amount of postpartum bleeding is within a safe range.

[0004] However, during childbirth, in addition to blood, mothers also expel a mixture of amniotic fluid, uterine secretions, and a small amount of tissue residue. If this mixture mixes with blood and flows into the blood collection basin, it can directly lead to an incorrect assessment of the amount of bleeding in the blood collection basin. In other words, the actual amount of bleeding cannot be accurately confirmed. When medical staff cannot obtain an accurate amount of bleeding in real time, it may pose a serious threat to the mother's life.

[0005] In view of this, the present invention provides a dynamic measurement device for postpartum hemorrhage. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a dynamic measurement device for postpartum hemorrhage, which solves the problem that if the postpartum hemorrhage mixture mixes with blood and flows into the blood collection basin, it will directly lead to incorrect observation of the amount of bleeding in the blood collection basin, thus failing to obtain accurate bleeding volume in real time and affecting the life safety of the postpartum woman.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a dynamic measurement device for postpartum hemorrhage, comprising a basin, wherein a first guide plate, a second guide plate, and a third guide plate are respectively inclinedly arranged from top to bottom inside the basin. The second guide plate has a trapezoidal guide channel inside for preliminary separation of amniotic fluid and blood, and the third guide plate has an arc-shaped guide channel inside for further separation of amniotic fluid and blood. The arc-shaped guide channel has a flow-cutting hole inside. The inclination angle of the first guide plate is smaller than that of the second guide plate, and the inclination angle of the second guide plate is smaller than that of the third guide plate. The interior of the basin is also equipped with a separation mechanism to assist in the initial separation of amniotic fluid and blood. The separation mechanism includes a separation block that can reciprocate at the outlet of the trapezoidal guide channel, and the separation block is cone-shaped.

[0008] Preferably, one end of the third guide plate is provided with a collection chamber for collecting the separated amniotic fluid, and a collection box for collecting blood is provided directly below the third guide plate. A scale for displaying the collection volume is provided on one side of the collection chamber and the collection box. An observation port is provided at the bottom of the basin, and medical personnel can observe the amount of amniotic fluid and blood collected inside the collection chamber and the collection box through the observation port.

[0009] Preferably, the separation mechanism further includes a micro motor fixedly connected to the basin body, the output end of the micro motor being fixedly connected to a transmission rod, the transmission rod having a spiral groove on its surface, and a sliding column being slidably connected inside the spiral groove, one end of the sliding column being fixedly connected to a sliding sleeve, the sliding sleeve being fixedly connected to the separation block, and a sealing gasket being provided at the sliding position between the sliding sleeve and the surface of the transmission rod.

[0010] Preferably, a cooperating mechanism for assisting blood collection is provided below the third guide plate. The cooperating mechanism includes a drive motor fixedly connected to the basin body, a screw fixedly connected to the output end of the drive motor, a trapezoidal rod threadedly connected to the surface of the screw, a baffle slidingly contacting the inclined surface of the trapezoidal rod, and the trapezoidal rod being slidably connected to the basin body.

[0011] Preferably, the separation mechanism further includes a movable rod fixedly connected to the separation block. One end of the movable rod slidably contacts a concave plate, and a mating rod is fixedly connected below the concave plate. The mating rod is rotatably connected to the second guide plate, and coil springs for resetting are provided between the two ends of the mating rod and the basin. Multiple stop rods are fixedly connected below the mating rod.

[0012] Preferably, a wedge block is fixedly connected to the lower part of the moving rod. The lower part of the wedge block is wedge-shaped and slides in contact with a push rod. The lower end of the push rod is movably connected to a mating plate located directly above the trapezoidal guide channel. Coil springs are also provided between the two ends of the mating plate and the basin body.

[0013] Preferably, a return spring is provided at the sliding position between the baffle and the third guide plate, a housing for isolation is provided on the outside of the screw, and no flow-cutting hole is provided at the position of the trapezoidal rod on the back of the third guide plate.

[0014] Preferably, the collection chamber and collection box are detachably installed with respect to the basin. The second guide plate is provided with a buffer zone at the end face of the first guide plate. The inclination angle of the trapezoidal guide groove on the surface of the second guide plate is greater than the inclination angle of the section without the trapezoidal guide groove.

[0015] Preferably, the sliding sleeve and the third guide plate are slidably connected, the transmission rod and the basin are rotatably connected, and there is a height difference between the first guide plate and the second guide plate, and between the second guide plate and the third guide plate.

[0016] Preferably, there is a gap between the multiple stops provided on the surface of the mating rod, and the stops are made of non-stick rubber material.

[0017] This invention provides a dynamic measurement device for postpartum hemorrhage. It has the following beneficial effects: This invention guides amniotic fluid and blood using a first, second, and third guide plate with different tilt angles. Simultaneously, a separation mechanism and a cooperating mechanism assist in separating the guided amniotic fluid and blood, allowing for precise measurement of blood loss during and after childbirth. The separated amniotic fluid and blood are collected separately for subsequent testing and utilization, improving the comprehensiveness of data during childbirth. Furthermore, medical personnel can effectively ensure the mother's safety by observing and assessing blood loss in real time. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the separation mechanism of the present invention; Figure 4 This is a schematic diagram of the sliding column and sliding sleeve of the present invention; Figure 5 This is a schematic diagram of the mechanism of the present invention; Figure 6 This is a schematic diagram of the cooperation between the separation block and the trapezoidal guide channel of the present invention. Figure 7 This is a schematic diagram of the concave plate and the mating plate of the present invention; Figure 8 This is a side view schematic diagram of the present invention; Figure 9 This is a motion diagram of the separation mechanism of the present invention; Figure 10 This is a cross-sectional view of the transmission rod and sliding column of the present invention.

[0019] The components are as follows: 1. Basin; 2. Observation port; 3. Separation mechanism; 301. Miniature motor; 302. Transmission rod; 303. Sliding sleeve; 304. Separation block; 305. Sliding column; 306. Moving rod; 307. Concave plate; 308. Matching rod; 309. Stop rod; 310. Wedge block; 311. Push rod; 312. Matching plate; 313. Coil spring; 4. Matching mechanism; 401. Drive motor; 402. Screw; 403. Trapezoidal rod; 404. Baffle; 5. First guide plate; 6. Second guide plate; 7. Third guide plate; 8. Collection chamber; 9. Scale; 10. Collection box; 11. Trapezoidal guide channel; 12. Arc-shaped guide channel; 13. Cut-off hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 4 As shown, a dynamic measurement device for postpartum hemorrhage includes a basin 1. Inside the basin 1, a first guide plate 5, a second guide plate 6, and a third guide plate 7 are respectively inclined from top to bottom. The second guide plate 6 has a trapezoidal guide channel 11 for preliminary separation of amniotic fluid and blood. The third guide plate 7 has an arc-shaped guide channel 12 for further separation of amniotic fluid and blood. The arc-shaped guide channel 12 has a flow-stopping hole 13. The inclination angle of the first guide plate 5 is smaller than that of the second guide plate 6, and the inclination angle of the second guide plate 6 is smaller than that of the third guide plate 7. The interior of the pelvis 1 is also equipped with a separation mechanism 3 for assisting in the initial separation of amniotic fluid and blood. The separation mechanism 3 includes a separation block 304 that can reciprocate at the outlet of the trapezoidal guide channel 11. The separation block 304 is cone-shaped.

[0022] Please see Figures 1 to 4As shown, to ensure that the collected blood accurately reflects the amount of postpartum bleeding and avoid misjudgment by medical staff, a first guide plate 5, a second guide plate 6, and a third guide plate 7 are respectively installed from top to bottom inside the pelvic body 1. When the mixture of blood and amniotic fluid flows into the pelvic body 1, the mixture flows from the surface of the inclined first guide plate 5 to the surface of the second guide plate 6, and then from the position on the surface of the second guide plate 6 where the trapezoidal guide groove 11 is not opened to the position of the third guide plate 7. Since the amount of amniotic fluid is greater than the amount of blood in the early stages of labor, and the fluidity of amniotic fluid is higher than that of blood, it flows from the surface of the first guide plate 5 to the second guide plate. Amniotic fluid on the surface of the second guide plate 6 may carry a small amount of blood with it, making it difficult to separate the amniotic fluid and blood effectively. Therefore, by opening a trapezoidal guide groove 11 on the surface of the second guide plate 6, and setting the outlet of the trapezoidal guide groove 11 in a trapezoidal shape, when the mixed liquid slides inside the trapezoidal guide groove 11 on the surface of the second guide plate 6, it will be squeezed and sheared by the trapezoidal guide groove 11 whose width is constantly decreasing. The highly fluid amniotic fluid will flow out from the inside of the trapezoidal guide groove 11 first, while the less fluid blood will flow out from the inside of the trapezoidal guide groove 11 later, thereby achieving preliminary separation between blood and amniotic fluid and preventing a large amount of amniotic fluid from carrying blood and flowing synchronously. Please see Figure 2 and Figure 3 As shown, because the second guide plate 6 is inclined, the amniotic fluid and blood flow towards the outlet of the trapezoidal guide channel 11 in an accelerated state. Therefore, the trapezoidal guide channel 11 will better rub and squeeze the amniotic fluid and blood, further improving the initial separation effect. In addition, by setting a cone-shaped separation block 304 at the outlet of the trapezoidal guide channel 11, when the amniotic fluid and blood flow out in an accelerated state, they will impact the surface of the reciprocating separation block 304, and the amniotic fluid and blood will be further separated. This avoids a large amount of amniotic fluid carrying a small amount of blood being collected, which would cause a deviation in the overall blood collection volume and affect the accuracy of medical staff's judgment of the amount of bleeding. Please continue reading. Figure 2 and Figure 3After initial separation, the blood and amniotic fluid flow from the second guide plate 6 to the surface of the third guide plate 7, and then into the multiple arc-shaped guide channels 12 inside the third guide plate 7. Because the amniotic fluid and blood have already undergone initial separation, and the amniotic fluid has a higher fluidity than the blood, the amniotic fluid, which has a higher fluidity, flows at an accelerated rate inside the arc-shaped guide channels 12, while the blood flows slowly on the inner wall of the arc-shaped guide channels 12. To prevent some amniotic fluid from carrying blood and flowing synchronously, the arc-shaped guide channels 12 are designed to prevent further separation. Several sets of intercepting holes 13 are opened inside the 2, and the arc-shaped guide channel 12 is set in an arc shape. When the amniotic fluid carrying blood continues to flow inside the arc-shaped guide channel 12, it will further separate a small amount of amniotic fluid and blood by constantly contacting and colliding with the arc-shaped inner wall of the arc-shaped guide channel 12. When the separated blood slides on the inner wall of the arc-shaped guide channel 12, it will fall into the interior of the intercepting hole 13. At this time, the intercepting hole 13 will intercept the blood, so that the amniotic fluid will continue to flow, thereby further improving the separation effect of amniotic fluid and blood. Please see Figure 2 It should be explained that because the tilt angle of the first guide plate 5 is smaller than that of the second guide plate 6, and the tilt angle of the second guide plate 6 is smaller than that of the third guide plate 7, when the mixture of amniotic fluid and blood falls onto the surface of the first guide plate 5, splashing can be avoided. After the second guide plate 6 initially separates the amniotic fluid and blood, when they enter the arc-shaped guide groove 12 inside the third guide plate 7, they will be separated again in a phased acceleration state, effectively allowing the blood to be collected in a concentrated manner. This not only measures the amount of bleeding after delivery but also measures the amount of bleeding during the delivery process, ensuring the integrity of the bleeding measurement data.

[0023] Please see Figure 1 and Figure 2 As shown, a collection chamber 8 for collecting separated amniotic fluid is provided at one end of the third guide plate 7, and a collection box 10 for collecting blood is provided directly below the third guide plate 7. A scale 9 for displaying the collection volume is provided on one side of the collection chamber 8 and the collection box 10. An observation port 2 is provided at the bottom of the basin 1, and medical staff can observe the amount of amniotic fluid and blood collected inside the collection chamber 8 and the collection box 10 through the observation port 2.

[0024] Please see Figure 1 and Figure 2 As shown, when amniotic fluid and blood pass through the arc-shaped guide groove 12 and the intercepting hole 13 on the surface of the second guide plate 6, the highly fluid amniotic fluid will flow into the collection chamber 8 for collection, while some blood will slowly flow on the inner wall of the arc-shaped guide groove 12, and the other part of the blood will be intercepted by the intercepting hole 13 and stay inside the intercepting hole 13, so that it can be discharged into the collection box 10 for collection later. After the collection chamber 8 and collection box 10 have completed the collection of amniotic fluid and blood respectively, medical staff can observe the values ​​displayed on the scale 9 on one side of the collection chamber 8 and collection box 10 through the observation port 2, thereby observing the amount of amniotic fluid and blood collected. This will not only accurately obtain the amount of bleeding during and immediately after childbirth, but also the amount of amniotic fluid during childbirth, ensuring accurate blood loss measurement data while obtaining data on various types of childbirth, thus ensuring the safety of childbirth.

[0025] Please see Figures 3 to 6 As shown, the separation mechanism 3 also includes a micro motor 301 fixedly connected to the basin 1. The output end of the micro motor 301 is fixedly connected to a transmission rod 302. A spiral groove is opened on the surface of the transmission rod 302, and a sliding column 305 is slidably connected inside the spiral groove. A sliding sleeve 303 is fixedly connected to one end of the sliding column 305. The sliding sleeve 303 is fixedly connected to the separation block 304. A sealing gasket is provided at the sliding position between the sliding sleeve 303 and the surface of the transmission rod 302.

[0026] Please see Figures 3 to 6 To ensure thorough separation of amniotic fluid and blood and improve the accuracy of blood loss measurement, after the amniotic fluid and blood mixture flows from the trapezoidal guide groove 11 on the surface of the second guide plate 6 and undergoes initial separation, the micro motor 301 is activated to drive the transmission rod 302 to rotate. The rotation of the transmission rod 302, through the spiral groove on its surface, causes the sliding sleeve 303, fixedly connected to one end of the sliding column 305, to slide back and forth on the surface of the transmission rod 302. The reciprocating motion of the sliding sleeve 303 causes the separation block 304 to move back and forth at the trapezoidal outlet position of the trapezoidal guide groove 11. The sliding column 305 and the transmission rod 302 cooperate as follows... Figure 10 As shown; When amniotic fluid carrying blood flows at an accelerated rate through the trapezoidal guide channel 11 inside the second guide plate 6, it comes into contact with the separating block 304, generating a certain impact force that causes the amniotic fluid and blood to separate again. Because the separating block 304 is in reciprocating motion, as it moves to the trapezoidal outlet position of the guide channel 11, it constantly changes between a fully open and a partially open state. Therefore, the amniotic fluid and blood flowing inside the guide channel 11 are continuously separated by this reciprocating motion after exiting the channel. The impact of block 304 further enhances the separation of amniotic fluid and blood. To prevent amniotic fluid and blood from entering the interior of sliding sleeve 303 and affecting the spiral grooves on the surfaces of sliding column 305 and transmission rod 302, a sealing gasket is provided at the sliding position of sliding sleeve 303 and transmission rod 302. This not only protects the sliding sleeve 303 but also cleans the blood and amniotic fluid adhering to the surface of transmission rod 302 to a certain extent, achieving a self-cleaning effect, as the sealing gasket moves back and forth with sliding sleeve 303.

[0027] Please see Figure 5 As shown, a cooperating mechanism 4 for assisting blood collection is provided below the third guide plate 7. The cooperating mechanism 4 includes a drive motor 401 fixedly connected to the basin 1, a screw 402 fixedly connected to the output end of the drive motor 401, a trapezoidal rod 403 threadedly connected to the surface of the screw 402, a baffle 404 slidingly contacting the inclined surface of the trapezoidal rod 403, and the trapezoidal rod 403 is slidably connected to the basin 1.

[0028] Please see Figure 1 and Figure 5 As shown, after the amniotic fluid and blood are separated and the amniotic fluid is no longer being discharged, the discharged mixture contains a large amount of blood. Therefore, collecting and measuring only the discharged blood at this time can reflect the amount of bleeding during childbirth and in the early postpartum period. At this time, the drive motor 401 is started to drive the screw 402 to rotate. The rotation of the screw 402 will drive the trapezoidal rod 403 to slide inside the drive motor 401 through the thread. The sliding of the trapezoidal rod 403 will push the baffle 404 to slide on the back of the third guide plate 7 through the inclined surface, so that the baffle 404 will no longer block the interception hole 13. At this time, the blood intercepted by the interception hole 13 will fall from the surface of the baffle 404 down into the collection box 10 for collection. The blood that continues to flow from the first guide plate 5 and the second guide plate 6 will continue to fall from the interception hole 13 into the collection box 10 for collection. This will fully measure the amount of bleeding of the mother and ensure the integrity of the measurement data. Please continue reading. Figure 5As shown, by setting a cylindrical block with a diameter larger than that of the intercepting hole 13 directly below the arc-shaped guide channel 12, the baffle 404 will block the blood intercepted by the intercepting hole 13 through the block. After the amniotic fluid is discharged, the blood can be directly guided from the intercepting hole 13 to the inside of the collection box 10 for collection. By setting a sealing gasket at the position where the block contacts the back of the third guide plate 7, not only will the problem of leakage of the intercepted blood be avoided, but also when the blood flows from the intercepting hole 13 into the collection box 10, the blood will not be unable to be discharged effectively, thus further improving the accuracy of blood collection and measurement.

[0029] Furthermore, the separation mechanism 3 also includes a movable rod 306 fixedly connected to the separation block 304. One end of the movable rod 306 is in sliding contact with a concave plate 307. A mating rod 308 is fixedly connected below the concave plate 307. The mating rod 308 is rotatably connected to the second guide plate 6. Coil springs 313 for resetting are provided between the two ends of the mating rod 308 and the basin 1. Multiple stop rods 309 are fixedly connected below the mating rod 308.

[0030] Please see Figure 6 and Figure 7 As shown, during childbirth, the amniotic fluid and blood that fall onto the surface of the first guide plate 5 have a relatively high viscosity. Therefore, to prevent the amniotic fluid and blood from failing to achieve initial separation or having reduced separation effect when flowing through the trapezoidal guide groove 11 inside the second guide plate 6, the reciprocating separation block 304 drives the moving rod 306 to move synchronously. The moving rod 306 will contact the side of the concave plate 307. Since the side of the concave plate 307 that contacts the moving rod 306 is symmetrically inclined, when the moving rod 306 moves and contacts the inclined surface of the concave plate 307, it will drive the cooperating rod 308 below the concave plate 307. The second guide plate 6 rotates and swings above it. At this time, the rotating and swinging of the connecting rod 308 will drive the baffle 309 to swing back and forth inside the trapezoidal guide channel 11, thereby pre-separating the amniotic fluid and blood that have just entered the trapezoidal guide channel 11. At this time, the swinging of the baffle 309 will beat and disperse the amniotic fluid and the blood it carries. When the dispersed amniotic fluid and blood flow to the trapezoidal position of the trapezoidal guide channel 11, they will not only be better squeezed, but also will not be blocked after squeezing. They will contact the separation block 304 with a relatively stable impact force and be beaten and dispersed again by the separation block 304, further improving the effect of separating amniotic fluid and blood. Please continue reading. Figure 6 and Figure 7As shown, when the cooperating rod 308 drives multiple baffles 309 to beat the amniotic fluid and blood inside the trapezoidal guide groove 11, in order to ensure that the inclined surface on one side of the concave plate 307 is always in contact with one end of the moving rod 306, and thus continuously beat and disperse the flowing amniotic fluid and blood, coil springs 313 that can be reset are provided on both sides of the cooperating rod 308 to improve the separation effect of amniotic fluid and blood.

[0031] Please see Figures 6 to 10 As shown, a wedge block 310 is fixedly connected to the lower part of the moving rod 306. The lower part of the wedge block 310 is wedge-shaped, and a push rod 311 is slidably contacted below the wedge block 310. The lower end of the push rod 311 is movably connected to a mating plate 312 located directly above the trapezoidal guide channel 11. Coil springs 313 are also provided between the two ends of the mating plate 312 and the basin 1.

[0032] Please see Figures 6 to 10 As shown, although multiple baffles 309 can pre-separate amniotic fluid and blood to improve the separation effect when the amniotic fluid and blood move in the trapezoidal part inside the trapezoidal guide channel 11, in order to avoid the blood clots in the blood splashing when the baffles 309 swing towards the position of the mating plate 312, a wedge block 310 similar to the inclined surface of one side of the concave plate 307 is set below the moving rod 306. When the moving rod 306 moves back and forth, it will push the multiple mating plates 312 to swing directly above the trapezoidal guide channel 11 through the inclined surface of the wedge block 310. When the baffles 309 push the amniotic fluid and blood towards the position of the mating plate 312 to separate them, the push rod 311 above the mating plate 312 does not apply downward squeezing force to it. At this time, the mating plate 312 is in a tilted state under the elastic force of the coil spring 313, which can block the splashing blood clots caused by the swing of the baffles 309 and prevent them from splashing.

[0033] When the stop lever 309 is not pushed towards the mating plate 312 to separate amniotic fluid and blood, the push rod 311 will be pushed downward by the inclined surface of the wedge block 310, causing the mating plate 312 to flip downward. The mating plate 312 is positioned directly above the trapezoidal guide channel 11 and at the entry position of the trapezoidal shape of the guide channel 11. Figure 6 As shown, this avoids splashing of blood and amniotic fluid when they first enter the trapezoidal guide channel 11 and come into contact with its sidewalls, allowing the amniotic fluid and blood to flow stably within the trapezoidal shape of the guide channel 11, which facilitates their subsequent separation.

[0034] Please see Figure 4 As shown, a return spring is provided at the sliding position of the baffle 404 and the third guide plate 7, and a housing for isolation is provided on the outside of the screw 402. The trapezoidal rod 403 is located on the back of the third guide plate 7 and no interception hole 13 is provided.

[0035] Please see Figure 4 As shown, when the trapezoidal rod 403 slides inside the basin 1, it pushes the blocking blocks set inside several sets of baffles 404 through the inclined surface to block the interception hole 13, thereby allowing the blood in the amniotic fluid and the subsequent large amount of blood to flow effectively into the collection box 10 for collection, improving the accuracy of the measurement of maternal blood loss, and enabling dynamic measurement of blood loss during the delivery process to ensure the accuracy of blood loss data.

[0036] Furthermore, by setting an outer shell on the outside of the screw 402, the blood collected inside the collection box 10 is isolated, making the inside of the collection box 10 a sterile environment and preventing the collected blood and amniotic fluid from directly contacting the outside world and causing contamination. In order to prevent the blood from contacting the trapezoidal rod 403 and not flowing down the surface of the trapezoidal rod 403, no intercepting hole 13 is opened at the position of the trapezoidal rod 403 on the back of the third guide plate 7, so that the blood cannot contact the trapezoidal rod 403, thereby making the blood better collected and facilitating subsequent measurement.

[0037] Please see Figure 2 and Figure 8 As shown, the collection chamber 8 and collection box 10 are detachably installed with the basin 1. The second guide plate 6 is provided with a buffer zone at the end face of the first guide plate 5. The inclination angle of the trapezoidal guide groove 11 on the surface of the second guide plate 6 is greater than the inclination angle of the un-trapezoidal guide groove 11.

[0038] Please see Figure 2 and Figure 8 As shown, in order to improve the effect of amniotic fluid and blood entering the trapezoidal guide channel 11 inside the second guide plate 6, and thus improve the pre-separation effect of the trapezoidal guide channel 11 and the baffle 309 inside it, a buffer zone is set at the position of the second guide plate 6 at the end face of the first guide plate 5, that is, at the outflow position of the first guide plate 5. When a small amount of amniotic fluid and blood accumulates in the buffer zone, the excess amniotic fluid and blood will flow directly along the trapezoidal guide channel 11. This will prevent the amniotic fluid and blood from staying on the surface of the second guide plate 6 for a period of time after falling from the surface of the first guide plate 5, which would cause the amniotic fluid and blood to flow more slowly inside the trapezoidal guide channel 11, thus further improving the separation effect of amniotic fluid and blood. And as Figure 8 As shown, the inclination angle of the side of the second guide plate 6 with the trapezoidal guide groove 11 is greater than the inclination angle of the side without the trapezoidal guide groove 11. When the amniotic fluid and mixed fluid in the buffer zone enter the interior of the trapezoidal guide groove 11, they will flow in an accelerated state at the trapezoidal position inside the trapezoidal guide groove 11, thereby improving the effect of pre-separation of amniotic fluid and blood.

[0039] Furthermore, the sliding sleeve 303 is slidably connected to the third guide plate 7, the transmission rod 302 is rotatably connected to the basin 1, and there is a height difference between the first guide plate 5 and the second guide plate 6, and between the second guide plate 6 and the third guide plate 7.

[0040] Please see Figure 2 and Figure 3 as well as Figure 8 and Figure 9 As shown, by setting different height differences between the first guide plate 5, the second guide plate 6 and the third guide plate 7, the mixing of amniotic fluid and blood after initial separation, secondary separation and interception separation is avoided, which improves the separation effect of amniotic fluid and blood and enables effective collection of amniotic fluid and blood.

[0041] Furthermore, there are gaps between the multiple stops 309 provided on the surface of the mating rod 308, and the stops 309 are made of non-stick rubber material.

[0042] Please see Figure 7 As shown, by setting multiple sets of baffles 309 with a certain gap between them, when amniotic fluid and blood flow into the trapezoidal guide groove 11 through the baffles 309, it will avoid the situation where the blood cannot flow effectively due to excessive blood volume. Moreover, the baffles are made of non-stick rubber material, which will prevent amniotic fluid and blood from sticking to the surface of the baffles 309 when they come into contact with them, and prevent the gaps between the baffles 309 from becoming blocked after long-term use.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic measurement device for postpartum hemorrhage, comprising a pelvis (1), characterized in that, The basin (1) is provided with a first guide plate (5), a second guide plate (6) and a third guide plate (7) inclined from top to bottom. The second guide plate (6) has a trapezoidal guide groove (11) for preliminary separation of amniotic fluid and blood. The third guide plate (7) has an arc-shaped guide groove (12) for further separation of amniotic fluid and blood. The arc-shaped guide groove (12) has a cut-off hole (13). The inclination angle of the first guide plate (5) is smaller than that of the second guide plate (6), and the inclination angle of the second guide plate (6) is smaller than that of the third guide plate (7). The interior of the basin (1) is also provided with a separation mechanism (3) for assisting in the initial separation of amniotic fluid and blood. The separation mechanism (3) includes a separation block (304) that can reciprocate at the outlet of the trapezoidal guide channel (11). The separation block (304) is cone-shaped.

2. The postpartum hemorrhage dynamic measurement device according to claim 1, characterized in that, One end of the third guide plate (7) is provided with a collection chamber (8) for collecting the separated amniotic fluid. A collection box (10) for collecting blood is provided directly below the third guide plate (7). A scale (9) for displaying the collection volume is provided on one side of the collection chamber (8) and the collection box (10). An observation port (2) is provided below the basin (1), and medical staff can observe the amount of amniotic fluid and blood collected inside the collection chamber (8) and the collection box (10) through the observation port (2).

3. The postpartum hemorrhage dynamic measurement device according to claim 1, characterized in that, The separation mechanism (3) also includes a micro motor (301) fixedly connected to the basin (1). The output end of the micro motor (301) is fixedly connected to a transmission rod (302). The transmission rod (302) has a spiral groove on its surface, and a sliding column (305) is slidably connected inside the spiral groove. A sliding sleeve (303) is fixedly connected to one end of the sliding column (305). The sliding sleeve (303) is fixedly connected to the separation block (304). A sealing gasket is provided at the sliding position between the sliding sleeve (303) and the surface of the transmission rod (302).

4. The postpartum hemorrhage dynamic measurement device according to claim 1, characterized in that, Below the third guide plate (7) is a cooperating mechanism (4) for assisting blood collection. The cooperating mechanism (4) includes a drive motor (401) fixedly connected to the basin (1). The output end of the drive motor (401) is fixedly connected to a screw (402). A trapezoidal rod (403) is threadedly connected to the surface of the screw (402). A baffle (404) slides on the inclined surface of the trapezoidal rod (403). The trapezoidal rod (403) is slidably connected to the basin (1).

5. The postpartum hemorrhage dynamic measurement device according to claim 1, characterized in that, The separation mechanism (3) further includes a movable rod (306) fixedly connected to the separation block (304). One end of the movable rod (306) is slidably in contact with a concave plate (307). A mating rod (308) is fixedly connected below the concave plate (307). The mating rod (308) is rotatably connected to the second guide plate (6). Coil springs (313) for resetting are provided between the two ends of the mating rod (308) and the basin (1). Multiple stop rods (309) are fixedly connected below the mating rod (308).

6. The postpartum hemorrhage dynamic measurement device according to claim 5, characterized in that, A wedge (310) is fixedly connected to the lower part of the moving rod (306). The lower part of the wedge (310) is wedge-shaped, and a push rod (311) is slidably contacted below the wedge (310). The lower end of the push rod (311) is movably connected to a mating plate (312) located directly above the trapezoidal guide channel (11). Coil springs (313) are also provided between the two ends of the mating plate (312) and the basin (1).

7. The postpartum hemorrhage dynamic measurement device according to claim 4, characterized in that, A reset spring is provided at the sliding position of the baffle (404) and the third guide plate (7). A housing for isolation is provided on the outside of the screw (402). The trapezoidal rod (403) is located on the back of the third guide plate (7) and no interception hole (13) is provided.

8. A dynamic measurement device for postpartum hemorrhage volume according to claim 2, characterized in that, The collection chamber (8) and collection box (10) are detachably installed with the basin (1). The second guide plate (6) is provided with a buffer zone at the end face of the first guide plate (5). The inclination angle of the trapezoidal guide groove (11) on the surface of the second guide plate (6) is greater than the inclination angle of the trapezoidal guide groove (11) not being opened.

9. A dynamic measurement device for postpartum hemorrhage volume according to claim 3, characterized in that, The sliding sleeve (303) is slidably connected to the third guide plate (7), the transmission rod (302) is rotatably connected to the basin (1), and there is a height difference between the first guide plate (5) and the second guide plate (6), and between the second guide plate (6) and the third guide plate (7).

10. A dynamic measurement device for postpartum hemorrhage volume according to claim 5, characterized in that, There are gaps between the multiple stops (309) provided on the surface of the mating rod (308), and the stops (309) are made of non-stick rubber material.

Images