A disposable blood loss meter for vaginal delivery

Abstract

This invention provides a disposable blood loss measuring device for vaginal delivery, belonging to the field of obstetrics technology. It addresses the problem of inaccurate and timely measurement of postpartum blood loss in existing technologies. The device includes a blood diversion plate, which is a flexible plate placed under the patient's body; and a measuring box with an opening at the top, located at the tail of the blood diversion plate, with the blood diversion plate extending into the measuring box. The measuring box and the blood diversion plate are detachably connected. This invention achieves convenient and accurate blood loss measurement, ensuring comfort and stability during use.

Description

Technical Field

[0001] This utility model belongs to the field of obstetrics and gynecology, and in particular relates to a disposable blood loss measuring device for vaginal delivery. Background Technology

[0002] The amount of blood loss during vaginal delivery is an important indicator of a woman's postpartum health.

[0003] For mothers who deliver vaginally, blood loss of less than 500 ml within 24 hours after delivery is considered normal; otherwise, it is diagnosed as postpartum hemorrhage. Postpartum hemorrhage has consistently been the leading cause of maternal death, with the time of delivery and the first two hours postpartum being the peak periods for its occurrence. If the amount of blood loss cannot be measured promptly, dynamically, and accurately during delivery, leading to a failure to activate the postpartum hemorrhage warning system in a timely manner and missing the opportunity for rescue, there is a certain probability that the mother will fall into a critical condition.

[0004] In current obstetric clinical practice, bleeding measurement generally uses methods such as visual estimation, weighing, and volumetric measurement. The weighing method involves placing a nursing pad under the patient and measuring the weight of the pad before and after use to detect the amount of bleeding. This method is cumbersome and easily affected by blood penetration and diffusion. The visual estimation method relies on the experience of medical staff and has an error rate as high as 30%-50%. Existing measuring instruments have problems such as complex structure, risk of cross-infection from repeated use, and inaccurate measurement. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a disposable vaginal delivery blood loss meter to solve the problem that the prior art cannot measure the amount of postpartum blood loss in a timely and accurate manner.

[0006] To achieve the above and other related objectives, this utility model provides a disposable vaginal delivery blood loss meter, including a blood diversion plate, wherein the blood diversion plate is a flexible plate and is placed under the patient's body;

[0007] A measuring box with an opening at the top, located at the tail of a blood flow guide plate, the blood flow guide plate extending into the measuring box, and the measuring box and the blood flow guide plate being detachably connected.

[0008] Optionally, the blood flow guide plate is equipped with first retaining rings on both sides of its tail end, and the measuring box is equipped with limiting members on both sides. The first retaining rings are fitted onto the limiting members, and the limiting members connect the blood flow guide plate and the measuring box.

[0009] Optionally, the limiting member is a fixing block, one end of which is installed on the side wall of the measuring box. A limiting groove is formed at the bottom of the fixing block along a direction parallel to the side wall of the measuring box. The limiting groove passes through the front and rear end faces of the fixing block. A first retaining ring is fitted outside the fixing block. The thickness of the first retaining ring is less than the width of the limiting groove. The bottom wall of the first retaining ring is in contact with the top wall of the limiting groove.

[0010] Optionally, the limiting member includes a spring and a clamping plate;

[0011] The clamping plate is rotatably connected to the side wall of the measuring box, the rotation axis of the clamping plate is parallel to the side wall of the measuring box, the upper part of the clamping plate is the clamping end, the clamping end of the clamping plate is equipped with a limit stop, and the limit stop is located between the clamping plate and the measuring box.

[0012] The spring is disposed between the clamping plate and the side wall of the measuring box, and the spring has legs extending from both ends. The legs at both ends of the spring are fixedly connected to the clamping plate and the side wall of the measuring box, respectively.

[0013] The measuring box has grooves on both sides of its sidewalls. The grooves cooperate with the limiting block. The first retaining ring is located between the clamping plate and the measuring box, and the first retaining ring is sleeved on the limiting block. The clamping plate rotates to drive the limiting block through the first retaining ring and into the groove.

[0014] Optionally, the blood flow guide plate is equipped with retaining rings on both sides, and the retaining rings are located above the first retaining ring;

[0015] The retaining ring is cylindrical, and a retaining groove is formed on the circumferential surface of the retaining ring. The width of the retaining groove is greater than the thickness of the first retaining ring, and the first retaining ring is folded upward and hung in the retaining groove.

[0016] Optionally, a number of pads are arrayed along the sides of the bottom of the blood flow guide plate.

[0017] Optionally, the surface of the blood flow guide plate is provided with a plurality of flow guide grooves along the flow direction.

[0018] Optionally, the measuring box is equipped with a lid, and the measuring box and the lid are detachably connected;

[0019] The box cover is equipped with second retaining rings on both sides. The second retaining rings have the same structure as the first retaining rings. The clamping plate drives the limiting block to pass through the second retaining rings and extend into the groove.

[0020] Optionally, the measuring box is equipped with a lid, and the measuring box and the lid are detachably connected;

[0021] Both sides of the box lid are rotatably equipped with fixing buckles. The rotation axis of the fixing buckles is parallel to the side wall of the box lid. The fixing buckles have openings near the side wall of the measuring box, and the openings penetrate the front and rear walls of the fixing buckles. The bottom of the openings has arc-shaped protrusions.

[0022] The retaining buckle is elastic and folds downward so that the retaining block extends into the opening, and the arc-shaped protrusion extends into the limiting groove to fasten it. The bottom end face of the limiting groove is in contact with the bottom end face of the opening.

[0023] Optionally, one end of a connecting rope is fixedly connected to the center of the top of the box lid, and the other end of the connecting rope is connected to the bottom of the measuring box.

[0024] As described above, the disposable vaginal delivery blood loss measuring device of this utility model has at least the following beneficial effects:

[0025] 1. The blood diversion plate and the volumetric box of this utility model are detachably connected, which can realize quick assembly and disassembly, facilitate the operation of medical staff, improve work efficiency, and at the same time, facilitate timely replacement of the volumetric box when there is excessive bleeding. The operation is simple and suitable for the rapid response needs of medical scenarios. The detachable connection between the box lid and the volumetric box makes it easy to close the volumetric box after measurement to prevent blood from splashing or contaminating. At the same time, the blood diversion plate can also be stored in the volumetric box for easy transportation and subsequent processing.

[0026] 2. The blood diversion plate of this utility model is a soft plate, which can better fit the mother's body, avoid discomfort caused by rigid structures, and improve comfort; the diversion groove can guide the blood to flow along a fixed path, prevent diffusion or stagnation, and ensure complete collection of blood loss; the pad at the bottom can support the two sides of the plate, making the two sides of the diversion plate arc-shaped, preventing blood from flowing out of the sides of the diversion plate, ensuring smooth blood flow to the volume box, and improving the accuracy of measurement; the retaining rings on both sides of the diversion plate can be used to fold the first retaining ring upward and put it into the retaining groove on the retaining ring when the volume box needs to be replaced, so that the tail of the blood diversion plate is folded upward and hung up to prevent blood from flowing out. When installing a new volume box, the retaining ring is removed and connected to the limiting parts on both sides of the volume box. The operation is simple and can prevent blood dripping from affecting the blood loss measurement.

[0027] 3. This utility model uses a retaining ring and a limiting groove on the fixing block for easy and quick assembly and disassembly. Simultaneously, the fixing buckle on the lid engages with the fixing block, with an arc-shaped protrusion extending into the limiting groove to ensure a tight fit. Rotating the buckle seals the measuring box without the need for additional tools. The spring and clamp structure utilizes elasticity to automatically clamp the limiting block through the retaining ring and embed it into the fixing groove, ensuring a stable connection. Disassembly is simple; pressing the clamp separates the components. Operation is convenient, allowing medical personnel to install and disassemble the measuring box with one hand, improving work efficiency. Attached Figure Description

[0028] Figure 1The diagram shown is a schematic representation of the overall structure of this utility model.

[0029] Figure 2 The diagram shown is a cross-sectional view of the limiting component of this utility model, which uses a fixing block.

[0030] Figure 3 The diagram shows a limiting component of this utility model using a spring and a clamping plate.

[0031] Figure 4 The diagram shown is a cross-sectional view of the limiting component of this utility model, which uses a spring and a clamping plate.

[0032] Figure 5 The diagram shown is a schematic diagram of the snap ring pendant of this utility model.

[0033] Figure 6 The diagram shows the measuring box and lid of this utility model using springs and clamps.

[0034] Figure 7 The diagram shows how the measuring box and the lid of this utility model are fixed together using a fastener.

[0035] Figure 8 The diagram shows a cross-sectional view of the measuring box and lid of this utility model being fixed together by a fastener.

[0036] Component designation explanation

[0037] Blood diversion plate-1, measuring box-2, first retaining ring-3, fixing block-4, limiting groove-41, clamping plate-5, spring-51, groove-52, limiting stop-53, box cover-6, second retaining ring-7, fixing buckle-8, arc-shaped protrusion-81, opening-82, retaining ring hanger-9, retaining groove-91, pad block-10, diversion groove-11, connecting rope-12. Detailed Implementation

[0038] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0039] Please see Figures 1 to 8It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0040] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0041] Please see Figures 1 to 8 This utility model provides a disposable blood loss measuring device for vaginal delivery, comprising: a blood flow guide plate 1, which is a flexible plate placed under the patient's body. The tail of the blood flow guide plate 1 is arc-shaped, tapering towards the center, to facilitate blood flow into the measuring box 2. The flexible plate material conforms to the shape of the patient's body, avoiding discomfort and facilitating storage and folding; and a measuring box 2 with an opening 82 at the top. The measuring box 2 is made of transparent material, allowing direct observation of the blood loss. The surface of the measuring box 2 has graduations, enabling medical personnel to accurately measure the blood loss and providing a reliable basis for assessing the patient's condition. The measuring box 2 is located at the tail of the blood flow guide plate 1, with the blood flow guide plate 1 extending into the measuring box 2. Blood flows into the measuring box 2 along the guide plate. The measuring box 2 and the blood flow guide plate 1 are detachably connected, facilitating operation by medical personnel. The measuring box 2 can be replaced promptly if excessive bleeding occurs, making operation simple.

[0042] In this embodiment, the blood diversion plate 1 is equipped with first retaining rings 3 on both sides of its tail, and the volumetric cassette 2 is equipped with limiting components on both sides. The first retaining rings 3 are fitted onto the limiting components, and the limiting components connect the blood diversion plate 1 and the volumetric cassette 2, which can achieve rapid assembly and separation, making it convenient for medical staff to use quickly in clinical emergencies and improving operational efficiency.

[0043] In this embodiment, please refer to Figures 1 to 2The limiting component is a fixing block 4. One end of the fixing block 4 is installed on the side wall of the measuring box 2. A limiting groove 41 is formed at the bottom of the fixing block 4 along the direction parallel to the side wall of the measuring box 2. The limiting groove 41 penetrates the front and rear end faces of the fixing block 4. The first retaining ring 3 is sleeved on the outside of the fixing block 4. The thickness of the first retaining ring 3 is less than the width of the limiting groove 41. The bottom wall of the first retaining ring 3 fits against the top wall of the limiting groove 41. The blood guide plate 1 and the measuring box 2 are stably connected by the first retaining ring 3 being locked in the limiting groove 41. The structure is simple and easy to install and disassemble.

[0044] In this embodiment, please refer to Figures 3 to 4 The limiting component includes a spring 51 and a clamping plate 5; the clamping plate 5 is rotatably connected to the side wall of the measuring box 2, and the rotation axis of the clamping plate 5 is parallel to the side wall of the measuring box 2. The upper part of the clamping plate 5 is a clamping end, and a limiting block 53 is installed on the clamping end of the clamping plate 5. The limiting block 53 is located between the clamping plate 5 and the measuring box 2. The lower part of the clamping plate 5 is a pressing end, and its surface is equipped with several anti-slip strips to facilitate pressing the clamping plate 5; the spring 51 is disposed between the clamping plate 5 and the measuring box 2. Between the side walls of the measuring box 2, the spring 51 has legs extending from both ends, which are fixedly connected to the clamping plate 5 and the side wall of the measuring box 2, respectively. Grooves 52 are provided on both side walls of the measuring box 2, and these grooves 52 cooperate with the limiting block 53. The first retaining ring 3 is located between the clamping plate 5 and the measuring box 2, and is fitted over the limiting block 53. The limiting block 53 passes through the first retaining ring 3 and extends into the groove 52. The clamping plate 5 generates a clamping force through the action of the spring 51, limiting the first retaining ring 3 to the limiting block 53 on the clamping plate 5. When connecting the blood diversion plate 1 and the measuring box 2, pressing the clamping plate 5 puts the first retaining ring 3 onto the limiting block 53, then releasing the clamping plate 5 allows the limiting block 53 to insert into the groove 52. To open the box, pressing the clamping plate 5 disengages the limiting block 53 from the groove 52, allowing the first retaining ring 3 to be removed. This operation can be completed by a single medical staff member and is simple to perform.

[0045] In this embodiment, please refer to Figure 5 The blood flow guide plate 1 is equipped with retaining rings 9 on both sides, located above the first retaining ring 3. The retaining rings 9 are columnar, and the surface of the retaining rings 9 has a retaining groove 91 circumferentially opened. The width of the retaining groove 91 is greater than the thickness of the first retaining ring 3. The first retaining ring 3 is folded upward and hung in the retaining groove 91, which makes it convenient to fold the blood flow guide plate 1 upward and hang it in the retaining groove 91 of the retaining ring 9 when changing the volume box 2, so as to prevent blood from flowing out. When installing a new volume box 2, the first retaining ring 3 is removed and connected to the limiting parts on both sides of the volume box 2. The operation is simple and can avoid blood dripping and affecting the blood loss measurement.

[0046] In this embodiment, several pads 10 are arranged along the sides of the bottom of the blood flow guide plate 1 to raise the two sides of the blood flow guide plate 1, so that the two sides of the guide plate are arc-shaped, thus preventing blood from flowing out from the two sides of the guide plate.

[0047] In this embodiment, the surface of the blood flow guide plate 1 is provided with a plurality of flow guide grooves 11 along the flow direction, which guides the blood to flow quickly and smoothly into the volumetric box 2, avoids blood accumulation on the flow guide plate, ensures that the blood can be accurately collected into the volumetric box 2, and improves the accuracy of measurement.

[0048] In this embodiment, please refer to 6. The measuring box 2 is equipped with a lid 6, which is detachably connected to the measuring box 2. This allows for easy sealing of the measuring box 2 after measurement and also enables the blood diversion plate 1 to be stored inside the measuring box 2 to prevent contamination and facilitate transportation and subsequent processing. The lid 6 has two retaining rings, specifically second retaining rings 7, on both sides. The second retaining rings 7 have the same structure as the first retaining rings 3. The clamping plate 5 drives the limiting block 53 to pass through the second retaining rings 7 and extend into the groove 52. The second retaining rings 7 are located between the clamping plate 5 and the measuring box 2, and are fitted over the limiting block 53. The limiting block 53 passes through the second retaining rings 7 and extends into the groove 52. To open the lid 6, press the clamping plate 5 to disengage the limiting block 53 from the groove 52. This can be easily done by a single medical staff member.

[0049] In this embodiment, please refer to Figures 7 to 8 The measuring box 2 is equipped with a lid 6, and the measuring box 2 and the lid 6 are detachably connected. Both sides of the lid 6 are rotatably fitted with fixing buckles 8, the rotation axis of which is parallel to the side wall of the lid 6. Each fixing buckle 8 has an opening 82 near the side wall of the measuring box 2, and the opening 82 penetrates the front and rear walls of the fixing buckle 8. The structure of the fixing buckle 8 after the opening is a U-shaped plate structure, with the opening 82 facing the fixing block 4. The fixing block 4 can be fully inserted into the opening 82. The bottom of the opening 82 is provided with an arc-shaped protrusion 81, which can extend into the limiting groove 41 on the fixing block 4. The fixing buckle 8 is elastic and can be made of a material that can undergo elastic deformation, such as plastic sheet. The fixing buckle 8 is folded downward so that the fixing block 4 extends into the opening 82, and the arc-shaped protrusion 81 extends into the limiting groove 41 to fasten. The bottom end face of the limiting groove 41 is in contact with the bottom end face of the opening 82, so that the fixing buckle 8 can be tightly fastened to the fixing block 4. When fastening the box cover 6 to the measuring box 2, the fixing buckle 8 is folded downward and pressed to make it bend so that the arc-shaped protrusion 81 is fastened into the limiting groove 41. When opening, the fixing buckle 8 can be lifted outward with force. The bottom of the fixing buckle 8 can also be provided with a protrusion for a lever when opening the box cover 6, so that it can be lifted directly with fingers.

[0050] In this embodiment, one end of a connecting rope 12 is fixedly connected to the center of the top of the lid 6, and the other end of the connecting rope 12 is connected to the bottom of the measuring box 2. Connecting the lid 6 to the measuring box 2 with the connecting rope 12 can prevent the lid 6 from being lost and make it convenient to use.

[0051] When using, first lay the blood diversion plate 1 flat under the mother, then insert the first retaining ring 3 at the tail of the blood diversion plate 1 into the limiting groove 41 of the fixing block 4 on both sides of the measuring box 2, and tuck the tail of the blood diversion plate 1 into the measuring box 2. When the bleeding is too heavy and the measuring box 2 needs to be replaced, first remove the first retaining ring 3 on both sides and fold it upwards to hang it in the groove 91 on the retaining ring hanger 9. After taking out the new measuring box 2, remove the first retaining ring 3 and connect it to the measuring box 2, and tuck the tail of the blood diversion plate 1 into the measuring box 2. After the measurement is completed, remove the measuring box 2, fold the blood diversion plate 1 up and put it into the measuring box 2, and close the lid 6 for easy subsequent processing.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A disposable blood loss meter for vaginal delivery, characterized in that, include: A blood diversion plate, wherein the blood diversion plate is a flexible plate, and the blood diversion plate is placed under the patient's body; A measuring box with an opening at the top, located at the tail of a blood flow guide plate, the blood flow guide plate extending into the measuring box, and the measuring box and the blood flow guide plate being detachably connected.

2. The disposable vaginal delivery blood loss meter according to claim 1, characterized in that: The blood flow guide plate is equipped with first retaining rings on both sides of its tail end, and the measuring box is equipped with limiting components on both sides. The first retaining rings are fitted onto the limiting components, and the limiting components connect the blood flow guide plate and the measuring box.

3. A disposable vaginal delivery blood loss measuring device according to claim 2, characterized in that: The limiting component is a fixing block. One end of the fixing block is installed on the side wall of the measuring box. A limiting groove is formed at the bottom of the fixing block along a direction parallel to the side wall of the measuring box. The limiting groove passes through the front and rear end faces of the fixing block. The first retaining ring is sleeved on the outside of the fixing block. The thickness of the first retaining ring is less than the width of the limiting groove. The bottom wall inside the first retaining ring is in contact with the top wall of the limiting groove.

4. A disposable vaginal delivery blood loss measuring device according to claim 2, characterized in that: The limiting component includes a spring and a clamping plate; The clamping plate is rotatably connected to the side wall of the measuring box, the rotation axis of the clamping plate is parallel to the side wall of the measuring box, the upper part of the clamping plate is the clamping end, the clamping end of the clamping plate is equipped with a limit stop, and the limit stop is located between the clamping plate and the measuring box. The spring is disposed between the clamping plate and the side wall of the measuring box, and the spring has legs extending from both ends. The legs at both ends of the spring are fixedly connected to the clamping plate and the side wall of the measuring box, respectively. The measuring box has grooves on both sides of its sidewalls. The grooves cooperate with the limiting block. The first retaining ring is located between the clamping plate and the measuring box, and the first retaining ring is sleeved on the limiting block. The clamping plate rotates to drive the limiting block through the first retaining ring and into the groove.

5. A disposable vaginal delivery blood loss measuring device according to claim 2, characterized in that: Both sides of the blood flow guide plate are equipped with retaining rings, and the retaining rings are located above the first retaining ring. The retaining ring is cylindrical, and a retaining groove is formed on the circumferential surface of the retaining ring. The width of the retaining groove is greater than the thickness of the first retaining ring, and the first retaining ring is folded upward and hung in the retaining groove.

6. A disposable vaginal delivery blood loss measuring device according to claim 1, characterized in that: Several pads are evenly arranged along the sides of the bottom of the blood flow guide plate.

7. A disposable vaginal delivery blood loss meter according to claim 1, characterized in that: The surface of the blood flow guide plate is provided with several flow guide grooves along the flow direction.

8. A disposable vaginal delivery blood loss measuring device according to claim 4, characterized in that: The measuring box is equipped with a lid, and the measuring box and the lid are detachably connected. The box cover is equipped with second retaining rings on both sides. The second retaining rings have the same structure as the first retaining rings. The clamping plate drives the limiting block to pass through the second retaining rings and extend into the groove.

9. A disposable vaginal delivery blood loss measuring device according to claim 3, characterized in that: The measuring box is equipped with a lid, and the measuring box and the lid are detachably connected. Both sides of the box lid are rotatably equipped with fixing buckles. The rotation axis of the fixing buckles is parallel to the side wall of the box lid. The fixing buckles have openings near the side wall of the measuring box, and the openings penetrate the front and rear walls of the fixing buckles. The bottom of the openings has arc-shaped protrusions. The retaining buckle is elastic and folds downward so that the retaining block extends into the opening, and the arc-shaped protrusion extends into the limiting groove to fasten it. The bottom end face of the limiting groove is in contact with the bottom end face of the opening.

10. A disposable vaginal delivery blood loss measuring device according to claim 8, characterized in that: One end of a connecting rope is fixedly connected to the center of the top of the box lid, and the other end of the connecting rope is connected to the bottom of the measuring box.

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