Uterine contraction pressure sensing device

Abstract

The present application provides a uterine contraction pressure sensing device (100), comprising a housing (10), a flexible contact component (20), and a pressure sensing assembly (30); the pressure sensing assembly (30) comprises a pressure sensing element (32), a pressure detection element (33), and a rigid transmission component (31); the pressure sensing element (32) comprises a connecting portion (35) and sensing portions (36); each sensing portion (36) is provided with a first end (361) and a second end (362); the first end (361) is connected to the connecting portion (35), and the second end (362) is secured in an accommodating cavity (13); a count of sensing portions (36) is N, N being a positive integer greater than or equal to 2; the N sensing portions (36) are arranged on a periphery of the connecting portion (35); and if a contour of any one of the N sensing portions (36) is rotated 360 / N degrees around a contact point between the rigid transmission component (31) and the connecting portion (35), the contour will coincide with a contour of another of the N sensing portions (36). Each of the sensing portions (36) has the same geometric conditions, load input conditions, and support conditions, allowing for relatively uniform deformation of the pressure sensing element (32) in all directions, thereby improving the accuracy of uterine contraction pressure measurements.

Description

Uterine contraction pressure probe [Technical Field]

[0001] This application relates to the field of medical device technology, and in particular to a uterine contraction pressure probe. [Background Technology]

[0002] A contraction pressure probe is an accessory to a monitor (such as a fetal / maternal monitor) used to monitor the contraction pressure information of a pregnant woman, enabling medical personnel to assess the woman's condition and take timely appropriate measures. The contraction pressure probe consists of a flexible transmission component and a pressure detection assembly. The pressure detection assembly includes a deformation section, a pressure sensor, and a rigid transmission component. The flexible transmission component is designed to fit snugly against the pregnant woman's skin. The contraction pressure is transmitted to the deformation section through the flexible and rigid transmission components. The pressure sensor detects the deformation generated by the deformation section, thereby obtaining the pregnant woman's contraction pressure information.

[0003] In related technologies, when the same pressure is applied to different positions on the soft transmission component at the same distance from the contact point between the hard transmission component and the deformation part, the deformation of the deformation part may be different, which will cause the uterine contraction pressure information obtained by the pressure sensor to be different, thus resulting in inaccurate measurement of the uterine contraction pressure of pregnant women.

[0004] [Summary of the Invention]

[0005] This application provides a uterine contraction pressure probe that can solve the technical problem of inaccurate uterine contraction pressure measurement.

[0006] To solve the above-mentioned technical problems, the uterine contraction pressure probe provided in this application includes a housing, a flexible contact, and a pressure detection assembly. The housing has a receiving cavity, and the pressure detection assembly is installed in the receiving cavity. The housing has a first through hole, and the flexible contact is disposed at the first through hole and connected to the housing. The pressure detection assembly includes a pressure sensing element, a pressure detection element, and a rigid transmission element. The pressure sensing element includes a connecting part and a sensing part. The sensing part has a first end and a second end. The first end is connected to the connecting part, and the second end is fixed in the receiving cavity. The portion of the sensing part located between the first end and the second end is between the connecting part and the second end. The rigid transmission component has gaps, and its two ends contact the flexible contact component and the connecting part, respectively. The uterine contraction pressure of the pregnant woman is transmitted to the sensing part through the flexible contact component, the rigid transmission component, and the connecting part. The pressure detection component is installed on the sensing part and is used to detect the deformation information generated by the sensing part. The number of sensing parts is N, where N is a positive integer greater than or equal to 2. The N sensing parts are arranged on the outer periphery of the connecting part. If the outline of any one of the N sensing parts is rotated 360 / N degrees around the contact point between the rigid transmission component and the connecting part, it can coincide with the outline of another one of the N sensing parts.

[0007] The uterine contraction pressure probe provided in this application includes a connecting part and a sensing part. The sensing part has a first end and a second end. The first end is connected to the connecting part, and the second end is fixed in the accommodating cavity. The number of sensing parts is at least two, so that the pressure sensing part has at least two deformation areas, which is beneficial to improving the uniformity of deformation of the pressure sensing part under the action of uterine contraction pressure. Furthermore, if the contour of any one of the N sensing parts is rotated 360 / N degrees around the contact point between the rigid transmission member and the connecting part, it can coincide with the contour of another of the N sensing parts, so that the geometric conditions, load input conditions, and support conditions of each sensing part are the same. This is beneficial to the fact that each sensing part can produce the same deformation under the action of uterine contraction pressure, so that the deformation of the pressure sensing part in all directions is relatively uniform. When the same pressure is applied to different positions on the flexible contact member at the same distance from the contact point between the pressure sensing part and the rigid transmission member, the pressure sensing part can produce the same amount of deformation, thereby improving the accuracy of uterine contraction pressure measurement. [Attached Image Description]

[0008] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 is a schematic diagram of the assembly structure of an embodiment of the uterine contraction pressure probe provided in this application;

[0010] Figure 2 is an exploded structural diagram of an embodiment of the uterine contraction pressure probe provided in this application;

[0011] Figure 3 is a cross-sectional structural diagram of an embodiment of the uterine contraction pressure probe provided in this application along a certain viewpoint;

[0012] Figure 4 is a partial cross-sectional view of an embodiment of the uterine contraction pressure probe provided in this application.

[0013] Figure 5 is a structural schematic diagram of an embodiment of the first housing provided in this application;

[0014] Figure 6 is a structural schematic diagram of an embodiment of the flexible contact provided in this application;

[0015] Figure 7 is a cross-sectional structural schematic diagram of an embodiment of the flexible contact provided in this application along a certain viewpoint;

[0016] Figure 8 is a structural schematic diagram of an embodiment of the pressure sensing element provided in this application from a certain perspective;

[0017] Figure 9 is a structural schematic diagram of another embodiment of the pressure sensing element provided in this application from one viewpoint;

[0018] Figure 10 is a structural schematic diagram of another embodiment of the pressure sensing element provided in this application from a certain perspective;

[0019] Figure 11 is a structural schematic diagram of another embodiment of the pressure sensing element provided in this application from a certain perspective;

[0020] Figure 12 is a structural schematic diagram of another embodiment of the pressure sensing element provided in this application from another perspective;

[0021] Figure 13 is a cross-sectional structural schematic diagram of an embodiment of the rigid transmission component provided in this application from a certain perspective;

[0022] Figure 14 is a schematic diagram of an embodiment of the electrocardiogram electrode provided in this application.

Detailed Implementation Methods

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0024] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "first," "second," and "third" in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] This application provides a uterine contraction pressure probe. Referring to Figures 1-4, the uterine contraction pressure probe 100 may include a housing 10, a flexible contact 20, and a pressure detection component 30. The housing 10 can be strapped to the abdomen of a pregnant woman to monitor uterine contraction pressure. The housing 10 has a receiving cavity 13, within which the pressure detection component 30 is installed. The pressure detection component 30 is used to acquire uterine contraction pressure information to assist doctors in assessing the pregnant woman's uterine contraction status.

[0027] Please refer to Figures 2 and 3. The housing 10 includes a first housing 11 and a second housing 12 connected to each other, forming a receiving cavity 13. The first housing 11 is positioned on the side closest to the pregnant woman's skin during use, while the second housing 12 is positioned on the side furthest from the pregnant woman's skin. The second housing 12 can be connected to a strap to secure the uterine contraction pressure probe 100 to the pregnant woman's abdomen. The connection between the first housing 11 and the second housing 12 can be achieved through adhesion, snap-fit, or threaded connection. The housing 10 has a first through hole 112. The shape of the first through hole 112 can be circular, elliptical, polygonal, or other shapes. The shape and size of the flexible contact 20 are adapted to the shape and size of the first through hole 112, and the flexible contact 20 is disposed at the first through hole 112 and connected to the housing 10. The first through hole 112 can be formed in the first housing 11, as shown in Figures 3 and 5. The first housing 11 has a first surface 111 that is close to the skin of the pregnant woman when in use. The first surface 111 has the first through hole 112. The flexible contact member 20 is disposed at the first through hole 112 and connected to the first housing 11.

[0028] The flexible contact 20 has a contact surface 21 for conforming to the skin of a pregnant woman. Specifically, the contact surface 21 is the side of the flexible contact 20 located outside the receiving cavity 13. In related technologies, the flexible contact 20 is provided with an annular groove to allow the flexible contact 20 to meet the deformation required for the test range. However, because the groove forms a depression and its size is small, disinfection of the groove is inconvenient, making the disinfection and cleaning of the uterine contraction pressure probe 100 difficult.

[0029] Please refer to Figures 3 and 4. To solve the aforementioned technical problems, the uterine contraction pressure probe 100 provided in this application has an edge region 22 of the contact surface 21 that is flush with the side of the first surface 111 located outside the receiving cavity 13. The area of ​​the contact surface 21, excluding the edge region 22, protrudes from the first surface 111 towards the external space of the receiving cavity 13. The edge region 22 refers to the outermost region of the flexible contact member 20. When the flexible contact member 20 is circular, the edge region 22 can be an annular region located on the outermost side. Considering the limitations of the manufacturing process, there can be a tolerance of ±0.2mm between the edge region 22 of the contact surface 21 and the side of the first surface 111 located outside the receiving cavity 13. This design eliminates the need for small grooves on the contact surface 21, facilitating disinfection and cleaning of the contact surface 21. The side of the flexible contact member 20 facing away from the contact surface 21 contacts the pressure detection component 30, allowing the uterine contraction pressure of the pregnant woman to be transmitted to the pressure detection component 30 through the flexible contact member 20.

[0030] The portion of the contact surface 21 that protrudes from the first surface 111 toward the external space of the accommodating cavity 13 can be a stepped structure, that is, the contact surface 21 is provided with one or more steps protruding toward the external space of the accommodating cavity 13, so that the flexible contact 20 can adhere to the pregnant woman's skin and transmit uterine contraction pressure. Furthermore, since the stepped structure does not have small grooves, it is convenient to disinfect and clean the contact surface 21.

[0031] In one embodiment, as shown in Figures 3 and 6, the size of the contact surface 21 protruding from the first surface 111 gradually increases from the outer periphery of the flexible contact 20 towards the central region. The portion of the contact surface 21 protruding from the first surface 111 towards the external space of the accommodating cavity 13 is a smooth curved surface structure. By setting the contact surface 21 to a smooth curved surface structure, compared to a stepped structure, the smooth curved surface structure allows the flexible contact 20 to fit closely and comfortably against the pregnant woman's skin, preventing pressure injuries caused by repeated pressure or friction from the stepped edges during prolonged monitoring, thereby improving the user experience.

[0032] In one embodiment, the maximum size of the contact surface 21 protruding from the first surface 111 into the external space of the accommodating cavity 13, excluding the edge region 22, ranges from 0.5 to 2 mm. Experiments have shown that if the maximum size of the contact surface 21 protruding from the first surface 111 is less than 0.5 mm, the protrusion is small, making it difficult for the contact surface 21 to contact the pregnant woman's abdomen or resulting in a small contact area when the shell 10 is bound to the pregnant woman's abdomen, thus reducing the accuracy of uterine contraction pressure measurement. If the maximum size of the contact surface 21 protruding from the first surface 111 is greater than 2 mm, the protrusion is large, resulting in a large contact area between the contact surface 21 and the pregnant woman when the shell 10 is bound to the pregnant woman's abdomen. Since the pregnant woman's skin is thinner and tighter than that of an average person, an excessively large protrusion can easily cause pressure damage to the pregnant woman's skin from the flexible contact element 20. For example, the maximum size of the area of ​​the contact surface 21, excluding the edge region 22, protruding from the first surface 111 to the external space of the accommodating cavity 13 is 0.5mm, 1.0mm, 1.5mm or 2.0mm, etc., and is not specifically limited here.

[0033] The flexible contact 20 can be made of soft materials such as TPE (Thermoplastic Elastomer), TPU (Thermoplastic Urethane), or TPR (Thermoplastic Rubber) to prevent pressure damage to the pregnant woman's skin from prolonged contact. The flexible contact 20 can also be made of silicone. Silicone has good ductility, weather resistance, and resistance to disinfectants. Due to its excellent ductility, the required deformation for the testing range can be achieved directly through the material's stretching.

[0034] In one embodiment, as shown in Figures 3, 6, and 7, the thickness of all or part of the outer peripheral region 23 of the flexible contact 20 within the first through-hole 112 is less than the thickness of the central region 24 of the flexible contact 20. The outer peripheral region 23 of the flexible contact 20 is the region where the flexible contact 20 deforms under uterine contraction pressure. The outer peripheral region 23 of the flexible contact 20 within the first through-hole 112 may be adjacent to the edge region 22 of the contact surface 21 and closer to the central region 24 than the edge region 22; the outer peripheral region 23 of the flexible contact 20 within the first through-hole 112 may also include the edge region 22, or the outer peripheral region 23 may be a part of the edge region 22. For example, when the flexible contact 20 is embedded in a portion of the first housing 11 at the first through hole 112, i.e., the flexible contact 20 is clamped on both sides of the first housing 11 at the first through hole 112, the outer peripheral region 23 is adjacent to the edge region 22 of the contact surface 21 and is closer to the central region 24 than the edge region 22. Alternatively, when the outer wall of the flexible contact 20 is attached to the inner wall of the first through hole 112 and fixedly connected to the first housing 11, the outer peripheral region 23 may include the edge region 22, or the outer peripheral region 23 may be a part of the edge region 22. Setting the thickness of the outer peripheral region 23 of the flexible contact 20 to be less than the thickness of the central region 24 can reduce the bending stiffness of the area where the flexible contact 20 deforms under uterine contraction pressure, making it easier for the flexible contact 20 to meet the deformation requirements of the test range.

[0035] Referring to Figures 2, 3, and 7, in one embodiment, the pressure detection assembly 30 includes a rigid transmission member 31. A flexible contact member 20, with its side facing away from the contact surface 21, contacts the rigid transmission member 31. The uterine contraction pressure of the pregnant woman is transmitted through the flexible contact member 20 and the rigid transmission member 31. The side of the flexible contact member 20 facing away from the contact surface 21 is provided with a receiving groove 25 and an annular groove 26. A portion of the rigid transmission member 31 is accommodated within the receiving groove 25. The shape of the receiving groove 25 matches the shape of one end of the rigid transmission member 31, allowing the flexible contact member 20 to wrap around the outer periphery of one end of the rigid transmission member 31. The groove wall of the receiving groove 25 can laterally limit the rigid transmission member 31, preventing lateral displacement and improving the detection accuracy of the pressure detection assembly 30. Furthermore, when the rigid transmission component 31 is connected to the flexible contact component 20 by adhesive bonding, the receiving groove 25 can also prevent adhesive from overflowing into the outer peripheral area 23 of the flexible contact component 20 during bonding. If adhesive overflows into the annular groove 26, it will affect the deformation consistency of the flexible contact component 20, thereby affecting the measurement accuracy. The annular groove 26 is provided around the rigid transmission component 31, and the thickness of the area of ​​the flexible contact component 20 where the annular groove 26 is located is less than the thickness of the central area 24. The flexible contact component 20 has the annular groove 26 located on the outer periphery of the rigid transmission component 31, and the thickness of the area of ​​the flexible contact component 20 where the annular groove 26 is located is less than the thickness of the central area 24. This can reduce the bending stiffness of the area of ​​the flexible contact component 20 that deforms under uterine contraction pressure, making it easier for the flexible contact component 20 to meet the deformation requirements of the test range.

[0036] The outer wall of the flexible contact 20 can be attached to the inner wall of the first through hole 112 to fix the flexible contact 20 to the first housing 11. To ensure a reliable connection between the flexible contact 20 and the first housing 11, a certain contact area is required between the outer wall of the flexible contact 20 and the inner wall of the first through hole 112. That is, the height of the first through hole 112 must meet the connection strength requirements. Correspondingly, the dimension of the first housing 11 in the extension direction of the first through hole 112 is greater than a preset value. In one embodiment, as shown in Figures 4 and 5, the first housing 11 has an annular notch 113 on the side of the first through hole 112 away from the receiving cavity 13. The flexible contact 20 is connected to the annular notch 113, and all or part of the outer edge of the flexible contact 20 is embedded in the annular notch 113. By creating an annular notch 113 at the first through hole 112, and embedding all or part of the outer edge of the flexible contact 20 into the annular notch 113, on the one hand, the contact area at the connection between the flexible contact 20 and the first housing 11 can be increased, thereby improving the reliability of the connection between the flexible contact 20 and the first housing 11; on the other hand, by setting the annular notch 113, the connection between the first housing 11 and the flexible contact 20 has a certain size in the extension direction perpendicular to the first through hole 112, and the connection between the flexible contact 20 and the first housing 11 does not depend on the contact area between the outer wall of the flexible contact 20 and the inner wall of the first through hole 112, thereby reducing the size of the first housing 11 in the extension direction of the first through hole 112, thereby reducing the size of the uterine contraction pressure probe 100.

[0037] The flexible contact 20 may have its outer wall and the side facing away from the contact surface 21 attached to the annular notch 113 of the first housing 11, thereby connecting the flexible contact 20 to the first housing 11. In one embodiment, as shown in Figures 4 and 7, a groove 27 is formed along the outer periphery of the outer edge of the flexible contact 20, and the portion of the first housing 11 with the annular notch 113 is engaged in the groove 27. This arrangement allows the flexible contact 20 to be clamped on both sides of the portion of the first housing 11 with the annular notch 113. In addition to the outer wall of the flexible contact 20 being attached to the first housing 11, the flexible contact 20 and the first housing 11 are in contact on both sides, which can increase the contact area at the connection between the flexible contact 20 and the first housing 11, thereby improving the reliability of the connection between the flexible contact 20 and the first housing 11.

[0038] Please refer to Figures 4 and 7. In one embodiment, the size of the side of the flexible contact 20 located inside the accommodating cavity 13 is larger than the size of the other side of the flexible contact 20 located outside the accommodating cavity 13, thereby further increasing the contact area at the connection between the flexible contact 20 and the first housing 11, which can improve the reliability of the connection between the flexible contact 20 and the first housing 11.

[0039] In one embodiment, as shown in FIG5, the first housing 11 has a connecting hole 114 at the annular notch 113. A portion of the flexible contact 20 is embedded in the connecting hole 114, so that the flexible contact 20 and the first housing 11 form an "engaging" connection, and the connection between the flexible contact 20 and the first housing 11 is more secure.

[0040] The connection between the flexible contact 20 and the first housing 11 can be achieved by adhesive bonding or snap-fitting, so that the flexible contact 20 is fixedly connected to the first housing 11. In one embodiment, the flexible contact 20 and the first housing 11 are integrally molded using an injection molding process. Integrating the flexible contact 20 and the first housing 11 into one piece enhances the adhesion between the flexible contact 20 and the first housing 11, thereby improving the reliability of the connection between the flexible contact 20 and the first housing 11.

[0041] Please refer to Figures 2 and 3. The pressure detection component 30 includes a rigid transmission component 31, a pressure sensing component 32, and a pressure detection component 33. The pressure sensing component 32 is fixedly installed in the accommodating cavity 13. The uterine contraction pressure of the pregnant woman is transmitted to the pressure sensing component 32 through the flexible contact component 20 and the rigid transmission component 31. The pressure detection component 33 is installed on the pressure sensing component 32 and is used to obtain uterine contraction pressure information.

[0042] In related technologies, the pressure detection element 33 obtains uterine contraction pressure information by detecting the deformation of the deformation area of ​​the pressure sensing element 32. When the same pressure is applied to different positions on the flexible contact element 20 at the same distance from the contact point between the pressure sensing element 32 and the rigid transmission element 31, the amount of deformation generated by the deformation area of ​​the pressure sensing element 32 may be different, resulting in inaccurate measurement of uterine contraction pressure.

[0043] Please refer to Figures 3 and 8-10. To solve the above-mentioned technical problems, the uterine contraction pressure probe 100 provided in this application includes a pressure sensing element 32 comprising a connecting portion 35 and a sensing portion 36. The sensing portion 36 can deform under the action of uterine contraction pressure, facilitating the acquisition of uterine contraction pressure information by detecting the amount of deformation of the sensing portion 36. The sensing portion 36 has a first end 361 and a second end 362. The first end 361 is connected to the connecting portion 35, and the second end 362 is fixed within the accommodating cavity 13. The first end 361 is used to transmit the uterine contraction pressure from the connecting portion 35 to the deformation area of ​​the sensing portion 36, and the second end 362 forms a support point for the sensing portion 36. A gap exists between the portion of the sensing portion 36 located between the first end 361 and the second end 362 and the connecting portion 35, ensuring that the portion of the sensing portion 36 other than the first end 361 does not contact the connecting portion 35, allowing the sensing portion 36 to deform freely. The two ends of the rigid transmission member 31 contact the flexible contact member 20 and the connecting portion 35 respectively to transmit uterine contraction pressure. The uterine contraction pressure of the pregnant woman is transmitted to the sensing part 36 via the flexible contact member 20, the rigid transmission member 31, and the connecting part 35, causing the sensing part 36 to deform. A pressure detection member 33 is mounted on the sensing part 36 and is used to detect the deformation information generated by the sensing part 36, thereby obtaining uterine contraction pressure information. The pressure detection member 33 can be a resistance strain gauge (resistance strain plate), and it can be bonded to the sensing part 36.

[0044] The number of sensing elements is N, where N is a positive integer greater than or equal to 2. The number of sensing elements 36 is at least two, ensuring that the pressure sensing element 32 has at least two deformation areas. This prevents the pressure sensing element 32 from being subjected to force on one side and improves the uniformity of deformation of the pressure sensing element 32 under uterine contraction pressure. As shown in Figures 8-10, the number of sensing elements 36 can be two, three, or more. The N sensing elements 36 are arranged around the outer periphery of the connecting part 35. If the outline of any one of the N sensing elements 36 is rotated 360 / N degrees around the contact point between the rigid transmission member 31 and the connecting part 35, it can coincide with the outline of another one of the N sensing elements 36. That is, the shape and size of each sensing element 36 are the same, the first ends 361 of each sensing element 36 are evenly distributed around the outer periphery of the connecting part 35, and the second ends 362 of each sensing element 36 are evenly distributed around the outer periphery of the connecting part 35. All sensing elements 36 have the same shape and size, resulting in identical geometric conditions and facilitating identical deformation under uterine contraction pressure. The first ends 361 of each sensing element 36 are evenly distributed around the outer periphery of the connecting portion 35, and the second ends 362 of each sensing element 36 are also evenly distributed around the outer periphery of the connecting portion 35. "Evenly distributed first ends 361 (or second ends 362) of each sensing element 36 around the outer periphery of the connecting portion 35" means that the distance between the first ends 361 (or second ends 362) of any two adjacent sensing elements 36 along the circumference of the connecting portion 35 is approximately equal; or, the angles formed by the lines connecting the geometric centers of the first ends 361 (or second ends 362) of any two adjacent sensing elements 36 with the geometric center of the connecting portion 35 are approximately equal. Since the first end 361 transmits the uterine contraction pressure from the connecting part 35 to the deformation area of ​​the sensing part 36, and the first ends 361 of each sensing part 36 are evenly distributed on the outer periphery of the connecting part 35, the load input conditions of each sensing part 36 are the same, which is beneficial for each sensing part 36 to produce the same deformation under the action of uterine contraction pressure; and since the second end 362 forms the support point of the sensing part 36, and the second ends 362 of each sensing part 36 are evenly distributed on the outer periphery of the connecting part 35, the support conditions of each sensing part 36 are the same, which is beneficial for each sensing part 36 to produce the same deformation under the action of uterine contraction pressure.

[0045] The uterine contraction pressure probe 100 provided in this application has at least two sensing parts 36, which gives the pressure sensing element 32 at least two deformation regions. This is beneficial to improving the uniformity of deformation of the pressure sensing element 32 under uterine contraction pressure. Furthermore, if the contour of any one of the N sensing parts 36 is rotated 360 / N degrees around the contact point between the rigid transmission member 31 and the connecting part 35, it can coincide with the contour of another of the N sensing parts 36. This makes the geometric conditions, load input conditions, and support conditions of each sensing part 36 the same, which is beneficial to produce the same deformation of each sensing part 36 under uterine contraction pressure. This makes the deformation of the pressure sensing element 32 relatively uniform in all directions. When the same pressure is applied at different positions on the flexible contact member 20 at the same distance from the contact point between the pressure sensing element 32 and the rigid transmission member 31, the pressure sensing element 32 can produce the same amount of deformation, thereby improving the accuracy of uterine contraction pressure measurement.

[0046] The sensing part 36 and the connecting part 35 can be processed separately and then assembled to form the pressure sensing element 32, that is, each component of the pressure sensing element 32 can be a separate structure; the pressure sensing element 32 can also be an integral structure, for example, the sensing part 36 and the connecting part 35 can be integrally formed to form the pressure sensing element 32 by etching or stamping processes on the substrate.

[0047] The pressure sensor 32 can be a thin sheet structure, allowing the sensing part 36 to deform significantly under uterine contraction pressure. For example, a 1 kg force exerted on the flexible contact 20 by uterine contraction pressure can produce a 1 mm deformation in the sensing part 36. The sensing part 36 can be sheet-like. Sheet-like means that within the plane of the sensing part 36, the dimensional difference between the sensing part 36 in two mutually orthogonal directions is not significant. Alternatively, as shown in Figures 8-10, the sensing part 36 can be elongated, with part or all of the sensing part 36 located between the first end 361 and the second end 362 falling outside the line connecting the first end 361 and the second end 362. Elongated means that within the plane of the sensing part 36, the dimension of the sensing part 36 along the extending direction is greater than the dimension perpendicular to the extending direction. For example, the ratio of the dimension of the sensing part 36 along the extension direction to the dimension perpendicular to the extension direction is greater than or equal to 2, making the sensing part 36 relatively slender. Under the pressure of uterine contractions, the sensing part 36 can produce a larger amount of deformation, which is beneficial to improving the sensitivity of uterine contraction pressure measurement. The sensing part 36 is positioned such that a portion or all of it falls outside the line connecting the first end 361 and the second end 362, making the sensing part 36 at least partially curved. Compared to a straight extension, this increases the amount of deformation of the sensing part 36 under the pressure of uterine contractions, further improving the sensitivity of uterine contraction pressure measurement. The sensing part 36 is elongated, and the extension line of the sensing part 36 can be an arc-shaped curve (Figure 8), or a curve with a right angle (Figure 9), an acute angle (Figure 10), or an obtuse angle.

[0048] The shape formed by the combination of the various sensing parts 36 may differ from the shape of the connecting part 35. For example, the connecting part 35 may be in a positive direction, the extension lines of the sensing parts 36 may be arc-shaped, the second ends 362 of each sensing part 36 may extend away from the geometric center of the connecting part 35, and the gap between each sensing part 36 and the connecting part 35 may gradually increase from the first end 361 to the second end 362, so that the shape formed by the combination of the various sensing parts 36 is radial, the sensing parts 36 are relatively slender, and the sensing parts 36 may produce a large amount of deformation under the pressure of uterine contractions.

[0049] In one embodiment, as shown in Figures 8-10, each sensing element 36 is arranged around the connecting portion 35. At the gap between each sensing element 36 and the connecting portion 35, the distance from any point on the outer contour line of the connecting portion 35 to the outer contour line of the sensing element 36 is equal. This arrangement ensures that the gap between each sensing element 36 and the connecting portion 35 is equal from the first end 361 to the second end 362. The outer contour shape of the pattern formed by the combination of the sensing elements 36 can be approximately the same as the outer contour shape of the connecting portion 35. This allows for full utilization of the space around the connecting portion 35, resulting in a more compact structure for the pressure sensor 32 and a reduction in its size. For example, the shape of the connecting portion 35 can be circular, elliptical, or a regular polygon; correspondingly, the shape formed by the combination of the sensing elements 36 is also approximately circular, elliptical, or a regular polygon. Understandably, when there is a corner (which can be a right angle, an obtuse angle or an acute angle) on the outer contour line of the connecting part 35, a chamfer is usually provided at the corner due to the needs of the processing technology. The distance from the chamfer point to the outer contour line of the sensing part 36 may be different from the distance from other points to the outer contour line of the sensing part 36.

[0050] In one embodiment, as shown in FIG8, the outer contour of the connecting portion 35 is circular, and the outer contour of the sensing portion 36 located between the first end 361 and the second end 362 is part or all of the outer contour of a ring, with the center of the ring coinciding with the center of the connecting portion 35. By making the connecting portion 35 circular and the sensing portion 36 ring-shaped, the gap between each sensing portion 36 and the connecting portion 35 can be reduced, making the structure of the pressure sensor 32 more compact and facilitating a reduction in the size of the pressure sensor 32.

[0051] In one embodiment, as shown in Figures 8-10, the distance between the second end 362 of each sensing part 36 and the first end 361 of an adjacent sensing part 36 in the extending direction of each sensing part 36 is less than a preset value. For example, the preset value could be 2mm, 1.5mm, 1.0mm, or 0.5mm, etc. This arrangement minimizes the distance between the ends of two adjacent sensing parts 36 in the extending direction, thereby fully utilizing the space around the connecting part 35 to increase the length of the sensing part 36. This makes the structure of the pressure sensing element 32 more compact and helps to reduce the size of the pressure sensing element 32.

[0052] The second end 362 of the sensing part 36 can be directly fixed in the receiving cavity 13. For example, the second end 362 has a hole, and the second end 362 is fixed in the receiving cavity 13 by a screw inserted into the hole. In one embodiment, as shown in FIG11, the pressure sensing element 32 includes a mounting part 37, which surrounds the outer periphery of each sensing part 36. The second end 362 of each sensing part 36 is connected to the mounting part 37, and the second end 362 is fixed in the receiving cavity 13 by the mounting part 37. The mounting part 37 may be annular, and the geometric center of the mounting part 37, the geometric center of the connecting part 35, and the geometric center of the graphic formed by the combination of each sensing part 36 coincide with each other, making the structure of the pressure sensing element 32 compact and further reducing the size of the pressure sensing element 32. The mounting part 37, the sensing part 36, and the connecting part 35 may be processed separately and then assembled to form the pressure sensing element 32, that is, the various components of the pressure sensing element 32 may be a separate structure. The pressure sensor 32 can also be a one-piece structure, with the mounting part 37, the sensing part 36, and the connecting part 35 integrally formed to create the pressure sensor 32. For example, by using processes such as etching or stamping on the substrate, a portion of the substrate can be hollowed out, thereby obtaining a one-piece pressure sensor 32, giving the pressure sensor 32 good integrity. The second end 362 of each sensing part 36 is connected to the mounting part 37, so that the mounting part 37 and the connecting part 35 are respectively connected to the opposite ends of each sensing part 36, thereby connecting the sensing parts 36 into a single unit. This enhances the integrity of the pressure sensor 32 and facilitates its assembly.

[0053] As mentioned earlier, the number of sensing parts 36 can be two, three, or more. The more sensing parts 36 there are, the more deformation areas the pressure sensor 32 has, and the more uniform the deformation of the pressure sensor 32 will be in all directions. Referring to Figure 12, in one embodiment, the number of sensing parts 36 is two. The outer contours of the two sensing parts 36 are centrally symmetrical about the geometric center of the connecting part 35, or the two sensing parts 36 are connected to the connecting part 35 to form a centrally symmetrical figure. Setting the number of sensing parts 36 to two allows the pressure sensor 32 to have two deformation areas, which can prevent the pressure sensor 32 from being subjected to force on one side and is beneficial to improving the uniformity of deformation of the pressure sensor 32 under the action of uterine contraction pressure; it also allows the number of sensing parts 36 to be relatively small, thereby reducing the processing difficulty of the pressure sensor 32. The outer contours of the two sensing parts 36 are centrally symmetrical about the geometric center of the connecting part 35, or the two sensing parts 36 are connected to the connecting part 35 to form a centrally symmetrical figure, so that the shape of the pressure sensing element 32 is more regular. This not only facilitates the processing of the pressure sensing element 32, but also ensures that the deformation of the pressure sensing element 32 in all directions is relatively uniform, thereby improving the accuracy of uterine contraction pressure measurement.

[0054] The connecting part 35 and the rigid transmission member 31 can be fixedly connected or not, as long as the rigid transmission member 31 can contact the connecting part 35 and transmit the uterine contraction pressure to the connecting part 35. In one embodiment, as shown in FIG3, the pressure detection assembly 30 includes a fixing member 34, which fixes the connecting part 35 and the rigid transmission member 31. The fixing member 34 can be a screw, and holes are provided on the connecting part 35 and the rigid transmission member 31. The fixing member 34 is threadedly connected to the rigid transmission member 31, thereby fixing the connecting part 35 to the rigid transmission member 31. The fixing member 34 can also be glue, double-sided tape, or other adhesive materials, that is, the connecting part 35 can be fixed to the rigid transmission member 31 by glue, double-sided tape, or other adhesive materials. By fixing the connecting part 35 to the rigid transmission member 31 with the fixing member 34, the connecting part 35 and the rigid transmission member 31 always move synchronously, preventing slippage between them after prolonged use and affecting detection accuracy. Furthermore, it prevents the rigid transmission member 31 from deflecting under uterine contraction pressure, thus ensuring the direction and point of application of the uterine contraction pressure transmitted to the connecting part 35. The geometric center of the fixing member 34 in the orthographic projection of the connecting part 35 is located at the geometric center of the connecting part 35. For example, when both the fixing member 34 and the connecting part 35 are circular, the line connecting the center of the fixing member 34 and the center of the connecting part 35 is perpendicular to the connecting part 35. This arrangement ensures that the uterine contraction pressure transmitted from the rigid transmission member 31 acts on the geometric center of the connecting part 35, ensuring that the load input conditions of each sensing part 36 are the same, which is beneficial for each sensing part 36 to produce the same deformation under the action of uterine contraction pressure.

[0055] The pressure sensor 32 can be directly fixedly installed in the accommodating cavity 13, or it can be indirectly fixedly installed in the accommodating cavity 13 through other components. In one embodiment, as shown in Figures 2 and 3, the uterine contraction pressure probe 100 includes a control circuit board 50, and the pressure sensor 32 is indirectly fixedly installed in the accommodating cavity 13 through the control circuit board 50. The control circuit board 50 is used to receive and process deformation information. The control circuit board 50 is fixedly installed in the accommodating cavity 13, the pressure sensor 32 is fixed on the control circuit board 50, and the sensing part 36 and the control circuit board 50 are spaced apart in the direction of action of the rigid transmission member 31, so that the sensing part 36 has a certain deformation space to ensure that the sensing part 36 can deform freely. Exemplarily, the control circuit board 50 may be provided with a fixing post protruding from the control circuit board 50, and the mounting part 37 is fixed on the fixing post, so that the sensing part 36 and the control circuit board 50 are spaced apart in the direction of action of the rigid transmission member 31. The pressure detection element 33 is electrically connected to the control circuit board 50, so that the deformation information can be transmitted to the control circuit board 50. The pressure sensor 32 is indirectly fixedly installed in the accommodating cavity 13 via the control circuit board 50. The control circuit board 50 can be used as a support for the pressure sensor 32, eliminating the need for a separate pressure sensor support and thus reducing the amount of material in the accommodating cavity 13. Furthermore, the pressure sensor 32 is installed on the control circuit board 50, while the pressure detection element 33 is installed on the sensing part 36 of the pressure sensor 32. This allows the pressure detection element 33 to be positioned close to the control circuit board 50, facilitating the electrical connection between the pressure detection element 33 and the control circuit board 50.

[0056] In one embodiment, the control circuit board 50 is provided with an insert hole (not shown in the figure), the mounting part 37 is fixed on the control circuit board 50, and the sensing part 36 corresponds to the position of the insert hole, so that the sensing part 36 deforms toward the insert hole when subjected to pressure, which can make full use of the space of the insert hole and thus reduce the size of the product.

[0057] The pressure detection element 33 can be a single element, which can be selectively mounted on one of the sensing units 36. In one embodiment, pressure detection elements 33 are respectively mounted on at least two sensing units 36, and each pressure detection element 33 is electrically connected to a control circuit board 50. The control circuit board 50 is configured to generate uterine contraction pressure data based on the deformation information acquired by each pressure detection element 33. For example, the average value of the uterine contraction pressure values ​​acquired by each pressure detection element 33 can be used as the uterine contraction pressure data. By setting at least two sensing units 36 to be equipped with pressure detection elements 33, the number of pressure detection elements 33 is at least two, thereby allowing the measurement of deformation information in at least two deformation areas of the pressure sensing element 32. Generating uterine contraction pressure data based on the deformation information acquired by each pressure detection element 33 can improve the accuracy of the uterine contraction pressure data.

[0058] The rigid transmission component 31 and the flexible contact component 20 can be bonded together or connected by pre-embedded injection molding. The rigid transmission component 31 has relatively high rigidity to facilitate the transmission of uterine contraction pressure to the sensing unit 36. For example, the rigid transmission component 31 can be made of metal or a plastic material with high hardness. In one embodiment, the geometric center of the orthographic projection of the rigid transmission component 31 onto the connecting part 35 falls on the geometric center of the contact surface between the connecting part 35 and the rigid transmission component 31. This arrangement ensures that the direction of the uterine contraction pressure is perpendicular to the connecting part 35, and the point of application is located at the geometric center of the contact surface between the connecting part 35 and the rigid transmission component 31. The connecting part 35 can evenly transmit the uterine contraction pressure to each sensing unit 36, thereby ensuring that the load input conditions of each sensing unit 36 ​​are the same, which is beneficial for each sensing unit 36 ​​to produce the same deformation under the action of uterine contraction pressure.

[0059] In one embodiment, the outer contours of the flexible contact 20 and the connecting portion 35 are circular or regular polygonal, making the flexible contact 20 and the connecting portion 35 relatively regular and easy to process. The geometric center of the orthographic projection of the flexible contact 20 onto the connecting portion 35 falls on the geometric center of the surface of the connecting portion 35 that contacts the rigid transmission member 31, so that the uterine contraction pressure received by the flexible contact 20 can act perpendicularly on the connecting portion 35, ensuring that the load input conditions of each sensing part 36 are the same.

[0060] In one embodiment, as shown in FIG13, the rigid transmission member 31 includes a transmission column 311 and a transmission plate 312. One end of the transmission column 311 contacts the connecting portion 35, and the other end of the transmission column 311 is connected to the transmission plate 312. The transmission plate 312 contacts the flexible contact member 20, thereby transmitting uterine contraction pressure to the transmission plate 312. The cross-sectional shape of the transmission plate 312 can be the same as or different from the cross-sectional shape of the transmission column 311. The cross-sectional shapes of the transmission plate 312 and the transmission column 311 can be circular, elliptical, or polygonal. On a reference plane perpendicular to the extension direction of the transmission column 311, the cross-sectional dimension of the transmission plate 312 is larger than that of the transmission column 311. Setting the cross-sectional dimension of the transmission plate 312 to be larger than that of the transmission column 311 allows for a larger contact area between the rigid transmission member 31 and the flexible contact member 20. The flexible contact member 20 can transmit uterine contraction pressure over a larger area of ​​the pregnant woman's abdomen, thereby improving the accuracy of uterine contraction pressure measurement. The ratio of the cross-sectional dimension of one end of the transmission column 311 that contacts the connecting portion 35 to the cross-sectional dimension of the connecting portion 35 is between 0.5 and 1.0. If the ratio is less than 0.5, the cross-sectional dimension of that end is smaller, resulting in a larger area of ​​the connecting portion 35 extending beyond the end of the transmission column 311. This cantilever structure, due to the thinness of the connecting portion 35, will cause significant deformation under uterine contraction pressure, making it difficult to transmit the contraction pressure to the sensing element 36, thus affecting the accuracy of contraction pressure measurement. Conversely, if the ratio is greater than 1.0, the portion of the transmission column 311 that contacts the connecting portion 35 extends beyond the connecting portion 35, affecting the deformation of the sensing element 36 located on the outer periphery of the connecting portion 35, and consequently affecting the accuracy of contraction pressure measurement. In some embodiments, the ratio of the cross-sectional dimension of one end of the transmission column 311 that contacts the connecting portion 35 to the cross-sectional dimension of the connecting portion 35 is 0.5, 0.6, 0.7, 0.8, 0.9 or 1.0, and no specific limitation is made here.

[0061] In related technologies, the uterine contraction pressure probe can only measure the uterine contraction pressure of pregnant women. If it is necessary to measure the electrocardiogram (ECG) signal of pregnant women at the same time, it needs to be used with an electrode sleeve with ECG electrodes. The electrode sleeve is placed outside the shell of the uterine contraction pressure probe, which will increase the size of the uterine contraction pressure probe and affect the sterilization operation of the uterine contraction pressure probe. In addition, the assembly and disassembly of the electrode sleeve is not convenient, resulting in the uterine contraction pressure probe being large in size and inconvenient to use.

[0062] Please refer to Figures 2 and 3. To solve the above-mentioned technical problems, this application provides a uterine contraction pressure probe 100. The uterine contraction pressure probe 100 includes a housing 10, multiple electrocardiogram (ECG) electrodes 40, and a control circuit board 50. The control circuit board 50 is installed in a receiving cavity 13 and is used to receive and process ECG signals. The housing 10 includes a first housing 11, which is located on the side closest to the pregnant woman's skin during use. The first housing 11 has a first surface 111 that is close to the pregnant woman's skin during use. The multiple ECG electrodes 40 are fixed to the first surface 111 and are electrically connected to the control circuit board 50. The multiple ECG electrodes 40 are used to acquire the pregnant woman's ECG signal when the first surface 111 is close to the pregnant woman's skin and transmit the ECG signal to the control circuit board 50. When the ECG electrodes 40 are in close contact with the pregnant woman's skin, the ECG signal of the pregnant woman can be determined by measuring the potential difference between the two locations, thereby assisting the doctor in judging the pregnant woman's condition. The uterine contraction pressure probe 100 includes multiple electrocardiogram (ECG) electrodes 40, which are fixed to the first surface 111 of the first housing 11, so that the ECG electrodes 40 are integrated into the first housing 11. Compared with the ECG electrodes being sleeved on the outside of the housing, since there is no need to put an electrode sleeve on the outside of the housing, the volume of the uterine contraction pressure probe 100 is not increased, and the sterilization operation of the uterine contraction pressure probe is not affected. Therefore, the volume of the uterine contraction pressure probe 100 can be reduced and it is convenient to use.

[0063] In addition, since there is no electrode sleeve outside the shell, it is convenient for the flexible contact 20 to come into contact with the pregnant woman's skin. On the one hand, it can ensure the deformation stroke of the flexible contact 20, which is conducive to improving the measurement accuracy of uterine contraction pressure. On the other hand, a small uterine contraction pressure can make the flexible contact 20 produce the deformation required for measurement, which can reduce the pressure between the flexible contact 20 and the pregnant woman's skin, thereby preventing the flexible contact 20 from causing pressure damage to the skin due to prolonged contact with the pregnant woman's skin.

[0064] The number of ECG electrodes 40 can be three, with two of them electrically connected to the control circuit board 50 to form a pair of leads, and the other being a right leg drive electrode. The pregnant woman's ECG signal can be determined by measuring the potential difference between the two ECG electrodes 40 in the electrode pair. The number of ECG electrodes 40 can also be six, nine, or more, without specific limitation here.

[0065] In one embodiment, as shown in Figures 1 and 3, the multiple ECG electrodes 40 do not contact the flexible contact member 20. That is, the multiple ECG electrodes 40 are disposed outside the flexible contact member 20, which can prevent the ECG electrodes 40 from affecting the deformation of the flexible contact member 20, thereby ensuring that the measurement of uterine contraction pressure and the measurement of ECG signals do not interfere with each other.

[0066] Referring to Figures 1 and 3, in one embodiment, a plurality of ECG electrodes 40 are arranged at intervals around the flexible contact 20 on the first surface 111. This arrangement of multiple ECG electrodes 40 around the flexible contact 20 ensures that the electrodes are relatively dispersed. When the first surface 111 is close to the pregnant woman's skin, the multiple ECG electrodes 40 can cover a larger area of ​​the skin, thereby increasing the distance between two ECG electrodes 40 in the electrode pair and increasing the potential difference between them, which helps improve the accuracy of ECG signal measurement.

[0067] Multiple ECG electrodes 40 can be electrically connected to the control circuit board 50 via wires. Referring to Figures 2 and 3, in one embodiment, the uterine contraction pressure probe 100 includes an adapter circuit board 60, which is installed within the receiving cavity 13. Multiple ECG electrodes 40 are electrically connected to the control circuit board 50 via the adapter circuit board 60. Using the adapter circuit board 60 to electrically connect multiple ECG electrodes 40 to the control circuit board 50 makes the electrical connection between the multiple ECG electrodes 40 and the control circuit board 50 simpler, more convenient, and more stable than connecting the multiple ECG electrodes 40 to the control circuit board 50 via multiple wires.

[0068] In one embodiment, as shown in FIG3, the adapter circuit board 60 is attached to the side of the first housing 11 facing away from the first surface 111, and the outer edge of the flexible contact 20 is entirely or partially clamped between the first housing 11 and the adapter circuit board 60. The flexible contact 20 being clamped between the first housing 11 and the adapter circuit board 60 enhances the reliability of the connection between the flexible contact 20 and the first housing 11, making the flexible contact 20 less prone to detachment. Furthermore, it enhances the airtightness between the flexible contact 20 and the first housing 11, thereby reducing the risk of external moisture or liquid intruding into the uterine contraction pressure probe 100.

[0069] Referring to Figures 2, 3, and 7, in one embodiment, the pressure detection component 30 includes a rigid transmission member 31. The side of the flexible contact member 20 facing away from the contact surface 21 contacts the rigid transmission member 31. The uterine contraction pressure of the pregnant woman is transmitted through the flexible contact member 20 and the rigid transmission member 31. The adapter circuit board 60 has a second through hole 61 and may be generally annular. All or part of the rigid transmission member 31 and the flexible contact member 20 are located within the range of the first through hole 112, and their orthogonal projection onto the reference plane where the adapter circuit board 60 is located falls within the second through hole 61. This arrangement ensures that the opening range of the second through hole 61 is larger than the outer contour dimension of the rigid transmission member 31 and larger than at least a portion of the area adjacent to the contact area between the flexible contact member 20 and the rigid transmission member 31. This ensures that the adapter circuit board 60 does not contact the rigid transmission member 31, and that the adapter circuit board 60 does not affect the deformation of the flexible contact member 20 under uterine contraction pressure, so that the measurement of uterine contraction pressure and the measurement of electrocardiogram signals do not interfere with each other.

[0070] Referring to Figure 3, in one embodiment, the edge region 22 of the contact surface 21 is flush with the side of the first surface 111 outside the receiving cavity 13, and the area of ​​the contact surface 21 other than the edge region 22, as well as a portion of each ECG electrode 40, protrudes from the first surface 111 toward the external space of the receiving cavity 13. This arrangement eliminates the need for small grooves in the contact surface 21, facilitating disinfection and cleaning of the contact surface 21.

[0071] In one embodiment, as shown in Figures 3, 5, and 14, each ECG electrode 40 includes an electrode pad 41. A mounting groove 115 is formed on a first surface 111. A portion of the electrode pad 41 is embedded in the mounting groove 115. The portion of the electrode pad 41 outside the mounting groove 115 protrudes from the first surface 111 towards the external space of the accommodating cavity 13. The electrode pad 41 is electrically connected to the control circuit board 50. Embedding a portion of the electrode pad 41 in the mounting groove 115 restricts the lateral displacement of the electrode pad 41, making the ECG electrode 40 less prone to falling off. The electrode pad 41 protruding from the first surface 111 makes it easier for the electrode pad 41 to contact the pregnant woman's skin, thereby ensuring the reliability of ECG signal acquisition.

[0072] The electrode pad 41 can have its outer surface in contact with the sidewall of the mounting groove 115, making the ECG electrode 40 less prone to detachment. Referring to Figures 3, 5, and 14, in one embodiment, the electrode pad 41 includes a top wall 411 and an annular sidewall 412. The annular sidewall 412 is connected to one side of the top wall 411. The mounting groove 115 is annular, and the annular sidewall 412 is embedded in the mounting groove 115. A portion of the first housing 11 is embedded in the inner space of the annular sidewall 412. The top wall 411 protrudes from the first surface 111 towards the outer space of the accommodating cavity 13. By including the annular sidewall 412 in the electrode pad 41, and embedding a portion of the first housing 11 into the inner space of the annular sidewall 412, both the outer and inner surfaces of the electrode pad 41 are in contact with the sidewall of the mounting groove 115, increasing the contact area between the electrode pad 41 and the first housing 11, making the connection between the ECG electrode 40 and the first housing 11 more reliable.

[0073] Electrode 41 can be electrically connected to control circuit board 50 via wires. In one embodiment, as shown in Figures 3, 5, and 14, the ECG electrode 40 includes pins 42, which are connected to electrode 41. A mounting hole 116 is provided in the mounting groove 115 of the first surface 111. Pins 42 are fixed within the mounting hole 116 and connected to a converter circuit board 60. Electrode 41 is electrically connected to control circuit board 50 via pins 42 and the converter circuit board 60. Pins 42 may be soldered to the converter circuit board 60. By configuring the electrode 41 to be electrically connected to control circuit board 50 via pins 42 and the converter circuit board 60, and by fixing pins 42 within the mounting hole 116, pins 42 can effectively fix the electrode 41. Furthermore, the connection of pins 42 to the converter circuit board 60 further enhances the reliability of the connection between the ECG electrode 40 and the first housing 11.

[0074] The connection between the multiple ECG electrodes 40 and the first housing 11 can be achieved by adhesive bonding or snap-fitting, so that the multiple ECG electrodes 40 are fixedly connected to the first housing 11. In one embodiment, the multiple ECG electrodes 40 and the first housing 11 are integrally molded using an injection molding process. Integrating the multiple ECG electrodes 40 and the first housing 11 into one injection mold can enhance the adhesion between the ECG electrodes 40 and the first housing 11, thereby improving the reliability of the connection between the ECG electrodes 40 and the first housing 11.

[0075] In one embodiment, the contraction pressure probe 100 further includes a power module (not shown). The power module is electrically connected to the control circuit board 50. The power module provides electrical energy to the contraction pressure probe 100 during operation. The power module may include a battery, which may be a rechargeable battery, and the battery may be charged via wired charging or wireless charging.

[0076] The data transmission between the uterine contraction pressure probe 100 and the external host can be wired or wireless. In one embodiment, the data transmission between the uterine contraction pressure probe 100 and the external host is wireless. The uterine contraction pressure probe 100 also includes a communication module (not shown in the figure), which is used to communicate with the external host. Since the uterine contraction pressure probe 100 and the external host do not need to be connected via a data cable, the use of the uterine contraction pressure probe 100 is more convenient. The communication module can be one of a short-range communication module such as an NFC communication module, a Bluetooth communication module, or a WiFi communication module.

[0077] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A uterine contraction pressure probe, characterized in that, The device includes a housing, a flexible contact, and a pressure detection assembly. The housing has a receiving cavity, the pressure detection assembly is installed in the receiving cavity, the housing has a first through hole, and the flexible contact is disposed at the first through hole and connected to the housing. The pressure detection assembly includes a pressure sensor, a pressure detection component, and a rigid transmission component. The pressure sensor includes a connecting portion and a sensing portion. The sensing portion has a first end and a second end. The first end is connected to the connecting portion, and the second end is fixed inside the accommodating cavity. The portion of the sensing portion between the first end and the second end has a gap with the connecting portion. The two ends of the rigid transmission component are in contact with the flexible contact and the connecting portion, respectively. The uterine contraction pressure of the pregnant woman is transmitted to the sensing portion through the flexible contact, the rigid transmission component, and the connecting portion. The pressure detection component is installed on the sensing portion and is used to detect the deformation information generated by the sensing portion. The number of sensing elements is N, where N is a positive integer greater than or equal to 2. The N sensing elements are arranged on the outer periphery of the connecting part. If the outline of any one of the N sensing elements is rotated 360 / N degrees around the contact point between the rigid transmission member and the connecting part, it can coincide with the outline of another one of the N sensing elements.

2. The uterine contraction pressure probe according to claim 1, characterized in that, The number of sensing elements is two, and the outer contours of the two sensing elements are centrally symmetrical about the geometric center of the connecting part.

3. The uterine contraction pressure probe according to claim 1, characterized in that, The pressure sensor includes a mounting portion surrounding the outer periphery of each of the sensing portions. The second end of each of the sensing portions is connected to the mounting portion, and the second end is fixed within the accommodating cavity by the mounting portion.

4. The uterine contraction pressure probe according to claim 1, characterized in that, The sensing part is elongated and located between the first end and the second end, part or all of which falls outside the line connecting the first end and the second end.

5. The uterine contraction pressure probe according to claim 4, characterized in that, Each of the sensing elements is arranged around the connecting element, and at the gap between each sensing element and the connecting element, the distance from any point on the outer contour line of the connecting element to the outer contour line of the sensing element is equal.

6. The uterine contraction pressure probe according to claim 4, characterized in that, The outer contour of the connecting part is circular, and the outer contour of the sensing part located between the first end and the second end is part of the outer contour of a ring, with the center of the ring coinciding with the center of the connecting part.

7. The uterine contraction pressure probe according to any one of claims 1-6, characterized in that, The uterine contraction pressure probe includes a control circuit board, which is used to receive and process the deformation information. The control circuit board is fixedly installed inside the accommodating cavity, the pressure sensor is fixed on the control circuit board, the sensing part and the control circuit board are spaced apart in the direction of action of the rigid transmission member, and the pressure detection element is electrically connected to the control circuit board.

8. The uterine contraction pressure probe according to claim 7, characterized in that, At least two of the sensing units are respectively equipped with pressure detection elements, each of the pressure detection elements is electrically connected to the control circuit board, and the control circuit board is configured to generate uterine contraction pressure data based on the deformation information obtained by each of the pressure detection elements.

9. The uterine contraction pressure probe according to claim 1, characterized in that, The geometric center of the orthographic projection of the rigid transmission member onto the connecting part falls on the geometric center of the surface of the connecting part that contacts the rigid transmission member.

10. The uterine contraction pressure probe according to claim 9, characterized in that, The outer contours of the flexible contact and the connecting part are circular or regular polygonal, and the geometric center of the orthographic projection of the flexible contact on the connecting part falls on the geometric center of the surface of the connecting part that contacts the rigid transmission member.

11. The uterine contraction pressure probe according to claim 9, characterized in that, The pressure detection assembly includes a fixing member that securely connects the connecting portion to the rigid transmission member.

12. The uterine contraction pressure probe according to claim 3, characterized in that, The mounting portion, the sensing portion, and the connecting portion are integrally formed to form the pressure sensing element.

13. The uterine contraction pressure probe according to claim 1, characterized in that, The housing includes a first housing having a first surface that is close to the pregnant woman's skin during use. The first surface has a first through hole. The flexible contact has a contact surface for conforming to the pregnant woman's skin. The edge region of the contact surface is flush with the side of the first surface outside the accommodating cavity. The area of ​​the contact surface other than the edge region protrudes from the first surface toward the external space of the accommodating cavity. The side of the flexible contact facing away from the contact surface contacts the pressure detection component.

14. The uterine contraction pressure probe according to claim 13, characterized in that, The size of the contact surface protruding from the first surface gradually increases from the outer periphery of the flexible contact member to the central region, and the portion of the contact surface protruding from the first surface on the side of the accommodating cavity is a smooth curved surface structure.

15. The uterine contraction pressure probe according to claim 14, characterized in that, The maximum dimension of the contact surface protruding from the first surface into the external space of the accommodating cavity, excluding the edge region, ranges from 0.5 to 2 mm.

16. The uterine contraction pressure probe according to claim 13, characterized in that, The thickness of the flexible contact in the outer peripheral region within the first through hole range is less than the thickness of the central region of the flexible contact.

17. The uterine contraction pressure probe according to claim 13, characterized in that, The side of the flexible contact member that faces away from the contact surface contacts the rigid transmission member; The flexible contact member has a receiving groove and an annular groove on the side facing away from the contact surface, and a part of the rigid transmission member is received in the receiving groove; The annular groove is arranged around the rigid transmission member, and the thickness of the area where the annular groove is formed on the flexible contact member is less than the thickness of the central area of ​​the flexible contact member.

18. The uterine contraction pressure probe according to any one of claims 13-17, characterized in that, The uterine contraction pressure probe includes multiple electrocardiogram electrodes and a control circuit board. The control circuit board is installed in the accommodating cavity and is used to receive and process electrocardiogram signals. The plurality of electrocardiogram (ECG) electrodes are fixed on the first surface and electrically connected to the control circuit board. The plurality of ECG electrodes are used to acquire the ECG signal of the pregnant woman when the first surface is close to the skin of the pregnant woman and transmit the ECG signal to the control circuit board.

19. The uterine contraction pressure probe according to claim 18, characterized in that, The uterine contraction pressure probe includes an adapter circuit board, which is installed in the accommodating cavity, and the plurality of electrocardiogram electrodes are electrically connected to the control circuit board via the adapter circuit board; The adapter circuit board is attached to the side of the first housing opposite to the first surface, and the outer edge of the flexible contact is clamped between the first housing and the adapter circuit board in whole or in part.

20. The uterine contraction pressure probe according to claim 19, characterized in that, The side of the flexible contact member that faces away from the contact surface contacts the rigid transmission member; The adapter circuit board has a second through hole, and all or part of the rigid transmission component and the flexible contact component are located within the range of the first through hole. The orthographic projection of the adapter circuit board onto the reference plane falls within the second through hole.

21. The uterine contraction pressure probe according to claim 18, characterized in that, The plurality of electrocardiogram electrodes are arranged at intervals around the flexible contact on the first surface.

22. The uterine contraction pressure probe according to claim 13, characterized in that, The first housing has an annular notch on the side opposite to the accommodating cavity at the first through hole. The flexible contact is connected to the annular notch, and the outer edge of the flexible contact is wholly or partially embedded in the annular notch; and / or, The flexible contact has a groove along its outer periphery, and the portion of the first housing with the annular notch engages within the groove; and / or The dimension of the flexible contact member located inside the receiving cavity is larger than the dimension of the flexible contact member located outside the receiving cavity; and / or, The first housing has a connection hole at the annular notch, and a portion of the flexible contact is embedded in the connection hole.

23. The uterine contraction pressure probe according to claim 13, characterized in that, The flexible contact is made of silicone.

24. The uterine contraction pressure probe according to claim 18, characterized in that, Each of the ECG electrodes includes an electrode pad, a mounting groove is formed on the first surface, a portion of the electrode pad is embedded in the mounting groove, and the portion of the electrode pad outside the mounting groove protrudes from the first surface toward the external space of the receiving cavity. The electrode pad is electrically connected to the control circuit board; and / or, The uterine contraction pressure probe includes an adapter circuit board, which is installed in the accommodating cavity. Each ECG electrode includes an electrode pad and a pin, which is connected to the electrode pad. A mounting groove is provided on the first side, and a portion of the electrode pad is embedded in the mounting groove. A mounting hole is provided in the mounting groove on the first side, and the pin is fixed in the mounting hole. The pin is connected to the adapter circuit board.

25. The uterine contraction pressure probe according to claim 24, characterized in that, The electrode sheet includes a top wall and an annular side wall. The annular side wall is connected to one side of the top wall. The mounting groove is annular. The annular side wall is embedded in the mounting groove. A portion of the first housing is embedded in the inner space of the annular side wall. The top wall protrudes from the first surface toward the outer space of the accommodating cavity.

26. The uterine contraction pressure probe according to claim 18, characterized in that, The contact surface, excluding the edge region, and a portion of each ECG electrode protrude from the first surface toward the external space of the accommodating cavity.

27. The uterine contraction pressure probe according to claim 18, characterized in that, The plurality of ECG electrodes are integrally formed with the first housing using an injection molding process.

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