Connector of ambulatory blood pressure instrument

Abstract

The utility model relates to a connector of an ambulatory blood pressure instrument, which belongs to the field of ambulatory blood pressure instruments and comprises a male connector, a female connector and a positioning mechanism. A first through hole is formed in the male connector, the male connector comprises a first fastening end and a first connecting end, the first fastening end is provided with a limiting mechanism, and the first connecting end communicates with an outer air pipe. The female joint comprises a second fastening end and a second connecting end, step through holes are formed in the female joint, the step through holes comprise a second through hole and a third through hole, the second fastening end comprises at least one fourth through hole, the fourth through hole penetrates through the hole wall of the third through hole, the first fastening end is inserted into the third through hole, and the second fastening end comprises a second fastening mechanism; the second fastening mechanism is used for fixing the female joint to an air path interface of the ambulatory blood pressure instrument, and the second connecting end is communicated with an inner air pipe of the ambulatory blood pressure instrument; the positioning mechanism is arranged in the fourth through hole, the positioning mechanism is matched with the limiting mechanism to limit movement of the limiting mechanism, and the technical problem that in the prior art, a connector is not firm is solved.

Description

Technical Field

[0001] This invention relates to the field of ambulatory blood pressure monitors, and in particular to a connector for an ambulatory blood pressure monitor. Background Technology

[0002] An ambulatory blood pressure monitor (APS) is a medical device used to continuously monitor changes in blood pressure. It automatically and periodically measures blood pressure during daily activities, providing more comprehensive and accurate blood pressure data and revealing secrets about blood pressure that traditional measurements cannot capture. APS has wide applications in clinical diagnosis, treatment optimization, risk assessment, health management, and scientific research. An APS measures blood pressure through periodic inflation and deflation. Its components typically include a main unit, an external endotracheal tube, and a cuff. The external endotracheal tube is not only the channel for gas transmission but also a crucial medium for pressure signal transmission. For example, during inflation, the gas generated by the main unit needs to be transmitted through the external endotracheal tube; during deflation, the main unit needs to receive pressure signals through the external endotracheal tube. Therefore, the connection between the main unit and the external endotracheal tube is essential. Currently, the main unit and the external endotracheal tube are often connected via a connector. Due to design flaws in the connector, the connection between the main unit and the external endotracheal tube is often not secure. This defect will adversely affect the use of the ambulatory blood pressure monitor. For example, patients may pull on the external endotracheal tube during daily activities, and a loose connection may cause the external endotracheal tube to detach due to external force, resulting in interruption of blood pressure monitoring. Interruption of monitoring may delay diagnosis and treatment, causing serious medical accidents. A loose connection may also cause the pressure signal transmitted to the main unit through the external endotracheal tube to be distorted, affecting the measurement accuracy. A loose connection may also cause the machine to frequently report errors or malfunction, thereby causing patient anxiety or fear and affecting monitoring compliance.

[0003] Meanwhile, current connectors often employ a structure with a male connector on the main unit and a female connector on the external endotracheal tube. The connection between the main unit and the external endotracheal tube is achieved by inserting the female connector into the male connector. This connection method exposes the male connector to the main unit, allowing any tubing of a matching size to be plugged in. On one hand, when using an ambulatory blood pressure monitor, it's easy to directly insert the external endotracheal tube into the male connector without connecting the female connector, affecting the connection's strength and airtightness. On the other hand, in complex operating environments with multiple medical devices operating simultaneously and numerous wiring and interfaces, the male connector on the main unit increases the risk of misconnection to tubing from other devices. Misconnection can have adverse consequences. For example, misconnecting the ambulatory blood pressure monitor's outlet to another device (such as a high-pressure air source) may damage the machine, increasing repair or replacement costs. Misconnection can also cause abnormal operation of the ambulatory blood pressure monitor (such as over-inflation of the cuff), leading to arm pain, bruising, or even nerve damage in the patient. Furthermore, misconnection can cause distorted or lost measurement data from the ambulatory blood pressure monitor, making treatment plans based on incorrect data ineffective or even harmful. Utility Model Content

[0004] In view of this, the present invention provides a connector for an ambulatory blood pressure monitor, which aims to solve the technical problem that the connector between the main unit and the external trachea of ​​the ambulatory blood pressure monitor is not secure in the prior art. At the same time, it also solves the technical problem that the main unit of the ambulatory blood pressure monitor is easily directly connected to the external trachea, thus affecting the firmness and airtightness of the connection, and is easily connected to other pipelines by mistake, thus affecting its use.

[0005] To achieve the above objectives, the present invention provides a connector for an ambulatory blood pressure monitor.

[0006] The connector includes a male connector, a female connector, and a positioning mechanism;

[0007] The male connector includes a first through hole, and the male connector includes a first fastening end and a first connecting end. A limit mechanism is provided on the first fastening end, and the first connecting end is connected to the external air tube of the dynamic blood pressure monitor.

[0008] The female connector includes a second fastening end and a second connecting end. The female connector has a stepped through hole inside, which includes a second through hole and a third through hole. The diameter of the second through hole is smaller than the diameter of the third through hole. The second fastening end includes at least one fourth through hole, which penetrates the wall of the third through hole. The first fastening end is inserted into the third through hole. The second fastening end includes a second fastening mechanism for fixing the female connector to the airway interface of the dynamic blood pressure monitor. The second connecting end is connected to the internal air tube of the dynamic blood pressure monitor.

[0009] The positioning mechanism is disposed in the fourth through hole, and the positioning mechanism restricts the movement of the limiting mechanism by cooperating with the limiting mechanism.

[0010] Optionally, the positioning mechanism includes a cylindrical positioning shell, a spring, and a positioning bead. The positioning shell includes a receiving cavity with an open end and a closed end. One end of the spring is connected to the bottom of the receiving cavity, and the other end is connected to the positioning bead. The size of the positioning bead matches the size of the opening of the receiving cavity. When the spring is in its natural state, part of the positioning bead is located inside the receiving cavity, and another part is located outside the receiving cavity. The positioning bead restricts the movement of the limiting mechanism by cooperating with the limiting mechanism.

[0011] Optionally, the closed end of the receiving cavity is provided with an exhaust hole, the fourth through hole includes a first sub-through hole and a second sub-through hole, the diameter of the first sub-through hole is smaller than the diameter of the second sub-through hole, the open end is located at the end of the first sub-through hole, the closed end is located at the end of the second sub-through hole, a part of the outer surface of the positioning shell is in contact with the inner wall of the first sub-through hole, and the diameter of the second sub-through hole is larger than the diameter of the closed end.

[0012] Optionally, the limiting mechanism includes a third annular groove disposed on the outer surface of the first fastening end, and the positioning mechanism restricts the movement of the limiting mechanism by cooperating with the third annular groove.

[0013] Optionally, a baffle is provided between the first fastening end and the first connecting end, and when the first fastening end is inserted into the third through hole, the baffle abuts against the port of the second fastening end of the female connector.

[0014] Optionally, a first sealing mechanism is provided on the second fastening end, and the first sealing mechanism is disposed on the outer wall of the third through hole; and / or

[0015] A second sealing mechanism is provided between the first fastening end and the third through hole, and the second sealing mechanism is located between the second through hole and the fourth through hole; and / or

[0016] A third sealing mechanism is provided between the positioning mechanism and the fourth through hole.

[0017] Optionally, the first sealing mechanism includes at least one pair of first annular grooves and a first sealing ring, wherein the first annular grooves are disposed on the outer surface of the second fastening end, and the first sealing rings are located within the annular grooves;

[0018] The second sealing mechanism includes at least one pair of second annular grooves and a second sealing ring. The second annular groove is disposed on the inner wall of the third through hole, and the second sealing ring is located inside the second annular groove.

[0019] The third sealing mechanism includes at least one pair of third annular grooves and a third sealing ring. The third annular grooves are disposed on the inner wall of the fourth through hole, and the third sealing rings are located inside the third annular grooves.

[0020] Optionally, the second fastening mechanism includes at least one slot and at least one plane disposed on the outer surface of the second fastening end, wherein the direction of the slot is perpendicular to the axis of the second fastening end, the plane is parallel to the axis of the second fastening end, and the slot is disposed at the plane.

[0021] Optionally, the second fastening mechanism includes four arc surfaces and four planes disposed on the outer surface of the second fastening end. The four planes and the four arc surfaces are arranged at intervals along the circumference of the second fastening end. There are three fourth through holes and three positioning mechanisms. The fourth through holes are disposed on the planes and are evenly distributed along the circumference of the second fastening end. There are two slots, and the two slots are disposed in opposite positions.

[0022] In addition, to achieve the above objectives, the present invention also provides an ambulatory blood pressure monitor, the ambulatory blood pressure monitor including the connector of the ambulatory blood pressure monitor described in any of the preceding claims.

[0023] This utility model has at least the following beneficial effects:

[0024] 1. The connector of the ambulatory blood pressure monitor described in this application includes a male connector, a female connector, and a positioning mechanism. The male connector includes a first fastening end and a first connecting end, and the male connector includes a first through hole that penetrates the first fastening end and the first connecting end. A limiting mechanism is provided on the first fastening end, which is a third annular groove located on the outer surface of the first fastening end. The first connecting end is connected to the external trachea of ​​the ambulatory blood pressure monitor. The female connector includes a second fastening end and a second connecting end, and the female connector includes a stepped through hole that penetrates the second fastening end and the second connecting end. The stepped through hole includes a second through hole and a third through hole, the diameter of which is smaller than the diameter of the third through hole. The second fastening end includes three... A fourth through hole, which penetrates the wall of the third through hole, is provided. A first fastening end is inserted into the third through hole. A second fastening end includes a second fastening mechanism for fixing the female connector to the airway interface of the dynamic blood pressure monitor. A second connecting end is connected to the internal airway of the dynamic blood pressure monitor. A positioning mechanism is provided in the fourth through hole. The positioning mechanism includes a cylindrical positioning shell, a spring, and a positioning bead. The positioning shell includes a receiving cavity with an open end and a closed end. One end of the spring is connected to the bottom of the receiving cavity, and the other end is connected to the positioning bead. The size of the positioning bead matches the size of the opening of the receiving cavity. When the spring is in its natural state, part of the positioning bead is located inside the receiving cavity, and the other part is located outside the receiving cavity. With this structure, because the airway interface and female connector of the ambulatory blood pressure monitor are fixedly connected, the external air tube must be connected to the male connector before it can be connected to the main unit of the ambulatory blood pressure monitor by inserting the male connector into the female connector. This avoids the external air tube being directly connected to the main unit of the ambulatory blood pressure monitor without being connected to the male connector, thus ensuring the robustness and airtightness of the connection between the main unit and the external air tube. In addition, because the airway interface and female connector of the ambulatory blood pressure monitor are fixedly connected, the airway interface of the main unit of the ambulatory blood pressure monitor has a recessed structure and must be connected to a matching male connector. Therefore, even if the ambulatory blood pressure monitor is in a complex operating environment with multiple medical device pipelines around it, the recessed structure at the outlet of other pipelines does not match the female connector at the airway interface of the ambulatory blood pressure monitor, thus preventing the main unit from being mistakenly connected to other pipelines.

[0025] 2. The ambulatory blood pressure monitor described in this application includes a first sealing mechanism, a second sealing mechanism, and a third sealing mechanism. The first sealing mechanism is disposed on the second fastening end and located on the outer wall of the third through hole. The first sealing mechanism includes a pair of first annular grooves and a first sealing ring. The first annular grooves are disposed on the outer surface of the second fastening end, and the first sealing rings are located within the first annular grooves. When the female connector is fixed to the air passage interface of the ambulatory blood pressure monitor, the first sealing ring is compressed and undergoes elastic deformation. After deformation, the first sealing ring makes tight contact with the first annular grooves and the air passage interface of the ambulatory blood pressure monitor, filling the tiny gap between the first annular grooves and the air passage interface of the ambulatory blood pressure monitor, thus forming a sealing barrier at the connection between the first annular grooves and the air passage interface of the ambulatory blood pressure monitor to prevent gas leakage, thereby achieving a sealing effect. By providing a second sealing mechanism between the first fastening end and the third through hole, the second sealing mechanism includes a second annular groove and a second sealing ring. The second annular groove is disposed on the inner wall of the third through hole, and the second sealing ring is located within the second annular groove. When the male connector is inserted into the female connector, the second sealing ring, under its action, fills the gap between the first fastening end of the male connector and the second annular groove inside the female connector, achieving a sealed connection between the male and female connectors and ensuring the sealing at the connection between the first through hole and the stepped through hole. Simultaneously, the second sealing mechanism is positioned between the second and fourth through holes, preventing gas from entering between the first fastening end and the third through hole through the fourth through hole, thus affecting the sealing at the connection between the first through hole and the stepped through hole. By providing a third sealing mechanism between the positioning mechanism and the fourth through hole, the third sealing mechanism includes a third annular groove and a third sealing ring. The third annular groove is disposed on the inner wall of the fourth through hole, and the third sealing ring is located within the third annular groove 341. Similarly, under the action of the third sealing ring, a sealed connection between the positioning mechanism and the fourth through hole is achieved. In summary, the ambulatory blood pressure monitor described in this application ensures the airtightness of the ambulatory blood pressure monitor during use. Attached Figure Description

[0026] 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.

[0027] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0028] Figure 1 This is a schematic diagram of the connector of a dynamic blood pressure monitor according to an embodiment of this application;

[0029] Figure 2 for Figure 5CC section view;

[0030] Figure 3 This is a front view structural diagram of the connector of a dynamic blood pressure monitor according to an embodiment of this application;

[0031] Figure 4 for Figure 3 BB section view;

[0032] Figure 5 This is a front view schematic diagram of the male connector being inserted into the female connector in the connector head of a dynamic blood pressure monitor according to an embodiment of this application;

[0033] Figure 6 for Figure 5 Sectional view of AA;

[0034] Figure 7 for Figure 6 Enlarged view of section V1;

[0035] Figure 8 for Figure 4 Enlarged view of section V2. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] An ambulatory blood pressure monitor typically includes a main unit, an external endotracheal tube, and a cuff. The connector of the ambulatory blood pressure monitor described in this application is used to connect the main unit and the external endotracheal tube.

[0038] Example 1: Reference Figures 1-8The connector of the ambulatory blood pressure monitor described in this embodiment includes a male connector 1, a female connector 2, and a positioning mechanism 3. The male connector is a connector with a protruding portion that is inserted into the female connector to achieve connection. The female connector is a connector with a recessed portion that accommodates the male connector to achieve connection. In this embodiment, one end of the male connector 1 includes a first fastening end 12, and the other end includes a first connecting end 13. The first fastening end 12, as the protruding portion of the male connector 1, can cooperate with the female connector 2 to achieve connection. The first fastening end 12 and the first connecting end 13 are integrally formed, and the interior of the male connector 1 includes a first through hole 11. The first through hole 11 penetrates the first fastening end 12 and the first connecting end 13. The first connecting end 13 communicates with the external air tube of the ambulatory blood pressure monitor, allowing gas (usually air) entering the first through hole 11 of the male connector 1 to pass through. The first connecting end 13 is fed into the external air tube. The first connecting end 13 can be connected to the external air tube by insertion, that is, the first connecting end 13 is inserted into the external air tube. In specific applications, the port of the first connecting end 13 can be designed as a cone. The diameter of the first connecting end 13 increases near the port of the first connecting end 13, and then the diameter of the first connecting end 13 gradually decreases along the port away from the first connecting end 13. When the first connecting end 13 is inserted into the external air tube, the first connecting end 13 and the external air tube are squeezed against each other in the cone position. As the pressure increases, the contact surface gradually tightens. A good sealing effect between the first connecting end 13 and the external air tube can be achieved through the self-sealing effect. At the same time, the cone-shaped structure can also provide connection stability, making the connection between the first connecting end 13 and the external air tube less likely to loosen or fall off.

[0039] A limiting mechanism is provided on the first fastening end 12. In this embodiment, the limiting mechanism is a third annular groove 121 located on the outer surface of the first fastening end 12. The third annular groove 121 is a groove machined along the circumference of the first fastening end 12. In other embodiments, the limiting mechanism may also be a plurality of annular grooves spaced apart along the axial direction of the first fastening end 12, or it may be composed of several independent pits. The pits may be located in the same plane perpendicular to the axial direction of the first fastening end 12, or they may be located in different planes perpendicular to the axial direction of the first fastening end 12.

[0040] One end of the female connector 2 includes a second fastening end 22, and the other end includes a second connecting end 23. The female connector 2 internally includes a stepped through hole 21, which penetrates the second fastening end 22 and the second connecting end 23. The stepped through hole 21 is a hole machined axially in the female connector 2 and has two different diameters along its axial direction. The connection point of the two holes with different diameters forms a stepped surface. (Reference) Figure 4The stepped through hole 21 includes a second through hole 211 and a third through hole 212. The diameter of the second through hole 211 is smaller than the diameter of the third through hole 212. The third through hole 212 serves as a recessed portion of the female connector 2 and can be used to accommodate the male connector 1 for connection. In this embodiment, the first fastening end 12 is inserted into the third through hole 212. The stepped through hole 21 is designed to be connected by two holes of different diameters. The male connector 1 is inserted into the larger diameter hole, i.e., the third through hole 212, so that the first through hole 11 inside the male connector 1 and the second through hole 211 inside the female connector 2 are connected. Preferably, the diameter of the first through hole 11 is equal to the diameter of the second through hole 211. This structural design is beneficial to unify the diameter of the tubing system of the ambulatory blood pressure monitor. The tubing system of the ambulatory blood pressure monitor refers to the component used to transmit gas (usually air) in the ambulatory blood pressure monitor. It is a key part for blood pressure measurement. A unified tubing diameter can ensure that the pressure signal remains consistent during transmission and reduce measurement errors.

[0041] The second connection end 23 is connected to the internal trachea of ​​the ambulatory blood pressure monitor, which is located inside the main unit of the ambulatory blood pressure monitor. The port of the second connection end 23 can be designed as a cone shape. As mentioned above, the cone shape design is beneficial to achieving the sealing and stability between the second connection end 23 and the internal trachea of ​​the ambulatory blood pressure monitor.

[0042] The second fastening end 22 includes at least one fourth through hole 221, which is three in this embodiment. The fourth through hole 221 penetrates the hole wall 2121 of the third through hole 212. The second fastening end 22 includes a second fastening mechanism for fixing the female connector 2 to the air circuit interface of the dynamic blood pressure monitor. The air circuit interface is located on the main body of the dynamic blood pressure monitor. The second fastening mechanism can be a threaded structure, so that the female connector 2 is screwed to the air circuit interface of the dynamic blood pressure monitor.

[0043] refer to Figures 6-7 The positioning mechanism 3 is disposed in the fourth through hole 221. The positioning mechanism 3 includes a cylindrical positioning shell 31, a spring 32 and a positioning bead 33. The positioning shell 31 includes a receiving cavity 311 inside. The receiving cavity 311 includes an open end 3112 and a closed end 3111. One end of the spring 32 is connected to the bottom of the receiving cavity 311, and the other end is connected to the positioning bead 33. The size of the positioning bead 33 matches the size of the opening of the receiving cavity 311, which is beneficial for the receiving cavity to limit the positioning bead. When the spring 32 is in its natural state, part of the positioning bead 33 is located inside the receiving cavity 311, and the other part is located outside the receiving cavity 311. The positioning bead 33 restricts the movement of the third annular groove 121 by cooperating with the third annular groove 121.

[0044] The beneficial effects and operating principle of the ambulatory blood pressure monitor described in this embodiment are as follows: The connector of the ambulatory blood pressure monitor in this embodiment includes a male connector, a female connector, and a positioning mechanism. The male connector includes a first fastening end and a first connecting end, and its interior includes a first through hole that penetrates both the first fastening end and the first connecting end. A limiting mechanism is provided on the first fastening end, which is a third annular groove located on the outer surface of the first fastening end. The first connecting end is connected to the external trachea of ​​the ambulatory blood pressure monitor. The female connector includes a second fastening end and a second connecting end, and its interior includes a stepped through hole that penetrates both the second fastening end and the second connecting end. The stepped through hole includes a second through hole and a third through hole, with the diameter of the second through hole being smaller than the diameter of the third through hole. The second fastening end includes three fourth through holes, and the fourth through holes penetrate the wall of the third through hole. The first fastening end is inserted into the third through hole. The second fastening end includes a second fastening mechanism, which is used to fix the female connector to the airway interface of the dynamic blood pressure monitor. The second connecting end is connected to the internal air tube of the dynamic blood pressure monitor. The positioning mechanism is set in the fourth through hole. The positioning mechanism includes a cylindrical positioning shell, a spring, and a positioning bead. The positioning shell includes a receiving cavity, which includes an open end and a closed end. One end of the spring is connected to the bottom of the receiving cavity, and the other end is connected to the positioning bead. The size of the positioning bead matches the size of the opening of the receiving cavity. When the spring is in its natural state, part of the positioning bead is located inside the receiving cavity, and the other part is located outside the receiving cavity.

[0045] With this structure, under the action of the spring's elastic force, the positioning bead connected to the spring can partially extend out of the receiving cavity inside the positioning shell, or it can retract into the receiving cavity. The positioning mechanism is located in the fourth through hole. During the process of the first fastening end of the male connector being inserted into the third through hole, when the first fastening end has not yet reached the position of the fourth through hole, the spring is in its natural state, and part of the positioning bead extends out of the receiving cavity. When the first fastening end reaches the position of the fourth through hole, the first fastening end contacts and squeezes the positioning bead, at which point the positioning bead retracts into the receiving cavity. As the first fastening end continues to be inserted into the third through hole, the third annular groove on the first fastening end reaches the position of the fourth through hole. At this point, the positioning bead loses the squeezing action of the first fastening end, the spring returns to its natural state, and the positioning bead is subjected to... The spring's elastic force extends out of the receiving cavity and is placed in the third annular groove. The size of the positioning bead matches the size of the third annular groove, so that when the positioning bead is placed in the third annular groove, the positioning bead restricts the movement of the third annular groove. This structure restricts the movement of the male connector relative to the female connector, ensuring that the male and female connectors maintain their relative positions and preventing loosening or slippage of the male connector from the female connector. This achieves a secure connection between the male and female connectors. The first connection end of the male connector is connected to the external air tube, and the second connection end of the female connector is fixed to the airway interface of the dynamic blood pressure monitor main unit through the second fastening mechanism. Thus, under the action of the male and female connectors, a secure connection between the external air tube and the dynamic blood pressure monitor is achieved.

[0046] Meanwhile, this embodiment inserts the male connector into the female connector, which can quickly achieve positioning and fixation between the male and female connectors. The steel ball can retract and extend multiple times, which is also suitable for scenarios that require frequent use. Its structure is simple, easy to use and install, and convenient for medical staff and patients to install and use.

[0047] Furthermore, on the one hand, because the airway interface of the ambulatory blood pressure monitor is connected to the female connector through the second fastening mechanism, the airway interface of the ambulatory blood pressure monitor has a recessed part, which requires a male connector with a protruding part to connect with it. On the other hand, the opening of the external trachea is a recessed interface. Only when the external trachea is connected to the male connector can the female connector on the main unit be inserted through the male connector to achieve connection with the main unit. Therefore, this embodiment prevents the possibility of directly inserting the external trachea into the ambulatory blood pressure monitor main unit, ensuring the firmness and airtightness of the connection between the main unit and the external trachea. On the other hand, by connecting the airway interface on the main unit to the female connector, even if the ambulatory blood pressure monitor is in a complex operating environment with various medical device pipelines around it, the recessed structure at the opening of other pipelines does not match the female connector at the airway interface of the ambulatory blood pressure monitor, thus preventing the main unit from being mistakenly connected to other pipelines.

[0048] Example 2: Based on Example 1, the connector of the dynamic blood pressure monitor described in this example further includes a first sealing mechanism, a second sealing mechanism, and a third sealing mechanism. The first sealing mechanism is disposed on the second fastening end and located on the outer wall of the third through hole. The first sealing mechanism includes a pair of first annular grooves 2231 and a first sealing ring 2232. The first annular grooves 2231 are disposed on the outer surface of the second fastening end 22, and the first sealing ring 2232 is located inside the annular grooves. The second sealing mechanism is located between the first fastening end 12 and the third through hole 212, and is located on the outer wall of the third through hole 212. Between the second through hole 211 and the fourth through hole 221; the second sealing mechanism includes a second annular groove 2241 and a second sealing ring (not shown in the figure), the second annular groove 2241 is disposed on the inner wall of the third through hole 212, and the second sealing ring is located in the second annular groove 2241; the third sealing mechanism is located between the positioning mechanism 3 and the fourth through hole 221, the third sealing mechanism includes a third annular groove 341 and a third sealing ring (not shown in the figure), the third annular groove 341 is disposed on the inner wall of the fourth through hole 221, and the third sealing ring is located in the third annular groove 341.

[0049] In specific applications, at least one of the first sealing mechanism, the second sealing mechanism, and the third sealing mechanism may be selected as needed, for example, including the first sealing mechanism and the second sealing mechanism but excluding the third sealing mechanism.

[0050] Ambulatory blood pressure monitors work by inflating the cuff to compress the artery and block blood flow, then slowly deflating it. The pressure fluctuations caused by the arterial pulsation are used to calculate blood pressure. Strict airtightness is crucial throughout this process; otherwise, serious consequences can occur. For example, air leakage during cuff inflation may prevent the cuff from reaching the target pressure, resulting in incomplete blood flow closure and an underestimation of systolic blood pressure, leading to a false diagnosis of hypotension. Similarly, air leakage during deflation can cause abnormal deflation rates, potentially prolonging the recognition time of arterial pulsation signals and misinterpreting diastolic blood pressure, resulting in a false diagnosis of hypertension. More severe leaks can even prevent the ambulatory blood pressure monitor from detecting valid signals and skip measurements, resulting in no data recording for certain periods. Therefore, the airtightness of the ambulatory blood pressure monitor is the lifeline of measurement accuracy. This embodiment addresses this by setting a first sealing mechanism, a second sealing mechanism, and a third sealing mechanism. The first sealing mechanism is located on the second fastening end 22 and on the outer wall of the third through hole. The first sealing mechanism includes a pair of first annular grooves 2231 and a first sealing ring 2232. The first annular grooves 2231 are located on the outer surface of the second fastening end 22, and the first sealing ring 2232 is located within the first annular grooves 2231. When the female connector 2 is fixed to the airway interface of the ambulatory blood pressure monitor, the first sealing mechanism... When the sealing ring is compressed, it undergoes elastic deformation. After deformation, the first sealing ring 2232 makes tight contact with the first annular groove 2231 and the air passage interface of the ambulatory blood pressure monitor, filling the tiny gap between the first annular groove 2231 and the air passage interface of the ambulatory blood pressure monitor. This creates a sealing barrier at the connection between the first annular groove 2231 and the air passage interface of the ambulatory blood pressure monitor, preventing gas leakage and achieving a sealing effect. A second sealing mechanism is provided between the first fastening end 12 and the third through hole 212. The second sealing mechanism includes a second annular groove 2241 and a second sealing ring. The second annular groove 2241 is disposed on the inner wall of the third through hole 212, and the second sealing ring is located inside the second annular groove 2241. When the male connector 1 is inserted into the female connector 2, under the action of the second sealing ring, the gap between the first fastening end 12 of the male connector and the second annular groove 2241 inside the female connector 2 can also be filled by the squeezed sealing ring, realizing the sealed connection between the male connector 1 and the female connector 2, ensuring the sealing of the connection between the first through hole 11 and the stepped through hole 21, and simultaneously positioning the second sealing mechanism between the second through hole 211 and the fourth through hole 221. This prevents gas from entering between the first fastening end 12 and the third through hole 212 through the fourth through hole 221, thus avoiding any impact on the sealing performance at the connection between the first through hole 11 and the stepped through hole 21. By setting a third sealing mechanism between the positioning mechanism 3 and the fourth through hole 221, the third sealing mechanism includes a third annular groove 341 and a third sealing ring. The third annular groove 341 is located on the inner wall of the fourth through hole 221, and the third sealing ring is located inside the third annular groove 341. Similarly, under the action of the third sealing ring, a sealed connection between the positioning mechanism 3 and the fourth through hole 221 is achieved.

[0051] In this embodiment, the first annular groove, the second annular groove, and the third annular groove respectively limit the first sealing ring, the second sealing ring, and the third sealing ring. In specific applications, the first annular groove, the second annular groove, and the third annular groove can also be located in different positions. For example, the second annular groove can be located at the first fastening end of the male connector or on the stepped surface at the connection between the second through hole and the third through hole. In other embodiments, the first sealing mechanism can also include only the first sealing ring, which is sleeved on the outer surface of the second fastening end. The second sealing mechanism can also include only the second sealing ring, which is sleeved on the outer surface of the second fastening end of the male connector. The third sealing mechanism can also include only the third sealing ring, which is sleeved on the outer surface of the fixed shell.

[0052] In addition, in some embodiments, the number of the first annular groove and the first sealing ring, the second annular groove and the second sealing ring, and the third annular groove and the third sealing ring can also be multiple pairs, for example, there can be two pairs. The effect of multi-level sealing can be achieved by using two pairs of first annular grooves and the first sealing ring, two pairs of second annular grooves and the second sealing ring, and two pairs of third annular grooves and the third sealing ring.

[0053] The airtightness of the ambulatory blood pressure monitor is achieved through the first, second, and third sealing mechanisms, eliminating the adverse consequences caused by air leakage during use.

[0054] Example 3: Based on Example 1, in practical applications, when the first fastening end 12 of the male connector 1 is inserted into the third through hole 212 of the female connector 2, the movement of the third annular groove 121 needs to be restricted by the spring 32 and the positioning bead 33 to achieve a firm connection between the male connector 1 and the female connector 2. During this process, the air pressure inside the receiving cavity 311 and the air pressure outside may be inconsistent. When the positioning bead 33 extends out of and retracts into the receiving cavity 311, it may be affected by air resistance, thereby weakening the restrictive effect of the positioning mechanism 3 on the third annular groove 121. To solve this problem, this embodiment provides an exhaust hole 3113 on the closed end 3111 of the receiving cavity 311. The exhaust hole 3113 can... To balance the pressure inside and outside the receiving cavity 311, thereby preventing the positioning bead 33 from being affected by air resistance and reducing its sensitivity when extending out of and retracting into the receiving cavity 311; at the same time, the fourth through hole 221 in this embodiment includes a first sub-through hole 2211, a second sub-through hole 2212 and a third sub-through hole 2213, the diameters of the first sub-through hole 2211, the third sub-through hole 2213 and the second sub-through hole 2212 increase sequentially, the first sub-through hole 2211, the second sub-through hole 2212 and the third sub-through hole 2213 are connected by a tapered surface, and the opening of the second sub-through hole 2212 is tapered, the diameter of the tapered portion gradually increases along the direction away from the second sub-through hole 2212; the opening end 3112 of the receiving cavity 311 Located at one end of the first sub-through hole 2211, the closed end 3111 of the receiving cavity 311 is located at one end of the second sub-through hole 3112. A portion of the outer surface of the positioning shell 31 is in contact with the inner walls of the first sub-through hole 2211 and the third sub-through hole 2212. The positioning shell 31 is limited by the first sub-through hole 2211 and the third sub-through hole 2212 to prevent the positioning mechanism 3 from moving in the fourth through hole 221. The diameter of the second sub-through hole 2212 is larger than the diameter of the closed end 3111. By placing the closed end 3111 at one end of the second sub-through hole 3112, which has a larger diameter, it helps air to quickly enter and exit the exhaust hole 3113, balances the internal and external pressures of the receiving cavity 311, and avoids the positioning bead 33 from being obstructed due to air pressure. Secondly, the larger diameter of the second sub-through hole compared to the closed end 3111 also facilitates the insertion of the positioning mechanism 3 into the fourth through hole 221. On the other hand, the diameter of the fourth through hole 221 decreases sequentially through the second sub-through hole 2212, the third sub-through hole 2213, and the first sub-through hole 2211 along the insertion direction of the positioning mechanism 3. Furthermore, the opening of the second sub-through hole 2212 is tapered. This structure ensures that the positioning mechanism 3 is aligned with the central axis of the fourth through hole 221 during the insertion process, reducing friction between the positioning mechanism 3 and the inner wall of the fourth through hole 221. This makes the insertion process fast and accurate, reducing operation time and error rate. In other words, the fourth through hole 221 plays a guiding role for the positioning mechanism 3.

[0055] In some other embodiments, the fourth through hole 221 may also consist of only the first sub-through hole 2211 and the second sub-through hole 2212.

[0056] Example 4: Based on Example 1, the outer surface of the positioning shell 31 in the positioning mechanism 3 of this example has an external thread, and the inner surface of the fourth through hole 221 has an internal thread. The positioning mechanism 3 and the fourth through hole 221 are connected by threads, and the outer surface of the closed end 3111 is provided with a drive groove. This structure allows the positioning mechanism to be fixed in the fourth through hole, which is conducive to the smooth movement of the positioning bead located inside the positioning mechanism. The drive groove cooperates with a screwdriver or wrench to transmit the rotational force to the positioning shell, which is conducive to screwing the positioning mechanism into / out of the fourth through hole.

[0057] Example 5: Based on Example 1, the connector of the dynamic blood pressure monitor described in this example has a baffle 14 between its first fastening end 12 and first connecting end 13. When the first fastening end 12 is inserted into the third through hole 212, the baffle 14 abuts against the port of the second fastening end 22 of the female connector 2.

[0058] In this embodiment, a baffle is provided between the first fastening end and the first connecting end. When the first fastening end is inserted into the third through hole, on the one hand, due to the blocking effect of the port of the second fastening end, the baffle can limit the insertion length of the first fastening end. When the baffle and the port of the second fastening end abut, the first fastening end can no longer be inserted into the third through hole. On the other hand, when the baffle and the port of the second fastening end abut, it can ensure that the third annular groove on the first fastening end reaches the position of the fourth through hole, thereby allowing the positioning bead to enter the third annular groove, so as to achieve a firm connection between the male connector and the female connector.

[0059] Example 6: Based on Example 1, with reference to Figure 1 , Figure 2 and Figure 5The connector of the dynamic blood pressure monitor described in this embodiment has a second fastening mechanism comprising planes T1, T2, T3, and T4, and arc surfaces C1, C2, C3, and C4 disposed on the outer surface of the second fastening end 22. Planes T1, T2, T3, and T4 are arranged sequentially. Planes T1, T2, T3, and T4 have flat surfaces and are parallel to the axis of the second fastening end 22. Arc surfaces C1, C2, C3, and C4 have continuous curvature. 1. Plane T2, arc surface C2, plane T3, arc surface C3 and plane T4 smoothly transition at the connection to form a continuous surface, which becomes the outer surface of the second fastening end 22. There are three fourth through holes 221 and three positioning mechanisms 3. The three fourth through holes 221 are evenly distributed along the circumference of the second fastening end 22 and are located on plane T1, plane T2 and plane T4 respectively. The second fastening mechanism also includes two slots 223. The direction of the slots 223 is perpendicular to the axis of the second fastening end 22. The two slots are set in opposite positions and are located on plane T1 and plane T3 respectively.

[0060] The second fastening mechanism in this embodiment has a slot on the outer surface of the second fastening end. By cooperating with the protrusion or buckle in the airway interface of the ambulatory blood pressure monitor, the female connector can be fastened to the airway interface of the ambulatory blood pressure monitor. At the same time, the second fastening mechanism has spaced-connected flat and arc surfaces on the outer surface of the second fastening end, which helps to guide the male connector to be correctly inserted into the female connector and ensures that the slot and the protrusion or buckle are aligned. That is, the spaced-connected flat and arc surfaces on the outer surface of the second fastening end 22 have a foolproof function, thereby improving the efficiency of inserting the female connector into the airway interface of the ambulatory blood pressure monitor, making the insertion process fast and accurate, and preventing the occurrence of incorrect operation.

[0061] This application also includes an ambulatory blood pressure monitor, which includes the connector of the ambulatory blood pressure monitor described in any of the foregoing embodiments. The beneficial effects of the ambulatory blood pressure monitor with the connector of the ambulatory blood pressure monitor described in any of the foregoing embodiments will not be repeated here.

[0062] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A connector for an ambulatory blood pressure monitor, characterized in that, The connector includes a male connector, a female connector, and a positioning mechanism; The male connector includes a first through hole, and the male connector includes a first fastening end and a first connecting end. A limit mechanism is provided on the first fastening end, and the first connecting end is connected to the external air tube of the dynamic blood pressure monitor. The female connector includes a second fastening end and a second connecting end. The female connector has a stepped through hole inside, which includes a second through hole and a third through hole. The diameter of the second through hole is smaller than the diameter of the third through hole. The second fastening end includes at least one fourth through hole, which penetrates the wall of the third through hole. The first fastening end is inserted into the third through hole. The second fastening end includes a second fastening mechanism for fixing the female connector to the airway interface of the dynamic blood pressure monitor. The second connecting end is connected to the internal air tube of the dynamic blood pressure monitor. The positioning mechanism is disposed in the fourth through hole, and the positioning mechanism restricts the movement of the limiting mechanism by cooperating with the limiting mechanism.

2. The connector for the ambulatory blood pressure monitor as described in claim 1, characterized in that, The positioning mechanism includes a cylindrical positioning shell, a spring, and a positioning bead. The positioning shell has an internal cavity with an open end and a closed end. One end of the spring is connected to the bottom of the cavity, and the other end is connected to the positioning bead. The size of the positioning bead matches the size of the opening of the cavity. When the spring is in its natural state, part of the positioning bead is located inside the cavity, and the other part is located outside the cavity. The positioning bead restricts the movement of the limiting mechanism by cooperating with the limiting mechanism.

3. The connector for the ambulatory blood pressure monitor as described in claim 2, characterized in that, The closed end of the receiving cavity is provided with an exhaust hole. The fourth through hole includes a first sub-through hole and a second sub-through hole. The diameter of the first sub-through hole is smaller than the diameter of the second sub-through hole. The open end is located at the end of the first sub-through hole, and the closed end is located at the end of the second sub-through hole. A portion of the outer surface of the positioning shell is in contact with the inner wall of the first sub-through hole. The diameter of the second sub-through hole is larger than the diameter of the closed end.

4. The connector for the ambulatory blood pressure monitor as described in claim 1, characterized in that, The limiting mechanism includes a third annular groove disposed on the outer surface of the first fastening end, and the positioning mechanism restricts the movement of the limiting mechanism by cooperating with the third annular groove.

5. The connector for the ambulatory blood pressure monitor as described in claim 1, characterized in that, A baffle is provided between the first fastening end and the first connecting end. When the first fastening end is inserted into the third through hole, the baffle abuts against the port of the second fastening end of the female connector.

6. The connector for the ambulatory blood pressure monitor as described in claim 1, characterized in that, The second fastening end is provided with a first sealing mechanism, and the first sealing mechanism is disposed on the outer wall of the third through hole; and / or A second sealing mechanism is provided between the first fastening end and the third through hole, and the second sealing mechanism is located between the second through hole and the fourth through hole; and / or A third sealing mechanism is provided between the positioning mechanism and the fourth through hole.

7. The connector for the ambulatory blood pressure monitor as described in claim 6, characterized in that, The first sealing mechanism includes at least one pair of first annular grooves and a first sealing ring, wherein the first annular grooves are disposed on the outer surface of the second fastening end, and the first sealing rings are located within the annular grooves; The second sealing mechanism includes at least one pair of second annular grooves and a second sealing ring. The second annular groove is disposed on the inner wall of the third through hole, and the second sealing ring is located inside the second annular groove. The third sealing mechanism includes at least one pair of third annular grooves and a third sealing ring. The third annular grooves are disposed on the inner wall of the fourth through hole, and the third sealing rings are located inside the third annular grooves.

8. The connector for the ambulatory blood pressure monitor as described in claim 1, characterized in that, The second fastening mechanism includes at least one slot and at least one plane disposed on the outer surface of the second fastening end. The direction of the slot is perpendicular to the axis of the second fastening end, and the plane is parallel to the axis of the second fastening end. The slot is disposed on the plane.

9. The connector for the ambulatory blood pressure monitor as described in claim 8, characterized in that, The second fastening mechanism includes four arc surfaces and four planes disposed on the outer surface of the second fastening end. The four planes and the four arc surfaces are arranged at intervals along the circumference of the second fastening end. There are three fourth through holes and three positioning mechanisms. The fourth through holes are disposed on the planes and are evenly distributed along the circumference of the second fastening end. There are two slots, and the two slots are disposed in opposite positions.

10. A dynamic blood pressure monitor, characterized in that, Includes the connector of the ambulatory blood pressure monitor as described in any one of claims 1-9.

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