Flow channel structure for blood pressure measurement
By designing the thin-film airbag structure and airflow channel, the problems of large volume and insufficient flexibility caused by the rigidity of the runner in traditional blood pressure measurement equipment are solved, and the smoothness of gas flow and the portability and accuracy of measurement are achieved.
Patent Information
- Application Number
- CN202421435408.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In traditional watch-type blood pressure measurement equipment, the rigid flow path between the air pump and the airbag leads to a large size and lack of flexibility, which affects the portability and accuracy of the measurement.
A thin film airbag structure is designed, with the first and second air ports arranged at both ends of the airbag, respectively, and connected with the airflow channel to form a channel for free in and out of gas. The airflow channel can be changed synchronously with deformation to maintain the smooth flow of gas. At the same time, the air pressure sensor is in communication with the airflow channel to detect the gas pressure.
The gas circulation of thin-film airbags under different deformation environments is realized, and the measurement accuracy and portability are maintained, avoiding the problems of excessive size and insufficient flexibility of traditional equipment.
Smart Images
Figure CN222899119U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of blood pressure measurement, and in particular to a flow channel structure for blood pressure measurement. Background Art
[0002] When blood flows in blood vessels, the lateral pressure on the blood vessel wall is called blood pressure. Blood pressure usually refers to arterial blood pressure or systemic blood pressure, which is an important vital sign. Blood pressure measurement is the main means of evaluating blood pressure levels, diagnosing hypertension and observing the efficacy of antihypertensive treatment. Accurately measuring blood pressure is the basis for primary care hypertension management. The organic combination of different blood pressure measurement methods is an important factor in improving the diagnosis and management of hypertension.
[0003] At present, the equipment used for blood pressure measurement is more and more convenient, so there are many watch-type blood pressure measuring devices on the market. In the watch-type blood pressure measuring devices, the flow channel between the air pump and the air bag is mostly formed by rigid materials. The flow channel space formed by the rigid material will result in a larger volume and occupy a larger space. When the flow channel between the air pump and the air bag is longer, the overall structure will become more bulky and lack flexibility. Utility Model Content
[0004] Based on this, it is necessary to provide a flow channel structure for blood pressure measurement in order to address the problem that the flow channel between the air pump and the air bag in traditional watch-type blood pressure measurement devices is mostly formed of rigid materials. The flow channel space formed by the rigid material will result in a larger volume and occupy a larger space. When the flow channel between the air pump and the air bag is longer, the overall structure will become more bulky and lack flexibility.
[0005] The present application provides a flow channel structure for blood pressure measurement, comprising:
[0006] A film airbag is provided with an air flow channel inside, a first air port is opened at one end of the film airbag; the first air port is connected to the air flow channel, and a second air port is opened at the other end of the film airbag; the second air port is connected to the air flow channel
[0007] An air pressure sensor is fixedly mounted on the film airbag. A third air port is also provided on the film airbag. The air pressure sensor is communicated with the third air port, and the third air port is communicated with the air flow channel.
[0008] The third air port is disposed between the first air port and the second air port.
[0009] The present application relates to a flow channel structure for blood pressure measurement, in which a first air port and a second air port are respectively arranged at both ends of a thin film airbag, so that the first air port and the second air port are connected to an air flow channel inside the thin film airbag to form a complete channel for free inflow and outflow of gas, and the air flow channel can change synchronously with the deformation of the thin film airbag, so that the thin film airbag can maintain smooth gas flow under different deformation working environments, and the air pressure sensor connected to the third air port is used to detect the gas pressure inside the air flow channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 A schematic structural diagram of a flow channel structure for blood pressure measurement provided in one embodiment of the present application.
[0011] Figure 2 This is a schematic diagram of the structure of a flow channel structure for blood pressure measurement provided in an embodiment of the present application after removing the air pressure sensor.
[0012] Figure 3 A schematic diagram of the structure of channel branches in a flow channel structure for blood pressure measurement provided in one embodiment of the present application.
[0013] Figure 4 A schematic diagram of the positional relationship between a first support plate and a second support plate in a flow channel structure for blood pressure measurement provided in one embodiment of the present application.
[0014] Figure 5 A schematic structural diagram of a first slot body in a flow channel structure for blood pressure measurement provided in one embodiment of the present application.
[0015] Figure 6 A schematic diagram of the structure of a second slot body in a flow channel structure for blood pressure measurement provided in one embodiment of the present application.
[0016] Reference numerals:
[0017] 11. film airbag; 111. air flow channel; 111a. channel branch; 112. first film;
[0018] 112a, first air port; 112b, second air port; 112c, third air port; 113, second film;
[0019] 114, airway sheet; 12, air pressure sensor; 13, support member; 131, first support plate;
[0020] 132, second support plate; 16, first tank body;
[0021] 17. Second trough body; 18. First flow opening; 19. Second flow opening; 20. Third flow opening. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0023] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, the flow channel structure for blood pressure measurement includes a thin film airbag 11 and an air pressure sensor 12 .
[0024] The film airbag 11 has an air flow channel 111 disposed therein. A first air port 112a is provided at one end of the film airbag 11. The first air port 112a is communicated with the air flow channel 111. A second air port 112b is provided at the other end of the film airbag 11. The second air port 112b is communicated with the air flow channel 111.
[0025] The air pressure sensor 12 is fixedly mounted on the film airbag 11 . A third air port 112 c is also provided on the film airbag 11 . The air pressure sensor 12 is communicated with the third air port 112 c . The third air port 112 c is communicated with the air flow channel 111 .
[0026] The third air port 112 c is disposed between the first air port 112 a and the second air port 112 b .
[0027] Specifically, the film airbag 11 is flat and has a certain flexibility and can be bent or curved. The material of the film airbag 11 is a relatively soft polymer material such as PI or PE. The first air port 112a and the second air port 112b are respectively arranged at the two ends of the airflow channel 111, and the first air port 112a, the second air port 112b and the airflow channel 111 constitute a channel for gas circulation, and the first air port 112a and the second air port 112b are used for gas circulation in and out; the third air port 112c is arranged between the first air port 112a and the second air port 112b, and the third air port 112c is connected to the airflow channel 111, and the air pressure sensor 12 is connected to the third air port 112c.
[0028] In this embodiment, a first air port 112a and a second air port 112b are respectively provided at both ends of the thin film airbag 11, so that the first air port 112a and the second air port 112b are connected to the air flow channel 111 inside the thin film airbag 11 to form a complete channel for free flow of gas, and the air flow channel 111 can change synchronously with the deformation of the thin film airbag 11, so that the thin film airbag 11 can maintain smooth gas flow under different deformation working environments, and the air pressure sensor 12 connected to the third air port 112c is used to detect the gas pressure inside the air flow channel 111.
[0029] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, the film airbag 11 includes a first film 112 , a second film 113 and an airway sheet 114 .
[0030] The structure of the second film 113 is the same as that of the first film 112 .
[0031] The airway sheet 114 is disposed between the first film 112 and the second film 113 .
[0032] The first film 112 , the second film 113 , and the airway sheet 114 are fixed by heat pressing to form an airflow channel 111 .
[0033] Specifically, the thickness of the first film 112 and the second film 113 are both 0.1 mm, the thickness of the airway sheet 114 is 0.2 mm, the contour shape of the first film 112, the contour shape of the second film 113 and the contour shape of the airway sheet 114 are the same, and the first film 112, the second film 113 and the airway sheet 114 are all formed by laser cutting; the first film 112, the second film 113 and the airway sheet 114 can also be formed by mold cutting.
[0034] In this embodiment, the edges of the first film 112, the second film 113 and the airway sheet 114 are placed overlapping, wherein the airway sheet 114 is placed between the first film 112 and the second film 113, and then the first film 112, the second film 113 and the airway sheet 114 are pressed together through a hot pressing process to form an airflow channel 111.
[0035] like Figure 2 As shown, in one embodiment of the present application, the first air vent 112 a , the second air vent 112 b , and the third air vent 112 c are all opened on the first film 112 .
[0036] In this embodiment, before the first film 112 , the second film 113 and the airway sheet 114 are pressed together, the first film 112 needs to be laser cut or cut to form the first air port 112 a , the second air port 112 b and the third air port 112 c .
[0037] like Figure 2 As shown, in one embodiment of the present application, the third air port 112c is disposed close to the second air port 112b.
[0038] like Figure 3 As shown, in one embodiment of the present application, the middle portion of the air flow channel 111 has a plurality of channel branches 111 a arranged in parallel.
[0039] Specifically, a plurality of channel branches 111 a are disposed in the middle of the airflow channel 111 , and the plurality of channel branches 111 a are disposed in parallel and are interconnected.
[0040] In this embodiment, the middle part of the airflow channel 111 is arranged as a plurality of parallel and interconnected channel branches 111a to increase the gas content in the overall airflow channel 111, and the parallel arrangement of the plurality of channel branches 111a can structurally increase the structural flexibility of the film airbag 11, and can also increase the smoothness of the gas flow in the airflow channel 111, thereby preventing the film airbag 11 from closing the airflow channel 111 when being bent or curved.
[0041] like Figure 2 As shown, in one embodiment of the present application, the thin film microfluidic solution for a small micro blood pressure measuring device further includes a support member 13. The support member 13 is fixedly connected to the second film 113. The support member 13 is arranged corresponding to the first air port 112a, the second air port 112b and the third air port 112c.
[0042] In this embodiment, the support member 13 is arranged on the second film 113, and the support member 13 is arranged corresponding to the first air port 112a, so as to provide rigid support for the airflow when it enters and exits the airflow channel 111 from the first air port 112a. The support member 13 is also arranged corresponding to the second air port 112b and the third air port 112c, so as to provide rigid support for the airflow when it enters and exits the airflow channel 111 from the second air port 112b and to provide rigid support for the airflow when it flows to the third air port 112c, thereby maintaining the smoothness of the airflow.
[0043] like Figure 4 As shown, in one embodiment of the present application, the support member 13 includes a first support plate 131 and a second support plate 132 .
[0044] The first support plate 131 is disposed close to the first air port 112a. The first support plate 131 is fixedly connected to the second film 113. The first support plate 131 is disposed corresponding to the first air port 112a.
[0045] The second support plate 132 is disposed near the second air port 112b. The second support plate 132 is fixedly connected to the second film 113. The first support plate 131 is disposed corresponding to the second air port 112b and the third air port 112c.
[0046] In this embodiment, the first support plate 131 is fixed on the second film 113, and the first support plate 131 is arranged corresponding to the first air port 112a to maintain the flatness of the non-deformation area at the first air port 112a and provide strength support; the second support plate 132 is used to provide strength support to the second air port 112b and the third air port 112c to maintain the flatness of the non-deformation area at the second air port 112b and the third air port 112c.
[0047] like Figure 5 and Figure 6 As shown, in one embodiment of the present application, the film airbag 11 includes a first film 112 and a second film 113 .
[0048] The first film 112 is provided with a first groove 16 .
[0049] A second groove 17 is formed on the second film 113 .
[0050] The structure of the first film 112 is the same as that of the second film 113. The first film 112 and the second film 113 are connected by heat-pressing sealing. The first groove body 16 and the second groove body 17 are connected to form an air flow channel 111.
[0051] Specifically, the first groove body 16 opened on the first film 112 and the second groove body 17 opened on the second film 113 can be of the same shape or of different shapes. When the first groove body 16 and the second groove body 17 have the same shape, the first groove body 16 and the second groove body 17 can be completely fitted in contour to form the airflow channel 111, or the close parts of the first groove body 16 and the second groove body 17 are connected to form the airflow channel 111.
[0052] In this embodiment, the first groove body 16 is formed by etching or molding on the first film 112, and the second groove body 17 is formed by etching or molding on the second film 113. The first groove body 16 is connected to the second groove body 17 to form a complete airflow channel 111.
[0053] like Figure 5 As shown, in one embodiment of the present application, a first flow opening 18 is provided at one end of the first film 112. The first flow opening 18 is communicated with the first slot 16. A second flow opening 19 is provided at the other end of the first film 112. The second flow opening 19 is communicated with the second slot 17. A third flow opening 20 is also provided on the first film 112. The third flow opening 20 is arranged between the first flow opening 18 and the second flow opening 19.
[0054] In this embodiment, the first flow port 18 is connected to the first groove body 16 and the second flow port 19 is connected to the second groove body 17 so that the air flow channel 111 can form a complete gas flow; the third flow port 20 is arranged between the first flow port 18 and the second flow port 19, and the third flow port 20 is arranged close to the second flow port 19, the third flow port 20 is connected to the second groove body 17, and the third flow port 20 is used to connect with the air pressure sensor 12.
[0055] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0056] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.
Claims
1. A flow channel structure for blood pressure measurement, characterized in that: The flow channel structure for blood pressure measurement comprises: A film airbag is provided with an air flow channel inside, a first air port is opened at one end of the film airbag; the first air port is communicated with the air flow channel, and a second air port is opened at the other end of the film airbag; the second air port is communicated with the air flow channel; An air pressure sensor is fixedly mounted on the film airbag. A third air port is also provided on the film airbag. The air pressure sensor is communicated with the third air port, and the third air port is communicated with the air flow channel. The third air port is disposed between the first air port and the second air port.
2. The flow channel structure for blood pressure measurement according to claim 1, characterized in that: The film airbag comprises: First film; a second film, wherein the structure of the second film is the same as that of the first film; An airway sheet, disposed between the first film and the second film; The first film, the second film and the airway sheet are fixed by heat pressing to form an airflow channel.
3. The flow channel structure for blood pressure measurement according to claim 2, characterized in that: The first air port, the second air port and the third air port are all opened on the first film.
4. The flow channel structure for blood pressure measurement according to claim 3, characterized in that: The third air port is disposed close to the second air port.
5. The flow channel structure for blood pressure measurement according to claim 4, characterized in that: The middle part of the air flow channel is provided with a plurality of channel branches arranged in parallel.
6. The flow channel structure for blood pressure measurement according to claim 5, characterized in that: The thin film microfluidic solution for a small micro blood pressure measuring device also includes a support member, which is fixedly connected to the second thin film and is arranged corresponding to the first air port, the second air port and the third air port.
7. The flow channel structure for blood pressure measurement according to claim 6, characterized in that: The support member comprises: a first support plate, disposed close to the first air port, the first support plate being fixedly connected to the second film, and the first support plate being disposed corresponding to the first air port; The second support plate is arranged close to the second air port, the second support plate is fixedly connected to the second film, and the first support plate is arranged corresponding to the second air port and the third air port.
8. The flow channel structure for blood pressure measurement according to claim 1, characterized in that: The film airbag comprises: A first film, wherein a first groove is formed on the first film; a second film, wherein a second groove is formed on the second film; The structure of the first film is the same as that of the second film. The first film and the second film are connected by heat-pressing sealing. The first groove body and the second groove body are connected to form an air flow channel.
9. The flow channel structure for blood pressure measurement according to claim 8, characterized in that: A first flow opening is provided at one end of the first film, and the first flow opening is connected to the first groove body; a second flow opening is provided at the other end of the first film, and the second flow opening is connected to the second groove body; a third flow opening is also provided on the first film, and the third flow opening is arranged between the first flow opening and the second flow opening.