An edema measurement sensor assembly
By setting a pressure sensor and measuring gear on the measuring ruler of the edema measurement sensor assembly, the problem of low measuring accuracy of the tape measure in the prior art is solved, and a higher accuracy measurement of edema is achieved.
Patent Information
- Application Number
- CN202310219059.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-09
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2043-03-09
AI Technical Summary
In the prior art, when measuring the degree of edema with tape measure, it is difficult to ensure measurement accuracy depending on the feel pressure.
An edema measurement sensor assembly is designed, including a housing, a measuring ruler, an unlocking unit, a locking unit and a measuring unit. A pressure sensor is provided on the measuring ruler, and the contact length of the measuring ruler and the measuring part is detected by measuring gears and angle sensors.
The pressure sensor ensures that the pressure between the measuring ruler and the measuring part is constant during each measurement, and the rotation angle of the measuring gear corresponds one by one to the length of the measuring ruler, which improves the accuracy of measuring the degree of edema.
Smart Images
Figure CN115956901B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of dimension measurement, and more specifically to an edema measurement sensor assembly. Background Art
[0002] Changes in the dimensions of the calf, ankle, and arm are an intuitive indicator of the degree of edema in a patient. An edema measurement device can be used to measure the dimensions of the calf, ankle, and arm of an edematous patient. In the prior art, a tape measure is clinically used to measure the degree of edema in a patient. Taking the measurement of the degree of edema in the arm as an example, the measurement method in the prior art is described as follows: First, a mark is drawn on the upper arm of the arm, and the tape measure is used to measure at the marked position. At this time, the tape measure is wrapped around the arm, and the degree of fit between the tape measure and the arm is felt by the pressure of the hand. Then, the value on the tape measure is read. When measuring the next day, the measurement is carried out again at the marked position, and the degree of fit between the tape measure and the arm is still determined by the pressure of the hand, and then the value on the tape measure is read. Under the above measurement method, since it is necessary to rely on the hand feeling to perceive the contact force between the tape measure and the arm to determine the degree of fit between the tape measure and the arm, the measurement accuracy is difficult to guarantee. Summary of the Invention
[0003] The purpose of the present invention is to provide an edema measurement sensor assembly, which is used to solve the problem of low measurement accuracy when manually using a tape measure to measure the degree of edema.
[0004] The technical solution adopted by the present invention to solve its technical problems is: An edema measurement sensor assembly includes a housing, a measuring ruler, an unlocking unit, a locking unit, and a measuring unit. The front of the housing has a display screen. One end of the measuring ruler is fixedly connected to the right side wall of the housing. The front of the measuring ruler has a pressure sensor. The back of the other end of the measuring ruler has a buckle. There is a jack on the right side wall of the housing. The other end of the measuring ruler is used to extend into the jack. The locking unit is arranged in the jack to realize the locking and fixing of the other end of the measuring ruler and the housing. The unlocking unit is arranged on the housing to release the locking of the locking unit on the measuring ruler. The measuring unit includes a measuring gear and an angle sensor. The measuring gear is rotatably installed in the housing. When the other end of the measuring ruler extends into the jack, the buckle meshes with the measuring gear. The angle sensor is used to detect the rotation angle of the measuring gear. The rotation angle of the measuring gear corresponds to the length of the measuring ruler in contact with the measuring part. The display screen is used to display the pressure sensed by the pressure sensor and the edema measurement result.
[0005] Further, there are two pressure sensors arranged on the front of the measuring ruler.
[0006] Further, the locking unit includes a locking rod, locking teeth and a locking spring. An installation cavity communicating with the jack is provided in the housing. The locking rod is located in the installation cavity. The lower end of the locking rod is hinged to the housing. The middle part of the locking rod has the locking teeth. The locking spring is arranged between the upper end of the locking rod and the inner wall of the installation cavity. Under the action of the locking spring, the locking teeth extend into the jack.
[0007] Further, an ear plate is provided in the installation cavity. The lower end of the locking rod has a protrusion, and the protrusion is hinged to the ear plate.
[0008] Further, the unlocking unit includes an unlocking rod. The unlocking rod is slidably connected to the housing. A locking spring is provided between the unlocking rod and the housing. The other end of the unlocking rod faces the locking rod. Under the action of the locking spring, one end of the unlocking rod extends out of the housing, and the other end of the unlocking rod contacts the locking rod.
[0009] Further, a sliding sleeve is provided in the housing. The other end of the unlocking rod is a sliding rod. The sliding rod penetrates into the sliding sleeve and is slidably connected to the sliding sleeve. One end of the locking spring is fixedly connected to the end of the sliding sleeve, and the other end of the locking spring is fixedly connected to the other end of the unlocking rod.
[0010] Further, the measuring ruler is of a double-layer structure, including an outer layer of the measuring ruler and an inner layer of the measuring ruler. The inner layer of the measuring ruler is made of silica gel material or hard sponge material and is used to contact the measuring part. The outer layer of the measuring ruler is made of plastic material, and the buckle is arranged on the outer layer of the measuring ruler.
[0011] The beneficial effects of the present invention are as follows: By providing the pressure sensor on the measuring ruler, the positive pressure between the measuring ruler and the measuring part is detected, so as to ensure that the pressure between the measuring ruler and the measuring part is the same each time when measuring the degree of edema. The setting of the measuring gear drives the rotation of the measuring gear when the other end of the measuring ruler is inserted into the jack. The rotation angle of the measuring gear corresponds one by one to the length of the measuring ruler, and the length of the measuring ruler corresponds one by one to the degree of edema. By setting the pressure sensor, the pressure between the measuring ruler and the measuring part is ensured to be constant, thereby ensuring the measurement accuracy of the degree of edema. Description of the Drawings
[0012] Figure 1 is a three-dimensional view of the present invention;
[0013] Figure 2 is a front view of the present invention;
[0014] Figure 3 is a top view of the present invention;
[0015] Figure 4 is a rear view of the present invention;
[0016] Figure 5Schematic diagram of the usage state of the present invention;
[0017] Figure 6 is Figure 3 the A-A cross-sectional view in
[0018] Figure 7 is Figure 3 the B-B cross-sectional view in
[0019] Figure 8 is Figure 4 the C-C cross-sectional view in
[0020] Figure 9 Schematic diagram of the top view position of the measuring gear, measuring ruler, and locking rod;
[0021] Figure 10 is Figure 8 the partial enlarged view at D in
[0022] Figure 11 is Figure 9 the E-E cross-sectional view in
[0023] In the figure: 1 housing, 11 jack, 12 first display screen, 13 second display screen, 14 installation cavity, 15 sliding sleeve, 16 positioning spring, 17 ear plate, 2 measuring ruler, 21 insertion end, 22 buckle, 23 inner layer of the measuring ruler, 24 outer layer of the measuring ruler, 3 pressure sensor, 4 unlocking rod, 41 sliding rod, 5 measuring part, 6 measuring gear, 61 wheel carrier, 7 locking rod, 71 locking teeth, 72 protrusion, 73 locking spring. Specific embodiments
[0024] As Figures 1 to 11 shown, the present invention includes a housing 1, a measuring ruler 2, a pressure sensor 3, an unlocking unit, a locking unit, and a measuring unit. The following will describe the present invention in detail with reference to the accompanying drawings.
[0025] As Figures 1 to 11 shown, an edema measurement sensor assembly includes a housing 1, a measuring ruler 2, an unlocking unit, a locking unit, and a measuring unit. The locking unit is used to lock and fix the measuring ruler 2 to the housing 1, thereby binding the measuring part between the measuring ruler 2 and the housing 1. The unlocking unit is used to unlock the locking effect of the locking unit on the measuring ruler 2 to facilitate the separation of the measuring ruler 2 from the housing 1. The measuring unit is used to detect the positional relationship between the measuring ruler 2 and the housing 1, and inversely calculate the length of the measuring ruler 2 that has not extended into the housing 1 by detecting the relative position between the measuring ruler 2 and the housing 1 (the length of the measuring ruler 2 extending into the housing 1), thereby realizing the measurement of the degree of edema.
[0026] As Figures 1 to 4As shown, the housing 1 is in the shape of a cuboid or a circle. The front of the housing 1 has a first display screen 12 and a second display screen 13. One end of the measuring ruler 2 is fixedly connected to the right side wall of the housing 1. The front of the measuring ruler 2 has a pressure sensor 3, and there are two pressure sensors arranged on the front of the measuring ruler 2. As Figure 4 shown, the back of the other end of the measuring ruler 2 has evenly arranged buckles 22, as Figure 6 shown, the right side wall of the housing 1 has a jack 11. The other end of the measuring ruler 2 is used to extend into the jack 11. A locking unit is arranged in the housing 1 to lock and fix the other end of the measuring ruler 2 and the housing 1. As Figure 11 shown, the measuring ruler 2 is a double-layer structure, including an outer layer of the measuring ruler 24 and an inner layer of the measuring ruler 23. The inner layer of the measuring ruler 23 is made of silica gel or hard sponge material and is used to contact the measuring part. The outer layer of the measuring ruler 24 is made of plastic material and is used to maintain the cross-sectional shape of the measuring ruler 2 and prevent deformation. The buckle 22 is arranged on the outer layer of the measuring ruler 24. The shape of the housing 1 can also be other structural forms.
[0027] As Figure 7 、 Figure 8 shown, the locking unit includes a locking rod 7, locking teeth 71 and a locking spring 73. The housing 1 has an installation cavity 14 communicating with the jack 11. The locking rod 7 is located in the installation cavity 14. The installation cavity 14 has an ear plate 17. The lower end of the locking rod 7 has a protrusion 72, and the protrusion 72 is hinged to the ear plate 17 to realize the hinge connection between the lower end of the locking rod 7 and the housing 1. The middle of the locking rod 7 has evenly arranged locking teeth 71. The locking spring 73 is arranged between the upper end of the locking rod 7 and the inner wall of the installation cavity 14. Under the action of the locking spring 73, the locking teeth 71 extend into the jack 11. The distance between two adjacent locking teeth 71 is the same as the width of the buckle 22. After the other end of the measuring ruler 2 extends into the jack 11, under the action of the locking spring 73, the buckle 22 extends into the space between two adjacent locking teeth 71 to realize the relative fixation between the locking rod 7 and the housing 1. At this time, the length of the other end of the measuring ruler 2 extending into the jack 11 is fixed. The other end of the measuring ruler 2 is a tapered insertion end 21 to facilitate easy extension into the jack 11. When in use, as Figure 5As shown, the measuring ruler 2 is wound around the measuring part 5, and the other end of the measuring ruler 2 is inserted into the jack 11. At this time, the measuring part 5 is surrounded by the measuring ruler 2, and the measuring part 5 contacts the inner layer 23 of the measuring ruler of the measuring ruler 2. Since the measuring ruler 2 contacts the measuring part 5 and the right side wall of the housing 1 contacts the measuring part 5, the sum of the length of the measuring ruler 2 that does not extend into the jack 11 and the distance between the intersection of one end of the measuring ruler 2 and the housing 1 and the jack 11 can be used as the circumferential dimension of the measuring part 5. The distance between the intersection of one end of the measuring ruler 2 and the housing 1 and the jack 11 is a fixed value D, and the length of the measuring ruler 2 that does not extend into the jack 11 is a variable. The length of the measuring ruler 2 that does not extend into the jack 11 can be deduced inversely through the length of the measuring ruler 2 extending into the housing 1. The total length L of the measuring ruler 2 is a fixed value. Assuming that the length of the measuring ruler 2 extending into the housing 1 is L1, then the length L2 of the measuring ruler 2 that does not extend into the housing 1 is L - L1. The length L1 of the measuring ruler 2 extending into the housing 1 is detected by the measuring unit. The first display screen 12 is used to display the pressure sensed by the pressure sensor 3 and record the pressure value.
[0028] The unlocking unit is arranged on the housing 1 to release the locking of the locking unit on the measuring ruler 2. As Figure 7 , Figure 8 and Figure 10 shown, the unlocking unit includes an unlocking rod 4. The unlocking rod 4 is slidably connected to the housing 1, and there is a positioning spring 16 between the unlocking rod 4 and the housing 1. The other end of the unlocking rod 4 faces the locking rod 7. Under the action of the positioning spring 16, one end of the unlocking rod 4 extends out of the housing 1, and the other end of the unlocking rod 4 contacts the locking rod 7. There is a sliding sleeve 15 in the housing 1. The other end of the unlocking rod 4 is a sliding rod 41. The outer diameter of the sliding rod 41 is smaller than the outer diameter of the unlocking rod 4. The sliding rod 41 penetrates into the sliding sleeve 15 and is slidably connected to the sliding sleeve 15. One end of the positioning spring 16 is fixedly connected to the end of the sliding sleeve 15, and the other end of the positioning spring 16 is fixedly connected to the other end of the unlocking rod 4, and the positioning spring 16 is sleeved on the sliding rod 41. When pressing one end of the unlocking rod 4, the unlocking rod 4 can be driven to move relative to the housing 1, so that the other end of the unlocking rod 4 presses the upper end of the locking rod 7, and then the locking rod 7 is driven to swing around the hinge point until the locking tooth 71 moves out of the jack. At this time, the locking tooth 71 is separated from the buckle 22 at the other end of the measuring ruler 2, thereby realizing the release of the locking of the measuring ruler.
[0029] The measuring unit includes a measuring gear 6 and an angle sensor. The measuring gear 6 is rotatably installed in the housing 1 through a wheel frame 61. As Figure 9As shown, when the other end of the measuring ruler 2 extends into the jack 11, the buckle 22 meshes with the measuring gear 6, thereby driving the rotation of the measuring gear 6. The angle sensor is used to detect the rotation angle of the measuring gear 6. The rotation angle of the measuring gear 6 corresponds to the length of the measuring ruler 2 in contact with the measuring part 5. The second display screen 13 is used to display the edema measurement result. Edema measurement result = total length L of the measuring ruler 2 - length L1 of the measuring ruler 2 extending into the jack 11 + distance from the contact point of one end of the measuring ruler 2 with the housing 1 to the jack 11. When the length of the other end of the measuring ruler 2 extending into the jack 11 is different, the rotation angle of the measuring gear 6 is different. Therefore, the rotation angle of the measuring gear 6 and the length of the measuring ruler 2 inside or outside the jack 11 are in one-to-one correspondence. The measuring ruler 2 outside the jack 11 contacts the measuring part 5, representing the edema degree of the measuring part 5. The measuring gear 6 and the other end of the measuring ruler 2 form a gear and rack fit. The circumferential length of the measuring gear 6 corresponding to the rotation angle of the measuring gear 6 is the length of the measuring ruler 2 extending into the housing 1. An inclined surface can be provided on one side wall of the locking tooth 71 so that when the measuring ruler 2 extends into the jack 11, the buckle 22 can enter between the locking teeth 71.
[0030] Through the setting of the pressure sensor on the measuring ruler, the present invention detects the positive pressure between the measuring ruler and the measuring part, thereby ensuring that the pressure between the measuring ruler and the measuring part is the same each time the edema degree is measured; through the setting of the measuring gear, when the other end of the measuring ruler is inserted into the jack, it drives the rotation of the measuring gear. The rotation angle of the measuring gear is in one-to-one correspondence with the length of the measuring ruler 2 extending into the housing 1, and the length of the measuring ruler 2 extending into the housing 1 is in one-to-one correspondence with the edema degree. By setting the pressure sensor, the pressure between the measuring ruler 2 and the measuring part is kept constant each time, thereby ensuring the measurement accuracy of the edema degree.
Claims
1. An edema measurement sensor assembly, characterized in that, It includes a housing, a measuring ruler, an unlocking unit, a locking unit and a measuring unit. The front of the housing has a display screen. One end of the measuring ruler is fixedly connected to the right side wall of the housing. The front of the measuring ruler has a pressure sensor. The back of the other end of the measuring ruler has a buckle. There is a jack on the right side wall of the housing. The other end of the measuring ruler is for extending into the jack. The locking unit is arranged in the jack for locking and fixing the other end of the measuring ruler and the housing. The unlocking unit is arranged on the housing for releasing the locking of the locking unit on the measuring ruler. The measuring unit includes a measuring gear and an angle sensor. The measuring gear is rotatably installed in the housing. When the other end of the measuring ruler extends into the jack, the buckle meshes with the measuring gear. The angle sensor is used to detect the rotation angle of the measuring gear. The rotation angle of the measuring gear corresponds to the length of the measuring ruler in contact with the measuring part. The display screen is used to display the sensed pressure of the pressure sensor and the edema measurement result; The locking unit includes a locking rod, locking teeth and a locking spring. There is an installation cavity in the housing that communicates with the jack. The locking rod is located in the installation cavity. The lower end of the locking rod is hinged to the housing. The middle of the locking rod has locking teeth. The locking spring is arranged between the upper end of the locking rod and the inner wall of the installation cavity. Under the action of the locking spring, the locking teeth extend into the jack; The unlocking unit includes an unlocking rod. The unlocking rod is slidably connected to the housing. There is a locking spring between the unlocking rod and the housing. The other end of the unlocking rod faces the locking rod. Under the action of the locking spring, one end of the unlocking rod extends out of the housing and the other end of the unlocking rod contacts the locking rod; There is a sliding sleeve in the housing. The other end of the unlocking rod is a sliding rod. The sliding rod passes through the sliding sleeve and is slidably connected to the sliding sleeve. One end of the locking spring is fixedly connected to the end of the sliding sleeve. The other end of the locking spring is fixedly connected to the other end of the unlocking rod; The measuring ruler is a double-layer structure, including an outer layer of the measuring ruler and an inner layer of the measuring ruler. The inner layer of the measuring ruler is made of silica gel or hard sponge material. The inner layer of the measuring ruler is for contacting the measuring part. The outer layer of the measuring ruler is made of plastic material. The buckle is arranged on the outer layer of the measuring ruler.
2. The edema measurement sensor assembly according to claim 1, characterized in that, There are two pressure sensors arranged on the front of the measuring ruler.
3. The edema measurement sensor assembly according to claim 1, characterized in that, There is an ear plate in the installation cavity. The lower end of the locking rod has a protrusion. The protrusion is hinged to the ear plate.
Citation Information
Patent Citations
Diseased joint swelling parameter detection device, method and system
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