Adjustable pressure sensor calibration fixture

Abstract

The utility model relates to medical instrument technical field, and disclose a kind of adjustable pressure sensor fixed calibration device, including vertical pole, still include: respectively set in the vertical pole outside pressure sensor body and infrared calibrator, and pressure sensor body and infrared calibrator are symmetrical design up and down, the outside of vertical pole is provided with two groups of clamping mechanism, and the fixed plate of being set in the vertical pole outside setting, the setting of the clamping mechanism of utility model can be installed in vertical pole by its internal structure with fixed plate, the position of fixed plate is adjusted simultaneously, by setting fixed plate, first rotary turntable, first clamping block and second clamping block cooperation, it can be installed in fixed plate with pressure sensor body, the angle of pressure sensor body can be adjusted simultaneously, infrared calibrator can utilize infrared radiation temperature measurement principle to calibrate the position of pressure sensor body.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an adjustable pressure sensor fixing and calibration device. Background Technology

[0002] Pressure sensors used in cardiac surgery convert the sensed pressure signal into an electrical signal based on physical phenomena such as piezoresistive effect, piezoelectric effect, or capacitance change. The signal is then amplified and filtered by a signal conversion circuit to ensure the accuracy and stability of the signal. Finally, the processed electrical signal is transmitted to medical equipment through an output interface for analysis and use by medical personnel.

[0003] During cardiac surgery, pressure sensors need to monitor changes in pressure within the heart chambers or blood vessels in real time. If the sensor position changes, the hemodynamic values ​​will also change, affecting the accuracy of monitoring. Therefore, an adjustable pressure sensor fixing and calibration device is needed to ensure that the pressure sensor is correctly positioned relative to the patient's heart, providing reliable reference data for clinical treatment. However, existing pressure sensors are usually fixed to the bed rail with tape. When the patient changes position, the tape needs to be replaced to fix the pressure sensor, which increases the workload and makes it difficult to ensure the stability of the pressure sensor position, which can lead to measurement errors. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable pressure sensor fixed calibration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable pressure sensor fixing and calibration device, including a support pole, and further comprising:

[0006] The pressure sensor body and the infrared calibrator are respectively installed on the outside of the pole, and the pressure sensor body and the infrared calibrator are designed symmetrically from top to bottom. Two sets of snap-fit ​​mechanisms are provided on the outside of the pole.

[0007] A fixing plate is set on the outside of the upright. A first rotating frustum is set on one side of the fixing plate. A first snap-fit ​​block is fixed on one side of the first rotating frustum. A second snap-fit ​​block is rotatably connected to the inner wall of the first snap-fit ​​block.

[0008] Preferably, the locking mechanism includes two sets of limiting rings that slide on the outside of the upright, and the outer side of the limiting rings is fixedly connected to one side of the fixing plate. The inner wall of the limiting ring is threaded with a first threaded rod, and the end of the first threaded rod away from the limiting ring is fixed with a first turntable. The end of the first threaded rod near the limiting ring is rotatably connected with a clamping block.

[0009] Preferably, the inner wall of the first snap-fit ​​block is rotatably connected to a second threaded rod arranged laterally, and the outer side of the second threaded rod is threadedly connected to the inner wall of the second snap-fit ​​block. A handle is fixed to the end of the second threaded rod away from the second snap-fit ​​block.

[0010] Preferably, a snap-fit ​​ring is slidably connected to the outer side of the upright, and a bracket is fixed to the outer side of the snap-fit ​​ring.

[0011] Preferably, the inner wall of the bracket is rotatably connected to a horizontally arranged rotating rod, and a connecting block is fixed to the outer side of the rotating rod, with the connecting block positioned at the center of the bracket.

[0012] Preferably, a second rotating frustum is fixed to the bottom of the connecting block, and a housing is fixed to the bottom of the second rotating frustum, with the inner wall of the housing slidably connected to the outer side of the infrared calibrator.

[0013] Preferably, the inner walls of both the first and second locking blocks are provided with rubber pads, and the end of the second threaded rod away from the handle is threaded with a nut.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The snap-fit ​​mechanism of this utility model can install the fixing plate on the upright through its internal structure, and at the same time facilitate the adjustment of the position of the fixing plate. By setting the fixing plate, the first rotating frustum, the first snap-fit ​​block and the second snap-fit ​​block to work together, it is easy to install the pressure sensor body on the fixing plate, and at the same time, it is easy to adjust the angle of the pressure sensor body. The infrared calibrator can use the infrared radiation temperature measurement principle to calibrate the position of the pressure sensor body. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the adjustable pressure sensor fixed calibration device provided by this utility model;

[0017] Figure 2 A schematic diagram of the snap-fit ​​mechanism provided by this utility model;

[0018] Figure 3 A schematic diagram of the first rotating frustum structure provided by this utility model;

[0019] Figure 4 A schematic diagram of the support structure provided by this utility model.

[0020] In the diagram: 1. Upright pole; 2. Pressure sensor body; 3. Infrared calibrator; 4. Clamping mechanism; 41. Limiting ring; 42. First threaded rod; 43. First turntable; 44. Clamping block; 5. Fixing plate; 6. First rotating frustum; 7. First clamping block; 8. Second clamping block; 9. Second threaded rod; 10. Handle; 11. Clamping ring; 12. Bracket; 13. Rotating rod; 14. Connecting block; 15. Second rotating frustum; 16. Outer shell; 17. Rubber pad; 18. Nut. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 As shown, an adjustable pressure sensor fixing and calibration device includes a support rod 1. Since the support rod 1 is fixed to the hospital bed, and the pressure sensor body 2 and infrared calibrator 3 are located on the outside of the support rod 1, the support rod 1 can mount the pressure sensor body 2 and infrared calibrator 3 on the hospital bed. The pressure sensor body 2 and infrared calibrator 3 are respectively arranged on the outside of the support rod 1, and the pressure sensor body 2 and infrared calibrator 3 are designed symmetrically. It should be noted that the pressure sensor body 2 can convert physical pressure signals into electrical signals using the piezoresistive effect or piezoelectric effect. When external pressure acts on the pressure sensor body 2, the resistance value or charge distribution of its internal sensitive element will change, thereby generating an electrical signal proportional to the pressure. The device body 2 can sense pressure fluctuations in the heart chamber or blood vessels in real time and convert these fluctuations into electrical signals to be transmitted to the monitoring equipment. At the same time, the height of the pressure sensor body 2 needs to be adjusted according to the patient's heart position to ensure accurate pressure data. The infrared calibrator 3 uses the principle of infrared radiation thermometry. By receiving the infrared radiation energy emitted by the target object, combined with the optical system, photoelectric detector, signal processing circuit and emissivity correction algorithm, the radiation energy is converted into a precise temperature value, thereby ensuring the accuracy of the pressure sensor body 2 and other components in surgical monitoring. Two sets of locking mechanisms 4 are set on the outside of the pole 1. The locking mechanism 4 can install the fixing plate 5 on the outside of the pole 1 through its internal structure, and at the same time, it can facilitate the adjustment of the position of the fixing plate 5 on the pole 1.

[0023] A fixing plate 5 is installed on the outside of the upright 1. A first rotating frustum 6 is provided on one side of the fixing plate 5. A first snap-fit ​​block 7 is fixed on one side of the first rotating frustum 6. A second snap-fit ​​block 8 is rotatably connected to the inner wall of the first snap-fit ​​block 7. A second threaded rod 9 is rotatably connected to the inner wall of the first snap-fit ​​block 7, and the outer side of the second threaded rod 9 is threadedly connected to the inner wall of the second snap-fit ​​block 8. A handle 10 is fixed to the end of the second threaded rod 9 away from the second snap-fit ​​block 8. Rubber pads 17 are provided on the inner walls of both the first snap-fit ​​block 7 and the second snap-fit ​​block 8. A nut 18 is threadedly connected to the end of the second threaded rod 9 away from the handle 10. Since the fixing plate 5 is installed on the outside of the upright 1 through the snap-fit ​​mechanism 4, and the pressure sensor body 2 is installed on one side of the first rotating frustum 6 on one side of the fixing plate 5 through the first snap-fit ​​block 7 and the second snap-fit ​​block 8, the snap-fit ​​mechanism 4 can effectively control the pressure sensor body 2 of the upright 1. When the position is adjusted, the position of the pressure sensor body 2 can be adjusted. At the same time, since the second threaded rod 9 is rotatably connected to the inner wall of the first locking block 7, and the outer side of the second threaded rod 9 is threadedly connected to the inner wall of the second locking block 8, when the handle 10 fixed at one end of the second threaded rod 9 is rotated, the second locking block 8 can be driven to rotate towards the first locking block 7, thereby allowing the pressure sensor body 2 to be installed on one side of the first rotating platform 6. The first rotating platform 6 can adjust the angle of the pressure sensor body 2 installed on one side of it. It should be noted that the inner wall of the first rotating platform 6 is threaded with a bolt, and a turntable is fixed at the end of the bolt away from the first rotating platform 6. When the turntable is rotated, it can drive the bolt to lock the first rotating platform 6, thereby fixing the pressure sensor body 2 installed on one side of the first rotating platform 6.

[0024] The locking mechanism 4 includes two sets of limiting rings 41 that slide on the outside of the upright 1, and the outer side of the limiting rings 41 is fixedly connected to one side of the fixing plate 5. The inner wall of the limiting rings 41 is threaded with a first threaded rod 42. The end of the first threaded rod 42 away from the limiting rings 41 is fixed with a first turntable 43, and the end of the first threaded rod 42 near the limiting rings 41 is rotatably connected with a clamping block 44. When it is necessary to adjust the position of the pressure sensor body 2, the limiting rings 41 set on the outside of the upright 1 are first moved along the outside of the upright 1. When the position of the pressure sensor body 2 is adjusted to a suitable position... Then, the first turntable 43, which is fixed at one end of the first threaded rod 42, is rotated. The first turntable 43 can drive the first threaded rod 42, which is fixed at its axis, to rotate. The first threaded rod 42 can drive the clamping block 44, which is rotatably connected to one end of it, to clamp the upright rod 1, thereby fixing the limiting ring 41 and fixing the fixing plate 5, which is fixed on the outside of the limiting ring 41. Since the pressure sensor body 2 is installed on one side of the first rotating platform 6, and since the first rotating platform 6 is installed on one side of the fixing plate 5, the pressure sensor body 2 can be fixed.

[0025] A snap-fit ​​ring 11 is slidably connected to the outer side of the upright 1, and a bracket 12 is fixed to the outer side of the snap-fit ​​ring 11. A horizontally arranged rotating rod 13 is rotatably connected to the inner wall of the bracket 12, and a connecting block 14 is fixed to the outer side of the rotating rod 13, with the connecting block 14 positioned at the center of the bracket 12. A second rotating frustum 15 is fixed to the bottom of the connecting block 14, and a housing 16 is fixed to the bottom of the second rotating frustum 15. The inner wall of the housing 16 is slidably connected to the outer side of the infrared calibrator 3. When the position of the infrared calibrator 3 needs to be adjusted, the snap-fit ​​ring 11 is first moved to the appropriate position, and then the fixing bolts on the inner wall of the snap-fit ​​ring 11 are tightened. Since the bracket 12 is fixed to the outer side of the snap-fit ​​ring 11, the bracket 12 can be fixed to the outer side of the upright 1. Since the rotating rod 13 is rotatably connected to the inner wall of the bracket 12, the infrared calibrator 3, which is installed on the outer side of the rotating rod 13 via the connecting block 14 and the second rotating frustum 15, can move along the... The bracket 12 rotates along its inner wall. It should be noted that the inner wall of the bracket 12 is threaded with bolts, and a turntable is fixed to the end of the bolts away from the bracket 12. When the turntable rotates, it causes the bolts to engage the rotating rod 13 rotating on the inner wall of the bracket 12, thereby fixing the connecting block 14 installed on the outside of the rotating rod 13 to the second rotating platform 15. The second rotating platform 15 causes the outer casing 16 installed at its bottom to rotate. Since the infrared calibrator 3 is installed inside the outer casing 16, the second rotating platform 15 can rotate the infrared calibrator 3. It should be noted that the inner wall of the second rotating platform 15 is also threaded with bolts, and a turntable is fixed to the end of the bolts away from the second rotating platform 15. When the turntable rotates, it causes the bolts to engage the second rotating platform 15, thereby fixing the outer casing 16 installed at the bottom of the second rotating platform 15 to the infrared calibrator 3.

[0026] When the position of the pressure sensor body 2 needs to be adjusted, first move the bracket 12 with the infrared calibrator 3 installed along the retaining ring 11 along the upright 1. After moving the infrared calibrator 3 to a suitable position, tighten the fixing bolts on the inner wall of the retaining ring 11. Since the bracket 12 is fixed to the outside of the retaining ring 11, the bracket 12 can be fixed to the outside of the upright 1, thereby fixing the position of the infrared calibrator 3. Since the rotating rod 13 is rotatably connected to the inner wall of the bracket 12, the infrared calibrator 3, which is installed on the outside of the rotating rod 13 through the connecting block 14 and the second rotating platform 15, can rotate along the inner wall of the bracket 12, thereby adjusting the angle of the infrared calibrator 3. After the height and angle of the infrared calibrator 3 are adjusted, start the infrared calibrator 3 to align with the position of the patient's heart to form a horizontal line. Then place the pressure sensor body 2 between the first retaining block 7 and the second retaining block 8, and then rotate the fixing handle 10. The handle 10 can drive the fixing... The second threaded rod 9 at its axis rotates, which drives the second locking block 8 to rotate towards the first locking block 7, thereby mounting the pressure sensor body 2 on one side of the first rotating frustum 6. The angle of the pressure sensor body 2 mounted on its side can be adjusted by the first rotating frustum 6. Then, the pressure sensor body 2 is moved to a position horizontal to the patient's heart. Then, the first turntable 43 is rotated, which drives the first threaded rod 42 fixed at its axis to rotate. The first threaded rod 42 drives the clamping block 44 rotatably connected to one end to clamp the upright rod 1, thereby fixing the limiting ring 41 and fixing the fixing plate 5 fixed to the outside of the limiting ring 41. Since the pressure sensor body 2 is mounted on one side of the first rotating frustum 6 and the first rotating frustum 6 is mounted on one side of the fixing plate 5, the pressure sensor body 2 can be fixed. At this time, the purpose of calibrating and fixing the pressure sensor body 2 is completed.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable pressure sensor fixed calibration device, comprising a vertical rod (1), characterized in that, Also includes: The pressure sensor body (2) and the infrared calibrator (3) are respectively set on the outside of the pole (1), and the pressure sensor body (2) and the infrared calibrator (3) are designed symmetrically from top to bottom. Two sets of snap-fit ​​mechanisms (4) are set on the outside of the pole (1). A fixing plate (5) is set on the outside of the upright (1). A first rotating frustum (6) is set on one side of the fixing plate (5). A first snap-fit ​​block (7) is fixed on one side of the first rotating frustum (6). A second snap-fit ​​block (8) is rotatably connected to the inner wall of the first snap-fit ​​block (7).

2. A fixed calibration device for a load cell according to claim 1, wherein: The snap-fit ​​mechanism (4) includes two sets of limiting rings (41) that slide on the outside of the upright (1), and the outer side of the limiting ring (41) is fixedly connected to one side of the fixing plate (5). The inner wall of the limiting ring (41) is threaded with a first threaded rod (42). The end of the first threaded rod (42) away from the limiting ring (41) is fixed with a first turntable (43), and the end of the first threaded rod (42) near the limiting ring (41) is rotatably connected with a clamping block (44).

3. An adjustable pressure sensor calibration fixture according to claim 1, wherein: The inner wall of the first snap-fit ​​block (7) is rotatably connected to a second threaded rod (9) arranged laterally, and the outer side of the second threaded rod (9) is threadedly connected to the inner wall of the second snap-fit ​​block (8). A handle (10) is fixed to one end of the second threaded rod (9) away from the second snap-fit ​​block (8).

4. The adjustable pressure sensor fixed calibration device according to claim 1, characterized in that: A snap ring (11) is slidably connected to the outside of the upright (1), and a bracket (12) is fixed to the outside of the snap ring (11).

5. An adjustable pressure sensor calibration fixture according to claim 4, wherein: The inner wall of the bracket (12) is rotatably connected to a horizontally arranged rotating rod (13), and a connecting block (14) is fixed on the outer side of the rotating rod (13), and the connecting block (14) is located at the center of the bracket (12).

6. An adjustable pressure sensor calibration fixture according to claim 5, wherein: The bottom of the connecting block (14) is fixed with a second rotating frustum (15), the bottom of the second rotating frustum (15) is fixed with a shell (16), and the inner wall of the shell (16) is slidably connected to the outer side of the infrared calibrator (3).

7. The adjustable pressure sensor fixed calibration device according to claim 3, characterized in that: The inner walls of the first snap-fit ​​block (7) and the second snap-fit ​​block (8) are provided with rubber pads (17), and the end of the second threaded rod (9) away from the handle (10) is threaded with a nut (18).

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