Calibration device for pressing height of cardio-pulmonary resuscitation machine

Abstract

The invention relates to a cardio-pulmonary resuscitation machine pressing height calibration device which comprises a device base, a bottom plate containing groove is formed in the upper end of the device base, a front side clamping plate and a rear side clamping plate are arranged in the bottom plate containing groove, and the front side clamping plate and the rear side clamping plate are driven by independent clamping plate driving mechanisms respectively. A calibration support is assembled at the upper end of the device base in a guiding and moving mode in the left-right direction and comprises a support plate located on the upper side of the device base, a calibration rod is assembled on the support plate in a guiding and moving mode in the up-down direction, a pressed head is arranged at the upper end of the calibration rod, and a pressed head spring is arranged between the pressed head and the support plate. An adjusting nut is in threaded connection with the position, on the lower side of the support plate, of the calibration rod, a datum plate located on the lower side of the adjusting nut is arranged at the bottom of the calibration rod, and a downward first displacement sensor used for detecting vertical displacement of the datum plate is arranged on the support plate. The pressing height calibration device for the cardio-pulmonary resuscitation machine can calibrate the pressing height of the cardio-pulmonary resuscitation machine.

Description

Technical Field

[0001] The present invention relates to the technical field of metrological calibration, and particularly relates to a pressing height calibration device for a cardiopulmonary resuscitator. Background Art

[0002] A cardiopulmonary resuscitator is a medical device that presses on the heart to restore the heart's blood supply ability. Its specific structure is as Figure 1 and Figure 2 shown. Figure 1 is a cardiopulmonary resuscitator in the prior art, which includes a bottom plate 1, a column 2 fixed to one side of the bottom plate 1. A machine body cantilever 3 that can move up and down is assembled on the column 2. A resuscitator head 5 is provided at the cantilever end of the machine body cantilever 3, and the resuscitator head 5 has a pressing head 4 that can output up and down movement actions.

[0003] During use, the patient lies on the bottom plate 1, and the medical staff manually lower the height of the machine body cantilever 3 so that the pressing head contacts the patient's chest. Then, the pressing head outputs a pressing action on the chest. The pressing head needs to perform a pressing depth (also called pressing height) of 5 cm to 6 cm on the patient's chest. If the pressing depth of the pressing head is insufficient, the corresponding cardiopulmonary resuscitation effect cannot be achieved. If the pressing depth of the pressing head is too large, it will cause excessive damage to the human body. Therefore, it is necessary to calibrate the pressing height of the pressing head of the cardiopulmonary resuscitator.

[0004] Figure 2 is another cardiopulmonary resuscitator in the prior art, which includes a bottom plate 1 and a resuscitator head 5. Machine head connecting plates 6 are connected to the left and right sides of the resuscitator head. The machine head connecting plates 6 are detachably connected to the bottom plate 1. When the machine head connecting plates are connected to the bottom plate, the entire cardiopulmonary resuscitator forms an annular structure. Specifically, during use, first place the bottom plate under the patient's back, then connect the machine head connecting plates on both sides to the bottom plate. The pressing head 4 moves downward first once, so that the pressing head contacts the upper side of the patient's chest. Subsequently, the resuscitator head controls the pressing head to output pressing actions with a certain amplitude and frequency. The pressing height of the pressing head of this cardiopulmonary resuscitator also needs to be calibrated. However, before the pressing head outputs a fixed pressing amplitude, the pressing head needs to move in advance once, and the movement height of this advance movement will be used as a benchmark for the movement height before outputting a fixed pressing amplitude. Therefore, its calibration is more complicated. Summary of the Invention

[0005] The purpose of the present invention is to provide a pressing height calibration device for a cardiopulmonary resuscitator that can calibrate the pressing height of the cardiopulmonary resuscitator.

[0006] To solve the above technical problems, the technical solution of a pressing height calibration device for a cardiopulmonary resuscitator in the present invention is as follows: A pressing height calibration device for a cardiopulmonary resuscitation machine, comprising a device base. At the upper end of the device base, there is a bottom plate placement groove extending in the left-right direction. Inside the bottom plate placement groove, there are a front clamping plate and a rear clamping plate that can move back and forth. The front clamping plate and the rear clamping plate are respectively driven by their own independent clamping plate driving mechanisms. The upper end of the device base is guided and movably assembled with a calibration bracket in the left-right direction. The calibration bracket includes a bracket plate located above the device base. On the bracket plate, a calibration rod is guided and movably assembled in the up-down direction. The upper end of the calibration rod is provided with a pressure-receiving head for contacting the pressing head. A pressure-receiving head spring is arranged between the pressure-receiving head and the bracket plate. On the calibration rod, an adjusting nut is threadedly connected below the bracket plate. The bottom of the calibration rod is provided with a reference plate located below the adjusting nut. On the bracket plate, there is a downward-facing first displacement sensor for detecting the up-down displacement of the reference plate.

[0007] Further, the first displacement sensor is a laser displacement sensor.

[0008] Further, a spring sleeve coaxially arranged with the calibration rod is fixed on the upper side of the bracket plate. The pressure-receiving head spring is located inside the spring sleeve. The upper end of the spring sleeve is spaced from the pressure-receiving head. The top height of the spring sleeve is higher than the top height of the displacement sensor.

[0009] Further, a vertical installation groove is provided at the upper end of the pressure-receiving head. In the installation groove, there is an upward-facing second displacement sensor for detecting the up-down displacement of the pressing head. The height of the second displacement sensor is lower than the upper end face of the pressure-receiving head.

[0010] Further, the calibration bracket further includes a front vertical plate and a rear vertical plate arranged side by side in the front-rear direction. The front vertical plate and the rear vertical plate are located on the front and rear sides of the bottom plate placement groove. The bottom of the front vertical plate is guided and movably assembled on the device base in the left-right direction. The bottom of the rear vertical plate is guided and movably assembled on the device base in the left-right direction. The front and rear ends of the bracket plate are detachably connected to the front vertical plate and the rear vertical plate respectively by bolts.

[0011] Further, a plurality of front-side tightening screws for pressing against the front vertical plate are threadedly connected to the front side of the device base at intervals in the left-right direction; a plurality of rear-side tightening screws for pressing against the rear vertical plate are threadedly connected to the rear side of the device base at intervals in the left-right direction.

[0012] Further, the clamping plate driving mechanism includes a front clamping plate driving mechanism and a rear clamping plate driving mechanism. The front clamping plate driving mechanism includes at least two front clamping plate ejector rods arranged at intervals in the left-right direction. The front clamping plate ejector rods are threadedly connected to the device base; the rear clamping plate driving mechanism includes at least two rear clamping plate ejector rods arranged at intervals in the left-right direction. The rear clamping plate ejector rods are threadedly connected to the device base.

[0013] Further, a front side splint handwheel is provided at the front end of each front side splint ejector rod; a rear side splint handwheel is provided at the rear end of each rear side splint ejector rod.

[0014] The beneficial effects of the present invention are as follows: When calibrating the cardiopulmonary resuscitation machine, it is necessary to ensure the relative positional relationship between the cardiopulmonary resuscitation machine and the pressure head. Specifically, place the bottom plate of the cardiopulmonary resuscitation machine in the bottom plate placement groove. While clamping and fixing the bottom plate through the relative movement of the front side splint and the rear side splint, it is also possible to adjust the front-back positional relationship between the pressing head of the cardiopulmonary resuscitation machine and the pressure head. Move the calibration bracket left and right to adjust the left-right position of the pressure head to ensure that the pressure head is directly below the pressing head. By adjusting the nut, the pre-tightening force of the pressure head spring can be adjusted, thereby changing the resistance when the pressure head is pressed to simulate the pressing resistance of a real human body. When the cardiopulmonary resuscitation machine is working, the pressing head outputs an up-and-down movement with a certain frequency and amplitude, and the pressure head, calibration rod, and reference plate move synchronously with the pressing head. The first displacement sensor detects the up-and-down displacement of the reference plate to calibrate the pressing height of the pressing head. Description of the Drawings

[0015] By reading the following detailed description with reference to the drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a schematic structural diagram of the first cardiopulmonary resuscitation machine in the background art of the present invention; Figure 2 is a schematic structural diagram of the second cardiopulmonary resuscitation machine in the background art of the present invention; Figure 3 is a calibration schematic diagram of the cardiopulmonary resuscitation machine pressing height calibration device for the first cardiopulmonary resuscitation machine in the present invention; Figure 4 is Figure 3 In, a schematic diagram of the cooperation of the device base, calibration bracket, and bottom plate in the side view direction; Figure 5 is Figure 3 In, a schematic diagram of the cooperation of the pressure head, device bracket, and bottom plate in the top view direction; Figure 6 is a calibration schematic diagram of the cardiopulmonary resuscitation machine pressing height calibration device for the second cardiopulmonary resuscitation machine in the present invention; 1. Base plate; 2. Column; 3. Body cantilever; 4. Pressing head; 5. CPR machine head; 6. Machine head connecting plate; 7. Base plate placement groove; 8. Front side clamp handwheel; 9. Front side clamp; 10. Second displacement sensor; 11. Compressed head; 12. Compressed head spring; 13. Adjusting nut; 14. Calibration rod; 15. Spring sleeve; 16. First displacement sensor; 17. Support plate; 18. Reference plate; 19. Front side vertical plate; 20. Bolt; 21. Rear side vertical plate; 22. Front side tightening screw; 23. Rear side tightening screw; 24. Rear side clamp; 26. Rear side clamp handwheel; 27. Front side clamp ejector rod; 28. Rear side clamp ejector rod. Detailed implementation manner

[0016] To facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0017] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention.

[0018] An embodiment of a pressing height calibration device for a cardiopulmonary resuscitation machine in the present invention is as Figures 1 to 6 shown: It includes a device base, and a base plate placement groove 7 extending in the left - right direction is provided at the upper end of the device base. A front side clamp 9 and a rear side clamp 24 capable of moving back and forth are arranged in the base plate placement groove 7. The front side clamp 9 and the rear side clamp 24 are in guiding and moving cooperation with the base plate placement groove 7. The front side clamp 9 and the rear side clamp 24 are respectively driven by their respective independent clamp driving mechanisms. In this embodiment, the clamp driving mechanism includes a front side clamp driving mechanism and a rear side clamp driving mechanism. The front side clamp driving mechanism includes at least two front side clamp ejector rods 27 spaced apart in the left - right direction, and the front side clamp ejector rods 27 are threadedly connected to the device base; the rear side clamp driving mechanism includes at least two rear side clamp ejector rods 28 spaced apart in the left - right direction, and the rear side clamp ejector rods 28 are threadedly connected to the device base.

[0019] A front-side splint handwheel 8 is provided at the front end of each front-side splint ejector rod 27; a rear-side splint handwheel 26 is provided at the rear end of each rear-side splint ejector rod 28. The rear end of the front-side splint ejector rod is in rotational pushing fit with the front-side splint, and the front end of the rear-side splint ejector rod is in rotational pushing fit with the rear-side splint. During use, the bottom plate 1 of the cardiopulmonary resuscitator is placed between the front-side splint 9 and the rear-side splint 24, and the front-side splint 9 and the rear-side splint 24 can clamp and fix the bottom plate 1. At the same time, since the front-side splint 9 and the rear-side splint 24 are respectively driven by their respective independent splint driving mechanisms, the front-side splint and the rear-side splint can adjust the front and rear positions of the bottom plate, that is, the cardiopulmonary resuscitator.

[0020] A calibration bracket is assembled on the upper end of the device base in a guiding and moving manner along the left-right direction. The calibration bracket includes a bracket plate 17 located on the upper side of the device base. The bracket plate 17 is horizontally arranged. The calibration bracket further includes a front-side vertical plate 19 and a rear-side vertical plate 21 arranged side by side in the front-rear direction. The front-side vertical plate 19 and the rear-side vertical plate 21 are located on the front and rear sides of the bottom plate placement groove 7. The bottom of the front-side vertical plate is assembled on the device base in a guiding and moving manner along the left-right direction, and the bottom of the rear-side vertical plate is assembled on the device base in a guiding and moving manner along the left-right direction. The front and rear ends of the bracket plate 17 are detachably connected to the front-side vertical plate 19 and the rear-side vertical plate 21 respectively by bolts 20. A plurality of front-side tightening screws 22 for tightening the front-side vertical plate are threadedly connected to the front side of the device base at intervals along the left-right direction; a plurality of rear-side tightening screws 23 for tightening the rear-side vertical plate are threadedly connected to the rear side of the device base at intervals along the left-right direction. During use, by moving the left-right positions of the front-side vertical plate 19 and the rear-side vertical plate 21 and then tightening the corresponding tightening screws, the positions of the front-side vertical plate and the rear-side vertical plate can be fixed.

[0021] A calibration rod 14 is assembled on the bracket plate in a guiding and moving manner along the up-down direction. A pressure-receiving head 11 for contacting the pressing head is provided at the upper end of the calibration rod 14. A pressure-receiving head spring 12 is provided between the pressure-receiving head 11 and the bracket plate 17. An adjusting nut 13 is threadedly connected to the calibration rod 14 below the bracket plate. A reference plate 18 is provided at the bottom of the calibration rod 14 and is located below the adjusting nut. The reference plate 18 is horizontally arranged. A first displacement sensor 16 for detecting the up-down displacement of the reference plate is provided on the bracket plate facing downward. The reference plate 18 is located below the bracket plate 17 and is between the front-side vertical plate 19 and the rear-side vertical plate 21. Therefore, the surface of the reference plate 18 is not easily damaged by knocking. The first displacement sensor is a laser displacement sensor, and the laser emitted by it is reflected back to the laser displacement sensor by the upper surface of the reference plate, so that the up-down displacement of the calibration rod, that is, the pressure-receiving head, can be accurately measured.

[0022] A spring sleeve 15 coaxial with the calibration rod is fixed on the upper side of the support plate. The compression head spring 12 is located inside the spring sleeve 15. The upper end of the spring sleeve 15 is spaced from the compression head 11. The top height of the spring sleeve 15 is higher than the top height of the first displacement sensor 16. The spring sleeve plays a role in protecting and guiding the compression head spring. At the same time, the spring sleeve also plays a role in preventing the compression head from moving downward and colliding with the upper end of the first displacement sensor.

[0023] A vertical installation groove is provided at the upper end of the compression head. A second displacement sensor 10 for detecting the up and down displacement of the pressing head is arranged upward in the installation groove. The height of the second displacement sensor 10 is lower than the upper end face of the compression head.

[0024] The use process of the pressing height calibration device of the cardiopulmonary resuscitation machine in the present invention is as follows: For the calibration of the first type of cardiopulmonary resuscitation machine, place the bottom plate of the cardiopulmonary resuscitation machine between the front clamping plate and the rear clamping plate of the bottom plate placement groove. The front clamping plate and the rear clamping plate move back and forth to clamp and fix the bottom plate. At the same time, the front and rear positions of the resuscitation machine pressing head of the cardiopulmonary resuscitation machine are adjusted to ensure that the front and rear positions of the pressing head are consistent with the front and rear positions of the compression head. Then move the calibration bracket left and right to move the compression head to directly below the pressing head. Rotate the adjusting nut to adjust the pre-tightening force of the compression head spring to simulate the working resistance brought by the human body to the pressing head during the actual use process of the cardiopulmonary resuscitation machine. Subsequently, lower the height of the nose cantilever of the cardiopulmonary resuscitation machine so that the pressing head of the cardiopulmonary resuscitation machine contacts the upper end of the compression head. The pressing head outputs a pressing action with a certain frequency and amplitude. The compression head drives the calibration rod and the reference plate to perform synchronous actions. The first displacement sensor detects the displacement of the reference plate, thereby realizing the calibration of the pressing height of the pressing head. The second displacement sensor can be used to detect the change in the distance between the pressing head and the compression head during the calibration process. The pressing head and the compression head should maintain a contact relationship. During the pressing process, the reference plate is located above the bottom plate placement groove. The bottom plate placement groove can be used to avoid the movement of the pressing head, which helps to reduce the height requirement for the whole machine.

[0025] For the calibration of the second type of cardiopulmonary resuscitation machine, when the user of the second type of cardiopulmonary resuscitation machine takes the machine to the calibration unit for calibration, the head connecting plate and the bottom plate are connected together. Since the calibration personnel lack professional connection knowledge, the calibration unit should avoid disassembling and reassembling the head connecting plate and the bottom plate to prevent damage to the cardiopulmonary resuscitation machine during this process. The calibration personnel can remove the support plate from the front vertical plate and the rear vertical plate. After fixing the bottom plate of the cardiopulmonary resuscitation machine between the front clamping plate and the rear clamping plate, move the left and right positions of the calibration bracket. Finally, the calibration personnel insert the support plate into the annular structure of the cardiopulmonary resuscitation machine in the front-rear direction and fix the support plate to the upper ends of the front vertical plate and the rear vertical plate with bolts. During the calibration process, when the pressing head of the cardiopulmonary resuscitation machine makes the first movement, the pressing head moves downward and contacts the pressure-receiving head. The function of the second displacement sensor is to detect the first downward distance of the pressing head and determine whether the pressing head contacts the pressure-receiving head. Since the distance between the second displacement sensor and the upper surface of the pressure-receiving head is known and determined, when the distance detected by the second displacement sensor between the pressing head and the second displacement sensor is the same as the distance between the second displacement sensor and the upper surface of the pressure-receiving head, it indicates that the pressing head contacts the pressure-receiving head. Subsequently, the pressing head can output a pressing action with a certain amplitude and frequency to the pressure-receiving head, and the second displacement sensor detects the action amplitude of the reference plate to cooperate with the first displacement sensor to complete the calibration of the second type of cardiopulmonary resuscitation machine.

[0026] The pressing height calibration device for the cardiopulmonary resuscitation machine in the present invention can realize the pressing height calibration of cardiopulmonary resuscitation machines of various specifications and models, with strong applicability and good versatility.

[0027] In the above description of this specification, unless otherwise clearly specified and limited, terms such as "fixed", "installed", "connected" or "coupled" should be understood in a broad sense. For example, for the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components or the interaction relationship between two components. Therefore, unless otherwise clearly limited in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0028] Based on the above description in this specification, those skilled in the art can also understand the following terms used, such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc. The terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0029] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically and clearly defined.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A compression height calibration device for a cardiopulmonary resuscitation machine, comprising a device base, characterized in that: At the upper end of the device base, there is a bottom plate placement groove extending in the left - right direction. Inside the bottom plate placement groove, there are a front clamping plate and a rear clamping plate that can move back and forth. The front clamping plate and the rear clamping plate are respectively driven by their own independent clamping plate driving mechanisms. The upper end of the device base is guided and movably assembled with a calibration bracket in the left - right direction. The calibration bracket includes a bracket plate located on the upper side of the device base. On the bracket plate, a calibration rod is guided and movably assembled in the up - down direction. The upper end of the calibration rod is provided with a pressure - receiving head for contacting the pressing head. A pressure - receiving head spring is arranged between the pressure - receiving head and the bracket plate. On the calibration rod, a regulating nut is threadedly connected to the lower side of the bracket plate. The bottom of the calibration rod is provided with a reference plate located below the regulating nut. On the bracket plate, there is a downward - facing first displacement sensor for detecting the up - down displacement of the reference plate.

2. The cardiopulmonary resuscitation machine compression height calibration device according to claim 1, characterized in that: The first displacement sensor is a laser displacement sensor.

3. The cardiopulmonary resuscitation machine compression height calibration device according to claim 1, characterized in that: On the upper side of the bracket plate, a spring sleeve coaxially arranged with the calibration rod is fixed. The pressure - receiving head spring is located inside the spring sleeve. The upper end of the spring sleeve is spaced from the pressure - receiving head, and the top height of the spring sleeve is higher than the top height of the displacement sensor.

4. The cardiopulmonary resuscitation machine compression height calibration device according to claim 1, characterized in that: On the upper end of the pressure - receiving head, there is a vertical installation groove. In the installation groove, there is an upward - facing second displacement sensor for detecting the up - down displacement of the pressing head. The height of the second displacement sensor is lower than the upper end face of the pressure - receiving head.

5. The cardiopulmonary resuscitation machine compression height calibration device according to claim 1, wherein: The calibration bracket further includes a front vertical plate and a rear vertical plate arranged side - by - side in the front - rear direction. The front vertical plate and the rear vertical plate are located on the front and rear sides of the bottom plate placement groove. The bottom of the front vertical plate is guided and movably assembled on the device base in the left - right direction. The bottom of the rear vertical plate is guided and movably assembled on the device base in the left - right direction. The front and rear ends of the bracket plate are detachably connected to the front vertical plate and the rear vertical plate respectively by bolts.

6. The cardiopulmonary resuscitation machine compression height calibration device according to claim 5, characterized in that: On the front side of the device base, a plurality of front side tightening screws for pressing against the front vertical plate are threadedly connected at intervals in the left - right direction; on the rear side of the device base, a plurality of rear side tightening screws for pressing against the rear vertical plate are threadedly connected at intervals in the left - right direction.

7. The cardiopulmonary resuscitation machine compression height calibration device according to claims 1 to 6, characterized in that: The clamping plate driving mechanism includes a front clamping plate driving mechanism and a rear clamping plate driving mechanism. The front clamping plate driving mechanism includes at least two front clamping plate ejector rods arranged at intervals in the left - right direction. The front clamping plate ejector rods are threadedly connected to the device base; the rear clamping plate driving mechanism includes at least two rear clamping plate ejector rods arranged at intervals in the left - right direction. The rear clamping plate ejector rods are threadedly connected to the device base.

8. The cardiopulmonary resuscitation machine compression height calibration device according to claim 7, characterized in that: The front end of each front clamping plate ejector rod is provided with a front clamping plate handwheel; the rear end of each rear clamping plate ejector rod is provided with a rear clamping plate handwheel.

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