Cardiopulmonary resuscitation compression depth limiter device

Abstract

A kind of cardiopulmonary resuscitation pressing depth limiting device, guide block is fixedly connected in the middle of transverse support beam, and T-shaped sliding groove one is set in the front part thereof;A pair of rotating shafts are oppositely fixedly connected in the left and right sides of guide block;A pair of rotating arms are rotatably connected with a pair of rotating shafts by a pair of limiting shaft sleeves on the rotating arms;A pair of limiting arms are fixedly connected at one end of a pair of rotating arms, and a pair of arc-shaped protrusions are correspondingly fixedly connected at the other end;The cross section of vertical sliding beam is T-shaped, and the middle of front end is fixedly connected with connecting arm;Vertical sliding beam is vertically and slidably inserted into T-shaped sliding groove one of guide block, and a plurality of positioning holes one are oppositely set in the upper parts of left and right end faces thereof;Limiting sliding block is slidably sleeved on the outside of vertical sliding beam by T-shaped sliding groove two set in the front part thereof, and a pair of stepped guide holes are oppositely set in the left and right end faces thereof;The inner ends of a pair of limiting pin shafts are correspondingly inserted into a pair of guide holes.The device can effectively limit the pressing amplitude of CPR.

Description

A cardiopulmonary resuscitation compression depth limiting device Technical Field

[0001] This invention belongs to the technical field of cardiopulmonary resuscitation equipment, specifically relating to a cardiopulmonary resuscitation compression depth limiting device. Background Technology

[0002] In my country, approximately 1.03 million people suffer from out-of-hospital cardiac arrest (OHCA) each year, with a survival rate of less than 5%. Bystander cardiopulmonary resuscitation (CPR) is the most effective means of emergency treatment for OHCA patients; timely and effective CPR can increase the survival rate to 50%. For every minute of delay in CPR, the survival rate of the OHCA patient decreases by approximately 7% or more.

[0003] However, the CPR practice rate in my country is less than 1%, and bystanders often lack CPR skills and are unaware of how to administer the aid. Furthermore, the required compression depth for CPR is 5-6 cm, and due to factors such as rescuers' improper control of pressure and depth, 40%–85% of CPR attempts result in chest fractures. Even bystanders who are skilled in CPR often hesitate to perform the procedure for fear of disputes arising from improper execution, further reducing the CPR practice rate. This lack of knowledge and reluctance to perform CPR, resulting in a practice rate of less than 1% in my country, is a major reason for the poor survival rate of patients with out-of-hospital carcinoma (OHCA).

[0004] Most existing CPR depth control devices rely on sensors to provide feedback on compression depth, but they cannot directly limit the depth. CPR compression is an instantaneous inertial action; by the time the compression level feedback is seen, the compression has already been completed due to inertia, causing irreversible damage. Furthermore, during CPR, the practitioner's upper body needs to rise and fall, making it difficult to continuously monitor the device's feedback readings, thus limiting the effectiveness of existing CPR depth control devices. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a cardiopulmonary resuscitation (CPR) compression depth limiting device. This device has a simple structure and low manufacturing cost, and can effectively limit the compression depth of CPR, preventing abnormal situations such as chest fractures in patients during CPR. At the same time, this device can effectively lower the threshold for CPR rescuers, which is conducive to ensuring the success rate of rescue.

[0006] To achieve the above objectives, the present invention provides a cardiopulmonary resuscitation compression depth limiting device, comprising a transverse support beam, a guide block, a rotating shaft, a rotating arm, a vertical sliding beam, a limiting slider, and a limiting pin.

[0007] The transverse support beam is set horizontally;

[0008] The guide block is fixedly connected to the middle of the transverse support beam. A T-shaped groove is provided at the front of the guide block. The size of the T-shaped groove is adapted to the size of the cross-section of the vertical sliding beam.

[0009] A pair of rotating shafts are distributed opposite each other on the left and right sides of the guide block, and their rear ends are fixedly connected to the front end face of the transverse support beam vertically.

[0010] A pair of rotating arms are distributed on the left and right sides of the guide block. The lower part of the middle section is vertically fixedly connected to a pair of bushings at the position corresponding to a pair of rotating shafts. The pair of bushings are rotatably fitted onto the outside of a pair of rotating shafts through an axial through hole in their center. A pair of limiting arms are fixedly connected to the longer end of a pair of rotating arms, and the pair of limiting arms extend forward perpendicular to the pair of rotating arms. A pair of arc-shaped protrusions are fixedly connected to the shorter end of a pair of rotating arms, and the arc-shaped protrusions protrude arc-shaped in a direction away from the length of the rotating arms and in a direction closer to each other.

[0011] The vertical sliding beam is vertically slidably assembled in a T-shaped slide groove; a connecting arm is fixedly connected to the middle part of the front end of the vertical sliding beam in the part corresponding to the T-shaped slide groove; multiple pairs of positioning holes are opened on the upper part of the left and right end faces of the vertical sliding beam, and the multiple pairs of positioning holes are distributed in sequence at intervals in the vertical direction, and are set in a one-to-one correspondence between the left and right sides.

[0012] The limiting slider is located above the guide block, and its front part has a second T-shaped groove, the size of which is adapted to the size of the first T-shaped groove. The limiting slider is vertically slidably fitted onto the outside of the vertical sliding beam. The left and right end faces of the limiting slider are located inside a pair of rotating arms in the vertical state and are clearance-fitted with the pair of rotating arms in the vertical state. The left and right end faces of the limiting slider have a pair of stepped guide holes opposite each other. The pair of stepped guide holes are correspondingly set with multiple pairs of positioning holes. Each stepped guide hole consists of a positioning hole II located on the inner side and a countersunk hole located coaxially on the outer side of the positioning hole II. The diameter of the countersunk hole is larger than the diameter of the positioning hole II.

[0013] The limiting pin consists of an inner pin and a pin head coaxially fixed to the outer end of the pin; the size of the pin is adapted to the size of the positioning hole; the size of the pin head is larger than the size of the pin and is adapted to the size of the countersunk hole; the inner ends of a pair of limiting pins are correspondingly inserted into a pair of guide holes, and when they are not fully inserted into a pair of guide holes and enter a pair of corresponding stepped holes, they abut against the upper ends of a pair of limiting arms on a pair of rotating arms.

[0014] As a preferred embodiment, the cross-section of the vertical sliding beam is T-shaped, with a pair of vertical recesses on the left and right sides of its front end, and a vertical guide rail protruding forward between the pair of vertical recesses. The vertical guide rail is slidably engaged with the open end of the T-shaped sliding groove, and the connecting arm is fixedly connected to the front end face of the vertical guide rail.

[0015] As a preferred embodiment, the connecting arm is fixedly connected to the bottom of the front end face of the vertical guide rail.

[0016] Furthermore, in order to ensure stability and smoothness during relative rotation, the rotating shaft is axially limited and radially rotatable on the outside of the corresponding bushing via bearings.

[0017] Furthermore, in order to ensure that the vertical sliding beam can effectively act on the pair of rotating arms, thereby driving the rotation of the pair of rotating arms more efficiently, when the pair of rotating arms rotate in opposite directions and reach a horizontal state, the ends of the shorter section of the pair of rotating arms are fitted with a gap, and the arc apex of the pair of arc-shaped protrusions rotates into the interior of the T-shaped slide groove.

[0018] Furthermore, in order to ensure that the vertical sliding beam can smoothly drive a pair of rotating arms to rotate during the downward sliding process, the arc-shaped protrusion is semi-circular.

[0019] Furthermore, in order to effectively improve the versatility of the device, there are eight pairs of positioning holes, with the distance between any two adjacent pairs of positioning holes being the same.

[0020] As a preferred embodiment, the connecting arm is cubic in shape.

[0021] Furthermore, in order to ensure that the inner end of the limiting pin can be smoothly inserted into the positioning hole one, the outer end of the positioning hole one is provided with a chamfer structure.

[0022] In this invention, the guide block is fixedly connected to the middle of the transverse support beam, and its front end is provided with a T-shaped sliding groove adapted to the vertical sliding beam. This ensures that the vertical sliding beam only moves vertically during movement and not laterally. Therefore, the pressing mechanism can be driven by the connecting arm to move only vertically, which helps ensure precise control of the pressing amplitude. The pair of rotating shafts provides a rotation center for the pair of rotating arms. The pair of rotating arms are rotatably connected to the outside of the pair of rotating shafts via a pair of bushings connected to their upper parts. Simultaneously, one end of each pair of rotating arms is provided with a pair of arc-shaped protrusions, and the other end is provided with a pair of limiting arms. During the downward sliding of the vertical sliding beam, the lower end face of the pair of arc-shaped protrusions simultaneously acts on the pair of rotating arms to drive the vertical sliding beam. The rotating arms rotate synchronously in opposite directions, and during sliding, they reach a vertical position. This allows a pair of limiting arms to limit the partially inserted limiting pins, thus defining the initial height during compression. The stepped guide hole consists of an outer countersunk hole and an inner positioning hole, ensuring that the limiting pins are fully inserted after compression begins, guaranteeing proper compression. A pair of positioning holes are located on the left and right end faces of the vertical sliding beam, corresponding to the stepped guide holes. After the limiting pins are fully inserted, the limiting slider connects to the vertical sliding beam, allowing the limiting block on the transverse support beam to lower the limiting slide, thus defining the ending position of the compression mechanism. The multiple pairs of positioning holes allow for adjustments to the starting position of compression based on different patients, greatly improving the device's versatility. This device directly limits the CPR compression depth through the use of mechanical components, effectively adjusting and controlling the compression depth and preventing complications such as chest fractures during CPR. At the same time, the device lowers the barrier to CPR, allowing bystanders without CPR training to perform CPR rescue, significantly increasing the success rate of resuscitation. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of the present invention;

[0024] Figure 2 is a second structural schematic diagram of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the present invention;

[0026] Figure 4 is a schematic diagram of the assembly of the transverse support beam and a pair of rotating arms in this invention;

[0027] Figure 5 is a schematic diagram of the limiting pin in this invention;

[0028] Figure 6 is a schematic diagram of the application structure of the present invention.

[0029] In the diagram: 1. Horizontal support beam, 2. Vertical sliding beam, 3. Rotating arm, 4. Limiting slider, 5. Limiting pin, 6. Connecting arm, 7. Guide block, 8. Vertical recess, 9. Vertical guide rail, 10. Stepped guide hole, 11. Positioning hole, 12. Rotating shaft, 13. Bushing, 14. Limiting arm, 15. Arc-shaped protrusion, 16. T-shaped groove one, 17. Countersunk hole, 18. Positioning hole two, 19. T-shaped groove two, 20. Pin, 21. Pin head, 22. Cardiopulmonary resuscitation compression depth limiting device, 23. Compression mechanism, 24. Portable cardiopulmonary resuscitation protection device, 25. Horizontal side beam. Detailed Implementation

[0030] The present invention will be further described below.

[0031] As shown in Figures 1 to 5, the present invention provides a cardiopulmonary resuscitation compression depth limiting device, including a transverse support beam 1, a guide block 7, a rotating shaft 12, a rotating arm 3, a vertical sliding beam 2, a limiting slider 4, and a limiting pin 5.

[0032] The transverse support beam 1 is set horizontally;

[0033] The guide block 7 is fixedly connected to the middle of the transverse support beam 1. The front of the guide block 7 is provided with a T-shaped groove 16, the size of which is adapted to the size of the cross-section of the vertical sliding beam 2.

[0034] A pair of rotating shafts 12 are distributed on the left and right sides of the guide block 7, and their rear ends are fixedly connected to the front end face of the transverse support beam 1 vertically.

[0035] A pair of rotating arms 3 are distributed on the left and right sides of the guide block 7. The lower part of the middle is vertically fixed to a pair of bushings 13 at the position corresponding to a pair of rotating shafts 12. The pair of bushings 13 are rotatably fitted onto the outside of the pair of rotating shafts 12 through the axial through hole in their center. A pair of limiting arms 14 are fixedly connected to the longer end of the pair of rotating arms 3, and the pair of limiting arms 14 extend forward perpendicular to the pair of rotating arms 3. A pair of arc-shaped protrusions 15 are fixedly connected to the shorter end of the pair of rotating arms 3. The arc-shaped protrusions 15 protrude arc-shapedly away from the length of the rotating arms 3 and toward each other.

[0036] The vertical sliding beam 2 is vertically slidably assembled in the T-shaped slide groove 16; the middle part of the front end of the vertical sliding beam 2 is fixedly connected to the part corresponding to the T-shaped slide groove 16; multiple pairs of positioning holes 11 are opened on the upper part of the left and right end faces of the vertical sliding beam 2, and the multiple pairs of positioning holes 11 are distributed in sequence in the vertical direction at intervals, and are set in a one-to-one correspondence between the left and right sides.

[0037] The limiting slider 4 is located above the guide block 7, and a T-shaped groove 19 is provided at its front. The size of the T-shaped groove 19 is adapted to the size of the T-shaped groove 16. The limiting slider 4 is vertically slidably fitted onto the outside of the vertical sliding beam 2. The left and right end faces of the limiting slider 4 are located inside the pair of rotating arms 3 in the vertical state and are clearance-fitted with the pair of rotating arms 3 in the vertical state. A pair of stepped guide holes 10 are provided opposite to each other on the left and right end faces of the limiting slider 4. The pair of stepped guide holes 10 are correspondingly set with multiple pairs of positioning holes 11. Each stepped guide hole 10 is composed of a positioning hole 18 located on the inner side and a countersunk hole 17 located coaxially outside the positioning hole 18. The diameter of the countersunk hole 11 is larger than the diameter of the positioning hole 18.

[0038] When the pair of rotating arms 3 are in a vertical state, the inner side of a longer section of their inner side fits into the left and right end faces of the guide block 7. Thus, the maximum rotation angle of the pair of rotating arms 3 can be limited by the guide block 7, and the pair of rotating arms 3 in a vertical state can be effectively ensured to not interfere with the sliding limit slider 4.

[0039] The limiting pin 5 consists of a pin 20 located on the inner side and a pin head 21 coaxially fixedly connected to the outer end of the pin 20; the size of the pin 20 is adapted to the size of the positioning hole 18; the size of the pin head 21 is larger than the size of the pin 20 and is adapted to the size of the countersunk hole 11; the inner ends of a pair of limiting pins 5 are correspondingly inserted into a pair of guide holes 10, and when they are not fully inserted into a pair of guide holes 10 and enter a pair of corresponding stepped holes 11, they abut against the upper ends of a pair of limiting arms 14 on a pair of rotating arms 3.

[0040] As a preferred embodiment, the vertical sliding beam 2 has a T-shaped cross-section, with a pair of vertical recesses 8 symmetrically arranged on the left and right sides of its front end. Between the pair of vertical recesses 8, there is a vertical guide rail 9 protruding forward. The vertical guide rail 9 is slidably engaged with the open end of the T-shaped slide groove 16, and the connecting arm 6 is fixedly connected to the front end face of the vertical guide rail 9.

[0041] As a preferred embodiment, the connecting arm 6 is fixedly connected to the bottom of the front end face of the vertical guide rail 9.

[0042] Furthermore, in order to ensure stability and smoothness during relative rotation, the rotating shaft 12 is axially limited and radially rotatable on the outside of the corresponding bushing 13 by bearings.

[0043] In order to ensure that the vertical sliding beam can effectively act on the pair of rotating arms, and thus drive the rotation of the pair of rotating arms more efficiently, when the pair of rotating arms 3 rotate in opposite directions and reach a horizontal state, the shorter ends of the pair of rotating arms 3 are fitted with a gap, and the arc apex of the pair of arc-shaped protrusions 15 rotate into the interior of the T-shaped groove 16.

[0044] To ensure that the vertical sliding beam can smoothly drive the pair of rotating arms to rotate during the downward sliding process, the arc-shaped protrusion 15 is semi-circular.

[0045] To effectively improve the versatility of the device, there are eight pairs of positioning holes 11, with the distance between any two adjacent pairs of positioning holes 11 being the same.

[0046] As a preferred embodiment, the connecting arm 6 is cubic in shape.

[0047] To ensure that the inner end of the limiting pin can be smoothly inserted into the positioning hole 1, the outer end of the positioning hole 11 is provided with a chamfer structure.

[0048] As shown in Figure 6, the existing CPR compression depth limiting device 22 mainly consists of three support legs, a support frame supported on the three support legs, and a compression mechanism 23 located in the support frame. The support frame is formed by three transverse side beams 25 connected in sequence. In use, two corresponding CPR compression depth limiting devices 22 are fitted together on the inner side of two adjacent transverse side beams 25, and the transverse support beams 1 of the two CPR compression depth limiting devices 22 are horizontally fixedly connected to the two adjacent transverse side beams 25. At the same time, the two connecting arms 6 on the two CPR compression depth limiting devices 22 are fixedly connected to the periphery of the compression mechanism 23. In this way, the synchronous movement of the two CPR compression depth limiting devices 22 can drive the compression mechanism 23 to reciprocate within a limited stroke.

[0049] In this invention, the guide block is fixedly connected to the middle of the transverse support beam, and its front end is provided with a T-shaped sliding groove adapted to the vertical sliding beam. This ensures that the vertical sliding beam only moves vertically during movement and not laterally. Therefore, the pressing mechanism can be driven by the connecting arm to move only vertically, which helps ensure precise control of the pressing amplitude. The pair of rotating shafts provides a rotation center for the pair of rotating arms. The pair of rotating arms are rotatably connected to the outside of the pair of rotating shafts via a pair of bushings connected to their upper parts. Simultaneously, one end of each pair of rotating arms is provided with a pair of arc-shaped protrusions, and the other end is provided with a pair of limiting arms. During the downward sliding of the vertical sliding beam, the lower end face of the pair of arc-shaped protrusions simultaneously acts on the pair of rotating arms to drive the vertical sliding beam. The rotating arms rotate synchronously in opposite directions, and during sliding, they reach a vertical position. This allows a pair of limiting arms to limit the partially inserted limiting pins, thus defining the initial height during compression. The stepped guide hole consists of an outer countersunk hole and an inner positioning hole, ensuring that the limiting pins are fully inserted after compression begins, guaranteeing proper compression. A pair of positioning holes are located on the left and right end faces of the vertical sliding beam, corresponding to the stepped guide holes. After the limiting pins are fully inserted, the limiting slider connects to the vertical sliding beam, allowing the limiting block on the transverse support beam to lower the limiting slide, thus defining the ending position of the compression mechanism. The multiple pairs of positioning holes allow for adjustments to the starting position of compression based on different patients, greatly improving the device's versatility. This device directly limits the CPR compression depth through the use of mechanical components, effectively adjusting and controlling the compression depth and preventing complications such as chest fractures during CPR. At the same time, the device lowers the barrier to CPR, allowing bystanders without CPR training to perform CPR rescue, significantly increasing the success rate of resuscitation.

[0050] This device is suitable for use in densely populated and high-traffic public places such as schools and subway stations, as well as in the homes of high-risk groups. It will help promote the widespread adoption of this device and achieve the goal of "everyone can save lives" and "everyone dares to save lives".

Claims

1. A cardiopulmonary resuscitation (CPR) compression depth limiting device, comprising a transverse support beam (1), wherein the transverse support beam (1) is horizontally arranged, characterized in that, It also includes a guide block (7), a rotating shaft (12), a rotating arm (3), a vertical sliding beam (2), a limiting slider (4), and a limiting pin (5); the guide block (7) is fixedly connected to the middle of the transverse support beam (1), and a T-shaped groove (16) is provided at the front of the guide block (7), the size of the T-shaped groove (16) being adapted to the size of the cross-section of the vertical sliding beam (2); a pair of rotating shafts (12) are distributed on the left and right sides of the guide block (7), and their rear ends are fixedly connected vertically to the front end face of the transverse support beam (1); a pair of rotating arms (3) are distributed on the left and right sides of the guide block (7), and the lower part of the middle part is vertically fixedly connected to a pair of rotating shafts (12) at the position corresponding to the pair of rotating shafts (12). A pair of bushings (13) are rotatably fitted onto the outside of a pair of rotating shafts (12) through an axial through hole at their center; a pair of limiting arms (14) are fixedly connected to the longer end of a pair of rotating arms (3), and the pair of limiting arms (14) extend forward perpendicularly to the pair of rotating arms (3); a pair of arc-shaped protrusions (15) are fixedly connected to the shorter end of a pair of rotating arms (3), the arc-shaped protrusions (15) protruding arc-shapedly away from the length of the rotating arms (3) and towards each other; the vertical sliding beam (2) is vertically slidably assembled in a T-shaped groove (16); the middle part of the front end of the vertical sliding beam (2) is in the part corresponding to the T-shaped groove (16). The vertical sliding beam (2) is fixedly connected to a connecting arm (6); multiple pairs of positioning holes (11) are opened on the upper part of the left and right end faces of the vertical sliding beam (2), and the multiple pairs of positioning holes (11) are distributed in sequence in the vertical direction, and are set one-to-one on the left and right; the limiting slider (4) is located above the guide block (7), and a T-shaped groove two (19) is opened at its front, the size of the T-shaped groove two (19) is adapted to the size of the T-shaped groove one (16); the limiting slider (4) is vertically slidably fitted on the outside of the vertical sliding beam (2), and the left and right end faces of the limiting slider (4) are located inside the pair of rotating arms (3) in the vertical state, and are clearance-fitted with the pair of rotating arms (3) in the vertical state; the left and right end faces of the limiting slider (4) are located inside the pair of rotating arms (3) in the vertical state. A pair of stepped guide holes (10) are provided opposite to each other on the end face. The pair of stepped guide holes (10) are provided in correspondence with multiple pairs of positioning holes (11). Each stepped guide hole (10) is composed of a positioning hole two (18) located on the inner side and a countersunk hole (17) located on the outer side of the positioning hole two (18) on the coaxial side. The diameter of the countersunk hole (17) is larger than the diameter of the positioning hole two (18). The limiting pin (5) is composed of a pin rod (20) located on the inner side and a pin head (21) coaxially fixedly connected to the outer end of the pin rod (20). The size of the pin rod (20) is adapted to the size of the positioning hole two (18). The size of the pin head (21) is larger than the size of the pin rod (20) and is adapted to the size of the countersunk hole (17).The inner ends of a pair of limiting pins (5) are correspondingly inserted into a pair of stepped guide holes (10), and when they are not fully inserted into the pair of stepped guide holes (10) and have entered into the corresponding pair of positioning holes (11), they abut against the upper ends of a pair of limiting arms (14) on a pair of rotating arms (3).

2. The cardiopulmonary resuscitation compression depth limiting device according to claim 1, characterized in that, The vertical sliding beam (2) has a T-shaped cross section, with a pair of vertical recesses (8) on the left and right sides of its front end. Between the pair of vertical recesses (8) there is a vertical guide rail (9) protruding forward. The vertical guide rail (9) is slidably engaged with the open end of the T-shaped slide groove (16), and the connecting arm (6) is fixedly connected to the front end face of the vertical guide rail (9).

3. The cardiopulmonary resuscitation compression depth limiting device according to claim 2, characterized in that, The connecting arm (6) is fixedly connected to the bottom of the front end face of the vertical guide rail (9).

4. A cardiopulmonary resuscitation compression depth limiting device according to any one of claims 1 to 3, characterized in that, The rotating shaft (12) is axially limited by the bearing and radially rotatable, and is fitted onto the outside of the corresponding bushing (13).

5. A cardiopulmonary resuscitation compression depth limiting device according to claim 4, characterized in that, When a pair of rotating arms (3) rotate in opposite directions and reach a horizontal state, the shorter ends of the pair of rotating arms (3) are fitted with a clearance, and the arc apex of a pair of arc-shaped protrusions (15) rotates into the interior of the T-shaped groove (16).

6. A cardiopulmonary resuscitation compression depth limiting device according to claim 5, characterized in that, The arc-shaped protrusion (15) is semi-circular.

7. A cardiopulmonary resuscitation compression depth limiting device according to claim 6, characterized in that, There are eight pairs of positioning holes (11), and the distance between any two adjacent pairs of positioning holes (11) is the same.

8. A cardiopulmonary resuscitation compression depth limiting device according to claim 7, characterized in that, The connecting arm (6) is cubic in shape.

9. A cardiopulmonary resuscitation compression depth limiting device according to claim 8, characterized in that, The outer ends of the positioning holes (11) are all provided with chamfered structures.

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