A pressing mechanism with pressure detection function and a cardiopulmonary resuscitation pressing device

Abstract

The utility model relates to medical instrument technical field discloses a kind of pressing mechanism and cardiopulmonary resuscitation pressing device with pressure detection function, comprising: fixed cylinder, its inside activity is equipped with pressing rod;The one end of the pressing rod that extends fixed cylinder is equipped with pressing head, pressure sensor is equipped in the pressing head, signal spring wire is connected on the pressure sensor, another end of the signal spring wire passes through pressing head, pressing rod and fixed cylinder setting. Pressure sensor uses signal spring wire to carry out signal transmission, can guarantee the stability of signal transmission under the condition that pressing head high-speed reciprocating, signal spring wire is not easy to damage, improve the service life of pressing mechanism, and signal spring wire does not need other auxiliary structure, reduce the overall volume of pressing mechanism, more convenient for first-aid occasion use.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a pressing mechanism with pressure detection function and a cardiopulmonary resuscitation pressing device. Background Technology

[0002] A cardiopulmonary resuscitation (CPR) compression device uses mechanical action to replace manual chest compressions. It controls the reciprocating motion of the compression head, thereby making contact with the human body to perform chest compressions.

[0003] In existing technologies, it is rare to install a pressure sensor inside the compression head to detect the compression force. This is because the pressure sensor needs to communicate with the control unit of the CPR compression device via a signal line so that the control unit can control the up-and-down reciprocating motion (i.e., axial reciprocating motion) of the compression head based on the data detected by the pressure sensor. During operation, the compression head will reciprocate up and down, causing the pressure sensor inside the compression head to also reciprocate up and down. During this movement, the signal line is prone to bending and damage, resulting in unstable signal transmission.

[0004] Therefore, it is necessary to propose a compression mechanism and cardiopulmonary resuscitation compression device with pressure detection function to at least partially solve the problems existing in the prior art. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, this utility model provides a pressing mechanism with pressure detection function, comprising: a fixed cylinder, wherein a pressing rod is movably disposed inside the fixed cylinder; a pressing head is provided at one end of the pressing rod extending out of the fixed cylinder, a pressure sensor is provided inside the pressing head, a signal spring wire is connected to the pressure sensor, and the other end of the signal spring wire passes through the pressing head, the pressing rod and the fixed cylinder.

[0007] Preferably, the signal spring wire includes: a first straight segment, a spiral segment, and a second straight segment connected in sequence, wherein the end of the first straight segment is connected to a pressure sensor, and the end of the second straight segment extends out of the fixed cylinder.

[0008] Preferably, the pressing head has a first through hole corresponding to the signal spring wire, the pressing rod has a second through hole corresponding to the signal spring wire, and a receiving space is provided between the top of the pressing rod and the inner top of the fixed cylinder, with the spiral segment located within the receiving space.

[0009] Preferably, the outer side of the pressing rod is threaded with a driving nut, and the driving nut is connected to the driving body disposed in the fixed cylinder.

[0010] Preferably, the driving body includes: a sleeve sleeved on the outside of the driving nut, the bottom of the sleeve being connected to the bottom of the driving nut by a fixing member, a bearing being connected between the sleeve and the fixed cylinder, and a frameless motor being sleeved on the outside of the sleeve, the frameless motor being disposed inside the fixed cylinder.

[0011] Preferably, the pressing head includes: an adapter, one end of which is connected to the pressing rod, and the other end is provided with a pressure sensor, and a fixing part is sleeved on the outside of this end. The pressure sensor is connected to the adapter and the fixing part respectively, and the end of the fixing part away from the pressing rod is provided with a contact part.

[0012] Preferably, one end of the adapter is provided with a first hole for connecting to the pressing rod, and the other end is provided with a second hole for installing a pressure sensor. A partition is formed between the first hole and the second hole, and the partition is provided with a first through hole that allows the signal spring wire to pass through.

[0013] Preferably, the top of the pressure sensor is connected to the partition plate by a first screw, and the bottom of the pressure sensor is connected to the fixing part by a second screw;

[0014] The adapter has an elongated hole on its side, and the side of the fixing part is limited to the elongated hole by at least two third screws.

[0015] Preferably, the side of the fixed cylinder is provided with a limiting hole extending along its axial direction, and the pressing rod is provided with a limiting member, which is slidably connected to the limiting hole.

[0016] A cardiopulmonary resuscitation (CPR) compression device includes the compression mechanism with pressure detection function described in this invention.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The pressure-detecting compression mechanism and cardiopulmonary resuscitation compression device described in this utility model use a signal spring wire for signal transmission, which ensures the stability of signal transmission even when the compression head is in high-speed reciprocating motion. The signal spring wire is not easily damaged, which increases the service life of the compression mechanism. Furthermore, the signal spring wire does not require other auxiliary structures, which reduces the overall size of the compression mechanism and makes it more convenient for use in emergency situations.

[0019] The pressure-detecting compression mechanism and cardiopulmonary resuscitation compression device of this utility model will be partly apparent from the following description, and partly understood by those skilled in the art through research and practice of this utility model. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the internal structure of the pressing mechanism with pressure detection function described in this utility model;

[0022] Figure 2 This is a schematic diagram of the signal spring wire in the pressing mechanism with pressure detection function described in this utility model;

[0023] Figure 3 This is a schematic cross-sectional view of the pressing rod in the pressing mechanism with pressure detection function described in this utility model.

[0024] Figure 4 This is a schematic diagram of the connection structure of the driving body, driving nut, and pressing rod in the fixed cylinder of the pressing mechanism with pressure detection function described in this utility model.

[0025] Figure 5 This is a schematic diagram of the drive nut in the pressing mechanism with pressure detection function described in this utility model;

[0026] Figure 6 This is a schematic diagram of the sleeve in the pressing mechanism with pressure detection function described in this utility model;

[0027] Figure 7 This is a schematic diagram of the pressing head in the pressing mechanism with pressure detection function described in this utility model;

[0028] Figure 8 This is a schematic diagram of the adapter in the pressing mechanism with pressure detection function described in this utility model;

[0029] Figure 9 This is a schematic diagram of the fixed cylinder in the pressing mechanism with pressure detection function described in this utility model;

[0030] Figure 10 This is a schematic diagram of the external structure of the pressing mechanism with pressure detection function described in this utility model;

[0031] Figure 11 This is an exploded structural diagram of the pressing mechanism with pressure detection function described in this utility model. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0033] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0034] like Figure 1 As shown, this utility model provides a pressing mechanism with pressure detection function, including: a fixed cylinder 1, in which a pressing rod 2 is movably provided; a pressing head 3 is provided at one end of the pressing rod 2 extending out of the fixed cylinder 1, a pressure sensor 4 is provided inside the pressing head 3, a signal spring wire 5 is connected to the pressure sensor 4, and the other end of the signal spring wire 5 passes through the pressing head 3, the pressing rod 2 and the fixed cylinder 1.

[0035] Among them, the signal spring wire 5 is a device connection wire that works by utilizing its stretchability and is capable of signal transmission, such as a common telephone line;

[0036] The pressing rod 2 can reciprocate axially within the fixed cylinder 1. The pressing head 3 is used to contact the human body. The reciprocating motion of the pressing rod 2 drives the pressing head 3 and the pressure sensor 4 to move synchronously to perform cardiopulmonary resuscitation (CPR). The pressure sensor 4 is connected to the control unit of the CPR device through a signal spring wire 5, so that during CPR, the pressure sensor 4 can detect the pressure value of the pressing head 3 in contact with the human body in real time and feed the real-time detected pressure value back to the control unit, which then controls the pressing mechanism.

[0037] During the reciprocating motion of the pressing head 3, the signal spring wire 5 elastically expands and contracts with the movement of the pressing head 3, preventing the signal spring wire 5 from bending and being damaged, thus ensuring the stability of the signal transmission of the pressure sensor 3.

[0038] Through the above design, the pressure sensor 4 uses a signal spring wire 5 for signal transmission, which can ensure the stability of signal transmission even when the pressing head 3 is in high-speed reciprocating motion. The signal spring wire 5 is not easily damaged, which improves the service life of the pressing mechanism. Furthermore, the signal spring wire 5 does not require other auxiliary structures, which reduces the overall size of the pressing mechanism.

[0039] like Figure 2 As shown, in one embodiment, the signal spring wire 5 includes a first straight segment 51, a spiral segment 52 and a second straight segment 53 connected in sequence. The end of the first straight segment 51 is connected to the pressure sensor 4, and the end of the second straight segment 53 extends out of the fixed cylinder 1.

[0040] During the reciprocating motion of the pressing head 3, the extension and retraction are mainly achieved through the spiral segment 52 to coordinate with the movement of the pressure sensor 4 with the pressing head 3, so that the signal spring wire 5 as a whole will not be bent or damaged.

[0041] In addition, during the reciprocating motion of the pressing head 3, the fixed cylinder 1 is in a fixed state. The top end of the signal spring wire 5 can be fixedly connected to the fixed cylinder 1, and the bottom end can be fixedly connected to the pressing head 3. Thus, only the part of the signal spring wire 5 inside the fixed cylinder 1 and the pressing rod 2 needs to elastically expand and contract, preventing the signal spring wire 5 outside the fixed cylinder 1 from being pulled. It can also avoid the part of the signal spring wire 5 connected to the pressure sensor 4 from being pulled, further ensuring the stability of signal transmission.

[0042] like Figure 1 , Figure 3 and Figure 8 As shown, in one embodiment, the pressing head 3 is provided with a first through hole 314 corresponding to the signal spring wire 5, the pressing rod 2 is provided with a second through hole 22 corresponding to the signal spring wire 5, and a receiving space 6 is provided between the top of the pressing rod 2 and the inner top of the fixed cylinder 1, and the spiral segment 52 is provided in the receiving space 6.

[0043] The first straight segment 51 of the signal spring wire 5 passes through the first through hole 314 so that the end of the first straight segment 51 is connected to the pressure sensor 4 inside the pressing head 3. The first straight segment 51 of the signal spring wire 5 passes through the second through hole 22. The spiral segment 52 is located in the receiving space 6. The second straight segment 53 passes through the fixed cylinder 1 and is connected to the control unit.

[0044] In addition, the first straight segment 51 is limited and connected to the first through hole 314 of the pressing head 3, for example, by adhesive, and the second straight segment 53 is limited and connected to the first through hole at the top of the fixed cylinder 1, for example, by adhesive.

[0045] like Figure 1As shown, in one embodiment, the outer side of the pressing rod 2 is threaded with a driving nut 7, and the driving nut 7 is connected to the driving body 8 disposed in the fixed cylinder 1.

[0046] The outer side of the pressing rod 2 is provided with an external thread that connects to the drive nut 7. The pressing rod 2 is connected to the fixed cylinder 1 at the upper limit in the radial direction. Therefore, when the pressing rod 2 needs to reciprocate, the drive nut 7 is rotated by the drive body 8, and the pressing rod 2, which is threaded to the drive nut 7, reciprocates along the axial direction.

[0047] like Figure 4 As shown, the driving body 8 further includes: a sleeve 81 sleeved on the outside of the driving nut 7, the bottom of the sleeve 81 being connected to the bottom of the driving nut 7 by a fixing member 82, a bearing 83 being connected between the sleeve 81 and the fixed cylinder 1, and a frameless motor 84 being sleeved on the outside of the sleeve 81, the frameless motor 84 being disposed inside the fixed cylinder 1.

[0048] To further reduce the size of the compression mechanism and facilitate its use in emergency situations, the drive body 8 is installed inside the fixed cylinder 1;

[0049] The advantage of using a frameless motor 84 is that its structure is simple and compact, which can reduce the space occupied. The frameless motor 84 includes a stator 841 connected to the fixed cylinder 1 and a rotor 842 connected to the sleeve 81. The stator 841 is fixedly connected to the inner wall of the fixed cylinder 1, and the rotor 842 can drive the sleeve 81 to rotate synchronously.

[0050] like Figure 5 and Figure 6 As shown, the bottom of the drive nut 7 is provided with a fixing plate, which can support the bottom of the sleeve 81. The fixing plate is provided with multiple round holes, and the bottom of the sleeve 81 is provided with multiple threaded holes. The fixing plate and the sleeve 81 are connected by a fixing member 82, which is a fixing screw.

[0051] Since the sleeve 81 needs to rotate relative to the fixed cylinder 1, bearings 83 are respectively provided on the outer side of the top and bottom ends of the sleeve 81. The bearings 83 are between the fixed cylinder 1 and the sleeve 81 to ensure the stability of the rotation of the sleeve 81.

[0052] When the frameless motor 84 is working, its rotor 842 can drive the sleeve 81 to rotate, thereby causing the drive nut 7, which is fixedly connected to the sleeve 81, to rotate synchronously, so as to realize the reciprocating motion of the pressing rod 2.

[0053] like Figure 4 and Figure 9As shown, the fixed cylinder 1 further includes: a top cylinder 13, a connecting cylinder 14 and a base 15 connected sequentially from top to bottom, which are fixed by bolts; the frameless motor 84 is installed in the connecting cylinder 14, and two bearings 83 are respectively installed between the top cylinder 13 and the sleeve 81, and between the base 15 and the sleeve 81.

[0054] A retaining ring 16 is provided between the top of the outer ring of the bearing 83 located below and the bottom of the connecting cylinder 14. The outer ring of the bearing 83 is pressed between the retaining ring 16 and the base 15, and the inner ring of the bearing 83 is pressed between the sleeve 81 and the base 15.

[0055] The inner ring of the upper bearing 83 is provided with a retaining ring 17. The retaining ring 17 is engaged with the side of the sleeve 81 for positioning. The inner ring of the bearing 83 is pressed between the retaining ring 17 and the sleeve 81, and the outer ring of the bearing 83 is pressed against the side wall of the top cylinder 13.

[0056] like Figure 7 As shown, in one embodiment, the pressing head 3 includes: an adapter 31, one end of which is connected to the pressing rod 2, and the other end is provided with a pressure sensor 4, and a fixing part 32 is sleeved on the outside of this end. The pressure sensor 4 is connected to the adapter 31 and the fixing part 32 respectively, and the fixing part 32 is provided with a contact part 33 at the end away from the pressing rod 2.

[0057] One end of the adapter 31 is fixedly connected to the pressing rod 2, and the other end is limitedly connected to the fixing part 32. The bottom of the fixing part 32 is provided with a ring plate, and the contact part 33 is sleeved on the ring plate. The contact part 33, which is used to contact the human body, can be made of rubber.

[0058] like Figure 8 As shown, further, one end of the adapter 31 is provided with a first hole 311 for connecting to the pressing rod 2, and the other end is provided with a second hole 312 for installing the pressure sensor 4. A partition 313 is formed between the first hole 311 and the second hole 312. The partition 313 is provided with a first through hole 314 that allows the signal spring wire 5 to pass through.

[0059] The end of the pressing rod 2 can be sleeved in the first hole 311 of the adapter 31. The adapter 31 and the pressing rod 2 can be connected by snap-fit, interference fit or screw. The signal spring wire 5 connected to the pressure sensor 4 passes through the first through hole 314, which can limit the connection between the signal spring wire 5 and the first through hole 314, for example by fixing with adhesive.

[0060] like Figure 7 and Figure 11 As shown, the top of the pressure sensor 4 is connected to the partition plate 313 by a first screw 34, and the bottom of the pressure sensor 4 is connected to the fixing part 32 by a second screw 35.

[0061] The adapter 31 has an elongated hole 315 on its side, and the side of the fixing part 32 is limited and connected to the elongated hole 315 by at least two third screws 36.

[0062] The pressure sensor 4 is connected between the partition plate 313 and the bottom surface of the fixing part 32 by the first screw 34 and the second screw 35. The contact part 33 is provided with a second through hole through which the second screw 35 can pass. The second screw 35 passes through the second through hole from bottom to top, connecting the fixing part 32 and the pressure sensor 4.

[0063] The third screw 36 is threaded to the side of the fixing part 32, and its inwardly protruding part passes through the elongated hole 315, which extends axially in the adapter 31. After the pressing head 3 comes into contact with the human body and is pressed, the pressure sensor 4 is pressed to detect the pressure. At the same time, the fixing part 32 and the contact part 33 tend to move upward after being subjected to force. Then the third screw 36 will move upward in the elongated hole 315. The elongated hole 315 plays a limiting role for the third screw 36 and prevents the fixing part 32 from falling off.

[0064] like Figure 10 As shown, in one embodiment, the side of the fixed cylinder 1 is provided with a limiting hole 11 extending along its axial direction, and the pressing rod 2 is provided with a limiting member 21, which is slidably connected to the limiting hole 11.

[0065] The pressing rod 2 reciprocates along the axial direction. Its movement is limited by the limiting hole 11 and the limiting member 21, thereby ensuring that the pressing rod 2 will not rotate with the driving nut 7.

[0066] like Figure 1 As shown, the side of the fixed cylinder 1 is further provided with a detection hole 12 extending along its axial direction, the side of the pressing rod 2 is further provided with a position detection piece 9 corresponding to the detection hole 12, and the outer side of the fixed cylinder 1 is provided with a position detection plate 10.

[0067] The position detection plate 9 can reciprocate synchronously with the pressing rod 2, and cooperates with the position detection plate 10 to detect the position of the reciprocating motion of the pressing rod 2, so as to provide feedback to the control unit of the cardiopulmonary resuscitation compression device.

[0068] A cardiopulmonary resuscitation (CPR) compression device includes the compression mechanism with pressure detection function described in this invention.

[0069] This invention relates to a cardiopulmonary resuscitation (CPR) compression device. By placing a pressure sensor 4 inside the compression head 3, it can move synchronously with the compression head 3 to detect the compression pressure over time. The signal spring wire 5 connected to the pressure sensor 4 can be placed inside the compression rod 2 and the fixed cylinder 1. This eliminates the need for additional structures, ensuring the safety and stability of the signal wire, preventing bending and damage, extending the service life of the CPR compression device, and reducing its size. Furthermore, placing the drive body 8 inside the fixed cylinder 1 simplifies the structure of the compression mechanism, further reducing its size and making it more convenient for emergency use.

[0070] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0071] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0072] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by this utility model, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A pressing mechanism having a pressure detection function, characterized by comprising: The utility model relates to a pressure sensor, including: The fixed cylinder (1) inside activity is equipped with the press bar (2), the press bar (2) one end of fixed cylinder (1) is equipped with the press head (3), the press head (3) is equipped with pressure sensor (4) in, pressure sensor (4) is connected with signal spring wire (5) on, signal spring wire (5) other end passes through press head (3), press bar (2) and fixed cylinder (1) setting.

2. The pressing mechanism with a pressure detection function according to claim 1, characterized by, Signal spring wire (5) includes: first straight line section (51), spiral line section (52) and second straight line section (53) are connected in sequence, first straight line section (51) end is connected with pressure sensor (4), second straight line section (53) end is set out of fixed cylinder (1).

3. The pressing mechanism with a pressure detection function according to claim 2, characterized by, The press head (3) is equipped with the first through -hole (314) corresponding with signal spring wire (5) in, the press bar (2) is equipped with the second through -hole (22) corresponding with signal spring wire (5) in, the top of press bar (2) and the inner top of fixed cylinder (1) are equipped with the accommodation space (6) between, spiral line section (52) is located in the accommodation space (6).

4. The pressing mechanism with a pressure detection function according to claim 1, characterized by, The outer side of press bar (2) is threadedly connected with drive nut (7), drive nut (7) is connected with the drive main part (8) set up in fixed cylinder (1).

5. The pressing mechanism with a pressure detection function according to claim 4, characterized by, Drive main part (8) includes: sleeve (81) is set up in the outer side of drive nut (7), the bottom of sleeve (81) is connected with the bottom of drive nut (7) through fixing piece (82), bearing (83) is connected between sleeve (81) and fixed cylinder (1), frameless motor (84) is sleeved on the outer side of sleeve (81), frameless motor (84) is set up in the inside of fixed cylinder (1).

6. The pressing mechanism with a pressure detection function according to claim 1, characterized by, The press head (3) includes: adapter (31), one end is connected with press bar (2), the other end is equipped with pressure sensor (4) inside, and the outer side of this end is sleeved with fixed part (32), pressure sensor (4) is connected with adapter (31) and fixed part (32) respectively, the end away from press bar (2) of fixed part (32) is equipped with contact part (33).

7. The pressing mechanism with a pressure detection function according to claim 6, characterized by, One end of adapter (31) is equipped with first hole (311) connected with press bar (2), the other end is equipped with second hole (312) for installing pressure sensor (4), the first hole (311) and second hole (312) form baffle (313) between, the first through -hole (314) that can make signal spring wire (5) pass through is equipped on baffle (313).

8. The pressing mechanism with a pressure detection function according to claim 7, characterized by, The top of pressure sensor (4) is connected with baffle (313) through first screw (34), the bottom of pressure sensor (4) is connected with fixed part (32) through second screw (35); The side of adapter (31) is equipped with long hole (315), the side of fixed part (32) is limit connection through at least two third screws (36) with long hole (315).

9. The pressing mechanism with a pressure detection function according to claim 1, characterized by, The side surface of the fixed cylinder (1) is provided with a limiting hole (11) extending along the axial direction, and the pressing rod (2) is provided with a limiting piece (21) in sliding connection with the limiting hole (11).

10. A cardiopulmonary resuscitation compression device, characterized by The pressing mechanism with pressure detection function comprises the pressing mechanism with pressure detection function according to any one of claims 1-9.

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