Tapping device for clearance of respiratory tract after cardiac surgery

Abstract

The percussion device comprises a sleeve, a front end cover, a rear end cover, an air bag, a spring, a piston, a piston rod and a permanent magnet, the front end cover and the rear end cover are arranged at the end of the sleeve, the air bag is arranged at one end of the piston rod, the piston rod penetrates through the piston, the spring is arranged between the air bag and the piston and arranged on the piston rod in a sleeving mode, and the permanent magnet is arranged in the sleeve. The permanent magnet is arranged on the face, away from the air bag, of the piston, the electromagnetic coil and the pressure sensor are arranged on the rear end cover, the cushion pad is arranged on the contact face of the pressure sensor, and when the piston rod moves towards the rear end cover, the end, pointing to the rear end cover, of the piston rod makes contact with the cushion pad. The piston rod pushes the head of the airbag to penetrate through the front end cover. Therefore, the damping system can be matched with the resonance frequency of the lung of the human body to enhance the sputum excretion efficiency, effective sputum excretion is guaranteed, rib injuries are avoided, and the clinical applicability and portability are improved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and specifically refers to a percussor for airway clearance after cardiac surgery. Background Art

[0002] In the field of cardiac surgery, postoperative patients often have factors such as the influence of anesthesia, incision pain, and weakened respiratory muscle function, resulting in the retention of airway secretions, increasing the risks of complications such as pulmonary infection and atelectasis. Therefore, effective airway clearance care is an important part of cardiac postoperative rehabilitation.

[0003] Currently, commonly used airway clearance methods in clinical practice include manual percussion for sputum removal, mechanical vibration for sputum removal, etc. Manual percussion for sputum removal depends on the experience and techniques of nursing staff, with problems such as insufficient uniformity of force and poor stability of frequency, and it is difficult to accurately match the physiological characteristics of different patients. Although mechanical vibration sputum removal devices can provide vibration at a certain frequency, some devices have problems such as complex structures, limited operation flexibility, and imperfect pressure feedback mechanisms, and there may be some unnecessary problems in actual applications. Summary of the Invention

[0004] The present invention aims to solve at least to a certain extent the technical problems in the above-mentioned technologies.

[0005] For this purpose, the present invention discloses a percussor for airway clearance after cardiac surgery, including:

[0006] A sleeve;

[0007] An open front end cover and a closed rear end cover, which are respectively arranged at two ends of the sleeve;

[0008] An airbag, a spring, a piston, a piston rod, and an annular permanent magnet, which are respectively arranged inside the sleeve. Among them,

[0009] The airbag is arranged at one end of the piston rod, the piston rod penetrates through the piston, the spring is arranged between the airbag and the piston and sleeved on the piston rod, and the permanent magnet is arranged on the side of the piston away from the airbag;

[0010] An electromagnetic coil and a pressure sensor, which are respectively arranged on the rear end cover;

[0011] A buffer pad, which is arranged on the contact surface of the pressure sensor;

[0012] When the piston rod moves towards the rear end cover, the end of the piston rod pointing to the rear end cover contacts the buffer pad;

[0013] When the piston rod moves towards the front end cover, the piston rod pushes the head of the airbag through the front end cover;

[0014] A handle, integrally formed with the sleeve;

[0015] A push-button switch and a control circuit board, respectively arranged on the handle.

[0016] The percussor for airway clearance after cardiac surgery disclosed by the present invention can match the resonance frequency of the human lungs through a damping system to enhance the sputum excretion efficiency, ensure effective sputum excretion, avoid rib injuries, and improve clinical applicability and portability.

[0017] In addition, the percussor for airway clearance after cardiac surgery disclosed by the present invention may further have the following additional technical features:

[0018] In an embodiment of the present invention, the airbag, the piston rod, the spring, the piston, the permanent magnet, the electromagnetic coil, the pressure sensor and the sleeve are on the same axis.

[0019] In an embodiment of the present invention, lubricating graphite rings are provided at the contact between the airbag and the sleeve, the contact between the piston rod and the piston, and the contact between the piston and the sleeve.

[0020] In an embodiment of the present invention, it further includes:

[0021] A retaining ring, integrally formed with the handle and the sleeve.

[0022] In an embodiment of the present invention, the natural frequency of the damping system composed of the airbag, the spring, the piston, the piston rod and the permanent magnet is the same as the alternating current frequency of the electromagnetic coil, and both are within 10 - 20 Hz.

[0023] In an embodiment of the present invention, when the piston rod impacts the buffer pad, the pressure sensor generates impact pressure data and inputs it into the control circuit board, where

[0024] if the impact pressure data is greater than or equal to the preset threshold of the rib safety pressure in the control circuit board, the control circuit board reduces the current passing through the electromagnetic coil; if the impact pressure data is less than the preset threshold of the effective sputum excretion pressure in the control circuit board, the control circuit board increases the current passing through the electromagnetic coil.

[0025] The additional content and advantages of the present invention will be given in the following description, or understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solutions and beneficial effects of the present invention will become obvious and easy to understand from the following content in combination with the drawings, where:

[0027] Figure 1 This is a schematic structural view of the percussion device for airway clearance after cardiac surgery according to the present invention;

[0028] Figure 2 This is another schematic structural view of the percussion device for airway clearance after cardiac surgery according to the present invention;

[0029] Figure 3 This is a schematic structural view of the sleeve, handle, button switch, control circuit board and retaining ring of the percussion device for airway clearance after cardiac surgery according to the present invention;

[0030] As shown in the figure:

[0031] 1 - Sleeve, 2 - Front end cover, 3 - Rear end cover, 4 - Airbag, 5 - Spring, 6 - Piston, 7 - Piston rod, 8 - Permanent magnet, 9 - Electromagnetic coil, 10 - Pressure sensor, 11 - Buffer pad, 12 - Handle, 13 - Button switch, 14 - Control circuit board, 15 - Lubricating graphite ring, 16 - Retaining ring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] Next, a percussion device for airway clearance after cardiac surgery disclosed by the present invention will be described with reference to the accompanying drawings;

[0034] As Figure 1 、 Figure 2 And Figure 3 shown, a percussion device for airway clearance after cardiac surgery includes:

[0035] Sleeve 1;

[0036] An open front end cover 2 and a closed rear end cover 3 are respectively arranged at two ends of the sleeve 1;

[0037] An airbag 4, a spring 5, a piston 6, a piston rod 7 and an annular permanent magnet 8 are respectively arranged inside the sleeve 1. Among them,

[0038] The airbag 4 is arranged at one end of the piston rod 7. The piston rod 7 penetrates through the piston 6. The spring 5 is arranged between the airbag 4 and the piston 6 and sleeved on the piston rod 7. The permanent magnet 8 is arranged on the side of the piston 6 away from the airbag 4;

[0039] An electromagnetic coil 9 and a pressure sensor 10 are respectively arranged on the rear end cover 3;

[0040] The buffer pad 11 is arranged on the contact surface of the pressure sensor 10;

[0041] When the piston rod 7 moves towards the rear end cover 3, one end of the piston rod 7 pointing to the rear end cover 3 contacts the buffer pad 11;

[0042] When the piston rod 7 moves towards the front end cover 2, the piston rod 7 pushes the head of the airbag 4 through the front end cover 2;

[0043] The handle 12 is integrally formed with the sleeve 1;

[0044] The push-button switch 13 and the control circuit board 14 are respectively arranged on the handle 12;

[0045] The retaining ring 16 is integrally formed with the handle 12 and the sleeve 1;

[0046] The airbag 4, the piston rod 7, the spring 5, the piston 6, the permanent magnet 8, the electromagnetic coil 9, the pressure sensor 10 and the sleeve 1 are on the same axis;

[0047] Lubricating graphite rings 15 are arranged at the contact positions between the airbag 4 and the sleeve 1, between the piston rod 7 and the piston 6, and between the piston 6 and the sleeve 1;

[0048] The natural frequency of the damping system composed of the airbag 4, the spring 5, the piston 6, the piston rod 7 and the permanent magnet 8 is the same as the alternating current frequency of the electromagnetic coil 9, and both are within 10 - 20 Hz;

[0049] When the piston rod 7 impacts the buffer pad 11, the pressure sensor 10 generates impact pressure data and inputs it into the control circuit board 14, where,

[0050] If the impact pressure data is greater than or equal to the preset threshold of the rib safety pressure in the control circuit board 14, the control circuit board 14 reduces the current passing through the electromagnetic coil 9; if the impact pressure data is less than the preset threshold of the effective sputum drainage pressure in the control circuit board 14, the control circuit board 14 increases the current passing through the electromagnetic coil 9.

[0051] Specifically, when the caregiver starts the device through the push-button switch 13 on the handle 12, the control circuit board 14 inputs an alternating current with a frequency of 10 - 20 Hz to the electromagnetic coil 9;

[0052] The electromagnetic coil 9 is coaxially arranged with the ring-shaped permanent magnet 8, and the alternating magnetic field generated by the alternating current forms a periodic electromagnetic repulsive force and attractive force with the permanent magnet 8:

[0053] When the magnetic field generated by the electromagnetic coil 9 and the permanent magnet 8 are of the same pole, the two repel each other and push the piston 6 to move towards the front end cover 2;

[0054] When the magnetic poles of the magnetic field are opposite, the two attract each other, pulling the piston 6 to move towards the rear end cover 3;

[0055] Thus, the piston 6 makes a reciprocating linear motion within the sleeve 1, and its motion frequency is exactly the same as the alternating current frequency of the electromagnetic coil 9, ensuring that the natural frequency of the damping system composed of the airbag 4, the spring 5, the piston 6, the piston rod 7, and the permanent magnet 8 matches the resonance frequency of the human lungs (10 - 20 Hz), and enhancing the sputum loosening efficiency through the resonance effect.

[0056] The reciprocating motion of the piston 6 is transmitted to the piston rod 7 and the airbag 4 through the spring 5: when the piston 6 moves forward, the spring 5 is in a compressed state, pushing the piston rod 7 to drive the airbag 4 to move towards the front end cover 2. Since the front end cover 2 is open, the head of the airbag 4 passes through the front end cover 2 and strikes the patient's chest. The impact force forms a buffer through the elastic deformation of the spring 5, avoiding damage caused by rigid impact. At this time, the friction between the piston rod 7 and the piston 6 is reduced by the lubricating graphite ring 15 to ensure smooth movement;

[0057] When the piston 6 moves backward, the spring 5 is in a stretched state, the piston rod 7 retracts with the piston 6, and the airbag 4 disengages from the chest. When the end of the piston rod 7 strikes the buffer pad 11 of the rear end cover 3, the impact force is transmitted to the pressure sensor 10 through the buffer pad 11, and the pressure sensor 10 generates impact pressure data in real time and transmits it to the control circuit board 14.

[0058] The control circuit board 14 is built - in with a dual - pressure threshold algorithm to dynamically adjust the electromagnetic driving force based on the data of the pressure sensor 10:

[0059] If the pressure data ≥ the preset threshold of the rib safety pressure in the control circuit board 14 (such as set to 30 N), it indicates that the percussion force is too large. The control circuit board 14 automatically reduces the current of the electromagnetic coil 9, reduces the electromagnetic driving force, thereby reducing the movement amplitude of the piston 6 to avoid rib injury;

[0060] If the pressure data < the preset threshold of the effective sputum - discharging pressure in the control circuit board 14 (such as set to 15 N), it indicates that the force is insufficient. The control circuit board 14 increases the current, enhances the driving force, and increases the percussion force of the airbag 4 to ensure effective sputum loosening;

[0061] Through the above - mentioned closed - loop feedback, the device can adapt to the physiological characteristics of different patients and achieve precise force control.

[0062] In summary, according to the percussor for postoperative respiratory tract clearance of the heart disclosed in the present invention, it can match the resonance frequency of the human lungs through the damping system to enhance the sputum - discharging efficiency, ensure effective sputum discharge, avoid rib injury, and improve clinical applicability and portability.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A percussion device for airway clearance after cardiac surgery, characterized in that, Comprising: A sleeve (1); An open front end cap (2) and a closed rear end cap (3), which are respectively arranged on two ends of the sleeve (1); An airbag (4), a spring (5), a piston (6), a piston rod (7) and an annular permanent magnet (8), which are respectively arranged inside the sleeve (1), wherein, The airbag (4) is arranged at one end of the piston rod (7), the piston rod (7) penetrates through the piston (6), the spring (5) is arranged between the airbag (4) and the piston (6) and sleeved on the piston rod (7), and the permanent magnet (8) is arranged on a surface of the piston (6) away from the airbag (4); An electromagnetic coil (9) and a pressure sensor (10), which are respectively arranged on the rear end cap (3); A buffer pad (11), which is arranged on a contact surface of the pressure sensor (10); When the piston rod (7) moves towards the rear end cap (3), one end of the piston rod (7) pointing to the rear end cap (3) contacts the buffer pad (11); When the piston rod (7) moves towards the front end cap (2), the piston rod (7) pushes the head of the airbag (4) through the front end cap (2); A handle (12), which is integrally formed with the sleeve (1); A button switch (13) and a control circuit board (14), which are respectively arranged on the handle (12).

2. The percussion device for airway clearance after cardiac surgery according to claim 1, wherein, The airbag (4), the piston rod (7), the spring (5), the piston (6), the permanent magnet (8), the electromagnetic coil (9), the pressure sensor (10) and the sleeve (1) are on the same axis.

3. The percussion device for airway clearance after cardiac surgery according to claim 2, wherein, Lubricating graphite rings (15) are arranged at contact positions between the airbag (4) and the sleeve (1), between the piston rod (7) and the piston (6), and between the piston (6) and the sleeve (1).

4. The percussion device for airway clearance after cardiac surgery according to claim 1, wherein, Further comprising: A retaining ring (16), which is integrally formed with the handle (12) and the sleeve (1).

5. The percussion device for airway clearance after cardiac surgery according to claim 1, characterized in that, The natural frequency of the damping system composed of the airbag (4), the spring (5), the piston (6), the piston rod (7) and the permanent magnet (8) is the same as the alternating current frequency of the electromagnetic coil (9), and both are within 10 - 20 Hz.

6. The percussion device for airway clearance after cardiac surgery according to claim 1, wherein, When the piston rod (7) impacts the buffer pad (11), the pressure sensor (10) generates impact pressure data and inputs it into the control circuit board (14), wherein, If the impact pressure data is greater than or equal to a preset threshold value of rib safety pressure in the control circuit board (14), the control circuit board (14) reduces the current passing through the electromagnetic coil (9); if the impact pressure data is less than a preset threshold value of effective sputum excretion pressure in the control circuit board (14), the control circuit board (14) increases the current passing through the electromagnetic coil (9).

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