A chest belt type vibration expectoration instrument

By designing a chest belt-type vibration sputum clearance device, which combines multi-point percussion with gravity drainage under different body positions using the belt and sputum clearance components, the problems of body position restrictions and inconvenient disinfection in existing technologies are solved, achieving efficient and convenient airway secretion clearance and patient rehabilitation treatment.

CN117159358BActive Publication Date: 2025-10-28RUIJIN HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Patent Information

Application Number
CN202310744615.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-21
Publication Date
2025-10-28
Estimated Expiration
2043-06-21

AI Technical Summary

Technical Problem

Existing vibration sputum suction devices cannot effectively combine with postural drainage in different body positions. The vibration of vest-type sputum suction devices is not easily transmitted and is inconvenient to disinfect, increasing the risk of nosocomial infection.

Method used

A chest-band type vibration sputum clearance device was designed, including a belt body and a sputum clearance component. The belt body is equipped with a pocket and a label. The sputum clearance component can tap at multiple points in different body positions, combined with gravity drainage. The device has a simple structure, is easy to carry and disinfect.

Benefits of technology

It enables effective clearance of airway secretions in different body positions, reduces the risk of lung diseases and nosocomial infections, and promotes the rehabilitation of patients.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a chest-band type vibration sputum clearance device, including a chest-band assembly. The chest-band assembly includes a belt body and several pockets. The two ends of the belt body are detachably connected to form a ring structure. Several pockets are provided on the outer surface of the belt body, and the surface of each pocket is marked with a sputum clearance target identifier. Several belt body holes are provided on the belt body, and each belt body hole corresponds to and connects to the interior of one of the pockets. A sputum clearance component is placed inside the pockets and exposed on the inner surface of the belt body through the belt body holes. The device has a simple structure, is easy to operate, and is convenient to carry. It achieves multi-point chest-band percussion sputum clearance and provides efficient and convenient auxiliary airway secretion clearance with one-person-one-use and one-disinfection, which is beneficial to the patient's rehabilitation treatment.
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Description

Technical Field

[0001] This invention relates to the field of sputum suction device technology, and more particularly to a chest belt type vibration sputum suction device. Background Technology

[0002] The human respiratory tract secretes approximately 100ml of mucus daily to maintain the normal ciliary movement of the respiratory system's mucosal epithelial cells. When various stimuli cause increased secretions, the common symptoms of all respiratory diseases appear: coughing and sputum production. Sputum consists of secretions from the trachea and bronchi or exudates from the alveoli (excluding mucus from the mouth, nose, and pharynx). When disease disrupts the mucus clearance mechanism and impairs sputum clearance function, changes in the mucociliary structure and impaired coughing function mean that coughing alone cannot expel all the sputum, leading to sputum retention. In addition, advanced age, obesity, neurological dysfunction, pain, and the use of sedatives and muscle relaxants can also affect sputum clearance function, resulting in sputum retention.

[0003] High-viscosity sputum retention can lead to bronchial obstruction. When sputum plugs form and obstruct larger bronchi, ventilation and gas exchange functions can be impaired, causing hypoxia and respiratory distress. Furthermore, sputum retention can promote the proliferation of microorganisms in the respiratory tract, leading to worsening inflammation, secondary infections, and the collapse and loss of cilia on the tracheal wall responsible for expectoration, resulting in loss of expectoration function, a continuously declining lung function, and a poor prognosis; in severe cases, it can be life-threatening. Suctioning is an effective method for resolving sputum retention in patients who cannot maintain airway patency through effective spontaneous coughing or who cannot clear their airways themselves, such as those on mechanical ventilation. However, due to gravity, airway secretions often accumulate in the middle and lower lobes and back of the lungs, which cannot be cleared by ordinary suctioning. Clinically, large doses of antibiotics are needed to control lung inflammation, but the effects are often unsatisfactory.

[0004] Chest physiotherapy uses specialized respiratory techniques to loosen and clear sputum from the lungs, effectively preventing atelectasis and lung infections, and improving respiratory function. Classic techniques such as postural drainage, chest percussion, and vibration are among the most important treatment methods. By loosening the sputum and reducing its viscosity, gravity helps move the sputum from the periphery to the center, promoting the drainage of respiratory secretions.

[0005] Another authorization announcement number, CN110169906A, with an authorization announcement date of August 27, 2019, discloses a back-patting and sputum-clearing chest band. It reveals that the chest band is equipped with a back-patting device on the outer side of the human back. The back-patting device includes several sets of patting components that can pat the back and a power component that drives the patting components to reciprocate. It solves the problems of large size of mechanical vibration sputum-clearing devices and cumbersome disinfection between two patients. It can perform effective back positioning percussion and can perform more efficient percussion on the patient's back when in the prone position. However, due to the limitation of the back-patting device, the chest band cannot be combined with the lateral position and does not match the vibration area of ​​the upper lobe of the lung infection. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a novel chest-belt vibration sputum suction device that is simple in structure, easy to operate, portable, applicable to different body positions during postural drainage, and capable of controlling tapping and patting at the site of the patient's lesion.

[0007] The chest strap type vibration sputum clearance device includes:

[0008] A chest strap assembly includes a strap body and several pockets. The ends of the strap body are detachably connected to form a ring structure. Several pockets are provided on the outer surface of the strap body. The surface of each pocket is marked with a sputum expectoration target identification. Several strap body holes are provided on the strap body, and each strap body hole corresponds to and connects to the interior of one of the pockets.

[0009] A sputum clearance assembly, which is placed inside the pocket and exposed to the inner surface of the belt body through the belt body opening.

[0010] In a preferred embodiment, the sputum clearance assembly includes an electromagnetic vibrator or a percussion sputum clearance device.

[0011] In a preferred embodiment, the percussion expectoration device includes:

[0012] case;

[0013] A striking head, wherein an air bladder is provided on the striking head, and the striking head is connected to the housing;

[0014] A piston slider moves up and down repeatedly within the housing to cause the striking head to strike.

[0015] The housing is held inside the pocket, and the air bladder of the tapping head extends from the strap body hole to the inner surface of the strap body.

[0016] In a preferred embodiment, the percussion expectoration device further includes:

[0017] Power components;

[0018] An inertial flywheel is provided, wherein the power component and the inertial flywheel are connected by a transmission, and the power component drives the inertial flywheel to rotate.

[0019] A crankshaft connecting rod mechanism, wherein the crankshaft connecting rod mechanism is connected between the inertial flywheel and the piston slider;

[0020] A switch that controls the opening and closing of the power component;

[0021] The switch is located on the surface of the housing, while the power unit, the inertial flywheel, and the crankshaft connecting rod mechanism are located inside the housing.

[0022] In a preferred embodiment, the two ends of the strap are connected by a first hook and loop fastener.

[0023] In a preferred embodiment, the first hook and loop fastener includes a first female fastener and a first female fastener. The first female fastener is connected to the beginning of the strap body, and the first female fastener is formed on the outer surface of the strap body, extending from the middle of the strap body to the end.

[0024] As a preferred embodiment, it also includes:

[0025] A fixed shoulder strap assembly includes at least two connected shoulder straps, each strap having a plurality of fixing holes, and the ends of the shoulder straps being detachably connected to the fixing holes.

[0026] In a preferred embodiment, the number of shoulder straps is three, forming a Y-shaped fixed shoulder strap assembly, with the ends of the shoulder straps passing through the fixing holes and connected by a second Velcro fastener.

[0027] In a preferred embodiment, the pocket opening is oriented in a certain direction, and a pocket securing strap is provided at the pocket opening.

[0028] In a preferred embodiment, the outer surface and / or the inner surface of the belt are marked with markings, including a midline spine marking and a body position drainage marking.

[0029] Compared with existing technologies, this technical solution has the following advantages:

[0030] The band is connected at both ends to form a ring structure and can be worn on the patient's chest. The inner surface of the band fits the human body, and the sputum expectoration component exposed on the inner surface of the band provides vibration and tapping to assist in sputum expectoration.

[0031] Since each of the pockets can be equipped with a sputum expectoration component, and each pocket corresponds to a different sputum expectoration target, including the upper left lobe, left lingual lobe, lower left lobe, upper right lobe, middle right lobe, and lower right lobe, a suitable body position can be selected according to the different sputum expectoration targets, thereby helping the patient to perform multi-point percussion and vibration under different body position conditions.

[0032] Furthermore, the surface of the pocket is marked with a sputum expectoration target identifier, allowing for a clear understanding of the target sputum expectoration target and enabling accurate placement of the sputum expectoration component at the corresponding target location.

[0033] The sputum clearance component directly contacts and acts on the patient's chest through the holes in the belt, making its percussion pressure more easily transmitted to the chest wall compared to vest-type sputum clearance devices. This achieves multi-point chest belt percussion sputum clearance, solving the problem that large vibratory sputum clearance devices cannot be used in conjunction with airway clearance treatments for different patient positions. It also addresses the issue of the vibrating head being too heavy and cumbersome, making it inconvenient for medical personnel to operate for extended periods.

[0034] The chest strap assembly and the sputum drainage assembly are separate and combined, with a simple structure, convenient operation, and easy portability. They achieve efficient and convenient airway secretion clearance by allowing each person to use them once and disinfect them afterward, reducing the aggravation of lung diseases and hypostatic pneumonia caused by poor sputum drainage, and facilitating the patient's rehabilitation treatment.

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0036] Figure 1 This is a front view of the chest strap assembly described in this invention;

[0037] Figure 2 This is a rear view of the chest strap assembly described in this invention;

[0038] Figure 3 This is a schematic diagram of the first state structure of the percussion expectorant device of the present invention;

[0039] Figure 4 This is a schematic diagram of the second state structure of the percussion expectorant device of the present invention;

[0040] Figure 5 This is a schematic diagram of the fixed shoulder strap assembly described in this invention.

[0041] In the diagram: 100 Chest strap assembly, 110 Strap body, 110a Outer surface, 110b Inner surface, 111 Strap body hole, 112 Fixing hole, 120 Pocket, 120a Pocket fixing strap, 130 Sputum expectorant identification, 200 Sputum expectoration assembly, 210 Percussion expectorator, 211 Housing, 212 Percussion head, 212a Airbag, 213 Piston slider, 214 Power component, 215 Inertia flywheel, 216 Crankshaft connecting rod mechanism, 216a First connecting rod, 216b Second connecting rod, 217 Switch, 300 Fixed shoulder strap assembly, 310 Shoulder strap, 410 First Velcro fastener, 411 First female fastener, 412 First female fastener, 420 Second Velcro fastener, 510 Midline corresponding to the spine identification, 520 Postural drainage identification. Detailed Implementation

[0042] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0043] like Figure 1 and Figure 2 As shown, the chest strap type vibration sputum clearance device includes:

[0044] The chest strap assembly 100 includes a strap body 110 and several pockets 120. The ends of the strap body 110 are detachably connected to form a ring structure. Several pockets 120 are provided on the outer surface 110a of the strap body 110. A sputum expectoration target identification 130 is provided on the surface of each pocket 120. Several strap holes 111 are provided on the strap body 110, and each strap hole 111 is connected to the interior of one of the pockets 120.

[0045] A sputum clearance assembly 200 is placed inside the pocket 120 and exposed to the inner surface 110b of the belt body 110 through the belt body hole 111.

[0046] The band 110 is connected at both ends to form a ring structure and can be worn on the patient's chest. The inner surface 110b of the band 110 is in close contact with the human body. The sputum expectoration component 200 exposed on the inner surface 110b of the band 110 provides vibration and percussion to assist in sputum expectoration. Since each pocket 120 can accommodate one of the sputum drainage components 200, and each pocket 120 corresponds to a different sputum drainage target, including the left upper lobe, left lingular lobe, left lower lobe, right upper lobe, right middle lobe, and right lower lobe, a suitable body position can be selected according to the different sputum drainage targets. For example, for infections of the left upper lobe apical segment, a semi-recumbent position is used; for infections of the left lingular segment and left dorsal segment, a right lateral decubitus position with the left side elevated or a right 3 / 4 lateral decubitus position is used; and for lower lobe infections, a prone position or a head-down, feet-up position is used. This allows for multi-point percussion and vibration in different positions, where the generated therapeutic force penetrates the dermis and muscles, loosening secretions on the mucosa of each lobe and segmental bronchus. Then, through the directional guidance of gravity, sputum is drained at different angles to expel the loosened sputum from deep within. Furthermore, the surface of each pocket 120 is marked with a sputum drainage target identifier 130, providing a clear understanding of the sputum drainage target and enabling accurate placement of the sputum drainage component 200 at the corresponding target location. Furthermore, the chest strap assembly 100 and the sputum drainage assembly 200 are separate and combined, with a simple structure, convenient operation, and easy portability. They also achieve efficient and convenient airway secretion clearance by allowing each person to use and disinfect them individually, reducing the aggravation of lung diseases and hypostatic pneumonia caused by poor sputum drainage, and facilitating the patient's rehabilitation treatment.

[0047] like Figure 1 and Figure 2 As shown, the belt body 110 can be made of at least one layer of highly abrasion-resistant, high tear-strength, and elastic fabric, preferably two layers, to ensure the strength of the belt body 110 and thus extend its service life. The belt body 110 can be rectangular, with a length of 115cm and a width of 35cm, but is not limited thereto.

[0048] refer to Figure 1 The beginning and end of the band 110 can be connected by a first hook and loop fastener 410. The first hook and loop fastener 410 includes a first female fastener 411 and a first female fastener 412. The first female fastener 411 is connected to the beginning of the band 110, and the first female fastener 412 is formed on the outer surface 110a of the band 110. The first female fastener 412 extends from the middle of the band 110 to the end, which facilitates bonding according to the patient's body shape and enables precise positioning of the sputum drainage component 200.

[0049] like Figure 2As shown, the inner surface 110b of the belt body 110 is provided with markings, including a midline spine marking 510 and a body position drainage marking 520. Of course, the midline spine marking 510 and the body position drainage marking 520 can be provided on the outer surface 110a of the belt body 110.

[0050] The midline corresponding spine marker 510 is located in the middle of the belt body 110. That is, when the belt body 110 is tied to the patient's chest, the midline corresponding spine marker 510 corresponds to the patient's spine, so that each pocket 120 on the belt body 110 with a sputum expectoration object marker 130 can correspond to the patient's sputum expectoration object.

[0051] It should be noted that, since the belt hole 111 on the belt body 110 is used to install the sputum drainage component 200, the belt hole 111 is aligned with the patient's sputum drainage target, and the pocket 120 is set to correspond to the belt hole 111 for placing the sputum drainage component 200.

[0052] The sputum expectorant identifier 130 includes lung lobe icons with dark areas indicating the placement of the percussion expectorator for the upper left lobe, left lingual lobe, lower left lobe, upper right lobe, middle right lobe, and lower right lobe.

[0053] The positional drainage marker 520 indicates the positioning for drainage of the left upper lobe, left lingula, left lower lobe, right upper lobe, right middle lobe, and right lower lobe, allowing for personalized position selection based on the patient's condition.

[0054] like Figure 1 As shown, the opening of the pocket 120 faces the specified direction, and a pocket securing strap 120a is provided at the opening of the pocket 120. The sputum drainage component 200 is placed inside the pocket 120 through the opening, and then the opening of the pocket 120 is closed by the pocket securing strap 120a. The pocket securing strap 120a can also be attached to the outer surface 110a of the strap body 110 using Velcro, or it can be tightened by a drawstring. Furthermore, the sputum drainage component 200 contacts the patient's chest wall through the strap body hole 111. Adjusting the pocket securing strap 120a generates pressure, causing the sputum drainage component 200 to press firmly against the patient's chest wall.

[0055] like Figure 1 , Figure 2 and Figure 5 As shown, the chest strap type vibration sputum clearance device also includes:

[0056] A fixed shoulder strap assembly 300 includes at least two connected shoulder straps 310. The strap body 110 has a plurality of fixing holes 112, and the ends of the shoulder straps 310 are detachably connected to the fixing holes 112.

[0057] A plurality of fixing holes 112 may be provided 1 cm from the upper edge of the belt body 110. The fixing holes 112 are spaced apart along the length of the belt body 110 so that the upper part of the belt body 110 is in a grid pattern. Different carrying straps 310 are connected to different fixing holes 112 so that the carrying straps 310 are worn on the patient's shoulders to prevent the sputum clearance component 200 from being pulled towards the chest strap component 100 due to gravity. The fixing carrying strap component 300 pulls the straps to maintain a precise percussion position.

[0058] Continue to refer to Figure 5 The number of straps 310 is three, forming a Y-shaped fixing strap assembly 300, similar to overalls, to hold the fixing strap assembly 300 in position at the patient's chest. The ends of the straps 310 pass through the fixing holes 112 and are connected by a second Velcro fastener 420.

[0059] The sputum clearance assembly 200 includes an electromagnetic oscillator or a percussion sputum clearance device 210. For example... Figure 3 and Figure 4 As shown, the percussion expectorant 210 includes:

[0060] Casing 211;

[0061] A striking head 212 is provided with an airbag 212a, and the striking head 212 is connected to the housing 211;

[0062] Piston slider 213 moves up and down repeatedly within housing 211 to cause the striking head 212 to strike.

[0063] The housing 211 is held inside the pocket 120, and the air bladder 212a of the tapping head 212 extends from the strap hole 111 to the inner surface 110b of the strap 110.

[0064] The airbag 212a extends from the hole 111 of the belt body to the inner surface 110b of the belt body 110 and contacts the patient's chest. By controlling the piston slider 213 to move up and down repeatedly, the inside of the tapping head 212 is inflated and deflated, thereby performing a tapping operation on the patient's chest.

[0065] The tapping head 212 may be bowl-shaped and made of silicone or rubber, such as polyethylene. The air bladder 212a may be annular and positioned at the bottom edge of the tapping head 212, so that the tapping force generated by the sputum clearance assembly 200 acts entirely on the tightly fitted chest wall. Compared to vest-type sputum clearance devices, its tapping pressure is more easily transmitted to the chest wall.

[0066] The percussion expectoration device 210 also includes:

[0067] Power component 214;

[0068] An inertial flywheel 215 is connected to the power component 214 via a transmission, and the power component 214 drives the inertial flywheel 215 to rotate.

[0069] A crankshaft connecting rod mechanism 216 is connected between the inertial flywheel 215 and the piston slider 213;

[0070] Switch 217, which controls the opening and closing of the power component 214;

[0071] The switch 217 is located on the surface of the housing 211, and the power component 214, the inertial flywheel 215 and the crankshaft connecting rod mechanism 216 are located inside the housing 211.

[0072] The power component 214 can be an electric motor, which includes a circuit board, a power supply, and a battery. The power component 214 is fixed inside the housing 211, and the switch 217 is fixed to the surface of the housing 211. Pressing the switch 217 activates or deactivates the percussion suction device 210. Alternatively, a remote control can be connected to the switch 217 to control the activation and deactivation of each percussion suction device 210.

[0073] The crankshaft connecting rod mechanism 216 includes a first connecting rod 216a and a second connecting rod 216b. The two ends of the first connecting rod 216a are hinged to the inertia flywheel 215 and the second connecting rod 216b, respectively. The first connecting rod 216a is away from the center of the inertia flywheel 215 and can be hinged to the edge of the inertia flywheel 215. In addition to being hinged to the first connecting rod 216a, the second connecting rod 216b is also hinged to the piston slider 213. The second connecting rod 216b is confined inside the housing 211 and moves along the axial direction of the housing 211. Thus, when the power member 214 drives the inertia flywheel 215 to rotate, the first connecting rod 216a rotates eccentrically with the inertia flywheel 215, and then drives the piston slider 213 to move up and down along the axial direction of the housing 211 through the second connecting rod 216b.

[0074] Existing handheld vibration sputum suction devices require different percussion heads for different user groups, but the disassembly, replacement, and disinfection of the percussion heads are very cumbersome, affecting ease of use. Secondly, they need to be operated by medical staff, and the treatment time can generally only be maintained for 5 minutes, which is not conducive to continuous and repeated vibration sputum suction. In addition, although the existing vest-type sputum suction devices save manpower and solve the problem of the bulkiness of handheld vibration sputum suction devices and their inability to be used for a long time, the vest of such sputum suction devices is prone to loosening, and the generated vibration is not easily transmitted to the chest wall. The connection position of the vibration head cannot be used to perform sputum suction for patients who need postural drainage, such as those in prone or lateral decubitus positions. Furthermore, the vest cannot be used by one person at a time, the disinfection process is time-consuming and labor-intensive, and frequent use increases the risk of nosocomial infection.

[0075] In this embodiment, the vibration sputum clearance device is worn on the patient's chest in a chest strap manner. The belt body 110 of the vibration sputum clearance device is equipped with multiple pockets 120 for different sputum clearance targets. Each pocket 120 can hold one sputum clearance component 200. The sputum clearance component 200 directly contacts and acts on the patient's chest through the belt body hole 111 on the belt body 110, realizing multi-point chest strap percussion sputum clearance. This solves the problem that large vibration sputum clearance devices cannot be combined with airway clearance treatment for different body positions. At the same time, it solves the problem that the vibration head is too heavy and cumbersome, which is not conducive to medical staff to operate for a long time. It also meets the requirement of one person, one use, and one disinfection to prevent nosocomial infection.

[0076] It is small in size, easy to operate, and effectively combines percussion drainage with postural drainage to promote the discharge of sputum from the lungs, reduce the bacterial threshold in the patient's lungs, alleviate lung infection, reduce acute exacerbations, and facilitate the patient's rehabilitation treatment.

[0077] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, all equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A chest-strap type vibration sputum clearance device, characterized in that, include: A chest strap assembly (100) includes a strap body (110) and several pockets (120). The ends of the strap body (110) are detachably connected to form a ring structure. Several pockets (120) are provided on the outer surface (110a) of the strap body (110). A sputum expectorant identifier (130) is provided on the surface of each pocket (120). Several strap holes (111) are provided on the strap body (110). Each strap hole (111) is connected to the interior of one of the pockets (120). The sputum clearance component (200) is placed inside the pocket (120) and exposed to the inner surface (110b) of the belt body (110) through the belt body hole (111). The sputum clearance component (200) directly contacts and acts on the patient's chest to achieve multi-point chest belt percussion sputum clearance. The outer surface (110a) and / or the inner surface (110b) of the belt (110) are provided with a midline corresponding spine marker (510) and a body position drainage marker (520).

2. The chest-band type vibration sputum clearance device as described in claim 1, characterized in that, The sputum expectoration assembly (200) includes an electromagnetic oscillator or a percussion expectoration device (210).

3. The chest-band type vibration sputum clearance device as described in claim 2, characterized in that, The percussion expectoration device (210) includes: Shell (211); A striking head (212) is provided with an airbag (212a), and the striking head (212) is connected to the housing (211); The piston slider (213) moves up and down repeatedly within the housing (211) to cause the striking head (212) to strike. The housing (211) is held inside the pocket (120), and the air bladder (212a) of the tapping head (212) extends from the belt body hole (111) to the inner surface (110b) of the belt body (110).

4. The chest-band type vibration sputum clearance device as described in claim 3, characterized in that, The percussion expectoration device (210) also includes: Power component (214); An inertial flywheel (215) is connected to the power component (214) via a transmission, and the power component (214) drives the inertial flywheel (215) to rotate. A crankshaft connecting rod mechanism (216) is connected between the inertial flywheel (215) and the piston slider (213); A switch (217) controls the opening and closing of the power component (214); The switch (217) is located on the surface of the housing (211), and the power unit (214), the inertial flywheel (215) and the crankshaft connecting rod mechanism (216) are located inside the housing (211).

5. The chest-band type vibration sputum clearance device as described in claim 1, characterized in that, The beginning and end of the belt (110) are connected by a first hook and loop fastener (410).

6. The chest-band type vibration sputum clearance device as described in claim 5, characterized in that, The first hook and loop fastener (410) includes a first female fastener (411) and a first female fastener (412). The first female fastener (411) is connected to the first end of the strap (110), and the first female fastener (412) is formed on the outer surface (110a) of the strap (110) and extends from the middle of the strap (110) to the tail end.

7. The chest-band type vibration sputum clearance device as described in claim 1, characterized in that, Also includes: A fixed shoulder strap assembly (300) includes at least two connected shoulder straps (310), and a plurality of fixing holes (112) are provided on the strap body (110). The ends of the shoulder straps (310) are detachably connected to the fixing holes (112).

8. The chest-band type vibration sputum clearance device as described in claim 7, characterized in that, The number of the shoulder straps (310) is three, forming a Y-shaped fixed shoulder strap assembly (300), the ends of the shoulder straps (310) passing through the fixing holes (112) and connected by a second hook and loop fastener (420).

9. The chest-band type vibration sputum clearance device as described in claim 1, characterized in that, The opening of the pocket (120) is oriented in a certain direction, and a pocket fixing strap (120a) is provided at the opening of the pocket (120).

Citation Information

Patent Citations

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    CN110169906A

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