A PEEP valve structure and a ventilator comprising the PEEP valve structure

Abstract

The present invention provides a PEEP valve structure and a ventilator including the PEEP valve structure. The PEEP valve structure includes a segmented sealing diaphragm and a guiding component for supporting the segmented sealing diaphragm. The guiding component surrounds and fits on the outer periphery of the segmented sealing diaphragm. The PEEP valve structure provided by the present invention effectively eliminates the noise generated by the segmented sealing diaphragm, has a simple structure, is convenient to process, is beneficial to improving the production line qualification rate of the PEEP valve structure, and is beneficial to cost saving.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a PEEP valve structure and a ventilator including the PEEP valve structure. Background Art

[0002] PEEP (positive end expiratory pressure) means that inhalation is generated by the patient or the ventilator, and at the end of exhalation, the air pressure in the airway is higher than the atmospheric pressure by means of a partition sealing diaphragm or other devices installed at the exhalation end. The PEEP valve structure is an essential component of a ventilator. The ventilator uses the PEEP valve structure to keep a certain positive pressure in the airway at the end of exhalation, so that the alveoli will not completely atrophy, and the collapsed alveoli can be expanded and the atelectatic alveoli can be reinflated. Therefore, it can increase the functional residual capacity and the compliance of the lung, which is beneficial to the diffusion of oxygen through the respiratory membrane. PEEP can accelerate the repair process by improving oxygenation, avoid damage to lung tissue, and win opportunities for comprehensive treatment. Therefore, having the PEEP function has become an important performance index of medical ventilators.

[0003] However, the current PEEP valve structure of ventilators still has problems such as complex structure, high production cost, inconvenient processing, and noise during use. Summary of the Invention

[0004] One of the purposes of the present invention is to solve the problem of relatively large noise during the use of the PEEP valve structure in the prior art.

[0005] Another purpose of the present invention is to provide a PEEP valve structure with a simple structure and convenient processing, and reduce the production cost.

[0006] To achieve the above purposes, the present invention is realized through the following technical solutions:

[0007] A PEEP valve structure includes a partition sealing diaphragm. The PEEP valve structure further includes a guiding component for supporting the partition sealing diaphragm, and the guiding component surrounds and fits on the outer periphery of the partition sealing diaphragm.

[0008] Optionally, the PEEP valve structure further includes a valve cover, and the partition sealing diaphragm and the valve cover jointly enclose a control gas path cavity.

[0009] Optionally, the guiding component includes a first guiding component, the first guiding component fits the partition sealing diaphragm and the valve cover, and is located on the inner wall of the control gas path cavity, surrounding the outer periphery of the partition sealing diaphragm.

[0010] Optionally, the first guiding component is a guiding ring.

[0011] Optionally, the guiding component further includes a second guiding component, which is attached to the split sealing diaphragm and the valve cover, located on the outer wall of the control air path cavity, and surrounds the periphery of the split sealing diaphragm; the first guiding component and the second guiding component are jointly used to seal the gap between the split sealing diaphragm and the valve cover.

[0012] Optionally, the second guiding component is an upper valve ring.

[0013] Optionally, the PEEP valve structure further includes a diaphragm bracket for supporting the split sealing diaphragm, and the diaphragm bracket is arranged on the outer wall of the control air path cavity and attached to the split sealing diaphragm.

[0014] Optionally, the PEEP valve structure further includes a valve seat, and the valve seat, the diaphragm bracket and the split sealing diaphragm jointly enclose an airway air path cavity.

[0015] Optionally, the PEEP valve structure further includes an airway air path gasket, which is arranged on the diaphragm bracket and located on the inner wall of the airway air path cavity; when the gas pressure in the control air path cavities on both sides of the split sealing diaphragm is greater than the gas pressure in the airway air path cavity, the airway air path gasket is attached to the valve seat to seal the airway air path cavity.

[0016] The present invention also provides a ventilator, which includes the PEEP valve structure described in any one of the above.

[0017] Optionally, the ventilator further includes a base body for carrying the PEEP valve structure.

[0018] The guiding component of the PEEP valve structure provided by the present invention can support the split sealing diaphragm, making the up-and-down movement of the split sealing diaphragm more stable, so as to reduce or even avoid the noise generated during use. In addition, the guiding component can also seal the gap between the split sealing diaphragm and the valve cover, further reducing the noise generated by the split sealing diaphragm during use. Further, the PEEP valve structure omits the pin assembly, has a simple structure and is convenient to process, which is beneficial to improving the qualification rate of the production line and saving production costs. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of a PEEP valve structure in the prior art;

[0020] Figure 2 It is a schematic diagram of a PEEP valve structure provided by an embodiment of the present invention;

[0021] Figure 1The reference numerals are described as follows:

[0022] 1'-valve cover, 2'-pin assembly, 10'-control air passage cavity;

[0023] Figure 2 The reference numerals are described as follows:

[0024] 1-valve cover, 2-segmented sealing diaphragm, 3-guiding ring, 4-upper valve ring, 5-sealing ring, 6-diaphragm support, 7-valve seat, 8-air passage airtight gasket, 9-substrate, 10-control air passage cavity, 11-air passage air cavity. Detailed implementation mode

[0025] To assist a patient's breathing, a ventilator is usually required. The ventilator introduces breathing air into the patient's lungs and expels air from the lungs during forced breathing. The PEEP valve structure is an essential component on the ventilator. However, there are still some defects in the current PEEP valve structure of the ventilator. Specifically, as Figure 1 shown, a PEEP valve structure includes a pin assembly 2' and a valve cover 1'. Due to the tight fitting requirements between the pin assembly 2' and the valve cover 1', when the pressure of the control gas in the control air passage cavity 10' is low air pressure, if the fit between the pin assembly 2' and the valve cover 1' is insufficient, it often leads to the problem that the PEEP value control fails when the user uses the ventilator, and even causes user complaints and frequent after-sales repairs. Further, since the volume of the control air passage cavity 10' is relatively large and the control air passage pressure is low, when the PEEP value is tested online on the production line of the PEEP valve structure, the PEEP value fails due to the low test value, and the pass rate of the production line is low, so repeated tests have to be carried out; furthermore, the pin assembly 2' and the valve cover 1' are tightly press-fitted, and the pin assembly 2' is treated with a surface coating, and the processing accuracy requirements are high. The surface quality of the pin assembly 2' is easily damaged during the press-fitting process, resulting in low efficiency in manufacturing the pin assembly 2'.

[0026] In addition, the PEEP valve structure generally controls the patient's exhaled volume through a segmented sealing diaphragm. When the air pressure of the patient's exhaled gas is less than a set positive end-expiratory pressure value, the segmented sealing diaphragm will block the exhalation pipeline. Since the segmented sealing diaphragm is generally made of silicone material, it often makes a sound and forms noise during the opening and closing movement with the patient's breathing, affecting the patient's treatment and rest and not being conducive to the patient's recovery. Therefore, it is urgent to solve the noise problem existing in the PEEP valve structure during the use of the ventilator.

[0027] Based on the above research, this embodiment provides a PEEP valve structure. The PEEP valve structure includes a split sealing diaphragm, and the PEEP valve structure further includes a guiding component. The guiding component surrounds and fits around the outer periphery of the split sealing diaphragm, and the guiding component is used to support the split sealing diaphragm. Due to the supporting effect of the guiding component on the split sealing diaphragm, the split sealing diaphragm runs more smoothly up and down, and the noise generated by the split sealing diaphragm during use can be reduced or even eliminated. In addition, the guiding component can also seal the gap between the split sealing diaphragm and the valve cover, further reducing the noise generated by the split sealing diaphragm during use.

[0028] Further, in a preferred embodiment of the present invention, by removing the pin assembly 2', not only is the production difficulty of the pin assembly 2' eliminated, thereby improving the efficiency of manufacturing the PEEP valve structure; but also because the pin assembly 2' is removed, during use, there is no longer a situation where the pin assembly 2' is tightly engaged with the valve cover 1', and there is no jamming accident during operation, reducing the production line test failure rate and the failure rate during use. In addition, the volume of the control air passage cavity 10' is relatively small, and the PEEP control reaction is faster and more sensitive.

[0029] To make the objectives, advantages and features of the present invention clearer, the following Figure 2 will further elaborate on a PEEP valve structure proposed in this embodiment. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for conveniently and clearly assisting in explaining the objectives of this embodiment.

[0030] As Figure 2 shown, a PEEP valve structure includes a split sealing diaphragm 2. The split sealing diaphragm 2 divides the PEEP valve structure into two parts: a control air passage and an airway air passage. The control air passage includes a control air passage cavity 10, and the airway air passage includes an airway air passage cavity 11. During use, there is a pressure difference between the control air passage cavity 10 and the airway air passage cavity 11. When different pressures (or forces) act on both sides of the split sealing diaphragm 2, since the split sealing diaphragm 2 is generally made of an elastic material, the split sealing diaphragm 2 strains and moves towards the side with lower pressure, causing a displacement at its center that has a certain relationship with the pressure difference, and the split sealing diaphragm 2 vibrates up and down to adjust the exhalation volume and inhalation volume of the patient. Among them, the elastic material includes but is not limited to silicone rubber material.

[0031] Continuing to refer to Figure 2 , the PEEP valve structure further includes a guiding component. The guiding component surrounds and fits around the outer periphery of the split sealing diaphragm 2, and the guiding component is used to support the split sealing diaphragm 2.

[0032] The PEEP valve structure of this embodiment further includes a valve cover 1. The partition sealing diaphragm 2 and the valve cover 1 together enclose a control gas path cavity. The valve cover 1 can be used to seal, tighten and fix the PEEP valve structure.

[0033] Further, in order to reduce the noise caused by the flow of gas and the up-and-down vibration of the partition sealing diaphragm 2, which may cause unnecessary interference to the patient, the guiding assembly of this embodiment includes a first guiding assembly. The first guiding assembly is used to support the partition sealing diaphragm 2. The first guiding assembly of this embodiment is, for example, a guiding ring 3. The guiding ring 3 is of a ring structure. The guiding ring 3 fits the partition sealing diaphragm 2 and the valve cover 1, is located on the inner wall of the control gas path cavity 10, and surrounds the outer periphery of the partition sealing diaphragm 2. The guiding ring 3 can be used to support the partition sealing diaphragm 2, and moreover, the guiding ring 3 can also be used to seal the gap between the partition sealing diaphragm 2 and the valve cover 1 near the inner wall of the control gas path cavity 10.

[0034] Continue to refer to Figure 2 The guiding assembly may further include a second guiding assembly. The second guiding assembly is used to support the partition sealing diaphragm. The second guiding assembly is, for example, an upper valve ring 4. The upper valve ring 4 fits the partition sealing diaphragm 2 and the valve cover 1, is located on the outer wall of the control gas path cavity 10, and surrounds the outer periphery of the partition sealing diaphragm 2. The guiding ring 3 and the upper valve ring 4 together are used to seal the gap between the partition sealing diaphragm 2 and the valve cover 1. Among them, the valve cover 1, the partition sealing diaphragm 2, the guiding ring 3 and the upper valve ring 4 can together enclose to form the control gas path cavity 10.

[0035] Preferably, both the guiding ring 3 and the upper valve ring 4 are made of materials that are not easily deformed, such as made of metal materials or alloy materials. During use, the guiding ring 3 and the upper valve ring 4 are used to support the partition sealing diaphragm 2, and the guiding ring 3 and the upper valve ring 4 are also used to seal the gap between the partition sealing diaphragm 2 and the valve cover 1, so that the partition sealing diaphragm 2 runs smoothly up and down without vibration, reducing noise and improving the comfort of the patient when using the ventilator, which is more conducive to the patient's recovery.

[0036] Preferably, the PEEP valve structure further includes a sealing ring 5. The sealing ring 5 is of a ring structure. The sealing ring 5 is arranged on the periphery of the upper valve ring 4, for example, sleeved on the periphery of the upper valve ring 4.

[0037] Continue to refer to Figure 2 The PEEP valve structure may further include a diaphragm support 6. The diaphragm support 6 is arranged on the outer wall of the control gas path cavity 10 and fits the partition sealing diaphragm 2. The diaphragm support 6 is used to support the partition sealing diaphragm 2, for example, the partition sealing diaphragm 2 is installed on the diaphragm support 6. As an example, the diaphragm support 6 is made of metal material, but it should be understood that this is not a limitation of the present invention. In specific implementation, other materials can also be used to make the diaphragm support 6.

[0038] Continue to refer to Figure 2 , the PEEP valve structure may further include a valve seat 7. During use, the valve seat 7 is used to carry the diaphragm support 6. The valve seat 7, the diaphragm support 6, and the partition sealing diaphragm 2 together enclose an airway gas path cavity 11.

[0039] In addition, the PEEP valve structure may further include an airway gas path gasket 8. The airway gas path gasket 8 is close to the valve seat 7, and the airway gas path gasket 8 is disposed on the diaphragm support 6. The airway gas path gasket 8 is located on the inner wall of the airway gas path cavity 11. When using the PEEP valve structure, when the gas pressure in the control gas path cavities 10 on both sides of the partition sealing diaphragm 2 is greater than the gas pressure in the airway gas path cavity 11, the airway gas path gasket 8 is used to fit the valve seat 7, and the airway gas path gasket 8 is used to seal the airway gas path cavity 11, thereby adjusting and controlling the patient's inspiratory volume. Among them, the partition sealing diaphragm 2, the diaphragm support 6, the valve seat 7, and the airway gas path gasket 8 together enclose the airway gas path cavity 10.

[0040] The embodiment of the present invention also provides a ventilator, and the ventilator includes the above-mentioned PEEP valve structure. Refer to Figure 2 As shown, the ventilator further includes a base body 9, and the base body 9 is used to carry the PEEP valve structure. Among them, the sealing ring 5 is used to seal the gap between the upper valve ring 4 and the base body 9.

[0041] In summary, the PEEP valve structure for a ventilator provided by the above embodiment removes the pin assembly 2', reducing the difficulty of parts production. Moreover, since there are no parts that fit tightly with each other, the problem of PEEP failure caused by the pin assembly 2' getting stuck is completely avoided. Furthermore, the volume of the control gas path cavity 10 is relatively small, which is beneficial to improving the sensitivity of the control response and reducing the failure rate of production line testing. Further, the PEEP valve structure is provided with a guiding component, so that the partition sealing diaphragm of the PEEP valve structure will not vibrate during operation, will not generate noise, improves the comfort of the patient, and is more conducive to the patient's recovery.

[0042] It should be noted that in the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above embodiments have described in detail a PEEP valve structure and different configurations of a ventilator including the PEEP valve structure. Of course, the above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention in any way. The present invention includes but is not limited to the configurations listed in the above embodiments. Those skilled in the art can draw inferences from one instance to another based on the content of the above embodiments. Any changes and modifications made by ordinary technicians in the field of the present invention according to the above disclosure are within the scope of protection of the claims.

Claims

1. A PEEP valve structure includes a segmented sealing diaphragm, characterized in that, The PEEP valve structure further includes a guiding component for supporting the segmented sealing diaphragm, and the guiding component surrounds and fits on the outer periphery of the segmented sealing diaphragm; The PEEP valve structure further includes a valve cover, and the segmented sealing diaphragm and the valve cover together enclose to form a control air path cavity; The guiding component includes a guiding ring, and the guiding ring fits the segmented sealing diaphragm and the valve cover, and is located on the inner wall of the control air path cavity and surrounds the outer periphery of the segmented sealing diaphragm; The guiding component further includes an upper valve ring, and the upper valve ring fits the segmented sealing diaphragm and the valve cover, and is located on the outer wall of the control air path cavity and surrounds the outer periphery of the segmented sealing diaphragm; The PEEP valve structure further includes a sealing ring, the sealing ring is of an annular structure, and the sealing ring is arranged on the outer periphery of the upper valve ring; The guiding ring and the upper valve ring together are used to seal the gap between the segmented sealing diaphragm and the valve cover.

2. The PEEP valve structure according to claim 1, wherein The PEEP valve structure further includes a diaphragm support for supporting the segmented sealing diaphragm, and the diaphragm support is arranged on the outer wall of the control air path cavity and fits the segmented sealing diaphragm.

3. The PEEP valve structure according to claim 2, wherein The PEEP valve structure further includes a valve seat, and the valve seat, the diaphragm support and the segmented sealing diaphragm together enclose to form an airway air path cavity.

4. The PEEP valve structure according to claim 3, characterized in that, The PEEP valve structure further includes an airway air path gasket, and the airway air path gasket is arranged on the diaphragm support and is located on the inner wall of the airway air path cavity; When the gas pressure in the control air path cavities on both sides of the segmented sealing diaphragm is greater than the gas pressure in the airway air path cavity, the airway air path gasket fits the valve seat to seal the airway air path cavity.

5. A ventilator, characterized in that, It includes the PEEP valve structure according to any one of claims 1 to 4.

6. The ventilator according to claim 5, characterized in that, The ventilator further includes a base body for carrying the PEEP valve structure.

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