A ventilator mask facial cushion installation fixture

Abstract

The present invention provides a ventilator mask face cushion installation fixture, including an upper pressure plate, a middle pressure plate and a lower pressure plate arranged in sequence from top to bottom, the lower pressure plate is protrudingly provided with a support seat, the support seat is engaged with the annular groove at the bottom of the mask cushion, the support seat is used to position and place the mask cushion, the middle part of the middle pressure plate is provided with a mounting hole arranged according to the outer contour of the mask cushion, a pressure block assembly is arranged on the outer periphery of the mounting hole relative to the bottom surface of the lower pressure plate, the pressure block assembly is arranged directly on the outer ring of the embedded groove of the mask cushion, when the middle pressure plate approaches the lower pressure plate, the pressure block assembly can squeeze the outer ring of the embedded groove of the mask cushion to separate it from the inner ring of the embedded groove. The present invention installs the mask cushion between the lower pressure plate and the middle pressure plate, when the middle pressure plate approaches the lower pressure plate, the pressure block assembly can squeeze the outer ring of the embedded groove of the mask cushion to separate it from the inner ring of the embedded groove, so as to facilitate the insertion and installation of the mask.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, in particular to a clamp for installing a soft facial cushion of a ventilator mask. Background Art

[0002] A ventilator is a device that can replace, control or change a person's normal physiological breathing, increase lung ventilation, improve respiratory function, reduce respiratory work consumption, and save heart reserve capacity. When infants and young children suffer from acute respiratory failure, after active conservative treatment is ineffective, breathing is weakened and sputum is abundant and thick, sputum is difficult to discharge, airway is blocked or atelectasis occurs, tracheal intubation and ventilator should be considered. A ventilator must have four basic functions, namely, inflating the lungs, switching from inhalation to exhalation, expelling alveolar gas, and switching from exhalation to inhalation, in a cycle. Therefore, it must have: ⑴ It can provide the power to transport gas to replace the work of the human respiratory muscles; ⑵ It can produce a certain respiratory rhythm, including respiratory frequency and inhalation-exhalation ratio, to replace the function of the human respiratory central nervous system to control the respiratory rhythm; ⑶ It can provide appropriate tidal volume (VT) or minute ventilation (MV) to meet the needs of respiratory metabolism; ⑷ The supplied gas is preferably heated and humidified to replace the function of the human nasal cavity, and can supply an amount of oxygen higher than that contained in the atmosphere to increase the concentration of inhaled oxygen and improve oxygenation. The working principle of the ventilator is as follows: during spontaneous ventilation, the inhalation action generates negative pressure in the chest cavity, and the passive expansion of the lungs creates negative pressure in the alveoli and airways, thus forming a pressure difference between the airway opening and the alveoli to complete the inhalation; after inhalation, the elasticity of the chest and lungs retracts, creating an opposite pressure difference to complete the exhalation. Therefore, normal breathing is completed by the body's breathing action to generate an "active negative pressure difference" between the alveoli and the airway opening, and the elasticity of the chest and lungs retracts after inhalation to generate a passive positive pressure difference between the alveoli and the airway opening to exhale, in order to meet the needs of physiological ventilation. Ventilator ventilation, on the other hand, is driven by an external mechanical drive to generate a positive pressure difference between the airway opening and the alveoli, and exhalation is when the elasticity of the chest and lungs retracts after the external mechanical drive pressure is removed to generate a passive positive pressure difference between the alveoli and the airway opening to complete the exhalation, that is, there is a "passive positive pressure difference" in the respiratory cycle to complete the breathing.

[0003] The accessories of the ventilator mainly include the main unit, screen, air compressor, humidifier, nebulizer, patient breathing circuit and nasal mask. When the generated airflow enters the nasal mask from the short tube of the air inlet, the breathing mask isolates the outside air to prevent harmful or toxic gases from entering the human respiratory system.

[0004] The existing ventilator mask part includes a mask cushion and a mask, the mask is connected to the breathing tube, the mask cushion is provided with an embedding groove, and the embedding groove is used to clamp and install the mask. The existing installation of the mask cushion and the mask is usually installed by manual splicing, which has low work efficiency. In addition, the installed mask cushion and the mask also have the problem of not being installed tightly enough and being easy to fall off.

[0005] A novel mask mounting fixture is now needed to solve the above problems. Summary of the invention

[0006] The invention provides a ventilator mask face cushion installation fixture, which solves the problems of low efficiency and easy falling off during the existing installation of the mask cushion and the mask by technically transforming the existing installation fixture.

[0007] In order to solve the above technical problems, the present invention specifically adopts the following technical solutions:

[0008] A ventilator mask facial cushion installation fixture comprises a middle pressure plate and a lower pressure plate which are arranged in sequence from top to bottom, wherein a support seat is protrudingly arranged on the lower pressure plate, and the support seat is engaged with the annular groove at the bottom of the mask cushion, and the support seat is used to position and place the mask cushion, and a mounting hole arranged in the middle of the middle pressure plate according to the outer contour of the mask cushion is opened, and a pressure block assembly is arranged on the bottom surface of the outer periphery of the mounting hole relative to the lower pressure plate, and the pressure block assembly is arranged directly on the outer ring of the embedded groove of the mask cushion, and when the middle pressure plate moves closer to the lower pressure plate, the pressure block assembly can squeeze the outer ring of the embedded groove of the mask cushion to separate it from the inner ring of the embedded groove.

[0009] Preferably, the pressure block assembly of the middle pressure plate includes an upper pressure block, a left pressure block, a right pressure block and a lower pressure block, and the surfaces of the upper pressure block, the left pressure block, the right pressure block and the lower pressure block relative to the mask cushion are inclined surfaces inclined toward the lower periphery, and the inclined surfaces are in contact with the outer surface of the outer ring of the mask cushion groove.

[0010] Preferably, a limiting groove is further provided on the bottom surface of the middle pressure plate at the periphery of the pressure block assembly, and a limiting block is installed in the limiting groove, and the limiting block is arranged around the outer ring edge of the mask cushion.

[0011] Preferably, an upper pressure plate is also arranged above the middle pressure plate, and an inner cavity limit block is fixedly arranged on the bottom surface of the upper pressure plate relative to the middle pressure plate. The inner cavity limit block can fill the internal space of the mask cushion and the outer side wall of the inner cavity limit block is in contact with the side wall of the inner ring of the groove of the mask cushion close to the middle cavity.

[0012] Preferably, a locking device is further provided between the middle pressure plate and the lower pressure plate, and the locking device can lock the relative position of the middle pressure plate and the lower pressure plate after the mask cushion is squeezed to separate the outer ring of the embedded groove from the inner ring of the embedded groove.

[0013] Preferably, the locking device comprises an elastic member, a slider, a connecting column and a latch, the middle pressure plate is provided with an installation groove around the middle pressure plate, the elastic member is fixedly arranged in the installation groove, and the other end of the elastic member is connected to a slider, the middle pressure plate is fixed with a baffle plate on the bottom plate of the installation groove, the slider is arranged between the baffle plate and the installation groove, the baffle plate and the middle pressure plate are penetrated by a first mounting hole and a first latch hole, the lower pressure plate is provided with a second mounting hole and a second latch hole at a corresponding position, a connecting column is arranged between the first mounting hole and the second mounting hole, the connecting column is used to ensure the relative position of the middle pressure plate and the lower pressure plate, a latch is arranged between the first latch hole and the second latch hole, a through hole is arranged in the middle of the slider, the latch can pass through the second latch hole, the through hole and the first latch hole from bottom to top, a clamping slot is arranged at the position of the connecting column relative to the installation groove, and a clamping position matching the clamping slot is arranged on a side of the slider relative to the connecting column, and the clamping position of the slider can be engaged with the clamping slot when the latch is pulled out.

[0014] Preferably, the elastic member is a spring.

[0015] Preferably, a cushion block is sleeved on the outer circumference of the connecting column, and the cushion block is arranged between the middle pressure plate and the lower pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) The present invention installs the mask cushion between the lower pressure plate and the middle pressure plate. When the middle pressure plate moves closer to the lower pressure plate, the pressing block assembly can squeeze the outer ring of the embedded groove of the mask cushion to separate it from the inner ring of the embedded groove, making it convenient for the mask to be inserted and installed.

[0018] 2) The present invention provides a limiting block so that the outer contour of the mask cushion does not change when it is squeezed, and the installation accuracy is higher.

[0019] 3) The present invention is also provided with a locking device, which can lock the relative positions of the middle pressure plate and the lower pressure plate after the mask cushion is squeezed to separate the outer ring of the embedding groove from the inner ring of the embedding groove, so that the mask cushion can be locked in the position where the outer ring of the embedding groove is separated from the inner ring of the embedding groove, thereby facilitating the insertion and installation of the mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the face mask cushion after being squeezed according to the present invention;

[0021] Figure 2 It is a schematic diagram of the positions of the upper pressing plate, the middle pressing plate and the lower pressing plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the bottom surface positions of the upper pressing plate, the middle pressing plate and the lower pressing plate of the present invention;

[0023] Figure 4It is a schematic diagram of the mask cushion and the lower pressure plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the bottom surface pressing block assembly of the pressure plate in the present invention;

[0025] Figure 6 It is a schematic diagram of the limit block and locking device on the bottom surface of the middle pressure plate of the present invention;

[0026] Figure 7 It is a schematic diagram of the clamping position and the clamping groove on the slider and the connecting column of the present invention;

[0027] Description of the reference numerals: middle pressure plate 1, mounting hole 11, pressure block assembly 12, upper pressure block 121, left pressure block 122, right pressure block 123, lower pressure block 124, limiting groove 13, limiting block 14, mounting groove 15, baffle 16, first mounting hole 17, and first latch hole 18, lower pressure plate 2, support seat 21, second mounting hole 22, second latch hole 23, mask cushion 3, ring groove 31, embedded groove outer ring 32, embedded groove inner ring 33, upper pressure plate 4, inner cavity limiting block 41, locking device 5, elastic member 51, slider 52, through hole 521, position 522, connecting column 53, slot 531, cushion block 532. DETAILED DESCRIPTION

[0028] The specific contents of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1-7 As shown, the present embodiment provides a ventilator mask face cushion installation fixture, comprising a middle pressure plate 1 and a lower pressure plate 2 which are arranged in sequence from top to bottom, the lower pressure plate 2 being provided with a support seat 21 which is protrudingly provided, the support seat 21 being engaged with the annular groove 31 at the bottom of the mask cushion 3, the support seat 21 being used for positioning and placing the mask cushion 3, the middle portion of the middle pressure plate 1 being provided with a mounting hole 11 which is arranged according to the outer contour of the mask cushion 3, the outer periphery of the mounting hole 11 being provided with a pressing block assembly 12 on the bottom surface of the lower pressure plate 2, the pressing block assembly 12 being arranged directly on the embedded groove outer ring 32 of the mask cushion 3, and when the middle pressure plate 1 is moved closer to the lower pressure plate 2, the pressing block assembly 12 can squeeze the embedded groove outer ring 32 of the mask cushion 3 to separate it from the embedded groove inner ring 33.

[0030] Furthermore, in order to separate the grooved outer ring 32 and the grooved inner ring 33 of the mask cushion 3 after extrusion, the pressure block assembly 12 of the middle pressure plate 1 includes an upper pressure block 121, a left pressure block 122, a right pressure block 123 and a lower pressure block 124, and the surfaces of the upper pressure block 121, the left pressure block 122, the right pressure block 123 and the lower pressure block 124 relative to the mask cushion 3 are inclined surfaces inclined toward the lower periphery, and the inclined surfaces are in contact with the outer surface of the grooved outer ring 32 of the mask cushion 3.

[0031] Furthermore, in order to prevent the outer contour of the mask cushion 3 from changing when it is squeezed, a limiting groove 13 is provided on the bottom surface of the middle pressure plate 1 at the periphery of the pressing block assembly 12, and a limiting block 14 is installed in the limiting groove 13. The limiting block 14 is arranged around the outer edge of the mask cushion 3. When squeezed, the limiting block 14 can prevent the outer contour of the mask cushion 3 from changing outward.

[0032] Furthermore, in order to prevent the mask cushion 3 from deforming inward during squeezing, an upper pressure plate 4 is also arranged above the middle pressure plate 1, and an inner cavity limit block 41 is fixedly arranged on the bottom surface of the upper pressure plate 4 relative to the middle pressure plate 1. The inner cavity limit block 41 can fill the internal space of the mask cushion 3 and the outer side wall of the inner cavity limit block 41 is in contact with the side wall of the inner ring 33 of the groove of the mask cushion 3 close to the middle cavity.

[0033] Furthermore, a locking device 5 is provided between the middle pressure plate 1 and the lower pressure plate 2, and the locking device 5 can lock the relative position of the middle pressure plate 1 and the lower pressure plate 2 after the mask cushion 3 is squeezed to separate the outer ring 32 of the groove and the inner ring 33 of the groove.

[0034] Further, in order to realize the function of the locking device 5, the locking device 5 includes an elastic member 51, a slider 52, a connecting column 53 and a latch. The middle pressure plate 1 is provided with a mounting groove 15 around it, and an elastic member 51 is fixedly provided in the mounting groove 15. The other end of the elastic member 51 is connected to a slider 52. A baffle 16 is fixed to the bottom plate of the mounting groove 15 on the middle pressure plate 1. The slider 52 is arranged between the baffle 16 and the mounting groove 15. The baffle 16 and the middle pressure plate 1 are penetrated by a first mounting hole 17 and a first latch hole 18. A second mounting hole 22 and a second latch hole 23 are provided at corresponding positions on the lower pressure plate 2. The first mounting hole 17 and the first latch hole 18 are provided on the lower pressure plate 2. A connecting column 53 is provided between the mounting hole 17 and the second mounting hole 22, and the connecting column 53 is used to ensure the relative position of the middle pressure plate 1 and the lower pressure plate 2. A latch is provided between the first latch hole and the second latch hole 23. A through hole 521 is provided in the middle of the slider 52, and the latch can pass through the second latch hole 23, the through hole 521 and the first latch hole 18 from bottom to top. A slot 531 is provided at the position of the connecting column 53 relative to the mounting groove 15, and a latch position 522 matching the slot 531 is provided on one side of the slider 52 relative to the connecting column 53, and the latch position 522 of the slider 52 can engage with the slot 531 when the latch is pulled out.

[0035] Furthermore, the elastic member 51 is a spring.

[0036] Furthermore, in order to prevent excessive squeezing of the middle pressure plate 1 when moving toward the lower pressure plate 2, a cushion block 532 is sleeved on the outer periphery of the connecting column 53, and the cushion block 532 is arranged between the middle pressure plate 1 and the lower pressure plate 2. The cushion block 532 can prevent excessive squeezing of the mask cushion 3.

[0037] In this embodiment, the mask cushion 3 is installed between the lower pressure plate 2 and the middle pressure plate 1. When the middle pressure plate 1 moves closer to the lower pressure plate 2, the pressure block assembly 12 can squeeze the outer ring 32 of the groove of the mask cushion 3 to separate it from the inner ring 33 of the groove, so that the mask can be inserted and installed conveniently. In this embodiment, a limiting block 14 is provided so that the outer contour of the mask cushion 3 does not change when it is squeezed, and the installation accuracy is higher. In this embodiment, a locking device 5 is also provided. The locking device 5 can lock the relative position of the middle pressure plate 1 and the lower pressure plate 2 at this time after the mask cushion 3 is squeezed to separate the outer ring 32 of the groove from the inner ring 33 of the groove, so that the mask cushion 3 can be locked in the position where the outer ring 32 of the groove is separated from the inner ring 33 of the groove, so that the mask can be inserted and installed conveniently.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0039] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets and welding in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A ventilator mask facial cushion installation fixture, characterized in that: It comprises a middle pressure plate and a lower pressure plate which are arranged in sequence from top to bottom, a support seat is protrudingly arranged on the lower pressure plate, the support seat is engaged with the annular groove at the bottom of the mask cushion, the support seat is used to position and place the mask cushion, a mounting hole arranged according to the outer contour of the mask cushion is opened in the middle of the middle pressure plate, a pressing block assembly is arranged on the bottom surface of the lower pressure plate on the outer periphery of the mounting hole, the pressing block assembly is arranged directly on the outer ring of the embedded groove of the mask cushion, and when the middle pressure plate is moved closer to the lower pressure plate, the pressing block assembly can squeeze the outer ring of the embedded groove of the mask cushion to separate it from the inner ring of the embedded groove; A locking device is also provided between the middle pressure plate and the lower pressure plate, and the locking device can lock the relative position of the middle pressure plate and the lower pressure plate after the mask cushion is squeezed to separate the outer ring of the embedded groove from the inner ring of the embedded groove; The locking device comprises an elastic member, a slider, a connecting column and a latch, the middle pressure plate is provided with an installation groove around, the installation groove is fixedly provided with an elastic member, the other end of the elastic member is connected with a slider, the middle pressure plate is fixed with a baffle plate on the bottom plate of the installation groove, the slider is arranged between the baffle plate and the installation groove, the baffle plate and the middle pressure plate are penetrated with a first installation hole and a first latch hole, the lower pressure plate is provided with a second installation hole and a second latch hole at a corresponding position, a connecting column is arranged between the first installation hole and the second installation hole, the connecting column is used to ensure the relative position of the middle pressure plate and the lower pressure plate, a latch is arranged between the first latch hole and the second latch hole, a through hole is arranged in the middle of the slider, the latch can pass through the second latch hole, the through hole and the first latch hole from bottom to top, a clamping groove is arranged at the position of the connecting column relative to the installation groove, and a clamping position matching the clamping groove is arranged on a side of the slider relative to the connecting column, and the clamping position of the slider can be engaged with the clamping groove when the latch is pulled out; The pressing block assembly of the middle pressure plate includes an upper pressing block, a left pressing block, a right pressing block and a lower pressing block. The surfaces of the upper pressing block, the left pressing block, the right pressing block and the lower pressing block relative to the mask cushion are inclined surfaces inclined toward the lower periphery, and the inclined surfaces are in contact with the outer surface of the outer ring of the mask cushion embedding groove.

2. A ventilator mask face cushion installation fixture according to claim 1, characterized in that: A limiting groove is also arranged on the bottom surface of the middle pressure plate at the periphery of the pressure block assembly, and a limiting block is installed in the limiting groove. The limiting block is arranged around the outer ring edge of the mask cushion.

3. A ventilator mask face cushion installation fixture according to claim 1, characterized in that: An upper pressure plate is also arranged above the middle pressure plate, and an inner cavity limit block is fixedly arranged on the bottom surface of the upper pressure plate relative to the middle pressure plate. The inner cavity limit block can fill the internal space of the mask cushion and the outer side wall of the inner cavity limit block is in contact with the side wall of the inner ring of the groove of the mask cushion close to the middle cavity.

4. A ventilator mask face cushion installation fixture according to claim 1, characterized in that: The elastic member is a spring.

5. A ventilator mask face cushion installation fixture according to claim 1, characterized in that: A cushion block is sleeved on the outer circumference of the connecting column, and the cushion block is arranged between the middle pressure plate and the lower pressure plate.

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