CN212235550U - Device for ensuring constant air leakage of non-invasive ventilation loop - Google Patents
Device for ensuring constant air leakage of non-invasive ventilation loop Download PDFInfo
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- CN212235550U CN212235550U CN202021085115.2U CN202021085115U CN212235550U CN 212235550 U CN212235550 U CN 212235550U CN 202021085115 U CN202021085115 U CN 202021085115U CN 212235550 U CN212235550 U CN 212235550U
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Abstract
The utility model relates to a complementary medical instrument field indicates especially a guarantee to have invariable device of wound ventilation return circuit air leakage volume, contains: the air leakage component and the air duct communicated with the air leakage component vertically, an air leakage port is arranged at the upper end of the air leakage component, a limiting part is arranged on the inner wall of the air leakage component, a part, close to the air leakage port, of the air leakage component and the limiting part enclose a moving space, and a pumping part extending outwards through the air leakage port is arranged in the moving space. The utility model discloses during noninvasive ventilation, the return circuit is under different inspiratory pressure and expiratory pressure, and the return circuit air leakage that ventilates keeps invariable function, can improve man-machine synchronism, alleviate patient's breathing difficulty.
Description
Technical Field
The utility model relates to a complementary medical instrument field indicates a guarantee to have invariable device of wound ventilation return circuit air leakage especially.
Background
At present, noninvasive ventilation is widely used in the fields of acute and chronic respiratory failure, cardiac insufficiency, respiratory rehabilitation and the like. The noninvasive ventilation provides inhalation pressure and exhalation pressure, and the inhalation pressure is beneficial to the inhalation of a patient, improves the ventilation, reduces the work of breathing muscles of the patient, and improves the dyspnea; the expiratory pressure is favorable for overcoming the endogenous end-expiratory positive pressure of a patient, ensures that the gas in the alveolus can be fully exhaled, and reduces the gas retention. When a patient with chronic airway diseases is acutely aggravated and airway resistance is increased, respiratory muscles are easily fatigued, and the inspiratory support pressure needs to be increased.
Most of the existing noninvasive ventilators are single-tube ventilation and an inspiratory phase, and gas is provided by the ventilators and is provided for patients through ventilation pipelines; in the exhalation phase, the exhaled gas from the patient cannot flow back to the ventilator, but is exhausted directly to the atmosphere through the exhaust vent. One type of the air vent is fixed in size, if the size of the air vent is fixed, the air leakage quantity passing through the air vent is increased and reduced along with the increase and reduction of the pressure set by the noninvasive ventilation, so that the inspiratory pressure for assisting a patient to inhale does not reach the pressure level preset by a breathing machine, and the ventilation effect is influenced; the size of the other exhaust port is automatically adjusted along with the pressure, so that the air leakage quantity passing through the exhaust hole is ensured not to change along with the pressure, but the current device for automatically adjusting the size of the exhaust hole adopts a film structure, once condensed water is adhered to the film structure, the automatic adjustment is not accurate, and the man-machine synchronism of the noninvasive ventilation is influenced.
The respirator is not provided with a breathing valve, so an external exhalation device is needed to realize the exhalation of the patient, the exhalation valve is in a continuous opening state, and the size of the air leakage is related to the pressure in the pipeline and the type and caliber of the exhalation valve; the noninvasive ventilation and expiration devices commonly used in clinic at present comprise two types: one type is an independent exhalation valve, including a side port valve, a silence valve, a platform valve. The second category is mask-integrated exhaling devices. The differences between these several devices are briefly described below:
side hole valve: the air leakage is caused through the air leakage hole with a fixed size and is a disposable consumable, the air leakage is mainly related to the pressure of a pipeline, and the higher the pressure is, the larger the air leakage is; the device leaks gas and makes loudly, often can influence the patient and have a rest.
A mute valve: the working principle of the mute valve is the same as that of the side hole valve, and the air leakage amount is correspondingly increased although the volume of air leakage is reduced because the air leakage area of the mute valve is increased.
A platform valve: the air leakage control valve mainly comprises a valve body, a silicon membrane and a valve cap, and air leakage of the device is irrelevant to the pressure in a pipeline, namely the air leakage is kept constant; however, the silicone membrane therein may have aging phenomena such as elasticity reduction and adhesion after long-term use, which affects the air leakage effect.
Integrative silence air leak valve of face guard: the mask is divided into two types, one is a rotary joint part of the mask at the exhaust hole position, the other is that the exhaust hole is positioned above the mask, dead cavities in the mask can be flushed by the air leakage, the exhaust rate of carbon dioxide can be improved compared with the former, and the mask does not need an external air leakage valve when in use, so that the air leakage is prevented from being too large.
Description figure 1 shows the air leakage change of four air leakage valves (a side hole valve, a mute valve, a platform valve and a mask integrated mute air leakage valve) under different pressure conditions.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a guarantee to have nothing to create device that return circuit air leakage is invariable of ventilating, its purpose: regardless of the increase or decrease of the inspiratory pressure and the expiratory pressure set by the respirator, the air leakage of the noninvasive ventilation loop is ensured not to change along with the pressure change, the man-machine synchronism is improved, and the dyspnea of a patient is reduced.
In order to achieve the above object, the utility model adopts the following technical scheme: an apparatus for ensuring a constant air leakage from a non-invasive ventilation circuit, comprising: the air leakage component and the air duct communicated with the air leakage component vertically, an air leakage port is arranged at the upper end of the air leakage component, a limiting part is arranged on the inner wall of the air leakage component, a part, close to the air leakage port, of the air leakage component and the limiting part enclose a moving space, and a pumping part extending outwards through the air leakage port is arranged in the moving space.
Further, the air leakage assembly is a hollow cylinder, and the lower end of the hollow cylinder is connected with the side wall of the ventilation pipeline.
Further, the locating part is an annular separation blade, the annular separation blade is fixed in the hollow cylinder body, and the periphery of the annular separation blade is tangent to the inner wall of the hollow cylinder body.
Further, the pumping member comprises: the circular movable sheet is movably arranged on the annular baffle, the bottom surface of the conical adjusting rod is connected with the circular movable sheet, and the tip end of the conical adjusting rod penetrates through the air leakage port and extends outwards.
Furthermore, the drawing part also comprises a spring sleeved on the conical adjusting rod, one end of the spring is propped against the air leakage port, and the other end of the spring is propped against the circular movable sheet.
Furthermore, the diameter of the circular movable plate is larger than the inner diameter of the annular baffle plate and smaller than the outer diameter of the annular baffle plate.
Further, the air leakage port is a circular through hole, and the diameter of the circular through hole is smaller than that of the circular movable sheet.
The beneficial effects of the utility model reside in that:
the utility model can improve the ventilation of patients, in particular,
when the air pressure of the ventilation pipeline rises during exhalation, the circular movable sheet pushes the conical adjusting rod to move towards the outside of the air leakage assembly, meanwhile, the circular movable sheet compresses the spring, the diameter of the conical adjusting rod penetrating through the air leakage opening is increased, the air leakage area of the air leakage opening is reduced, the constant air leakage through the air leakage opening when the pressure of a loop is increased is ensured, and the air leakage does not increase along with the increase of the pressure of the pipeline; when breathing in, the breather pipe pressure reduces, and the spring reconversion of compressed promotes that circular movable plate jointly takes the circular cone to adjust the pole and retract back toward leaking gas subassembly in, and the diameter that passes the circular cone shape regulation pole of gas leakage mouth reduces, makes the gas leakage area increase of gas leakage mouth, and the air leakage through the gas leakage mouth is invariable when guaranteeing breather pipe place return circuit pressure reduction. The constant air leakage of the non-invasive ventilation loop is beneficial to improving the man-machine synchronism of the non-invasive ventilation and ensuring the smooth implementation of the non-invasive ventilation.
Drawings
FIG. 1 is a graph of air leakage variation of different air leakage valves under different pressure conditions as described in the background of the invention.
Fig. 2 is a structural view of the present invention.
Figure 3 is a block diagram of the ring baffle of the present invention.
Fig. 4 is a structural diagram of the circular movable piece of the present invention.
The reference numbers illustrate: 1. an air duct; 3. an opening; 4. a hollow cylinder; 5. a gas leakage port; 6. a circular movable plate; 7. a conical adjusting rod; 8. a spring; 9. an annular baffle plate.
Detailed Description
Referring to fig. 2-4, the present invention relates to a device for ensuring constant air leakage of a non-invasive ventilation circuit, the device comprising: the air leakage component is arranged at the upper end of the air leakage component, an air leakage port 5 is arranged on the inner wall of the air leakage component, a part, close to the air leakage port 5, of the air leakage component and the limiting piece enclose a movable space, a pumping piece extending outwards through the air leakage port 5 is arranged in the movable space, and the end part of the pumping piece can be pumped back and forth through the air leakage port 5;
in the scheme, openings 3 are arranged at two ends of the ventilation pipeline 1, and the ventilation loop where the two openings 3 are located is communicated with the respiratory tract of the patient through a mask.
The use principle is as follows:
when the air is aspirated without wound ventilation, the circular movable sheet 6 pushes the conical adjusting rod 7 to move outwards along the air leakage opening 5 along with the rise of the air pressure of the ventilation pipeline 1, the circular movable sheet 6 compresses the spring 8, the diameter of the conical adjusting rod 7 penetrating through the air leakage opening 5 is increased, the air leakage area of the air leakage opening 5 is reduced, the constant air leakage through the air leakage opening 5 when the pressure of a loop is increased is ensured, and the air leakage does not increase along with the increase of the pressure of the pipeline;
when the noninvasive ventilation is changed from an inspiration phase to an expiration phase, along with the reduction of the pressure of the ventilation pipeline 1, the compressed spring 8 restores the original state and simultaneously pushes the circular movable plate 6 and the conical adjusting rod to retract into the air leakage assembly, the diameter of the cross section where the conical adjusting rod 7 passing through the air leakage opening 5 is located is reduced, the air leakage area of the air leakage opening 5 is increased, and the constant air leakage amount passing through the air leakage opening 5 when the pressure of a loop where the ventilation pipeline 1 is located is reduced;
the constant air leakage of the non-invasive ventilation loop is beneficial to improving the man-machine synchronism of the non-invasive ventilation and ensuring the smooth implementation of the non-invasive ventilation.
The air leakage component is a hollow cylinder 4, and the lower end of the hollow cylinder 4 is connected with the side wall of the vent pipeline 1.
The locating part is annular separation blade 9, annular separation blade 9 is fixed in hollow cylinder 4 and the periphery of annular separation blade 9 is tangent with the inner wall of hollow cylinder 4.
The pumping member includes: the circular adjusting device comprises a circular movable sheet 6 and a conical adjusting rod 7, wherein the circular movable sheet 6 is movably arranged on an annular blocking sheet 9, the bottom surface of the conical adjusting rod 7 is connected with the circular movable sheet 6, and the tip end of the conical adjusting rod 7 penetrates through an air leakage opening 5 and extends outwards.
The drawing part also comprises a spring 8 sleeved on the conical adjusting rod 7, one end of the spring 8 is propped against the air leakage opening 5, and the other end of the spring 8 is propped against the circular movable sheet 6.
The diameter of the circular movable plate 6 is larger than the inner diameter of the annular baffle plate and smaller than the outer diameter of the annular baffle plate; the purpose of the limitation is to prevent the circular movable piece 6 from escaping from the movable space.
The air leakage port 5 is a circular through hole, and the diameter of the circular through hole is smaller than that of the circular movable sheet 6; the purpose of the limitation is to prevent the circular movable plate 6 and the conical adjusting rod 7 from being separated from the air leakage component through the circular through hole.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.
Claims (7)
1. An apparatus for ensuring a constant air leakage from a non-invasive ventilation circuit, comprising: the air leakage component and the air duct communicated with the air leakage component vertically, an air leakage port is arranged at the upper end of the air leakage component, a limiting part is arranged on the inner wall of the air leakage component, a part, close to the air leakage port, of the air leakage component and the limiting part enclose a moving space, and a pumping part extending outwards through the air leakage port is arranged in the moving space.
2. The apparatus of claim 1, wherein the non-invasive ventilation circuit comprises: the air leakage assembly is a hollow cylinder, and the lower end of the hollow cylinder is connected with the side wall of the ventilation pipeline.
3. An apparatus for ensuring consistent air leakage from a non-invasive ventilation circuit as claimed in claim 2, wherein: the locating part is an annular separation blade, the annular separation blade is fixed in the hollow cylinder and the periphery of the annular separation blade is tangent with the inner wall of the hollow cylinder.
4. An apparatus for ensuring consistent air leakage from a non-invasive ventilation circuit as claimed in claim 3, wherein: the pumping member includes: the circular movable sheet is movably arranged on the annular baffle, the bottom surface of the conical adjusting rod is connected with the circular movable sheet, and the tip end of the conical adjusting rod penetrates through the air leakage port and extends outwards.
5. An apparatus for ensuring consistent air leakage from a non-invasive ventilation circuit as set forth in claim 4, wherein: the drawing part also comprises a spring sleeved on the conical adjusting rod, one end of the spring is propped against the air leakage port, and the other end of the spring is propped against the circular movable sheet.
6. An apparatus for ensuring consistent air leakage from a non-invasive ventilation circuit as claimed in claim 5, wherein: the diameter of the circular movable plate is larger than the inner diameter of the annular baffle plate and smaller than the outer diameter of the annular baffle plate.
7. An apparatus for ensuring consistent air leakage from a non-invasive ventilation circuit as claimed in claim 6, wherein: the air leakage port is a circular through hole, and the diameter of the circular through hole is smaller than that of the circular movable sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021085115.2U CN212235550U (en) | 2020-06-12 | 2020-06-12 | Device for ensuring constant air leakage of non-invasive ventilation loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021085115.2U CN212235550U (en) | 2020-06-12 | 2020-06-12 | Device for ensuring constant air leakage of non-invasive ventilation loop |
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| Publication Number | Publication Date |
|---|---|
| CN212235550U true CN212235550U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021085115.2U Active CN212235550U (en) | 2020-06-12 | 2020-06-12 | Device for ensuring constant air leakage of non-invasive ventilation loop |
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| Country | Link |
|---|---|
| CN (1) | CN212235550U (en) |
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2020
- 2020-06-12 CN CN202021085115.2U patent/CN212235550U/en active Active
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