CN120458556A - Airway-adjustable blocking device - Google Patents

Abstract

The present invention relates to the technical field of medical equipment, and discloses an adjustable airway obstruction device, comprising an exhalation member, a connecting member, and an airway obstruction member connected sequentially from top to bottom. The airway obstruction member comprises an air inlet and an air outlet, the upper end of the air inlet being connected to the lower end of the connecting member, the lower end of the air inlet being connected to the upper end of the air outlet, and an adjustment structure being provided in the middle of the air outlet. The adjustment structure comprises a mounting ring, the inner wall of the mounting ring being provided with a mounting groove, in which an adjustment ring and a plurality of arcuate blades are rotatably mounted. The arcuate blades overlap with each other and form a through hole at the center of the overlap, and the diameter of the through hole is controlled by separating the arcuate blades. The adjustment structure of the present invention is used to simulate exhalation resistance, and the aperture size in the middle of the air outlet can be adjusted by the adjustment structure to simulate different ranges of exhalation resistance.

Description

Airway-adjustable blocking device

Technical Field

The invention relates to the technical field of medical equipment, in particular to an airway-adjustable blocking device.

Background

In traditional physiological teaching experiments lung ventilation function tests, forced Vital Capacity (FVC) experiments typically simulate different airway resistance through a fixed gauge airway obstruction, but they suffer from the following drawbacks:

1. the stopper specification is single, and the prior equipment mostly adopts a stopper with fixed diameter, can not flexibly adjust the sectional area of the airway, so that the range of simulated expiratory resistance is limited, and the clinical requirement is difficult to be matched accurately.

2. The resistance adjustment is inaccurate, the prior art lacks a dynamic resistance adjustment mechanism, the resistance change is realized only by replacing the stoppers with different diameters, the operation is complicated, the real-time adjustment cannot be realized, and the detection efficiency is affected.

3. The measurement accuracy is insufficient, the calculation of the expiratory resistance depends on indirect parameters (such as flow change), and the error is large.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides an airway adjustable blocking device, includes expiration spare, connecting piece and airway blocking piece, expiration spare, connecting piece and airway blocking piece are cavity tubulose and from the top down connect gradually, wherein, airway blocking piece, the portion of giving vent to anger of portion and lower part including upper portion, the upper end of portion of giving vent to anger with the lower extreme of connecting piece is connected, the lower extreme of portion of giving vent to anger with the upper end of portion of giving vent to anger is connected, the middle part of portion of giving vent to anger is equipped with the regulation structure, the regulation structure includes the collar, the inner wall of collar is equipped with the mounting groove, adjusting ring and a plurality of arc blade are installed in the mounting groove rotation, arc blade is equipped with three arc limit, and wherein the central point indent of an arc edge arc blade, the central point evagination of two arc edge arc blades of remaining arc blade, and a plurality of arc blade overlap each other and form the through-hole by the arc limit of indent in its overlapping center department, the arc limit of evagination with the outer wall of adjusting ring, when adjusting ring rotates, drive the arc limit of evagination rotates, and the circumference of arc limit of evagination is controlled through the separation of arc blade and is big.

Further, a pulling piece for rotating the adjusting ring is arranged at the position, opposite to the adjusting ring, of the outer wall of the air outlet part.

Further, the outer wall of the air outlet part is provided with scales, and the scales are positioned below the poking sheets.

Further, the middle part of the connecting piece is connected with a pressure transducer through a connecting pipe.

Further, the lower extreme of giving vent to anger portion is connected with the filter.

Further, a respiratory flow sensor is connected to the filter.

The invention has the beneficial effects that:

1. The exhale piece, the connecting piece and the airway obstruction piece are all made of medical grade Polycarbonate (PC) materials, the materials have certain rebound resilience, and all the parts are connected in an interference fit mode, so that the stability of connection among all the parts is ensured, and when one part needs to be replaced, the other part is directly and manually extracted, and the replacement is convenient and quick;

2. When blowing to exhaling in the piece, pressure transducer's monitoring probe extends to exhaling piece middle part 1-2mm and can enough real-time supervision upstream atmospheric pressure, still can not hinder the normal flow of air current, and pressure transducer, after the real-time supervision gathered upstream atmospheric pressure, the transmission to data acquisition module after handling through differential amplifier circuit, pressure transducer is connected to data acquisition module through shielded cable, reduces cross interference, ensures sampling signal stability.

3. The middle part of the air outlet part is provided with an adjusting structure, the air flow exhaled by the user flows out through the air outlet part, the adjusting structure is used for simulating the expiratory resistance, and the pore size of the middle part of the air outlet part can be adjusted through the adjusting structure to simulate the expiratory resistance in different ranges.

4. The flow sensor and the energy converter are connected with the data acquisition module, the data acquisition module is connected with the processing module at the rear end, and the processing module can dynamically output an expiration resistance curve and synchronously display pressure-time, flow-time waveform and resistance-time curve.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic structural view of a respiratory component;

FIG. 3 is a schematic view of the structure of an airway obstruction;

FIG. 4 is an exploded view of the airway obstruction;

FIG. 5 is a top view of a cambered vane;

FIG. 6 is a bottom view of a cambered vane;

Fig. 7 is a cross-sectional view of the mounting ring.

1, An exhaling part, 2, a connecting part, 3, an obstruction part, 301, an air outlet part, 302, an air inlet part, 303, a mounting ring, 304, an arc-shaped blade, 305, an adjusting ring, 306, a mounting groove, 307, a poking piece, 3071, a poking block, 3072, a screw, 3073, a damping rubber block, 308, a rubber layer, 309, scales, 4, a connecting pipe, 5, a transducer, 6, a filter, 7 and a respiratory flow sensor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As shown in fig. 1-7, the airway-adjustable blocking device comprises an exhalation part 1, a connecting part 2 and an airway blocking part 3, wherein the exhalation part 1, the connecting part 2 and the airway blocking part 3 are all hollow tubular and are sequentially connected from top to bottom, the exhalation part 1, the connecting part 2 and the airway blocking part 3 are all fixed in an interference fit clamping mode, namely, the diameter of the lower end of the exhalation part 1 is slightly smaller than that of the upper end of the connecting part 2, the diameter of the lower end of the connecting part 2 is slightly smaller than that of the upper end of the airway blocking part 3, and the exhalation part 1, the connecting part 2 and the airway blocking part 3 are all made of medical grade Polycarbonate (PC) materials, the materials have certain rebound resilience, and all parts are connected in an interference fit mode, so that the stability of connection between all parts is guaranteed, and when one part needs to be replaced, the part is directly and manually extracted, and the replacement is convenient and quick.

Specifically, the upper end of the exhale piece 1 is flat structure, so that a user can better bite the upper end of the exhale piece 1, the flat structure is matched with the oral cavity structure of a human body, and meanwhile, soft medical grade Polycarbonate (PC) materials are utilized, lips and teeth are tightly attached through elastic deformation, so that a physical sealing barrier is formed, and gas leakage from a bite gap can be effectively prevented. In addition, the flat structure is more in line with the natural occlusion habit (such as the force direction of masticatory muscles) of a human body, and the occlusion looseness caused by muscle fatigue during testing is reduced.

Specifically, the middle part of connecting piece 2 is connected with pressure transducer 5 through connecting pipe 4, and connecting piece 2 is tee bend interface structure, including upper end interface, middle part interface and lower extreme interface, wherein the upper end interface is connected with the lower extreme of exhaling piece 1 through interference fit's mode, and the lower extreme interface is connected with the upper end of air flue obstruction piece 3 through interference fit's mode, and the middle part interface is connected with pressure transducer 5 through connecting pipe 4 to pressure transducer 5's monitoring probe extends to the middle part of connecting piece 2 through connecting pipe 4. When blowing into the exhalation part 1, the monitoring probe of the pressure transducer 5 extends to 1-2mm in the middle of the exhalation part 1, so that the upstream air pressure can be monitored in real time, and the normal flow of the air flow is not blocked. In the invention, the pressure transducer 5 monitors and collects the upstream air pressure in real time, and transmits the air pressure to the data acquisition module after being processed by the differential amplifying circuit, and the pressure transducer 5 is connected to the data acquisition module by the shielded cable, so that the cross interference is reduced, and the stability of the sampling signal is ensured.

Specifically, the airway obstruction member 3 includes an upper air inlet portion 301 and a lower air outlet portion 302, the upper end of the air inlet portion 301 is connected with the lower end of the connector 2 in an interference fit manner, the diameter of the upper end of the air inlet portion 301 is slightly smaller than that of the lower end of the connector 2, the lower end of the air inlet portion 302 is connected with the upper end of the air outlet portion 301 in an interference fit manner, the diameter of the lower end of the air inlet portion 302 is slightly smaller than that of the upper end of the air outlet portion 301, an adjusting structure is arranged in the middle of the air outlet portion 301, air flow exhaled by a user flows out through the air outlet portion 301, the adjusting structure is used for simulating exhalation resistance, and the aperture size of the middle of the air outlet portion 301 can be adjusted through the adjusting structure to simulate different ranges of exhalation resistance.

Specifically, the adjusting structure comprises a mounting ring 303, a mounting groove 306 is formed in the inner wall of the mounting ring 303, the mounting groove 306 is an annular groove and is coaxial with the mounting ring, an adjusting ring 305 and a plurality of arc-shaped blades 304 are rotatably mounted in the mounting groove 306, and the adjusting ring 305 is coaxial with the mounting ring 303. The arc blade 304 is equipped with three arc limit, and the central point indent of one arc border arc blade 304, and the central point evagination of remaining two arc border arc blade 304, and a plurality of arc blades 304 overlap each other and form the through-hole by the arc limit of indent in its overlapping center department, the arc limit of evagination with the laminating of the circumference outer wall of adjusting ring 305, when adjusting ring 305 rotates, drive the arc limit rotation of evagination, control the diameter size of through-hole through the separation of arc blade 304.

Since the adjusting ring 305 needs to be installed in the installation groove 306, that is, the outer diameter of the adjusting ring 305 is larger than the inner diameter of the installing ring 303, in order to facilitate the installation of the adjusting ring 305, the installing ring 303 is a fastening structure of up-down fastening, the joint surface during fastening and the middle point vertical tangential plane in the height direction of the installation groove 306 are the same plane, and the upper and lower parts of the installing ring 303 can be fixed by means of bolting after fastening.

As shown in fig. 7, the cross section of the mounting groove 306 is a T-shaped groove which is transversely arranged, the T-shaped groove comprises a vertical groove and a transverse groove, the length direction of the transverse groove points to the center direction of the mounting ring 303, wherein the vertical groove is used for mounting the adjusting ring 306, and the transverse groove is used for clamping the upper end face and the lower end face of the arc-shaped blade 304 so as to ensure the stability of the arc-shaped blade 304.

Be equipped with rubber layer 308 on the inner wall of two evaginations's arc limit and adjusting ring 305 of arc blade 304, when the outer evagination arc limit of arc blade 304 and the inner wall laminating of adjusting ring 305, two rubber layers 308 closely laminate, have great coefficient of friction between rubber layer 308 and the rubber layer 308, can provide great frictional force, guarantee that arc blade 304 can rotate along with the rotation of adjusting ring 305, simultaneously great frictional force can also effectually avoid arc blade 304 to slide from top to bottom left and right, has guaranteed the stability of arc blade 304.

Specifically, the outer wall of the air outlet portion 302 is provided with a pulling piece 307 for rotating the adjusting ring 305 at a position opposite to the adjusting ring 305, the pulling piece 307 comprises a pulling block 3071, a screw 3072 and a damping rubber block 3073, a threaded hole is formed in the middle of the pulling block 3071 and is used for being in threaded connection with the screw 3072, the damping rubber block 3073 is clamped on the outer wall of the air outlet portion 302, and when the screw 3072 is in threaded connection with the threaded hole of the pulling block 3071, one end of the screw 3072 penetrates through the damping rubber block 3073 and is inserted into the adjusting ring 305 to be in threaded connection with the adjusting ring 305. At this time, the rotation of the adjusting ring 305 can be controlled by pulling the dial 3071, and after the rotation of the adjusting ring 305 is completed, the position of the dial 3071 can be fixed and the dial 3071 is prevented from moving because the damping rubber 3073 is clamped in the outer wall of the air outlet portion 302.

Specifically, the outer wall of the air outlet portion 302 is provided with a scale 309, the scale 309 is located below the dial 307, as shown in fig. 3 and 4, the scale 309 is 4mm-16mm, which indicates the diameter of the through hole formed by the arc-shaped blade 304, that is, the adjustment range of the cross section area of the air passage is 12.56mm ² -200.96 mm ², the pathological state from slight to severe air passage stenosis can be simulated through different cross sections, and the cross section area of the air passage can be flexibly adjusted by stirring the dial 3071, so that the invention has a wide adjustment range, and compared with the traditional way of replacing the occluder with different diameters, the invention does not need to be disassembled and installed, and the adjustment is fast and convenient.

Specifically, a filter 6 is connected to the lower end of the air outlet 301, and a respiratory flow sensor 7 is connected to the filter 6. Particulate matter in the outside air can be filtered through the filter 6, interference to the respiratory flow sensor 7 is avoided, and it is noted that although the filter 6 can increase airway resistance within 0.3kPa, systematic errors can be eliminated through calibration of the respiratory flow sensor 7, and accuracy of data is ensured. The respiratory flow sensor 7 is used to monitor the expiratory flow in real time. In the present invention, the upstream air pressure P1 collected by the pressure transducer 5, in combination with the downstream atmospheric air pressure P0, can obtain the pressure difference Δp, namely:

ΔP=P1-P0

then, the exhalation resistance R can be obtained from the exhalation flow Q obtained by the flow sensor 7:

R=ΔP/Q

The flow sensor 7 and the transducer 5 are connected with a data acquisition module, the data acquisition module is connected with a processing module at the rear end, and the processing module is used for dynamically outputting an exhalation resistance curve and synchronously displaying pressure-time, flow-time waveforms and resistance-time curves.

(1) Unless otherwise defined, like reference numerals refer to like meanings in the embodiments of the disclosure and the drawings.

(2) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to the general design.

(3) In the drawings for describing embodiments of the present disclosure, components or regions are exaggerated for clarity. It will be understood that when an element is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (6)

1. The airway-adjustable blocking device is characterized by comprising an exhalation part (1), a connecting part (2) and an airway blocking part (3), wherein the exhalation part (1), the connecting part (2) and the airway blocking part (3) are hollow tubular and are sequentially connected from top to bottom, the airway blocking part (3) comprises an air inlet part (301) at the upper part and an air outlet part (302) at the lower part, the upper end of the air inlet part (301) is connected with the lower end of the connecting part (2), the lower end of the air inlet part (302) is connected with the upper end of the air outlet part (301), the middle part of the air outlet part (301) is provided with an adjusting structure, the adjusting structure comprises a mounting ring (303), the inner wall of the mounting ring (303) is provided with a mounting groove (306), the mounting groove (306) is rotatably provided with an adjusting ring (305) and a plurality of arc blades (304), the arc blades (304) are provided with three arc edges, the center points of one arc edge arc blade (304) are concave inwards, the remaining arc blades (304) are overlapped with the center points of the arc blades (305) when the arc blades (305) are overlapped with each other, and the arc edges of the arc blades (305) are overlapped with each other when the arc edges are rotated, the diameter of the through hole is controlled by the separation of the arc-shaped blades (304).

2. The airway-adjustable obstruction device according to claim 1, wherein a dial (307) for rotating the adjusting ring (305) is provided on the outer wall of the air outlet portion (302) facing the adjusting ring (305).

3. An airway-adjustable occlusion device according to claim 2, wherein the outer wall of the outlet portion (302) is provided with graduations (309), the graduations (309) being located below the paddle (307).

4. An airway-adjustable occlusion device according to claim 3, wherein the middle part of the connector (2) is connected to a pressure transducer (5) via a connecting tube (4).

5. An airway-adjustable occlusion device according to claim 4, wherein the lower end of the outlet portion (301) is connected to a filter (6).

6. An airway-adjustable occlusion device according to claim 5, wherein said filter (6) is connected to a respiratory flow sensor (7).