CN100446825C

CN100446825C - Quantitative powder inhalator

Info

Publication number: CN100446825C
Application number: CNB2006100441705A
Authority: CN
Inventors: 李国华; 杜继斌; 将光春; 聂涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-12
Filing date: 2006-05-12
Publication date: 2008-12-31
Anticipated expiration: 2026-05-12
Also published as: CN1846800A

Abstract

The present invention discloses a quantitative dry powder inhalation device which comprises an oral sucker, wherein the oral sucker is provided with an air suction channel, a medicinal powder transferring channel, a first disk, a second disk and a medicine storage device; one end of the air suction channel is provided with a suction nozzle, and the other end of the air suction channel is communicated with the atmosphere; the medicinal powder transferring channel is transversally communicated with the air suction channel; the first disk and the second disk are overlapped together and are movably connected with each other; the medicine storage device of which one end is provided with an opening is fixed in an axial through hole of the first disk; the oral sucker is fixed on the first disk, and the second disk is provided with a medicinal powder pool. The first disk is provided with two working positions corresponding to the second disk; one of the working positions is a first working position by which the medicine storage device is communicated with the medicinal powder pool, and the other position is a second working position by which the medicinal powder transferring channel is communicated with the medicinal powder pool. The present invention has the advantage of high safety; the quantitative inhalation of medicinal powder can be completed by the present invention, and the present invention can be used repeatedly.

Description

Quantitative powder inhalator

Technical field

The present invention relates to a kind of suction apparatus, relate in particular to a kind of quantitative powder inhalator that in the anapnotherapy of diseases such as asthma, uses.

Background technology

In decades, suck the updating of preparation, dosage form and device of medicine along with asthma, anapnotherapy has become the first-selected medication for the treatment of asthma.Because powder inhaler do not contain propellant, need not advantage such as the cooperation of patient's hands and breathing and high bioavailability during medication and be widely used in clinical.The scope of application is more extensive in recent years, develop to antibiotic (as tobramycin), biochemical drug and genomic medicine from single treating asthma medicine, as treat osteoporosis agents raloxifene powder spray, salmon calcitonin powder spray, treatment diabetes medicament insulin powder spray, and vassopressin of developing, interferon, interleukin or the like.

Market has multiple powder inhaler now, and each installs design principle and is not quite similar, except that single-dose type (as rotating inhaler etc.), and all not reproducible use of all the other powder inhalers.Cause the patient to repeat to buy suction apparatus, increased the weight of the patient treatment expense, bring unnecessary financial burden to the patient.The present multiple dose type that uses (standard receive device etc.) and store dosage form (all protects etc.) the equal complex structure of powder inhaler, expensive, be difficult in the vast rural area of China promote, universal.

Known rotation inhaler is a kind of single dose capsule inhaler, and during use, medicament capsule places bottom of device, and after both sides acupuncture was broken, capsule discharged the drug particles that it includes simultaneously with sucking the air-flow rotation.That installs is simple in structure, easy to use, and inherent resistance is low.But there is following shortcoming in it: powder charge at every turn when 1) using; 2) when inhaling medicine, the capsule shells of fragmentation might be sucked in the lung, bring the potential safety hazard of treatment; 3) the part capsule is difficult for puncturing, and medicated powder is difficult to exhaustion.

Summary of the invention

Technical problem to be solved by this invention is: a kind of quantitative powder inhalator is provided, and to solve in the medicated powder suction process, the capsule shells with fragmentation sucks in the lung easily, causes the problem of potential safety hazard.

For solving the problems of the technologies described above, technical scheme of the present invention is: quantitative powder inhalator, comprise a mouthful haustorium, it is the air intake passage that communicates with atmosphere of the suction nozzle other end and one and the medicated powder transmission channels of described air intake passage cross connection that described mouthful haustorium is provided with one one end; First dish that is stacked together and flexibly connects and second dish, an end opening also is fixed in the interior medicine storage of described first axially extending bore that coils, and described mouthful of haustorium is fixed in described first dish, and described second dish is provided with a medicated powder pond; Described first dish has two operating positions with respect to second dish, and one is first operating position that described medicine storage is communicated with the medicated powder pond, and another is second operating position that described medicated powder transmission channels is communicated with the medicated powder pond.

As a kind of improvement, described mouthful haustorium comprises a partition wall that extends transversely in the described air intake passage, communicates at described partition wall place near the back air intake passage of suction nozzle with away from the preceding air intake passage of suction nozzle, and described medicated powder transmission channels is arranged in the described partition wall.

Improve as another kind, described mouthful of haustorium also comprises a secondary air passage that laterally communicates with described preceding air intake passage, the position that communicates with described medicated powder pond when another opening of described secondary air passage is located at second operating position.

After having adopted technique scheme, because first dish and second dish are stacked together and flexibly connect, the medicine storage of one end opening is fixed in the axially extending bore of described first dish, the mouth haustorium that is fixed in described first dish is provided with two passes, article one, be that an end is the air intake passage that the suction nozzle other end communicates with atmosphere, another is and the medicated powder transmission channels of described air intake passage cross connection that second dish is provided with a medicated powder pond; So when first dish moved to first operating position with respect to second dish, medicine storage communicated with the medicated powder pond, medicated powder enters the medicated powder pond in the medicine storage under the effect of gravity, by setting the volume in medicated powder pond, determines the dosage of each medication; When first dish moves to second operating position with respect to second dish, stating the medicated powder transmission channels communicates with the medicated powder pond, at this moment, the patient is air-breathing by suction nozzle, produce the air-flow of motion at air intake passage, this air-flow produces negative pressure at the connected entrance place of medicated powder transmission channels, and medicated powder imports air intake passage by the medicated powder transmission channels in the medicated powder pond thereby make, in air-flow is inhaled into lung.When reusing, only need to repeat above-mentioned steps and get final product.In powder charge process, medicated powder is to lean on gravity to enter the medicated powder pond by the opening of medicine storage, without any the fragmentation of object, thereby does not have potential safety hazard when sucking medicated powder.Moreover, quantitative powder inhalator can also repeatedly use, and has reduced patient's use cost.

Because described mouthful of haustorium comprises a partition wall that extends transversely in the described air intake passage, described medicated powder transmission channels be arranged at described in, so though air intake passage communicates in front and back, partition wall place but area of passage reduces, thereby the flow velocity of the air-flow herein of flowing through is increased, consequent negative pressure strengthens, thereby the easier air intake passage that is inhaled into of medicated powder.Utilize vortex principle,, can make medicated powder disperse more equably, improve sucking effect by setting the shape of partition wall.

Because described mouthful of haustorium also comprises a secondary air passage that laterally communicates with described preceding air intake passage, when being in second operating position, another opening of secondary air passage communicates with described medicated powder pond, thereby when sucking, air-flow in the preceding air intake passage can enter the medicated powder pond by the secondary air passage, medicated powder in the pond is blown into the medicated powder transmission channels, be similar to the effect of scraping, make the medicated powder of doses in the medicated powder pond can be divided into repeatedly suction, when avoiding once sucking, medicated powder is easy to stimulate bottleneck throat to cause to choke and cough and pharyngeal discomfort in the bottleneck throat deposition, is unfavorable for that medicated powder sedimentary problem in lung takes place.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is the perspective view of the embodiment of the invention;

Fig. 2 be embodiment illustrated in fig. 1 in the fundamental diagram of first operating position;

Fig. 3 be embodiment illustrated in fig. 1 in the fundamental diagram of second operating position.

The specific embodiment

A kind of quantitative powder inhalator, as shown in Figure 1, a mouthful haustorium 3 is fixed in first dish, 2, the first dishes, 2 and second dish 8 and is stacked together and is rotatably connected around a pivot 7.As shown in Figure 3, to be provided with one one end be 32, one of the air intake passages that communicate with atmosphere of the suction nozzle other end and medicated powder transmission channels 33 and a secondary air passage 34 of described air intake passage 32 cross connections for mouthful haustorium 3.Partition wall 31 extends transversely in the described air intake passage 32, communicate at described partition wall place near the back air intake passage of suction nozzle with away from the preceding air intake passage of suction nozzle, described medicated powder transmission channels 33 is arranged in the described partition wall 31, the air inlet of secondary air passage 34 laterally communicates with preceding air intake passage, the effect of partition wall 31 is to reduce area of passage, the flow velocity of the air-flow herein of flowing through is increased, and negative pressure strengthens, thereby the easier air intake passage that is inhaled into of medicated powder.Utilize vortex principle,, can make medicated powder disperse more equably, improve sucking effect by setting the shape of partition wall.As shown in Figure 1, the medicine storage 4 of an end opening is fixed in the axially extending bore of described first dish 2.Described second dish 8 is provided with one and described pivot 7 concentric cannelures 81, medicated powder pond 82 is positioned at the downside of cannelure bottom surface, the opening of the opening of described medicine storage 4 and medicated powder transmission channels 33 and secondary air passage 34 stretches into respectively in the described cannelure 81, limits the relative rotation position of first dish, 2 and second dish 8 by two ends of cannelure 81.

As shown in Figure 2, when first dish 2 with respect to second dish 8 when turning to first operating position, the operating position that communicates with medicated powder pond 82 of medicine storage 4 just, at this moment, medicine storage 4 interior medicated powder enter medicated powder pond 82 under the effect of gravity.As shown in Figure 3, first dish 2 is done rightabout rotation with respect to second dish 8, medicated powder transmission channels 33 and secondary air passage 34 are communicated simultaneously with medicated powder pond 82, second operating position just, at this moment, the patient is air-breathing by suction nozzle, make air intake passage 32 produce the air-flow of motion, this air-flow produces negative pressure at the connected entrance place of medicated powder transmission channels 33, thereby makes the medicated powder in the medicated powder pond 82 import air intake passage 32 by medicated powder transmission channels 33, in air-flow is inhaled into lung; Meanwhile, another opening of secondary air passage communicates with described medicated powder pond, thereby when sucking, air-flow in the preceding air intake passage can enter medicated powder pond 82 by secondary air passage 34, medicated powder in the pond is blown into medicated powder transmission channels 33, be similar to the effect of scraping, make the medicated powder of doses in the medicated powder pond 82 can be divided into repeatedly suction, when avoiding once sucking, medicated powder is easy to deposit at bottleneck throat, stimulate bottleneck throat to cause to choke and cough and pharyngeal discomfort, be unfavorable for that medicated powder sedimentary problem in lung takes place.

As shown in Figure 1, the hinged suction nozzle cover 35 in suction nozzle place of mouthful haustorium 3.On the one hand, can prevent that in time spent not foreign body such as dust from entering air intake passage 32, keeps the clean hygiene of suction nozzle; On the other hand, when uncapping, by the power of uncapping, mouthful haustorium 3 drives first dish 2 and rotates, and is located at second operating position, uncaps and just can inhale medicine; Close when covering, mouthful haustorium 3 drives first dish 2 to counter-rotation, makes it just in time be positioned at first operating position, finishes powder charge, uses convenient.

Medicine storage 4 and second dish, 8 detachable fixedlying connected are convenient to the patient and are changed medicine storage 4.Like this, this quantitative powder inhalator can be reused, but also can finish the suction of different medicines, enlarged the scope of medication of this quantitative powder inhalator with same quantitative powder inhalator.

First dish 2 is equipped with enumerator 6, though enumerator is known a kind of technological means, after first dish 2 is installed enumerator, by surveying the number of times that relatively rotates of first dish, 2 and second dish 8, can know clearly very much remaining dose in the medicine storage 4, be convenient to the patient and change medicine storage 4.Certainly, enumerator 6 also can be installed in the appropriate location of second dish 8.

Be provided with standby medicine storehouse on first dish 2, standby medicine storehouse is used to place standby medicine storage 5, has guaranteed the seriality of patient's long-term prescription.

Lid 1 is installed on first dish 2, is used for the space on the top of closing cap 1, and the suction nozzle of mouthful haustorium 3 stretches out and covers 1, is convenient to the patient and uses.

The present invention is not limited to above-mentioned embodiment, first dish and second dish also can be other movable connection methods, for example first dish and second is coiled and be arranged to the mode of connection that groove along a straight line reciprocatingly slides, as long as first dish has two operating positions with respect to second dish, an operating position described medicine storage is communicated with the medicated powder pond, described medicated powder transmission channels is communicated with the medicated powder pond get final product.

Claims

1, quantitative powder inhalator, comprise a mouthful haustorium (3), it is the air intake passage (32) that the suction nozzle other end communicates with atmosphere that described mouthful haustorium (3) is provided with one one end, it is characterized in that: described mouth haustorium (3) is provided with a medicated powder transmission channels (33) with described air intake passage (32) cross connection; This quantitative powder inhalator also comprises first dish (2) and second dish (8) that is stacked together and flexibly connects, one end opening and be fixed in described first the dish (2) axially extending bore in medicine storage (4), described mouthful of haustorium (3) is fixed in described first dish (2), and described second dish (8) is provided with a medicated powder pond (82); Described first dish (2) has two operating positions with respect to second dish (8), one is first operating position that described medicine storage (4) is communicated with medicated powder pond (82), and another is second operating position that described medicated powder transmission channels (33) is communicated with medicated powder pond (82).

2, quantitative powder inhalator as claimed in claim 1, it is characterized in that: described mouthful of haustorium (3) comprises a partition wall (31) that extends transversely in the described air intake passage (32), communicate at described partition wall place near the back air intake passage of suction nozzle with away from the preceding air intake passage of suction nozzle, described medicated powder transmission channels (33) is arranged in the described partition wall (31).

3, quantitative powder inhalator as claimed in claim 2, it is characterized in that: described mouthful of haustorium (3) also comprises a secondary air passage (34) that laterally communicates with described preceding air intake passage, the position that communicates with described medicated powder pond (82) when another opening of described secondary air passage (34) is located at second operating position.

4, described quantitative powder inhalator as claimed in claim 3 is characterized in that: described first dish (2) is rotatably connected around a pivot (7) with second dish (8).

5, quantitative powder inhalator as claimed in claim 4, it is characterized in that: described second dish (8) is provided with one and the concentric cannelure of described pivot (7) (81), described medicated powder pond (82) is positioned at the downside of cannelure bottom surface, and the opening of the opening of described medicine storage (4) and medicated powder transmission channels (33) and secondary air passage (34) stretches into respectively in the described cannelure (81).

6, quantitative powder inhalator as claimed in claim 5 is characterized in that: the hinged suction nozzle cover in suction nozzle place (35) of described mouthful of haustorium (3).

7, quantitative powder inhalator as claimed in claim 1 is characterized in that: (2) are detachable fixedlys connected for described medicine storage (4) and described first dish.

8, quantitative powder inhalator as claimed in claim 1 is characterized in that: described first dish (2) or second dish (8) are equipped with enumerator (6).