CN115814218A

CN115814218A - Powder aerosol inhalation apparatus with separation prevention structure

Info

Publication number: CN115814218A
Application number: CN202310108307.2A
Authority: CN
Inventors: 陈岚; 陈东浩; 陈晖�
Original assignee: Hangzhou Xixi Pharmaceutical Co ltd
Current assignee: Hangzhou Xixi Pharmaceutical Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-03-21
Anticipated expiration: 2043-02-14
Also published as: CN115814218B

Abstract

The invention discloses a powder aerosol inhalation apparatus with a separation prevention structure, which comprises an upper structure, a lower structure and a puncture structure; the upper structure moves in a vertical direction relative to the lower structure; the puncturing structure comprises a puncturing needle; the upper structure comprises a capsule bin and a puncture channel outside the capsule bin; the puncture channel provides a puncture track for lateral puncture movement of the puncture needle; the upper structure and the lower structure are driven to puncture the capsule in the capsule bin from the puncture channel while moving relatively in the longitudinal vertical direction; the anti-separation structure is arranged to ensure vertical movement and prevent the upper structure from being separated from the lower structure after the upper structure and the lower structure are combined. The separation prevention structure can be a limiting rod which is provided with a locking protrusion and extends out of the upper structure; and a spacing protrusion corresponding to the locking protrusion, or the separation prevention structure includes an interconnecting link; the interconnecting connecting rod is a diamond connecting rod with two free sides or an inclined main connecting rod which can simultaneously perform vertical movement and lateral puncture.

Description

Powder aerosol inhalation apparatus with separation prevention structure

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to the field of inhalation appliances for inhaling dry powder to act on the lung through mouth; in particular to a powder aerosol inhalation apparatus with a separation prevention structure.

Background

A new inhalation device developed in the dry powder inhaler following the metered dose inhaler; the medicine powder does not contain a propellant, the medicine powder is driven into an air passage by using the inspiratory airflow of a patient, the medicine deposited on the lower respiratory tract accounts for 10-30 percent, the medicine is slightly higher than a quantitative inhaler, the medicine can be matched with the inspiratory patient to be suitable, and the medicine is generally used for the patient over 4 years old, and the applicable crowd range is very wide.

The existing aerosol inhalation devices comprise a blister type inhalation device and a capsule type inhalation device, and a pen-shaped inhalation device and an elliptical holding type inhalation device exist for the capsule type inhalation device. A puncture structure for puncturing the capsule exists for the capsule type inhalation apparatus; in particular to an elliptical holding type capsule inhalation apparatus; the puncture structure of the existing capsule type atomized powder inhalation apparatus is arranged on the side surface of the bottom of the whole structure and is arranged on one side or two sides, such as an inhalation device CN 215083633U and a capsule breaking mechanism CN 105920709B of an atomized powder administration device; the puncture structure comprises an elastic pressing structure at the side and a puncture needle connected with the elastic pressing structure no matter on one side or on both sides; the capsule is punctured from the side by driving the puncture needle through the elastic pressing structure on the side, and the pressing direction of the elastic pressing structure is consistent with the moving direction of the puncture needle; however, the technical problems of the aerosol inhalation device type with the elastic pressing structure and the puncturing structure are as follows: 1) The lateral pressing elastic pressing structure is arranged in a mode that the forefinger and the thumb of a single hand are required to be transversely opened and pressed in a coordinated manner, and the force exerting direction is transverse force exerting which is not good; the force of the hand required by pressing is large, the force is not easy to apply, and the operation of puncturing the structure is difficult to complete for the patient with small hand force; 2) In addition, the arrangement of the elastic pressing structure on the lateral surface of the instrument can cause large width on both sides, integral aesthetic property and large transverse distance, which is also one of the factors increasing the operation difficulty.

The invention provides a powder aerosol inhalation apparatus with a separation prevention structure, aiming at the problems of large operation force requirement, large transverse width and the like in the technical scheme that the pressing direction of an elastic pressing structure is consistent with the movement direction of a puncture needle.

Disclosure of Invention

The background technology finds out the problem that the powder aerosol inhalation apparatus provided with the separation prevention structure and the piercing direction is consistent with the pressing direction, when the piercing direction is inconsistent with the pressing direction, when the solution idea of realizing lateral piercing by vertical movement is provided, the powder aerosol inhalation apparatus is necessarily two parts of up-and-down movement, and the problem of realizing effective movement of an upper structure and a lower structure without separation is required to be solved, the invention adopts the following technical scheme:

a powder inhalation apparatus with separation preventing structure comprises an upper structure, a lower structure and a puncture structure; the upper structure moves longitudinally and vertically relative to the lower structure; the puncturing structure comprises a puncturing needle; the upper structure comprises a capsule bin and a puncture channel outside the capsule bin; the puncture channel provides a puncture track for lateral puncture movement of the puncture needle; a matching structure is arranged among the upper structure, the lower structure and the puncture structure and is used for realizing the relative motion of the upper structure and the lower structure in the longitudinal vertical direction and simultaneously driving the puncture needle to puncture the capsule in the capsule bin along the puncture channel; a suction nozzle is arranged above the upper structure; the anti-separation structure is arranged to ensure vertical movement and prevent the upper structure from being separated from the lower structure after the upper structure and the lower structure are combined.

Preferably, the separation prevention structure comprises a stopper rod extending below the upper structure; the lowest part of the limiting rod is provided with a locking bulge; the length of the limiting rod is not less than the longitudinal vertical movement distance between the upper structure and the lower structure; the lower structure is provided with a limit protrusion matched with the locking protrusion.

Preferably, the length of the limiting rod from the locking protruding part to the lowest end of the upper structure is equal to the longitudinal vertical movement distance between the upper structure and the lower structure. This arrangement prevents wobbling.

Preferably, the limiting protrusion is a protrusion structure extending from the side wall of the lower structure,

or the lower structure is provided with a moving groove for the locking protrusion to move, and the limiting protrusion is a top body arranged at the top of the moving groove from the groove bottom to the side wall of the lower structure.

Preferably, the length of the moving groove is equal to the length of the limiting rod.

Preferably, a guide groove is arranged above the moving groove, the direction and the width of the guide groove are completely consistent with those of the moving groove, the lower end point of the guide groove is the uppermost limit protrusion, a guide surface is arranged on the uppermost limit protrusion, and the entering of the limit rod during combination can be well increased through the arrangement of the guide surface.

Preferably, at least 1 pair of limiting rods and corresponding motion grooves are symmetrically arranged on the left side wall, the right side wall or the front side wall and the rear side wall; wherein, a better mode is that 2 pairs of limiting rods and corresponding motion grooves are symmetrically arranged on the left side wall, the right side wall or the front side wall and the rear side wall around the capsule bin.

Alternatively, the anti-detachment structure comprises a connecting structure, preferably an interconnecting link, which interconnects without affecting the longitudinal vertical movement; the interconnecting connecting rod is provided with connecting parts with the upper structure and the lower structure. The interconnecting connecting rods can be 4 diamond-shaped connecting rods with two free side ends and upper and lower sides respectively connected with an upper structure and a lower structure.

Or the interconnecting connecting rod at least comprises a main connecting rod connected with the side edge of the lower structure, the other end of the main connecting rod is connected with the puncture structure, and the puncture structure always comprises a puncture needle part in the puncture channel. By the mode, separation prevention can be realized, and puncture movement of the puncture needle, which is realized by relative movement in the longitudinal vertical direction through the main connecting rod, can also be realized. Preferably, the master link moves in a plane.

Preferably, in a static state, an inosculating platform which is consistent with the shape of the cavity above the lower structure is arranged above the upper structure; the upper plane of the anastomosis table is horizontal to the upper plane of the upper cavity of the lower structure. The arrangement can well protect the internal structures of the upper structure and the lower structure from being polluted.

Preferably, an operating platform with a distance L from the anastomosis platform is further arranged above the upper structure; the distance of L is not less than the longitudinal vertical movement distance of the upper structure and the lower structure, the arrangement can ensure the cheapness of operation, and the operation table is prevented from entering the upper cavity of the lower structure and being not operated well.

Preferably, the peripheral shape of the console corresponds to the peripheral shape of the anastomosis console.

Preferably, a reset structure of the locking protrusion contact limiting protrusion in an unused state is arranged at the bottom of the upper structure and the lower structure.

The invention has the beneficial effects that: regardless of the arrangement mode of the puncturing base and the inclined track or the arrangement mode of the connecting rod structure, the puncturing needle can puncture the capsule from the side by combining with the vertical movement of the upper structure and the lower structure. Through setting up the effectual separation structure of preventing, can solve the motion and spacing of top structure and below structure in the vertical movement in-process effectively, prevent to take place excessive motion.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention without a protective cap;

FIG. 2 is a schematic longitudinal cross-sectional view of the present invention without the protective cap;

FIG. 3 is a schematic view of a suction channel segment according to the present invention;

FIG. 4 is a schematic view of a nozzle segment according to the present invention;

FIG. 5 is a schematic structural view of the lower structure of the present invention in a left-right longitudinal cross section;

FIG. 6 is a front-back longitudinal sectional view of the overall structure of the separation prevention structure with a stop lever according to the present invention;

FIG. 7 is a schematic view of the upper and lower structures of the present invention;

FIG. 8 is a partial longitudinal cross-sectional structural illustration of the upper and lower structures of an embodiment of the grooved slanted track of the present invention;

FIG. 9 is a schematic view of an upper structure and piercing base structure of an embodiment of a grooved angled track of the present invention;

FIG. 10 is a schematic top view of an embodiment of a groove-type inclined rail of the present invention;

FIG. 11 is a schematic view of a piercing structure according to an embodiment of the groove-shaped inclined rail of the present invention;

FIG. 12 is a structural schematic view of a groove-type inclined rail embodiment of the present invention in a non-piercing state;

FIG. 13 is a structural schematic view of a puncturing status of an embodiment of a grooved slanted track of the present invention;

FIG. 14 is a schematic diagram of the upper and lower structures of the tilted master link according to the present invention, wherein the upper structure does not show a finger rest area;

FIG. 15 is a side-to-side longitudinal cross-sectional view of the upper and lower structures of the tilted master link embodiment of the present invention without the finger rest area shown in the upper structure;

FIG. 16 is a schematic view of the upper structure link structure and the lancet assembly of the tilted main link embodiment of the present invention;

FIG. 17 is a schematic view of a linkage structure and lancet assembly according to an embodiment of the tilting main linkage of the present invention;

FIG. 18 is a side-to-side longitudinal cross-sectional view of an embodiment of the tilt master link of the present invention in the unpierced state;

FIG. 19 is a schematic side-to-side longitudinal cross-sectional view of an embodiment of a canted master link of the present invention in a penetrating state;

in the figure, 1, the upper structure; 111. a capsule cabin; 112. rotating the bin; 1121. an airflow passage port; 12. piercing the channel; 2. a lower structure; 21. an accommodating chamber; 3. puncturing the needle; 31. a needle seat; 4. a return spring; 41. an upper lumen; 42. a lower lumen; 51. a limiting rod; 52. locking the protrusion; 53. a motion groove; 54. the limiting protrusion is arranged; 55. a guide groove; 56. a guide surface; 571. a direction guide groove; 572. a direction guide post; 61. a finger placement structure; 611. anti-skid lines; 62. a suction channel section; 621. a cylindrical passage tube; 63. a suction nozzle section; 631. an anastomosis tube; 64. a protective cap; 71. a groove-shaped inclined track; 711. a guide opening; 72. piercing the base; 721. a protruding post; 722. a cylindrical body; 723. a cylindrical cavity; 724. a secondary adaptation slot; 725. a second-order adaptation process; 851. a bottom structure; 852. a bottom cavity; 853. a secondary adaptive cavity; 854. a secondary adapter rod; 91. a main link; 921. operating a cavity channel; 922. a plate-shaped structure; 93. a holding link; 94. a connecting rod connecting part.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Example 1

A powder aerosol inhalation apparatus with a separation prevention structure comprises an upper structure 1, a lower structure 2 and a puncture structure; the upper structure 1 moves relative to the lower structure 2 in the longitudinal vertical direction; the puncturing structure comprises a puncture needle 3; the upper structure 1 comprises a capsule bin 111 and a puncture channel 12 outside the capsule bin 111; the puncture channel 12 provides a puncture track for the lateral puncture motion of the puncture needle 3; the upper structure 1 and the lower structure 2 move relatively in the vertical direction and drive the puncturing structure to puncture the capsule in the capsule bin 111 from the puncturing channel 12. The puncture channel 12 is oriented in a horizontal direction or in an obliquely upward or obliquely downward direction. So as to realize the puncture of the capsule from the horizontal side, the upper side or the lower side. A matching structure is arranged between the puncturing structure and the upper structure 1 and the lower structure 2, and the matching structure realizes that the upper structure 1 and the lower structure 2 generate relative motion in the vertical direction and simultaneously drives the puncturing structure to puncture the capsule in the capsule bin 111 from the puncturing channel 12, referring to fig. 1, 6, 7, 12 and 13.

The shape and movement relationship between the lower structure 2 and the upper structure 1 is implemented in such a way that the lower structure 2 is provided with a containing cavity 21 for containing the upper structure 1 and the puncture structure; the upper structure 1 undergoes a longitudinal vertical relative movement inside the housing cavity 21 of the lower structure 2. The upper structure 1 further includes a rotary bin 112 disposed above the capsule bin 111, and inclined air flow passage ports 1121 are disposed at both sides of the rotary bin 112. A return structure, preferably a return spring 4, is provided to effect the kinematic return of the upper structure 1 and the lower structure 2, with reference to fig. 1, 6, 7, 8.

The separation prevention structure is arranged to ensure vertical movement and prevent the upper structure 1 from separating from the lower structure 2 after combination; the specific anti-separation structure can be implemented in any locking manner, for example, the anti-separation structure comprises a limiting rod 51 extending below the upper structure 1; the lowest part of the limiting rod 51 is provided with a locking projection 52; the length of the limiting rod 51 is not less than the longitudinal vertical movement distance between the upper structure 1 and the lower structure 2; a moving groove 53 for the movement of the locking protrusion is correspondingly arranged on the side wall of the lower structure 2, and a limiting protrusion 54 matched with the locking protrusion 52 is arranged at the uppermost part of the moving groove 53; the length of the movement slot 53 is equal to the length of the stop lever 51, see fig. 5-7.

In a more preferred embodiment, a guide groove 55 is provided above the moving groove 53, the direction and width of the guide groove 55 completely match the moving groove 53, the lower end point of the guide groove 55 is the uppermost point of the stopper protrusion 54, and a guide surface 56 is provided at the uppermost point of the stopper protrusion, so that the entrance of the stopper rod 51 during assembly can be increased by providing the guide surface 56. In order to ensure the stable and balanced arrangement, at least 1 pair of limiting rods 51 and corresponding motion grooves 53 are symmetrically arranged on the left side wall, the right side wall or the front side wall and the rear side wall; among them, 2 pairs of the stopper rods 51 and the corresponding moving grooves 53 are preferably provided symmetrically on the left and right side walls or the front and rear side walls around the capsule chamber 111, as shown in FIGS. 5 to 7.

Another embodiment of the anti-detach structure is that the anti-detach structure comprises connecting structures, preferably interconnecting links, which interconnect without affecting the longitudinal vertical movement. The interconnecting links may be 4 diamond links with free ends and upper and lower ends connected to the upper and

lower structures

1 and 2, respectively. The other implementation mode is as follows: the interconnecting linkage comprises at least one main linkage 91 connected with the side edge of the lower structure 2, the other end of the main linkage 91 is connected with a puncture structure, and the puncture structure always comprises a puncture needle part in the puncture channel. By the mode, separation prevention can be realized, and puncture movement of the puncture needle, which is realized by relative movement in the longitudinal vertical direction through the main connecting rod 91, can also be realized. And the master link 91 moves in one plane. Refer to fig. 15.

In order to increase the convenience degree of hand force application operation when the upper structure 1 and the lower structure 2 vertically move in the longitudinal direction, finger placing structures 61 are arranged on the left side and the right side above the upper structure 1 in an extending mode; the finger placement structure 61 is an arc-shaped structure. The outermost peripheral shape of the finger placement structure 61 corresponds to the uppermost shape of the receiving cavity 21 of the underlying structure 2, see fig. 2, 3 and 8.

Example 2

On the basis of embodiment 1, the puncture structure further comprises a puncture base 72, and the puncture base 72 is provided with a puncture needle 3; the lower structure 2 is provided with an inclined track for realizing the inclined movement of the puncture base 72; the inclined direction of the inclined track is the direction inclined from the upper edge position of the lower structure 2 to the lower part gradually and towards the capsule bin 111, and the arrangement can realize that the puncturing base 72 generates the puncturing movement towards the capsule bin 111 when the lower structure 2 generates the upward longitudinal vertical relative movement. The engagement structure is the puncture base 72 and the inclined rail engaged therewith, as shown in fig. 2 and 8.

The piercing direction of the piercing passage 12 is horizontal or inclined upward or inclined downward, and the piercing direction of the piercing passage 12 and the longitudinal vertical movement direction of the upper structure 1 and the lower structure 2 can be combined into a combined movement direction in the inclined track direction. This arrangement effectively ensures the possibility of arrangement of various inclined rails, as shown in fig. 2.

The combined piercing distance and vertical movement distance of piercing base 72 in piercing channel 12 is the tilting movement distance on the tilting track. After the inclination angle of the inclined rail is determined, the proportional relation of the puncture channel 12 and the longitudinal vertical movement distance of the upper structure 1 and the lower structure 2 is determined according to the inclination angle of the inclined rail. Alternatively, the inclination angle may be calculated based on the desired vertical movement distance and the movement distance of puncture channel 12. This way the values of the various parameters can be determined relatively quickly, see fig. 8, 11.

Taking the puncture channel 12 direction as the horizontal direction as an example, the length of the inclined track is L1; the relationship between the puncture distance L2 of the puncture needle 3 and the longitudinal vertical movement distance L3 of the upper structure 1 and the lower structure 2 is as follows: the length of L1 is greater than the length of the hypotenuse of the right triangle formed by L2 and L3, see fig. 2.

Example 3

In the first embodiment of the inclined rail according to example 2, the inclined rail is a groove-shaped inclined rail 71 provided on the front and rear side walls of the lower structure 2, and the piercing base 72 is provided with a protruding column 721 extending into the groove-shaped inclined rail 71; the slot-shaped mouth of the slot-shaped inclined track 71 is a "mouth" or "T" shaped mouth, and the piercing base 72 is disposed one or both around the capsule magazine 111, see fig. 6-9.

The single-side piercing embodiment is: when the single-side puncture is performed, one puncture base 72 is arranged, and two groove-shaped inclined rails 71 are arranged on the front side wall and the rear side wall of the lower structure 2; each puncture base 72 is provided with a protruding column 721 extending into the groove-shaped track at the front side and the rear side; and the puncture structure is provided with two parallel puncture needles 3 and two parallel puncture channels 12 arranged on the same side, refer to fig. 5, 8 and 9.

The two-side puncture embodiment is as follows: when the two sides are punctured, two puncture bases 72 are arranged, and 4 groove-shaped inclined rails 71 are arranged; each puncture base 72 is provided at the front and rear sides with a projecting post 721 projecting into the groove-shaped rail. The better implementation mode is as follows: 2 piercing

bases

72 and 4 grooved inclined tracks 71 are symmetrically arranged around the capsule magazine 111. On one lancing structure, 1 lancet 3 is arranged, and on both sides, two parallel or collinear lancing channels 12 are arranged, see fig. 5-9.

A movement guide structure for ensuring the movement of the puncture base 72 along the puncture channel 12 is added, an adapting part adapted to the movement guide structure is arranged on the puncture base 72, and the adapting part is adapted to move on the movement guide structure; the motion guide structure is a cylindrical body 722 or a cylindrical cavity 723 which extends from the left side wall and the right side wall of the upper structure 1 or the lower structure 2; the direction of the movement guide structure is parallel to the puncture channel 12. In a more preferred embodiment, the motion guiding structure is a cylindrical body 722 or a cylindrical cavity 723 protruding from the sidewall of the upper structure 1, see fig. 2 and 8.

The motion guide structure and the adaptation part are adapted in the following way: in one embodiment, when the motion guiding structure is a cylinder 722, the adapter is a cylindrical cavity 723 that fits over the cylinder 722. Protruding posts 721 extend outside the front and rear walls of the cylindrical cavity 723. In another embodiment, when the motion-guiding structure is a cylindrical cavity 723, the adapter is a cylinder 722 disposed within the cylindrical cavity 723. The outside of the front and back walls of the cylindrical body 722 extends out of the protruding column 721; the front and rear side walls of the cylindrical cavity 723 are provided with transverse through-notches for extending the protruding pillars 721 and ensuring the protruding movement, refer to fig. 8 and 9.

To better achieve the fitting of the motion guiding structure to the fitting part, a secondary fitting groove 724 is provided in the cylindrical cavity 723, and a secondary fitting protrusion 725 is provided on the cylindrical body 722; it is better to arrange the secondary fitting grooves 724 symmetrically inside the front and back side walls or inside the upper and lower side walls of the cylindrical cavity 723. To better dispose lancet 3 on piercing base 72, a needle seat 31 portion for accommodating lancet 3 is provided; the puncture needle 3 and the needle seat 31 are integrally connected or combined in a mode that the position is unchanged after combination. Setting the position relation between the needle seat 31 part and the motion guiding structure, wherein the needle seat 31 part is arranged above the motion guiding structure; and the needle seat 31 has smaller volume than the movement guiding structure; this arrangement ensures structural stability of the puncture base 72. To facilitate the assembly of the cylindrical seats into the grooved inclined rails 71, guide openings 711 larger than the inclined rail openings are provided at the top of the lower structure 2; the guide opening 711 is a triangular opening, see fig. 5, 8, and 9.

Or the inclined rails are slope-shaped inclined rails arranged on the left side wall and the right side wall of the lower structure 2; the motion track of the slope type inclined track is an inclined plane of the slope type track; an inosculation surface which is attached to the slope type inclined track slope profile surface is arranged on the puncture needle 3 seat 31, the inosculation surface is arranged on a main base of the puncture needle 3 seat 31, and a needle seat 31 with the puncture needle 3 is arranged above the main base.

Example 4

Under the embodiment 1, another embodiment under the concept is that a connecting rod structure connected with the puncture structure is arranged, the connecting rod structure comprises at least one main connecting rod 91 obliquely connected with the puncture structure, and one end of the main connecting rod 91 is rotatably connected with the side wall of the lower structure 2; the other end is rotatably connected with the puncturing structure. When the upper structure 1 and the lower structure 2 vertically move relatively to each other, the main link 91 drives the puncture needle 3 to puncture the capsule in the capsule bin 111 along the puncture channel 12, as shown in fig. 14-19. The master link 91 is one structure with the master link 91 interconnecting the links.

The inclination direction of the main link 91 is a direction inclined from the upper edge position of the lower structure 2 to the upper part and toward the capsule chamber 111. In this way, the horizontal distance of the main link 91 can be changed during the upward movement of the lower structure 2, and the piercing base 72 can perform piercing movement toward the capsule chamber 111 when the lower structure 2 moves upward relatively, as shown in fig. 15 and 16.

The puncture channel 12 is in a horizontal direction or an upward inclined direction or a downward inclined direction; taking the horizontal direction of the puncture channel 12 as an example, the relationship between the inclination angle a of the main link 91, the length L1 of the main link 91, the puncture distance L2 of the puncture needle 3, and the longitudinal vertical movement distance L3 of the upper structure 1 and the lower structure 2 is: l1> L2+ L3/cota. The setting can determine the residual indexes after determining any 3 indexes according to the requirement. The puncturing structure includes the lancet 3 provided with the connecting rod connecting portion 94 or the needle holder 31 with the lancet 3. Wherein the preferred piercing structure is a lancet 3 provided with a connecting rod connection 94. The lancet 3 is contained within the puncture channel 12 at any time, and this arrangement ensures that the lancet 3 moves the lancing structure according to the puncture channel 12, see fig. 15 and 16.

A direction maintaining structure for ensuring the main connecting rod 91 to move in a plane is arranged, and one embodiment of the direction maintaining structure is that a running cavity 921 with the same thickness or diameter as the main connecting rod 91 is arranged; the travel channel 921 is formed by two plate-shaped structures 922 protruding laterally from the lower structure 2. The direction maintaining structure may also be two maintaining links 93 connected to the upper structure 1, the two maintaining links 93 being disposed on both sides of the puncture channel 12; one end of a connecting rod above the maintaining connecting rod 93 is rotatably connected with the side wall of the upper structure 1, and the other end is movably connected with the puncture needle 3 or the puncture needle 3 base; the maintaining link 93 is symmetrically disposed around the puncture channel 12. The holding link 93 and the main link 91 are also provided as a separation preventing structure.

Example 5

The following embodiments are added on the basis of examples 1-5:

the bottommost part of the upper structure 1 and the bottom surface of the lower structure 2 are correspondingly provided with mutually sleeved pipe cavity structures, namely an upper pipe cavity 41 at the bottommost part of the upper structure 1 and a lower pipe cavity 42 extending out of the bottom surface of the upper structure 1; the upper lumen 41 is fitted outside the lower lumen 42 or the upper lumen 41 extends inside the lower lumen 42, and the return spring 4 is disposed at the center of the upper lumen 41 and the lower lumen 42, as shown in fig. 2 and 8.

A direction guide structure is arranged for ensuring and maintaining the longitudinal vertical direction movement of the upper structure 1 and the lower structure 2, and the direction guide structure comprises a direction guide groove 571 or a direction guide column 572 arranged in the middle of the upper structure 1; the device also comprises a direction guide column 572 or a direction guide groove 571 correspondingly arranged in the middle of the lower structure 2; the direction guide groove 571 provided in a different structure is fitted to the direction guide column 572, and the direction of the direction guide groove 571 and the direction guide column 572 is a longitudinal vertical direction. The better implementation mode is as follows: the lower lumen 42 is sleeved in the upper lumen 41; the outer side wall of the upper cavity 41 is provided with a direction guide post, refer to fig. 2, 5 and 9.

Another embodiment of the return spring 4 and the movement in the vertical direction is as follows: a bottom cavity 852 for allowing the bottom structure 851 of the upper structure 1 to move is directly arranged in the lower structure 2, and the bottom structure 851 is matched with the bottom cavity 852 in shape; a return spring 4 is arranged in the bottom cavity 852; the base structure 851 always includes a portion disposed within the base cavity; this arrangement also advantageously provides for guiding the longitudinal vertical movement and the return spring 4. In a more preferred embodiment, the base structure 851 is provided with a secondary adaptive cavity 853; a secondary adapter rod 854 extends into the bottom cavity 852; the secondary adaptive cavity 853 is adaptive to the secondary adaptive rod 854, and the secondary adaptive rod 854 extends into the secondary adaptive cavity 853; and a return spring 4 is disposed within the secondary fitting cavity 853. This way, the guiding and adapting effect of the moving direction can be further enhanced, and the moving stability is ensured, refer to fig. 2 and 15.

The upper structure 1 is also provided with a suction channel section 62 with a medicine suction channel; the suction channel is arranged on the upper structure 1 in a rotating combination or a clamping combination. A cylindrical passage tube 621 is provided on the suction passage section 62. The bottom of the suction channel section 62 is provided with a barrier net arranged to prevent the capsule from being sucked during the suction of the dry powder. A suction nozzle section 63 matched with a suction nozzle is sleeved above the suction channel section 62; an anastomosis tube 631 anastomosed with the cylindrical passage tube 621 is internally provided above the nozzle section 63. This arrangement may increase the degree of fit of the nozzle section 63 to the suction channel section 62. The arc-shaped structures with the same shapes as the finger placing structures 61 are arranged at the bottoms of the suction channel section 62 and the suction nozzle section 63, the arrangement can ensure that the structures are tidy and stable after combination, the hand placing operation is completed through the arc-shaped structures on the suction nozzle section 63, the anti-skid grains 611 are arranged on the arc-shaped structures on the suction nozzle section 63, and the friction force and controllability in the operation process are increased. Above the suction nozzle section 63, a contamination-proof vertical snap-on protective cap 64 and a rotary-opening protective cap 64 are also provided, see fig. 1-4. Through the forefinger, the finger placement structure department is placed to the middle finger, and the below structure bottom is placed to the thumb, accomplishes the relative motion of top structure and below structure through 3 finger cooperations, realizes that the perpendicular mode of motion reaches the side and punctures the purpose of capsule.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.

Claims

1. A dry powder inhalation apparatus with a separation prevention structure comprises an upper structure, a lower structure and a puncture structure; the upper structure moves in a vertical direction relative to the lower structure; the puncturing structure comprises a puncturing needle; the upper structure comprises a capsule bin and a puncture channel outside the capsule bin; the puncture channel provides a puncture track for lateral puncture movement of the puncture needle; a matching structure is arranged among the upper structure, the lower structure and the puncture structure and is used for realizing the relative motion of the upper structure and the lower structure in the longitudinal vertical direction and simultaneously driving the puncture needle to puncture the capsule in the capsule bin along the puncture channel; a suction nozzle is arranged above the upper structure;

the anti-separation structure is arranged to ensure vertical movement and prevent the upper structure from being separated from the lower structure after the upper structure and the lower structure are combined.

2. The inhalation apparatus of claim 1, wherein the separation prevention structure comprises a stopper rod protruding below the upper structure; the lowest part of the limiting rod is provided with a locking bulge; the length of the limiting rod is not less than the longitudinal vertical movement distance between the upper structure and the lower structure; the lower structure is provided with a limit protrusion matched with the locking protrusion.

3. The inhalation apparatus of claim 2, wherein the length of the stopper from the deadlocking projection to the lowermost end of the upper structure is equal to the longitudinal vertical movement distance between the upper structure and the lower structure.

4. The inhalation device of claim 1, wherein the stop projection is a projection extending from a side wall of the underlying structure,

or the lower structure is provided with a moving groove for the locking protrusion to move, and the limiting protrusion is a top body arranged at the top of the moving groove from the bottom of the moving groove to the side wall of the lower structure.

5. The inhalation apparatus of claim 1, wherein the length of the movement slot is equal to the length of the stopper rod.

6. The inhalation device according to claim 4, wherein a guide groove is provided above the movement groove, the direction and width of the guide groove completely correspond to those of the movement groove, the lower end point of the guide groove is the uppermost limit protrusion, and a guide surface is provided on the uppermost limit protrusion.

7. The inhalation device according to claim 1, wherein at least 1 pair of the stopper rods and the corresponding motion grooves are symmetrically provided on the left and right side walls or the front and rear side walls; optionally, 2 pairs of limiting rods and corresponding motion grooves are symmetrically arranged on the left side wall, the right side wall or the front side wall and the rear side wall around the capsule bin.

8. The inhalation apparatus according to claim 1, wherein the separation prevention structure comprises connection structures which interconnect without affecting the longitudinal vertical direction movement, the connection structures being interconnecting links; the interconnecting connecting rod is provided with connecting parts with the upper structure and the lower structure.

9. The inhalation apparatus according to claim 8, wherein the interconnecting links are 4 diamond-shaped links with free ends on both sides and interconnecting upper and lower structures on the upper and lower sides, respectively;

or the interconnecting connecting rod at least comprises a main connecting rod connected with the side edge of the lower structure, the other end of the main connecting rod is connected with the puncture structure, and the puncture structure always comprises a puncture needle part in the puncture channel; the master link moves in one plane.

10. The inhalation apparatus according to claim 1, wherein a return structure of the locking protrusion contacting the limiting protrusion in the unused state is provided at the bottom of the upper structure and the lower structure, and the return structure is a return spring.