Rotary cover type inhaler

Abstract

The rotary cover type inhaler comprises a pricking needle, a box body provided with a capsule bin, a cover body connected with the box body in a pivoted mode and a working piece, the pricking needle is connected with the box body in a sliding mode, and a matching part of the pricking needle is connected with the working piece; the working piece is elliptical, a straight line which is perpendicular to the working piece and passes through the central point of the working piece is a working axis, the cover body is connected with the working piece through a transmission mechanism, and when the cover body rotates relative to the box body, the working piece is driven to rotate around the working axis, so that the long-axis end point and the short-axis end point of the working piece sequentially pass through the matching part; the pricking needle generates linear motion parallel to the rotating end face of the work piece, the pricking needle is switched between the waiting position and the puncturing position, and when the cover body is switched between the opening position and the closing position, the pricking needle reaches the puncturing position from the waiting position and returns to the waiting position, and when the cover body is rotated, the capsule can be punctured, and a patient can use the capsule conveniently.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to a twist-cover inhaler. Background Art

[0002] At present, the capsule-type powder inhaler used in clinical applications includes a shell, a nozzle, a capsule compartment and a puncture needle that can be inserted into the capsule compartment to puncture the capsule. When using, the patient needs to put the drug-containing capsule in the capsule compartment, and then adjust the cover covering the capsule compartment to a closed position so that the capsule compartment is only connected to the air inlet and the nozzle, and then press the button connected to the shell to drive the puncture needle to puncture the capsule, and then the reset structure allows the puncture needle to withdraw from the capsule, and the puncture needle punctures a hole in the capsule shell, and the drug in the capsule can leave the capsule shell through the hole on the capsule, and then the patient can inhale the drug through the nozzle.

[0003] When a patient uses the inhaler, he needs to put the capsule into the capsule chamber, close the capsule chamber, and then use a button to drive the puncture needle to pierce the capsule. The patient needs to perform multiple actions before inhaling the medicine, which is inconvenient to use. Summary of the invention

[0004] In order to simplify the steps for patients to use a dry powder inhaler, the present application provides a twist-cover inhaler.

[0005] A rotary cover inhaler comprises a puncture needle, a box body provided with a capsule compartment, a cover body pivotally connected to the box body, and a working piece, wherein the puncture needle is slidably connected to the box body, and a matching portion of the puncture needle is connected to the working piece; the working piece is elliptical, and a straight line perpendicular to the working piece and passing through the center point of the working piece is the working axis; the cover body is connected to the working piece through a transmission mechanism, and when the cover body rotates relative to the box body, the working piece is driven to rotate around the working axis, so that the major axis end point and the minor axis end point of the working piece pass through the matching portion in sequence, and the puncture needle generates a linear motion parallel to the rotating end face of the working piece, and the puncture needle switches between a waiting position and a puncturing position, and when the cover body switches between an open position and a closed position, the puncture needle reaches the puncturing position from the waiting position and returns to the waiting position.

[0006] When the cover body rotates relative to the box body, the cover body can drive the elliptical working part to rotate around the working axis, so that the puncture needle can switch between the waiting position and the puncture position. After the puncture needle punctures the capsule shell in the capsule compartment, it withdraws from the capsule, and the medicine in the capsule can leave the capsule through the hole on the capsule, and then the patient can inhale the medicine through the suction nozzle.

[0007] Because the working piece is elliptical, it has two major axis endpoints and two minor axis endpoints. When the working piece rotates 360° in one direction around the working axis, the two major axis endpoints and the two minor axis endpoints of the working piece can be connected with the matching part once respectively, and the puncture needle can reach the puncture position from the waiting position, and then return to the waiting position, and then reach the puncture position again, and finally return to the waiting position. The working piece rotates one circle in one direction, and the puncture needle can reach the puncture position twice, thereby ensuring the puncture effect of the puncture needle on the capsule.

[0008] In one embodiment of the present application, the twist-cover inhaler is provided with two puncture needles arranged opposite to each other, and the mating parts of the two puncture needles are respectively connected to the working piece.

[0009] Since the two needles are arranged relative to the capsule chamber and the working piece is elliptical, when the working piece rotates, the two needles can approach or move away from the capsule chamber at the same time. By using one working piece and two needles, the two needles can pierce the capsule at the same time or withdraw from the capsule.

[0010] In one embodiment of the present application, the working piece is annular, and the needle is further connected to the box body through an elastic piece. Under the action of the elastic piece, the matching portion abuts against the inner wall of the working piece.

[0011] In one embodiment of the present application, the working piece is annular, and the needle is further connected to the box body through an elastic piece. Under the action of the elastic piece, the matching portion abuts against the outer wall of the working piece.

[0012] In one embodiment of the present application, the working piece is provided with a guide portion along its extension direction, the matching portion is slidably connected to the guide portion, and the matching portion can move along the extension direction of the working piece.

[0013] In one embodiment of the present application, the movement path of the tip of the needle is parallel to the rotating end surface of the working piece.

[0014] When the movement path of the needle tip is not parallel to the rotating end surface of the working piece, the needle tip relies on the component of the force applied to the needle tip by the working piece to move along its movement path. By making the movement path of the needle tip parallel to the rotating end surface of the working piece, the working piece can directly apply a force to the needle that is colinear with the movement path of the needle tip, thereby making the movement of the needle tip smoother.

[0015] In one embodiment of the present application, the rotating end surface of the cover body is parallel to the rotating end surface of the working piece.

[0016] Since the rotating end face of the cover body is parallel to the rotating end face of the workpiece, compared with the case where the rotating end face of the cover body is not parallel to the rotating end face of the workpiece, such as when the rotating end face of the cover body is perpendicular to the rotating end face of the workpiece, the transmission mechanism can realize the transmission between the cover body and the workpiece without setting a reversing mechanism, thereby simplifying the transmission structure.

[0017] In one embodiment of the present application, the transmission mechanism is a gear set, the cover body, the working piece and the gears in the gear set are meshed, and the rotating end surface of the working piece is parallel to the rotating end surface of the gears in the gear set.

[0018] In one embodiment of the present application, the length direction of the capsule compartment is parallel to the rotating end surface of the working piece.

[0019] In one embodiment of the present application, the length direction of the capsule compartment is perpendicular to the rotating end surface of the working piece.

[0020] The present application has at least the following beneficial effects: 1. When the cover body rotates relative to the box body, the cover body can drive the elliptical working part to rotate around the working axis, so that the puncture needle can switch between the waiting position and the puncture position. After the puncture needle punctures the capsule shell in the capsule compartment, the capsule is withdrawn, and the medicine in the capsule can leave the capsule through the hole on the capsule, and then the patient can inhale the medicine through the suction nozzle.

[0021] 2. Because the working piece is elliptical, it has two major axis endpoints and two minor axis endpoints. When the working piece rotates 360° in one direction around the working axis, the two major axis endpoints and the two minor axis endpoints of the working piece can be connected with the matching part once respectively, and the puncture needle can reach the puncture position from the waiting position, and then return to the waiting position, and then reach the puncture position again, and finally return to the waiting position. The working piece rotates one circle in one direction, and the puncture needle can reach the puncture position twice, thereby ensuring the puncture effect of the puncture needle on the capsule.

[0022] 3. Since the rotating end face of the cover body is parallel to the rotating end face of the workpiece, compared with the case where the rotating end face of the cover body is not parallel to the rotating end face of the workpiece, such as when the rotating end face of the cover body is perpendicular to the rotating end face of the workpiece, the transmission mechanism can realize the transmission between the cover body and the workpiece without setting a reversing mechanism, thereby simplifying the transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an exemplary implementation of the present application; Figure 2 is a structural schematic diagram of an exemplary embodiment of the present application when the cover is in an open position; Figure 3 It is a structural schematic diagram of an exemplary implementation of the working piece in this application; Figure 4 It is a structural schematic diagram of an exemplary implementation mode when the cover body in the present application is in an open position and the matching portion is in contact with the end point of the long axis; Figure 5 It is a structural schematic diagram of an exemplary implementation method when the end point of the short shaft in the present application rotates toward the matching part; Figure 6 It is a structural schematic diagram of an exemplary implementation method when the end point of the short axis in the present application reaches the matching part; Figure 7 is a schematic structural diagram of an exemplary implementation of the first gear in the present application; Figure 8 It is a structural schematic diagram of an exemplary embodiment of the puncture needle in the present application entering the capsule compartment; Fig. 9 It is a structural schematic diagram of an exemplary implementation mode of the present application when the end point of the short axis leaves the matching portion; Fig.10 It is a structural schematic diagram of an exemplary implementation method when the end point of the long axis in the present application reaches the mating part; Fig.11 It is a structural schematic diagram of an exemplary implementation method when the cover body in the present application is in a closed position; Fig.12 is a schematic structural diagram of an exemplary implementation of the air intake duct in the present application; Fig.13 It is a structural schematic diagram of an exemplary implementation method when the matching portion in the present application abuts against the outer wall of the workpiece; Fig.14 is a structural schematic diagram of another exemplary implementation of the matching portion in the present application; Fig.15 It is a structural schematic diagram of another exemplary implementation mode when the matching portion and the working piece in the present application match; Fig.16 It is a structural schematic diagram of an exemplary implementation method when the length direction of the capsule compartment in the present application is perpendicular to the rotating end surface of the working piece; Fig.17 It is a structural schematic diagram of an exemplary implementation of the capsule bin in the present application when the projection of the rotating end surface of the working piece is outside the range of the rotating path of the working piece.

[0024] In the figure: 101, cover body; 102, suction nozzle; 103, first gear; 104, first transmission shaft; 201, working piece; 202, end point of the long axis; 203, end point of the short axis; 204, second gear; 205, needle; 206, matching part; 207, elastic member; 301. Box body; 302. Capsule compartment; 303. Air inlet. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0026] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0027] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0028] See also Figures 1 to 17 Understand this application.

[0029] See also Figure 1 A rotary cover inhaler comprises a lancet 205, a box body 301 provided with a capsule compartment 302, a cover body 101 pivotally connected to the box body 301 and a working piece 201, wherein the cover body 101 can move between an open position and a closed position relative to the box body 301, and the working piece 201 is elliptical.

[0030] The puncture needle 205 is slidably connected to the box body 301, and a hole for the puncture needle 205 to enter and exit is opened on the wall of the capsule compartment 302. The puncture needle 205 can move linearly in one direction to enter the capsule compartment 302, pierce the capsule shell in the capsule compartment 302, and then the puncture needle 205 leaves the capsule compartment 302, so that the medicine in the capsule enters the capsule compartment 302 through the hole on the capsule shell, and the outside gas can enter the capsule compartment 302 through the air inlet 303, and the user can inhale the medicine through the suction nozzle 102.

[0031] The straight line perpendicular to the working piece 201 and passing through the center point of the working piece 201 is the working axis. The working piece 201 is pivotally connected to the box body 301. The working piece 201 can rotate around the working axis. The cover body 101 is connected to the working piece 201 through a transmission mechanism.

[0032] See also Figures 1 to 3The cover body 101 is connected to the working piece 201 through a gear set, the cover body 101 is fixedly connected to the first transmission shaft 104, the first transmission shaft 104 is coaxial with the first gear 103 and fixedly connected, the first gear 103 is meshed with the second gear 204, and the second gear 204 is fixedly connected to the working piece 201. When the cover body 101 rotates relative to the box body 301, the cover body 101 drives the working piece 201 to rotate around the working axis through the gear set.

[0033] Since the workpiece 201 is elliptical, it has a major axis and a minor axis. The length of the minor axis is smaller than that of the minor axis. Therefore, the distance from the minor axis endpoint 203 to the center of the workpiece 201 is smaller than the distance from the major axis endpoint 202 to the center of the workpiece 201.

[0034] The mating portion 206 of the needle 205 is connected to the working piece 201. In one embodiment of the present application, the working piece 201 is annular, and the needle 205 is also connected to the box body 301 through an elastic member 207. The elastic member 207 can be an elastic structure such as a spring or rubber. Under the action of the elastic member 207, the mating portion 206 rests against the inner wall of the working piece 201.

[0035] The following description will be made using an example where the cover 101 moves from the open position to the closed position.

[0036] See also Figure 2 , Figure 4 The projection of the capsule bin 302 on the rotating end face of the working piece is located within the range of the rotating path of the working piece 201. When the cover body 101 is in the open position, the capsule bin 302 is exposed to the outside. At this time, the long axis end point 202 of the working piece 201 is located at the matching portion 206 and is pressed against the inner wall of the working piece 201. The needle 205 is in the waiting position, and the user can put the capsule into the capsule bin 302.

[0037] The user then adjusts the cover 101 from the open position to the closed position. Figure 4 , Figure 5, the cover body 101 drives the working piece 201 to rotate around the working axis, so that the short-axis end point 203 of the working piece 201 moves toward the matching portion 206. Because the distance between the short-axis end point 203 and the capsule chamber 302 is smaller than the distance between the long-axis end point 202 and the capsule chamber 302, the matching portion 206 abuts against the inner wall of the working piece 201, and the length of the needle 205 is constant, when the short-axis end point 203 rotates toward the matching portion 206, the distance between the inner wall of the working piece 201 and the capsule chamber 302 on the movement path of the needle tip is reduced, the elastic member 207 undergoes elastic deformation, and the needle 205 produces a linear motion parallel to the rotating end face of the working piece, so that the working piece 201 pushes the matching portion 206 of the needle 205 to move toward the capsule chamber 302, and the needle tip moves into the capsule chamber 302 until the short-axis end point 203 reaches the matching portion 206, and the distance between the inner wall of the working piece 201 and the capsule chamber 302 on the movement path of the needle tip is the shortest, see Figures 6 to 8 , the needle 205 reaches the piercing position, and the tip of the needle pierces the capsule; thereafter, the user continues to adjust the cover 101 to the closed position, and the short axis end point 203 leaves the matching portion 206, see Fig. 9 , the other long axis end point 202 approaches the matching portion 206, the distance between the inner wall of the working piece 201 and the capsule chamber 302 on the moving path of the needle tip increases, the matching portion 206 abuts against the inner wall of the working piece 201 under the elastic force of the elastic member 207, the matching portion 206 moves away from the capsule chamber 302, and the needle tip gradually withdraws from the capsule until the long axis end point 202 reaches the matching portion 206, see Figures 10 to 12 , the needle tip leaves the capsule, the needle 205 returns to the waiting position, the cover 101 reaches the closed position, the medicine can enter the capsule compartment 302 through the hole on the capsule shell, and the user can use the suction nozzle 102 to inhale the medicine.

[0038] When the cover 101 moves from the closed position to the open position, the movement process of the working member 201 and the needle 205 is similar to the above description process, which will not be repeated here.

[0039] Thus, when the cover 101 is switched between the open position and the closed position, the puncture needle 205 can move from the waiting position to the puncture position and return to the waiting position.

[0040] Technicians in the technical field to which the present application belongs can understand that the needle 205 in the present application is not limited to being in the waiting position only when the long-axis endpoint 202 reaches the matching portion 206. When the matching portion 206 switches from contacting the short-axis endpoint 203 to contacting the section between the long-axis endpoint 202 and the short-axis endpoint 203, the needle 205 can move in a direction away from the capsule compartment 302. In short, when the matching portion 206 is connected to a specific section between the long-axis endpoint 202 and the short-axis endpoint 203, it can also be in the waiting position, so that the tip of the needle 205 can leave the capsule.

[0041] Those skilled in the art of the present application can understand that the connection relationship between the matching portion 206 and the working piece 201 in the present application is not limited to the way that the matching portion 206 abuts against the inner wall of the working piece 201 under the action of the elastic member 207, and can also have other ways. For example, in one embodiment of the present application, the working piece 201 is annular, and the needle 205 is also connected to the box body 301 through the elastic member 207. Under the action of the elastic member 207, the matching portion 206 abuts against the outer wall of the working piece 201, see Fig.13 The projection of the capsule bin 302 on the rotating end face of the working piece is located within the range of the rotating path of the working piece 201. When the long axis end point 202 moves to the matching portion 206, under the action of the working piece 201, the matching portion 206 overcomes the force of the elastic member 207 and moves away from the capsule bin 302, and is in a waiting position; when the short axis end point 203 moves toward the matching portion 206, under the action of the elastic member 207, the matching portion 206 approaches the capsule bin 302 and reaches the piercing position, so that the capsule in the capsule bin 302 can be pierced.

[0042] Alternatively, see Fig.14 , Fig.15 , the projection of the capsule bin 302 on the rotating end face of the working piece is located within the range of the rotating path of the working piece 201. In one embodiment of the present application, the working piece 201 is provided with a guide portion along its extension direction, and the matching portion 206 is slidably connected to the guide portion. When the working piece 201 rotates around the working axis relative to the matching portion 206, the contact position of the matching portion 206 and the working piece 201 changes. Since the working piece 201 is elliptical, the position of the working axis relative to the capsule bin 302 remains unchanged. Under the guidance of the working piece 201, the working piece 201 drives the matching portion 206 to approach or move away from the capsule bin 302, so that the puncture needle 205 switches between the waiting position and the puncture position. There are many ways to achieve the sliding connection between the guide portion and the matching portion 206, such as referring to Fig.14 , Fig.15 The matching part 206 is two cylinders arranged at intervals, the working piece 201 can enter between the two cylinders, and the working piece 201 can rotate relative to the two cylinders, so that the rotation of the working piece 201 can drive the needle 205 to move in a straight line; or the matching part 206 is a cylinder, the guide part is a guide groove, and the matching part 206 is inserted into the guide part, which will not be repeated here.

[0043] In one embodiment of the present application, the movement path of the tip of the needle 205 is parallel to the rotating end surface of the working piece 201, and the needle 205 is inclined relative to the rotating end surface of the working piece 201. When the movement path of the tip of the needle is not parallel to the rotating end surface of the working piece 201, the tip of the needle relies on the component of the force given to the tip of the needle by the working piece 201 to move along its movement path. By making the movement path of the tip of the needle parallel to the rotating end surface of the working piece 201, the working piece 201 can directly give the needle 205 a force that is colinear with the movement path of the tip of the needle, thereby making the movement of the tip of the needle smoother. Preferably, the movement path of the tip of the needle is provided on the rotating end surface of the working piece 201.

[0044] Of course, the movement path of the needle tip can be inclined relative to the rotating end surface of the working piece 201, and the movement of the needle 205 can be decomposed so that the needle tip can produce a linear motion parallel to the rotating end surface and can approach or move away from the capsule compartment 302.

[0045] See also Figure 1 , Figure 3 , Figure 5 In one embodiment of the present application, the rotating end surface of the cover body 101 is parallel to the rotating end surface of the working piece 201.

[0046] Since the rotating end surface of the cover body 101 is parallel to the rotating end surface of the work piece 201, relative to the rotating end surface of the cover body 101 that is not parallel to the rotating end surface of the work piece 201, such as the rotating end surface of the cover body 101 is perpendicular to the rotating end surface of the work piece 201, the transmission mechanism can realize the transmission between the cover body 101 and the work piece 201 without setting a reversing mechanism, thereby simplifying the transmission structure and reducing the space occupied by the transmission mechanism.

[0047] Of course, the rotating end surface of the cover body 101 can also be perpendicular to the rotating end surface of the workpiece 201, but a reversing mechanism such as a worm gear mechanism is required to enable the cover body 101 to drive the workpiece 201 to rotate, which will not be repeated here.

[0048] Furthermore, in one embodiment of the present application, the rotating end face of the cover body 101 is parallel to the rotating end face of the working piece 201, the transmission mechanism is a gear set, the cover body 101 and the working piece 201 are meshed with the gears in the gear set, the rotating end face of the working piece 201 is parallel to the rotating end face of the gear in the gear set, the structure of the transmission mechanism is simple, and the space occupied by the transmission mechanism is reduced.

[0049] Technicians in the technical field to which the present application belongs can understand that the transmission mechanism in the present application is not limited to the gear set method, but can also be a connecting rod mechanism combined with gears, or the cover body 101 drives the working part 201 to move through a belt drive, which will not be repeated here.

[0050] See also Figures 1 to 6 In one embodiment of the present application, the length direction of the capsule bin 302 is parallel to the rotating end face of the working piece 201. When the capsule is placed in the capsule bin 302, the length direction of the capsule is parallel to the length direction of the capsule bin 302, so that the capsule can be placed parallel to the rotating end face of the working piece 201. By setting the position and orientation of the puncture needle 205, the movement path of the tip of the puncture needle 205 is parallel to or perpendicular to the length direction of the capsule bin, and the tip of the puncture needle 205 can puncture the end or side wall of the capsule to meet different usage requirements.

[0051] Of course, there are other ways to set up the capsule compartment, see Fig.16 In one embodiment of the present application, the length direction of the capsule compartment 302 can also be perpendicular to the rotating end surface of the working piece 201. When the puncture needle 205 moves parallel to the rotating end surface of the working piece, the capsule can be punctured to meet different usage requirements.

[0052] See also Figures 1 to 6 In one embodiment of the present application, the rotary cover inhaler is provided with two puncture needles 205 arranged opposite to each other, and the matching parts 206 of the two puncture needles 205 are respectively connected to the working piece 201. The projection of the capsule compartment 302 on the rotating end surface of the working piece is located within the range of the rotating path of the working piece 201 and is located between the two puncture needles 205. Since the elliptical working piece 201 is symmetrical, when the working piece 201 rotates, the two puncture needles 205 can approach or move away from the capsule compartment 302 at the same time. By means of one working piece 201 and two puncture needles 205, the two puncture needles 205 can pierce the capsule at the same time, or withdraw from the capsule, thereby ensuring the stability of the capsule when it is acted upon by the puncture needles 205, and ensuring that the purpose of piercing the capsule is successfully achieved.

[0053] The arrangement of the two needles 205 is not limited to a relative arrangement, but can also be a projection of the two needles 205 in the rotating end surface of the workpiece, and a line connecting the center point of the workpiece 201, which is arranged at an angle. For example, a line connecting one needle 205 and the axis point of the workpiece 201 is a first straight line, and a line connecting the other needle 205 and the axis point of the workpiece 201 is a second straight line, and the angle between the first straight line and the second straight line is 90°, so that the two needles 205 can have different states to achieve different medication purposes.

[0054] Those skilled in the art of the present application can understand that the position of the capsule bin 302 in the present application is not limited to the projection of the capsule bin 302 on the rotating end surface of the workpiece is located within the range of the rotation path of the workpiece 201, but can also be the projection of the capsule bin 302 on the rotating end surface of the workpiece is located outside the range of the rotation path of the workpiece 201, see Fig.17When the long-axis endpoint 202 moves toward the matching portion 206, the distance between the inner wall of the working piece 201 and the capsule chamber 302 on the movement path of the needle tip decreases, and the needle 205 approaches the capsule chamber 302 to reach the piercing position; when the short-axis endpoint 203 moves toward the matching portion 206, the distance between the inner wall of the working piece 201 and the capsule chamber 302 on the movement path of the needle tip increases, and the needle 205 moves away from the capsule chamber 302 to reach the waiting position, so that when the long-axis endpoint 202 reaches the matching portion 206, the needle 205 is in the piercing position, and when the short-axis endpoint 203 reaches the matching portion 206, the needle 205 is in the waiting position, which is different from when the projection of the capsule chamber 302 on the rotating end face of the working piece is within the range of the rotation path of the working piece 201, and will not be repeated here.

[0055] See also Fig.17 When the rotary cover inhaler is provided with two puncture needles 205 arranged opposite to each other, the matching parts 206 of the two puncture needles 205 are respectively connected to the working piece 201, two capsule chambers 302 are provided, and the two capsule chambers 302 are arranged opposite to each other, and the projection of the capsule chamber 302 on the rotating end surface of the working piece is located outside the range of the rotating path of the working piece 201, when the long axis end point 202 moves toward the matching part 206, the two puncture needles 205 can pierce the capsules in the capsule chamber 302 at the same time, and the medicines in the two capsules can be different, so that when the two capsules are pierced at the same time, different medication purposes can be achieved.

[0056] By setting the parameters of the transmission mechanism, the rotation angle of the cover body 101 and the rotation angle of the working piece 201 can be the same or different. For example, when the cover body 101 needs to rotate 180° to switch from the open position to the closed position, the working piece 201 can also rotate 180°, and the needle 205 reaches the piercing position from the waiting position and returns to the waiting position, or the cover body rotates 180° and the working piece 201 rotates 360°. Because the working piece 201 is elliptical, the working piece 201 has two major axis endpoints 202 and two minor axis endpoints 203. When the working piece 201 rotates one circle in one direction around the working axis, the two endpoints of the working piece 201 can be connected with the matching part 206 once respectively, and the needle 205 can reach the piercing position from the waiting position, and then return to the waiting position, and then reach the piercing position again, and finally return to the waiting position. The working piece 201 rotates one circle in one direction, and the needle 205 can reach the piercing position twice, thereby ensuring the piercing effect of the needle 205 on the capsule.

[0057] Those skilled in the art of the present application will understand that the number of the tip of a needle 205 in the present application can be one, see Figure 8 , can be two, see Fig.16 , Fig.17, or there may be multiple ones, and the appropriate needle 205 can be selected according to the use requirements; of course, the needle 205 can be a split structure or an integrated structure, which will not be repeated here.

[0058] Those skilled in the art of the present application will understand that the puncture direction of the tip of the needle 205 in the present application is not limited to puncturing along the axial direction of the capsule. Figure 4 , and can also be punctured along the radial direction of the capsule, see Fig.16 The number of capsule bins 302 is not limited to one, but may be two, three, or even more. For example, when the workpiece 201 is large enough, the projections of the multiple capsule bins 302 on the rotating end faces of the workpiece are located within the range of the rotating path of the workpiece 201, and the needles 205 may be provided with multiple tips that can respectively enter the capsule bins 302; there may also be multiple capsule bins 302, the projections of the rotating end faces of the workpiece are located outside the range of the rotating path of the workpiece 201, and each capsule bin 302 is respectively provided with a needle 205, which will not be repeated here.

[0059] It should be understood that although this specification is described according to various implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0060] The series of detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present application, such as combination, division or repetition of features, should be included in the scope of protection of the present application.

Claims

1. A twist-cover inhaler, characterized in that: It comprises a needle, a box body with a capsule compartment, a cover body pivotally connected to the box body, and a working piece, wherein the needle is slidably connected to the box body, and a matching portion of the needle is connected to the working piece; The working piece is elliptical in shape, and a straight line perpendicular to the working piece and passing through the center point of the working piece is the working axis. The cover body is connected to the working piece through a transmission mechanism. When the cover body rotates relative to the box body, the working piece is driven to rotate around the working axis, so that the major axis end point and the minor axis end point of the working piece pass through the matching part in sequence, and the needle generates a linear motion parallel to the rotating end face of the working piece. The needle switches between the waiting position and the piercing position. When the cover body switches between the open position and the closed position, the needle reaches the piercing position from the waiting position and returns to the waiting position.

2. A twist-cover inhaler according to claim 1, characterized in that: The rotary cover inhaler is provided with two puncture needles arranged opposite to each other, and the matching parts of the two puncture needles are respectively connected with the working piece.

3. A twist-cover inhaler according to claim 1, characterized in that: The working piece is annular, and the needle is also connected to the box body through an elastic piece. Under the action of the elastic piece, the matching portion abuts against the inner wall of the working piece.

4. A twist-cover inhaler according to claim 1, characterized in that: The working piece is annular, and the needle is also connected to the box body through an elastic piece. Under the action of the elastic piece, the matching portion abuts against the outer wall of the working piece.

5. A twist-cover inhaler according to claim 1, characterized in that: The working piece is provided with a guide portion along its extending direction, and the matching portion is slidably connected with the guide portion.

6. A twist-cover inhaler according to claim 1, characterized in that: The moving path of the tip of the needle is parallel to the rotating end surface of the working piece.

7. A twist-cover inhaler according to claim 1, characterized in that: The rotating end surface of the cover body is parallel to the rotating end surface of the working piece.

8. A twist-cover inhaler according to claim 7, characterized in that: The transmission mechanism is a gear set, the cover body, the working piece and the gears in the gear set are meshed, and the rotating end surface of the working piece is parallel to the rotating end surface of the gears in the gear set.

9. A twist-cover inhaler according to claim 1, characterized in that: The length direction of the capsule compartment is parallel to the rotating end surface of the working piece.

10. A twist-cover inhaler according to claim 1, characterized in that: The length direction of the capsule compartment is perpendicular to the rotating end surface of the working piece.

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