Medicine adjusting device and atomizer
By setting up a drug adjustment piece and a regulation chamber in the reservoir of the nebulizer, the problem that existing nebulizers are difficult to control the dosage of medicine liquid is solved, and the precise control of the dosage of medicine liquid and the guarantee of the therapeutic effect is achieved.
Patent Information
- Application Number
- CN202421424214.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-29
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing nebulizer cannot effectively control the dosage of the medicine liquid, which makes it difficult for users to adjust the amount of the medicine liquid by themselves, which may lead to excessive inhalation of the medicine liquid and affect the treatment effect.
A drug adjustment device is designed, including a liquid reservoir and a drug adjustment piece. The liquid reservoir has a storage chamber and a regulation chamber. The drug adjustment piece can be disassembled and arranged in the liquid reservoir. The excess drug liquid in the drug packaging is accommodated through the regulation chamber to ensure that the dosage of the drug liquid flowing into the liquid reservoir meets the needs of the user.
Accurate control of the dosage of the drug liquid is achieved, avoiding excessive inhalation of the drug liquid, ensuring therapeutic effect, and adapting to the needs of different users.
Smart Images
Figure CN222889259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a medicine adjusting device and an atomizer, in particular to a medicine adjusting device and an atomizer capable of controlling the dosage of the medicine. Background Art
[0002] Medical nebulizers are mainly used to administer drugs through the respiratory system. The user pours a certain dose of liquid medicine into the liquid reservoir inside the nebulizer, and the nebulizer atomizes the liquid medicine into tiny particles with a specific particle size, and delivers it through the user's mouth and nose, so that it enters the user's respiratory system through breathing and achieves the purpose of treatment through the circulatory system.
[0003] The liquid reservoir inside the existing nebulizer can hold a fixed volume of liquid medicine, so the nebulizer cannot control the specific liquid medicine dose to be atomized through the liquid reservoir. Furthermore, during the drug packaging process, the liquid medicine in the drug packaging is a fixed dose. When the user pours the liquid medicine in the drug packaging into the nebulizer, the dose of the liquid medicine in the drug packaging may not be equal to the dose required by the user (for example, the dose of the liquid medicine in the drug packaging is 10 ml, but the therapeutic dose required by the user is only 5 ml). Therefore, in this case, it will be difficult for the user to adjust the dose of the liquid medicine poured into the nebulizer by himself.
[0004] On the other hand, during the treatment with a nebulizer, the activated nebulizer will continuously nebulize until the liquid medicine in the reservoir is exhausted. If the liquid medicine dosage required by the user for treatment is lower than the liquid medicine dosage in the drug package, it is difficult for the user to assess when to manually turn off the nebulizer, which may result in inhalation of excessive liquid medicine, thus affecting the treatment effect. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a medicine adjustment device and an atomizer in view of the deficiencies of the prior art.
[0006] In order to solve the above-mentioned technical problems, one of the technical solutions adopted by the utility model is to provide a drug adjustment device, which includes a liquid reservoir and a drug adjustment member. The liquid reservoir includes a first opening and a second opening. The liquid reservoir has a receiving chamber inside, and the first opening is connected to the second opening through the receiving chamber. The drug adjustment member is detachably arranged at the first opening and located in the receiving chamber. The drug adjustment member includes a third opening and an adjustment port. The drug adjustment member has an adjustment chamber inside. The third opening is connected to the adjustment port, and the adjustment port is connected to the second opening.
[0007] Preferably, in the drug adjustment device as described above, the adjustment port is a columnar tube port having a first port and a second port, the first port passes through the bottom of the drug adjustment member, and the second port extends toward the third opening.
[0008] Preferably, in the drug adjustment device as described above, the adjustment chamber is formed between a tube wall of the adjustment port and an outer peripheral wall of the drug adjustment member.
[0009] Preferably, in the drug adjustment device as described above, the drug adjustment member also includes a first outer ring portion and a second outer ring portion, the second outer ring portion is located below the first outer ring portion, the first outer ring portion is arranged around the outer edge of the third opening, and the second outer ring portion is arranged around the outer edge of the adjustment port.
[0010] Preferably, the drug adjustment device as described above further comprises a sealing member, which is arranged around the outer side of the second outer ring portion.
[0011] Preferably, in the drug adjustment device as described above, the first outer ring portion has a first limiting protrusion, the second outer ring portion has a second limiting protrusion, the inner wall of the liquid reservoir includes a limiting groove, and the contour shapes of the first limiting protrusion and the second limiting protrusion correspond to the contour shape of the limiting groove; wherein, when the drug adjustment component is arranged in the accommodating cavity, the first limiting protrusion and the second limiting protrusion are arranged in the limiting groove.
[0012] Preferably, the drug adjustment device as described above further comprises a cover body, which is disposed on the liquid reservoir and covers the first opening of the liquid reservoir and the third opening of the drug adjustment member.
[0013] Preferably, in the drug adjustment device as described above, the cover body further comprises an annular stop wall; wherein, when the cover body is disposed on the liquid reservoir, the stop wall abuts against the adjustment port to block the adjustment port and the adjustment chamber.
[0014] Preferably, the medicine regulating member further comprises a side wall and a bottom wall, the side wall has a first side and a second side opposite to each other, the regulating port is formed on the first side, and the bottom wall is inclined downward from the first side toward the second side.
[0015] Preferably, the regulating chamber is formed by a side wall and a bottom wall.
[0016] Preferably, in the drug adjustment device as described above, the drug adjustment member further comprises a support portion, which is arranged around the outer edge of the third opening, the support portion is clamped on the edge of the first opening, and the position of the adjustment port is opposite to the position of the second opening.
[0017] Preferably, in the drug adjustment device as described above, the supporting portion has a limiting protrusion, the position of the limiting protrusion is opposite to the position of the adjustment port, the inner wall of the liquid reservoir includes a limiting groove, and the contour shape of the limiting protrusion corresponds to the contour shape of the limiting groove; wherein, when the drug adjustment component is arranged in the accommodating cavity, the limiting protrusion is arranged in the limiting groove.
[0018] Preferably, as described above, the drug adjustment device further comprises a cover body, which is disposed on the liquid reservoir and covers the first opening of the liquid reservoir and the third opening of the drug adjustment member.
[0019] Preferably, in the drug adjustment device as described above, the cover body further comprises an annular stop wall; wherein, when the cover body is disposed on the liquid reservoir, the stop wall abuts against the bottom of the liquid reservoir to block the adjustment port and the adjustment chamber.
[0020] In order to solve the above-mentioned technical problems, another technical solution adopted by the utility model is to provide a nebulizer, which includes a drug adjustment device and an atomization module. The drug adjustment device includes a liquid reservoir and a drug adjustment member. The liquid reservoir includes a first opening and a second opening. The liquid reservoir has a receiving chamber inside, and the first opening is connected to the second opening through the receiving chamber. The drug adjustment member is detachably arranged at the first opening and is located in the receiving chamber. The drug adjustment member includes a third opening and an adjustment port. The drug adjustment member has an adjustment chamber inside. The third opening is connected to the adjustment port, and the adjustment port is connected to the second opening. The atomization module is arranged inside the liquid reservoir and is located at the connection position between the second opening and the receiving chamber.
[0021] One of the beneficial effects of the present invention is that the drug adjustment device and the nebulizer provided by the present invention can be equipped with a drug adjustment component inside the liquid reservoir of the drug adjustment device, and the excess drug liquid dosage in the drug package can be accommodated through the adjustment chamber in the drug adjustment component, thereby ensuring that the drug liquid dosage flowing into the liquid reservoir is the drug liquid dosage required by the user.
[0022] In order to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of a drug adjustment device according to the first embodiment of the present invention.
[0024] Figure 2 It is a schematic diagram of an exploded view of a drug adjustment device according to the first embodiment of the present invention.
[0025] Figure 3 It is a schematic diagram of a liquid storage device according to the first embodiment of the present utility model.
[0026] Figure 4 It is a cross-sectional schematic diagram of the liquid storage device and the drug regulating member of the first embodiment of the utility model.
[0027] Figure 5 It is a cross-sectional schematic diagram of the medicine adjustment device according to the first embodiment of the present utility model.
[0028] Figure 6 This is a schematic diagram of an exploded view of a drug adjustment device according to a second embodiment of the present invention.
[0029] Figure 7 It is a cross-sectional schematic diagram of a liquid storage device and a drug regulating member according to a second embodiment of the utility model.
[0030] Figure 8 It is a cross-sectional schematic diagram of a medicine adjustment device according to the second embodiment of the present invention.
[0031] Fig. 9 It is a schematic diagram of the atomizer of the present utility model. DETAILED DESCRIPTION
[0032] The following is an explanation of the implementation of the "drug adjustment device and nebulizer" disclosed in the utility model through specific embodiments. Those skilled in the art can understand the advantages and effects of the utility model from the contents disclosed in this specification. The utility model can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without deviating from the concept of the utility model. In addition, the drawings of the utility model are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the utility model in detail, but the disclosed contents are not intended to limit the scope of protection of the utility model.
[0033] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another element. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.
[0034] First embodiment
[0035] See also Figure 1 and Figure 2 As shown, the first embodiment of the utility model provides a drug adjustment device B that can be used in a nebulizer, which includes a liquid reservoir 1, a drug adjustment member 2 and a cover body 3. The liquid reservoir 1 includes a first opening 11 and a second opening 12. The drug adjustment member 2 is detachably arranged inside the liquid reservoir 1, and the cover body 3 is arranged on the liquid reservoir 1 and covers the first opening 11 of the liquid reservoir 1.
[0036] See also Figures 2 to 4As shown, in detail, the liquid reservoir 1 has an accommodating chamber C1 inside, and the first opening 11 is connected to the second opening 12 through the accommodating chamber C1. The drug regulating member 2 is disposed in the accommodating chamber C1. The drug regulating member 2 includes a third opening 21 and an adjusting port 22, the third opening 21 is connected to the adjusting port 22, and the adjusting port 22 is connected to the second opening 12 of the liquid reservoir 1. When the drug regulating member 2 is disposed inside the liquid reservoir 1, the third opening 21 of the drug regulating member 2 and the first opening 11 of the liquid reservoir 1 overlap with each other, so the cover body 3 is disposed on the liquid reservoir 1 and covers the first opening 11 while also covering the third opening 21. In addition, the drug regulating member 2 has an adjusting chamber C2 inside.
[0037] like Figure 4 As shown, in the first embodiment, the regulating port 22 is a cylindrical tube port having a first port 221 and a second port 222. The first port 221 passes through the bottom of the drug regulating member 2, and the second port 222 extends toward the third opening 21, so that the regulating port 22 has a height relative to the bottom of the drug regulating member 2. In addition, the opening direction of the regulating port 22 is perpendicular to the opening direction of the second opening 12. Further, the regulating chamber C2 is formed between the tube wall R1 of the regulating port 22 and the outer peripheral wall R2 of the drug regulating member 2.
[0038] See also Figure 2 and Figure 3 As shown, the drug regulating member 2 also includes a first outer ring portion 23 and a second outer ring portion 24, the first outer ring portion 23 is arranged around the outer edge of the third opening 21, and the second outer ring portion 24 is located below the first outer ring portion 23 and extends radially outwardly along the regulating port 22 to partially cover the area of the accommodating cavity C1. The second outer ring portion 24 is arranged around the outer edge of the regulating port 22. The first outer ring portion 23 has a first limiting convex portion 231. The second outer ring portion 24 has a second limiting convex portion 241. The inner wall of the liquid reservoir 1 includes a limiting groove 13. The contour shapes of the first limiting convex portion 231 and the second limiting convex portion 241 correspond to the contour shape of the limiting groove 13. When the drug regulating member 2 is arranged in the accommodating cavity C1 of the liquid reservoir 1, the first limiting convex portion 231 and the second limiting convex portion 241 are correspondingly clamped in the limiting groove 13, so that the drug regulating member 2 can be arranged inside the liquid reservoir 1 in a fixed orientation.
[0039] See also Figure 2 , Figure 4 and Figure 5 As shown, the drug adjustment device B also includes a sealing member 4, which is disposed on the outer side of the second outer ring portion 24. When the drug adjustment member 2 is disposed in the accommodating chamber C1, the sealing member 4 is clamped between the second outer ring portion 24 and the inner wall of the liquid reservoir 1. For example, the sealing member 4 can be an elastic sealing ring (O-ring). Alternatively, in other embodiments, the sealing member 4 can also be a convex rib formed integrally with the second outer ring portion 24.
[0040] In addition, if Figure 5 As shown, the cover body 3 also includes an annular stop wall 31. When the cover body 3 is set on the liquid reservoir 1, the stop wall 31 will abut against the edge of the tube wall of the regulating port 22 to close the second port 222. Since the volume of the regulating chamber C2 of the drug regulating member 2 of the liquid reservoir 1 can be determined at the beginning of the design, the designer can first estimate the amount of excess liquid medicine in the drug package based on the liquid medicine dosage of the drug package and the liquid medicine dosage required by the user, and accordingly design the volume of the regulating chamber C2 to be equal to the volume of the excess liquid medicine.
[0041] By this, Figure 5 As shown, the amount of liquid medicine M1 in the accommodating cavity C1 and the regulating port 22 is the expected amount of liquid medicine to be used (i.e., the amount of liquid medicine required by the user), and the amount of liquid medicine M2 in the regulating chamber C2 is the desired amount of liquid medicine to be left (i.e., equal to the excess amount of medicine). When the user pours the liquid medicine in the drug package into the reservoir 1 with the drug regulating member 2 already placed inside, the liquid medicine enters from the third opening 21 and flows into the accommodating cavity C1 through the regulating port 22, and fills the space of the accommodating cavity C1 and the regulating port 22. Furthermore, when the amount of liquid medicine is too much, the excess amount will overflow the regulating port 22 and flow into the regulating chamber C2. Next, the cover body 3 is closed over the third opening 21, so that the stop wall 31 abuts against the edge of the tube wall of the regulating port 22, blocking the regulating port 22 and the regulating chamber C2, so as to prevent the excess liquid medicine in the regulating chamber C2 from seeping into the accommodating chamber C1, or the intended liquid medicine in the accommodating chamber C1 from seeping into the regulating chamber C2 when the atomizer is shaken or tipped. In addition, the setting of the sealing member 4 can further prevent the liquid medicine in the accommodating chamber C1 from leaking out from the boundary of the second outer ring portion 24.
[0042] Also, see Figure 5 and Fig. 9 As shown, the utility model further provides a nebulizer E, which includes a drug adjustment device B, and a nozzle kit B1, a body B2 and an atomization module B3 arranged on the drug adjustment device B. Specifically, the nozzle kit B1 is arranged at the second opening 12 of the liquid reservoir 1, and the liquid reservoir 1 is arranged on the body B2. The atomization module B3 is arranged inside the liquid reservoir 1, at the connection between the second opening 12 and the accommodating chamber C1. Therefore, the intended use of the liquid medicine in the accommodating chamber C1 can be atomized by the atomization module B3 to generate a liquid medicine aerosol, which then enters the respiratory system in the user's body through the user's mouth and nose to achieve the purpose of treatment.
[0043] Second embodiment
[0044] See also Figures 6 to 8As shown, the second embodiment of the utility model provides a drug adjustment device B' that can be used in an atomizer E. The structure of the drug adjustment device B' of the second embodiment is similar to that of the first embodiment, and the similarities such as the structure of the liquid reservoir 1 and the cover body 3 are not repeated here. The difference between the drug adjustment device B' of the second embodiment and the first embodiment is that the structure of the drug adjustment member 2 is different.
[0045] Specifically, in the second embodiment, the drug regulating member 2 includes a third opening 21 and a regulating port 22, and the drug regulating member 2 has a regulating chamber C2 inside, the third opening 21 is connected to the regulating port 22, and the regulating port 22 is connected to the second opening 12. Figure 6 and Figure 7 As shown, the drug regulating member 2 is funnel-shaped, and the drug regulating member 2 further includes a side wall 25 and a bottom wall 26. The side wall 25 has a first side 251 and a second side 252 opposite to each other. The regulating port 22 is formed on the first side 251, and the position of the regulating port 22 is opposite to the position of the second opening 12, that is, the opening direction of the regulating port 22 is parallel to the opening direction of the second opening 12. The bottom wall 26 is inclined downward from the first side 251 toward the second side 252, and together with the side wall 25, forms a regulating chamber C2.
[0046] like Figure 6 As shown, the drug regulating member 2 also includes a support portion 27, which is arranged around the outer edge of the third opening 21. The drug regulating member 2 is detachably arranged at the first opening 11 and is located in the accommodating cavity C1. Further, the support portion 27 is clamped at the edge of the first opening 11 and seals the first opening 11. The support portion 27 has a limiting protrusion 271, and the position of the limiting protrusion 271 is opposite to the position of the regulating port 22. The inner wall of the liquid reservoir 1 includes a limiting groove 13 (see Figure 3 ), the contour shape of the limiting protrusion 271 corresponds to the contour shape of the limiting groove 13. When the drug regulating member 2 is disposed in the accommodating cavity C1 of the liquid reservoir 1, the limiting protrusion 271 is disposed in the limiting groove 13, so that the drug regulating member 2 can be disposed inside the liquid reservoir 1 in a fixed orientation.
[0047] like Figure 8 As shown in the figure, when the cover 3 is set on the liquid reservoir 1, the stop wall 31 of the cover 3 abuts against the bottom of the liquid reservoir 1. Specifically, the stop wall 31 abuts against the upper edge of the side wall 25 of the liquid reservoir 1 to block the regulating port 22 and the regulating chamber C2. When the user pours the liquid medicine in the medicine package into the liquid reservoir 1 with the medicine regulating member 2 placed inside, the liquid medicine ( Figure 8The liquid medicine (not shown) enters from the third opening 21, flows into the accommodating chamber C1 through the regulating port 22, and fills the space in the accommodating chamber C1. At this time, the portion exceeding the dose to be adjusted by the drug adjusting member 2 will overflow the regulating port 22 and flow back into the regulating chamber C2. Next, the cover body 3 covers the third opening 21, so that the stop wall 31 abuts against the side wall 25 and blocks between the regulating port 22 and the regulating chamber C2, so as to prevent the excess liquid medicine in the regulating chamber C2 from seeping into the accommodating chamber C1, or the intended use liquid medicine in the accommodating chamber C1 from seeping into the regulating chamber C2 when the nebulizer is shaken or tipped over.
[0048] Advantageous Effects of Embodiments
[0049] The drug adjustment device B and the nebulizer E provided by the present invention can be provided with a drug adjustment part 2 inside the liquid reservoir 1 of the nebulizer E, and the excess drug liquid dosage in the drug package can be accommodated through the adjustment chamber C2 in the drug adjustment part 2, thereby ensuring that the drug liquid dosage flowing into the liquid reservoir 1 is the drug liquid dosage required by the user. In addition, the drug adjustment device B provided by the present invention can also be blocked between the adjustment port 22 and the adjustment chamber C2 by a stop wall 31, so as to prevent the excess drug liquid in the adjustment chamber C2 from infiltrating into the accommodating chamber C1, or the intended use drug liquid in the accommodating chamber C1 from infiltrating into the adjustment chamber C2 when the nebulizer is shaken or tipped over.
[0050] Furthermore, since the drug adjusting member 2 and the liquid reservoir 1 are detachable components, the drug adjusting device B of the present invention can select a suitable drug adjusting member 2 (for example, Figure 5 or Figure 8 The drug adjusting member 2 in the atomizer can be used to accurately control the dosage of the drug solution to avoid overdose. Furthermore, when the user changes the required drug solution dosage, he only needs to replace the drug adjusting member 2. Therefore, the structure of the atomizer E does not need to be significantly modified due to different drug solution dosages, and can meet the needs of drug packaging of various sizes.
[0051] The contents disclosed above are only preferred feasible embodiments of the present utility model, and are not intended to limit the protection scope of the claims of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the protection scope of the claims of the present utility model.
Claims
1. A drug adjustment device, characterized in that: The drug adjustment device comprises: A liquid reservoir, comprising a first opening and a second opening, wherein the liquid reservoir has a receiving cavity inside, and the first opening is connected to the second opening through the receiving cavity; and A drug regulating member is detachably arranged at the first opening and located in the accommodating cavity. The drug regulating member includes a third opening and an regulating port. The drug regulating member has an regulating chamber inside. The third opening is connected to the regulating port, and the regulating port is connected to the second opening.
2. The drug adjustment device according to claim 1, characterized in that: The regulating port is a columnar tube port having a first port and a second port, wherein the first port passes through the bottom of the drug regulating member, and the second port extends toward the third opening.
3. The drug adjustment device according to claim 2, characterized in that: The regulating chamber is formed between a tube wall of the regulating port and an outer peripheral wall of the drug regulating member.
4. The drug adjustment device according to claim 2, characterized in that: The drug regulating member also includes a first outer ring portion and a second outer ring portion, the second outer ring portion is located below the first outer ring portion, the first outer ring portion is arranged around the outer edge of the third opening, and the second outer ring portion is arranged around the outer edge of the regulating port.
5. The drug adjustment device according to claim 4, characterized in that: The drug adjustment device further includes a sealing member, which is arranged on the outer side of the second outer ring portion.
6. The drug adjustment device according to claim 4, characterized in that: The first outer ring portion has a first limiting protrusion, the second outer ring portion has a second limiting protrusion, the inner wall of the liquid reservoir includes a limiting groove, and the contour shapes of the first limiting protrusion and the second limiting protrusion correspond to the contour shape of the limiting groove; wherein, when the drug regulating component is arranged in the accommodating cavity, the first limiting protrusion and the second limiting protrusion are arranged in the limiting groove.
7. The drug adjustment device according to claim 2, characterized in that: The drug adjustment device further includes a cover body, which is disposed on the liquid reservoir and covers the first opening of the liquid reservoir and the third opening of the drug adjustment member.
8. The drug adjustment device according to claim 7, characterized in that: The cover body also includes an annular stop wall; wherein, when the cover body is disposed on the liquid reservoir, the stop wall abuts against the regulating port to block the regulating port and the regulating chamber.
9. The drug adjustment device according to claim 1, characterized in that: The medicine regulating member further includes a side wall and a bottom wall, the side wall has a first side and a second side opposite to each other, the regulating port is formed on the first side, and the bottom wall is inclined downward from the first side toward the second side.
10. The drug adjustment device according to claim 9, characterized in that: The regulating chamber is formed by the side wall and the bottom wall.
11. The drug adjustment device according to claim 9, characterized in that: The medicine adjusting member further comprises a supporting portion, which is arranged around the outer edge of the third opening. The supporting portion is clamped on the edge of the first opening, and the position of the adjusting port is opposite to the position of the second opening.
12. The drug adjustment device according to claim 11, characterized in that: The supporting portion has a limiting protrusion, the position of the limiting protrusion is opposite to the position of the adjusting port, the inner wall of the liquid reservoir includes a limiting groove, the contour shape of the limiting protrusion corresponds to the contour shape of the limiting groove; wherein, when the drug adjusting component is arranged in the accommodating cavity, the limiting protrusion is arranged in the limiting groove.
13. The drug adjustment device according to claim 9, characterized in that: The drug adjustment device further includes a cover body, which is disposed on the liquid reservoir and covers the first opening of the liquid reservoir and the third opening of the drug adjustment member.
14. The drug adjustment device according to claim 13, characterized in that: The cover body also includes an annular stop wall; wherein, when the cover body is disposed on the liquid reservoir, the stop wall abuts against the bottom of the liquid reservoir to block the regulating port and the regulating chamber.
15. An atomizer, characterized in that: The atomizer comprises: A drug dispensing device according to any one of claims 1 to 14; and An atomization module is disposed inside the liquid reservoir and located at the connection between the second opening and the accommodating cavity.