Cream administration device suitable for deep part of external auditory canal

Abstract

The utility model relates to the technical field of dosing devices, in particular to a cream dosing device suitable for the deep part of an external auditory canal. The push tube structure comprises an outer tube, a push rod and a soft column, and the push rod drives the soft column to stretch out and draw back; the limiting stopper comprises a notched threaded sleeve, a blocking disc and a locking nut, the notched threaded sleeve is sleeved with the locking nut, the locking nut rotates forwards to enable the notched threaded sleeve to contract inwards, and then the limiting stopper is positioned on the outer pipe; ointment is filled in the drug delivery hose, a drug outlet is formed in the wall face of the drug delivery hose, and the soft column penetrates into the drug delivery hose to extrude out the ointment from the drug outlet. By arranging the position-adjustable limiter, insertion and extension of the administration hose can be adjusted according to the body shape of a user, it is guaranteed that ointment medicine is effectively smeared to the deep position of the external auditory canal, and the treatment effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of drug delivery devices, in particular to a cream delivery device suitable for the deep part of the external auditory canal. Background Art

[0002] Fungal otitis externa is a common ear disease that typically requires treatment with antifungal cream. Existing methods typically involve applying the cream with a cotton swab, which is then inserted into the external auditory canal. However, due to the deep ear canal, self-applying the cream often makes it difficult for patients to reach deep into the ear canal, resulting in poor treatment effectiveness. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a cream delivery device suitable for the deep part of the external auditory canal, which is convenient to use, highly reliable and comfortable.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a cream delivery device suitable for deep external auditory canal, comprising:

[0005] The push tube structure includes an outer tube, a push rod, and a flexible column. The outer tube includes an inlet end and an outlet end. The push rod penetrates into the outer tube from the inlet end and can move along the length direction of the outer tube. The flexible column is arranged at the front end of the push rod and is driven by the push rod to extend and retract from the outlet end of the outer tube.

[0006] The limiter includes a cut screw sleeve, a blocking plate, and a locking nut. The cut screw sleeve is sleeved on the outside of the outer tube. The blocking plate is connected to the front section of the cut screw sleeve. The outer diameter of the cut screw sleeve gradually increases from the rear end to the front end. The outer wall of the cut screw sleeve is provided with an external thread. The cut screw sleeve is provided with a cut portion. The cut portion extends from the rear end to the front and penetrates inside and outside. The inner wall of the locking nut is provided with an internal thread. The locking nut is sleeved on the outside of the cut screw sleeve. The locking nut is rotated forward to cause the cut screw sleeve to contract inward, thereby positioning the limiter on the outer tube.

[0007] A drug delivery hose, the front end of which is closed and has a spherical structure, and the rear end is connected to the outlet end of the outer tube. The drug delivery hose is filled with ointment, and the wall of the drug delivery hose is provided with a plurality of drug outlets which penetrate inside and outside. The ointment is squeezed out from the drug outlet through a soft column which penetrates into the drug delivery hose.

[0008] Furthermore, the blocking plate includes a support ring and a soft rubber pad. The support ring is connected to one end of the cut screw sleeve, and the support ring and the cut screw sleeve are arranged vertically. The soft rubber pad is arranged on the front side of the support ring, and the soft rubber pad has a conical ring structure with a high inside and a low outside.

[0009] Furthermore, there are a plurality of the cutout portions, and the cutout portions are arranged in a circular array around the axis of the cutout screw sleeve.

[0010] Furthermore, a plurality of outwardly extending protruding handles are provided on the outer wall of the locking nut, and the protruding handles are arranged in a circular array around the axis of the locking nut.

[0011] Furthermore, the outer wall of the outer tube is provided with a scale texture arranged along the length direction, and the scale texture is used to provide a position indication reference for the limiter.

[0012] Furthermore, the outlet end of the outer tube is provided with an insertion portion extending forward, the outer wall of the insertion portion is provided with an external thread, the inner wall of the rear end of the drug delivery hose is provided with an internal thread, and the insertion portion is inserted into the rear end of the drug delivery hose and connected through a threaded structure.

[0013] Furthermore, a first operating disc is provided at the inlet end of the outer tube, and a second operating disc is provided at the rear end of the push rod.

[0014] Furthermore, it also includes a medicine storage shell, which is used to store the drug delivery hose. The inner wall of the medicine storage shell is adapted to the outer wall of the drug delivery hose. When the drug delivery hose is in the medicine storage shell, the outer wall of the drug delivery hose is in contact with the inner wall of the medicine storage shell. The medicine storage shell is provided with an open end, and a closing membrane is provided at the open end. The closing membrane closes the inside of the medicine storage shell.

[0015] Furthermore, the open end is provided with an extension edge, the closing film is an aluminum foil film, the aluminum foil film is attached to the extension edge, and the aluminum foil film has an easy-to-tear portion extending out of the extension edge.

[0016] From the above description of the present invention, it can be seen that compared with the prior art, the present invention provides a cream delivery device suitable for deep external auditory canal, which has the following advantages:

[0017] 1. By setting an adjustable position limiter, the insertion of the drug delivery hose can be adjusted according to the user's body shape, ensuring that the ointment medicine is effectively applied to the deep position of the external auditory canal and ensuring the treatment effect.

[0018] 2. The outer tube is provided with scale texture for user reference, the insertion depth can be quantified and visualized, and it is easy to use.

[0019] 3. The drug delivery hose and soft column are made of soft materials, which will adaptively deform during the insertion process and will not damage the user's external auditory canal, with high reliability and comfort.

[0020] 4. The drug delivery hose and the drug delivery device body adopt a detachable connection structure. The drug delivery hose can be replaced each time the drug is delivered, and the drug delivery device body structure can be used multiple times, which reduces the cost of consumables during the treatment process.

[0021] 5. Unused drug delivery hoses are sealed and stored in the medicine storage box to ensure that the medicine is not contaminated.

[0022] 6. The outer wall of the drug delivery hose is fitted with the inner wall of the drug storage shell, so that the drug outlet is in a closed state. Therefore, the ointment drug only needs to be injected into the drug hose, which is convenient for filling the ointment drug and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of a cream drug delivery device suitable for deep external auditory canal in use.

[0024] Figure 2 The utility model is a schematic structural diagram of a cream drug delivery device suitable for the deep part of the external auditory canal.

[0025] Figure 3 This is a schematic diagram of an exploded view of a cream medication delivery device suitable for deep external auditory canal according to the present invention.

[0026] Figure 4 The utility model is a cross-sectional schematic diagram of a cream drug delivery device suitable for the deep part of the external auditory canal.

[0027] Figure 5 This is a schematic diagram of the structure of the limiter of the utility model.

[0028] Figure 6 This is a structural diagram of the utility model in which the drug delivery hose is placed in the drug storage shell.

[0029] Figure 7 For this utility model Figure 6 Schematic diagram of the corresponding decomposition state.

[0030] The symbols in the figure correspond to the following: 1. Push tube structure; 11. Outer tube; 111. Inlet end; 112. Outlet end; 113. First operating disk; 114. Scale texture; 115. Insertion part; 12. Push rod; 121. Second operating disk; 13. Soft column; 2. Limiter; 21. Cutting screw sleeve; 211. Cutting part; 22. Blocking disk; 221. Support ring; 222. Soft rubber pad; 23. Locking nut; 231. Protruding handle; 3. Dosing hose; 31. Drug outlet; 4. Drug storage shell; 41. Open end; 42. Expansion edge; 43. Closing membrane; 431. Easy-to-tear part. DETAILED DESCRIPTION

[0031] The present invention is further described below through specific implementation methods.

[0032] Reference Figures 1 to 5 As shown, a cream delivery device suitable for deep external auditory canal includes a push tube structure 1, a limiter 2, a delivery hose 3, and a drug storage shell 4.

[0033] The push tube structure 1 includes an outer tube 11, a push rod 12, and a flexible column 13. The outer tube 11 includes an inlet end 111 and an outlet end 112. The push rod 12 penetrates the outer tube 11 from the inlet end 111 and can move along the length of the outer tube 11. The flexible column 13 is located at the front end of the push rod 12 and is driven by the push rod 12 to extend and retract from the outlet end 112 of the outer tube 11. The inlet end 111 of the outer tube 11 is provided with a first operating plate 113, and the rear end of the push rod 12 is provided with a second operating plate 121. The outer wall of the outer tube 11 is provided with a scale texture 114 arranged along the length. The outlet end 112 of the outer tube 11 is provided with an insertion portion 115 extending forward, and the outer wall of the insertion portion 115 is provided with external threads. The flexible column 13 is made of silicone or rubber, while the outer tube 11 and push rod 12 are made of plastic.

[0034] The stopper 2 includes a cut screw sleeve 21, a blocking disc 22, and a locking nut 23. The cut screw sleeve 21 is sleeved on the outside of the outer tube 11 and is located at the position of the scale texture 114. The scale texture 114 is used to provide a position indication reference for the stopper 2. The blocking disc 22 is connected to the front section of the cut screw sleeve 21. The blocking disc 22 includes a support ring 221 and a soft rubber pad 222. The support ring 221 is connected to one end of the cut screw sleeve 21 and is arranged perpendicular to the cut screw sleeve 21. The soft rubber pad 222 is arranged on the front side of the support ring 221 and has a conical ring structure with a high inner side and a low outer side. The outer diameter of the slit screw sleeve 21 gradually increases from the rear end to the front end, and the outer wall of the slit screw sleeve 21 is provided with an external thread. The slit screw sleeve 21 is provided with a slit portion 211, which extends from the rear end to the front and penetrates inside and outside. There are a plurality of slit portions 211, and each slit portion 211 is arranged in a circular array around the axis of the slit screw sleeve 21. The outer wall of the locking nut 23 is provided with a plurality of outwardly extending protruding handles 231, and each protruding handle 231 is arranged in a circular array around the axis of the locking nut 23. The inner wall of the locking nut 23 is provided with an internal thread. The locking nut 23 is sleeved on the outside of the slit screw sleeve 21. The locking nut 23 is rotated forward to cause the slit screw sleeve 21 to contract inward, thereby positioning the limiter 2 on the outer tube 11.

[0035] The front end of the medication hose 3 is closed and spherical. The inner wall of the rear end of the medication hose 3 is provided with internal threads. The insertion portion 115 of the outer tube 11 is inserted through the rear end of the medication hose 3 and connected via the threaded structure. The medication hose 3 is filled with ointment. The wall of the medication hose 3 is provided with a plurality of drug outlets 31 extending from the inside to the outside. The soft column 13 penetrates the medication hose 3 to squeeze the ointment out of the drug outlet 31. The medication hose 3 is made of silicone or rubber.

[0036] The medicine storage shell 4 is used to store the medicine delivery hose 3. The inner wall of the medicine storage shell 4 is adapted to the outer wall of the medicine delivery hose 3. When the medicine delivery hose 3 is in the medicine storage shell 4, the outer wall of the medicine delivery hose 3 is in contact with the inner wall of the medicine storage shell 4. The medicine storage shell 4 is provided with an open end 41. The open end 41 is provided with an expansion edge 42. A closing film 43 is provided at the open end 41. The closing film 43 is an aluminum foil film. The aluminum foil film is attached to the expansion edge 42 so that the closing film 43 seals the inside of the medicine storage shell 4. The aluminum foil film has an easy-to-tear portion 431 extending out of the expansion edge 42.

[0037] The present application is further described below with reference to a specific usage.

[0038] The drug delivery hose 3 is sealed in the drug storage shell 4 when not in use. When in use, the drug delivery hose 3 is taken out by tearing off the sealing film 43 through the easy-tear portion 431, and the rear end of the drug delivery hose 3 is threadedly connected to the insertion portion 115 of the outer tube 11. The position of the limiter 2 is adjusted according to the user's body shape, that is, the distance from the front end of the drug delivery hose 3 to the blocking disk 22 is adjusted to be slightly shorter than the length of the external auditory canal. The specific length setting is determined by the doctor. The user follows the doctor's advice and makes adjustments with reference to the scale texture 114. After the specific adjustment, the cut screw sleeve 21 is moved to the set position of the outer tube 11, and the locking nut 23 is rotated forward. Due to the tapered outer wall structure of the cut screw sleeve 21, the locking nut 23 is rotated forward to cause the cut screw sleeve 21 to shrink inward and finally clamp the outer tube 11 to complete the positioning of the limiter 2. Reference Figure 1 As shown, the user inserts the medication hose 3 through the ear canal into the external auditory canal until the soft rubber pad 222 contacts the concha cavity. At this point, the end of the medication hose 3 is close to the eardrum and maintains a safe distance from the eardrum. Because the medication hose 3 is relatively soft, it will deform adaptively relative to the external auditory canal structure during insertion, preventing damage to the external auditory canal. By pushing the push rod 12 via the second operating dial 121, the soft column 13 extends from the outlet end 112 and enters the medication hose 3. The ointment filled in the medication hose 3 is squeezed out from the medication outlet 31 and applied to the inner wall of the external auditory canal. The medication hose 3 is removed to complete medication administration in the external auditory canal.

[0039] The ointment in a medication tube 3 is set to a single-use amount. The medication tube 3 is detachable and can be discarded after use. The soft column 13 and other parts can be cleaned and disinfected. The next medication tube 3 can be installed for the next use. The main structure of the medication device can be used multiple times, reducing the cost of consumables during treatment.

[0040] refer to Figure 6 、 Figure 7As shown, the drug delivery hose 3 is enclosed in the drug storage shell 4, ensuring that the drug is not contaminated. The design of the drug storage shell 4 also takes into account the convenience of loading the drug during the production process. The empty drug delivery hose 3 is first placed in the drug storage shell 4. Since the outer wall of the drug delivery hose 3 fits the inner wall of the drug storage shell 4, that is, the drug outlet 31 is in a closed state, the ointment drug only needs to be injected into the drug delivery hose 3. There is no need to worry about the ointment drug leaking from the drug outlet 31 during the filling process. Finally, the open end 41 is closed by the sealing membrane 43 to complete the drug filling. The ointment drug is convenient to load, which reduces production costs.

[0041] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A cream delivery device suitable for deep external auditory canal, characterized in that: include: The push tube structure includes an outer tube, a push rod, and a flexible column. The outer tube includes an inlet end and an outlet end. The push rod penetrates into the outer tube from the inlet end and can move along the length direction of the outer tube. The flexible column is arranged at the front end of the push rod and is driven by the push rod to extend and retract from the outlet end of the outer tube. The limiter includes a cut screw sleeve, a blocking plate, and a locking nut. The cut screw sleeve is sleeved on the outside of the outer tube. The blocking plate is connected to the front section of the cut screw sleeve. The outer diameter of the cut screw sleeve gradually increases from the rear end to the front end. The outer wall of the cut screw sleeve is provided with an external thread. The cut screw sleeve is provided with a cut portion. The cut portion extends from the rear end to the front and penetrates inside and outside. The inner wall of the locking nut is provided with an internal thread. The locking nut is sleeved on the outside of the cut screw sleeve. The locking nut is rotated forward to cause the cut screw sleeve to contract inward, thereby positioning the limiter on the outer tube. A drug delivery hose, the front end of which is closed and has a spherical structure, and the rear end is connected to the outlet end of the outer tube. The drug delivery hose is filled with ointment, and the wall of the drug delivery hose is provided with a plurality of drug outlets which penetrate inside and outside. The ointment is squeezed out from the drug outlet through a soft column which penetrates into the drug delivery hose.

2. A cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: The blocking disk includes a support ring and a soft rubber pad. The support ring is connected to one end of the cut screw sleeve, and the support ring and the cut screw sleeve are arranged vertically. The soft rubber pad is arranged on the front side of the support ring, and the soft rubber pad has a conical ring structure with a high inside and a low outside.

3. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: There are a plurality of the notch portions, and the notch portions are arranged in a circular array around the axis of the notch screw sleeve.

4. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: A plurality of outwardly extending protruding handles are provided on the outer wall of the locking nut, and the protruding handles are arranged in a ring array around the axis of the locking nut.

5. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: The outer wall of the outer tube is provided with a scale texture arranged along the length direction, and the scale texture is used to provide a position indication reference for the limiter.

6. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: The outlet end of the outer tube is provided with an insertion portion extending forward, the outer wall of the insertion portion is provided with an external thread, the inner wall of the rear end of the drug delivery hose is provided with an internal thread, and the insertion portion is inserted into the rear end of the drug delivery hose and connected through a threaded structure.

7. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: The inlet end of the outer tube is provided with a first operating disc, and the rear end of the push rod is provided with a second operating disc.

8. The cream delivery device suitable for deep external auditory canal according to claim 1, characterized in that: It also includes a medicine storage shell, which is used to store a drug delivery hose. The inner wall of the medicine storage shell is adapted to the outer wall of the drug delivery hose. When the drug delivery hose is in the medicine storage shell, the outer wall of the drug delivery hose fits with the inner wall of the medicine storage shell. The medicine storage shell is provided with an open end, and a closing membrane is provided at the open end. The closing membrane closes the inside of the medicine storage shell.

9. The cream delivery device suitable for deep external auditory canal according to claim 8, characterized in that: The open end is provided with an extension edge, and the closing film is an aluminum foil film. The aluminum foil film is attached to the extension edge, and the aluminum foil film has an easy-to-tear portion extending out of the extension edge.

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