Anti-overflow medical ointment tube

Abstract

The invention belongs to the technical field of medicine packaging, and particularly relates to an anti-overflow medical ointment tube which comprises a hard tube body, an ointment outlet nozzle communicated with the interior of the hard tube body is arranged on the hard tube body, a piston is axially and slidably connected to the interior of the hard tube body, and the piston divides the internal space of the hard tube body into a medicine storage cavity and a blank cavity. A piston rod is rotationally connected to the piston, a threaded section is arranged on the piston rod, a threaded through hole in threaded fit with the threaded section is formed in the side wall of the blank cavity, and a first flitch is arranged at the end of the piston rod; a first channel is formed in the piston, a second channel communicated with the first channel is formed in the piston rod, a stopping column is arranged in the second channel, a second flitch plate is arranged at the end of the stopping column, and a magnet and a magnetic attraction piece are arranged between the second flitch plate and the first flitch plate; the piston is provided with a sealing film used for sealing the first channel, and the sealing film has the allowance extending into the first channel. The device can prevent the ointment from being squeezed out excessively, prevents the ointment from being sprayed out, and achieves the anti-overflow purpose.

Description

Technical Field

[0001] The invention belongs to the technical field of medicine packaging, and in particular relates to an anti-overflow medical ointment tube. Background Art

[0002] Ointment is a semi-solid drug preparation containing lipid or oily substances (such as vaseline, lanolin) as a matrix for skin. The ointment is generally contained in an ointment tube. Most of the existing ointment tubes are soft tubes. When using, the ointment tube can be squeezed to make the ointment in the tube overflow through the ointment outlet.

[0003] At present, when users squeeze the ointment tube, it is easy to squeeze out too much ointment, and the ointment may overflow if they are not careful. In addition, when the altitude changes and the pressure inside the tube is greater than the pressure outside the tube, the ointment will spray out at the moment of opening, resulting in ointment waste and even soiling the user's clothes. In addition, sometimes the overflowed ointment will adhere to the outer wall of the ointment outlet and then be transferred to the tube cover (the tube cover is used to close the ointment outlet), causing the tube cover to become "dirty", affecting the user's experience. Summary of the invention

[0004] The present invention aims to provide an anti-overflow medical ointment tube to solve the problem that the existing ointment tube is prone to squeeze out excessive ointment, resulting in ointment waste.

[0005] In order to achieve the above-mentioned purpose, the scheme of the present invention is as follows: an anti-overflow medical ointment tube, comprising a hard tube body, a paste outlet nozzle connected to the inside of the hard tube body is provided on the hard tube body, a piston is axially slidably connected to the inside of the hard tube body, the piston divides the internal space of the hard tube body into an independent medicine storage cavity and a blank cavity, a piston rod is rotatably connected to a side wall of the piston facing the blank cavity, a threaded section is provided on the piston rod, a threaded through hole matching the threaded section is provided on a side wall of the blank cavity away from the piston, and a first sticking plate is provided on the end of the piston rod away from the piston; a piston is provided inside the piston. A first channel, a second channel connected to the first channel is provided in the piston rod, the second channel and the first channel are coaxial, a resist column is provided in the second channel, one end of the resist column facing the medicine storage chamber is located in the first channel, and a second plate is provided at the end of the resist column away from the medicine storage chamber, a magnet is fixedly connected to a side wall of the second plate facing the first plate, and a magnetic attraction part that can be magnetically attracted to the magnet is fixedly connected to a side wall of the first plate facing the second plate; a sealing film for sealing the first channel is provided on a side wall of the piston facing the medicine storage chamber, and the sealing film has a margin extending into the first channel.

[0006] The working principle and beneficial effects of this solution are as follows: in this solution, since the threaded section on the piston rod is threadedly connected to the threaded through hole on the side wall of the blank cavity, the piston rod can be rotated to drive the piston to slide in the hard tube body, thereby squeezing the ointment in the medicine storage cavity, so that the ointment overflows from the ointment outlet for use by the user. In this way, this solution can push the ointment to overflow by slowly rotating the piston rod, thereby avoiding squeezing out excessive ointment and avoiding ointment waste. Moreover, after the ointment is squeezed out, the piston rod is rotated in the opposite direction to form a negative pressure in the medicine storage cavity, so that the ointment in the ointment outlet flows back, avoiding the ointment from overflowing when not needed, thereby achieving the purpose of preventing overflow.

[0007] Moreover, when the internal pressure of the medicine storage cavity (containing air) is greater than the external environmental pressure (from low altitude to high altitude), the ointment in the medicine storage cavity can push the resistance column to overcome the magnetic adsorption force between the magnet and the magnetic suction part and slide, so that the ointment in the medicine storage cavity can enter the first channel, thereby balancing the air pressure in the medicine storage cavity and avoiding the ointment from spraying out when the ointment outlet nozzle is opened, thereby avoiding the waste of ointment and the ointment staining clothes.

[0008] Optionally, a clamping column is provided on a side wall of the second mounting plate facing the first mounting plate, and a clamping hole for the clamping column to be clamped into is opened on a side wall of the first mounting plate facing the second mounting plate.

[0009] In this solution, the clamping column is clamped into the clamping hole to prevent the second plate from rotating relative to the first plate, so that the user can rotate the piston rod through the second plate.

[0010] Optionally, a sphere is provided at the end of the paste outlet nozzle away from the hard tube body, a first paste outlet channel is opened in the paste outlet nozzle, and a second paste outlet channel connected to the first paste outlet channel is opened in the sphere; a connecting tube is provided at the end of the hard paste tube away from the first patch plate, the connecting tube is threadedly connected to a tube cover, and a rubber layer is fixedly connected to the side wall of the tube cover facing the sphere.

[0011] In this solution, the tube cover is threadedly connected to the connecting tube, and the rubber layer on the tube cover is used to seal the second ointment outlet channel on the sphere, thereby achieving the purpose of tightness. In addition, the sphere can apply the overflowed ointment to the affected area, avoiding the user from wiping it with a cotton swab or fingers.

[0012] Optionally, the outer diameter of the tube cover is less than or equal to the outer diameter of the hard tube body.

[0013] In this solution, when the outer diameter of the tube cover is smaller than or equal to the outer diameter of the hard tube body, it is easier for the user to open the tube cover and the appearance is better.

[0014] Optionally, the hard tube body is made of a transparent material and is provided with scale lines.

[0015] In this solution, the user can observe the position of the piston through the scale lines to grasp the amount of ointment squeezed out.

[0016] Optionally, a light-shielding coating is coated on the outer wall of the hard tube body, and the light-shielding coating does not cover the scale lines.

[0017] In this solution, the light-shielding coating is used to block most of the light, so that the ointment in the drug storage cavity is stored away from light.

[0018] Optionally, a mounting block is integrally formed on a side wall of the blank cavity away from the piston, and the threaded through hole is provided on the mounting block.

[0019] In this solution, the threaded through hole is arranged on the mounting block, and the thickness of the mounting block is thicker than the side wall of the blank cavity, thereby preventing the side wall of the blank cavity from being too thick as a whole.

[0020] Optionally, a side wall of the blank cavity away from the piston is threadedly connected to the circumferential wall of the blank cavity.

[0021] In this solution, a side wall of the blank cavity away from the piston can be removed, so that the piston can be taken out and the ointment can be added to the interior of the hard tube body, which is convenient and simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of an anti-overflow medical ointment tube in Embodiment 1 of the present invention;

[0023] Figure 2 This is an axial cross-sectional view of an anti-overflow medical ointment tube in Embodiment 1 of the present invention;

[0024] Figure 3 It is an axial cross-sectional view of the anti-overflow medical ointment tube after the ointment pushes the resisting post to slide rightward in the first embodiment of the present invention;

[0025] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0026] Figure 5 This is an axial cross-sectional view of an anti-overflow medical ointment tube in Embodiment 2 of the present invention;

[0027] Figure 6 It is an axial cross-sectional view of the anti-overflow medical ointment tube after the ointment pushes the resisting post to slide rightward in the second embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The marks in the drawings of the specification include: hard tube body 1, scale line 2, paste outlet nozzle 3, first paste outlet channel 301, sphere 4, second paste outlet channel 401, connecting tube 5, tube cover 6, rubber layer 7, piston 8, first channel 801, medicine storage chamber 9, blank chamber 10, piston rod 11, threaded section 111, second channel 1101, bearing 12, mounting block 13, first plate 14, annular plate 15, sealing film 16, resisting column 17, second plate 18, magnet 19, magnetic attraction part 20, clamping column 21, clamping hole 22.

[0030] Embodiment 1

[0031] This embodiment is basically Figure 1 , Figure 2 and Figure 3 As shown: an anti-overflow medical ointment tube, comprising a hard tube body 1, the hard tube body 1 is made of a transparent material, in this embodiment, the hard tube body 1 is made of plastic; the hard tube body 1 is provided with scale lines 2, and the outer wall of the hard tube body 1 is coated with a light-shielding coating, which does not cover the scale lines 2, so that the user can observe the position of the piston 8 inside the hard tube body 1. A paste outlet nozzle 3 is integrally formed on the left side wall of the hard tube body 1, and a first paste outlet channel 301 is opened in the paste outlet nozzle 3, and the first paste outlet channel 301 is connected to the inside of the hard tube body 1, and a sphere 4 is integrally formed at the left end of the paste outlet nozzle 3, and a second paste outlet channel 401 connected to the first paste outlet channel 301 is opened in the sphere 4; a connecting tube 5 is integrally formed at the left end of the hard tube body 1, and the connecting tube 5 is threadedly connected to a tube cover 6, and a rubber layer 7 is bonded to the inner flat wall of the tube cover 6, and the rubber layer 7 is used to seal the left end of the second paste outlet channel 401, so as to prevent the ointment from overflowing when not in use. The outer diameter of the tube cover 6 is smaller than or equal to the outer diameter of the hard tube body 1 . In this embodiment, the outer diameter of the tube cover 6 is smaller than the outer diameter of the hard tube body 1 .

[0032] A piston 8 is axially slidably connected in the hard tube body 1. The piston 8 divides the internal space of the hard tube body 1 into an independent medicine storage chamber 9 and a blank chamber 10. A piston rod 11 is rotatably connected to the right side wall of the piston 8. In this embodiment, the left end of the piston rod 11 is rotatably connected to the right side wall of the piston 8 through a bearing 12. A threaded section 111 is provided on the piston rod 11. A mounting block 13 is integrally formed on the right side wall of the blank chamber 10. A threaded through hole that is threadedly matched with the threaded section 111 is provided on the mounting block 13. A first pasting plate 14 is integrally formed on the right end of the piston rod 11. In addition, the right side wall of the blank chamber 10 is threadedly connected to the circumferential outer wall of the blank chamber 10. Specifically, the right side wall of the blank chamber 10 is separated from the circumferential wall of the blank chamber 10. An annular plate 15 is integrally formed on the right side wall of the blank chamber 10. The inner circumferential wall of the annular plate 15 is threadedly connected to the circumferential outer wall of the blank chamber 10 so that the piston 8 can be taken out and the ointment can be added to the medicine storage chamber 9.

[0033] Combination Figure 4As shown, a first channel 801 is provided in the piston 8, a second channel 1101 communicating with the first channel 801 is provided in the piston rod 11, the second channel 1101 is coaxial with the first channel 801, and the first channel 801 and the second channel 1101 communicate with the medicine storage chamber 9 and the outside atmosphere. A sealing film 16 for sealing the left end of the first channel 801 is bonded to the left side wall of the piston 8, and the sealing film 16 has a margin extending into the first channel 801. In this embodiment, the sealing film 16 is a plastic film with good wear resistance. A resisting column 17 is horizontally slidably connected in the second channel 1101, and the left end of the resisting column 17 is flush with the left end of the first channel 801 or the distance between the left end of the resisting column 17 and the left end of the first channel 801 is less than 5 mm. In this embodiment, the distance between the left end of the resisting column 17 and the left end of the first channel 801 is 5 mm, and the outer diameter of the resisting column 17 is equal to the aperture of the first channel 801; the right end of the resisting column 17 is integrally formed with a second plate 18, and a magnet 19 is bonded to the left side wall of the second plate 18, and a magnetic attraction part 20 that can be magnetically attracted to the magnet 19 is bonded to the right side wall of the first plate 14. In this embodiment, the magnet 19 is a magnet, the magnetic attraction part 20 is an iron sheet, and the magnetic attraction force between the magnet 19 and the magnetic attraction part 20 is weak, which is used to prevent the second plate 18 from automatically separating from the first plate 14. In addition, in this embodiment, in order to prevent the magnet 19 and the magnetic member 20 from occupying a wider space, the magnet 19 is embedded on the left wall of the second plate 18 and the magnetic member 20 is embedded on the right wall of the first plate 14.

[0034] During use, the user rotates the tube cover 6 to remove the tube cover 6, exposing the sphere 4, and releasing the seal on the left end of the second paste outlet channel 401. Subsequently, the user holds the hard tube body 1 in one hand, and pinches the second patch 18 and the first patch 14 with the other hand and rotates clockwise, so that the piston rod 11 rotates clockwise, so that the piston rod 11 moves to the left, thereby pushing the piston 8 to slide to the left, the space of the drug storage chamber 9 is reduced, and the ointment in the drug storage chamber 9 is pushed to the left, and the ointment overflows to the outside of the sphere 4 through the first paste outlet channel 301 and the second paste outlet channel 401. In this process, the user grasps the movement of the piston 8 through the scale line 2, thereby controlling the amount of ointment, and ensuring that the amount of ointment is similar each time the medicine is used. In addition, in the process of pushing the ointment, the blocking column 17 fills the first channel 801, and the second patch 18 is forced to be close to the first patch 14, and the blocking column 17 will not slide to the right, thereby preventing the ointment from entering the first channel 801.

[0035] After the ointment is discharged, the user places the sphere 4 on the affected area so that the ointment adheres to the affected area. Then, the user holds the hard tube body 1 with one hand and pinches the second patch 18 and the first patch 14 with the other hand and rotates counterclockwise, so that the piston rod 11 rotates counterclockwise. In this way, the piston rod 11 moves to the right, thereby pulling the piston 8 to slide to the right, and the space of the drug storage chamber 9 increases. A negative pressure is formed inside the drug storage chamber 9, and the ointment in the second ointment discharge channel 401 and the first ointment discharge channel 301 flows back, that is, there is a blank section in the second ointment discharge channel 401, which effectively prevents the ointment from overflowing. Then, the user places the sphere 4 on the affected area and evenly applies the ointment on the affected area. After the ointment is evenly applied, use a clean paper towel or cotton pad to wipe the sphere 4, and then thread the tube cover 6 onto the connecting tube 5 to seal the left end of the second ointment discharge channel 401 again.

[0036] In addition, when the user carries the ointment tube in this embodiment from a low altitude area to a high altitude area, the air pressure in the medicine storage chamber 9 (air is contained in the medicine storage chamber 9) is greater than the external environmental air pressure, and the ointment in the medicine storage chamber 9 pushes the resisting column 17 under the action of the air pressure to overcome the magnetic adsorption force between the magnet 19 and the magnetic suction member 20 and slide to the right, and the ointment enters the first channel 801 through the sealing film 16, increasing the actual space of the medicine storage chamber 9, thereby balancing the air pressure in the medicine storage chamber 9, and preventing the ointment from spraying out when the user opens the ointment tube in a high altitude area. Moreover, when the user uses the ointment in a high altitude area, first throw the ointment in the medicine storage chamber 9 to the right side of the medicine storage chamber 9, then open the tube cover 6, and then push the second patch 18 back to the first patch 14, so that the magnet 19 is magnetically adsorbed to the magnetic suction member 20 again; then push out the ointment according to the above operation.

[0037] In summary, in this embodiment, the ointment can be discharged and the ointment can be refluxed by rotating the piston rod 11, which can not only avoid excessive ointment extrusion, but also prevent overflow, and can make the amount of ointment discharged each time the medicine is used as similar as possible to avoid ointment waste. In addition, the ointment tube in this embodiment can adapt to high altitude areas, and there will be no problem of ointment spraying when it is opened in high altitude areas.

[0038] Embodiment 2

[0039] The difference between this embodiment and the first embodiment is that: Figure 5 and Figure 6 As shown, in this embodiment, a clamping column 21 is integrally formed on the left side wall of the second post plate 18, and a clamping hole 22 for the clamping column 21 to be clamped is provided on the right side wall of the first post plate 14. In this way, when the second post plate 18 is attached to the first post plate 14, the clamping column 21 is clamped into the clamping hole 22 to prevent the second post plate 18 and the first post plate 14 from rotating relative to each other. When the user rotates the piston rod 11, he only needs to press and rotate the second post plate 18, and there is no need to pinch the second post plate 18 and the first post plate 14. Compared with the first embodiment, the operation of this embodiment is more convenient.

[0040] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before the date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the present invention. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. An anti-overflow medical ointment tube, comprising a hard tube body, the hard tube body being provided with an ointment outlet connected to the interior of the hard tube body, characterized in that: A piston is axially slidably connected to the hard tube body, and the piston divides the internal space of the hard tube body into an independent medicine storage chamber and a blank chamber. A piston rod is rotatably connected to a side wall of the piston facing the blank chamber, and a threaded section is provided on the piston rod. A threaded through hole that matches the thread of the threaded section is opened on a side wall of the blank chamber away from the piston, and a first plate is provided at an end of the piston rod away from the piston; a first channel is provided in the piston, and a second channel connected to the first channel is provided in the piston rod, and the second channel is coaxial with the first channel, and a resisting column is provided in the second channel, and an end of the resisting column facing the medicine storage chamber is located in the first channel, and an end of the resisting column away from the medicine storage chamber is provided with a second plate, and a magnet is fixedly connected to a side wall of the second plate facing the first plate, and a magnetic attraction part that can be magnetically attracted to the magnet is fixedly connected to a side wall of the first plate facing the second plate; a sealing film for sealing the first channel is provided on a side wall of the piston facing the medicine storage chamber, and the sealing film has a margin extending into the first channel.

2. The anti-overflow medical ointment tube according to claim 1, characterized in that: A clamping column is arranged on one side wall of the second adhesive plate facing the first adhesive plate, and a clamping hole for the clamping column to be clamped into is opened on one side wall of the first adhesive plate facing the second adhesive plate.

3. The anti-overflow medical ointment tube according to claim 1 or 2, characterized in that: A sphere is provided at one end of the paste outlet nozzle away from the hard tube body, a first paste outlet channel is provided in the paste outlet nozzle, and a second paste outlet channel connected to the first paste outlet channel is provided in the sphere; a connecting pipe is provided at one end of the hard paste tube away from the first patch plate, a tube cover is threadedly connected to the connecting pipe, and a rubber layer is fixedly connected to a side wall of the tube cover facing the sphere.

4. The anti-overflow medical ointment tube according to claim 3, characterized in that: The outer diameter of the tube cover is smaller than or equal to the outer diameter of the hard tube body.

5. The anti-overflow medical ointment tube according to claim 3, characterized in that: The hard tube body is made of a transparent material and is provided with scale lines.

6. The anti-overflow medical ointment tube according to claim 5, characterized in that: The outer wall of the hard tube body is coated with a light-shielding coating, and the light-shielding coating does not cover the scale lines.

7. The anti-overflow medical ointment tube according to claim 1, characterized in that: A mounting block is integrally formed on a side wall of the blank cavity away from the piston, and the threaded through hole is arranged on the mounting block.

8. The anti-overflow medical ointment tube according to claim 1 or 7, characterized in that: A side wall of the blank cavity away from the piston is threadedly connected to the circumferential wall of the blank cavity.

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