Ointment mixing device

Abstract

The invention provides an ointment mixing device, which relates to the field of medical instruments and comprises an ointment extruding mechanism, an ointment mixing mechanism and an ointment applying mechanism, the ointment mixing mechanism is provided with two medicine inlets and a medicine outlet, and ointment enters the ointment mixing mechanism through the medicine inlets, is mixed in the ointment mixing mechanism and flows out of the ointment outlet; the ointment extrusion mechanism comprises a first ointment containing groove, a second ointment containing groove and an extrusion assembly which are communicated with the ointment inlet. The extrusion assembly comprises an extrusion shell, a first output gear, a first rack, a second output gear and a second rack, the transmission ratio of the output gears is adjustable, the racks are vertically and slidably connected to the shell and drive a first extrusion plug and a second extrusion plug at the lower end to move in the ointment containing groove, and sealed pushing is achieved; the medicine applying mechanism is detachably connected with the medicine outlet through the mixed ointment inlet. The ointment mixing device provided by the invention solves the problem that in the prior art, two different ointments are difficult to blend according to a required proportion, and can be conveniently mixed and blended according to different proportions.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to an ointment mixing device. Background Art

[0002] In the clinical treatment of eczema in dermatology, the combined use of drug A and drug B is a common means to improve the treatment effect. However, there are still many problems to be solved in the current mixing operation of eczema drugs.

[0003] The existing mixing methods of eczema drugs mostly rely on manual operation by medical staff, and are simply stirred and mixed in ordinary containers. This traditional method has obvious defects. On the one hand, when medical staff manually squeeze the ointment into the container, it is difficult to accurately control the dosage ratio of drug A and drug B, resulting in unstable drug concentration, affecting the treatment effect, and unable to meet the dosage requirements of individualized treatment for different patients. On the other hand, the manual mixing process is cumbersome and inefficient, unable to meet the treatment needs of a large number of clinical patients, and it is easy to cause drug contamination during the operation, posing a great health and safety hazard.

[0004] Some existing mixing devices can assist in mixing ointments. For example, a small medical single-rod hand-held mixing ointment extruder device disclosed in Chinese Patent Application No. 201420533926.2. However, this device does not have the function of controlling the ratio of ointments and it is difficult to completely avoid drug residue.

[0005] When the mixing ratio changes, the residual drug from the previous stirring will interfere with the components of the newly mixed drug, affecting the accuracy of drug ratio and the treatment effect. In addition, some components connecting the drug storage parts in the device are not convenient to disassemble and clean, further increasing the risk of drug residue and contamination. Summary of the Invention

[0006] In view of the above technical problems, the ointment mixing device provided by the present invention can facilitate the mixing and preparation of two kinds of ointments with different ratio requirements.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] The ointment mixing device provided by the present invention includes an ointment extrusion mechanism, an ointment mixing mechanism, and an ointment application mechanism; two medicine inlets and one medicine outlet are provided on the ointment mixing mechanism; different ointments entering the ointment mixing mechanism from the two medicine inlets can be mixed in the ointment mixing mechanism and then flow out from the medicine outlet; the ointment extrusion mechanism includes a first ointment accommodating groove, a second ointment accommodating groove, and an extrusion assembly; a first ointment outlet is provided at the bottom of the first ointment accommodating groove; a second ointment outlet is provided at the bottom of the second ointment accommodating groove; the first ointment outlet and the second ointment outlet are respectively communicated with one of the medicine inlets; the extrusion assembly includes an extrusion housing, a first output gear, a first rack, a second output gear, and a second rack; the rotation ratio between the first output gear and the second output gear is variable; the first output gear is in transmission connection with the first rack; the second output gear is in transmission connection with the second rack; both the first rack and the second rack extend in the vertical direction; both the first rack and the second rack can be slidably fixed on the extrusion housing; a first extrusion plug is fixed at the lower end of the first rack; the first ointment accommodating groove has an upward opening; the first extrusion plug can be slidably fixed in the first ointment accommodating groove; the first extrusion plug seals the side wall of the first ointment accommodating groove; a second extrusion plug is fixed at the lower end of the second rack; the second ointment accommodating groove has an upward opening; the second extrusion plug can be slidably fixed in the second ointment accommodating groove; the second extrusion plug seals the side wall of the second ointment accommodating groove; a mixed ointment inlet is provided on the ointment application mechanism; the ointment application mechanism is detachably fixed on the ointment mixing mechanism; when the ointment application mechanism is fixed on the ointment mixing mechanism, the mixed ointment inlet is hermetically communicated with the medicine outlet.

[0009] The ointment mixing device provided by the present invention, preferably, the extrusion assembly further includes a first transmission shaft and a second transmission shaft; both the first transmission shaft and the second transmission shaft extend horizontally; both the first transmission shaft and the second transmission shaft can be rotatably fixed on the extrusion housing; the first output gear is coaxially fixed on the first transmission shaft; the second output gear is coaxially fixed on the second transmission shaft; a first transmission gear, a second transmission gear, and a third transmission gear are fixed on the first transmission shaft; a fourth transmission gear, a fifth transmission gear, and a sixth transmission gear are fixed on the second transmission shaft; the first transmission gear is adapted to the fourth transmission gear; the second transmission gear is adapted to the fifth transmission gear; the third transmission gear is adapted to the sixth transmission gear; the fourth transmission gear, the fifth transmission gear, and the sixth transmission gear can all move along the axis direction of the second transmission shaft; the fourth transmission gear can be moved to mesh with the first transmission gear; the fifth transmission gear can be moved to mesh with the second transmission gear; the sixth transmission gear can be moved to mesh with the third transmission gear.

[0010] For the ointment mixing device provided by the present invention, preferably, a horizontally movable slider is fixed on the extrusion housing; the moving direction of the slider is perpendicular to the axis of the second transmission shaft; a bearing is fixed on the first slider; the second transmission shaft is coaxially fixed within the inner ring of the bearing.

[0011] For the ointment mixing device provided by the present invention, preferably, the ointment mixing mechanism includes a mixing housing, a mixing shaft, spiral mixing blades, and a first rotating handle; the mixing shaft is rotatably fixed on the mixing housing; the mixing housing has a mixing cavity; the spiral mixing blades are provided on the part of the mixing shaft inside the mixing cavity; the first rotating handle is fixed on the part of the mixing shaft outside the mixing cavity; the medicine inlet is arranged on the upper side of the mixing cavity; the medicine outlet is arranged on the lower side of the mixing cavity; the pitch of the spiral mixing blades gradually decreases from the medicine inlet to the medicine outlet.

[0012] For the ointment mixing device provided by the present invention, preferably, the inner walls of the first ointment receiving groove and the second ointment receiving groove are both provided with polytetrafluoroethylene coatings.

[0013] For the ointment mixing device provided by the present invention, preferably, the applying mechanism includes an applying tube and an applying piston; the applying piston can be inserted into the applying tube from the tube orifice of the applying tube; the applying piston is slidably fixed within the applying tube; during the sliding process of the applying piston relative to the applying tube, the applying piston seals the applying tube; a mixed ointment inlet is formed on the side wall of the applying tube; a one-way valve is arranged at the mixed ointment inlet; an applying orifice is arranged at the bottom of the applying tube.

[0014] For the ointment mixing device provided by the present invention, preferably, a first ointment inlet is formed on the side wall of the first ointment receiving groove; the first pressing plug can move above the first ointment inlet; the first pressing plug can move below the first ointment inlet; a second ointment inlet is formed on the side wall of the second ointment receiving groove; the second pressing plug can move above the second ointment inlet; the second pressing plug can move below the second ointment inlet.

[0015] For the ointment mixing device provided by the present invention, preferably, the first ointment receiving groove and the second ointment receiving groove are transparent; vertical scales are provided on the side walls of the first ointment receiving groove and the second ointment receiving groove.

[0016] For the ointment mixing device provided by the present invention, preferably, the applying tube is transparent; scales are provided on the side wall of the applying tube along the axial direction of the applying tube.

[0017] The ointment mixing device provided by the present invention. Preferably, the extrusion assembly further includes a second rotation handle; the second rotation handle is fixed at the position where the first transmission shaft extends out of the extrusion housing.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] The present invention provides an ointment mixing device, which relates to the field of medical devices and includes an ointment extrusion mechanism, an ointment mixing mechanism, and an ointment application mechanism; two medicine inlets and one medicine outlet are opened on the ointment mixing mechanism; different ointments entering the ointment mixing mechanism from the two medicine inlets can be mixed in the ointment mixing mechanism and then flow out from the medicine outlet; the ointment extrusion mechanism includes a first ointment containing tank, a second ointment containing tank, and an extrusion assembly; a first ointment outlet is opened at the bottom of the first ointment containing tank; a second ointment outlet is opened at the bottom of the second ointment containing tank; the first ointment outlet and the second ointment outlet are respectively communicated with one of the medicine inlets; the extrusion assembly includes an extrusion housing, a first output gear, a first rack, a second output gear, and a second rack; the rotation ratio between the first output gear and the second output gear is variable; the first output gear is in transmission connection with the first rack; the second output gear is in transmission connection with the second rack; the first rack and the second rack both extend in the vertical direction; the first rack and the second rack are both slidably fixed on the extrusion housing; a first extrusion plug is fixed at the lower end of the first rack; the first ointment containing tank has an upward opening; the first extrusion plug is slidably fixed in the first ointment containing tank; the first extrusion plug seals the side wall of the first ointment containing tank; a second extrusion plug is fixed at the lower end of the second rack; the second ointment containing tank has an upward opening; the second extrusion plug is slidably fixed in the second ointment containing tank; the second extrusion plug seals the side wall of the second ointment containing tank; a mixed ointment inlet is opened on the ointment application mechanism; the ointment application mechanism is detachably fixed on the ointment mixing mechanism; when the ointment application mechanism is fixed on the ointment mixing mechanism, the mixed ointment inlet is hermetically communicated with the medicine outlet. The ointment mixing device provided by the present invention solves the problem in the prior art that it is difficult to mix two different ointments according to the required ratio, and can conveniently mix and prepare two different ointments according to the required ratio. Description of the Drawings

[0020] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, the present invention and its features, shape, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the focus is on showing the gist of the present invention.

[0021] Figure 1 It is a schematic diagram of the overall structure of the ointment mixing device provided in Embodiment 1 of the present invention.

[0022] Figure 2 It is a schematic structural diagram when the first transmission gear and the fourth transmission gear of the extrusion assembly of the ointment mixing device provided in Embodiment 1 of the present invention are engaged.

[0023] Figure 3 It is a schematic structural diagram when the second transmission gear and the fifth transmission gear of the extrusion assembly of the ointment mixing device provided in Embodiment 1 of the present invention are engaged.

[0024] Figure 4 It is a schematic structural diagram when the third transmission gear and the sixth transmission gear of the extrusion assembly of the ointment mixing device provided in Embodiment 1 of the present invention are engaged.

[0025] Figure 5 It is a schematic structural diagram when the first transmission shaft and the second transmission shaft of the ointment mixing device provided in Embodiment 1 of the present invention are far away from each other.

[0026] Figure 6 It is a schematic structural diagram of the connection between the bearing and the second transmission shaft of the ointment mixing device provided in Embodiment 1 of the present invention. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. It should be noted that the terms used in the present invention are only for describing specific implementation manners, and are not intended to limit the exemplary implementation manners according to the present application.

[0028] The following describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Therefore, the detailed descriptions of the embodiments of the present invention provided in the following drawings are not intended to limit the scope of the claimed invention, but only represent the selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0029] Embodiment 1:

[0030] The ointment mixing device provided in Embodiment 1 of the present invention, as Figures 1 to 6As shown in the figure, it includes an ointment extrusion mechanism 1, an ointment mixing mechanism 2, and an ointment application mechanism 3. There are two medicine inlets and an outlet 212 on the ointment mixing mechanism 2. Different ointments entering the ointment mixing mechanism 2 from the two medicine inlets can be mixed in the ointment mixing mechanism 2 and flow out from the outlet 212. The ointment extrusion mechanism 1 includes a first ointment containing groove 11, a second ointment containing groove 12, and an extrusion assembly 13. A first ointment outlet 111 is provided at the bottom of the first ointment containing groove 11. A second ointment outlet 121 is provided at the bottom of the second ointment containing groove 12. The first ointment outlet 111 and the second ointment outlet 121 are respectively connected to a medicine inlet. The extrusion assembly 13 includes an extrusion housing 131, a first output gear 132, a first rack 133, a second output gear 134, and a second rack 135. The rotation ratio between the first output gear 132 and the second output gear 134 is variable. The first output gear 132 is in transmission connection with the first rack 133. The second output gear 134 is in transmission connection with the second rack 135. Both the first rack 133 and the second rack 135 extend in the vertical direction. Both the first rack 133 and the second rack 135 are slidably fixed on the extrusion housing 131. A first extrusion plug 1331 is fixed at the lower end of the first rack 133. The first ointment containing groove 11 has an upward opening. The first extrusion plug 1331 is slidably fixed in the first ointment containing groove 11. The first extrusion plug 1331 seals the side wall of the first ointment containing groove 11. A second extrusion plug 1351 is fixed at the lower end of the second rack 135. The second ointment containing groove 12 has an upward opening. The second extrusion plug 1351 is slidably fixed in the second ointment containing groove 12. The second extrusion plug 1351 seals the side wall of the second ointment containing groove 12. The ointment application mechanism 3 is provided with a mixed ointment inlet 311. The ointment application mechanism 3 is detachably fixed on the ointment mixing mechanism 2. When the ointment application mechanism 3 is fixed on the ointment mixing mechanism 2, the mixed ointment inlet 311 is hermetically connected to the outlet 212.

[0031] When the ointment mixing device provided in Embodiment 1 of the present invention is in use, the operator needs to first set two different ointments in the first ointment accommodating groove 11 and the second ointment accommodating groove 12 respectively, and adjust the first rack 133 and the second rack 135 in the vertical direction to ensure that the first pressing plug 1331 presses on the upper surface of the ointment in the first ointment accommodating groove 11 and the second pressing plug 1351 presses on the upper surface of the ointment in the second accommodating groove 12; then the operator operates the extrusion assembly 13 to adjust the rotation ratio of the first output gear 132 and the second output gear 134, so as to adjust the vertical moving distance of the first rack 133 and the second rack 135 (in this embodiment, the first ointment accommodating groove 11 and the second ointment accommodating groove 12 are preferably cylindrical and have the same shape; since the first rack 133 meshes with the first output gear 132, the second rack 135 meshes with the second output gear 134, and both the first rack 133 and the second rack 135 are restricted to move vertically on the extrusion housing 131; and since the first output gear 132 and the second output gear 134 have the same shape, when the rotation speeds of the first output gear 132 and the second output gear 134 are different and the rotation ratio is constant, the vertical moving distances of the first rack 133 and the second rack 135 are different. Therefore, on the premise that the first output gear 132 and the second output gear 134 start and stop rotating at the same time, the ratio of the vertical feeding distances of the first rack 133 and the second rack 135 is constant); therefore, the volume of the ointment extruded from the first ointment accommodating groove 11 and the second ointment accommodating groove 12 is constant in ratio on the premise that the horizontal cross-sectional areas of the first ointment accommodating groove 11 and the second ointment accommodating groove 12 are the same; the two different ointments enter the ointment mixing mechanism 2 from two medicine inlet ports respectively for mixing (the ointment mixing mechanism 2 is a prior art. A small medical single-rod hand-held mixed ointment extruder device disclosed in Chinese Patent Application No. 201420533926.2 can be used as the ointment mixing mechanism 2 in this embodiment. Its "feed inlet" can be used as the medicine inlet port in this embodiment, and its "discharge tray" can be used as the medicine outlet 212 in this embodiment), and the mixed ointment is extruded from the medicine outlet 212 and enters the medicine applying mechanism 3 from the mixed ointment inlet 311. After all the ointment enters the medicine applying mechanism 3, the medicine applying mechanism 3 is separated from the ointment mixing mechanism 2 for use (the detachable connection between the medicine outlet 212 and the mixed ointment inlet 311 is a common detachable connection of the outlet pipe in the prior art and will not be elaborated here).Compared with the prior art, it is difficult to control the proportion of different ointments when mixing ointments, resulting in poor effects of the mixed ointment. In this embodiment, only by adjusting the speed ratio of the first output gear 132 and the second output gear 134 of the extrusion assembly 13 and controlling the simultaneous rotation and stop of the first output gear 132 and the second output gear 134, the preparation of different ointments in a fixed proportion can be achieved, so as to obtain a mixed ointment with an accurate mixing ratio, and the operation steps are simple; moreover, the detachable connection structure between the medicine application mechanism 3 and the ointment mixing mechanism 2 enables all the mixed ointment to be in the medicine application mechanism 3, and there is no structure for storing ointment on the medicine application mechanism 3, making it more convenient to use and clean; at the same time, multiple medicine application mechanisms 3 can be prepared to replace the medicine application mechanism 3 when other proportions of mixed ointment are needed, and the original mixed ointment can be temporarily stored to avoid waste.

[0032] The ointment mixing device provided in this embodiment solves the problem in the prior art that it is difficult to mix two different ointments according to the required proportion, and can conveniently mix and prepare two different ointments with different proportion requirements.

[0033] To specifically implement the speed ratio adjustment between the first output gear 132 and the second output gear 134, as a preferred method, in this embodiment, the extrusion assembly 13 further includes a first transmission shaft 136 and a second transmission shaft 137; both the first transmission shaft 136 and the second transmission shaft 137 are horizontally extended; the first transmission shaft 136 and the second transmission shaft 137 are rotatably fixed on the extrusion housing 131; the first output gear 132 is coaxially fixed on the first transmission shaft 136; the second output gear 134 is coaxially fixed on the second transmission shaft 137; a first transmission gear 1361, a second transmission gear 1362, and a third transmission gear 1363 are fixed on the first transmission shaft 136; a fourth transmission gear 1371, a fifth transmission gear 1372, and a sixth transmission gear 1373 are fixed on the second transmission shaft 137; the first transmission gear 1361 is adapted to the fourth transmission gear 1371; the second transmission gear 1362 is adapted to the fifth transmission gear 1372; the third transmission gear 1363 is adapted to the sixth transmission gear 1373; the fourth transmission gear 1371, the fifth transmission gear 1372, and the sixth transmission gear 1373 can all move along the axial direction of the second transmission shaft 137; the fourth transmission gear 1371 can move to mesh with the first transmission gear 1361; the fifth transmission gear 1372 can move to mesh with the second transmission gear 1362; the sixth transmission gear 1373 can move to mesh with the third transmission gear 1363. In the preferred solution of this embodiment, a strong magnet is provided on the extrusion housing 131. When the fourth transmission gear 1371, the fifth transmission gear 1372, and the sixth transmission gear 1373 move to specific positions, the second transmission shaft 137 will automatically align and be adsorbed on the extrusion housing 131. The purpose of setting the strong magnet is to facilitate the operator to achieve rapid transmission ratio adjustment. Ointment A is provided in the first ointment containing groove 11, and ointment B is provided in the second ointment containing groove 12; due to the requirement of the mixing ratio of the required mixing amount of the ointment to be mixed in different treatment cycles in this embodiment, during the production of the mixed ointment by the equipment of this embodiment, when the first transmission gear 1361 meshes with the fourth transmission gear 1371, the content ratio of the mixed ointment of ointment A and ointment B is 4:6; when the second transmission gear 1362 meshes with the fifth transmission gear 1372, the content ratio of the mixed ointment of ointment A and ointment B is 5:5; when the third transmission gear 1363 meshes with the sixth transmission gear 1373, the content ratio of the mixed ointment of ointment A and ointment B is 6:4.

[0034] In the above structure, when the first transmission shaft 136 and the second transmission shaft 137 move relative to each other, and during the process of the first transmission gear 1361 meshing with and disengaging from the fourth transmission gear 1371, the second transmission gear 1362 meshing with and disengaging from the fifth transmission gear 1372, and the third transmission gear 1363 meshing with and disengaging from the sixth transmission gear 1373, relative sliding will occur, thus causing wear. To avoid this situation, in this embodiment, a horizontally movable slider 1311 is fixed on the extrusion housing 131; the moving direction of the slider 1311 is perpendicular to the axis of the second transmission shaft 137; a bearing 1313 is fixed on the slider 1311; the second transmission shaft 137 is coaxially fixed within the inner ring of the bearing 1313. When the slider 1311 moves relative to the extrusion housing 131, the second transmission shaft 137 realizes a movement perpendicular to the axis direction of the second transmission shaft 137; thereby realizing the movement of the first transmission gear 1361, the second transmission gear 1362, and the third transmission gear 1363 moving away from and approaching the fourth transmission gear 1371, the fifth transmission gear 1372, and the sixth transmission gear 1373. The purpose of the above movement is to avoid the collision interference of the fourth transmission gear 1371, the fifth transmission gear 1372, and the sixth transmission gear 1373 with the first transmission gear 1361, the second transmission gear 1362, and the third transmission gear 1363 when they move along the axis direction of the second transmission shaft 137. Preferably, in this embodiment, a strong magnet is provided on the slider 1311, and a strong magnet is provided on the extrusion housing 131. When it is necessary to ensure the meshing of the first transmission gear 1361 with the fourth transmission gear 1371 (the same applies to the meshing of the second transmission gear 1362 with the fifth transmission gear 1372 and the meshing of the third transmission gear 1363 with the sixth transmission gear 1373), that is, to control the strong magnet on the slider 1311 to adsorb with the strong magnet on the extrusion housing 131. When it is necessary to adjust the positions of the fourth transmission gear 1371, the fifth transmission gear 1372, and the sixth transmission gear 1373, it is necessary to manually separate the magnetic connection between the slider 1311 and the extrusion housing 131.

[0035] As a preferred scheme, in this embodiment, the ointment mixing mechanism 2 includes a mixing shell 21, a mixing shaft 22, a spiral mixing blade 23 and a first rotating handle 24; the mixing shaft 22 can be rotatably fixed on the mixing shell 21; the mixing shell 21 has a mixing chamber; the inner part of the mixing shaft 22 in the mixing chamber is provided with a spiral mixing blade 23; the part of the mixing shaft 22 outside the mixing chamber is fixed with a first rotating handle 24; the drug inlet is arranged on the upper side of the mixing chamber; the drug outlet 212 is arranged on the lower side of the mixing chamber; the pitch of the spiral mixing blade 23 gradually decreases from the drug inlet to the drug outlet 212. The staff can manually operate the first rotating handle 24 to realize the rotation of the mixing shaft 22 compared to the mixing shell 21, and the rotating shaft is the axis of the mixing shaft 22; the two different ointments entering the mixing chamber from the drug inlet can be stirred after contacting the spiral mixing blades 23, and move toward the drug outlet 212; the pitch of the spiral mixing blades 23 gradually decreases from the drug inlet to the drug outlet, and when the ointment is advanced with the spiral mixing blades 23, the number of stirring times of the ointment per unit length increases, and the shear force gradually increases, so that different ointments can be more fully mixed during the flow process; and because the pitch of the spiral mixing blades 23 decreases, the extrusion force on the ointment at the outlet is the largest, which helps to completely discharge the residual ointment.

[0036] In this embodiment, the inner walls of the first ointment holding groove 11 and the second ointment holding groove 12 are both provided with polytetrafluoroethylene coatings. Polytetrafluoroethylene has a low surface energy, and the purpose of providing the polytetrafluoroethylene coating is to reduce the adhesion between the ointment and the groove wall, so that the ointment can be more smoothly separated from the inner wall of the container during the extrusion process, reducing the residual amount.

[0037] In this embodiment, the coating mechanism 3 includes a coating tube 31 and a coating piston 32; the coating piston 32 can be inserted into the coating tube 31 from the tube mouth of the coating tube 31; the coating piston 32 can be slidably fixed in the coating tube 31; during the sliding process of the coating piston 32 relative to the coating tube 31, the coating piston 32 seals the coating tube 31; a mixed ointment inlet 311 is provided on the side wall of the coating tube 31; a one-way valve is provided at the mixed ointment inlet 311; and a coating port 312 is provided at the bottom of the coating tube 31. The one-way valve at the mixed ointment inlet 311 only allows the ointment to flow from the mixing mechanism into the coating tube 31, in order to prevent the mixed ointment from flowing back in reverse; by pushing the coating piston 32 to slide in the coating tube 31, the amount of ointment extruded can be accurately controlled; the operator can gradually squeeze out an appropriate amount of ointment according to the size of the affected area and the condition, avoiding the problem of excessive or insufficient dosage commonly seen in traditional coating methods.

[0038] In this embodiment, a first ointment inlet 112 is provided on the side wall of the first ointment containing groove 11; the first extrusion plug 1331 can be moved above the first ointment inlet 112; the first extrusion plug 1331 can be moved below the first ointment inlet 112; a second ointment inlet 122 is provided on the side wall of the second ointment containing groove 12; the second extrusion plug 1351 can be moved above the second ointment inlet 122; the second extrusion plug 1351 can be moved below the second ointment inlet 122. The first ointment containing groove 11 and the second ointment containing groove 12 are transparent; vertical scales are provided on the side walls of the first ointment containing groove 11 and the second ointment containing groove 12. The first extrusion plug 1331 and the second extrusion plug 1351 can be respectively moved above or below the ointment inlet to realize the switching between the medicine adding state and the sealing state; when the extrusion plug is moved below the inlet, the ointment can be replenished through the inlet; when the extrusion plug rises above the inlet, the containing groove can be closed to prevent the ointment from leaking or being contaminated. The transparent containing groove is matched with the vertical scale, enabling the operator to directly observe the remaining amount and the added amount of the ointment; when the ointment is insufficient, it is convenient for the operator to observe and replenish the ointment in time; and the normal adjustment of the extrusion assembly 13 can be judged according to the vertical moving distance of the first extrusion plug 1331 and the second extrusion plug 1351.

[0039] In this embodiment, the medicine applying tube 31 is transparent; scales are provided on the side wall of the medicine applying tube 31 along the tube axis direction of the medicine applying tube 31. The operator can directly observe the stock of the ointment in the tube and accurately control the extrusion amount through the scales.

[0040] In this embodiment, the extrusion assembly 13 further includes a second rotating handle 138; a second rotating handle 138 is fixed at the position where the first transmission shaft 136 extends out of the extrusion housing 131. The operator can directly drive the first transmission shaft 136 by rotating the second rotating handle 138 without power support and directly realize the rotation of the first output gear 132; the rotation of the first transmission shaft 136 can drive the rotation of the second transmission shaft 137, thereby driving the rotation of the second output gear 134.

[0041] In summary, the present invention provides an ointment mixing device, which relates to the field of medical devices and includes an ointment extrusion mechanism, an ointment mixing mechanism, and an ointment application mechanism. Two medicine inlets and one medicine outlet are provided on the ointment mixing mechanism. Different ointments entering the ointment mixing mechanism from the two medicine inlets can be mixed in the ointment mixing mechanism and then flow out from the medicine outlet. The ointment extrusion mechanism includes a first ointment containing groove, a second ointment containing groove, and an extrusion assembly. A first ointment outlet is provided at the bottom of the first ointment containing groove. A second ointment outlet is provided at the bottom of the second ointment containing groove. The first ointment outlet and the second ointment outlet are respectively communicated with one of the medicine inlets. The extrusion assembly includes an extrusion housing, a first output gear, a first rack, a second output gear, and a second rack. The transmission ratio between the first output gear and the second output gear is variable. The first output gear is in transmission connection with the first rack. The second output gear is in transmission connection with the second rack. The first rack and the second rack both extend in the vertical direction. The first rack and the second rack are both slidably fixed on the extrusion housing. A first extrusion plug is fixed at the lower end of the first rack. The first ointment containing groove has an upward opening. The first extrusion plug is slidably fixed in the first ointment containing groove. The first extrusion plug seals the side wall of the first ointment containing groove. A second extrusion plug is fixed at the lower end of the second rack. The second ointment containing groove has an upward opening. The second extrusion plug is slidably fixed in the second ointment containing groove. The second extrusion plug seals the side wall of the second ointment containing groove. A mixed ointment inlet is provided on the ointment application mechanism. The ointment application mechanism is detachably fixed on the ointment mixing mechanism. When the ointment application mechanism is fixed on the ointment mixing mechanism, the mixed ointment inlet is hermetically communicated with the medicine outlet. The ointment mixing device provided by the present invention solves the problem in the prior art that it is difficult to mix two different ointments according to the required ratio, and can facilitate the mixing and preparation of two different ointments with different ratio requirements.

[0042] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A medicament paste mixing device, characterized in that it includes a medicament paste extrusion mechanism, a medicament paste mixing mechanism and an applying mechanism; two medicament inlets and one medicament outlet are formed on the medicament paste mixing mechanism; different medicament pastes entering the medicament paste mixing mechanism from the two medicament inlets can be mixed in the medicament paste mixing mechanism and then flow out from the medicament outlet; the medicament paste extrusion mechanism includes a first medicament paste accommodating groove, a second medicament paste accommodating groove and an extrusion assembly; a first medicament paste outlet is formed at the bottom of the first medicament paste accommodating groove; a second medicament paste outlet is formed at the bottom of the second medicament paste accommodating groove; the first medicament paste outlet and the second medicament paste outlet are respectively communicated with one of the medicament inlets; the extrusion assembly includes an extrusion housing, a first output gear, a first rack, a second output gear and a second rack; the transmission ratio between the first output gear and the second output gear is variable; the first output gear is in transmission connection with the first rack; the second output gear is in transmission connection with the second rack; the first rack and the second rack both extend in the vertical direction; the first rack and the second rack are both slidably fixed on the extrusion housing; a first extrusion plug is fixed at the lower end of the first rack; the first medicament paste accommodating groove has an upward opening; the first extrusion plug is slidably fixed in the first medicament paste accommodating groove; the first extrusion plug seals the side wall of the first medicament paste accommodating groove; a second extrusion plug is fixed at the lower end of the second rack; the second medicament paste accommodating groove has an upward opening; the second extrusion plug is slidably fixed in the second medicament paste accommodating groove; the second extrusion plug seals the side wall of the second medicament paste accommodating groove; a mixed medicament paste inlet is formed on the applying mechanism; the applying mechanism is detachably fixed on the medicament paste mixing mechanism; when the applying mechanism is fixed on the medicament paste mixing mechanism, the mixed medicament paste inlet is hermetically communicated with the medicament outlet.

2. The medicament paste mixing device according to claim 1, characterized in that the extrusion assembly further includes a first transmission shaft and a second transmission shaft; the first transmission shaft and the second transmission shaft both extend horizontally; the first transmission shaft and the second transmission shaft are both rotatably fixed on the extrusion housing; the first output gear is coaxially fixed on the first transmission shaft; the second output gear is coaxially fixed on the second transmission shaft; a first transmission gear, a second transmission gear and a third transmission gear are fixed on the first transmission shaft; a fourth transmission gear, a fifth transmission gear and a sixth transmission gear are fixed on the second transmission shaft; the first transmission gear is adapted to the fourth transmission gear; the second transmission gear is adapted to the fifth transmission gear; the third transmission gear is adapted to the sixth transmission gear; the fourth transmission gear, the fifth transmission gear and the sixth transmission gear can all move along the axis direction of the second transmission shaft; the fourth transmission gear can move to be engaged with the first transmission gear; the fifth transmission gear can move to be engaged with the second transmission gear; the sixth transmission gear can move to be engaged with the third transmission gear.

3. The medicament paste mixing device according to claim 2, characterized in that A slider that can move horizontally is fixed on the extrusion housing; the moving direction of the slider is perpendicular to the axis of the second transmission shaft; A bearing is fixed on the first slider; The second transmission shaft is coaxially fixed inside the inner ring of the bearing.

4. The ointment mixing device according to claim 1, characterized in that, The ointment mixing mechanism includes a mixing housing, a mixing shaft, spiral mixing blades and a first rotating handle; The mixing shaft is rotatably fixed on the mixing housing; The mixing housing has a mixing cavity; the spiral mixing blades are arranged on the part of the mixing shaft inside the mixing cavity; the first rotating handle is fixed on the part of the mixing shaft outside the mixing cavity; The medicine inlet is arranged on the upper side of the mixing cavity; The medicine outlet is arranged on the lower side of the mixing cavity; The pitch of the spiral mixing blades gradually decreases from the medicine inlet to the medicine outlet.

5. The ointment mixing device according to claim 1, characterized in that, The inner walls of the first ointment accommodating groove and the second ointment accommodating groove are both provided with polytetrafluoroethylene coatings.

6. The ointment mixing device according to claim 1, characterized in that, The medicine applying mechanism includes a medicine applying tube and a medicine applying piston; the medicine applying piston can be inserted into the medicine applying tube from the tube orifice of the medicine applying tube; the medicine applying piston is slidably fixed in the medicine applying tube; during the sliding process of the medicine applying piston relative to the medicine applying tube, the medicine applying piston seals the medicine applying tube; A mixing ointment inlet is formed on the side wall of the medicine applying tube; a one-way valve is arranged at the mixing ointment inlet; A medicine applying orifice is arranged at the bottom of the medicine applying tube.

7. The ointment mixing device according to claim 1, wherein, A first ointment inlet is formed on the side wall of the first ointment accommodating groove; the first extrusion plug can move above the first ointment inlet; the first extrusion plug can move below the first ointment inlet; A second ointment inlet is formed on the side wall of the second ointment accommodating groove; the second extrusion plug can move above the second ointment inlet; the second extrusion plug can move below the second ointment inlet.

8. The ointment mixing device according to claim 1, characterized in that, The first ointment accommodating groove and the second ointment accommodating groove are transparent; Vertical scales are arranged on the side walls of the first ointment accommodating groove and the second ointment accommodating groove.

9. The ointment mixing device according to claim 6, characterized in that, The medicine applying tube is transparent; scales are arranged on the side wall of the medicine applying tube along the axial direction of the medicine applying tube.

10. The ointment mixing device according to claim 2, characterized in that, The extrusion assembly further includes a second rotating handle; The second rotating handle is fixed at the position where the first transmission shaft extends out of the extrusion housing.

Images