Medicine applying auxiliary device

Abstract

The invention discloses a medicine applying auxiliary device which comprises a first medicine storage cylinder, a material pushing mechanism, a second medicine storage cylinder, a supporting roller and a medicine squeezing mechanism. The pushing mechanism is used for quantitatively extruding the ointment in the first medicine storage barrel from the medicine extruding opening; the second medicine storage cylinder is arranged at the bottom of the first medicine storage cylinder and communicated with the medicine inlet, and a medicine outlet is formed in the bottom of the second medicine storage cylinder; the four supporting rollers are symmetrically arranged at the four corners of the second medicine storage cylinder in pairs; the medicine squeezing mechanism is arranged in the second medicine storage barrel and used for slowly squeezing out the ointment from the medicine outlet. The medicine applying auxiliary device can realize cooperative control of quantitative extrusion and slow release so as to improve the utilization rate of the ointment.

Description

Technical Field

[0001] The present invention particularly relates to a drug application auxiliary device. Background Art

[0002] In clinical practice, some drugs need to be applied to the skin. Existing applicators mostly use a single-cavity structure, and ointments are squeezed out by manual squeezing or a simple push rod. This has the following drawbacks: Inaccurate dosage control: The traditional push rod structure makes it difficult to achieve quantitative extrusion, which can easily lead to ointment waste or over-application; Ointment residue problem: Ointment is easily left at the bottom of the single-cavity cartridge, which cannot be fully utilized; Inconvenience in operation: Manual operation requires frequent application of force, which can easily lead to fatigue after long-term use, and it is difficult to synchronously control the extrusion of ointment and the movement of the device; Insufficient uniformity: Direct extrusion of the medicine can easily lead to concentrated accumulation of the ointment, affecting skin absorption. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by the present invention is to provide a drug application auxiliary device that can achieve coordinated control of quantitative extrusion and slow release to improve the utilization rate of the ointment.

[0004] In order to achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a drug application auxiliary device, comprising: The first drug storage cylinder has a drug extrusion port at the bottom and a drug inlet at the side near the bottom; a pushing mechanism for quantitatively squeezing the ointment in the first drug storage cylinder out of the drug extrusion port; A second drug storage cylinder is provided at the bottom of the first drug storage cylinder and is connected to the drug inlet, and has a drug outlet at the bottom; There are four supporting rollers, which are symmetrically arranged in pairs at the four corners of the second drug storage cylinder; and The medicine squeezing mechanism is arranged in the second medicine storage cylinder and is used for slowly squeezing the ointment out of the medicine outlet.

[0005] Furthermore, the pushing mechanism includes a push plate, a push rod and a nut. The push plate is sealed and axially slidably arranged in the first medicine storage cartridge. The nut is rotatably arranged on the top of the first medicine storage cartridge. The push rod is fixed to the push plate, and its top end passes through the nut and is threadedly connected to the nut. A scale is provided on the push rod along its axial direction.

[0006] Furthermore, the medicine squeezing mechanism includes a squeezing block, a squeezing rod and an squeezing drive source. The squeezing block can be slidably inserted into the second medicine storage cartridge in the radial direction to block the medicine outlet. The squeezing rod is fixed to the exposed end of the squeezing block. The squeezing drive source is connected to the squeezing rod. During the movement of the medicine application auxiliary device, the squeezing drive source can periodically drive the squeezing block to slide radially to squeeze out the ointment.

[0007] Furthermore, the extrusion drive source includes a first eccentric wheel, an elastic connecting member and a pressure plate, the first eccentric wheel is fixed to the rotating shaft of any supporting roller; the pressure plate is arranged at the end of the extrusion rod; the elastic connecting member connects the pressure plate and the outer wall of the second drug storage cartridge; wherein, when the first eccentric wheel rotates, it periodically moves the pressure plate and resets it through the elastic connecting member.

[0008] Furthermore, a downwardly inclined wedge-shaped surface is provided on the top of the side of the extrusion block away from the extrusion rod, for guiding the ointment to flow toward the medicine outlet.

[0009] Furthermore, it also includes a scraper, which is arranged on the outside of the second drug storage cylinder, with its bottom suspended in the air and baffles provided on both sides.

[0010] Furthermore, the outer wall of the second medicine storage cylinder is provided with a vertical downward sliding groove, the end of the scraper is provided with a slider that is slidably engaged with the sliding groove, and the slider is provided with a locking piece that can lock the slider in the sliding groove.

[0011] Furthermore, the side wall of the scraper facing the second medicine storage cartridge is provided with a plurality of storage grooves arranged transversely side by side, and the width of the storage grooves decreases from bottom to top. The scraper is a hollow plate, and is provided with a through hole connecting the storage grooves with the inner cavity of the scraper, and the ointment can flow into the inner cavity of the scraper from the through hole.

[0012] Furthermore, it also includes a recovery mechanism, which can transport the ointment collected in the scraper cavity back to the second drug storage cylinder.

[0013] Furthermore, the recovery mechanism includes an elastic airbag, a first one-way valve, a second one-way valve and a second eccentric wheel. The elastic airbag is arranged outside the second medicine storage cartridge. The first one-way valve and the second one-way valve are elastically arranged at both ends of the elastic airbag relative to each other. The first one-way valve leads to the inside of the elastic airbag, and the second one-way valve leads to the outside of the elastic airbag. The first one-way valve is connected to the inner cavity of the scraper through an air pipe, and the second one-way valve is connected to the inner cavity of the second medicine storage cartridge through an air pipe. The second eccentric wheel is fixed on the rotating shaft of one of the support rollers on the same side, and can rotate synchronously with the rotating shaft of the support roller. When the second eccentric wheel rotates, it can squeeze the elastic airbag in a gap.

[0014] Beneficial effects of the present invention: When using the above-mentioned drug application auxiliary device, the liquid ointment is first stored in the first drug storage cylinder, and then it is quantitatively squeezed out from the drug extrusion port through the pushing mechanism according to the single dose, and enters the second drug storage cylinder through the drug inlet. Then, the drug application auxiliary device is placed on the skin surface and the entire device is manually pushed. While the supporting roller rolls along the skin surface, the drug extrusion mechanism slowly squeezes out the ointment from the drug outlet until the ointment in the second drug storage cylinder is completely used up.

[0015] The above-mentioned drug application auxiliary device is used: the double liquid storage cylinder design realizes the secondary distribution of the ointment, ensuring precise control of the ointment dosage; the support roller provides the entire device with a coating space while allowing the device to move smoothly and be easy to operate; the drug squeezing mechanism realizes the slow and uniform release of the ointment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 A schematic diagram of a drug application assisting device provided in one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram at A in the middle; Figure 3 for Figure 1 A schematic diagram of the application aid shown in another angle; Figure 4 for Figure 3 Schematic diagram at point B in the middle; Figure 5 for Figure 1 A schematic diagram of a scraper in a coating auxiliary device is shown; Reference numerals: 100, first medicine storage cartridge; 200, pushing mechanism; 210, pushing rod; 220, nut; 300, second medicine storage cartridge; 400, supporting roller; 500, medicine squeezing mechanism; 510, squeezing block; 520, squeezing rod; 530, squeezing drive source; 531, first eccentric wheel; 532, elastic connecting member; 533, pressing plate; 600, scraper; 610, slider; 620, receiving groove; 630, through hole; 700, recovery mechanism; 710, elastic airbag; 720, second eccentric wheel. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] See Figures 1 to 5 The present invention provides a drug application auxiliary device, including a first drug storage cartridge 100, a pushing mechanism 200, a second drug storage cartridge 300, a supporting roller 400 and a drug squeezing mechanism 500.

[0020] Specifically, the first drug storage cartridge 100 is provided with a drug extrusion port at the bottom and a drug inlet at the side near the bottom. A pushing mechanism 200 is used to quantitatively squeeze the ointment in the first drug storage cartridge 100 from the drug extrusion port. The second drug storage cartridge 300 is provided at the bottom of the first drug storage cartridge 100 and is connected to the drug inlet. A drug outlet is provided at the bottom. Four support rollers 400 are symmetrically arranged in pairs at the four corners of the second drug storage cartridge 300. A drug extrusion mechanism 500 is provided within the second drug storage cartridge 300 and is used to slowly squeeze the ointment from the drug outlet.

[0021] During use, the liquid ointment is first stored in the first drug storage cartridge 100, and then quantitatively squeezed out from the drug extrusion port by the pushing mechanism 200 according to the single dose, and enters the second drug storage cartridge 300 through the drug inlet. Then, the drug application auxiliary device is placed on the skin surface and the entire device is pushed manually. While the support roller 400 rolls along the skin surface, the drug extrusion mechanism 500 slowly squeezes out the ointment from the drug outlet until the ointment in the second drug storage cartridge 300 is completely used up.

[0022] The above-mentioned auxiliary device for applying the medicine is used: the double liquid storage cylinder design realizes the secondary distribution of the ointment, ensuring the precise control of the amount of ointment used; the support roller 400 provides a coating space for the entire device while allowing the device to move smoothly and be easy to operate, thereby achieving slow and uniform release of the ointment.

[0023] In this embodiment, the pushing mechanism 200 includes a push plate, a push rod 210 and a nut 220. The push plate is sealed and axially slidably arranged in the first drug storage cartridge 100. The nut 220 is rotatably arranged at the top of the first drug storage cartridge 100. The push rod 210 is fixed to the push plate, and its top end passes through the nut 220 and is threadedly connected to the nut 220. A scale is provided on the push rod 210 along its axial direction.

[0024] During use, rotating the nut 220 causes the push rod 210 to move the push plate axially, pushing the ointment out of the extrusion port. The threaded connection allows precise control of the push plate's displacement, thereby precisely controlling the amount of ointment extruded. Furthermore, the scale on the push rod 210 can be used to further achieve quantitative ointment extrusion.

[0025] In this embodiment, the medicine squeezing mechanism 500 includes an extrusion block 510, an extrusion rod 520 and an extrusion drive source 530. The extrusion block 510 can be slidably inserted into the second medicine storage cartridge 300 along the radial direction to block the medicine outlet. The extrusion rod 520 is fixed to the exposed end of the extrusion block 510. The extrusion drive source 530 is connected to the extrusion rod 520. During the movement of the medicine application auxiliary device, the extrusion drive source 530 can periodically drive the extrusion block 510 to slide radially to squeeze out the ointment.

[0026] During use, as the medicine application auxiliary device moves, the extrusion drive source 530 periodically drives the extrusion block 510 to slide radially. When the extrusion block 510 moves inward, the compressed ointment is squeezed out from the medicine outlet, and the extrusion stops when it moves outward.

[0027] In this way, intermittent extrusion of the ointment can be achieved, avoiding excessive release of the ointment at one time; at the same time, the extrusion of the ointment is synchronized with the movement of the entire device, avoiding the ointment from continuing to be squeezed out during the stop process, causing ointment accumulation and waste, and further improving the effectiveness of the ointment.

[0028] Specifically, the extrusion drive source 530 includes a first eccentric wheel 531, an elastic connecting member 532 and a pressure plate 533. The first eccentric wheel 531 is fixed to the rotating shaft of any supporting roller 400; the pressure plate 533 is arranged at the end of the extrusion rod 520; the elastic connecting member 532 connects the pressure plate 533 and the outer wall of the second drug storage cartridge 300; wherein, when the first eccentric wheel 531 rotates, it periodically moves the pressure plate 533 and resets it through the elastic connecting member 532.

[0029] During use, as the support roller 400 rolls against the skin, it drives the first eccentric wheel 531 to rotate. The first eccentric wheel 531 periodically moves the pressure plate 533 to move the extrusion rod 520 inward. The elastic connector 532 provides a restoring force to return the extrusion rod 520 to its original position. This method can automatically drive the medicine extrusion action by utilizing the movement of the roller, without the need for additional power. At the same time, it is compact and labor-saving to operate.

[0030] In practice, a downwardly inclined wedge-shaped surface can be provided on the top of the extrusion block 510, away from the extrusion rod 520, to guide the ointment toward the outlet. When the extrusion block 510 returns to its original position, the wedge-shaped surface guides the ointment toward the outlet, preventing accumulation behind the extrusion block 510. This improves ointment extrusion efficiency, reduces residue, and ensures smooth ointment flow.

[0031] It should be noted that, in a specific implementation, a baffle can be provided at the bottom of the first drug storage cartridge 100, which can only be opened toward the second drug storage cartridge 300. The baffle is hinged to the first drug storage cartridge 100 through a coil spring. When the pushing mechanism 200 pushes the medicine, the baffle opens. When the pushing mechanism 200 stops pushing the medicine, the baffle is reset by the coil spring, which can prevent the ointment from flowing back into the first drug storage cartridge 100 when the medicine squeezing mechanism 500 squeezes the medicine.

[0032] As another effective embodiment, the device further includes a scraper 600 , which is disposed on the outside of the second drug storage cartridge 300 , with its bottom suspended and baffles disposed on both sides.

[0033] During use, the ointment squeezed out of the medicine outlet is evenly spread on the skin surface by the scraper 600, and the baffle prevents the ointment from overflowing sideways, thereby achieving uniform application of the ointment.

[0034] In specific implementation, the side wall of the scraper 600 facing the second drug storage cartridge is provided with multiple storage grooves 620 arranged horizontally side by side, and the width of the storage grooves 620 decreases from bottom to top. The scraper 600 is a hollow plate, and a through hole 630 is provided on the scraper to connect the storage groove with the inner cavity of the scraper. The ointment can flow into the inner cavity of the scraper from the through hole.

[0035] During use, when the scraper 600 moves, excess ointment is collected by the scraper 600 and flows into the inner cavity through the through hole 630 for temporary storage; the wedge-shaped receiving groove 620 facilitates the flow of ointment. The excess ointment can be recycled to avoid waste.

[0036] As another preferred embodiment, the outer wall of the second drug storage cartridge 300 is provided with a vertical downward slide groove, and the end of the scraper 600 is provided with a slider 610 that slides and engages with the slide groove. The slider 610 is provided with a locking piece that can lock the slider 610 in the slide groove.

[0037] During use, the height of the scraper 600 can be adjusted by loosening the locking member to suit different application requirements; locking it firmly fixes the position. The adjustable application thickness is provided to suit different ointment characteristics.

[0038] As a more preferred embodiment, the device further comprises a recovery mechanism 700 , which can transport the ointment collected in the inner cavity of the scraper 600 back to the second drug storage cartridge 300 .

[0039] Specifically, the recovery mechanism 700 includes an elastic airbag 710, a first one-way valve, a second one-way valve, and a second eccentric wheel 720. The elastic airbag 710 is arranged outside the second drug storage cartridge 300. The first one-way valve and the second one-way valve are elastically arranged at opposite ends of the elastic airbag 710. The first one-way valve leads to the inside of the elastic airbag 710, and the second one-way valve leads to the outside of the elastic airbag 710. The first one-way valve is connected to the inner cavity of the scraper 600 through an air pipe, and the second one-way valve is connected to the inner cavity of the second drug storage cartridge 300 through an air pipe. The second eccentric wheel 720 is fixed on the rotating shaft of one of the support rollers 400 on the same side and can rotate synchronously with the rotating shaft of the support roller 400. When the second eccentric wheel 720 rotates, it can intermittently squeeze the elastic airbag 710. The second eccentric wheel 720 rotates one circle with the support roller 400, which means it squeezes the elastic airbag once.

[0040] During use, the rotation of the roller drives the second eccentric wheel 720 to periodically squeeze the airbag, generating negative pressure to suck the ointment into the scraper 600, and positive pressure to press the ointment into the second drug storage cylinder 300; the one-way valve controls the flow direction.

[0041] In this way, the ointment can be automatically recovered without manual operation. It only needs to use the existing roller power, which is energy-saving and efficient.

[0042] The above-mentioned application auxiliary device: This device uses a dual liquid storage cylinder and linkage mechanism design to achieve full process control of ointment "quantitative extrusion - uniform release - surplus recovery". It has the comprehensive advantages of labor-saving operation, precise dosage and high utilization rate. It is particularly suitable for the application of external preparations that require precise medication.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A drug application auxiliary device, characterized in that: include: The first drug storage cylinder has a drug extrusion port at the bottom and a drug inlet at the side near the bottom; a pushing mechanism for quantitatively squeezing the ointment in the first drug storage cylinder out of the drug extrusion port; A second drug storage cylinder is provided at the bottom of the first drug storage cylinder and is connected to the drug inlet, and has a drug outlet at the bottom; There are four supporting rollers, which are symmetrically arranged in pairs at the four corners of the second drug storage cylinder; and The medicine squeezing mechanism is arranged in the second medicine storage cylinder and is used for slowly squeezing the ointment out of the medicine outlet.

2. The drug application aid according to claim 1, characterized in that The pushing mechanism includes a push plate, a push rod and a nut. The push plate is sealed and axially slidably arranged in the first medicine storage cartridge. The nut is rotatably arranged on the top of the first medicine storage cartridge. The push rod is fixed to the push plate, and its top end passes through the nut and is threadedly connected to the nut. A scale is provided on the push rod along its axial direction.

3. The drug application auxiliary device according to claim 1, characterized in that The medicine squeezing mechanism includes a squeezing block, a squeezing rod and an squeezing drive source. The squeezing block can be slidably inserted into the second medicine storage cartridge in the radial direction to block the medicine outlet. The squeezing rod is fixed to the exposed end of the squeezing block. The squeezing drive source is connected to the squeezing rod. During the movement of the medicine application auxiliary device, the squeezing drive source can periodically drive the squeezing block to slide radially to squeeze out the ointment.

4. The drug application aid according to claim 3, characterized in that: The extrusion drive source includes a first eccentric wheel, an elastic connecting member and a pressure plate, wherein the first eccentric wheel is fixed to the rotating shaft of any supporting roller; the pressure plate is arranged at the end of the extrusion rod; the elastic connecting member connects the pressure plate and the outer wall of the second drug storage cartridge; wherein, when the first eccentric wheel rotates, it periodically moves the pressure plate and resets it through the elastic connecting member.

5. The drug application auxiliary device according to claim 3, characterized in that: A downwardly inclined wedge-shaped surface is provided on the top of the extrusion block on one side away from the extrusion rod, for guiding the ointment to flow toward the medicine outlet.

6. The drug application aid according to claim 1, characterized in that It also includes a scraper, which is arranged on the outside of the second medicine storage cylinder, with its bottom suspended and baffles arranged on both sides.

7. The drug application aid according to claim 6, characterized in that The outer wall of the second medicine storage cylinder is provided with a vertical downward sliding groove, and the end of the scraper is provided with a slider that is slidably engaged with the sliding groove. The slider is provided with a locking piece that can lock the slider in the sliding groove.

8. The drug application aid according to claim 6, characterized in that: The side wall of the scraper facing the second medicine storage cartridge is provided with a plurality of storage grooves arranged transversely side by side, and the width of the storage grooves decreases from bottom to top. The scraper is a hollow plate, and is provided with a through hole connecting the storage grooves with the inner cavity of the scraper, and the ointment can flow into the inner cavity of the scraper from the through hole.

9. The drug application aid according to claim 8, characterized in that: It also includes a recovery mechanism, which can transport the ointment collected in the scraper cavity back to the second drug storage cylinder.

10. The drug application aid according to claim 9, characterized in that: The recovery mechanism includes an elastic airbag, a first one-way valve, a second one-way valve and a second eccentric wheel. The elastic airbag is arranged outside the second medicine storage cartridge. The first one-way valve and the second one-way valve are elastically arranged at both ends of the elastic airbag relative to each other. The first one-way valve leads to the inside of the elastic airbag, and the second one-way valve leads to the outside of the elastic airbag. The first one-way valve is connected to the inner cavity of the scraper through an air pipe, and the second one-way valve is connected to the inner cavity of the second medicine storage cartridge through an air pipe. The second eccentric wheel is fixed on the rotating shaft of one of the support rollers on the same side and can rotate synchronously with the rotating shaft of the support roller. When the second eccentric wheel rotates, it can squeeze the elastic airbag in a gap.

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