Quantitative coating medicine applying device for chemotherapeutic phlebitis

Abstract

The invention discloses a quantitative coating medicine applying device for chemotherapeutic phlebitis, and relates to the field of chemotherapeutic phlebitis treatment supplies, the quantitative coating medicine applying device is configured to be a rotary contact type quantitative coating device based on quantitative pushing, the quantitative coating device comprises a medicine storage tube, a coating rolling brush and a clamping strip structure, the medicine storage tube is a pre-packaged sterile tube body filled with ointment for treating phlebitis, a pushing mechanism is arranged at the tail end of the medicine storage tube, a connecting boss is arranged at the head end of the medicine storage tube, a medicine outlet communicated with an inner cavity of the medicine storage tube is formed in the connecting boss, and a damping bayonet groove is formed in the outer side of the middle of the connecting boss; according to the quantitative coating medicine applying device, the pre-packaged sterile medicine storage pipe is matched with the piston negative pressure or gear screw type quantitative pushing mechanism to achieve accurate and quantitative conveying of ointment, and uniform coating is conducted in combination with the rotatable biological compatibility coating rolling brush with the micron-sized medicine permeating holes; and the problems of uncontrollable ointment dosage, uneven smearing and the like in the traditional manual smearing are avoided.

Description

Technical Field

[0001] This invention belongs to the field of treatment products for chemotherapy-induced phlebitis, specifically a quantitative application device for chemotherapy-induced phlebitis. Background Technology

[0002] Chemotherapy-induced phlebitis is a common complication in cancer patients undergoing chemotherapy. Most chemotherapy drugs are cytotoxic; during intravenous infusion, they irritate and damage vascular endothelial cells, leading to increased vascular permeability and local tissue inflammation, which in turn causes phlebitis. Patients typically experience symptoms such as redness, swelling, pain, and induration along the vein, severely impacting their quality of life and potentially leading to treatment interruption.

[0003] Currently, there are various treatment methods for chemotherapy-induced phlebitis in clinical practice, among which topical ointments are a commonly used and effective treatment. By applying ointments with anti-inflammatory, anti-swelling, and analgesic effects directly to the inflamed area, local blood circulation can be promoted, the inflammatory response reduced, and the patient's symptoms alleviated. However, in practice, there are many problems in the process of applying the ointments, which affect the treatment effect and the patient's experience.

[0004] In traditional application methods, healthcare professionals rely primarily on experience and manual operation to apply ointment to the affected area of ​​phlebitis. Due to the lack of precise measuring tools, it is difficult to accurately control the amount of ointment applied each time. Applying too little may fail to achieve an effective therapeutic concentration, affecting treatment outcomes; applying too much may result in wasted ointment, increasing the patient's financial burden, and may also cause ointment to spill and contaminate the surrounding skin.

[0005] When applying ointment manually, it is difficult to ensure that the ointment is evenly distributed at the site of phlebitis. Uneven application can result in some areas having too high or too low a concentration of ointment, affecting drug absorption and therapeutic efficacy. Moreover, uneven application may cause discomfort to the patient during subsequent activities due to the uneven distribution of the ointment.

[0006] During the application of ointments, the ointment is easily contaminated by the external environment, such as dust and bacteria in the air. At the same time, if application tools (such as cotton swabs, fingers, etc.) are reused or improperly cleaned, bacteria and other contaminants can be transferred to the patient's skin, increasing the risk of infection. Furthermore, improper handling of residual ointment on the application tools can also cause cross-contamination.

[0007] To address the aforementioned issues, some contactless drug delivery devices have been attempted in the existing technology, such as:

[0008] 1) Patent application CN219783509U discloses a contactless skin application and delivery device. This patent application includes a drug reservoir: a sleeve is fitted around the front of the reservoir, and a dispensing tube is fixedly connected to the front of the reservoir. A threaded sleeve is fixedly connected to the inner cavity of the sleeve, and the threaded sleeve is threaded onto the surface of the dispensing tube. A dispensing nozzle, which is a duckbill nozzle, is connected to the front end of the threaded sleeve. An opening and closing assembly is provided at the top of the sleeve. The opening and closing assembly includes a fixing block fixedly connected to the top of the sleeve, a rotating column rotatably connected to the inner cavity of the fixing block, and a pressure plate fixedly connected to the surface of the rotating column. This invention, through the combined use of the drug reservoir, sleeve, and dispensing nozzle, allows the ointment to be extruded in a thin film, eliminating the need for a separate application step. The opening and closing assembly simultaneously seals and cuts off the ointment, achieving contactless drug application and preventing cross-infection.

[0009] 2) Patent application CN212593051U discloses a packaging bag for facilitating the application of ointments by patients with skin diseases. This patent application includes a medicine storage compartment with a rotating component at its bottom. The rotating component and the medicine storage compartment are rotatably connected by a snap-fit ​​mechanism. An applicator is located inside the medicine storage compartment, and the applicator is movably connected to the medicine storage compartment by a snap-fit ​​mechanism. A sealing cap is located at the other end of the medicine storage compartment, and the sealing cap is connected to the medicine storage compartment by a threaded connection. This utility model features a reasonable structure and convenient use. Through the cooperation of the medicine storage compartment, rotating component, applicator, and sealing cap, the ointment can be applied to the infected skin without contact, thus avoiding cross-infection during use and improving safety.

[0010] While these contactless drug delivery devices have addressed the cross-infection issues inherent in traditional application methods to some extent, delivering ointment to the skin without direct contact between the application tool and the skin, they still have significant limitations, specifically: Firstly, these devices lack precise quantitative delivery capabilities, making it impossible to accurately control the amount of ointment delivered to the skin each time. Chemotherapy-induced phlebitis treatment demands high precision in ointment application; improper application directly impacts treatment efficacy. Secondly, they cannot guarantee uniform distribution of the ointment on the skin. Uneven application leads to poor drug absorption, affecting treatment effectiveness. Furthermore, existing delivery devices are not designed to fully consider the specific needs of chemotherapy-induced phlebitis application scenarios, such as precise marking of the application area and self-cleaning of the application tool to prevent cross-contamination between different patients. Summary of the Invention

[0011] The purpose of this invention is to provide a quantitative application device for chemotherapy-induced phlebitis, which solves the problems of inaccurate quantitative application, uneven application, easy contamination and cross-contamination, and lack of application area marking function in the prior art when applying chemotherapy-induced phlebitis ointment.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a quantitative drug application device for chemotherapy-induced phlebitis, wherein the quantitative drug application device is configured as a rotary contact quantitative application device based on quantitative pushing, the quantitative application device including a drug storage tube, an application roller brush, and a retaining strip structure, wherein:

[0013] The drug reservoir is a pre-packaged sterile tube filled with ointment for treating phlebitis. The tail end of the drug reservoir is equipped with a pushing mechanism, and the head end of the drug reservoir is equipped with a connecting boss. The connecting boss is equipped with a drug outlet that communicates with the inner cavity of the drug reservoir. The outer side of the middle part of the connecting boss is equipped with a damping groove.

[0014] The application roller is located inside the connecting boss and is connected to the connecting boss through the main rotating shaft. The application roller is made of biocompatible silicone or soft bristles, and the surface of the application roller has micron-sized penetration pores evenly distributed.

[0015] The clip structure is mounted on the outside of the connecting boss and is used to position and cover the coating roller. The clip structure includes a side support arm, a sliding clip plate, an adjusting gear, a rack, and a clip body. The side support arm has an L-shaped cross-section and a damping shaft that mates with the damping slot on its inner side. An adjusting groove is provided at the upper end of the side support arm. The sliding clip plate extends into the adjusting groove and slides in connection with it. A rack is provided at the bottom end of the sliding clip plate. An adjusting gear that meshes with the rack and drives the sliding clip plate to move up and down is provided inside the adjusting groove. The knob end of the adjusting gear extends out of the outside of the side support arm.

[0016] Preferably, the card strip body engages with the groove on the top of the sliding card plate, and the card strip body can cover the application roller brush by rotating and moving back and forth, reducing the exposure and contamination of the ointment.

[0017] Preferably, the rear end of the connecting boss is provided with a threaded post, and the front end of the medicine storage tube is provided with a threaded opening that mates with the threaded post, which facilitates the replacement of the entire connecting boss and the application roller.

[0018] Preferably, the delivery mechanism is a quantitative delivery module based on the piston negative pressure principle or a gear-screw type quantitative delivery module. The delivery mechanism can accurately control the amount of ointment delivered to the application roller each time, avoiding the problem of difficulty in controlling the amount of ointment used in traditional manual application, ensuring accurate dosage, guaranteeing therapeutic effect, and preventing ointment waste and spillage.

[0019] Preferably, the card strip body is a disposable skin-friendly silicone strip, the card strip body is provided with a row of micro pins, and the outer side of the card strip body is provided with an ink sac marking plate.

[0020] Preferably, the ink sac marking plate and the card strip body are connected by an elastic element. The ink sac marking plate contains an ink sac corresponding to a micro-needle. The ink sac marking plate can be used to mark the area of ​​phlebitis before treatment. During use, the ink sac marking plate is first placed against the skin, and the ink sac is punctured using the micro-needle. The erasable skin-marking ink inside the ink sac can then be used to mark the phlebitis area. The card strip body can be replaced to meet different usage needs. On one hand, marking the affected area with the ink sac marking plate allows medical staff to accurately locate the specific location of the phlebitis requiring ointment application, avoiding blind application and ensuring the ointment is precisely applied to the lesion, improving the targeted nature of drug treatment. On the other hand, it clearly defines the area to be covered with ointment, ensuring even coverage of the phlebitis area and allowing the drug to exert its full effect. Finally, marking the affected area also provides a comparative basis for subsequent efficacy evaluation.

[0021] Preferably, the inner side of the card strip body is provided with a flexible silicone scraper, which is used to scrape off the residual ointment on the surface of the application roller brush, keeping the roller brush clean and avoiding cross-contamination.

[0022] Preferably, a miniature electric drive auxiliary wheel is also hinged in the middle of the card strip body. This miniature electric drive auxiliary wheel can be unfolded to contact the application roller brush, and can drive the application roller brush to rotate during cleaning. The flexible silicone scraper on the inner side of the card strip body keeps the application roller brush self-cleaning.

[0023] Compared with existing technologies, this invention has the following beneficial effects: This invention achieves precise quantitative delivery of ointment through a pre-packaged sterile drug storage tube combined with a piston negative pressure or gear-screw type quantitative delivery mechanism. It utilizes a rotatable biocompatible application roller with micron-level penetration holes for uniform application, and a modularly designed card strip structure provides application protection and affected area marking functions. This allows for precise control of the dosage, ensures uniform ointment coverage, and improves operational hygiene and safety, avoiding problems such as uncontrolled ointment dosage, uneven application, cross-contamination, and inconvenience associated with traditional manual application. Specific technical effects include the following:

[0024] 1. By using a quantitative pushing mechanism based on the piston negative pressure principle or gear screw type, the amount of ointment pushed to the application roller each time is precisely controlled, ensuring accurate and stable dosage. This not only guarantees the therapeutic effect but also prevents ointment waste and spillage, solving the problem of difficulty in controlling the amount of ointment used in traditional manual application.

[0025] 2. The biocompatible silicone / soft bristle roller with micron-sized pores on its surface, combined with a rotating contact application method, achieves uniform release and coverage of the ointment on the affected area of ​​phlebitis, improving drug absorption efficiency and avoiding the problem of uneven ointment distribution caused by traditional application methods.

[0026] 3. With its detachable card strip structure (including a disposable skin-friendly silicone card strip body, a micro needle marking device, and an ink sac marking plate), it can accurately mark the phlebitis area and clarify the application range before treatment. It can also clean the residual ointment on the roller brush with a flexible silicone scraper, and achieve self-cleaning of the roller brush with the electric drive auxiliary wheel. At the same time, it supports quick replacement of application parts, which solves the problems of cross-contamination and poor hygiene and safety of traditional application tools. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 3 This is a partial enlarged structural schematic diagram of Embodiment 2 of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0033] In the picture:

[0034] 1. Drug storage tube; 101. Connecting boss; 102. Damping bayonet groove; 103. Pushing mechanism; 2. Application roller brush; 3. Carding strip structure; 301. Side support arm; 302. Sliding card plate; 303. Adjusting gear; 304. Rack; 305. Carding strip body; 306. Damping shaft; 4. Miniature pin; 5. Ink sac marking plate; 6. Flexible silicone scraper; 7. Miniature electric drive auxiliary wheel. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] As attached Figure 1 As shown:

[0037] Example 1: This invention provides a quantitative application device for chemotherapy-induced phlebitis. The quantitative application device is configured as a rotary contact quantitative application device based on quantitative pushing. The quantitative application device includes a drug storage tube 1 and an application roller 2. The drug storage tube 1 is a pre-packaged sterile tube filled with a phlebitis treatment ointment. The tail end of the drug storage tube 1 is provided with a pushing mechanism 103, and the head end of the drug storage tube 1 is provided with a connecting boss 101. The connecting boss 101 is provided with a drug outlet hole communicating with the inner cavity of the drug storage tube 1. The application roller 2 is located inside the connecting boss 101 and is connected to the connecting boss 101 through a main rotating shaft. The application roller 2 is made of biocompatible silicone or soft bristles, and the surface of the application roller 2 is uniformly distributed with micron-sized drug penetration pores.

[0038] 1. In one embodiment of the present invention, the rear end of the connecting boss 101 is provided with a threaded post, and the front end of the drug storage tube 1 is provided with a threaded opening that mates with the threaded post. This design allows the entire connecting boss 101 and the application roller 2 to be unscrewed from the drug storage tube 1 as a whole, facilitating the replacement of a new sterile application unit after use, or the replacement of a new drug storage tube 1 assembly after the ointment is used up, effectively avoiding cross-contamination and simplifying the operation process.

[0039] 2. In one embodiment of the present invention, the pushing mechanism 103 is a quantitative pushing module based on the piston negative pressure principle or a gear screw quantitative pushing module. The pushing mechanism 103 can accurately control the amount of ointment pushed to the application roller 2 each time, avoiding the problem of difficulty in controlling the amount of ointment used in traditional manual application, ensuring accurate dosage, guaranteeing therapeutic effect and preventing ointment waste and spillage.

[0040] Working Principle: In Example 1, a pre-packaged sterile drug reservoir 1, combined with a piston negative pressure or gear-screw type quantitative delivery mechanism 103, precisely delivers medication. This, combined with a rotatable biocompatible application roller 2 featuring micron-level penetration holes, ensures uniform and quantitative application of the ointment. The threaded connection structure facilitates quick replacement of the application components, balancing therapeutic efficacy, ease of operation, and hygiene safety. During use, the user operates the quantitative delivery mechanism 103 at the end of the drug reservoir 1 to precisely and quantitatively deliver the pre-packaged ointment from the sterile reservoir 1 through the dispensing hole of the connecting boss 101 to the application roller 2. Subsequently, the application roller 2 is used to roll and apply the ointment to the affected skin. The micron-level penetration holes on the roller surface ensure uniform release and coverage of the ointment.

[0041] As attached Figure 1 To be continued Figure 3 As shown:

[0042] Example 2: This invention provides a quantitative application device for chemotherapy-induced phlebitis. The quantitative application device is configured as a rotary contact quantitative application device based on quantitative pushing. The quantitative application device includes a drug storage tube 1, an application roller 2, and a retaining strip structure 3. The drug storage tube 1 is a pre-packaged sterile tube filled with an ointment for treating phlebitis. A pushing mechanism 103 is provided at the tail end of the drug storage tube 1, and a connecting boss 101 is provided at the head end of the drug storage tube 1. The connecting boss 101 has a drug outlet hole communicating with the inner cavity of the drug storage tube 1, and a damping retaining groove 102 is provided on the outer side of the middle part of the connecting boss 101. The application roller 2 is located inside the connecting boss 101 and is connected to the connecting boss 101 via a main rotating shaft. The application roller 2 is made of biocompatible silicone or soft bristles. The surface of the application roller 2 is uniformly distributed with micron-sized penetration holes; the locking strip structure 3 is mounted on the outside of the connecting boss 101 and is used to position and cover the application roller 2. The locking strip structure 3 includes a side support arm 301, a sliding locking plate 302, an adjusting gear 303, a rack 304 and a locking strip body 305. The side support arm 301 has an L-shaped cross section and a damping rotating shaft 306 that cooperates with the damping locking groove 102 on its inner side. An adjusting groove is opened at the upper end of the side support arm 301. The sliding locking plate 302 extends into the adjusting groove and slides in connection with the adjusting groove. A rack 304 is provided at the bottom end of the sliding locking plate 302. An adjusting gear 303 that meshes with the rack 304 and drives the sliding locking plate 302 to move up and down is provided on the inner side of the adjusting groove. The knob end of the adjusting gear 303 extends out of the side support arm 301.

[0043] 1. In one embodiment of the present invention, the card strip body 305 is engaged with the groove on the top of the sliding card plate 302, and the card strip body 305 can cover the application roller brush 2 by rotating and moving back and forth, thereby reducing the exposure and contamination of the ointment.

[0044] Working principle: Embodiment 2 is a further optimization based on Embodiment 1. By adding a clamping structure 3 consisting of a side support arm 301, a sliding clamping plate 302, an adjusting gear 303, a rack 304, and a clamping body 305, flexible positioning is achieved through the cooperation of a damping rotating shaft 306 and a damping clamping groove 102. The user can drive the rack 304 to move the sliding clamping plate 302 up and down by rotating the adjusting gear 303, thereby making the clamping body 305 engage with the groove on the top of the sliding clamping plate 302. By rotating and moving back and forth, the application roller brush 2 is flexibly covered, effectively reducing the exposure and contamination of the ointment, and improving the hygiene and preservation effect of the ointment during use. In use, the user first operates the quantitative pushing mechanism 103 at the end of the drug storage tube 1 to accurately and quantitatively deliver the ointment pre-packaged in the sterile drug storage tube 1 to the application roller brush 2 through the drug outlet of the connecting boss 101; then, the application roller brush 2 is used to roll and apply the ointment to the affected skin, and the micron-level penetration pores on the surface of the roller brush ensure that the ointment is evenly released and covered; finally, by adjusting the adjusting gear 303 of the card strip structure 3, the sliding card plate 302 is driven to move the card strip body 305 to flexibly cover the application roller brush 2, so as to achieve ointment application and protection.

[0045] As attached Figure 1 To be continued Figure 4 As shown:

[0046] Example 3: This invention provides a quantitative application device for chemotherapy-induced phlebitis. The quantitative application device is configured as a rotary contact quantitative application device based on quantitative pushing. The quantitative application device includes a drug storage tube 1, an application roller 2, and a retaining strip structure 3. The drug storage tube 1 is a pre-packaged sterile tube filled with an ointment for treating phlebitis. A pushing mechanism 103 is provided at the tail end of the drug storage tube 1, and a connecting boss 101 is provided at the head end of the drug storage tube 1. The connecting boss 101 has a drug outlet hole communicating with the inner cavity of the drug storage tube 1, and a damping retaining groove 102 is provided on the outer side of the middle part of the connecting boss 101. The application roller 2 is located inside the connecting boss 101 and is connected to the connecting boss 101 via a main rotating shaft. The application roller 2 is made of biocompatible silicone or soft bristles, and the surface of the application roller 2 has uniformly distributed micron-sized penetration pores. The retaining strip structure 3 is mounted on the connecting... The outer side of the boss 101 is used to position and cover the coating roller brush 2. The clip structure 3 includes a side support arm 301, a sliding clip plate 302, an adjusting gear 303, a rack 304, and a clip body 305. The side support arm 301 has an L-shaped cross-section and a damping shaft 306 that cooperates with the damping slot 102 on its inner side. An adjusting groove is opened at the upper end of the side support arm 301. The sliding clip plate 302 extends into the adjusting groove and slides in connection with the adjusting groove. A rack 304 is provided at the bottom end of the sliding clip plate 302. An adjusting gear 303 that meshes with the rack 304 and drives the sliding clip plate 302 to move up and down is provided on the inner side of the adjusting groove. The knob end of the adjusting gear 303 extends out of the side support arm 301. The clip body 305 is a disposable skin-friendly silicone strip. A row of miniature pins 4 is provided on the clip body 305. An ink sac marking plate 5 is provided on the outer side of the clip body 305.

[0047] 1. In one embodiment of the present invention, the ink sac marking plate 5 and the card strip body 305 are connected by an elastic element. The ink sac marking plate 5 has an ink sac inside that corresponds to the micro-needle 4. The ink sac marking plate 5 can be used to mark the area of ​​phlebitis before treatment. In use, the ink sac marking plate 5 is first pressed against the skin, and the ink sac is punctured using the micro-needle 4. At this time, the erasable skin-marking ink in the ink sac can be used to mark the phlebitis area. The card strip body 305 can be replaced to meet the usage needs. On the one hand, marking the affected area with the ink sac marking plate 5 allows medical staff to accurately locate the specific location of the phlebitis that needs to be treated with ointment, avoiding blind application and ensuring that the ointment is accurately applied to the lesion site, thus improving the targeting of drug treatment. On the other hand, it can clearly define the area to be applied with ointment, ensuring that the ointment is evenly covered on the phlebitis area, so that the drug can exert its full effect. Finally, marking the affected area can also provide a comparative basis for subsequent efficacy evaluation.

[0048] Working principle: Example 3 is a further optimization based on Example 2. It adopts a disposable skin-friendly silicone card strip body 305. When in use, the micro needle 4 punctures the ink sac by pressing against the skin, which can accurately mark the phlebitis lesion. This not only avoids blind application and improves the targeting of the ointment, but also clearly defines the application range and ensures uniform drug coverage. At the same time, it provides a comparative basis for efficacy evaluation.

[0049] As attached Figure 1 To be continued Figure 5 As shown:

[0050] Example 4: This example is basically the same as the previous example, except that a flexible silicone scraper 6 is provided on the inner side of the card strip body 305. The flexible silicone scraper 6 is used to scrape off the residual ointment on the surface of the application roller brush 2 to keep the roller brush clean and avoid cross-contamination.

[0051] 1. In one embodiment of the present invention, a miniature electric drive auxiliary wheel 7 is also hinged in the middle of the card strip body 305. The miniature electric drive auxiliary wheel 7 can be unfolded to contact the application roller brush 2 and can drive the application roller brush 2 to rotate during cleaning. The flexible silicone scraper 6 on the inner side of the card strip body 305 keeps the application roller brush 2 self-cleaning.

[0052] Working principle: In addition to the functions of precise quantitative drug administration, uniform application, ointment exposure protection, and affected area marking, the fourth embodiment uses a flexible silicone scraper 6 added to the inner side of the card strip body 305 to effectively scrape off residual ointment from the surface of the application roller brush 2, avoiding cross-contamination caused by residual ointment on the roller brush between different patients or different affected areas of the same patient. At the same time, the micro electric drive auxiliary wheel 7 hinged in the middle of the card strip body 305 can contact the application roller brush 2 after unfolding and drive it to rotate, which, together with the flexible silicone scraper 6, achieves self-cleaning of the roller brush, further enhancing the hygiene protection effect.

[0053] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quantitative application device for chemotherapy-induced phlebitis, the quantitative application device being configured as a rotary contact quantitative application device based on quantitative pushing, the quantitative application device comprising a drug storage tube (1), an application roller (2), and a retaining strip structure (3), characterized in that: The drug storage tube (1) is a pre-packaged sterile tube filled with a phlebitis treatment ointment. The tail end of the drug storage tube (1) is provided with a pushing mechanism (103), and the head end of the drug storage tube (1) is provided with a connecting boss (101). The connecting boss (101) is provided with a drug outlet hole that communicates with the inner cavity of the drug storage tube (1). The middle outer side of the connecting boss (101) is provided with a damping groove (102). The coating roller (2) is located inside the connecting boss (101) and is connected to the connecting boss (101) through the main rotating shaft. The coating roller (2) is made of biocompatible silicone or soft bristles. The coating roller (2) has micron-sized drug penetration pores evenly distributed on its surface. The clip structure (3) is mounted on the outside of the connecting boss (101) and is used to position and cover the coating roller brush (2). The clip structure (3) includes a side arm (301), a sliding clip plate (302), an adjusting gear (303), a rack (304) and a clip body (305). The side arm (301) has an L-shaped cross section and a damping shaft (306) that cooperates with the damping slot (102) is provided on its inner side. An adjusting groove is provided at the upper end of the side arm (301). The sliding clip plate (302) extends into the adjusting groove and slides in the adjusting groove. A rack (304) is provided at the bottom end of the sliding clip plate (302). An adjusting gear (303) that meshes with the rack (304) and drives the sliding clip plate (302) to move up and down is provided on the inner side of the adjusting groove. The knob end of the adjusting gear (303) extends out of the side arm (301).

2. The quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The card strip body (305) engages with the groove on the top of the sliding card plate (302).

3. The quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The connecting boss (101) has a threaded post at its rear end, and the medicine storage tube (1) has a threaded opening at its front end that mates with the threaded post.

4. The quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The pushing mechanism (103) is a quantitative pushing module based on the piston negative pressure principle or a gear screw quantitative pushing module.

5. A quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The card strip body (305) is a disposable skin-friendly silicone strip. A row of micro pins (4) is provided on the card strip body (305), and an ink sac marking plate (5) is provided on the outside of the card strip body (305).

6. A quantitative application device for chemotherapy-induced phlebitis according to claim 5, characterized in that: The ink sac marking plate (5) is connected to the card strip body (305) by an elastic element, and the ink sac marking plate (5) is provided with an ink sac corresponding to the micro pin (4).

7. A quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The card strip body (305) has a flexible silicone scraper (6) on its inner side.

8. A quantitative application device for chemotherapy-induced phlebitis according to claim 1, characterized in that: The card strip body (305) is also hinged with a miniature electric drive auxiliary wheel (7), which can contact the coating roller (2) when unfolded.

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