CN114010928A

CN114010928A - Cross infection preventing medicine feeding device for skin department

Info

Publication number: CN114010928A
Application number: CN202111246326.9A
Authority: CN
Inventors: 郑丕坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-02-08

Abstract

The invention discloses a cross infection prevention medicine feeding device for a dermatology department. The technical problem to be solved is to provide a cross infection prevention medicine feeding device for a skin department, which is convenient to extrude ointment for medicine feeding, automatically and uniformly daubs the ointment on the skin, automatically fixes and unlocks a medicine cylinder and prevents a stable part from being touched by mistake. The technical scheme of the invention is that the cross infection prevention medicine feeding device for the dermatology department comprises a shell, wherein one side of the lower part of the shell is connected with an ointment spray head; the lower part of the shell is provided with a charging component; the upper part of the shell is provided with an extrusion component. The cross-infection prevention medicine applying device for the dermatology department disclosed by the invention has the effects of conveniently and uniformly applying ointment on the skin, automatically fixing and unlocking the medicine cylinder and easily scraping residual ointment, reduces waste, is convenient for fixing the pressing rod and avoids mistakenly touching and extruding the ointment.

Description

Cross infection preventing medicine feeding device for skin department

Technical Field

The invention relates to a medicine feeding device, in particular to a cross infection prevention medicine feeding device for a dermatology department.

Background

The dermatology department belongs to the surgery department, mainly treats various skin diseases, and when treating related skin diseases, specific ointment is often required to be coated on the body part of a patient to help better solve the skin problems.

The existing medicine applying technology is basically a hand-tooth ointment, the ointment is manually extruded, the ointment is evenly applied to the skin through fingers, the operation is carried out, the ointment is extruded manually firstly, the operation is inconvenient, the ointment is applied through the fingers secondly, the operation is relatively labor-consuming, the ointment is stained and dyed by the two hands, when the medicine is applied, a medicine cylinder for containing the ointment is not fixed, the medicine application is influenced by easy movement, the ointment is remained on an ointment spray head after the medicine application is finished, the waste is caused, the medicine is applied through a device, and the ointment is extruded easily due to the fact that a part is touched by mistake.

Therefore, it is necessary to design a cross infection prevention medicine feeding device for skin departments, which is convenient for extruding ointment to feed medicine, automatically and uniformly smearing the ointment on the skin, automatically fixes and unlocks a medicine cylinder and prevents a stable part from being touched by mistake.

Disclosure of Invention

In order to overcome the defects in the prior art, the technical problems to be solved are as follows: the cross infection preventing medicine feeding device for the skin department is convenient to extrude ointment for medicine feeding, automatically and uniformly coats the ointment on the skin, automatically fixes and unlocks a medicine cylinder, and prevents a stable part from being touched by mistake.

In a first aspect, a cross-infection prevention drug delivery device for a dermatology department comprises: one side of the lower part of the shell is connected with an ointment spray head; the lower part of the shell is provided with a charging component; the upper part of the shell is provided with an extrusion component.

Further, the charge subassembly includes: the guide sleeve is connected between the two sides of the inner lower part of the shell; the middle part of the guide sleeve is connected with a sliding rod in a sliding way; one side of the slide bar is connected with a cartridge, and the lower part of the cartridge is provided with a through hole; the first spring is connected between the medicine cylinder and the shell; the guard plate, cartridge case one side is connected with the guard plate.

Further, the extrusion assembly comprises: a pressure lever is connected with one side of the upper part of the shell in a sliding way; the middle part of the pressure rod is connected with the fixed block; the second spring is connected between the fixed block and the shell and sleeved on the pressure rod; the lower part of the pressure lever is connected with a pressure plate; one side of the fixed block is connected with a sliding block in a sliding manner; the third spring is connected between the sliding block and the pressure rod; the upper part of the sliding block is connected with the contact rod; one side of the upper part in the shell is connected with a support frame; one side of the upper part of the support frame is connected with a ratchet bar, and the ratchet bar is matched with the sliding block; wedge pole, support frame upper portion one side symmetry is connected with the wedge pole, and the wedge pole is mutually supported with the contact lever.

Further, still include and scribble the subassembly, scribble the subassembly and include: a first sliding sleeve is symmetrically and slidably matched with one side of the bottom of the shell; the upper parts of the first sliding sleeves are connected with first stop blocks in a sliding manner, and the first stop blocks are matched with the shell; the fourth springs are connected between the first stop block and the first sliding sleeve; the fixing plate is connected between the lower parts of the first sliding sleeves; the rubber roller is rotatably connected between the two sides of the lower part of the fixing plate; one side of the inner lower part of the shell is connected with a first guide rod; the sliding frame is connected with the first guide rod in a sliding mode and matched with the first stop block and the sliding rod; and a fifth spring is connected between the sliding frame and the first guide rod and sleeved on the first guide rod.

Further, still including fixed subassembly, fixed subassembly includes: the fixing rod is connected with one side of the upper part of the medicine cylinder; the two sides of the middle part of the shell are both connected with a second sliding sleeve; the inner sides of the second sliding sleeves are connected with second stop blocks in a sliding manner, and the second stop blocks are matched with the fixed rods; the sixth spring is connected between the second stop block and the second sliding sleeve; one side of the upper part of the second stop block is connected with a special-shaped rod; the upper side inside the shell is symmetrically connected with a second guide rod; the sliding rods are connected to the second guide rods in a sliding mode and are matched with the special-shaped rods; one side of the upper part of the sliding rod is connected with a third stop block in a sliding manner, and the third stop block is matched with the fixed block; seventh springs are connected between the third stop blocks and the sliding rods; ejector rods are symmetrically connected to one side of the inner upper portion of the shell, and the ejector rods are matched with the third stop blocks.

Further, still including scraping the subassembly, scrape the subassembly including: the middle of the bottom of the shell is connected with a movable frame in a sliding way; the eighth spring is connected between the movable frame and the shell; a scraper is connected to one side of the lower part of the movable frame in a sliding way.

Furthermore, a locking assembly is also included and is arranged in the middle of the upper part of the shell.

Further, the locking assembly includes: the middle of the upper part of the shell is connected with a supporting rod; the support rod is rotatably connected with a rotating rod; the ball is connected to one side of the upper part of the rotating rod in a sliding manner, and the rotating rod, the ball and the pressure rod are matched with each other; and a ninth spring is connected between the ball and the rotating rod.

The invention has the advantages that: (1) according to the invention, the fixed plate, the first sliding sleeve and the first stop block are pushed to move upwards, the stop block is matched with the shell to fix the rubber roller, ointment falls on the rubber roller, and the rubber roller coats the ointment on skin, so that the effect of conveniently and uniformly coating the ointment on the skin is achieved; (2) according to the automatic fixing and unlocking device, the cartridge case drives the fixing rod to move rightwards to be matched with the second stop block to fix the cartridge case, the fixing block is matched with the third stop block to push the sliding rod to move upwards to be matched with the special-shaped rod to drive the second stop block to move upwards to release the fixing rod, and the cartridge case is reset leftwards to achieve the effect of automatically fixing and unlocking the cartridge case; (3) according to the invention, the movable frame and the scraper are pushed to move leftwards, so that the residual ointment on the ointment spray head is scraped, the effect of easily scraping the residual ointment is achieved, and the waste is reduced; (4) according to the invention, the rotating rod and the ball are pushed to rotate clockwise, the ball is matched with the pressure rod, and the rotating rod is fixed, so that the pressure rod is fixed, the effect of conveniently fixing the pressure rod is achieved, and the phenomenon of extruding ointment by mistake is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a first part of the present invention.

Fig. 3 is a perspective view of the second part of the present invention.

Figure 4 is a schematic view of the installation of the charge assembly of the present invention.

FIG. 5 is a schematic view of the installation of the compression assembly of the present invention.

Fig. 6 is a schematic perspective view of a portion of the extrusion assembly of the present invention.

Fig. 7 is a schematic view of the installation of the applicator assembly of the present invention.

Fig. 8 is a schematic perspective view of a portion of the applicator assembly of the present invention.

Fig. 9 is a schematic view of the installation of the applicator assembly and housing of the present invention.

Figure 10 is a schematic perspective view of a portion of the smearing assembly and the charge assembly of the invention.

Fig. 11 is a schematic view of the installation of the fixing assembly of the present invention.

Fig. 12 is an enlarged view of portion a of the present invention.

Fig. 13 is a partial perspective view of the fastening assembly of the present invention.

Fig. 14 is a schematic view of the installation of the doctoring assembly of the present invention.

Fig. 15 is a schematic view of the installation of the locking assembly of the present invention.

Fig. 16 is an enlarged view of part B of the present invention.

Labeled as: 1-shell, 2-ointment spray head, 3-medicine charging component, 301-guide sleeve, 302-sliding rod, 303-medicine cylinder, 304-protective plate, 305-first spring, 4-extrusion component, 401-pressing plate, 402-second spring, 403-pressing rod, 404-sliding block, 405-third spring, 406-contact rod, 407-supporting frame, 408-ratchet bar, 409-wedge rod, 410-fixed block, 5-smearing component, 501-fixed plate, 502-rubber roller, 503-first sliding sleeve, 504-first stop block, 505-fourth spring, 506-first guide rod, 507-sliding frame, 508-fifth spring, 6-fixing component, 601-fixed rod, 602-second sliding sleeve, 603-second stop, 604-sixth spring, 605-second guide rod, 606-sliding rod, 607-third stop, 608-seventh spring, 609-top rod, 610-profile rod, 7-scraping component, 701-movable frame, 702-scraper, 703-eighth spring, 8-locking component, 801-supporting rod, 802-rotating rod, 803-ball, 804-ninth spring.

Detailed Description

The invention is described in further detail below with reference to the drawings and the detailed description, but the invention is not limited to the scope of protection and application.

Example 1

As shown in fig. 1 to 7, the embodiment discloses a cross infection prevention medicine feeding device for a dermatology department, which comprises a shell 1, an ointment spray nozzle 2, a medicine charging assembly 3 and an extrusion assembly 4, wherein the ointment spray nozzle 2 is connected to the left side of the lower part of the shell 1, the medicine charging assembly 3 is arranged on the lower part of the shell 1, and the extrusion assembly 4 is arranged on the upper part of the shell 1.

The medicine charging assembly 3 comprises a guide sleeve 301, a sliding rod 302, a medicine box 303, a protection plate 304 and a first spring 305, the guide sleeve 301 is connected between the front side and the rear side of the inner lower portion of the shell 1, the sliding rod 302 is connected to the middle of the guide sleeve 301 in a sliding mode, the medicine box 303 is connected to the left side of the sliding rod 302, a through hole is formed in the lower portion of the medicine box 303, the first spring 305 is connected between the medicine box 303 and the shell 1, and the protection plate 304 is connected to the left side of the medicine box 303.

The extrusion assembly 4 comprises a pressing plate 401, a second spring 402, a pressing rod 403, a sliding block 404, a third spring 405, a contact rod 406, a supporting frame 407, a ratchet bar 408, a wedge-shaped rod 409 and a fixed block 410, the left side of the upper part of the shell 1 is slidably connected with a pressing rod 403, the middle part of the pressing rod 403 is connected with a fixing block 410, a second spring 402 is connected between the fixing block 410 and the shell 1, the second spring 402 is sleeved on the pressing rod 403, the lower part of the pressing rod 403 is connected with a pressing plate 401, the right side of the fixing block 410 is slidably connected with a sliding block 404, a third spring 405 is connected between the sliding block 404 and the pressing rod 403, the upper part of the sliding block 404 is connected with a contact rod 406, the right side of the upper part in the shell 1 is connected with a supporting frame 407, the right side of the upper part of the supporting frame 407 is connected with a ratchet bar 408, the ratchet bar 408 is matched with the sliding block 404, the left side of the upper part of the supporting frame 407 is symmetrically connected with a wedge-shaped rod 409 in a front-back mode, and the wedge-shaped rod 409 is matched with the contact rod 406.

When a user needs to apply medicine, the user pushes the protection plate 304 with hands in the original state, the first spring 305 is in a compressed state, the protection plate 304 is released, the medicine cylinder 303 and the protection plate 304 are pushed to move leftwards under the action of the first spring 305, the medicine paste is poured into the medicine cylinder 303 after the medicine cylinder 303 moves out of the shell 1, then the protection plate 304 and the medicine cylinder 303 are pushed to move rightwards again, the through hole in the lower part of the medicine cylinder 303 is aligned with the medicine paste spray head 2 again, the pressing rod 403 is pushed to move downwards, the fixing block 410 and the pressing plate 401 are driven to move downwards, the second spring 402 is compressed, the sliding block 404 and the contact rod 406 are driven to move downwards, the sliding block 404 is driven to move leftwards after contacting with the tooth block on the ratchet bar 408 and is pushed to move leftwards, the third spring 405 is compressed, after the sliding block 404 moves through the tooth block, the sliding block 404 is driven to move rightwards under the action of the third spring 405, so that the sliding block 404 is blocked by the tooth block of the ratchet bar 408, thus, the fixing block 410, the pressure rod 403 and the pressure plate 401 are fixed, namely after the pressure plate 401 moves to a proper position and can extrude ointment, the ointment can be fixed, after the pressure plate 401 presses the ointment downwards, the ointment flows out through a through hole at the lower part of the medicine cylinder 303 and is sprayed out on the skin of a user by the ointment spray head 2, the medicine application is completed, along with the gradual application of the ointment, the pressure rod 403, the fixing block 410, the pressure plate 401, the sliding block 404 and the contact rod 406 continuously move downwards, when the ointment is completely applied, the sliding block 404 moves to the lowest side tooth block of the ratchet bar 408 and is pushed to move leftwards, then the contact rod 406 is written into the wedge rod 409 and moves rightwards, the sliding block 404 is driven to move rightwards and is restored to the original state, at the moment, under the action of the second spring 402, the fixing block 410, the pressure rod 403 and the pressure plate 401 are pushed upwards to drive the sliding block 404 and the contact rod 406 to move upwards, and the contact rod 406 moves to the wedge rod 409, will be pushed and move left, drive sliding block 404 and move left, third spring 405 is compressed, contact lever 406 moves up and is kept away from wedge rod 409 after, under the effect of third spring 405, pushes sliding block 404 and contact lever 406 and moves right, resumes to the original state, so reciprocate, reaches the effect that conveniently extrudes the ointment for a long time and accomplishes the medicine loading.

Example 2

As shown in fig. 1, 2, 8-16, in some embodiments, the smearing assembly 5 is further included, the smearing assembly 5 includes a fixing plate 501, a rubber roller 502, a first sliding sleeve 503, a first stop 504, a fourth spring 505, a first guide rod 506, a sliding frame 507 and a fifth spring 508, the first sliding sleeve 503 is symmetrically and slidably fitted at the front and back of the left side of the bottom of the housing 1, the first stop 504 is slidably coupled to the upper portion of the first sliding sleeve 503, the first stop 504 is fitted to the housing 1, the fourth spring 505 is coupled between the first stop 504 and the first sliding sleeve 503, the fixing plate 501 is coupled to the lower portion of the first sliding sleeve 503, the rubber roller 502 is rotatably coupled between the front and back sides of the lower portion of the fixing plate 501, the first guide rod 506 is coupled to the right side of the lower portion of the housing 1, the sliding frame 507 is slidably coupled to the first stop 504 and the sliding rod 302, a fifth spring 508 is connected between the sliding frame 507 and the first guide bar 506, and the fifth spring 508 is sleeved on the first guide bar 506.

The fixing plate 501 is pushed to move upwards to drive the first sliding sleeve 503, the first stop block 504 and the rubber roller 502 to move upwards, the first stop block 504 is pushed by the shell 1 to move outwards, the fourth spring 505 is compressed, after the first stop block 504 moves through the shell 1, the first stop block 504 is pushed to move inwards under the action of the fourth spring 505, the shell 1 stops the first stop block 504, so that the first sliding sleeve 503, the fixing plate 501 and the rubber roller 502 are fixed, ointment is sprayed out of the ointment spray head 2 on the rubber roller 502, the pushing device moves to drive the rubber roller 502 to roll on the skin of a user, the ointment is uniformly applied on the skin, after all the ointment are used, the protection plate 304 is loosened, the medicine cylinder 303 moves leftwards to reset to drive the sliding rod 302 to move leftwards to drive the sliding frame 507 to move leftwards, the fifth spring 508 is compressed, the sliding frame 507 moves to contact with the first stop block 504, the first stopper 504 is pushed to move outwards, the fourth spring 505 is compressed, the fixing plate 501 can be pulled to move downwards at the moment, the first sliding sleeve 503 is driven, the first stopper 504 and the rubber roller 502 move downwards, after the first stopper 504 is far away from the shell 1, the first stopper 504 is pushed to move inwards under the action of the fourth spring 505, the original state is recovered, then the protection plate 304 and the medicine cylinder 303 are pushed to move right again, the sliding rod 302 is driven to move right to be far away from the sliding frame 507, under the action of the fifth spring 508, the sliding frame 507 is pushed to move right to recover to the original state, the reciprocating is carried out, and the effect of uniformly smearing ointment on the skin is achieved conveniently.

The medicine taking device also comprises a fixing component 6, the fixing component 6 comprises a fixing rod 601, a second sliding sleeve 602, a second stop block 603, a sixth spring 604, a second guide rod 605, a sliding rod 606, a third stop block 607, a seventh spring 608, a top rod 609 and a special-shaped rod 610, the fixing rod 601 is connected to the right side of the upper part of the medicine cylinder 303, the second sliding sleeve 602 is connected to the front and back sides of the middle part of the shell 1, the second stop block 603 is connected to the inner side of the second sliding sleeve 602 in a sliding manner, the second stop block 603 is matched with the fixing rod 601, the sixth spring 604 is connected between the second stop block 603 and the second sliding sleeve 602, the special-shaped rod 610 is connected to the right side of the upper part of the second stop block 603, the second guide rod 605 is symmetrically connected to the front and back of the upper side of the inside of the shell 1, the sliding rod 606 is connected to the second guide rod 605 in a sliding manner, the sliding rod 606 is matched with the special-shaped rod 610, the third stop block 607 is connected to the left side of the upper part of the sliding rod 606 in a sliding manner, the third stop block 607 is matched with the fixing block 410, seventh springs 608 are connected between the third stop blocks 607 and the sliding rods 606, push rods 609 are symmetrically connected to the left side of the upper portion in the shell 1 in a front-back mode, and the push rods 609 are matched with the third stop blocks 607.

When the medicine cylinder 303 moves rightwards, the fixing rod 601 is driven to move rightwards, after the fixing rod 601 moves to be contacted with the second stop 603, the second stop 603 is pushed to move upwards, the sixth spring 604 is compressed, after the fixing rod 601 moves through the second stop 603, the second stop 603 is pushed to move downwards under the action of the sixth spring 604, so that the second stop 603 stops the fixing rod 601, the medicine cylinder 303 and the protection plate 304 are fixed, when ointment is used, the fixing block 410 moves downwards to be contacted with the third stop 607, the third stop 607 is pushed to move rightwards, the seventh spring 608 is compressed, after the fixing plate 501 moves through the third stop 607, the third stop 607 is pushed to move leftwards under the action of the seventh spring 608, after all ointment is used, the fixing block 410 moves upwards to drive the third stop 607 and the sliding rod 606 to move upwards, the sliding rod 606 moves to be contacted with the special-shaped rod 610, will promote special-shaped pole 610 upward movement, drive second dog 603 upward movement and keep away from dead lever 601, guard plate 304, cartridge case 303 and dead lever 601 move left and reset, and third dog 607 moves to and contacts behind ejector pin 609, will be promoted again and move right for third dog 607 keeps away from fixed block 410, under the action of gravity, slide bar 606 and third dog 607 move down, keep away from ejector pin 609 and special-shaped pole 610, third dog 607 moves left and resets, special-shaped pole 610 and second dog 603 move down and reset, resume to original state, so reciprocal, reach the effect of automatic fixation and unblock cartridge case 303.

The scraper assembly 7 is further included, the scraper assembly 7 comprises a movable frame 701, a scraper 702 and an eighth spring 703, the movable frame 701 is connected to the middle of the bottom of the shell 1 in a sliding manner, the eighth spring 703 is connected between the movable frame 701 and the shell 1, and the scraper 702 is connected to the left side of the lower portion of the movable frame 701 in a sliding manner.

The scraper 702 is pushed into the left side of the lower portion of the movable frame 701, then the movable frame 701 and the scraper 702 are pushed to move leftwards, the eighth spring 703 is compressed, the scraper 702 scrapes off residual ointment on the ointment spray head 2, the movable frame 701 is loosened, the movable frame 701 and the scraper 702 are pushed to move rightwards under the action of the eighth spring 703, then the scraper 702 is taken down again, the original state is restored, the effect of easily scraping off the residual ointment is achieved, and waste is reduced.

The locking device further comprises a locking assembly 8, wherein the locking assembly 8 comprises a supporting rod 801, a rotating rod 802, a ball 803 and a ninth spring 804, the supporting rod 801 is connected to the middle of the upper portion of the shell 1, the rotating rod 802 is rotatably connected to the supporting rod 801, the ball 803 is slidably connected to the left side of the upper portion of the rotating rod 802, the rotating rod 802 and the ball 803 are matched with the pressing rod 403, and the ninth spring 804 is connected between the ball 803 and the rotating rod 802.

When ointment needs to be extruded, the rotating rod 802 is pushed to rotate anticlockwise to drive the ball 803 to rotate anticlockwise, the ball 803 is pushed to move downwards, the ninth spring 804 is compressed, the ball 803 is pushed to move upwards under the action of the ninth spring 804 after rotating to be away from the pressing rod 403, the pressing rod 403 can be pushed to move downwards at the moment to extrude the ointment, the rotating rod 802 and the ball 803 are pushed to rotate clockwise after the pressing rod 403 moves to a proper position, the ball 803 is pushed to move downwards after rotating to be in contact with the pressing rod 403, the ball 803 is reset after rotating to a normal position, the rotating rod 802 is fixed, the pressing rod is fixed, the ointment cannot be extruded at the moment, the operation is repeated, the effect of conveniently fixing the pressing rod 403 is achieved, and the ointment 403 is prevented from being extruded by mistake.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a dermatology department is with preventing medicine feeding device of cross infection which characterized in that: comprises the following steps: the ointment spraying device comprises a shell (1), wherein one side of the lower part of the shell (1) is connected with an ointment spraying head (2); the lower part of the shell (1) is provided with a powder charging component (3); the upper part of the shell (1) is provided with an extrusion component (4).

2. The dermatologic office cross-infection prevention drug delivery device of claim 1, wherein: the charging component (3) comprises: the guide sleeve (301), the guide sleeve (301) is connected between the two sides of the inner lower part of the shell (1); the middle part of the sliding rod (302) and the guide sleeve (301) is connected with the sliding rod (302) in a sliding way; the medicine box (303), one side of the slide bar (302) is connected with the medicine box (303), and the lower part of the medicine box (303) is provided with a through hole; a first spring (305), wherein the first spring (305) is connected between the medicine cylinder (303) and the shell (1); the protection plate (304) is connected to one side of the medicine cylinder (303).

3. The dermatologic office cross-infection prevention drug delivery device of claim 2, wherein: the extrusion assembly (4) comprises: a pressure lever (403), wherein one side of the upper part of the shell (1) is connected with the pressure lever (403) in a sliding way; the middle part of the pressure lever (403) is connected with the fixed block (410); the second spring (402) is connected between the fixed block (410) and the shell (1), and the second spring (402) is sleeved on the pressing rod (403); the lower part of the pressure lever (403) is connected with the pressure plate (401); one side of the fixed block (410) is connected with the sliding block (404) in a sliding manner; a third spring (405), wherein the third spring (405) is connected between the sliding block (404) and the pressure lever (403); the upper part of the sliding block (404) is connected with the contact rod (406); a support frame (407), wherein one side of the inner upper part of the shell (1) is connected with the support frame (407); one side of the upper part of the support frame (407) is connected with a ratchet bar (408), and the ratchet bar (408) is matched with the sliding block (404); wedge pole (409), support frame (407) upper portion one side symmetry is connected with wedge pole (409), and wedge pole (409) and contact lever (406) are mutually supported.

4. The dermatologic office cross-infection prevention drug delivery device of claim 3, wherein: still including scribbling subassembly (5), scribble subassembly (5) including: a first sliding sleeve (503), wherein one side of the bottom of the shell (1) is symmetrically and slidably provided with the first sliding sleeve (503); the upper parts of the first sliding sleeves (503) are both connected with the first stop blocks (504) in a sliding manner, and the first stop blocks (504) are matched with the shell (1); the fourth spring (505) is connected between the first stop block (504) and the first sliding sleeve (503); the fixing plate (501) is connected between the lower parts of the first sliding sleeves (503); the rubber roller (502) is rotatably connected between the two sides of the lower part of the fixing plate (501); a first guide rod (506), wherein one side of the inner lower part of the shell (1) is connected with the first guide rod (506); a sliding frame (507), the sliding frame (507) is connected on the first guide rod (506) in a sliding way, and the sliding frame (507) is matched with the first stop block (504) and the sliding rod (302); and a fifth spring (508), wherein the fifth spring (508) is connected between the sliding frame (507) and the first guide rod (506), and the fifth spring (508) is sleeved on the first guide rod (506).

5. The dermatologic office cross-infection prevention drug delivery device of claim 4, wherein: still including fixed subassembly (6), fixed subassembly (6) including: a fixing rod (601), wherein one side of the upper part of the medicine cylinder (303) is connected with the fixing rod (601); the two sides of the middle part of the shell (1) are both connected with a second sliding sleeve (602); the inner sides of the second sliding sleeves (602) are both connected with second stop blocks (603) in a sliding manner, and the second stop blocks (603) are matched with the fixed rods (601); the sixth spring (604) is connected between the second stop block (603) and the second sliding sleeve (602); a special-shaped rod (610), wherein one side of the upper part of the second stop block (603) is connected with the special-shaped rod (610); the upper side inside the shell (1) is symmetrically connected with a second guide rod (605); the sliding rods (606) are connected to the second guide rod (605) in a sliding mode, and the sliding rods (606) are matched with the special-shaped rod (610); one side of the upper part of the sliding rod (606) is connected with a third stop block (607) in a sliding manner, and the third stop block (607) is matched with the fixed block (410); the seventh spring (608), the seventh spring (608) is connected between the third stop block (607) and the sliding rod (606); ejector rods (609), wherein one side of the inner upper part of the shell (1) is symmetrically connected with the ejector rods (609), and the ejector rods (609) are matched with the third stop block (607).

6. The dermatologic office cross-infection prevention drug delivery device of claim 5, wherein: still including scraping off subassembly (7), scrape off subassembly (7) including: the middle of the bottom of the shell (1) is connected with a movable frame (701) in a sliding manner; an eighth spring (703), wherein the eighth spring (703) is connected between the movable frame (701) and the shell (1); the scraper (702) is connected with one side of the lower part of the movable frame (701) in a sliding way.

7. The dermatologic office cross-infection prevention drug delivery device of claim 6, wherein: the locking device also comprises a locking component (8), wherein the locking component (8) is arranged in the middle of the upper part of the shell (1).

8. The dermatologic office cross-infection prevention drug delivery device of claim 7, wherein: the locking assembly (8) comprises: the middle of the upper part of the shell (1) is connected with a supporting rod (801); the rotating rod (802) is rotatably connected to the supporting rod (801); the ball (803) is connected to one side of the upper part of the rotating rod (802) in a sliding manner, and the rotating rod (802), the ball (803) and the pressing rod (403) are matched with each other; and a ninth spring (804), wherein the ninth spring (804) is connected between the ball (803) and the rotating rod (802).