Local drug delivery device for herpes zoster sequela neuralgia

Abstract

The invention discloses a postherpetic neuralgia local drug delivery device which comprises an operation platform, and a plurality of supporting columns are arranged at the bottom of the operation platform. A driving device, a local medicine injection device, an injector push rod end fixing device, an injector shell fixing device and an injector shell pressing and fixing device are arranged on the operating platform, the driving device comprises a driving motor and a rotating lead screw, and the output end of the driving motor is connected to the end of the rotating lead screw; the motor is used for driving the rotating screw rod to work; and the syringe shell is fixed and pressed in the process of dosing the affected part after herpes zoster, so that the stability of the dosing device in the dosing process is improved. In the process of dosing the affected parts of the postherpetic nerves of a patient, multiple groups of medicine injectors and injection heads can be fixed at the same time to perform dosing on multiple affected parts of the patient, so that the dosing efficiency is improved, and the problems of low efficiency and non-uniform smearing force existing in manual dosing are solved.

Description

Technical Field

[0001] The invention relates to the technical field of drug delivery devices for herpes zoster virus, in particular to a local drug delivery device for postherpetic neuralgia. Background Art

[0002] Postherpetic neuralgia is the pain left over from herpes zoster, which is a kind of sequelae. Clinically, it is considered that after the rash of herpes zoster subsides, the local skin still has pain and discomfort, and the pain lasting for more than 1 month is called postherpetic neuralgia, or PHN. It manifests as local paroxysmal or persistent burning pain, tingling, throbbing pain, and knife-cutting pain. In severe cases, it affects rest, sleep, mental state, etc. When treating postherpetic neuralgia, it is generally sprayed with topical drugs to destroy the living environment of the herpes virus, thereby eliminating the virus.

[0003] The drug delivery devices for herpes zoster in the prior art generally have the following disadvantages:

[0004] 1. In the prior art, spray is usually used to spray the affected part of the patient's postherpetic nerve. After spraying, the drug can only stay on the patient's skin surface. It is difficult for the drug to penetrate deep into the lesion, and inflammatory substances are difficult to be discharged from the body. It is difficult to cure the disease. The poor treatment effect is not conducive to the recovery of symptoms such as herpes zoster.

[0005] 2. In the prior art, the drug application is usually carried out by hand on the affected part of the patient's postherpetic nerve. It is difficult to control the application strength during manual application, and the application efficiency is poor, which is prone to infection and other problems. Summary of the invention

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a local drug delivery device for postherpetic neuralgia, comprising an operating platform, a plurality of support columns are arranged at the bottom of the operating platform, a driving device, a local drug injection device, a syringe push rod end fixing device, a syringe housing fixing device and a syringe housing pressing fixing device are arranged on the operating platform, the driving device comprises a driving motor and a rotating screw, the output end of the driving motor is connected to the end of the rotating screw to drive the rotating screw to work;

[0007] The local drug injection device comprises a drug syringe and an injection head, wherein the injection head is detachably connected to the end of the drug syringe, a plurality of needle-shaped drug delivery parts are arranged at the end of the injection head, and a plurality of clamping parts are arranged on the outer peripheral surface thereof for fixing the disinfection cotton;

[0008] The syringe push rod end fixing device comprises a clamping fixing plate 1 and a push rod pushing plate, a plurality of engaging grooves are arranged on the clamping fixing plate 1, the clamping fixing plate 1 and the push rod pushing plate are connected and fixed by screws, the push rod pushing plate is connected to the rotating screw, guide holes are arranged on both sides of the push rod pushing plate, and guide shafts are inserted into the guide holes on the push rod fixing plate;

[0009] The syringe housing fixing device comprises a U-shaped placement plate and a clamping and fixing plate 2 for clamping the end of the syringe housing. The U-shaped placement plate and the clamping and fixing plate 2 are connected and fixed by screws. The bottom end of the U-shaped placement plate is fixedly mounted on the operating platform by screws. A plurality of syringe housing placement grooves 1 are arranged on the top ends of the two side plates of the U-shaped placement plate, and a syringe housing placement groove 2 is arranged on the top end of the clamping and fixing plate 2. The rotating screw is driven by a driving motor to work, and the rotating screw drives the push rod to push the plate to move, so that the medicine inside the medicine syringe is injected into the patient's skin.

[0010] Furthermore, the syringe housing clamping and fixing device includes a clamping plate, a height adjustment rod is arranged at the bottom end of the clamping plate, the bottom end of the height adjustment rod is fixedly connected to the operating platform, and the height adjustment is achieved through a compression spring rod.

[0011] Furthermore, a fixed end plate is provided on the operating platform, the outer end of the guide shaft is connected to the fixed end plate, and the inner end thereof is connected to the U-shaped placement plate, and the two guide shafts are distributed in a symmetrical structure on both sides of the rotating screw.

[0012] The advantages of the invention compared with the prior art are:

[0013] The present invention adds a driving device, a local drug injection device, a syringe push rod end fixing device, a syringe housing fixing device and a syringe housing compression fixing device on the operating platform. The driving motor can drive the rotating screw to work, thereby driving the clamping fixing plate and the push rod pushing plate to move back and forth, pushing the push rod on the syringe to move back and forth, so that the drug inside the syringe is pushed out to the patient's skin. In the process of administering medicine to the affected part of the patient's postherpetic neuralgia, multiple groups of drug syringes and injection heads can be fixed at the same time, and medication can be performed on multiple affected parts of the patient at the same time, thereby improving the local drug administration efficiency of the postherpetic neuralgia and solving the problems of low efficiency and uneven application strength of manual drug administration.

[0014] The present invention adopts structures such as a syringe housing fixing device and a syringe housing compression fixing device to fix and compress the syringe housing during medication to the affected area after herpes zoster, thereby improving the stability of the medication device during medication.

[0015] The present invention adopts a method of providing a plurality of needle-shaped drug delivery parts at the end of the injection head, and a plurality of snap-fit ​​parts on the outer peripheral surface thereof for fixing disinfection cotton. When administering drugs to the affected part after herpes zoster, the needle-shaped drug delivery parts can pierce the patient's surface skin, thereby injecting the drug into the affected part after herpes zoster, thereby squeezing out the inflammation of the affected part after herpes zoster, making the drug delivery effect of the whole device better. The punctured blisters are suitable for administering methylene blue in the acute stage, which is conducive to the rapid recovery of patients. Through the arrangement of the above structure, the disinfection cotton can also be fixed in the snap-fit ​​parts for disinfection of the affected part after herpes zoster, which is convenient and practical.

[0016] The present invention adopts a driving device to control the drug delivery device, and the driving device includes a driving motor and a rotating screw. By controlling the rotating screw to rotate by the driving motor, the entire local drug delivery device for postherpetic neuralgia can be automatically delivered, freeing the hands of medical personnel and providing convenience for medical personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of a local drug delivery device for postherpetic neuralgia of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 2 The structure of a local drug delivery device for postherpetic neuralgia of the present invention is shown in FIG. Figure 2 ;

[0019] Figure 3 The exploded view of the local drug delivery device for postherpetic neuralgia of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 4 The exploded view of the local drug delivery device for postherpetic neuralgia of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 5 A partial schematic diagram of a local drug delivery device for postherpetic neuralgia according to the present invention Figure 1 ;

[0022] Figure 6 A partial schematic diagram of a local drug delivery device for postherpetic neuralgia according to the present invention Figure 2 ;

[0023] Figure 7 It is a structural schematic diagram of a syringe push rod end fixing device;

[0024] Figure 8 is a schematic diagram of the structure of the syringe housing fixing device;

[0025] Fig. 9 An exploded schematic diagram of a local drug injection device.

[0026] Among them, 1. operating platform, 2. support column, 3. drive motor, 4. rotating screw, 5. drug syringe, 6. injection head, 7. needle-shaped drug delivery part, 8. clamping and fixing plate 1, 9. push rod pushing plate, 10. engaging groove body, 11. guide hole, 12. guide shaft, 13. U-shaped placement plate, 14. clamping and fixing plate 2, 15. height adjustment rod, 16. syringe housing placement groove 2, 17. compression spring rod, 18. fixed end plate, 19. push rod, 20. piston, 21. syringe housing, 22. threaded connecting pipe, 23. tilt control panel, 24. control button, 25. fixed block, 26. limiting protrusion, 27. central drug delivery tube, 28. engaging component, 29. threaded connecting pipe, 30. drive motor fixing plate, 31. clamping plate. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] The present invention is described in detail with reference to the accompanying drawings.

[0029] The present invention provides a local drug delivery device for postherpetic neuralgia in a specific implementation, comprising an operating platform 1, a plurality of support columns 2 are arranged at the bottom of the operating platform 1, a driving device, a local drug injection device (such as Fig. 9 ), syringe plunger end fixing device (such as Figure 7 ), syringe housing fixing device (such as Figure 8 ) and the syringe housing pressing and fixing device, the driving device includes a driving motor 3 and a rotating screw 4, the output end of the driving motor 3 is connected to the end of the rotating screw 4 to drive the rotating screw 4 to work;

[0030] The local drug injection device comprises a drug syringe 5 and an injection head 6, wherein the injection head 6 is detachably connected to the end of the drug syringe 5, and a plurality of needle-shaped drug delivery parts 7 are arranged at the end of the injection head 6, and a plurality of engaging parts 28 are arranged on the outer peripheral surface thereof for fixing the disinfection cotton;

[0031] The syringe push rod end fixing device comprises a clamping fixing plate 8 and a push rod pushing plate 9, a plurality of engaging grooves 10 are arranged on the clamping fixing plate 8, the clamping fixing plate 8 and the push rod pushing plate 9 are connected and fixed by screws, the push rod pushing plate 9 is connected to the rotating screw 4, guide holes 11 are arranged on both sides of the push rod pushing plate 9, and guide shafts 12 are inserted into the guide holes 11 on the push rod fixing plate 9;

[0032] The syringe housing fixing device includes a U-shaped placement plate 13 and a clamping and fixing plate 14 for clamping the end of the syringe housing. The U-shaped placement plate 13 and the clamping and fixing plate 14 are connected and fixed by screws. The bottom end of the U-shaped placement plate 13 is fixedly mounted on the operating platform 1 by screws. A plurality of syringe housing placement grooves 15 are arranged at the top ends of the two side plates of the U-shaped placement plate 13, and a syringe housing placement groove 16 is arranged at the top end of the clamping and fixing plate 14. The rotating screw 4 is driven to work by the driving motor 3, and the rotating screw 4 rotates to drive the push rod to push the plate 9 to move, so that the medicine inside the medicine syringe 5 is injected into the patient's skin.

[0033] Embodiment 1:

[0034] like Figure 1-4 As shown, when the present invention is used for medication at the affected part of herpes zoster, the existing skin puncture medication route is to use acute phase methylene blue for medication. The methylene blue is administered subcutaneously. The methylene blue solution to be injected can be placed in the syringe housing 21 of the drug syringe 5. The above-mentioned drug syringe 5 is placed on the corresponding syringe push rod end fixing device and the syringe housing fixing device. The outer plate of the push rod 19 on the syringe is placed between the clamping fixing plate 18 and the push rod push plate 9, which is located on the clamping groove body 10 on the clamping fixing plate 18. The clamping fixing plate 18 and the push rod push plate 9 are tightened by screws to clamp the outer plate of the push rod. The outer plate on the syringe housing 21 is placed between the U-shaped placement plate 13 and the clamping fixing plate 2 14. The outer plate of the syringe housing 21 is located in the syringe housing placement groove 15 inside the U-shaped placement plate 13. The U-shaped placement plate 13 and the clamping fixing plate 2 14 are clamped by screws to fix the outer plate of the syringe housing 21, wherein the U-shaped placement plate 13 can play a supporting role for the syringe housing 21.

[0035] In order to increase the stability of the syringe during use, the syringe housing clamping and fixing device includes a clamping plate 31, at the bottom end of which a height adjustment rod 15 is arranged, and the bottom end of the height adjustment rod 15 is fixedly connected to the operating platform 1, and the height adjustment is achieved through a compression spring rod 17. By adjusting the height of the corresponding height adjustment rod 15, the clamping plate 31 can clamp the syringe on the U-shaped placement plate 13, thereby preventing the syringe from shaking during use.

[0036] After the syringe is fixed, the above-mentioned local drug delivery device for postherpetic neuralgia is placed in the use position, so that the needle-shaped drug delivery part 7 on the injection head 6 gently pierces the skin surface of the herpes zoster affected area for the administration of methylene blue in the acute phase; at this time, the rotation of the drive motor 3 is controlled by tilting the control button 24 on the control panel 23, which is specifically controlled by the PLC controller to control the drive motor action, and the number of rotations of the drive motor 3 can be accurately controlled by the PLC controller. The drive motor 3 drives the rotating screw 4 to rotate, thereby driving the corresponding clamping fixed plate 8 and the push rod pushing plate 9 to push the push rod 19 forward, so as to achieve accurate control of the pushing distance of the push rod 19, and finally the drug in the herpes zoster affected area can be squeezed out, and the therapeutic liquid can also be injected into the affected area, so that the drug delivery effect of the entire device is better, which is conducive to the rapid recovery of the patient.

[0037] The above structure can also use multiple syringes to administer medication to the affected area of ​​the patient's skin at the same time, so that multiple groups of syringes can inject medication at the same time, which improves the medication efficiency and frees people's hands.

[0038] Embodiment 2:

[0039] When the present invention is used in practice, the four sides of the disinfection cotton can be directly fixed to the end of the injection head 6 by the clamping parts 28, and the disinfectant can be added to the syringe housing 21. At this time, the rotation of the drive motor 3 is controlled by tilting the control button 24 on the control panel 23. The drive motor action is specifically controlled by the PLC controller control, and the number of rotations of the drive motor 3 can be accurately controlled by the PLC controller. The drive motor 3 drives the rotating screw 4 to rotate, thereby driving the corresponding clamping fixed plate 8 and the push rod pushing plate 9 to push the push rod 19 forward, so as to achieve accurate control of the pushing distance of the push rod 19, and finally the disinfectant inside the syringe housing 21 can be squeezed out, and the disinfectant enters the skin affected area of ​​shingles through the disinfection cotton for disinfection, thereby achieving disinfection of the skin affected area.

[0040] The above structure can also use multiple sets of syringes and disinfection cotton to carry out disinfection at the same time, and can disinfect a large area of ​​the patient's herpes zoster affected area at the same time. The advancement speed of the corresponding syringe can be controlled by a PLC controller, and it is very practical.

[0041] In order to increase the stability of the syringe during the pushing process, a fixed end plate 18 is provided on the operating platform 1, the outer end of the guide shaft 12 is connected to the fixed end plate 18, and the inner end thereof is connected to the U-shaped placement plate 13, and the two guide shafts 12 are distributed in a symmetrical structure on both sides of the rotating screw 4.

[0042] Embodiment three:

[0043] like Fig. 9As shown, the drug syringe 5 includes a push rod 19, a piston 20 and a syringe housing 21, the piston 20 is connected to the end of the push rod 19, a threaded connection end 22 is provided at the end of the syringe housing 21, and a threaded connection tube 29 is provided at the inner end of the injection head 6. The injection head 6 is detachably connected to the syringe housing 21 by threaded cooperation between the threaded connection tube 29 and the threaded connection end 22.

[0044] When the present invention is in use, since the injection head 6 and the syringe housing 21 are detachably connected, the user can replace the injection head 6 of different models and sizes according to the needs of the herpes zoster affected area to meet the drug administration needs of herpes zoster affected areas of different sizes.

[0045] In order to achieve precise control over the driving device, a tilt control panel 23 is provided on the side of the operating platform 1 , and control buttons 24 for controlling the forward and reverse rotation of the driving motor 3 are provided on the tilt control panel 23 .

[0046] like Figure 6 As shown, a fixing block 25 is fixedly installed on the inner side of the U-shaped placement plate 13, and the rotating screw 4 is connected and fixed to the fixing block 25 at the end away from the driving motor 3. The syringe housing placement grooves 15 on both sides of the U-shaped placement plate 13 are arranged in a V-shaped structure, and the inner side V-shaped syringe housing placement groove 15 is used for placing the end of the syringe housing 21, and is clamped and fixed by the clamping and fixing plate 2 14, and the outer side V-shaped syringe housing placement groove 15 is used for placing the body of the syringe housing 21. The above structure can not only support the syringe housing through the U-shaped placement plate 13, but also clamp and fix the end of the syringe housing through the cooperation of the U-shaped placement plate and the clamping and fixing plate 2 14, which is convenient and practical.

[0047] like Fig. 9 As shown, in order to facilitate drug administration to the surface layer of the patient's herpes zoster skin, the needle-shaped drug administration part 7 on the injection head 6 is arranged in a circumferential array structure, the clamping part 28 arranged on its outer peripheral surface is arranged in an L-shaped structure, a limited position protrusion 26 is arranged at its end, and a central drug administration tube 27 is arranged at its center, and the diameter of the central drug administration tube 17 is larger than the diameter of the needle-shaped drug administration part 7. The diameter size of the central drug administration tube is set, and its drug administration effect is better than that of the peripheral needle-shaped drug administration part 7.

[0048] like Figure 1-6 As shown, in order to facilitate the installation and fixation of the drive motor, a drive motor fixing plate 30 is provided on the side of the operating platform 1 for installing and fixing the drive motor 3.

[0049] In order to increase the stability of the entire operating platform during the supporting process, the support column 2 is made of silicone material, which can provide a good anti-slip effect.

[0050] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A local drug delivery device for postherpetic neuralgia, comprising an operating platform (1), a plurality of support columns (2) being arranged at the bottom of the operating platform (1), characterized in that: The operating platform (1) is provided with a driving device, a local drug injection device, a syringe push rod end fixing device, a syringe housing fixing device and a syringe housing pressing fixing device, the driving device comprises a driving motor (3) and a rotating screw (4), and the output end of the driving motor (3) is connected to the end of the rotating screw (4) to drive the rotating screw (4) to work; The local drug injection device comprises a drug syringe (5) and an injection head (6), wherein the injection head (6) is detachably connected to the end of the drug syringe (5), a plurality of needle-shaped drug delivery parts (7) are arranged at the end of the injection head (6), and a plurality of engaging parts (28) are arranged on the outer peripheral surface thereof for fixing the disinfection cotton; The syringe push rod end fixing device comprises a clamping fixing plate (8) and a push rod pushing plate (9), a plurality of engaging grooves (10) are arranged on the clamping fixing plate (8), the clamping fixing plate (8) and the push rod pushing plate (9) are connected and fixed by screws, the push rod pushing plate (9) is connected to the rotating screw (4), guide holes (11) are arranged on both sides of the push rod pushing plate (9), and guide shafts (12) are inserted into the guide holes (11) on the push rod fixing plate (9); The syringe housing fixing device comprises a U-shaped placement plate (13) and a clamping and fixing plate (14) for clamping the end of the syringe housing. The U-shaped placement plate (13) and the clamping and fixing plate (14) are connected and fixed by screws. The bottom end of the U-shaped placement plate (13) is fixedly mounted on the operating platform (1) by screws. The top ends of the two side plates of the U-shaped placement plate (13) are provided with a plurality of syringe housing placement grooves (15) and the top end of the clamping and fixing plate (14) is provided with a syringe housing placement groove (16). The rotating screw (4) is driven to work by a driving motor (3). The rotating screw (4) rotates to drive the push rod to push the plate (9) to move, so that the medicine inside the medicine syringe (5) is injected into the patient's skin.

2. A local drug delivery device for postherpetic neuralgia according to claim 1, characterized in that: The syringe housing clamping and fixing device comprises a clamping plate (31), a height adjustment rod (15) is arranged at the bottom end of the clamping plate (31), the bottom end of the height adjustment rod (15) is fixedly connected to the operating platform (1), and the height adjustment is achieved through a compression spring rod (17).

3. A local drug delivery device for postherpetic neuralgia according to claim 2, characterized in that: A fixed end plate (18) is provided on the operating platform (1), the outer end of the guide shaft (12) is connected to the fixed end plate (18), and the inner end is connected to the U-shaped placement plate (13), and the two guide shafts (12) are distributed in a symmetrical structure on both sides of the rotating screw (4).

4. A local drug delivery device for postherpetic neuralgia according to claim 1, characterized in that: The drug syringe (5) comprises a push rod (19), a piston (20) and a syringe housing (21); the piston (20) is connected to the end of the push rod (19); a threaded connection end (22) is provided at the end of the syringe housing (21); a threaded connection tube (29) is provided at the inner end of the injection head (6); the injection head (6) is detachably connected to the syringe housing (21) by threaded cooperation between the threaded connection tube (29) and the threaded connection end (22).

5. A local drug delivery device for postherpetic neuralgia according to claim 2 or 3, characterized in that: A tilting control panel (23) is arranged on the side of the operating platform (1), and a control button (24) for controlling the forward and reverse rotation of the driving motor (3) is arranged on the tilting control panel (23).

6. A local drug delivery device for postherpetic neuralgia according to claim 5, characterized in that: A fixing block (25) is fixedly mounted on the inner side of the U-shaped placement plate (13); the rotating screw rod (4) is connected and fixed to the fixing block (25) at the end away from the driving motor (3); the syringe housing placement grooves (15) on both sides of the U-shaped placement plate (13) are arranged in a V-shaped structure; the inner V-shaped syringe housing placement groove (15) is used for placing the end of the syringe housing (21) and is clamped and fixed by the clamping fixing plate (14); and the outer V-shaped syringe housing placement groove (15) is used for placing the syringe housing (21) tube body.

7. A local drug delivery device for postherpetic neuralgia according to claim 1, characterized in that: The needle-shaped drug delivery part (7) on the injection head (6) is arranged in a circular array structure, the engaging part (28) arranged on the outer circumference thereof is arranged in an L-shaped structure, a limiting protrusion (26) is arranged at the end thereof, and a central drug delivery tube (27) is arranged at the center thereof, and the diameter of the central drug delivery tube (17) is larger than the diameter of the needle-shaped drug delivery part (7).

8. A local drug delivery device for postherpetic neuralgia according to claim 1, characterized in that: A drive motor fixing plate (30) is provided on the side of the operating platform (1) for installing and fixing the drive motor (3).

9. A local drug delivery device for postherpetic neuralgia according to any one of claims 1 to 8, characterized in that: The support column (2) is made of silica gel material.

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