TWM477288U - Injection aid for syringe or needle pen - Google Patents

Description

Injection aid for hypodermic syringe

The present invention relates to an auxiliary device, and more particularly to an injection aid device. The auxiliary device can be disassembled and disassembled on a disposable conventional syringe or a pen-type syringe (hereinafter referred to as "syringe") to help the user to perform subcutaneous injection conveniently and safely. When replacing a new disposable conventional syringe or changing the cartridge for a pen-type syringe, the auxiliary device can be quickly disassembled by hand. After the replacement is completed, the auxiliary device is re-installed.

Patients with certain diseases must be treated at home for a long time or with family help to treat the disease or maintain health. For example, type I and some type II diabetes patients need to be injected with trypsin to maintain blood sugar stability. Among them, some patients use disposable traditional syringes 40 (Fig. 1) that are relatively inexpensive and provide more flexibility. In addition, more and more patients use pen-type syringes 10 (Fig. 1) because they are easy to carry. It is less likely to attract attention and is convenient for injection when it is outside, and the pen-type syringe has a pre-filled insulin cartridge, which does not require self-extraction of insulin and saves time, and can be used one or more times.

As shown in Fig. 2, no matter which of the above syringes is used, after the needle cover is removed, the needle is barely mounted on the tip end of the syringe, and the syringe is pressed and the needle is first contacted and penetrated into the skin. During the process, the injection angle cannot be fixed. It must be visually observed. The injection depth must be controlled by hand or replaced with different length needles and the whole needle is not subcutaneous. The syringe itself does not provide the ability to maintain the injection angle and control the injection depth. Functionality, especially for those with physical movement disorders, hand tremor problems, or other difficult-to-apply areas such as the buttocks or the upper part of the upper arm, it is more difficult to use these syringes correctly and safely. It is generally recommended to perform subcutaneous injections in a vertical injection area (90 degrees) and deep into the subcutaneous fat layer to avoid penetration into the muscles. The actual injection depth varies from person to person, because each person is fat and thin. In addition, the selection of the injection site when subcutaneous injection is important, as far as possible to avoid the application of the same area on the skin in a short period of time, resulting in easy skin fibrosis in the area; when using the aforementioned syringe injection, only naked and It is not convenient to remember or use other auxiliary tools such as magnifiers or labels to help find the location.

It is another problem to disassemble the injection needle after the subcutaneous injection. In order to prevent the used needle from sticking to the patient itself or to help the injecting or innocent third party, it is often necessary to first use the needle cover to remove the needle and then remove the needle. The movements, which are stabbed in the process because of carelessness or disharmony or poor eyesight, sometimes cause irreparable damage. After the syringe needle is used, there is no guiding mechanism when the needle sleeve is used to return the sleeve. Since the needle is directly exposed, the finger is easily stabbed during the process.

Another common occurrence is that patients sometimes have to perform an injection at night or in an environment with little or no light. Some patients with visual impairment or the elderly have been struggling even in the daytime, even in the dark; the aforementioned syringes do not provide the function of a light source, and often cannot find the injection position in the dark. Sometimes Will puncture into the veins, causing bleeding. Various problems due to the above-described subcutaneous injection using an existing syringe include the inability to maintain a vertical injection angle, easy to shake, inability to control the depth of the injection, easy to be stabbed by the needle, difficulty in identifying the injection area, and no self-light source. There is a need to provide an economical and simple solution to help patients overcome psychological barriers and solve these problems.

The technical means utilized in the present invention is to provide a detachable injection aid device, which can be repeatedly disassembled and used on the conventional syringe to help the user to perform subcutaneous injection more conveniently and safely. In addition to maintaining a vertical injection angle, reducing hand sway, amplifying the injection area, preventing needle stick injuries, and controlling the depth of injection, the injection aid can provide illumination for the user to perform an injection in an environment with little or no light. The injection aid includes a base, a clamping mechanism, an injection guide sleeve, a light source module, a depth adjustment member and a power supply unit;

Wherein, the susceptor houses all the components of the auxiliary device and provides a first space for the syringe, the first space is coaxial with the syringe, and the first space is close to the injection region and the end of the injection region is the proximal end of the pedestal, away from the end of the injection region. Is the distal end of the base. A mechanism is provided on the base to fix the injection guide sleeve in a proper position, so that the needle mounting portion of the syringe is exposed to facilitate the user to install or replace the needle so that the syringe does not easily change the needle due to the presence of the auxiliary device. The portion of the base shielding cartridge carrying chamber may be transparent or at least provided with an open space for viewing the remaining amount of medicament in the syringe cartridge.

The clamping mechanism is located at the distal end of the base and connected to the base for dismounting the auxiliary device on the syringe by hand. The clamping mechanism comprises a jacket and a sleeve, wherein the jacket is an element whose inner diameter contracts when the force is applied, and the inner diameter of the jacket needs to be slightly larger than the outer diameter of the clamped region of the syringe; the inner diameter of the jacket can be With the outer diameter of the syringe changed, syringes of different diameters can be used to replace the jackets with different inner diameters. The jacket is sandwiched between the sleeve and the base, and the sleeve is connected to the upper and lower sides of the base and locked, and the sleeve is pressed and deformed and contracted, and the syringe placed therein is clamped, thereby fixing the injection aid. The device is placed above the syringe. The auxiliary mechanism can be quickly disassembled and detached from the aforementioned syringe by using the clamping mechanism without any need of borrowing tools. Especially for pen-type syringes that can be used multiple times, the auxiliary device does not need to be removed after each injection, and can be used continuously until the medicine tube on the pen-type syringe is used and a new medicine tube is replaced. The original injection aid can be reused even if a new syringe is to be replaced.

The injection guide sleeve is coaxial with the first space and is slidably coupled to the base and includes the syringe therein; has opposite proximal and distal ends, one end near the injection area is proximal, and one end remote from the injection area is distal The proximal end of the injection guide sleeve has a guiding space, and the guiding space is in contact with a characteristic dimension on the injection needle sleeve, and when the injection is completed, the needle sleeve is used to guide the needle sleeve to safely disassemble the used needle. During the process, the injection needle is completely enclosed within the injection guide sleeve and the needle cover to prevent the user from being stabbed by the injection needle. At the distal end of the injection guide sleeve, an elastic member is placed behind it and located in the base, and an elastic force is generated by the pressure, and the elastic force continues to act on the injection guide sleeve so as to protrude from the tip end of the syringe injection needle. When the injection is pressed, the injection guide sleeve is pressed by the skin and moves along the syringe in the opposite direction to the injection direction to further compress the elastic member; when the injection is completed, the amount of depression is removed, and the injection guide sleeve is elasticized by the distal end thereof. The rebounding force of the component will reverse back along the syringe. As long as the proximal plane of the injection guide is level with the skin of the injection area during the compression injection process, the syringe can be kept in vertical contact with the injection site. The function of the injection guide sleeve is for the user with hand tremor problem, providing a large area of stable support before the needle contacts and inserts into the skin to avoid hand shaking for injection, which helps the syringe to remain vertical (90 Injection angle until the injection is completed. For users with needle phobia, because the needle is not directly exposed, it is hidden inside the injection guide sleeve during the whole injection process, so it can reduce the degree of fear and protect the injecting person from needle stick injury. The injection guide sleeve needs to have a perspective and magnification function, in order to visualize and enlarge the injection position, so as to conveniently find the proper injection position and avoid bleeding caused by tying the vein to the vein.

The light source module is disposed at a proximal end of the base and faces the injection area, and is composed of an illumination photoelectric plate and a plurality of illumination elements. The plurality of illumination elements are evenly distributed on the illumination photoelectric plate along the periphery of the injection guide sleeve, and are electrically connected. The connection mode is connected with the power supply unit, and the illumination is provided above the injection area during the injection; the power supply unit is provided with a switch mechanism to activate the light source when the user needs to use the illumination to save power. By providing illumination by the light source module provided on the auxiliary device, the user can smoothly inject at night or in a place without a light source. The user can use the light source to prepare the relevant articles for injection, find and determine the injection position, adjust the injection dose, and clean and disinfect the injection area for injection. After the injection is completed, it is easy to clean up. After use, the needle can be safely stored in the container immediately to avoid being stabbed by the needle.

The depth adjusting member is disposed on the base, and at least one positioning position is provided in the direction of the syringe to the injection guide sleeve for blocking the injection guide sleeve to control the injection depth. The selection of the injection depth depends on the fatness and the injection site of the injecting body. The difference is decided. The depth of injection is determined by limiting the position of the injection guide sleeve. When the injection is pressed, the injection guide sleeve is moved along the side away from the injection area, and the needle is exposed to the injection guide sleeve and toward the injection area. One of the movements penetrates into the skin, how much the needle is exposed, and how much the skin is pierced. The depth adjustment component provides the injection depth setting function. The user can use the same length of the needle to inject different parts of the body by adjusting the injection depth without changing the different lengths of needles.

The creation is a combination of a needle, a magnified area, a vertical stable injection, an injection depth setting, a nighttime illumination, etc., and can be easily disassembled and used on an existing syringe to re-use the injection aid, which can not only solve the current use of a conventional syringe. All the aforementioned problems of subcutaneous injection, and provide more practical functions, users do not need to change the syringe or use any other auxiliary tools, whether it is day, night, indoor or outdoor, safe, correct and convenient subcutaneous injection .

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following further describes the preferred embodiment as illustrated in the following: the present invention provides a detachable type. The injection aid can be reused on a subcutaneous injection device such as a conventional disposable conventional syringe or a pen-type syringe. In the present embodiment, the hypodermic injection device is a pen type syringe.

As shown in FIG. 3, the injection assisting device includes a base 100, a clamping mechanism 200, an injection guide sleeve 300, a light source module 400, a depth adjustment member 500, and a power supply unit 600. As shown in FIG. 4 and FIG. 6, the clamping mechanism 200 is composed of a sleeve 210 and a jacket 220 engaged with the base 100. The distal end of the base 100 has a threaded portion 100h and a thread of the sleeve 210. The portion 210c is connected, and the jacket 220 is sandwiched between the conical surface 210a of the sleeve 210 and the conical surface 100a of the base 100 by the conical surfaces 220a and 220b, respectively; the jacket 220 has a slot 220c. A deformation space is provided. When the threaded portion 100h of the base 100 engages with the threaded portion 210c of the sleeve 210 and is locked along the axial direction of the pen injector 10, the conical surfaces of the base 100 and the sleeve 210 are axially facing each other. Approaching the two conical faces 220a, 220b of the jacket 220 and simultaneously squeezing the collet 220 forces it to contract in the radial direction, the injection aid is thus tightened onto the pen injector. With this clamping mechanism, the user can quickly disassemble the injection aid on the syringe and reuse it without using a tool. The base 100 is provided with a slot 100c. In addition to providing a mechanism for guiding and fixing the injection guide sleeve 300, it can also be used to observe the pen type syringe 10 in the base 100, and check whether the medicine tube 10d in the medicine tube carrying chamber 10c is There are also potions.

As shown in FIG. 5, a pin 310 is fixed near the distal end of the injection guide sleeve 300, and the force of the pin 310 is moved along the trajectory of the groove 100c on the base 100 to move between the starting point 100d and the end point 100f. At the same time, the movement of the injection guide sleeve 300 is also limited. As shown in FIG. 4, the distal end of the injection guide sleeve 300 has a step receiving portion 300a for receiving an elastic member 320, and the elastic member 320 is kept concentric with the injection guide sleeve 300; the other end of the elastic member 320 is fixed by a fixing. The ring 330 is received by the ring 330. The fixing ring 330 is also concentric with the injection guide sleeve 300. The back surface 330a of the fixing ring 330 is in close contact with one of the shoulders 100e of the base 100. The step receiving portion 300a and the fixing ring 330 of the injection guide sleeve 300 are closely attached. The accommodating space formed is smaller than the free length of the elastic member 320, and thus the elastic member 320 is compressed to generate an elastic force which continues to act on the injection guide sleeve 300 before and after the injection depression. (Fig. 4, 5) Before the injection is pressed, the elastic force of the elastic member 320 acts on the injection guide sleeve 300 to move in the injection direction A until the latch 310 located thereon is stopped at the starting point 100d, at this time. The proximal plane 300b of the injection guide sleeve 300 protrudes from the tip end of the syringe injection needle 30a to protect the user from being stabbed by the needle; when the injection is pressed, the injection guide sleeve 300 contacts the skin of the injection needle 30a first and provides a A stable support of a large area (300b); when the pressing is continued, the injection guide sleeve 300 is pressed by the skin and moves in a direction opposite to the injection direction A, and the latch 310 is also moved to compress the elastic member 320. The greater the elasticity is generated, the elastic force acts on the injection guide sleeve 300 so that the proximal plane 300b is in close contact with the skin to support the hand to avoid its shaking; when the injection guide sleeve 300 is retracted, the tip of the injection needle 30a protrudes from the injection guide. When the sleeve 300 is at the proximal end plane 300b, the injection needle 30a begins to penetrate the skin. As shown in FIG. 9, when the injection needle set 30 is to be mounted, the needle 310 is pushed by the finger to drive the injection guide sleeve 300 back along the groove 100c of the base 100, until finally, the end track of the groove 100c is axially Instead of radial, the latch 310 will eventually be parked at the end point 100f in order to maintain the injection guide sleeve 300 at this height position, at which point the needle mounting portion 10a at the proximal end of the syringe will be completely exposed, facilitating the patient to install the injection needle. After the assembly 30 is completed, the latch 310 is again dialed to return to the starting point 100d. As shown in FIG. 10, the proximal end of the injection guide sleeve 300 has a guiding space 300c which is in mating contact with a feature size 30c on the injection needle sleeve 30b. When the injection is completed, the needle sleeve 30b is guided back. The sleeve is used to disassemble the needle 30a. During the process, the injection needle 30a is completely enclosed within the injection guide sleeve 300 and the needle cover 30b to prevent the user from being injured by the injection needle 30a. In addition, the injection guide sleeve 300 has a perspective and magnification function, in order to visualize and enlarge the injection site to avoid bleeding from the blood vessel.

As shown in FIG. 4 and FIG. 6 , the base 100 has a flange 100b. The internal space device has a light source module 400. The light source module 400 is composed of an illumination photoelectric plate 410 and a plurality of illumination elements 420. The light source module 400 is connected to the power unit circuit board 620 via the power transmission line 610, and then via the conductor A 630, the power supply element 640, the conductor B 650, the power unit cover 660, the power unit box 670, and the power unit circuit board 620. The conductive path is formed to obtain electric power, and the illumination element 420 is supplied to emit light. When the threaded portion 660a of the power unit cover 660 is locked with the threaded portion 670a of the side power unit box 670 of the base 100, all the components on the passage are pressed and connected to each other, forcing the circuit to be turned on, and when the loosening is formed, an open circuit is formed. Power supply; wherein the power unit cover 660 and the power unit box 670 are both electrically conductive, the insulating ring 690 is used to isolate the positive and negative poles of the power supply component 640, to avoid short circuit, and the sealing ring 680 is used to isolate moisture and avoid the power unit cover 660. The power unit box 670 cannot be effectively connected due to long-term rotation loosening. The conduction and non-conduction of the circuit can be controlled by only using the rotating power unit cover 660, which is the switching mechanism of the preferred embodiment of the present invention. Compared with conventional syringes, there is no need for other lighting equipment to use self-light source. This creation can help patients to inject on time without environmental and time constraints, without delaying the timing of effective injection.

As shown in FIGS. 5 and 6, an annular region 500a of the inner edge of the depth adjusting member 500 is coupled to the peripheral groove 100g of the base 100 and is rotatable at several angles in the radial direction of the base 100. The depth adjusting member 500 has an axial slot 500b centered on the axial slot 500b, and each of the left and right sides has a set of different height arc notches 500c, 500d. The two sets of gaps have the same size and shape and are bilaterally symmetrical. (Fig. 9) When the user wants to install or replace the needle of the syringe, the axial slot 500b must be rotated concentric with the groove 100c of the base 100 so that the latch 310 on the injection guide sleeve 300 can be along the base 100. The groove 100c is moved upward to the end point 100f, and is not blocked by the depth adjusting member 500 in the middle, in which the injection guide sleeve 300 is completely retracted into the proximal end of the base 100 and the needle mounting portion 10a is exposed; 8) When the user wants to perform the injection, the depth adjusting member 500 can be rotated to move the arc notch 500c or 500d to the center line of the groove 100c of the base 100, so that the pin 310 can be blocked in the arc gap. Further, the injection guide sleeve 300 is prevented from continuing to move upward. At this time, the length of the needle extending beyond the injection guide sleeve 300 is the injection depth D at which the needle is inserted into the skin. The effective injection depth can be preset by rotating the depth adjusting member 500 to select different high and low arc notches 500c or 500d. Only the syringe is pressed down during the injection, and the injection guide sleeve 300 naturally stops when the set depth is reached, and there is no need to worry about the injection. Not deep enough or too deep for injection. Sometimes the depth of the injection does affect the effect of the injection. In the case of insulin injection, the injection depth is not enough, insulin will enter the skin, thus affecting the onset time and duration of action of the insulin; the injection depth is too deep, and insulin will enter the muscles. It absorbs more quickly, but the duration of action does not last long. In addition, the injection of muscles can increase the pain.

When the needle is removed after the injection is completed, in order to keep the needle-type syringe 10 of the pen-type syringe 10 from being contaminated by the environment, the plug 20 can be inserted into the proximal guide space 300c of the injection guide sleeve 300 to prevent intrusion of dust, foreign matter, and the like. To begin the injection, the plug 20 is removed and inserted into the end of the power unit cover 660 to avoid loss (Figure 7).

The preferred embodiment of the present invention is used as shown in Fig. 7. The pen type syringe 10 is inserted from the top end opening 210b of the injection aid device sleeve 210 and stays in place (the injection tip 30a is present in the presence of the injection needle 30a). Inside the guide sleeve 300, the pedestal 100 and the threaded portion of the sleeve 210 are screwed, and the injection aid is fixed to the pen injector 10. (Fig. 9) Before the injection is performed, the latch 310 on the injection guide sleeve 300 is moved by a finger to move up to the end point 100f, at which time the injection guide sleeve 300 is completely retracted into the base 100, the pen type syringe The needle mounting portion 10a of the front end 10 is completely exposed, and the injection needle set 30 (including the injection needle 30a and the needle cover 30b) can be rotatably mounted; then the latch 310 is moved by the finger to move it back to the starting point 100d, and the guide sleeve is injected. 300 is bounced back, and the injection needle cover 30b is ejected to disengage it from the injection needle 30a, and protrudes from the tip end of the injection needle 30a to hide the injection needle 30a, at which point the injection is ready. (Fig. 8) Before the start of the injection, the injection area is first sterilized with an alcohol cotton sheet, and then the depth adjustment member 500 is rotated to turn the arc notch 500c or 500d to the path in which the pin 310 moves, and the pen type syringe wheel is pulled up and rotated. 10b to set the injection dose; next, it is ready to start the injection; firstly, the proximal end plane 300b of the injection guide sleeve 300 is pressed against the injection area, and then the pen type syringe 10 is pressed down, and then the injection guide sleeve 300 and the insertion pin 310 are retracted, at this time, the needle is pressed. Extending and piercing the skin, when the pin 310 is stopped against the arc notch 500c or 500d on the depth adjusting member 500 (the position of 500c indicates that the injection depth is shallow, and the depth of 500d is deep), the pen injector 10 can be pressed. After the administration of the runner 10b, the pen injector 10 is withdrawn from the injection area in the opposite direction, and the entire injection process is completed. When lighting is required, the power unit cover 660 is tightened; the power unit cover 660 is turned off to turn off the power. When the cartridge 10d of the pen injector 10 is to be replaced, the screw portion 100h/210c of the base 100 and the sleeve 210 is released, and the pen injector 10 can be withdrawn. After the replacement, follow the above steps to repeat the installation and use the auxiliary device.

Another mode of use of the preferred embodiment of the present invention is shown in Fig. 11. The injection assisting device can also be used in the disposable conventional syringe 40 in the same manner as described above, so that it will not be described. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any person having ordinary knowledge in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the novel modifications or modifications made by the novel teachings are still within the scope of the novel features.

(10)‧‧‧ pen type syringe

(10a)‧‧‧Needle Mounting Department

(10b)‧‧‧ pen type syringe runner

(10c) ‧ ‧ drug tube bearing room

(10d) ‧ ‧ medicinal tubes
(20)‧‧‧ 塞头
(30) ‧ ‧ shot needle set
(30a)‧‧‧Injection needle
(30b)‧‧‧Injection needle sets
(30c)‧‧‧Feature size
(40) ‧‧‧Disposable traditional syringes
(100) ‧ ‧ pedestal
(100a) ‧‧‧ pedestal conical surface
(100b)‧‧‧Base flange
(100c)‧‧‧Base trench
(100d) ‧‧‧Base groove starting point
(100e) ‧ ‧ pedestal internal shoulder
(100f)‧‧‧Base groove termination point
(100g) ‧‧‧Base trench
(100h) ‧‧‧Base thread
(200)‧‧‧Clamping mechanism
(210)‧‧‧Sleeve
(210a)‧‧‧Sleeve conical surface
(210b)‧‧‧Sleeve top opening
(210c)‧‧‧Sleeve thread
(220)‧‧‧ Jacket
(220a)‧‧‧ Jacket Conical Surface 1
(220b)‧‧‧ Jacket Conical Surface 2
(220c)‧‧‧ Jacket slotting
(300)‧‧‧Injection guide sleeve
(300a) ‧‧‧Step Acceptance Department
(300b)‧‧‧Injection guide proximal plane
(300c) ‧‧‧Injection guide guide space
(310) ‧‧‧Latch
(320)‧‧‧Flexible components
(330) ‧‧‧Fixed ring
(330a) ‧ ‧ back of the retaining ring
(400)‧‧‧Light source module
(410)‧‧‧Lighting photovoltaic panels
(420)‧‧‧Lighting elements
(500)‧‧‧Deep adjustments
(500a) ‧‧‧ring area
(500b)‧‧‧Axial slotting
(500c)‧‧‧Arc notch 1
(500d) ‧‧‧ arc gap 2
(600)‧‧‧Power supply unit
(610)‧‧‧Power transmission wires
(620)‧‧‧Power unit circuit board
(630)‧‧‧Electrical conductor A
(640)‧‧‧Power supply components
(650)‧‧‧Electrical B
(660)‧‧‧Power unit cover
(660a)‧‧‧Power unit cover thread
(670)‧‧‧Power unit box
(670a)‧‧‧Power unit box thread
(680)‧‧‧Seal ring
(690)‧‧‧Insulation ring

Figure 1 is a conventional disposable syringe and pen injector. Figure 2 is a schematic view of a conventional disposable syringe and pen injector injection. Figure 3 is a perspective view of a preferred embodiment of the present invention. Figure 4 is a cross-sectional view of a preferred embodiment of the present invention. Figure 5 is a right side view of the preferred embodiment of the present invention. Figure 6 is a perspective exploded view of the preferred embodiment of the present invention. Figure 7 is a representation of the preferred embodiment of the present invention. Figure 8 is a schematic illustration of the injection of the preferred embodiment of the present invention. Fig. 9 is a schematic view showing the needle mounting of the preferred embodiment of the present invention. Fig. 10 is a schematic view showing the disassembly of the needle in the state of use of the preferred embodiment of the present invention. Figure 11 is a perspective view showing another use example of the preferred embodiment of the present invention.

10‧‧‧ pen type syringe

20‧‧‧ 塞头

100‧‧‧Base

210‧‧‧ sleeve

220‧‧‧ Jacket

300‧‧‧Injection guide sleeve

310‧‧‧Latch

320‧‧‧Flexible components

330‧‧‧Fixed ring

410‧‧‧Lighting photovoltaic panels

420‧‧‧Lighting elements

500‧‧‧depth adjustments

610‧‧‧Power transmission wire

620‧‧‧Power unit circuit board

630‧‧‧Electrical conductor A

640‧‧‧Power supply components

650‧‧‧Electrical B

660‧‧‧Power unit cover

670‧‧‧Power unit box

680‧‧‧Seal ring

690‧‧‧Insulation ring

Claims (10)

An injection auxiliary device is disassembled and assembled on a disposable conventional syringe or a pen-type syringe (hereinafter referred to as a "syringe"), comprising: a base for accommodating all the parts of the auxiliary device, and providing a first space to the syringe And coaxial with each other, one end of the first space near the injection area is a proximal end of the base, and one end away from the injection area is a distal end; an injection guide sleeve is coaxially and slidably connected to the base And including the syringe, having a proximal end and a distal end, a proximal end adjacent to the injection area being a proximal end, a distal end being a distal end, the proximal end protruding from a tip end of the syringe injection needle; a depth adjustment member located at Providing at least one positioning point to the injection guide sleeve in the direction of the syringe for blocking the injection guide sleeve to control the injection depth; a light source module disposed at the proximal end of the base and facing the injection area Electrically connecting with a power supply unit to obtain power for providing illumination; a power supply unit is located on the side of the base and electrically connected to the light source module, and is provided with a switch mechanism for Providing a power source; and a clamping mechanism located at a distal end of the base and coupled to the base for manually disassembling the auxiliary device on the syringe; thereby, the injection assisting device provides a vertical injection angle, Stabilize the injection, mask the needle, enlarge the injection area, control the injection depth, night illumination and other functions and reuse, to help users more convenient and safe subcutaneous injection. The injection aid device of claim 1, wherein the base is provided with a mechanism for fixing the injection guide sleeve so that the user can replace the injection needle. For example, in the injection assisting device described in claim 2, the proximal end of the injection guide sleeve has a guiding space. When the injection is completed, the needle sleeve is used to guide the needle sleeve to safely disassemble the needle to avoid sticking to the needle. The injection aid device according to claim 3, wherein the injection guide sleeve has a perspective and magnification function for viewing the selected injection position to prevent bleeding from the blood vessel. The injection assisting device of claim 4, wherein an elastic element is disposed between the distal end of the injection guide sleeve and the base, and the pressure guiding sleeve is continuously applied to the proximal end of the injection guide sleeve. The skin remains in contact to provide hand support to stabilize the injection. The injection aid device of claim 5, wherein the base is provided with at least one unobstructed line of sight for observing the remaining amount of the cartridge medicament of the syringe. The injection aid device of claim 6, wherein the clamping mechanism is provided with a jacket, the inner diameter of the jacket can be changed according to the outer diameter of the syringe, and the syringes of different diameters can be replaced with different inner diameters. The jacket of the diameter. The injection aid according to the seventh aspect of the patent application, the jacket may also be a jaw, and further, the axial or radial or the combination of the two is applied to force the component of the syringe to be a diameter. The design to deform the clamp to the syringe is within the scope. The light source module can also be mounted on the injection guide sleeve in conjunction with the injection guide sleeve as claimed in claim 7 or 8. The injection assisting device according to claim 9, wherein the power supply unit may be independent of the base, and the power supply unit is fixed on the base by a fixing member.