Automatic drug injection device

Abstract

The present invention relates to the field of injection medical devices, and discloses an automatic drug injection device, including a bandage, an injection mechanism and a support mechanism, wherein the injection mechanism includes a syringe and a driving member, the syringe is connected to the bandage, a piston is provided inside the syringe, a needle is provided at the bottom of the piston, the driving member is connected to the piston, a through hole is provided at the bottom of the syringe, and a sealing layer is provided in the through hole; the support mechanism includes a plurality of support rods, and the plurality of support rods are evenly connected to the outer periphery of the syringe. The device can automatically inject sedatives to patients with epileptic seizures, thereby solving the problem that epileptic seizures cannot be treated in time.

Description

Technical Field

[0001] The present invention relates to the field of injection medical devices, and in particular to an automatic drug injection device. Background Art

[0002] Epilepsy is a transient brain dysfunction caused by excessive synchronous discharge of brain neurons. Epilepsy patients will suddenly have an attack for no reason. People of any age can get sick. It is one of the most common neurological diseases, including abnormal movement, sensation, consciousness, mental, behavioral and autonomic nervous system functions. But no matter what form it takes, when an epileptic seizure occurs, you need to immediately follow the doctor's advice to use sedatives to control the symptoms.

[0003] Compared with the uncontrollable treatment effect, it is more important to prevent epilepsy attacks and take effective treatment measures when an attack occurs. In order to better respond to the emergency treatment of epilepsy patients when they suddenly develop symptoms, a variety of epilepsy bracelets have been developed on the market. Epilepsy bracelets are based on precise biosensors and unique epilepsy monitoring algorithms to achieve accurate alarms during epileptic attacks, and send information about epileptic attacks to the patient's relatives through the system so that relatives can provide timely assistance to prevent accidents such as biting the tongue, falling, drowning, suffocation, etc.

[0004] However, epilepsy bracelets are more of an alarm function, and they cannot provide timely sedative injections to patients with epileptic seizures. Even in hospitals, it still takes some time for medical staff to inject sedatives after discovering the patient's epileptic seizure. For some patients with severe symptoms, it still cannot better guarantee their safety. Summary of the invention

[0005] The present invention is intended to provide an automatic drug injection device for automatically injecting sedatives into patients with epileptic seizures, thereby solving the problem that epileptic seizures cannot be treated in an emergency in a timely manner.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic drug injection device, including a strap, an injection mechanism and a supporting mechanism, the injection mechanism including a syringe and a driving member, the syringe is connected to the strap, a piston is provided inside the syringe, a needle is provided at the bottom of the piston, the driving member is connected to the piston, a through hole is provided at the bottom of the syringe, and a sealing layer is provided in the through hole; the supporting mechanism includes a plurality of supporting rods, and the plurality of supporting rods are evenly connected to the outer periphery of the syringe.

[0007] The beneficial effects of this solution are: 1. An automatic injection device that can be bound to the patient's limbs is set up, and the driving member in the automatic injection device is controlled to drive the piston and the pillow to move, thereby completing the automatic injection of the sedative and achieving emergency treatment for epileptic patients.

[0008] 2. By connecting a number of support rods around the syringe, the support rods are located between the strap and the syringe, so as to further support and fix the syringe fixed on the strap, thereby ensuring the stability of the device before and during operation, thereby ensuring the safety of patients using the device.

[0009] 3. By opening a through hole at the bottom of the syringe and setting a sealing layer in the through hole, the needle can be set as a whole inside the syringe to avoid accidents and additional harm to the patient caused by the syringe. The sealing layer allows the needle to penetrate into the patient's skin to achieve the injection of the sedative solution.

[0010] Preferably, the driving member is a dual-axis motor, a fixed plate is provided on the top of the injection barrel, and the dual-axis motor is connected to the fixed plate; the output shaft of the dual-axis motor located inside the injection barrel is connected to a screw, and a sliding block is slidably connected inside the injection barrel, the screw is threadedly connected to the sliding block, and a pushing cylinder is provided between the bottom of the sliding block and the top of the piston for connection.

[0011] Preferably, a rotating disk is connected to the other output shaft of the dual-axis motor, and a rotating part is provided on the side wall of the rotating disk; the support rods are connected to a turntable, the turntables are rotatably connected to the top of the injection barrel, and the turntables are meshed with the rotating part.

[0012] Preferably, the rotating part includes several groups of two parallel parts that are parallel to each other one above and one below, and several arc-shaped parts. The several groups of parallel parts and the several arc-shaped parts are cross-distributed, and one end of the arc-shaped part is connected to the adjacent upper parallel part, and the other end of the arc-shaped part is connected to the adjacent lower parallel part; a plurality of grooves are evenly arranged on the circumference of the rotating disk, the thickness of the arc-shaped part is the same as the thickness of the horizontal part, and two adjacent grooves can be engaged with the same group of upper and lower horizontal parts at the same time.

[0013] Preferably, the pulley is made of soft material, a sliding groove is provided on the strap, and the pulley is located below the strap.

[0014] Preferably, it also includes a shell, which is connected to the strap, and the injection mechanism and the supporting mechanism are both located inside the shell.

[0015] Preferably, it further comprises a control mechanism, which comprises an automatic controller and a wristband connected to each other, and the automatic controller is connected to the driving member.

[0016] The beneficial effect of this solution is that when the epilepsy bracelet detects an epileptic seizure in the patient, the information is immediately sent to the automatic controller, and the automatic controller immediately controls the dual-axis motor to start after receiving the information, thereby realizing the full automatic control of the injection device. Moreover, after the injection is completed, the patient is calmed and controlled, and the automatic controller can also send the information of the patient's epileptic seizure to the device of the patient's relatives, so that the patient can receive further placement and assistance.

[0017] Preferably, a power source is also connected to the fixed plate, the power source is connected to the dual-axis motor, and the automatic controller is arranged on the fixed plate.

[0018] Preferably, a diaphragm is provided inside the injection barrel, the diaphragm is located below the piston, and an exhaust section is provided between the diaphragm and the piston; a plurality of exhaust holes are provided on the needle head, and the exhaust holes are all located in the exhaust section.

[0019] The beneficial effects of this solution are as follows: when the dual-axis motor is started, there is a process before the needle penetrates into the patient's skin. In order to avoid waste of sedatives, a diaphragm is added, and there is an exhaust section between the diaphragm and the bottom of the piston; when the device is started, the gas in the exhaust section is first discharged through the exhaust hole, and the gas is quickly blown out from the needle tip to purge the skin to be injected below the injection hole, blowing away sweat or other impurities on the skin, further ensuring the safety of the injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the device in Example 1 of the present invention when viewed from above;

[0021] Figure 2 A three-dimensional diagram of the device in Example 1 of the present invention when viewed from above;

[0022] Figure 3 is a top view of the device in Example 1 of the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of the device in Example 1 of the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the device in Example 3 of the present invention. DETAILED DESCRIPTION

[0025] The following is further described in detail through specific implementation methods:

[0026] The figure marks in the drawings of the specification include: strap 1, injection hole 11, sliding groove 12, injection cylinder 2, piston 21, needle 22, exhaust hole 221, sliding block 23, push cylinder 24, diaphragm 25, dual-axis motor 3, screw 31, rotating disk 32, parallel portion 321, arc portion 322, support rod 4, pulley 41, turntable 42, limit rod 43.

[0027] Example

[0028] The embodiment is basically as shown in the attached Figure 1-4 As shown, Figure 1The automatic drug injection device shown in the figure includes a bandage 1, an injection mechanism and a support mechanism; the bandage 1 is made of breathable cotton material, and Velcro is set at both ends for binding and fixing, which can meet the binding requirements of patients of different body shapes. The injection mechanism includes a syringe 2 and a driving member, and the bottom of the syringe 2 is bonded and fixed to the bandage 1, as shown in FIG. Figure 4 As shown, the piston 21 is slidably connected inside the syringe 2, and the piston 21 is used to seal the tranquilizer liquid temporarily stored in the syringe 2; a needle 22 is vertically fixed at the bottom of the piston 21, and the movement of the piston 21 can drive the needle 22 to move downward to puncture the patient's skin for injection; the driving member is connected to the piston 21, and is used to drive the piston 21 to move. The support mechanism includes a plurality of support rods 4, which are evenly distributed on the periphery of the syringe 2, and are used to evenly support the syringe 2, so as to improve the stability of the device bound to the patient's limbs.

[0029] like Figure 3 As shown, in this embodiment, the syringe 2 is a cylinder, and the corresponding piston 21 is also round. The piston 21 is made of silicone to ensure a sealed sliding connection between the side wall of the piston 21 and the inner wall of the syringe 2, thereby ensuring the preservation of the tranquilizer in the syringe 2 and the smooth pushing of the medicine. Figure 2 As shown, a circular injection hole 11 is provided in the middle of the bandage 1, and a through hole is also provided in the middle of the bottom of the syringe 2, a sealing rubber layer is bonded and fixed in the through hole, the through hole at the bottom of the syringe 2 is coaxial with the injection hole 11, and the diameters of the through hole and the injection hole 11 are both larger than the diameter of the needle 22; Figure 4 As shown, when the driving member drives the piston 21 to drive the needle 22 to move downward, the needle tip of the needle 22 penetrates the sealing rubber layer and then enters the patient's skin through the injection hole 11 to inject the tranquilizer. Since the fastest way to inject tranquilizers to treat epilepsy patients is intramuscular injection and subcutaneous injection, the injection method selected in this embodiment is subcutaneous injection. Furthermore, the syringe 2 is tied to the patient's upper arm by the strap 1. After fixation, the needle 22 and the patient's upper arm form a 90° vertical relationship, which ensures that the needle 22 is inserted into the subcutaneous tissue for a sufficient length and reduces the setting length of the needle 22, thereby reducing the overall height of the device for easy use.

[0030] like Figure 4As shown, the driving part is a double-axis motor 3, and both sides of the double-axis motor 3 are provided with an output center shaft; a circular fixing plate is fixedly connected to the top of the injection cylinder 2, and a mounting hole is provided in the middle of the fixing plate, and the double-axis motor 3 is fixed above the mounting hole. After fixing, the two output shafts at both ends of the double-axis motor 3 are in a vertical state, one above and one below, and the output shaft below is located in the mounting hole. At the same time, a power supply slot is also provided on the fixing plate, and a power supply is provided inside the power supply slot. In this embodiment, the power supply is a small button battery, and the button battery is connected to the double-axis motor 3 to supply power to the double-axis motor 3, and a power control switch is provided on the fixing plate in this embodiment, and the power control switch is connected to the button battery and the double-axis motor 3. The power control switch can control the start, stop, forward and reverse rotation of the double-axis motor 3. The start and stop and forward and reverse rotation control of the motor are prior art and will not be repeated here.

[0031] The output shaft below the dual-axis motor 3 passes through the fixed plate and is located inside the syringe 2. A screw 31 is coaxially fixed to the output shaft below. A sliding block 23 is slidably connected inside the syringe 2, and the sliding block 23 is located above the piston 21. The specific connection method of the sliding block 23 is as follows: four evenly distributed sliding grooves are vertically opened on the inner wall of the syringe 2, and four sliders are evenly fixed on the side of the sliding block 23. The four sliders are slidably connected to the four sliding grooves respectively. The cooperation between the sliding grooves and the sliders can prevent the sliding block 23 from rotating and improve the sliding stability of the sliding block 23. A threaded through hole is opened in the middle of the sliding block 23, and the threaded through hole is threadedly matched with the screw 31. When the dual-axis motor 3 drives the screw 31 to rotate, the sliding block 23 slides up and down inside the syringe 2 under the action of the threaded through hole. At the same time, a push cylinder 24 is fixed at the bottom of the sliding block 23, and the bottom of the push cylinder 24 is fixed to the top of the piston 21. Therefore, when the sliding block 23 slides downward under the action of the screw 31, the piston 21 can be pushed downward smoothly by the push of the push cylinder 24; the push cylinder 24 is added to connect the sliding block 23 and the piston 21, and the sliding block 23 slides on the inner wall of the injection cylinder 2 to offset the instability of the rotation of the screw 31, thereby reducing the shaking of the needle 22 and ensuring the safety of the injection process. After setting, before the device is started, the screw 31 does not contact the piston 21.

[0032] To further ensure safety, Figure 4As shown, before starting the injection device, the needle 22 is arranged as a whole inside the syringe 2. The tranquilizer liquid is filled between the piston 21 and the bottom of the syringe 2. At the same time, a plurality of exhaust holes 221 are opened at the upper end of the needle 22, and the exhaust holes 221 are opened at different horizontal planes of the needle 22 respectively, so as to avoid affecting the strength of the needle 22 structure due to opening multiple exhaust holes 221 at the same horizontal position. In this embodiment, two exhaust holes 221 are opened. Before the device is started, the needle 22 is located inside the syringe 2 as a whole, so the tranquilizer will not flow out from the needle tip; when the device is started, the needle 22 moves downward and passes through the sealing rubber layer at the bottom of the syringe 2 and gradually approaches the skin. At the same time, the tranquilizer enters the needle 22 through the exhaust holes 221 and flows out from the needle tip. When the needle 22 has penetrated the patient's skin, the injection treatment can be started automatically. In actual use, the upper arm to which the injection device is to be tied can also be disinfected with iodine in advance to further ensure the safety of the injection.

[0033] like Figure 4 As shown, the output shaft on the top of the dual-axis motor 3 is fixedly connected to a rotating disk 32, and the rotating disk 32 is also circular. Figure 2 As shown, a rotating part is welded and fixed on the side wall of the rotating disk 32; a rotating disk 42 is fixed on the top of each support rod 4, and a pulley 41 is rotatably connected to the bottom of each support rod 4. The rotating disk 42 is meshed with the rotating part on the rotating disk 32. When the rotating disk 32 rotates under the drive of the dual-axis motor 3, the rotating rotating part can drive the rotating disk 42 to rotate, thereby driving the supporting rods 4 to expand outward with the top as the center of the circle. During the process of the bottom of the supporting rod 4 expanding outward, the pulley 41 rolls outward, thereby tightening the patient's skin, that is, tightening the skin below the injection hole 11, so as to reduce the possibility of additional damage to the patient caused by the needle 22 during the insertion process or the breakage of the needle 22 due to muscle twitching and shaking during the patient's epileptic seizure.

[0034] In this embodiment, four support rods 4 are provided. The rotating part includes a plurality of groups of two horizontal parts parallel to each other, one above the other and a plurality of arc parts 322, and the plurality of arc parts 322 are distributed between two adjacent groups of horizontal parts in a cross-interval manner. Figure 2As shown, one end of the arc portion 322 is fixedly connected to the horizontal portion in the upper middle of an adjacent group of horizontal portions, and the other end of the arc portion 322 is fixedly connected to the horizontal portion in the lower middle of another adjacent group of horizontal portions; since there are four support rods 4, there are four arc portions 322 and four groups of horizontal portions. The thickness of the arc portion 322 is the same as that of the horizontal portion. At the same time, each turntable 42 is provided with a number of grooves with uniform intervals along its outer circumference, and the grooves are all in the shape of Ω, and the openings of the grooves are slightly larger than the thickness of the arc portion 322 and the horizontal portion to ensure that the arc portion 322 and the horizontal portion can enter the grooves. The turntables 42 are all rotatably connected above the injection cylinder 2. Specifically, two spaced limit rods 43 are welded and fixed above the injection cylinder 2 to ensure that the distance between the two limit rods 43 is slightly larger than the thickness of the turntable 42, and then a rotating shaft is fixedly connected to the top of the two limit rods 43. A circular hole is opened at the center of the turntable 42. The turntable 42 is rotatably sleeved on the rotating shaft between the two limit rods 43 through the circular hole to achieve the limited rotation connection of the turntable 42; in this embodiment, the dual-axis motor 3 drives the rotating disk 32 to rotate counterclockwise, and the arc-shaped portion 322 plays a guiding role. A groove on the four turntables 42 that is engaged with the arc-shaped portion 322 is driven by the rotating arc-shaped portion 322 to rotate upward synchronously by the same distance, thereby driving the four rotating disks 32 to rotate at the same time, thereby realizing the expansion of the four support rods 4 fixedly connected to the turntable 42.

[0035] After the arc-shaped portion 322 drives the groove to rotate, the groove rotates upward and backward to engage with the horizontal portion, and the groove and the adjacent groove below are respectively engaged with the upper and lower horizontal portions in the same group; at this time, the rotating disk 32 rotates and the rotating disk 42 is stationary, until the rotating disk 32 continues to rotate to make the groove engaged with the upper horizontal portion disengage from the horizontal portion, and the lower groove begins to engage with the lower end of the arc-shaped portion 322, and the rotating disk 32 continues to rotate. Driven by the upward arc-shaped portion 322, the lower groove gradually rotates upward, thereby driving the rotating disk 42 to rotate again, that is: driven by the rotating disk 32, the rotating disk 42 rotates intermittently, so the process of the support rod 4 expanding outward is also intermittent, thereby slowing down the speed of the support rod 4 expanding, thereby increasing the stretching and supporting of the support rod 4 The intermittent stop time can also provide a buffer process for the four support rods 4 to synchronize. Taking into account that the patient's muscles will twitch during an epileptic seizure, the sliding resistance of the pulley 41 at the bottom of each support rod 4 is different. Therefore, the sliding progress of the pulley 41 may be different. The difference causes the sliding distances of the pulley 41 in the four directions of the skin to be different, which will lead to the effect of tightening and straightening the skin at the injection site not being uniform and effective, and it is also impossible to better ensure that the needle 22 is inserted vertically and smoothly. The intermittent time provided by the horizontal part can further provide time for delaying the sliding of the pulley 41, and try to ensure that the next slide and the four pulleys 41 are at the same circumferential starting point, thereby ensuring the tightening effect on the skin at the injection site.

[0036] In this embodiment, the pulley 41 is made of soft rubber material. Figure 3 As shown, the pulleys 41 are all located below the bandage 1. After the device is fixed to the patient's upper arm by the bandage 1, the pulleys 41 will press against the skin and squeeze downward to further ensure the support effect; the arc surface and soft material of the pulley 41 can avoid damage to the patient's skin during support, and also provide redundancy for the support rod 4 to expand outward. By increasing the number of grooves opened on the turntable 42 and shortening the distance between the upper and lower parallel parts 321 at the same time, the angle of rotation of the turntable 42 after the dual-axis motor 3 rotates one circle can be reduced, thereby slowing down the sliding speed of the pulley 41 and increasing the support time of the support rod 4. Through testing, it can also be confirmed that when the needle 22 moves down until the sedative injection is completed, all the pulleys 41 are still against the patient's skin driven by the support rod 4. After the injection is completed, the patient is sedated and the limbs no longer twitch, but the support mechanism continues to support, reducing the occurrence of additional damage to the patient caused by the needle 22.

[0037] Finally, a housing (not shown in the figure) is included, which is sleeved and fixed on the bandage 1 to cover the entire injection device for protection and ensure the smooth operation of the device. The bandage 1 is provided with a sliding groove 12 for the pulley 41 to contact the patient's skin.

[0038] The specific implementation process is as follows:

[0039] The device is mainly used for epilepsy patients who are examined in the hospital and in other special situations, such as when the family members are away and the epilepsy patient is alone; when wearing it, the device can be tied to the patient's upper arm by wrapping the strap 1.

[0040] When the patient has an epileptic seizure, the patient presses the power control switch to start the dual-axis motor 3, and the output shafts at both ends of the dual-axis motor 3 drive the screw rod 31 and the rotating disk 32 to rotate respectively. At this time, the screw rod 31 rotates through the sliding block 23 to smoothly drive the piston 21 to move to the side close to the patient's skin. Before the needle 22 penetrates the sealing rubber layer and penetrates into the patient's skin, part of the tranquilizer is squeezed out. After the needle tip is filled with tranquilizer liquid, the needle 22 continues to move and penetrates into the patient's skin to start emergency treatment of drug injection.

[0041] While injecting the drug, driven by the rotating disk 32 and the rotating disk 42, the support rod 4 is extended outward, and the pulley 41 rolls outward along the four sides of the skin to be injected, tightening the skin below the injection hole 11 to ensure that the needle 22 enters vertically smoothly, further ensuring the safety of the injection.

[0042] After the injection is completed, the patient is calmed down and the dual-axis motor 3 is controlled to reverse to drive the needle 22 to withdraw. The calmed patient can remove the bandage 1 and press to stop bleeding.

[0043] Example 2

[0044] An automatic drug injection device, which is different from Example 1 in that it also includes a control mechanism, the control mechanism includes an automatic controller and a wristband connected to each other, and the automatic controller is connected to a driving member.

[0045] The control mechanism includes an automatic controller and a monitoring bracelet that are connected to each other. The automatic controller is connected to a dual-axis motor 3. The monitoring bracelet is an epilepsy bracelet. When the patient wears the epilepsy bracelet, it can monitor the epileptic seizure and feed back the information to the automatic controller as soon as the epileptic seizure is determined. After receiving the information of the epileptic seizure, the automatic controller immediately controls the dual-axis motor 3 to start, thereby driving the piston 21 in the syringe 2 to move, driving the needle 22 to move down and enter the patient's skin, and automatically injecting the sedative, automatically realizing the first-time treatment of paired epileptic patients. In addition, the epilepsy bracelet can also send information to devices installed with software for receiving information, such as mobile phones, tablet computers, etc.; so that the family members of epileptic patients can receive information about the patient's epileptic seizure as soon as possible, and go home to take care of the patient in time, thereby further ensuring the safety of the patient. The epilepsy bracelet is a prior art, and this embodiment will not be repeated.

[0046] The automatic controller is fixed on the circular fixing plate on which the dual-axis motor 3 is installed. In addition, in this embodiment, the automatic controller is a single-chip microcomputer, which is programmed to realize automatic connection control between the epilepsy bracelet and the automatic injection device.

[0047] The specific implementation process is as follows:

[0048] When wearing, wrap the device around the patient's upper arm and put the epilepsy bracelet on the patient's wrist.

[0049] When the epilepsy bracelet detects an epileptic seizure in the patient, the information is immediately sent to the single-chip microcomputer. After receiving the information, the single-chip microcomputer immediately controls the dual-axis motor 3 to start, and the output shafts at both ends of the dual-axis motor 3 respectively drive the screw rod 31 and the rotating disk 32 to rotate.

[0050] The screw rod 31 rotates through the sliding block 23 to smoothly drive the needle 22 to move to the side close to the patient's skin, and penetrates the sealing rubber layer into the patient's skin to perform emergency treatment of drug injection.

[0051] After the injection is completed, the patient is calmed and controlled, and the single-chip microcomputer controls the dual-axis motor 3 to stop, and at the same time, the information of the patient's epileptic seizure is sent to the device of the patient's relatives so that the patient can receive further placement and assistance.

[0052] Example 3

[0053] like Figure 5The automatic drug injection device shown is different from Example 2 in that a diaphragm is provided inside the injection barrel, the diaphragm is located below the piston, and there is an exhaust section between the diaphragm and the piston; the exhaust holes 221 on the needle 22 are all located in the exhaust section.

[0054] When the dual-axis motor 3 is started to drive the needle 22 to move downward to pierce the patient's skin, there is a process. In order to avoid the waste of tranquilizer, a diaphragm 25 is further bonded and fixed inside the syringe 2. The material of the diaphragm 25 is a medical PU film, and the tranquilizer is stored between the diaphragm 25 and the bottom of the syringe 2. There is an exhaust section between the diaphragm 25 and the bottom of the piston 21. At the same time, all the exhaust holes 221 on the needle 22 are located in the exhaust section before the device is started. Before the device is started, the sedative cannot enter the needle 22 from the exhaust hole 221 due to the obstruction of the diaphragm 25, and therefore will not flow out from the needle tip; when the device is started, the needle 22 moves downward, and the gas in the exhaust section is first discharged through the exhaust hole 221. During the exhaust period, the needle 22 passes through the sealing rubber layer at the bottom of the syringe 2 and gradually approaches the skin. At the same time, the gas is quickly blown out from the needle tip of the needle 22 to purge the skin to be injected below the injection hole 11, and blow away the sweat or other impurities on the skin, further ensuring the safety of the injection; when the gas is discharged, the piston 21 continues to move through the diaphragm 25, and the sedative enters the needle 22 through the exhaust hole 221 and flows out from the needle tip. At this time, the needle 22 has penetrated the patient's skin, and the automatic injection treatment can begin.

[0055] The specific implementation process is as follows:

[0056] When the single chip microcomputer controls the dual-axis motor 3 to start, the screw rod 31 rotates through the sliding block 23 to smoothly drive the piston 21 to move to the side close to the patient's skin. Before the needle 22 penetrates the sealing rubber layer and pierces the patient's skin, the air in the discharge period is quickly discharged through the needle tip through the exhaust hole 221 at the top of the needle 22. After the gas purges the skin under the injection hole 11, the gas discharge piston 21 moves to crush the diaphragm 25, allowing the tranquilizer to enter the needle 22. At this time, the needle tip penetrates the patient's skin to start emergency drug injection treatment.

[0057] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A drug automatic injection device, characterized in that: It includes a bandage, an injection mechanism and a support mechanism. The injection mechanism includes a syringe and a driving member. The syringe is connected to the bandage. A piston is provided inside the syringe. A needle is provided at the bottom of the piston. The driving member is connected to the piston. A through hole is provided at the bottom of the syringe. A sealing layer is provided in the through hole. The support mechanism includes a plurality of support rods. The plurality of support rods are evenly connected to the outer periphery of the syringe. The bottom of the support rod is rotatably connected to a pulley; the driving part is a double-axis motor, and a fixed plate is provided on the top of the injection cylinder, and the double-axis motor is connected to the fixed plate; A rotating disk is connected to the other output shaft of the dual-axis motor, and a rotating part is provided on the side wall of the rotating disk; a rotating disk is connected to each of the support rods, and each of the rotating disks is rotatably connected to the top of the injection cylinder, and the rotating disk is meshed with the rotating part; The rotating part includes several groups of two parallel parts which are parallel to each other one above and one below, and several arc parts. The several groups of parallel parts and the several arc parts are cross-distributed, and one end of the arc part is connected to the adjacent upper parallel part, and the other end of the arc part is connected to the adjacent lower parallel part. Several grooves are evenly arranged on the circumference of the rotating disk, the thickness of the arc part is the same as that of the horizontal part, and two adjacent grooves can be engaged with the same group of upper and lower horizontal parts at the same time.

2. The automatic drug injection device according to claim 1, characterized in that: The output shaft of the double-axis motor located inside the injection barrel is connected with a lead screw, a sliding block is slidably connected inside the injection barrel, the lead screw is threadedly connected to the sliding block, and a push cylinder is provided between the bottom of the sliding block and the top of the piston for connection.

3. The automatic drug injection device according to claim 2, characterized in that: The pulley is made of soft material, a sliding groove is arranged on the strap, and the pulley is located below the strap.

4. The automatic drug injection device according to claim 3, characterized in that: It also includes a shell, which is connected to the strap, and the injection mechanism and the supporting mechanism are both located inside the shell.

5. The automatic drug injection device according to claim 4, characterized in that: It also includes a control mechanism, which includes an automatic controller and a wristband connected to each other, and the automatic controller is connected to the driving member.

6. The automatic drug injection device according to claim 5, characterized in that: The fixed plate is also connected with a power source, the power source is connected with the double-axis motor, and the automatic controller is arranged on the fixed plate.

7. The automatic drug injection device according to claim 6, characterized in that: A diaphragm is arranged inside the injection barrel, the diaphragm is located below the piston, and an exhaust section is arranged between the diaphragm and the piston; a plurality of exhaust holes are arranged on the needle head, and the exhaust holes are all located in the exhaust section.

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