Syringes and injection platforms

Abstract

The present invention provides a syringe and an injection platform, wherein the syringe comprises a support shell, a first elastic body, and an injection assembly, wherein the first elastic body and the injection assembly are both mounted on the support shell, and the injection assembly can extract liquid medicine under the drive of a human drive mode or an electromechanical drive mode, and can discharge the liquid medicine extracted from the injection assembly under the drive of the first elastic body and the injection assembly itself. The present invention is simple to operate and easy to use, and the person being injected can perform the injection operation by himself, saving medical resources and the person being injected time. The structural design of the switching of the various states of the barrel is ingenious, and the entire device is made of conventional components, which is low in price and has good universality, and can meet the requirements of disposable use.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a syringe and an injection platform. Background Art

[0002] Currently, there are many types of manually activated syringes on the market for injecting drug solutions, drug suspensions, vaccines, drug treatments and other liquid drugs. Such syringes need to be operated by medical practitioners to inject the drug into the patient's body through the syringe, but it is difficult for patients to operate and use them independently.

[0003] Since some diseases require patients to receive regular injections of drugs or products every day, and since the recipients cannot complete the injections by themselves, they need to go to the hospital every day to be assisted by medical staff, which wastes a lot of medical resources and a lot of the recipients' time.

[0004] Patent document CN103182115A discloses a plunger for a retractable syringe, a retractable syringe and an assembly method thereof, wherein the syringe comprises a retractable needle, the plunger comprises a plunger rod capable of engaging the retractable needle, a plunger outer edge, a control member connected to the plunger rod and a spring, wherein the plunger rod, the plunger outer edge and the control member cooperate to releasably maintain the spring in an initial compressed state, but the syringe still requires the assistance of medical staff during injection, wasting a lot of time. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a syringe and an injection platform.

[0006] According to the present invention, a syringe is provided, comprising a supporting shell, a first elastomer, and an injection assembly; the first elastomer and the injection assembly are both mounted on the supporting shell and the injection assembly can extract liquid medicine under the drive of a manual drive mode or an electromechanical drive mode and can discharge the liquid medicine extracted from the injection assembly under the drive of the first elastomer and the injection assembly itself.

[0007] Preferably, it also includes a first locking assembly and a first liquid reservoir, the injection assembly includes a barrel, a first piston and an injection head, the barrel, the first locking assembly and the first liquid reservoir are all mounted on the support shell and the barrel can move relative to the support shell; the injection head is mounted on the barrel, the barrel is provided with a first barrel chamber, the first piston is provided with a first piston end, the first piston end extends to the interior of the first barrel chamber and can slide relative to the barrel, a first accommodating space is formed between the first piston end and the barrel, and the first accommodating space is connected to the first liquid reservoir through a one-way valve; the two ends of the first elastic body are respectively connected to the support shell and the barrel; the barrel includes an initial position, a liquid storage position and an injection position, under the drive of an external force, the first piston can drive the barrel to move from the initial position toward the first direction and stop at the liquid storage position, at this time, the first piston continues to move toward the first direction under the drive of an external force and draws a preset volume of liquid medicine in the first liquid reservoir into the first accommodating space and is locked by the first locking assembly;

[0008] When the first locking assembly is unlocked, the cylinder moves toward the second direction from the liquid storage position to the injection position under the driving force of the elastic force of the first elastic body, and the first piston moves toward the second direction under the action of the external atmospheric pressure and makes the liquid in the first containing space flow out through the injection head, wherein: the first direction is opposite to the second direction, and the initial position is located between the liquid storage position and the injection position.

[0009] Preferably, the injection assembly also includes a second piston and a first connecting rod, and a second cylinder chamber is provided on the cylinder; the first piston and the second piston are both installed on the first connecting rod; a second piston end is provided on the second piston, and the second piston end extends into the second cylinder chamber and forms a second accommodating space between the cylinder; the first connecting rod can drive the first piston and the second piston to move synchronously and thereby make the second accommodating space larger or smaller, and the second accommodating space is a vacuum environment.

[0010] Preferably, the first locking assembly includes a first rolling body, a second elastic body, a first locking shell and a first driving body; the injection assembly also includes a second connecting rod and a third connecting rod, and a movement channel is provided on the cylinder; one end of the second connecting rod is installed on the first connecting rod, and the other end of the second connecting rod is connected to one end of the third connecting rod; the first locking shell is installed on the supporting shell through a supporting frame, and the other end of the third connecting rod passes through the first locking shell and forms a first wedge-shaped space with the first locking shell, and the first wedge-shaped space is sequentially arranged with a first rolling body and a second elastic body along the first direction, and the width gradually increases.

[0011] Preferably, the first driving body comprises a lever body, a fixed shaft and a switch member; the lever body is rotatably mounted on the support frame via the fixed shaft, and the switch member is mounted at one end of the lever body. When the switch member is operated, one end of the lever body can be driven to rotate around the fixed shaft, thereby causing the other end of the lever body to drive the first rolling body to move in a first direction, thereby unlocking the first locking assembly; the switch member adopts any of the following structures:

[0012] - the switch member comprises an operating handle and a curved elastic sheet, wherein the curved elastic sheet is mounted on the supporting shell and one side of the curved elastic sheet is connected to one end of the lever body, and the other side of the curved elastic sheet is connected to the operating handle; when the first locking assembly is locked, the bulging surface of the curved elastic sheet protrudes toward one side of the operating handle; when the first locking assembly is unlocked, the bulging surface of the curved elastic sheet protrudes toward one side of the lever body;

[0013] The switch member comprises an operating handle, the operating handle is mounted on the supporting housing, and the operating handle is an elastic-plastic member.

[0014] Preferably, a first blocking platform is provided on the support shell, and a second blocking platform is provided on the cylinder along the circumference; when the cylinder moves toward the first direction, the second blocking platform is blocked by the first blocking platform so that the cylinder stops at the liquid storage position; when the cylinder moves toward the second direction, the cylinder is blocked by the support frame so that the cylinder stops at the injection position.

[0015] Preferably, an injection end shell and a first protective cover are provided at one end of the support shell facing the second direction; the first protective cover is detachably mounted on one end of the injection end shell and together form a third accommodating space, and when the cylinder is in the initial position, the end of the injection head passes through the other end of the injection end shell and extends into the third accommodating space; a second protective cover is detachably mounted on one end of the support shell facing the second direction; a fourth accommodating space is formed between the support shell and the second protective cover, and disinfectant cotton, a sharp tool and a second liquid reservoir are provided in the fourth accommodating space; the disinfectant cotton is connected to the first protective cover, and the second protective cover can move toward the support shell under the drive of external force, thereby driving the sharp tool to pierce the second liquid reservoir and then allowing the disinfectant in the second liquid reservoir to flow into the disinfectant cotton.

[0016] Preferably, it further comprises a first driving body and a second driving body, wherein the first driving body and the second driving body are both mounted on the supporting shell, and the first driving body and the second driving body adopt any of the following structures:

[0017] -The first driving body and the second driving body are both smart materials or phase changers;

[0018] - Both the first driving body and the second driving body are magnetic driving bodies, wherein the first connecting rod is a magnet or a ferromagnet, and the first driving body can magnetically drive the first connecting rod to move in a first direction;

[0019] The second driving body can magnetically drive the operating handle of the first locking assembly to move; the first driving body and the second driving body are both electromagnets.

[0020] Preferably, it also includes a second locking assembly, the second locking assembly including a second rolling body, a third elastic body, a blocking member, a second locking shell and a first driving body; the second locking shell is installed on the support frame, and a second wedge-shaped space is formed between the third connecting rod and the second locking shell, and the second wedge-shaped space is sequentially arranged with a third elastic body, a second rolling body and a blocking member along the first direction, and the width of the second wedge-shaped space gradually decreases; a fourth elastic body is arranged between the support frame and the second connecting rod, and the fourth elastic body is sleeved on the third connecting rod; a fourth connecting rod is arranged on the second connecting rod, and when the second connecting rod moves toward the second direction, it can drive the fourth connecting rod to move, thereby squeezing the blocking member to deform and then driving the second rolling body to move toward the second direction. At this time, the second rolling body allows the third connecting rod to move toward the first direction; the second locking assembly adopts any of the following settings:

[0021] - a fifth elastic body is arranged between one end of the second locking housing facing the first direction and the support frame;

[0022] - The second rolling body is an elastic body;

[0023] -The second locking housing is an elastomer.

[0024] An injection platform provided according to the present invention can be installed with one or more of the above-mentioned syringes, and in an electromechanical drive mode, includes a control mechanism and a power mechanism; the control mechanism is signal-connected to the power mechanism, and the power mechanism can drive the injection assembly to operate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention is simple to operate and easy to use. The person being injected can perform the injection operation by himself, which saves medical resources and the person being injected's time.

[0027] 2. The present invention is capable of convenient and quick unlocking by providing a one-way locking assembly, and can realize quantitative control of the amount of drug injection by designing the volume of the first liquid reservoir or by grasping the movement stroke of the first piston relative to the cylinder, and is highly practical.

[0028] 3. In the present invention, the injection process can be achieved by human or non-human means, and can be specifically set according to the actual application scenario, with flexible structure and good universality.

[0029] 4. The structural design of the switching of the various states of the cylinder in the present invention is ingenious, and the entire device is made of conventional components, which is low in price and can meet the requirements of disposable use.

[0030] 5. In the present invention, a fourth elastic body is arranged between the support frame and the second connecting rod, and by selecting springs of different types and different sizes of negative pressure chambers, the doctor's actions in the process of pushing medicine can be simulated, so that the medicine pushing speed is more stable and the person being injected has a better injection experience.

[0031] 6. In the present invention, no additional energy is required during the movement of the first piston toward the second direction, and the injection can be completed only by relying on the negative pressure and elastic potential energy of the device itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 It is a schematic diagram of the structure of the cylinder of the present invention when it is in the liquid storage position;

[0034] Figure 2 It is a schematic diagram of the structure when the barrel is at the injection position and the liquid medicine in the first containing space is not injected;

[0035] Figure 3 is a structural schematic diagram when the barrel is at the injection position and the injection of the liquid medicine in the first containing space is completed;

[0036] Figure 4 It is a schematic diagram of the structure when the cylinder is in the initial position, wherein a first protective cover and a second protective cover are installed on the cylinder;

[0037] Figure 5 It is a schematic diagram of the structure of the cylinder when it is in the injection position, wherein a first protective cover and a second protective cover are installed on the cylinder;

[0038] Figure 6 It is a schematic diagram of the structure of the cylinder in the liquid storage position in Example 2, wherein a first protective cover and a second protective cover are installed on the cylinder;

[0039] Figure 7 This is a schematic diagram of the structure of the cylinder in Example 2 when it is in the injection position, and no protective cover is installed on the cylinder;

[0040] Figure 8 is a schematic diagram of the structure after the injection is completed in Example 2, wherein the blocking member has been damaged;

[0041] Fig. 9 This is a schematic diagram of the structure of Example 2 during injection;

[0042] Fig.10 is a schematic structural diagram when the fifth elastic body is installed on the second locking assembly;

[0043] Fig.11 This is a flowchart of the injection operation;

[0044] Fig.12 It is a structural schematic diagram when the first driving body and the second driving body are installed on the cylinder.

[0045] The figure shows:

[0046] DETAILED DESCRIPTION

[0047] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0048] Embodiment 1:

[0049] The present invention provides a syringe, such as Figure 1 to Figure 5 As shown, it includes a supporting shell 1, an injection component, a first locking component, a first elastomer 2 and a first liquid reservoir 9. The first elastomer 2 and the injection component are both mounted on the supporting shell 1 and the injection component can extract the medicine liquid under the drive of a manual drive mode or an electromechanical drive mode and can discharge the medicine liquid extracted from the injection component under the drive of the first elastomer 2 and the injection component itself.

[0050] Further, the first elastic body 2 is preferably a spring, and the injection assembly includes a cylinder 3, a first piston 4 and an injection head 5. The cylinder 3, the first locking assembly and the first liquid reservoir 9 are all mounted on the support shell 1 and the cylinder 3 can move relative to the support shell 1. The injection head 5 is mounted on the cylinder 3, and the cylinder 3 is provided with a first cylinder chamber 6. The first piston 4 is provided with a first piston end 10, which extends into the interior of the first cylinder chamber 6 and can slide relative to the cylinder 3. A first accommodating space 7 is formed between the first piston end 10 and the cylinder 3, and the first accommodating space 7 is connected to the first liquid reservoir 9 through a one-way valve 8. The liquid medicine in the first liquid reservoir 9 can enter the first accommodating space 7 through the one-way valve 8, but the liquid medicine in the first accommodating space 7 cannot enter the first liquid reservoir 9 through the one-way valve 8.

[0051] Furthermore, the injection assembly also includes a second piston 11 and a first connecting rod 12, a second cylinder chamber 13 is provided on the cylinder 3, the first piston 4 and the second piston 11 are both installed on the first connecting rod 12, a second piston end 14 is provided on the second piston 11, the second piston end 14 extends into the second cylinder chamber 13 and forms a second accommodating space 15 between the cylinder 3.

[0052] Furthermore, the injection assembly also includes a second connecting rod 16 and a third connecting rod 17, a movement channel 18 is provided on the cylinder 3, one end of the second connecting rod 16 is installed on the first connecting rod 12, the other end of the second connecting rod 16 is connected to one end of the third connecting rod 17, the other end of the third connecting rod 17 is movably cooperated with the first locking assembly, and the two ends of the first elastomer 2 are respectively connected to the support shell 1 and the cylinder 3.

[0053] The movement process of the cylinder 3 includes an initial position, a liquid storage position and an injection position. Under the drive of external force, the first connecting rod 12 can drive the first piston 4 and the second piston 11 to move synchronously, thereby making the second accommodating space 15 larger or smaller. A first blocking platform 26 is arranged on the support shell 1, and a second blocking platform 27 is arranged circumferentially on the cylinder 3. When the first piston 4 drives the cylinder 3 toward the first direction due to the drive of external force, the cylinder 3 moves from the initial position and stops at the liquid storage position due to the cooperation of the two blocking platforms. At this time, due to the action of the external force toward the first direction, the first piston 4 continues to move relative to the cylinder 3 toward the first direction. At this time, the volume of the first accommodating space 7 increases, and then the preset volume of the liquid in the first liquid reservoir 9 is drawn into the first accommodating space 7 and then locked by the first locking assembly; at the same time, the first connecting rod 12 drives the second piston 11 to move toward the first direction, thereby making the volume of the second accommodating space 15 larger. The second accommodating space 15 is a vacuum environment. Therefore, under the action of the external atmospheric pressure, the second piston 11 stores the tendency to move toward the second direction.

[0054] When the first locking assembly is unlocked, the cylinder 3 moves from the liquid storage position to the injection position in the second direction driven by the elastic force of the first elastic body 2, the injection head 5 is inserted into the skin of the injector, and the second piston 11 moves in the second direction under the action of the external atmospheric pressure, thereby driving the first piston 4 to move in the second direction and driving the liquid medicine in the first accommodating space 7 to flow out through the injection head 5. The first direction in the present invention is opposite to the second direction, and the initial position is located between the liquid storage position and the injection position.

[0055] Specifically, the first locking assembly includes a first rolling body 20, a second elastic body 21, a first locking shell 43 and a first driving body. The first rolling body 20 is preferably a steel ball, and the second elastic body 21 is preferably a plastic spring. The first locking shell 43 is installed on the support shell 1 through a support frame 19. The third connecting rod 17 passes through the first locking shell 43 and forms a first wedge-shaped space with the first locking shell 43. The first wedge-shaped space is sequentially arranged with the first rolling body 20 and the second elastic body 21 along the first direction, and the width gradually increases. Figure 1 As shown, when the third connecting rod 17 moves toward the first direction, the steel ball cannot block the movement of the third connecting rod 17. When the third connecting rod 17 moves toward the second direction, the friction between the steel ball and the third connecting rod 17 increases due to the action of the first wedge-shaped space and the spring, thereby locking the third connecting rod 17.

[0056] Specifically, the first driving body includes a lever body 22, a fixed shaft 23 and a switch component. The lever body 22 is rotatably mounted on the support frame 19 via the fixed shaft 23. The switch component is mounted at one end of the lever body 22. When the switch component is operated, one end of the lever body 22 can be driven to rotate around the fixed shaft 23, thereby causing the other end of the lever body 22 to drive the first rolling body 20 to move in a first direction, thereby unlocking the first locking assembly. The switch member preferably adopts a structure including an operating handle 24 and a curved elastic sheet 25, wherein the curved elastic sheet 25 is mounted on the supporting shell 1 and one side of the curved elastic sheet 25 is connected to one end of the lever body 22, and the other side of the curved elastic sheet 25 is connected to the operating handle 24. The curved elastic sheet 25 is a structure with one side bulging, including two states. When the first locking assembly is locked, the bulging surface of the curved elastic sheet 25 protrudes toward one side of the operating handle 24. When the operating handle 24 is pressed, the bulging surface of the curved elastic sheet 25 protrudes toward one side of the lever body 22, and the first locking assembly is unlocked. In a variation, the curved elastic sheet 25 can be omitted, and the operating handle 24 is mounted on the supporting shell 1. The operating handle 24 adopts an elastic-plastic member. When the operating handle 24 is pressed, the operating handle 24 cannot be reset or partially cannot be reset after being deformed, and the first rolling body 20 can be driven to move slightly through the lever body 22, which can also achieve the unlocking effect of the present invention.

[0057] Specifically, an injection end housing 28 and a first protective cover 29 are provided at one end of the support housing 1 facing the second direction. The first protective cover 29 is detachably mounted at one end of the injection end housing 28 and together encloses a third accommodating space 30. The injection end housing 28 and the first protective cover 29 together form a protective housing for the injection head 5, effectively ensuring that the injection head 5 is not damaged when the syringe is not in use. When the barrel 3 is in the initial position, the end of the injection head 5 passes through the other end of the injection end housing 28 and extends into the third accommodating space 30. The free end of the injection head 5 is inside the third accommodating space 30 when the barrel 3 is in the initial position and the liquid storage position. When the barrel 3 is in the injection position, the free end of the injection head 5 moves to the outside of the third accommodating space 30 to inject the person being injected.

[0058] Specifically, the support shell 1 has a second protective cover 31 detachably mounted on one end facing the second direction, and a fourth accommodating space 32 is formed between the support shell 1 and the second protective cover 31. Disinfection cotton 33, a sharp weapon 34 and a second liquid reservoir 35 are arranged in the fourth accommodating space 32. The disinfection cotton 33 is connected to the first protective cover 29. Driven by external force, the second protective cover 31 can slide toward the support shell 1 to drive the sharp weapon 34 to pierce the second liquid reservoir 35 and then allow the disinfectant in the second liquid reservoir 35 to flow into the disinfection cotton 33. The sharp weapon 34 can be a cone, a knife, etc. When the second protective cover 31 is removed, the support shell 1 can drive the disinfection cotton 33 to disinfect the injection site of the injectee. Furthermore, after the disinfection is completed, the first protective cover 29 can be removed to perform the injection operation.

[0059] Specifically, the external force that moves the first connecting rod 12 toward the first direction can be driven by humans in the human-driven mode or by machines in the electromechanical-driven mode, and can be specifically designed according to the actual application scenario. Fig.12 As shown, it is an application scenario in the electromechanical drive mode. In this embodiment, a first driving body 36 and a second driving body 37 are also included. The first driving body 36 and the second driving body 37 are both installed on the support shell 1. The first driving body 36 and the second driving body 37 can adopt a variety of driving forms, for example, they are both made of smart materials or phase changers, such as shape memory alloys, and phase changers such as phase change expansion materials. The structure that generates drive through temperature changes can achieve drive by generating elongation or expansion, and thus can drive the operating handle 24. For another example, the first driving body 36 and the second driving body 37 are both magnetic driving bodies. The first connecting rod 12 is a magnet or a ferromagnet. The first driving body 36 adopts the structure of an electromagnetic coil. When the first driving body 36 is energized, a magnetic field is generated, and the magnetic force drives the first connecting rod 12 to move toward the first direction.

[0060] Furthermore, the first driving body 36 preferably adopts an electromagnetic coil and an iron core, the electromagnetic coil is arranged along the circumference of the iron core, and the first connecting rod 12 preferably adopts a ferromagnetic body. When the electromagnetic coil is energized, a magnetic field is generated, and then the magnetic force attracts the first connecting rod 12 to overcome the elastic force of the first elastic body 2 and move toward the first direction, so that the first accommodating space 7 finally absorbs the liquid medicine, and at this time, the vacuum space volume of the corresponding second accommodating space 15 is increased. When the electromagnetic coil is powered off, the magnetic force is released, and there is a retraction force of the first elastic body 2 and a force of atmospheric pressure driving the second piston 11 to move toward the second direction. When the first locking assembly is unlocked, the second piston 11 moves toward the second direction to achieve the injection operation.

[0061] Specifically, the second driving body 37 can magnetically drive the operating handle 24 of the first locking assembly to move. In this embodiment, the second driving body 37 includes an electromagnet and a permanent magnet. After the electromagnet is energized to generate a magnetic field, it drives the permanent magnet to move, thereby realizing the action of pressing the operating handle 24 and realizing the operation of the first locking assembly from locking to unlocking.

[0062] In the present invention, when the first locking assembly is unlocked, on the one hand, the second piston 11 moves toward the second direction relative to the cylinder 3 under the action of atmospheric pressure, and on the other hand, the cylinder 3 moves toward the second direction relative to the support shell 1 driven by the retraction force of the first elastic body 2. Since the movement speed of the cylinder 3 relative to the support shell 1 driven by the elasticity of the first elastic body 2 is greater than the movement speed of the second piston 11 relative to the cylinder 3, and at the same time, the medicine, the cylinder 3, the first piston 4, the second piston 11, the first connecting rod 12, and the second connecting rod 16 constitute an inertial mass body as a whole, and there is friction between the piston and the cylinder 3, etc., the medicine flows out of the injection head 5 only after the injection head 5 is inserted into the human muscle. Among them, the support frame 19 plays a role in positioning the injection head 5. Therefore, the design of the syringe in the present invention is scientific and reasonable.

[0063] The present invention further provides an injection platform capable of installing one or more of the above-mentioned syringes, and in an electromechanical drive mode, comprises a control mechanism and a power mechanism. In this embodiment, the power mechanism comprises a first driving body 36 and a second driving body 37 .

[0064] The control mechanism is connected to the power mechanism by signal, the control mechanism issues a control command, the power mechanism executes the control command, and the power mechanism can drive the injection assembly to move and thus realize the injection operation of the syringe. In practical applications, the control mechanism in the present invention can realize the control of injection by setting a control board, and can also realize the operation of injection by a smart terminal by installing a wireless communication control mechanism.

[0065] In a specific application, the injection platform includes a robot arm, which can pick up the syringe at a preset position and reach the injection site under the control of a control mechanism to complete the injection operation for the person being injected. In practical applications, in order to improve efficiency, a speaker can be equipped to output sound or a multimedia device can be equipped to guide the person being injected to cooperate in completing the injection operation. In order to perform the injection operation more accurately, a corresponding sensor can also be equipped to identify whether the person being injected has reached the injection site. The injection platform can achieve efficient and accurate injection, complete continuous injection under special circumstances, save manpower, and in special circumstances, avoid infection between doctors and patients during injections of people with special diseases.

[0066] The injection platform in the present invention is not limited to a robot arm, but can also be a large injection platform, which can complete the injection of one or more types of liquid medicines, greatly improve the injection efficiency, and solve special medical needs in emergency situations.

[0067] Embodiment 2:

[0068] This embodiment is a preferred example of embodiment 1. In this embodiment, Figure 6 to Figure 10 As shown, it also includes a second locking assembly, which includes a second rolling body 38, a third elastic body 39, a blocking member 40, a second locking shell 44 and a first driving body. The second locking shell 44 is installed on the support frame 19, and a second wedge-shaped space is formed between the third connecting rod 17 and the second locking shell 44. The second wedge-shaped space is sequentially arranged with the third elastic body 39, the second rolling body 38, and the blocking member 40 along the first direction, and the width of the second wedge-shaped space gradually decreases. A fourth elastic body 41 is arranged between the support frame 19 and the second connecting rod 16, and the fourth elastic body 41 is sleeved on the third connecting rod 17. A fourth connecting rod 42 is arranged on the second connecting rod 16. When the second connecting rod 16 moves toward the second direction, it can drive the fourth connecting rod 42 to move, thereby squeezing the blocking member 40 to deform and then drive the second rolling body 38 to move toward the second direction. The blocking member 40 is an elastic-plastic body and cannot be restored after deformation. At this time, the second rolling body 38 allows the third connecting rod 17 to move toward the first direction driven by the fourth elastic body 41.

[0069] In this embodiment, the second locking assembly can be configured in a variety of ways: for example, a fifth elastic body 45 is disposed between one end of the second locking housing 44 facing the first direction and the support frame 19. For another example, the second rolling body 38 is an elastic body. For another example, the second locking housing 44 is an elastic body.

[0070] like Fig.10As shown, in the present invention, the arrangement of the second locking assembly and the coordinated structure of the fourth elastic body 41 can realize the action of pulling the injection head 5 out of the muscle under the drive of the fourth elastic body 41. At the same time, when the barrel 3 moves from the initial position to the liquid storage position, the second locking assembly cannot completely lock the third connecting rod 17. When the force applied to the first connecting rod 12 in the first direction exceeds a certain set value, the third connecting rod 17 can still break free from the restraint of the second locking assembly and move in the first direction. However, at this set value, the elastic force of the fourth elastic body 41 alone cannot completely lock the third connecting rod 17. The third connecting rod 17 is driven to move toward the first direction, so there is a certain gradient difference between the force pulling the first connecting rod 12 toward the first direction and the elastic force of the fifth elastic body 45, the elastic force of the second rolling body 38 or the elastic force of the second locking shell 44. Since the elastic body (such as the second locking shell 44) has elastic retreat when the third connecting rod 17 moves toward the first direction, the movement of the third connecting rod 17 toward the first direction can be achieved. Therefore, according to the needs of the actual injection operation, the movement of the third connecting rod 17 in two directions before and after injection can be achieved.

[0071] It should be noted that the first elastic body 2, the second elastic body 21, the third elastic body 39, the fourth elastic body 41, and the fifth elastic body 45 in the present invention are preferably springs, and can also be set as magnetic springs as needed in some application scenarios. The magnetic springs in the patent document CN211794929U can also be used to achieve the effects of the present invention. The first rolling body 20 and the second rolling body 38 in the present invention are preferably spherical, and cylindrical structures can also be used.

[0072] The working principle of the present invention is as follows:

[0073] like Fig.11 As shown, first, push the second protective cover 31 to move in the first direction, the sharp weapon 34 pierces the second liquid reservoir 35, and the disinfectant in the second liquid reservoir 35 flows out and soaks the disinfectant cotton 33. At this time, the second protective cover 31 is removed from the supporting shell 1, and human or machine drives the supporting shell 1 close to the human skin and makes the disinfectant cotton 33 wipe the human skin to achieve wiping disinfection. After disinfection, remove the first protective cover 29. The disinfectant cotton 33 is connected to the first protective cover 29. Therefore, after the first protective cover 29 is removed, the disinfectant cotton 33 is also removed together, and then the next injection operation is carried out.

[0074] Secondly, in the specific operation process, the first connecting rod 12 is first driven by human or electromechanical means to move in the first direction, thereby driving the first piston 4 and the cylinder 3 to move in the first direction. When the second blocking platform 27 moves to be blocked by the first blocking platform 26, the cylinder 3 stops at the liquid storage position, and the first elastomer 2 is stretched and has elastic potential energy for retraction. At this time, the first connecting rod 12 continues to drive the first piston 4 to move in the first direction, and the first piston 4 slides relative to the cylinder 3. The volume of the first accommodating space 7 becomes larger, and the medicine liquid is drawn into the first accommodating space 7 to achieve the extraction of medicine liquid. At the same time, the second connecting rod 12 pulls the second piston 11 to move synchronously with the first piston 4, thereby increasing the vacuum space of the second accommodating space 15. Under the action of the external atmospheric pressure, the second piston 11 tends to move in the second direction.

[0075] Again, the operating handle 24 is driven to unlock the first locking assembly. Driven by the retraction force of the first elastic body 2, the cylinder 3 can drive the first piston 4 and the second piston 11 to move rapidly in the second direction under the action of the friction between the piston and the inner wall of the cylinder and the negative pressure. When the cylinder 3 moves to be blocked by the support frame 19, the cylinder 3 stops at the injection position. This process allows the free end of the injection head 5 to be quickly inserted into the human muscle.

[0076] Then, if Fig.10 As shown, under the action of the external atmospheric pressure, the second piston 11 moves toward the second direction and then drives the first piston 4 and the second connecting rod 16 to continue to move toward the second direction through the first connecting rod 12. The liquid medicine in the first accommodating space 7 is squeezed by the first piston 4 and flows out through the injection head 5 to achieve intramuscular injection, and finally completes the injection operation of the liquid medicine into the human skin. In this process, since the second connecting rod 16 is buffered by the compressed elastic force of the fourth elastic body 41 during the movement of the second direction, the speed of the first piston 4 moving toward the second direction is more stable, and uniform injection is achieved.

[0077] Finally, when the first piston 4 has pushed out all the liquid medicine in the first accommodating space 7, the elastic potential energy of the first elastomer 2 is released. During this process, the fourth connecting rod 42 contacts the blocking member 40 and drives the blocking member 40 to move in the second direction. Since the blocking member 40 is an elastic-plastic member and cannot be restored after deformation, the blocking member 40 drives the second rolling body 38 to move slightly in the second direction and no longer reset. At this time, the friction between the third connecting rod 17 and the second rolling body 38 becomes smaller or disengaged, so that the elastic force of the fourth elastomer 41 can be stretched to drive the second connecting rod 16 to move in the first direction. Under the action of negative pressure and the friction force of the inner wall of the cylinder, the cylinder 3 is also driven by the second connecting rod 12 to move a certain displacement in the first direction, thereby pulling the injection head 5 out of the human muscle to complete the complete injection process.

[0078] The action of pulling out from human muscles in the present invention can also be completed by manpower according to different application environments.

[0079] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0080] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A syringe, characterized in that: It comprises a supporting shell (1), a first elastic body (2), and an injection assembly; The first elastic body (2) and the injection assembly are both mounted on the support shell (1), and the injection assembly is capable of extracting liquid medicine under the drive of a human drive mode or an electromechanical drive mode, and is capable of discharging the liquid medicine extracted from the injection assembly under the drive of the first elastic body (2) and the injection assembly itself; It also comprises a first locking assembly and a first liquid reservoir (9), the injection assembly comprising a barrel (3), a first piston (4) and an injection head (5), the barrel (3), the first locking assembly and the first liquid reservoir (9) are all mounted on the support shell (1), and the barrel (3) is movable relative to the support shell (1); The injection head (5) is mounted on the cylinder (3), a first cylinder chamber (6) is provided on the cylinder (3), a first piston end (10) is provided on the first piston (4), the first piston end (10) extends into the interior of the first cylinder chamber (6) and is capable of sliding relative to the cylinder (3), a first accommodating space (7) is formed between the first piston end (10) and the cylinder (3), and the first accommodating space (7) is connected to the first liquid reservoir (9) via a one-way valve (8); The two ends of the first elastic body (2) are respectively connected to the supporting shell (1) and the cylinder (3); The cylinder (3) comprises an initial position, a liquid storage position and an injection position. Under the drive of an external force, the first piston (4) can drive the cylinder (3) to move from the initial position toward a first direction and stop at the liquid storage position. At this time, the first piston (4) continues to move toward the first direction under the drive of the external force and draws a preset volume of liquid medicine in the first liquid reservoir (9) into the first containing space (7) and is then locked by the first locking assembly; When the first locking assembly is unlocked, the cylinder (3) moves from the liquid storage position to the injection position in the second direction under the drive of the elastic force of the first elastic body (2), and the first piston (4) moves in the second direction under the action of the external atmospheric pressure and allows the liquid medicine in the first accommodating space (7) to flow out through the injection head (5), wherein: The first direction is opposite to the second direction, and the initial position is between the liquid storage position and the injection position; The injection assembly further comprises a second piston (11) and a first connecting rod (12); the cylinder (3) is provided with a second cylinder chamber (13); The first piston (4) and the second piston (11) are both mounted on the first connecting rod (12); The second piston (11) is provided with a second piston end (14), the second piston end (14) extending into the second cylinder chamber (13) and forming a second accommodating space (15) with the cylinder (3); The first connecting rod (12) can drive the first piston (4) and the second piston (11) to move synchronously, thereby making the second accommodating space (15) larger or smaller, and the second accommodating space (15) is a vacuum environment; An injection end housing (28) and a first protective sleeve (29) are provided at one end of the support housing (1) facing the second direction.

2. The syringe according to claim 1, characterized in that The first locking assembly comprises a first rolling body (20), a second elastic body (21), a first locking housing (43) and a first driving body; The injection assembly further comprises a second connecting rod (16) and a third connecting rod (17), and the cylinder (3) is provided with a movement channel (18); One end of the second connecting rod (16) is mounted on the first connecting rod (12), and the other end of the second connecting rod (16) is connected to one end of the third connecting rod (17); The first locking shell (43) is mounted on the supporting shell (1) via a supporting frame (19); the other end of the third connecting rod (17) passes through the first locking shell (43) and forms a first wedge-shaped space with the first locking shell (43); a first rolling body (20) and a second elastic body (21) are arranged in sequence in the first wedge-shaped space along a first direction, and the width of the first wedge-shaped space gradually increases.

3. The syringe according to claim 2, characterized in that The first driving body comprises a lever body (22), a fixed shaft (23) and a switch member; The lever body (22) is rotatably mounted on the support frame (19) via the fixed shaft (23); the switch element is mounted on one end of the lever body (22); when the switch element is operated, one end of the lever body (22) can be driven to rotate around the fixed shaft (23), thereby causing the other end of the lever body (22) to drive the first rolling body (20) to move in a first direction, thereby unlocking the first locking assembly; The switch element adopts any of the following structures: - the switch member comprises an operating handle (24) and a curved elastic sheet (25), wherein the curved elastic sheet (25) is mounted on the supporting housing (1) and one side of the curved elastic sheet (25) is connected to one end of the lever body (22), and the other side of the curved elastic sheet (25) is connected to the operating handle (24); when the first locking assembly is locked, the bulging surface of the curved elastic sheet (25) protrudes toward one side of the operating handle (24); when the first locking assembly is unlocked, the bulging surface of the curved elastic sheet (25) protrudes toward one side of the lever body (22); The switch element comprises an operating handle (24), wherein the operating handle (24) is mounted on the supporting housing (1), and the operating handle (24) is an elastic-plastic element.

4. The syringe according to claim 2, characterized in that The support shell (1) is provided with a first blocking platform (26), and the cylinder (3) is provided with a second blocking platform (27) along the circumferential direction; When the cylinder (3) moves toward the first direction, the second blocking platform (27) is blocked by the first blocking platform (26), thereby causing the cylinder (3) to stop at the liquid storage position; When the barrel (3) moves towards the second direction, the barrel (3) is blocked by the support frame (19), thereby causing the barrel (3) to stop at the injection position.

5. The syringe according to claim 1, characterized in that The first protective sleeve (29) is detachably mounted on one end of the injection end housing (28) and together forms a third accommodating space (30); when the barrel (3) is in the initial position, the end of the injection head (5) passes through the other end of the injection end housing (28) and extends into the third accommodating space (30); One end of the support shell (1) facing the second direction is detachably covered with a second protective cover (31); A fourth accommodating space (32) is formed between the supporting shell (1) and the second protective cover (31), and a sterilizing cotton pad (33), a sharp object (34) and a second liquid storage container (35) are arranged in the fourth accommodating space (32); The disinfecting cotton (33) is connected to the first protective cover (29), and the second protective cover (31) can move toward the supporting shell (1) under the driving force of an external force, thereby driving the sharp weapon (34) to puncture the second liquid reservoir (35) and thereby allowing the disinfectant in the second liquid reservoir (35) to flow into the disinfecting cotton.

6. The syringe according to claim 2, characterized in that Also included is a second locking assembly, the second locking assembly comprising a second rolling body (38), a third elastic body (39), a blocking member (40), a second locking housing (44), and a first driving body; The second locking shell (44) is mounted on the support frame (19), and a second wedge-shaped space is formed between the third connecting rod (17) and the second locking shell (44), wherein the second wedge-shaped space is sequentially arranged with a third elastic body (39), a second rolling body (38), and a blocking member (40) along the first direction, and the width of the second wedge-shaped space gradually decreases; A fourth elastic body (41) is provided between the support frame (19) and the second connecting rod (16); A fourth connecting rod (42) is arranged on the second connecting rod (16), and when the second connecting rod (16) moves in the second direction, it can drive the fourth connecting rod (42) to move, thereby squeezing the blocking member (40) to deform and drive the second rolling body (38) to move in the second direction. At this time, the second rolling body (38) allows the third connecting rod (17) to move in the first direction; The second locking assembly adopts any of the following settings: - a fifth elastic body (45) is arranged between one end of the second locking shell (44) facing the first direction and the support frame (19); - the second rolling body (38) is an elastic body; -The second locking housing (44) is an elastic body.

7. The syringe according to claim 1, characterized in that It also includes a first driving body (36) and a second driving body (37), wherein the first driving body (36) and the second driving body (37) are both mounted on the supporting shell (1), and the first driving body (36) and the second driving body (37) adopt any of the following structures: - The first driving body (36) and the second driving body (37) are both smart materials or phase changers; - the first driving body (36) and the second driving body (37) are both magnetic driving bodies, wherein the first connecting rod (12) is a magnet or a ferromagnet, and the first driving body (36) is capable of magnetically driving the first connecting rod (12) to move in a first direction; The second driving body (37) is capable of magnetically driving the operating handle (24) of the first locking assembly to move; The first driving body (36) and the second driving body (37) are both electromagnets.

8. An injection platform, characterized in that: Installed with one or more syringes according to any one of claims 1 to 6, in an electromechanical drive mode, comprising a control mechanism and a power mechanism; The control mechanism is connected to the power mechanism by signal, and the power mechanism can drive the injection assembly to move.

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