Dual chamber injection device

Abstract

The invention relates to a double-chamber injection device, comprising a first driving mechanism, a second driving mechanism, a rotating mechanism, a first clutch mechanism and a second clutch mechanism, wherein the first clutch mechanism connects the rotating mechanism and the first driving mechanism, and the second clutch mechanism connects the rotating mechanism and the second driving mechanism. When the first clutch mechanism works, the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, and the second clutch mechanism does not work; when the second clutch mechanism works, the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism, the first clutch mechanism does not work, and the second infusion mechanism works. The first infusion mechanism and the second infusion mechanism in the invention are driven by a group of rotating mechanisms, the first infusion mechanism and the second infusion mechanism do not infuse liquid at the same time, and after the first infusion mechanism completes the infusion, the second infusion mechanism can immediately infuse, and the patient does not need to wait, thereby reducing the medical cost and alleviating the burden on the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a double-chamber injection device. Background Art

[0002] Syringes are a very common medical device. When using existing syringes, the needle of the syringe is usually inserted into the medicine bottle manually, and the piston rod is pulled to drive the piston movement, so as to use the air pressure difference to draw the liquid medicine into the syringe, and then the needle is inserted into the patient's vein, and then the piston rod is pressed to inject the liquid medicine into the patient's body. However, when injecting manually, it is easy to cause the injection speed to be too fast due to excessive force when pressing, which will impact the patient's veins and cause strong discomfort to the patient.

[0003] In order to solve the above problems, the Chinese patent with patent number 201920619597.6 discloses "An automatic syringe for neurologists", which includes an injection needle tube, an injection cavity is provided in the injection needle tube, a micro-stepping motor is fixedly connected to one end of the injection needle tube, a threaded rod that penetrates the injection needle tube is fixedly connected to the side wall of the micro-stepping motor close to the injection needle tube, and a piston is slidably connected in the injection cavity. The present invention adopts a micro-stepping motor as a power source, and drives the piston to move by means of a threaded connection, so that the movement speed of the piston is stable and easy to control, so the amount of extraction and injection of the liquid medicine is accurately controlled, and the automatic injection speed is slow, which will not cause discomfort to the patient, and the needle on the tube head can be easily replaced according to the needs of the user.

[0004] However, when using the above automatic syringe for injection, only one liquid medicine can be injected at a time. When another liquid medicine needs to be injected, the other liquid medicine needs to be loaded into the automatic syringe. The time of loading the liquid medicine is long, and the patient's waiting time is long. Especially in the cold winter, the exposed injection site of the patient is relatively cold, which increases the patient's pain, affects the patient's mood, and delays the treatment effect. In order to solve the above problems, medical staff will use two automatic syringes at the same time for separate injections. However, the two separate automatic syringes are inconvenient to distinguish, and the patient's name needs to be marked on both automatic syringes, which increases the workload of medical staff.

[0005] In order to reduce the workload of medical staff, two automatic injectors can be fixed on the same shell, so that only the patient's name needs to be marked on the shell, which reduces the workload of medical staff. However, the two automatic injectors include two micro motors, and the price of the micro motors is relatively high. The overall price of the automatic injectors is also relatively high, resulting in higher medical costs and a heavier burden on patients. Summary of the invention

[0006] The technical problem to be solved by the present invention is: in order to overcome the problem in the prior art that two automatic injectors are fixedly arranged on the same shell, the two automatic injectors include two micromotors, the price of the micromotors is relatively high, the price of the automatic injectors as a whole is relatively high, resulting in high medical costs and heavy burdens on patients, a dual-chamber injection device is provided.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a double-chamber injection device, comprising a housing, a first infusion mechanism and a second infusion mechanism are arranged in the housing, the first infusion mechanism comprises a first piston, the second infusion mechanism comprises a second piston, and the housing is further provided with:

[0008] First driving mechanism: the first driving mechanism is connected to the first piston;

[0009] Second driving mechanism: the second driving mechanism is connected to the second piston;

[0010] Rotating mechanism: the rotating mechanism is fixedly installed in the housing;

[0011] First clutch mechanism: the first clutch mechanism connects the rotating mechanism and the first driving mechanism for transmitting power;

[0012] Second clutch mechanism: the second clutch mechanism connects the rotating mechanism and the second driving mechanism for transmitting power;

[0013] When the first clutch mechanism is working: the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, the first driving mechanism drives the first piston to perform linear motion along the axial direction of the first infusion mechanism, and the second clutch mechanism does not work;

[0014] When the second clutch mechanism works: the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism, the second driving mechanism drives the second piston to perform linear motion along the axial direction of the second infusion mechanism, and the first clutch mechanism does not work.

[0015] The double-chamber injection device of the present invention comprises a first driving mechanism, a second driving mechanism, a rotating mechanism, a first clutch mechanism and a second clutch mechanism, wherein the first clutch mechanism connects the rotating mechanism and the first driving mechanism, and the second clutch mechanism connects the rotating mechanism and the second driving mechanism. When the first clutch mechanism is working, the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, and the first driving mechanism drives the first piston to perform linear motion along the axial direction of the first infusion mechanism. When the second clutch mechanism is not working, the first infusion mechanism completes the infusion work, and the piston in the second infusion mechanism does not move. When the second clutch mechanism is working, the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism. The first infusion mechanism and the second infusion mechanism are driven by a group of rotating mechanisms, and the first infusion mechanism and the second infusion mechanism are driven by a group of rotating mechanisms. The first infusion mechanism and the second infusion mechanism do not infuse liquid at the same time. When in use, different liquid medicines can be respectively loaded into the first infusion mechanism and the second infusion mechanism. After the infusion of the first infusion mechanism is completed, the second infusion mechanism can be infused immediately, and the patient does not need to wait. The present invention only includes a group of rotating mechanisms, which reduces the overall price of the present invention, reduces medical costs, and alleviates the burden on patients.

[0016] Furthermore, the first clutch mechanism and the second clutch mechanism are both electromagnetic clutch mechanisms;

[0017] The first clutch mechanism comprises a first driven gear, a first clutch gear, a first transmission gear and a first electromagnet, wherein the first driven gear is rotatably mounted in the housing and is transmission-connected to the rotating mechanism, the first electromagnet is fixedly mounted in the housing, the first clutch gear is slidably and rotationally arranged between the first driven gear and the first electromagnet, and meshing teeth that can mesh with each other are provided on two opposite surfaces of the first driven gear and the first clutch gear, a first reset assembly is arranged between the first electromagnet and the first clutch gear, and the first transmission gear is transmission-connected to the first clutch gear and the first driving mechanism;

[0018] The second clutch mechanism comprises a second driven gear, a second clutch gear, a second transmission gear and a second electromagnet. The second driven gear is rotatably mounted in the housing and is transmission-connected to the rotating mechanism. The second electromagnet is fixedly mounted in the housing. The second clutch gear is slidably and rotationally arranged between the second driven gear and the second electromagnet. Meshing teeth that can mesh with each other are provided on two opposite surfaces of the second driven gear and the second clutch gear. A second reset assembly is arranged between the second electromagnet and the second clutch gear. The second transmission gear is transmission-connected to the second clutch gear and the second driving mechanism.

[0019] When the first clutch mechanism is working and the second clutch mechanism is not working: the first electromagnet is not working, the first clutch gear is meshed with the first driven gear under the action of the first reset component, and the second electromagnet is working to adsorb the second clutch gear and separate it from the second driven gear;

[0020] When the second clutch mechanism works and the first clutch mechanism does not work: the second electromagnet does not work, the second clutch gear meshes with the second driven gear under the action of the second reset component, and the first electromagnet works to adsorb the first clutch gear and separate it from the first driven gear.

[0021] Furthermore, the first clutch mechanism and the second clutch mechanism are both mechanical clutch mechanisms;

[0022] The first clutch mechanism comprises a first driven gear, a first clutch gear, a first transmission gear and a first elastic component, wherein the first driven gear is rotatably mounted in the housing and is transmission-connected to the rotating mechanism, the first elastic component is disposed in the housing, the first clutch gear is slidably and rotationally disposed between the first driven gear and the first elastic component, two sets of first ratchet teeth with opposite rotation directions are provided on two opposite surfaces of the first driven gear and the first clutch gear and mesh with each other, and the first transmission gear is transmission-connected to the first clutch gear and the first driving mechanism;

[0023] The second clutch mechanism comprises a second driven gear, a second clutch gear, a second transmission gear and a second elastic component. The second driven gear is rotatably mounted in the housing and is transmission-connected to the rotating mechanism. The second elastic component is disposed in the housing. The second clutch gear is slidably and rotationally disposed between the second driven gear and the second elastic component. Two sets of second ratchet teeth with opposite rotation directions are provided on two opposite surfaces of the second driven gear and the second clutch gear and mesh with each other. The second transmission gear is transmission-connected to the second clutch gear and the second driving mechanism.

[0024] The first driven gear and the second driven gear have the same rotation direction, and the first ratchet tooth on the first driven gear and the second ratchet tooth on the second driven gear have opposite rotation directions;

[0025] When the first clutch mechanism is working and the second clutch mechanism is not working: the first driven gear rotates counterclockwise, and the first driven gear pushes the first clutch gear to rotate synchronously; the second driven gear idles counterclockwise, and the second clutch gear does not rotate with the second driven gear;

[0026] When the second clutch mechanism works and the first clutch mechanism does not work: the second driven gear rotates clockwise, and the second driven gear pushes the second clutch gear to rotate synchronously; the first driven gear idles clockwise, and the first clutch gear does not rotate with the first driven gear.

[0027] Furthermore, the rotating mechanism is a rotating assembly and a driving gear, the rotating assembly is fixedly installed in the housing, the rotating assembly drives the driving gear to rotate, and the driving gear is meshed with both the first driven gear and the second driven gear.

[0028] In order to simplify the overall installation structure of the present invention and reduce the volume of the shell of the present invention, the first driving mechanism includes a first output gear and a first screw rod. The first output gear is rotatably installed in the shell. The first screw rod is detachably installed on the first output gear. The first output gear is meshed with the first transmission gear. A first screw rod nut is transmission-mounted on the first screw rod. A first piston rod is coaxially and fixedly mounted on the first screw rod nut. The first piston rod is rotatably connected to the first piston.

[0029] In order to simplify the overall installation structure of the present invention and reduce the volume of the shell of the present invention, the second driving mechanism includes a second output gear and a second screw rod. The second output gear is rotatably installed in the shell. The second screw rod is detachably installed on the second output gear. The second output gear is meshed with the second transmission gear. A second screw rod nut is transmission-mounted on the second screw rod. A second piston rod is coaxially and fixedly mounted on the second screw rod nut. The second piston rod is rotatably connected to the second piston.

[0030] In order to realize that the first clutch gear is slidably and rotatably arranged between the first driven gear and the first electromagnet, the first clutch mechanism further comprises a first guide rod, a first guide hole is provided on the first electromagnet, the first guide rod is slidably inserted in the first guide hole, and the first clutch gear is rotatably mounted on the first guide rod;

[0031] In order to realize the sliding and rotation of the second clutch gear between the second driven gear and the second electromagnet, the second clutch mechanism also includes a second guide rod, a second guide hole is opened on the second electromagnet, the second guide rod is slidably inserted in the second guide hole, and the second clutch gear is rotatably installed on the second guide rod.

[0032] Furthermore, the first infusion mechanism also includes a first infusion cylinder and a first infusion pipeline, the first infusion cylinder is fixedly installed in the shell, the first infusion pipeline is detachably installed on the first infusion cylinder, and the first piston is slidably set in the first infusion cylinder, and the second infusion mechanism also includes a second infusion cylinder and a second infusion pipeline, the second infusion cylinder is fixedly installed in the shell, the second infusion pipeline is detachably installed on the second infusion cylinder, and the second piston is slidably set in the second infusion cylinder.

[0033] In order to use the present invention to achieve the injection function, the first infusion mechanism also includes a first infusion cylinder and a first injection needle, the first infusion cylinder is fixedly installed in the shell, the first injection needle is detachably installed on the first infusion cylinder, and the first piston is slidably set in the first infusion cylinder. The second infusion mechanism also includes a second infusion cylinder and a second injection needle, the second infusion cylinder is fixedly installed in the shell, the second injection needle is detachably installed on the second infusion cylinder, and the second piston is slidably set in the second infusion cylinder.

[0034] In order to realize the automatic operation of the present invention, the present invention further comprises a control component, and the control component is connected with the rotating mechanism by signal.

[0035] The beneficial effects of the present invention are as follows: the double-chamber injection device of the present invention comprises a first driving mechanism, a second driving mechanism, a rotating mechanism, a first clutch mechanism and a second clutch mechanism, the first clutch mechanism connects the rotating mechanism and the first driving mechanism, the second clutch mechanism connects the rotating mechanism and the second driving mechanism, when the first clutch mechanism works: the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, the first driving mechanism drives the first piston to perform linear motion along the axial direction of the first infusion mechanism, the second clutch mechanism does not work, the first infusion mechanism completes the infusion work, and the piston in the second infusion mechanism does not move; when the second clutch mechanism works: the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism The first infusion mechanism and the second infusion mechanism are driven by a group of rotating mechanisms, and the first infusion mechanism and the second infusion mechanism are driven by a group of rotating mechanisms. The first infusion mechanism and the second infusion mechanism do not infuse liquid at the same time. When in use, different liquid medicines can be respectively loaded into the first infusion mechanism and the second infusion mechanism. After the infusion of the first infusion mechanism is completed, the second infusion mechanism can be infused immediately, and the patient does not need to wait. The present invention only includes a group of rotating mechanisms, which reduces the overall price of the present invention, reduces medical costs, and alleviates the burden on patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 is a front view of Embodiment 1 of the present invention;

[0038] Figure 2 is a three-dimensional exploded view of the first infusion mechanism and the second infusion mechanism in Example 1 of the present invention;

[0039] Figure 3 is a three-dimensional assembly schematic diagram of the rotating mechanism, the first clutch mechanism and the second clutch mechanism in Example 1 of the present invention;

[0040] Figure 4 It is a three-dimensional assembly schematic diagram of the rotating mechanism, the first clutch mechanism, the second clutch mechanism, the first driving mechanism and the second driving mechanism in Example 2 of the present invention;

[0041] Figure 5 The present invention Figure 4 A top view of

[0042] Figure 6 is a two-dimensional assembly schematic diagram of the first clutch mechanism and the second clutch mechanism in Example 2 of the present invention;

[0043] Figure 7 This is a front view of Example 3 of the present invention;

[0044] Figure 8 The present invention Figure 7 Enlarged view of the AA point in the middle.

[0045] In the figure: 11. housing, 21. first piston, 22. first infusion cylinder, 23. first infusion pipeline, 24. first injection needle, 31. second piston, 32. second infusion cylinder, 33. second infusion pipeline, 34. second injection needle, 41. first driven gear, 42. first clutch gear, 43. first transmission gear, 44. first electromagnet, 45. first compression spring, 46. first guide rod, 51. second driven gear, 52. second clutch gear, 53. second transmission gear, 54. second electromagnet, 55. second compression spring, 56. second guide rod, 61. motor, 62. driving gear, 71. first output gear, 72. first screw rod, 73. first screw rod nut, 74. first piston rod, 81. second output gear, 82. second screw rod, 83. second screw rod nut, 84. second piston rod, 91. control assembly. DETAILED DESCRIPTION

[0046] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention. Embodiment 1:

[0047] like Figure 1-Figure 3A double-chamber injection device shown in the figure comprises a shell 11, a first infusion mechanism and a second infusion mechanism are arranged in the shell 11, the first infusion mechanism comprises a first piston 21, a first infusion cylinder 22 and a first infusion pipeline 23, the first infusion cylinder 22 is fixedly installed in the shell 11, and the first infusion pipeline 23 is detachably installed on the first infusion cylinder 22, and the detachable connection here can be a connection mode that is easy to disassemble, such as a threaded connection, a snap connection, etc.; the first piston 21 is slidably arranged in the first infusion cylinder 22; the second infusion mechanism comprises a second piston 31, a second infusion cylinder 32 and a second infusion pipeline 33, the second infusion cylinder 32 is fixedly installed in the shell 11, and the second infusion pipeline 33 is detachably installed on the second infusion cylinder 32, and the detachable connection here can be a connection mode that is easy to disassemble, such as a threaded connection, a snap connection, etc., and the second piston 31 is slidably arranged in the second infusion cylinder 32;

[0048] The housing 11 of the present invention is further provided with a first driving mechanism, a second driving mechanism, a rotating mechanism, a first clutch mechanism and a second clutch mechanism;

[0049] The first clutch mechanism and the second clutch mechanism are both mechanical clutch mechanisms;

[0050] The first clutch mechanism includes a first driven gear 41, a first clutch gear 42, a first transmission gear 43 and a first elastic component. The first driven gear 41 is rotatably mounted in the housing 11 and is transmission-connected to the rotating mechanism. The first elastic component is arranged in the housing 11. The first elastic component here can be a first compression spring 45. The first clutch gear 42 is slidably and rotationally arranged between the first driven gear 41 and the first elastic component. The first clutch gear 42 can be rotatably sleeved on the first guide rod. The first guide rod is fixedly mounted in the housing 11. The first compression spring 45 is sleeved outside the first guide rod. The first compression spring 45 pushes the first clutch gear 42 to always mesh with the first driven gear 41. Two sets of first ratchet teeth with opposite rotation directions are provided on the two opposite surfaces of the first driven gear 41 and the first clutch gear 42, which mesh with each other. The first transmission gear 43 transmission-connects the first clutch gear 42 and the first driving mechanism.

[0051] The second clutch mechanism includes a second driven gear 51, a second clutch gear 52, a second transmission gear 53 and a second elastic component. The second driven gear 51 is rotatably mounted in the housing 11 and is transmission-connected with the rotating mechanism. The second elastic component is arranged in the housing 11. The second elastic component here is a second compression spring 55. The second clutch gear 52 is slidably and rotationally arranged between the second driven gear 51 and the second elastic component. The second clutch gear 52 is rotatably sleeved on the second guide rod. The second guide rod is fixedly mounted in the housing 11. The second compression spring 55 is sleeved outside the second guide rod. The second compression spring 55 pushes the second clutch gear 52 to always mesh with the second driven gear 51. Two sets of second ratchet teeth with opposite rotation directions are provided on the two opposite surfaces of the second driven gear 51 and the second clutch gear 52, which mesh with each other. The second transmission gear 53 is transmission-connected with the second clutch gear 52 and the second driving mechanism.

[0052] The rotating mechanism is a rotating assembly and a driving gear 62. The rotating assembly can be a motor 61. The motor 61 is fixedly installed in the housing 11. The driving gear 62 is coaxially and fixedly installed at the output end of the motor 61. The motor 61 drives the driving gear 62 to rotate. The driving gear 62 is meshed with the first driven gear 41 and the second driven gear 51. The first driven gear 41 and the second driven gear 51 have the same rotation direction. The first ratchet on the first driven gear 41 and the second ratchet on the second driven gear 51 have opposite rotation directions.

[0053] The first driving mechanism includes a first output gear 71 and a first screw rod 72. The first output gear 71 is rotatably mounted in the housing 11. The first screw rod 72 is detachably mounted on the first output gear 71. The first output gear 71 is meshed with the first transmission gear 43. A first screw nut 73 is transmission-mounted on the first screw rod 72. A first piston rod 74 is coaxially and fixedly mounted on the first screw nut 73. The first piston rod 74 is rotatably connected to the first piston 21. The detachable connection between the first screw rod 72 and the first output gear 71 is as follows: a mounting hole with a hexagonal cross-section is provided on the end face of the first output gear 71. The cross-sectional shape of one end of the first screw rod 72 is also hexagonal. The first screw rod 72 is inserted into the mounting hole.

[0054] The second driving mechanism includes a second output gear 81 and a second screw rod 82. The second output gear 81 is rotatably mounted in the housing 11. The second screw rod 82 is detachably mounted on the second output gear 81. The second output gear 81 is meshed with the second transmission gear 53. A second screw nut 83 is transmission-mounted on the second screw rod 82. A second piston rod 84 is coaxially and fixedly mounted on the second screw nut 83. The second piston rod 84 is rotatably connected to the second piston 31. The detachable connection between the second screw rod 82 and the second output gear 81 is as follows: a mounting hole with a hexagonal cross-section is provided on the end face of the second output gear 81, and the cross-section shape of one end of the second screw rod 82 is also hexagonal, and the second screw rod 82 is inserted into the mounting hole.

[0055] In order to realize the automatic operation of the present invention, the present invention further comprises a control component 91, and the control component 91 is connected with the rotation mechanism signal.

[0056] When the first clutch mechanism is working, the second clutch mechanism is not working: the motor 61 rotates, driving the driving gear 62 to rotate, the driving gear 62 drives the first driven gear 41 to rotate counterclockwise, the first driven gear 41 pushes the first clutch gear 42 to rotate synchronously, the first clutch gear 42 drives the first transmission gear 43 to rotate, the first transmission gear 43 drives the first output gear 71 to rotate, the first output gear 71 drives the first screw rod 72 to rotate, after the first screw rod 72 rotates, the first screw rod nut 73 can move on the first screw rod 72, thereby driving the first piston rod 74 to move toward the first infusion pipeline 23, and finally driving the first piston 21 to push the liquid medicine out of the first infusion pipeline; in this process, the second driven gear 51 rotates counterclockwise, the second clutch gear 52 does not rotate with the second driven gear 51, and the second infusion mechanism is not working;

[0057] When the second clutch mechanism is working, the first clutch mechanism does not work: the motor 61 rotates, driving the driving gear 62 to rotate, the driving gear 62 drives the second driven gear 51 to rotate clockwise, the second driven gear 51 pushes the second clutch gear 52 to rotate synchronously, the second clutch gear 52 drives the second transmission gear 53 to rotate, the second transmission gear 53 drives the second output gear 81 to rotate, the second output gear 81 drives the second screw rod 82 to rotate, after the second screw rod 82 rotates, the second screw rod nut 83 can move on the second screw rod 82, thereby driving the second piston rod 84 to move toward the second infusion pipeline 33, and finally driving the second piston 31 to push the liquid medicine out of the second infusion pipeline; in this process, the first driven gear 41 idles clockwise, the first clutch gear 42 does not rotate with the first driven gear 41, and the first infusion mechanism does not work.

[0058] The double-chamber injection device of the present invention comprises a first driving mechanism, a second driving mechanism, a rotating mechanism, a first clutch mechanism and a second clutch mechanism. The first clutch mechanism connects the rotating mechanism and the first driving mechanism, and the second clutch mechanism connects the rotating mechanism and the second driving mechanism. When the first clutch mechanism is working, the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, and the first driving mechanism drives the first piston 21 to perform linear motion along the axial direction of the first infusion mechanism. The second clutch mechanism is not working. After the first infusion mechanism completes the infusion work, the first piston 21 returns to its original position, and the piston in the second infusion mechanism does not move. When the second clutch mechanism is working, the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism. The first clutch mechanism does not work, and the second piston 31 returns to its original position after the second infusion mechanism completes the infusion work, and the piston in the first infusion mechanism does not move; the first infusion mechanism and the second infusion mechanism in the present invention are driven by a set of rotating mechanisms, and the first infusion mechanism and the second infusion mechanism do not infuse liquid at the same time. When in use, different liquid medicines can be respectively loaded into the first infusion mechanism and the second infusion mechanism. After the infusion of the first infusion mechanism is completed, the second infusion mechanism can be infused immediately, and the patient does not need to wait; the present invention only includes a set of rotating mechanisms, which reduces the overall price of the present invention, reduces medical costs, and alleviates the burden on patients. Embodiment 2:

[0059] In order to realize automatic control, Figure 4-Figure 6 The difference between the embodiment 2 shown and the embodiment 1 is that both the first clutch mechanism and the second clutch mechanism are electromagnetic clutch mechanisms;

[0060] The first clutch mechanism includes a first driven gear 41, a first clutch gear 42, a first transmission gear 43 and a first electromagnet 44. The first driven gear 41 is rotatably mounted in the housing 11 and is transmission-connected to the rotating mechanism. The first electromagnet 44 is fixedly mounted in the housing 11. The first clutch gear 42 is slidably and rotationally arranged between the first driven gear 41 and the first electromagnet 44. Meshing teeth that can mesh with each other are provided on two opposite surfaces of the first driven gear 41 and the first clutch gear 42. A first reset component is arranged between the first electromagnet 44 and the first clutch gear 42. The first reset component is a first compression spring 45. The first transmission gear 43 is transmission-connected to the first clutch gear 42 and the first driving mechanism.

[0061] The second clutch mechanism includes a second driven gear 51, a second clutch gear 52, a second transmission gear 53 and a second electromagnet 54. The second driven gear 51 is rotatably mounted in the housing 11 and is transmission-connected to the rotating mechanism. The second electromagnet 54 is fixedly mounted in the housing 11. The second clutch gear 52 is slidably and rotationally arranged between the second driven gear 51 and the second electromagnet 54. Meshing teeth that can mesh with each other are provided on two opposite surfaces of the second driven gear 51 and the second clutch gear 52. A second reset component is arranged between the second electromagnet 54 and the second clutch gear 52. The second reset component is a second compression spring 55. The second transmission gear 53 is transmission-connected to the second clutch gear 52 and the second driving mechanism.

[0062] The first clutch mechanism also includes a first guide rod 46, a first guide hole is formed on the first electromagnet 44, the first guide rod 46 is slidably inserted in the first guide hole, and the first clutch gear 42 is rotatably mounted on the first guide rod 46; the second clutch mechanism also includes a second guide rod 56, a second guide hole is formed on the second electromagnet 54, the second guide rod 56 is slidably inserted in the second guide hole, and the second clutch gear 52 is rotatably mounted on the second guide rod 56. The control component 91 is signal-connected to the rotating mechanism, the first electromagnet 44 and the second electromagnet 54.

[0063] When the first clutch mechanism works and the second clutch mechanism does not work: the first electromagnet 44 does not work, the first clutch gear 42 meshes with the first driven gear 41 under the action of the first reset assembly, the motor 61 rotates, driving the driving gear 62 to rotate, the driving gear 62 drives the first driven gear 41 to rotate, the first driven gear 41 pushes the first clutch gear 42 to rotate synchronously, the first clutch gear 42 drives the first transmission gear 43 to rotate, the first transmission gear 43 drives the first output gear 71 to rotate, the first output gear 71 drives the first screw rod 72 to rotate, after the first screw rod 72 rotates, the first screw rod nut 73 can move on the first screw rod 72, thereby driving the first piston rod 74 to move toward the first infusion pipeline 23, and finally driving the first piston 21 to push the liquid medicine out of the first infusion pipeline; in this process, the second electromagnet 54 works, adsorbs the second clutch gear 52 and separates it from the second driven gear 51, the second driven gear 51 idles, the second clutch gear 52 does not rotate with the second driven gear 51, and the second infusion mechanism does not work;

[0064] When the second clutch mechanism works and the first clutch mechanism does not work: the second electromagnet 54 does not work, the second clutch gear 52 meshes with the second driven gear 51 under the action of the second compression spring 55, the motor 61 rotates, drives the driving gear 62 to rotate, the driving gear 62 drives the second driven gear 51 to rotate, the second driven gear 51 pushes the second clutch gear 52 to rotate synchronously, the second clutch gear 52 drives the second transmission gear 53 to rotate, the second transmission gear 53 drives the second output gear 81 to rotate, the second output gear 81 drives the second screw rod 82 to rotate, after the second screw rod 82 rotates, the second screw nut 83 can move on the second screw rod 82, thereby driving the second piston rod 84 to move toward the second infusion pipeline 33, and finally driving the second piston 31 to push the liquid medicine out of the second infusion pipeline; in this process, the first electromagnet 44 works, adsorbs the first clutch gear 42 and separates it from the first driven gear 41, the first driven gear 41 idles, the first clutch gear 42 does not rotate with the first driven gear 41, and the first infusion mechanism does not work. Embodiment 3:

[0065] In order to use the present invention to achieve the injection function, such as Figure 7 and Figure 8 The illustrated embodiment 3 differs from the embodiment 1 only in that: the first infusion mechanism further comprises a first infusion cylinder 22 and a first injection needle 24, the first infusion cylinder 22 is fixedly mounted in the housing 11, and the first injection needle 24 is detachably mounted on the first infusion cylinder 22, and the detachable connection here may be a threaded connection, a snap-on connection, or other connection methods that are easy to disassemble; the first piston 21 is slidably disposed in the first infusion cylinder 22, and the second infusion mechanism further comprises a second infusion cylinder 32 and a second injection needle 34, the second infusion cylinder 32 is fixedly mounted in the housing 11, and the second injection needle 34 is detachably mounted on the second infusion cylinder 32, and the detachable connection here may be a threaded connection, a snap-on connection, or other connection methods that are easy to disassemble; the second piston 31 is slidably disposed in the second infusion cylinder 32.

[0066] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A dual-chamber injection device, comprising a housing (11), wherein a first infusion mechanism and a second infusion mechanism are arranged in the housing (11), wherein the first infusion mechanism comprises a first piston (21), and the second infusion mechanism comprises a second piston (31), wherein: The housing (11) is also provided with: First driving mechanism: the first driving mechanism is connected to the first piston (21); Second driving mechanism: the second driving mechanism is connected to the second piston (31); Rotating mechanism: the rotating mechanism is fixedly installed in the housing (11); First clutch mechanism: the first clutch mechanism connects the rotating mechanism and the first driving mechanism for transmitting power; Second clutch mechanism: the second clutch mechanism connects the rotating mechanism and the second driving mechanism for transmitting power; When the first clutch mechanism is in operation, the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, and the first driving mechanism drives the first piston (21) to perform linear motion along the axial direction of the first infusion mechanism, and the second clutch mechanism does not operate; When the second clutch mechanism is in operation, the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism, and the second driving mechanism drives the second piston (31) to perform linear motion along the axial direction of the second infusion mechanism, and the first clutch mechanism does not operate; The first clutch mechanism and the second clutch mechanism are both electromagnetic clutch mechanisms; The first clutch mechanism comprises a first driven gear (41), a first clutch gear (42), a first transmission gear (43) and a first electromagnet (44); the first driven gear (41) is rotatably mounted in the housing (11) and is transmission-connected to the rotating mechanism; the first electromagnet (44) is fixedly mounted in the housing (11); the first clutch gear (42) is slidably and rotationally arranged between the first driven gear (41) and the first electromagnet (44); mutually meshing teeth are provided on two opposite surfaces of the first driven gear (41) and the first clutch gear (42); a first reset assembly is arranged between the first electromagnet (44) and the first clutch gear (42); and the first transmission gear (43) is transmission-connected to the first clutch gear (42) and the first driving mechanism; The second clutch mechanism comprises a second driven gear (51), a second clutch gear (52), a second transmission gear (53) and a second electromagnet (54); the second driven gear (51) is rotatably mounted in the housing (11) and is transmission-connected to the rotating mechanism; the second electromagnet (54) is fixedly mounted in the housing (11); the second clutch gear (52) is slidably and rotationally arranged between the second driven gear (51) and the second electromagnet (54); mutually meshing teeth are provided on two opposite surfaces of the second driven gear (51) and the second clutch gear (52); a second reset assembly is arranged between the second electromagnet (54) and the second clutch gear (52); and the second transmission gear (53) is transmission-connected to the second clutch gear (52) and the second driving mechanism; When the first clutch mechanism is in operation and the second clutch mechanism is not in operation: the first electromagnet (44) is not in operation, the first clutch gear (42) meshes with the first driven gear (41) under the action of the first reset assembly, and the second electromagnet (54) is in operation to attract and separate the second clutch gear (52) from the second driven gear (51); When the second clutch mechanism is in operation and the first clutch mechanism is not in operation: the second electromagnet (54) is not in operation, the second clutch gear (52) meshes with the second driven gear (51) under the action of the second reset assembly, and the first electromagnet (44) is in operation to attract and separate the first clutch gear (42) from the first driven gear (41); The rotating mechanism comprises a rotating assembly and a driving gear (62). The rotating assembly is fixedly mounted in the housing (11). The rotating assembly drives the driving gear (62) to rotate. The driving gear (62) is meshed with both the first driven gear (41) and the second driven gear (51).

2. The dual-chamber injection device according to claim 1, characterized in that: The first driving mechanism comprises a first output gear (71) and a first screw rod (72); the first output gear (71) is rotatably mounted in the housing (11); the first screw rod (72) is detachably mounted on the first output gear (71); the first output gear (71) is meshed with a first transmission gear (43); a first screw rod nut (73) is transmission-mounted on the first screw rod (72); a first piston rod (74) is coaxially and fixedly mounted on the first screw rod nut (73); and the first piston rod (74) is rotatably connected to the first piston (21).

3. The dual-chamber injection device according to claim 1, characterized in that: The second driving mechanism comprises a second output gear (81) and a second screw rod (82); the second output gear (81) is rotatably mounted in the housing (11); the second screw rod (82) is detachably mounted on the second output gear (81); the second output gear (81) is meshed with a second transmission gear (53); a second screw rod nut (83) is transmission-mounted on the second screw rod (82); a second piston rod (84) is coaxially and fixedly mounted on the second screw rod nut (83); and the second piston rod (84) is rotatably connected to the second piston (31).

4. The dual-chamber injection device according to claim 1, characterized in that: The first clutch mechanism further comprises a first guide rod (46), the first electromagnet (44) is provided with a first guide hole, the first guide rod (46) is slidably inserted in the first guide hole, and the first clutch gear (42) is rotatably mounted on the first guide rod (46); The second clutch mechanism also includes a second guide rod (56). The second electromagnet (54) is provided with a second guide hole. The second guide rod (56) is slidably inserted in the second guide hole. The second clutch gear (52) is rotatably mounted on the second guide rod (56).

5. The dual-chamber injection device according to claim 1, characterized in that: The first infusion mechanism further comprises a first infusion cylinder (22) and a first infusion pipeline (23); the first infusion cylinder (22) is fixedly mounted in the housing (11); the first infusion pipeline (23) is detachably mounted on the first infusion cylinder (22); the first piston (21) is slidably disposed in the first infusion cylinder (22); the second infusion mechanism further comprises a second infusion cylinder (32) and a second infusion pipeline (33); the second infusion cylinder (32) is fixedly mounted in the housing (11); the second infusion pipeline (33) is detachably mounted on the second infusion cylinder (32); the second piston (31) is slidably disposed in the second infusion cylinder (32).

6. The dual-chamber injection device according to claim 1, characterized in that: The first infusion mechanism further comprises a first infusion cylinder (22) and a first injection needle (24); the first infusion cylinder (22) is fixedly mounted in the housing (11); the first injection needle (24) is detachably mounted on the first infusion cylinder (22); the first piston (21) is slidably disposed in the first infusion cylinder (22); the second infusion mechanism further comprises a second infusion cylinder (32) and a second injection needle (34); the second infusion cylinder (32) is fixedly mounted in the housing (11); the second injection needle (34) is detachably mounted on the second infusion cylinder (32); the second piston (31) is slidably disposed in the second infusion cylinder (32).

7. The dual-chamber injection device according to claim 1, characterized in that: It also includes a control component (91), and the control component (91) is connected to the rotating mechanism by signal.

8. A dual-chamber injection device, comprising a housing (11), wherein a first infusion mechanism and a second infusion mechanism are arranged in the housing (11), wherein the first infusion mechanism comprises a first piston (21), and the second infusion mechanism comprises a second piston (31), wherein: The housing (11) is also provided with: First driving mechanism: the first driving mechanism is connected to the first piston (21); Second driving mechanism: the second driving mechanism is connected to the second piston (31); Rotating mechanism: the rotating mechanism is fixedly installed in the housing (11); First clutch mechanism: the first clutch mechanism connects the rotating mechanism and the first driving mechanism for transmitting power; Second clutch mechanism: the second clutch mechanism connects the rotating mechanism and the second driving mechanism for transmitting power; When the first clutch mechanism is in operation, the power of the rotating mechanism can be transmitted to the first driving mechanism through the first clutch mechanism, and the first driving mechanism drives the first piston (21) to perform linear motion along the axial direction of the first infusion mechanism, and the second clutch mechanism does not operate; When the second clutch mechanism is in operation, the power of the rotating mechanism can be transmitted to the second driving mechanism through the second clutch mechanism, and the second driving mechanism drives the second piston (31) to perform linear motion along the axial direction of the second infusion mechanism, and the first clutch mechanism does not operate; The first clutch mechanism and the second clutch mechanism are both mechanical clutch mechanisms; The first clutch mechanism comprises a first driven gear (41), a first clutch gear (42), a first transmission gear (43) and a first elastic component; the first driven gear (41) is rotatably mounted in the housing (11) and is transmission-connected to the rotating mechanism; the first elastic component is disposed in the housing (11); the first clutch gear (42) is slidably and rotationally disposed between the first driven gear (41) and the first elastic component; two sets of first ratchet teeth with opposite rotation directions are provided on two opposite surfaces of the first driven gear (41) and the first clutch gear (42) and mesh with each other; the first transmission gear (43) is transmission-connected to the first clutch gear (42) and the first driving mechanism; The second clutch mechanism comprises a second driven gear (51), a second clutch gear (52), a second transmission gear (53) and a second elastic component, wherein the second driven gear (51) is rotatably mounted in the housing (11) and is transmission-connected to the rotating mechanism, the second elastic component is arranged in the housing (11), the second clutch gear (52) is slidably and rotationally arranged between the second driven gear (51) and the second elastic component, two sets of second ratchet teeth with opposite rotation directions are provided on two opposite surfaces of the second driven gear (51) and the second clutch gear (52) and mesh with each other, and the second transmission gear (53) is transmission-connected to the second clutch gear (52) and the second driving mechanism; The first driven gear (41) and the second driven gear (51) have the same rotation direction, and the first ratchet tooth on the first driven gear (41) and the second ratchet tooth on the second driven gear (51) have opposite rotation directions; When the first clutch mechanism is in operation and the second clutch mechanism is not in operation: the first driven gear (41) rotates counterclockwise, and the first driven gear (41) drives the first clutch gear (42) to rotate synchronously; the second driven gear (51) idles counterclockwise, and the second clutch gear (52) does not rotate along with the second driven gear (51); When the second clutch mechanism is in operation and the first clutch mechanism is not in operation: the second driven gear (51) rotates clockwise, and the second driven gear (51) drives the second clutch gear (52) to rotate synchronously; the first driven gear (41) idles clockwise, and the first clutch gear (42) does not rotate along with the first driven gear (41); The rotating mechanism comprises a rotating assembly and a driving gear (62). The rotating assembly is fixedly mounted in the housing (11). The rotating assembly drives the driving gear (62) to rotate. The driving gear (62) is meshed with both the first driven gear (41) and the second driven gear (51).

9. The dual-chamber injection device according to claim 8, characterized in that: The first driving mechanism comprises a first output gear (71) and a first screw rod (72); the first output gear (71) is rotatably mounted in the housing (11); the first screw rod (72) is detachably mounted on the first output gear (71); the first output gear (71) is meshed with a first transmission gear (43); a first screw rod nut (73) is transmission-mounted on the first screw rod (72); a first piston rod (74) is coaxially and fixedly mounted on the first screw rod nut (73); and the first piston rod (74) is rotatably connected to the first piston (21).

10. The dual-chamber injection device according to claim 8, characterized in that: The second driving mechanism comprises a second output gear (81) and a second screw rod (82); the second output gear (81) is rotatably mounted in the housing (11); the second screw rod (82) is detachably mounted on the second output gear (81); the second output gear (81) is meshed with a second transmission gear (53); a second screw rod nut (83) is transmission-mounted on the second screw rod (82); a second piston rod (84) is coaxially and fixedly mounted on the second screw rod nut (83); and the second piston rod (84) is rotatably connected to the second piston (31).

11. The dual-chamber injection device according to claim 8, characterized in that: The first infusion mechanism further comprises a first infusion cylinder (22) and a first infusion pipeline (23); the first infusion cylinder (22) is fixedly mounted in the housing (11); the first infusion pipeline (23) is detachably mounted on the first infusion cylinder (22); the first piston (21) is slidably disposed in the first infusion cylinder (22); the second infusion mechanism further comprises a second infusion cylinder (32) and a second infusion pipeline (33); the second infusion cylinder (32) is fixedly mounted in the housing (11); the second infusion pipeline (33) is detachably mounted on the second infusion cylinder (32); the second piston (31) is slidably disposed in the second infusion cylinder (32).

12. The dual-chamber injection device according to claim 8, characterized in that: The first infusion mechanism further comprises a first infusion cylinder (22) and a first injection needle (24); the first infusion cylinder (22) is fixedly mounted in the housing (11); the first injection needle (24) is detachably mounted on the first infusion cylinder (22); the first piston (21) is slidably disposed in the first infusion cylinder (22); the second infusion mechanism further comprises a second infusion cylinder (32) and a second injection needle (34); the second infusion cylinder (32) is fixedly mounted in the housing (11); the second injection needle (34) is detachably mounted on the second infusion cylinder (32); the second piston (31) is slidably disposed in the second infusion cylinder (32).

13. The dual-chamber injection device according to claim 8, characterized in that: It also includes a control component (91), and the control component (91) is connected to the rotating mechanism by signal.

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