Injection device

Abstract

The invention is suitable for the technical field of medical instruments, and discloses an injection device which comprises a first machine body and a second machine body, the first machine body is used for installing a main body of a medical container, the second machine body comprises a shell and a clamping assembly, the clamping assembly is movably installed on the shell, and the clamping assembly is used for automatically adapting to and clamping a propelling device of the medical container. The first machine body drives the second machine body to control the propelling device to move. According to the injection device, the adaptability can be improved, and the injection device is suitable for various types of medical containers.

Description

Technical Field

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

[0002] At present, when using medical containers to inject liquid medicine into patients, there are two ways to withdraw liquid medicine and inject liquid medicine:

[0003] The first method is to manually push and pull the propulsion device of the medical container to make the propulsion device move back and forth inside the main body to expel the air inside the main body and absorb the medicine, and then install the medical container on the instrument to inject the medicine. However, this method requires additional medical staff when changing the medicine, and there are problems such as long time for changing the medicine, cumbersome repetitive operation steps, and increased risk of errors when manually sucking the medicine.

[0004] The second method uses an injection device such as a high-pressure injection pump to achieve automatic injection and withdrawal of liquid medicine. However, this method requires customization of a piston and a main body that match the push rod of the high-pressure injection pump to achieve the functions of injecting and withdrawing liquid medicine. It has problems such as low adaptability and inability to adapt to a variety of medical containers. Summary of the invention

[0005] The object of the present invention is to provide an injection device, which aims to solve the technical problem that the current injection device has low adaptability and cannot be adapted to a variety of medical containers.

[0006] To achieve the above object, the solution provided by the present invention is:

[0007] An injection device comprises a first body and a second body, wherein the first body is used to mount a main body of a medical container, the second body comprises a shell and a clamping assembly, the clamping assembly is movably mounted on the shell, the clamping assembly is used to automatically adapt to a propulsion device that clamps the medical container, and the first body controls the movement of the propulsion device by driving the second body.

[0008] Furthermore, the clamping assembly includes a radial clamping mechanism with an adjustable radial clamping angle, and the radial clamping mechanism is used to automatically adapt and clamp the outer periphery of the propulsion device according to the radial size of the propulsion device.

[0009] Further, the radial clamping mechanism includes a driving mechanism and two clamping members, and a clamping opening is formed between the two clamping members;

[0010] The two clamping members are used to rotate towards or away from each other under the drive of the driving mechanism to adjust the radial clamping angle of the clamping opening.

[0011] Further, the driving mechanism includes a first driving member, a transmission assembly and two transmission shafts, and the first driving member is respectively connected to the two transmission shafts through the transmission assembly to respectively drive the two transmission shafts to rotate;

[0012] The two transmission shafts correspond to the two clamping members one by one, and the two clamping members are respectively driven by the two transmission shafts to rotate in opposite directions or toward each other.

[0013] Furthermore, the second body further comprises a radial angle detection mechanism, the radial angle detection mechanism is used to detect an actual radial angle change of the radial clamping mechanism, and when the actual radial angle change is less than a preset radial angle change, the radial clamping mechanism clamps the outer periphery of the propulsion device at a current radial clamping angle;

[0014] And / or, the second body further includes a radial angle limiting mechanism, and the radial angle limiting mechanism is used to limit the rotation of the radial clamping mechanism to limit the radial clamping angle of the radial clamping mechanism.

[0015] Furthermore, the clamping assembly also includes an axial clamping mechanism, which is used to drive the radial clamping mechanism to move toward or away from the outer shell, so that the radial clamping mechanism and the outer shell automatically adapt to clamp the pressure handle of the propulsion device along a first direction, and the first direction is the axial direction of the propulsion device.

[0016] Furthermore, the axial clamping mechanism includes a rotating member and an elastic member arranged along the first direction, and the rotating member is used to drive the radial clamping mechanism to move toward or away from the outer shell when rotating, so as to adjust the distance between the radial clamping mechanism and the outer shell so that the distance corresponds to the thickness of the pressing handle, and the elastic member is used to make the radial clamping mechanism, the pressing handle and the outer shell abut in sequence.

[0017] Furthermore, the axial clamping mechanism also includes a docking piece, the rotating piece is installed on the radial clamping mechanism, the docking piece is installed on the outer shell, the rotating piece has an inclined protrusion on the side close to the outer shell, the docking piece has a groove corresponding to the protrusion, and the protrusion is used to embed or withdraw from the groove when the rotating piece rotates to adjust the distance between the radial clamping mechanism and the outer shell.

[0018] Furthermore, the injection device also includes a force transmission mechanism arranged in the shell, and the force transmission mechanism is used to transmit the reaction force exerted on the radial clamping mechanism to the shell, and the reaction force is the force applied by the propulsion device to the radial clamping mechanism along the axial direction of the propulsion device.

[0019] Furthermore, the force transmission mechanism includes a guide column, which is protruded inside the outer shell. When the radial clamping mechanism is subjected to the reaction force applied by the propulsion device in a direction away from the outer shell, the radial clamping mechanism presses against the guide column and transmits the reaction force to the outer shell through the guide column.

[0020] The injection device provided by the present invention has the following beneficial effects:

[0021] In this embodiment, the clamping assembly can automatically adapt to the size of the propulsion device to adapt to clamping different propulsion devices, so that the injection device can adapt to various types of medical containers, thereby improving the adaptability of the injection device. At the same time, compared with manual operation, the method of sucking and injecting the liquid medicine in this embodiment can shorten the replacement time and reduce the risk of human error when replacing the liquid medicine, thereby improving the work efficiency of medical staff without the need for additional medical staff; compared with the method of using a high-pressure injection pump to automatically inject and withdraw medicine, it has high adaptability, low cost, simple operation, and no need to customize consumables, thereby reducing the patient's use cost and solving the problem that non-high-pressure medical containers in the prior art cannot inject and withdraw medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the installation structure of the medical container and the injection device provided in an embodiment of the present invention;

[0024] Figure 2 is a schematic structural diagram of an injection device provided by an embodiment of the present invention;

[0025] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0026] Figure 4 is a partial structural schematic diagram of an injection device provided by an embodiment of the present invention;

[0027] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure along the BB direction;

[0028] Figure 6 yes Figure 4 Schematic diagram of the explosion structure;

[0029] Figure 7 yes Figure 6 A local enlarged schematic diagram of point a in the middle;

[0030] Figure 8 yes Figure 6 A partial enlarged schematic diagram of point b in the middle;

[0031] Fig. 9 It is a schematic structural diagram of a radial clamping mechanism in an injection device provided by an embodiment of the present invention being assembled in a housing;

[0032] Fig.10 is a schematic structural diagram of a radial clamping mechanism in an injection device provided in an embodiment of the present invention;

[0033] Fig.11 It is a schematic diagram of the assembly structure of the clamping member and the rotating member in the injection device provided in an embodiment of the present invention.

[0034] Description of Figure Numbers:

[0035] 100, injection device; 200, medical container; 201, main body; 202, propulsion device; 203, needle; 204, pressing handle; 10, first body; 20, second body; 30, housing; 40, clamping assembly; 50, induction switch; 60, radial angle limiting mechanism; 61, notch; 62, limiting member; 70, force transmission mechanism; 71, guide column;

[0036] 1. radial clamping mechanism; 11. driving mechanism; 111. first driving member; 112. transmission assembly; 1121. output gear; 1122. transmission gear; 1122a. first transmission gear; 1122b. second transmission gear; 11221. wheel body; 11222. external teeth; 113. transmission shaft; 114. mounting seat;

[0037] 12. Clamping member; 121. Rotating portion; 122. Clamping portion; 123. Fixing hole; 124. Annular protrusion; 125. Insertion hole; 13. Clamping opening;

[0038] 2. Axial clamping mechanism; 21. Rotating member; 22. Elastic member; 23. Docking member; 24. Protrusion; 25. Groove; 26. Inner side surface; 27. Outer side surface; 28. Connecting column; 29. ​​Positioning column;

[0039] 3. Connecting column; 4. Shell; 5. Moving mechanism; 51. Second driving member; 52. Moving member; 53. Moving rod; 6. Mounting portion; 7. Support seat; 8. Display screen; 9. Guide mechanism. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0042] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0043] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] like Figure 1 and Figure 2 As shown, the injection device 100 provided in this embodiment includes a first body 10 and a second body 20, the first body 10 is used to install the main body 201 of the medical container 200, the second body 20 includes a shell 30 and a clamping assembly 40, the clamping assembly 40 is movably mounted on the shell 30, the clamping assembly 40 is used to automatically adapt to clamp the propulsion device 202 of the medical container 200, and the first body 10 controls the movement of the propulsion device 202 by driving the second body 20. The medical container 200 in this embodiment is a syringe, the main body 201 is a syringe, and the propulsion device 202 is a piston rod.

[0045] In this embodiment, when the medical container 200 is installed on the injection device 100, the main body 201 of the medical container 200 is first installed on the first body 10, and then the clamping assembly 40 clamps the propulsion device 202 of the medical container 200. After the medical container 200 is installed, when it is necessary to inject or absorb the liquid medicine, the first body 10 can drive the second body 20 to move, so as to drive the propulsion device 202 to move relative to the main body 201. For example, the propulsion device 202 moves relative to the main body 201 toward or away from the needle 203 of the medical container 200, so as to inject or absorb the liquid medicine.

[0046] In this embodiment, the clamping assembly 40 can automatically adapt to the size of the propulsion device 202 to adapt to clamp different propulsion devices 202, so that the injection device 100 can adapt to various types of medical containers 200, thereby improving the adaptability of the injection device 100. At the same time, compared with manual operation, the method of sucking and injecting the liquid medicine in this embodiment can shorten the replacement time and reduce the risk of human error when replacing the liquid medicine, thereby improving the work efficiency of medical staff without the need for additional medical staff; compared with the method of automatically injecting and withdrawing medicines using a high-pressure injection pump, the injection device 100 of this embodiment can be adapted to ordinary medical containers, with high adaptability, low cost, simple operation, and no need to customize consumables, thereby reducing the cost of use for patients, and solving the problem that non-high-pressure medical containers in the prior art cannot inject and withdraw medicines.

[0047] like Figure 1 and Figure 2 As shown, in some embodiments, the clamping assembly 40 includes a radial clamping mechanism 1 with an adjustable radial clamping angle, and the radial clamping mechanism 1 is used to automatically adapt and clamp the outer periphery of the propulsion device 202 according to the radial size of the propulsion device 202, so as to clamp the propulsion devices 202 of different radial sizes and improve the adaptability to different medical containers 200.

[0048] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, the radial clamping mechanism 1 includes a driving mechanism 11 and two clamping members 12, and a clamping opening 13 is formed between the two clamping members 12; the two clamping members 12 are used to rotate toward or away from each other under the drive of the driving mechanism 11 to adjust the radial clamping angle of the clamping opening 13, thereby adjusting the size of the radial clamping space formed by the two clamping members 12, and then adapting to propulsion devices 202 of different radial sizes. Exemplarily, the clamping member 12 is a claw.

[0049] like Figure 1 , Figure 4 and Figure 6As shown, in some embodiments, the driving mechanism 11 includes a first driving member 111, a transmission assembly 112 and two transmission shafts 113. The first driving member 111 is respectively connected to the two transmission shafts 113 through the transmission assembly 112 to transmit the power of the first driving member 111 to the two transmission shafts 113, thereby driving the two transmission shafts 113 to rotate respectively; the two transmission shafts 113 correspond to the two clamping members 12 one by one, and the two clamping members 12 rotate under the drive of the two transmission shafts 113 to rotate toward or away from each other, thereby adjusting the angle of the clamping opening 13. Exemplarily, the first driving member 111 is a motor.

[0050] like Figure 6 and Fig.10 As shown, in a specific embodiment, the transmission assembly 112 includes an output gear 1121 and two transmission gears 1122. The first driving member 111 drives and connects the output gear 1121 to drive the output gear 1121 to rotate; the two transmission gears 1122 are meshed, and the output gear 1121 is meshed with one of the two transmission gears 1122 so that one of the two transmission gears 1122 drives the other to rotate, so that the power of the first driving member 111 can be transmitted to the two transmission gears 1122 respectively; the two transmission gears 1122 correspond to the two transmission shafts 113 one by one, and the transmission shafts 113 are penetrated and connected to the transmission gears 1122 to rotate under the drive of the transmission gears 1122. Further, the driving mechanism 11 also includes a mounting seat 114 for mounting the first driving member 111, and the mounting seat 114 is accommodated in the housing 30.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments, the second body 20 further includes a radial angle detection mechanism (not shown), which is used to detect the actual radial angle change of the radial clamping mechanism 1, so as to obtain the actual radial angle change of the radial clamping mechanism 1 in real time, so as to continue to reduce the radial clamping angle of the clamping mechanism when the actual radial angle change is greater than the preset radial angle change. Specifically, the two clamping members 12 are adjusted to rotate toward each other. When the actual radial angle change is less than the preset radial angle change, the radial clamping mechanism 1 clamps the outer periphery of the propulsion device 202 at the current radial clamping angle, so as to avoid the phenomenon that the propulsion device 202 is damaged due to the radial clamping angle being too small, and to avoid the phenomenon that the propulsion device 202 cannot be clamped due to the radial clamping angle being too large. Exemplarily, the radial angle detection mechanism is an electronic angle meter.

[0052] It should be understood that the preset radial angle change can be set according to actual needs, for example, the corresponding preset radial angle change can be set according to the radial dimensions of different propulsion devices 202, and it can be ensured that when the actual radial angle change is less than the preset radial angle change, the radial clamping mechanism 1 clamps the propulsion device 202 with an appropriate clamping force without damaging the propulsion device 202 or clamping the propulsion device 202 unstable.

[0053] like Figure 1 and Figure 2 As shown, in a specific embodiment, the injection device further includes a control system (not shown), which is used to control the first body 10 and the clamping assembly 40 to improve the automation of the injection device. Further, the second body 20 further includes a sensor switch 50, which is arranged on a side of the housing 20 facing the first body 10 and is spaced apart from the clamping assembly 40. Before the clamping assembly 40 clamps the propulsion device 202, the first body 10 drives the second body 20 to move toward the direction close to the needle 203, so as to drive the sensor switch 50 to move toward the direction close to the pressing handle 204 of the propulsion device 202. When the sensor switch 50 contacts the side of the pressing handle 204 away from the propulsion device 202, the control system controls the clamping assembly 40 to clamp the propulsion device 202.

[0054] like Figure 1 and Fig. 9 As shown, in some embodiments, the second body 20 also includes a radial angle limiting mechanism 60, which is used to limit the rotation of the radial clamping mechanism 1 to limit the radial clamping angle of the radial clamping mechanism 1, so that the radial clamping mechanism 1 can clamp the propulsion device 202 with an appropriate clamping force to avoid the phenomenon that the propulsion device 202 is damaged due to a too small radial clamping angle, and to avoid the phenomenon that the propulsion device 202 cannot be clamped due to a too large radial clamping angle.

[0055] like Figure 6 , Fig. 9 and Fig.10 As shown, in a specific embodiment, the transmission assembly 112 is used to rotate under the drive of the first driving member 111, and the radial angle limiting mechanism 60 is used to limit the rotation angle of the transmission assembly 112 to limit the rotation angle of the two transmission shafts 113 respectively, thereby limiting the rotation angle of the two clamping members 12, and further limiting the size of the radial clamping angle.

[0056] Specifically, in combination with an embodiment in which the transmission assembly 112 includes an output gear 1121 and two transmission gears 1122, each transmission gear 1122 includes a wheel body 11221 and external teeth 11222, the transmission shaft 113 is penetrated and connected to the wheel body 11221, the external teeth 11222 surround the outer circumferential surface of the wheel body 11221, and the radial angle limiting mechanism 60 includes a notch 61 opened on the external teeth 11222 to separate the two opposite ends of the external teeth 11222 in the circumferential direction of the wheel body 11221, so that the transmission gear 1122 rotates within the circumferential size range of the external teeth 11222, thereby limiting the rotation angle of the transmission gear 1122, thereby limiting the rotation angle of the transmission shaft 113 and the clamping member 12.

[0057] Furthermore, the transmission assembly 112 is accommodated in the housing 30, and the radial angle limiting mechanism 60 further includes a limiting member 62 disposed in the housing 30, and the limiting member 62 may be a limiting plate, and the two transmission gears 1122 are respectively a first transmission gear 1122a and a second transmission gear 1122b, the first transmission gear 1122a is meshed with the output gear 1121, and the second transmission gear 1122b is located on a side of the first transmission gear 1122a away from the output gear 1121, and the limiting member 62 is arranged along the second transmission gear 1122a. The gear 1122b radially extends into the notch 61 of the second transmission gear 1122b so as to abut against one circumferential end portion of the outer tooth 11222 of the second transmission gear 1122b or the other circumferential end portion of the outer tooth 11222 when the second transmission gear 1122b rotates, so that the second transmission gear 1122b rotates within the range of the circumferential length of the wheel body 11221 occupied by the notch 61, thereby limiting the rotation angle of the second transmission gear 1122b, and further limiting the rotation angle of the first transmission gear 1122a.

[0058] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, the clamping assembly 40 also includes an axial clamping mechanism 2, which is used to drive the radial clamping mechanism 1 to move toward or away from the outer shell 30, so that the radial clamping mechanism 1 and the outer shell 30 automatically adapt to the pressure handle 204 of the clamping propulsion device 202 along the first direction, and the first direction is the axial direction of the propulsion device 202.

[0059] In this embodiment, when installing the medical container 200, in addition to automatically adapting and clamping the propulsion device 202 according to the radial size of the propulsion device 202, the distance between the radial clamping mechanism 1 and the shell 30 can be adjusted according to the different thicknesses of the pressing handle 204 along the first direction, so that the radial clamping mechanism 1 and the shell 30 can clamp the pressing handle 204 of different thicknesses, thereby improving the adaptability of the injection device 100, so that the injection device 100 can adapt to various types of medical containers 200. At the same time, on the basis of the main body 201 installed on the first body 10 and the radial clamping mechanism 1 radially clamping the propulsion device 202, the radial clamping mechanism 1 and the shell 30 also axially clamp the pressing handle 204 together, which can reduce the risk of the medical container 200 falling off.

[0060] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, the axial clamping mechanism 2 includes a rotating member 21 and an elastic member 22 arranged along a first direction, the rotating member 21 is used to drive the radial clamping mechanism 1 to move toward or away from the housing 30 when rotating, so as to adjust the distance between the radial clamping mechanism 1 and the housing 30, so that the distance corresponds to the thickness of the pressing handle 204, so that the radial clamping mechanism 1 and the housing 30 can adapt to the pressing handle 204 of different thicknesses, and then the radial clamping mechanism 1 and the housing 30 can clamp the pressing handle 204 of different thicknesses, and the elastic member 22 is used to make the radial clamping mechanism 1, the pressing handle 204 and the housing 30 abut in sequence, so that when the radial clamping mechanism 1 and the housing 30 clamp the pressing handle 204, the radial clamping mechanism 1 is close to one axial side of the pressing handle 204, and the housing 30 is close to the other axial side of the pressing handle 204, so as to eliminate the gap error caused by the difference in thickness of different pressing handles 204. Exemplarily, the elastic member 22 is a spring.

[0061] It can be known that when the injection device 100 is used to inject the drug solution, the second body 20 moves under the drive of the first body 10 to drive the propulsion device 202 to move in the direction close to the needle 203. After the medical container 200 is connected to the infusion tube (not shown), a liquid level difference will be formed. Under the action of atmospheric pressure, the pressing handle 204 is easy to move in the direction close to the needle 203 by itself. Therefore, the elastic member 22 is used to apply a force to the radial clamping mechanism 1, and the direction of the force is toward the shell 30, so that the radial clamping mechanism 1 has a tendency to move in the direction of the shell 30, and even the radial clamping mechanism 1 can slightly move in the direction close to the shell 30 to press against the pressing handle 204, which not only realizes the radial clamping mechanism 1, the pressing handle 204 and the shell 30 to abut in sequence in the first direction, but also avoids the problems of precision inaccuracy caused by the pressing handle 204 moving in the direction close to the needle 203 by itself, and prevents the medical risks caused by the siphon effect of the medical container 200.

[0062] like Figure 1 , Figure 2 and Figure 6 As shown, in a specific embodiment, when the injection device 100 is used to inject liquid medicine, the elastic member 22 applies a force toward the housing 30 to the radial clamping mechanism 1, and can also keep the pressing handle 204 in contact with the sensing switch 50, so that the control system can determine that the injection device 100 is in the liquid medicine injection state.

[0063] like Figure 1 , Figure 2 and Figure 6 As shown, combined with Figure 7 In some embodiments, the axial clamping mechanism 2 also includes a docking piece 23, the rotating member 21 is installed on the radial clamping mechanism 1, the docking piece 23 is installed on the outer shell 30, the rotating member 21 has an inclined protrusion 24 on the side close to the outer shell 30, and the docking piece 23 has a groove 25 corresponding to the protrusion 24. The protrusion 24 is used to embed into or withdraw from the groove 25 when the rotating member 21 rotates, so as to adjust the distance between the radial clamping mechanism 1 and the outer shell 30.

[0064] In this embodiment, the radial clamping mechanism 1 drives the rotating part 21 to rotate when rotating. At the same time, the rotating part 21 can drive the protrusion 24 to rotate and embed into the groove 25 corresponding to the protrusion 24 during the rotation process, thereby reducing the distance between the radial clamping mechanism 1 and the outer shell 30 in the first direction; the rotating part 21 can also drive the protrusion 24 to rotate and exit the groove 25 corresponding to the protrusion 24 during the rotation process, thereby increasing the distance between the radial clamping mechanism 1 and the outer shell 30 in the first direction. In this way, the distance between the radial clamping mechanism 1 and the outer shell 30 can be increased or decreased according to the actual thickness of the pressing handle 204 to adapt to the pressing handle 204 of different thicknesses.

[0065] like Figure 1 , Figure 2 and Figure 6 As shown, combined with Figure 7 In a specific embodiment, there are two rotating members 21 and two docking members 23. The two rotating members 21 and the two docking members 23 correspond one to one with the two clamping members 12 of the radial clamping mechanism 1. The protrusion 24 is used to embed in or withdraw from the groove 25 when the rotating member 21 rotates to adjust the distance between the clamping member 12 and the housing 30, so that the clamping member 12 and the housing 30 can clamp the pressure handle 204 of different thicknesses along the first direction.

[0066] like Figure 1 , Figure 6 and Figure 7 As shown, combined with Fig.11In a specific embodiment, the number of the protrusions 24 is multiple, such as two or three, etc., which is not specifically limited in this embodiment. The multiple protrusions 24 are arranged at intervals around the rotation center of the clamp 12. Specifically, the multiple protrusions 24 are arranged around the circumference of the transmission shaft 113. In some embodiments, the multiple protrusions 24 correspond to the multiple grooves 25 one by one, and each groove 25 has an inner side surface 26 arranged obliquely. In the same groove 25, the angle between the inner side surface 26 and the bottom surface of the groove 25 is an obtuse angle. The protrusion 24 can be embedded in or withdrawn from the groove 25 under the guidance of the inner side surface 26 of the groove 25; the side wall of each groove 25 has a top surface connected to the inner side surface 26. In the same groove 25, the connection between the top surface and the inner side surface 26 is an arc surface, which facilitates the protrusion 24 to slide from the top surface of the groove 25 to the inclined surface or from the inclined surface of the groove 25 to the top surface. Furthermore, each protrusion 24 has an outer side surface 27 that is arranged obliquely. When the protrusion 24 is inserted into or withdrawn from the groove 25 , the outer side surface 27 slides on the inner side surface 26 .

[0067] like Figure 1 and Figure 6 As shown, in a specific embodiment, the clamping member 12 is connected to the rotating member 21. The clamping member 12 is used to rotate under the drive of the driving mechanism 11 to drive the rotating member 21 to rotate. The rotating member 21 is used to drive the clamping member 12 to move in a direction close to or away from the housing 30 during rotation, so as to adjust the distance between the clamping member 12 and the housing 30. The two ends of the elastic member 22 respectively abut against the housing 30 and the transmission component 112 of the driving mechanism 11 to apply a force toward the housing 30 to the transmission component 112, thereby driving the clamping member 12 to abut against the pressing handle 204 in a direction close to the housing 30, and then driving the pressing handle 204 to abut against the housing 30, so that the clamping member 12, the pressing handle 204 and the housing 30 are abutted in sequence.

[0068] like Figures 6 to 8 As shown, combined with Fig.11In a specific embodiment, the clamping member 12 includes a rotating portion 121 and a clamping portion 122. The rotating portion 121 is fixed to the rotating member 21. The rotating portion 121 is provided with a fixing hole 123. The end of the transmission shaft 113 away from the transmission assembly 112 passes through the housing 30 and the rotating member 21 in sequence to be fixed in the fixing hole 123, thereby fixing the clamping member 12 and the transmission shaft 113. Further, an annular protrusion 124 is provided in the fixing hole 123. The side of the rotating member 21 away from the housing 30 is provided with a plug-in column 28. The annular protrusion 124 is provided with a plug-in hole 125 corresponding to the plug-in column 28. The plug-in column 28 is plugged into the plug-in hole 125 to fix the rotating member 21 to the annular protrusion 124. Specifically, the number of the plug-in columns 28 is multiple, and the multiple plug-in columns 28 are arranged around the rotation center of the rotating portion 121. In a specific embodiment, the number of the plug-in posts 28 is four, wherein a positioning post 29 is provided between two of the plug-in posts 28, and the annular protrusion 124 is provided with a positioning hole (not shown) corresponding to the position of the positioning post 29, and the positioning post 29 is inserted into the positioning hole to determine the installation position of the rotating member 21 and the rotating part 121, so as to facilitate the assembly of the rotating member 21 and the rotating part 121.

[0069] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the injection device 100 also includes a force transmission mechanism 70 disposed in the shell 30, and the force transmission mechanism 70 is used to transmit the reaction force exerted on the radial clamping mechanism 1 to the shell 30, and the reaction force is the force applied by the propulsion device 202 to the radial clamping mechanism 1 along the axial direction of the propulsion device 202.

[0070] It can be known that when the injection device 100 is used to absorb the liquid medicine, the radial clamping mechanism 1 clamps the propulsion device 202, and driven by the second body 20, the radial clamping mechanism 1 drives the propulsion device 202 to move in the direction away from the needle 203 inside the main body 201. In this process, the propulsion device 202 applies a reaction force away from the shell 30 to the radial clamping mechanism 1. Specifically, when the liquid medicine is absorbed, the inside of the main body 201 is equivalent to being evacuated to generate suction. The propulsion device 202 is subjected to the suction inside the main body 201 and increases the reaction force applied to the radial clamping mechanism 1, which easily causes the radial clamping mechanism 1 to be deformed by force. Therefore, the present embodiment is provided with a force transmission mechanism 70, which is used to transmit the reaction force received by the radial clamping mechanism 1 to the shell 30, thereby avoiding the phenomenon that the radial clamping mechanism 1 is deformed by force to a certain extent and causing the medical container 200 to be detached, and reducing the risk of the medical container 200 falling off.

[0071] like Figure 1 and Figure 2As shown, in a specific embodiment, when the injection device 100 is used to absorb liquid medicine, the propulsion device 202 is subjected to the suction force inside the main body 201, which drives the pressure handle 204 to move toward the direction close to the needle 203, so that the pressure handle 204 is separated from the sensing switch 50, so that the control system can determine that the injection device 100 is in the state of absorbing liquid medicine.

[0072] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the force transmission mechanism 70 includes a guide column 71, which is protruded in the outer shell 30. When the radial clamping mechanism 1 is subjected to a reaction force applied by the propulsion device 202 in a direction away from the outer shell 30, the radial clamping mechanism 1 is pressed against the guide column 71, and the reaction force is transmitted to the outer shell 30 through the guide column 71, thereby preventing the radial clamping mechanism 1 from being deformed due to the force.

[0073] like Figure 1 , Figure 5 and Figure 6 As shown, combined with Fig.10 In a specific embodiment, the elastic member 22 is disposed around the guide column 71, and the elastic member 22 is located between the housing 30 and the transmission assembly 112. The two ends of the elastic member 22 respectively abut against the housing 30 and the transmission assembly 112, so as to apply a force toward the housing 30 to the transmission assembly 112, so that the transmission shaft 113 is also subjected to a force toward the housing 30, so that the clamping member 12 is subjected to a force toward the housing 30, and then the clamping member 12, the pressing handle 204 and the housing 30 abut in sequence in the first direction. Specifically, a connecting column 3 surrounding the outer circumference of the guide column 71 is also protruding in the housing 30, and one end of the elastic member 22 away from the transmission assembly 112 abuts against the connecting column 3.

[0074] Further, the guide column 71 is provided with a mounting hole (not shown) for the transmission shaft 113 to pass through. The transmission shaft 113 is used to drive the transmission assembly 112 to move the compressed elastic member 22 to press against the guide column 71 when the clamping member 12 is subjected to the reaction force in the direction away from the housing 30 applied by the propulsion device 202, so as to transmit the reaction force to the housing 30 through the guide column 71. Specifically, there are two guide columns 71, and the two guide columns 71, the two elastic members 22 and the two transmission gears 1122 correspond to each other. The transmission shaft 113 is used to drive the transmission gear 1122 to press against the guide column 71 when the clamping member 12 is subjected to the reaction force in the direction away from the housing 30 applied by the propulsion device 202, so that the reaction force received by the clamping member 12 is transmitted to the housing 30 through the transmission shaft 113, the transmission gear 1122 and the guide column 71 in sequence, so as to avoid the phenomenon that the clamping member 12 is deformed due to the force and causes the medical container 200 to be separated, and reduce the risk of the medical container 200 falling off.

[0075] Combination Figure 1 , Figure 2 and Figure 5 In another specific embodiment, the force transmission mechanism 70 includes a shoulder (not shown) arranged on the outer peripheral surface of the transmission shaft 113, and a through hole (not shown) for the transmission shaft 113 to pass through is provided in the shell 30, and the through hole includes a first hole section (not shown) and a second hole section (not shown) connected in sequence along the same axial direction, and the aperture of the first hole section is smaller than the aperture of the second hole section, so that a step end surface (not shown) is formed between the first hole section and the second hole section, and the shoulder is located in the second hole section. When the clamping member 12 is subjected to a reaction force applied by the piston rod 202 away from the shell 30, the transmission shaft 113 drives the shoulder to move to press against the step end surface, so that the reaction force exerted on the clamping member 12 is transmitted to the shell 30 via the transmission shaft 113 and the shoulder in sequence, so as to avoid the phenomenon that the clamping member 12 is deformed due to the force and causes the syringe 200 to detach, thereby reducing the risk of the syringe 200 falling off.

[0076] like Figure 1 , Figure 2 and Figure 3 As shown, in a specific embodiment, the first body 10 includes a shell 4, a moving mechanism 5 and a mounting portion 6, the moving mechanism 5 and the mounting portion 6 are both mounted on the shell 4, the mounting portion 6 is used to mount the main body 201, and the moving mechanism 5 is used to drive the second body 20 to move. Specifically, the moving mechanism 5 includes a second driving member 51, a moving component 52 and a moving rod 53, the second driving member 51 is connected to the moving rod 53 through the moving component 52 to drive the moving rod 53 to move back and forth in a straight line, and the end of the moving rod 53 away from the second driving member 51 is connected to the housing 30 to drive the second body 20 to move in a direction close to or away from the shell 4. Exemplarily, the second driving member 51 can be a motor, and the moving component 52 can be a screw transmission mechanism.

[0077] Furthermore, the first body 10 also includes a support seat 7 arranged in the shell 4, and the moving mechanism 5 is installed on the support seat 7. The distance between the mounting portion 6 and the shell 4 is adjustable to adapt to the main body 201 of different sizes. A space for fixing the main body 201 is formed between the mounting portion 6 and the shell 4. The mounting portion 6 can be a fixed clip. The shell 4 is provided with a touch-operated display screen 8, so that after the medical container 200 is installed on the injection device 100, the user can preset functions such as vacuuming, injecting liquid medicine and absorbing liquid medicine by operating the screen of the display screen 8, without repeatedly disassembling and assembling the medical container 200. A guide mechanism 9 is provided on the support seat 7, and the guide mechanism 9 is respectively connected to the moving component 52 and the moving rod 53, and is used to guide the moving component 52 and the moving rod 53 to move in a straight line.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An injection device, characterized in that: The medical container comprises a first body and a second body, wherein the first body is used to mount the main body of the medical container, the second body comprises a shell and a clamping assembly, the clamping assembly is movably mounted on the shell, the clamping assembly is used to automatically adapt to and clamp a propulsion device of the medical container, and the first body controls the movement of the propulsion device by driving the second body.

2. The injection device according to claim 1, characterized in that The clamping assembly comprises a radial clamping mechanism with an adjustable radial clamping angle, and the radial clamping mechanism is used to automatically adapt and clamp the outer periphery of the propulsion device according to the radial size of the propulsion device.

3. The injection device according to claim 2, characterized in that The radial clamping mechanism comprises a driving mechanism and two clamping members, and a clamping opening is formed between the two clamping members; The two clamping members are used to rotate towards or away from each other under the drive of the driving mechanism to adjust the radial clamping angle of the clamping opening.

4. The injection device according to claim 3, characterized in that The driving mechanism comprises a first driving member, a transmission assembly and two transmission shafts, wherein the first driving member is respectively connected to the two transmission shafts through the transmission assembly to respectively drive the two transmission shafts to rotate; The two transmission shafts correspond to the two clamping members one by one, and the two clamping members are respectively driven by the two transmission shafts to rotate in opposite directions or toward each other.

5. The injection device according to claim 2, characterized in that The second body further comprises a radial angle detection mechanism, which is used to detect an actual radial angle change of the radial clamping mechanism. When the actual radial angle change is less than a preset radial angle change, the radial clamping mechanism clamps the outer periphery of the propulsion device at a current radial clamping angle. and / or, The second body further includes a radial angle limiting mechanism, and the radial angle limiting mechanism is used to limit the rotation of the radial clamping mechanism to limit the radial clamping angle of the radial clamping mechanism.

6. The injection device according to any one of claims 2 to 5, characterized in that: The clamping assembly also includes an axial clamping mechanism, which is used to drive the radial clamping mechanism to move toward or away from the shell, so that the radial clamping mechanism and the shell automatically adapt to clamp the pressure handle of the propulsion device along a first direction, and the first direction is the axial direction of the propulsion device.

7. The injection device according to claim 6, characterized in that The axial clamping mechanism includes a rotating member and an elastic member arranged along the first direction. The rotating member is used to drive the radial clamping mechanism to move toward or away from the shell when rotating, so as to adjust the distance between the radial clamping mechanism and the shell so that the distance corresponds to the thickness of the pressing handle. The elastic member is used to make the radial clamping mechanism, the pressing handle and the shell abut in sequence.

8. The injection device according to claim 7, characterized in that The axial clamping mechanism also includes a docking piece, the rotating piece is installed on the radial clamping mechanism, the docking piece is installed on the outer shell, the rotating piece has an inclined protrusion on the side close to the outer shell, and the docking piece has a groove corresponding to the protrusion, and the protrusion is used to embed into or withdraw from the groove when the rotating piece rotates to adjust the distance between the radial clamping mechanism and the outer shell.

9. The injection device according to any one of claims 2 to 5, characterized in that: The injection device further comprises a force transmission mechanism disposed in the housing, the force transmission mechanism being used to transmit the reaction force exerted on the radial clamping mechanism to the housing, wherein the reaction force is the force exerted by the propulsion device on the radial clamping mechanism along the axial direction of the propulsion device.

10. The injection device according to claim 9, characterized in that The force transmission mechanism includes a guide column, which is protruding inside the outer shell. When the radial clamping mechanism is subjected to the reaction force applied by the propulsion device in a direction away from the outer shell, the radial clamping mechanism presses against the guide column and transmits the reaction force to the outer shell through the guide column.

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