Double-barrel single-channel device

Abstract

The invention relates to the technical field of medical instruments, in particular to a double-barrel single-channel device which comprises an injector main barrel, two injection cavities formed side by side are formed in the injector main barrel, and medicine suction channels used for communicating the injection cavities with the outside are formed in the injector main barrel. A medicine outlet channel is arranged between the two medicine suction channels, the medicine outlet channel is communicated with the two injection cavities through a middle channel, an injector piston is arranged in each injection cavity, the medicine suction channels corresponding to the two injection cavities are arranged on the injector main cylinder, and then the medicine outlet channel is arranged to enable the two injection cavities to be communicated with each other. By controlling on-off of the medicine suction channels and the medicine outlet channels, integration is achieved integrally, operation is easy, and rapid mixing output can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a double-tube single-channel device. Background Art

[0002] The syringes of traditional double-barrel syringes are separate syringes. Saline and contrast agent are injected into the syringes separately and then connected into one channel through a connecting tube. The operation is complicated and the clinical workload is heavy. It cannot meet the daily patient examination volume. The patient waiting anxiety caused by the low examination efficiency is an invisible pressure for clinical medical staff.

[0003] A double-barrel syringe with publication number CN211410485U comprises a syringe 1 and a syringe 2, wherein the syringe 1 is located on one side of the syringe 2. The double-barrel syringe described in the utility model is provided with a syringe 1, a syringe 2, a three-way switch 1, a three-way switch 2, a syringe water inlet and a syringe water outlet, etc.; A double-barrel high-pressure syringe parallel Y-type tube with publication number CN221154947U comprises a first syringe, a second syringe and a mixer, wherein the mixer comprises a first connecting tube, a second connecting tube and a mixing tube, wherein the first connecting tube, the second connecting tube and the mixing tube are in a Y-shaped structure, wherein one end of the first connecting tube is connected to the outlet of the first syringe and the other end is connected to the mixing tube, and one end of the second connecting tube is connected to the outlet of the second syringe and the other end is connected to the mixing tube; The current double barrels are connected to each other through connecting pipes during output, which makes the assembly troublesome and laborious, and it is impossible to achieve the integration of double-channel injection. Summary of the invention

[0004] 1. Technical issues to be resolved The object of the present invention is to provide a double-tube single-channel device in order to solve the above problems.

[0005] (II) Technical solution To achieve the above object, the present invention provides the following technical solutions: The present invention provides a double-barrel single-channel device, comprising a syringe main barrel, wherein two injection cavities formed in parallel are formed inside the syringe main barrel, and drug suction channels for connecting the injection cavities with the outside are respectively provided on the syringe main barrel, and a drug discharge channel is provided between the two drug suction channels, and the drug discharge channel is connected with the two injection cavities through an intermediate channel, and a syringe piston is provided in each injection cavity.

[0006] Furthermore, it also includes a syringe holder structure and a digital display control panel, the syringe main barrel and the syringe holder structure are detachably connected to each other, and the syringe holder structure is provided with a push drive assembly for driving the syringe piston to move in the injection chamber, and the push drive assembly and the syringe piston are detachably connected to each other through a clamping structure.

[0007] Furthermore, each of the drug suction channels is provided with an opening and closing structure, a push-ring switch control structure for controlling the opening and closing drive thereof is detachably connected between the two opening and closing structures, and a spiral mixing structure for spirally mixing the two liquids is provided between the drug discharge channel and the two intermediate channels.

[0008] Furthermore, the cross-section of the syringe holder structure is in the shape of a mountain, the inner side wall of the syringe holder structure is fitted with an embedded seat sleeve, the upper sides of the embedded seat sleeve are formed with arc-shaped warped edges, the end of the syringe holder structure is provided with an end positioning baffle for abutting and limiting the end of the syringe main barrel, and a handle is provided on the lower side of the syringe holder structure, and a switch control button is provided on the handle.

[0009] Furthermore, the push rod drive assembly includes a second electric telescopic rod fixedly arranged in the syringe holder structure, the push rod head end of the second electric telescopic rod faces the side opposite to the end positioning baffle and is connected to the end plate, and a motor corresponding to the two injection chambers is arranged on the end plate, the output shaft end of the motor faces the corresponding injection chamber and is connected to one end of the push rod, and the other end of the push rod is connected to the syringe piston through a clamping structure, and the output end of the digital display control panel is electrically connected to the input end of the motor.

[0010] Furthermore, the clamping structure includes a butterfly-shaped clamping seat fixedly arranged on the syringe piston, and a butterfly clamping plate is fixedly arranged on the outer side of the end of the pushing rod. When the pushing rod drives the butterfly clamping plate to rotate, the butterfly clamping plate can slide and separate from the butterfly clamping seat, and an automatic pressure detection component is arranged at the end of the pushing rod.

[0011] Furthermore, the automatic pressure detection component includes an embedded hole opened inside the end of the injection rod, a pressure sensor is fixedly arranged on the inner end surface of the embedded hole, one end of the embedded hole is open and a pressure block is slidably arranged at the opening, a spring is fixedly connected between the pressure sensor and the pressure block, and the output end of the pressure sensor is electrically connected to the input end of the digital display control panel.

[0012] Furthermore, the push ring switch control structure includes two brackets, the outer contour of the bracket is U-shaped, the U-shaped openings of the two brackets are arranged opposite to each other, and sliding sleeves are respectively slidably connected between the head ends of the two brackets, and end blocks for achieving maximum spacing sliding position limiting are fixedly provided at the ends of the brackets, and a first spring is fixedly connected to each other between the two end blocks located in the same sliding sleeve, and a boss is provided on the outer protrusion of the middle part of the bracket.

[0013] Furthermore, the spiral mixing structure comprises a mixing cylinder, the inner side wall of which is protruded with spiral ribs, one end of the mixing cylinder is connected to the medicine outlet channel, and the other end of the mixing cylinder is connected to two intermediate channels respectively.

[0014] Furthermore, the opening and closing structure includes an opening and closing plate slidably arranged at the drug suction channel, one side of the opening and closing plate is connected to one end of a sliding shaft, the other end of the sliding shaft slides through a sliding hole opened at a corresponding position of the syringe main barrel and is slidably connected to a connecting hole opened at a corresponding position on the mixing barrel, a second spring is fixedly connected between the inner end surface of the connecting hole and the end of the sliding shaft, a support rod is fixedly arranged on the sliding shaft between the sliding hole and the connecting hole, a C-shaped clamp is fixedly arranged on the support rod, and the clamp and the bracket are detachably connected to each other.

[0015] (III) Beneficial effects Compared with the prior art, the present invention has the following beneficial effects: 1. The syringe main barrel is provided with drug suction channels corresponding to the two injection chambers, and then a drug discharge channel is provided to connect the two injection chambers to each other. By controlling the on-off of each drug suction channel and drug discharge channel, the whole is integrated, the operation is simple, and rapid mixed output can be achieved.

[0016] 2. The syringe holder structure and the push-injection drive assembly cooperate with each other to achieve convenience in drug inhalation and dispensing, and are easy to operate. In addition, the push-ring switch control structure and the opening and closing structure cooperate to facilitate the on-off control of the drug inhalation channel. In addition, the push-ring switch control structure and the opening and closing structure are detachably connected to each other, thereby realizing the recycling of the push-ring switch control structure after disinfection.

[0017] 3. When the liquids in the two injection chambers are discharged from the drug outlet channel, the spiral mixing structure can play a role in sufficient mixing.

[0018] 4. The snap-fit ​​structure can realize the automatic snap-fit ​​between the push-in drive assembly and the syringe piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 The present invention Figure 1 A right view structural diagram of ; Figure 3 The present invention Figure 1 A schematic diagram of a three-dimensional structure in a first direction; Figure 4 The present invention Figure 1 AA cross-sectional structural diagram; Figure 5 The present invention Figure 4 A schematic diagram of the local enlarged structure at C; Figure 6 The present invention Figure 4 A schematic diagram of the local enlarged structure at D; Figure 7 The present invention Figure 4 A schematic diagram of the local enlarged structure at E; Figure 8 The present invention Figure 2 BB cross-sectional structure diagram; Fig. 9 The present invention Figure 1 A schematic diagram of a three-dimensional structure in a second direction; Fig.10 It is a schematic diagram of the butterfly card holder and the butterfly card board of the present invention in the state of being connected; Fig.11 It is a schematic diagram of the pavement structure of the push-ring switch control structure of the present invention.

[0021] The accompanying drawings are marked as follows: 1. syringe main barrel; 101. drug outlet channel; 102. drug suction channel; 103. hanging belt; 104. sealing plug; 105. syringe piston; 106. middle channel; 107. injection chamber; 2. syringe holder structure; 201. embedded seat cover; 202. arc-shaped warped edge; 203. end positioning baffle; 204. handle; 205. switch control button; 3. push ring switch control structure; 301. first electric telescopic rod; 302. U-shaped card plate; 303. bracket; 304. boss; 305. sliding sleeve; 306. end block; 307. first A spring; 4. injection drive assembly; 401. end plate; 402. motor; 403. injection rod; 404. second electric telescopic rod; 5. spiral mixing structure; 501. mixing barrel; 502. spiral rib; 6. snap-fit ​​structure; 601. embedded hole; 602. pressure sensor; 603. spring; 604. pressure block; 605. butterfly holder; 606. butterfly clamp; 7. opening and closing structure; 701. sliding hole; 702. sliding shaft; 703. opening and closing plate; 704. support rod; 705. clamp; 706. connecting hole; 707. second spring; 8. digital display control panel. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 11 As shown, the present invention provides a double-barrel single-channel device, including a syringe main barrel 1. In practical applications, the syringe main barrel 1 is made of transparent material, which is convenient for clinical medical staff to observe the volume of the liquid medicine in the syringe, so as to understand the real-time injection status of the liquid medicine. Two injection cavities 107 formed in parallel are formed inside the syringe main barrel 1. The syringe main barrel 1 is respectively provided with a drug suction channel 102 for realizing the connection between the injection cavity 107 and the outside. A drug outlet channel 101 is provided between the two drug suction channels 102. The drug outlet channel 101 is connected to the two injection cavities 107 through the intermediate channel 106. A syringe piston 105 is provided in each injection cavity 107. In practical applications, one-way valves can be provided on both the two drug suction channels 102 and the drug outlet channel 101, wherein the one-way valves on the two drug suction channels 102 are used for the one-way entry of liquid into the injection cavity 107, and the one-way valves on the drug outlet channel 101 are used for the one-way discharge of liquid from the injection cavity 107.

[0024] The double-barrel single-channel device also includes a syringe holder structure 2 and a digital display control panel 8. The syringe main barrel 1 and the syringe holder structure 2 are detachably connected to each other. The syringe holder structure 2 is provided with a push drive assembly 4 for driving the syringe piston 105 to move in the injection chamber 107. The push drive assembly 4 and the syringe piston 105 are detachably connected to each other via a clamping structure 6.

[0025] Each drug suction channel 102 is provided with an opening and closing structure 7, and a push-ring switch control structure 3 for controlling the opening and closing drive thereof is detachably connected between the two opening and closing structures 7. A spiral mixing structure 5 for spirally mixing two liquids is provided between the drug discharge channel 101 and the two intermediate channels 106.

[0026] See the instruction manual Figure 1 and Figure 3 As shown, the cross-section of the syringe holder structure 2 is in the shape of a mountain, and an embedded seat sleeve 201 is fitted on the inner wall of the syringe holder structure 2. The upper sides of the embedded seat sleeve 201 are formed with arc-shaped warped edges 202. The end of the syringe holder structure 2 is provided with an end positioning baffle 203 for abutting and limiting the end of the syringe main barrel 1. A handle 204 is provided on the lower side of the syringe holder structure 2, and a switch control button 205 is provided on the handle 204.

[0027] See the instruction manual Figure 3 , Figure 4 and Figure 8 As shown, the push drive assembly 4 includes a second electric telescopic rod 404 fixedly arranged in the syringe holder structure 2, the push rod head end of the second electric telescopic rod 404 faces the side opposite to the end positioning baffle 203 and is connected to the end plate 401, and the end plate 401 is provided with a motor 402 corresponding to the two injection chambers 107, the output shaft end of the motor 402 faces the corresponding injection chamber 107 and is connected to one end of the push rod 403, and the other end of the push rod 403 is connected to the syringe piston 105 through the clamping structure 6, and the output end of the digital display control panel 8 is electrically connected to the input end of the motor 402. Through the above-mentioned specific structural design, the push drive assembly 4 is applied to the two injection chambers 107 to absorb the same amount of liquid or push the same amount of liquid for use, and when absorbing or pushing different proportions of liquid, a manual push rod can be used, or the two push rods 403 can be respectively used as a third electric telescopic rod to achieve independent absorption or push injection of each injection chamber 107.

[0028] See the instruction manual Figure 4 , Figure 5 and Fig.10As shown, the clamping structure 6 includes a butterfly clamp 605 fixedly arranged on the syringe piston 105, and a butterfly clamp plate 606 is fixedly arranged on the outer side of the end of the push rod 403. When the push rod 403 drives the butterfly clamp plate 606 to rotate, the butterfly clamp plate 606 can slide and separate from the butterfly clamp seat 605. In practical applications, a clamping slot for the butterfly clamp plate 606 to be screwed in or out is provided on the butterfly clamp seat 605. An automatic pressure detection component is provided at the end of the push rod 403. The automatic pressure detection component includes an embedded hole 601 provided inside the end of the push rod 403, a pressure sensor 602 is fixedly arranged on the inner end surface of the embedded hole 601, one end of the embedded hole 601 is open and a pressure block 604 is slidably arranged at the opening, a spring 603 is fixedly connected between the pressure sensor 602 and the pressure block 604, and the output end of the pressure sensor 602 is electrically connected to the input end of the digital display control panel 8.

[0029] The entire push ring switch control structure 3 has a rectangular frame shape, and includes two brackets 303, the outer contour of the bracket 303 is U-shaped, and the U-shaped openings of the two brackets 303 are arranged oppositely, and the head ends of the two brackets 303 are respectively slidably connected with a sliding sleeve 305, and the ends of the brackets 303 are fixedly provided with an end block 306 for realizing the maximum spacing sliding position limit, and the two end blocks 306 located in the same sliding sleeve 305 are fixedly connected to each other with a first spring 307, and the middle outer side of the bracket 303 is convexly provided with a convex shoulder 304. In practical applications, the convex shoulder 304 can realize the limit fixation of the push ring switch control structure 3 in the up and down directions when it is connected to the opening and closing structure 7.

[0030] See the instruction manual Figure 4 , Figure 6 and Figure 7 As shown, the spiral mixing structure 5 includes a mixing barrel 501, and a spiral rib 502 is protruded on the inner wall of the mixing barrel 501. One end of the mixing barrel 501 is connected to the drug outlet channel 101, and the other end of the mixing barrel 501 is respectively connected to the two middle channels 106. When the liquid in the two injection chambers 107 is discharged from the drug outlet channel 101, the spiral mixing structure 5 can play a role in sufficient mixing.

[0031] The opening and closing structure 7 includes an opening and closing plate 703 slidably arranged at the drug suction channel 102, one side of the opening and closing plate 703 is connected to one end of a sliding shaft 702, the other end of the sliding shaft 702 slides through a sliding hole 701 provided at a corresponding position of the syringe main barrel 1 and is slidably connected to a connecting hole 706 provided at a corresponding position on the mixing barrel 501, a second spring 707 is fixedly connected between the inner end surface of the connecting hole 706 and the end of the sliding shaft 702, a support rod 704 is fixedly arranged on the sliding shaft 702 between the sliding hole 701 and the connecting hole 706, a C-shaped clamp 705 is fixedly arranged on the support rod 704, and the clamp 705 and the bracket 303 are detachably connected to each other. Under the elastic force of the second spring 707, the opening and closing plate 703 can close the drug suction channel 102, and under the driving control of the opening and closing structure 7 by the push ring switch control structure 3, the opening and closing plate 703 can open the drug suction channel 102. Specifically, the push rod of the first electric telescopic rod 301 extends to drive the U-shaped card plate 302 to move close to the sliding sleeve 305 located below, and drives the sliding shaft 702 to slide toward the connecting hole 706 to compress the second spring 707. At this time, the two brackets 303 are close to each other, and the two end blocks 306 compress the first spring 307. When the push rod of the first electric telescopic rod 301 is retracted, the second spring 707 resets the opening and closing plate 703, and the first spring 307 resets the two brackets 303.

[0032] Working principle and technical effect of the present invention: When in use, the push rod of the second electric telescopic rod 404 of the push drive assembly 4 reaches the maximum stroke, avoiding the push rod 403 from blocking the installation of the syringe main barrel 1 on the syringe holder structure 2, and the syringe main barrel 1 is inserted into the syringe holder structure 2, and the position of the syringe main barrel 1 on the syringe holder structure 2 is fixed by the embedded seat sleeve 201 and the arc-shaped warped edge 202, and the open end of the syringe main barrel 1 faces the end plate 401 of the push drive assembly 4, and the closed end of the syringe main barrel 1 faces the push ring opening The closing control structure 3 is closed, and at this time, the closed end of the syringe main barrel 1 and the end positioning baffle 203 are positioned and abutted against each other, the bracket 303 of the push ring switch control structure 3 is clamped into the clamping hoop 705, and the boss 304 is used to clamp the position of the bracket 303 in the clamping hoop 705. At this time, the U-shaped card plate 302 and the sliding sleeve 305 located below correspond to each other in the horizontal position, that is, when the push rod of the first electric telescopic rod 301 is extended, the sliding sleeve 305 located below can be clamped into the U-shaped groove of the U-shaped card plate 302; The push rod of the second electric telescopic rod 404 is retracted, thereby driving the push rod 403 to extend into the injection chamber 107. During the extension process, the motor 402 drives the push rod 403 to rotate. When the pressure block 604 is abutted and pushed into the embedded hole 601 by the syringe piston 105, the spring 603 is compressed and the pressure sensor 602 detects and transmits the electrical signal to the digital display control panel 8. The digital display control panel 8 continues to control the output shaft of the motor 402 to rotate, so that the push rod 403 rotates ninety degrees, thereby realizing the mutual engagement of the butterfly holder 605 and the butterfly card plate 606. When the butterfly holder 605 and the butterfly card plate 606 are separated from each other, while the push rod of the second electric telescopic rod 404 is extended, the digital display control panel 8 controls the output shaft of the motor 402 to drive the push rod 403 to rotate ninety degrees. When the opening and closing structure 7 opens the drug suction channel 102, two different drug solutions can be sucked in through the drug suction channels 102 on both sides of the syringe main barrel 1, and after being mixed by the spiral mixing structure 5, they are pushed out through the drug outlet channel 101. In actual application, a sealing plug 104 is detachably connected to each of the two drug suction channels 102 and one drug outlet channel 101, and each sealing plug 104 is connected to the syringe main barrel 1 through a hanging belt 103.

[0033] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A double-tube single-channel device, characterized in that: The invention comprises a syringe main barrel (1), wherein two injection chambers (107) are formed in parallel inside the syringe main barrel (1), and drug suction channels (102) for realizing mutual communication between the injection chambers (107) and the outside are respectively arranged on the syringe main barrel (1), and a drug discharge channel (101) is arranged between the two drug suction channels (102), and the drug discharge channel (101) is respectively connected to the two injection chambers (107) through an intermediate channel (106), and a syringe piston (105) is arranged in each injection chamber (107).

2. A double-tube single-channel device according to claim 1, characterized in that: It also includes a syringe holder structure (2) and a digital display control panel (8), wherein the syringe main barrel (1) and the syringe holder structure (2) are detachably connected to each other, and the syringe holder structure (2) is provided with a push drive assembly (4) for driving the syringe piston (105) to move in the injection chamber (107), and the push drive assembly (4) and the syringe piston (105) are detachably connected to each other via a clamping structure (6).

3. A double-tube single-channel device according to claim 1 or 2, characterized in that: Each of the medicine suction channels (102) is provided with an opening and closing structure (7), a push-ring switch control structure (3) for controlling the opening and closing drive of the two opening and closing structures (7) is detachably connected between the two opening and closing structures (7), and a spiral mixing structure (5) for spirally mixing two liquids is provided between the medicine discharge channel (101) and the two intermediate channels (106).

4. A double-tube single-channel device according to claim 3, characterized in that: The cross-section of the syringe holder structure (2) is in the shape of a mountain. An inner side wall of the syringe holder structure (2) is fitted with an embedded seat sleeve (201). Both sides of the upper portion of the embedded seat sleeve (201) are formed with arc-shaped warped edges (202). An end positioning baffle (203) for abutting and limiting the end of the syringe main barrel (1) is provided at the end of the syringe holder structure (2). A grip (204) is provided at the lower side of the syringe holder structure (2), and a switch control button (205) is provided on the grip (204).

5. A double-tube single-channel device according to claim 4, characterized in that: The push rod drive assembly (4) comprises a second electric telescopic rod (404) fixedly arranged in the syringe holder structure (2); the push rod head end of the second electric telescopic rod (404) faces the side opposite to the end positioning baffle (203) and is connected to the end plate (401); a motor (402) corresponding to the two injection chambers (107) is arranged on the end plate (401); the output shaft end of the motor (402) faces the corresponding injection chamber (107) and is connected to one end of the push rod (403); the other end of the push rod (403) is connected to the syringe piston (105) via the clamping structure (6); and the output end of the digital display control panel (8) is electrically connected to the input end of the motor (402).

6. A double-tube single-channel device according to claim 1, characterized in that: The clamping structure (6) comprises a butterfly clamping seat (605) fixedly arranged on the syringe piston (105), and a butterfly clamping plate (606) is fixedly arranged on the outer side of the end of the injection rod (403). When the injection rod (403) drives the butterfly clamping plate (606) to rotate, the butterfly clamping plate (606) can slide and separate from the butterfly clamping seat (605), and the end of the injection rod (403) is provided with an automatic pressure detection component.

7. A double-tube single-channel device according to claim 6, characterized in that: The automatic pressure detection component comprises an embedded hole (601) opened inside the end of the injection rod (403), a pressure sensor (602) is fixedly arranged on the inner end surface of the embedded hole (601), one end of the embedded hole (601) is open and a pressure block (604) is slidably arranged at the opening, a spring (603) is fixedly connected between the pressure sensor (602) and the pressure block (604), and the output end of the pressure sensor (602) is electrically connected to the input end of the digital display control panel (8).

8. A double-tube single-channel device according to claim 1, characterized in that: The push-ring switch control structure (3) comprises two brackets (303), the outer contour of the brackets (303) is U-shaped, the U-shaped openings of the two brackets (303) are arranged opposite to each other, a sliding sleeve (305) is slidably connected between the head ends of the two brackets (303), an end block (306) for achieving maximum spacing sliding position limiting is fixedly arranged at the end of the bracket (303), a first spring (307) is fixedly connected between the two end blocks (306) located in the same sliding sleeve (305), and a boss (304) is provided on the outer side of the middle part of the bracket (303).

9. A double-tube single-channel device according to claim 8, characterized in that: The spiral mixing structure (5) comprises a mixing barrel (501), the inner side wall of the mixing barrel (501) being provided with a spiral rib plate (502) protruding therefrom, one end of the mixing barrel (501) being in communication with the medicine outlet channel (101), and the other end of the mixing barrel (501) being in communication with two intermediate channels (106) respectively.

10. A double-tube single-channel device according to claim 9, characterized in that: The opening and closing structure (7) comprises an opening and closing plate (703) slidably arranged at the medicine suction channel (102); one side of the opening and closing plate (703) is connected to one end of a sliding shaft (702); the other end of the sliding shaft (702) slides through a sliding hole (701) provided at a corresponding position of the syringe main barrel (1) and is slidably connected to a connecting hole (706) provided at a corresponding position on the mixing barrel (501); a second spring (707) is fixedly connected between an inner end surface of the connecting hole (706) and an end of the sliding shaft (702); a support rod (704) is fixedly arranged on the sliding shaft (702) between the sliding hole (701) and the connecting hole (706); a C-shaped clamp (705) is fixedly arranged on the support rod (704); and the clamp (705) and the bracket (303) are detachably connected to each other.

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