Cascade mechanism multi-channel injection pump

Abstract

The utility model discloses a cascade mechanism multi-channel injection pump which is provided with a lower shell convenient to independently support and use, and an upper shell is nested on the upper surface of the lower shell; comprising a limiting piece, the limiting piece is slidably connected to the inner surface of the upper shell in an embedded mode, a guide column is connected to the inner surface of the limiting piece in an embedded mode and penetrates through the upper shell, and an extrusion spring is connected between the upper shell and the guide column in an embedded mode. According to the multi-channel injection pump of the cascade mechanism, a supporting device facilitating stable supporting is arranged, the lower shell and the upper shell are stably assembled, a needle cylinder is positioned and clamped through cooperation of a limiting piece arranged in a matched mode, an assembled guide column and an extrusion spring, the clamping stability is improved, and the needle cylinder is prevented from moving through cooperation of a positioning plate; and the piston is controlled through the pushing piece and the clamping piece, so that injection use is effectively formed, and the pistons with different sizes can be positioned and used through adjustment of the clamping piece.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-channel syringe pumps, in particular to a multi-channel syringe pump with a cascade mechanism. Background Technique

[0002] For multi-channel syringe pumps, when there are multiple needs for users, multiple syringe pumps are required, which greatly increases the workload of medical staff and requires more time to operate, and it is not convenient to quickly replace the liquid medicine. However, there are still some problems with existing multi-channel syringe pumps when in use.

[0003] In the prior art, the authorized publication (announcement) number: CN213430782U, "An anti-dropping and efficient multi-channel syringe pump", includes a syringe pump main body, a support piece and a clamping block. A syringe pump fixing plate is arranged on the upper left side of the syringe pump main body, and a lead screw is arranged on the right wall of the syringe pump fixing plate. The clamping block is fixed on the outer wall of the driving plate, and a limiting groove is opened on the outer wall of the clamping block;

[0004] During the operation of the above device, the anti-dropping and efficient multi-channel syringe pump is provided with a syringe nipple - sample catheter interface clamping plate. Small "V" - shaped clamps are evenly distributed on the outer wall of the syringe nipple - sample catheter interface clamping plate, and the support pieces are distributed corresponding to the positions of the clamps one by one. This design can support and fix the connection between the syringe nipple and the sample catheter port, further achieving the effect of tightening the sample catheter port, ensuring the relative fixation of the syringe nipple and the sample catheter port, preventing the sample catheter port from loosening or falling off from the syringe nipple, and can achieve the purpose of large-scale, different-dose, safe and stable injection, improving work efficiency. However, when in use, directly setting too many groups of syringe pumps is likely to cause idle waste during the use of the syringe pump when the usage amount is relatively small, or insufficient groups will affect normal use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-channel syringe pump with a cascade mechanism to solve the problem that directly setting too many groups of syringe pumps is likely to cause idle waste during the use of the syringe pump when the usage amount is relatively small, or insufficient groups will affect normal use as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A multi-channel syringe pump with a cascade mechanism is provided with a lower shell that is convenient for independent support use, and an upper shell is nested and installed on the upper surface of the lower shell;

[0007] Including: a limiting member, which is nested and slidably connected to the inner surface of the upper shell, and a guide post is nested and connected to the inner surface of the limiting member, and the guide post penetrates through the upper shell, and a compression spring is nested and connected between the upper shell and the guide post;

[0008] The syringe is nested and connected to the lower surface of the limiting member, and a positioning plate is connected to the outer surface of the syringe, and the positioning plate is stably installed on the side surface of the outer surface of the upper shell. And a piston is telescopically connected to the inner surface of the syringe, and a pusher is connected to the outer surface end of the piston;

[0009] The clamping member is rotatably connected to the side surface of the outer surface of the pusher and is limited to the side surface of the outer surface of the piston. And a positioning block is installed on the outer surface of the clamping member, and the positioning block is snap-fitted and nested in the inner surface of the pusher. At the same time, a return spring is nested and connected between the inner surface of the clamping member and the pusher, and a telescopic assembly is installed on the lower side of the outer surface of the pusher;

[0010] The plug is installed on the lower side of the inner surface of the lower shell, and a main board is installed on the upper side of the inner surface of the lower shell. And a limiting plate is installed on the inner wall of the lower shell. At the same time, a positioning nut is nested and connected to the inner surface of the limiting plate, and a positioning bolt is threadedly connected to the inner surface of the positioning nut. At the same time, a silica gel protection coil is nested and connected to the inner wall of the lower shell.

[0011] Preferably, the upper shell and the limiting member form a limiting telescopic structure, and the limiting member forms an elastic sliding structure with the upper shell through a guide post and a compression spring. And the limiting member and the syringe form a pressing structure. At the same time, the syringe forms a clamping and limiting structure with the upper shell through the positioning plate.

[0012] Through the above structure, it is convenient to control the positioning of the limiting member on the syringe during use, prevent the syringe from sliding, and can form clamping and positioning for syringes of different diameters.

[0013] Preferably, the piston forms a limiting clamping structure with the pusher through the clamping member, and the clamping member forms an elastically contractible rotational limiting structure with the pusher through the positioning block and the return spring. And the pusher forms a telescopic structure with the upper shell through the telescopic assembly.

[0014] Through the above structure, the positioning of the end of the piston can be effectively controlled during use, and it can adapt to pistons of different diameters. And in cooperation with the telescopic assembly, injection can be formed between the piston and the syringe.

[0015] Preferably, the plug and the lower shell form an internal nested structure, and the lower shell forms a limiting structure with the positioning nut through the limiting plate. And the positioning nut and the positioning bolt form a threaded structure. At the same time, the silica gel protection coil and the lower shell form a limiting nested structure.

[0016] Through the above structure, it is convenient to effectively control the use stability of the plug during use, and through the use of the positioning nut and the positioning bolt, multiple groups of connected injection pumps can be effectively controlled by the main board to form injection use, improving the use effect of the injection pump.

[0017] Preferably, a nested block is nested and connected to the lower surface of the lower shell, a fastening clip is installed on the lower surface of the nested block, and a hand-rotating bolt is threadedly connected to the inner surface of the fastening clip.

[0018] With the above structure, during use, it is convenient to effectively assemble the fastening clip installed on the nested block, effectively improving the use stability of multiple injection pumps.

[0019] Preferably, the nested block and the lower shell form a positioning and nesting structure, the nested block and the fastening clip form an integrated structure, and the fastening clip and the hand-rotating bolt form a rotating structure.

[0020] With the above structure, during use, it is convenient to stably control the support use of multiple injection pumps, and it is convenient to position at the working position through the fastening clip.

[0021] Compared with the prior art, the beneficial effects of the present utility model are:

[0022] 1. For this cascade mechanism multi-channel injection pump, there is a stable support setting, and it is stably assembled through the lower shell and the upper shell. With the cooperation of the provided limit member and the assembled guide post and compression spring, the syringe barrel is positioned and clamped, improving the clamping stability. With the cooperation of the provided positioning plate, the movement of the syringe barrel is prevented, and the piston controlled by the pushing member and the clamping member effectively forms an injection use. Thus, through the adjustment of the clamping member, positioning use can be formed for pistons of different sizes;

[0023] 2. For this cascade mechanism multi-channel injection pump, there are a plug and a main board convenient for power-on, and a limit plate is arranged inside the lower shell. The cooperation of the positioning nut and the positioning bolt can be controlled to form an overall assembly by controlling the equally spaced fitting of the lower shell. Furthermore, with the use of the silicone protection coil, it is convenient to connect the circuits in series, thereby controlling the use stability of multiple injection pumps, and synchronously with the use of the fastening clip, improving the use stability of multiple injection pumps and the stability of disassembly, assembly, and series connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the lower shell of the present utility model;

[0025] Figure 2 It is a half-sectional three-dimensional structure schematic diagram of the lower shell of the present utility model;

[0026] Figure 3 It is a partial-sectional three-dimensional structure schematic diagram of the pushing member of the present utility model;

[0027] Figure 4 It is a partial-sectional three-dimensional structure schematic diagram of the limit plate of the present utility model;

[0028] Figure 5 It is a three-dimensional structure schematic diagram of the fastening clip of the present utility model.

[0029] In the figure: 1. Lower shell; 2. Upper shell; 3. Limiting member; 4. Guide post; 5. Extrusion spring; 6. Syringe; 7. Positioning plate; 8. Piston; 9. Pushing member; 10. Clamping member; 11. Positioning block; 12. Return spring; 13. Telescopic assembly; 14. Plug; 15. Main board; 16. Limiting plate; 17. Silicone protection coil; 18. Positioning nut; 19. Positioning bolt; 20. Nested block; 21. Fastening clip; 22. Hand-rotating bolt. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 5 , the present invention provides a technical solution: a cascade mechanism multi-channel injection pump, provided with a lower shell 1 that is convenient for independent support use, and an upper shell 2 is nested and installed on the upper surface of the lower shell 1;

[0032] Including: a limiting member 3, nested and slidably connected to the inner surface of the upper shell 2, and a guide post 4 is nested and connected to the inner surface of the limiting member 3, and the guide post 4 is passed through the upper shell 2, and an extrusion spring 5 is nested and connected between the upper shell 2 and the guide post 4;

[0033] A syringe 6, nested and connected to the lower surface of the limiting member 3, and a positioning plate 7 is connected to the outer surface of the syringe 6, and the positioning plate 7 is stably installed on the outer side surface of the upper shell 2, and a piston 8 is telescopically connected to the inner surface of the syringe 6, and a pushing member 9 is connected to the outer surface end of the piston 8;

[0034] A clamping member 10, rotatably connected to the outer side surface of the pushing member 9, and limited to the outer side surface of the piston 8, and a positioning block 11 is installed on the outer surface of the clamping member 10, and the positioning block 11 is snap-fitted and nested in the inner surface of the pushing member 9, and a return spring 12 is nested and connected between the inner surface of the clamping member 10 and the pushing member 9, and a telescopic assembly 13 is installed on the lower side of the outer surface of the pushing member 9;

[0035] The upper shell 2 and the limiting member 3 form a limiting telescopic structure, and the limiting member 3 forms an elastic sliding structure with the upper shell 2 through the guide post 4 and the extrusion spring 5, and the limiting member 3 and the syringe 6 form an extrusion structure, and at the same time, the syringe 6 forms a clamping and limiting structure with the upper shell 2 through the positioning plate 7.

[0036] The piston 8 and the pusher 9 form a limit clamping structure through the clamping member 10. Moreover, the clamping member 10 and the pusher 9 form an elastically contractible rotational limit structure through the positioning block 11 and the return spring 12. And the pusher 9 and the upper shell 2 form a telescopic structure through the telescopic assembly 13.

[0037] During use, the upper shell 2 is installed on the upper surface of the lower shell 1, so that the limiting member 3 for controlling the assembly of the upper shell 2 forms a nested telescopic structure. Then hold the limiting member 3 and move it upward, driving the guide post 4 nested and assembled with the limiting member 3 to form a through connection, and driving the guide post 4 to compress and adjust the compression spring 5, thereby controlling the clamping of the syringe 6 by the cooperation of the limiting member 3 and the upper shell 2. And cooperating with the positioning plate 7 installed on the upper shell 2, effectively preventing the syringe 6 from moving. When the syringe 6 is in use, the piston 8 nested and assembled with the syringe 6 is stably nested between the pusher 9 and the clamping member 10. And through the cooperation of the installed positioning block 11 and the return spring 12 on the clamping member 10, effectively controlling the elastic clamping adjustment of the clamping member 10 and the pusher 9 to form clamping and limiting of the piston 8, preventing the clamping member 10 from automatically rotating, and being able to adjust the distance between the clamping members 10 to form limit control for pistons 8 of different diameters, improving the use stability of the injection pump. And through the use of the telescopic assembly 13, the position movement of the piston 8 can be controlled;

[0038] The plug 14 is installed on the lower side of the inner surface of the lower shell 1. And the main board 15 is installed on the upper side of the inner surface of the lower shell 1. And the limiting plate 16 is installed on the inner wall of the lower shell 1. At the same time, the positioning nut 18 is nested and connected to the inner surface of the limiting plate 16. And the positioning bolt 19 is threadedly connected to the inner surface of the positioning nut 18. At the same time, the silicone protection coil 17 is nested and connected to the inner wall of the lower shell 1.

[0039] The plug 14 and the lower shell 1 form an internal nested structure. And the lower shell 1 and the positioning nut 18 form a limiting structure through the limiting plate 16. And the positioning nut 18 and the positioning bolt 19 form a threaded structure. At the same time, the silicone protection coil 17 and the lower shell 1 form a limiting nested structure.

[0040] The nested block 20 is nested and connected to the lower surface of the lower shell 1. And the fastening clip 21 is installed on the lower surface of the nested block 20. And the hand-rotating bolt 22 is threadedly connected to the inner surface of the fastening clip 21.

[0041] The nested block 20 and the lower shell 1 form a positioning nested structure. And the nested block 20 and the fastening clip 21 form an integrated structure. And the fastening clip 21 and the hand-rotating bolt 22 form a rotational structure.

[0042] During use, connect the circuit of the plug 14 assembled to the lower shell 1, and control the position adjustment of the telescopic component 13 through the main board 15, and form an independent step-by-step control of the injection of different syringes 6. When docking with different numbers of groups of the lower shell 1, align the nested silicone protection coil 17, and cooperate with the connection between the positioning nut 18 and the positioning bolt 19 to control the connection setting between the lower shells 1, and form extrusion on the silicone protection coil 17, so as to facilitate the extrusion of the series-connected circuit. And the positioning nut 18 set improves the stability of nested assembly through the use of the limiting plate 16. After docking, the lower shell 1 is nested and assembled with the fastening clip 21 installed on the nested block 20, and cooperate with the hand-tightening bolt 22 assembled by threads to effectively assemble the syringe pump in the working position.

[0043] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cascade mechanism multi-channel injection pump, provided with a lower shell (1) that is easy to support and use independently, and an upper shell (2) is nested and installed on the upper surface of the lower shell (1); It is characterized in that include: A limiter (3) is nested and slidably connected to the inner surface of the upper shell (2), and a guide column (4) is nested and connected to the inner surface of the limiter (3), and the guide column (4) passes through the upper shell (2), and a compression spring (5) is nested and connected between the upper shell (2) and the guide column (4); The syringe (6) is nested and connected to the lower surface of the stopper (3), and the outer surface of the syringe (6) is connected to a positioning plate (7), and the positioning plate (7) is stably installed on the outer surface side of the upper shell (2), and the inner surface of the syringe (6) is telescopically connected to a piston (8), and the outer surface end of the piston (8) is connected to a push piece (9); A clamping member (10) is rotatably connected to the outer surface side of the pushing member (9) and is limited to the outer surface side of the piston (8). A positioning block (11) is installed on the outer surface of the clamping member (10), and the positioning block (11) is engaged and nested in the inner surface of the pushing member (9). A return spring (12) is nested and connected between the clamping member (10) and the inner surface of the pushing member (9), and a telescopic component (13) is installed on the lower side of the outer surface of the pushing member (9); The plug (14) is installed on the lower side of the inner surface of the lower shell (1), and the main board (15) is installed on the upper side of the inner surface of the lower shell (1), and a limit plate (16) is installed on the inner wall of the lower shell (1), and a positioning nut (18) is nested and connected to the inner surface of the limit plate (16), and a positioning bolt (19) is threadedly connected to the inner surface of the positioning nut (18), and a silicone protective coil (17) is nested and connected to the inner wall of the lower shell (1).

2. A cascade mechanism multi-channel syringe pump according to claim 1, characterized in that: The upper shell (2) and the limiting member (3) form a limiting telescopic structure, and the limiting member (3) forms an elastic sliding structure with the upper shell (2) through a guide column (4) and a squeezing spring (5), and the limiting member (3) and the syringe (6) form a squeezing structure, while the syringe (6) and the upper shell (2) form a clamping limiting structure through a positioning plate (7).

3. A cascade mechanism multi-channel injection pump according to claim 1, characterized in that: The piston (8) forms a limiting clamping structure through a clamping member (10) and a pushing member (9), and the clamping member (10) forms an elastically contractible rotation limiting structure with the pushing member (9) through a positioning block (11) and a return spring (12), and the pushing member (9) forms a telescopic structure with the upper shell (2) through a telescopic assembly (13).

4. A cascade mechanism multi-channel syringe pump according to claim 1, characterized in that: The plug (14) and the lower shell (1) form a built-in nested structure, and the lower shell (1) forms a limiting structure through a limiting plate (16) and a positioning nut (18), and the positioning nut (18) and the positioning bolt (19) form a threaded structure, while the silicone protective coil (17) and the lower shell (1) form a limiting nested structure.

5. The cascade mechanism multi-channel syringe pump according to claim 1, characterized in that: The lower surface of the lower shell (1) is nested with a nesting block (20), and the lower surface of the nesting block (20) is installed with a fastening clamp (21), and the inner surface of the fastening clamp (21) is threadedly connected with a hand-screwed bolt (22).

6. A cascade mechanism multi-channel syringe pump according to claim 5, characterized in that: The nesting block (20) and the lower shell (1) form a positioning nesting structure, the nesting block (20) and the fastening clamp (21) form an integrated structure, and the fastening clamp (21) and the hand-screwed bolt (22) form a rotating structure.

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