Injection branch pipe switching device of high-pressure injector

Abstract

The utility model discloses an injection branch pipe switching device of a high-pressure injector, which comprises a guide pressing plate arranged on a high-pressure injector main machine, a branch pipe connecting seat is arranged on the front surface of the guide pressing plate, the branch pipe connecting seat comprises a connecting pipe communicated with an injection branch pipe, and an elastic wall is arranged on the connecting pipe; the guide pressing plate is further provided with an ejector rod switch assembly, the ejector rod switch assembly comprises an installation base, a driving mechanism and an ejector rod, the driving mechanism and the ejector rod are in linkage, the driving mechanism, the installation base and the guide pressing plate are sequentially connected, and one end of the ejector rod is arranged opposite to the elastic wall. According to the injection branch pipe switching device of the high-pressure injector, the injection branch pipe does not need to be detached when the ejector rod switch assembly is overhauled and replaced, and liquid in the injection branch pipe can be prevented from flowing out.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure injector field especially relates to a high pressure injector's injection branch pipe switch device. BACKGROUND

[0002] High pressure injector is widely used in clinical cardiovascular angiography examination, CT enhancement angiography scanning and MR enhancement scanning examination and treatment, and its main role is to inject contrast medium or physiological saline into human body. Contrast agent is a kind of special medicine, which plays a vital role in medical imaging, and helps doctors to observe and diagnose the internal organs and structures of patients. One or more bottle holders for placing medicine bottles are arranged on the high pressure injector according to the situation, the bottle holder is provided with a puncture device, the medicine bottle is inserted upside down in the puncture device, and the lower end of the puncture device is communicated with the injection branch pipe.

[0003] Although the on-off of the injection branch pipe can be realized by the valve, when the valve is replaced, the valve needs to be detached from the injection branch pipe, so that the liquid in the injection branch pipe flows out, and the flowed-out liquid is easy to fall on the outer surface of the high pressure injector, which is not only difficult to clean, but also easy to damage the electronic devices. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a high pressure injector's injection branch pipe switch device, which does not need to detach the injection branch pipe when overhauling and replacing the ejector rod switch assembly, and can avoid the liquid in the injection branch pipe from flowing out.

[0005] To achieve the above-mentioned purpose, the utility model provides a high pressure injector's injection branch pipe switch device, which comprises a guide pressure plate arranged on the host of the high pressure injector, the front surface of the guide pressure plate is provided with a branch pipe connecting seat, the branch pipe connecting seat comprises a connecting pipe communicated with the injection branch pipe, and the connecting pipe is provided with an elastic wall; the guide pressure plate is further provided with an ejector rod switch assembly, the ejector rod switch assembly comprises a mounting seat and a driving mechanism and an ejector rod connected in linkage, the driving mechanism, the mounting seat and the guide pressure plate are sequentially connected, and one end of the ejector rod is arranged opposite to the elastic wall.

[0006] As a further improvement of the utility model, the ejector rod switch assembly further comprises a swing arm; the output end of the driving mechanism is provided with a telescopic rod, and the center lines of the telescopic rod and the ejector rod are staggered with each other; the middle part of the swing arm is rotatably connected with the guide pressure plate through a first rotating shaft, the swing arm further comprises a first swing arm and a second swing arm respectively located on the two sides of the middle part, a first slot is arranged on the first swing arm, a second slot is arranged on the second swing arm, a second rotating shaft rotatably connected with the telescopic rod is arranged on the first slot, and a third rotating shaft rotatably connected with the rear end of the ejector rod is arranged on the second slot.

[0007] As a further improvement of the utility model, the ejector rod comprises a guide rod and an ejector rod piece which are connected with each other in a sliding mode, the third rotating shaft is arranged on the guide rod, a limiting screw is arranged between the guide rod and the ejector rod piece, one end of the limiting screw is threadedly connected with the ejector rod piece, and the other end is in sliding fit with the guide rod.

[0008] As a further improvement of the utility model, the top end of the ejector rod piece is provided with a transversely arranged protruding rib which is arranged opposite to the elastic wall.

[0009] As a further improvement of the utility model, the ejector rod switch assembly further comprises an ejector rod guide seat which is fixed opposite to the guide pressing plate, the ejector rod guide seat is provided with a guide hole, and the ejector rod piece is in sliding fit with the guide hole.

[0010] As a further improvement of the utility model, the front side of the ejector rod guide seat is provided with an elastic cover which is located between the elastic wall of the connecting pipe and the ejector rod piece.

[0011] As a further improvement of the utility model, the branch pipe connecting seat comprises a base plate, the base plate is provided with a branch pipe connecting end and a main pipe connecting end, the connecting pipe is connected between the connecting end and the main pipe connecting end, the base plate is provided with a through hole which is matched with one end of the ejector rod, and the elastic wall faces the through hole; the elastic cover is located at the rear side of the base plate, and the connecting pipe is located at the front side of the base plate.

[0012] As a further improvement of the utility model, the telescopic rod of the driving mechanism is linked with an inductive switch, the inductive switch comprises a baffle and an inductor which are relatively movable, the baffle is connected with the telescopic rod, and the inductor is arranged on the mounting seat.

[0013] Beneficial effects

[0014] Compared with the prior art, the injection branch pipe switch device of the high-pressure injector has the following advantages:

[0015] 1. The injection branch pipe is communicated with the connecting pipe of the branch pipe connecting seat, and the on-off of the injection branch pipe is realized by the extrusion of the ejector rod on the elastic wall of the connecting pipe. When the front end of the ejector rod flattens the elastic wall, the injection branch pipe is closed, and the liquid cannot pass through; when the front end of the ejector rod is retracted, the pipe diameter of the connecting pipe returns to the original state, and the injection branch pipe restores the conduction state. When the ejector rod switch assembly needs to be overhauled and replaced, the injection branch pipe does not need to be disassembled, the liquid in the injection branch pipe can be prevented from flowing out, and the clean working environment is ensured.

[0016] 2. Due to the large size of the drive mechanism, in order to connect multiple injection branches on the smaller branch connection seat and allow different drive mechanisms to control the on / off state of different injection branches, the center lines of the telescopic rod and the push rod of the drive mechanism are set to be staggered. This allows for a smaller distance between different push rods, and different drive mechanisms will not interfere with each other.

[0017] 3. A return spring is provided between the guide rod and the push rod component of the push rod, so that the front end of the push rod component applies pressure to the elastic wall of the connecting pipe more gently, ensuring that the elastic wall of the connecting pipe is not easily broken due to excessive deformation speed.

[0018] 4. Adding raised ribs can reduce the contact area between the final draft and the elastic wall, making the elastic wall of the connecting pipe easier to deform without changing the power of the drive mechanism, thus improving the success rate of shut-off.

[0019] 5. The guide hole of the push rod guide seat guides the push rod.

[0020] 6. The elastic cover itself can act as a buffer during the compression of the elastic wall by the top rod. In addition, if the elastic wall of the connecting pipe breaks and liquid leaks out, the elastic cover can block the liquid, prevent the liquid from flowing along the top rod and contacting the drive mechanism, and avoid short circuits in electrical components.

[0021] 7. The telescopic rod of the drive mechanism is linked with the induction switch. The induction switch can be electrically connected to the system controller, so that the controller can determine the real-time opening and closing status of the injection tube based on the signal from the induction switch.

[0022] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 One of the perspective views of the injection manifold switch device of a high-pressure injector;

[0025] Figure 2 The second perspective view of the injection manifold switch device of a high-pressure injector;

[0026] Figure 3 This is a three-dimensional view of the branch pipe connector.

[0027] Figure 4 is one of the perspective views of the ejector rod switch assembly;

[0028] Figure 5 is one of the perspective views of the ejector rod switch assembly;

[0029] Figure 6 is a side view of the ejector rod switch assembly;

[0030] Figure 7 is a perspective view of the ejector rod;

[0031] Figure 8 is a sectional view of the ejector rod. DETAILED DESCRIPTION

[0032] Embodiments of the present application will now be described with reference to the accompanying drawings.

[0033] Embodiments

[0034] As shown in the specific embodiments of the present application, Figures 1 to 8 a high-pressure syringe injection branch pipe switch device, comprising a guide pressing plate 1 arranged on a high-pressure syringe main machine, the front surface of the guide pressing plate 1 is provided with a branch pipe connecting seat 2, the branch pipe connecting seat 2 comprises a connecting pipe 24 in communication with an injection branch pipe 8, and the connecting pipe 24 is provided with an elastic wall 241. The guide pressing plate 1 is further provided with an ejector rod switch assembly 3, the ejector rod switch assembly 3 comprises a mounting seat 31 and a driving mechanism 32 and an ejector rod 36 in linkage, the driving mechanism 32, the mounting seat 31 and the guide pressing plate 1 are sequentially connected, the driving mechanism 32 and the mounting seat 31 are both arranged on the rear side of the guide pressing plate 1, the ejector rod 36 penetrates through the guide pressing plate 1, and one end of the ejector rod 36 is arranged opposite to the elastic wall 241.

[0035] In the embodiment, three driving mechanisms 32 are arranged on the rear side of the guide pressing plate 1, and each driving mechanism 32 controls one ejector rod 36. The ejector rod switch assembly 3 further comprises a swing arm 33. The output end of the driving mechanism 32 is provided with a telescopic rod 321, and the center lines of the telescopic rod 321 and the ejector rod 36 are staggered. The swing arm 33 is rotationally connected to the guide pressing plate 1 through a first rotating shaft 11 in the middle part, and further comprises a first swing arm 331 and a second swing arm 332 located on the two sides of the middle part respectively, the first swing arm 331 is provided with a first slot 333, the second swing arm 332 is provided with a second slot 334, the first slot 333 is provided with a second rotating shaft 34 rotationally connected with the telescopic rod 321, and the second rotating shaft 34 can slide along the first slot 333; the second slot 334 is provided with a third rotating shaft 35 rotationally connected with the rear end of the ejector rod 36, and the third rotating shaft 35 can slide along the second slot 334. When the telescopic rod 321 of the driving mechanism 32 moves linearly and reciprocally and pulls the swing arm 33, the swing arm 33 also drives the ejector rod 36 to move linearly and reciprocally.

[0036] The top rod 36 comprises a guide rod 361 and a top rod piece 362 which are connected with each other in sliding mode, and the third rotating shaft 35 is arranged on the guide rod 361, and a limiting screw 364 is arranged between the guide rod 361 and the top rod piece 362. One end of the limiting screw 364 is threadedly connected with the top rod piece 362, and the other end of the screw rod head is in sliding fit with the guide rod 361. A reset spring 365 is further arranged between the guide rod 361 and the top rod piece 362, and the reset spring 365 is sleeved outside the limiting screw 364.

[0037] The top end of the top rod piece 362 is provided with a transversely arranged convex rib 363 which is arranged opposite to the elastic wall 241. The length of the convex rib 363 is greater than the width, and the length is not less than the width of the elastic wall 241 of the connecting pipe 24.

[0038] The top rod switch assembly 3 further comprises a top rod guide seat 37 which is fixed opposite to the guide pressing plate 1, and the top rod guide seat 37 is provided with three guide holes 371, and the top rod pieces 362 of the three top rods 36 are respectively in sliding fit with the three guide holes 371.

[0039] The front side of the top rod guide seat 37 is provided with an elastic cover 4 which covers the front end of the entire top rod guide seat 37. The elastic cover 4 is located between the top rod piece 362 and the elastic wall 241 of the connecting pipe 24. The three top rods 36 are all located at the rear side of the elastic cover 4. The elastic cover 4 is made of silica gel material. The elastic cover 4 itself can play a buffering role in the process of extruding the elastic wall 241 by the top rod piece 362, and in addition, if the elastic wall 241 of the connecting pipe 24 is broken and liquid seeps out, the elastic cover 4 can block the liquid to prevent the liquid from flowing along the top rod 26 and contacting the driving mechanism 32, thereby avoiding the problem of short circuit of the electric element.

[0040] In the embodiment, the branch pipe connecting seat 2 comprises a circular base plate 21, the base plate 21 is provided with three branch pipe connecting ends 22 and one connecting pipe connecting end 23, the three branch pipe connecting ends 22 are respectively connected with the output ends of the three injection branch pipes 8, the connecting pipe 24 is connected between the connecting ends 22 and the connecting pipe connecting end 23, the base plate 21 is provided with three through holes 25, the three through holes 25 respectively correspond to the positions of the one ends of the three top rods 36, and the elastic wall 241 faces the through holes 25. The elastic cover 4 is located at the rear side of the base plate 21, and the connecting pipe 24 is located at the front side of the base plate 21.

[0041] The driving mechanism 32 adopts an electromagnetic valve. The telescopic rod 321 of the driving mechanism 32 is linked with an induction switch 5, and the induction switch 5 comprises a blocking plate 51 and an inductor 52 which are relatively movable, the blocking plate 51 is connected with the telescopic rod 321, and the inductor 52 is arranged on the mounting seat 31. The inductor 52 can adopt an optical sensor, and is electrically connected with the controller of the high-pressure syringe system, so that the controller can judge the real-time opening and closing state of the injection branch pipe according to the signal of the induction switch.

[0042] When the telescopic rod 321 of the driving mechanism 32 is retracted, the front end of the ejector rod 36 moves forward and partially flattens the elastic wall 241, at this time the injection branch pipe 8 is closed and liquid cannot pass through, the baffle 51 moves backward and passes through the inductor 52, and the inductor 52 sends a signal to the controller; when the telescopic rod 321 of the driving mechanism 32 is extended forward, the front end of the ejector rod 36 is retracted, the pipe diameter of the connecting pipe 24 returns to the original state, the injection branch pipe 8 restores the open state, at this time the baffle 51 moves forward and leaves the inductor 52, and the inductor 52 does not send a signal to the controller.

[0043] The utility model has been described above in combination with the best embodiment, but the utility model is not limited to the above disclosed embodiments, and should cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. A high pressure syringe injection branch switch device comprising a guide pressure plate (1) provided on a high pressure syringe main machine, characterized in that, The front side of the guide pressing plate (1) is provided with a branch pipe connecting seat (2), the branch pipe connecting seat (2) comprises a connecting pipe (24) communicated with the injection branch pipe (8), the connecting pipe (24) is provided with an elastic wall (241); the guide pressing plate (1) is further provided with a ejector rod switch assembly (3), the ejector rod switch assembly (3) comprises a mounting seat (31) and a driving mechanism (32) and an ejector rod (36) connected in linkage, the driving mechanism (32), the mounting seat (31) and the guide pressing plate (1) are sequentially connected, and one end of the ejector rod (36) is arranged opposite to the elastic wall (241).

2. A high pressure syringe injection branch switch device according to claim 1, characterized in that, The ejector rod switch assembly (3) further comprises a swing arm (33); the output end of the driving mechanism (32) is provided with a telescopic rod (321), the center lines of the telescopic rod (321) and the ejector rod (36) are staggered with each other; the middle part of the swing arm (33) is rotationally connected with the guide pressing plate (1) through a first rotating shaft (11), the swing arm (33) further comprises a first swing arm (331) and a second swing arm (332) located on the two sides of the middle part respectively, the first swing arm (331) is provided with a first slot (333), the second swing arm (332) is provided with a second slot (334), the first slot (333) is provided with a second rotating shaft (34) rotationally connected with the telescopic rod (321), and the second slot (334) is provided with a third rotating shaft (35) rotationally connected with the rear end of the ejector rod (36).

3. A high pressure syringe injection branch switch device according to claim 2, wherein, The ejector rod (36) comprises a guide rod (361) and an ejector rod piece (362) connected in sliding mode, the third rotating shaft (35) is arranged on the guide rod (361), a limiting screw (364) is arranged between the guide rod (361) and the ejector rod piece (362), one end of the limiting screw (364) is threadedly connected with the ejector rod piece (362), and the other end is slidingly matched with the guide rod (361); a reset spring (365) is further arranged between the guide rod (361) and the ejector rod piece (362).

4. A high pressure syringe injection branch switch device according to claim 3, wherein The top end of the ejector rod piece (362) is provided with a transversely arranged convex rib (363), and the convex rib (363) is arranged opposite to the elastic wall (241).

5. A high pressure syringe injection branch switch device according to claim 3, wherein, The ejector rod switch assembly (3) further comprises an ejector rod guide seat (37), the ejector rod guide seat (37) is fixed opposite to the guide pressing plate (1), the ejector rod guide seat (37) is provided with a guide hole (371), and the ejector rod piece (362) is slidingly matched with the guide hole (371).

6. A high pressure syringe injection branch switch device according to claim 5, wherein, The front side of the ejector rod guide seat (37) is provided with an elastic cover (4), and the elastic cover (4) is located between the ejector rod piece (362) and the elastic wall (241) of the connecting pipe (24).

7. A high pressure syringe injection manifold switch device according to claim 6, wherein, The branch pipe connecting seat (2) comprises a base plate (21), the base plate (21) is provided with a branch pipe connecting end (22) and a main pipe connecting end (23), the connecting pipe (24) is connected between the connecting end (22) and the main pipe connecting end (23), the base plate (21) is provided with a through hole (25), the through hole (25) is matched with one end of the ejector rod (36), and the elastic wall (241) faces the through hole (25); the elastic cover (4) is located on the rear side of the base plate (21), and the connecting pipe (24) is located on the front side of the base plate (21).

8. A high pressure syringe injection branch switch device according to claim 2, wherein, The telescopic rod (321) of the driving mechanism (32) is linked with an inductive switch (5), the inductive switch (5) comprises a movable baffle (51) and an inductor (52), the baffle (51) is connected with the telescopic rod (321), and the inductor (52) is arranged on the mounting seat (31).

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