Drainage device for high-pressure injector

Abstract

The utility model relates to the field of medical auxiliary instruments, in particular to a liquid drainage device for a high-pressure injector, which comprises a case, moving wheels, a bearing seat, a main arm, a supporting arm, a placing frame, a high-pressure injector body, screws and the like. Moving wheels are arranged at all corners of the bottom of the case, a bearing seat is arranged in the middle of the top of the case, a main arm is hinged to the top of the bearing seat, a supporting arm is hinged to the top of the main arm, a placing frame is arranged on one side of the main arm, a high-pressure injector body is hinged to one side of the supporting arm, and a screw penetrates through the hinged position of the high-pressure injector body and the supporting arm in a threaded mode. The two sides of the front portion of the high-pressure injector body are connected with injection barrels, and piston push rods are arranged in the injection barrels in a sliding mode. By means of the detachable connection mode between the liquid discharge pipe and the injection cylinder, when liquid discharge is not carried out, the device can be rapidly converted into an injection state, use is convenient and fast, and operation is easy; and during liquid drainage, the liquid drainage mode can be quickly recovered, so that the operation process is simplified, and high-efficiency operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary devices, and more specifically, to a liquid discharge device for a high-pressure injector. Background Technology

[0002] A high-pressure injector is a device typically used in the medical field, primarily in radiological imaging procedures such as CT scans or angiography, to better observe the condition of blood vessels or organs.

[0003] For example, Chinese patent CN211536018U discloses a high-pressure injector discharge device. This patent aims to solve the problems of existing high-pressure injectors lacking shock absorption and telescopic devices, which may cause liquid to spill from the guide column and make injector height adjustment inconvenient when the device is moved. The aforementioned patent achieves buffering and shock absorption by incorporating a shock-absorbing column, a fixing column, a fixing groove, a spring, and a shock-absorbing groove; and achieves height adjustment of the high-pressure injector discharge device by incorporating a telescopic column, a threaded groove, a threaded rod, a coupling, and a motor.

[0004] While the aforementioned patents have addressed the issues of liquid spillage during device movement and the inconvenience of adjusting syringe height, they have not focused on the issue of drainage after the high-pressure injector has been used. Drainage is a crucial factor in determining the efficiency of subsequent high-pressure injections. If drainage is incomplete, residual contrast agent or other medications may remain inside the injection head, potentially leading to bacteria and cross-infection risks during subsequent treatments, thus affecting treatment efficiency.

[0005] Therefore, there is an urgent need to design a drainage device for high-pressure injectors to solve the above-mentioned technical problems. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, the present invention provides a draining device for a high-pressure injector.

[0007] The technical solution of this utility model is as follows: a draining device for a high-pressure injector, comprising a housing, casters, a support, a main arm, a support arm, a mounting frame, a high-pressure injector body, screws, syringes, a piston rod, a drain pipe, a three-way valve, and a waste liquid tank. Casters are provided at each corner of the bottom of the housing. A support is provided at the center of the top of the housing. The main arm is hinged to the top of the support, and the support arm is hinged to the top of the main arm. A mounting frame is provided on one side of the main arm, and the high-pressure injector body is hinged to one side of the support arm. A screw is threaded through the hinge between the high-pressure injector body and the support arm. Syringes are connected to both sides of the front of the high-pressure injector body. A piston rod is slidably installed inside the syringe. A thread is provided on the outer side of the end of the syringe. The outer sides of the two syringe ends are connected by threads to a drain pipe with the same outlet. A three-way valve is provided at the three-way connection point at the bifurcation of the drain pipe. A waste liquid tank is provided in a pull-out manner in the lower part of the housing. A connector corresponding to the discharge port of the drain pipe is provided at the upper end of the waste liquid tank.

[0008] In one embodiment, the placement rack has at least two placement openings, both of which are adapted to the outer diameter of the drain pipe.

[0009] In one embodiment, a nut is also included, with the lower part of the drain pipe rotatably provided near the outlet.

[0010] In one embodiment, the device further includes a motor, a cam, a piston rod, a sealing cylinder, a first spring, a tee pipe, an output sleeve, a ball valve, a second spring, and a return pipe. A motor is mounted on one side of the top of the chassis, and a cam is mounted on the motor's output shaft. A piston rod is slidably mounted on one side of the top of the chassis, with its end slidingly contacting a rear cam. When the cam rotates, the piston rod engages with it. A sealing cylinder is located on the front side of the top of the chassis, and the piston head of the piston rod is located inside the sealing cylinder and slides in contact with the inner wall of the sealing cylinder. A first spring is mounted inside the sealing cylinder. A spring is connected to the piston head of the piston rod at one end. A three-way pipe is connected to the front end of the sealing cylinder. An output sleeve is connected to the outlet at the lower end of the three-way pipe. The lower end of the output sleeve is inserted into the upper part of the waste liquid tank. There are two ball valves and two springs. One ball valve is installed in the interface between the output sleeve and the three-way pipe. A second spring is installed between the outer side of the ball valve at the first location and the output sleeve. A drain pipe is connected to the outlet at the right end of the three-way pipe. Another ball valve is installed in the interface between the drain pipe and the three-way pipe. Another second spring is installed between the other ball valve and the drain pipe.

[0011] In one embodiment, the outer side of the composite tube is provided with threads corresponding to the inner side of the nut.

[0012] In one embodiment, the drain pipe and the re-drain pipe have the same diameter, and their ends can be joined together.

[0013] In one embodiment, the output sleeve is elastic and its lower part can be pulled out from the upper part of the waste liquid tank.

[0014] The present invention has the following advantages: 1. The present invention uses a detachable connection between the drain tube and the syringe to quickly switch the device to the injection state when not draining, which is convenient and easy to use; while when draining, it can quickly return to the draining mode, thereby simplifying the operation process and achieving high-efficiency operation.

[0015] 2. This utility model uses a combination of a motor and a cam to mechanically drive the drainage action, reducing the user's operational burden while improving drainage speed and accuracy.

[0016] 3. This utility model enhances the flexibility of the drainage process by adjusting the rotation of the three-way valve to drain the liquid; the use of a sealing cylinder and a first spring ensures the sealing during the drainage process and effectively prevents liquid leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the high-pressure injector body, screws, and injection cylinder of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the motor, cam, and piston rod.

[0020] Figure 4 This is a three-dimensional sectional view of the components of this utility model, including the three-way pipe, output sleeve, and ball valve.

[0021] In the attached diagrams: 1: Chassis, 2: Casters, 3: Support, 31: Main arm, 32: Support arm, 4: Placement frame, 5: High-pressure injector body, 6: Screw, 7: Injection cylinder, 71: Piston rod, 8: Drain pipe, 81: Nut, 9: Three-way valve, 10: Motor, 11: Cam, 12: Piston rod, 13: Sealing cylinder, 14: First spring, 15: Three-way pipe, 16: Output sleeve, 17: Ball valve, 18: Second spring, 19: Recirculation pipe, 20: Waste liquid tank. Detailed Implementation

[0022] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Example: A discharge device for a high-pressure injector, such as Figures 1-4 As shown, the device includes a housing 1, casters 2, a support 3, a main arm 31, a support arm 32, a mounting frame 4, a high-pressure injector body 5, screws 6, a syringe 7, a piston rod 71, a drain pipe 8, a three-way valve 9, and a waste liquid tank 20. The housing 1 serves as the basic carrier for supporting all components. Casters 2 are installed at each corner of the bottom of the housing 1 to assist in the overall movement of the device and improve its flexibility. A support 3 is located at the center of the top of the housing 1, serving as the main stress point. The main arm 31 is hinged to the top of the support 3, and the main arm 31 rotates around the support 3. To achieve angle and height adjustment of the support arm 32 component, the support arm 32 is hinged to the top of the main arm 31. A placement bracket 4 with two placement ports is welded to the left side of the main arm 31, both ports being adapted to the outer diameter of the drain tube 8. These placement ports are used to place the drain tube 8 when it is not in use. A high-pressure injector body 5 is hinged to the right side of the support arm 32. The high-pressure injector body 5, as the core component of the device, is responsible for injecting contrast agents or other drugs into the patient's blood vessels at extremely high pressure. The injection process requires the combined use of the syringe 7 and the piston rod 7. 1. A screw 6 is threaded through the hinge joint between the high-pressure injector body 5 and the support arm 32. The screw 6 secures the high-pressure injector body 5, ensuring stable installation. Injection cylinders 7 are connected to the left and right sides of the front of the high-pressure injector body 5 to store and push liquids (such as contrast agents). The injection cylinders 7, through the reciprocating motion of the piston rod 71, can precisely control the injection volume and speed. The piston rod 71 slides inside the injection cylinder 7. Threads are provided on the outer side of the ends of the injection cylinders 7. The outer sides of the two ends of the injection cylinders 7 are connected by threads to a common... A drain pipe 8 with an outlet is used to drain the liquid in the syringe 7. The drain pipe 8 is connected by threads to ensure a seal between the drain pipe 8 and the syringe 7, ensuring no leakage during the draining process. The threaded structure makes it easy to disassemble and clean. A three-way valve 9 is installed at the three-way connection of the fork at the top of the drain pipe 8. The three-way valve 9 is used to control the flow direction of the liquid and select the draining path. A waste liquid tank 20 is installed in the lower part of the casing 1. The waste liquid tank 20 is used to collect waste liquid during the draining process. The upper end of the waste liquid tank 20 is equipped with a connector corresponding to the discharge port of the drain pipe 8.

[0024] like Figure 1 As shown, it also includes a nut 81. The nut 81 is rotatably installed at the lower part of the drain pipe 8 near the outlet. The nut 81 is used to fix the position of the drain pipe 8 so as to facilitate the disassembly, assembly and cleaning of the drain pipe 8.

[0025] like Figure 1 , Figure 3 and Figure 4As shown, it also includes a motor 10, a cam 11, a piston rod 12, a sealing cylinder 13, a first spring 14, a three-way pipe 15, an output sleeve 16, a ball valve 17, a second spring 18, and a return pipe 19. The motor 10 is located on the top left rear side of the housing 1. A cam 11 is mounted on the output shaft of the motor 10 via a coupling. The motor 10 and the cam 11 drive the piston rod 12 to move, generating the driving force required for drainage or cleaning, thus improving the automation level of drainage and cleaning. The piston rod 12 is slidably mounted on the top left side of the housing 1. The rear end of the piston rod 12 slides in contact with the rear cam 11. When the cam 11 rotates, the piston rod 12... In conjunction with this, a sealing cylinder 13 is provided on the front top of the casing 1. The piston head of the piston rod 12 is located inside the sealing cylinder 13 and slides in contact with the inner wall of the sealing cylinder 13. The piston rod 12 reciprocates inside the sealing cylinder 13, pushing the liquid through the drainage path to ensure that the liquid can be smoothly discharged from the drainage pipe 8 while maintaining a seal. A first spring 14 is provided inside the sealing cylinder 13. The end of the first spring 14 is connected to the piston head of the piston rod 12. The first spring 14 provides a rebound force to reset the piston rod 12 in the non-drive state, reducing energy consumption. A three-way pipe 15 is connected to the front end of the sealing cylinder 13 for connecting... The sealing cylinder 13, the output sleeve 16, and the return pipe 19 form a liquid flow channel to ensure smooth liquid passage. The output sleeve 16 is connected to the outlet at the lower end of the three-way pipe 15. The lower end of the output sleeve 16 is inserted into the upper part of the waste liquid tank 20, and the lower part of the output sleeve 16 can be pulled out from the upper part of the waste liquid tank 20. There are two ball valves 17 and two springs 18. One ball valve 17 is installed at the interface between the output sleeve 16 and the three-way pipe 15. A second spring 18 is installed between the outer side of the first ball valve 17 and the output sleeve 16. The return pipe 19 is connected to the outlet at the right end of the three-way pipe 15. The drain pipe 8 and the return pipe 19... The pipes 19 have the same diameter and their ends can be joined together. The outer side of the secondary pipe 19 is provided with a thread corresponding to the inner side of the nut 81. Another ball valve 17 is provided in the interface between the secondary pipe 19 and the tee pipe 15. Another second spring 18 is provided between the other ball valve 17 and the secondary pipe 19. The ball valve 17 and the second spring 18 control the flow of liquid in the output sleeve 16 or the secondary pipe 19, ensuring that it only opens when the pressure is high enough to prevent backflow and leakage. The output sleeve 16 and the secondary pipe 19 provide a path for drainage or cleaning, and the flow of liquid is controlled by the ball valve 17, which enhances the flexibility of the drainage system.

[0026] Before use, first fix the high-pressure injector body 5 to the support arm 32 with screws 6 and adjust it to a suitable injection angle. Install the syringe 7 on the high-pressure injector body 5 and ensure that the piston rod 71 can slide freely to control the injection and assist the drainage step after the three-way valve 9 is opened. Connect the drainage pipe 8 to the syringe 7 and ensure that the outlet of the drainage pipe 8 is aligned with the connector of the waste liquid tank 20. Push the waste liquid tank 20 into the machine box 1 and ensure that the connector at its upper end is aligned with the discharge port of the drainage pipe 8. When drainage is not required, the operator can loosen the nut 81 at the bottom of the drainage pipe 8 and then remove the drainage pipe 8 from the syringe 7. After removing the drainage pipe 8, connect the needle to the injection end of the syringe 7 to facilitate the injection operation. When not in use, the drainage pipe 8 can be inserted into the placement port of the placement rack 4 for the next use.

[0027] During drainage, the operator needs to reconnect the drainage pipe 8 to the syringe 7 and tighten the nut 81. Then, start the motor 10. The motor 10 drives the cam 11 to rotate via the output shaft. The cam 11 contacts the end of the piston rod 12, causing the piston rod 12 to reciprocate within the sealed cylinder 13. The movement of the piston rod 12 compresses the first spring 14 within the sealed cylinder 13, simultaneously pushing the liquid within the sealed cylinder 13 through the three-way pipe 15 to the output sleeve 16. In the output sleeve 16 path, when the liquid pressure exceeds the elastic force of the second spring 18, the ball valve 17 opens, and the liquid enters the waste liquid tank 20. By adjusting the opening path of the three-way valve 9, the specific path for liquid drainage can be selected. If drainage is required through the return drain pipe 19, the liquid pushes the ball valve 17 within the return drain pipe 19 to open, and the liquid flows into the waste liquid tank 20.

[0028] When cleaning components such as the drain pipe 8 and the three-way pipe 15, one end of the drain pipe 8 can be connected to the water source, ensuring that the drain pipe 8 and the re-drain pipe 19 have the same diameter and that their ends can be connected to ensure unobstructed water flow. Start the motor 10, which drives the piston rod 12 through the cam 11 to generate water pressure. The water flows through the three-way pipe 15 and the drain pipe 8 into the system, using the flushing action of the water flow to clean the drain pipe 8 and related components. The cleaned water eventually flows into the waste liquid tank 20. After completing the draining or cleaning, stop the motor 10 and the piston rod 12 returns to its original position under the action of the first spring 14. If it is a cleaning operation, the operator should pull the waste liquid tank 20 out of the casing 1, clean the residual water or waste liquid inside, check whether the drain pipe 8 and other related components are clean, and repeat the cleaning steps if necessary. Finally, insert the drain pipe 8 back into the placement port of the placement rack 4, waiting for the next use.

[0029] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A drainage device for a high-pressure syringe, comprising an organic box (1); characterized in that, The utility model also includes mobile wheel (2), bearing (3), main arm (31), support arm (32), placing rack (4), high pressure injector body (5), screw (6), injection cylinder (7), piston push rod (71), drain pipe (8), three-way valve (9) and waste liquid tank (20), mobile wheel (2) is arranged at each corner of the bottom of cabinet (1), bearing (3) is arranged at the top of cabinet (1) in the middle, the top of bearing (3) is hinged with main arm (31), the top of main arm (31) is hinged with support arm (32), placing rack (4) is arranged on one side of main arm (31), high pressure injector body (5) is hinged on one side of support arm (32), screw (6) is threadedly penetrated and arranged at the hinge of high pressure injector body (5) and support arm (32), injection cylinder (7) is connected on both sides of the front of high pressure injector body (5), piston push rod (71) is slidably arranged in injection cylinder (7), the outside of the end of injection cylinder (7) is provided with a thread, the outside of the end of two injection cylinders (7) is jointly screwed with drain pipe (8) with the same discharge port, three-way valve (9) is arranged at the three-way communication of the bifurcation of the upper part of drain pipe (8), waste liquid tank (20) is pullably arranged in the lower part of cabinet (1), the upper end of waste liquid tank (20) is provided with the joint corresponding to the discharge port of drain pipe (8).

2. A drain for a high pressure syringe as defined in claim 1, characterized in that: Placing rack (4) is provided with at least two placing openings, and the two placing openings are adapted to the outer diameter of drain pipe (8).

3. A drain for a high pressure syringe as defined in claim 2, wherein: The utility model also includes nut (81), and nut (81) is rotatably arranged at the lower part of drain pipe (8) near the discharge port.

4. A drain for a high pressure syringe as defined in claim 3, wherein: The utility model also includes motor (10), cam (11), piston rod (12), sealing cylinder (13), first spring (14), three-way pipe (15), output sleeve (16), ball valve (17), second spring (18) and complex drain pipe (19), motor (10) is arranged on one side of the top of cabinet (1), cam (11) is arranged on the output shaft of motor (10), piston rod (12) is slidably arranged on one side of the top of cabinet (1), the end of piston rod (12) is in sliding contact with rear cam (11), when cam (11) rotates, piston rod (12) cooperates with it, And with the sealing cylinder (13) inner wall sliding contact, sealing cylinder (13) is provided with a first spring (14) inside, the first spring (14) end with piston head of piston rod (12) is connected, sealing cylinder (13) front end is connected with three-way pipe (15), three-way pipe (15) lower end of the outlet on the output sleeve (16) is connected, output sleeve (16) lower end is inserted in the waste liquid tank (20) inside the upper part, ball valve (17) and second spring (18) are both two, output sleeve (16) and three-way pipe (15) interface inside is provided with one of its ball valve (17), the first ball valve (17) outside and between the output sleeve (16) is provided with one of its second spring (18), three-way pipe (15) right end of the outlet on the complex pipe (19) is connected, complex pipe (19) and three-way pipe (15) corresponding interface is provided with another ball valve (17), another ball valve (17) and complex pipe (19) between the second spring (18) is provided with another.

5. A drain for a high pressure syringe as defined in claim 4, wherein: The complex pipe (19) outside is provided with a corresponding thread on the inside of the nut (81).

6. A drain for a high pressure syringe as defined in claim 5, wherein: The drain pipe (8) and the complex pipe (19) have the same diameter, and the ends of the two can be docked.

7. A drain for a high pressure syringe as defined in claim 6, wherein: The output sleeve (16) has a certain elasticity, and its lower part can be pulled out from the upper part of the waste liquid tank (20).

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