A roller type high pressure injector

Abstract

The present invention discloses a roller-type high-pressure injector, which relates to a high-pressure injector and solves the technical problems that the injection method using an electric pusher has many consumables, high equipment costs, and is easy to affect the stability of the injection. It includes a shell and a base; a support plate is installed on one side of the shell, and a plurality of medicine bottle fixing seats are installed above the support plate, and a switch structure with the same number as the medicine bottle fixing seats is provided below the medicine bottle fixing seats; an extrusion roller is provided below the switch structure, and an extrusion plate is slidably installed on the support plate below the extrusion roller, and a locking mechanism is provided below the extrusion plate, and a positioning protection mechanism is provided on the outside of the locking mechanism. The present invention is simple to operate, safe and reliable, greatly reduces consumables and costs, and also avoids the problem of large vibrations to which the high-pressure injector is subjected when the injection is pushed by an electric injection syringe.

Description

Technical Field

[0001] The present invention relates to a high-pressure injector, and more particularly to a roller-type high-pressure injector. Background Art

[0002] As an auxiliary device in the radiological diagnosis and treatment system, the high-pressure injector is gradually used in clinical practice with the development of technologies such as X-ray, fast film changer, image intensifier and artificial contrast agent. The basic function of the high-pressure injector is to quickly and accurately inject a sufficient amount of high-concentration X-ray contrast agent into the examination site, so as to perform diagnostic imaging and treatment on the lesion site. In order to achieve rapid injection, most of the current injection mechanisms use electric pushers to push the injection. When in use, the piston rod and syringe are installed on the electric pusher in turn, and then the syringe is inserted into the medicine bottle, and the electric pusher is operated to absorb the corresponding amount of medicine from the syringe. Finally, the electric pusher is installed above the high-pressure injector and connected to the injection pipe for injection. Since the piston rod and syringe are both disposable consumables, the consumables of this injection method are relatively high. Moreover, at least two kinds of medicines (contrast agent and saline) need to be injected during injection. This requires that the high-pressure injector must be equipped with more than two electric pushers. This not only increases the cost of the high-pressure injector, but also causes the high-pressure injector to be subjected to greater vibration when the two electric pushers work at the same time, affecting the stability of the injection process of the high-pressure injector. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a roller-type high-pressure injector in view of the deficiencies in the prior art, which solves the problems of injection by an electric pusher, which consumes a lot of materials, has high equipment costs, and easily affects the stability of injection.

[0004] A roller-type high-pressure syringe described in the present invention comprises a shell and a base; a support plate is installed on one side of the shell, a plurality of medicine bottle fixing seats are installed above the support plate, switch structures whose number is the same as that of the medicine bottle fixing seats are provided below the medicine bottle fixing seats, an extrusion roller is provided below the switch structure, an extrusion plate is slidably installed on the support plate below the extrusion roller, a pipeline installation channel is provided between the extrusion plate and the extrusion roller, a locking mechanism for locking the injection pipeline in the pipeline installation channel is provided below the extrusion plate, and a positioning protection mechanism for positioning the locking mechanism is provided on the outer side of the locking mechanism.

[0005] The locking mechanism comprises a handle and a cam, wherein the handle is rotatably mounted on the support plate, the cam is fixedly mounted on the handle, and the cam is connected to the extrusion plate.

[0006] The positioning protection mechanism includes a protection panel and multiple locks; one side of the protection panel is hingedly mounted on the support plate, and the other side of the protection panel is connected to the support plate through the lock, and the protection panel is located on the outside of the handle and extends to the bottom of the medicine bottle fixing seat; a limiting groove is provided on the side of the protection panel close to the support plate, and the handle is inserted into the limiting groove.

[0007] A positioning plate is provided above the cam, the positioning plate is slidably connected to the support plate, and the end surface of the positioning plate is in contact with the cam, and the positioning plate is elastically connected to the extrusion plate through a spring.

[0008] A branch pipe positioning seat is provided below the medicine bottle fixing seat, and a branch pipe positioning groove is provided in the branch pipe positioning seat.

[0009] A main pipe positioning seat is arranged on the support plate on one side of the extrusion roller, and a main pipe positioning groove is arranged in the main pipe positioning seat; a main pipe guide groove penetrating through the side wall of the support plate is arranged on the support plate on the other side of the extrusion roller.

[0010] A guide seat is installed in the main pipe guide groove, and a pressure sensor is installed in the guide seat.

[0011] A positioning groove is provided on the top of the base, a medical waste recycling bin is inserted into the positioning groove, a fixing hoop is provided on the outer side of the medical waste recycling bin, and the fixing hoop is installed on the support plate.

[0012] The switch structure includes a mounting seat, a pushing rod, a positioner and two connecting rod mechanisms; the mounting seat is installed on a side of the support plate close to the shell, the pushing rod is movably inserted in the mounting seat, and a spring is sleeved on the pushing rod inserted in the mounting seat; the positioner is installed on the other side of the support plate, a pipeline channel is provided between the positioner and the support plate, one end of the pushing rod passes through the support plate and is inserted in the pipeline channel; a driver is installed in the base, the two connecting rod mechanisms are hingedly connected to the mounting seat, one end of the two connecting rod mechanisms is movably inserted in the pushing rod, and the other end of the two connecting rod mechanisms is connected to the driver.

[0013] The extrusion roller includes a wheel disc and multiple extrusion wheels; a driving mechanism is installed in the base, the wheel disc is rotatably installed on the side wall of the support plate, the wheel disc is connected to the driving end of the driving mechanism, and the multiple extrusion wheels are rotatably installed on the side of the wheel disc away from the support plate. A positioning pre-pressing wheel is provided between two adjacent extrusion wheels, and the positioning pre-pressing wheel is rotatably connected to the wheel disc.

[0014] Beneficial Effects

[0015] The advantages of the present invention are:

[0016] 1. Through the switch structure, extrusion roller and extrusion plate installed in the shell, the medicines in multiple medicine bottle holders can be squeezed and transported without transferring the medicines to the syringe, which greatly reduces consumables and costs. It also reduces the risk of medicine contamination when transferring medicines, avoids the problem of affecting the injection effect when the electric pusher is working, and improves the reliability of the high-pressure injector.

[0017] 2. The locking mechanism installed under the extrusion plate can lock or release the injection line between the extrusion plate and the extrusion roller, which is convenient for replacing the injection line and is simple and quick to operate. The locking mechanism is locked by the positioning protection mechanism set on its outside, which can effectively avoid the problem of the injection line being loosened due to rotation of the locking mechanism during use, thereby improving the reliability of the high-pressure injector.

[0018] 3. A positioning plate is elastically installed under the extrusion plate, so that the extrusion plate has a certain displacement ability, avoiding the problem of the injection pipeline being deformed or broken due to excessive extrusion force, playing a role in protecting the injection pipeline and greatly improving the reliability of the high-pressure injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the high-pressure injector of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the high-pressure injector of the present invention when the protective panel is opened;

[0021] Figure 3 It is a schematic diagram of the structure of one side inside the high-pressure injector of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the other side inside the high-pressure injector of the present invention;

[0023] Figure 5 It is a schematic diagram of the interior of the mounting structure of the mounting seat, the push rod and the two-link mechanism in the switch structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the top view structure of the positioner of the present invention.

[0025] Wherein: 1-shell, 2-base, 3-support plate, 4-medicine bottle fixing seat, 5-switch structure, 6-extrusion roller, 7-extrusion plate, 8-handle, 9-cam, 10-protection panel, 11-lock, 12-positioning plate, 13-branch pipe positioning seat, 14-main pipe positioning seat, 15-main pipe guide groove, 16-guide seat, 17-medical waste recycling bin, 18-fixing hoop, 19-mounting seat, 20-push rod, 21-locator, 22-two-link mechanism, 23-driver, 24-drive motor, 25-synchronous belt, 26-rotating shaft fixing seat, 27-first placement plate, 28-second placement plate, 29-U-shaped handle, 30-power switch, 31-universal wheel, 32-first locking block, 33-second locking block, 34-limiting groove. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0027] See also Figure 1-Figure 6 A roller-type high-pressure injector of the present invention comprises a housing 1 and a base 2. A support plate 3 is installed on one side of the housing 1, three medicine bottle holders 4 are installed above the support plate 3, and switch structures 5 whose number is the same as that of the medicine bottle holders 4 are provided below the medicine bottle holders 4. The three medicine bottle holders 4 are installed with corresponding medicine bottles and are connected through injection branches. The three switch structures 5 are respectively used to turn off the three injection branches, and the three injection branches merge with the injection pipeline after the switch structures 5. Through the setting of the medicine bottle holders 4, the medicine bottles can be directly installed on the high-pressure injector without the need to transfer the medicine.

[0028] The switch structure 5 includes a mounting seat 19, a push rod 20, a positioner 21 and two connecting rod mechanisms 22. Figure 2In the figure, only the installation structure of one of the positioners 21 is shown. The mounting seat 19 is installed on the side of the support plate 3 close to the shell 1, and the push rod 20 is movably inserted in the mounting seat 19. The push rod 20 inserted in the mounting seat 19 is sleeved with a spring for resetting the push rod 20. The positioner 21 is installed on the other side of the support plate 3, and a pipeline channel is provided between the positioner 21 and the support plate 3 for passing the injection branch. One end of the push rod 20 passes through the support plate 3 and is inserted in the pipeline channel. When the push rod 20 is reset, the push rod 20 is inserted in the pipeline channel to realize the shutoff of the injection branch. A driver 23 is installed in the base 2 for driving two connecting rod mechanisms 22. The two connecting rod mechanisms 22 are hingedly connected to the mounting seat 19, one end of the two connecting rod mechanisms 22 is movably inserted in the push rod 20, and the other end of the two connecting rod mechanisms 22 is connected to the driver 23. When the driver 23 drives the two-link mechanism 22, the two-link mechanism 22 pushes the push rod 20 out of the pipeline channel to achieve the conduction of the pipeline channel. In this process, the spring will be compressed to provide conditions for the push rod 20 to reset. This shut-off method is simple to operate and reliable to shut off, thereby improving the reliability of the high-pressure injector.

[0029] Among them, the two-link mechanism 22 is mainly composed of a straight rod and a V-shaped rod. The V-shaped rod is hingedly connected to the mounting seat 19, and one end of the V-shaped rod is movably inserted in the push rod 20, the other end of the V-shaped rod is hingedly connected to the straight rod, and the end of the straight rod is connected to the driver 23. The driver 23 is a steering gear installed in the base 2, and the driver 23 is connected to the straight rod through a pull rope. The action of the two-link mechanism 22 is realized by the driver winding up the pull rope, so that the push rod 20 is moved out of the pipeline channel. The driver is installed in the base 2, which can effectively reduce the mechanical vibration received by the injection pipeline and other mechanisms on the support plate 3, which is beneficial to the stability of the high-pressure injector.

[0030] Regarding the positioner, it specifically includes a first locking block 32 and a second locking block 33. The first locking block 32 is installed on the support plate 3 through the first fixing seat, and the first locking block 32 is rotatably connected to the first fixing seat. The second locking block 33 is installed on the support plate 3 through the second fixing seat, and the second locking block 33 is rotatably connected to the second fixing seat. A locking groove is provided at one end of the first locking block 32, and one end of the second locking block 33 is inserted in the locking groove. A torsion spring is installed at the other end of the second locking block 33, and one end of the torsion spring is in contact with and connected to the second locking block 33, and the other end of the torsion spring is in contact with and connected to the support plate 3. The pipeline channel is provided between the second locking block 33 and the support plate 3. When the end of the second locking block 33 is inserted in the locking groove of the first locking block 32, the torque force of the torsion spring can prevent the two locking blocks from rotating freely, thereby realizing the locking and positioning of the injection pipeline. It should be noted that a positioning surface and an outer inclined surface are provided on the side of the first locking block 3 close to the support plate 3, and the positioning surface is in contact with the support plate 3. When the first locking block 32 needs to be rotated to unlock the second locking block 33 , the first locking block 32 is pressed to separate its positioning surface from the support plate 3 and to contact the outer inclined surface with the support plate 3 , thereby unlocking the second locking block 33 .

[0031] An extrusion roller 6 is provided below the switch structure 5. An extrusion plate 7 is slidably mounted on the support plate 3 below the extrusion roller 6, a pipeline installation channel is provided between the extrusion plate 7 and the extrusion roller 6, a locking mechanism for locking the injection pipeline in the pipeline installation channel is provided below the extrusion plate 7, and a positioning protection mechanism for positioning the locking mechanism is provided on the outside of the locking mechanism. The pushing of the injection is achieved through the cooperation of the extrusion roller 6 and the extrusion plate 7, without installing an electric pusher on the high-pressure syringe, and without consuming the piston rod and the syringe, thereby reducing consumables.

[0032] The locking mechanism includes a handle 8 and a cam 9. The handle 8 is rotatably mounted on the support plate 3, and the cam 9 is fixedly mounted on the handle 8, and the cam 9 is connected to the extrusion plate 7. The cam 9 is rotated by rotating the handle 8, and the extrusion plate 7 is raised and lowered by changing the position of the cam 9, so that the injection line is locked or loosened, which is convenient for replacing the injection line.

[0033] Preferably, a positioning plate 12 is provided above the cam 9, the positioning plate 12 is slidably connected to the support plate 3, and the end surface of the positioning plate 12 is in contact with the cam 9, and the positioning plate 12 is elastically connected to the extrusion plate 7 through a spring. The positioning plate 12 is elastically connected to the extrusion plate 7, so that the extrusion plate 7 has a certain displacement capacity, avoiding the problem of the injection line being deformed or crushed due to excessive extrusion force, playing a role in protecting the injection line, and greatly improving the reliability of the high-pressure injector.

[0034] Preferably, a screw is screwed under the extrusion plate 7, and the screw is movably inserted in the positioning plate 12 and penetrates the positioning plate 12. A locking nut and a reversing nut are screwed in sequence at one end of the screw that penetrates the positioning plate 12. By adjusting the locking nut under the screw, the spacing between the positioning plate 12 and the extrusion plate 7 can be adjusted to adjust the pressure of the extrusion roller 6 and the extrusion plate 7 on the injection pipeline, so as to better protect the injection pipeline.

[0035] The positioning protection mechanism includes a protection panel 10 and three locks 11. One side of the protection panel 10 is hingedly mounted on the support plate 3, and the other side of the protection panel 10 is connected to the support plate 3 through the lock 11. The protection panel 10 is located on the outside of the handle 8 and extends to the bottom of the medicine bottle fixing seat 4 to cover the squeezing roller 6 and the switch structure 5, thereby protecting the squeezing roller 6 and the switch structure 5 as well as the internal pipeline of the high-pressure syringe. A limiting groove 34 is provided on the side of the protection panel 10 close to the support plate 3, and the handle 8 is inserted into the limiting groove 34 to realize the positioning of the handle 8 and avoid the problem of the injection pipeline being loosened due to the rotation of the handle 8 during use.

[0036] A branch pipe positioning seat 13 is provided below the medicine bottle fixing seat 4 of this embodiment, and a branch pipe positioning groove is provided in the branch pipe positioning seat 13 to realize the positioning of the injection branch pipe. In addition, the width of the branch pipe positioning groove is smaller than the diameter of the injection branch pipe, so when installing the injection branch pipe, it only needs to be directly pressed into the positioning groove, which is simple and convenient to operate.

[0037] A main pipe positioning seat 14 is provided on the support plate 3 on one side of the extrusion roller 6, and a main pipe positioning groove is provided in the main pipe positioning seat 14. The guidance and positioning of the injection pipeline by the main pipe positioning groove is conducive to the injection pipeline accurately falling onto the extrusion surface of the extrusion roller 6, further improving the reliability of the high-pressure injector. A main pipe guide groove 15 that penetrates the side wall of the support plate 3 is provided on the support plate 3 on the other side of the extrusion roller 6. The injection pipeline in the main pipe guide groove 15 is the injection output end. The positioning of the injection pipeline by the main pipe guide groove 15 can effectively avoid the problem of touching the injection pipeline at this end or being clamped by the protection panel 10 when opening and closing the protection panel 10, causing damage.

[0038] A guide seat 16 is installed in the main pipe guide groove 15 for guiding and positioning the injection pipeline. A pressure sensor is installed in the guide seat 16 for detecting the pressure of the injection in the injection pipeline. The pressure sensor is connected to a controller installed in the base 2.

[0039] The extrusion roller 6 of this embodiment includes a wheel disc and three extrusion wheels. A driving mechanism is installed in the base 2, and the driving end of the driving mechanism extends to the support plate 3. The wheel disc is rotatably installed on the side wall of the support plate 3. The wheel disc is connected to the driving end of the driving mechanism. The three extrusion wheels are rotatably installed on the side of the wheel disc away from the support plate 3, which is used to extrude the injection pipeline. Moreover, the rotational installation of the extrusion wheel can effectively avoid the problem of the extrusion wheel tearing the injection pipeline. A positioning pre-pressing wheel is provided between two adjacent extrusion wheels. The positioning pre-pressing wheel is rotatably connected to the wheel disc, which can reduce the problem that the injection pipeline is easily damaged by the instantaneous extrusion force of the injection pipeline when the extrusion wheel is extruded on the injection pipeline, and plays a role in protecting the injection pipeline. It should be noted that a positioning groove is provided in the positioning pre-pressing wheel, and the depth of the positioning groove is less than the diameter of the injection pipeline to achieve positioning pre-pressing of the injection pipeline. A semicircular extrusion groove is provided at the upper end of the extrusion plate 7, and the extrusion roller 6 is inserted in the extrusion groove, and a gap is left between the extrusion roller 6 and the extrusion plate 7, and the gap is the pipeline installation channel.

[0040] The driving mechanism includes a driving motor 24, a synchronous belt 25 and a rotating shaft fixing seat 26. The driving motor 24 is installed in the base 2, a first synchronous wheel is installed at the driving end of the driving motor 24, the rotating shaft fixing seat 26 is installed on the side wall of the support plate 3, a rotating shaft is rotatably installed in the rotating shaft fixing seat 26, a second synchronous wheel is installed in the rotating shaft, the first synchronous wheel is connected to the second synchronous wheel through the synchronous belt 25, and the extrusion roller 6 is installed at the end of the rotating shaft. The rotation of the extrusion roller 6 is realized by the driving action of the driving mechanism.

[0041] A positioning groove is provided above the base 2, and a medical waste recycling bin 17 is inserted into the positioning groove. A fixing hoop 18 is provided on the outer side of the medical waste recycling bin 17, and the fixing hoop 18 is installed on the support plate 3, so as to facilitate the recycling of medical waste generated during the medical care process and facilitate the operation of medical staff. A first placement tray 27 is provided above the medical waste recycling bin 17, and a second placement tray 28 is provided above the first placement tray 27. Both placement trays are used to place medical supplies to improve the practicality of the high-pressure syringe. A U-shaped handle 29 is provided between the two placement trays, and a universal wheel 31 is provided below the base 2 to facilitate the movement of the high-pressure syringe. A power switch 30 is provided on one side of the base 2 to facilitate the switch operation of the high-pressure syringe by medical staff.

[0042] The working principle of the present invention is: first, place the medicine bottle on the medicine bottle fixing seat 4, then insert the injection branch into the medicine bottle, and connect the injection branch with the injection pipeline. At the same time, the injection branch and the injection pipeline are positioned by the positioning seat and the guide seat, and the injection pipeline is installed between the extrusion roller 6 and the extrusion plate 7. During injection, the driver 23 is first started, and the push rod 20 is driven to move through the pull rope and the two-link mechanism to move it out of the pipeline channel, release the injection branch, and make the injection branch conductive. The medicine is transmitted to the injection pipeline and mixed in the injection pipeline. Then the drive motor 24 is started to drive the extrusion roller 6 to rotate. Through the extrusion of the injection pipeline by the extrusion roller 6 and the extrusion plate 7, the injection is squeezed to the injection end of the injection pipeline to realize the delivery of the injection.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A roller-type high-pressure injector, comprising a housing (1) and a base (2); a support plate (3) is mounted on one side of the housing (1), characterized in that: A plurality of medicine bottle fixing seats (4) are mounted above the support plate (3); a switch structure (5) having the same number as the medicine bottle fixing seats (4) is mounted below the medicine bottle fixing seats (4); a squeezing roller (6) is mounted below the switch structure (5); a squeezing plate (7) is slidably mounted on the support plate (3) below the squeezing roller (6); a pipeline installation channel is provided between the squeezing plate (7) and the squeezing roller (6); a locking mechanism for locking the injection pipeline in the pipeline installation channel is provided below the squeezing plate (7); and a positioning protection mechanism for positioning the locking mechanism is provided on the outer side of the locking mechanism; The locking mechanism comprises a handle (8) and a cam (9), wherein the handle (8) is rotatably mounted on the support plate (3), the cam (9) is fixedly mounted on the handle (8), and the cam (9) is connected to the extrusion plate (7); The positioning protection mechanism comprises a protection panel (10) and a plurality of locks (11); one side of the protection panel (10) is hingedly mounted on the support plate (3), and the other side of the protection panel (10) is openably connected to the support plate (3) via the locks (11); the protection panel (10) is located outside the handle (8) and extends to below the medicine bottle fixing seat (4); a limiting groove (34) is provided on one side of the protection panel (10) close to the support plate (3), and the handle (8) is inserted into the limiting groove (34); A positioning plate (12) is provided above the cam (9); the positioning plate (12) is slidably connected to the support plate (3); an end surface of the positioning plate (12) is in contact with the cam (9); and the positioning plate (12) is elastically connected to the extrusion plate (7) via a spring.

2. A roller-type high-pressure injector according to claim 1, characterized in that: A branch pipe positioning seat (13) is provided below the medicine bottle fixing seat (4), and a branch pipe positioning groove is provided in the branch pipe positioning seat (13).

3. A roller-type high-pressure injector according to claim 1, characterized in that: A main pipe positioning seat (14) is provided on the support plate (3) on one side of the extrusion roller (6), and a main pipe positioning groove is provided in the main pipe positioning seat (14); and a main pipe guide groove (15) penetrating the side wall of the support plate (3) is provided on the support plate (3) on the other side of the extrusion roller (6).

4. A roller-type high-pressure injector according to claim 3, characterized in that: A guide seat (16) is installed in the main pipe guide groove (15), and a pressure sensor is installed in the guide seat (16).

5. The roller-type high-pressure injector according to claim 1, characterized in that: A positioning groove is provided above the base (2), a medical waste recycling bin (17) is inserted into the positioning groove, a fixing hoop (18) is provided on the outside of the medical waste recycling bin (17), and the fixing hoop (18) is mounted on the support plate (3).

6. A roller-type high-pressure injector according to claim 1, characterized in that: The switch structure (5) comprises a mounting seat (19), a push rod (20), a positioner (21) and two connecting rod mechanisms (22); the mounting seat (19) is mounted on a side of the support plate (3) close to the housing (1); the push rod (20) is movably inserted in the mounting seat (19); a spring is sleeved on the push rod (20) inserted in the mounting seat (19); the positioner (21) is mounted on the other side of the support plate (3); a pipeline passage is provided between the positioner (21) and the support plate (3); one end of the push rod (20) passes through the support plate (3) and is inserted in the pipeline passage; a driver (23) is mounted in the base (2); the two connecting rod mechanisms (22) are hingedly connected to the mounting seat (19); one end of the two connecting rod mechanisms (22) is movably inserted in the push rod (20); and the other end of the two connecting rod mechanisms (22) is connected to the driver (23).

7. A roller-type high-pressure injector according to claim 1, characterized in that: The extrusion roller (6) comprises a wheel disc and a plurality of extrusion wheels; a driving mechanism is installed in the base (2); the wheel disc is rotatably mounted on the side wall of the support plate (3); the wheel disc is connected to the driving end of the driving mechanism; the plurality of extrusion wheels are rotatably mounted on a side of the wheel disc away from the support plate (3); a positioning pre-pressing wheel is provided between two adjacent extrusion wheels; the positioning pre-pressing wheel is rotatably connected to the wheel disc.

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