A nerve block injection device

Abstract

This invention relates to a nerve block injection device, comprising a cabinet and an ultrasonic testing device disposed inside and above the cabinet. An ultrasonic injection assembly connected to the ultrasonic testing device is disposed on one side of the cabinet. The ultrasonic injection assembly includes an ultrasonic probe II and a telescopic injection module disposed on one side of the ultrasonic probe II. The telescopic injection module can be rotated to adjust its tilt angle to adjust the injection position. A peristaltic pump for delivering liquid to the telescopic injection module is disposed inside the cabinet, and the peristaltic pump is connected to a liquid storage tank fixed inside the cabinet. This invention has the advantage of being easy to operate.

Description

Technical Field

[0001] This invention belongs to the field of medical instrument technology, specifically relating to a nerve block injection device. Background Technology

[0002] Nerve block is achieved by injecting anesthetic drugs around nerve trunks and ganglia to block the transmission of nerve impulses in the area innervated by the nerve, thereby producing an anesthetic and analgesic effect. When administering anesthesia to a patient, medical personnel need to inject the anesthetic drugs into the patient's body using an injection device.

[0003] In existing technologies, when administering nerve block injections, the location of the nerve trunk and ganglion is first confirmed using an ultrasound probe. Then, other personnel administer the injection using a nerve block needle to achieve nerve block. However, since the nerve block needle and the ultrasound probe are separate, when there are insufficient personnel and only one person is needed to operate the procedure, the operation becomes quite cumbersome because ultrasound positioning and injection are required simultaneously. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nerve block injection device that is easy to operate.

[0005] The technical solution of the present invention is as follows:

[0006] A nerve block injection device includes a cabinet and an ultrasonic testing device disposed inside and above the cabinet. An ultrasonic injection assembly connected to the ultrasonic testing device is disposed on one side of the cabinet. The ultrasonic injection assembly includes an ultrasonic probe II and a telescopic injection module disposed on one side of the ultrasonic probe II. The telescopic injection module can be rotated to adjust the tilt angle to adjust the injection position.

[0007] The cabinet is equipped with a peristaltic pump for supplying liquid to the telescopic injection module, and the peristaltic pump is connected to a liquid storage tank fixed inside the cabinet.

[0008] Furthermore, the telescopic injection module includes a fixed plate mounted on the ultrasonic probe II, an adjustment plate hinged to the fixed plate, and a servo motor mounted on the fixed plate. The adjustment plate has a chamber communicating with a peristaltic pump. A piston is slidably connected to the chamber. An injection head is unidirectionally connected to the bottom of the piston, and liquid above the piston can enter the injection head through the piston.

[0009] A telescopic assembly that is driven by a servo motor is provided above the piston;

[0010] The fixing plate is tilted so that the extension line of the end of the injection head away from the piston intersects the vertical extension line of the ultrasonic probe II. One end of the fixing plate is rotatably connected to the adjustment module, and the adjustment module is rotatably connected to the adjustment plate.

[0011] Furthermore, a one-way valve is fixed inside the piston, and the one-way valve is connected to the injection head.

[0012] Furthermore, the telescopic assembly includes a threaded column rotatably connected inside the chamber, a threaded barrel threadedly connected to the threaded column, and a sealing barrel inserted and sealed to the threaded barrel. The threaded column is driven by a servo motor, the threaded barrel is sealed and fixed on the piston, the piston cannot rotate inside the chamber, and the sealing barrel is sealed and fixed inside the chamber.

[0013] Furthermore, the adjustment module includes a rotating column rotatably connected to a fixed plate, a circular cavity opened on the rotating column, a fan wheel rotatably disposed in the circular cavity and sealed in contact with the cavity wall, a threaded rod fixed coaxially with the fan wheel, and an adjustment rod threadedly connected to the threaded rod. The rotating column is rotatably sealed and connected to an inflation assembly. The rotating column is connected to the circular cavity, and the circular cavity is connected to an exhaust port opened on the rotating column. The gas of the inflation assembly enters the circular cavity through the rotating column and is discharged from the exhaust port to drive the fan wheel to rotate.

[0014] The end of the adjusting rod away from the fan wheel is rotatably connected to the adjusting plate.

[0015] Furthermore, a synchronous shaft is coaxially fixed at the end of the fan wheel away from the threaded rod. The synchronous shaft is rotatably sealed and connected to the cavity and extends out of the cavity. An angle sensor for detecting the rotation angle of the synchronous shaft is fixed on the rotating column.

[0016] Furthermore, the inflation assembly includes an air pump, two air storage tanks, and two electrically controlled ball valves. The air pump, air storage tanks, and electrically controlled ball valves are all fixed inside the cabinet, and the air pump and electrically controlled ball valves are all connected to the two air storage tanks. The two electrically controlled ball valves are all connected to a circular cavity.

[0017] Furthermore, the ultrasonic testing equipment includes a main unit installed inside the cabinet, an operation panel installed above the cabinet, and a display screen installed on the operation panel. An ultrasonic probe I and an injection needle are also mounted on the operation panel. The main unit is connected to the ultrasonic probe I and the ultrasonic probe II via a circuit.

[0018] Furthermore, the cabinet also contains electrically controlled valves, which are connected to the liquid storage tank and the chamber located above the piston via pipes.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention uses an ultrasonic probe II for detection, which facilitates the confirmation of the nerve trunk and ganglion location. The tilt angle of the telescopic injection module is adjusted according to the depth of the nerve trunk and ganglion location, thereby ensuring accurate puncture and injection, and the injection operation can be completed by one person.

[0021] 2. This invention achieves the adjustment of the tilt angle of the adjustment plate through the cooperation of the adjustment module and the inflation component, ensuring rapid adjustment. The corresponding fan wheel is only set on the fixed plate, which reduces the weight of the telescopic injection module and makes it easier for personnel to use.

[0022] In summary, the present invention has the advantage of being easy to operate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the ultrasonic injection assembly;

[0025] Figure 3 For the present invention Figure 2 A cross-sectional structural diagram of the telescopic injection module;

[0026] Figure 4 For the present invention Figure 2 Internal structure diagram;

[0027] Figure 5 For the present invention Figure 3 A magnified structural diagram of part A;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the adjustment module structure;

[0029] Figure 7 For the present invention Figure 1 A schematic diagram of the cabinet structure.

[0030] In the diagram, 1. Ultrasonic probe I; 2. Injection needle; 3. Ultrasonic injection assembly; 31. Ultrasonic probe II; 32. Telescopic injection module; 320. Piston; 321. Fixing plate; 322. Servo motor; 323. Sealing barrel; 324. Threaded column; 325. Adjusting plate; 326. Threaded barrel; 327. One-way valve; 328. Injection head; 329. Spring; 33. Adjustment module; 331. Rotating column; 332. Angle sensor; 333. Fan wheel; 334. Threaded rod; 335. Adjusting rod; 336. Conductive slip ring; 337. Hinge column; 4. Display screen; 5. Operation panel; 6. Cabinet; 61. Main unit; 62. Air pump; 63. Liquid storage tank; 64. Peristaltic pump; 65. Electrically controlled valve; 66. Electrically controlled ball valve; 67. Gas storage tank. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, a nerve block injection device includes a cabinet 6 and an ultrasonic testing device disposed inside and above the cabinet 6. An ultrasonic injection assembly 3 connected to the ultrasonic testing device is disposed on one side of the cabinet 6. The ultrasonic injection assembly 3 includes an ultrasonic probe II 31 and a telescopic injection module 32 disposed on one side of the ultrasonic probe II 31. The telescopic injection module 32 can be rotated to adjust the tilt angle to adjust the injection position.

[0033] The cabinet 6 is equipped with a peristaltic pump 64 for delivering liquid to the telescopic injection module 32. The peristaltic pump 64 is connected to a liquid storage tank 63 fixed inside the cabinet 6.

[0034] The ultrasonic testing equipment includes a main unit 61 installed in the cabinet 6, an operation panel 5 installed above the cabinet 6, and a display screen 4 installed on the operation panel 5. An ultrasonic probe I1 and an injection needle 2 are also mounted on the operation panel 5. The main unit 61 is connected to the ultrasonic probe I1 and the ultrasonic probe II 31 via a line.

[0035] It should be noted that the host 61 consists of components such as signal transmitting and receiving circuits, beamformer, digital signal processor and digital scan converter (DSC). Ultrasonic testing equipment is existing technology, so it will not be described in detail.

[0036] When in use, the operator picks up the ultrasound injection assembly 3 and places the ultrasound probe II 31 on the patient's body to detect the location of the nerve trunk and ganglion. After the detection is completed, the operator adjusts the tilt angle of the telescopic injection module 32 according to the location of the nerve trunk and ganglion. Then, after the telescopic injection module 32 is punctured to the corresponding position, the corresponding liquid is injected into the telescopic injection module 32 through the peristaltic pump 64. After the injection is completed, the peristaltic pump 64 stops working, the telescopic injection module 32 is reset, and the injection is completed.

[0037] When the ultrasonic probe II31 is working, the corresponding ultrasonic operations are performed through the display screen 4 and the operation panel 5.

[0038] In this embodiment, the telescopic injection module 32 includes a fixed plate 321 fixed to the ultrasonic probe II 31, an adjustment plate 325 hinged to the fixed plate 321, and a servo motor 322 fixed to the fixed plate 321. The adjustment plate 325 has a chamber that communicates with the peristaltic pump 64. A piston 320 is slidably connected in the chamber. The bottom of the piston 320 is unidirectionally connected to an injection head 328, and the liquid above the piston 320 can enter the injection head 328 through the piston 320.

[0039] A telescopic assembly that is driven by a servo motor 322 is provided above the piston 320;

[0040] The fixing plate 321 is tilted so that the extension line of the end of the injection head 328 away from the piston 320 intersects the vertical extension line of the ultrasonic probe II 31. One end of the fixing plate 321 is rotatably connected to the adjustment module 33, the adjustment module 33 is rotatably connected to the adjustment plate 325, and the other end of the adjustment plate 325 is connected to the spring piece 329 fixed on the fixing plate 321.

[0041] In use, the adjustment module 33 adjusts the tilt angle of the adjustment plate 325. After the adjustment is completed, the servo motor 322 works and drives the telescopic component to work. The telescopic component pushes the injection head 328 to extend. After the injection head 328 reaches the corresponding position, the peristaltic pump 64 starts to work and inputs the corresponding liquid into the chamber, and injects it into the corresponding position through the injection head 328.

[0042] After the injection is completed, the peristaltic pump 64 draws out the liquid in the chamber. Since the piston 320 is unidirectional, it does not draw out the liquid in the injection head 328. Then the servo motor 322 reverses and drives the telescopic component to reset. During the reset process, the liquid in the chamber is gradually drawn out until it is completely reset.

[0043] In this embodiment, a one-way valve 327 is fixed inside the piston 320, and the one-way valve 327 is connected to the injection head 328.

[0044] In this embodiment, the telescopic assembly includes a threaded post 324 rotatably connected to the interior of the cavity, a threaded barrel 326 threadedly connected to the threaded post 324, and a sealing barrel 323 inserted and sealed to the threaded barrel 326. The threaded post 324 is driven by a servo motor 322. The threaded barrel 326 is sealed and fixed on the piston 320, and the piston 320 cannot rotate within the cavity. The sealing barrel 323 is sealed and fixed within the cavity.

[0045] In use, the servo motor 322 drives the threaded column 324 to rotate. The threaded column 324 and the threaded barrel 326 work together to drive the piston 320 to move downward. During the downward movement of the piston 320, the sealing barrel 323 and the threaded barrel 326 are inserted and sealed to ensure the cleanliness of the hydraulic fluid. When a reset is required, the servo motor 322 is controlled to reverse.

[0046] In this embodiment, the adjustment module 33 includes a rotating column 331 rotatably connected to the fixed plate 321 via a hinge column 337, a circular cavity opened on the rotating column 331, a fan wheel 333 rotatably disposed in the circular cavity and sealed in contact with the cavity wall, a threaded rod 334 coaxially fixed with the fan wheel 333, and an adjustment rod 335 threadedly connected to the threaded rod 334. The rotating column 331 is rotatably sealed and connected to an inflation assembly. The rotating column 331 is connected to the circular cavity, and the circular cavity is connected to an exhaust port opened on the rotating column 331. The gas of the inflation assembly enters the circular cavity through the rotating column 331 and is discharged from the exhaust port to drive the fan wheel 333 to rotate.

[0047] The end of the adjusting rod 335 away from the fan wheel 333 is rotatably connected to the adjusting plate 325;

[0048] When in use, the inflation component supplies air into the cavity and drives the fan wheel 333 to rotate. The rotation of the fan wheel 333 drives the threaded rod 334 to rotate, and with the cooperation of the threaded rod 334 and the adjusting rod 335, it pushes the adjusting plate 325 to adjust the tilt angle. When reverse adjustment is required, the inflation component is controlled to extract air.

[0049] In this embodiment, a synchronous shaft is coaxially fixed at the end of the fan wheel 333 away from the threaded rod 334. The synchronous shaft is rotatably sealed and connected to the cavity and extends out of the cavity. An angle sensor 332 for detecting the rotation angle of the synchronous shaft is fixed on the rotating column 331. The angle sensor 332 is electrically connected to the industrial control panel through a conductive slip ring 336. The industrial control panel is connected to an electric ball valve, an air pump 62, a peristaltic pump 64, and an electrically controlled valve 65 through cables.

[0050] During use, the rotation angle of the fan wheel 333 is detected by the angle sensor 332, which makes it easy to determine the extension length based on the rotation angle and ensures precise control.

[0051] In this embodiment, the inflation assembly includes an air pump 62, two air storage tanks 67, and two electrically controlled ball valves 66. The air pump 62, air storage tanks 67, and electrically controlled ball valves 66 are all fixed inside the cabinet 6, and the air pump 62 and electrically controlled ball valves 66 are connected to the two air storage tanks 67, and the two electrically controlled ball valves 66 are connected to the circular cavity.

[0052] When in use, the air pump 62 works and draws air from one air storage tank 67 and delivers it to another air storage tank 67, thus forming a negative pressure tank and a high pressure tank. When it is necessary to control the forward and reverse rotation of the fan wheel 333, it is only necessary to adjust the corresponding electric ball valve 66 to open, thereby realizing the forward and reverse rotation control of the fan wheel 333.

[0053] It should be noted that the gas storage tank 67 is connected to an overflow valve and a negative pressure gas replenishment valve. When the negative pressure exceeds the rated value or the high pressure exceeds the upper limit, gas will be automatically discharged and replenished.

[0054] In this embodiment, the cabinet 6 also contains an electrically controlled valve 65, which is connected to the liquid storage tank 63 and the chamber located above the piston 320 via pipes.

[0055] When the piston 320 moves down and drives the injection head 328 down, the electronically controlled valve 65 opens, allowing the liquid in the reservoir 63 to enter the chamber above the piston 320 as the piston 320 moves. Then, when the piston 320 moves down, the electronically controlled valve 65 is closed.

[0056] By setting the electrically controlled valve 65, liquid can be drawn into the chamber during the displacement of the piston 320, and injection can be performed directly when the peristaltic pump 64 is working.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nerve block injection device, comprising a cabinet and an ultrasonic testing device disposed inside and above the cabinet, characterized in that: An ultrasonic injection assembly connected to an ultrasonic testing device is provided on one side of the cabinet. The ultrasonic injection assembly includes an ultrasonic probe II and a telescopic injection module located on one side of the ultrasonic probe II. The telescopic injection module can be rotated to adjust the tilt angle in order to adjust the injection position. The cabinet is equipped with a peristaltic pump for delivering liquid to the telescopic injection module, and the peristaltic pump is connected to a liquid storage tank fixed inside the cabinet. The telescopic injection module includes a fixed plate mounted on the ultrasonic probe II, an adjustment plate hinged to the fixed plate, and a servo motor mounted on the fixed plate. The adjustment plate has a chamber connected to a peristaltic pump. A piston is slidably connected to the chamber. An injection head is unidirectionally connected to the bottom of the piston, and liquid above the piston can enter the injection head through the piston. A telescopic assembly that is driven by a servo motor is provided above the piston; The fixing plate is tilted so that the extension line of the end of the injection head away from the piston intersects the vertical extension line of the ultrasonic probe II. One end of the fixing plate is rotatably connected to the adjustment module, and the adjustment module is rotatably connected to the adjustment plate. The adjustment module includes a rotating column rotatably connected to a fixed plate, a circular cavity opened on the rotating column, a fan wheel rotatably disposed in the circular cavity and sealed to the cavity wall, a threaded rod fixed coaxially with the fan wheel, and an adjustment rod threadedly connected to the threaded rod. The rotating column is rotatably sealed and connected to an inflation assembly. The rotating column is connected to the circular cavity, and the circular cavity is connected to an exhaust port opened on the rotating column. The gas of the inflation assembly enters the circular cavity through the rotating column and is discharged from the exhaust port to drive the fan wheel to rotate. The end of the adjusting rod away from the fan wheel is rotatably connected to the adjusting plate.

2. The nerve block injection device according to claim 1, characterized in that: A one-way valve is fixed inside the piston, and the one-way valve is connected to the injection head.

3. The nerve block injection device according to claim 1, characterized in that: The telescopic assembly includes a threaded column rotatably connected inside the chamber, a threaded barrel threadedly connected to the threaded column, and a sealing barrel inserted and sealed to the threaded barrel. The threaded column is driven by a servo motor, the threaded barrel is sealed and fixed to the piston, the piston cannot rotate inside the chamber, and the sealing barrel is sealed and fixed inside the chamber.

4. The nerve block injection device according to claim 1, characterized in that: The fan wheel is coaxially fixed to one end away from the threaded rod. The synchronous shaft is rotatably sealed and connected to the cavity and extends out of the cavity. The rotating column is fixed with an angle sensor for detecting the rotation angle of the synchronous shaft.

5. A nerve block injection device according to claim 4, characterized in that: The inflation assembly includes an air pump, two air storage tanks, and two electrically controlled ball valves. The air pump, air storage tanks, and electrically controlled ball valves are all fixed inside the cabinet, and the air pump and electrically controlled ball valves are connected to the two air storage tanks. The two electrically controlled ball valves are connected to a circular cavity.

6. A nerve block injection device according to claim 5, characterized in that: The ultrasonic testing equipment includes a main unit housed in a cabinet, an operation panel located above the cabinet, and a display screen on the operation panel. An ultrasonic probe I and an injection needle are also mounted on the operation panel. The main unit is connected to the ultrasonic probe I and the ultrasonic probe II via a circuit.

7. The nerve block injection device according to claim 1, characterized in that: The cabinet also contains electrically controlled valves, which are connected to the liquid storage tank and the chamber located above the piston via pipes.

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