Injection pump for ultrasonic guided injection

Abstract

The invention discloses an injection pump for ultrasonic guided injection, and belongs to the technical field of injection equipment. Comprising a pump shell, a wireless controller charging groove is formed in the outer side wall of the pump shell, a wireless controller is wirelessly connected to the outer side of the pump shell, a stepping motor is fixedly connected to the bottom end of the interior of the pump shell, a lead screw is fixedly connected to the output end of the stepping motor, and a lead screw sleeve is in threaded connection to the outer side wall of the lead screw; a clamping groove is fixedly connected to the upper surface of the pump shell, an injector needle cylinder, a parameter setting knob, a parameter setting button and a display screen are connected into the clamping groove in a clamped mode, a visual and accurate parameter regulation and control system is constructed, and refinement and individuation of injection treatment are achieved. In clinical operation, different injection positions, treatment purposes and individual differences of patients have different requirements on injection speed and dosage. For example, joint cavity injection needs slow pushing injection so as to avoid damage to joints due to too high intracavitary pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical injection equipment, in particular to an injection pump for ultrasound-guided injection. BACKGROUND

[0002] In the ultrasound-guided injection medical scene, the current injection operation mainly depends on the operator or the assistant to complete the liquid suction and injection by pushing the syringe piston. However, the manual operation has obvious limitations: first, it needs 1-2 assistants to cooperate, which increases the consumption of human resources; second, the operator needs to observe the needle tip position in the ultrasound screen and the injection or suction amount of the syringe at the same time, which needs to frequently change the field of view, affecting the operation efficiency and safety. At the same time, although some existing injection equipment has certain automatic functions, there are still some deficiencies in the structure and function design: first, the pressure monitoring and alarm system of the existing injection equipment is not perfect, which only gives a simple qualitative prompt of high pressure through the alarm sound, and cannot feedback the dynamic changes of the injection or suction pressure in real time. The injection or suction pressure change is one of the key basis for the operator to judge whether the needle tip is located in which tissue and whether the position is correct; second, the injection amount of the existing injection equipment can only be displayed on the equipment screen, but the operator needs to closely observe the ultrasound screen during injection, and cannot observe the screen of the injection equipment at the same time, that is, the existing injection equipment cannot feedback the injection amount to the operator in an effective way; third, most of the existing injection equipment does not have the function of liquid suction, and the liquid suction before injection is a necessary step to avoid serious complications caused by injecting drugs into blood vessels. Therefore, the existing injection equipment cannot meet the needs of the ultrasound-guided injection medical scene.

[0003] Therefore, there is an urgent need for an injection equipment with real-time feedback function of injection / suction dynamic pressure change and real-time feedback function of injection amount hearing, which can be controlled by the operator and does not break the sterile state of the treatment area, to solve the above problems of the existing technology in the ultrasound-guided injection scene. SUMMARY

[0004] The purpose of the present application is to solve the problem that the traditional injection equipment cannot be applied to the ultrasound-guided injection scene because it does not have the real-time feedback function of injection / suction dynamic pressure change and the real-time feedback function of injection amount hearing, and can be controlled by the operator and does not break the sterile state of the treatment area, to reduce the consumption of human resources in ultrasound-guided injection, and improve the work efficiency and safety.

[0005] Technical solution: a kind of injection pump for ultrasound-guided injection, the outer side wall of the pump shell is provided with wireless controller charging slot, the inside of the wireless controller charging slot is engaged with wireless controller, the inside of the pump shell is fixedly connected with step motor, the output end of the step motor is fixedly connected with screw rod, the outer side wall of the screw rod is threadedly connected with screw rod sleeve, the upper surface of the pump shell is fixedly connected with clamping groove, the inside of the clamping groove is engaged with syringe barrel, the inside of the syringe barrel is slidably connected with syringe piston, the upper surface of the syringe piston is fixedly connected with syringe piston rod, the top of the syringe piston rod is fixedly connected with piston rod push piece, the upper surface of the pump shell, located at the rear of the piston rod push piece is provided with push-pull head, the front surface of the push-pull head is symmetrically provided with piston rod push piece clamp, the center of the push-pull head is elastically connected with injection pressure sensor, the outer side wall of the piston rod push piece clamp is elastically connected with liquid suction pressure sensor, the upper surface of the clamping groove is engaged with pressing block.

[0006] Further, the inside upper surface of the pump shell is fixedly connected with protective shell, the upper surface of the pump shell, located below the push-pull head is provided with sliding groove, the lower surface of the push-pull head is fixedly connected with vertical block, the vertical block is fixedly connected with the screw rod sleeve.

[0007] Further, the outer side wall of the pump shell is provided with sound outlet groove, the rear surface of the inside of the pump shell is fixedly connected with circuit board, the inside of the pump shell, located in front of the sound outlet groove is fixedly connected with loudspeaker, the rear surface of the circuit board is fixedly connected with sound controller, the sound controller and the loudspeaker are connected by wire signal.

[0008] Further, the upper surface of the pump shell is rotatably connected with injection parameter setting knob, the upper surface of the pump shell, located on one side of the injection parameter setting knob is rotatably connected with liquid suction parameter setting knob.

[0009] Further, the lower surface of the upper surface of the pump shell is fixedly connected with display screen, the right side of the display screen is fixedly connected with parameter setting button.

[0010] Further, the injection pressure sensor and the liquid suction pressure sensor are connected by electric signal with the circuit board, and are connected by the circuit board with the sound controller and the loudspeaker.

[0011] Further, the surface of the wireless controller is fixedly connected with injection button and liquid suction button, the outer side wall of the wireless controller is engaged with replaceable bracelet, the wireless controller and the wireless controller charging slot are connected by electricity.

[0012] Further, the left side of the outer side wall of the pump shell is fixedly connected with a pressure display prompting component charging groove, the inside of the pressure display prompting component charging groove is clamped and connected with a pressure display prompting component, and the pressure display prompting component charging groove is in contact with the pressure display prompting component.

[0013] Beneficial effects: The device integrates a wireless controller, an injection parameter setting knob, a suction parameter setting knob, a parameter setting button and a display screen, constructs an intuitive and accurate parameter control system, and realizes fine and personalized injection treatment. In clinical operation, different injection sites, treatment purposes and patient individual differences require different injection speed and dose. For example, joint cavity injection needs slow injection to avoid damage to the joint due to high intracavity pressure, and intramuscular injection of viscous drugs may need to increase the pushing force appropriately. The doctor can accurately preset the injection / suction speed, pressure upper limit and other parameters through the knob, the parameter setting button is responsible for mode switching and confirmation, and all set parameters and real-time operation data are clearly presented on the display screen. This function not only ensures that the drug is accurately delivered to the target position and the dose is accurate, maximizes the treatment effect, and avoids tissue damage, drug reflux and other problems caused by manual operation, simplifies the operation process, reduces the burden on the doctor, is especially suitable for long and complex operations, reduces fatigue and human error, and provides convenience for teaching and operation standardization.

[0014] The device cooperates with the injection pressure sensor, the suction pressure sensor, the pressure display prompting component, the sound controller and the loudspeaker to establish a comprehensive pressure monitoring and multi-modal early warning mechanism, which significantly improves the operation safety. During injection, the needle tip resistance is the key to determine whether the position is correct and whether the tissue reaction is normal. Blind injection may cause serious consequences such as needle tip piercing blood vessels and nerves, and improper drug injection into the gap. The pressure sensor collects pressure data during injection and suction in real time, converts it into an electrical signal and transmits it to the circuit board, which analyzes and processes it and compares it with the preset threshold value, and sends an alarm through two ways: visually, the pressure display prompting component system uses green, yellow and red three-color LED lights to indicate the pressure level, green light indicates normal resistance, yellow light indicates soft tissue resistance, and red light warns that hard tissue or overfull cavity is encountered, and operation should be stopped immediately; audibly, the circuit board sends a signal to the sound controller to control the loudspeaker to emit a prompt sound of different pitch or frequency, and a high-pitch alarm is triggered when the red light is on. This double early warning mechanism can feedback pressure abnormalities in the first time, effectively avoid iatrogenic injury, assist in judging the position of the needle tip, reduce the operation threshold and psychological pressure, and provide reliable and safe protection for the operator. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the cross-sectional structure of the present application; Figure 3 is the cross-sectional structure schematic diagram of the protective shell of the present application; Figure 4 is the overall structure schematic diagram of the wireless bracelet of the present application; Figure 5 is the cross-sectional structure schematic diagram of the syringe of the present application; Figure 6 is the overall structure schematic diagram of the briquet of the present application; Figure 7 is the overall structure schematic diagram of the push-pull head of the present application; Figure 8 is the overall structure schematic diagram of the pressure display prompting assembly of the present application.

[0016] In the figure: 1, pump shell; 2, stepper motor; 3, screw rod; 4, screw rod sleeve; 5, clamping groove; 6, syringe barrel; 7, syringe piston; 8, syringe piston rod; 9, push-pull head; 10, protective shell; 11, sliding groove; 12, vertical block; 13, pressure display prompting assembly; 14, sound outlet groove; 15, circuit board; 16, loudspeaker; 17, sound controller; 18, injection parameter setting knob; 19, liquid extraction parameter setting knob; 20, display screen; 21, parameter setting button; 22, briquet; 23, injection pressure sensor; 24, wireless controller charging groove; 25, wireless controller; 27, liquid extraction pressure sensor; 29, piston rod push piece; 30, piston rod push piece clamp; 31, injection button; 32, liquid extraction button; 33, replaceable bracelet; 34, pressure display prompting assembly charging groove. DETAILED DESCRIPTION

[0017] In order to make the technical scheme of the present application clearer, the present application is further described in detail below in combination with the drawings and specific embodiments.

[0018] EMBODIMENT As Figures 1-7As shown, an injection pump for ultrasound-guided injection, comprising a pump shell 1, a wireless controller charging groove 24 is opened on the outer side wall of the pump shell 1, a wireless controller 25 is clamped and connected inside the wireless controller charging groove 24, a stepping motor 2 is fixedly connected inside the pump shell 1, the output end of the stepping motor 2 is fixedly connected with a lead screw 3, the outer side wall of the lead screw 3 is threadedly connected with a lead screw sleeve 4, the upper surface of the pump shell 1 is fixedly connected with a clamping groove 5, the inside of the clamping groove 5 is clamped and connected with a syringe barrel 6, the inside of the syringe barrel 6 is slidingly connected with a syringe piston 7, the upper surface of the syringe piston 7 is fixedly connected with a syringe piston rod 8, the top end of the syringe piston rod 8 is fixedly connected with a piston rod push piece 29, the upper surface of the pump shell 1, located behind the piston rod push piece 29, is provided with a push-pull head 9, the front surface of the push-pull head is symmetrically provided with a piston rod push piece clamp 30, the center of the push-pull head 9 is elastically connected with an injection pressure sensor 23, the outer side wall of the piston rod push piece clamp 30 is elastically connected with a liquid suction pressure sensor 27, the upper surface of the clamping groove 5 is clamped and connected with a pressing block 22, the inside upper surface of the pump shell 1 is fixedly connected with a protective shell 10, the upper surface of the pump shell 1, located below the push-pull head 9, is provided with a sliding groove 11, the lower surface of the push-pull head 9 is fixedly connected with a vertical block 12, the vertical block 12 is fixedly connected with the lead screw sleeve 4, the surface of the wireless controller 25 is fixedly connected with an injection button 31 and a liquid suction button 32, the outer side wall of the wireless controller 25 is clamped and connected with a replaceable bracelet 33; The whole device is controlled by wireless controller 25, and the stepper motor 2 is used to drive the lead screw 3 to realize the precise injection and suction of the syringe. In the preparation stage, the syringe barrel 6 is clamped into the clamping groove 5 on the upper surface of the pump shell 1, and then the pressing block 22 is clamped on the upper surface of the clamping groove 5 to fix the syringe barrel and avoid displacement. The syringe piston 7 is placed in the syringe barrel 6, and the top of the syringe piston rod 8 is fixed with the piston rod push piece 29. The piston rod push piece clamp 30 on the front surface of the push-pull head 9 is used to clamp the piston rod push piece 29, so that the push-pull head and the piston rod are firmly connected. At the same time, the wireless controller 25 is connected with the control module in the pump shell 1 through wireless signal. When the power is insufficient, it can be charged in the wireless controller charging slot 24 on the outer wall of the pump shell. The replaceable bracelet 33 clamped on the outer wall of the wireless controller can also be replaced according to the needs, which is convenient for operation. When injecting, the user presses the injection button 31 on the surface of the wireless controller 25 to send instructions, and the stepper motor 2 at the bottom of the pump shell 1 is started. The output end drives the lead screw 3 to rotate clockwise, and through the threaded connection, the lead screw sleeve 4 moves linearly upward along the lead screw axis. The lead screw sleeve 4 drives the push-pull head 9 to slide upward along the sliding groove 11 on the upper surface of the pump shell through the vertical block 12. The push-pull head pulls the piston rod push piece 29 through the piston rod push piece clamp 30, and then drives the syringe piston rod 8 and the syringe piston 7 to move upward, pushing out the liquid in the syringe barrel 6. The injection pressure sensor 23 in the center of the push-pull head 9 monitors the pressure in real time, and the stepper motor 2 will stop working when the pressure exceeds the standard. When suctioning, the user presses the suction button 32 on the surface of the wireless controller 25 to send instructions, and the stepper motor 2 is started in reverse direction to drive the lead screw 3 to rotate counterclockwise, so that the lead screw sleeve 4 moves downward. Through the vertical block 12, the push-pull head 9 slides downward along the sliding groove 11. The push-pull head pushes the piston rod push piece 29 through the piston rod push piece clamp 30, drives the syringe piston rod 8 and the syringe piston 7 to move downward, and sucks the external liquid. The suction pressure sensor 27 monitors the suction pressure in real time, and triggers the alarm or stops working when the pressure is abnormal. The protective shell 10 on the upper surface in the pump shell 1 protects the internal transmission components from dust and collision, prolongs the service life of the equipment, and the whole process is convenient and safe with wireless control and pressure monitoring.

[0019] In this embodiment, the outer side wall of the pump shell 1 is provided with a sound outlet groove 14, the inner rear surface of the pump shell 1 is fixedly connected with a circuit board 15, the inside of the pump shell 1, located in front of the sound outlet groove 14, is fixedly connected with a loudspeaker 16, the rear surface of the circuit board 15 is fixedly connected with a sound controller 17, the sound controller 17 is signal connected with the loudspeaker 16 through wires, the upper surface of the pump shell 1 is rotatably connected with an injection parameter setting knob 18, the upper surface of the pump shell 1, located on one side of the injection parameter setting knob 18, is rotatably connected with a pumping parameter setting knob 19, the lower surface of the upper surface of the pump shell 1 is fixedly connected with a display screen 20, the right side of the display screen 20 is fixedly connected with a parameter setting button 21, the injection pressure sensor 23 and the pumping pressure sensor 27 are signal connected with the circuit board 15 through electric signals, and are signal connected with the sound controller 17 and the loudspeaker 16 through the circuit board 15, the left side of the outer side wall of the pump shell 1 is fixedly connected with a pressure display prompt assembly charging groove 34, the inside of the pressure display prompt assembly charging groove 34 is clampedly connected with a pressure display prompt assembly 13, and the pressure display prompt assembly charging groove 34 is electrically connected with the pressure display prompt assembly 13.

[0020] After the preparation stage is completed, the user can adjust the speed, pressure upper limit and other parameters of injection and pumping through the injection parameter setting knob 18 and the pumping parameter setting knob 19 on the upper surface of the pump shell 1, the parameter setting button 21 is used for switching the setting mode or confirming the input, and the setting result is displayed on the display screen 20 in real time. The pressure display prompt assembly 13 of the display screen 20 is linked with the injection pressure sensor 23 and the pumping pressure sensor 27, during injection, the injection pressure sensor 23 transmits the monitored pressure signal to the circuit board 15, after analysis of the circuit board 15, the pressure level is directly presented by the LED lamp of the pressure display prompt assembly 13: the green light indicates that there is no additional resistance except fluid resistance, which is suitable for joint cavities, bursa and other parts; the yellow light prompts the resistance in soft tissues, such as muscle, fat, potential space between deep fascia and muscle; the red 3 light warns that larger resistance such as ligament, tendon, fascia, periosteum, full joint cavity is encountered. At the same time, the circuit board 15 transmits the pressure signal to the sound controller 17, the sound controller 17 controls the loudspeaker 16 to emit different frequency or tone prompt sound according to the pressure level through wires, the sound is transmitted out through the sound outlet groove 14, such as mute or low tone when the green light is on, medium tone prompt when the yellow light is on, and high tone alarm when the red light is on. During pumping, the pumping pressure sensor 27 monitors the pressure, and when the pressure is abnormal, the pressure display prompt assembly 13 is also displayed and the loudspeaker 16 is triggered to alarm, realizing double pressure prompt, improving operation safety and precision, the pressure display prompt assembly 13 is wirelessly connected with the pump body 1, is in contact charging, and can be moved, for example, can be installed on the side of the display screen of a color Doppler ultrasound machine, and the operator can see the pressure display prompt assembly 13 while closely watching the display screen of the color Doppler ultrasound machine.

[0021] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An injection pump for ultrasound-guided injection, comprising a pump housing (1), characterized in that: The outer wall of the pump housing (1) is provided with a wireless controller charging slot (24), and a wireless controller (25) is engaged inside the wireless controller charging slot (24). A stepper motor (2) is fixedly connected to the bottom of the pump housing (1), and a lead screw (3) is fixedly connected to the output end of the stepper motor (2). A lead screw sleeve (4) is threaded onto the outer wall of the lead screw (3). A slot (5) is fixedly connected to the upper surface of the pump housing (1), and a syringe barrel (6) is engaged inside the slot (5). A syringe piston (7) is slidably connected inside the syringe barrel (6). The upper surface of the syringe piston (7) is fixedly connected to the syringe piston rod (8), and the top end of the syringe piston rod (8) is fixedly connected to the piston rod push plate (29). The upper surface of the pump housing (1) is provided with a push-pull head (9) located behind the piston rod push plate (29). The front surface of the push-pull head is symmetrically provided with piston rod push plate clamps (30). The center of the push-pull head (9) is elastically connected to an injection pressure sensor (23). The outer side walls of the piston rod push plate clamps (30) are elastically connected to a liquid suction pressure sensor (27). The upper surface of the slot (5) is engaged with a pressure block (22).

2. The infusion pump for ultrasound-guided injection according to claim 1, characterized in that: A protective shell (10) is fixedly connected to the upper inner surface of the pump housing (1). A sliding groove (11) is provided on the upper surface of the pump housing (1) below the push-pull head (9). A vertical block (12) is fixedly connected to the lower surface of the push-pull head (9). The vertical block (12) is fixedly connected to the lead screw sleeve (4).

3. The infusion pump for ultrasound-guided injection according to claim 1, characterized in that: The outer wall of the pump housing (1) is provided with a sound outlet groove (14). A circuit board (15) is fixedly connected to the inner rear surface of the pump housing (1). Inside the pump housing (1), a speaker (16) is fixedly connected in front of the sound outlet groove (14). A sound controller (17) is fixedly connected to the rear surface of the circuit board (15). The sound controller (17) and the speaker (16) are connected by a wire signal connection.

4. An infusion pump for ultrasound-guided injection according to claim 1, characterized in that: The upper surface of the pump housing (1) is rotatably connected to an injection parameter setting knob (18), and the upper surface of the pump housing (1) is rotatably connected to a liquid extraction parameter setting knob (19) on one side of the injection parameter setting knob (18).

5. An infusion pump for ultrasound-guided injection according to claim 1, characterized in that: A display screen (20) is fixedly connected to the lower part of the upper surface of the pump casing (1), and a parameter setting button (21) is fixedly connected to the right side of the display screen (20).

6. An infusion pump for ultrasound-guided injection according to claim 1, characterized in that: The injection pressure sensor (23) and the aspiration pressure sensor (27) are connected to the circuit board (15) via electrical signals, and are also connected to the sound controller (17) and the speaker (16) via the circuit board (15).

7. An infusion pump for ultrasound-guided injection according to claim 1, characterized in that: The surface of the wireless controller (25) is fixedly connected to an injection button (31) and a liquid aspiration button (32). A replaceable wristband (33) is snapped onto the outer wall of the wireless controller (25). The wireless controller (25) is electrically connected to the wireless controller charging slot (24).

8. An infusion pump for ultrasound-guided injection according to claim 1, characterized in that: A pressure display and prompting component charging slot (34) is fixedly connected to the left side of the outer wall of the pump housing (1). A pressure display and prompting component (13) is engaged inside the pressure display and prompting component charging slot (34). The pressure display and prompting component charging slot (34) is electrically connected to the pressure display and prompting component (13).

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