Ultrasound nerve block puncture injection device

Abstract

The present invention discloses an ultrasonic nerve block puncture injection device, including an infusion pump and an injection handle, wherein a handle embedding groove is provided on one side of the infusion pump, the injection handle is snap-connected to the inner side of the handle embedding groove, a syringe mounting groove is provided on the lower end of one side of the infusion pump, a syringe medicine tube is snap-connected to the inner side of the syringe mounting groove, and a push rod is slidably connected to the inner side of the syringe mounting groove. The present invention, by providing an injection handle, allows an anesthesiologist to hold an ultrasonic probe in one hand and an injection handle equipped with a puncture needle body in the other hand, so as to accurately complete the puncture and injection of nerve block. On the other hand, the use of a photoelectric sensor light emitter and a photoelectric sensor receiver in the injection handle can accurately and timely feedback whether there is blood in the back-absorption process to the anesthesiologist who is operating, so that one person can complete the ultrasonic nerve block puncture and injection.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an ultrasonic nerve block puncture injection device. Background Art

[0002] In recent years, with the widespread application of ultrasound technology in clinical anesthesia, visual operations have been realized for brachial plexus block, femoral nerve block, transverse abdominal fascia block and paravertebral block. During the nerve block, the anesthesiologist must concentrate on observing the movement of the puncture needle under ultrasound, and on the other hand, he must direct the assistant to assist the anesthesiologist in administering local anesthetics. When the anesthesia assistant withdraws the syringe, the anesthesiologist must also observe whether there is blood sucked back from the tail of the puncture needle to identify whether the anesthesia puncture needle has mistakenly entered the blood vessel. During the operation, two people are generally required to operate, which is very inconvenient and requires extremely high cooperation. Therefore, an ultrasonic nerve block puncture injection device is proposed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an ultrasonic nerve block puncture injection device to solve the problem raised in the above background technology that the operation generally requires two people, the operation is very inconvenient, and the cooperation requirements are extremely high.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic nerve block puncture injection device, comprising an infusion pump and an injection handle, wherein a handle embedding groove is provided on one side of the infusion pump, and the injection handle is snap-connected to the inner side of the handle embedding groove, and a syringe mounting groove is provided on the lower end of one side of the infusion pump, and a syringe medicine tube is snap-connected to the inner side of the syringe mounting groove, and a push rod is slidably connected to the inner side of the syringe mounting groove, and a syringe push piece is snap-connected to the inner side of the push rod, and the other end of the syringe medicine tube is fixedly connected to an injection head, and the other end of the injection head is threadedly connected to a hose, and the other end of the hose is fixedly connected to a transparent tube neck through a joint, and the other end of the transparent tube neck is fixedly connected to a puncture needle tail, and the puncture needle tail is located at one end of the puncture needle body;

[0005] A tail wing limiting groove is provided on the inner side of the injection handle corresponding to the tail wing of the puncture needle, a photoelectric sensor light emitter and a photoelectric sensor receiver are respectively provided at the upper and lower ends of the inner side of the puncture needle body, the photoelectric sensor light emitter and the photoelectric sensor receiver are located on the outside of the transparent tube neck, and limit blocks are symmetrically provided on the inner side of the injection handle, the joint is connected to the inner side of the injection handle through the limit blocks, a limit switch is provided on the outer side of the injection handle corresponding to the limit blocks, a buzzer alarm is provided on the top of the injection handle, a first control chip and a first Bluetooth module are provided inside the injection handle, the buzzer alarm is electrically connected to the first control chip, and a second control chip and a second Bluetooth module are provided inside the infusion pump.

[0006] Preferably, a display screen and control buttons are provided on the outside of the infusion pump, and the display screen and control buttons are electrically connected to the second control chip.

[0007] Preferably, a second slide plate is slidably connected to the bottom of the syringe barrel on the inner side of the syringe mounting groove, and one end of the second slide plate located on the inner side of the syringe mounting groove is fixedly connected to a connecting shaft, and a stopper is rotatably connected to the outer side of the connecting shaft, and a torsion spring is arranged between the stopper and the second slide plate, and the two ends of the torsion spring are respectively fixedly connected to the second slide plate and the stopper.

[0008] Preferably, a limit rod is fixedly connected to the outer side of the second slide plate, and the limit rod is located on the outer side of the block. One end of the second slide plate located inside the infusion pump is fixedly connected to a second electric push rod, and the second electric push rod is fixedly connected to the inside of the infusion pump. The second electric push rod is electrically connected to the second control chip.

[0009] Preferably, it also includes a puncture depth monitoring module, which is communicatively connected to the second control chip;

[0010] The puncture depth monitoring module comprises:

[0011] Information collection unit, used for:

[0012] Before performing the puncture injection, a first ultrasonic signal is acquired based on an ultrasonic probe held by a medical staff to confirm the collection position of the first ultrasonic signal;

[0013] Based on the human body part corresponding to the acquisition position, obtaining a standard ultrasonic signal corresponding to the human body part, comparing the first ultrasonic signal with the standard ultrasonic signal to obtain a first signal difference, and determining the lesion position according to the first signal difference;

[0014] Based on the lesion location, determining a preset puncture depth of the puncture needle body;

[0015] The first monitoring unit is used for:

[0016] After the puncture injection begins, a second ultrasonic signal of the ultrasonic probe held by the medical staff is obtained in real time;

[0017] Comparing the first ultrasonic signal with the second ultrasonic signal to obtain a second signal difference, and determining the signal influence of the puncture needle body on the ultrasonic signal based on the second signal difference;

[0018] Identify units for:

[0019] Acquire a current ultrasonic signal, determine the needle tip position of the puncture needle body based on the signal influence, and determine a first distance between the needle tip position and the lesion position according to the waveform change of the current ultrasonic wave;

[0020] Acquiring the current puncture depth of the puncture needle body, and calculating the initial lesion depth based on the current puncture depth and the first distance;

[0021] The second monitoring unit is used for:

[0022] When the initial lesion depth is consistent with the preset puncture depth and the puncture depth of the puncture needle body is monitored to be equal to the preset puncture depth, an injection instruction is sent to the second control chip;

[0023] When the initial lesion depth is inconsistent with the preset puncture depth, acquiring historical ultrasonic signals, filtering the historical ultrasonic signals according to the signal influences, and obtaining a clean ultrasonic signal;

[0024] The net ultrasonic signal is aligned with the waveform diagram, and the waveform mutation position is determined according to the alignment result; the actual lesion depth is determined according to the waveform mutation position and the ultrasonic detection characteristics, and when it is monitored that the puncture depth of the puncture needle body is equal to the actual lesion depth, an injection instruction is sent to the second control chip.

[0025] Preferably, a charging port is provided on one side of the infusion pump, located on the inner side of the handle embedding groove, a connection port is fixedly connected to the outer side of the injection handle corresponding to the charging port, a power indicator light is provided on the outer side of the injection handle, and a battery is provided inside the injection handle, the connection port and the power indicator light are both electrically connected to the battery, and the battery is electrically connected to the first control chip.

[0026] Preferably, a start button and a pause button are arranged on the outside of the injection handle, and the start button and the pause button are both electrically connected to the first control chip;

[0027] The side of the limit blocks away from each other is fixedly connected with a pin, the outer side of the pin is slidably connected with a fixing piece, the fixing piece is fixedly connected to the inner side of the injection handle, the inner side of the pin is provided with a plug hole, the inner side of the plug hole is slidably connected with a wedge strip at the bottom of the fixing piece, the outer side of the pin is provided with a first spring between the limit block and the fixing piece, and one end of the wedge strip located on the outer side of the injection handle is fixedly connected to the limit switch;

[0028] Preferably, one end of the wedge-shaped bar located outside the injection handle is snap-connected with a clamping block, the clamping block is located outside the wedge-shaped bar, and the outer sides of the upper and lower clamping blocks are fixedly connected with connecting rods.

[0029] Preferably, a pop-up pin is slidably connected to one side of the injection handle, one end of the pop-up pin located inside the injection handle is fixedly connected to a second spring, and the other end of the second spring is fixedly connected to the inner side of the injection handle.

[0030] Preferably, a first electric push rod is fixedly connected inside the infusion pump, a first slide plate is fixedly connected to the output end of the first electric push rod, the first slide plate is fixedly connected to the push rod, a slide groove is provided on the inner side of the syringe mounting groove corresponding to the push rod, and the first electric push rod is electrically connected to the second control chip.

[0031] Preferably, it further comprises: an alarm module, electrically connected to the photoelectric sensor light emitter and the photoelectric sensor receiver respectively;

[0032] The alarm module comprises:

[0033] The first calculation unit is used to obtain environmental information of the current environment, and calculate the influence index of the current environment on the light emitted by the photoelectric sensor light emitter according to the environmental information:

[0034]

[0035] in, Indicates the influence index of the current environment on the light emitted by the photoelectric sensor light emitter; Indicates the current ambient temperature; represents absolute temperature; Indicates the atmospheric pressure of the current environment; Indicates standard atmospheric pressure; It represents the atmospheric partial pressure of water vapor in the current environment;

[0036] The second calculation unit is used to obtain the optical power of the detection light emitted by the photoelectric sensor light emitter, and calculate the light coverage rate of the transparent tube neck to the detection light according to the optical power and the influence index of the current environment on the light emitted by the photoelectric sensor light emitter:

[0037]

[0038] in, Indicates the light covering rate of the transparent tube neck to the detection light; Represents the total light receiving area on the photoelectric sensor receiver; It indicates the effective area of ​​the photoelectric sensor receiver that receives light. represents the radius of the transparent tube neck; represents the scattering coefficient of the transparent tube neck to the detection light; represents the attenuation coefficient of the transparent tube neck; represents the refraction angle of the detection light passing through the transparent tube neck; Indicates the optical power of the detection light emitted by the photoelectric sensor emitter;

[0039] A judging unit, used for judging whether the detection light is blocked, and when the light coverage rate is greater than or equal to a preset value, judging that the detection light is blocked, triggering a photoelectric switch, generating a switch control signal and sending it to the second control chip;

[0040] Otherwise, it is determined that the detection light is not blocked, and the puncture injection continues.

[0041] Compared with the prior art, the present invention provides an ultrasonic nerve block puncture injection device, which has the following beneficial effects:

[0042] 1. The present invention provides an injection handle, so that the anesthesiologist can hold the ultrasound probe in one hand and the injection handle equipped with the puncture needle body in the other hand to accurately complete the puncture and injection of nerve block. On the other hand, the photoelectric sensor light emitter and the photoelectric sensor receiver in the injection handle can accurately and timely feedback whether there is blood in the aspiration process to the anesthesiologist, so that one person can complete the operation;

[0043] 2. The present invention arranges an injection handle, and assembles the puncture needle tail at one end of the puncture needle body corresponding to the tail limit groove inside the injection handle. When the puncture needle tail is pushed tight, the limit blocks symmetrically arranged on the inner side of the injection handle slide up and down respectively under the extrusion of the joint. When the puncture needle tail is clamped in place, the limit blocks automatically pop up, thereby improving the stability of the puncture needle tail, so as to facilitate the assembly of the puncture needle body. When the puncture needle body needs to be disassembled, it only needs to press the limit switch on the outer side of the injection handle, which is more convenient to use.

[0044] 3. The present invention sets an infusion pump and connects the injection handle to the infusion pump wirelessly via Bluetooth. When the injection handle detects blood returning from the suction syringe, the infusion pump automatically stops injecting. If no blood is seen in the suction syringe, the photoelectric sensor does not issue a control action, and the injection pump completes the injection operation, thereby improving safety of use.

[0045] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The structure of the invention is scientific and reasonable, and it is safe and convenient to use, which provides great help to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0047] Figure 1This is an isometric structural diagram of the ultrasonic nerve block puncture injection device proposed by the present invention;

[0048] Figure 2 This is a schematic diagram of the isometric structure of one side of the infusion pump in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0049] Figure 3 This is a schematic diagram of the rear view structure inside the infusion pump in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0050] Figure 4 This is a schematic diagram of the explosion structure of the infusion pump in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0051] Figure 5 This is an isometric structural schematic diagram of the injection handle in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0052] Figure 6 This is a schematic diagram of the explosion structure of the injection handle in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0053] Figure 7 This is a schematic diagram of the bottom axonometric structure of the injection handle in the ultrasonic nerve block puncture injection device proposed by the present invention;

[0054] Figure 8 This is a schematic diagram of the rear view structure inside the injection handle of the ultrasonic nerve block puncture injection device proposed by the present invention;

[0055] In the figure: infusion pump 1, handle embedding groove 2, injection handle 3, syringe mounting groove 4, syringe medicine tube 5, push rod 6, syringe push piece 7, injection head 8, hose 9, connector 10, transparent tube neck 11, puncture needle tail 12, puncture needle body 13, tail limit groove 14, photoelectric sensor light emitter 15, photoelectric sensor receiver 16, limit block 17, limit switch 18, buzzer alarm 19, first control chip 20, first Bluetooth module 21, second control chip 22, second Bluetooth module 23, first electric push rod 24, first slide plate 25, slide groove 26, display screen 27, control button 28, second slide plate 29, connecting shaft 30, block 31, torsion spring 32, limit rod 33, second electric push rod 34, charging port 35, connecting port 36, power indicator light 37, battery 38, start button 39, pause button 40, pin 41, fixing part 42, jack 43, wedge strip 44, first spring 45, connecting rod 46, clamping block 47, ejection pin 48, second spring 49. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] See also Figure 1-8 The present invention provides a technical solution: an ultrasonic nerve block puncture injection device, comprising an infusion pump 1 and an injection handle 3, a handle embedding groove 2 is provided on one side of the infusion pump 1, the injection handle 3 is connected to the inner side of the handle embedding groove 2, a syringe mounting groove 4 is provided on the lower end of one side of the infusion pump 1, a syringe medicine tube 5 is connected to the inner side of the syringe mounting groove 4, a push rod 6 is slidably connected to the inner side of the syringe mounting groove 4, a syringe push piece 7 is connected to the inner side of the push rod 6, an injection head 8 is fixedly connected to the other end of the injection head 8, a hose 9 is threadedly connected to the other end of the hose 9, and the other end of the hose 9 is connected through a connector 10 is fixedly connected to the transparent tube neck 11, and the other end of the transparent tube neck 11 is fixedly connected to the puncture needle tail 12, and the puncture needle tail 12 is located at one end of the puncture needle body 13; by setting the injection handle 3, the anesthesiologist can hold the ultrasound probe in one hand and the injection handle 3 with the puncture needle body 13 in the other hand, so as to accurately complete the puncture and injection of nerve block. On the other hand, the application of the photoelectric sensor light emitter 15 and the photoelectric sensor receiver 16 in the injection handle 3 can accurately and timely feedback whether there is blood in the aspiration process to the anesthesiologist who is operating, and the operation can be completed by one person;

[0058] A tail wing limiting groove 14 is provided on the inner side of the injection handle 3 corresponding to the tail wing 12 of the puncture needle. A photoelectric sensor light emitter 15 and a photoelectric sensor receiver 16 are respectively provided at the upper and lower ends of the inner side of the puncture needle body 13. The photoelectric sensor light emitter 15 and the photoelectric sensor receiver 16 are located on the outer side of the transparent tube neck 11. A limiting block 17 is symmetrically provided on the inner side of the injection handle 3. The joint 10 is connected to the inner side of the injection handle 3 through the limiting block 17. A limiting switch 18 is provided on the outer side of the injection handle 3 corresponding to the limiting block 17. A buzzer alarm 19 is provided on the top of the injection handle 3. A first control chip 20 and a first Bluetooth module 21 are provided inside the injection handle 3. The buzzer alarm 19 Electrically connected to the first control chip 20, the infusion pump 1 is provided with a second control chip 22 and a second Bluetooth module 23. The puncture needle tail 12 at one end of the puncture needle body 13 is assembled corresponding to the tail limit groove 14 on the inner side of the injection handle 3. When the puncture needle tail 12 is pushed tightly, the limit blocks 17 symmetrically arranged on the inner side of the injection handle 3 slide up and down respectively under the extrusion of the connector 10. When the puncture needle tail 12 is clamped in place, the limit blocks 17 automatically pop up, thereby improving the stability of the puncture needle tail 12 to facilitate the assembly of the puncture needle body 13. When the puncture needle body 13 needs to be disassembled, it is only necessary to press the limit switch 18 on the outer side of the injection handle 3, which is more convenient to use.

[0059] In the present invention, preferably, a display screen 27 and a control button 28 are provided on the outside of the infusion pump 1, and the display screen 27 and the control button 28 are electrically connected to the second control chip 22. The running program is set through the control button 28, and the injection situation is displayed through the display screen 27.

[0060] In the present invention, preferably, the inner side of the syringe mounting groove 4 is located at the bottom of the syringe barrel 5 and is slidably connected with a second slide plate 29, one end of the second slide plate 29 located on the inner side of the syringe mounting groove 4 is fixedly connected with a connecting shaft 30, and the outer side of the connecting shaft 30 is rotatably connected with a stopper 31, a torsion spring 32 is arranged between the stopper 31 and the second slide plate 29, and the two ends of the torsion spring 32 are respectively fixedly connected to the second slide plate 29 and the stopper 31, when the syringe barrel 5 is placed, the syringe barrel 5 will squeeze the stopper 31 rotatably connected to the outer side of the connecting shaft 30 and rotate toward the inner side of the syringe mounting groove 4, and when the syringe barrel 5 passes over the stopper 31, the stopper 31 is automatically reset under the action of the torsion spring 32 on the outer side of the connecting shaft 30.

[0061] In the present invention, preferably, a limit rod 33 is fixedly connected to the outer side of the second slide plate 29, and the limit rod 33 is located on the outer side of the stop block 31. One end of the second slide plate 29 located inside the infusion pump 1 is fixedly connected to a second electric push rod 34. The second electric push rod 34 is fixedly connected to the inside of the infusion pump 1. The second electric push rod 34 is electrically connected to the second control chip 22, so that the second electric push rod 34 pushes and pulls the second slide plate 29 at the bottom of the syringe barrel 5 to slide, thereby causing the second slide plate 29 to drive the stop block 31 to be close to the outer side of the syringe barrel 5, thereby ensuring the stability of the syringe barrel 5.

[0062] In the present invention, preferably, a charging port 35 is provided on the inner side of the handle embedding groove 2 on one side of the infusion pump 1, a connection port 36 is fixedly connected to the outer side of the injection handle 3 corresponding to the charging port 35, a power indicator light 37 is provided on the outer side of the injection handle 3, and a battery 38 is provided inside the injection handle 3, the connection port 36 and the power indicator light 37 are both electrically connected to the battery 38, the battery 38 is electrically connected to the first control chip 20, and the injection handle 3 can be charged through the infusion pump 1.

[0063] In the present invention, preferably, a start button 39 and a pause button 40 are provided on the outside of the injection handle 3, and both the start button 39 and the pause button 40 are electrically connected to the first control chip 20. During injection, the start button 39 is continuously pressed to allow the first electric push rod 24 to push the local anesthetic at a constant speed. The syringe barrel 5 is pressed once to retract the syringe to inject 5 ml of local anesthetic (no blood return). If blood return is seen, an alarm prompt will be activated. The pause button 40 is used to end the injection operation.

[0064] In the present invention, preferably, the sides of the limit blocks 17 that are away from each other are fixedly connected with pins 41, and the outer sides of the pins 41 are slidably connected with fixing members 42, and the fixing members 42 are fixedly connected to the inner side of the injection handle 3. A plug hole 43 is provided on the inner side of the pins 41, and a wedge bar 44 is slidably connected to the bottom of the fixing member 42 on the inner side of the plug hole 43, and a first spring 45 is provided on the outer side of the pins 41 between the limit blocks 17 and the fixing member 42, and one end of the wedge bar 44 located on the outer side of the injection handle 3 is fixedly connected to the limit switch 18. With the advancement of the wedge bar 44, the pin 41 slides on the inner side of the fixing member 42 under the pressure of the wedge bar 44, thereby causing the pin 41 to drive the limit blocks 17 to slide up and down, so as to release the tightness of the limit blocks 17 against the joint 10.

[0065] In the present invention, preferably, one end of the wedge bar 44 located on the outside of the injection handle 3 is snap-connected with a clamp block 47, the clamp block 47 is located on the outside of the wedge bar 44, and the outsides of the upper and lower clamp blocks 47 are fixedly connected with a connecting rod 46, and the wedge bar 44 is snap-connected by the clamp block 47 to prevent the limit switch 18 from being accidentally touched during operation and triggering the limit block 17 to slide.

[0066] In the present invention, preferably, a pop-up pin 48 is slidably connected to one side of the injection handle 3, and one end of the pop-up pin 48 located inside the injection handle 3 is fixedly connected to a second spring 49, and the other end of the second spring 49 is fixedly connected to the inner side of the injection handle 3. A pop-up pin 48 is slidably connected to one side of the injection handle 3, and one end of the pop-up pin 48 located inside the injection handle 3 is fixedly connected to a second spring 49. When the puncture needle tail 12 is pressed tightly, the pop-up pin 48 compresses the second spring 49. When the limit block 17 releases the limit on the joint 10, the pop-up pin 48 pushes the joint 10 out under the action of the second spring 49 to facilitate the disassembly and installation of the puncture needle tail 12.

[0067] In the present invention, preferably, a first electric push rod 24 is fixedly connected inside the infusion pump 1, a first slide 25 is fixedly connected to the output end of the first electric push rod 24, the first slide 25 is fixedly connected to the push rod 6, a slide groove 26 is provided on the inner side of the syringe mounting groove 4 corresponding to the push rod 6, the first electric push rod 24 is electrically connected to the second control chip 22, so that the first electric push rod 24 pushes and pulls the first slide 25 at the output end to move, so that the first slide 25 drives the push rod 6 inside the slide groove 26 to slide, and then the push rod 6 pushes the syringe push piece 7 to perform injection.

[0068] The working principle and use process of the present invention are as follows: when in use, the anesthetic is stored inside the syringe barrel 5, the injection head 8 at one end of the syringe barrel 5 is connected to the hose 9, and then the hose 9 is fixedly connected to the puncture needle tail 12 at one end of the puncture needle body 13 through the joint 10 at the other end, and then the injection handle 3 stored through the handle embedding groove 2 on one side of the infusion pump 1 is taken out, and the puncture needle tail 12 is assembled corresponding to the tail limit groove 14 on the inner side of the injection handle 3. When the puncture needle tail 12 is pushed tightly, the limit blocks 17 symmetrically arranged on the upper and lower sides of the inner side of the injection handle 3 slide up and down respectively under the pressure of the joint 10. When the puncture needle tail 12 is clamped in place, the limit blocks 17 automatically pop up, and the outer sides of the limit blocks 17 are fixedly connected with pins 41, and the pins 41 are all connected to the injection The fixing piece 42 on the inner side of the injection handle 3 is slidably connected, and the limit block 17 slides up and down to compress the first spring 45 on the outer side of the pin 41. When the limit block 17 is not squeezed, it is reset under the action of the first spring 45. When the puncture needle tail 12 needs to be removed, the limit switch 18 on the outer side of the injection handle 3 is pressed to make the limit switch 18 push the wedge bar 44 to slide inside the socket 43 opened on the pin 41. The wedge bar 44 is slidably connected to the bottom of the fixing piece 42. As the wedge bar 44 is pushed forward, the pin 41 slides on the inner side of the fixing piece 42 under the squeezing of the wedge bar 44, so that the pin 41 drives the limit block 17 to slide up and down, so as to release the limit block 17 from being pressed against the joint 10, and a pop-up pin 48 is slidably connected to one side of the injection handle 3. The ejection pin 48 is located at one end of the injection handle 3 and is fixedly connected to a second spring 49. When the puncture needle tail 12 is pressed tightly against the ejection pin 48, the second spring 49 is in a compressed state. When the limit block 17 releases the limit of the joint 10, the ejection pin 48 pushes the joint 10 out under the action of the second spring 49, so as to facilitate the disassembly and installation of the puncture needle tail 12. After the puncture needle body 13 and the injection handle 3 are assembled, the syringe barrel 5 is installed on the inner side of the syringe mounting groove 4, so that the syringe push piece 7 is stuck on the inner side of the push rod 6. When the syringe barrel 5 is placed, the syringe barrel 5 will squeeze the stopper 31 connected to the outer side of the connecting shaft 30 to rotate toward the inner side of the syringe mounting groove 4. When the syringe barrel 5 passes over the stopper 31, the syringe barrel 5 is rotated on the connecting shaft 3 0, the stopper 31 is automatically reset under the action of the torsion spring 32 on the outside, and the stopper 31 is at a certain angle under the action of the limit rod 33 on the outside of the second slide plate 29, and then the first electric push rod 24 is controlled by the control button 28 on the outside of the infusion pump 1, so that the first electric push rod 24 pushes and pulls the first slide plate 25 at the output end to move, so that the first slide plate 25 drives the push rod 6 inside the slide groove 26 to slide, and then the push rod 6 pushes the syringe push piece 7, before one end of the syringe barrel 5 is not pressed against one side of the syringe mounting groove 4, the syringe barrel 5 will be pushed against the inner side of the syringe mounting groove 4 by the push of the push rod 6, and then the second electric push rod 34 is controlled by the control button 28, so that the second electric push rod 34 pushes and pulls the second slide plate 29 at the bottom of the syringe barrel 5 to slide,Then the second slide plate 29 drives the block 31 to be close to the outside of the syringe barrel 5, thereby ensuring the stability of the syringe barrel 5. Finally, the operation program of the first electric push rod 24 is set by the control button 28, so that the second control chip 22 inside the infusion pump 1 controls the operation of the first electric push rod 24 according to the control instruction. During puncture, the first Bluetooth module 21 inside the injection handle 3 is first connected to the second Bluetooth module 23 inside the infusion pump 1 by Bluetooth. The medical staff can hold the ultrasonic probe in one hand and the injection handle 3 equipped with the puncture needle body 13 in the other hand. During injection, the start button 39 is continuously pressed to make the first electric push rod 24 push the local anesthetic at a constant speed. Press the syringe barrel 5 to inject 5 ml of local anesthetic (no blood return). If blood return is seen, the syringe will start to suck the syringe back. Alarm prompt, the pause button 40 is used to end the injection operation, wherein, by setting a photoelectric sensor emitter 15 and a photoelectric sensor receiver 16 on the inner side of the injection handle 3, the photoelectric sensor emitter 15 can emit infrared light or visible light above the transparent tube neck 11, and the photoelectric sensor receiver 16 can receive the light without obstruction; when there is blood returning in the transparent tube neck 11, the light is blocked by the blood returning, and the photoelectric switch is activated, and a switch control signal is output, so that the second control chip 22 inside the infusion pump 1 controls the first electric push rod 24 to stop running, so as to achieve the effect of stopping the injection in time. At the same time, the first control chip 20 controls the buzzer alarm 19 on the top of the injection handle 3 to alarm. If no blood is seen in the suction syringe, the photoelectric sensor does not issue a control action, and the injection pump completes the injection operation.

[0069] In the present invention, preferably, a puncture depth monitoring module is further included, which is communicatively connected to the second control chip 22; the puncture depth monitoring module includes:

[0070] Information collection unit, used for:

[0071] Before performing the puncture injection, a first ultrasonic signal is acquired based on an ultrasonic probe held by a medical staff to confirm the collection position of the first ultrasonic signal;

[0072] Based on the human body part corresponding to the acquisition position, obtaining a standard ultrasonic signal corresponding to the human body part, comparing the first ultrasonic signal with the standard ultrasonic signal to obtain a first signal difference, and determining the lesion position according to the first signal difference;

[0073] Based on the lesion location, determining a preset puncture depth of the puncture needle body 13;

[0074] The first monitoring unit is used for:

[0075] After the puncture injection begins, a second ultrasonic signal of the ultrasonic probe held by the medical staff is obtained in real time;

[0076] Comparing the first ultrasonic signal with the second ultrasonic signal to obtain a second signal difference, and determining the signal influence of the puncture needle body 13 on the ultrasonic signal based on the second signal difference;

[0077] Identify units for:

[0078] Acquire a current ultrasonic signal, determine the needle tip position of the puncture needle body 13 based on the signal influence, and determine a first distance between the needle tip position and the lesion position according to the waveform change of the current ultrasonic wave;

[0079] Acquire the current puncture depth of the puncture needle body 13, and calculate the initial lesion depth based on the current puncture depth and the first distance;

[0080] The second monitoring unit is used for:

[0081] When the initial lesion depth is consistent with the preset puncture depth and the puncture depth of the puncture needle body 13 is monitored to be equal to the preset puncture depth, an injection instruction is sent to the second control chip 22;

[0082] When the initial lesion depth is inconsistent with the preset puncture depth, acquiring historical ultrasonic signals, filtering the historical ultrasonic signals according to the signal influences, and obtaining a clean ultrasonic signal;

[0083] The net ultrasonic signal is aligned with the waveform diagram, and the waveform mutation position is determined according to the alignment result; the actual lesion depth is determined according to the waveform mutation position and the ultrasonic detection characteristics, and when it is monitored that the puncture depth of the puncture needle body 13 is equal to the actual lesion depth, an injection instruction is sent to the second control chip 22.

[0084] In this embodiment, the first ultrasonic signal refers to a reflected sound wave signal of an ultrasonic signal emitted by an ultrasonic probe, which is obtained by detecting the position where puncture injection is to be performed using an ultrasonic probe before puncture injection.

[0085] In this embodiment, the collection position refers to the position where the first ultrasonic signal is collected, which is also the position where the puncture injection is to be performed.

[0086] In this embodiment, the standard ultrasonic signal refers to an ultrasonic signal of a part of the human body corresponding to the position where the first ultrasonic signal is collected when no lesion occurs.

[0087] In this embodiment, the first signal difference refers to the difference between the first ultrasonic signal and the standard ultrasonic signal.

[0088] In this embodiment, the lesion location refers to the location where the lesion occurs in the patient and is also the location that the puncture needle needs to reach.

[0089] In this embodiment, the preset puncture depth refers to the length of the puncture needle body entering the human body determined according to the lesion location predicted before puncture injection.

[0090] In this embodiment, the second ultrasonic wave signal refers to a reflected sound wave signal of an ultrasonic wave signal emitted by an ultrasonic probe obtained by ultrasonic detection of the location where the puncture injection is to be performed after the puncture injection begins.

[0091] In this embodiment, the second signal difference refers to the difference between the first ultrasonic signal and the second ultrasonic signal, and the difference between the two lies in the reflected signal of the puncture needle body in the second ultrasonic signal collected by the ultrasonic probe.

[0092] In this embodiment, the signal impact refers to the impact of the puncture needle body entering the patient's body on the reflected sound wave signal of the ultrasonic signal emitted by the ultrasonic probe, and the impact will change with the depth of the puncture needle body entering the human body.

[0093] In this embodiment, the first distance refers to the distance between the needle tip of the current needle body and the lesion position of the patient.

[0094] In this embodiment, the current puncture depth refers to the length of the needle body currently inserted into the patient's body.

[0095] In this embodiment, the initial lesion depth refers to the sum of the distance between the needle tip of the current needle body and the lesion position of the patient and the length of the current needle body inserted into the patient's body, that is, the sum of the first distance and the current puncture depth.

[0096] In this embodiment, the historical ultrasonic signal refers to all second ultrasonic signals from the start of the puncture injection to the acquisition of the current ultrasonic signal.

[0097] In this embodiment, the clean ultrasonic signal refers to the historical ultrasonic signal after filtering to remove the influence of the puncture needle body.

[0098] In this embodiment, the waveform mutation position refers to the position where the distribution of peaks or troughs on the net ultrasonic signal suddenly changes. When there is no lesion in the patient's body, the waveform change of the reflected wave signal collected by the ultrasonic signal at this collection position has a certain regularity.

[0099] In this embodiment, the ultrasonic detection characteristic means that the position of the object can be determined according to the reflected wave of the ultrasonic signal.

[0100] In this embodiment, the actual lesion depth refers to the distance from the actual lesion position of the patient to the skin surface based on the ultrasonic signal collected during the puncture injection process of the patient.

[0101] The working principle and beneficial effects of the above technical solution are as follows: before performing puncture injection, the present invention uses an ultrasonic probe held by a medical staff to obtain an ultrasonic signal, and compares the ultrasonic signal with a standard ultrasonic signal without lesions to determine the lesion location and obtain a preset puncture depth, thereby providing a reference and basis for medical staff to perform puncture injection; after the puncture injection begins, the ultrasonic signal is obtained again and compared with the previous ultrasonic signal to determine the signal influence of the puncture needle body on the ultrasonic signal, thereby providing a basis for filtering historical ultrasonic signals; when it is detected that the initial lesion depth is inconsistent with the preset puncture depth, the historical ultrasonic signal is filtered to eliminate the influence of the puncture needle body on the actual lesion depth confirmation, thereby ensuring the accuracy of the data; at the same time, after the initial lesion depth is inconsistent with the preset puncture depth, the waveform graph corresponding to the net ultrasonic signal is aligned, and according to the alignment processing result, the waveform mutation position is determined again, thereby helping to overcome the prediction error caused by individual differences among patients and provide a more accurate puncture depth for medical staff.

[0102] In the present invention, preferably, it further comprises: an alarm module, which is electrically connected to the photoelectric sensor light emitter 15 and the photoelectric sensor receiver 16 respectively;

[0103] The alarm module comprises:

[0104] The first calculation unit is used to obtain environmental information of the current environment, and calculate the influence index of the current environment on the light emitted by the photoelectric sensor light emitter according to the environmental information:

[0105]

[0106] in, Indicates the influence index of the current environment on the light emitted by the photoelectric sensor light emitter; Indicates the current ambient temperature; represents absolute temperature; Indicates the atmospheric pressure of the current environment; Indicates standard atmospheric pressure; It represents the atmospheric partial pressure of water vapor in the current environment;

[0107] The second calculation unit is used to obtain the optical power of the detection light emitted by the photoelectric sensor light emitter 15, and calculate the light coverage rate of the transparent tube neck 11 on the detection light according to the optical power and the influence index of the current environment on the light emitted by the photoelectric sensor light emitter:

[0108]

[0109] in, Indicates the light covering rate of the transparent tube neck 11 to the detection light; represents the total light receiving area on the photoelectric sensor receiver 16; represents the effective area of ​​the photoelectric sensor receiver 16 that receives light, represents the radius of the transparent tube neck 11; represents the scattering coefficient of the transparent tube neck 11 to the detection light; It represents the attenuation coefficient of the transparent tube neck 11. The attenuation coefficient is related to the material of the transparent tube neck 11. Different materials have different attenuation coefficients. represents the refraction angle of the detection light passing through the transparent tube neck 11; represents the optical power of the detection light emitted by the photoelectric sensor light emitter 15;

[0110] A judgment unit, used to judge whether the detection light is blocked, and when the light coverage rate is greater than or equal to a preset value, it is determined that the detection light is blocked, and the photoelectric switch is triggered to generate a switch control signal and send it to the second control chip 22;

[0111] Otherwise, it is determined that the detection light is not blocked, and the puncture injection continues.

[0112] In this embodiment, the current environment refers to the environment in which the puncture operation is performed. The environmental information includes the temperature, humidity and atmospheric pressure of the current environment.

[0113] The working principle and beneficial effects of the above technical solution are as follows: the light coverage rate of the transparent tube neck on the detection light is calculated according to the optical power of the detection light and the influence index of the current environment on the light emitted by the photoelectric sensor light emitter. In the process of calculating the light coverage rate, the influence of the environment and the material of the transparent tube neck on the detection light is considered to ensure that the calculation result is closer to the true value. Subsequently, the coverage rate is compared with the preset value to determine whether the detection light is blocked, so that the optical switch will be triggered as long as the blood return amount in the transparent tube neck reaches the preset value, and the effect of stopping the injection can be achieved without waiting until the light is completely covered.

[0114] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic nerve block puncture injection device, comprising an infusion pump (1) and an injection handle (3), characterized in that: A handle embedding groove (2) is provided on one side of the infusion pump (1), and an injection handle (3) is snap-connected to the inner side of the handle embedding groove (2). A syringe mounting groove (4) is provided on the lower end of one side of the infusion pump (1), and a syringe medicine tube (5) is snap-connected to the inner side of the syringe mounting groove (4). A push rod (6) is slidably connected to the inner side of the syringe mounting groove (4), and a syringe push piece (7) is snap-connected to the inner side of the push rod (6). The other end of the syringe medicine tube (5) is fixedly connected to an injection head (8), and the other end of the injection head (8) is threadedly connected to a hose (9). The other end of the hose (9) is fixedly connected to a transparent tube neck (11) via a joint (10), and the other end of the transparent tube neck (11) is fixedly connected to a puncture needle tail (12), and the puncture needle tail (12) is located at one end of the puncture needle body (13); The injection handle (3) is provided with a tail wing limiting groove (14) corresponding to the tail wing (12) of the puncture needle. The upper and lower ends of the inner side of the puncture needle body (13) are respectively provided with a photoelectric sensor light emitter (15) and a photoelectric sensor receiver (16). The photoelectric sensor light emitter (15) and the photoelectric sensor receiver (16) are located on the outer side of the transparent tube neck (11). The inner side of the injection handle (3) is symmetrically provided with a limiting block (17) at the upper and lower sides. The joint (10) is connected to the injection handle (3) by the limiting block (17). The injection handle (3) is snap-fitted and connected to the inner side of the injection handle (3); a limit switch (18) is arranged on the outer side of the injection handle (3) corresponding to the limit block (17); a buzzer alarm (19) is arranged on the top of the injection handle (3); a first control chip (20) and a first Bluetooth module (21) are arranged inside the injection handle (3); the buzzer alarm (19) is electrically connected to the first control chip (20); and a second control chip (22) and a second Bluetooth module (23) are arranged inside the infusion pump (1); The side of the limit block (17) away from each other is fixedly connected with a pin column (41), the outer side of the pin column (41) is slidably connected with a fixing member (42), the fixing member (42) is fixedly connected to the inner side of the injection handle (3), the inner side of the pin column (41) is provided with a plug hole (43), the inner side of the plug hole (43) is slidably connected with a wedge bar (44) at the bottom of the fixing member (42), the outer side of the pin column (41) is provided with a first spring (45) between the limit block (17) and the fixing member (42), and the end of the wedge bar (44) located on the outer side of the injection handle (3) is fixedly connected to the limit switch (18); One end of the wedge-shaped strip (44) located outside the injection handle (3) is snap-connected with a clamping block (47), the clamping block (47) is located outside the wedge-shaped strip (44), and the outsides of the upper and lower clamping blocks (47) are fixedly connected with connecting rods (46); A pop-up pin (48) is slidably connected to one side of the injection handle (3); one end of the pop-up pin (48) located inside the injection handle (3) is fixedly connected to a second spring (49); the other end of the second spring (49) is fixedly connected to the inner side of the injection handle (3); A first electric push rod (24) is fixedly connected inside the infusion pump (1); a first slide plate (25) is fixedly connected to an output end of the first electric push rod (24); the first slide plate (25) is fixedly connected to the push rod (6); a slide groove (26) is provided on the inner side of the syringe mounting groove (4) corresponding to the push rod (6); and the first electric push rod (24) is electrically connected to a second control chip (22).

2. The ultrasonic nerve block puncture injection device according to claim 1, characterized in that: A display screen (27) and a control button (28) are provided on the outside of the infusion pump (1); the display screen (27) and the control button (28) are both electrically connected to the second control chip (22).

3. The ultrasonic nerve block puncture injection device according to claim 1, characterized in that: A second slide plate (29) is slidably connected to the bottom of the syringe medicine tube (5) on the inner side of the syringe mounting groove (4); a connecting shaft (30) is fixedly connected to one end of the second slide plate (29) located on the inner side of the syringe mounting groove (4); a stopper (31) is rotatably connected to the outer side of the connecting shaft (30); a torsion spring (32) is provided between the stopper (31) and the second slide plate (29); and two ends of the torsion spring (32) are fixedly connected to the second slide plate (29) and the stopper (31), respectively.

4. The ultrasonic nerve block puncture injection device according to claim 3, characterized in that: A limiting rod (33) is fixedly connected to the outside of the second slide plate (29), and the limiting rod (33) is located on the outside of the stopper (31). One end of the second slide plate (29) located inside the infusion pump (1) is fixedly connected to a second electric push rod (34), and the second electric push rod (34) is fixedly connected to the inside of the infusion pump (1). The second electric push rod (34) is electrically connected to the second control chip (22).

5. The ultrasonic nerve block puncture injection device according to claim 1, characterized in that: It also includes a puncture depth monitoring module, which is communicatively connected to the second control chip (22); The puncture depth monitoring module comprises: Information collection unit, used for: Before performing the puncture injection, a first ultrasonic signal is acquired based on an ultrasonic probe held by a medical staff to confirm the collection position of the first ultrasonic signal; Based on the human body part corresponding to the acquisition position, obtaining a standard ultrasonic signal corresponding to the human body part, comparing the first ultrasonic signal with the standard ultrasonic signal to obtain a first signal difference, and determining the lesion position according to the first signal difference; Based on the lesion location, determining a preset puncture depth of the puncture needle body (13); The first monitoring unit is used for: After the puncture injection begins, a second ultrasonic signal of the ultrasonic probe held by the medical staff is obtained in real time; Comparing the first ultrasonic signal with the second ultrasonic signal to obtain a second signal difference, and determining the signal influence of the puncture needle body (13) on the ultrasonic signal based on the second signal difference; Identify units for: Acquiring a current ultrasonic signal, determining the needle tip position of the puncture needle body (13) based on the influence of the signal, and determining a first distance between the needle tip position and the lesion position according to a change in the waveform of the current ultrasonic wave; Acquiring a current puncture depth of the puncture needle body (13), and calculating an initial lesion depth based on the current puncture depth and the first distance; The second monitoring unit is used for: When the initial lesion depth is consistent with the preset puncture depth and the puncture depth of the puncture needle body (13) is monitored to be equal to the preset puncture depth, an injection instruction is sent to the second control chip (22); When the initial lesion depth is inconsistent with the preset puncture depth, acquiring historical ultrasonic signals, filtering the historical ultrasonic signals respectively according to the signal influence, and obtaining a net ultrasonic signal; The net ultrasonic signal is aligned with the corresponding waveform diagram, and the waveform mutation position is determined according to the alignment processing result; the actual lesion depth is determined according to the waveform mutation position and the ultrasonic detection characteristics, and when it is monitored that the puncture depth of the puncture needle body (13) is equal to the actual lesion depth, an injection instruction is sent to the second control chip (22).

6. The ultrasonic nerve block puncture injection device according to claim 1, characterized in that: A charging port (35) is provided on one side of the infusion pump (1) and is located inside the handle embedding groove (2); a connection port (36) is fixedly connected to the outside of the injection handle (3) and corresponds to the charging port (35); a power indicator light (37) is provided on the outside of the injection handle (3); a storage battery (38) is provided inside the injection handle (3); the connection port (36) and the power indicator light (37) are both electrically connected to the storage battery (38); and the storage battery (38) is electrically connected to the first control chip (20); A start key (39) and a pause key (40) are arranged on the outside of the injection handle (3), and the start key (39) and the pause key (40) are both electrically connected to the first control chip (20).

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