52 results about "Nerve block anesthesia" patented technology

An objective and reproducible system for, and method of, monitoring and / or controlling the pressure during nerve blockage injection, especially by less experienced personnel, is provided in order to decrease the possibility of intraneuronal injection. More specifically, the present invention employs a pressure sensing and / or limiting device located between an injection device (typically a syringe) and a nerve block needle whereby injection pressure during a nerve block injection can be easily and objectively monitored, thereby allowing the operator to monitor the injection pressure and / or injection speed during a nerve blockage injection procedure and to take appropriate corrective actions if abnormal pressure conditions are observed.

The invention provides a method for obtaining local anesthetics encapsulated in liposomes, such as multivesicular liposomes, with high encapsulation efficiency and slow release in vivo. When the encapsulated anesthetic is administered as a single intracutaneous dose, the duration of anesthesia and half-life of the drug at the local injection site is increased as compared to injection of unencapsulated anesthetic. The maximum tolerated dose of the encapsulated anesthetic is also markedly increased in the liposomal formulation over injection of unencapsulated anesthetic. These results show that the liposomal formulation of local anesthetic is useful for sustained local infiltration and nerve block anesthesia.

An objective and reproducible system for, and method of, monitoring and / or controlling the pressure during nerve blockage injection, especially by less experienced personnel, is provided in order to decrease the possibility of intraneuronal injection. More specifically, the present invention employs a pressure sensing and / or limiting device located between an injection device (typically a syringe) and a nerve block needle whereby injection pressure during a nerve block injection can be easily and objectively monitored, thereby allowing the operator to monitor the injection pressure and / or injection speed during a nerve blockage injection procedure and to take appropriate corrective actions if abnormal pressure conditions are observed.

The invention discloses an ultrasound-guided nerve-block auxiliary support. The ultrasound-guided nerve-block auxiliary support comprises an ultrasonic support body and a fixing and adjusting device used for fixing a medical ultrasonic probe and adjusting the fixing position of the medical ultrasonic probe. The fixing and adjusting device comprises a fixing rod, an extension rod, a telescopic rod, a snake-shaped setting hose and an ultrasonic probe fixing frame. The ultrasound-guided nerve-block auxiliary support has the following beneficial effects: due to the fact that the medical ultrasonic probe is clamped and fixed by the ultrasonic probe fixing frame and an end head of the medical ultrasonic probe is abutted against a position in need of anesthesia of a patient, a doctor does not need to hold the medical ultrasonic probe to press against the position requiring anesthesia all the time, thereby greatly saving workload of medical staff; meanwhile, medical staff can carry out other operation by other hands; puncture efficiency of nerve block anesthesia is thus indirectly improved; the end head of the medical ultrasonic probe can be adapted to be abutted against position in the need of anesthesia of the patient at any place and angle; and therefore, the ultrasound-guided nerve-block auxiliary support is highly adaptive.

The invention discloses an electronic pain sense measuring pen, which belongs to the field of medical instruments. The electronic pain sense measuring pen is characterized by being manufactured according to a principle that electric stimulation pain is generated when a high-voltage low-current electron impulse acts on human skin. The electron impulse is generated by adopting a piezoelectric effect principle of ceramic crystals. The electronic pain sense measuring pen consists of a pen head, a shell, a trigger switch, a piezoelectricity generator and a conducting wire. The electronic pain sense measuring pen has the advantage of measuring the level of anesthesia to determine the anesthetic effect and guide the anesthesia dosage when applied to intravertebral anesthesia and nerve blocking anesthesia. The electronic pain sense measuring pen avoids inaccurate feeling of pain stimulation of a patient because of the non-constant needling force in a needle punching method, ensures that the measurement result is more accurate, and cannot burn skin and do harm to a body at the same time of safe electric stimulation, thereby eliminating pains of patients, and reducing the probability of infection and blood-source spread diseases.

The embodiment of the invention discloses a nerve block anesthesia robot which comprises a control system, a mechanical arm, an ultrasonic device, a display device and an automatic injection system. The ultrasonic device is mounted on the mechanical arm, acquires a medical ultrasound image of the human tissue and provides the image to the display device, and the display device receives and displays the medical ultrasound image; the control system sends a movement instruction to the mechanical arm according to an input movement indication, so that the mechanical arm moves according to the movement instruction; meanwhile, the control system sends an injection instruction to an automatic injection system according to the input injection indication, so that the automatic injection system operates an injection pump and a pushing needle according to the injection instruction to execute the injection operation. It can be seen that the ultrasonic device and the display device are utilized to accurately position a puncture position, and the mechanical arm and the automatic injection system are utilized to operate the pushing needle to puncture a designated position for administration, localanesthetic poisoning can also be effectively avoided, and thus the safety of a nerve block anesthesia operation is improved.

The invention discloses a clinical positioning device for a nerve block anesthesia needle, and relates to the technical field of medical instruments. The clinical positioning device for the nerve block anesthesia needle comprises a supporting plate; a groove is formed just in the middle of the supporting plate; a spherical sliding block is glidingly connected in the groove; and a cylindrical groove is formed in the spherical sliding block. According to the clinical positioning device for the nerve block anesthesia needle in the invention, the arranged spherical sliding block slides in the groove; therefore, a needle head sleeve can be inclined in a proper angle by rotating the spherical sliding block; then, a threaded rod is rotated, so that the spherical sliding block is extruded and fixed through an extrusion block; then, an injection needle tube can be put into the cylindrical groove to perform injection; multi-angle injection of the injection needle tube can be realized; due to mutual matching among arranged supporting block, nut, screws, arc-shaped fixed blocks, spherical sliding block and cylindrical groove, an injector can be put into the cylindrical groove; then, the two arc-shaped fixed blocks are extruded by rotating the two screws; and thus, the fact that the two arc-shaped fixed blocks clamp and fix the upper side of the injection needle tube can be realized.

An embodiment of the invention discloses a nerve block anesthesia robot. The nerve block anesthesia robot comprises a control system, a mechanical arm, an ultrasonic device, a display device and an automatic injection system, wherein the ultrasonic device is mounted on the mechanical arm; the ultrasonic device acquires the medical ultrasonic image of human tissue and transmits the ultrasonic imageto the display device, and the display device receives and displays the medical ultrasonic image; the control system transmits a moving instruction to the mechanical arm according to an input movinginstruction to allow the mechanical arm to move according to the moving instruction; meanwhile, the control system transmits an injection instruction to the automatic injection system according to aninput injection instruction to allow the automatic injection system to control an injection pump and a needle so as to perform injection. The nerve block anesthesia robot has the advantages that precise positioning of the puncture position can be achieved by the ultrasonic device and the display device, the mechanical arm and the automatic injection system are used to operate the needle to penetrate the appointed position so as to perform administration, local anesthetic intoxication can be avoided effectively, and the safety of nerve block anesthesia surgery is increased.

The invention discloses a drug injection system for nerve block anesthesia under the guidance of ultrasound. A syringe is fixedly installed at the front end of the casing of the drug injection device, and a slide rail is fixedly installed at the rear end horizontally. The piston rod of the syringe is connected with a slider through a connecting rod. The block is slidingly connected with the slide rail, and the tail end of the needle is connected with a connecting pipe and a connecting wire through the needle seat. There is a controller embedded in it, and the controller is electrically connected to the slider and the connecting head through wires. The needle head is composed of a needle point and a triangular needle tube. The three edges of the triangular needle tube are all round and blunt. Surrounded by three equilateral triangles, each equilateral triangle is provided with a drug outlet hole in the center. The invention realizes drug injection and withdrawal before drug injection through a simple button switch, so that it can be judged whether the needle tip is in the blood vessel, greatly reducing the occurrence of anesthesia complications, and reducing pain for patients.

The invention discloses an automatic drug injection device for nerve blocking. The automatic drug injection device comprises a power device, an injector and a needle holding handle, the injector comprises a needle cylinder and a piston rod capable of moving in the needle cylinder, a piston handle is arranged at the tail end of the piston rod, the front end of the needle cylinder communicates witha puncture needle through a drug injection catheter, a needle fin is arranged at the edge of the other end of the needle cylinder, and the drug injection catheter travels in the needle holding handle;the power device comprises a shell, a diving mechanism, needle fin fixing clamps and a piston handle fixing clamp, a moving groove is formed in the shell, the needle fin fixing clamps are fixed to the shell, and the piston handle fixing clamp is slidably arranged on the moving groove; and a drug injection button and a pumpback button are arranged on the needle holding handle and connected with the driving mechanism through control wires. An operation doctor can control injection or pumpback by the single hand through the drug injection button and the pumpback button on the needle holding handle, nerve blocking anesthesia can be completed only by one person, and thus manpower is saved; and an anesthetist knows about the pressure state of drug injection advantageously, and the reference isprovided for the drug injection situation.

The invention belongs to the field of medical appliances, and discloses a syringe pump for nerve block anesthesia and having a suction function in order to solve the technical problem that the conventional nerve block operations are completed by many workers. The syringe pump includes an infusion pump body; the infusion pump body includes a microcomputer system, a pump device, a detection device,an alarm device, and a display device; the pump device is used for providing power for infusion and pumping-back; the microcomputer system is used for controlling a working state of the pump device; the detection device is used for detecting the flow speed and the flow amount of liquid, the blocking pressure, leakage and bubbles and feeding the signals back to the microcomputer system; the alarm device is used for sending an alarm according to a command of the microcomputer; a dual-pedal type control device includes a pumping-back pedal and an infusion pedal; the pumping-back pedal is connected to a first signal input device for sending a pumping-back signal to the microcomputer system; and the infusion pedal is connected to a second signal input device for sending an infusion signal to the microcomputer system.

The invention discloses a nerve block anesthesia needle positioning apparatus. The nerve block anesthesia needle positioning apparatus comprises a base; a horizontal movement device is arranged on the top surface of the base; a vertical movement device is arranged on the top surface of the horizontal movement device; a horizontal connection rod is fixedly connected with one side of the vertical movement device; an installation plate is fixedly mounted on one side of the connection rod; a spherical through groove is formed on the front of the installation plate; a concentric sphere is arranged inside the spherical through groove; and the sphere is only capable of rotating along the center of the sphere in the spherical through groove. Being arranged with the sphere, the nerve block anesthesia needle positioning apparatus is capable of driving an anesthesia needle to rotate along with rotation of the sphere in the spherical through groove, thereby having position of the tip of the anesthesia needle adjusted; and thus, convenient adjustment is allowed so as to improve flexibility of the tip of the anesthesia needle. Moreover, the nerve block anesthesia needle positioning apparatus is capable of keeping the tip of the anesthesia needle at a relatively good position so as to facilitate injection of an anesthetic. In addition, the tip of the anesthesia needle is driven to be inserted into peripheral nerve trunk of a patient along with rotation of a first bolt, so that, deviation of the tip of the anesthesia needle upon insertion is avoided so as to make the insertion point more accurate.

The invention belongs to the technical field of medical puncture equipment, and particularly discloses an ultrasound-guided peripheral nerve block anesthesia directional puncture device which comprises a first fixing tube, a connecting plate is arranged on the outer side of the first fixing tube, a first motor is arranged above the connecting plate, and a first rotating shaft is arranged at the output end of the first motor. A first gear is arranged on the outer side of the first rotating shaft, a second gear is arranged on the outer side of the first fixing pipe, a connecting ring is arranged below the second gear, a first connecting frame is arranged below the connecting ring, a second fixing pipe is arranged on the inner side of the first connecting frame, and a first electric telescopic rod is arranged on the inner side of the second fixing pipe. An electrode plate is arranged at one end of the first electric telescopic rod, a third fixing pipe is arranged on the inner side of the first connecting frame, a second electric telescopic rod is arranged on the inner side of the third fixing pipe, and an ultrasonic probe is arranged at one end of the second electric telescopic rod; neural stimulation and ultrasonic guidance are combined, and the problem that tiny nerves are difficult to recognize under ultrasonic guidance is effectively solved.

The invention discloses a nerve block puncture medicine injection device, and relates to the technical field of medical instruments. The device comprises an infusion control device which is used for controlling the infusion speed and is provided with a puncture needle used for puncturing skin and subcutaneous tissue and injecting medicine to the periphery of nerves or fascia gaps at one end, a detachable sleeve which sleeves the outside of the puncture needle and is used for storing liquid medicine and providing a constant-speed infusion device with constant output speed, and an infusion tubewhich is arranged between the constant-speed infusion device and the infusion control device and is used for communicating the constant-speed infusion device with the infusion control device. Thus, the device is easy to operate, the operation of injecting local anesthetics can be completed by one person, the speed of injecting local anesthetics can be controlled at any time, and the problem that the operation process of nerve block anesthesia is tedious and the dosage and speed of injected drugs are not easy to control in the prior art is solved.

The invention discloses a nerve block anesthesia medicine injection pressure measurement alarm device under ultrasound. The device comprises an injector, a pressure sensor, a constraint unit and a mounting base; a nerve block puncture needle is connected to a liquid medicine outlet of the injector through a three-way joint; the pressure sensor is connected with the three-way joint through a connecting mechanism; a single-chip microcomputer and an alarm unit are installed on the side face of the mounting base, a power source is arranged in the mounting base, and the single-chip microcomputer iselectrically connected with the pressure sensor through a telescopic cable; the binding unit comprises a hinge and binding belts; the binding belt is hinged to the mounting base through hinges, the two binding belts are symmetrically arranged up and down, and the ends of the two binding belts are connected through an inserting unit.The nerve block anesthesia medicine injection pressure measurement alarm device is good in use flexibility, convenient to use in the field, high in practicability and convenient to carry.

The invention provides an ultrasound-guided nerve block anesthesia puncture method based on artificial intelligence, and the method comprises the steps: S11, collecting a target nerve block image through an ultrasonic probe, and positioning a to-be-punctured point in the target nerve block image; s12, identifying tissues except the point to be punctured in the target nerve block image, marking the tissues as dangerous areas, and planning a path from the skin to the point to be punctured by taking avoidance of the dangerous areas as a principle; s13, electromyographic signals of the arms of the operator are collected in real time, and an intention prediction model between the electromyographic signals and hand actions is established; and S14, determining a space coordinate system position of a puncture needle point based on the to-be-punctured point, associating the puncture needle point with the intention prediction model, monitoring whether the puncture needle point punctures along the planned path, and if not, sending out an early warning signal. The precision, the safety, the efficiency and the reliability of puncture are improved, the operation difficulty and the complication risk are reduced, and meanwhile, the development of personalized medical treatment is promoted.

The invention discloses a selective setting-off micro-control operation for deep dorsal veins of the penis. The operation comprises the following steps: 1, conventional disinfection is performed with a 0.5% iodophor solution, and a sterile operation towel is laid; 2, after nerve blocking anesthesia on the root of the penis takes effect, a 2.5 cm incision is incised transversely on the back side of the penis, shallow fascia and deep fascia are sequentially incised, the root of the penis and albuginea are sufficiently exposed, three longitudinal deep dorsal veins are separated bluntly, and double selective segmented setting-off ligation is performed at the root of the penis with a 1# filament; 3, collateral veins on two sides of the penis are sequentially sutured, and pronation veins are sutured one by one; 4, airtight hemostasis is performed again, the deep fascia and shallow fascia are subjected to interrupted suturing with a 5-0 absorption line, and interrupted suturing is performed on the skin incision with the same line. The operative wound is small, the operation time is short, the operation is safe, a patient cannot feel pain, bleeds a little, recovers quickly after the operation and has high anti-infection capacity, and the treatment effect is ideal.

The invention discloses a nerve block anesthesia injection pressure measurement alarm device which comprises an injection needle cylinder used for injecting anesthesia and an alarm body used for alarming, a sealing piston is slidably installed in the injection needle cylinder, and a push rod is fixedly installed on the side face of the sealing piston. A liquid crystal display screen used for displaying the working state is fixedly installed on the front side of the alarm body, an indicator light which is turned on according to the situation is arranged above the liquid crystal display screen, and control keys used for adjusting parameters are arranged below the liquid crystal display screen. According to the pressure measurement alarm device for nerve block anesthesia injection, when the injection needle cylinder is used for injecting anesthesia, the injection pressure condition is monitored in real time through the pressure sensor installed at the front end of the injection needle cylinder, when the pressure is increased, the blocking condition appears, and at the moment, the signal transmission line transmits a signal to the alarm body; alarm (sound and light) is given out through an indicator light and a loudspeaker in the alarm body.

The invention discloses an enhanced developing puncture needle for ultrasound-guided nerve block. The enhanced developing puncture needle comprises an outer needle, wherein a cutting edge is arranged at one end of the outer needle, a needle seat is fixedly connected to the other end of the outer needle, the outer needle comprises an outer shell, an inner shell is eccentrically fixed to the interior of the outer shell, a sealing cover is fixedly connected between the inner shell and the outer shell, a cavity is formed between the inner shell and the outer shell and filled with gas, a plurality of reflecting grooves are formed in the end, close to the cutting edge, of the outer wall of the inner shell in a circumferential array mode, an inner needle is detachably connected into the inner shell, and the length of the inner needle is larger than the sum of the lengths of the outer needle and the needle seat. The cavity is filled with the gas with high ultrasonic reflectivity, and the reflecting grooves are formed in the surface of the inner shell, so that the ultrasonic reflectivity is improved, developing is clearer under ultrasound, the probability that a puncture needle accidentally hurts surrounding organs is reduced, the puncture administration precision is improved, the nerve block anesthesia effect is improved, and the operation success rate is increased; and the inner needle is arranged and can be used for puncture sampling and minimally invasive surgery, and the application range of the puncture needle is widened.

The present invention provides a nerve block anesthesia needle, an anesthesia device and a using method thereof. The nerve block anesthesia needle includes a syringe with a cavity and a liquid outlet hole at the front end, a piston core rod matched with the syringe, and a speed-blocking assembly, and the speed-blocking assembly includes a folded arm and a support bladder, so the The barrel wall of the needle cylinder is provided with a notch that penetrates to the cavity, the hinged arm is hinged in the notch, and the hinged arm is connected to the needle through a support bag from an extension end of its hinge point. The inner wall of the cylinder is connected, and the support bag is filled with gas, so that the hinged arm extends from the notch to the cavity from the other extension end of its hinge point; the support bag is provided with an energy A seal that tears and vents gas, and the hinged arm is attached to the seal. Compared with the related art, the nerve block anesthesia needle provided by the present invention has the function of reminding the operator to withdraw, which improves the accuracy of puncture and reduces the discomfort of the patient.

The utility model belongs to the technical field of anesthesia, and discloses an ultrasound-guided nerve block anesthesia puncture device which comprises an ultrasonic probe, a fixing device, a cable, a puncture needle, an anesthetic injection channel, a sensor, an encoder, a high-performance processor, a human-computer interaction interface and a mechanical arm. Through real-time imaging of the ultrasonic probe and accurate control of the control system, the puncture needle can be accurately guided to a target nerve position, and anesthesia accuracy is improved. Due to the introduction of the mechanical arm, the puncture operation is simpler and more convenient, and the requirements on the operation experience and skills of doctors are reduced. Due to the fact that positioning is accurate, operation is easy and convenient, the pain and discomfort of the patient in the puncture process can be reduced. By means of accurate puncture operation, damage to surrounding normal tissue can be reduced, and the occurrence risk of complications is reduced.

The invention discloses a directional puncture tool for ultrasound-guided peripheral nerve block anesthesia in the field of medical auxiliary instruments. The directional puncture tool comprises a carrier, a hovering mechanism and a control unit. A collecting mechanism is arranged in the carrier, an adjusting mechanism is arranged on one side of the collecting mechanism, and an anesthesia injection mechanism is arranged on the adjusting mechanism; a resistance sensing mechanism and a locking mechanism are arranged in the anesthesia injection mechanism, the resistance sensing mechanism is used for collecting resistance borne by the anesthesia injection mechanism in the puncture process in real time, and the locking mechanism is used for limiting propelling of the anesthesia injection mechanism; the control unit is used for comparing the resistance with a preset resistance threshold value and controlling operation of the locking mechanism based on a comparison result; the advancing condition of the anesthesia injection mechanism is recognized based on the ultrasonic image, the current tissue level where the anesthesia injection mechanism is located is judged, and a preset resistance threshold value is adjusted to be matched with the current tissue level. The puncture safety can be improved, and the risk of mistaken puncture is reduced.

The application discloses a kind of for ultrasound-guided peripheral nerve block anesthesia directional puncture tool in the field of medical auxiliary instrument, including carrier, hovering mechanism and control unit;Acquisition mechanism is provided in carrier, and one side of acquisition mechanism is provided with adjusting mechanism, and anesthesia injection mechanism is provided on adjusting mechanism;Resistance sensing mechanism and locking mechanism are provided in anesthesia injection mechanism, resistance sensing mechanism is used to real-time acquisition resistance that anesthesia injection mechanism is received during puncture process, locking mechanism is used to limit the advance of anesthesia injection mechanism;Control unit is used to compare resistance with preset resistance threshold value, based on comparison result, the operation of locking mechanism is controlled;And based on ultrasound image, the travel of anesthesia injection mechanism is identified, the tissue level that current anesthesia injection mechanism is located is judged, and preset resistance threshold value is adjusted to match current tissue level.The application can improve the safety of puncture, reduce the risk of mispuncture.

The invention relates to the technical field of nerve block anesthesia, and discloses nerve block anesthesia intelligent auxiliary equipment which comprises a display screen, the rear wall of the display screen is rotationally connected to the top of a second supporting column through a first supporting column, and the bottom of the second supporting column is fixedly connected to the top of a bottom plate. The outer wall of the second supporting column is fixedly connected to one end of a mechanical arm, the other end of the mechanical arm is fixedly connected to one end of a rotating shaft, the other end of the rotating shaft is fixedly connected with an ultrasonic detector, and a mechanical arm control system and an intelligent control unit are arranged in the display screen. An ultrasonic image recognition system is arranged in the ultrasonic detector, and the ultrasonic image recognition system scans a target area. In the invention, the ultrasonic detector can be pressed on the surface of the body of a patient through the mechanical arm, so that the problem of poor anesthesia effect possibly caused by the fact that a doctor needs to hold ultrasonic equipment with one hand and hold a needle with the other hand for anesthesia operation in nerve block anesthesia is solved.

The invention discloses a drug injection device for nerve block anesthesia under ultrasonic guidance. The drug injection device is characterized in that an injection box body is welded and fixed right above a device base, an equipment cover plate is fixed on the outer side of the injection box body through a bolt, an instrument back plate is arranged on the outer side of the injection box body, the upper side and the lower side of the instrument back plate are connected with positioning force arms, a clamping sheet is fixed to the outer side of the positioning force arm through a bolt, a mechanical force arm a is fixed to the outer side of the injection box body through a bolt, a mechanical force arm b is connected to the outer side of the mechanical force arm a through a shaft, the drug injection device comprises an injection back plate, an injection gun body is connected to the position just below the injection back plate, and a guide sliding rod b is connected to the interior of a guide sleeve block in a nested mode. According to the drug injection device for nerve block anesthesia under ultrasonic guidance, by arranging a ball screw and a clamping sheet, the distance between the clamping sheet and a positioning force arm is adjusted according to a telescopic spring, and the distance between the two sets of clamping sheets and the positioning force arms is adjusted according to the size of an ultrasonic guidance module.

The invention relates to the technical field of processing of related medical data of patients, in particular to a postoperative follow-up visit information recording system for local nerve block anesthesia patients. The method comprises the following steps: firstly, obtaining all follow-up record tables and all follow-up record segmented words in the follow-up record tables; further obtaining a record similarity coefficient between adjacent follow-up record tables and a column record similarity coefficient between same columns; then determining a recording mode of each follow-up record segmented word in each follow-up record table in combination with the occurrence frequency of the follow-up record segmented word; and finally, carrying out follow-up recording according to the recording mode of each follow-up record segmented word in each follow-up record table. According to the method, the recording mode is determined by combining the occurrence frequency of each follow-up record segmented word on the basis of the text similarity condition and the emotion information of the follow-up record segmented words between the adjacent follow-up processes, and compared with an existing method, redundancy can be reduced in the repeated post-operation follow-up information input process of the local nerve block anesthesia patient; therefore, the recording effect of the follow-up visit information is improved.

The invention discloses a positioning device for a nerve blocking anesthesia needle. The positioning device is characterized in that a fixed base, an adhesive sticker, a movable base, a movable support, a lifting positioning bolt, a horizontal positioning bolt, locking nuts and a needle handle fixing clamp are arranged, wherein the adhesive sticker is arranged on the lower end face of the fixed base, a horizontal sliding way is arranged on the fixed base, the lower end of the movable base is connected with the horizontal sliding way in a sliding mode, the movable base is locked on the fixed base in the way that the horizontal positioning bolt penetrates through the movable base, the upper end of the movable base is perpendicularly and fixedly connected with the movable support, a lifting sliding way is perpendicularly arranged on the movable support, the lifting positioning bolt penetrates through the lifting sliding way on the movable support, one end of the lifting positioning bolt is fixedly connected with the needle handle fixing clamp, the needle handle fixing clamp is fixed to the movable support through the locking nuts, and the upper end of the needle handle fixing clamp is buckled with a cover plate. The positioning device has the advantages of being novel in structure, convenient to operate, firm in fixation, capable of saving time and labor and the like.

The invention discloses a nerve block anesthesia medicine injection device under ultrasonic guidance. The device comprises a medicine tube, a handle, a containing groove, an end, a connecting sleeve, a catheter, a puncture needle, a fixing head, a connecting tube, a connector, a rubber ring, a fixing tube, a guide rail, a sealing ring, a T-shaped groove, a binding face, a counter bore, a guide groove, a fixing block, a spring, a sealing plate, a rotary knob, a first motor, a lead screw, a movable block, a shifting block, a limiting plate, an opening, a sealing plug, a piston rod, a piston handle, clamping teeth, a mounting base, a gear shaft, a shell, a second motor and a belt wheel. The device comprises a belt, a control switch, a notch, an extension block, a screw, a guide plate and a limiting block. The anesthetic injection device has the beneficial effects that stable puncture can be achieved in cooperation with ultrasonic guidance, meanwhile, the puncture part can be adjusted, the nerve injury problem is avoided, the practicability of the anesthetic injection device is improved, quantitative anesthetic conveying can be achieved, operation is easy, control is easy, and the operation intensity of medical staff is reduced.

The invention discloses an enhanced imaging puncture needle for ultrasound-guided nerve block, comprising an outer needle, one end of the outer needle is provided with a cutting edge, the other end of the outer needle is fixedly connected with a needle seat, the outer needle includes a shell, and the inside of the shell is eccentric The inner shell is fixed, and the fixed connection between the inner shell and the outer shell is provided with a cover. There is a cavity between the inner shell and the outer shell, and the cavity is filled with gas. The outer wall of the inner shell is provided with a number of reflectors in a circumferential array near the end of the cutting edge. slot, and an inner needle is detachably connected to the inner shell, and the length of the inner needle is greater than the sum of the lengths of the outer needle and the needle seat. In the present invention, by filling the cavity with gas with high reflectivity to ultrasonic waves, and setting up reflective grooves on the surface of the inner shell, the reflectivity to ultrasonic waves is improved, the development is clearer under ultrasonic waves, and the probability of accidentally injuring surrounding organs by the puncture needle is reduced. Improve the accuracy of puncture administration, improve the effect of nerve block anesthesia, and improve the success rate of surgery; set the inner needle, which can be used for puncture sampling and minimally invasive surgery, increasing the scope of application of the puncture needle.