46 results about "Anesthesia needle" patented technology

According to the puncture assembly for the trigeminal nerve meniscus balloon compression operation under local anesthesia, firstly, an anesthetic needle is designed to be of a detachable structure and can be arranged in a puncture needle in a sliding and sleeving mode, and precise local anesthesia is conducted firstly in the puncture process; then the same puncture channel is used for carrying out subsequent balloon catheter insertion operation; and secondly, the balloon is fixedly arranged at the front end of the balloon catheter and is connected with the balloon dilatation pressure pump, so that moderate compression on the trigeminal nerve meniscus can be realized by accurately controlling the filling degree of the balloon in the operation process. Meanwhile, the pressure pump has a real-time monitoring function on the internal pressure of the balloon, so that an important reference basis is provided for doctors, the safety and effectiveness of surgical operation are ensured, and nerve injury or other negative effects caused by overhigh pressure of the balloon are avoided.

1. The name of the design product: medical anesthetic needle. 2. The use of the design product: the design product is used as a puncture device for medical anesthesia and an injection channel for anesthetic. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention belongs to the technical field of medical equipment, and particularly relates to an anesthetic needle inserting device for the anesthesiology department, the anesthetic needle inserting device comprises a control assembly, the control assembly is sequentially provided with a pushing assembly, a limiting assembly and a clamping assembly, the pushing assembly comprises a pushing frame, the pushing frame is provided with a sliding groove, one side of the pushing frame is fixedly connected with a clamping plate, and the clamping plate is fixedly connected with the limiting assembly. The clamping assembly comprises a clamping block, one side of the clamping block is fixedly connected with a sliding rod, one end of the sliding rod is fixedly connected with a limiting rod, an injector is clamped in the clamping block, the position of the limiting plate is accurately adjusted, the needle inserting length of the injector can be controlled, an anesthesia point can be conveniently and more accurately positioned in the anesthesia process, and the anesthesia accuracy is improved. The anesthesia effect is improved, and the problem that the anesthesia effect is poor due to the fact that the needle inserting depths are inconsistent is solved.

The invention discloses a bone marrow puncture extraction device for leukemia patients. The bone marrow puncture extraction device comprises a supporting assembly and a puncture assembly. The supporting assembly comprises a supporting plate and a lifting driving device, and the lifting driving device is installed on the supporting plate; the puncture assembly is installed on the supporting plate and comprises a lifting table, an anesthetic needle cylinder, a bone marrow needle cylinder, a reversing valve and a puncture needle. The lifting table is connected with an output part of the lifting driving device so as to be close to or away from the supporting plate; the anesthetic needle cylinder and the bone marrow needle cylinder are respectively arranged on the lifting platform and are supported by the lifting platform; the reversing valve is provided with a first valve port, a second valve port, a third valve port and a valve element, the anesthetic needle cylinder is connected with the first valve port, the bone marrow needle cylinder is connected with the second valve port, the puncture needle is connected with the third valve port, and the third valve port is selectively communicated with the first valve port or the second valve port through the valve element. According to the bone marrow puncture extraction device for the leukemia patient, the mechanization degree can be improved, secondary puncture is avoided, and therefore the pain of the patient is relieved.

The utility model relates to the technical field of dentist instrument storage boxes. The multifunctional dental instrument storage box comprises a box body, an adjusting structure is arranged in the box body, a lock catch is fixedly connected to the middle position of the outer surface of one side of the upper end of the box body, a box cover is hinged to the outer surface of one side of the top end of the box body, and a rapid taking structure is arranged in the box cover. And a locking plate is hinged to the middle position of the outer surface of one side of the box cover. The placing box is inserted in the gap between the mounting frame and the box cover, and is positioned in the mounting frame through the matching of the hinge column, the triangular clamping block and the torsional spring, so that the anesthetic needle can be prevented from being inverted or falling off when the anesthetic needle is moved or opened, and the anesthetic needle can be conveniently taken and used when the anesthetic needle needs to be taken. An opening and closing plate can be opened through hinge rotation, at the moment, medical staff can take anesthetic needles in a containing box through a taking hole, and the practicability of the equipment is improved to a certain degree.

The invention relates to a large-batch dispensing device for anesthetic needle valve element seats. The large-batch dispensing device comprises a mounting platform, a positioning mechanism, a moving mechanism and a dispensing assembly, wherein the positioning mechanism, the moving mechanism and the dispensing assembly are arranged on the mounting platform; the positioning mechanism is used for positioning a plurality of valve core seats; the moving mechanism comprises a moving assembly and a moving seat, the moving seat is mounted on the moving assembly, and the moving assembly is used for driving the moving seat to move freely; the dispensing assembly comprises a supporting plate, a pneumatic element and a plurality of glue storage barrels; the supporting plate is detachably mounted on the moving seat, a plurality of mounting holes are formed in the supporting plate, and the plurality of glue storage cylinders are mounted in the plurality of mounting holes in a one-to-one correspondence manner; the first ends of the multiple glue storage barrels are all provided with glue dispensing needle tubes used for dispensing glue into the valve element base, and the second ends of the multiple glue storage barrels are all communicated with the pneumatic element. When the pneumatic element injects gas into the glue storage barrel, glue is injected into the valve element seat from the glue dispensing needle tube, and when the pneumatic element extracts the gas in the glue storage barrel, the glue is adsorbed into the glue storage barrel. The method has the effect of improving the production efficiency and the yield of the lining core seat.

The invention discloses a high-strength racing machine frame which comprises a base plate, and a flight control plate is arranged above the base plate. According to the racing machine frame, the four machine arms made of the T800 carbon fiber materials are adopted, the thickness of the machine arms is 6 mm, the flight speed of the racing machine is not reduced while the light weight is sacrificed, the racing machine can be used as a police device, the strength quality of the whole machine is improved, the machine frame can collide with the ground in the full-speed state, the integrity of the machine frame can be guaranteed, and the service life of the racing machine is prolonged. A replaceable needle body is installed on the racing machine, the replaceable needle body is a breaking needle and used for directly impacting glass at a high speed to break the glass, the replaceable needle body can also be well applied to police, the requirements of workers are met, the replaceable needle body can also be an anesthesia needle head, and the scene is that when crazy cattle or large animals rush into streets, the working efficiency is greatly improved. The traditional shooting has high danger, but the crossing machine can carry an anesthesia needle to anesthetize a crazy animal, and the crossing machine is very high in flexibility.

The utility model provides an ultrasonic probe support, which relates to the technical field of medical auxiliary appliances and comprises a support body, the support body consists of a first shell and a second shell, the other side of the second shell is fixedly connected with a connecting seat, the back of the connecting seat is provided with a rotating seat, the back of the rotating seat is provided with a connecting rod, and the connecting rod is fixedly connected with the rotating seat. A lamp holder is arranged on the front face of the connecting base, an illuminating lamp is arranged at the bottom of the lamp holder, an adjusting bolt is in threaded connection with the front face of the first shell, a clamping block is arranged at the inner end of the first shell, light beams are emitted through the illuminating lamp, a straight line is displayed on the skin, and the straight line and the length of the probe head are located on the same straight line. A doctor only needs to judge the puncturing direction of the anesthetic needle through the straight line formed on the skin surface by the light beam, the anesthetic needle and the probe are not structurally bound, and when the doctor needs to adjust the puncturing position or direction, only the anesthetic needle needs to be adjusted, and simultaneous adjustment is not needed.

The application discloses a handle type intelligent puncture instrument for intravertebral anesthesia, which comprises a shell, an anesthesia needle, a guide needle and a data processor, a fixing block for fixing the insertion end of the anesthesia needle is arranged at the front end of the shell, a base is fixed in the shell, a reverse L-shaped support is fixed at the front end of the base, a lead screw is arranged at the side of the reverse L-shaped support, a servo motor is arranged on the lead screw, a long slot is arranged on the reverse L-shaped support, the top of the servo motor passes through the slot and is sequentially connected with a first U-shaped clamping groove and a second U-shaped clamping groove which are respectively used for fixing the tail end of the anesthesia needle and the tail end of the guide needle, a ring-shaped pressure sensor is arranged in each of the first U-shaped clamping groove and the second U-shaped clamping groove, and the ring-shaped pressure sensor is connected with the data processor through a wire. The application has the advantages of reasonable design, convenient use, effective reduction of puncture difficulty, improvement of puncture success rate, real-time reflection of the needle insertion depth in the puncture process, avoidance of the risk of damaging nerve tissues, stable adsorption and improvement of work efficiency.

The anesthetic needle puncture auxiliary tool based on the disposable syringe comprises a shell and an air pressure sensor, a syringe driving mechanism is arranged on the shell, the syringe driving mechanism can be detachably connected with a syringe outside the shell, and the syringe driving mechanism drives a piston of the syringe outside the shell to move. The outer side face of the outer shell or the outer shell extends outwards through an extension structure to be provided with an air pipe connector communicated with an air pressure sensor, and the air pipe connector can be connected with the outer shell puncture gas pipeline. And the air pressure sensor detects the air pressure change in the puncture gas pipeline outside the shell. The puncture needle is inflated and / or sucked through the injector, the air pressure sensor detects the air pressure change of the puncture needle, whether the puncture needle reaches the target position in the target object or not is judged, the structure is simple, and operation is convenient.

The utility model belongs to the technical field of biomedical engineering, and particularly relates to an anesthetic needle marking device for realizing ultrasonic development positioning, which comprises a knife pressing plate, an inner support plate, an outer support plate, a rotary sleeve and a shell, marking dents are carved on the anesthetic needle after inner side knife pressing tips of a plurality of knife pressing plates which are the same in shape and structure and are centrosymmetric are tightened; a knife pressing positioning shaft hole is formed in the inner corner of one vertex angle of the knife pressing plate, and the knife pressing positioning shaft penetrates through the knife pressing positioning shaft hole; a knife pressing plate driving shaft hole is formed in the inner corner of the other vertex angle of the knife pressing plate, and the knife pressing driving shaft penetrates through the knife pressing plate driving shaft hole; the pressure driving shaft is inserted into one end of the connecting rod, the other end of the connecting rod is connected with the sleeve connecting shaft through hole, the sleeve connecting shaft sleeves the rotating sleeve, and the two ends of the sleeve connecting shaft are inserted into the shell. According to the utility model, the total reflection dents are engraved on the conventional common anesthetic needle through mechanical positioning and special engraving methods, and ultrasonic reflection signals are enhanced, so that developing and positioning under ultrasound are realized.

The utility model relates to the technical field of anesthesia boosting instruments, and discloses a local anesthesia boosting instrument capable of controlling the medicine pushing amount, which comprises a pushing cylinder, a thread area is arranged on the outer wall of the left end of the pushing cylinder, a thread ring is in threaded connection with the outside of the thread area, and movable grooves are formed in the upper side and the lower side of the left end of the pushing cylinder. A shell is fixedly connected to the right end of the pushing cylinder, a motor is fixedly connected to the exterior of the shell, an inner threaded sleeve is fixedly connected to a driving shaft of the motor, and a threaded rod is in threaded connection with the interior of the left end of the inner threaded sleeve. According to the anesthetic needle fixing device, the storage groove is rotated to be aligned with the movable ball, and at the moment, the fixed cylinder and the pushing cylinder can be mounted and dismounted, so that the anesthetic needle is convenient to replace, the threaded ring is matched with the limiting block, the injection metering of the anesthetic needle and the movement of the nut block and the connecting rod can be controlled, and the anesthetic needle in the middle is clamped by the clamping plates on the two sides; the anesthetic needle fixing device is simple and quick to operate.

The invention discloses an injection positioning device for anesthesia in a biomedical obstetrical operation, and relates to the technical field of anesthesia equipment. The injection positioning device for anesthesia in the biomedical obstetrical surgery comprises a positioning bin, a positioning rod, a positioning rod and a positioning rod, a protective rubber pad is assembled on the side face of the positioning bin, and a passing groove is formed in the side face of the positioning bin; a penetrating through rod is inserted into the side face of the positioning bin, and one end of the through rod is fixedly connected with an adjusting hand wheel. According to the injection positioning device for anesthesia in the biomedical obstetrical operation, the positioning bin is placed on an operating table, a protection rubber pad is attached to the back of a user, and the positioning bin is matched with an adjusting hand wheel, a passing rod, a first gear, a rotating rod, a gear ring, a ratchet wheel, a second gear, an arc-shaped toothed rod, an anesthetic needle mounting base, a first hydraulic bin, a vertical toothed rod, a hydraulic hose, a second hydraulic bin, an ejector rod, a first spring and a pawl; the anesthetic needle can be firstly moved to a designated position and then slowly pierces into the body of a user, so that the using accuracy of the anesthetic needle is improved.

The utility model belongs to the technical field of medical instruments for the anesthesiology department, and particularly relates to a novel anesthetic needle. A novel anesthetic needle comprises a minimally invasive anesthetic apparatus, the minimally invasive anesthetic apparatus comprises a base body, and a cavity is formed in the base body; the number of the needle heads is multiple, the needle heads are tubular, the needle heads are arranged on the base body, and the needle heads are communicated with the cavity of the base body; the connecting tube and the needle head are arranged at the two ends of the base body respectively, the connecting tube is of a hollow structure with the two ends open, the connecting tube is communicated with a cavity of the base body, and the connecting tube is detachably connected to a nipple of the needle cylinder. The connecting pipe of the minimally invasive anesthesia apparatus is directly connected to the nipple of the needle cylinder, the minimally invasive anesthesia apparatus is supported through the needle cylinder during local infiltration anesthesia, and the supporting effect is good; besides, the minimally invasive anesthesia apparatus is directly connected to the nipple of the needle cylinder, the distance between the minimally invasive anesthesia apparatus and a to-be-anesthetized part is relatively small when an operator holds the minimally invasive anesthesia apparatus, and the operation difficulty of local infiltration anesthesia is reduced.

The present application relates to the technical field of epidural anesthesia needle placement auxiliary, in particular to an auxiliary device for epidural anesthesia needle placement, which comprises a puncture needle composed of a handle, a needle seat and a needle tube, sliding grooves are opened on both sides of the handle along the length direction, a rectangular ring is slidingly matched with the outer wall of the handle along the circumference direction, the inner wall of the rectangular ring is fixedly connected with a plurality of sliders corresponding to the sliding grooves, a conical ring is arranged on the side of the needle seat away from the handle, the side of the conical ring close to the needle seat is fixedly connected with telescopic cylinders symmetrically, the telescopic ends of the telescopic cylinders pass through the needle seat and are fixedly connected with the side walls of the corresponding sliders, the sliders are each provided with a fixing assembly, and the handle is provided with an unlocking assembly. The conical ring with a silica gel ring is extended to form a stable support surface when the needle is withdrawn, the hand shaking transverse force is offset, the conical ring is stored and released by cooperating with the unlocking and fixing assemblies, the problems of easy deviation and rotation of manual needle withdrawal and damage to tissues are solved, and the needle insertion field of view and positioning are not disturbed.

The invention discloses an intraspinal anesthetic needle puncture virtuality and reality combined teaching system, which relates to the technical field of medical teaching evaluation, and comprises the following steps of: 1, compiling an index definition library, a Chinese word matrix and a report template into a rule net version through unit and dimensional reasoning and equation and interval checking, and carrying out property test; 2, aligning and normalizing the multi-source sequence and the event according to a conversion chain, and packaging into a fact package containing a source, a formula and a unit; 3, generating a rendering plan based on the fact package, preposing word use and display precision, and pre-scoring; 4, constrained generation and reverse checking are carried out, minimum correction is carried out under the condition that a fact numerical value is not changed, and a consistency text and a final consistency score are output; 5, signing and issuing a gating and embedding a pedigree and a signature; in case of data, threshold or template change, calculating a change influence domain, re-rendering the influenced sentences, and outputting differences and auditing; consistency, traceability and verifiability of facts and characters are realized.

The invention relates to the technical field of medical instruments, in particular to a puncture anesthesia needle tube. The anesthetic needle comprises an anesthetic needle body, the anesthetic needle body comprises a needle tube body, a piston is slidably connected into the needle tube body, a base is fixedly arranged on the periphery of the end, away from the piston, of the needle tube body, and a pair of pushing bolts is fixedly arranged on the outer wall of the end, away from the base, of the needle tube body; according to the puncture anesthesia needle tube, the positioning protection mechanism is used for determining the to-be-punctured position, the handheld mechanism is used for adjusting the depth of the part, to be punctured into the body of a patient, of the needle head, and the locking mechanism is used for fixing the relative position of the sliding base and the needle tube body; after the locking mechanism relieves the fixation of the relative positions of the sliding seat and the needle tube body, the needle tube body slides towards the interior of the sliding seat to drive the needle head to slide in the positioning protection mechanism, so that the needle head pierces a part determined by the positioning protection mechanism, and deviation of a punctured part caused by experience difference of medical staff or interference of external factors is prevented.

1. Name of the designed product: Anesthesia puncture kit. 2. Use of the designed product: The designed product is used to hold medical accessories required for anesthesia puncture. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model provides an anesthetic tray for anesthesia belongs to the field of anesthetic apparatus, including the outer disc, the baffle is arranged in the outer disc, the inner disc is arranged in the upper and lower two sides in the outer disc from left to right, the needle tube fixed groove is opened in the inner disc, the left and right sides of inner disc are provided with the waist, the recess is provided in the waist, the positioning slot is opened respectively in the middle of the front and back two ends of inner disc, the magnet is fixedly connected in the positioning slot. The utility model discloses the cooperation of the outer disc and the inner disc setting, can be limited to the processing of the anesthetic needle before anesthesia, and can fix the anesthetic needle of different sizes in the specific area, and the anesthetist can store according to the habit before using, and it is more convenient to take, and through the design of the waist and the trailing edge, the operation of taking the inner disc is simpler, secondly, the inner disc can be selected according to the different number of different sizes of anesthetic needle used each time, and the inner disc temporarily not used is stored in the lower part of the outer disc.

The anesthetic needle comprises a needle cylinder, a needle head and a push rod, a driving sleeve is rotatably mounted at the top end of the needle cylinder, internal threads are arranged on the inner wall of the driving sleeve, external threads matched with the internal threads are arranged on the outer wall of the push rod, a second mounting piece is mounted at the end of the push rod, and a quantifying rod is mounted at the bottom end of the second mounting piece. The outer wall of the quantifying rod is provided with multiple groups of scales at equal intervals and is rotatably provided with a control block. Through the threaded fit of the push rod and the driving sleeve and the arrangement of the quantitative rod and the control block, the precise control over liquid medicine extraction and injection can be achieved, medical staff can accurately adjust the position of the push rod according to needs, and therefore the medicine amount is controlled, and negative effects caused by too much or too little medicine amount are avoided; meanwhile, the anesthetic needle can extract liquid medicine by one hand, hold the needle cylinder by one hand and rotate the driving sleeve by the thumb to push the push rod, so that the advantages are obvious in emergency and space-limited environments, time is saved, and the treatment efficiency is improved.

The utility model relates to the technical field of anesthetic needles, and discloses a low-damage easy-to-puncture subarachnoid space anesthetic needle, which comprises a lumbar anesthesia needle main body, the lumbar anesthesia needle main body comprises a main needle body and a needle tip, the needle diameter of the main needle body ranges from 0.5 mm to 0.8 mm, the needle diameter of the main needle body is 0.7 mm, the length of the main needle body is 50mm, the length of the needle tip is 5mm, the needle diameter of the needle tip is 0.3 mm, and the needle tip of the main needle body is 0.5 mm. The needle diameter of the needle tip ranges from 0.3 mm to 0.5 mm, and the needle tip is designed to be provided with an inclined opening. On the basis of a traditional lumbar anesthesia needle, the needle point part of the lumbar anesthesia needle is improved, so that the needle point part is specially refined, the advantages of the traditional lumbar anesthesia needle and the specially-refined lumbar anesthesia needle are combined, the puncture smoothness can be guaranteed, leakage of cerebrospinal fluid can be reduced, and the occurrence rate of postoperative anesthesia headache can be prevented.

1. The name of the design product: anesthetic puncture needle. 2. The use of the design product: for anesthetic puncture. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

1. The name of the design product: anesthetic puncture needle. 2. The use of the design product: for anesthetic puncture needle. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses an anesthesia needle and a use method. The anesthesia needle comprises an upper cover; the top opening of the lower cover covers the bottom opening of the upper cover, and the internal space of the lower cover and the bottom opening is a needle head accommodating cavity; an injection needle is arranged on a needle head base of the needle head body, the needle head body is arranged in the needle head containing cavity, the needle head base and the bottom end face of the needle head containing cavity are arranged in a spaced mode, the space of the needle head base and the bottom end face of the needle head containing cavity is a containing cavity used for containing the cold compress block, the cold compress block is formed by freezing cold compress liquid in the containing cavity, and cold compress block ice adheres to the needle head base; an isolation cylinder is arranged on the bottom end face of the needle head containing cavity, the top of the isolation cylinder stretches into a positioning groove in the bottom end face of the needle head base, and a needle point of the injection needle stretches into the isolation cylinder through an upper cylinder opening of the isolation cylinder so that an anesthetic cavity with an opening can be isolated on the bottom end face of the cold compress block. The needle head can reduce the pain feeling when the injection needle pierces into the skin in the modes of pressing, ice compressing, guiding the injection needle to pierce slowly and the like.

The utility model provides an interspinous ligament puncture single-time spinal anesthesia guide needle which comprises a handle and a needle tube, the top end of the needle tube is fixedly connected with the bottom end of the handle, and a chamfer hole is formed in the inner side of the top end of the needle tube; and a plurality of groups of scale marks are arranged on the outer side of the needle tube at equal intervals. The chamfering hole is formed in the inner side of the top end of the needle tube, so that the lumbar anesthesia needle can be conveniently, quickly and smoothly inserted and is not prone to being blocked during use, the insertion efficiency of the lumbar anesthesia needle can be effectively improved, and the operation difficulty can be effectively reduced; the multiple sets of scale marks are arranged on the outer side of the needle tube, so that the puncture depth of the needle tube can be conveniently and rapidly measured during puncture, medical staff can conveniently know the puncture depth in time, and the operation accuracy is improved.

The invention provides a medical antibacterial coating spraying device, and relates to the technical field of medical instruments, the medical antibacterial coating spraying device comprises a needle-shaped needle tube body and a cylindrical needle seat body, arc-shaped clamping seats are symmetrically mounted on the periphery of the needle seat body, square rotating seats are mounted on the back surfaces of the clamping seats, and the rotating seats are symmetrically mounted on the needle tube body. A first driving motor is installed on the back face of the rotating base, the output end of the first driving motor is fixedly connected with the rotating base, a rectangular spraying base is installed on the periphery of the first driving motor, a spraying chamber is formed in the position, located on the periphery of the needle tube body, of the top of the spraying base, and a tubular flow dividing tube is fixedly connected to the right side wall of the spraying chamber; a plurality of atomizing nozzles are fixedly connected to the positions, close to the left side face, of the periphery of the flow dividing pipe, and the atomizing nozzles are fixedly connected with the flow dividing pipe. Through the design, an antibacterial coating can be effectively sprayed to the anesthetic needle, and the antibacterial coating can be effectively and uniformly sprayed to the anesthetic needle, so that the antibacterial effect is guaranteed.

The present invention discloses an ultrasonic-guided synchronous positioning system for intraspinal anesthesia, which comprises the following components: an ultrasonic component, including an ultrasonic probe and an ultrasonic positioning component, where the ultrasonic probe is used to obtain ultrasonic images, and the support feet on the ultrasonic positioning component are switched from a retracted state to an extended state, so as to position the placement state of the ultrasonic probe at this time in a multi-point support manner; a puncture component, including an anesthesia needle and a puncture positioning component, and the support state of the support feet on the puncture positioning component is synchronized with that of the support feet on the ultrasonic positioning component, so that the anesthesia needle can be placed at the position where the ultrasonic probe has been placed according to the placement state of the ultrasonic probe. The operation of the present invention is simple, reduces the deviation in the operation, and is beneficial to ensuring the accuracy of puncture.

The utility model provides a multipoint synchronous anesthetic needle for the anesthesiology department, and relates to the field of anesthetic needles. The syringe needles can be wrapped by the arranged protective cylinders, the protective cylinders are used for protecting the syringe needles, and therefore the probability that the syringe needles hurt people in the storage process is effectively reduced, and the probability that the syringe needles are bent due to collision is reduced; a movable pin capable of sliding in the sliding groove, the connecting groove and the clamping groove is arranged on the inner wall of the protective cylinder, the protective cylinder can move on the surface of the injection needle cylinder conveniently, the movable protective cylinder can penetrate out of the protective cylinder from the inner side of the through hole to complete injection during injection, the clamping groove is further formed in the outer side of the injection needle cylinder, and therefore the protective cylinder can move conveniently. A fixing piece is arranged on the outer side of the protective cylinder, and the protective cylinder is fixed during injection through clamping of a limiting clamping block on the fixing piece and a clamping groove.

1. The name of the design product: medical anesthetic needle. 2. The use of the design product: puncture device for medical anesthesia and injection channel of anesthetic. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.