102 results about "Injections methods" patented technology

The invention relates to an injection system, an injection method and a control method for medical capillary polishing, and the injection system comprises a first liquid storage pipe used for storing magnetorheological fluid; the first three-way connector is connected with the first liquid storage tank through a first pipeline; the first pump is connected with the first three-way joint through a second pipeline; the second pipeline comprises a vertical pipe body which is partially vertically arranged, and the space between the first pump and the vertical pipe body is filled with a gas section; the capillary tube is connected with the first three-way connector through a third pipeline; the first pinch valve is installed on the first pipeline and the third pipeline and used for cutting off the first pipeline or the third pipeline. The particle settling volume in the injection system can be reduced, the machining precision is improved, and the service life of equipment is prolonged.

The utility model discloses a well structure for injecting a suspended state repairing agent. The well structure comprises an injection well, a lower end injection pipeline and an upper end injection pipeline, wherein the lower end injection pipeline downwards penetrates into the injection well from the top of the injection well; the upper end injection pipeline is arranged on the side wall of one side of the top of the injection well; and a Y-shaped tee joint is arranged at the bottom of the lower end injection pipeline. By adopting the well structure, the migration and distribution uniformity of the suspended state repairing agent is remarkably improved, the reaction efficiency with pollutants is enhanced, meanwhile, the repairing cost is reduced, the construction period is shortened, and the repairing quality is ensured. Meanwhile, the problem that in a traditional injection method, when the repair depth exceeds the injection range or the repair medium is bed rock, it is difficult to inject suspended-state repair agents is solved.

A continuous micro-dose administration apparatus, comprising a needle apparatus (5), a drug storage apparatus (4), a piston push rod apparatus (3), a force accumulating apparatus (2), an accumulated force release apparatus (1), and a control apparatus (6). Under the action of the control apparatus (6), the accumulated force release apparatus (1) releases a specified piston stroke, the force accumulating apparatus (2) pushes the piston push rod apparatus (3) to move towards the drug storage apparatus (4) by the specified piston stroke, and a drug liquid in the drug storage apparatus (4) is discharged through the needle apparatus (5). The force accumulating apparatus (2) serves as a power source, a piston body (31) is pushed in a rotating or direct pushing mode, the required number of pulses is calculated according to the required dose of infusion or the piston movement distance, and the control apparatus (6) accurately controls the accumulated force release apparatus (1) to release the specified piston stroke, thereby helping to improve the accuracy of the dose of administration. A rotary magnetic brake assembly (11) is connected to the piston push rod apparatus (3) by means of a coupling assembly (12) formed by a gear set (121) consisting of a plurality of gears, so that a smaller force of the rotary magnetic brake assembly (11) is used to control a larger force of the force accumulating apparatus (2).

The invention belongs to the technical field of medical instruments, and provides a double-cavity knee joint injection device and method, the double-cavity knee joint injection device comprises a needle cylinder body, the needle cylinder body is provided with a main piston cylinder and at least one auxiliary piston cylinder, the inner cavity of the main piston cylinder and the inner cavity of the auxiliary piston cylinder communicate with each other, and the main piston cylinder and the auxiliary piston cylinder are movably connected with plungers; the needle cylinder body is further provided with a needle head end, an injection needle head is arranged at the needle head end, the main piston cylinder is in one-way communication with the injection needle head through a one-way valve, the one-way valve is in one-way communication towards the direction of the injection needle head, and the communication pressure of the one-way valve is adjustable. When an injection needle is inserted into non-target injection tissue, such as muscle, of a patient, the injection resistance of the muscle tissue is large, a one-way valve cannot be conducted in the injection process, so that injection liquid flows into an auxiliary piston cylinder, and a plunger retreats. Therefore, medical staff can conveniently judge whether the injection needle is inserted into a target position or not. And the injection is prevented from being mistakenly injected into other tissues to be wasted.

The application discloses a double-cheek local medicine injector and an injection method thereof, and relates to the technical field of medical treatment.The injector comprises an injection barrel, a liquid outlet barrel connected to the front end of the injection barrel, a connecting barrel sleeved on the periphery of the liquid outlet barrel, an opening of the connecting barrel being attached to one side of the injection barrel, a needle connected to one end of the connecting barrel of the injection barrel, a push rod slidingly fitted in the hollow part of the injection barrel, a piston head attached to the inside of the injection barrel being connected to the side of the push rod facing the liquid outlet barrel, and a clamping mechanism arranged on the periphery of the injection barrel for clamping the connecting barrel.The clamping mechanism can be used to quickly disassemble the needle, and the medical staff does not need to laboriously pull out the needle, and the medical staff does not need to put the hand into the oral cavity of the patient during the process of pulling out the needle, the connecting barrel can be detached by directly rotating the clamping mechanism at the edge of the needle, and the medical staff is facilitated to replace the injection barrel.

The invention relates to a same-well extraction and irrigation method and system for an L-shaped well. The system comprises at least one well group, each well group at least comprises two L-shaped wells arranged at intervals, and well pipes are arranged in the L-shaped wells; the at least one heat compensation system is matched with the well group; the control device is arranged corresponding to the well group, the heat supply input end is connected with the water outlet end of the L-shaped well, the heat supply output end is connected with a lower-stage unit, the heat compensation input end is connected with the heat compensation system, the heat compensation output end is connected with the well pipe, and the control device is configured to decide the working mode of the L-shaped well in the same group and the regulation and control state of the well pipe based on the heat supply output end and the water outlet temperature of each well. The method specifically comprises the steps of judging the working mode and the recovery mode of the L-shaped well, selecting the recovery mode and adjusting the water outlet flow. The collecting modules are arranged at the water outlet ends of the L-shaped wells and the heat supply output end of the control device. Through well group binding, real-time monitoring and intelligent regulation and control, parallel heat collection and recovery are achieved, and heat supply continuity and energy recycling are guaranteed.

A method for injecting a therapeutic agent into a patient's skin or mucosa. The method uses a vial containing a therapeutic agent and a syringe containing a diluent comprising an aqueous solution. Attach a closed system drug transfer (CSDT) device to the syringe. Attach the CSDT device to the vial. Transfer the diluent from the syringe into the vial through the CSDT. Mix the diluent and the therapeutic agent to make a therapeutic agent solution mixture. Fill the syringe with the therapeutic agent solution mixture. The concentration of the therapeutic agent in the therapeutic agent solution mixture is ≤ 5 mg / ml. Inject the therapeutic agent solution mixture into skin or mucosa of the patient. Also disclosed are other injection methods and injection kits.

The invention belongs to the technical field of medical ultrasonic diagnosis auxiliary equipment, and discloses an electric right heart acoustic radiography foaming device which comprises a device body, the device body comprises a base, a mounting plate is fixedly arranged on the rear side of the base, a driving assembly is arranged on the front side of the mounting plate, and the driving assembly comprises fixing frames fixed to the upper side and the right side of the mounting plate; a stepping motor is fixedly arranged at the top of the fixing frame, a ball screw is fixedly arranged at the tail end of a main shaft of the stepping motor, a sliding block is spirally arranged on the outer side of the ball screw in a sleeving mode, and a connecting rod is fixedly arranged at the bottom of the sliding block, so that accurate controllability of power transmission and visual adjustment of parameters in the contrast agent injection process are achieved; specifically, key parameters such as injection speed and dosage can be accurately set through the operation panel, a traditional manual injection mode is replaced, and the stability of the foaming effect of the contrast agent is guaranteed.

The present invention relates to an automatic injection device, and the automatic injection device, which administers a medicinal solution after inserting a multi-needle equipped with a plurality of injection needles into a skin at a vacuum pressure, includes: a suction motor which generates the vacuum pressure; a current detector which is provided in the suction motor to detect a current generated in the suction motor; a control unit which controls the vacuum pressure; and an air flow sensor which detects an extent in which air is sucked, wherein the vacuum pressure varies depending on the value of the current detected by the current detector and the amount of air of the air flow sensor.

The invention discloses a needleless injection device for tumor drug injection and an injection method of the needleless injection device. The needleless injection device comprises an injection mechanism and an atomization mechanism arranged below the injection mechanism. The injection mechanism comprises an outer shell, a pushing assembly arranged on the inner side of the outer shell and a plurality of power sources arranged at the bottom of the outer shell. The power source is mainly used for providing power for the device. The pushing assembly is mainly used for pushing high-speed injection of medicine. The atomization mechanism comprises a medicine kettle, an atomization piece fixedly connected to the interior of the medicine kettle and a negative pressure piece arranged on one side of the atomization piece. The medicine pot is in threaded connection with the bottom of the outer shell, the negative-pressure part is arranged on the atomization part, and the bottom of the negative-pressure part is fixedly connected with a micromotor; therefore, the safety, the convenience and the comfort degree of medicine delivery are improved.

The invention provides an electrotome for operation, relates to the technical field of medical instruments, and realizes the technical scheme of injecting liquid into an electrotome main body by adopting different liquid injection modes in different working states, namely a non-blocking state and a blocking state by arranging a connecting component capable of being rotationally switched between the electrotome main body and an injection device. When the electrotome body is not blocked, a user can rotate the connecting component to a lifting state relative to the injection device, at the moment, liquid can be injected into the electrotome body by manually pushing the injection device, operation is easy and convenient, response is rapid, and the electrotome is suitable for conventional liquid injection scenes; when the electrotome is used, the connecting component can be rotated to the connecting state, the first threaded section on the injection device and the second threaded section on the connecting component form stable threaded connection, at the moment, a user can inject liquid into the electrotome body in a pressurized mode through threaded transmission in a rotating mode, and therefore a blocked part can be effectively dredged.

This invention discloses an injection method for CaHA microsphere products that enhance facial three-dimensionality through multi-layering, relating to the field of cosmetic technology. The method includes: precise injection techniques and area division based on specific needs; and a combination of needle angle, injection depth, layer, and dosage for specific anatomical locations. Specifically designed for Asian facial structures, it provides a strong, naturally integrated solution. By using CaHA microsphere injection products, the following effects can be achieved: Facial volume replenishment: effectively replenishing facial soft tissue atrophy and fat loss caused by aging, skin aging, or genetic factors, restoring facial fullness. It is commonly used to fill sunken areas of the face, such as tear troughs, nasolabial folds, sunken temples, and sunken cheeks.

The application discloses an eye implant injector and an eye implant injection method. The eye implant injector comprises a holding handle, a holding surface on the outside of the holding handle, a hollow inside of the holding handle forming a sliding cavity, a front end port on the front end of the holding handle, the front end port communicating with the sliding cavity, a sliding body arranged in the sliding cavity of the holding handle and in sliding cooperation with the sliding cavity, an outer catheter, a hollow inside of the outer catheter forming a guide cavity, a rear end of the outer catheter connected with the front end of the holding handle, an injection needle connected with the sliding body, the injection needle passing through the front end port and in sliding cooperation with the guide cavity of the outer catheter, and an end clamp installed on the front end of the injection needle and having at least a first clamp head and a second clamp head capable of being opened and closed with each other. The application can conveniently implant the eye implant, is convenient to operate, and can better guarantee the implantation effect.

The invention relates to the technical field of OCT imaging, and discloses an OCT automatic injection method, an OCT system applied to the OCT automatic injection system and a turbo system, and the method comprises the steps that an injection pump control module of the OCT system generates an injection control instruction and determines operation parameters, or the turbo system generates the injection control instruction and receives the operation parameters of the OCT system; a motor transmission module of the turbo system is connected with an injection pump control module, motor thrust is generated based on an injection control instruction and operation parameters, the motor thrust is applied to an injector through an injection module, and a medium in the injector is injected into a blood vessel; and an imaging control module of the OCT system synchronously controls an imaging device to perform OCT scanning on the blood vessel in the injection process so as to obtain an OCT image. Cooperative interaction control between the OCT system and the turbo system can be achieved, OCT scanning is synchronously completed in the injection process, and it is ensured that the injection speed and dosage are accurate and controllable.

The present invention discloses equipment for realizing modular in-situ soil injection repair by using a digital control system, comprising a carrier and an injection mechanism arranged on the carrier; the injection mechanism can be used to inject medicine into the soil deep underground for repair; during the repair process, the second sleeve in the injection mechanism can be rotated and cooperated with the jacking mechanism to loosen the compacted soil outside the channel drilled by the drill bit, thereby expanding the medicine injection area and accelerating the diffusion of the medicine and the fusion with the soil; at the same time, the first sleeve can protect the second through hole from being blocked, and keep the medicine injection unobstructed, and adopt single-hole continuous dynamic fixed-depth injection, and the medicine injection parameters can be accurately controlled by controlling and optimizing the medicine addition parameters; the small-caliber bottom-up injection method solves the problem of sandwich layer repair, and at the same time has the advantage of maintaining the bearing capacity of the foundation after construction, and the diffusion and injection effect of the medicine can be guaranteed by designing air, medicine nozzles and drilling tools.

This invention provides a continuous micro-dose delivery device and injection method, including a needle device, a drug storage device, a piston pusher device, a power storage device, a power release device, and a control device. Under the action of the control device, the power release device releases a specified piston stroke, and the power storage device pushes the piston pusher device to move a specified piston stroke into the drug storage device, through which the drug solution in the drug storage device is discharged via the needle device. Using the power storage device as a power source, the piston is driven by rotation or direct push. The required number of pulses is calculated based on the dosage to be infused or the distance the piston travels, and the control device precisely controls the power release device to release the specified piston stroke, thus improving the accuracy of the drug delivery dosage. A coupling assembly consisting of multiple gears connects the rotary magnetic brake assembly and the piston pusher device, enabling the rotary magnetic brake assembly to control a larger force from the power storage device with a smaller force.

The utility model provides a nitrogen injection structure which comprises a nitrogen injection pipeline, nitrogen in the nitrogen injection pipeline is injected from the shielding piece side of a goaf to the area, close to one side of the shielding piece, of the goaf, and then the nitrogen in the area, close to one side of the shielding piece, of the goaf is gradually diffused to the area, close to one side of a working face, of the goaf. Compared with a nitrogen injection mode in the prior art, the nitrogen in the nitrogen injection pipeline is injected into the area, close to one side of the shielding piece, of the goaf, and the nitrogen is not prone to escaping to the working face, so that the nitrogen injection effect of the goaf is ideal, the fire preventing and extinguishing effect of the goaf is ideal, and the low-oxygen phenomenon of the working face cannot be caused.

The invention discloses a radiopharmaceutical split charging and injection system and a precise split charging and injection method, and belongs to the field of nuclear medicine split charging and injection. The system comprises a medicine dilution bottle protection mechanism and a subpackage transfer catheter, the split charging and transferring catheter is formed by a plurality of three-way valves connected in series, and the ports of the three-way valves of the split charging and transferring catheter are at least connected with a medicine injector, a diluent extraction tube and an injection tube; the medicine dilution bottle protection mechanism comprises a first activity detector, and a second activity detector is arranged on the outer side of the medicine injector. A radiopharmaceutical detector is arranged on the outer side of the injection tube. Through the arrangement of the first activity detector and the second activity detector, timely detection and re-checking of the concentration of liquid medicine in the medicine split charging process can be achieved, the actual metering of liquid medicine injection can be further checked, the injected liquid medicine is more accurate and more effective, and the clinical injection requirement is greatly met. And the injection process can be qualitatively monitored in real time through the arrangement of the radiopharmaceutical detector, so that the operation convenience and safety are improved.

The application discloses a medical tissue glue modified formula and injection method for treating esophageal varices, and relates to the field of tissue glue; the medical tissue glue modified formula and injection method for treating esophageal varices introduce polyoxyl glycol as a modifier, not only reduce the brittleness and hardness of n-butyl alpha-cyanoacrylate after polymerization, make the formed vascular embolus more flexible, significantly reduce the cutting risk of traditional hard glue block to thin-walled mucosa, thereby reduce the incidence of postoperative glue leakage ulcer and rebleeding; at the same time, polyoxyl glycol itself as a hardener can synergistically damage the vascular endothelium, accelerate thrombosis and vascular fibrosis, and improve the long-term occlusion effect; secondly, the addition of dragon's blood extract or nano-silver and other antibacterial components in the formula can actively inhibit local bacterial colonization, effectively reduce the risk of postoperative sepsis for the clinical pain points of low immunity and easy infection of patients with cirrhosis.

The present invention relates to an autoinjector device which inserts a multineedle having a plurality of injection needles into the skin by a vacuum pressure and then administers a liquid medicine therethrough, the autoinjector device comprising: a suction motor which generates a vacuum pressure; a current detector provided in the suction motor to detect a current generated in the suction motor; a controller which controls the vacuum pressure; and an air flow sensor which detects the degree of air suction, wherein the vacuum pressure varies according to the value of a current detected by the current detector and the flow rate of air of the air flow sensor.

A method for injecting a therapeutic agent into a patient's skin or mucosa. The method uses a vial containing a therapeutic agent and a syringe containing a diluent comprising an aqueous solution. Attach a closed system drug transfer (CSDT) device to the syringe. Attach the CSDT device to the vial. Transfer the diluent from the syringe into the vial through the CSDT. Mix the diluent and the therapeutic agent to make a therapeutic agent solution mixture. Fill the syringe with the therapeutic agent solution mixture. The concentration of the therapeutic agent in the therapeutic agent solution mixture is ≤5 mg / ml. Inject the therapeutic agent solution mixture into skin or mucosa of the patient. Also disclosed are other injection methods and injection kits.

The invention discloses a facial contour lifting method, and belongs to the technical field of medical cosmetology. According to the method, nine key injection points are determined and the quantity ratio is accurately controlled on the basis of Jiayden MD-Codes and Escherre C type injection techniques, and movable rivet points are added according to the face sagging condition. And 9, the contour of the rivet is lifted. High-quality hyaluronic acid is selected and injected into the periosteum or ligament of the face through a specific technique, and the rivet type lifting effect is achieved. A Heart-Inside love face aesthetic system is used as guidance, inner and outer contours are built, and facial highlight and shadow areas are remodeled by referring to makeup skills. Comprehensive face evaluation is carried out before an operation, a specific injection method is adopted during the operation, and careful nursing and effect evaluation adjustment are carried out after the operation. The method achieves personalized facial contour improvement, has the advantages of being minimally invasive, remarkable in effect, durable, stable and the like, can effectively improve the facial aging problem, and meets the beauty requirements of different crowds.

The invention relates to the technical field of medical instruments, in particular to an automatic sample feeding method and device for a sample cup of a blood coagulation analyzer, and the automatic sample feeding device comprises a shell, a cup feeding assembly, a belt releasing assembly, a belt collecting assembly, a sample cup disc, a cup belt seat and a cup belt, the cup feeding assembly comprises a cup feeding seat, a belt pressing wheel, a cup feeding cover plate and a discharging component; when a single sample cup moves to the cup inlet cover plate under the traction of the cup belt, the sample cup on the cup belt is stripped by the cup inlet cover plate; then the tape collecting assembly continues to pull the cup tape, and the cup tape drives the subsequent sample cup and the stripped sample cup to move towards the outlet along the sample cup channel; in the process, due to the fact that the cup belt and the sample cup material have elasticity and errors possibly exist in the actual traction stroke, when the sample cup cannot completely enter the connection position on the discharging component, the guide face can guide the side edge of the cup body to the correct path, displacement deviation generated by elastic deformation is compensated, it is guaranteed that the sample cup smoothly and completely enters the next station, and the sample cup is prevented from being damaged. And the cup squeezing or clamping phenomenon is effectively avoided.

The invention relates to a bone cement targeted plugging and secondary injection method for a patient with fracture centrum edge rupture in orthopaedic vertebroplasty. According to the method, the position of a vertebral rupture opening is determined according to image information such as preoperative X-rays and CT, and injection is carried out for several times through preoperative planning and marking of the position of a target spot and the direction of a puncture needle. During first-time injection, the bone cement push rod is located near a fracture opening of the vertebral body, small-amount injection is conducted in the bone cement high-viscosity period to block the fracture opening, after the fracture opening is closed, bone cement is blended for the second time, injection is conducted on the whole vertebral body in the bone cement low-viscosity period, and the bone cement is evenly and densely distributed in the whole fracture area. According to the technology, the risk of bone cement leakage or poor bone cement dispersion caused by one-time injection is avoided, the risk of bone cement leakage is reduced, the surgical effect is improved, and the surgical safety is also ensured.

The invention belongs to the field of biological medicine, and particularly relates to a medicine for treating EGFR mutation non-small cell lung cancer meningeal metastasis, application, a medicine box and a preparation method of the medicine, the medicine is a freeze-dried powder preparation or injection of EGFR-TKIs for subarachnoid space injection, the amount of EGFR-TKIs per person in the medicine is 0.01-5 mg, and the amount of EGFR-TKIs in the medicine is 0.01-5 mg. The injection method comprises any one of lumbar puncture, bridge forebay indwelling catheter injection and Ommaya capsule injection. The prepared EGFR-TKIs injection can be directly injected into the subarachnoid space, the drug concentration in cerebrospinal fluid of a patient is greatly improved, the cerebrospinal fluid / plasma concentration ratio of the EGFR-TKIs injection is increased from far less than 1 to more than 2 times and even can reach more than 10 times, and the EGFR-TKIs injection can completely solve the problem of insufficient dosage caused by a blood-brain barrier after oral administration of a targeted drug and has a good application prospect. The medicine takes effect quickly, and the treatment effect on lung cancer meningeal metastasis can be remarkably improved.

The invention relates to the technical field of methods for treating focuses in lungs, in particular to a method for injecting medicine into peripheral cavernous focuses of lungs under the guidance of a bronchoscope ultrasonic small probe. According to the technical scheme, the medicine injection method for precise treatment of the focus in the lung under guidance of the bronchoscope ultrasonic small probe comprises the steps that firstly, preoperative evaluation is conducted on the illness state of a patient; 2, an equipment preparation stage; step 3, anesthesia; 4, bronchial insertion and focus positioning; 5, guide sheath tube fixation and medicine injection preparation are carried out; sixthly, precise medicine injection is conducted; and step 7, postoperative observation and treatment. High-resolution CT is combined with computer simulation scanning to reconstruct a focus in a three-dimensional mode, the relation between the lung focus and a bronchial tree and the path from the bronchial tree to the focus are positioned, a small ultrasonic probe is used for carrying a guiding sheath to stretch into the path, and after it is confirmed through an ultrasonic image that the small ultrasonic probe reaches the focus position, the small ultrasonic probe is withdrawn, and the focus position of the lung is determined. And performing focus medicine injection treatment in the target bronchial tube by using an injector through the ultrasonic guide sheath tube.

The application discloses a driving mechanism, a driving method, an automatic injection device and an injection method. The driving mechanism comprises a push rod, a guide tube, a release sleeve and a rotor. The push rod is coaxially arranged in the guide tube. The guide tube is provided with elastic arms and a first opening. The release sleeve is coaxially nested on the outer wall of the guide tube. The release sleeve is provided with a second opening and a first elastic hook. The rotor is nested on the outer wall of the release sleeve and is used for limiting the radial movement of the first elastic hook. The rotor is provided with a third opening. When the first opening and the third opening intersect, and when the first elastic hook moves to the intersecting position, the first elastic hook is ejected towards the third opening, so that the guide tube releases the axial limitation on the release sleeve. When the second opening reaches the position of the elastic arms, the outer elastic arms release the axial limitation on the push rod, and the push rod moves from the distal end to the proximal end. The control start of multiple nodes can be realized, and the uniformity of drug mixing during injection is improved.

The invention discloses a method for reducing stem cell injection loss and improving injection accuracy, which comprises the following steps: determining radioactive rectal injury diagnosis and treatment indications according to clinical medical history and previous examination, determining typical focuses in intestinal tracts through enteroscopy, preparing a stem cell preparation, and performing multi-point injection administration on typical lesion parts. Air in the endoscope injection tube is emptied before injection; a submucous membrane water cushion is formed by utilizing the endoscope injection tube; a vertical injection method is adopted for dosing and air is used for boosting; according to a preset formula, the injection dosage of each diseased region and each injection site is calculated, the injection speed is controlled, the injection dosage is finely adjusted according to the diseased condition, and the endoscope is retreated after injection is finished; the problems of dose loss and inaccurate injection existing in stem cell injection in radioactive rectal injury treatment are solved, and the effect and reliability of stem cell treatment are improved.

To reduce grouting costs while efficiently improving ground.SOLUTION: An injection method of a grout material comprises: a permeability coefficient acquisition step of acquiring a permeability coefficient of the ground in a drilled hole; a grout material determination step of determining a type of grout material based on the permeability coefficient acquired in the permeability coefficient acquisition step; and a grout material injection step of injecting the type of grout material determined in the grout material determination step into the drilled hole. In the grout material determination step, when the permeability coefficient acquired in the permeability coefficient acquisition step is greater than a predetermined threshold value, the type of grout material is determined to be a first grout material generated by mixing a first cement and water, and when the permeability coefficient acquired in the permeability coefficient acquisition step is equal to or less than the threshold value, the type of grout material is determined to be a second grout material generated by mixing second cement having an average particle size smaller than the average particle size of the first cement with water.SELECTED DRAWING: Figure 2

The invention relates to the technical field of medical instruments, and provides a desensitizer injection instrument and an injection method thereof.The desensitizer injection instrument comprises a shell, a sleeve, an injection instrument body and a pressing head, an inlet and a through cavity which are communicated are formed in the shell, the sleeve is arranged in the through cavity in a sleeved mode through the inlet and moves towards an outlet position of the shell, and the injection instrument body is detachably arranged in the sleeve; the pressing head and the sleeve are arranged in the shell and used for directly delivering medicine doses to a target area in a human body, the pressing head abuts against the injector body when the pressing head and the sleeve are clamped through the clamping structure, the pressing head acts under the action of external force so as to drive the injector body and the sleeve to move towards the outlet position of the shell, and medicine delivery of the injector body is achieved. According to the invention, the injection instrument is designed to facilitate self-injection of a patient, the limitation in the existing subcutaneous injection desensitization treatment process is solved, and inconvenience and resistance psychology caused by frequently going back and forth to a hospital are avoided, so that a long-term treatment plan is favorably maintained, and a better treatment effect is achieved.