39 results about "Paracentesis" patented technology

The invention discloses a femoral artery paracentesis post-operation pressure-controlled hemostasis device and a monitoring intelligent control system thereof, and relates to the technical field of medical apparatuses and instruments, and the femoral artery paracentesis post-operation pressure-controlled hemostasis device comprises an assembly panel; the air bags are arranged at the bottom of the assembly panel; the air pump is arranged at the top of the assembly panel and used for controlling the air bags to contract; the control piece is arranged at the top of the assembly panel and used for controlling the air pump; the Doppler probe is arranged at the bottom of the assembly panel and used for detecting the blood flow speed of the far end of a puncture point, the hemostasis safety and efficiency are remarkably improved through multi-mode intelligent control and a real-time feedback mechanism, the vein area is accurately recognized and avoided in combination with ultrasonic and infrared spectrum analysis of the artery positioning module, the thrombus forming probability is effectively reduced, and the blood flow speed of the far end of the puncture point is detected. The pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostatic effect, and improves the comfort of the patient while ensuring the hemostatic effect.

The percutaneous pericardium puncture assembly comprises a puncture tube and a puncture piece, and the puncture tube comprises a tube body and a puncture section arranged at the far end of the tube body. A puncture channel, a negative pressure suction channel and an imaging channel are formed in the tube body and communicated with a working opening in the far end of the puncture section. The imaging module is arranged in the imaging channel in a penetrating mode, and real-time visualization of in-vivo puncture operation is achieved. The near end of the negative pressure suction channel can be in butt joint with a negative pressure suction device to provide negative pressure for the working port so as to adsorb the pericardium wall layer; the puncture piece penetrates through the puncture channel and can puncture the adsorbed pericardium wall layer. According to the embodiment, the vacuum suction channel is formed, the pericardium wall layer can be captured before puncture of the puncture piece, in this way, even if only a small amount of pericardial effusion exists between the pericardium wall layer and the pericardium dirty layer, medical staff can easily complete puncture of the pericardium wall layer under the condition that the pericardium dirty layer is not damaged, and the puncture efficiency of the pericardium wall layer is improved. The operation is simple, and the safety and the success rate of percutaneous pericardium paracentesis under full indications are greatly improved.

The invention relates to the technical field of compression hemostasis in interventional operations, and particularly discloses an adjustable compression hemostasis fixing band for interventional operations, which comprises a compression hemostasis component and a fixing component, the compression hemostasis component comprises a mounting bag and a sandbag, an interlayer bag is arranged in the mounting bag, and first magic tapes are arranged on the upper and lower inner walls of openings at two ends of the mounting bag; the fixing assembly comprises a first elastic compression tourniquet, a second elastic compression tourniquet and elastic viscous fixing bands, the mounting bag is fixedly connected to the first elastic compression tourniquet, and the elastic viscous fixing bands are connected to openings in the two ends of the mounting bag; the first elastic compression tourniquet, the second elastic compression tourniquet and the elastic viscous fixing band are fixed to the thigh of the affected side of a patient and the paracentesis incision in a reinforced mode, and through stable fixation at multiple positions, the device is not prone to sliding and has no harm to the skin, and the comfort level of the patient is improved.

The invention belongs to the technical field of medical machinery, and particularly relates to a percutaneous puncture catheter which comprises a handle assembly, a laser light source module is assembled in the handle assembly, a sheathing canal is fixed to one end of the handle assembly, and a multifunctional cavity, a plurality of bending adjusting cavities and a plurality of optical fiber cavities are formed in the sheathing canal. The multifunctional cavity channel through shaft is arranged in the sheathing canal, and the multiple bending adjusting cavity channels and the multiple optical fiber cavity channels are annularly arrayed on the outer side of the multifunctional cavity channel and located in the sheathing canal. In the percutaneous paracentesis, real-time images are obtained through the endoscope imaging module, laser spots assist in judging the puncture path, medical workers are helped to judge the puncture path, the number of times of correction in the operation is reduced, the puncture success rate is increased, an accurate puncture system is achieved, meanwhile, the hollow shaft motor is used for driving the transmission ring and the scraper to rotate, flushing water flow is formed, and the puncture effect is improved. Body fluid adhered to the surface of the collimating lens is cleaned, secondary pollution is avoided, and it is ensured that a puncture path is clear.

The invention discloses a cirrhosis ascites pressure dynamic measurement method and system, and relates to the technical field of medical auxiliary measurement. Comprising the following steps: acquiring an abdominal cavity image, ascites pressure dynamics and abdominal cavity blood flow pulsation data of a patient; extracting periodical fluctuation characteristics of the pressure data, and dynamically calibrating the image anatomical region according to the periodical fluctuation characteristics to obtain a candidate region; performing phase decorrelation analysis on the fluctuation characteristics of the region and the abdominal blood flow pulsation data to exclude a blood vessel adjacent region and obtain a target cavity region; based on this, a puncture path prediction model is constructed, and path data is output; finally, safety judgment is conducted on the path data, and when the pressure gradient of the path data is stable within the preset length range and meets the decorrelation condition, a puncture positioning point is output. The system comprises corresponding modules for executing the steps. Through multi-modal data fusion and dynamic analysis, precise planning and safety verification of puncture points are achieved, and the risk of accidentally injuring blood vessels and intestinal canals in the abdominal paracentesis is reduced.

The invention relates to the technical field of clinical medical instruments and operation, and discloses a safe and high-success-rate operation method and system for sternum marrow puncture. The invention provides a closed-loop solution based on multi-modal information fusion and intelligent control in order to solve the pain points that traditional sternum paracentesis highly depends on experience of doctors, the complication risk is high and the success rate is unstable. According to the method, a patient personalized three-dimensional model is constructed through images such as preoperative CT or intraoperative ultrasound, risk early warning is conducted through a machine learning model, and an optimal puncture track is generated through a path planning algorithm. The core innovation of the method is as follows: in the puncture process, real-time image navigation and needle point pressure feedback are dynamically combined, and the subjective'falling sense 'is quantified into objective data for the first time so as to accurately control the depth; a set of intelligent safety braking system is integrated, the puncture needle can be automatically locked when it is monitored that thrust is abnormal, and the fatal risk that the heart and great blood vessels are damaged due to too deep puncture is actively avoided.

The invention discloses a transparent cornea paracentesis knife and a using method thereof, and relates to the technical field of medical instruments.The transparent cornea paracentesis knife comprises a knife handle, a detection cavity is formed in the center of the interior of the knife handle, a connecting rod extending to the front end of the knife handle is installed in the detection cavity in a limited mode, and an inclination angle positioning seat is fixedly installed at the front end of the connecting rod; a rotating block is installed in the dip angle positioning seat, a dip angle fine adjustment self-locking mechanism is arranged on one side in the dip angle positioning seat, the rotating block is kept stable at different angles after adjustment, a fixing block is integrally formed at the front end of the rotating block, and a cutter bar is installed at the front end of the fixing block. The tail end of the cutter bar is connected with the fixing block through a bearing, a detachable cutting edge is arranged at the front end of the cutter bar, a limiting rod is installed at the front end of the outer portion of the cutter bar, and the problems that due to the fact that a transparent cornea puncture cutter is prone to being deep or shallow due to manipulation differences, and dynamic adjustment of the transparent cornea puncture cutter is inconvenient are solved.

The invention relates to the technical field of application of recovery after cardiovascular paracentesis, in particular to a hemostasis device for cardiovascular puncture, which comprises a compression component and provides a stable and reliable fixing mode for hemostasis after cardiovascular paracentesis by combining a fixing component with the compression component. A clamping head in the fixing assembly can be fixed to a sickbed body or a wheelchair, and the pressing assembly can be fixed through the fixing assembly. Therefore, after a cardiovascular patient is subjected to paracentesis, the compression assembly compresses the wrist of the patient to stop bleeding, the fixing assembly can fix the wrist of the patient through the compression assembly, the wrist is prevented from moving disorderly when the patient is not sober under the action of anesthetic after the operation, and the situation that the compression assembly moves due to unconscious actions of the patient, and the hemostatic effect is affected is avoided.

The utility model discloses a fixing device for a salt bag used after internal jugular vein paracentesis. Comprising a box body with an opening in the bottom, a containing bag mechanism fixedly arranged at the bottom of the box body and used for containing a salt bag, a countdown reminding mechanism fixedly arranged on the box body, a first neck fixing belt, a second neck fixing belt and a pressure applying mechanism, wherein the first neck fixing belt and the second neck fixing belt are oppositely and fixedly arranged on the outer side face of the box body; the pressure applying mechanism is arranged on the box body and can apply pressure to the salt bag placed in the containing bag mechanism; wherein the first neck fixing band and the second neck fixing band are matched with each other and can be limited on the neck. The position of the salt bag is fixed by a mechanical structure instead of a mode of holding the salt bag by hands, so that the physical strength of people can be reduced, the operation is simple, and the use is convenient. And the countdown reminding mechanism can give an alarm for reminding after the salt bag compression time reaches the set time, the situation that the salt bag compression time far exceeds the set time can be effectively avoided, and potential safety hazards can be reduced. The salt bag fixing device is suitable for being used for fixing the position of the salt bag after the internal jugular vein puncture operation.

The utility model discloses a compression hemostasis device used after femoral artery paracentesis, and relates to the technical field of medical instruments, the compression hemostasis device comprises a compression cylinder, a compression air bag, an elastic band and a sterile dressing, and the compression cylinder is provided with a channel hole in the axial direction; the compression air bag is detachably arranged in the channel hole; the elastic band is connected to the two symmetrical sides of the non-compression head end of the compression cylinder. And the sterile dressing is adhered to one end of the compression head of the compression cylinder. The compression air bag is arranged in the compression cylinder, and the compression air bag can be suitable for the shape of the surface to be compressed after being inflated to perform fitting compression, so that the uniformity of compression stress is improved, the problems of excessive local compression and insufficient local compression force are avoided, and the hemostatic effect is effectively improved.

A needle thoracostomy device with a venting device, a deployment device, and a positioning device. The venting device is configured to vent a pleural cavity of a patient. The deployment device is removably attached to the venting device and is configured to perform a needle thoracostomy to attach the venting device to the patient. The deployment device has a release mechanism which, when moved to a released position, allows the deployment device to be separated and lifted away from the venting device. The positioning device is configured to removably engage with at least one of the deployment device and the venting device to correctly position the deployment device and the venting device on the patient for the needle thoracostomy. The positioning device may position the deployment device and the venting device based on anatomical landmarks.

A simulator apparatus for training medical professionals in the procedures of chest tube insertion and / or pericardiocentesis. The apparatus includes a first stand element and a second stand element that form a rib panel base with the two elements substantially at right angles to one another to create a 90-degree stand. A rib panel is removably joined to the two stand elements and includes curved slots representing the spaces between ribs. For simulation of the pericardiocentesis procedure, in an embodiment, a heart component located within the simulator allows the user to simulate insertion of chest tubes between the simulated rib spaces into or around the heart. The model may also use a subcutaneous and skin overlay for human skin simulation.

The application discloses a phase decorrelation-based abdominal puncture path determination method and system, and relates to the technical field of medical auxiliary measurement. The method comprises the following steps: acquiring an abdominal image, ascites pressure dynamics and abdominal blood flow pulsation data of a patient; extracting periodic fluctuation characteristics of the pressure data, and dynamically calibrating the image anatomical region according to the characteristics to obtain a candidate region; performing phase decorrelation analysis on the fluctuation characteristics of the region and the abdominal blood flow pulsation data to exclude the adjacent region of the blood vessel and obtain a target cavity region; constructing a puncture path prediction model based on the target cavity region and outputting path data; and finally, performing safety determination on the path data, and outputting a puncture positioning point when the path data is within a preset length range, the pressure gradient is stable, and the decorrelation condition is met. The system comprises corresponding modules for executing the above steps. Through multi-modal data fusion and dynamic analysis, the application realizes accurate planning and safety verification of the puncture point, and reduces the risk of damaging blood vessels and intestinal tracts in abdominal puncture.

An anterior chamber maintainer (ACM), which is to be utilized in connection with maintaining physiological intraocular pressure during intraocular surgery, is disclosed and comprises an axially elongated tubular member which is adapted to be fluidically connected at a first end to a supply of balanced salt solution (BSS) for introduction into the anterior chamber of an eye so as to maintain adequate intraocular pressure while performing any intraocular surgery. A second opposite end of the anterior chamber maintainer (ACM) is provided with a sharply pointed end for insertion through a paracentesis incision formed within the limbus region of the eye, and a non-deformable, incompressible, tapered, annular bulbous portion is interposed between the first and second ends such that as the second end passes through the paracentesis incision, the non-deformable, incompressible, tapered, annular bulbous portion will cause the paracentesis incision to deform or expand radially outwardly, and after passing through the paracentesis incision, the non-deformable, incompressible, annular bulbous portion will trap the anterior chamber maintainer (ACM) within the anterior chamber of the eye.

A simulator apparatus for training medical professionals in the procedures of chest tube insertion and / or pericardiocentesis. The apparatus includes a first stand element and a second stand element that form a rib panel base with the two elements substantially at right angles to one another to create a 90-degree stand. A rib panel is removably joined to the two stand elements and includes curved slots representing the spaces between ribs. For simulation of the pericardiocentesis procedure, in an embodiment, a heart component located within the simulator allows the user to simulate insertion of chest tubes between the simulated rib spaces into or around the heart. The model may also use a subcutaneous and skin overlay for human skin simulation.

The utility model provides a kidney paracentesis postoperation waist and abdomen pressurizing anti-bleeding bandage which comprises a bandage body, and a plurality of through holes are evenly formed in the bandage body. A pressing cotton cushion is arranged on the bandage main body through a mounting structure; the bandage main body is further provided with a fixed connecting piece, and the fixed connecting piece is used for fixing the bandage main body on the waist of the patient, so that the pressing cotton cushion installed on the bandage main body presses a puncture point of the kidney paracentesis on the waist of the patient, and the bleeding prevention effect of the puncture point is achieved; the number of the through holes is multiple, and the through holes are evenly distributed in the bandage body, so that the position of the pressing cotton cushion can be adjusted as required according to the position of an operation puncture point of a patient; due to the fact that the through holes are evenly formed in the bandage body, when the bandage body is bound to the waist of a patient, the air permeability is good.

The utility model relates to the field of operations, and provides an abdominal paracentesis post-operation liquid seepage prevention device which comprises a negative pressure cavity, a display screen fixedly installed on the upper portion of the outer side of the negative pressure cavity, a pressure sensor fixedly installed at one end of the inner side of the negative pressure cavity, an installation base arranged on the top of the negative pressure cavity, a one-way valve fixedly installed on the outer side of the installation base, and an exhaust pipe installed on the outer side of the one-way valve. The display screen is installed on the upper portion of the outer side of the negative pressure cavity, the specific pressure value in the negative pressure cavity can be displayed in real time, the pressure sensor is installed in the negative pressure cavity, the specific pressure value can be monitored in real time, the negative pressure pump can extract air in the negative pressure cavity, manual operation is reduced, the working efficiency is improved, and the working efficiency is improved. In addition, the extraction force can be better controlled, the extraction is smoother, and a patient feels more comfortable.

This invention relates to the field of medical device technology, and in particular to a post-abdominal paracentesis anti-leakage device, comprising: a fixing part for fixing to the skin around the puncture site; a pressurizing part disposed on the fixing part for applying adjustable output pressure to the puncture site; a sensor assembly for directly or indirectly acquiring signals of changes in intra-abdominal pressure; and a control assembly electrically connected to the sensor assembly and the pressurizing part, respectively, for receiving and analyzing data transmitted by the sensor assembly, generating control commands based on the analysis results, and adjusting the output pressure of the pressurizing part on the puncture site. This achieves intelligent adjustment of the anti-leakage device's output pressure on the puncture site according to intra-abdominal pressure, so that when the patient is in a low-abdominal-pressure state such as lying flat, low output pressure is used to achieve anti-leakage and improve comfort, while when the patient is in a high-abdominal-pressure state such as sitting up, defecating, coughing, or sneezing, high output pressure is used to achieve anti-leakage.

The invention discloses a post-femoral artery paracentesis sign monitoring data processing system, and relates to the technical field of monitoring data processing, and the system comprises an abnormal sign analysis unit which is used for constructing a cross entropy coupling model based on the sign data of a post-femoral artery paracentesis patient so as to analyze the relevance between local signs and overall signs, obtaining an abnormal sign propagation path map; the sensitivity extraction unit is used for dividing different monitoring stages according to the abnormal sign propagation path map, performing phase feature analysis, extracting a sensitivity coefficient and generating a sensitivity change feature set; and the early warning signal generation unit is used for generating graded early warning signals and intervention suggestions based on the sensitivity change feature set according to a comparison result of the risk probability and a preset threshold value. The system has the advantages of local-overall sign correlation analysis, staged sensitivity calculation and intelligent graded early warning according to monitoring data.

The utility model relates to an abdominal cavity pressurizing bellyband, which comprises a bellyband body wound on the belly of a human body, and two ends of the bellyband body can be adhered; the movable belt can be connected to the bellyband body in a sliding mode in the length direction of the bellyband body; and the liquid absorption pad is movably adhered to the moving belt, and a pressurizing pad is arranged on the liquid absorption pad. The abdominal cavity pressurizing bellyband is mainly suitable for a patient with abdominal cavity seepage after abdominal cavity paracentesis, the local pressurizing mode and the total abdominal pressurizing mode are combined, local pressure is increased for an abdominal cavity puncture opening, total abdominal pressure is relieved, liquid seepage from the puncture opening can be absorbed in time, liquid seepage is prevented, and the infection risk is reduced.

1. The name of the design product: medical model (peritoneal comprehensive puncture model). 2. The use of the design product: the design product is used for medical puncture model. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: assembly state perspective view.

The utility model provides a pressurizing hemostasis pressure band used after kidney paracentesis, which comprises a fixing structure, a connecting structure, a filling structure and a pressurizing structure, the fixing structure is arranged on one side of the connecting structure, the fixing structure and the connecting structure are connected in a sewing mode, the connecting structure is arranged on the outer side of the filling structure, and the pressurizing structure is arranged on the outer side of the filling structure. The filling structure is directly placed in the connecting structure, the filling structure is arranged on one side of the pressurizing structure, and the filling structure and the pressurizing structure are connected through the connecting structure; after the pressure belt is used, the hook-and-loop fastener can be torn down, the adhesive film and the connecting structure are separated, the position, provided with the hook-and-loop fastener, of a new adhesive film is adhered to the hook-and-loop fastener of the connecting device and can be repeatedly used, meanwhile, the anti-slip strip and the adhesive film are designed, the wound position is simply, conveniently and rapidly fixed, the pressure belt is not prone to displacement, and the pressure belt is convenient to use. The problem that a traditional pressure belt moves due to poor fixing performance and repeatedly rubs and touches the wound position to cause secondary trauma is solved.

The application belongs to the technical field of postoperative auxiliary devices, and particularly relates to a puncture postoperative auxiliary pressing device, which comprises a pressure bag, cuffs fixed on two sides of the surface of the pressure bag, and belts fixed on two sides of the lower surface of the pressure bag, one side of the surface of the pressure bag is provided with an inflation port, and a pressing mechanism is installed on the surface of the pressure bag. The pressing mechanism can adjust the positions of the pressing air bag and the blocking strip, so that the positions are away from the trachea of the patient, the trachea of the patient is prevented from being compressed, the normal breathing of the patient is not affected, the situation that the patient cannot breathe smoothly is avoided, the surrounding skin of the puncture part of the patient can be rotated and massaged, so that the blood circulation of the subcutaneous tissue of the puncture part is accelerated, the subcutaneous tissue of the puncture part is prevented from being congested, the postoperative recovery of the patient is prevented from being affected, the patient can be relaxed, and the pain of the patient after the operation is reduced.

The utility model provides a hemostasis compressor used after femoral artery paracentesis. The hemostasis compressor comprises a compressor body, an upper cover, a movable assembly, a limiting structure, a pressing assembly and a fixing strap. The compressor main body is provided with a mounting inner cavity; the upper cover is fixedly mounted on a top opening of the mounting inner cavity in a covering manner; the movable assembly is rotatably mounted in the mounting inner cavity; the limiting structure is arranged between the upper cover and the movable assembly; the pressing assembly is matched with the movable assembly and can move up and down relative to the movable assembly to pressurize and stop bleeding; the two fixing bridles are used for fixing the compressor body. According to the hemostasis compressor used after femoral artery paracentesis, when the pressing assembly presses a hemostasis point downwards, the bottom of the hemostasis compressor cannot rotate, and secondary damage to a femoral artery puncture point cannot be caused; when a patient moves and muscles move to cause rotation of a puncture point relative to the pressing assembly, the pressing assembly can be driven to rotate synchronously, and secondary injury of the puncture point caused by relative rotation is avoided.

FIELD: medicine; ophthalmology.SUBSTANCE: after performing phacoemulsification, linear incisions are made in the anterior capsule from the edge of the capsulorhexis to the vault of the capsular bag in opposite meridians, forming a 1 mm wide flap. Next, the flap is removed and pinched in the previously formed coloboma of the iris. In a particular case, if necessary, the flap is additionally pinched in the paracentesis, after which the paracentesis is sutured.EFFECT: reliable fixation, a sufficient level of tension and anatomically correct position of the IOL, and preventing its rotation, ensuring the absence of refractive shift.2 cl, 10 dwg, 2 ex

The invention discloses an anti-seepage device after abdominal paracentesis, the anti-seepage device after abdominal paracentesis comprises an anti-seepage structure, a seepage self-drainage structure and an inflation adjusting structure.According to the anti-seepage device after abdominal paracentesis, the anti-seepage structure and the inflation adjusting structure are designed, and through cooperative use of the anti-seepage structure and the inflation adjusting structure, the seepage self-drainage structure and the inflation adjusting structure are matched to be used; the internal air pressure can be adjusted according to the exudation condition of a wound surface, pressure injury is avoided while effective compression hemostasis is guaranteed, the blocking plate is always kept in the optimal attaching state, meanwhile, the baffle ring and the blocking plate are matched to form a three-dimensional sealing structure, exudate can be effectively blocked, and the dressing is superior to a traditional dressing; in order to avoid the problem that healing is affected by seepage aggregation caused by long-time seepage, a seepage self-drainage structure is designed, and automatic auxiliary drainage can be conducted on seepage through abdominal breathing floating of the patient through the seepage self-drainage structure.

The utility model belongs to the technical field of patient trousers, and particularly relates to a pair of patient trousers used after femoral artery paracentesis, which comprises a trouser body, an elastic waistband is fixedly connected to the top of the trouser body, a through groove is formed in the front surface of the trouser body, an abdomen shielding cloth is fixedly connected to the front side of the trouser body, and a sealing and filling block is fixedly connected to the front side wall of the elastic waistband. The abdomen shielding cloth is fixed to the front side of the elastic waistband, the through grooves corresponding to the abdomen position and the private part position of a user are shielded from the outer side, the abdomen shielding cloth is bonded with the sealing and filling block and the front surface of the pants body, and therefore the abdomen shielding cloth can be used for shielding the abdomen position and the private part position of the user from the outer side. The medical staff can conveniently pull the closing end of the abdomen shielding cloth upwards so as to pull the abdomen shielding cloth upwards, the through groove and the abdomen position and the private position of the user are exposed, the medical staff can conveniently observe the puncture point, a patient does not need to move in the operation process of the medical staff, and the private part can be well protected.

A needle thoracostomy device with a venting device, a deployment device, and a positioning device. The venting device is configured to vent a pleural cavity of a patient. The deployment device is removably attached to the venting device and is configured to perform a needle thoracostomy to attach the venting device to the patient. The deployment device has a release mechanism which, when moved to a released position, allows the deployment device to be separated and lifted away from the venting device. The positioning device is configured to removably engage with at least one of the deployment device and the venting device to correctly position the deployment device and the venting device on the patient for the needle thoracostomy. The positioning device may position the deployment device and the venting device based on anatomical landmarks.

The utility model discloses an internal neck puncture needle with scales, and belongs to the technical field of medical instruments. Comprising a sampling head, the sampling head is fixedly connected with a needle rod, a needle tip section is arranged at the end, away from the sampling head, of the needle rod, the needle rod comprises a first subsection, a second subsection and a third subsection, and the first subsection and the second subsection are each provided with a first identification piece and a second identification piece. When the puncture needle is used for paracentesis, a wound of a patient is punctured from the end, provided with the needle point section, of the needle rod, and after the needle rod is inserted into the wound of the patient, the puncture depth can be judged according to the first subsection, the second subsection or the third subsection in contact with the skin surface of the patient in cooperation with the first identification piece and the second identification piece; the first subsection, the second subsection and the third subsection are set to be in different colors, so that the device is easier to identify by an operator, and the problem that the insertion depth of the needle rod is difficult to judge by the operator due to an existing device is solved.