93results about How to "Accurate puncture" patented technology

The invention discloses a microwave ablation needle and a microwave ablation therapeutic apparatus thereof, and relates to a structure of the microwave ablation needle and the microwave ablation therapeutic apparatus using the microwave ablation needle. The microwave ablation needle mainly comprises an ablation needle, an ablation needle tube, a microwave coaxial cable, a capillary, a handle with a crank, a temperature sensor, a fixed frame, a high-frequency joint and a water cavity, wherein the fixed frame comprises the high-frequency joint, a water inlet joint, a water outlet joint and the temperature sensor and is connected with a terminal external socket; the high-frequency joint comprises a lock card reed; and the water cavity used for circulating cold water is arranged in the handle. The circulating water enters the capillary from the water inlet joint, then enters the water cavity from the ablation needle tube, and finally flows out from the water outlet joint. The microwave energy enters the microwave coaxial cable from the high-frequency joint, and radiates through the ablation needle. The microwave ablation needle, a microwave power source and a computer control unit form the microwave ablation therapeutic apparatus. The microwave ablation needle and the microwave ablation therapeutic apparatus are mainly used for treating tumor through microwave ablation.

The invention discloses a six-freedom-degree puncture operation robot which comprises a bottom plate, an XYZ three-axis moving table, an extending rod unit, an alpha beta angle joint module, a six-dimensional force sensor module and a puncture needle feeding module, wherein the XYZ three-axis moving table is fixed on the bottom plate; one end of the extending rod unit is connected with the XYZ three-axis moving table; and the other end of the extending rod unit is sequentially connected with the alpha beta angle joint module, the three-dimensional force sensor module and the puncture needle feeding module. The six-freedom-degree puncture operation robot can replace a doctor to execute puncture in a radiation environment through being guided by X-ray real-time images; the deviation of a target point is tracked in real time by the doctor; remote operation control is used; a needle feeding angle is timely regulated; the precise puncture on the lung parts is realized; the adverse influencecaused by hand trembling of the doctor is eliminated; the flow processes of stepped needle feeding and repeated checking in a conventional operation are omitted; one-step needle feeding is realized;the operation efficiency and the operation precision are improved; and the occurrence probability of complications of pneumothorax, bleeding and the like are reduced.

The invention discloses a full-automatic intelligent blood sampling method and device without the manual puncturing requirement. The device comprises a mechanical structure part and a control part and is characterized in that a system is mainly composed of modules such as an intelligent navigation blood vessel recognition and locating device, a full-automatic locating mechanical structure, a puncturing needle clamping device, a test tube transfer and storage device and an automatic spraying and disinfection device, and all the modules are automatically linked under the unified control of a computer so as to achieve full-automatic operation. The method and device have the advantages that the blood vessel or the tissue can be accurately punctured, the puncturing accuracy at least can be half of a millimeter, the blood vessel or the tissue can be punctured successfully at a time, operation is accurate, repeatability is high, fatigue is avoided, standard operation is achieved, and pain of a patient can be greatly reduced.

The invention discloses an active and passive hybrid type subclavian vein puncture robot. The active and passive hybrid type subclavian vein puncture robot comprises a puncture angle adjusting moduleand a posture adjusting module. The puncture angle adjusting module of the robot has two active freedom degrees, namely a puncture angle adjusting freedom degree and a needle inserting freedom degree;an ultrasonic probe and a force sensor are arranged on the puncture angle adjusting module, so that the puncture success rate is increased through an ultrasonic image and puncture force data; the posture adjusting module adopts a passive type joint and is locked by a clutch or a brake, so that the robot can maintain the current state conveniently; and a gravity compensating spring is used for alleviating the labor intensity of a doctor when the mechanism height is adjusted.

The invention discloses a puncturing positioning device of operation of intervertebral foramen of lumbar vertebra and a using method thereof, and belongs to the field of medical instruments. The operation puncturing positioning device comprises an operation bed fixing clamp, an upright column which is perpendicular to a bed surface is connected with the fixing clamp, the end of a cross bar is slidably connected with the upright column, the other end of the cross bar is a rotary shaft, an adjusting rotary tube is rotatably connected with the rotary shaft, a positioning tube which is perpendicular to the axial center of the rotary shaft is arranged on the side, close the end, of the adjusting rotary tube, a positioning needle is arranged in the positioning tube, a horizontal length measuringbar and a tilting length measuring bar are arranged on a rotary shaft and an adjusting rotary tube which are located on the side of the positioning tube, arc-shaped long holes which are formed in therotary direction are formed in the outer circumference of the adjusting rotary tube, and the arc-shaped long holes move along the horizontal length measuring bar when the adjusting rotary tube is rotated. By means of the puncturing positioning device, the puncturing direction and angle can be accurately positioned, the operation time can be shortened, the smooth processing of the operation is ensured, the pain of a patient is relieved, and the overstrain of a doctor is reduced.

The invention discloses a navigation template used for glossopharyngeal nerve navigation puncture and a navigation puncture method. The navigation puncture method is characterized in that a 3D imaging technique is adopted, a specific high-precision puncture digital navigation template is generated according to bone characteristics of a patient, and ultimately a high-precision puncture real navigation template is generated. According to the navigation puncture method, it can be guaranteed that puncture is accurately and properly carried out according to a preset puncture path and a needle insertion depth on the basis of the real navigation template, the success rate of an operation can be greatly improved, and harm to the patient is reduced; meanwhile, the navigation template and the navigation puncture method have the advantages that operation time is shortened, perspective radiant quantity is reduced, and operative complications are reduced. By means of the navigation puncture method, the navigation template is convenient to manufacture, the procedures are simple, manual operations are not needed, the automation degree is high, the navigation template is accurately manufactured, and the specific navigation template is made for the specific patient and accords with a humanized medical mode.

The invention discloses a smart puncture drainage device for extracting pleural effusion, and belongs to the medical device field. The smart puncture drainage device for extracting the pleural effusion comprises a fixed base seat and an automatic puncture drainage device which are used in matching mode. The invention aims at providing the smart puncture drainage device for extracting the pleural effusion. The fixed base seat is positioned on a puncture point, and a puncture part of a patient is fixed, and then accurate positioning of automatic puncturing can be achieved. The automatic puncture drainage device can achieve the automatic puncturing, and replaces former manual operation in traditional puncturing. By regulating the position of a positing mechanism in the automatic puncture drainage device, accurate control for the puncture depth can be achieved. The smart puncture drainage device for extracting the pleural effusion can perform smart puncturing, is accurate in puncturing, and greatly reduces risk of thoracocentesis.

The invention belongs to the technical field of medical apparatus and instruments, and discloses a cardiovascular intervention curer. The cardiovascular intervention curer comprises a puncture device and a fixing device, wherein the puncture device comprises a needle tube, a diaphragm bursting tube is arranged at the top of the needle tube, a needle head is installed at one end of the diaphragm bursting tube, which extends out of the needle tube, a push rod is installed in the needle tube, a push plate is arranged at one end of the push rod, a rubber plug is fixedly installed at the other end of the push rod, a through hole is formed in the rubber plug, an elastic seal diaphragm is arranged on the through hole, a wire guiding hole is formed in the push rod, a catheter is connected with the top of the needle tube, the catheter is connected with a collection bag, a flow control valve is arranged on the catheter, the fixing device comprises a base seat and an upper arc plate installed on the base seat, an arc-shaped groove is formed in the top of the base seat, a hand holding portion is arranged in the middle of the base seat, a fixing portion is arranged at the bottom of the base seat, and two fixing bands are respectively arranged on two sides of the fixing portion. The puncture device is fixed on the fixing device, and a doctor can hold the fixing device in hand for puncturing and then fixes the fixing device, and therefore the doctor can conveniently and accurately operate the cardiovascular intervention curer, and collects blood in the collection bag, and furthermore an operation surface of the doctor can not be polluted.

The invention discloses a conformal puncture guiding device and a preparation method thereof. The guiding device comprises a base plate and puncture processus spinosuses, wherein the base plate is a plate structure body; the puncture processus spinosuses are arranged on the base plate and are distributed and arranged on the arc-shaped base plate in inclined distribution; the included angle between the puncture processus spinosuses and the arc-shaped base plate is 20 to 160 degrees; the length of the puncture processus spinosuses is 2 to 180mm; needle feeding through holes penetrating through the base plate are formed in the puncture processus spinosuses. Through the arrangement of the base plate, the matching with the surface of the puncture position of a puncture object is convenient; through the arrangement of the puncture processus spinosuses with the included angle being 20 to 160 degrees with the base plate and the length being 2 to 180mm on the base plate, the needle feeding depth, the needle feeding angle and the needle feeding quantity of the puncture needles can be conveniently positioned, so that the accurate puncture can be realized only through using the conformal puncture guiding device without the real time observation by using large-scale medical imaging equipment such as CT (Computerized Tomography) equipment; the problems of long puncture time, radiation harm on puncture objects and doctors and the like are solved.

The invention discloses a tail end puncture execution device of a medical surgical robot, which integrates multiple sensors and realizes accurate measurement of puncture distance and accurate control of needle threading moment by means of laser ranging, force feedback and the like. Meanwhile, data collected by the device can assist existing navigation guiding equipment in being matched with medical imaging equipment to improve the overall puncture precision in an operation. The device can be used for diagnosing and locally treating a lesion area in a human body, the effects of fixedly installing a rigid needle type medical instrument and accurately positioning a target position are achieved, and a laser distance measuring sensor and a pressing and pulling force sensor on the tail end puncture execution device are used for accurately controlling the body surface distance, the puncture depth and the puncture barrier reaction of a puncture needle, so that the precision of targeted puncture is improved. In addition, a puncture needle clamping module is provided, disposable medical instruments can be rapidly and conveniently replaced, and the postoperative cleaning work and preparation time are greatly shortened.

The invention discloses a microwave ablation needle and a microwave ablation therapeutic apparatus thereof, and relates to a structure of the microwave ablation needle and the microwave ablation therapeutic apparatus using the microwave ablation needle. The microwave ablation needle mainly comprises an ablation needle, an ablation needle tube, a microwave coaxial cable, a capillary, a handle witha crank, a temperature sensor, a fixed frame, a high-frequency joint and a water cavity, wherein the fixed frame comprises the high-frequency joint, a water inlet joint, a water outlet joint and the temperature sensor and is connected with a terminal external socket; the high-frequency joint comprises a lock card reed; and the water cavity used for circulating cold water is arranged in the handle. The circulating water enters the capillary from the water inlet joint, then enters the water cavity from the ablation needle tube, and finally flows out from the water outlet joint. The microwave energy enters the microwave coaxial cable from the high-frequency joint, and radiates through the ablation needle. The microwave ablation needle, a microwave power source and a computer control unit form the microwave ablation therapeutic apparatus. The microwave ablation needle and the microwave ablation therapeutic apparatus are mainly used for treating tumor through microwave ablation.

The invention discloses an ultrasound-guided puncture positioning guide device. The ultrasound-guided puncture positioning guide device comprises a guide device body for installing a positioning plate on an ultrasonic probe, a first sliding groove with scales is arranged on the positioning plate, and a needle sleeve is assembled in the sliding groove; and the ultrasonic probe is detachably installed on the positioning plate. According to the ultrasound-guided puncture positioning guide device, an auxiliary laser positioning device is adopted, after the ultrasound position is determined, the scope where a puncture needle way can be built is determined through the laser positioning device, the position of the needle way can be displayed through a display screen all the time, and therefore the good auxiliary effect is provided for a doctor; a positioning plate structure matched with the probe is arranged so as to be capable of being matched with an ultrasound imaging device, under indication of puncture target spots displayed in the display screen of the ultrasound imaging device, the puncture position is precisely given through the scales on the positioning plate, and the puncture process can be implemented with a purpose; and the overall set of device can be applied to multiple positions on the body surface and can have the fixing effect on the ultrasonic probe, so that the overall puncture process is premise and simple, and the good puncture effect is achieved.

The invention discloses a cardiovascular intervention device, which comprises a puncture device and a fixed device, wherein the puncture device comprises a needle tube; the needle tube is formed by threaded connection of a front end with a through hole, a plurality of sleeve tubes and a tail end with a rear wing; a membrane breaking tube is arranged on the top part of the front end; a needle head is arranged on one end, stretching out of the needle tube, of the membrane breaking tube; the other end of the membrane breaking tube extends into the needle tube; a push rod is arranged in the needle tube and is formed by threaded connection of a rubber plug, a plurality of sleeve tubes and a tail end with a push rod; a liquid storage cavity is arranged on one side of the front end of the push rod; a liquid inlet is formed in one side of the rubber plug; a through hole adaptive to the membrane breaking tube is formed in the rubber plug; a gauze sleeve is arranged on the through hole; a wire guide rod is arranged in the push rod; one end of the wire guide rod is communicated with the through hole; the other end tip of the wire guide rod extends out of the tail end with the push rod. According to the cardiovascular intervention device, doctors can operate more conveniently and accurately, blood is collected in a collection bag, the operation surface of the doctors is not polluted, the guidance of a guidewire is completed, meanwhile, the guidewire is disinfected, and the lengths of the needle tube and the push rod can be adjusted according to the needs.

The invention provides a minimally invasive guider for spines. The guider consists of a grid, a ruler, guider bodies, a drill bush and a puncture needle, and is used for guiding of spine puncture. Before surgery, the grid is stuck to the surface of skin; a puncture point and a puncture angle on the skin are determined by computerized tomography (CT) imaging; during the surgery, the ruler is attached to the surface of the skin, and a guider body is placed on the ruler, and the angle of the guider body can be adjusted longitudinally and transversely relative to the ruler to make a puncture direction and angle fit in with a puncture line, and thereby, the goal of puncture guiding is achieved.

The invention discloses an intelligent medical puncture needle, which comprises a control module, a vision module, a measurement module, a power module, a fixed base, a clamping end and a puncture needle; the power module, the vision module and the measurement module are respectively connected with the control module; the control module and the power module are set inside the fixed base; the vision module is set at the part below the fixed base close to the clamping end; Puncture needle: the vision module obtains the puncture status of the puncture needle in real time, the control module adjusts the angle of the puncture needle according to the information sent by the vision module, the power module controls the puncture needle with the adjusted angle to puncture, and the measurement module measures in real time The puncture force and puncture depth of the needle. The present invention adopts intelligent control and real-time measurement of the measurement module to accurately control the puncture needle and achieve the beneficial effect of accurate and automatic puncture.

The invention belongs to the technical field of medical apparatus and instruments, and relates to a detachable skin-outer minimally invasive pedicle screw navigation device in combination with perspective. The navigation device is composed of N single templates (N is greater than or equal to 3), wherein each single template is provided with a left transverse connector and a right transverse connector, the left transverse connector is provided with a clamping block, the right transverse connector is provided with a clamping groove, and in use, the clamping block is inserted into the clamping groove, so that the left transverse connector and the right transverse connector form a whole; each template is further provided with a transverse perspective positioning needle guide hole, selective minimally invasive positioning needle guide holes, spinous process positioning needle guide holes and longitudinal perspective positioning needle guide holes, the transverse perspective positioning needle guide hole allows a transverse perspective guide needle to pass through, the selective minimally invasive positioning needle guide holes allow a positioning guide needle to pass through, the spinous process positioning needle guide holes allow a spinous process perspective positioning needle to pass through, and the longitudinal perspective positioning needle guide holes allow a longitudinal perspective guide needle to pass through. For the detachable skin-outer minimally invasive pedicle screw navigation device, the templates are completely placed outside the body, and the accuracy is improved through the assistance of perspective, so that radiation exposure and trauma of medical staff and patients are reduced.

A transseptal insertion device suitable for facilitating precise and safe transseptal puncture of a cardiac interatrial septum includes a sheath (12) that defines a lumen and has a distal end that isclosest to the cardiac interatrial septum of a patient and a proximal end that is external to the patent, a balloon (14) that is connected to the distal end of the sheath (12), in which the balloon (14), when inflated, overhangs and extends past the distal end of the sheath (12), preventing accidental puncturing of the cardiac interatrial septum and stabilizing the transseptal insertion device against fossa ovalis of the cardiac interatrial septum, and a dilator (16) that is positioned within the at least one lumen. The dilator (16) has a distal end and is designed to and is capable of precisely puncturing the cardiac interatrial septum without the use of a needle or other sharp instrument.

The invention discloses a venipuncture device and a venipuncture control method. The venipuncture device comprises a support frame, a locating component, a first clamping component and a second clamping component. The locating component is arranged on the support frame. The first clamping component is arranged in a first clamping component installing groove. The second clamping component is arranged in a second clamping component installing groove. The first clamping component and the second clamping component are used for clamping a puncture needle. The first clamping component and the secondclamping component are connected with the locating component. The puncture position of the patient is accurately found through the locating component and then the locating component drives the firstclamping component and the second clamping component to perform puncturing for the patient. According to the venipuncture device, the puncture position of the patient can be quickly and accurately found to complete venipuncture so as to reduce the labor intensity of the medical staff and reduce the pain to the patient caused by repeated puncturing.

The present invention specifically relates to an electromagnetic positioning navigation particle implantation trocar used for interventional operation. The electromagnetic positioning navigation particle implantation trocar comprises a puncture trocar, a hollow particle thimble and an electromagnetic positioning assembly; the puncture trocar comprises a hollow internal needle and an external needle which is through back and forth; the internal needle is pluggably disposed in the external needle; the front end of the internal needle is closed; the rear end of the internal needle is provided with an opening; the front end of the particle thimble is closed; the rear end of the particle thimble is provided with an opening; the particle thimble can be movably disposed in the external needle when cooperated with the external needle; the electromagnetic positioning assembly comprises an electromagnetic positioning sensor; and the electromagnetic positioning sensor can be pluggably disposed in the internal needle or in the particle thimble. Spatial positions of implanted particles can be objectively positioned in real time, particle distribution can be more accurate, and use cost can be reduced.

The invention provides an auxiliary location device and a location system for puncturing. The auxiliary location device comprises a first surface and a second surface, wherein a plurality of primary location points and a plurality of secondary location points are respectively distributed on the first surface and the second surface; one primary location point is determined as a puncturing point bycollecting image data of a target point and the primary location points, a connection line between the target point and the puncturing point extends to the second surface, one secondary location pointis determined through a cross point, and a puncturing point and a puncturing angle can be determined through determined primary location point and the determined secondary location point which are arranged on the same straight line as the target point. The location system comprises the auxiliary location device, medical imaging equipment and data processing device. According to the auxiliary location device and the location system for puncturing disclosed by the invention, the puncturing point and the puncturing angle are determined before puncturing, so that the target point can be accurately located, and the puncturing accuracy is improved; furthermore, puncturing can be performed under the state that scanning is stopped, and safety of a puncturing process is improved.

The invention discloses a visible puncture balloon device. A puncture needle tube is inserted into an axial through hole of a sleeve, an image channel allowing an image device to penetrate through isaxially formed in the puncture needle tube, connecting holes are formed in the two axial ends of a balloon, the hole wall of a connecting hole formed in one end of the balloon is fixed to the outer wall of the front end of the puncture needle tube, the hole wall of a connected hole formed in the other end of the balloon is fixed to the outer wall of the front end of the sleeve, the rear end of thesleeve closely cooperates with the outer wall of the puncture needle tube, fluid medium channels allowing fluid media to flow through exist between the outer wall of the puncture needle tube and theinner wall of the balloon and between the outer wall of the puncture needle tube and the inner wall of the sleeve, a fluid medium injection pipe is connected to the fluid medium channel formed betweenthe inner wall of the sleeve and the outer wall of the puncture needle tube, and a conical head is arranged at the front end of the puncture needle tube. The puncture needle tube is combined with theballoon, by means of a built-in or externally connected image device, the position of the balloon device punctured to a renal collecting system is seen clearly, and puncture is accurate. Puncture andexpansion can be completed through the same device, and multiple puncture is not needed.

The invention provides an auto-synchronous respiratory gating device and a control method. The device comprises a gating controller, wherein the gating controller comprises an air pressure detection module, a processor module, a communication module and an indication module; the collection end of the air pressure detection module is arranged at the pressure collection position of a corrugated pipedevice; the output end of the air pressure detection module is connected with the processor module; and the processor module is connected with an external host through the communication module. Compared with the prior art, the device has the advantages that the air pressure value corresponding to respiratory gating is collected through the gating controller and is sent to the external host and isadded with the time-stamp of the external host, and an air pressure value sequence with the time-stamp is formed; when the external host controls a host to prepare for performance of operation planning, and the respiratory gating respiratory amplitude corresponding to the corresponding time-stamp can be known according to the time information in an image file in the current operation planning, sothat a patient can be guided to hold breath, the breath holding state of the patient can be monitored, current respiratory gating position is synchronized with the respiratory position correspondingto the image planning, and puncture can be performed accurately.

A laser angle guide assembly has a stand, a laser guide and a reflector. The laser guide is mounted adjustably on the stand and has a body, a side index line, a front index line and an index protrusion. The side index line is formed on the side faces of the body. The front index line is formed on the front face of the body. The index protrusion is formed on the front surface at the bottom of the body and has an inclined top and a front face. The reflector is attached and inclined relative to the front surface of the laser guide at an angle and has a reflecting side facing to the inclined top of the index protrusion. Accordingly, the laser angle guide assembly can provide a guide effect to help a doctor to puncture a needle assembly at a desired angle precisely.

The invention aims to solve the problem of difficulty in accurate positioning and guiding during puncture in the prior art, and discloses a multi-point puncture positioning mechanism based on liver cancer radio frequency ablation. The mechanism comprises a guide rod, a protective layer, a supporting plate, an anti-slip layer, a pull ring, a baffle plate, a first spiral spring, a sliding rod, a clamp plate, a guide plate, a connecting block, a sliding block, a second spiral spring, a guide frame, a clamping plate, a positioning plate, a base, universal wheels, a supporting rod, a connecting rod, a holding ring, a lantern ring, a first fastening screw, a second fastening screw, an inner ring, an outer ring, a positioning rod, a mounting plate, a first laser lamp, a second laser lamp, a whiteboard, a fixing plate and a guide groove. The multi-point puncture positioning mechanism reasonably utilizes the cooperation of the first spiral spring and the second spiral spring to realize the pulling of the clamp plate on the skin of the obese patient, so that the loose proud flesh is supported tightly, and then accurate puncture is easier to be carried out during the puncture is carried out;and by combining the positioning and the guiding of the first laser lamp and the second laser lamp, it is convenient for the mechanism to carry out accurate puncture on the patient, and the mechanismmeets the social requirements.

The invention relates to the technical field of medical guiding puncturing, in particular to a guide-puncturing device and a using method. The guide-puncturing device comprises a guiding sheathing tube, an expansion tube, a guide wire and a puncturing needle. The guide wire comprises a supporting component. The end, stretching into human tissue, of the supporting component is a working end. A signal detection device is arranged on the working end. A wire is connected to the signal detection device. The other end of the wire extends to the outside of the human tissue along the supporting component and is connected with a signal receiving device. The signal detection device outputs different signals according to different kinds of human tissue with which the signal detection device makes contact, accordingly, whether the position of the signal detection device is a set puncturing position can be determined. Therefore, the puncturing position can be accurately found through the guide wire, the success rate of puncturing can be increased greatly, and pains of patients can be relieved. Meanwhile, dangers of being exposed to X-ray irradiation are greatly reduced for doctors and patients, and therefore the health of doctors and patients is protected while the puncturing needle is positioned and guided accurately.

The invention discloses a cardiovascular intervention device, which comprises a puncture device and a fixed device, wherein the puncture device comprises a needle tube; the needle tube is formed by threaded connection of a front end with a through hole, a plurality of sleeve tubes and a tail end with a rear wing; a membrane breaking tube is arranged on the top part of the front end; a needle head is arranged on one end, stretching out of the needle tube, of the membrane breaking tube; the other end of the membrane breaking tube extends into the needle tube; a push rod is arranged in the needle tube and is formed by threaded connection of a rubber plug, a plurality of sleeve tubes and a tail end with a push rod; a liquid storage cavity is arranged on one side of the front end of the push rod; a liquid inlet is formed in one side of the rubber plug; a through hole adaptive to the membrane breaking tube is formed in the rubber plug; a gauze sleeve is arranged on the through hole; a wire guide rod is arranged in the push rod; one end of the wire guide rod is communicated with the through hole; the other end tip of the wire guide rod extends out of the tail end with the push rod. According to the cardiovascular intervention device, doctors can operate more conveniently and accurately, blood is collected in a collection bag, the operation surface of the doctors is not polluted, the guidance of a guidewire is completed, meanwhile, the guidewire is disinfected, and the lengths of the needle tube and the push rod can be adjusted according to the needs.

The invention discloses an adjustable bent sheath tube. The adjustable bent sheath tube comprises a connected tube body and a connector, wherein the tube body sequentially comprises an inner tube, a steel tube and an outer tube from inside to outside in the radial direction, the steel tube is provided with a plurality of cutting gaps at intervals in the axial direction, the inner tube is providedwith a pull wire cavity and a conveying cavity, a pull wire is arranged in the pull wire cavity, and the head end of the pull wire is fixedly connected with the head end of the steel tube; and when tensioned, the pull wire drives the steel tube to bend. The invention also discloses a transjugular intrahepatic puncture system. The adjustable bent sheath tube can change the bending shape of the steel tube by tensioning or loosening the pull wire, the bent sheath tube is matched with the actual distribution condition of blood vessels of a patient, a purpose of accurately puncturing and conveyinginstruments is achieved, and the safety and effectiveness of the operation are improved.

The invention provides an automatic infusion system based on infusion hanging bottle rotation. The infusion system comprises a control device, a bracket, a rotating mechanism, a lifting pushing rod and a drug injection metering device; a turntable is connected with an output rotating shaft of the rotating mechanism, and at least 2 hanging bottle positioning clamping mechanisms are arranged on theturntable in an eccentric mode; a puncture needle clamping mechanism for clamping a puncture needle in an infusion device is connected with the lifting pushing rod; the hanging bottle positioning clamping mechanisms are used for positioning and clamping the infusion hanging bottle; the bracket is used for raising the turntable; the drug injection metering device is used for acquiring real-time information of single bottle cumulative infusion amount of the infusion device; the control device is used for receiving the real-time information of the single bottle cumulative infusion amount of the infusion device and comparing with the capacity of the infusion hanging bottle, when the single bottle cumulative infusion amount reaches a threshold, the control device instructs the lifting pushing rod to descend and pull out the puncture needle, the control device then instructs the rotating mechanism to rotate and drives the infusion hanging bottle to rotate through the turntable and the puncture needle clamping mechanism, after the infusion hanging bottle is in place, the puncture needle is inserted into the replaced infusion hanging bottle, and continued infusion is achieved.