165results about How to "Improve the success rate of puncture" patented technology

The invention belongs to the technical field of medical instruments and relates to a detecting system for a near-infared body surface blood vessel detector. The detecting system comprises a digital photography device and a moving projection device. The digital photography device and the moving projection device are in mutual connection and data transmission through a bus control unit, a near-infared lens is installed on the digital photography device and comprises a near-infared filter, and the near-infared filter blocks visible light, lets near-infared light pass and is a bandpass filter. The detecting system for the near-infared body surface blood vessel detector can help professional medical workers to observe body surface blood vessels of a patient, can display blood information such as flow velocity and flow direction at the part in real time, and has a certain curing promoting effect on body surface wound healing and thrombus ablation of superficial layer veins. In clinical application, the detecting system provides great convenience for the medical workers and is of revolutionary significance. The detecting system has good application prospect in the technical field of medical instruments.

The invention discloses an intelligent integrated field operation transfusion device which comprises an intelligent transfusion unit arranged in a box body, a liquid bag, an injector and a sterilization excipient, wherein the box body comprises a front panel and a bottom plate, a rotating shaft is arranged between the front panel and the bottom plate, the box body is internally provided with a plurality of independent partition regions comprising partition plates; the partition regions are internally provided with the intelligent transfusion unit, the liquid bag, the injector, the sterilization excipient and a sewage box; the intelligent transfusion unit comprises an LED display screen arranged on an upper panel of the box body, an LED operation control panel, a singlechip, a bubble detector, a peristaltic pump, an electromagnetic flowmeter and a transfusion pump control unit, wherein the singlechip, the bubble detector, the peristaltic pump, the electromagnetic flowmeter and the transfusion pump control unit are arranged in one partition region; transfusion excipient comprises a tourniquet, a bath mat, four iodophor cotton swabs and four rubberized fabrics; a packaging card is at least provided with three object regions, and the tourniquet, the bath mat, the four iodophor cotton swabs and the four rubberized fabrics are respectively arranged on respectively independent object regions. The intelligent integrated field operation transfusion device is 40 percent of the common transfusion device, realizes integration, and ensures that the transfusion therapy is rapid and convenient.

The embodiment of the invention discloses an intelligent puncturing method. The intelligent puncturing method is characterized by comprising the steps of obtaining a scanning image of a puncture needle for a target lesion region in the puncturing process; recognizing the puncture needle in the scanning image; according to the target position of the puncture needle, drawing a puncturing trajectory; judging whether the puncturing trajectory intersects with the target puncturing region or not, wherein the target puncturing region represents the target lesion region; if the puncturing trajectory intersects with the target puncturing region, controlling the puncture needle to be inserted along the puncturing trajectory until reaching the target puncturing region. The embodiment of the invention further discloses an intelligent puncturing device. According to the intelligent puncturing method and device, intelligent puncturing is achieved, the puncturing efficiency and success rate are improved, and pain of a patient is effectively relieved.

The invention discloses a tumor interventional therapy device, which comprises a guiding catheter, a puncture tube, a needle, an outer sleeve and a push rod, wherein the tail end of the guiding catheter is in threaded connection to the front end of the outer sleeve by virtue of a hard threaded connecting pipe; the guiding catheter is a rubber pipe, and the guiding end of the guiding catheter is of a spherical structure; a plurality of blood suction tubes are arranged in the guiding catheter; each blood suction tube runs through the outer wall of the guiding catheter and is connected to a corresponding gourd-shaped airbag; the puncture tube and the needle are integrally molded, and the puncture tube is connected to the push rod by virtue of a screw thread; the push rod is connected to an armrest by virtue of a connecting rod; a disinfecting cavity is formed in the outer sleeve; a port, which is used for changing disinfecting cotton, is formed in one side of the disinfecting cavity; sliding rails are symmetrically arranged on the inner walls of the upper and lower sides of the outer sleeve; two sides of the push rod are movably connected to the sliding rails by virtue of sliding blocks which are provided with servo devices; and a pressure sensor is additionally arranged in the outer sleeve. When the therapy device disclosed by the invention is used, surrounding tissues can be clearly observed and a puncture depth can be accurately controlled; and the therapy device is convenient to use, high in puncture success rate and high in automation degree.

The invention relates to a three-dimensional positioning guiding gauge for puncture, which consists of a master member and a suite. The master member and the suite have three edges; a face between a first edge and a second edge is a front face, and a face between the second edge and a third edge is a lateral face; the master member and the suite are divided into two symmetrical and equal ends through a zero line, and can be used bidirectionally; and the suite is sleeved on the master member, the inner face of the suite is attached to the outer face of the master member without gaps, the front face and lateral face of the suite correspond to those of the master member, and the suite can slide on the master member back and forth. The three-dimensional positioning guiding gauge is used for improving puncture success rate and accuracy and avoiding puncturing repeatedly to reduce exposure times and radiation damage; and puncture side-open distance, angle degree and puncture depth are accurate further, so that surgical doctors have the visual sense of space in the puncture operation, and the puncture success rate and accuracy are improved. The three-dimensional positioning guiding gauge is suitable for the use and reference of doctors in departments of orthopedics, spine surgery, pain treatment, intervention and neurology, and has the advantages of simple structure, convenient use and popularization, wide application and low manufacturing cost.

The invention discloses a multi-temperature-regulation massaging device for hemodialysis. The multi-temperature-regulation massaging device for hemodialysis has powerful functions and can be used for effectively heating and keeping heat of a punctured blood vessel of a hemodialysis patient and promoting hemangiectasis, and the puncturing success rate is improved; the punctured blood vessel of the patient can be massaged through simple operation, edema liquid of a punctured part is eliminated and the blood vessel is exposed, so that the puncturing success rate is improved and pains of the patient are alleviated. The hematoma of the punctured part of the patient can also be subjected to cooling treatment and blood capillaries are retracted through cold application, so that partial hyperemia and bleeding are alleviated and the limitation of edema is facilitated. The device is used for carrying out hot application and massaging on the punctured parts including internal fistula and the like of the patient in combination with corresponding medicines, and partial blood circulation can be facilitated; the permeability of tissue cells is improved and the medicines can be easily absorbed; the elimination of the hematoma is accelerated and the absorption of the hematoma is promoted; damaged tissues are stimulated to regenerate and scars are softened; an vascular access of the patient is effectively protected and the living quality of the patient is improved.

An artery puncture needle comprises a light-transmission cannula seat, a remaining needle outer cannula, a steel needle seat and a steel needle. A tubular pressure measuring joint is arranged at the rear end of the light-transmission cannula seat, the remaining needle outer cannula is opposite to the pressure measuring joint and arranged at the front end of the cannula seat, the steel needle is disposed on the steel needle seat, a holding groove which is respectively communicated with the remaining needle outer cannula and the pressure measuring joint is formed in the cannula seat, an elastic stop block which can be operated to slide between a puncture position and a pressure measuring position is movably assembled in the holding groove, a pressure measuring channel which runs through transversely is formed on the stop block, and a blood draining hole which is communicated with the holding groove is formed on the cannula seat. The artery puncture needle has the advantages that the artery puncture needle is simple in structure, convenient in operation, capable of preventing blood from spraying outwards, high in puncture success rate, accurate in pressure measurement, convenient in blood collection, and the like.

The invention provides a vein puncture needle which comprises a conduit, a needle probe, a needle holder, a needle handle, and a needle retreating component on the needle handle. The needle retreating component utilizes an operation and control component to control a displacement component to make the needle probe displace in steps and to conveniently allow a second propulsion conduit to enter the proper position of a patient's vein, therefore, raising the success rate of vein puncturing of the puncture needle. The needle retreating component provided by the vein puncture needle has a simple structure and the use of functions is made in a proper order, which not only raises the success rate of vein puncturing of the puncture needle but also effectively protects medical workers from being accidentally injured after the use of the puncture needle.

The invention discloses a rapid blood glucose monitoring needle. The rapid blood glucose monitoring needle is used in cooperation with a remaining needle. The rapid blood glucose monitoring needle comprises a needle seat, a protective cap, a monitoring needle body and test paper. The needle seat comprises a needle seat inner cavity and an air cabin located on the side wall of the needle seat inner cavity and formed by a movable plate. The air cabin is communicated with the needle seat inner cavity through a connector arranged on the side wall of the needle seat inner cavity, a blood sampling groove is formed in the front end of the test paper and stretches into the needle seat inner cavity, the rear end of the test paper is provided with an induction sheet connected with a blood glucose meter, the induction sheet is arranged on the outer side of the needle seat inner cavity, the monitoring needle body is fixed to the front end of the needle seat and communicated with the needle seat, and the front end of the monitoring needle body penetrates through the protective cap detachably connected with the remaining needle and then stretches into a soft catheter of the remaining needle. Due to the fact that blood is sampled through the remaining needle, a blood sample is tested on a site, repeated puncture on the skin of a patient is avoided, the monitoring rate of vein blood glucose is greatly increased, and the mistaken puncture harm to an operator is avoided.

The invention provides a portable far-infrared limb vascular puncture auxiliary system. The portable far-infrared limb vascular puncture auxiliary system comprises an infrared emitter, an image pickup system and a monitor; the infrared emitter comprises a plurality of infrared LEDs, an aluminum substrate, a condenser lens, an LED constant current control circuit drive board and two direct current power supplies. More than one infrared LED is welded at the front side of the aluminum substrate; the condenser lens is arranged at the front side of the aluminum substrate; the LED constant current control circuit drive board and female contacts of two direct current power supplies are arranged at the back of the aluminum substrate; the image pickup system is an infrared sensitive video camera provided with an infrared low-light lens; and the image pickup system is electrically connected with the monitor. By using the infrared sensitive video camera provided with the infrared low-light lens, even at severe environment, the invisible infrared radiation light can be sensed and converted into a measurable signal to assist the puncture.

The invention relates to a puncture robot, a main hand controller and a force feedback puncture needle inserting controller. The force feedback puncture needle inserting controller comprises a shell, a puncture executing mechanism, a signal transmission mechanism and a force feedback mechanism, wherein the shell is of a hollow columnar structure; the puncture executing mechanism is arranged on the shell, and the puncture executing mechanism is used for puncture needle inserting control; the signal transmission mechanism adopts a photoelectric communication mode to realize signal transmission, the puncture executing mechanism can block or conduct a transmission signal of the signal transmission mechanism, and the puncture executing mechanism is controlled to execute puncture operation through signal change generated by blocking or conducting the transmission signal of the signal transmission mechanism; and the force feedback mechanism is used for feeding back the needle inserting resistance of a puncture tail end to the puncture executing mechanism. Clinical puncture working conditions are truly simulated, so that medical staff can feel the resistance when the puncture needle is inserted.

The invention discloses a medical auxiliary device for infusion and relates to the technical field of medical instrument. The device of the invention comprises an adjusting device and an extending device, wherein the adjusting device is fixedly provided with a base plate at the bottom; a storage device is fixed on a surface of the base plate; the adjusting device comprises a rotating disk; an elevating mechanism is fixed on a top of the rotating disk; a support frame is fixedly provided with a top end of the elevating mechanism and a cylindrical shell is fixed on a top of the support frame; anadjusting airbag is fixed inside the cylindrical shell; the extending device comprises a support frame and a chute is opened in inner walls at two sides of the support frame. According to the invention, the cooperation of the adjusting device and the extending device makes hands of a patient be positioned in proper positions during puncturing and the hands are fixed and supported to avoid movement of hands and arms due to stress reaction during the puncturing, thereby increasing the success rate of puncturing. by means of the device, more comfortable puncturing position is provided and the manual power consumption for medical care personnel is reduced; at the same time, adjusting the airbag can give the arm the proper pressure, so that the vein expands without excessive restraint.

The invention discloses a device for preventing tumor spread after bone tumor biopsy, and belongs to the technical field of medical apparatuses. The device comprises a puncture needle, a sleeve and asampling needle; a sampling coil is fixedly connected to the outer wall of the sampling needle, multiple sampling scraping barbs are fixedly connected to the side wall of the sampling coil, a temporary storage cavity is formed in the sampling needle and located at the bottom of the sampling coil, and the puncture needle sleeves the outer wall of the sampling needle. A sealing platform is fixedly connected to the top of the puncture needle, a liquid injection channel is formed in the middle of the sealing platform, a rubber ring is fixedly connected to the end of the liquid injection channel, asealing gasket is fixedly installed at the junction of the sampling needle and the puncture needle, a sleeve sleeves the outer wall of the puncture needle, a positioning device is fixedly connected to the top of the sleeve, a push needle is matched in an inner cavity of the puncture needle, a fixed needle is fixedly connected to the end of the push needle, and a plug sleeves the outer wall of thefixed needle. By means of the device, the puncture depth is conveniently controlled. Examination tissue cannot shed or get lost, and the puncture success rate is increased. The plug absorbs drugs toplug a puncture channel, a needle passage is subjected to bleeding stopping, and tumor spread is prevented.

The invention discloses an ultrasonic guided puncture and nerve block auxiliary positioning device. The device comprises an adjusting mechanism and a positioning mechanism, the adjusting mechanism iscomposed of a supporting bed plate, a transverse sliding groove, a transverse lead screw, a transverse sliding block, a transverse motor, a reset groove, a headrest, a supporting table top, a displayscreen and a computer host; the transverse sliding groove is dug in one side of the supporting bed plate, the transverse lead screw is rotatably connected into the transverse sliding groove, the transverse sliding block is slidably connected into the transverse sliding groove, the transverse lead screw penetrates through the middle of the transverse sliding block, and the transverse lead screw isin threaded connection with the transverse sliding block. An infrared auxiliary device and a positioning mechanism are arranged; by combining computer integration, a puncture needle and a scanning section can reach a plane more easily, the development effect is improved, information is input in advance when a certain position needs to be punctured, the computer can give a prompt at the position closest to the puncture position, the puncture success rate is increased, and complications and anesthetic dosage are reduced.

The invention provides a positioning auxiliary device for a peripheral arteriovenous puncture indwelling catheter. The positioning auxiliary device for the peripheral arteriovenous puncture indwelling catheter comprises a bottom plate, a support and a positioning structure; and the positioning structure is arranged on one side of the support. According to the positioning auxiliary device for the peripheral arteriovenous puncture indwelling catheter provided by the invention, the positioning structure is arranged and can be used in cooperation with the puncture indwelling catheter; the positioning auxiliary device serves as an auxiliary positioning structure of the puncture indwelling catheter; assistance is provided for practice medical staff; the puncture indwelling catheter is effectively positioned when arteries of a patient are punctured; the practice medical personnel only need to push the puncture indwelling catheter to move; the puncture indwelling catheter does not need to be held by hands to move all the time; then, the direct contact area of the hand and the puncture indwelling catheter is greatly reduced; even if the conditions of hand shaking, hand slipping and the like due to tension occur, the influence on the puncture indwelling catheter can be reduced to the minimum; and therefore, the puncture indwelling catheter always moves in a relatively stable state, so that the puncture success rate is greatly improved.

The invention discloses a tumor non-vascular interventional therapy apparatus belonging to the technical field of medical equipment. The tumor non-vascular interventional therapy apparatus comprises a casing pipe, wherein the left side and the right side of the top of the casing pipe are respectively provided with a stretchable apparatus, a puncture pipe is arranged in an inner cavity of the casing pipe, the top of a chemical cavity is provided with an injection opening, the left side of the casing pipe is connected with a supporting arm, the bottom of a handle is provided with a baffle plate, the left side wall of the supporting arm is provided with a control switch, the right side of a micro spraying machine is connected with a spray nozzle, the outer wall of the left side of the inner casing pipe is provided with a scale line, and the control switch is respectively and electrically connected with the stretchable apparatus and the micro spraying machine. By adopting the tumor non-vascular interventional therapy apparatus, peripheral tissues can be clearly observed, the puncture depth can be accurately controlled, the use is convenient, the puncture success rate is high, the automation degree is high, the working efficiency is greatly improved, the cross infection accident of the working personnel is avoided, and the life safety of the working personnel is guaranteed.

The invention relates to the field of mechanical facilities, in particular to a fingerstall type ultrasonic probe which is used for coordinating puncture operation. The fingerstall type ultrasonic probe comprises a casing, a connection device and a transducer. The casing comprises a tube-sleeve-shaped fingerstall and a casing body, wherein the casing body is fixed on the excircle side of the fingerstall. A cavity is formed in the casing body, a hole is formed in the bottom of the casing body, the transducer is installed in the casing body, and an acoustic window of the transducer is corresponding to the hole of the casing body. The connection device can move in the circumferential direction of the fingerstall after one end of the connection device is connected with the fingerstall, and the other end of the connection device is fixedly connected with the casing body. The fingerstall type ultrasonic probe is small in size; doctors can perform ultrasound detection and puncture operation simultaneously after they sleeve the probe in their fingers, and thus the operation steps are simplified. During operation, the expected effect can be achieved by slightly moving the fingerstall type ultrasonic probe, and the puncture success rate is improved. The connection device capable of moving in the circumferential direction of the fingerstall is additionally arranged between the casing body and the fingerstall so the detection area of the probe is enlarged and the problem of small probes of being limited in the field of view is solved.

The invention discloses an intraspinal anesthesia position fixation support comprising a support body, a clamping body and a curved rod connected to the support body and the clamping body. The free end of the support body can realize up-down adjustment as well as front-back adjustment. The support is fixed to the side barrier of an operation bed and performs fixation through the clamping body, the curved body enables the support body to move forward by a certain distance, when a patient puts the jaw on the support body, the body of the patient is arched, and the stretching degree of the intervertebral space of the patient is mostly beneficial for puncture operation for intraspinal anesthesia. Up-down and front-back movement of the jaw, up-down movement of footrests and effective fixation on the side barrel of the operation bed are realized. Through the curved rod with certain radian, when the jaw of the patient is put in a jaw holder, the back is arched to facilitate puncture operation of intraspinal anesthesia performed by doctors, so that success rate of puncture in intraspinal anesthesia is increased, and the support is particularly suitable for obese patients and patients having difficulty in intraspinal anesthesia puncture.

The present invention relates to medical detecting device, and is especially one kind of dura mater external pressure detecting mechanism, method and device. The present invention features that the dura mater external pressure signal the dura mater external pressure detecting mechanism detects is first fed to the signal detection unit for filtering and amplifying and then to the signal processing unit for processing in the processor, and the signal processing unit compares the read negative dura mater external pressure value with the set value before outputting the detected dura mater external pressure value and outputting the alarm signal if necessary. The present invention makes it possible to understand the dura mater external pressure easily in epidural anesthesia for successful epidural anesthesia.

The invention relates to medical injection equipment, in particular relates to a Y-type blood-return cavity device and an artery puncture needle comprising the same. The type-Y blood-return cavity device comprises a puncture needle seat connector, a guide wire slide rail connector and a blood return cavity branch, wherein the puncture needle seat connector is fixedly communicated with the guide wire slide rail connector, and the blood return cavity branch is communicated to the side edge of the guide wire slide rail connector. The artery puncture needle comprises an indwelling sleeve, a puncture steel needle and a type-Y blood return cavity device. The artery puncture needle can replace an exhaust connector of the type-Y blood return cavity device, so that the puncture cost is reduced, and the puncture success rate is increased.

The invention discloses a mouse islet separation and purification method. A self-made puncture needle is adopted to reversely puncture a common bile duct and inject collagenase V to digest a pancreatic gland, and inslets are separated and purified by using the combination of density gradient medium centrifugation and manual sorting. Inset density is identified by dithizone staining, and inset activity is identified by AO / PI staining. Inset functionality is detected by a glucose stimulated insulin release experiment. By using the method to extract islets on a large scale, time can be greatly saved, the puncture success rate can be increased, and Ficoll400 formulation time and price can be reduced. In addition, all the yield, purity, activity and function of islets obtained by purification are relatively good, and the method is simple, fast, cheap and efficient.

The invention discloses a clinic treatment device for the neurology department. The clinic treatment device comprises a U-shaped plate and is characterized in that the opening of the U-shaped plate isleftward, a screw hole in the lower surface of the U-shaped plate is connected with a second screw in a threaded manner, a handle is fixed to the lower end of the second screw, the upper end of the second screw extends into the clamp groove of the U-shaped plate, the upper surface of the U-shaped plate is provided with a hemostasis device, the upper surface of the U-shaped plate is fixedly connected with the lower end of a slide rod, the slide rod is slidably connected with a slide hole in the slider, and a fastening bolt is mounted on the right side of the slider. The clinic treatment devicehas the advantages that the height and angle of a support arc-shaped plate can be conveniently adjusted, a contact arc-shaped plate contacts with the to-be-punctured part of a patient, the to-be-punctured position of the skin of the patient is located in a long through hole, the to-be-puncture part of the patient is less prone to shaking, puncture success rate is increased, and doctor work efficiency is increased; clamping columns can be separated from clamping holes in the support arc-shaped plate when a doctor leftwards pulls the contact arc-shaped plate, and the contact arc-shaped plate can be replaced conveniently to prevent cross infection.

The invention discloses a puncture method of an artery puncture needle for invasive arterial blood pressure monitoring. The puncture method is characterized by comprising the following steps: (1) preparing materials; (2) connecting an invasive arterial blood pressure monitoring device; (3) checking whether the invasive arterial blood pressure monitoring device is normally connected; (4) determining an artery pulsation point; (5) disinfecting the skin; (6) puncturing; (7) judging whether the puncture is successful; and (8) extracting a steel needle after successful puncture, sending a soft needle to a vessel position, and finally fixing an artery puncture needle. The puncture method can realize digitized guidance of operation through arterial blood pressure waveforms on a monitor and judge whether puncture of the artery puncture needle is in place according to the arterial blood pressure waveforms on the monitor; and the whole puncture process is performed in a closed manner, so that blood overflow is prevented, puncture points are protected against contamination, the puncture success rate is high, and the puncture time is short.

The invention relates to a medical sacral nerve puncture localizing and guiding system which comprises an open main framework. A computer host, a first display screen and a keyboard are arranged on the open main framework, and the first display screen and the keyboard are connected with the computer host; an arc-shaped frame is connected with a side of the open main framework, and an inner ring of a cambered surface of the arc-shaped frame faces downwardly and is provided with a slide rail; a first projection and acquisition box and a second projection and acquisition box are slidably arranged on the slide rail; miniature projectors, image acquisition units and beam concentration light sources are arranged in the two projection and acquisition boxes; the beam concentration light sources of the two projection and acquisition boxes point to the circle center of a circle where the cambered surface is located and are not parallel to each other; a second display screen which is connected with the computer host is further arranged on the side, where the arc-shaped frame is located, of the open main framework. The medical sacral nerve puncture localizing and guiding system has the advantage that the technical problem that sacral nerve puncture mainly still depends on subjective experience of surgeons in existing sacral neural regulation surgery procedures and is difficult to complete even after test puncture once or by a plurality of times can be solved.

The invention relates to a novel artery puncture trocar, which comprises a needle tube and a core, wherein one end of the core is connected with a detachable handle, and a core cap is connected on the handle; the needle tube can be penetratively sleeved outside the core in a replaceable way, and tip of the core is exposed out of the needle tube. The novel artery puncture trocar has the beneficial effects of high puncture success ratio, and safer and more convenient puncture.

The embodiment of the invention provides an ultrasonic out-of-plane blood vessel puncture auxiliary robot which comprises an image recognition processing unit used for analyzing and calculating a blood vessel real-time image of a puncture target area and obtaining blood vessel contour shape data and blood vessel center position data; a puncture navigation unit for calculating a preferred punctureposture and a preferred puncture path based on the blood vessel contour shape data and the blood vessel center position data; a motion planning unit used for calculating motor control parameters required for adjusting the puncture needle from the current posture to the optimal puncture posture based on the optimal puncture path; and a motion control unit used for controlling the motor driving unitbased on the motor control parameters, driving the puncture needle to move to the optimal puncture posture and carrying out puncture along the optimal puncture path. Wherein the units are sequentially connected. According to the embodiment of the invention, the complication risk of an out-of-plane puncture technology can be effectively avoided, and the puncture success rate is effectively improved.

The invention relates to a medical device and disclosed is a subcutaneous buried puncture device for arteriovenous puncture in hemodialysis, including an arterial end, a venous end, a puncture island,a venous puncture part, an arterial puncture part and a vasospasm, the venous puncture part and the arterial puncture part are arranged on the puncture island, a layer of puncture film is detachablyinstalled on the top of the venipuncture part and the arterial puncture part. The venipuncture part is communicated with the venous end, the arterial end is communicated with the arterial puncture part, and the blood vessel loop between the venipuncture part and the arterial puncture part is communicated, so that the arteriovenous short circuit can be realized, and sufficient blood flow can be ensured after the puncture island is connected. The device is implanted subcutaneously in the forearm of the patient and consists of an arterial end, a venous end, a puncture island and a vasospasm to replace a patient who currently needs an artificial blood vessel. Compared with the prior art, the invention has the advantages of convenient puncture, effective prevention of infection, long service life, replaceable puncture membrane and the like.

The invention relates to a concentric tumor located puncture apparatus and belongs to the field of medical apparatus and solves the problem that tumor precise located puncture cannot be performed in a three-dimensional space in the prior art, and the tumor located puncture precision and tumor diagnoses and treatment effect are severely affected. The key point of the technical solution is as follows: superposing the center of circle with the center of a tumor by three-dimensional movement and performing puncture by a puncture needle along a radius of sphere taking the center of circle as the centre of sphere. The apparatus primarily aims to improve the tumor located puncture precision and puncture success rate, expands the tumor puncture path selecting range, effectively avoids important tissues and organs and reduces the complications, so that the tumor diagnoses and treatment effect is further improved.

The invention discloses a PICC (Peripherally Inserted Central Catheter) hand holder. The PICC hand holder comprises a long strip-shaped infusion plate consisting of a fixed plate and a movable plate, wherein a rotating shaft is arranged between the fixed plate and the movable plate; the movable plate can move within a certain rotation angle by taking the rotating shaft as a rotating point; a plurality of elastic belts for fixing an arm are arranged on the infusion plate at intervals along the length direction of the infusion plate. The PICC hand holder provided by the invention is used for placement and fixation of abduction of upper limbs during PICC puncture and supporting and fixation during catheter maintenance; by using the holder, on the one hand, the stability of limb placement during tube insertion can be improved, the control over a puncture angle is facilitated, and the success rate of puncture is improved; on the other hand, when the holder is used for maintaining a catheter, the comfortableness of a patient can be improved, the incidence of pull and slippage of the catheter is reduced, and pains and expenses of the patient are directly reduced.

The invention discloses an arterial blood gas collector special for a child, and relates to the technical field of medical instruments. The gas collector solves the problem that the child is active and uncooperative in the arterial blood collecting process, the holding puncture may break the artery easily and leads to puncture failure, even forming local hematoma. The arterial blood gas collectorincludes a syringe, an extension hose and a needle body. The needle body portion is provided with a needle wing convenient to operate and flexible to move, and an anticoagulant is stored in the syringe. One end of the extension hose is fixedly connected with the needle body, and the other end is provided with a connector connected to a syringe port in the insertion mode. The gas collector has theadvantage that a medical worker can conveniently collect the arterial blood of the child, enhance the success rate of the arterial blood collection of the child, and reduce the pains suffered by the child during the blood collection process.