36results about How to "Reduce the difficulty of piercing" patented technology

The invention relates to a venipuncture system with infrared guidance and ultrasonic location. The venipuncture system is characterized by comprising an infrared guidance unit and an ultrasonic location unit, wherein the infrared guidance unit comprises an infrared light source, a signal acquisition unit, an infrared image processing unit, an image projection unit and an infrared image display unit; the ultrasonic location unit comprises a high-frequency ultrasonic probe, an ultrasonic image processing unit, an ultrasonic image display unit and a puncture needle connection frame fixed on the ultrasonic probe. According to the system provided by the invention, superficial vein blood vessels can be positioned and displayed through infrared imaging, and the depth of the vein blood vessels also can be identified through the ultrasonic unit under the guidance of an infrared image, so that a needle entering angle and the depth of a puncture needle can be observed in real time, and furthermore, the venipuncture difficulty is reduced and the puncture precision is improved.

The invention provides a deep sealing type hole sealing device which can solve the technical problem that a traditional hole sealing device is complex in process and cumbersome in operation. The deep sealing type hole sealing device comprises a suction pipe and a grouting pipe, wherein the suction pipe and the grouting pipe are arranged in parallel, two sealed bags are arranged at the two ends of a hole sealing segment of the suction pipe and the grouting pipe respectively, the bag close to a hole opening is a hole opening bag, the bag close to a hole bottom is a hole bottom bag, the bags wrap the suction pipe and the grouting pipe, the tail end of the grouting pipe is sealed and arranged at the bottom of the hole bottom bag, a one-way valve is arranged at the position, in the corresponding bag, of the grouting pipe, and an explosion valve is arranged between the two bags. The deep sealing type hole sealing device further comprises a floral pipe, wherein the floral pipe is provided with a plurality of notches, one end of the floral pipe is fixed to the outer portion of the bottom of the hole bottom bag, a sharp cone is arranged at the other end of the floral pipe, the tail end of the suction pipe stretches out of the bottom of the hole bottom bag to be connected into the notches of the floral pipe, and the end, close to the hole bottom, of the suction pipe is provided with a plurality of holes. According to the deep sealing type hole sealing device, casing installation, hole sealing and drainage are integrated, so that convenience is achieved, and operation procedures are reduced.

The invention relates to automatic puncture equipment. The automatic puncture equipment comprises a machine base, a moving device, a vein puncture device, a detection device, a puncture area positioning platform and an analysis device, wherein the analysis device determines a puncture needle inserting point, a needle inserting parameter and a puncture target point according to a detection image acquired by the detection device, physical sign parameters of a target human body corresponding to a puncture area and pre-stored medical data, and the moving device drives the vein puncture device to move to the puncture target point determined by the analysis device; and a puncture needle is arranged on the vein puncture device, and the vein puncture device punctures the puncture needle into a vein blood vessel according to the needle inserting parameter. According to the technical scheme, the vein blood vessel and the puncture needle inserting point can be automatically recognized, the needleinserting parameter and the puncture target point are automatically calculated, then vein puncture is automatically performed, manual puncture operation errors are avoided, the blood vessel puncturedifficulty is reduced, and remarkable advantages are achieved for some blood vessels which are difficult to recognize.

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 relates to a CT coplanar puncture template provided with identifier guiding devices. The CT coplanar puncture template comprises a plate body, puncture needle holes, marking lines and lead wires, wherein the puncture needle holes are uniformly distributed in the plate body in rows and columns; the marking lines are arranged on the portions, positioned between any two rows of puncture needle holes and positioned between any two lines of puncture needle holes, of the surface of the plate body; the lead wires are embedded in portions, right below the marking lines, of the plate body; and the lead wires are consistent with the marking lines in length and are parallel with the marking lines. According to the coplanar puncture template provided with the identifier guiding devices, puncture directions of puncture needles can be precisely guided, the template can be placed in accordance with the position and size of a focus before an operation so as to avoid dangerous organs around the focus, the puncture needles can be precisely inserted, and by virtue of the template, the various puncture needles can be kept under a parallel state. The CT coplanar puncture template can shorten an operation time, reduce operation risks and reduce operation difficulty. The template is provided with the guiding lead wires as the puncture needle guiding devices, so that a doctor can intuitively predict moving trends of the puncture needles before inserting the puncture needles, and therefore CT scanning times and puncture difficulty are further reduced.

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 the technical field of medical instruments, and particularly discloses a nursing device for hemodialysis rooms. The nursing device comprises an air tank and a support. A holding groove is formed in the support, an airbag pad and an airbag strap are arranged in the holding groove, and the airbag pad is communicated with the air tank through a hose. A solenoid valve is arranged on the hose, an air compressor is communicated with the air tank, a heater and a cooler are arranged in the air tank, a first pressure sensor and a temperature sensor are arranged in the airbag pad, and an electromagnetic vent valve is arranged on the airbag strap. A sliding frame is arranged at the top of the support, a puncture guide component fixedly arranged on the sliding frame comprisesa fixing seat and a guide plate, a sliding rod is fixed to the fixing seat and is connected with the guide plate, a needle guide groove is formed in the guide plate, and an alarm electrically connected with a deformation sensor is arranged in the support. The nursing device has the advantages of simple structure, easiness in operation, high degree of automation, high energy utilization rate, longservice life, multifunction and greatly reduced nursing difficulty.

The present invention relates to a superficial vein puncture auxiliary system guided by infrared and ultrasonic positioning, characterized in that the puncture system includes an infrared guiding unit and an ultrasonic positioning unit, and the infrared guiding unit includes an infrared light source, a signal acquisition unit, and an infrared image processing unit , an image projection unit, an infrared image display unit, the ultrasonic positioning unit includes a high-frequency ultrasonic probe, an ultrasonic image processing unit, an ultrasonic image display unit, and a puncture needle connecting frame fixed on the ultrasonic probe. The system can not only locate and display superficial veins through infrared imaging, but also identify the depth of veins through the ultrasonic unit under the guidance of infrared images, so as to realize real-time observation of needle insertion angle and depth of puncture needles, reducing the risk of venipuncture. Difficulty, improve puncture accuracy.

The invention relates to the technical field of medical instruments, and discloses a puncture angle adjusting device and a puncture auxiliary robot, the puncture angle adjusting device comprises a base, and a lead screw mechanism and a connecting rod mechanism arranged on the base; the lead screw mechanism comprises a lead screw and a nut arranged on the lead screw in a sleeving mode. The lead screw is rotationally arranged on the base around the axis of the lead screw so as to drive the nut to do linear motion along the axis of the lead screw. The connecting rod mechanism comprises a transmission connecting block, a push rod and a rotating rod, one side of the transmission connecting block is connected to the nut, and the other side of the transmission connecting block is rotationally connected to one end of the push rod; the other end of the push rod is rotationally connected to the first connecting end of the rotary rod, the second connecting end of the rotary rod is rotationally connected to the base, and the third connecting end of the rotary rod is used for being connected with a puncture needle assembly. The puncture angle adjusting device can achieve continuous adjustment of the puncture angle by arranging the lead screw mechanism and the connecting rod mechanism, and has the advantages of being high in angle adjusting precision, long in service life, compact in structure and small in size.

The invention discloses an ultrasonic out-of-plane puncture guide stent, and relates to the technical field of medical instruments. The ultrasonic out-of-plane puncture guide stent comprises a fixing seat and a puncture frame. Openings are formed in the upper end and the lower end of the fixing seat, through grooves are formed, the outer side of an ultrasonic probe is sleeved with the through grooves, and the through grooves are used for fixing the ultrasonic probe; the puncture frame is vertically arranged in the center of the side wall of the fixing seat and comprises a puncture frame body, scale marks are arranged on the side wall of the puncture frame body, a sliding groove is formed in the top of the puncture frame body, and a guide needle sliding block is arranged in the sliding groove in a sliding mode; and the upper surface of the guide needle sliding block is provided with at least two guide needle channels which penetrate through the lower bottom face of the guide needle sliding block and are used for guiding and fixing puncture needles, and needle outlets of the guide needle channels face the central axis of the ultrasonic probe. According to the guide stent, operation is convenient, the puncture direction, the puncture angle and the puncture depth are convenient to control, the difficulty and the workload of a doctor for puncture are greatly reduced by setting a buzzer early warning function, the accuracy and the efficiency of puncture are improved, and the pain of a patient is relieved.

The invention relates to a veinpuncture device and method. The device comprises a controller, a puncture mechanical arm and photoacoustic imaging equipment connected with a first slide rail, wherein the puncture mechanical arm and the photoacoustic imaging equipment are connected with the controller, and the photoacoustic imaging equipment comprises a short pulse laser generator and an ultrasonictransducer array; and the short pulse laser generator emits short pulse laser to an area to be punctured, the ultrasonic transducer array receives a reflected photoacoustic signal, and the controllergenerates a slice image. Compared with the prior art, the puncture guide imaging depth is increased, the puncture guide imaging resolution is improved, the puncture needle insertion control accuracy is improved, and the to-be-punctured tissue is not damaged.

The invention discloses a sticking type ultrasonic probe out-of-plane puncture guide frame. The sticking type ultrasonic probe out-of-plane puncture guide frame comprises a double faced adhesive tapefor connecting an ultrasonic probe with a puncture guide frame, a puncture guide frame base plate stuck to the wide edge of the ultrasonic probe, an inverted trapezoidal vertical base plate in the center of the guide frame base plate, and a semi-arc columnar needle groove part connected to the side edge of the vertical base plate. The sticking type ultrasonic probe out-of-plane puncture guide frame can be matched with most existing ultrasonic probes for vascular puncture, the production and sales cost is reduced, and besides, the mismatching probability of clinicians during application is reduced.

A construction method for a bottomless formwork of a concrete protecting wall of a slide-resistant pile includes following steps: firstly, welding and bundling reinforcing steel bars on the lower side of the poured protecting wall; secondly, erecting the formwork and reserving a feeding opening at the upper end of the formwork; thirdly, using river sand to fill and level up the bottom of a poured shipping space to replace a bottom formwork of the poured shipping space; and fourthly, pouring. Rapid construction of the bottomless formwork of the slide-resistant pile can be realized. The clean river sand is used to replace a wood formwork or a combined steel formwork to be used as the bottom formwork of the protecting wall, input of the formworks is reduced, construction efficiency of the protecting wall is increased, exposed time of an excavated surface of a pore wall is shortened, and the protecting wall is poured fast. A rapid pore-forming target can be realized, and the river sand can be recycled and is economical and practical.

The invention discloses an amniocentesis positioning device used for the obstetrics and gynecology department. The positioning device comprises a positioning device body and first fixing blocks, the two first fixing blocks are fixedly connected to the front face of the positioning device body, the opposite faces of the two first fixing blocks are fixedly connected with the two ends of a sliding rod respectively, the surface of the sliding rod is sleeved with a sliding bush, the front face of the sliding bush is movably connected with the back face of a needle tube through a pin shaft, and a positioning needle is arranged on the lower surface of the needle tube. A first hook and loop fastener, a second hook and loop fastener, fixing bands, sponge cushions, sliding blocks, sliding grooves, bearings, the needle tube, the positioning needle, waist-protecting cushions, telescopic rods, springs, connecting plates, clamping rods, clamping grooves, positioning bands, a fixing buckle, the sliding rod and the sliding bush are used in cooperation, the positioning needle can accurately puncture a pregnant women, in this way, the difficulty of puncturing is lowered, the accuracy of puncturing is improved, and the working difficulty of a doctor is lowered.

The invention discloses a rapid water feeding and mixing component of a capsule coffee machine. The rapid water feeding and mixing component comprises a base and an upper cover with end hinged with the base, wherein capsules, which contain coffee powder, are arranged at the top of the base; a first piercing needle and a second piercing needle, which can penetrate into the capsules in a process that the upper cover rotates relative to the base, are arranged at the bottom of the upper cover; a third piercing needle, which is arranged below the capsules, is arranged in the base; a pressing block, which can push and press the capsules downwards so that the third piercing needle penetrates into the capsules in the process that the upper cover rotates relative to the base, is arranged at the bottom of the upper cover; the third piercing needle comprises a water outlet pipe and water outlet holes; and electromagnetic valves / an electromagnetic valve are / is arranged in an water inlet pipe and / or the water outlet pipe. According to the rapid water feeding and mixing component provided by the invention, the pressing block, when the first piercing needle and the second piercing needle are driven to penetrate into the capsules, can press the capsules downwards, so that the third piercing needle can penetrate into the capsules from bottom to top, and the coffee powder, which is uniformly mixed with hot water, in the capsules can flow out through the third piercing needle.

The invention discloses a movable support rotary hydraulic control loop of a winding machine. The loop comprises a three-position four-way reversing valve, two balance valves and a two-position four-way reversing valve. The three-position four-way reversing valve is respectively connected with inlet ends of a liquid inlet pipeline, a liquid return pipeline, a first balance valve and a second balance valve. The three-position four-way reversing valve is positioned on a Y-shaped middle position machine when being in middle position. A control end of the first balance valve is connected with an inlet end of the second balance valve through a one-way throttling valve; and a control end of the second balance valve is connected with an inlet end of the first balance valve through a one-way throttling valve. The first balance valve and the second balance valve are respectively connected with two cavities of a rotary hydraulic cylinder. The two-position four-way reversing valve is respectively connected with control ends of the liquid inlet pipeline, the liquid return pipeline, the first balance valve and the second balance valve. The loop can prevent the unstable condition of a rotating arm due to the gravity center change in movable support rotation, reduces radial external force suffered by the rotating arm in transverse moving actions, reduces the winding drum perforation difficulty, and prolongs the winding drum life.

The invention discloses a device and a method for guiding and realizing precise puncture based on an infrared binocular camera and a robot mechanical arm holding needle sleeve. Unconscious movement of a human body can cause errors such as angle deviation between a puncture needle and a puncture path and distance deviation between a needle point of the puncture needle and a puncture center, and the puncture process is affected. In order to solve the existing problems, the invention provides a mechanical arm holding needle sleeve device based on the six free arms, the position of a puncture needle sleeve is monitored in real time in combination with an infrared positioning method, an operator can find deviation and adjust the position in time, and after the needle sleeve device is determined, a puncture needle is guided to puncture.

The invention provides a deep sealing type hole sealing device which can solve the technical problem that a traditional hole sealing device is complex in process and cumbersome in operation. The deep sealing type hole sealing device comprises a suction pipe and a grouting pipe, wherein the suction pipe and the grouting pipe are arranged in parallel, two sealed bags are arranged at the two ends of a hole sealing segment of the suction pipe and the grouting pipe respectively, the bag close to a hole opening is a hole opening bag, the bag close to a hole bottom is a hole bottom bag, the bags wrap the suction pipe and the grouting pipe, the tail end of the grouting pipe is sealed and arranged at the bottom of the hole bottom bag, a one-way valve is arranged at the position, in the corresponding bag, of the grouting pipe, and an explosion valve is arranged between the two bags. The deep sealing type hole sealing device further comprises a floral pipe, wherein the floral pipe is provided with a plurality of notches, one end of the floral pipe is fixed to the outer portion of the bottom of the hole bottom bag, a sharp cone is arranged at the other end of the floral pipe, the tail end of the suction pipe stretches out of the bottom of the hole bottom bag to be connected into the notches of the floral pipe, and the end, close to the hole bottom, of the suction pipe is provided with a plurality of holes. According to the deep sealing type hole sealing device, casing installation, hole sealing and drainage are integrated, so that convenience is achieved, and operation procedures are reduced.

The invention provides a trocar puncturing assisting instrument comprising an operating rod. A lower protecting sheet, an upper protecting sheet and a locating device are arranged on the operating rodfrom bottom to top successively; an adjusting device for adjusting the distance between the upper protecting sheet and the lower protecting sheet is arranged; the middle portion of the upper protecting sheet is provided with channels allowing passing of a trocar. The trocar puncturing assisting instrument has the advantages that, after the upper protecting sheet and the lower protecting sheet areplaced between corresponding abdominal wall layers for building of a space of an abdominal wall cut, the upper protecting sheet can be adjusted upward to make the upper protecting sheet be a certaindistance away from the lower protecting sheet, so that a certain operating space is maintained during trocar puncturing; the locating device is used for location outside a human body; the trocar can penetrate from the channel accurately, so that the operation is simple; the lower protecting sheet can protect peritoneum, so that the trocar puncturing difficulty is reduced, the success rate of surgery is increased and surgery time is remarkably reduced. The trocar puncturing assisting instrument belongs to the field of medical instruments.

The present invention relates to a vein puncture device and method. The device includes a controller, a puncture robot arm, and a photoacoustic imaging device connected to a first slide rail. The puncture robot arm and the photoacoustic imaging device are connected to the controller. The photoacoustic imaging device It includes a short-pulse laser generator and an ultrasonic transducer array, the short-pulse laser generator emits short-pulse laser light to the area to be punctured, the ultrasonic transducer array receives reflected photoacoustic signals, and a controller generates slice images. Compared with the prior art, the depth of puncture-guided imaging is improved, the resolution of puncture-guided imaging is improved, the accuracy of puncture needle control is improved, and the punctured tissue is not damaged.

The invention relates to an internal fistula puncture needle combined type-B ultrasonic probe convenient to use, and relates to the technical field of internal fistula puncture, the internal fistula puncture needle combined type-B ultrasonic probe comprises a handheld column and a puncture needle, one end of the handheld column is provided with a first penetrating hole, the puncture needle comprises an indwelling part and a blood sampling part which are connected, the indwelling part is inserted in the first penetrating hole, and the handheld column is hollow and is provided with a probe part. The device has the effects of improving the puncture success rate, reducing the puncture difficulty and facilitating single-hand operation.

The invention discloses a single-pole nano knife treatment unit. Through arranging a single ablation electrode, a plurality of neutral electrodes and a pulse generator, adopting the field energy and using irreversible electroporation, the purpose of tissue ablation is realized, through applying a high-strength external electric field to make a cell membrane be permanently transparent and destroy the steady state in a cell, the ablation time is short without being influenced by blood flow, so that complete cell death can be generated around a blood vessel; since living cells are ablated, cell matrix and cell surrounding structure can be retained, and the structures and functions of great vessels and bile ducts remain complete. According to the single-pole nano knife treatment unit, the single ablation electrode is arranged, so that the puncture difficulty is reduced, the trauma of a patient is also reduced; the plurality of neutral electrodes are used for adjusting electric field distribution, so as to provide a return loop for current; the pulse generator is arranged to apply an electric field intensity which exceeds a threshold value between the ablation electrode and the neutralelectrodes, so that the volume of single ablation can be increased, the ablation frequency is reduced, and the ablation treatment time is further shortened.

The invention provides a traditional Chinese preparation for treating tumor, wherein the medicament s prepared from the following raw materials (by weight ratio), selfheal 35-45g, scrophularia root 1.5-3g, through the conventional drug making processes. The preparation has appreciable curative effects for diseases of parotid gland cancer, encephalophyma and kidney cystis.

The invention relates to a flexible percutaneous renal puncturing support guided by color ultrasound. The flexible percutaneous renal puncturing support has different beneficial effects from previouscolor ultrasound positioning puncturing supports by improving the color ultrasound positioning puncturing support. On the one hand, a puncturing needle sleeve ensures that a puncturing needle is always on a plane displayed by a puncturing probe when the puncturing needle is inserted, targeted renal calices can be accurately punctured in the real-time monitoring state, and the puncturing difficultyof percutaneous renal operations is greatly reduced; on the other hand, the puncturing angle can be flexibly adjusted through a chain puncturing support, the needle-inserting angle is adjusted at will in the plane displayed by the puncturing probe, and the free adjustment of the needle-inserting angle ensures the distance of a kidney tract to be as short as possible, so as to reduce the difficulty of subsequent operations. Percutaneous renal surgery is a difficult operation for urologists in the treatment of urolithiasis, due to worse puncture position, the quality of the whole operation is affected, during the operation, important organs or great vessels can be injured, and serious complications are caused; and according to the flexible percutaneous renal puncturing support, the operation difficulty can be obviously reduced, operation time is shortened, the operation method can be popularized in more hospitals, and benefits between operators and patients are achieved.

The invention discloses a craniocerebral puncture auxiliary device for DSA. The device comprises a head plate, a movable fixator and a puncture auxiliary frame, the head plate used for positioning hematoma in an operation is placed below the head of a patient, and the movable fixator is fixed to a cross section position corresponding to the hematoma through a rotary knob after moving in place along one side of the head plate; the puncture auxiliary frame installed on the movable fixator comprises a first angle adjuster, a second angle adjuster and a guide rail. The first angle adjuster is adjusted to enable the second angle adjuster to be tightly attached to the scalp, then the angle of the guide rail is adjusted according to the intraoperative CT measurement angle, the hematoma center, the first angle adjuster and the tail end of the guide rail are made to be straight, and a drainage tube penetrates into the guide rail for auxiliary puncture. According to the craniocerebral puncture auxiliary device for the DSA, craniocerebral hematoma positioning and puncture auxiliary on the DSA can be completed, positioning can be completed on the DSA, and the hematoma condition can be reviewedin real time in the operation; and the guide rail can guarantee puncture stability and reduce puncture difficulty.

The invention discloses a movable support rotary hydraulic control loop of a winding machine. The loop comprises a three-position four-way reversing valve, two balance valves and a two-position four-way reversing valve. The three-position four-way reversing valve is respectively connected with inlet ends of a liquid inlet pipeline, a liquid return pipeline, a first balance valve and a second balance valve. The three-position four-way reversing valve is positioned on a Y-shaped middle position machine when being in middle position. A control end of the first balance valve is connected with an inlet end of the second balance valve through a one-way throttling valve; and a control end of the second balance valve is connected with an inlet end of the first balance valve through a one-way throttling valve. The first balance valve and the second balance valve are respectively connected with two cavities of a rotary hydraulic cylinder. The two-position four-way reversing valve is respectively connected with control ends of the liquid inlet pipeline, the liquid return pipeline, the first balance valve and the second balance valve. The loop can prevent the unstable condition of a rotating arm due to the gravity center change in movable support rotation, reduces radial external force suffered by the rotating arm in transverse moving actions, reduces the winding drum perforation difficulty, and prolongs the winding drum life.

The invention relates to the technical field of medical devices, and discloses a puncture angle adjustment device and a puncture auxiliary robot. The puncture angle adjustment device includes a base, a screw mechanism and a connecting rod mechanism arranged on the base; the screw mechanism includes a screw and a connecting rod mechanism. The nut is sleeved on the lead screw; the lead screw is rotatably arranged on the base around the axis of the lead screw to drive the nut to move linearly along the axis of the lead screw; the linkage mechanism includes a transmission block, a push rod and a rotary rod , one side of the drive block is connected to the nut, and the other side of the drive block is rotatably connected to one end of the push rod; the other end of the push rod is rotatably connected to the first connection end of the rotary rod, and the second connection end of the rotary rod rotates Connected to the base, the third connecting end of the rotary rod is used for connecting the puncture needle assembly. The puncturing angle adjusting device can realize the continuous adjustment of the puncturing angle by setting a screw mechanism and a link mechanism, and has the advantages of high angle adjustment precision, long service life, compact structure and small volume.

The invention belongs to the technical field of medical supplies, and particularly relates to a multipurpose artery positioning pen for the pediatric department. The multipurpose artery positioning pen comprises a first pen holder, wherein a switch is arranged at one end of the first pen holder; a second pen holder is installed at one end of the first pen holder in a threaded mode; a first pen point is arranged at the other end of the first pen holder; a pen sleeve matched with the first pen point is arranged on the outer surface of the first pen point; an amplitude sensor and a positioning marking head are arranged on the first pen point; an induction bead is arranged in the positioning marking head; scale marks are arranged on the outer surface of the first pen holder; a mercury bead isarranged in the first pen holder; one end of a telescopic rod is fixedly installed on one side of the second pen holder; a round rod is fixedly installed at the other end of the telescopic rod; a fixed tip and a second pen point are installed at the ends, away from the first pen point, of the second pen holder and the round rod in a threaded mode respectively; and the fixed tip is opposite to thesecond pen point and the first pen point in direction. The multipurpose artery positioning pen is simple in structure, convenient to use, accurate in positioning, capable of reducing puncture difficulty, multifunctional and high in creativity.