38 results about "Vein puncture" patented technology

The invention discloses a peripheral vein puncture blood vessel pressure monitoring system for image enhancement examination based on multi-modal fusion, and relates to the technical field of medical image assistion.The peripheral vein puncture blood vessel pressure monitoring system comprises the steps that image data, sensor data and personalized data of a patient are collected; generating an image feature vector, a sensor feature vector and a personalized feature vector based on the preprocessed multi-modal data, carrying out feature interaction on a multi-modal feature line, carrying out representation fusion by combining Transform with contrast learning, and generating a fusion representation vector; the maximum tolerance pressure, the extravasation risk level and the recommended injection flow rate range of the target puncture point under the current injection flow rate are predicted and evaluated in the blood vessel pressure resistance prediction model, injection suggestions and injection alarms of the target puncture point are generated, and injection parameters are automatically adjusted. According to the method, the personalized safety pressure threshold values of patients with different blood vessel conditions are accurately evaluated, and the safety and accuracy of peripheral vein puncture are remarkably improved.

The utility model discloses an arteriovenous puncture outfit manufacturing device which comprises a puncture needle tube feeding mechanism, a catheter feeding mechanism and an assembling mechanism, and the puncture needle tube feeding mechanism and the catheter feeding mechanism respectively drive puncture needle tubes and catheters to move to be close to the assembling mechanism to be positioned. And the assembling mechanism is used for connecting the puncture needle tube with the catheter in a butt joint manner. The needle tubes are sequentially placed in the containing grooves and rotate along with the rotary disc to be close to the assembling mechanism to be positioned, and the guide tubes are sequentially placed on the tube supporting frame and rotate along with the material belt to be close to the assembling mechanism to be positioned, so that the positioning accuracy of the needle tubes and the guide tubes is higher, and the assembling mechanism can be directly connected and assembled conveniently; all procedures are connected more coherently, and the automation degree is higher.

A vein puncture needle is arranged at one end of a needle seat, a bottle inserting end puncture needle is arranged at the other end of the needle seat, a needle tip of the bottle inserting end puncture needle is bent towards the axis direction of the needle tip, a rubber sleeve is sleeved outside the bottle inserting end puncture needle, and a vein puncture needle cap is sleeved outside the vein puncture needle. And an intubation needle cap is sleeved outside the bottle-inserting end puncture needle and the rubber sleeve. The puncture needle has the advantages that the protective rubber sleeve is independently arranged outside the puncture needle at the bottle inserting end, the protective caps are independently arranged outside the vein puncture needle and the puncture needle at the bottle inserting end, the protective caps are used for protecting the sterilized and disinfected double-end needle tube from being polluted, the needle point of the puncture needle at the bottle inserting end is designed to be of an inwards-bent structure, and the puncture needle is convenient to use. In the puncture process of the bottle inserting end, the needle point of the puncture needle at the bottle inserting end can be prevented from penetrating out of the side face of the rubber sleeve to cause blood leakage.

The application discloses a deep vein puncture path generation method and device, the method comprises the following steps: acquiring an ultrasound image of a puncture site; identifying the category of an anatomical target according to the color feature and shape feature of the ultrasound image, and establishing a corresponding feature vector; wherein each feature vector corresponds to an anatomical target; inputting the ultrasound image after the feature vector is established into a preset path model, so that the path model establishes a vein puncture path according to each feature vector, and performs traversal query to output the shortest vein puncture path; wherein the path model establishes a vein puncture path according to each feature vector according to a preset objective function. The technical scheme of the application identifies the anatomical target category in the ultrasound image and outputs the shortest vein puncture path, provides reliable object recognition and path guidance for medical staff, avoids the risk of misjudgment caused by insufficient skills or experience among medical staff, and can improve the accuracy and safety of vein puncture.

The present invention provides an arteriovenous puncture needle, which relates to the technical field of medical devices, and includes a first fixing member, a puncture needle slidably connected to the first fixing member, a scale provided on the puncture needle, a propeller fixedly connected to the puncture needle, a short rod fixedly connected to the propeller, a hose connected to the side of the puncture needle close to the propeller, a second connecting member fixedly connected to the bottom surface of the first fixing member, and the second connecting member rotatably connected to the first connecting member. The present invention fixes the device to the patient's arm through a stabilizing ring, and then by rotating the first fixing member clockwise, the first fixing member drives the second connecting member to rotate clockwise, the first fixing member drives the puncture needle and then drives the propeller clockwise to rotate. When the propeller drives the puncture needle forward, the needle can be inserted at a suitable insertion angle, avoiding the problem of incorrect insertion angle caused by the unstable hands of new medical staff. At the same time, under the limiting effect of the limiting member on the ratchet, the ratchet will not drive the second connecting member to rotate counterclockwise.

The invention discloses a disposable sclerosis injection device special for hemangioma or cyst, and belongs to the technical field of medical instruments. A first connector of the first three-way pipe is connected with an extension pipe of the puncture needle or connected with the puncture needle through a first extension pipe; the first injector is connected with a second connector of the first three-way pipe through a second extension pipe; a first end of the third extension pipe is connected with a third interface of the first three-way pipe; the second end of the third extension tube is connected with the second injector; or, the second end of the third extension tube is connected with the first connector of the second three-way tube, the second connector of the second three-way tube is connected with the third injector, and the third connector of the second three-way tube is connected with the fourth injector. According to the invention, different vein puncture needles are flexibly assembled into the sclerosis injection device special for hemangioma or cyst and suitable for different application scenes, so that cyst suction, radiography and free sclerosing agent injection can be realized.

A blood purification device (1) comprises: a blood purifier (3) capable of purifying blood; a blood circuit (2) including an arterial-side blood circuit (21) which has an arterial-side puncture needle (211) attached on the distal end thereof, and a venous-side blood circuit (22) which has a venous-side puncture needle (221) attached on the distal end thereof; an impedance measurement unit (5) including an oscillator (53) that applies an alternating-current voltage across an arterial-side electrode (51) provided to the arterial-side blood circuit (21) and a venous-side electrode (52) provided to the venous-side blood circuit (22), the impedance measurement unit being capable of measuring frequency characteristics of the impedance between the arterial-side electrode (51) and the venous-side electrode (52); and a puncture determination unit (72) for determining, on the basis of the measured frequency characteristics of the impedance, whether a patient has been punctured normally. The blood purification device also comprises a frequency range determination unit (70) for determining the frequency range of the alternating-current voltage applied by the oscillator (53) in accordance with the liquid in the blood circuit (2).

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

The invention discloses a neonatal umbilical artery and vein puncture catheterization training model which is characterized by comprising a neonatal model and a puncture needle model. A simulated heart is arranged in the thoracic cavity of the newborn model; the aorta and the inferior vena cava are connected with the simulated heart; the puncture needle model is rod-shaped, and a working part is arranged at the front end of the puncture needle model; the periphery of the vein puncture path and the artery puncture path is sleeved with a plurality of sets of electromagnetic coils in the axial direction; each group of electromagnetic coils is provided with an independent main switch, and the main switches of all the electromagnetic coils are arranged along a puncture path one by one, so that the main switch can be triggered when the working part of the puncture needle model passes through one main switch, and the corresponding electromagnetic coil is electrified to generate an acting force in a correct puncture direction on the working part. According to the invention, force sense direction guidance can be provided during puncture practice.

The invention discloses a venipuncture augmented reality navigation system based on near-infrared imaging, and relates to the technical field of medical diagnosis, and the venipuncture augmented reality navigation system comprises the following steps: collecting a light intensity time sequence signal, and collecting a motion signal representing the physical motion of the venipuncture augmented reality navigation system; emitting a light pulse to the target blood vessel region; and performing frequency domain transformation on the light intensity time sequence signal, and completing display in a target blood vessel region through an augmented reality display module. According to the method, the multi-modal quantitative indexes including physiological, physical and spatial dimensions are constructed and visually presented through augmented reality, the objectivity and success rate of venipuncture decision making are remarkably improved, and hardware cost does not need to be increased.

The invention provides a hemostasis device for femoral artery and vein puncture points after infantile congenital heart disease interventional operation, and belongs to the technical field of medical instruments. The hemostasis device for the femoral artery and vein puncture point after the infantile congenital heart disease interventional operation comprises a pair of bandages, the ends, close to each other, of the bandages are jointly provided with a positioning assembly, and the positioning assembly is used for being matched with the bandages to precisely position the hemostasis point; and the compression assembly is arranged in a transparent positioning cover included in the positioning assembly. According to the scheme, the transparent positioning cover is made of the transparent material, so that medical staff can directly observe the real-time condition of a puncture point through the cover body, whether errhysis exists or not can be judged without dismounting the device, and the infection risk is reduced; the cross-shaped positioning lines arranged on the positioning device provide visual reference for puncture point positioning, medical staff can quickly align the cross-shaped intersection point to a puncture hemostasis point, the positioning efficiency and accuracy are greatly improved, and hemostasis failure caused by compression position deviation is avoided.

The invention discloses a navigation system, a storage medium and a method for portal vein and branch vein puncture, and belongs to the technical field of medical instruments. The system comprises a modeling module used for constructing a three-dimensional blood vessel model containing a target belonging branch; the image fusion and navigation display module is used for performing registration fusion on the model and the intraoperative real-time image to generate an augmented reality navigation interface; the surgical instrument tracking and positioning module is used for acquiring and displaying the spatial pose of the instrument in real time; and the intelligent distinguishing module is used for analyzing the physical sensing signal of the instrument and automatically generating a distinguishing signal of entering a blood vessel cavity. The technical problems that an existing navigation system cannot clearly recognize deep branch blood vessels, is not intuitive in guidance and lacks objective successful criteria are solved, accurate, intuitive and intelligent surgical navigation of portal vein specific branches is achieved, and the system is particularly suitable for clinical scenes needing high-quality portal vein blood samples, such as free nucleic acid detection.

The invention relates to the technical field of intravenous injection, in particular to a mechanical arm trolley for hand back vein automatic injection, which comprises a table body, a six-axis robot is arranged on one side of the table body, and the six-axis robot is used for performing vein automatic injection work on the hand back of a patient; a positioning assembly is arranged on the surface of the table body, and the positioning assembly is used for placing and positioning the hand back of a patient; an infusion assembly is placed on the surface of the table body and used for being matched with the six-axis robot to achieve intravenous injection work. A universal six-axis robot is adopted as an execution mechanism, a leading-edge AI automatic needle entry point recognition algorithm and program are introduced in injection point positioning, a common visual camera is matched to collect a hand back image to recognize and determine an optimal needle entry point in real time, and the optimal needle entry point is converted into a pose under a robot coordinate system for autonomous puncture. The problem of medical resource strength shortage is effectively relieved, and the venipuncture success rate and the working efficiency are remarkably improved.

The utility model relates to the technical field of blood taking needles, and discloses a disposable visible return blood collecting needle, which structurally comprises an upper needle seat, a lower needle seat, a butt joint end protective sleeve, a blood taking needle, a butt joint end needle tube and a vein puncture end needle tube. A clamping groove is formed in the middle of a single needle tube of the blood taking needle, the single needle tube is assembled with an upper needle base and a lower needle base to form a visible blood return window, the blood return condition can be observed during collection, the puncture accuracy rate can be conveniently judged, the blood taking needle with the blood return visible through the single needle is achieved, the upper needle base and the lower needle base are assembled with double needle tubes, a certain gap is reserved between the double needle tubes, and the visible blood return window is formed. The blood return condition can be conveniently observed during collection, the puncture accuracy can be conveniently judged, the blood return visible blood taking needle with the two needles is achieved, the single-needle-tube blood taking needle and the double-needle-tube blood taking needle are each of a thin-wall design, the flow of the blood taking needle can be high, and blood taking work can be more conveniently conducted on a patient.

The invention discloses an upper arm precious vein puncture auxiliary device, and relates to the field of medical articles. The upper arm precious vein puncture auxiliary device comprises a bottom plate, an arm pad, a positioning column and an unfolding structure. The bottom plate is provided with a guide structure, the guide structure is arranged in the left-right direction, and the direction perpendicular to the guide structure is the front-back direction. The arm pad and the unfolding structure are both matched with the guide structure and can move along the guide structure to adjust the position; the surface of the arm pad comprises a horizontal surface and an upwarp surface connected with one end, far away from the arm pad, of the horizontal surface; the unfolding structure comprises an unfolding structure frame and two unfolding claws, the two unfolding claws are arranged at intervals in the front-back direction, the unfolding claws are connected with the unfolding structure frame and extend towards the arm pad, and skin pressing pieces are arranged at the ends, close to the arm pad, of the unfolding claws; the height of the unfolding claws is adjustable, and the distance between the skin pressing sheets of the two unfolding claws is adjustable; the positioning column is located beside the arm pad and located between the unfolding structure and the upwarp surface.

The tourniquet comprises an air cushion, a first sleeve belt and a mounting plate, the first sleeve belt is fixedly arranged on the left side of the bottom of the air cushion, the mounting plate is fixedly arranged at the middle end of the top of the air cushion, and an exhaust assembly is arranged on the outer wall of the mounting plate. Through the design of the heating function, hot compress treatment can be conducted on the area of a femoral artery puncture point of the lower limb of a child patient, so that blood circulation of the lower limb of the child patient is promoted, the numbness phenomenon of the lower limb of the child patient is relieved, and therefore the contradiction emotion of the child patient during treatment is relieved in an auxiliary mode through the device. Through the design of a limiting function, the lower limbs of a child patient can be braked, dislocation of the hemostasis device and a puncture point caused by repeated bending of the lower limbs of the child patient is prevented, the hemostasis effect of the device is ensured, and in addition, through the design of a massage function, the blood circulation effect of the lower limbs of the child patient is further improved.

The utility model provides an ultrasound venipuncture and PICC (Peripherally Inserted Central Catheter) catheterization model, which comprises a simulation tissue, a fixing assembly, a blood vessel assembly and extrusion assemblies, the simulation tissue is arranged above the fixing assembly and is fixed through the fixing assembly, the blood vessel assembly and the extrusion assemblies are arranged in the simulation tissue, and the extrusion assemblies are arranged on the two sides of the blood vessel assembly; the blood vessel assembly comprises a simulation blood vessel, a first liquid storage bag, a second liquid storage bag, a first flow speed regulator and a second flow speed regulator, the simulation blood vessel is arranged in the simulation tissue and penetrates through the simulation tissue, the first liquid storage bag is arranged at one end of the simulation blood vessel, the second liquid storage bag is arranged at the other end of the simulation blood vessel, and the first flow speed regulator is arranged at the other end of the simulation blood vessel. And the first flow rate regulator and the second flow rate regulator are arranged on the simulated blood vessel. According to the utility model, human veins are simulated through the blood vessel assembly, blood flow in the veins can be simulated, the blood flow speed can be adjusted, and the extrusion assembly can extrude the simulated blood vessels, so that blood vessels with different thicknesses can be simulated.

The invention relates to the technical field of medical instruments, in particular to a minimally invasive visual umbilical artery and vein puncture navigation system and an operation method. The minimally invasive puncture probe comprises a superfine titanium alloy needle body with the outer diameter of 0.5 mm, the needle body is of a hollow design and can be compatible with a 26G-30G catheter, and a needle tip is integrated with a miniature pressure sensor and used for feeding back the penetration resistance of the blood vessel wall in real time; a medical optical fiber with the diameter of 0.2 mm is embedded in the side wall of the sheathing canal, and the optical fiber is connected with a near-infrared spectrometer, so that the trend and depth of a blood vessel can be displayed in real time, and the positioning error lt can be detected; 0.1 mm; the intelligent fixing device comprises a degradable anchoring clamp with a biological glue coating and a pressure sensing patch, and the pressure sensing patch is used for monitoring the displacement of the catheter and giving an alarm. The puncture probe has the advantages that the puncture probe has the minimum puncture caliber nationwide, the outer diameter of the puncture probe is only 0.5 mm, the puncture probe can be compatible with a 26G-30G catheter, and the puncture probe is a system with the minimum puncture caliber in the field nationwide at present. Compared with the catheter with the minimum of 3.5 F (about 1.17 mm) in the prior art, the risk of vascular injury is remarkably reduced.

The utility model relates to the technical field of medical instruments, in particular to a vein puncture point hemostasis device. The hemostasis patch comprises a fixing patch set and a hemostasis assembly. The fixing paste set comprises a first fixing paste and a second fixing paste which is arranged on the rear side of the first fixing paste and connected through an easy-to-tear line. The hemostasis assembly comprises a positioning sub-assembly and a compression sub-assembly; the positioning sub-assembly comprises a needle handle limiting block embedded in the middle of the first fixing patch and an arc-shaped supporting piece vertically and fixedly arranged behind the needle handle limiting block. The compression sub-assembly comprises a pair of limiting belt rings which are fixedly arranged on the lower surface of the second fixing patch in a bilateral symmetry mode and located on the two sides of the arc-shaped supporting piece, an arc-shaped compression elastic piece movably arranged between the two limiting belt rings in a penetrating mode and a hemostasis piece arranged below the middle of the lower surface of the arc-shaped compression elastic piece in an abutting mode. The device can press a wound in time when a needle is drawn out of a puncture opening, and meanwhile, the problem of subcutaneous extravasated blood caused by displacement between a compression plate and a puncture point due to shaking of the device is avoided as far as possible.

The simulation model comprises a box body, a supporting rod is arranged in the middle of the upper portion of the box body, a movable block is connected to the upper end of the supporting rod in a sleeved mode, one side of the movable block is movably connected with an installation block, one side of the installation block is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the box body. The side, away from the mounting block, of the connecting rod is fixedly connected with the model body, a mounting groove is formed in the side, away from the connecting rod, of the model body, a vein puncture module is fixedly mounted in the mounting groove, a simulation vein tube is arranged in the vein puncture module, and a through hole matched with the simulation vein tube is formed in the model body. The height and the angle of the simulation model can be adjusted according to the condition of a user, the simulation venous tube part is convenient to replace, and the use cost is effectively reduced while the practicability is improved.

The application relates to the technical field of medical devices, and discloses a one-time blood sampling transfer device, which comprises a puncture needle body and a blood sampling test tube, the puncture needle body comprises a venous puncture needle and a connecting hose, a rubber sealing seat and a cover are cooperatively arranged on the top of the blood sampling test tube, the venous puncture needle is fixedly arranged on a needle seat, one end of the needle seat is fixedly connected with one end of the connecting hose, a puncture needle protection cap is sleeved with the end of the needle seat away from the connecting hose, a connecting seat is arranged at the end of the connecting hose away from the venous puncture needle, the connecting seat is arranged between the connecting hose and the blood sampling test tube, a blood transfer seat is arranged between the connecting seat and the blood sampling test tube, and a fixing seat is arranged between the blood sampling test tube and the blood transfer seat. Through the arrangement of the blood transfer seat and the fixing seat, when blood is transferred, the two test tubes can be directly docked through the blood transfer seat and the fixing seat to realize blood transfer, and the situation that blood is wasted due to the fact that blood is left in the connecting hose during blood transfer is avoided.

The invention discloses an ultrasonic vein image recognition blood vessel reconstruction enabling vein puncture device and method, and belongs to the technical field of ultrasonic vein puncture. Comprising a placing base, an ultrasonic vein image recognition device, an angle adjusting device, a front-back adjusting and moving device for moving the angle adjusting device front and back, an up-down moving and adjusting device for moving the front-back adjusting and moving device up and down, and a left-right moving and adjusting device for moving the up-down moving and adjusting device left and right. According to the device, the medical staff can directly carry out puncture operation by combining the astigmatism center mark with the blood vessel depth parameters displayed on the display screen, so that the puncture efficiency is improved, and the medical staff can conveniently and quickly carry out the puncture operation by using the positioning device for accurate positioning puncture and the auxiliary protection positioning equipment for carrying out protection positioning sleeving on the ultrasonic vein image recognition equipment. Depending on subjective experience judgment is not needed, the operation difficulty is effectively reduced, and it is ensured that patients with different body surface conditions can achieve precise puncture.

The invention belongs to the technical field of medical apparatuses and instruments, and particularly relates to a needle inserting auxiliary device suitable for arteriovenous puncture. The acupuncture needle device suitable for arteriovenous puncture comprises a puncture needle, a mounting tube body and a pop-up assembly, the puncture needle comprises a needle body, a sleeve, a fixed needle wing and a connecting tube; the mounting pipe body comprises a containing cylinder, a positioning part and a rear cover body; the pop-up assembly comprises a movable push rod, a limiting sleeve and an elastic limiting piece, and the puncture needle is detachably arranged at the end of the movable push rod. When the puncture needle is used, a medical worker obtains the puncture depth between the puncture needle and the central position of the relative vein or artery according to the color ultrasound conditions of the vein or artery of the puncture part of different patients, and then adjusts the position of the limiting sleeve on the movable push rod, so that the popping distance of the movable push rod can exactly pierce the relative vein or artery; the puncture needle can be quickly and accurately inserted into the relative vein or artery, pain response of a patient can be reduced, and the puncture success rate of medical staff is increased.

The utility model relates to a femoral artery and vein puncture needle which comprises a puncture needle head and a needle cylinder which is located on the rear side of the puncture needle head and communicated with an inner cavity of the puncture needle head, a piston piece is arranged in the needle cylinder, a valve rod extending out of the needle cylinder is fixed on the rear portion of the piston piece, the valve rod and the piston piece are provided with through holes for an external guide wire to penetrate through in a penetrating mode, and the puncture needle head is fixed at the front end of the needle cylinder. The puncture needle can adapt to arteria femoralis or venipuncture, and if arteria puncture is carried out, blood can be guided out of the drainage slim holes through the drainage slim holes formed in the tube wall of the end, located in the needle cylinder, of the puncture needle head. The situation that a guide wire is difficult to place due to the fact that the opening pressure of the end, located in the needle cylinder, of the needle head is too large is avoided, and if venipuncture is conducted, the piston piece in the needle cylinder can be used for suction and verifying whether puncture succeeds or not.

The utility model discloses a scalp venipuncture training device which comprises a fixing base and a head model, an adjusting mechanism used for adjusting the body position of the head model is arranged on the fixing base, and a shaking mechanism used for simulating struggling of children is arranged between the adjusting mechanism and the head model. A vein pipe network for simulating veins of children is embedded in the surface of the head model, red liquid with certain pressure is arranged in an inner cavity of the vein pipe network, and the head model is detachably sleeved with a scalp layer; according to the scheme, the adjustment of vertical, horizontal, pitching, inclined and other body positions of the head model can be realized through the adjusting mechanism, so that the body positions of the head of a child when different positions of the scalp are punctured can be simulated more truly; according to the scheme, the shaking mechanism can drive the head model to deflect and shake, so that the struggling response of the head of a child can be simulated more truly.

1. The name of the design product: vein instrument. 2. The use of the design product: auxiliary equipment for venipuncture. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model relates to the technical field of medical instruments, in particular to a visible blood return needle which is provided with a vein puncture needle seat and a rubber plug puncture needle seat, a vein puncture needle is arranged on the vein puncture needle seat, a rubber plug puncture needle is arranged on the rubber plug puncture needle seat, and the tail end of the vein puncture needle is of a half-section structure in the axial direction of the tail end of the vein puncture needle. According to the vein puncture needle, the semi-section structure is arranged at the tail end of the vein puncture needle, so that medical staff can clearly observe whether blood flows out of the vein puncture needle or not when puncturing the needle, and can confirm whether the vein puncture needle is accurately punctured or not by observing blood exudation or red marks of the semi-section structure at the tail end even if the medical staff face sick old people with weak blood pressure, and the accuracy and the success rate of puncturing the needle are improved; by arranging the vein puncture needle base, the rubber plug puncture needle base and the transparent observation cavity, a direct flowing path is provided for blood, it is ensured that the blood can normally and smoothly enter the rubber plug puncture needle, and detection result errors caused by blood rotation and breaking are avoided.

The invention relates to the technical field of medical instruments, and discloses a disposable arteriovenous puncture outfit which comprises a hose with one end provided with a puncture needle and further comprises a damping type flow control mechanism. The hollow drainage shell is communicated with the other end of the hose, and the interior of the hollow drainage shell is of a hollow structure; the movable valve plate is placed in the hollow drainage shell and can play a role in one-way flow guiding; the spiral spring is placed in the hollow drainage shell and can play an elastic damping effect on the movable valve plate; and the sealing ring can prevent blood leakage. According to the disposable arteriovenous puncture outfit, when a blood transfusion tube falls off, flowing blood can be blocked in time, so that the blood outflow phenomenon is prevented, in addition, the blood flowing state can be effectively controlled, and the stability and the safety degree of equipment in the puncture drainage process are improved.

This invention discloses a video-guided mouse tail vein puncture device, belonging to the field of injection device technology. The key technical features include: a device and a support plate, detachably connected; a rotating block is installed within the device, sliding along its length to secure mice of different sizes; a fixing block is mounted on the support plate, with an adjustable catheter mounted on it; cameras are fixedly mounted on the two inclined sections of a folded plate fitted onto the catheter; a fixing mechanism for securing the mouse tail is installed within a fixing groove to assist the experimenter in performing mouse tail vein puncture; furthermore, an infrared emitter is ring-shaped mounted on the folded plate. This injection device not only secures the mouse and its tail but also assists the experimenter in quickly and accurately locating the mouse tail vein, reducing the number of punctures and improving experimental efficiency.

The utility model discloses an arteriovenous puncture outfit, and relates to the technical field of arteriovenous puncture. The device comprises a conveying pipe, one end of the conveying pipe is provided with a needle head, the needle head is provided with a needle wing piece, the conveying pipe is movably sleeved with a protective sleeve, the surface of the protective sleeve is symmetrically provided with a guide groove and an expansion groove, one end of the expansion groove is communicated with the guide groove, and the surface of the protective sleeve is symmetrically provided with elastic clamping plates. And the elastic clamping plates are correspondingly arranged at the lower parts of the expansion grooves, so that elastic cavities are formed between the elastic clamping plates and the expansion grooves. The puncture risk caused by misoperation when a needle sleeve is sleeved again is greatly reduced, meanwhile, the possibility of cross infection caused by pathogens carried by the puncture needle is reduced, the problem that the used puncture needle is difficult to store is well solved, other personnel are prevented from being punctured, and the safety of medical personnel and surrounding personnel is comprehensively guaranteed.