935 results about "Blood sampling" patented technology

The invention provides an abnormal blood sampling inspection data evaluation processing method and system of a blood sampling system. Wherein the diffusion track dynamic state of an anticoagulant-blood contact surface in a blood sampling tube is tracked in real time, dielectric response waveform distortion characteristics on the two sides are synchronously collected through a capacitance sensor array, and diffusion form parameters are generated; curvature sudden change is analyzed to trigger an acoustic fluid device to modulate audio frequency and flow velocity, and a composite disturbance field is formed; performing capacitance axial scanning on the disturbed mixed fluid, extracting phase angle offset and gradient abrupt change point coordinates, and constructing a dielectric anomaly three-dimensional map; matching a standard dielectric model, positioning a coordinate set of a concentration gradient imbalance area and a coordinate set of an eddy current attenuation area, and generating an anticoagulant abnormal index and a mixed defect matrix in combination with phase angle offset difference; and establishing a data anomaly degree evaluation function based on the anomaly index and the defect matrix, dynamically associating a clinical error threshold, and outputting a test evaluation result. According to the invention, anticoagulant diffusion can be monitored in real time, and the mixing quality error can be accurately evaluated.

The invention discloses an adrenal vein blood sampling auxiliary system based on three-dimensional reconstruction. The system comprises an image acquisition module used for acquiring medical image data of an adrenal gland and a surrounding human organ tissue structure; the image preprocessing module carries out preprocessing operation on the acquired image data; the contour recognition module recognizes contours of adrenal gland, blood vessels and peripheral human organ tissue structures from the preprocessed image; the three-dimensional reconstruction module constructs a three-dimensional model of the adrenal vein and the peripheral human organ tissue structure according to the contour information; the model correction module is used for correcting and perfecting the three-dimensional model; the rendering module carries out rendering processing on the corrected three-dimensional model so as to enhance the visualization effect; and the positioning auxiliary module provides positioning auxiliary information for adrenal vein blood sampling operation. The system can effectively cope with the complex condition of a blood vessel loop, improves the three-dimensional reconstruction precision, provides accurate guidance for adrenal vein blood sampling, and assists in clinical decision making.

The invention discloses a precise and portable robot blood sampling instrument, and relates to the technical field of medical equipment, the precise and portable robot blood sampling instrument comprises a box body, a plurality of detection structures, a blood drawing structure and a driving structure, the box body forms a working cavity, each detection structure comprises a mounting seat and a plurality of detection devices, and the detection devices are arranged on the mounting seat. The multiple detection devices are mounted on the mounting base, the blood drawing structure comprises a puncture needle and a mounting part, the mounting part is arranged in the working cavity, the puncture needle is detachably mounted in the mounting part, and the driving structure comprises a manipulator, a plurality of first adjusting assemblies and a second adjusting assembly. The mechanical arm is installed in the working cavity, and the first adjusting assembly and the second adjusting assembly are both arranged at the movable end of the mechanical arm. The position of the detection structure is adjusted through the driving structure to detect the limbs of the patient to determine a proper blood drawing position, and the position of the blood drawing structure is adjusted according to the blood drawing position.

The utility model provides a blood sampling device, which comprises a vacuum blood sampling assembly, a blood sampling assembly and a blood sampling assembly, the vacuum blood sampling assembly comprises a vacuum blood sampling tube and a piston, one end of the vacuum blood sampling tube is provided with a blood sampling opening part, the piston is positioned in the blood sampling opening part, the piston is hermetically connected with the inner wall of the vacuum blood sampling tube, and the piston can move in the vacuum blood sampling tube; the transfer assembly comprises a boosting tube and a driving needle, the driving needle is located in the boosting tube, one end of the driving needle is provided with a needle head, the other end of the driving needle is provided with a connector, the needle head is communicated with the connector, and the needle head can penetrate through the piston and then is communicated with the interior of the vacuum blood collection tube. Due to the fact that the blood collecting device is provided with the vacuum blood collecting assembly and the transferring assembly, after the vacuum blood collecting assembly is used for collecting blood, the blood collected by the vacuum blood collecting assembly can be transferred into other containers through the transferring assembly, a piston in the vacuum blood collecting tube does not need to be opened in the transferring process, blood leakage is avoided, and the blood collecting efficiency is improved. And the risk that blood is polluted is reduced.

The invention discloses a blood sampling heat preservation device for animal epidemic disease detection, which comprises a storage box, a heat preservation cavity is arranged in the storage box, a plurality of groups of heating rods are arranged in the heat preservation cavity, an annular conveying belt is arranged in the heat preservation cavity, a plurality of groups of bottle placing seats which are arrayed at equal intervals are arranged on the annular conveying belt, and the bottle placing seats are rotatably connected with the annular conveying belt; sampling bottles are placed in the multiple sets of bottle placing bases, taking and placing holes matched with the sampling bottles are formed in the upper portion of the heat preservation cavity, and sealing plates hinged to the inner walls of the taking and placing holes are installed in the taking and placing holes. The device has the beneficial effects that a second gear at the power output end of a motor is matched with a first gear to drive a bottle placement seat to rotate so as to drive a sampling bottle to rotate, so that sampled blood in the sampling bottle is fully mixed with an anticoagulant, and meanwhile, the sampling bottle is in a heat preservation environment in a heat preservation cavity in the whole process of rotation; blood in the sampling bottle is prevented from going bad when being cooled to influence a subsequent detection result.

The invention discloses auxiliary blood sampling equipment and an operation method thereof. The auxiliary blood sampling equipment comprises a blood sampling box; the test tube table comprises a test tube rack and a driving part, the test tube rack is provided with at least two mounting positions, and the driving part is connected with the test tube rack and used for driving the test tube rack to move; a labeling unit; the first action unit is arranged in the blood sampling box and comprises a first clamping assembly, a second clamping assembly, a first driving assembly and a second driving assembly, the first clamping assembly is used for clamping a blood sampling test tube, the second clamping assembly is used for clamping a blood sampling needle assembly, the first driving assembly is used for driving the first clamping assembly to move, and the second driving assembly is used for driving the second clamping assembly to move; the second driving assembly is used for driving the second clamping assembly to move; the second action unit comprises a third clamping assembly and a third driving assembly, the third clamping assembly is used for clamping the blood sampling test tube, and the third driving assembly is connected with the third clamping assembly and used for driving the blood sampling test tube to be transferred and shaken; a visual detection unit; and a control unit.

The invention provides a GelMA microneedle patch loaded with chromogenic gold nano bipyramids and a preparation method thereof.The method comprises the steps that citric acid, chloroauric acid and a CTAC solution are mixed, then sodium borohydride is added, and a seed solution is obtained through stirring and standing; mixing chloroauric acid, silver nitrate, hydrochloric acid and CTAB (cetyltrimethyl ammonium bromide), and sequentially adding ascorbic acid and the seed solution to obtain a growth solution; carrying out centrifugation, morphology regulation and chemical etching purification to obtain a chromogenic gold nano bipyramid solution; the preparation method comprises the following steps: reacting gelatin with methacrylic anhydride in PBS, dialyzing and freeze-drying to obtain GelMA; dissolving GelMA in the gold nanoparticle bipyramid solution, and adding a photoinitiator LAP to obtain a mixed precursor solution; and the GelMA microneedle patch loaded with the gold nano bipyramid is prepared through mold casting, centrifugation, ultraviolet light crosslinking and drying demolding. The microneedle extraction and gold nano bipyramid color development integrated scheme is initiated, blood sampling is not needed, the dermis interstitial fluid is extracted in a minimally invasive mode through the microneedle, detection pain and trauma are reduced, the cross infection risk of blood treatment is avoided, and the microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle microneedle

The invention relates to the technical field of medical instruments, in particular to a blood sampling auxiliary device which comprises a base, a pulse pressing sleeve for passing through an arm and performing systolic pulse pressing during blood sampling, blood sampling tubes for storing blood samples, a mounting frame for positioning and placing the blood sampling tubes and a blood sampling needle tube connected with the multiple blood sampling tubes at the same time. The pulse pressing sleeve comprises a fixing ring used for fixing and supporting and an adjusting ring capable of conducting necking adjustment, the adjusting ring is matched with the inner wall of the fixing ring to conduct necking adjustment when moving leftwards in the fixing ring, and the front side and the rear side of the fixing ring are each provided with an adjusting screw rod used for conducting left-right adjustment on the adjusting ring. An adjusting ring is adjusted in the left-right direction by screwing an adjusting screw rod, at the moment, the adjusting ring is matched with the inner side wall of a fixing ring to contract an inner hole, and therefore the pulse pressing sleeve can be adjusted according to the thickness of the arm of a patient, and the requirements for arm tightening during blood sampling of different patients are better met; and therefore, the actual blood sampling use requirements can be better met.

The invention belongs to the field of biological microfluidics, and particularly relates to a detection device for biomarkers in blood. The invention provides a device for detecting biomarkers in blood. The device comprises a blood sampling layer, a detection layer and a micro-fluidic chip layer which are adjacent in sequence. According to the device for detecting the biomarkers in the blood, a blood sampling module, an anticoagulation module, a sample transmission module, a chemical reaction module and a signal detection module are integrated on a miniature wearable platform, and portable, painless, rapid and accurate detection is achieved.

The invention relates to the field of drug concentration detection, in particular to a rapid tacrolimus drug concentration detection device based on a micro-fluidic chip. The detection device comprises a blood sampling area, a separation area, a liquid medicine storage area, a waste liquid storage area and a spectrograph, the separation area is used for separating a tacrolimus medicine in a blood sample solution, and a liquid medicine sample and a waste liquid sample are obtained; the spectrograph is used for collecting liquid medicine spectral data of the liquid medicine sample in the liquid medicine storage area and waste liquid spectral data of the waste liquid sample in the waste liquid storage area, and detecting the concentration of the tacrolimus medicine in the blood sample solution according to the liquid medicine spectral data and the waste liquid spectral data. According to the invention, the accuracy of detecting the concentration of the tacrolimus drug in the blood can be improved.

The utility model discloses a tip blood taking needle capable of automatically collecting a blood sample, and particularly relates to the field of tip blood sampling, the tip blood taking needle comprises a device main body, and the middle part of the surface of one side of the device main body is fixedly connected with a connecting end; the needle body is connected to the middle of the connecting end in an embedded mode, and the needle head is fixedly connected to the other side of the needle body. When the blood sampling device is used, the connecting end of the device body is firmly connected with a needle body to ensure that the blood sampling process is stable, the needle cap protects the needle head and prevents pollution, the connector is connected with a blood sampling tube to facilitate collection of blood samples, the nested threaded shaft facilitates fixation of the blood sampling tube, and the embedded cavity, the piston disc, the elastic rod, the pressing rod and the like form a blood sampling power system. The piston disc can be driven to move through easy operation of the pressing rod, blood sampling is automatically completed, the friction force between the device body and the palm of a user is enhanced through the non-slip mat, the use safety is improved, the whole device is compact in design and easy and convenient to operate, and the blood sampling efficiency and safety are greatly improved.

The invention discloses animal husbandry veterinary quarantine detection equipment, and relates to the technical field of quarantine detection. The animal husbandry veterinary quarantine detection equipment comprises a placing seat, a fixing frame is assembled at the top of the placing seat, a power rod driven by an electric push rod is assembled at the bottom of the fixing frame, and a blood sampling tube body is assembled at the bottom of the power rod. According to the animal husbandry and veterinary quarantine detection equipment, an animal is placed on a placement plate in a placement seat, an electric telescopic rod is started, and a movable rod, an arc-shaped outer plate, an elastic telescopic rod, an arc-shaped inner plate, a hydraulic bin I, a stress rod, a push plate, a spring I, a spring II and a pressing plate are matched, so that when blood sampling operation is not performed yet, only the animal is preliminarily fixed, and the blood sampling operation is performed; when blood sampling operation is carried out, the animal is further fixed, and after the blood sampling operation is completed, the animal is quickly restored to a preliminary fixing state, so that the clamping time is shortened, and the possibility of injury to the animal is reduced.

The utility model discloses a rat thrombus forming device which comprises a blood collecting assembly and a thrombus forming assembly, the blood collecting assembly is used for collecting blood of a rat, and the blood collected by the blood collecting assembly is conveyed to the thrombus forming assembly to prepare thrombus; the blood sampling assembly comprises a bottom plate and a top plate, the top plate is located over the bottom plate, a vertical supporting rod is connected between the center of the bottom plate and the center of the top plate, the top plate can rotate around the supporting rod, a plurality of round holes are formed in the top plate in the annular direction, and blood collecting pipes are vertically placed in the round holes; a liquid outlet is formed in the bottom of the blood collecting pipe, a blood transfer pipe is connected to the liquid outlet, and the head end of the blood transfer pipe extends to the thrombus forming assembly; the thrombus forming assembly comprises a rectangular forming groove, a forming template made of rubber is fixed to the bottom of the forming groove, pits with honeycomb holes are densely distributed in the forming template, the diameter of each pit is 2-3 mm, and the depth of each pit is 2-3 mm.

The invention belongs to the field of medical examination equipment, and provides a medical examination sampling device and a use method.The medical examination sampling device comprises a sampling table, a fixed baffle is fixedly installed on the edge of the upper surface of the sampling table, an operation window is formed in the bottom of one end of the fixed baffle, and a fixed groove is formed in the middle of the top end of the sampling table; the conveying mechanism comprises supporting rollers, the supporting rollers are symmetrically and rotationally installed on the two side edges of the inner wall of the fixing groove, the outer surfaces of the supporting rollers are sleeved with a conveying belt, a stepping motor is installed in the middle of one end of each supporting roller, positioning assemblies are arranged on the outer surface of the conveying belt at certain intervals, and limiting clamping pipes are installed on the portions, in the positioning assemblies, of the outer surface of the conveying belt. By means of the automatic separating and collecting structure (the connecting rotary disc, the fixing clamping sleeve and the collecting box), non-contact recycling of blood sampling parts is achieved, direct contact between medical workers and blood samples and sharp tools is reduced, and occupational exposure risks are remarkably reduced.

The invention discloses an efficient variable-pressure blood sampling device suitable for plateau regions, and relates to the technical field of vein blood sampling, the efficient variable-pressure blood sampling device comprises a base, a test tube supporting mechanism, a blood sampling needle mechanism and a piston column labor-saving drawing mechanism, the right side of the top of the base is provided with a mounting groove, and the test tube supporting mechanism is mounted on the rear side of the top of the base; a negative pressure blood sampling test tube is mounted on the test tube supporting mechanism; one end of the blood taking needle mechanism is inserted into the top of the negative pressure blood taking test tube, the blood taking needle mechanism is connected with the test tube negative pressure enhancing mechanism, and the test tube negative pressure enhancing mechanism is mounted in the mounting groove; and the labor-saving piston plunger drawing mechanism is mounted on the base at the front end of the mounting groove, and is connected with the front end of the test tube negative pressure enhancing mechanism. According to the efficient variable-pressure blood sampling device suitable for the plateau area, the negative pressure in the test tube body can be increased so as to adapt to patients with increased blood viscosity in the plateau area, and the blood sampling efficiency of venous blood can be improved.

The invention discloses a specimen sampling device based on medical detection, and relates to the technical field of blood sampling, the specimen sampling device comprises a vacuum blood collection tube, a blood collection needle and a fixator, the vacuum blood collection tube comprises a bottle tube and a bottle cap, the fixator comprises a positioning frame, a sliding block, a puncture needle, a first spring, a second spring and a buckle, and a mounting groove is formed in the upper end face of the positioning frame; the vacuum blood collection tube is detachably installed in the installation groove, the sliding block is installed in the installation groove and is in elastic sliding connection with the positioning frame through a first spring, the puncture needle is installed in the sliding block and is in elastic sliding connection with the positioning frame through a second spring, and a hose is arranged between the blood collection needle and the puncture needle. The blood sampling device has the advantages of being convenient to operate and capable of automatically mixing the anticoagulant, and the problems that according to existing blood sampling equipment, medical staff need to operate with two hands, the blood sampling part of a patient is fixed with one hand, operation is complex, misoperation is prone to occurring, and the process of manually replacing a blood sampling bottle and shaking and mixing the anticoagulant is long in time consumption and low in efficiency are solved.

The invention discloses a laser Doppler heterodyne noninvasive blood glucose concentration measuring device and method, and belongs to the technical field of medical detection. Comprising a laser generating module which comprises a laser, and a first 1 / 2 wave plate and a polarization splitting prism which are sequentially connected with the laser; and the interference light path module is connected to the two sides of the polarization splitting prism respectively and comprises a first optical fiber coupler connected with the polarization splitting prism, and a second 1 / 2 wave plate and a second optical fiber coupler which are sequentially connected with the other side of the polarization splitting prism. The device has the advantages that noninvasive detection can be achieved, blood sampling wounds are avoided, and the comfort level of a patient is improved; the measurement precision is high, and the blood glucose value can be quickly and accurately obtained by using heterodyne interference and frequency shift technologies.

The utility model relates to the technical field of blood sampling devices, and discloses sampling equipment for blood detection, which comprises an operating table, a moving block is arranged in the operating table, a screw rod is rotatably connected to the bottom of the inner wall of the operating table, and a second bevel gear is fixedly connected to the top of the screw rod. A first bevel gear is rotatably connected to the right side of the operation table, a movable clamping plate is arranged on the upper portion of the operation plate, a spring is fixedly connected to the left side of the movable clamping plate, a pedal is rotatably connected to the interior of the operation table, and a pull rope is fixedly connected to the top of the pedal. By rotating the handle, rotating the first bevel gear, rotating the second bevel gear and the screw rod, and moving the moving block up and down, the device adapts to arms with different heights, and by stepping on the pedal to rotate, pulling the pull rope, moving the moving clamping plate leftwards, compressing the spring, loosening the foot, releasing the spring, moving the moving clamping plate rightwards, and resetting the pedal, the device is suitable for the arms with different heights. The use is convenient.

The invention discloses a detection method, system, equipment and medium for blood sampling tube blood layered recognition, and relates to the technical field of medical image processing and intelligent detection.The detection method comprises the steps that multiple types of layered images are collected, and layered label information is defined in a YOLO format; constructing a target detection model, and extracting image deep and shallow layer information; and calculating a liquid layer boundary and calibrating an angle, identifying the liquid layer boundary and mapping an original drawing to draw a layering line. According to the method, a data input system which is clear in structure and friendly in training is established, the learning efficiency and category discrimination precision of the model for layered targets are improved, high-confidence liquid layer region identification and boundary extraction are realized, the stable identification capability of the model under complex backgrounds and sample differences is improved, and the method is suitable for popularization and application. Structured recognition of liquid layering and image output fusion are achieved, and the practicability and the engineering deployment capacity of the system are improved.

The invention relates to the technical field of blood dialysis, in particular to a real-time blood pressure monitoring method of a blood sampling system. According to the method, suspected blood sampling moments and suspected sampling ends are preliminarily screened out through blood pressure deviation conditions according to different change conditions after blood sampling is carried out at the sampling ends, and the blood sampling probability is obtained by analyzing the blood pressure change conditions of the different sampling ends after the suspected blood sampling moments; analyzing the recovery condition after the blood pressure fluctuates according to the suspected blood sampling time, and obtaining a recovery change reduction index according to the reduction change of the recovery condition under continuous sampling; and in combination with accumulation of recovery change reduction indexes and blood sampling probabilities, monitoring and early warning are carried out through comparison analysis of historical patients. The blood sampling condition at the extracorporeal circulation sampling end is analyzed, the fluctuation recovery time reduction condition is compared, the monitoring abnormity is early warned in time, and it is guaranteed that a patient is monitored safely and reliably.

The utility model discloses a blood sampling fixing device, relates to the technical field of medical instruments, and solves the technical problems that an existing device is inconvenient to use and low in efficiency due to the fact that the existing device is inconvenient to fix patients with different arm thicknesses. The device comprises a shell, linkage extrusion assemblies and an arm supporting plate, the linkage extrusion assemblies and the arm supporting plate are arranged in the shell, the arm supporting plate is connected with the shell in a sliding mode, the linkage extrusion assemblies are connected to the two sides of the arm supporting plate, and each linkage extrusion assembly comprises a second connecting rod. A first connecting rod and a third connecting rod are hinged to the two ends of the second connecting rod correspondingly, the first connecting rod is hinged to the arm supporting plate, a pressing plate is arranged at the end of the third connecting rod, a rotating limiting piece is rotationally arranged on the first connecting rod and rotationally connected with the inner side wall of the shell, and the arm supporting plate is stressed to downwards press the first connecting rod, so that the second connecting rod is lifted; the arm fixing device has the advantages of being high in fixing efficiency, wide in application range and the like.

Pen-type lancing device of the re-usable type wherein a lancet body having a needle / tip is inserted; standard spring type actuator (urging member); skin touching forward face having a textured surface for pain relieve; sleeve having internal stop(s) so that the lancet does not overshoot. Also a pen-type lancing device of the re-usable type wherein a lancet body having a needle / tip is inserted; elastomer type urging member for driving the lancet; triggering means (denoted “actuating means”). Further a pen-type lancing device of the reusable type wherein a lancet body having a needle / tip is inserted; standard spring type actuator (urging member) for driving the lancet; alignment splines and cooperating alignment portion(s) for guiding the lancet movement. Even further a method of assembling a blood sampling device in which it does not matter what rotational orientation the components are assembled in.

The arm fixing device comprises a bottom fixing seat and an arm fixing device body, an installation cavity is formed in the bottom fixing seat, a rotating shaft is rotatably installed on the inner wall of the bottom of the installation cavity, and the top end of the rotating shaft rotatably penetrates to the position above the bottom fixing seat. According to the arm fixing device, the arm can be conveniently fixed, and the angle position of the arm fixing device body can be flexibly adjusted according to actual requirements in the fixing process, so that the individual requirements of different patients for the arm angle are better met, the comfort of the patients in the using process is ensured, and the practicability is high. The angle requirement of a doctor during blood sampling can be better met; and after adjustment, through meshing positioning of the positioning clamping teeth and the positioning gear, it can be ensured that the adjusted angle is fixed more firmly, the situation of angle deviation or loosening is not prone to occurring, the use effect and safety are greatly guaranteed, and the adjustable angle adjusting device can better meet various different use requirements.

The invention belongs to the technical field of biological information, and provides an ampulla cancer patient prognosis model based on machine learning and a construction method thereof. According to the method, clinical information of an ampulla cancer patient is obtained through a cancer statistical database, clinical characteristics independently related to survival of the patient are analyzed and positioned through single-factor and multi-factor COX, a prognosis model of the ampulla cancer is established through multiple machine learning algorithms according to the clinical characteristics, and the method can be used for survival prediction of the patient. The method has the advantages of being rapid in prediction, high in accuracy and easy and convenient to use, gene determination does not need to be specially conducted on tissue or blood sampling of the patient, accurate survival rate judgment can be achieved only through clinical information, a clinician can make a personalized treatment scheme of the patient according to the prognosis state, and therefore the survival rate of the patient is increased.

A wrist auxiliary blood sampling device comprises a support which comprises a base, a mounting part and a supporting part, the base is provided with a positioning part used for placing the wrist of a patient, and the mounting part is provided with a laser indicating device used for projecting laser towards the wrist of the patient; the pulsation sensing assembly comprises a pressure sensor, and the pressure sensor is used for being in contact with the wrist of the patient so as to collect arterial pulsation intensity information of different positions of the wrist of the patient; the pulsation sensing assembly is arranged on the base and located on one side of the positioning part, and the pulsation sensing assembly is movably connected with the base; the control module is in electric signal connection with the pressure sensor and the laser indicating device; the control module is used for controlling the laser indicating device to project laser to the strongest arterial pulse point according to arterial pulse intensity information, collected by the pressure sensor, of the wrist of the patient. The auxiliary wrist blood sampling device can ensure the accuracy, reliability and convenience of artery blood sampling and improve the efficiency of artery blood sampling.

The utility model discloses a calf blood collection and infusion fixing device which comprises a base, a fixing device, a fixing device and a fixing device, a pull-out excrement collecting plate is arranged in the base, and an excrement leaking plate is fixed at the top end of the base and located above the excrement collecting plate; the fixing fence is fixed to the top end of the base, the rear side face and the front side face of the fixing fence are provided with an inlet and a cattle head fixing assembly respectively, and vertical supporting rods are fixed to the front ends of the left side and the right side of the fixing fence respectively; one end of each guide transverse rod is fixed to the rod wall of the vertical supporting rod, the other end of each guide transverse rod is arranged in a suspended mode, and each guide transverse rod is provided with a plurality of first bolt holes; and the cow rear baffle is connected to the multiple guide transverse rods in a sleeving mode, and first bolts penetrate through the side walls of the cow rear baffle to be fixedly connected with the corresponding first bolt holes in a screwed mode. According to the device, the calf is fixed and limited in the fixing fence through the calf head fixing assembly and the calf rear baffle, so that the situation that the calf moves randomly to affect orderly blood sampling or infusion work is avoided, and breeding personnel are effectively prevented from being hurt by stress behaviors of the calf.

The invention belongs to the technical field of neonatal blood sampling, and particularly relates to a neonatal disease screening blood sampling auxiliary device which comprises a lifting type baby carriage, a housing and the like. And at least two housings are fixedly connected to the lifting baby carriage. According to the device, air is conveyed into the air bag through the catheter, then the air bag is expanded, the shank position of a newborn is limited, the positions of the circular ring and the air bag are fixed, the problem that the shank of the newborn shakes in the blood sampling process is solved, medical staff can conveniently sample blood, and the blood sampling efficiency is improved. Air is continuously conveyed into the air bag, and then the shank position of the newborn is extruded through the air bag, so that the foot position of the newborn is hyperemia, blood flowing out of the foot position of the newborn is facilitated, and medical staff are assisted in blood sampling; the whole blood sampling process is prevented from being hindered by the catheter.

The invention relates to a clinical index-based biological age evaluation system, a construction method and application, and belongs to the field of biological aging research. Firstly, clinical indexes of a subject are collected, a biological age estimation model is constructed based on the clinical indexes, and the biological aging speed is further calculated. The method can be used for identifying an individual which accelerates senescence or delays senescence, and risk prediction and crowd risk stratification of death and senescence related diseases are realized. According to the method, the nonlinear relationship between clinical indexes and the aging degree is considered, so that the biological age estimated by the method has a better prediction effect on the risk of death and new aging related diseases. The biological age and the biological aging speed are quantified based on the clinical indexes, measurement of the clinical indexes can be completed only through conventional physical examination and one-time blood sampling, the method has the advantages of being low in cost and convenient to use, the biological aging speed can be evaluated in time after physical examination, and health guidance opinions are provided for aging acceleration individuals.

The invention provides a single-prepressing hemostix. The single-prepressing hemostix comprises a sealing cover, a bottom cover, a piston rod, a first spring, a needle seat, an unlocking rod, a microneedle, a second spring, a handle cap and a blood collection tube. When the unlocking rod is pressed down, the needle support can be sequentially extruded out and ejected out to puncture the skin, then the unlocking rod is pressed by a certain distance, the piston rod can be clamped on the buckle on the bottom cover of the blood collector to be extruded out, the piston rod moves upwards under the elastic force of the large spring, and blood enters the blood collection tube under the negative pressure effect; after the microneedle completes puncture, the microneedle is automatically pulled out and taken away by the internal mechanism. A double-spring structure is adopted, the needle head and the negative pressure cavity are limited in the mode that the two pairs of slope buckle devices on the piston rod and the unlocking rod are clamped twice, and therefore it can be guaranteed that a user completes the three steps of needle inserting, blood sampling and resetting at a time, the technical threshold of blood sampling is lowered, labor is saved, and the use convenience of the user is greatly improved.