30 results about "Free blood" patented technology

The invention relates to the technical field of nerve calming granules, and discloses sugar-free blood nourishing and nerve calming granules and a preparation method thereof.The sugar-free blood nourishing and nerve calming granules are composed of hairyvein agrimony, prepared rehmannia roots, vine of multiflower knotweed, yerbadetajo herbs, rehmannia roots, suberect spatholobus stems, cortex albiziae and sugar-free auxiliary materials; comprising microcrystalline cellulose, isomaltitol, mannitol, nano silicon dioxide, Arabic gum, hydroxypropyl methyl cellulose and polyvinylpyrrolidone. By optimizing the proportion and process conditions of the auxiliary materials and the synergistic effect of the medicinal material extract and the auxiliary materials, the humidity of the wet granules is controlled to be 30-35%, the granulation pressure is 3-6 MPa, the drying temperature is 50-55 DEG C, and finally the granules with the particle size of 200-400 microns are prepared. According to the invention, the problems of poor particle formability and insufficient disintegration performance caused by removal of sugar are overcome, rapid disintegration, good formability and stability of sugar-free particles are realized, the solubility and taste of the particles are improved, and the sugar-free granules are suitable for long-term administration by diabetics and sugar-sensitive people.

The invention provides a physiological semantic consistent cuff-free blood pressure model comparative learning pre-training method, and the method comprises the steps: firstly carrying out the unsupervised training of a model through employing a label-free PPG signal, so as to improve the generalization capability of the model; the method comprises the steps that firstly, a PPG signal with a label is adopted for conducting supervised training on a model to train the prediction performance of the model, finally, a small number of PPG signals with the label of a target object are adopted for conducting personalized training on the model to enable the model to have the performance of predicting blood pressure data of the target object, and in the unsupervised training process, the prediction performance of the model is improved. Data enhancement is realized based on blood pressure key physiological knowledge to ensure the quality and practicability of enhanced data, and the diversity of model extraction features is improved through random feature masking and feature resampling. Compared with an existing blood pressure prediction method, the demanded quantity of label data in the training process is reduced, and meanwhile, data enhancement and feature reconstruction are carried out based on the blood pressure key physiological information so as to improve the generalization ability of a blood pressure prediction model.

The utility model discloses an integrated disinfection and storage blood collection bag for repayment-free blood donation. The integrated disinfection and storage blood collection bag comprises a main bag body, an auxiliary bag body, a zipper mechanism and a storage bin. Compared with the prior art, the multifunctional disinfection box has the advantages of being compact in structure, complete in function, capable of integrating disinfection and storage, and convenient to carry and use. Opening and closing of the auxiliary bag body are achieved through the zipper mechanism, and internal articles are convenient to take and use; due to the design of the storage bin, articles such as medical drawsheets can be stored in order, and disorder is avoided; due to the design of the sealing bag, sanitation and safety of medical articles are ensured, and the risk of cross infection is reduced.

The invention discloses a magnetofluid-driven pump-free blood purification system, and belongs to the technical field of medical apparatuses and instruments. The system breaks through a traditional mechanical pump driving mode, magnetic nanoparticles are introduced into blood, the blood is driven to flow by means of magnetic force generated by a gradient magnetic field, and a pump-free blood purification system is constructed. Compared with a traditional blood purification system, the blood purification system has the advantages that damage of high shear force generated by a mechanical pump to blood cells is thoroughly avoided, and the hemolysis risk is effectively eliminated; continuous operation of a mechanical pump is not needed, and energy consumption is remarkably reduced; no mechanical part runs, so that the noise is greatly reduced; meanwhile, huge structures of a mechanical pump and a driving system thereof are eliminated, and miniaturization of equipment is facilitated. The system provides a brand new thought for blood purification treatment, has safety, high efficiency and convenience, is expected to bring a new change to the medical field, and meets the blood purification requirements in different scenes.

The invention discloses a method for evaluating fetal DNA concentration (cffDNA) in free blood of a pregnant female parent through a polymorphic site linkage region block. The method comprises the following steps: acquiring low-depth WGS sequencing data of a sample; obtaining a mapping relation between the point location and the linkage polymorphic relation; and according to the low-depth WGS sequencing data and the mapping relationship between the point locations and the linkage polymorphic relationship, performing concentration calculation by taking a plurality of sites forming the linkage polymorphic relationship as units. Wherein the mapping relation between the point location and the linkage polymorphism can be obtained by processing public genome WGS data, processing public linkage polymorphism region block data or processing a large amount of high-depth WGS measured data. Based on the low-depth WGS data, the cffDNA concentration in the free blood of the pregnant female parent can be directly calculated through the heterozygosity of the linkage SNP region blocks, the method is not affected by the gender of a fetus in NIPT practical application, a father sample and an additional experiment are not needed, the stability is high, the performance is high, and the cost is low.

The present subject matter relates to systems and methods for syringe-free blood return in a dialysis machine blood circuit. A three-way connector can include a first inlet configured to be connected to a patient arterial access line, a second inlet connected to a substitution fluid line, and an outlet connected to a machine arterial line. In this arrangement, the three-way connector is configured to selectively allow a flow of substitution fluid from the substitution line into the machine arterial line and / or into the patient arterial access line without changing the connections of tubing within the circuit.

The invention discloses an IVUS-based guide wire-free blood vessel center line identification and navigation method, and relates to the technical field of blood vessel intervention and image navigation. The method comprises the following steps: arranging an IVUS transducer at the front end of an instrument, and synchronously obtaining an IVUS frame sequence and a probe pose; through cavity wall segmentation, center point extraction and time sequence-space fusion processing, a three-dimensional center line of the main blood vessel is constructed, and a safety envelope is generated; for a branch artery, branch super-selection navigation is realized through candidate sector detection, direction estimation and center line generation and splicing; meanwhile, a mismatch rollback and failure protection mechanism is set, so that navigation safety is ensured; the virtual center line is used for replacing a solid guide wire, the risk that blood vessels are punctured and mistakenly enter a false cavity is reduced, the radiography frequency and radiation exposure are reduced, the operation time is shortened, and the method is suitable for complex intracavity treatment scenes of aorta trunks and branches.

The present invention relates to the technical field of blood collection needles, and specifically to a blood collection needle without a rubber sleeve, comprising a needle holder, the needle holder comprising a sleeve and a needle seat fixed at the front end of the sleeve, the interior of the needle seat being hollow, the interior of the needle seat being a blood section, a limit section and a sliding section from the outside of the sleeve to the inside of the sleeve, the inner diameters of the blood section, the limit section and the sliding section being successively reduced; an injection needle, the injection needle comprising a needle plug and a needle stem fixed at the front end of the needle plug, the needle plug being tightly sleeved at the front end of the needle seat; a puncture assembly, the puncture assembly comprising a needle base and a puncture needle, the needle base being located inside the needle seat, the needle base comprising a sliding portion tightly slidably connected to the sliding section and a limit section adapted to the limit section, the puncture needle being fixed at the rear end of the needle base, and the sliding portion being provided with a blood channel connected to the interior of the puncture needle near the limit section. The blood collection needle does not have the problem of blood leakage when in use, and multiple blood collections can be achieved.

A system for measurement of non-invasive and calibration-free blood pressure (BP) is disclosed. The system comprises a measurement probe (302) which is in contact with a person's skin. The measurement probe (302) comprises a first array of sensors (302-1) and a second array of sensors (302-2). The first array of sensors (302-1) determines a force exerted on skin (304) and the second array of sensors (302-2) determines a compression-decompression characteristics of the arteries through skin. The force exerted on skin and the compression-decompression characteristics of the arteries are used to determine indices indicative of the material properties of the vessel. Based on the indices indicative of the material properties of the vessel, blood pressure and continuous transmural pressure waveform may be determined.

The present invention discloses an ACE inhibitory peptide with DPP-IV inhibitory activity and its application, belonging to the field of active peptide biotechnology; its amino acid sequence is shown in SEQ ID NO.1. The present invention prepares and identifies an ACE inhibitory peptide with DPP-IV inhibitory activity from sea cucumber intestinal egg hydrolysate, which can significantly inhibit the activity of ACE through a competitive inhibition mode, tolerate the gastrointestinal digestive environment, and also has DPP-IV inhibitory activity, and has a mitigating effect on hypertension and type 2 diabetes. It has the characteristics of simple structure, safety, strong activity, etc., can play a role in nutrition and health care, and is expected to provide effective active ingredients for the development of food and side-effect-free blood pressure-lowering, blood sugar-lowering or blood pressure-lowering and blood sugar-lowering efficacy products, etc., and has broad application prospects.

The invention discloses a cuff-free individual blood pressure estimation method based on age grouping fine tuning and two-stage integration. The method comprises the following steps of data collection and preprocessing; pre-training the model; finely adjusting the pre-training model; performing two-stage integrated learning to obtain an individual blood pressure estimation model; and calculating a final blood pressure prediction result based on the model. According to the cuff-free individual blood pressure estimation method based on age grouping fine tuning and two-stage integration, the blood pressure estimation performance of a traditional fine tuning normal form can be improved. The age grouping fine tuning emphasizes the matching age grouping fine tuning model to have better accuracy in cuff-free blood pressure estimation; the two-stage integrated learning unit comprises feature-level integration and result-level integration, the feature-level integration fuses encoder features and regression device weights of a plurality of fine tuning models based on age grouping fine tuning to construct an optimal blood pressure model, and the result-level integration can significantly reduce the uncertainty of selection of a plurality of blood pressure models and significantly improve the final blood pressure estimation precision.

The invention relates to the technical field of spinal tumor excision, in particular to a novel spinal tumor whole block excision method. A novel integral spinal tumor excision method comprises the following steps that S1, a patient is placed in a prone position after being anesthetized, skin and soft tissue structures around a posterior vertebral arch part of a tumor segment are cut open and free according to an operation safety boundary designed before an operation, and pedicle screws are placed in normal vertebral segments above and below a tumor vertebra; s2, cutting part of normal ribs of the tumor vertebral segment on two sides, entering the thoracic cavity through the outside of the pleural cavity, and passively stripping a great vascular structure on the ventral side of the vertebra along the front edge of the vertebral body only at the normal vertebral osteotomy level of the upper end and the lower end of the tumor vertebral by using the finger of a surgeon to enter the front part of the vertebral body, a protection baffle is arranged between the vertebral body and the free blood vessel through the stripping gap, and a fret saw is arranged; and S3, performing En-bloc excision on the tumor vertebrae by using a rotation-rotation technology. Tumor boundaries can be separated, tumors can be removed more thoroughly, and tumor residual recurrence is avoided.

The utility model discloses a blood sampling device for clinical tests, and relates to the technical field of detection articles. The retention needle is fixed at one end of the blood sampling pipeline; the base assembly is detachably fixed on the outer side of the retention needle; the blocking piece is connected to the outer side of the base assembly in a sleeving mode and blocks the base assembly; the test tube bearing piece is detachably fixed on the base assembly; the buckle assembly is detachably fixed on the outer side of the blood sampling pipeline; the blood sampling test tube is inserted into the buckle assembly; according to the utility model, the blood sampling test tube is connected with the blood sampling pipeline through the arrangement of the test tube bearing piece, so that the blood sampling test tube can be used for sampling blood without touching the blood sampling pipeline and the retention needle, needle-free blood sampling can be realized (namely, the needle head of the blood sampling needle does not need to be contacted), the puncture risk is avoided, blood discarding is not needed, and the blood of a patient can be saved.

The utility model belongs to the technical field of blood sampling application, and provides a pressing-free blood sampling application which comprises an adhesive tape and an elastic application plate, the two ends of the application plate are bent upwards to form pressing ends, clamping grooves are formed in the pressing ends, the two clamping grooves are clamped to the two sides of the adhesive tape, a limiting ring is arranged on the bottom face of the application plate, and the pressing-free blood sampling application is arranged on the bottom face of the application plate. And a matched hemostatic cotton paste is arranged in the limiting ring. After vein blood sampling is completed, a blood sampling worker presses a blood sampling point position with the application plate, the hemostatic cotton paste makes contact with the skin blood sampling position at the moment, then the films at the two ends of the pasting belt are torn off, the two ends of the pasting belt have viscosity, and the blood sampling worker slightly pulls the two ends of the pasting belt outwards and downwards to be pasted to the skin. The compression ends at the two ends of the application plate are deformed downwards to a certain degree, so that the application plate can generate continuous pressure downwards, the hemostatic cotton paste is pressed downwards through the application plate, the hemostatic effect is achieved, and no extra hand pressing for hemostasis is needed.

The invention is suitable for the field of medical instruments, and provides a thrombolysis catheter which comprises a conveying pipe, a thrombolysis part, a pushing part and an adjusting part, one end of the pushing part is connected with the near end of the thrombolysis part, the adjusting part is arranged in the conveying pipe in a penetrating mode and used for driving the thrombolysis part to move in the axial direction of the conveying pipe, and the adjusting part is connected with the far end of the thrombolysis part and used for driving the thrombolysis part to move in the axial direction of the conveying pipe. The adjusting part is used for pulling the far end of the thrombolysis part so as to adjust the axial distance between the near end and the far end of the thrombolysis part. When the axial distance between the near end and the far end of the thrombolysis part is changed, the shape of the thrombolysis part is changed, so that the thrombolysis part can be adjusted, the spraying length of the thrombolysis part can also be adjusted, targeted adjustment and targeted medicine spraying can be performed according to the conditions of blood vessels and thrombus, medicine spraying can be more accurate, and the medicine spraying efficiency is improved. The medicine waste can be greatly reduced, the medicine irritation injury to the thrombus-free blood vessel part can be avoided to a great extent, and the probability of bleeding complications increased due to excessive medicine is reduced.

The embodiment of the application provides a kind of key and electronic equipment, belong to electronic technical field, the second shell of key can be pressed and move and rotate, when pressing second shell, elastic deformation piece occurs elastic deformation by second shell.Electronic device can be detected elastic deformation variable, obtain the first pressing force information on second shell, realize the quantitative detection of first pressing force.Using first pressing force information can meet the specific application scenario requirement of electronic device, such as in pressing, the physiological parameter information of pressing part can be detected, the physiological parameter information is the physiological parameter information of pressing part under extrusion force scene, combined with the physiological parameter information and first pressing force information, more accurate biological characteristic information can be obtained, and the accuracy of biological feature detection is improved.No need to additionally increase pressure device, high-precision biological feature detection can be realized, such as high-precision wristband-free blood pressure detection, which is beneficial to the miniaturization and convenience design of electronic device.

The invention discloses a quality control method and system for cuff-free blood pressure monitoring equipment, and relates to the technical field of medical equipment, and the quality control system comprises a multi-dimensional physiological signal database module in which a multi-dimensional crowd physiological signal database is stored; the dynamic signal output module is used for extracting real data samples and synchronously outputting physiological signals and waveforms; the multi-dimensional error analysis module is used for collecting a cuff-free blood pressure monitoring curve output by the detected cuff-free blood pressure monitoring equipment and carrying out function fitting analysis, integral error analysis and point-by-point statistical error analysis; and the quality control qualification judgment module is used for judging whether the quality control of the detected cuff-free blood pressure monitoring equipment is qualified or not in combination with a preset qualification standard. Dynamic changes of multiple physiological signals such as electrocardio and respiration can be simulated, real physiological signals and individual differences are matched, and it is ensured that an analysis result is matched with a change rule of real blood pressure through triple analysis of function fitting analysis, integral error analysis and point-by-point statistical error analysis.

Disclosed herein are resuscitation fluids and compositions comprising NEFA free blood serum albumin and hemoglobulin (cell free or as lysed red blood cells) and methods of treating internal bleeding and hemorrhage.

The utility model discloses a primary screening article box for blood donation without repayment, which belongs to the technical field of medical instruments and comprises a box body, a box cover, a transverse plate, a partition frame, a placing plate, a box body, a handle, a plurality of partition plates, a placing component, two groups of fixing components and a lifting component, the transverse plate is fixedly connected with the box body, and the box body is divided into a first cavity and a second cavity by the transverse plate; the partition frame is fixedly connected with the box body and located in the first cavity, the containing plate is fixedly connected with the partition frame and provided with a plurality of containing holes, the box body penetrates through the box body and located in the second cavity, the partition plates are all fixedly connected with the box body, the box cover is hinged to the box body and located on the upper surface of the box body, and the containing assembly is arranged on the outer side of the box body. And the two fixing assemblies are symmetrically arranged on the two sides of the box body, and through the arrangement, screened objects and consumables can be conveniently classified and stored, so that the use convenience is improved.

The present invention relates to the field of medical device technology, and in particular to a suture-free blood vessel device, a suture-free artificial blood vessel, and a delivery system. The suture-free blood vessel device comprises a hoop and a skirt, one end of the skirt is fixedly mounted on the hoop, and a side edge of the skirt is provided with an incision for cutting the skirt along its axial direction, and a binding wire is provided at the incision for pulling the incision together and tightening it. The beneficial effect of the present invention is as follows: during surgery, a vascular blocking forceps is used to clamp the hoop, and the hoop and the skirt are inserted along the stump of the descending aorta and then sleeved on the outside of the descending aorta. Then, a stent graft is implanted into the inner wall of the descending aorta, and the binding wire is tightened. The stent graft and the skirt clamp the inside and outside of the descending aorta to achieve a suture-free effect, so that the descending aorta, the stent graft, and the artificial blood vessel can be quickly and tightly connected together, thereby greatly shortening the deep hypothermic circulatory arrest time during surgery and reducing surgical complications.

The invention discloses an anaesthesia-free blood sampling integrated deer restraint frame which comprises a bottom plate, supporting legs are fixed to the four corners of the bottom plate respectively, adjusting mechanisms are movably arranged on the two sides of the top of the bottom plate respectively, positioning mechanisms are fixedly arranged on the two sides of the top of the bottom plate respectively, and the adjusting mechanisms can slide in a reciprocating mode to change the distance between the adjusting mechanisms and the positioning mechanisms. According to the device, the distance between the device and the positioning mechanism can be flexibly adjusted through reciprocating sliding of the adjusting mechanism, and the device is adaptive to the body width of deer with different body types; the adjusting frame and the positioning frame can ascend and descend through the second sliding mechanism and can be matched with the angle-adjustable limiting rollers to be attached to the back contours and the body heights of different deer bodies, the limitation that a traditional fixing frame can only achieve foundation fixing is broken through, the multi-scene fixing requirements of antler collection, physical examination, treatment, reproduction assistance and the like can be met, and the practicability is high. And frequent equipment replacement or deer transfer is not needed.

The present subject matter relates to systems and methods for syringe-free blood return in a dialysis machine blood circuit. A three-way connector can include a first inlet configured to be connected to a patient arterial access line, a second inlet connected to a substitution fluid line, and an outlet connected to a machine arterial line. In this arrangement, the three-way connector is configured to selectively allow a flow of substitution fluid from the substitution line into the machine arterial line and / or into the patient arterial access line without changing the connections of tubing within the circuit.

The invention discloses a cuff-free blood pressure estimation method and device based on wearable equipment. The cuff-free blood pressure estimation method comprises the steps that PPG data and ECG data collected by the wearable equipment of a user are obtained; the PPG data and the ECG data are preprocessed; dividing according to a preset window length based on the preprocessed PPG data and the filtered ECG data to obtain a plurality of time slices; performing multi-layer wavelet decomposition on each time slice and performing wavelet statistical feature extraction to obtain statistical features; and combining the statistical features with user sign data to construct feature vectors, and inputting the feature vectors into a lightweight multi-resolution neural network model to output systolic pressure and diastolic pressure data of corresponding time slices, thereby obtaining a continuous blood pressure estimation result of the user. By means of the technical scheme, real-time estimation of systolic pressure and diastolic pressure is achieved under the condition that the end side calculation force is limited.

The invention discloses an esophageal cancer serum detection method which comprises the following steps: 1, sample collection and pretreatment: blood collection requirements: on the day of admission of a patient and on the morning of the day of physical examination of a control group, extracting 5ml of vein blood by using an RNA enzyme-free blood collection tube (such as PAXgeneBloodRNATube) on an empty stomach, and then carrying out blood pretreatment: standing the blood in a kit for 30 minutes, centrifuging the blood at the temperature of 4 DEG C at the speed of 600 * g for 10 minutes, separating serum, and collecting the blood by using a blood collection tube (such as PAXgeneBloodRNATube); the accuracy of the serum detection result of the combination of the miR-134 and the miR-149 is obviously higher than the accuracy of the detection result of AUC (Z = 4.017 and P < 0.001) independently diagnosed by the miR-134 and the accuracy of the detection result of AUC (Z = 4.319 and P < 0.001) independently diagnosed by the miR-149, the expression level of the miR-134 in the serum of an esophageal cancer patient is increased, the expression level of the miR-149 in the serum of the esophageal cancer patient is reduced, and the combined detection of the miR-134 and the miR-149 has a relatively high prediction value on the esophageal cancer. The accuracy of esophageal cancer detection results is greatly improved, and the purpose of early diagnosis and early treatment is achieved.

1. The name of the design product: blood sampling pen without removing cap. 2. The use of the design product: instrument for collecting blood sample. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The invention provides a blood pressure monitoring method and device for a target user, electronic equipment, a medium and a product, and relates to the technical field of blood pressure monitoring. The method comprises the steps that a photoplethysmography signal set of the target user is obtained based on at least two photoplethysmography sensors; the photoplethysmography signal set comprises photoplethysmography signals correspondingly acquired by every two photoplethysmography sensors; determining a waveform feature point set according to each photoplethysmography signal in the photoplethysmography signal set; determining the pulse wave velocity of the target user according to the waveform feature point set; acquiring static physiological parameters of the target user; determining a blood pressure monitoring result of the target user according to the pulse wave speed and the static physiological parameters. According to the technical scheme, the pulse wave speed is determined through the at least two photoplethysmography sensors, the blood pressure monitoring result is determined based on the pulse wave speed and the static physiological parameters, and non-invasive, cuff-free and electrocardiogram-free blood pressure dynamic monitoring is achieved.

The utility model relates to the technical field of blood collection bag transportation, in particular to a temporary transportation tool for a blood collection bag for no-payment blood donation, which comprises a box body, a box cover is arranged at the top of the box body, a refrigeration shell is arranged at the bottom of the box body, and supporting legs are arranged at four corners of the bottom of the refrigeration shell. The bottom of the inner side of the box body is provided with a cold penetration groove hole, the bottom of the inner side of the refrigeration shell is provided with a cooling fan, a semiconductor refrigeration sheet is arranged on the inner side of the refrigeration shell and located above the cooling fan, and the inner side wall of the box body is provided with a temperature sensor. A blood collection bag is independently placed at the position between the two sets of concave clamping plates, then the corresponding two-way air cylinders are started to drive the concave clamping plates to move in the same direction to clamp the blood collection bag, and the blood collection bag can be independently fixed under the cooperation of the auxiliary telescopic rods, so that the stability is improved; and the buffering pads on the two sides can also reduce impact force generated by shaking.

The invention discloses a needleless blood sampling device. According to the needleless blood sampling device, an inner flow tube and a sliding block are arranged in a main body shell, the first end of the inner flow tube penetrates through the first end of the main body shell to be connected with an indwelling needle, and the second end of the inner flow tube is connected with a blood collecting device through the sliding block; the blood state acquisition module is electrically connected with the first end of the control module through the first flexible circuit and the second flexible circuit, and the blood state acquisition module is used for acquiring state information of blood flowing into the internal flow tube in real time and transmitting the state information of the blood to the control module; the second end of the control module is electrically connected with the alarm module through the second flexible circuit and the third flexible circuit, and the control module is used for comparing the state information of the blood with preset blood threshold information and controlling the working state of the alarm module according to a comparison result. The catheter blockage condition of the indwelling needle is judged according to the state information of the blood flowing into the inner flow tube, and different state reminding is carried out according to the catheter blockage condition.

The utility model belongs to the technical field of livestock slaughtering, and particularly relates to a dust-free blood receiving box for sheep slaughtering, which comprises a box body and two slots, the two slots are symmetrically arranged on the box body, and a box cover is inserted between the two slots; the fixing assembly is located in the box body and used for fixing the box cover; the multiple first sliding grooves are formed in the bottom face of the box cover, sliding blocks are slidably connected into the first sliding grooves, and clamping plates are fixedly connected to the bottom faces of the sliding blocks; the driving assembly is located in the box cover and used for driving the multiple sliding blocks to move; the first fixing plate is fixedly connected to the bottom face of the box cover and located among the multiple clamping plates. According to the sheep blood collecting device, the problem that sheep blood is wasted due to the fact that sheep blood is likely to leak in the process that the sheep blood is conveyed after being collected by articles such as basins or barrels is solved, and the problem that the sheep blood is polluted due to the fact that dust in air possibly enters the basins or the barrels in the conveying process is solved.

The heparin cap connector device comprises a heparin cap connector body, an infusion connecting pipe body and an elastic clamping piece, the two ends of the heparin cap connector body are connected with a rotary sleeve cap and a rubber cap respectively, the rotary sleeve cap is movably connected to an indwelling needle connector in a matched and sleeved mode, and the rubber cap is connected with the infusion connecting pipe body. The infusion connecting pipe body is movably inserted into the rubber cap in a matched mode, the elastic clamping piece is fixedly arranged on the heparin cap connector body and located on one side of the rubber cap, and the elastic clamping piece and the infusion connecting pipe body are elastically clamped and fixed in a matched mode. According to the utility model, not only can effective clamping and fixing be carried out and falling during use be avoided, but also the structure is simpler and more practical, and the operation is convenient and rapid.