77 results about "Venous blood sampling" patented technology

The invention discloses a full-automatic venous blood sampling device which comprises a syringe needle positioning mechanism, a blood sampling point identifying and treating mechanism connected to the syringe needle positioning mechanism, and an arm fixing positioning mechanism and a needle replacing mechanism arranged on the syringe needle positioning mechanism. The syringe needle positioning mechanism comprises a lead screw transmission assembly, a ballscrew assembly and a three-degree-of-freedom mechanical arm. The lead screw transmission assembly comprises a fixed support and a stand column connected to the fixed support in a sliding mode. The ballscrew assembly is connected to the stand column and the three-degree-of-freedom mechanical arm, and used for driving the three-degree-of-freedom mechanical arm to move left and right. The three-degree-of-freedom mechanical arm comprises a fixing plate, a second mechanical arm body, a first mechanical arm body and a slide block, wherein the two ends of the first mechanical arm body are rotatably connected with the fixing plate and the second mechanical arm body correspondingly, the slide block is connected to the second mechanical arm body in a sliding mode, and a syringe needle is arranged on the slide block.

The invention discloses a disposable anti-pricking venous blood sampling needle which comprises needle sheath, a venous needle tube, a needle handle, a fine hose, a needle seat, a puncture needle seat, a blood sampling needle tube, a rubber sheath and an anti-pricking sheath. The venous needle tube, the needle handle, the fine hose and the needle seat are sequentially connected via adhesive, the puncture needle seat and the blood sampling needle tube are adhered via adhesive, the needle sheath is sleeved on the needle handle, the puncture needle seat is connected in the needle seat in a screwed manner, and the rubber sheath protects the blood sampling needle tube therein and is sleeved at the other end of the puncture needle seat in a clamped manner. The disposable anti-pricking venous blood sampling needle is characterized in that the anti-pricking sheath is sleeved on the fine hose in a clamped manner and can slide on the fine hose back and forth, two sides of the anti-pricking sheath are folded in a pressed manner and then are fastened, after fastening, the rear of the anti-pricking sheath forms a closed ring, and a tortuous slot is axially formed on the side wall of the front of a fastener. After the needle is withdrawn, only the needle handle is required to be pulled back into the anti-pricking sheath, and the problem that the needle with blood accidentally pricks others to cause infection can be avoided, so that protection to medical staff is strengthened.

The invention discloses a reagent kit for measuring the content of C-reactive protein in whole blood and a measuring method thereof. The reagent kit comprises a reagent 1 and a reagent 2, wherein the reagent 1 comprises a surfactant and a proper amount of buffer solution, and the content of the surfactant is 0.1-3g/L; and the reagent 2 comprises polystyrene latex adsorbed with a C-reactive protein antibody and a proper amount of buffer solution, and the content of the polystyrene latex adsorbed with the C-reactive protein antibody is 0.5-3g/L. The measuring method comprises the following steps of: collecting a whole blood sample of a subject, uniformly mixing the reagent 1 and the whole blood sample, then adding the reagent 2 for uniformly mixing, detecting the absorbance and the scattering light intensity of a reaction system at 625-800nm, and computing the content of the C-reactive protein in the whole blood by contrasting a standard curve. In the reagent kit and the measuring method, the whole blood of the subject can be used as a measured sample, the operation is simple, and results are accurate. The invention relieves the pain of the subjects, particularly for the child and newborn subjects and the subjects with more difficult vein blood collection, such as patients with large-area burns, and the like.

The invention discloses an instant vacuum venous blood-sampling method and special equipment. A closed negative-pressure blood-sampling system is formed by a miniature variable-speed peristaltic pump, a miniature electromagnetic valve, a bidirectional blood-sampling needle, a test tube with a special test tube plug and a closed test tube rack. The instant vacuum venous blood-sampling method comprises the following steps of: inserting the test tube with a plug into the test tube rack and tightly pressing the tube plug; then, puncturing a plug-puncturing needle of the bidirectional blood-sampling needle into the test tube plug, puncturing the other end into vein, starting a peristaltic pump and forming a vacuum environment between the interior of the test tube rack and the test tube; forming a negative pressure in the test tube through an air hole of the test tube plug and pumping blood into the test tube; and adding auxiliary blood-sampling equipment so as to conveniently sample blood. The invention solves various problems existing in a vacuum blood-sampling system, has the advantages of simpleness, convenience, practicability, economy and high efficiency and is suitable for popularization and use in various big hospitals and primary healthcare departments.

The invention provides an automatic arm binding strap control device for venous blood sampling. The automatic arm binding strap control device for venous blood sampling comprises an operating box installed on a movable supporting leg frame. A movable seat for seating a blood sampling operator and a movable seat for seating a person with blood to be sampled are arranged at the rear end and the front end of a box bottom plate of the operating box respectively. The person with blood to be sampled is seated on the corresponding movable seat and places one arm in an elastic binding strap of a tensioning controller from one side of the semicircular box wall of the operating box, wherein the elastic binding strap stretches out from a binding strap slit in the upper side of an operating platform; a computer controller is arranged at the rear end of the operating box and controls a transmission controller to drive the tensioning controller through a data line, and the elastic binding strap where the arm of the person with blood to be sampled is placed is automatically tensioned to a suitable tightness degree, so that venous blood is prevented from flowing back, the vein of the arm of the person with blood to be sampled is exposed, and then blood sampling is completed. The automatic arm binding strap control device has the advantages that the arm binding strap control device with the automatic detection and tightness degree control functions is developed, batched blood sampling is conveniently, rapidly and safely completed, and problems existing in blood sampling are solved.

The invention discloses a multifunctional device for venous blood collection, and belongs to the field of blood drawing devices. The multifunctional device for venous blood collection comprises an armbracket and a blood collection tube bracket, wherein the arm bracket and the blood collection tube bracket are vertically distributed and are detachably connected; the blood collection tube bracket comprises a blood collection tube frame and a base, the blood collection tube frame is transversely and slidably connected to the base, a transmission mechanism used for driving the blood collection tube frame to transversely move on the base and a jacking mechanism used for driving the blood collection tube to vertically move on the blood collection tube frame are arranged on the base, the arm bracket comprises a supporting plate, the supporting plate is connected with a holding air bag, and the holding air bag, the transmission mechanism and the jacking mechanism are connected in sequence; and a tourniquet is further connected to the supporting plate. The multifunctional device can solve the problems that in the existing blood drawing operation process, various tools are dispersed, and the efficiency is affected by the weak mutual connection.

The cell separating and storing method is to take healthy and active cell out of body and to freeze store after separation, activation and proliferation, so as to provide effective, safe and reliable disease preventing and treating material. Specifically, the lymphocyte freezing and storing method includes the steps of: for the donor to apply, to exam the blood of the donor, to collect venous blood, to separate lymphocyte from venous blood via a density centrifuging process, to activate and culture lymphocyte, to collect active lymphocyte, to freeze and store lymphocyte, and to defreeze before use.

The invention belongs to the technical field of machine vision and medical instruments and discloses a venous blood sampling needle inserting point automatic extraction method based on vision. The method comprises the following steps of carrying out whole skeleton extraction on venous bifurcations in a binary image, thereby obtaining an image containing a venous bifurcation center line, further obtaining intersection points of the venous bifurcations, and moreover, recording the coordinates of the intersection points of the venous bifurcations; carrying out partial skeleton extraction on the venous bifurcations in the binary image, thereby obtaining a partially refined image; processing the partially refined image according to the obtained coordinates of the intersection points of the venous bifurcations, carrying out statistics on the number of valid points of each intersection point in a preset length range of the midpoint of the intersection point column by column from the venous proximal part corresponding to the orientation of the intersection point, and further obtaining a length count value corresponding to each intersection point, wherein the interaction point corresponding to the venous bifurcation with the maximum length count value is the venous blood sampling needle inserting point. According to the method, the needle inserting point is extracted automatically and the precision and efficiency are improved.

The invention relates to the technical field of medical apparatuses and instruments, in particular to a quantified blood sampling system. The system comprises a vein blood sampling needle, a negativepressure blood sampling pipe and a quantified blood sampling regulating device. The quantified blood sampling regulating device comprises a shell, an installing groove for vertical installation of a negative pressure blood sampling pipe is formed in the side wall of the shell, a cavity is formed inside the shell, an electromagnet is fixedly arranged at the bottom of the cavity, a permanent magnetis arranged above the electromagnet, an elastic piece is arranged between the permanent magnet and the top of the cavity, a sliding groove is formed in the side wall of the installing groove, the sliding groove is communicated with the cavity, a liquid level detecting assembly for detecting the liquid level of the negative pressure blood sampling pipe is in sliding connection with the side wall ofthe installing groove, the liquid level detecting assembly is fixedly connected with the permeant magnet through a connecting piece, the connecting piece is in sliding connection with the sliding groove, a quantified blood sampling controller is arranged on the shell, the quantified blood sampling controller is used for setting a set value of the blood sampling amount, and the position of the liquid level detecting assembly in the sliding groove is controlled through the electromagnet. Accurate quantified blood sampling can be achieved.

The invention relates to a dripping-proof backflow-blood-observable venous blood taking needle, which can improve the accuracy of blood taking amount, prevent dripping after blood taking, conveniently observe backflow blood and effectively prevent cross contamination caused by blood dripping, and ensure accurate blood taking amount. The blood taking needle consists of far-end component and a near-end component which are fixedly connected, wherein the far-end component comprises a far-end needle seat with a far-end needle seat cavity and a far-end needle tube fixed on the far-end needle seat, and the upper end of the far-end needle tube is communicated with the far-end needle seat cavity; the near-end component comprises a near-end needle seat with a near-end needle seat cavity and a near-end needle tube fixed on the near-end needle seat; a wet-closing member is arranged between the far-end needle seat cavity and the near-end needle seat cavity and separate the far-end needle seat cavity from the near-end needle seat cavity, and the lower end of the near-end needle tube passes through the wet-closing member and extends into the far-end needle seat cavity; and the far-end needle seat and the near-end needle seat are made of transparent or semitransparent material.

The invention provides a method for detecting a ToRCH10 item antibody based on filter paper dried blood spots. The method includes the following steps that blood slices with the diameter of 2-4 mm are obtained from the filter paper sheet dried blood spots; the blood slices are re-dissolved with sample diluent, and re-dissolved samples are prepared; the re-dissolved samples are measured through a streaming fluorescence radiation method. According to the method for detecting the ToRCH10 item antibody based on the filter paper dried blood spots, an IgG antibody or an IgM antibody is measured through the combination of a dried whole blood filter paper method and the streaming fluorescence radiation method, the problem that the needed sample size is large in an existing detection method is solved, the needed sample size is reduced, harm to the human body is small, the samples are convenient to save and transport, especially, when objects are newborns, no venous blood sampling is needed, and sampling is more convenient.

An indwelling needle for venous blood collection comprises an indwelling needle. A side wall of an indwelling tube is communicated with an injection portion through a hose; at least one injection port is arranged on the injection portion; sealants are disposed at the rear portion of the indwelling tube; an indwelling sleeve is mounted at the head portion of the indwelling tube; a blood needle passes through the sealants of the rear portion of the indwelling tube and extends out of the indwelling sleeve; the blood needle is communicated with a blood guiding needle. With the indwelling needle for the venous blood collection comprising the specially designed indwelling tube and the blood needle, blood collection operation is realized without affecting liquid injection; with a further optimized indwelling needle provided with a flow limiter, liquid flow is limited, and structure is more compact.

The invention relates to the field of medical instruments, and particularly relates to a disposable anti-needlestick venous blood sampling needle which comprises a blood sampling needle base, a bloodsampling needle tube, a needle sheath, a hose, a hose base and a cork puncture needle, wherein the blood sampling needle tube is mounted on the blood sampling needle base; the needle sheath sleeves the blood sampling needle base; two ends of the hose are respectively connected with the blood sampling needle base and the hose base; the other end of the hose base is connected with the cork punctureneedle; the disposable anti-needlestick venous blood sampling needle further comprises a freely slidable anti-puncture device sleeving the hose and a protection cover connected to the cork puncture needle; the anti-acupuncture device is a hollow tube body; a clamping groove and a track groove are arranged in a tube wall of the anti-needlestick device; and a limiting projection is arranged at a joint of the clamping groove and the track groove. The disposable anti-needlestick venous blood sampling needle provided by the invention can effectively avoid needlestick injuries and eliminate infection of blood-borne diseases, and has advantages of high safety and reliability, simple production process, easy assembly and low production cost.

The invention provides a venous blood sampling hemostatic patch for people with low blood platelets. The venous blood sampling hemostatic patch includes a main body pad; hemostatic cotton is fixedly connected to the bottom of the main body pad; the interior of an air cavity is filled with hemostatic drug powder; an end cap is arranged in a nozzle; a sliding plate is inserted into the main body padand located on the outer side of the nozzle in a sliding mode, a sharp head and a through hole are formed in the sliding plate, a baffle penetrating through the sliding plate is movably inserted intoa right connecting base, a rubber band is arranged at the top of a left connecting base, and bandages are fixedly connected to the sides, opposite to each other, of the two connecting bases. When venous blood sampling hemostasis is carried out on the patient with low blood platelets, the main body pad is placed on a puncture point wound, a pressing pad is pressed, then a handle is hooked and lifted upwards, the sliding plate is pulled by a stretching device to move leftwards, the sharp head punctures the end cap, air pressure in the air cavity blows the hemostatic drug powder outwards, hemostasis is carried out on the wound, the blood coagulation time is shortened, and thus the workload of the patient and medical staff is reduced.

The invention provides a wearable hand part infusion and blood collection simulation demonstration device, including a body, gloves and a liquid device. The body is provided with five layers which arethe bottom layer, the first simulation muscle layer, the simulation vascular layer, the second simulation muscle layer, and the simulation skin layer from bottom to top; the palm areas and the glovesare provided with corresponding first hook and loop fastener straps; and the liquid device is composed of a liquid storage bag, at least one liquid inlet pipeline and a liquid recycle bag, and the liquid inlet pipeline is provided with an adjustment switch. The wearable hand part infusion and blood collection simulation demonstration device has high practicability, can be used to simulate demonstration teaching and training of two skills of intravenous transfusion and venous blood sampling and drawing, and can flexibly change the thickness and route of blood vessels according to needs, by changing thicknesses of cotton cushions, the depth change of the positions of the simulation blood vessels can be realized, the clinical high simulation effect is achieved, and the operational change treating ability and the clinical thinking judgment ability of a learner are better improved.

The invention discloses a full-automatic venous blood sampling machine. The machine comprises a shell body, a moving device and a sterilization assembly are installed in the shell body, and the movingdevice is connected with a blood sampling assembly; a blood sampling assembly conveying window is formed in the side surface of the shell body, a control panel is arranged on the side wall of the shell body, and a contraction tourniquet is arranged on the outer wall of the shell body. The machine effectively solves the problems that according to an existing hospital, the venous blood sampling process is complicated, the professional skill requirement for nurses is high, and the labor intensity of the nurses is high, greatly reduces the risk that a patient feels painful due to puncture errors,can monitor the blood sampling process in real time and is simple and compact in structure, safe, practical and easy to popularize.

The invention relates to a collecting and handling device for a venous blood sampling needle. The device comprises a bottom plate, a mounting rack, a conveying mechanism and a collecting mechanism, wherein the mounting rack is mounted on the bottom plate, and the conveying mechanism is mounted at the lower end of the mounting rack; the collecting mechanism is arranged at the outer side of the conveying mechanism and comprises a rotating motor, a rotating block, a linear guide rail, a collecting branch chain and an assistant branch chain; the conveying mechanism comprises a driving conveying roller, a driven conveying roller, a driving motor, a conveyor belt and a conveying plate; the collecting branch chain comprises a connecting sliding block, a working plate, a cutting blade, a first collecting box and a second collecting box; and the assistant branch chain comprises an assistant motor, an adjusting block, a mounting sliding block, an assistant plate and a connecting frame. The device solves the problems such as that workers are handle each venous blood sampling needle and are easily injured by needle heads during handling and rubber parts are easily mixed with puncturing needleheads in current venous blood sampling needle collecting and handling process.

The invention discloses a method for jugular vein blood collection of a guinea pig. The method comprises the steps of 1) fixing the guinea pig; 2) shaving a blood collection portion; 3) collecting blood at a position of a jugular vein of the guinea pig; 4) after blood collection is finished, stopping bleeding. The blood collection method has the advantages that the operation is simple, the damage is small, blood is not prone to pollution and can be collected repeatedly and the like, and the method has a broad application value.

The invention discloses a mechanism specially used for protecting venous blood collection needles, which comprises a protective cap which is hollow inside and has openings at both ends. A non-return cap is arranged under the protection cap, and the bottom end of the return protection cap is inserted into the non-return cap. The invention is easy to operate, does not change the main structure, does not need to consider complex operation instructions, wrong use, special usage habits and other issues before use; does not change the operating habits after use, this simple design that does not change the operating habits can be completely replaced At present, ordinary venous blood collection needles have wide application; the structure is simple, the added parts are clamped on the blade of the needle handle, and the main structure of the venous blood collection needle does not change, the risk is the lowest, and it is easy to realize safe protection in clinic. The adsorption material at the front end absorbs the remaining blood after the needle is pulled out to achieve complete protection; before use, it does not touch the internal structure of the blood collection needle at all, and does not increase the compatibility and toxicity risks of the device and the blood collection needle.