50 results about "Blood contamination" patented technology

The automatic injection powder mixing syringe includes solvent bottle, solute bottle and syringe cap, as well as solute bottle coating, solvent bottle coating, rotary coating, the first push unit and the second push unit. Rotating the rotary coating can drive the first push unit and the second push unit, so that the needle in the syringe cap massive pierces the rubber plug in the solute bottle and that in the solvent bottle successively and the solvent under the action of the pressure flows to the solute bottle for automatic mixing. The solvent bottle coating is then rotated off, and the solute bottle with the solute bottle coating serves as one syringe. The present invention is disposable to avoid blood contamination.

Some embodiments of the invention provide a needle with a sharp open end and a blunt open end, housed in a barrel with an open anterior end and an open posterior end. The barrel can travel along the hub of the needle, for extending the needle for insertion into a blood vessel, and for retracting the needle into the barrel to avoid injury. The blunt open end can be fluidly connected to the inlet opening of a measurement apparatus, so that the blood can flow directly into the measurement apparatus, eliminating the traditional step of transferring the blood from a syringe to the measurement apparatus. The hollow needle assembly can remain attached to the measurement apparatus because of its small size, and the engagement of an optional safety cap to the open anterior end of the barrel, minimizes the risk of injury and blood contamination. Because a small blood sample is required, a very small needle shaft can be used, minimizing the discomfort experienced by the patient.

The invention provides a dry-type blood plasma unfreezing instrument. The dry-type blood plasma unfreezing instrument comprises a water tank, a heater and a water bag, wherein one end of the water tank is equipped with a metal bench, the other end is equipped with a boss, and the boss is higher than the metal bench; the heater is disposed inside the water tank; and the water bag is equipped with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe communicate with inside of the water tank respectively, and a water pump is disposed on the water inlet pipe. Through application of the dry-type blood plasma unfreezing instrument provided by the invention, blood plasma thawing time can be controlled within 30 minutes as required by blood plasma quality control. In this way, water bath unfreezing can be implemented; blood population is avoided; and operations become more convenient.

The invention relates to a medical instrument suitable for being applied into a blood vessel, in particular to a remaining needle with a unilateral-seam protective sleeve. The remaining needle with the unilateral-seam protective sleeve prevents a needle point from stabbing the blood vessel and prevents blood contamination. The remaining needle with the unilateral-seam protective sleeve comprises the needle tube protective sleeve, a tube guide assembly and a puncturing needle tube assembly. The needle tube protective sleeve is a long hollow shell. One side wall of the needle tube protective sleeve is provided with a sliding seam of a certain length. The front end of the sliding seam is open, and the rear end of the sliding seam is blocked or opened. The seam corresponds to an operation wing and can contain the connection portion between the operation wing and a needle base. The needle tube protective sleeve is inserted into the needle base from the rear end of the remaining needle in a sleeving mode, slides to a clamping and contacting device between the remaining needle and the needle base and is connected with the clamping and contacting device in a clamped and contact mode. The remaining needle with the unilateral-seam protective sleeve has the advantages that after the remaining needle is used for puncture, the needle tube and the needle point can be effectively protected, the situations that a person is accidentally hurt in the subsequent treatment process of the needle tube, and blood contaminates the environment are avoided, the structure of an existing puncturing needle and the puncturing mode are not changed basically, and the remaining needle is high in practicability and convenient to apply and popularize.

The invention provides an electromagnetic drive magnetic suspension nutation heart pump and a use method thereof. The electromagnetic drive magnetic suspension nutation heart pump comprises a pump body and a nutation disc, wherein the pump body is provided with a liquid inlet and a liquid outlet, and the nutation disc is arranged in the pump body. The nutation disc comprises a non-magnetic-conductive inner ring and a magnetic outer ring which are fixedly connected, and hemispherical magnets are arranged on the upper surface and the lower surface of the middle part of the non-magnetic-conductive inner ring. Hemispherical magnetic covers corresponding to the nutation periphery are arranged on the upper surface and the lower surface in the pump body. The hemispherical magnetic covers and the hemispherical magnets have the same magnetism. An electromagnetic drive device for driving the hemispherical magnets to deflect is arranged on the upper part of the pump body. A barrier mechanism is arranged at the position, between the liquid inlet and the liquid outlet, in the pump body. When the electromagnetic drive device drives the hemispherical magnets to deflect, the magnetic outer ring makes line contact with the inner surface of the pump body, and thus in cooperation with the barrier mechanism, and a fluid cavity in the pump body is separated into two zones. The electromagnetic drive magnetic suspension nutation heart pump is simple in structure, free of friction and low in noise and does not need lubrication, and the hemolysis and thrombosis probability and blood contamination caused by a cardiac assistant pump are lowered.

The invention provides a suspension rotor blood pump and a pumping system, and relates to the field of artificial heart. The suspension rotor blood pump comprises a pump shell, a suspension rotor and an internal bracing-type journal; the suspension rotor and the internal bracing-type journal are located inside the pump shell; an inlet is formed in one end of the pump shell, and the internal bracing-type journal is located at the other end of the pump shell; the suspension rotor comprises substrates, blades and permanent magnet rotors; the substrates are arranged outside the internal bracing-type journal in a sleeving mode, and gaps are left, the blades are fixed to the sides, close the inlet, of the substrates, and the permanent magnet rotors are embedded in the substrates; the portion, close to the blades, of the pump shell is further provided with a water pumping chamber which is used for collecting blood and is communicated with the outside; a circle of stators corresponding to the permanent magnet rotors are fixed to the peripheral side of the pump shell. The suspension rotor blood pump is applied to the pumping system. According to the suspension rotor blood pump and the pumping system, the technical problem that blood contamination occurs when an existing blood pump is prone to axial leakage is solved.

A safety syringe is provided with a barrel including a casing tube and a hollow, cylindrical tip; a needle assembly releasably secured to the tip; a pivot assembly releasably secured to the barrel; and a locking cover assembly pivotably secured to the pivot assembly. In inoperative position, the locking cover assembly is distal the needle assembly which is exposed. After dispensing, a pivotal movement of the locking cover assembly toward the needle assembly is configured to cover and lock the needle. This can prevent the needle from accidentally pricking a medical employee to contaminate the medical employee with microorganisms or blood on the needle. Further, this can prevent the safety syringe from being used for a second time. Thus, the safety syringe is ready for disposal.

Systems, devices, compositions, and methods for treating bleeding, for containing blood that has been lost by a subject due to bleeding, and for treating surfaces contaminated with blood or expected to be contaminated with blood are disclosed. The systems, devices, compositions, and methods utilize platelets, platelet-derived materials, or both. The invention includes sprayers, nebulizers, and equivalents, to deliver platelets and / or platelet-derived materials to desired surfaces. Exemplary embodiments include the use of a pressurized sprayer configured to deliver a topical administration of a lyophilized platelet and / or platelet-derived material to a surface.

The present invention provides improved devices for biopsy, aspiration, stem cell acquisition, and methods of using the same. The devices balance aspiration with concurrent infusion to manage changes in pressure at the site of biopsy. The present invention can be adapted for any biopsy, aspiration, or cell harvest procedure, including adipose tissue aspiration and bone marrow aspiration (BMA). In particular, the present invention limits patient pain, prevents blood contamination, and increases cell mobilization, such as improved stem cell yields with intraosseous (10) pharmacological mobilization of stem cells during a BMA procedure, and with improved stem cell yields using pharmacological mobilization of stem cells from fat. The pharmacological mobilization of cells allows the harvest of cells from a biopsy many fold larger than existing methods.

The present invention discloses a blood drawing device for collecting blood samples. The blood drawing device comprises a barrel body, an upper end and a lower end of the barrel body are respectivelyfixedly connected with an upper blocking cap and a lower blocking cap, an upper surface of the upper blocking cap is fixedly connected with a flow distribution block, a flow distribution cavity is formed in the flow distribution block, a blood inlet of the flow distribution cavity is movably connected with a first hose, each blood outlet of the flow distribution cavity is movably connected with athird hose, lower ends of the third hoses penetrate through a side wall of the upper blocking cap, extend into chamber cavities and are fixedly connected with puncture needles, lower ends of the puncture needles movably insert into blood collecting tubes, a plurality of sliding grooves are formed in an inside of the upper blocking cap, and flow stop rods are slidably connected in the sliding grooves. Processes of pulling out a drainage device and replacing the drainage device after blood collection of the blood collecting tubes are eliminated, a risk of frequent contact of an end part of the blood collection device with air is avoided, and the blood drawing device prevents occurrence of blood contamination problems and improves accuracy of blood testing.

A process for cleaning containers (pigs) in which radioactive drugs are shipped to health care providers, after than are returned to a pharmacy and may contain residual radioactive material, blood, microorganisms and other contaminants. Those pigs that are contaminated with radioactive material are removed from the cleaning process until they have decayed to the background radiation level. The upper and lower portions of each blood contaminated pig is disinfected. Each pig is washed at a temperature of at least 180° Fahrenheit for a least one minute to kill bacteria and viruses. The combination of a disinfectant and high washing temperature water provides an optimum level of sterilization.

A kind of disinfectant for blood contaminant can dissolve blood and blood coagulum. The disinfectant is characterized in that it comprises biological oxidants, protease, acidulant, and its various components (as a weight percentage) are: bio-oxidant 1.2 to 2.0; protease 2 to 20; acidulant 5 to 10; the rest is distilled water. The invention can be used to the disinfection of contaminated medical supplies and equipments, it can dissolve blood attached to medical supplies and equipments, including coagulated blood, kill virus mixed in the blood and it is effective, low toxic, low irritation, easy to use, clean and low cost.

The invention relates to a tool special for animal artery blood sampling, and discloses a tool special for sheep artery blood sampling. The tool comprises a liquid relief spearhead, a blood sampling tube and a blood containing container. The liquid relief spearhead is made of polyethylene materials. The head of the liquid relief spearhead is conical, and the included angle formed between the end face of the head and the axis of the liquid relief spearhead is 20-50 degrees, the tail of the liquid relief spearhead is tubular, an ear hook is arranged at the tube wall of the end, away from the head, of the tail, and the ear hook inclines towards the end, away from the head, of the tail; the blood sampling tube is made of polyethylene materials, one end of the blood sampling tube is connected with the tail of the liquid relief spearhead, and the other end of the blood sampling tube is closed by a polyethylene film; a cover is arranged at an opening of the blood containing container, silica gel is arranged in the center of the cover, and the blood containing container is sealed by the cover; the blood containing container can generate negative pressure, the closed end of the blood sampling tube can penetrate through the silica gel, the polyethylene film is broken under the negative pressure, and blood is sampled under the negative pressure. The tool has the advantages that the liquid relief spearhead is fixed firmly and is not likely to be disengaged; in the blood sampling process, the tool is totally closed, so that the probability that blood is polluted is lowered; blood is sampled by adopting negative pressure, and the amount of the sampled blood can be increased by 10-30% compared with conventional blood sampling.

The invention provides a blood pump and a pumping system, which relate to the field of medical appliances. The blood pump comprises a pump head and a pump body, wherein the pump body comprises a pump body shell, a motor and a driving wheel, the motor and the driving wheel are located in the pump body shell, the motor is fixedly connected with the pump body shell, the driving wheel sleeves an output shaft of the motor, and a driving permanent magnet is installed on the driving wheel; the pump head comprises a pump head shell and an impeller; one end of the pump head shell is in sealing connection with the pump body shell so as to form an impeller cavity, an inlet is formed in the other end of the pump head shell, and an outlet is formed in the side wall of the pump head shell; the impeller is installed in the impeller cavity and is close to the driving wheel; and a substrate on one end of the impeller is rotatably connected with the pump head shell, and a driven permanent magnet is fixed to a substrate, of which a blade faces towards the inlet, on the other end of the impeller. The pumping system uses the blood pump. According to the blood pump and the pumping system, the problem of blood contamination caused by direct mechanical driving of an existing blood is solved.

The invention relates to a measurement method of blood flow rate distribution in the limbs. The measurement method of blood flow rate distribution in the limbs comprises the following steps: setting acutting magnetic field perpendicular to a cross section of a human arm; uniformly arranging a plurality of electrodes on periphery of the human arm; and carrying out rate reconstruction according tothe following formula so as to obtain blood flow rate in the arteries and the veins in various areas of the arm. In the formula, Vi denotes blood flow rate, B denotes magnetic induction intensity, r denotes radius of an arm, Ai denotes area, Uj denotes magnitude of electromotive force, and Wij denotes weight value. The measurement method of blood flow rate distribution in the limbs is a non-invasive measurement method which requires no surgical intervention, so that, complications, such as blood contamination and the like, are avoided; moreover, the measurement method is small in error and capable of truly reflecting blockage of the arteries and the veins. In addition, the measurement method can be applied in blood flow rate measurement of different individuals.

The invention discloses an arteriovenous indwelling needle sealing plug comprising a sealing plug body and a cuboidal groove which is arranged inside the sealing plug body; the sealing plug body is a cylinder; the cylinder comprises two opposite circular end surfaces, i.e. a first end surface and a second end surface; the cuboidal groove comprises two opposite side surfaces, i.e. a first side surface and a second side surface; the circle center of the first end surface of the cylinder is arranged on the first side surface of the cuboidal groove; a linear hole slot is also formed between the second end surface and the second side surface; the direction of the opening of the hole slot is along the axial direction of the cylinder, and is communicated with the second end surface and the second side surface; the diameter of the hole slot is 0.1mm to 4mm. Due to the method, the invention provides the arteriovenous indwelling needle sealing plug, so that a catheter seat can be automatically sealed immediately after a needle is pulled out from an indwelling catheter, the problem of blood outflow is solved, not only can the pain of a patient who receives infusion be reduced, but also the phenomena of blood contamination and the like can be prevented, and benefit is brought to the mankind.

The invention relates to a device for preparing injection type autologous i-PRF and a preparation method. The device comprises a centrifugal tube which can be placed in a centrifugal machine for centrifugation and is of a barrel-shaped structure, and a tube opening of the centrifugal tube is in sealed connection with a protective cover capable of allowing an injection needle to penetrate through;an axial opening is formed in the side wall of the centrifugal tube in the axial direction, and a puncturable membrane which is used for sealing the axial opening and can be punctured is connected tothe axial opening in a sealed mode; and a sliding block sliding in the axial opening is further arranged on the side wall of the centrifugal tube in a sliding mode, and a through hole corresponding tothe axial opening is formed in the sliding block. Meanwhile, the invention also discloses the i-PRF prepared by using the device through blood sampling, low-speed centrifugation, extraction and uniform mixing. The device is simple in structure and convenient to operate, the probability of blood pollution is reduced, and the prepared product is in a liquid state with fluidity, is convenient to useand is also beneficial to promoting tissue healing and regeneration.

The invention discloses a umbilical cord blood bag. The blood bag comprises a sampling tube, a blood sampling tube and a bag body for storing umbilical cord blood. The sampling tube and the blood sampling tube are connected with the bag body by a three-way tube. According to the umbilical cord blood bag, the blood sampling and the separation of the samples can be implemented synchronously, and the artificial crossing and confusing are avoided. The umbilical cord blood bag is applicable to the condition that the exterior environment is difficult to control, the blood contamination caused by environmental standard violation and incomplete skin degerming can be reduced, the safety of the clinical sampling and use of blood can be ensured, thus greatly reducing the chance of bacterial pollution.

The invention discloses an integrated closed lumbar puncture pressure measuring and sampling system which comprises a puncture needle and a first drainage tube connected with the puncture needle, the end, opposite to the connecting end of the puncture needle, of the first drainage tube is connected with the inlet end of a four-way valve, the other three ports of the four-way valve are sequentially arranged to be a pressure measuring end used for being connected with a detachable pressure measuring device used for measuring the pressure of cerebrospinal fluid, a sewage discharging end used for discharging the cerebrospinal fluid with blood and a collecting end used for discharging the cerebrospinal fluid which is not polluted by the blood, the sewage discharging end is connected with a first collecting device for collecting and observing cerebrospinal fluid with blood, and the collecting end is connected with a sampling and collecting device for collecting cerebrospinal fluid samples, so that the integrated closed pressure measuring and sampling structure is formed through the puncture needle, the first drainage tube, the four-way valve, the first collecting device and the sampling and collecting device. According to the system, the accuracy of pressure measurement can be effectively improved, and sampling is ensured to improve the credibility and accuracy of a test result.

The invention relates to the technical field of adjuvant chemotherapy, and discloses an adjuvant chemotherapy device for evaluating diversified breast cancers. The adjuvant chemotherapy device for evaluating the diversified breast cancers comprises a bottom plate, a cabinet body, a worktable, a rotating table, a rotating driving mechanism, ten position stabilizing mechanisms, a vacuum adsorption mechanism and ten test tube placement mechanisms, wherein the cabinet body is fixed to the top of the bottom plate; the worktable is fixed to the top of the cabinet body; the rotating table is movablyconnected to the middle part of the top of the worktable; the rotating driving mechanism is arranged on the inner top wall of the cabinet body; and the ten position stabilizing mechanisms are circumferentially and equidistantly fixed to the outer side of the top of the rotating table. According to the adjuvant chemotherapy device for evaluating the diversified breast cancers, a vacuum state is enabled to be formed on the inner part of a sealing cover, a blood sample is prevented from being affected by an external environment, the problem of blood contamination is avoided, the placement and maintenance of the blood sample are facilitated, the accuracy of the detection results of peripheral blood circulation biomarkers is ensured, and meanwhile, the efficiency of blood sample immunostainingis improved.

The invention provides an anti-contamination test tube used in a clinical laboratory. The test tube comprises a tube body. An outer thread is arranged at the end of the tube body. A plurality of projections are arranged inside the tube body. According to the invention, the outer thread is added on the tube body, and can be connected with an inner thread on a catheter cap, such that a problem of blood contamination while drawn blood is being injected into the test tube can be effectively prevented. The test tube has the advantages of simple structure and convenient application. With the test tube, blood can be directly drawn into the tube body, and the working efficiency of laboratory personnel can be improved.

The invention discloses a blood collecting test tube and relates to the field of medical consumables. In order to overcome the problems that a plurality of blood collecting test tubes are used and blood taking needs are inserted and extracted for multiple times to contaminate blood and to affect test results due to multiple blood test items of a patient before surgery, and meanwhile, the workloadof blood collecting medical staff is increased by insertion and extraction for multiple times, the invention provides a blood collecting test tube. The blood collecting test tube comprises an alcoholswab, a test tube main body, rubber plugs, connecting pipes, small test tube plugs and small test tubes, wherein a hollow circular cylinder is arranged at the upper end of the test tube main body anda cylinder is arranged at the lower end; the hollow circular cylinder contains six rubber plugs with equal spacing distances; five closed spaces formed by the six rubber plugs are tightly connected with five small test tubes through the connecting pipes and the small test tube plugs separately; and the small test tubes can be taken down from the corresponding small test tube plugs. The blood collecting test tube can complete the collection of multiple blood samples of the surgical patient at one time on the premise of not changing the blood collecting test tube, reduce the possibility of bloodcontamination caused by changing the blood collecting test tube for multiple times in the blood collecting process, shorten the blood collecting duration of the medical staff and improve the work efficiency.

The invention is applicable to the technical field of medical equipment and provides an uncovering machine. The uncovering machine comprises a blood tube frame, a supporting frame which supports the blood tube frame, a stop block which is mounted on the supporting frame, an uncovering assembly and an abutting push assembly, wherein the uncovering assembly and the abutting push assembly are mountedon the supporting frame. The side of a corresponding blood collection tube on the blood tube frame is pushed in an abutting mode through the stop block, the uncovering assembly can drive the abuttingpush assembly, and when the uncovering assembly moves to the position close to the blood tube frame, the uncovering assembly drives the abutting push assembly and makes the abutting push assembly push the other end of the corresponding blood collection tube in an abutting mode. When the uncovering assembly dismounts a top cover on the corresponding blood collection tube, the two sides of the blood collection tube are blocked by the stop block and the abutting push assembly in an abutting mode correspondingly, so that the blood collection tube is not prone to shaking during uncovering, blood in the blood collection tube does not shake substantially and overflow, and blood contamination can be reduced; and the automatic uncovering operation can be achieved through the uncovering assembly, atraditional complicated operation mode of manual uncovering can be replaced, and thus the uncovering efficiency is improved.

The invention discloses a visual blood collecting needle, comprising a blood collecting steel needle, a transparent steel needle fixing seat and a shell. The blood collecting steel needle comprises ahollow needle tube, two ends of the needle tube are tips, respectively a blood collecting end and a collecting end, and one or two slot-shaped visual openings are arranged along the surface of the steel needle in the long direction. The steel needle fixing seat is an integral structure arranged on the outside of the blood collecting steel needle, and comprises a cannula sleeved on the middle section of the steel needle, wherein the cannula surrounds a sealed cavity on the outside of the blood collecting steel needle; The outer side of the sleeve is a hollow conical protective shell. A manufacture method comprises that follow steps of: injection molding; Making of rubber protective sleeve; Manufacture of steel needle for blood sampling; Assemble. The present invention provides a visual blood collecting needle after assembly and sterilization. By improving the structure of the existing blood sampling needle, not only the chance of blood contamination can be reduced, but also the difficulty of processing can be greatly reduced, and the shortcoming of the prior art processing technology can be overcome.

The invention discloses a filtering device for a blood perfusion apparatus. The filtering device comprises a circular frame (1) and a filter mesh (2). The filtering device is characterized in that the top end of the outer edge of the circular frame (1) is provided with a circular terrace (3). The filtering device is simple in structure and unique in design, the circular terrace at the top end of the outer edge of the circular frame provides better sealing effect so that it is rare that an adsorbent in a perfusion device leaks via a gap between the circular frame and the inner wall of the perfusion device and enters circulating blood, causing blood contamination.

The invention discloses a disinfection device for a blood collection vehicle, which relates to the technical field of medical instruments, and comprises a storage box, a liquid storage box is overlapped on the top of the storage box, and a partition is fixedly connected to the liquid storage box. The partition plate separates the liquid storage tank into a disinfectant solution chamber and a clean water chamber, and the disinfectant solution chamber and the clean water chamber communicate with one end of the liquid outlet pipe 1 and the liquid outlet pipe 2 respectively. The disinfection device for the blood collection vehicle, through the medical staff stepping on the pedal switch 2, the water pump 2 is energized to work, and then the liquid head flows out to wash the hands of the medical staff, so as to avoid residual disinfectant on the hands of the medical staff, so as to ensure the safety of the medical staff. The cleanliness of personnel's hands, when the medical staff no longer steps on the pedal switch 2, the water pump 2 will automatically cut off the power and stop working, and then the clean water will no longer flow out, so as to avoid the contact between the medical staff's hands and other equipment such as faucets, thus ensuring The disinfection effect of the hands of medical staff can avoid blood pollution.

The present invention is proposed to provide one kind of safe injection and hemospasia utensil with simple operation and no blood contamination. The injection and hemospasia utensil includes cylinder, needle assembly fixed to one end of the cylinder, push rod sliding inside the cylinder, connecting part sliding in one end of the cylinder and duct connected to the connecting part. The connecting part includes one connecting seat with the first branch channel penetrating the flow channel axially and extending radially to connect the flow channel; and the duct fixed to the connecting seat is one hollow tube and may be retained inside blood vessel for injecting to and drawing out blood from blood vessel.

The present invention provides improved devices for biopsy, aspiration, stem cell acquisition, and methods of using the same. The devices balance aspiration with concurrent infusion to manage changesin pressure at the site of biopsy. The present invention can be adapted for any biopsy, aspiration, or cell harvest procedure, including adipose tissue aspiration and bone marrow aspiration (BMA). Inparticular, the present invention limits patient pain, prevents blood contamination, and increases cell mobilization, such as improved stem cell yields with intraosseous (10) pharmacological mobilization of stem cells during a BMA procedure, and with improved stem cell yields using pharmacological mobilization of stem cells from fat. The pharmacological mobilization of cells allows the harvest ofcells from a biopsy many fold larger than existing methods.