50 results about "Blood contamination" patented technology

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.

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.

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.

The invention provides a safety instrument with functions of blood letting and injection, which relates to an instrument that can avoid blood contamination and can simply and smoothly input or extract media into or out of human body. The safety instrument comprises a syringe, a needle head group fixedly arranged at one end of the syringe, a handspike slipperily arranged in the syringe, an adapter piece slipperily arranged at one end of the syringe, and a conduit connected with the adapter piece. The adapter piece comprises a flow channel perforative along axial direction and an adapter base of a first bypass which extends along the radial direction and is communicated with the flow channel. The conduit is a hollow tube which is fixedly connected with the flow channel end of the adapter base and is placed in blood vessel; the conduit injects blood from the adapter base to the blood vessel or draws blood from the blood vessel to the first bypass.

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 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 method and device for preparing autologous platelet-rich plasma for treating pressure injuries. The preparation method includes: ① whole blood collection; ② adding anticoagulant; ③ one-time centrifugation; ④ two-time centrifugation; ⑤ three-time centrifugation; ⑥ Obtain platelet-rich plasma; the preparation device includes a centrifuge tube, the centrifuge tube includes an outer tube, an inner tube and a sealing cover, the inner wall of the outer tube and the outer wall of the inner tube are closely attached, and the sealing cover is sealed and connected with the upper ends of the outer tube and the inner tube, The bottom of the inner tube is provided with a drain tube, and a simple clip is set on the drain tube. There are multiple suction holes on the side wall of the inner tube, and a side wall seal that can be penetrated by a needle is provided in the suction hole. , the preparation device is simple in structure and easy to operate. During the preparation process of the product, the probability of blood contamination can be greatly reduced. The concentration of platelets in the prepared product is high, the extraction efficiency is high, the preparation cycle is short, and the feasibility Strong, and has clinical application value.

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.