32results about How to "Suitable for injection" patented technology

The invention relates to a plunger reciprocating pump which comprises a pump body, a plunger, an inhalation valve bank and an exhaust valve bank. The plunger is glidingly matched in a plunger hole of the pump body, the inhalation valve bank and the exhaust valve bank are arranged in the pump body, and a pump cavity is formed among the plunger, the inhalation valve bank and the exhaust valve bank in the pump body. The plunger reciprocating pump is characterized in that an adjusting plunger component kept on the same central line as the plunger is mounted on the pump body and comprises a sealing packing box, an adjusting plunger, a screw, a spring and an adjusting handle, wherein the sealing packing box is mounted on the pump body and is provided with a hole with a valve seat in the center, a sealing component and a guiding sealing sleeve are mounted in the hole, the outer circumferential wall of the adjusting plunger is mounted in the sealing component and the guiding sealing sleeve, the valve surface of the front end of the adjusting plunger is arranged in the pump cavity and matched with the valve seat in the center of the packing sealing box, and the screw is provided with a lug boss at the front end, a cylinder in the middle and external threads at the tail. The invention has the advantages of great adjusting range, high adjusting accuracy and convenient adjustment and is suitable for adjusting the flow rates of a plurality of drain openings of a multi-cylinder reciprocating pump.

The invention relates to a preparation method of injectable polypeptide hydrogel. The preparation method comprises the steps of: dissolving ion compensation polypeptide in 3-20 mM MX aqueous solution under assistance of ultrasonic vibration, and carrying out self-assembly on the obtained solution to obtain the injectable polypeptide hydrogel, wherein the ion compensation polypeptide chain is composed of alternately arranged hydrophobic and hydrophilic amino acids, the hydrophilic amino acid is in charge periodic complementation arrangement, the hydrophobic amino acid is methionine, in the ion compensation polypeptide aqueous solution, the concentration of the ion compensation polypeptide is 5-30 mg / mL, M is Na or K, and X is Cl, Br or I. The obtained hydrogel has good biocompatibility and degradability, can be changed into fluid under the action of mechanical force, can rapidly restore after mechanical damage, is especially suitable for injection by an injector, and is convenient for use.

The invention relates to a bone cement, and a preparation method and application thereof, belonging to the technical field of biomaterials. The bone cement is prepared from the following components expressed in weight percentage: 50 to 80% of solid phase borate bioglass powder and 20 to 50% of modified liquid phase chitosan sol liquid. Compared with conventional bone cement, the bone cement provided by the invention has the advantages of biodegradability, excellent bone conduction, bone induction, osseointegration performance and ossification performance during degradation and capacity of forming bone tissue at last. The preparation method for the bone cement has the advantages of a simple process, simple equipment, easy operation and low cost; the bone cement is injectable and can realize minimally invasive, even noninvasive, treatment; the method can be used for preparing a bone filler and a carrier material for orthopaedic drugs; and the bone cement is applied in bone formation and regeneration in bone tissue engineering or in treatment of orthopaedic diseases.

The invention provides a high-concentration Nimotuzumab preparation for subcutaneous or intramuscular injection as well as a preparation method and application of the high-concentration Nimotuzumab preparation. The high-concentration Nimotuzumab preparation for subcutaneous or intramuscular injection is prepared from the following components: 15-150mg / mL of Nimotuzumab, 150-20,000IU / mL of hyaluronidase, 10-100mM of buffer agent, 5-200mM of stabilizer and 0.01-0.1% (w / v) nonionic surfactant. In the invention, the Nimotuzumab cooperates with the hyaluronidase, the nonionic surfactant, the bufferagent and the stabilizer to obtain the high-concentration Nimotuzumab preparation, and the obtained Nimotuzumab preparation is suitable for subcutaneous or intramuscular injection when high-concentration Nimotuzumab is contained.

The invention relates to a handheld glue solution injection reinforcing device. The handheld glue solution injection reinforcing device mainly comprises a reinforcing mechanism, a needle cylinder support, a baffle plate, a thread clamping sleeve, a needle cylinder, a needle head, a push rod and a pushing piece, wherein a traditional glass glue gun reinforcing mechanism is used as the reinforcing mechanism, the baffle plate is arranged at the front end of the needle cylinder support, the baffle plate and the needle cylinder support are welded together, a hole is formed in the middle of the thread clamping sleeve, and the thread clamping sleeve and the baffle plate are connected together through a thread; the needle cylinder is positioned in the needle cylinder support, the injection end of the needle cylinder is connected with the needle head, the needle head passes through the hole of the thread clamping sleeve, the push rod is a U-shaped rod, one end of the push rod is inserted the reinforcing mechanism of a glue gun, the other end of the push rod is connected with a piston through the pushing piece, and the section of the push rod is of an oblateness the two sides of which are scabbled; and a wafer with a round groove is used as the pushing piece, the pushing piece and the push rod are fixed through the thread, and a round head at the end part of the piston of the needle cylinder after compacting contacts the bottom of the groove of the pushing piece and is clamped in the groove. According to the handheld glue solution injection reinforcing device provided by the invention, a common medical needle cylinder containing glue solution and the glass glue gun are utilized as a reinforcing structure, the handheld glue solution injection reinforcing device is easily available, beneficial to recovery, energy-saving and environment-friendly.

The invention discloses a cathode injection material, and a manufacturing method and an application thereof. The cathode injection material comprises nano-titanium dioxide and a cesium salt doped mutually. The manufacturing method comprises the following steps of: preparing a nano-titanium dioxide solution and a cesium salt solution respectively; mixing a nano-titanium dioxide solution dispersion system with the cesium salt solution to obtain a mixed solution; and coating the mixed solution onto a conductive substrate in a spinning way, and heating and drying to obtain the cathode injection material. The cathode injection material disclosed by the invention has the advantages of low cost, capability of effectively enhancing the input and the transmission of charges, increase in the LUMO energy level of a cathode when applied to an organic electroluminescent device, matching with the energy level of an organic electroluminescent structure, reduction in a potential barrier between the cathode injection material and the organic electroluminescent structure, more suitability for electron injection, increase in the electron injection efficiency, preferable increase in the light extraction capability of the organic electroluminescent device, high luminance and long service life. The manufacturing method of the cathode injection material has a simple procedure and high production efficiency.