43results about How to "Meet medical requirements" patented technology

The invention discloses a method for preparing an intravascular stent upon the 3D (three-dimensional) printing technology. The method comprises the following steps: firstly establishing a 3D model of the intravascular stent in a computer; inputting data of the established model into corollary equipment of a 3D printer and setting a printing program; bonding a mixed powder material, consisting of stainless steel powder or nickel-titanium powder and stearic acid powder, with a bonder through 3D printing program control to form an intravascular stent blank; performing degreasing, vacuum sintering and cooling treatment on the blank in sequence to obtain the intravascular stent. According to the preparation method, the personalized model can be designed according to the actual requirement of a patient, and the required intravascular stent blank can be rapidly and accurately prepared; the further prepared intravascular stent has a complete surface and has no defects of deformation or cracking and the like; especially, the prepared intravascular stent has no rejection reaction in 24 days in simulated body fluid, is good in biocompatibility and completely meets the medical requirement; the cost for preparing the intravascular stent by a traditional laser cutting method is greatly reduced.

The invention discloses an anti-adhesion medical composite film which is composed of a first surface layer, a second surface layer and an inner layer, wherein the inner layer is attached onto the first surface layer, and the second surface layer is attached onto the inner layer; the first surface layer and second surface layer respectively comprise the following components in parts by weight: 49-61 parts of low-density polyethylene, 38-51 parts of linear low-density polyethylene, 0.5-0.7 part of parts of and 0.04-0.06 part of lubricant; and the inner layer comprises the following components in parts by weight: 20-70 parts of low-density polyethylene and 30-80 parts of medium/high-density polyethylene. The anti-adhesion medical composite film disclosed by the invention has the advantages of stable friction factor and favorable anti-adhesion property; the medical product produced by the film does not have the adhesion phenomenon after being folded, sterilized by oxirane and the like and unfolded; and the unfolded anti-adhesion medical composite film has good transparency and favorable integral appearance effect.

The invention discloses medical two-component addition-type liquid silicone rubber. The liquid silicone rubber comprises a component A and a component B in a mass ratio of 1: 1, wherein the component A comprises the following raw materials in parts by mass: 50 to 70 parts of vinyl polysiloxane, 3 to 10 parts of a silane coupling agent, 20 to 45 parts of fumed silica and 0.1 to 1 part of a platinum catalyst; the component B comprises the following raw materials in parts by mass: 50 to 70 parts of vinyl polysiloxane, 2 to 5 parts of a silane coupling agent, 20 to 45 parts of fumed silica, 2 to 20 parts of low hydrogen containing polysiloxane, and 0.1 to 0.5 part of an inhibitor. The liquid silicone rubber prepared by the invention has high transparency and high mechanical properties, meets medical requirements of FDA and the like, and further can meet the processing performance and the molding cycle of liquid injection molding silicone rubber.

The invention relates to a method for preparing and purifying an olmesartan intermediate. The preparation method comprises the following steps of: chlorinating 4,5-dimethyl-1,3-dioxa-cyclopentene-2-ketone, distilling under reduced pressure to obtain 4-chloro-4-methyl-5-methylene-1,3-dioxolane-2-ketone, and performing rearrangement reaction to generate the olmesartan intermediate; reducing the temperature to be below 50 DEG C, concentrating until a solvent is removed completely to obtain a crude product; and recrystallizing and purifying the crude product at the temperature of between -20 and 0 DEG C for 1 to 48 hours, wherein a recrystallization solvent may be one or a mixed solvent of more of an alkane solvent and an ether solvent. The preparation method is low in production cost, mild in reaction condition and easy to operate, raw materials are wide in sources, and high-content 4-chloromethyl-5-methyl-1,3-dioxa-cyclopentene-2-ketone can be obtained directly, so the method is particularly suitable for large-scale industrial production.

The invention aims to provide a marrow liquid-injecting gun for rescuing, which is suitable for emergently setting up a transfusion channel in the field conditions including various accidents, such as, earthquake, fire hazard, traffic accident, and the like, as well as the natural disaster environment. The marrow liquid-injecting gun comprises a gun body, a propulsion system and an ejection system, wherein the gun body consists of a propulsion cylinder, a locating sleeve, a trigger and cocking device and a pikestaff; the propulsion system consists of a pull bar, a pull bar handle, a locating card shoot, a limiting card shoot and a propulsion spring; the ejection system consists of an internal pin, an external pin, an injection needle fixed device and a cartridge. In the invention, the materials of the main parts are mainly low carbon alloy steels after undergoing surface treatment. The invention is a medical apparatus universally used by the army and common people, is completely mechanical without any energy source requirement, has safe, convenient and fast use, can be repeatedly used for many times, greatly reduces the use cost of the original medical apparatus and has wide application prospect in clinic.

The invention discloses a composition for treating oral mucositis. The composition is prepared from ropivacaine mesylate and an aluminum hydroxide and magnesium hydroxide suspension in a dose ratio of 0.5-5mg to 1ml. The invention further discloses a method for preparing the composition for treating oral mucositis. The method comprises the following steps: 1, preparing the suspension from hydroxyethyl cellulose, hydroxy propyl cellulose, simethicone, aluminum hydroxide and magnesium hydroxide; 2, adding sorbitol, mannitol and butyl p-hydroxybenzoate to regulate the pH value to obtain the aluminum hydroxide and magnesium hydroxide suspension; and 3, adding ropivacaine mesylate into the aluminum hydroxide and magnesium hydroxide suspension, and uniformly stirring to obtain the suspension for treating oral mucositis. The invention further discloses an application package for the composition for treating oral mucositis. The composition for treating oral mucositis has the advantages of relieving pain and diminishing inflammation, repairing the mucosa ulcer face and the like, and is convenient to use.

The invention discloses a multi-functional mobile infusion support. The multi-functional mobile infusion support comprises a caution light, heatable medicine bottle placers, a control system, an infusion support body, a bottom disk, universal wheels and a rubber sleeve. According to the multi-functional mobile infusion support disclosed by the invention, the heatable medicine bottle placers are arranged, so that during infusion in winter, medicine bottles are clamped in a bottom encloser and a side housing, and the fixation is very convenient; heating pieces adopt PI film constant-temperatureheating pieces, and constant-temperature heating can be performed on infusionbottles, the impact of ice-cold liquid medicines to blood vessels of a patient is reduced, and nerve stimulation to the patient is avoided; the control system is arranged, so that the multi-functional mobile infusion support can be voluntarily operated according to the requirements of the patient, the medical care requirements of the patient are met, and the multifunctionality of the infusion support is improved; and the caution light is arranged, when some patients inconvenient to speak need to replace medicine bottles or have other requirements, the patient can press a recourse switch, then the caution light is lighted, and medical personnel can directly go for inquiry after seeing the lighted caution light, sothat the medical service quality is greatly improved, and enormous convenience can be provided for the patient.

The invention provides a controlled drug-release magnesium or magnesium alloy bionic bone and a preparation method thereof, and belongs to the technical field of biomedical materials. The preparationmethod includes the following steps: performing pulsed laser processing on magnesium or magnesium alloy according to predetermined bone structure parameters so as to obtain porous magnesium or magnesium alloy; successively performing micro-arc oxidation treatment and alkali treatment on the porous magnesium or magnesium alloy so as to obtain modified porous magnesium or magnesium alloy; and soaking the modified porous magnesium or magnesium alloy into a traditional Chinese medicine sustained release solution, and taking the modified porous magnesium or magnesium alloy out to dry so as to obtain the controlled drug-release magnesium or magnesium alloy bionic bone, wherein the traditional Chinese medicine sustained release solution includes naringin, PLGA and a volatile solvent of soluble poly(lactic-co-glycolic acid). The preparation method is simple in technology; the adding of foaming agents or pore forming agents is not needed; and the prepared controlled drug-release magnesium or magnesium alloy bionic bone is excellent in using performance.

The invention discloses an electric resectoscope for gynecologic operation, which comprises an electrical apparatus controller, an electric hand machine assembly and a resectoscope assembly, wherein the resectoscope assembly comprises a resection rod and a resection knife which are connected into an integer; the electric hand machine assembly comprises a machine shell, a handle, a bevel gear and a control switch, the machine shell is connected with the handle by a thread, the handle is internally provided with a motor, and a motor shaft is connected with the motor into an integer. The electric resectoscope for gynecologic operation is characterized in that the tail end of the resection rod is integrally provided with a lock ring seat and a tapered body, a lock head is movably sleeved on the resection rod and is provided with a fixed nut, the machine shell is internally provided with a rotating sleeve, one end of the rotating sleeve is integrally provided with a tapered sleeve, and the other end is integrally provided with a lock ring groove, the tapered body is sleeved in the rotating sleeve and is matched with the tapered sleeve at one end of the rotating sleeve, the lock ring seat is blocked with the lock ring groove, and the lock head is screwed with the rotating sleeve by a thread through the fixed nut. The invention has reasonable structure, good operating effect, convenient use and safe operation.

The invention discloses a driving mechanism of hemostasis clip applying pliers, and belongs to the field of medical instruments. The clip applying pliers comprises an extending portion, and a movablerod is arranged inside the extending portion; the driving mechanism comprises a driving end connected with the extending portion, a driving cavity is formed in the driving end and communicated with the interior of the extending portion, a driving tooth and a driven tooth are arranged in the driving cavity, the driving tooth is connected with an operation robot power device, and the driven tooth iscombined with the driving tooth to change the rotation direction of the driving tooth. A screw is fixedly connected with the driven tooth, a sliding block is connected to the screw and connected withthe tail end of the movable rod, and controls the movable rod to reciprocate in the axial direction of the extending portion; a limiting groove distributed in the axial direction is formed in the tail end of the movable rod, and a positioning rod which partially extends into the limiting groove in the movable rod is arranged on the side face of the driving cavity.

The invention discloses an anti-release medical cover mold which comprises an upper mold mechanism and a lower mold mechanism, wherein the upper mold mechanism comprises an upper moving sleeve; a stepped through hole is formed in the middle of the upper moving sleeve; the diameter of an upper pore section of the stepped through hole is larger than the diameter of a lower pore section of the stepped through hole; the stepped through hole is communicated with a fixed jack formed in the middle of the lower end of the upper moving sleeve; the diameter of the fixed jack is larger than the diameterof the lower pore section of the stepped through hole; an upper ejector rod is inserted into the lower pore section of the stepped through hole; a radial extension edge formed in the outer side wall on the top of the upper ejector rod is positioned in the upper pore section of the stepped through hole and pops up a bottom end face of the upper pore section; and the lower end of the upper ejector rod is positioned in the fixed jack and screwed onto the bottom end of an upper mold connecting block. According to the mold disclosed by the invention, a cold shut of the made bottle cover is positioned inside the bottle cover, so that the medical requirements are met. Meanwhile, rapid cooling is realized by an air-blowing annular groove and a water-cooling environment groove, and the bottle coveris automatically blown out of an annular part so as to realize rapid demolding. The anti-release medical cover mold is excellent in effect and high in efficiency.

The invention provides a medical cotton swab glue and production process, wherein the formulation includes to compositions, the composition A comprises polyvinyl acetate 10-15%, ethyl lactate 15-20%, 95% alcohol 55-60%, water 5-15%. The composition B comprises sodium carboxymethylcellulose 0.04%, and balancing water.