5 results about "Needle Shape" patented technology

A composite separator for a lithium secondary battery according to aspects of this disclosure comprises: a porous organic polymer substrate; a porous inorganic heat-resistant layer coated on at least one surface of the organic polymer substrate, the porous inorganic heat-resistant layer comprising inorganic particles and an organic binder polymer holding the inorganic particles together; and an organic polymer adhesive layer coated on the outer surface of the porous inorganic heat-resistant layer, the organic polymer adhesive layer comprising an organic binder polymer, wherein the inorganic particles comprise a mixture of particles with different shapes, the particles comprising i) plate-shaped particles and ii) needle-shaped particles, the plate-shaped particles comprising alumina particles, aluminum hydroxide particles, or mixtures thereof, the needle-shaped particles comprising alumina particles, aluminum hydroxide particles, or mixtures thereof, wherein the organic binder polymer included in the organic polymer adhesive layer comprises gelatin resin.

The application provides a sensor for realizing temperature gradient distribution measurement and a preparation method, wherein the sensor comprises a needle-shaped temperature measuring head at the front end and a pad area at the rear end; the sensor comprises a substrate layer and a thermocouple film layer from bottom to top; the thermocouple film layer comprises a single first thermocouple film and a plurality of second thermocouple films as positive and negative electrodes respectively; the first thermocouple film and the second thermocouple film are connected with the pad area, and the single first thermocouple film and the plurality of second thermocouple films are overlapped at a plurality of nodes to form a plurality of thermocouple temperature measuring nodes arranged along the needle-shaped direction at intervals. The needle-shaped temperature measuring head has small invasion damage, which reduces the damage to the measured material / structure to the maximum, is beneficial to high-precision measurement, and forms a plurality of thermocouple temperature measuring nodes arranged along the needle-shaped direction at intervals, so that the accurate measurement of the temperature gradient distribution in the same direction is realized.

This invention relates to the field of needle processing technology and discloses a nonwoven fabric needle processing equipment, including: a worktable, a conveying assembly, a stamping assembly, and a bending assembly. The worktable is used to support the components; the conveying assembly is installed on the worktable and conveys needle blanks; the stamping assembly is located above the conveying assembly and fixed to the worktable, and simultaneously stamps the head of the needle blank on the conveying assembly to form a needle shape; the bending assembly is installed on the worktable, and when the stamping assembly stamps the needle blank, it drives the bending assembly to bend the tail of the needle blank. This invention allows for continuous or even simultaneous stamping and bending of needles on a single machine, saving significant loading, unloading, and transfer time, effectively improving production efficiency, and resulting in straighter needle blanks, effectively reducing the difficulty of subsequent straightening.

Devices are described for injecting medicant, gel, treatment fluid or a substance into a target region in a target object. The devices include a housing with a main body and distal end portion; a moveable needle at a distal end portion and having a needle tip with a needle bore opening for injection into the target region; an actuation assembly for deploying the needle along a needle insertion trajectory to the target region; and a dispensing assembly for moving the medicant, treatment fluid or substance to the needle tip. The needle and / or device is adapted to reduce backflow of the medicant, gel, treatment fluid or substance during injection by having (a) a needle shape for the needle tip and / or a needle shaft, and / or (b)the needle insertion trajectory that are adapted to place substantially all of the needle bore opening in the target region and reduce gaps between the needle and surrounding portions of the target object.

The utility model relates to the technical field of indwelling needle, concretely to an indwelling needle with built-in guide wire, which comprises a guide tube, one end of the guide tube is connected with a needle seat, one end of the needle seat is connected with a sleeve with a needle body, a needle-shaped hose is sleeved on the sleeve, a guide wire is slidably inserted into the guide tube, the guide wire is used for guiding the needle-shaped hose to be inserted into the human body, the axis of the guide wire coincides with that of the guide tube and extends into the sleeve, the design of the indwelling needle with built-in guide wire can greatly simplify the indwelling process through the accurate guidance of the built-in guide wire, medical staff only need to insert the guide wire into the guide tube and then push the needle-shaped hose into the blood vessel along the guide wire, the simplified operation steps not only greatly improve the success rate of one-time indwelling, but also enable the indwelling needle to enter the blood vessel more smoothly and stably through the accurate guidance of the built-in guide wire, thereby reducing the damage to the blood vessel wall and the thrombosis rate in the indwelling puncture process.