32results about How to "Reduce drag force" patented technology

The invention discloses a highly antibacterial absorbable medical suture. The raw materials include: 100-120 parts of carboxymethyl chitosan, 20-30 parts of polyglycolic acid, hyaluronic acid 6‑10 parts of acid, 6‑12 parts of silk fibroin, 8‑12 parts of salmon collagen, 1‑2 parts of glutaraldehyde, 2‑4 parts of genipin, 1‑3 parts of mannitol, 1‑2 parts of glycerin, 2-7 parts of coating; Wherein, the preparation method of coating is: in ice bath, chitosan is added in the concentrated sulfuric acid and dissolves, and sorbyl chloride is added dropwise, stirs, and cooling, insulation, purification, obtains modified chitosan; The modified chitosan is dissolved in a mixed solvent to obtain a solution B; the temperature is raised, a silver nitrate solution is added, the mixture is kept stirring, a reducing agent is added dropwise, the mixture is kept stirred, and purified to obtain a coating. The invention has good antibacterial and anti-inflammatory properties and good mechanical properties.

The invention discloses an absorbable medical suture thread with good degradation resistance and compatibility, which is obtained by braiding at least one first fiber and / or second fiber, wherein the first fiber includes a first core and is coated on the first thread The first coating on the outside of the core, the second fiber includes a second core and a second coating on the outside of the second core. The present invention also discloses a preparation method of the above-mentioned absorbable medical suture with good degradation resistance and compatibility, comprising the following steps: S1, preparing the first wire core; S2, preparing the second wire core; S3, coating weaving. The invention is resistant to degradation, has good mechanical properties, and has good compatibility with biological tissues, is beneficial to cell adhesion and propagation on the invention, is easy to operate, and is beneficial to industrialized production.

The invention provides a cable and a cable component. The cable comprises a cable reinforcing core, conductors, a wrapping layer for wrapping the cable reinforcing core and the conductor, a tensile and compressive mechanism for protecting the cable, and an adaptive protection mechanism for assisting the cable to adapt to an underwater environment. The surface of the cable reinforcing core is sleeved with an inner wrapping layer, the plurality of conductors are arranged around the cable reinforcing core, and the surface of each conductor is sleeved with an insulating layer. The invention relates to the field of cables. According to the cable and the cable component, two mutually associated special structures are arranged, for the problems of cables under trees, the large pressure borne by the cable is relieved, and the underwater adaptability of the cable is enhanced, thereby effectively solving the problems that when a common cable is used underwater, the pulling time and strength of the cable are large, the cable is liable to be rolled, the internal structure of the cable is liable to be delaminated and damaged, the maintenance work difficulty of the damaged cable is large, and the cost is high.

The invention discloses a good-compatibility and absorbable medical suture line which comprises, by weight, 20-40 parts of polyglycollide, 10-20 parts of modified polylactic acid, 50-70 parts of polylactic acid, 10-20 parts of hyaluronic acid, 5-7 parts of methyl methacrylate, 4-6 parts of epoxidized soybean oil, 2-4 parts of tea tree oil, 1-5 parts of polycaprolactone and 0.1-0.3 part of calcium stearate. The invention further discloses a production method of the good-compatibility and absorbable medical suture line. The method includes the steps of S1, producing suture line fibers; S2, preparing coating solution; S3, braiding coating. The medical suture line has the advantages that the suture line is good in compatibility with biological tissues, good in mechanical performance, resistant to degradation and simple to operate, adhesion and reproduction of cells on the suture line are facilitated, and industrial production is facilitated.

The invention relates to a floating plate device for deposition promotion and strengthening of a sunken fascine mattress. The floating plate device comprises an inflation floating plate, anchor piles and hanging ropes. The inflation floating plate is made of waterproof and weatherproof flexible materials. The inflation floating plate is in a plate shape after being inflated with air. The thickness of the inflated floating plate is controlled through plate inner reinforced belts, and the strength of the floating plate is improved by adding reinforcement strips outside longitudinal plates and transverse plates which are arranged on the double faces. The height of holes in the lower edge of the floating plate is controlled with the length of the hanging ropes for bottom high-sand-content water to pass. The anchor piles are anchored in silt of a bottom bed and connected with the inflation floating plate through the hanging ropes, anchoring force is provided for the inflation floating plate, the modular design is adopted in the floating plate device, the floating plate device can be installed on a large area of an area easy to scour, and scouring protection and silt deposition promotion are carried out. When the installed floating plate reaches the sand deposition promoting limit, the upper edge of the floating plate can be connected and provided with a next-period floating plate device, and the function of deposition promoting continues to be performed. Compared with the prior art, the floating plate device has the beneficial effects that cost is low, installing is convenient, modular design and self protection are achieved, and the underwater ecological environment can be improved.

The invention provides a water surface jumping and gliding robot, comprising a water surface support system, a main body support frame, a driving system, a pitch angle adjustment mechanism, an energy storage spring, two driving legs and two space elliptical trajectory mechanisms; the main body support frame is located on the water surface support Above the system, the main support frame and the water surface support system are connected through a pair of hinge seats. Two spatial elliptical trajectory mechanisms are symmetrically installed on the left and right sides behind the main support frame. Each spatial elliptical trajectory mechanism is equipped with a driving leg. The pitch angle The adjustment mechanism is arranged on the left front of the main body support frame, the pitch angle adjustment mechanism is connected to the main body support frame and the water surface support system, the drive system is fixed inside the main body support frame, and the two ends of the energy storage spring are respectively connected to the drive system and the water surface support system. The invention is manufactured by 3D printing technology, uses tension springs as energy storage elements, foam hemispheres and foam boards as supports, and has the characteristics of light weight and diversified movement modes.

The invention discloses a slow-release antibacterial and absorbable medical suture. The raw materials include: 80-100 parts of carboxymethyl chitosan, 10-15 parts of red sea bream skin collagen, and 8-12 parts of grass carp collagen. , 10‑20 parts of pig bone collagen, 1‑3 parts of mannitol, 1‑3 parts of epoxidized soybean oil, 1‑3 parts of glycerin, 2‑3 parts of vanillin, 1‑2 parts of genipin, diisopropyl 2‑4 parts of carbodiimide, 0.5‑1 part of aldylated starch, and 1‑5 parts of paint. The invention also discloses a preparation method of the slow-release antibacterial absorbable medical suture, which includes the following steps: S1, preparing suture fiber; S2, preparing a coating solution; S3, coating weaving. The invention has good antibacterial performance, long-term antibacterial ability, good compatibility with biological tissues, easy adhesion and reproduction of cells on the invention, simple operation, less environmental pollution, and is beneficial to industrial production.

A fire-fighting water monitor capable of accommodating a hose disclosed by the present invention comprises a chassis, a center column is rotatably provided on the upper end of the chassis, and a water passage cavity with an upward opening is arranged inside the center column, and the outside of the center column The circular surface is wound with a water belt, and one end of the water belt wound inside is fixedly connected to the left end of the outer circular surface of the central column, and the left wall of the water passage chamber is connected with a water inlet connected to the water belt. The outermost end of the water belt wound on the outermost side is fixed with a joint that can be installed with the fire hydrant. The invention facilitates the rapid movement of the water cannon to the injection point through the movement of the rollers. At the same time, the water cannon itself is fixedly connected with the water belt, reducing the The splicing work of the hose speeds up the water supply efficiency. At the same time, when the hose is stored, the fire water cannon can be pushed to move along the laying route of the hose, and the hose can be wound by rolling the roller, which can reduce the impact on the water. The drag force of the belt reduces the wear of the hose, and reduces the working intensity of the storage hose.