61results about How to "Reduce Surgical Injuries" patented technology

The invention provides a percutaneous tracheostomy device comprising a tearable conduit sheath, a puncture needle and a tracheal cannulapuncture needle pierces the trachea, leads the tearable conduit sheath to enter the trachea and is pulled out of the tearable conduit sheath; the tearable conduit sheath, is led by the tearable conduit sheath to enter the trachea; and the tearable conduit sheath can be torn and the trachea. The outside diameter of the tearable conduit sheath. The puncture needle, the tearable conduit sheath and the tracheal cannulapercutaneous tracheostomy device has the advantages of no need of cutting apart the wall of the trachea, small injury, less operation sequelae, simpleness and safety in operation, lower operation expense and the like.

The invention belongs to the technical field of medical polymer materials and in particular relates to X ray developing thermotropic hydrogel and a preparation method thereof. The X ray developing thermotropic hydrogel comprises an iodine-containing amphiphilic block copolymer and a solvent, wherein the iodine-containing amphiphilic block copolymer is obtained by bonding an iodine-containing micromolecule and an amphiphilic block copolymer by virtue of a covalent bond, and thermotropic gelatinization phase transformation can be carried out on a water system of the X ray developing thermotropic hydrogel along with temperature increase. The thermotropic hydrogel can be implanted under the skin and implanted into an abdominal cavity, an articular cavity and other specific parts of a human body in a mode of injection, and in situ formed hydrogel has good X ray developing performance, clear positioning and long-term tracing observation can be carried out on the hydrogel by adopting an X ray radiography technique. The thermotropic hydrogel also can serve as a medicine controlled release carrier, a tissue repairing support, a blood vascular embolization agent, a tissue marker and the like and can be used for realizing integration of diagnosis and treatment.

Provide a system and method for use in NOTES so as to reduce surgical invasiveness. An insertion body that is connected by an anvil assembly and joined to a thin wire guide (electric guide wire), is inserted via a natural orifice into a hollow organ so as to incise and remove a diseased or defective site from the hollow organ by using a pair of (front-end / rear-end) linear cutters of a linear cutting / stapling device (linear stapler), after which the two cut ends of the tract are anastomosed and recovered by a circular anastomosis surgical stapler that is equipped with the system.

The invention is an arc-shaped sawtooth scissors meniscus trimmer, relates to a meniscus minimally invasive trimming surgical instrument, which can also be used for tissue excision in narrow gaps, and belongs to the field of medical instruments. The present invention has two annular handles, which are respectively connected to the main rod and the auxiliary rod. The main rod has a concave chute, and the auxiliary rod is located in the chute of the main rod. The front ends of the main rod and the auxiliary rod are scissor blades, which are in the shape of a 45-degree arc, which conforms to the physiological curvature of the meniscus. The scissor blades of the main rod are fixed, and the scissor blades of the auxiliary rod can be opened and closed. The finely serrated cutting edges of the scissors hold and bite the meniscal tissue that needs to be trimmed. When the handle of the sub-rod of the present invention moves closer to the handle of the main rod, the sub-rod slides backward along the chute of the main rod, so that the scissors of the sub-rod are closed with the scissors of the main rod, and the sawtooth of the cutting edge is fixed and bites the meniscus to be removed organize. When the handle of the auxiliary rod is separated from the handle of the main rod, the auxiliary rod slides forward along the chute of the main rod, so that the scissors of the auxiliary rod are separated from the scissors of the main rod, and the process of cleaning the meniscus is completed.

A retinal vein microneedle device belongs to a medical device, comprising an iontophoresis chamber and a microneedle, wherein the iontophoresis chamber is a hollow structure with openings at both ends and contains a therapeutic medium, and one end of the iontophoresis chamber is opened as The drug delivery end is buckled on the eyeball of the patient, and the other end is opened as the observation end, and the observation end is provided with a first electrode, the side wall of the iontophoresis chamber is evenly opened and connected to insulating hoses respectively, each insulating soft tube. The tubes are respectively connected with a microneedle; the microneedle is a hollow tubular shape, the front end of the microneedle is a second electrode, and the tail end of the microneedle is connected with an insulating hose, and under the guidance of the second electrode, the iontophoresis room medicine The ions are introduced into the mid-posterior segment of the patient's eyeball, with the first electrode and the second electrode having opposite polarities. The invention has the advantages of large medicine delivery range, high medicine delivery efficiency, small side reaction to patients and side injury of operation, and good operation effect.