6results about How to "Reduced surgical steps" patented technology

The utility model discloses a cataract capsulorhexis guide ring structure, and relates to the technical field of cataract surgery, the cataract capsulorhexis guide ring structure comprises a guide ring body, the guide ring body is provided with a connecting part, the connecting part is fixedly provided with a positioning support, the guide ring body is provided with a girdling assembly, the middle position of the guide ring body is provided with an adsorption mechanism, and the adsorption mechanism is provided with an adsorption mechanism. The adsorption mechanism comprises an adsorption head mounted in the middle of the guide ring body, an adsorption opening is formed in the bottom of the adsorption head, a silica gel ring is arranged at the adsorption opening, a positioning ring seat is fixedly mounted in the adsorption head, a mounting notch is formed in the positioning ring seat, a locking mechanism is fixedly mounted in the mounting notch, and the silica gel ring is arranged on the silica gel ring. A butt joint opening is formed in the side wall of the adsorption head, and an adsorption pipeline is connected to the butt joint opening. According to the cataract capsulorhexis guide ring structure, through cooperative use of the adsorption mechanism and the locking mechanism, the annularly-cut capsular membrane can be rapidly taken out, the number of operation steps is reduced, and the operation time is shortened.

The application discloses a self-limb-source blood vessel graft reinforcing sleeve and a preparation method of the blood vessel graft, and belongs to the field of blood vessel surgical medical instruments. The reinforcing sleeve is a C-shaped open-loop tubular structure, and is sequentially provided with a proximal end anchoring area, an anastomosis covering area and a distal end anchoring area in the axial direction. The anastomosis covering area adopts a double-layer structure, and the inner layer is grafted with heparin and CD34 antibodies on the surface. Warm control self-locking buckle belts made of shape memory polymers are arranged on both sides of the longitudinal opening of the sleeve, and can be automatically closed and locked under the triggering of the body temperature of a human body. The method processes the discarded autologous blood vessels during amputation into blood vessel grafts on site, and then installs the sleeve by buckling from the side. The application does not need to be penetrated and sutured, is simple to operate, has the functions of anastomosis reinforcement, thrombosis resistance and endothelialization promotion, and the material can be gradually degraded, so that the problem that a traditional device is easy to damage blood vessels is effectively solved, and the application is suitable for amputation stump arteriovenous circulation reconstruction.

The present application relates to the technical field of surgical knives, and discloses a trabeculectomy knife with adjustable knife distance, which comprises a knife handle, a knife rod connected with the knife handle, and a knife head connected at the end of the knife rod, wherein the knife head is boat-shaped, has a knife tip and two side edges, the rear sections of the two side edges are connected and the front ends thereof meet at the knife tip, the knife head has a concave cavity, the concave cavity is provided with a chevron-shaped gap for separating the knife tip, a pair of parallel first sliding grooves are arranged in the side wall of the concave cavity, an arc-shaped plate is slidably arranged in the first sliding grooves, and the two parallel edges of the arc-shaped plate are respectively clamped in the two first sliding grooves. The trabeculectomy knife can realize mode switching of the knife head and width adjustment of the side edges by single-handed holding, the big thumb can accurately control power transmission by rotating the knob, the friction fit of the threaded transmission and the wedge structure ensures smooth movement without slipping, and the operation difficulty is reduced without the need for additional instrument assistance or double-handed operation.

This utility model relates to a metal bone needle with an openable hole and a chip-dispersing groove, comprising a metal bone needle body and an opening / closing spring. The metal bone needle body includes a cylindrical needle body and a needle tip. A threading notch or two threading notches are provided on the side of the needle body near the needle tip. An upper arc-shaped groove and a lower arc-shaped groove are respectively provided at both ends of the threading notch. A baffle is provided at the edge of the upper arc-shaped groove, and a connecting hole is provided in the lower arc-shaped groove. The opening / closing spring includes an opening / closing piece, an arc-shaped piece, and a connecting piece. One end of the arc-shaped piece is connected to the opening / closing piece, and the other end of the arc-shaped piece is connected to the connecting piece. The arc-shaped piece engages in the lower arc-shaped groove, the connecting piece is inserted into the connecting hole, and the other end of the opening / closing piece presses against the inner side of the baffle in the upper arc-shaped groove. Three or four edges are evenly distributed on the side of the needle tip, and chip-dispersing grooves are provided between adjacent edges. The advantage is that it solves the technical problem that existing needle holes cannot be opened, making it difficult to insert double-stranded sutures.

The utility model relates to the technical field of medical instruments, and discloses a unicondylar joint thighbone 3D printing guide plate which comprises a guide plate body, a thighbone far-end prosthesis far-end locking hole is formed in one side of the guide plate body, a thighbone far-end prosthesis near-end locking hole and a guide plate fixing hole are formed in one side of the guide plate body, and the outer side of the guide plate is clamped and pressed. The knee joint CT scanning 3D guide plate is reasonable in structure, knee joint CT scanning is performed before an operation, the 3D guide plate is designed, and template clamping and pressing are performed by clamping and pressing the outer side of the guide plate, clamping and pressing the inner side of the guide plate and clamping and pressing the thighbone posterior condyle during use. After a butt joint template is prepared to be clamped and pressed before an operation, a kirschner wire is driven into a guide plate fixing hole to fix and reinforce the stability of the guide plate body, the guide plate body is prevented from loosening in the osteotomy process, a bent pry is used for protecting inner side collateral ligaments on the outer side in the thighbone posterior condyle osteotomy groove thighbone posterior condyle cutting operation, and the inner side is of a closed structure to protect anterior and posterior cruciate ligaments. By means of the design, the swing saw can effectively move in the osteotomy process, and ligaments and surrounding tissue can be prevented from being damaged.

This invention belongs to the field of medical device technology and discloses a full-suture anchor system with an interlocking structure and a round flat suture band. The system includes: a full-suture anchor head, which is a circular tubular braided structure with a central cavity; a variable-diameter suture passing through the central cavity of the anchor head, the suture comprising a working section and a guide section, the guide section having a gradually tapering diameter; and a round flat suture band passing through the central cavity of the anchor head, the round flat suture band having circular braided structures at both ends and a flat band-like braided structure in the middle. Through the nested interlocking of the variable-diameter suture and the round flat suture band, parallel "suture bridge" structures can be formed between any anchors. By compressing the soft tissue, the gap between the avulsed soft tissue and bone is reduced, bringing it closer to its pre-avulsion state, which is beneficial for the regrowth and recovery of the soft tissue.