3 results about "Pelvic surgery" patented technology

The invention discloses a pelvic channel screw positioning system with a digital navigation interface, and belongs to the technical field of medical instruments, the pelvic channel screw positioning system comprises an arc-shaped positioner main body, a guide sleeve slidably connected to an adjusting device through a sliding block and a locking mechanism, and the digital navigation interface is rigidly fixed to the side portion of the guide sleeve. The digital tracing interface is used for installing an optical or electromagnetic space tracing element, and when the guide sleeve slides in the second sliding groove along with the sliding block, the digital tracing interface synchronously collects vector displacement data and converts the vector displacement data into needle passage axis coordinates through a mapping matrix. The problem that repeated X-ray perspective positioning is needed in a traditional pelvic surgery is solved, real-time needle insertion deviation feedback is achieved through a digital interface, the accuracy of screw implantation is remarkably improved, and the risk of radiation exposure of doctors and patients is reduced.

This invention belongs to the field of biomedical polymer materials. Specifically, it relates to an injectable dual-network hydrogel, its preparation method, and its application in long-term prevention of postoperative tissue adhesion. The hydrogel consists of two interpenetrating three-dimensional cross-linked networks: one is a polysiloxane network formed by the condensation polymerization of γ-aminopropyltrialkoxysilane; the other is a hyaluronic acid network formed by the cross-linking of thiolized hyaluronic acid through dissolved oxygen oxidation under the catalysis of amino groups in the polysiloxane network. The two networks interpenetrate to form a stable three-dimensional cross-linked structure. Compared with existing anti-adhesion materials that struggle to balance biocompatibility, wet tissue adhesion, and long-term stability, the hydrogel of this invention exhibits good biocompatibility, wet tissue adhesion performance, a slow degradation rate, and injectability. It can be used as a medical barrier material for the prevention of postoperative tissue adhesion, especially suitable for long-term anti-adhesion applications after abdominal and pelvic surgeries.

The invention belongs to the technical field of medical drugs, and particularly relates to flushing fluid for surgical operation and a preparation method of the flushing fluid. The flushing fluid for the surgical operation is formed by taking sodium hyaluronate, hydroxyethyl cellulose, trehalose and D-panthenol as active ingredients and sodium chloride and phosphate as buffer solutions, and has good moisture retention, lubricity, biocompatibility and biodegradability; in the abdominal and pelvic cavity operation process, the effect of keeping exposed visceral organs and tissue surfaces wet is achieved, and visceral tissues can be effectively prevented from being dry and losing water. By generating a layer of protective water film on the surfaces of visceral organs, the flushing fluid for the surgical operation can prevent the conditions of visceral organ serous membrane injury and tissue adhesion during and after the operation. Meanwhile, sodium hyaluronate and D-panthenol contained in the flushing fluid for the surgical operation have the anti-inflammatory characteristic, the wound healing process can be accelerated, and the occurrence rate of postoperative complications is reduced.