5results about How to "Effective hemostasis" patented technology

The utility model relates to the technical field of medical supplies, in particular to degradable medicine-carrying hemostatic cotton with a double-layer structure, which comprises an internal hemostatic layer and an external functional layer wrapping the hemostatic layer, and the hemostatic layer and the functional layer are respectively formed by freeze-drying same polymer solutions with relatively high mass concentration and relatively low mass concentration. The functional layer is loaded with drugs, the porosity of the hemostatic layer is 60%-80%, and the porosity of the functional layer is 80%-90%. The high-concentration and low-porosity inner hemostatic layer provides mechanical compression force to play a role in rapid hemostasis in the initial stage, the low-concentration and high-porosity outer functional layer can be rapidly degraded, both compression strength and degradation speed are considered and balanced, meanwhile, the outer functional layer is used for loading drugs, and the outer functional layer has the characteristics of high porosity and rapid degradation, so that the effect of rapid hemostasis in the initial stage is achieved. The effect of rapidly releasing the medicine is achieved, it can be ensured that the medicine can be rapidly released to the bleeding part, and wound healing is promoted.

The utility model discloses a cardiac surgery postoperative wound pressurizing nursing belt, which relates to the technical field of medical nursing and comprises a pressing plate and straps arranged on two sides of the pressing plate, and a plurality of groups of pressurizing air bags are arranged on the pressing plate. The side face of the pressing plate is provided with an inflation inlet used for inflating the pressurizing air bag, and the outer side of the inflation inlet is rotationally sleeved with an air inlet. A plurality of groups of air inflation holes are formed in the air inflation port, and the air inflation holes are communicated with the pressurizing air bag through air delivery pipes; a group of air inlet holes corresponding to the inflation holes are formed in the bottom of the air inlet; an annular positioning seat is fixed to the middle of the inflation inlet, and a wavy guide groove is formed in the inner side of the positioning seat. A guide seat is mounted on the air inlet, and the guide seat is connected into the positioning seat through a reset spring; a guide pin clamped in the guide groove is arranged on the side surface of the guide seat; the specific air bag is independently inflated or deflated by adjusting the states of the inflation inlet and the air inlet.

This invention relates to the field of medical high-fidelity training model technology, and discloses a multi-vascular network biomimetic hemostasis model and method for junctional wounds. The model includes a biomimetic model, a blood bank system, a control system, and a temperature control unit. A biomimetic multi-vascular network is embedded in the junction area of ​​the biomimetic model, and a biomimetic wound opening is provided at the corresponding position of the biomimetic multi-vascular network. The input end of the biomimetic multi-vascular network is connected to the output end of the blood bank system, and the output end of the biomimetic multi-vascular network is located inside the biomimetic wound opening. The temperature control unit is located at the input end of the biomimetic multi-vascular network. A pressure sensor is provided in the biomimetic wound cavity wall of the biomimetic wound opening, and hemostatic material is filled inside the biomimetic wound opening, with the hemostatic material in contact with the pressure sensor. The control terminal of the control system is electrically connected to the blood bank system, the temperature control unit, and the pressure sensor. This invention can realistically simulate the bleeding process of penetrating and blind-tube injuries in the junctional wound of the simulation model, facilitating simulation training.

The utility model belongs to the technical field of medical apparatus and instruments. The utility model discloses a kind of urinary surgery auxiliary anastomosis section with guiding positioner, including the pipe body with at least one cavity way;Guiding positioner head for the suture vector of suture needle is positioned and guided in one end of the pipe body, another end of the pipe body away from the guiding positioner head is also equipped with connector;It also includes the gasbag assembly for reducing anastomotic opening tension and assisting to complete pipeline limited indwelling in surgical process for being equipped on the pipe body.The utility model has the advantages of being able to accurately position and guide the suture vector of suture needle to reduce surgical risk, being able to complete pipeline limited indwelling and reduce anastomotic opening tension and reduce anastomotic opening tension in surgical process.

This invention relates to a two-component cross-linked oxidized nanocellulose spray hemostatic gel, its preparation method, and its application, belonging to the field of biomedical materials. Addressing the problems of weak adhesion, insufficient mechanical properties, and biocompatibility risks in existing hemostatic materials, this invention introduces aldehyde groups using sodium periodate to prepare an adhesive component (TOCN-CHO), and simultaneously modifies the carboxyl groups of TOCN with lysine to create a cross-linking component (TOCN-Lys). After the two components are sprayed and mixed, the aldehyde groups of TOCN-CHO bind to the amino groups on the tissue surface to achieve wound sealing. Simultaneously, the amino groups of TOCN-Lys form a Schiff base cross-linking network in situ with the aldehyde groups of TOCN-CHO, enhancing mechanical strength while eliminating aldehyde toxicity. The gel retains shear-thinning properties and can be sprayed. Animal experiments show that the hemostasis time is reduced to 28 seconds. It also exhibits biodegradability and renewability, effectively solving the problem of synergistic optimization of adhesion, mechanical strength, and biocompatibility, making it suitable for emergency hemostasis and surgical scenarios.