31 results about "Removal tumor" patented technology

A cutter (8) is telescopically received in a cannula (9) and both the cutter and cannula are telescopically mounted on a tubular carrier (7). A detection device (6) may be inserted through the open-ended carrier, cutter and cannula to properly place the surgical instrument in alignment with the tumor to be excised. Positioning tines (80) may penetrate the patient to firmly locate the carrier in its proper position on the patient. The cutter and cannula are moved about the carrier and are pressed into the tissue of the patient with the expectation that the circular core (60) of breast tissue formed by the cutter will have clear margins about the tumor. If the tumor extends too close to the circular incision, the cannula may be rotated so that its sidewall opening (26) faces the side of the remaining tissue to be excised and the surgeon can pull the remaining tissue through the sidewall and excise it, thereby avoiding a separate and delayed surgical procedure.

The invention relates to methods for locally delivering a chemotherapeutic agent to an upper tract urothelial carcinoma (UTUC). The methods involve placing a balloon catheter that has a working channel and a balloon into the ureter / renal pelvis via retrograde or antegrade ureteral access; inflating the catheter balloon to temporarily obstruct the ureter; infusing (instilling) a liposomal formulation that includes a chemotherapeutic agent into the working channel of the catheter; and allowing the infused liposomal formulation to dwell in the ureter and / or renal pelvis for a time sufficient to allow at least a portion of the liposomal formulation to adhere to the urothelial wall. In the methods of the invention, at least a portion of the infused chemotherapeutic-agent formulation adheres tothe urothelial wall while it is instilled and dwells in the ureter and / or renal pelvis. The disclosed methods can be performed as an adjuvant therapy to other methods of treating UTUC, such as ureteroscopic ablation or resection of the tumor.

The invention relates to a catheter device and a method thereof for waking up the anesthesia in a brain functional region surgery, comprising a tracheal catheter, an opening is formed on the top of the outer end of the tracheal catheter which is inserted to the esophagus direction, the top part of the inner end is closed, an esophagus closed cuff is arranged in the vicinity of the top part of theinner end, a pharyngeal cavity closed cuff is further arranged on the tracheal catheter; a vent hole is arranged at the part of the tracheal catheter between the esophagus closed cuff and the pharyngeal cavity closed cuff for leading an air duct to be communicated with and a glottis of a trachea; the esophagus closed cuff and the pharyngeal cavity closed cuff are respectively connected with a ventpipe. The catheter device is provided with the esophagus closed cuff and the pharyngeal cavity closed cuff on the tracheal catheter and is provided with the vent hole between the esophagus closed cuff and the pharyngeal cavity closed cuff, so the usage of the catheter device of the invention for carrying out the waking-up of the anesthesia can not only meet the requirements on the precise positioning of the function region, but can also be safe and convenient, and the catheter does not need to be inserted and drawn repeatedly, thus eliminating the risks of excessive injuries of a patient, being able to resect a tumor to the maximum extent and protecting the normal brain tissues of the brain functional region to the utmost extent.

The present invention relates to a multi-point precise sampling system, method and device for brain tumors. Outline the tumor boundary and obtain MRI data within the tumor boundary; extract MRI data and convert the MRI data into first-order features, second-order features, shape features, and texture features; obtain a 3D topographic map of the cerebral cortex through 3D reconstruction and spatial clustering , realize the classification of tumor subregions; use CT data and MRI data to formulate a navigation plan, calibrate the scope of tumor resection, and obtain the reference coordinates of the tumor boundary and tumor entity, map to the radiomics partition constructed by MRI, and obtain the location of each partition Center position coordinates and fault-tolerant boundary coordinate intervals; import the tumor boundary and the reference coordinates of the tumor entity into the AR device, and remove the tumor focus; import the 3D topographic map and sub-region classification of the cerebral cortex into the laser positioning and material collection device, and use the laser positioning and material collection device Slice layer by layer. Accurate positioning of tumor lesions and sampling.