Micro-tech (nanjing) Co., Ltd.

Beijing Friendship Hospital, Capital Medical University

Nanjing Rongsheng Medical Technology Co., Ltd.

Shengjing Hospital of China Medical University

Micro-tech Co., Ltd.

Chunjun Liu

Huan Liu

Derong Leng

Changqing Li

Jianjun Shuang

Ming Ji

Zhenghua Shen

Jianyu Wei

Hongyan Jin

Yonghua Dong

Jie Hu

Zhi Tang

Gaojun Teng

Yuqian Li

Hui Liu

Jiefeng Xi

Siyu Sun

Ning Li

Jialing Sun

Shutian Zhang

Huihong Zhai

Jinhe Guo

Jinwei Pang

Haidong Zhu

Changging Li

Yongxue Zhao

Jintao Guo

Xiaochun Li

Chaowei Xu

Nan Ge

Provided are a pressure-pump cartridge and a pressure pump, where the pressure-pump cartridge includes a cylinder, where the cylinder has a first chamber, a piston chamber and a second chamber hat are in communication in sequence, and the piston chamber is used for being in sealing fit with a piston. An end of the first chamber remote from the piston chamber is provided with a first opening allowing entry of the piston, and during installation, the piston enters the first chamber by the first opening and enters the piston chamber after passing through the first chamber, and meanwhile, the first chamber is configured to be in a clearance fit with the piston, such that the size of the first chamber is larger than that of the piston.

Pressure-pump cartridge and pressure pump

Provided is a medical device implantation apparatus, comprising: an outer sheath, connected to a first portion of a handle and extending from a proximal end to a distal end; a middle sheath, the middle sheath being arranged in the outer sheath, and the middle sheath being connected to a second portion of the handle; an inner sheath, the inner sheath being allowed to pass through the middle sheath, the inner sheath being connected to a third portion of the handle, and the inner sheath being movable relative to the outer sheath; outer casings, with at least two outer casings being provided, and a distal end of the inner sheath being respectively fixedly connected to the outer casings; and a medical device, arranged around the inner sheath and partially accommodated in the outer casings.

Medical device implantation apparatus

A traction apparatus, comprising a clip portion () and a traction portion (), the traction portion containing a closed traction structure (); the closed traction structure being made from an elastic material; the clip portion comprising a main clip body () and a clip arm (); the main clip body being capable of passing through a biopsy channel () of an endoscope (), the clip arm being capable of clip the closed traction structure. Also disclosed is a traction ring used for the traction apparatus, the traction ring being a single closed traction structure or being formed by connecting several closed traction structures, the traction ring being made from an elastic material.

Traction apparatus and traction ring for traction apparatus

An endoscope end cap, including a sleeve member, protrusion elements, and a movable sleeve. The sleeve member is connected to the front end of an endoscope, the sleeve member, the protrusion elements, and the movable sleeve are connected in sequence, and the movable sleeve can move freely on the outer surface of the endoscope. When the endoscope is inserted for examination, the end cap is easy to enter and does not scratch the digestive tract since the end cap has a cylinder-like structure which is smooth and has no angularity; when the endoscope is being withdrawn, the movable sleeve moves distally and abuts against the sleeve member, so as to support the protrusion elements to enable the protrusion elements to dilate the inner wall of the intestine, improving the quality of single endoscope examination, and reducing discomfort of a patient, operation risk, and operation time.

Endoscope end cap

Provided in the present invention is a three-dimensional precise intracavitary radiotherapy method and system for treating tumours, comprising the steps of: (1) lesion three-dimensional quantitative measurement and analysis of three-dimensional scanning image of the lesion cavity; (2) comprehensive analysis according to lesion three-dimensional quantitative measurement results and lesion characteristics to calculate the three-dimensional distribution of lesion radiation dose; and (3) according to the three-dimensional distribution diagram of radiation dose, selecting appropriate radiation sources and radiation dose to make a stent, and performing three-dimensional precise intracavitary radiotherapy. At the same time, also provided by the present invention is a system for achieving the above radiotherapy method. The present invention uses modern medical imaging three-dimensional reconstruction technology for realizing three-dimensional precise internal radiotherapy to treat tumours with an optimized radiation dose and protect normal tissues to an extreme.

Three-dimensional precise intracavitary radiotherapy method and system for treating tumours

Growing community of inventors

Nanjing, China

Chunjun Liu