Accutarget Medipharma (shanghai) Co., Ltd.

Accu Target Medipharm (shanghai) Co., Ltd.

Binkai Xu

Chi Yang

Yinlong Wu

Rui Zhang

Qi Li

Zhaohua Chang

Xiangtong Chang

Kaiqiang Chang

Jinting Liu

Disclosed is an adjustable cryoablation needle, comprising a needle rod (), a front-segment heat-insulated tube (), a rear-segment heat-insulated tube (), and an gas inlet structure () penetrating the needle rod () and the front-segment heat-insulated tube (), wherein the needle rod () can move relative to the rear-segment heat-insulated tube () in the axial direction of the rear-segment heat-insulated tube () so as to adjust a first axial distance between the front end of the rear-segment heat-insulated tube () and the front end of the needle rod (); and the front-segment heat-insulated tube () can move relative to the rear-segment heat-insulated tube () in the axial direction of the rear-segment heat-insulated tube (). The adjustable cryoablation needle can prevent the inconvenience caused by a doctor selecting the model of the cryoablation needle.

Adjustable cryoablation needle

The present invention provides a biopsy rotary cutting device, which comprises a dynamic sealing structure() arranged outside an inner cutting cannula(); the dynamic sealing structure() forms a cavity outside the inner cutting cannula(); the inner cutting cannula() comprises a first tube section() and a second tube section() that are arranged in sequence along the axial direction of the inner cutting cannula(); the outer diameter of the second tube section() is smaller than that of the first tube section(); a sealing ring() is arranged inside the dynamic sealing structure(); the cavity comprises a first cavity() and a second cavity(); when the inner cutting cannula() moves to a first position along its axial direction, the sealing ring() is located at the outer side of the second tube section(); and there is an inter-cavity gap() between the sealing ring() and the second tube section() to realize communication between the first cavity() and the second cavity(). The present invention can introduce the atmosphere to form a circulating air flow with better suction strength, and the circulating air flow can more efficiently send a rotary-cut tissue at a corresponding position to a sample collector at the back end, thereby effectively improving the sample discharge rate.

Biopsy rotary cutting device

The disclosure provides a flexible cryoablation needle device resistant to a low temperature and a high pressure, a threaded part is arranged on the outer wall of a liner pipe to enhance a connection strength between the liner pipe and a flexible pipe structure. Since an annular protrusion portion is arranged on the outer wall of the liner pipe, further leakage of a gas coming from a pressure relief process is prevented and the connection strength is enhanced as well. Air tightness and connection strength are further guaranteed by radial extrusion of extruding pipes. And an inner cavity in a cutter head is directly subjected to pressure relief through a cutter head vent, a pressure relief intermediate cavity, a liner vent, a flexible pipe vent and a pressure relief gap.

Flexible cryoablation needle device resistant to low temperature and high pressure

Growing community of inventors

Shanghai, China

Binkai Xu