Portal vein thrombus taking-out clamp for laparoscopic surgery

Abstract

The invention belongs to the field of medical apparatuses and instruments, and relates to a clamp device for clamping portal vein tumor thrombus or thrombus in laparoscopic surgery. The device is characterized by comprising a clamp portion, a casing pipe, a handheld handle, a solid pull rod and a hollow connection pipe, and the solid pull rod and the hollow connection pipe are arranged in the casing pipe and used for connecting the clamp portion with the handheld handle. The clamp portion comprises an opening and closing device, a clamp head A and a clamp head B, wherein the clamp head A and the clamp head B are symmetrical in size and shape, and the inner side of each clamp head is a semi-arc concave face. The clamp head A is of a solid structure, the inner wall of the concave face is smooth, and the clamp head A is connected with the pull rod through the opening and closing device. The clamp head B is of a hollow structure, the concave face of the clamp head B is provided with tiny holes, and the inner space of the clamp head B is connected with an aspirator through the hollow connection pipe to transfer negative pressure. When the handheld handle is tightened, the pull rod closes the clamp head A and the clamp head B through the opening and closing device, and the semi-arc hollow concave faces of the inner sides are oppositely combined to form a closed thrombus taking-out cavity. The portal vein thrombus taking-out clamp for laparoscopic surgery can effectively and safely take out portal vein tumor thrombus, is easy to design and manufacture and has a wide market prospect.

Description

Technical field [0001] The invention relates to a clamping device for taking out tumor thrombus or thrombus in portal vein in laparoscopic operation, especially suitable for taking out thrombus of portal vein tumor thrombus in laparoscopic operation for liver cancer with portal vein tumor thrombus, and belongs to the technical field of medical devices. Background technique [0002] Liver tumors easily invade the portal vein, that is, tumor thrombus occurs in the portal vein. Surgical treatment can bring survival benefits to such patients. Whether the tumor thrombus in the blood vessel can be completely removed during the operation directly affects the tumor recurrence and survival time of the patient. With the advancement of technology, laparoscopic liver resection has been widely carried out. However, for patients with liver cancer and portal vein tumor thrombus, there is no laparoscopic vascular tumor thrombus removal forceps in clinical practice, and only laparoscopic ston...

AI Technical Summary

Problems solved by technology

This method of thrombectomy has many disadvantages: the effective contact area of ​​stone removal or grasping instruments under conventional laparoscopy is small, and the forceps cannot effectively accommodate the tumor thrombus, the efficiency of thrombus removal is low, and the operation is relatively difficult, resulting in prolonged operation and hepatic portal blockage

At the same time, due to the relatively soft texture of the portal vein tumor thrombus, the tumor thrombus is easily broken during thrombectomy, which may easily lead to tumor dissemination in the abdominal cavity or in the Trocar.

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