A device for cutting and removing pituitary tumors

Abstract

The invention discloses a pituitary tumour cutting and clearing-away device. The pituitary tumour cutting and clearing-away device comprises an external clearing-way machine, a drainage tube and a sucking mechanism, wherein the external clearing-away machine is connected to the drainage tube; a negative-pressure suction machine is started; the drainage tube is used for guiding and draining pituitary tumours into a tumour substance collecting box; a sucking head sucks pituitary tumours; after last-time sucking is finished, the sucking tube is pulled upwards, so that extrusion force, on elastictelescopic plates at two sides, of the sucking tube disappears, the elastic telescopic plates at the two sides are shrunk to be closed in a contact mode, and therefore, the drainage tube is preventedfrom generating reflow to make sucked pituitary tumours flow back, the sucking head is prevented from being exposed in air for a long term to be infected with bacteria, and possibility of bacterial infection in operation is reduced; when the sucking mechanism is used again, the sucking tube is downwards extruded, so that two side walls of the sucking tube cling to the elastic telescopic plates, and the sucking head passes through a tube orifice to suck the pituitary tumours; the sucking head adopts a flat tube body, and the inner cavity of the sucking head is gradually reduced from back to front, and a formed liquid knife is more sharp, so that practicability of the device is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a device for cutting and removing pituitary tumors. Background technique [0002] Pituitary tumors are a group of tumors originating from the anterior pituitary gland. Pituitary tumors usually occur in young adults, and often affect the patient's growth and development, reproductive function, learning and work ability. The clinical manifestations are abnormal hormone secretion syndrome, tumor compression of the surrounding tissues of the pituitary gland, pituitary apoplexy and other pituitary anterior lobe Dysfunctional manifestations. At present, the treatment of pituitary tumors is still mainly surgery, supplemented by drug therapy and radiation therapy. The pituitary tumor is located in the sellar region, surrounded by important nerve structures such as the optic nerve, internal carotid artery, cavernous sinus, and hypothalamus, so surgery still has certain risks. A...

AI Technical Summary

Problems solved by technology

Tumors with a diameter greater than 3 cm that are adhered to the optic nerve or have impaired vision must be treated surgically first. The surgery must achieve sufficient decompression of the optic nerve. When performing pituitary tumor resection, most of the tumors are soft and easy to scrape and low pressure Therefore, stripper stripping and suction tube suction are mostly used. In order to prevent the tumor "capsule" or sellar septum from prematurely collapsing into the sella and affecting the resection of surrounding tumors, the order of resection should be first peripheral and then central. At present, transsphenoidal sinus The main surgical method is to extend into the stripper or suction tube through the sphenoid sinus. Since the space for the sphenoid sinus to penetrate is limited and an endoscope is required for peeping, the operation Physicians use strippers and suction tubes repeatedly and alternately, which greatly prolongs the operation time, and when the strippers are used to forcibly strip the surgeons, high operating skills are required, and the tumor "capsule" blood vessels may rupture, resulting in subarachnoid space Bleeding may also lead to cerebrospinal fluid leakage due to damage to the saddle diaphragm. It is difficult to completely remove tumors with obvious hard and tough adhesions, which affects the quality of surgery. Most of the existing pituitary tumor cutting and removal devices are equipped with negative pressure suction machines. When the use is stopped, it is easy to generate a reverse pressure difference, which will cause the pituitary tumor in the tumor material collection box to flow back, which is prone to medical accidents and increases the difficulty of operation. The long-term exposure of the suction head to the air is easy to be contaminated with bacteria, which increases the possibility of bacterial infection during surgery. sex

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