Negative-pressure tumor-holding device

Abstract

The invention provides a negative-pressure tumor-holding device. The negative-pressure tumor-holding device comprises a protective cannula, an air passage pipe and a sucker. An axial through hole is arranged in the protective cannula. An accommodation space is formed in the internal space of the axial through hole. The air passage pipe is installed in the protective cannula in a nesting manner. Anairflow passage is arranged in the air passage pipe. The sucker is slidably installed on the air passage pipe. The sucker slides on the air passage pipe and can switch between two states including afolding state and an expanding state. In the folding state, the sucker is integrally located in the accommodation space. In the expanding state, the sucker stretches out from a hole opening at the distal end of the protective cannula to the space outside the accommodation space. By pulling a tumor through negative pressure, the tumor is prevented from being torn away or squeezed. The risk of localimplantation metastasis is avoided. By arranging a force-measuring structure, a doctor can easily master degree of operation degree. Operative complications caused by excessively pulling neurovascular structures connected with the tumor are avoided.

Description

technical field [0001] The invention relates to a clinical medical auxiliary device, in particular to a negative pressure tumor holder. Background technique [0002] Intraspinal tumors are a common disease in spinal surgery, and can be found in various parts of the cervical spine, thoracic spine, lumbar spine, and sacral spine. Tumors in the spinal canal are mostly expansive growths. Since the volume in the spinal canal is fixed, when the tumor grows to a certain extent, the important structures in the spinal canal, such as nerve roots and spinal cord, are severely compressed. Paraplegia occurs. According to literature statistics, the incidence of tumors in the spinal canal is about 10 / 100,000 people per year, accounting for about 15% of central nervous system tumors. Pathologically, tumors in the spinal canal can include schwannomas, meningiomas, neurofibromas, gliomas, hemangiomas, ependymomas, etc., most of which are schwannomas and meningiomas, accounting for about 65...

AI Technical Summary

Problems solved by technology

The surface of these tumors is a smooth tumor capsule. In addition, dripping water is required to cool down the temperature during the electrocoagulation operation, and the surface of the tumor is moist. The existing tumor clamping forceps often cannot generate enough friction with the tumor surface, and it is easy to loosen during the clamping process. off;

[0005] ②When using the existing tumor clamping forceps, if the assistant's clamping force is too large, it may break the tumor capsule, resulting in potential local tumor implantation, and at the same time increase the difficulty of complete surgical resection; excessive traction force may cause surrounding The tissue is stretched, causing nerve damage, leading to serious complications such as quadriplegia and loss of bowel and bladder function;

[0006] ③The existing fine-needle-with-thread traction technique needs to destroy the surface integrity of the tumor, which has the risk of tearing, and is only suitable for tougher tumors

Images