a puncture dilator

Abstract

The invention discloses a puncture dilator, which comprises a puncture part and an expansion part, the puncture part is arranged under the expansion part, and the puncture part can be expanded through the expansion part. Wherein, the puncture part includes a bracket and a steel wire, and the steel wire passes through the bracket along the axial direction of the bracket and is fixedly connected with the bottom of the bracket; The lower pressing plate is fixedly connected with the bracket, the pulley and the spring lock piece are fixedly connected with the bracket, and the expanding part presses the pulley to move radially along the lower pressing plate through the lower pressing plate, and drives the locking foot to expand radially along the lower pressing plate to realize the expansion of the bracket. The present invention provides a tool that cooperates with neuronavigation, intraoperative ultrasound and endoscopy to quickly and accurately confirm the lesion and perform puncture and catheterization. It also has the function of one-time expansion of transparent stent tubes or pre-installed expandable tearing sheaths. Avoid secondary expansion and placement of the sheath, and reduce the damage to the normal brain tissue of the patient during the operation.

Description

technical field [0001] The invention relates to the field of medical equipment supplies, in particular to a puncture dilator. Background technique [0002] At present, the surgical methods used in neurosurgery are usually: find the lesion under the guidance of the neuronavigation system, open the brain tissue or remove the lesion under the direct observation of the endoscope in the channel. For the space-occupying lesions of deep brain tumors, it is necessary to incise the cortex and subcortical brain tissue to reach the deep lesions. During the process of endoscopic brain tissue incision, the whole process of non-visual operation often requires repeated stretching of normal brain tissue. It is easy to cause damage to brain tissue and adjacent blood vessels or nerves, and the formation of hematoma. In case of vascular malformation, it will cause acute emergencies such as intracranial hemorrhage, which may cause serious neurological deficits, cognitive impairment and other co...

AI Technical Summary

Problems solved by technology

For space-occupying lesions of deep brain tumors, the cortex and subcortical brain tissue must be incised to reach the deep lesion. In the process of endoscopic brain tissue incision, the whole process of non-visual operation often requires repeated stretching of normal brain tissue. , expansion, easy to cause damage to brain tissue and adjacent blood vessels or nerves, and hematoma formation. In case of vascular malformation, it will cause acute emergencies such as intracranial hemorrhage, which may cause serious neurological deficits, cognitive impairment and other complications. The puncture process The operation is completely based on the personal experience of expert doctors, and channel establishment deviation, channel instability, and even accidental injury to surrounding normal brain tissue and blood vessels may occur

Open surgery needs to pull the brain tissue to expose the lesion, and the whole operation process will cause a large degree of iatrogenic damage to the brain tissue

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