Skull fixing device and surgery tool thereof

Abstract

The invention provides a skull fixing device and a surgery tool thereof. The skull fixing device at least includes a lower fastening piece and a movable buckle assembly, and the lower fastening pieceis provided with a stud in which a first combination part is arranged; the movable buckle assembly at least comprises an upper fastening piece and a nut, a sleeving part in which a first pivot part isarranged is arranged on the upper fastening piece, the nut can be matched with the stud through threads, a first positioning part is arranged at the upper end of the nut, and a second pivot part matched with the first pivot part is arranged on the outer surface of the nut. The surgery tool at least comprises an outer sleeve and an inner guiding rod, a second positioning part combined with the first positioning part of the nut is arranged at the lower end of the outer sleeve, and a second combination part combined with the first combination part of the stud is arranged at the lower end of theinner guiding rod. In this way, a certain gap is reserved between the movable buckle assembly and the outer surface of a skull when the whole movable buckle assembly is positioned on the outer sleeve,convenience is provided for implanting the skull for reset, the skull can be implanted or taken out fast and effectively by only one hand, and clinical operation is pretty convenient and advanced.

Description

technical field [0001] The invention relates to a cranium fixation device and its operation tool, which can achieve simple, effective and rapid cranium fixation device and its operation tool regardless of implantation or removal in clinical operation. Background technique [0002] Take the cranium fixation device as an example, such as the Taiwan patent announcement I321463 "Cranial fixation device" patent antecedent, including a bushing, a through pipe, a flange at one end of the through pipe, and a base plate at the through pipe The other end of the bolt, and a hole in the bottom plate; a bolt, with a head, and a body extending from the head and passing through the hole in the bushing; and a nut, screwed on the The body of the bolt and is located in the through tube of the bushing. [0003] Although the aforementioned fixation device can achieve the functions of positioning the cranium and protecting the patient's head, and can be used repeatedly, the bushing, a bolt and ...

AI Technical Summary

Problems solved by technology

[0003] Although the aforementioned fixation device can achieve the functions of positioning the cranium and protecting the patient's head, and can be used repeatedly, the bushing, a bolt and a nut are separate independent components, which must be sequentially clamped by means of a clamping tool. Only when the bolts are implanted can the positioning be implanted, especially after the bolts are implanted, the clamping tool must be put down first, then the skull is reset, and then the bushing and nuts are implanted in sequence with the clamping tool, which makes the clinical implantation operation quite inconvenient. After the positioning of each component, the nut top must be clamped by cooperating with another rotary tool.

[0004] Only by turning the nut and the stud and moving down, and driving the bushing and the head of the bolt to generate clamping force, the skull is firmly fixed on the skull, causing the clamping components to be implanted. Positioning requires a clamping tool, and when the rotation is tight, another rotating tool must be used. No matter whether it is implanted or removed, two tools must be used. The cost is high and the clinical operation procedure is quite complicated and inconvenient.

[0005] In addition, the fixing device mainly uses multiple grooves on the top of the nut for the corresponding protrusions of the surgical tool to be locked, so as to rotate the nut and the stud and drive the bush to press down and clamp, but because the surgical tool only uses the lower end and the nut The corresponding concave-convex structure on the periphery of the top end is not firm enough to cause the surgical tool to drive the nut to rotate and often come off. Repeated positioning is necessary, and the operation is quite inconvenient.

[0006] Furthermore, after surgery on the head, hydrops are likely to form in the brain. If the interstitial fluid in the brain cannot be drained effectively and quickly, it is easy to cause excessive hydrops and brain pressure, swelling and compression. However, the above-mentioned fixation device has no drainage structure, causing doctors to It is necessary to drill a hole on the side for the drainage tube to be inserted into the drainage, which is quite inconvenient relative to the increase in surgical procedures

Images