CN2528401Y

CN2528401Y - Stereo location rest for determining skull puncture point

Info

Publication number: CN2528401Y
Application number: CN01269950U
Authority: CN
Inventors: 李娜; 于兰; 张遇; 穆雪梅; 郝志; 赵新春
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-31
Filing date: 2001-12-31
Publication date: 2003-01-01
Anticipated expiration: 2011-12-31

Abstract

The utility model provides a stereo positioning rest for determining skull puncture point. The stereo positioning rest for determining skull puncture point is adapted to use for cerebral hemorrhage puncture aspiration drainage. Two side ends of a crossfoot are vertically connected with side rulers. Sling dogs for mounting with the ear are provided inside of the side rulers. Transversal sledges and vertical staffs are glidingly supported by the sledges and are provided outside of the side rulers. When the spatial data of the center of the blood tumor is detected by CT scanning, directly and accurately, the point of puncture is lined out on the skull surface and the puncture depth is determined through the stereo positioning rest. The error is not more than 5mm. The cerebral hemorrhage puncture aspiration drainage is guided accurately. The accurate guiding raises the rate of success. The utility model has the advantages of simple structure, accurate localization, easy operation and low cost.

Description

Determine the stereotaxic frame of head point of puncture

Technical field

This utility model belongs to medical apparatus and instruments, particularly relates to a kind of stereotaxic frame that is mainly used in the definite head point of puncture in the hypertensive cerebral basal ganglia region cerebral hemorrhage puncture drainage.

Background technology

Hypertensive cerebral hemorrhage is sent out in basal ganglia region well, the serious threat human health, and sickness rate, mortality rate and disability rate are quite high.The internal medicine conservative treatment mortality rate is up to 46.7%, and operation of opening cranium cerebral tissue wound is big, and edema is serious, and mortality rate is up to 38～50%.Along with popularizing of CT technology, people actively seek curative effect height, new method that wound is little.Backland in 1978 proposes stereotaxis first and removes intracranial hematoma, and its mortality rate reduces to 13%.Yet operation success or failure key is accurate localised puncture point and puncture direction.In recent years, domestic scholars is carried out CT guiding stereotaxis puncture drainage, CT sheet commonly used is measured the puncture positioning mode: mark after patient has one's hair cut and lose the shape center line,-2-orbitomeatal line (OM line), determine the distance of the CT aspect of hematoma maximum apart from the OM line, be in patient's cranium surface through this and mark aspect line with the OM line parallel, measuring the forehead scalp through this aspect (measures with square to the vertical dimension at hematoma center, square measure an arm must with lose line parallel in the shape), calculate cms by the CT scale, on chi, measure the back and be point of puncture with aspect line intersection point, vertical dimension from the point of puncture scalp to the hematoma center, the cms of calculating by the CT scale is the length that should select puncture needle for use.Because the OM line on the CT sheet is nonstandard, very big through repeatedly calculating the point of puncture error that marks, the puncture direction can depart from the hematoma center greatly, and the major injury cerebral tissue increases amount of bleeding, causes operative failure.

A kind of stereotactic apparatus carries out puncture point orientation, and its accurate positioning is higher, but it is very high to CT machine performance requirement, and that promptly focus is scanned is 0.1mm at interval, otherwise three-dimensional imaging is unclear, directly influence anchor point accurately and surgical effect.Also have complicated operation, the time is long, and therefore the patient has accepted a large amount of radiation exposures, might incur loss through delay critical patient's rescue and price height, is difficult for deficiencies such as generally use.

Summary of the invention

This utility model is for solving the technical problem of the definite head point of puncture accuracy that exists in the above-mentioned known technology, and proposes the stereotaxic frame of accurate, easy and simple to handle, the cheap definite head point of puncture of a kind of measurement and positioning.

This utility model is that the technical scheme that the technical problem that exists in the above-mentioned known technology of solution is taked is: the two side ends of crossfoot vertically is connected with the side chi, each side chi inboard is provided with the suspension hook that is mounted on ear, each side chi outside is provided with the perpendicular chi of horizontal balladeur train and this balladeur train sliding support, and side chi and perpendicular chi two chi limits are perpendicular.

This utility model is also taked following technical measures:

Described crossfoot is connected by hinge with the side chi.

Described crossfoot, its base Along ent is provided with the nasal bone recess.

The suspension hook of described each side chi inboard is the pliability suspension hook, and the position symmetry.

Advantage of the present utility model and beneficial effect are: the crossfoot of this locating rack, side chi and perpendicular chi are respectively the localized X of 3 D stereo, Y, Z axle, measure the three-dimensional data at hematoma center by CT machine scanning, can make things convenient for, accurately, show by this stereotaxic frame intuitively and mark hematoma puncture point and paracentesis depth on the head surface.Have simple in structure, accurate positioning, easy and simple to handle, cheap outstanding advantage.

Description of drawings

Accompanying drawing 1 this utility model structural representation.

Drawing reference numeral: 1 crossfoot, 2 nasal bone recesses, 3 hinges, 4 side chis, 5 balladeur trains, 6 perpendicular chis, 7 suspension hooks.

The specific embodiment

Below by embodiment shown in the drawings this utility model is described.As shown in Figure 1, the two side ends of crossfoot 1 vertically is connected with the side chi 4 that is positioned at its both sides by hinge 3, and crossfoot base Along ent is provided with nasal bone recess 2.Each side chi inboard is arranged with the pliability suspension hook 7 that is mounted on ear, and each side chi outside is provided with the perpendicular chi 6 of horizontal balladeur train 5 and this balladeur train sliding support, and side chi and perpendicular chi two chi limits are perpendicular.

Each chi of present embodiment and the material of balladeur train are lucites.Suspension hook adopts rubber-plastics material.This utility model basic operation method is: earlier locating rack is worn on patient's head, headstock side chi upper limb parallels with the trivial fixed OM datum line (orbitomeatal line) of CT machine, and the CT transverse section is scanned from the OM datum line, and this aspect is the OM aspect.On the OM aspect, both sides external auditory meatus line is an X-axis, center, front and back line is a Y-axis, a little be the O point if two lines intersect vertically, CT scan is parallel to the OM plane, and every interval 1cm is upwards scanning successively, the vertical height that rises is the Z axle, the Z axle is crossed the O point perpendicular to the OM plane, intersects at a point by the numerical value on three coordinate axess, can determine a point on head.It is static that head keeps when CT scan, so each aspect X, Y-axis position are identical.When scanning hematoma center aspect, this aspect is the coordinate figure of Z axle apart from the planar vertical height of OM, accurately measure the coordinate figure of pathological changes center on X, Y-axis by the CT machine, go out the coordinate figure of Y-axis by the side footage number, move perpendicular chi to this numerical value, the point that two coordinate figures of perpendicular chi and side chi intersect can be decided to be the point of puncture of pathological changes on scalp.Get crossfoot at the coordinate figure of X-axis as paracentesis depth, on point of puncture along the direction puncture parallel with X-axis.Use this locating rack that 50 routine hypertensive cerebral basal ganglia region patients with cerebral hemorrhage are carried out puncture drainage.Postoperative carries out tracing observation with CT examination to site of puncture, direction and hematoma clearance rate, and the result compares with matched group, and the clearance rate of hematoma obviously improves, and P＜0.01 has significant difference.The accuracy of puncture compares, and error＜5mm has improved the success rate of operation, and mortality rate reduces to 9% by statistics.This technology has reached desired technical specification of stereotactic apparatus and effect thereof, has accurately determined hematoma puncture position, direction and the degree of depth, has accelerated the absorption of hematoma time, has alleviated cerebral edema, has reduced mortality in said patients and disability rate.This stereotaxic frame design science, reasonable, standard, this headstock structural design novelty, uniqueness, it is comparable still not have like product at home.Simple to operate, easy row, low price.Overcome stereotactic apparatus cost costliness, to the high shortcoming of CT machine performance requirement, reduced time and financial burden that the patient is subjected to radiation exposure, had feasibility, practicality, obtained higher society and economic benefit.This technology also is applicable to the hematoma drainage of intracranial different parts, is convenient to promote the use of.

Claims

1, determine the stereotaxic frame of head point of puncture, formed by gage, it is characterized in that: the two side ends of crossfoot vertically is connected with the side chi, each side chi inboard is provided with the suspension hook that is mounted on ear, each side chi outside is provided with the perpendicular chi of horizontal balladeur train and this balladeur train sliding support, and side chi and perpendicular chi two chi limits are perpendicular.

2, stereotaxic frame according to claim 1 is characterized in that: described crossfoot is connected by hinge with the side chi.

3, stereotaxic frame according to claim 1 is characterized in that: described crossfoot, its base Along ent is provided with the nasal bone recess.

4, stereotaxic frame according to claim 1 is characterized in that: the suspension hook of described each side chi inboard is the pliability suspension hook, and the position symmetry.