CN201108500Y

CN201108500Y - Tridimensional orientation device with simple structure

Info

Publication number: CN201108500Y
Application number: CNU2007200549940U
Authority: CN
Inventors: 吕田明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-09-03
Anticipated expiration: 2017-08-01

Abstract

The utility model provides a stereotactic apparatus with simple structure and relates to a stereotactic apparatus capable of precisely sending the surgical devices to a target when a craniocerebral operation is performed to the human beings or the animals. The utility model includes a bottom tray which is made of high-strength rare earth engineering plastics and does not produce artifact interference in image scanning, a fixed screw with a guide hole, an arc-shaped Alpha angle measuring device with angle calibration scale, an arc-shaped Beta angle measuring device with angle calibration scale, a fastener with a pilot hole and capable of tension regulation, etc. The stereotactic apparatus is designed according to the straight line sorting principle, and compared with the prior art, has the advantages of simple structure, low cost and convenience in operation.

Description

A kind of stereotactic apparatus simple in structure

Technical field

This utility model relates to the stereotactic apparatus that operating theater instruments accurately can be fed through target spot when the human or animal carried out craniocerebral operations.

Background technology

Stereotactic apparatus is a kind of can positioning intracranial target under the cooperation of image location technology, then operating theater instruments such as microelectrode, puncture needle are accurately inserted specific target spot in the cranium brain, leaving and taking a kind of surgical unit of tissue specimen, damage target spot place's tissue or removal focus, is medical diagnosis on disease, treatment and zooperal common equipment.At present a kind of stereotactic apparatus of selling on the domestic and international market is based on the three-dimensional coordinate positioning principle, determine the corresponding X of target spot, Y, Z three-dimensional coordinate after, make operating theater instruments arrive ad-hoc location in the cranium brain.The localized stereotactic apparatus of this three-dimensional coordinate must attach a cover high-precision three-dimensional coordinate frame, and the size of this framework must can cover whole operative regions, therefore structure is complicated, huge, troublesome poeration, in addition, because the part production cost is directly related with accessory size, under the identical situation of precision, size is big more, and cost is high more, and therefore this stereotactic apparatus costs an arm and a leg.

The utility model content

The purpose of this utility model provides stereotactic apparatus a kind of simple in structure, easy to operate, with low cost.

The said stereotactic apparatus simple in structure of this utility model comprises: the fixed screw in hole is drawn with band in the interferential chassis of pseudo-shadow that can not produce when carrying out image scan with the manufacturing of high strength rare earth engineering plastics, the arc α angular surveying device that the angle index scale is arranged on it, the arc β angular surveying device that the angle index scale is arranged on it, with and on the securing member of the scalable degree of tightness of a bullport is arranged.Its two ends of said α angular surveying device are hinged respectively along the centrage on chassis and two limits on chassis, and it can left-right rotation.β angular surveying device is hinged with respect to one side that α angular surveying device rotates 90 degree its at least one ends of back and chassis, and it can be with respect to rotating before and after the α angular surveying device.Its centre of said fixed screw also has one to draw the hole, and this fixed screw is arranged at the middle part on chassis.Said securing member is sleeved on α angular surveying device and the β angular surveying device, in order to after α angular surveying device and β angular surveying device have been determined operation pathway so that α angular surveying device and β angular surveying device are fixed together.

What this stereotactic apparatus that this utility model provides adopted is the linear directional principle.Its using method is: at first hole on the skull at point of puncture place, then stereotactic apparatus is fixed on the skull by fixed screw, utilize the image location technology to the α angle of point of puncture then to target spot, β angle and distance position, by the graduated scale on α angular surveying device and the β angular surveying device, the angle of rotating α angular surveying device and β angular surveying device to the desired position to determine puncture path, then α angular surveying device and β angular surveying device are fixed by securing member, at last, by the hole of drawing on bullport on the securing member and the fixed screw operating theater instruments such as microelectrode or puncture needle are delivered to target spot according to distance parameter.

The utility model has the advantages that: 1, because stereotactic apparatus of the present utility model adopts is the linear directional principle, do not resemble the stereotactic apparatus that adopts the three-dimensional coordinate positioning principle and need to attach the framework that can cover whole operative regions, therefore, its volume just can be done lessly, thereby it is simple in structure, with low cost.2, easy to operate.It only needs to adjust two angles just can determine puncture path, then operating theater instruments is sent into specific range and gets final product.

Description of drawings

Fig. 1 is the structural representation of the said stereotactic apparatus simple in structure of this utility model;

Fig. 2 is the structural representation of stereotactic apparatus securing member;

Fig. 3 is the structural representation of stereotactic apparatus fixed screw.

The specific embodiment

With reference to Fig. 1.This utility model comprises: chassis 1, band draws the fixed screw 3 in hole 2, the arc α angular surveying device 4 that the angle index scale is arranged on it, the arc β angular surveying device 5 that the angle index scale is arranged on it, with and on securing member 7 that a bullport 6 arranged and the scalable degree of tightness, 1 centrage and two limits on chassis 1 are hinged respectively along the chassis at said α angular surveying device 4 its two ends, it can left-right rotation, β angular surveying device 5 is hinged with respect to one side that α angular surveying device rotates 90 degree its at least one ends of back and chassis 1, it can rotate with respect to α angular surveying device 4 front and back, said fixed screw 3 is arranged at the middle part on chassis 1, said securing member 7 is sleeved on α angular surveying device 4 and the β angular surveying device 5, in order to after α angular surveying device 4 and β angular surveying device 5 have been determined the operating theater instruments path so that α angular surveying device 4 and β angular surveying device 5 are fixed together.Said chassis 1 and fixed screw 3 usefulness high strength rare earth engineering plastics can not produce the material manufacture of pseudo-shadow when carrying out image scan, just can not produce interference like this when carrying out image scan.

With reference to Fig. 2.Said securing member 7 makes things convenient for its adjusting nut 8 can use wing nut for regulating degree of tightness.

With reference to Fig. 3.The fixed screw 3 that band draws hole 2 is preferably taper, convenient screw-in skull during with fixing stereotactic apparatus.

If the operation required precision is not high, can also be undertaken simple and easy fixing fast by pasting adhesive sticker between said chassis 1 and the head.But under the high situation of operation required precision, aforesaid way should not adopt.

With reference to Fig. 1.The one side that this utility model contacts with head on said chassis 1 can be provided with several locking pins 9, uses these locking pins 9 stereotactic apparatus can be fixed on the skull more firmly with fixed screw 3, to guarantee the high accuracy of operation.

Claims

1, a kind of stereotactic apparatus simple in structure, it is characterized in that: it comprises with the interferential chassis of pseudo-shadow that can not produce when carrying out image scan of high strength rare earth engineering plastics manufacturing draws the fixed screw in hole with band, the arc α angular surveying device that the angle index scale is arranged on it, the arc β angular surveying device that the angle index scale is arranged on it, with and on securing member that a bullport arranged and the scalable degree of tightness, its two ends of described α angular surveying device are hinged respectively along the centrage on chassis and two limits on chassis, β angular surveying device is hinged with respect to one side that α angular surveying device rotates 90 degree its at least one ends of back and chassis, its centre of described fixed screw also has one to draw the hole, this fixed screw is arranged at the middle part on chassis, and described securing member is sleeved on α angular surveying device and the β angular surveying device.

2, a kind of stereotactic apparatus simple in structure according to claim 1, it is characterized in that: the one side that described chassis contacts with head can be provided with several locking pins.