Visual positioning device of brain stereotactic instrumentTechnical Field
The application belongs to the technical field of medical auxiliary instruments, and particularly relates to a visual positioning device of a brain stereotactic instrument.
Background
The brain stereotactic operation is different from the conventional craniotomy operation mode, and is characterized by minimally invasive and accurate, and the main application fields are dyskinesia, epilepsy, pain, brain tissue biopsy, cerebral hemorrhage and the like. To perform stereotactic surgery, most commonly a stereotactic head frame, the coordinates of the target point can be set to reach the nucleus or the position of the brain very accurately, which is very helpful for the neurosurgery to treat diseases very accurately.
The brain stereotactic operation is the biggest difference with the common craniotomy in that craniotomy is not needed, is used for accurately positioning focus targets in the brain, has the accuracy within 1mm, and can be matched with image equipment such as CT, MRI and the like. During operation, the frame of the orientation instrument is fixed on the head of a patient, then the patient is scanned in a CT room, a coordinate system is established through CT images, three-dimensional coordinate data of a target point in the brain is calculated, and surgical instruments are installed in an operating room for operation.
Chinese patent document CN219331968U discloses a brain stereotactic apparatus in which a probe is used for localization. However, there is also visual positioning in the prior art, that is, a visual camera is used to capture a positioning ball to achieve visual positioning. However, the positioning ball is currently fixed by a doctor through nailing positioning screws on the skull (usually 3-10 positioning screws are needed to finish positioning), which causes damage to the skull of the patient and causes inconvenient use.
Disclosure of utility model
The utility model aims to solve the technical problems that: in order to solve the defects in the prior art, the visual positioning device of the brain stereotactic instrument, which is convenient to use and can be used for positioning a probe and visual positioning, is provided.
The technical scheme adopted for solving the technical problems is as follows:
a brain stereotactic machine vision positioning device comprising:
a base assembly including a bottom frame;
The bracket is arranged on the base assembly and used for supporting the base assembly;
The visual positioning rod is detachably inserted on the base assembly and comprises a vertical rod and a plurality of positioning balls arranged on the vertical rod.
Preferably, the vertical projection of the base assembly of the visual positioning device of the brain stereotactic instrument is a corner cut rectangle or a round corner rectangle.
Preferably, the brain stereotactic instrument vision positioning device of the utility model has a plurality of vision positioning rods.
Preferably, in the visual positioning device of the brain stereotactic instrument, the number of the visual positioning rods is 4, and the 4 visual positioning rods are respectively positioned at four corners of the base assembly.
Preferably, in the visual positioning device for the brain stereotactic instrument, the number of the positioning balls on each visual positioning rod is several, and the heights of the positioning balls and the projection positions on the horizontal plane are different.
Preferably, the visual positioning device of the brain stereotactic instrument is characterized in that the bottom frame is formed by mutually splicing four sides.
Preferably, the brain stereotactic apparatus vision positioning device of the present utility model, said support comprises a support body with a long strip hole in the middle, and a screw arranged in the long strip hole for fixing the support body to the base assembly. The height of the base assembly can be adjusted by the position of the screw in the strip hole.
Preferably, in the visual positioning device of the brain stereotactic apparatus of the present utility model, said support is arranged at four corners of said base assembly.
Preferably, in the visual positioning device of the brain stereotactic instrument, the bottom frame is provided with a groove, and the bracket is clamped in the groove.
Preferably, the cross section of the groove of the visual positioning device of the brain stereotactic instrument is trapezoid.
The beneficial effects of the utility model are as follows:
According to the visual positioning device of the brain stereotactic instrument, the base component and the support are part structures of the brain directional head frame, the base component and the support are firstly installed on the head of a patient, after CT positioning is completed based on the brain stereotactic instrument, the visual positioning rod is installed on the base component, and the position of the positioning ball is scanned through the mechanical visual positioning device, so that visual position positioning is completed, and a target point is found. The coordinate system of the visual positioning device is overlapped with the CT image coordinate system of the brain stereotactic instrument, and can share one set of coordinate system to realize data sharing. Because the device is directly combined with the brain directional head frame, the device is more convenient to use, and can avoid extra operation wound to the patient.
Drawings
The technical scheme of the application is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a schematic diagram of a visual positioning device of a brain stereotactic apparatus according to an embodiment of the present application;
FIG. 2 is a schematic view of a visual positioning rod according to an embodiment of the present application;
FIG. 3 is a bottom view of a visual positioning device of a brain stereotactic apparatus according to an embodiment of the present application;
FIG. 4 is a schematic view of a visual positioning device of a brain stereotactic apparatus with a visual positioning rod removed according to an embodiment of the present application;
the reference numerals in the figures are:
1. A base assembly;
2. A bracket;
3. A visual positioning rod;
11. a bottom frame;
21. A bracket body;
22. A screw;
31. A vertical rod;
32. and (5) positioning a ball.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
The technical scheme of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments.
Examples
The present embodiment provides a brain stereotactic apparatus vision positioning device, as shown in fig. 1, comprising:
The base assembly 1, the base assembly 1 comprises a bottom frame 11, the middle of the bottom frame 11 is hollow, and the base assembly 1 of the brain stereotactic instrument is shared;
a bracket 2, wherein the bracket 2 is arranged on the base assembly 1 and is used for supporting the base assembly 1;
the visual positioning rod 3, the visual positioning rod 3 is detachably inserted on the base assembly 1, and the visual positioning rod 3 comprises a vertical rod 31 and a plurality of positioning balls 32 (optical visual identification markers) arranged on the vertical rod 31.
In the visual positioning device of the brain stereotactic instrument of the embodiment, the base component 1 and the support 2 are part structures of the brain orientation head frame, the base component 1 and the support 2 are firstly installed on the head of a patient, after CT positioning is completed based on the brain stereotactic instrument, the visual positioning rod 3 is installed on the base component 1, and the position of the positioning ball 32 is scanned by the mechanical visual positioning device to complete the visual position positioning to find a target point (the visual position positioning technology is the prior art, the application does not need to perform visual position positioning, and the principle is not repeated here), the coordinate system of the visual positioning device is overlapped with the CT image coordinate system of the brain stereotactic instrument, and the coordinate system can be shared to realize data sharing. Because the device is directly combined with the brain directional head frame, the device is more convenient to use, and can avoid extra operation wound to the patient.
It should be noted that the brain orientation headstock structure can be seen in CN219331968U, and the support assembly, the arc-shaped frame and the probe are mounted to the base assembly 1.
Further, the vertical projection of the base assembly 1 is a corner cut rectangle or a rounded rectangle.
Further, the number of the visual positioning rods 3 is 4 as shown in fig. 1, and the 4 visual positioning rods 3 are respectively positioned at four corners of the base assembly 1.
Further, the number of the positioning balls 32 on each visual positioning rod 3 is 4, and the heights of the 4 positioning balls 32 and the projection positions on the horizontal plane are different.
Further, the bottom frame 11 is formed by mutually splicing four sides.
Further, the bracket 2 includes a bracket body 21 having an elongated hole in the middle, and a screw 22 provided in the elongated hole for fixing the bracket body 21 to the base assembly 1. The height of the base assembly 1 can be adjusted by the position of the screws 22 in the elongated holes.
Further, the brackets 2 are arranged at four corners of the base assembly 1, namely, 4 brackets 2 are provided, so that better stabilization can be provided.
Further, a groove is formed in the bottom frame 11, and the bracket 2 is clamped in the groove. The four sides of the bottom frame 11 are provided with scale marks.
Further, the cross section of the groove is trapezoid.
With the above-described preferred embodiments according to the present application as a teaching, the worker skilled in the art could make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of claims.