CN105617525A - Symmetric tree-shaped model for evenly implanting medical radioactive seeds - Google Patents

Abstract

The invention discloses a symmetric tree-shaped model for evenly implanting medical radioactive seeds. The symmetric tree-shaped model comprises a tumor body model; a plurality of slices are arranged in the tumor body model; a main puncture canal, four secondary puncture canals and seven radioactive seed implantation points are arranged in each slice; connecting lines of six of the seven radioactive seed implantation points in each slice form a regular hexagon; the seventh radioactive seed implantation points are located at the centers of the regular hexagons; the main puncture canals of all the slices are superposed. As the technical solution is adopted by the symmetric tree-shaped model disclosed by the invention, according to a radiation radius of each radioactive seed, volume of a tumor and an even distribution law of seed implantation, firstly, the tumor is divided into several slices, a simple, practical and operable three-dimensional mathematical geometrical model is established in each slice, and a relationship among distance between every two seeds, the connecting lines and the main puncture canals is found out, and therefore the goal that even implantation is finished by puncturing the tumor once is achieved.

Description

A kind of symmetrical tree shaped model of medical radioactive uniform particle planting

Technical field

The present invention relates to medical instruments field, specifically, relate to the symmetrical tree shaped model of a kind of medical radioactive uniform particle planting.

Background technology

Malignant tumor is one of topmost cause of death of mankind nowadays, and the patient of nearly 80% tumor when making a definite diagnosis has belonged to late period, loses opportunity of operation. Novel radioactive nucleic in recent years¹²⁵I particle is succeeded in developing, the progress of the Imaging Technologies such as ultrasonic, CT and magnetic resonance, makes radioactive particle close-range treatment tumor obtain swift and violent development, becomes the popular radiotherapy technology for the treatment of tumor. At present, domestic carry out¹²⁵The medical institutions of I seeds implanted treatment technology are not within minority, method for implantation is of all kinds, but mostly lack the strict equal control method of cloth, mainly adopt method tumor body is repeatedly punctured implantation, unobstructed pathological changes adopt template implant, penetrate a few row's puncture needle, the incidence rate of this misery adding patient undoubtedly and complication simultaneously; But, there is the pathological changes that peripheral organs is blocked cannot use template, in tumor body, particle cannot realize uniform planting,, there is cold spot and focus, affects therapeutic effect in particle skewness, puncture time is many, the number of times of puncture needle turnover pleura has direct relation with pneumothorax and hemothorax, and complication is more, and in tumor, long-term treatment effects is not good enough.

Summary of the invention

The technical problem to be solved in the present invention is to overcome drawbacks described above, the symmetrical tree shaped model of a kind of medical radioactive uniform particle planting is provided, this model can be set up a main puncture path by main puncture needle is disposable, under the cooperation that secondary 120 �� of break-ins of puncture needle puncture, in tumor body, uniformly place radioactive particle.

For solving the problems referred to above, the technical solution adopted in the present invention is:

A kind of symmetrical tree shaped model of medical radioactive uniform particle planting, including tumor body Model, in described tumor body Model, some lamellas are set, it is characterized in that: in each lamella, be provided with a main puncture path, four secondary puncture paths and seven radioactive prospecting instrument points, the line of six of which radioactive prospecting instrument point is regular hexagon, 7th radioactive prospecting instrument point is positioned at regular hexagon center, and the main puncture path of all lamellas overlaps.

Improve as one:

The quantity of described lamella is 3 lamellas, and the angle of adjacent sheets is 60 ��.

As further improvement:

Described main puncture path is through an orthohexagonal diagonal, and the angle of secondary puncture path and main puncture path is 120 ��

Owing to have employed technique scheme, the present invention is uniformly distributed rule according to the radiation radius of radioactive particle, the volume of tumor and seeds implanted, first tumor is divided into several lamella, in lamella, set up 3-d mathematics geometric model simple, practical, operability, find out the relation of the distance between particle, line and main puncture path. It is achieved that a pin of tumor has punctured the purpose of uniform planting. Implanting radioactive particle by isometric symmetric form tree shaped model, directly perceived, accurate, workable, particle planting is uniform, and without cold spot, focus, therapeutic effect significantly improves, and patients ' life quality significantly improves, and life span is obviously prolonged.

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Accompanying drawing explanation

Accompanying drawing 1 is the symmetrical tree shaped model first time secondary structural representation punctured of the present invention a kind of medical radioactive uniform particle planting;

Accompanying drawing 2 is the secondary structural representation punctured of symmetrical tree shaped model second time of the present invention a kind of medical radioactive uniform particle planting;

Accompanying drawing 3 is the upward view of accompanying drawing 1.

In figure: the main puncture needle of 1-; 2-graduation indication dish; 3-pair puncture needle; 4-tumor body; The main puncture path of 5-; 6-radioactive prospecting instrument point; 7-puncture path; 8-lamella.

Detailed description of the invention

Embodiment: such as Fig. 1 and Fig. 2, a kind of symmetrical tree shaped model of medical radioactive uniform particle planting, including tumor body Model 4, some lamellas 8 are set in described tumor body Model 4,5, four secondary puncture paths 7 of a main puncture path and seven radioactive prospecting instrument points 6 it are provided with in each lamella 8, the line of six of which radioactive prospecting instrument point 6 is regular hexagon, and the 7th radioactive prospecting instrument point 6 is positioned at orthohexagonal center, and the main puncture path 5 of all lamellas 8 overlaps.

As it is shown on figure 3, the quantity of described lamella 8 is 3 lamellas, the angle of adjacent sheets 8 is 60 ��.

Described main puncture path 5 is through an orthohexagonal diagonal, and the angle of secondary puncture path 7 and main puncture path 5 is 120 ��

The maximum gauge selecting tumor is main puncture path 5, using main puncture path as trunk, the lateral secondary puncture path punctured is branch, and branch separates from trunk with hexagonal angle symmetric equal-length, the distance of bifurcated is branch length again, so forms the symmetrical tree shaped model that a kind of branch is isometric in a lamella.

During placement, main puncture needle 1 enters in tumor body 4 by main puncture path 5, and secondary puncture needle 3 is passed by secondary puncture path 7, is indicated the anglec of rotation of main puncture needle 1 by graduation indication dish 2, just can implant radioactive particle in the same way in different lamellas 8.

On trunk, three bifurcations and the line on each summit of branch, form line six equilateral triangles of formation of a regular hexagon, each point and central point, and the distance between each point is equal. On radioactive prospecting instrument to each aspect, then, the distance between each particle is exactly equal, and particle distribution in this lamella 8 is exactly uniform. With main puncture path for axis, rotate 60 �� of another lamellas 8 of uniform planting, then rotate one lamella 8 of 60 �� of uniform plantings, by three uniform planting lamellas of 60 �� of being separated by, be formed for the uniform planting of a spheroid, form a tree-shaped distributed model of three-dimensional symmetry. During seeds implantation tumor, the diameter of three-dimensional digital surgical navigational optimized choice tumor it is main puncture path, again through break-in puncture needle according to the uniform planting radioactive particle of the tree-shaped distributed model of cubic symmetry.

Claims (3)

1. the symmetrical tree shaped model of a medical radioactive uniform particle planting, including tumor body Model (4), in described tumor body Model (4), some lamellas (8) are set, it is characterized in that: in each lamella (8), be provided with a main puncture path (5), four secondary puncture paths (7) and seven radioactive prospecting instrument point (6), the line of six of which radioactive prospecting instrument point (6) is regular hexagon, 7th radioactive prospecting instrument point (6) is positioned at regular hexagon center, and the main puncture path (5) of all lamellas (8) overlaps.

2. symmetrical tree shaped model according to claim 1, it is characterised in that: the quantity of described lamella (8) is 3 lamellas, and the angle of adjacent sheets (8) is 60 ��.

3. symmetrical tree shaped model according to claim 1 and 2, it is characterised in that: described main puncture path (5) is through an orthohexagonal diagonal, and the angle of secondary puncture path (7) and main puncture path (5) is 120 ��.