A kind of symmetrical tree shaped model of medical radioactive uniform particle plantingTechnical field
The present invention relates to medical instruments fields, specifically, being related to a kind of the symmetrical of medical radioactive uniform particle plantingTree shaped model.
Background technique
Malignant tumour is one of most important cause of death of mankind nowadays, and tumour has been when making a definite diagnosis by nearly 80% patientBelong to advanced stage, loses opportunity of operation.Novel radioactive nucleic in recent years125I particle is succeeded in developing, the images such as ultrasound, CT and magnetic resonanceThe progress of technology makes radioactive particle close-range treatment tumour obtain swift and violent development, becomes the popular radiotherapy for the treatment of tumourTechnology.Currently, domestic carry out125The medical institutions of I seeds implanted treatment technology are not within minority, and method for implantation is all kinds of, but bigLack the equal control method of stringent cloth more, it is main using to carry out the method for repeatedly puncturing implantation to knurl, in unobstructed lesionIt is upper to be implanted into using template, while a few row's puncture needles are penetrated, this undoubtedly increases the pain of patient and the incidence of complication；SoAnd the lesion for having peripheral organs to block is not available template, particle cannot achieve uniform planting in knurl, and particle distribution is unevenIt is even, there is cold spot and hot spot, influence therapeutic effect, puncture time is more, and puncture needle passes in and out the number and pneumothorax and hemothorax of pleuraThere is direct relation, complication is more, and in tumour, long-term treatment effects are not good enough.
Summary of the invention
The technical problem to be solved by the present invention is to overcome drawbacks described above, a kind of medical radioactive uniform particle planting is providedSymmetrical tree shaped model, the model can disposably be established a main puncture path by main puncture needle, be worn in the 120 ° of deflectings of secondary puncture needleUnder the cooperation of thorn, radioactive particle is uniformly placed in knurl.
To solve the above problems, the technical scheme adopted by the invention is that:
A kind of symmetrical tree shaped model of medical radioactive uniform particle planting, including knurl model, in the knurl modelSeveral lamellas are set, it is characterised in that: a main puncture path, four secondary puncture paths and seven radioactivity grains are equipped in each lamellaSon implantation point, the line of six of them radioactive prospecting instrument point is regular hexagon, and the 7th radioactive prospecting instrument point is located atThe main puncture path at regular hexagon center, all lamellas is overlapped.
As an improvement:
The quantity of the lamella is 3 lamellas, and the angle of adjacent sheets is 60 °.
As a further improvement:
The main puncture path passes through a diagonal line of regular hexagon, and the angle of secondary puncture path and main puncture path is 120 °
By adopting the above-described technical solution, the present invention is according to the radiation radius of radioactive particle, the volume and grain of tumourSon implantation is uniformly distributed rule, and tumour is first divided into several lamellas, simple, practical, operability three are established in lamellaDimension geometrical model finds out the relationship of the distance between particle, line and main puncture path.It is achieved that a pin puncture of tumourComplete the purpose of uniform planting.By isometric symmetric form tree shaped model implantation radiation particle, intuitive, accurate, strong operability, grainSub- planting is uniform, and no cold spot, hot spot, therapeutic effect significantly improve, and patients ' life quality significantly improves, and life span is obviously prolongedIt is long.
The present invention will be further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Attached drawing 1 is a kind of symmetrical tree shaped model of medical radioactive uniform particle planting of the present invention secondary knot punctured for the first timeStructure schematic diagram；
Attached drawing 2 is a kind of second of secondary knot punctured of symmetrical tree shaped model of medical radioactive uniform particle planting of the present inventionStructure schematic diagram；
Attached drawing 3 is the bottom view of attached drawing 1.
In figure: the main puncture needle of 1-；2- graduation indication disk；3- pair puncture needle；4- knurl；The main puncture path of 5-；6- radioactivity grainSon implantation point；7- puncture path；8- lamella.
Specific embodiment
Embodiment: such as Fig. 1 and Fig. 2, a kind of symmetrical tree shaped model of medical radioactive uniform particle planting, including knurl mouldType 4, the interior several lamellas 8 of setting of the knurl model 4, each lamella 8 is interior to be equipped with 5, four 7 and of secondary puncture path of a main puncture pathThe line of seven radioactive prospecting instrument points 6, six of them radioactive prospecting instrument point 6 is regular hexagon, the 7th radioactivitySeeds implanted point 6 is located at the center of regular hexagon, and the main puncture path 5 of all lamellas 8 is overlapped.
As shown in figure 3, the quantity of the lamella 8 is 3 lamellas, the angle of adjacent sheets 8 is 60 °.
The main puncture path 5 passes through a diagonal line of regular hexagon, and the angle of secondary puncture path 7 and main puncture path 5 is120°
Select the maximum gauge of tumour for main puncture path 5, using main puncture path as trunk, the secondary puncture path laterally punctured isBranch, branch are separated from trunk with hexagonal angle symmetric equal-length, and the distance of bifurcated is branch length again, in this way in a lamellaForm a kind of isometric symmetrical tree shaped model of branch.
When placement, main puncture needle 1 is entered in knurl 4 by main puncture path 5, and secondary puncture needle 3 passes through secondary puncture path 7 and is pierced by,The rotation angle of main puncture needle 1 is indicated by graduation indication disk 2, can in different lamellas 8 implantation radiation in the same wayProperty particle.
The line of three bifurcations and each vertex of branch on trunk, forms a regular hexagon, the company of each point and central pointLine forms six equilateral triangles, and the distance between each point is equal.On radioactive prospecting instrument to each point, then,The distance between each particle be exactly it is equal, distribution of the particle in this lamella 8 is exactly uniform.In being with main puncture pathAxis rotates 60 ° of uniform another lamellas 8 of planting, then rotates 60 ° of uniform one lamellas 8 of planting, is separated by 60 ° uniform by threePlanting lamella just forms the uniform planting of a sphere, forms a three-dimensional symmetrical tree-shaped distributed model.Radioactive particle is plantedIt is main puncture path by the diameter of three-dimensional digital surgical navigational optimum choice tumour, then punctured by deflecting when entering to treat tumourNeedle is according to the uniform planting radioactive particle of the tree-shaped distributed model of cubic symmetry.