CN209729528U - A kind of sealed radioactive source - Google Patents

Abstract

The utility model discloses a kind of sealed radioactive sources, the sealed radioactive source is used for the implanted treatment of tumour, the sealed radioactive source includes round tube shell, the round tube interior of shell is provided with clava, the claval outer surface is attached with radionuclide, the both ends of the round tube shell are semicircular body, and the bottom surface of the semicircular body is identical as the radial cross-sectional shape of the round tube shell and size, and two semicircular bodies and the round tube shell constitute sealing shell.The utility model solves the problems, such as the sealed radioactive source welding end caused card rifle slightly thicker than circular tube shaped outer tube diameter that both ends are semicircular body.

Description

A kind of sealed radioactive source

Technical field

The utility model relates to the field of medical instrument technology, more particularly to a kind of sealed radioactive source.

Background technique

Sealed radioactive source Implantation in Treating or plesioradiotherapy are the oncotherapies to grow up the nearly more than ten years New technology, be that the radionuclide of sealed radioactive source source core is utilized around sealed radioactive source implantation tumour or tumour to release Ray kill cancer cell, achieve the purpose that treatment and alleviate disease.Its treatment for being mainly adapted to various entity tumors, as before Column gland cancer, breast cancer, liver cancer, brain tumor and oophoroma etc. achieve good therapeutic effect, and Small side effects, recurrence rate is low, patient It is not required to be hospitalized.This treatment technology is introduced from foreign countries at the beginning of 90, excellent by its by the popularization and clinical application of last decade Therapeutic effect more, has obtained the approval of domestic clinician and patient, and the market demand flourishes.Currently, making both at home and abroad The sealed radioactive source for tumor implantation therapy made is put using the sealing of electron beam, argon arc welding machine or laser welding technology sealing The both ends of the circular tube shaped tube body in source are penetrated, both ends are semicircular body, and the wall thickness of the both ends semicircular body of such circular tube shaped tube body is about justified 5~10 times of tubulose tube body wall thickness, the radionuclide as used in the sealed radioactive source for tumor implantation therapy is low energy Gamma-rays, therefore, existing plug sealing technology cause the dosage of sealed radioactive source to be unevenly distributed, to influence treatment effect Fruit.Meanwhile both ends are slightly thicker than circular tube shaped outer tube diameter for the sealed radioactive source ordinary circumstance welding end of semicircular body, are implanted into when to tumour When sometimes occur " card rifle " phenomenon, and be implanted into when be not easily accessible in tumor tissues, it is inconvenient to use.

Utility model content

The purpose of the utility model is to provide a kind of sealed radioactive sources, are welded using solving both ends as the sealed radioactive source of semicircular body End caused card rifle problem slightly thicker than circular tube shaped outer tube diameter.

To achieve the above object, the utility model provides a kind of sealed radioactive source, and the sealed radioactive source is used for tumour Implanted treatment, the sealed radioactive source includes round tube shell, and the round tube interior of shell is provided with clava, the clava Outer surface be attached with radionuclide, the both ends of the round tube shell are semicircular body, the bottom surface of the semicircular body and the circle The radial cross-sectional shape of pipe shell is identical with size, and two semicircular bodies and the round tube shell constitute sealing shell.

Optionally, the outer diameter of the round tube shell is 0.55-0.65mm, length 4-5mm.

Optionally, the outer diameter of the round tube shell is 0.6mm, length 4.5mm.

Optionally, the inner wall spaced set of the clava and the round tube shell.

Optionally, the claval outer diameter is 0.25-0.35mm, length 2.5-3.5mm.

Optionally, the claval outer diameter is 0.3mm, length 3.0mm.

Optionally, the radionuclide is iodine-125.

According to specific embodiment provided by the utility model, the utility model discloses following technical effects: this is practical new The sealed radioactive source that type provides includes the round tube shell that both ends are semicircular body, since the both ends of round tube shell are semicircular body, is not had It is convex distracted, then it is not in the problem of convex distracted abrasion is implanted into pipeline, therefore reduce the abrasion to implantation pipeline, and the bottom surface of semicircular body It is identical as the radial cross-sectional shape of round tube shell and size, then it is prominent without welding end, also just solve the problems, such as card rifle.

In addition, length is that 4-5mm therefore can be with since the outer diameter of the round tube shell of the utility model is 0.55-0.65mm During operation use thinner puncture needle, it is small to patient trauma, and the operation of stenosis also can be used the sealed radioactive source into Row oncotherapy.And small size can also reduce the yield of radioactive waste, more environmentally-friendly, while also reduce resource wave Take, and reduces product cost.

In clinic, the needle of 20G can be used, the damage compared to the needle of 18G is small.And more easily by gastroscope, fine branch The instrument channels such as diameter or conduit.Also it is easily placed on Esophageal Stent.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.

Fig. 1 is the perspective view of sealed radioactive source provided by the embodiment of the utility model；

Fig. 2 is the schematic diagram of internal structure of sealed radioactive source provided by the embodiment of the utility model.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have Body embodiment is described in further detail the utility model.

As illustrated in fig. 1 and 2, sealed radioactive source provided in this embodiment is the implanted treatment for tumour, sealing radiation Source includes round tube shell 1, and the round tube shell 1 is internally provided with clava, and the outer surface of the clava 2 is attached with radioactivity Nucleic, the both ends of the round tube shell 1 are semicircular body 3, the radial cross-sectional shape of the bottom surface of semicircular body 3 and the round tube shell 1 Identical with size, two semicircular bodies 3 constitute sealing shell with the round tube shell 1.

In the present embodiment, the outer diameter of round tube shell 1 is 0.55-0.65mm, length 4-5mm.The outer diameter of clava 2 is 0.25-0.35mm, length 2.5-3.5mm.The inner wall spaced set of clava 2 and the round tube shell 1.The present embodiment mentions The sealed radioactive source of confession reduces diameter and length compared with prior art, therefore, can use thinner puncture needle during operation, It is small to patient trauma, and the operation of stenosis also can be used the sealed radioactive source and carry out oncotherapy.And small size may be used also It is more environmentally-friendly to reduce the yield of radioactive waste, while the wasting of resources is also reduced, and reduce product cost.

As an alternative embodiment, 0.6mm can also be set by the outer diameter of round tube shell 1, length is set as 4.5mm.The outer diameter of clava 2 is 0.3mm, length 3.0mm.The use of fine needle when the size is more advantageous to operation.Such as facing In bed, the needle of 20G can be used, the damage compared to the needle of 18G is small.And more easily by gastroscope, the fine devices such as branch diameter or conduit Tool channel.Also it is easily placed on Esophageal Stent.

It should be noted that the radionuclide is iodine-125.Other certain common radionuclides can also answer With in the present solution, such as palladium -103 or caesium -137.

Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments Explanation be merely used to help understand the embodiment of the utility model and its core concept；Meanwhile for the general technology of this field Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion The content of the present specification should not be construed as a limitation of the present invention.

Claims (7)

1. a kind of sealed radioactive source, which is characterized in that the sealed radioactive source is used for the implanted treatment of tumour, the sealing radiation Source includes round tube shell, and the round tube interior of shell is provided with clava, and the claval outer surface is attached with radioactive nucleus Element, the both ends of the round tube shell are semicircular body, the radial cross-sectional shape of the bottom surface of the semicircular body and the round tube shell and Size is identical, and two semicircular bodies and the round tube shell constitute sealing shell.

2. sealed radioactive source according to claim 1, which is characterized in that the outer diameter of the round tube shell is 0.55- 0.65mm, length 4-5mm.

3. sealed radioactive source according to claim 1, which is characterized in that the outer diameter of the round tube shell is 0.6mm, length For 4.5mm.

4. sealed radioactive source according to claim 1, which is characterized in that the inner wall of the clava and the round tube shell Spaced set.

5. sealed radioactive source according to claim 1, which is characterized in that the claval outer diameter is 0.25-0.35mm, Length is 2.5-3.5mm.

6. sealed radioactive source according to claim 1, which is characterized in that the claval outer diameter is 0.3mm, and length is 3.0mm。

7. sealed radioactive source according to claim 1, which is characterized in that the radionuclide is iodine-125.