CN211068740U

CN211068740U - Particle matrix screen cloth for brachytherapy

Info

Publication number: CN211068740U
Application number: CN201921300233.8U
Authority: CN
Inventors: 阎尔坤; 白红升; 田旭; 崔贝
Original assignee: Seeds Biological Pharmacy Tianjin Co ltd
Current assignee: Seeds Biological Pharmacy Tianjin Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-24
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a particle matrix screen cloth for short-distance radiotherapy, which comprises a biological absorbable mesh cloth with holes and a particle chain, wherein the holes of the biological absorbable mesh cloth with holes are arranged in a row; the particle chain comprises a bioabsorbable tube, radioactive particles and bioabsorbable spacers which are alternately arranged are arranged in the tube, and two ends of the bioabsorbable tube are sealed; the particle chain is arranged on the bioabsorbable perforated mesh cloth through the holes. The utility model discloses a particle matrix screen cloth for brachytherapy has exempts from to take out, convenient to use, implants efficiently, and the particle is difficult for the migration, can realize the high accuracy conformal radiotherapy of tumor tissue and advantage such as effectual with the curative effect, can be used to the brachytherapy of the remaining focus of tangent plane after the excision of solid tumors such as lung cancer.

Description

Particle matrix screen cloth for brachytherapy

Technical Field

The utility model belongs to the field of radiation medical equipment, concretely relates to a particle matrix screen cloth for brachytherapy.

Background

Brachytherapy, also known as brachytherapy, is a treatment method in which radioactive seeds are directly implanted into a cancerous region to perform precise radiation on the cancerous tissue.

The advantage of this therapy is that it achieves high doses of radiation to cancerous regions while greatly reducing damage to surrounding healthy tissue. The existing particle implantation technology is generally to implant particles into tumor tissues by using a particle implantation gun under the guidance of thoracoscope, ultrasonic image and the like. In the operation process, an operator implants the particles in the particle bin into the cancerated tissue one by utilizing the firing pin at the rear end of the implantation gun according to expected dose distribution.

For radiotherapy of residual focus of section after resection of solid tumor such as lung cancer and radiotherapy of some superficial tumor, it is often necessary to implant a shallow position. Under the condition, the particles are implanted into the tissue surface layer by using an inserting and implanting technology, so that the efficiency is low and the operation difficulty is extremely high. If the implant is too deep, the deep healthy tissue can be damaged, and meanwhile, the surface radiation dose is insufficient; if the implantation is too shallow, the particles are likely to fall off or shift. Chinese patent CN 208481895U discloses a polylactic acid patch for local precise radiotherapy, which uses polylactic acid strips to form a square grid frame, and sequentially inserts iodine-125 particles into the grid cross coincident points to form a patch that can be attached to the surface of a tumor. However, the grid of the patent is complex to manufacture, no other fixing mode is available after the iodine-125 particles are inserted into the cross points of the polylactic acid strips, and the risk of particle falling and displacement exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a particle matrix screen cloth for brachytherapy.

The technical scheme of the utility model outlines as follows:

a particle matrix mesh for brachytherapy comprises a bioabsorbable perforated mesh 1 and particle chains 2, wherein holes 1-1 of the bioabsorbable perforated mesh 1 are arranged in a row; the particle chain 2 comprises a bioabsorbable tube 2-1, radioactive particles 2-2 and bioabsorbable spacers 2-3 which are alternately arranged are arranged in the tube, and two ends of the bioabsorbable tube are sealed; the particle chains 2 are arranged on the bioabsorbable perforated mesh cloth 1 through the holes 1-1.

The row spacing b of the holes 1-1 is 5-10mm, the row spacing a of the holes is 5-40mm, and the diameter of the holes 1-1 is 0.6-1.5 mm;

the bio-absorbable mesh with holes is poly (glycolide-co-lactide) mesh with holes, polyglycolic acid mesh with holes, polylactic acid mesh with holes or poly (p-dioxanone) mesh with holes.

The biological absorbable tube 2-1 is a poly (glycolide-co-lactide) tube, a polyglycolic acid tube, a polylactic acid tube or a poly (p-dioxanone) tube.

The bioabsorbable spacer 2-3 is a poly (glycolide-co-lactide) spacer, a poly (glycolic acid) spacer, a poly (lactic acid) spacer or a poly (p-dioxanone) spacer.

The radioactive particles 2-2 are iodine-125 particles, palladium-103 particles, gold-198 particles, cesium-131 particles, ytterbium-169 particles, yttrium-90 particles or phosphorus-32 particles.

The utility model has the advantages that:

1. the particle matrix screen cloth for the brachytherapy of the utility model can implant particles in the operation at one time, thereby greatly improving the implantation efficiency;

2. the utility model discloses a particle matrix screen cloth for brachytherapy can easily apply ointment or plaster at the tissue surface that needs the radiation, can keep pasting along with the change of the attached surface of tissue, avoids the particle to shift simultaneously and drops, can realize the high accuracy conformal radiotherapy to tumor tissue, effectively ensures the operation and reaches ideal treatment.

3. The utility model discloses use foraminiferous screen cloth of adsorbability, adsorbability pipe and adsorbability spacer, implant internal avoiding taking out.

Drawings

FIG. 1 is a schematic view of a bioabsorbable foraminous mesh fabric for a particle matrix mesh fabric for brachytherapy.

Fig. 2 is a schematic view of a particle chain structure.

FIG. 3 is a schematic view of a particle matrix mesh for brachytherapy.

The specific implementation mode is as follows:

the present invention will be further described with reference to the accompanying drawings.

A particle matrix mesh for brachytherapy comprises a bioabsorbable perforated mesh 1 and particle chains 2, wherein holes 1-1 of the bioabsorbable perforated mesh 1 are arranged in a row; the particle chain 2 comprises a bioabsorbable tube 2-1, radioactive particles 2-2 and bioabsorbable spacers 2-3 which are alternately arranged are arranged in the tube, and two ends of the bioabsorbable tube are sealed; the particle chain 2 is arranged on the bioabsorbable perforated mesh cloth 1 through the holes 1-1.

The line spacing b of the holes 1-1 is any number of 5-10mm, the line spacing a of the holes is any number of 5-40mm, and the holes 1-1

The diameter is any number of 0.6-1.5 mm;

Prefabricating a particle chain:

the bio-absorbable spacers and the radioactive particles are alternately loaded into the bio-absorbable tube, the distance between the radioactive particles is adjusted by using the length of the bio-absorbable spacers, and finally, the two ends of the bio-absorbable tube are hot-melted and plugged.

The particle chains sequentially penetrate and penetrate through one row of holes of the bio-absorbable perforated mesh cloth, the particle chains are fixed on the bio-absorbable perforated mesh cloth at two ends of the particle chains or can be fixed through knotting, the second particle chain penetrates through the next row of holes and is fixed according to the required interval, and the particle matrix mesh cloth for near-distance radiotherapy is prepared on the bio-absorbable perforated mesh cloth until all the particle chains 2 are fixed on the bio-absorbable perforated mesh cloth according to the steps.

During operation, the particle matrix mesh cloth for brachytherapy is attached to the tissue area needing radiotherapy, and the particle matrix mesh cloth for brachytherapy is fixed by a bioabsorbable suture line.

Claims

1. A particle matrix mesh for brachytherapy comprises a bioabsorbable perforated mesh (1) and particle chains (2), and is characterized in that holes (1-1) of the bioabsorbable perforated mesh (1) are arranged in rows; the particle chain (2) comprises a bioabsorbable tube (2-1), radioactive particles (2-2) and bioabsorbable spacers (2-3) which are alternately arranged are arranged in the tube, and two ends of the bioabsorbable tube are sealed; the particle chain (2) is arranged on the bio-absorbable mesh cloth (1) through the holes (1-1).

2. A particle matrix web for brachytherapy as claimed in claim 1, wherein the pitch (b) between rows of holes (1-1) is 5-10mm, the pitch (a) between rows of holes is 5-40mm, and the diameter of holes (1-1) is 0.6-1.5 mm.

3. The particle matrix screen cloth for brachytherapy as claimed in claim 1, wherein the bioabsorbable perforated screen cloth is a polyglycolide perforated screen cloth, a polylactic acid perforated screen cloth or a polydioxanone perforated screen cloth.

4. A particle matrix screen cloth for brachytherapy as claimed in claim 1, wherein the bioabsorbable tube (2-1) is a polyglycolide tube, a polyglycolic acid tube, a polylactic acid tube or a polydioxanone tube.

5. A particle matrix screen cloth for brachytherapy as claimed in claim 1, wherein the bioabsorbable spacer (2-3) is a poly (glycolide) spacer, a poly (glycolic acid) spacer, a poly (lactic acid) spacer or a poly (p-dioxanone) spacer.

6. A particle matrix web for brachytherapy according to claim 1, characterized in that the radioactive particles (2-2) are iodine-125 particles, palladium-103 particles, gold-198 particles, cesium-131 particles, ytterbium-169 particles, yttrium-90 particles or phosphorus-32 particles.