Radiation particle loader

Abstract

The present invention discloses a radioactive particle loader, comprising an elastic fixing part, which is a tubular structure with a through hole; a mounting part, which is arranged on the elastic fixing part; and a radioactive particle strip, which comprises a particle tube mounted in the mounting part and radioactive particles filled in the particle tube; the elastic fixing part is mounted on a drainage tube or a bracket through the through hole. The present invention has the advantages that the radioactive particle strip is mounted on the elastic tube, and the elastic tube can be mounted on drainage tubes or brackets of different specifications and types, and can be applied to radiotherapy of different tumors, with a wide range of applications; the radioactive particles can be implanted by inserting the drainage tube into the patient's body through puncture, and the operation is simple; and the length of the mounting groove is less than the length of the particle tube, and the limit blocks at both ends of the mounting groove can limit the particle tube filled with radioactive particles; and the contact surface between the particle tube and the limit block is a concave-convex connection surface, which further ensures the fixing effect of the particle tube.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to a radiation particle loader used in radiation particle implantation. Background Art

[0002] Radiation particle implantation is to implant iodine-125 particles that emit low-energy radiation directly into tumor tissue under the guidance of X-ray, CT or ultrasound images, so as to continuously kill tumor tissue with radiation. At present, radiation particle implantation has been widely used in clinical practice because of its advantages of small internal radiation dose, accurate treatment positioning, high local dose to tumor, small radiation radius, and little damage to surrounding normal tissues.

[0003] At present, the radioactive particles are generally directly encapsulated in a particle tube in clinical practice, and then the particle tube is directly implanted into the patient's tumor tissue. However, the particle tube has a poor fixation effect and is easy to fall out during treatment, affecting the treatment effect.

[0004] In order to solve the above technical problems, some manufacturers have improved the drainage tube, that is, directly loading the particle tube on the drainage tube, and inserting the drainage tube into the patient's body by puncture to achieve the implantation of radioactive particles. However, the types of drainage tubes with radioactive particles on the existing market are extremely limited, and the clinical conditions are diverse, and the corresponding types of drainage tubes are also diverse. It is difficult to meet the radiotherapy needs of tumor tissues in different parts by only improving individual drainage tubes. Therefore, how to design a radioactive particle loader with a wide range of applications and suitable for a variety of tumor tissues is an important problem that technicians in this field need to solve urgently. Summary of the invention

[0005] The present invention aims to provide a radioactive particle loader which can be mounted on different types of drainage tubes without the need to improve the drainage tubes, and the implantation operation is simple and convenient.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The radiation particle loader of the present invention comprises:

[0008] The elastic fixing part is a tubular structure with a through hole;

[0009] A mounting portion, disposed on the elastic fixing portion; and

[0010] A radioactive particle bar, comprising a particle tube mounted in the mounting portion and radioactive particles filled in the particle tube;

[0011] Wherein, the elastic fixing part is sleeved on the drainage tube or the bracket through the through hole.

[0012] Furthermore, the elastic fixing portion is an elastic tube having the through hole.

[0013] Furthermore, the mounting portion comprises a mounting groove which is opened on the outer side wall of the elastic tube along the length direction thereof and has an arc-shaped cross section, and the radioactive particle strip is clamped in the mounting groove.

[0014] Furthermore, there is at least one mounting groove and at least one radiative particle strip.

[0015] Furthermore, the radiation particle loader further comprises stoppers symmetrically arranged at both ends of the elastic tube, and the contact surfaces between the stoppers and the particle tube are concave-convex connection surfaces that match each other.

[0016] Furthermore, each of the limiting members has a boss, and both ends of the particle tube are respectively provided with slots matching the boss.

[0017] Furthermore, the radiation particle loader further includes a developing marking portion provided on the elastic fixing portion or the particle tube.

[0018] Furthermore, the development marking portion includes a plurality of metal marking sheets evenly spaced apart on the elastic fixing portion.

[0019] Furthermore, the length of the elastic fixing portion is 4-12 mm.

[0020] The advantage of the present invention is that the radioactive particle strip is mounted on an elastic tube, and the elastic tube can be mounted on drainage tubes or stents of different specifications and types, and can be applied to radiotherapy of different tumors, with a wide range of applications; during implantation, the radioactive particles can be implanted by placing the drainage tube into the patient's body through puncture, and the operation is simple.

[0021] The length of the mounting groove in the present invention is smaller than the length of the particle tube, and the limiting blocks at both ends of the mounting groove can limit the particle tube filled with radioactive particles; and the contact surface between the particle tube and the limiting blocks is a concave-convex connection surface (the particle tube is provided with a slot and the limiting blocks are provided with a boss), which further ensures the fixing effect of the particle tube and prevents the particle tube from falling off the elastic tube.

[0022] The elastic tube of the present invention is also provided with a metal marker sheet, which can be developed under imaging equipment such as CT, so that the surgeon can accurately know the position of the elastic tube and further determine the position of the particle tube to ensure that the particle tube is implanted into the patient's tumor tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0025] Figure 3 yes Figure 1 BB view in the figure. DETAILED DESCRIPTION

[0026] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0027] like Figure 1-3 As shown, the radiation particle loader of the present invention comprises

[0028] The elastic fixing part is an elastic tube 1 with a through hole, and its length has various specifications according to the length of the tumor tissue, such as 10 mm and 12 mm;

[0029] A mounting portion, disposed on the elastic tube 1; and

[0030] The radioactive particle bar comprises a particle tube 2 mounted in the mounting portion and radioactive particles 3 filled in the particle tube 2 (the radioactive particles 3 are iodine 125 particles with a length of about 4.5 mm and a diameter of about 0.8 mm);

[0031] The elastic tube 1 is sleeved on the drainage tube or stent (usually a plastic stent) through the through hole, and the drainage tube or stent is implanted into the patient's tumor tissue by puncture, so that the radioactive particle strips on the elastic tube 1 are located in the tumor tissue.

[0032] like Figure 1-3 As shown, the mounting portion includes mounting grooves which are provided on the outer wall of the elastic tube 1 and have an arc-shaped cross section. There are two mounting grooves (of course, the mounting grooves can also be processed into three or four, or even more, depending on the size of the tumor tissue). The mounting grooves extend along the length direction of the elastic tube 1, and a radioactive particle strip is clamped in each mounting groove.

[0033] like Figure 1-2 As shown, in order to ensure the installation stability of the radiation particle strip, limiting pieces are symmetrically arranged at the two ends of the elastic tube 1, and the limiting pieces are limiting blocks 4 integrally formed with the elastic tube 1 (that is, the length of the installation groove is less than the length of the elastic tube 1, and the elastic tube 1 body corresponding to the two ends of the installation groove forms limiting blocks 4). The limiting blocks 4 and the installation groove jointly limit the radiation particle strip to ensure its installation stability.

[0034] like Figure 1-2As shown, in order to further prevent the radiation particle strip from falling out of the installation groove, the contact surface between the particle tube 2 and the limiting block 4 is a concave-convex connection surface that matches each other. Specifically, during actual processing, a boss 5 is provided on each limiting block 4 at both ends of the installation groove, and the two ends of the particle tube 2 are correspondingly provided as slots corresponding to the boss 5 (of course, during actual processing, a slot can also be provided on the limiting block 4, and bosses are provided at both ends of the particle tube 2). After the radiation particle strip is installed in place, the bosses 5 at both ends of the installation groove are respectively clamped in the corresponding slots, further limiting the particle tube 2 to prevent it from falling off.

[0035] like Figure 1 As shown, a developing marking portion is provided on the outer side wall of the elastic tube 1, and the developing marking portion includes metal marking pieces 6 (which are platinum metal pieces, and may be two or more) evenly spaced on the outer side wall of the elastic tube 1. The metal marking pieces 6 can be developed under imaging equipment such as CT, thereby ensuring that the doctor can be familiar with the accurate position of the radiation particle strip to ensure smooth catheterization; when the length of the elastic tube 1 is ≥8mm, three evenly spaced metal marking pieces can be evenly provided on the elastic tube 1, and the spacing between two adjacent metal marking pieces 6 can be flexibly adjusted according to the length of the elastic tube 1, such as when the length of the elastic tube is 10mm, the spacing between two adjacent metal marking pieces 6 is 5mm; when the length of the elastic tube 1 is 12mm, the spacing between two adjacent metal marking pieces 6 is 6mm; when the length of the elastic tube 1 is 4mm or 6mm, one metal marking piece 6 is provided at each end of the elastic tube 1, and the metal marking piece 6 is used as a scale mark to determine the length implanted into the tumor tissue.

[0036] During actual processing, the length of the elastic tube 1 can be flexibly selected according to the length of the tumor. During processing, the length of the elastic tube 1 can be processed into a variety of different specifications to enable it to hold radioactive particle strips of different specifications, further meeting the radiotherapy needs of tumor tissues of different lengths.

[0037] The radioactive particle loader of the present invention can be mounted on drainage tubes or stents of different specifications and types, and can be used in conjunction with the drainage tubes to treat a variety of tumor tissues (such as bile duct cancerous tissues, liver cancerous tissues, etc.), without any need to improve existing drainage tubes on the market, and has a wide range of applications. At the same time, since the radioactive particle loader is mounted on the drainage tube, the radioactive particles 3 can be placed in the patient's cancerous tissue according to the conventional placement operation of the drainage tube in clinical practice, and the operation is simple.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the direction of a certain posture (such as the attached Figure 1The relative position relationship and movement conditions between the components under the control of the controller (as shown in the figure) and the like, if the specific posture changes, the directional indication will also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", "fix" and the like should be understood in a broad sense. For example, "fix" can be a fixed connection, a detachable connection, or an integral one; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

Claims

1. A radioactive particle loader, characterized in that: The invention comprises an elastic fixing part, a mounting part, at least one radioactive particle strip and a stopper, wherein the elastic fixing part is an elastic tube with a through hole; the mounting part comprises a mounting groove with an arc-shaped cross section and opened on the outer side wall of the elastic tube along the length direction, and the radioactive particle strip is clamped in the mounting groove; the radioactive particle strip comprises a particle tube clamped in the mounting part and radioactive particles filled in the particle tube; The length of the elastic fixing part is 4-12mm, the limiting pieces are symmetrically arranged at the two ends of the elastic tube, and the contact surfaces of the limiting pieces and the particle tube are concave-convex connection surfaces that match each other; each limiting piece has a boss, and the two ends of the particle tube are respectively provided with a slot that matches the boss; The radiation particle loader further comprises a developing marking portion arranged on the elastic fixing portion or the particle tube, wherein the developing marking portion comprises a plurality of metal marking sheets evenly spaced and arranged on the elastic fixing portion; Wherein, the elastic fixing part is sleeved on the drainage tube or the bracket through the through hole.

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