Particle implantation device with double implantation chambers

Abstract

The present invention discloses a particle implantation device with double implantation bins, which belongs to the field of medical device technology. The sliding bin seat is slidably installed in the outer shell, and bin-changing push rods are respectively provided on both sides of the sliding bin seat, and through holes are correspondingly provided on both sides of the outer shell, and the bin-changing push rods pass through the through holes; the sliding bin seat is provided with a first bin position and a second bin position, the first bin position is connected to the radioactive particle implantation bin, and the second bin position is connected to the supporting particle implantation bin; the upper joint assembly is connected to the upper plane of the outer shell, and the lower joint assembly is connected to the lower plane of the outer shell, and the lower joint assembly is used to connect with the implantation needle; the upper plane and the lower plane of the outer shell are respectively provided with an upper through hole and a lower through hole; when the sliding bin seat slides to different gears respectively, the upper joint assembly, the upper through hole, the lower through hole and the lower joint assembly can respectively form a through channel with the first bin position or the second bin position. The present invention can conveniently and quickly place radioactive particles and supporting particles alternately into the implantation needle, and accurately control the distance between two adjacent radioactive particles.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a particle implantation device with double implantation chambers. Background Art

[0002] Radioactive particle implantation technology has been widely used to treat malignant solid tumors. The implementation of this technology mainly relies on the particle implantation device, that is, the particle implantation gun. At present, the particle implantation guns developed in China and abroad are all single-chamber seats, such as the domestic invention patent: a radioactive particle implantation gun with the publication number CN105413049A, and foreign particle implantation guns such as the Mick200 implantation gun. When implanting particles, the above-mentioned device uses the needle withdrawal method to intermittently distribute particles. Due to the accuracy of the operator's needle withdrawal distance each time, the displacement of the particles that have been pushed out during the needle withdrawal, and other factors, it is difficult to achieve accurate spacing for the distribution of particles. Summary of the invention

[0003] In order to solve the defects existing in the above-mentioned prior art, the purpose of the present invention is to provide a particle implantation device with dual implantation chambers, which can conveniently and quickly place radioactive particles and supporting particles alternately into the implantation needle and accurately control the distance between two adjacent radioactive particles.

[0004] The present invention is achieved through the following technical solutions:

[0005] The present invention discloses a particle implantation device with double implantation chambers, comprising a housing, a central sliding chamber seat, a radioactive particle implantation chamber, a supporting particle implantation chamber, an upper joint assembly and a lower joint assembly;

[0006] The sliding bin seat is slidably installed in the shell, and bin changing push rods are respectively provided on both sides of the sliding bin seat, and through holes are correspondingly provided on both sides of the shell, and the bin changing push rods pass through the through holes; the sliding bin seat is provided with a first bin position and a second bin position, the first bin position is connected to the radioactive particle implantation bin, and the second bin position is connected to the supporting particle implantation bin; the upper joint assembly is connected to the upper plane of the shell, and the lower joint assembly is connected to the lower plane of the shell, and the lower joint assembly is used to connect with the implantation needle; the upper plane and the lower plane of the shell are respectively provided with an upper through hole and a lower through hole; when the sliding bin seat slides to different gears respectively, the upper joint assembly, the upper through hole, the lower through hole and the lower joint assembly can form a through channel with the first bin position or the second bin position respectively.

[0007] Preferably, a limit block matching the position of the sliding seat is provided inside the shell.

[0008] Preferably, the housing and the sliding compartment seat are positioned at gear positions via a ball pin.

[0009] Preferably, matching slide grooves and slide rails are respectively provided inside the shell and on the sliding seat.

[0010] Preferably, the bin-changing push rod is connected with a handle.

[0011] Preferably, the support particles implanted in the support particle chamber are degradable particles.

[0012] Preferably, the supporting particles in the supporting particle implantation chamber are drug-loaded particles.

[0013] Preferably, the upper joint assembly includes a sleeve and a connecting piece, the sleeve is connected to the connecting piece, the connecting piece is connected to the upper plane of the housing, and the sleeve and the connecting piece have concentric through holes in their centers.

[0014] Preferably, the lower connector assembly comprises a socket and a connector, the connector is used to connect with the implant needle, and the socket is used to fix the implant needle.

[0015] Preferably, it also includes a bracket and a bottom plate, the middle part of the bracket is connected to the shell, and the lower part of the bracket is connected to the bottom plate.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The present invention discloses a particle implantation device with double implantation chambers. The sliding chamber seat can slide in the shell to switch different gears, so that the radioactive particles and the supporting particles can be conveniently and quickly placed alternately in the implantation needle, and finally implanted into the tumor body; by supporting the two radioactive particles with a certain length, the distance between the two adjacent radioactive particles in the same needle channel can be stably maintained; the upper joint assembly can stabilize the push rod to push the particles into the tumor body, which can improve the accuracy of the position of the implanted particles in the tumor lesion. Because the effective treatment range of radioactive particles has relatively strict requirements, maintaining the stability of the distance between adjacent particles can avoid the occurrence of hot spots (too high dose areas) and cold spots (too low dose areas) in the tumor body after implantation, and at the same time increase the consistency of the treatment implantation plan before and after implantation, so as to achieve accurate control of the particle implantation radiation dose and improve the local treatment efficacy of tumors.

[0018] Furthermore, a limit block matching the gear position of the sliding seat is provided inside the shell, which can be easily positioned at different gear positions, and has a simple structure and operation.

[0019] Furthermore, the housing and the sliding seat are positioned at different positions by means of a ball pin, so the positioning is precise and the operation is smooth.

[0020] Furthermore, the outer shell and the sliding compartment seat slide via the sliding groove and the sliding rail, so the structure is stable and the operation is simple.

[0021] Furthermore, the chamber changing push rod is connected with a handle to facilitate the operator's operation.

[0022] Furthermore, the supporting particles in the supporting particle implantation chamber are degradable particles, which degrade by themselves within a period of time after the operation.

[0023] Furthermore, the support particles in the support particle implantation chamber are drug-loaded particles, which can have a certain therapeutic effect while providing support and maintaining the distance between radioactive particles.

[0024] Furthermore, the sleeve of the upper joint assembly can keep the push pin pushed down vertically, thereby improving the stability and accuracy of the operation.

[0025] Furthermore, the holder of the lower connector assembly can be fixedly connected to the implant needle to improve the stability of the operation.

[0026] Furthermore, the bracket and the bottom plate can provide a fulcrum for the entire device to ensure stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the present invention without the radioactive particle implantation chamber and the supporting particle implantation chamber;

[0029] Figure 3 The figure is a flow chart of the method for using the present invention.

[0030] In the figure: 1-housing, 2-central sliding chamber seat, 2-1-pull rod, 2-2-handle, 3-radioactive seed implantation chamber, 4-supporting seed implantation chamber, 5-upper joint assembly, 6-lower joint assembly. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, the contents of which are intended to explain the present invention rather than to limit it:

[0032] like Figure 1 The particle implantation device with double implantation chambers of the present invention comprises a housing 1, a central sliding chamber seat 2, a radioactive particle implantation chamber 3, a supporting particle implantation chamber 4, an upper joint assembly 5 and a lower joint assembly 6; Figure 2 , which is a state diagram when the radioactive particle implantation chamber 3 and the supporting particle implantation chamber 4 are not installed.

[0033] The sliding bin seat 2 is slidably installed in the shell 1, and bin-changing push rods 2-1 are respectively provided on both sides of the sliding bin seat 2, and through holes are correspondingly provided on both sides of the shell 1, and the bin-changing push rods 2-1 pass through the through holes; the sliding bin seat 2 is provided with a first bin position and a second bin position, the first bin position is connected to the radioactive particle implantation bin 3, and the second bin position is connected to the supporting particle implantation bin 4; the upper joint assembly 5 is connected to the upper plane of the shell 1, and the lower joint assembly 6 is connected to the lower plane of the shell 1, and the lower joint assembly 6 is used to connect with the implantation needle; the upper plane and the lower plane of the shell 1 are respectively provided with an upper through hole and a lower through hole. Regarding the positions of the first bin position and the second bin position, they can be arranged in parallel on one side of the sliding bin seat 2, or on two opposite sides, or on any two sides.

[0034] When the sliding bin seat 2 slides to two different gears respectively, the upper joint assembly 5, the upper through hole, the lower through hole and the lower joint assembly 6 can form a through channel with the first bin position or the second bin position respectively. Specifically, when the sliding bin seat 2 slides to the first gear, the upper joint assembly 5, the upper through hole, the radioactive particle implantation bin 3, the lower through hole and the lower joint assembly 6 are connected in sequence, and the push pin can push the radioactive particles in the radioactive particle implantation bin 3 along the channel into the implantation needle from the connected channel. When the sliding bin seat 2 slides to the second gear, the upper joint assembly 5, the upper through hole, the supporting particle implantation bin 4, the lower through hole and the lower joint assembly 6 are connected in sequence, and the push pin can push the supporting particles in the supporting particle implantation bin 4 along the channel into the implantation needle from the connected channel.

[0035] In one embodiment of the present invention, a limit block matching the gear position of the sliding seat 2 is provided inside the housing 1, and the gear position is switched by the limit blocks at both ends.

[0036] In a preferred embodiment of the present invention, the housing 1 and the sliding housing seat 2 are positioned by ball pins, and a plurality of ball pins and matching pin holes are provided on the housing 1 and the sliding housing seat 2, so as to achieve precise positioning and smooth operation.

[0037] In one embodiment of the present invention, a sliding rod is fixed inside the housing 1, and the sliding compartment seat 2 is inserted into the sliding rod to achieve sliding.

[0038] In a preferred embodiment of the present invention, matching slide grooves and slide rails are respectively provided inside the housing 1 and on the sliding compartment seat 2, so that the manufacturing, processing, assembly and use are simple and the matching precision is high.

[0039] In a preferred embodiment of the present invention, the bin changing push rod 2-1 is connected to a handle 2-2, and the handle 2-2 preferably has a smooth curved surface and a shape suitable for grasping, holding, and pushing, such as a circle, an ellipse, etc.; further optimized, an anti-slip pattern is provided on the handle 2-2.

[0040] The supporting particles in the supporting particle implantation chamber 4 can be degradable particles, and the material is a polymer material, such as polyglycolic acid, poly(lactide-glycolide) or polylactic acid, etc.; natural macromolecules, such as chitosan, gelatin or silk fibroin, etc.; metal materials, such as magnesium and magnesium alloys, iron and iron alloys, etc. It is also possible to use two or more materials to blend or copolymerize to form a degradable medical composite material. It is prepared by mature processes such as melt injection molding, melt extrusion molding, film molding or biological 3D printing.

[0041] The support particles in the support particle implantation chamber 4 may be drug-loaded particles, such as particles loaded with anti-tumor chemotherapy drugs, targeted drugs, and immune drugs.

[0042] In a preferred embodiment of the present invention, the upper joint assembly 5 includes a sleeve and a connecting piece, the sleeve is connected to the connecting piece, the connecting piece is fixedly connected to the upper plane of the housing 1, and the sleeve and the connecting piece have concentric through holes in their centers.

[0043] In a preferred embodiment of the present invention, the lower connector assembly 6 includes a holder and a connector, the connector is used to connect with the implant needle, and the holder is used to fix the implant needle. Figure 1 and Figure 2 , two types of cartridges are shown respectively. Specifically, they are designed according to the form of the tail of the implant needle to be compatible with different types of implant needles.

[0044] It also includes a bracket and a bottom plate, wherein the middle portion of the bracket is connected to the housing 1, and the lower portion of the bracket is connected to the bottom plate.

[0045] like Figure 3 , the method of using the above-mentioned particle implantation device with double implantation chambers:

[0046] 1) After all the needle cloth needles are implanted, the radioactive particle implantation chamber 3 and the supporting particle implantation chamber 4 are respectively installed in the first and second positions of the sliding chamber seat 2; the lower joint assembly 6 is connected to the implantation needle;

[0047] 2) The push needle is inserted through the upper joint assembly 5. When the sliding housing 2 slides in the housing 1 to switch gears, the radioactive particles (black solid) and the supporting particles (white hollow) are pushed into the implant needle in sequence through the through-channel formed by the upper through hole, the lower through hole and the lower joint assembly 6 and the first or second position;

[0048] 3) Push the required number of implanted particles, and push the push rod to the upper edge of the tumor. At this time, all particles stay in the implantation needle in sequence;

[0049] 4) Keep the push rod still, pull out the implantation needle and the implantation device of the present invention at the same time, and all the particles are sequentially retained inside the tumor, thus completing the particle implantation operation at the implantation needle site.

[0050] It should be noted that the above is only one of the embodiments of the present invention, and equivalent changes made to the system described in the present invention are all included in the protection scope of the present invention. Those skilled in the art of the present invention can make similar substitutions for the specific examples described, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they are all within the protection scope of the present invention.

Claims

1. A particle implantation device with dual implantation chambers, characterized in that: It comprises a housing (1), a central sliding chamber seat (2), a radioactive particle implantation chamber (3), a supporting particle implantation chamber (4), an upper joint assembly (5) and a lower joint assembly (6); The sliding bin seat (2) is slidably mounted in the outer shell (1); bin changing push rods (2-1) are respectively provided on both sides of the sliding bin seat (2); through holes are correspondingly provided on both sides of the outer shell (1); and the bin changing push rods (2-1) pass through the through holes; a first bin position and a second bin position are provided on the sliding bin seat (2); the first bin position is connected to the radioactive particle implantation bin (3); and the second bin position is connected to the supporting particle implantation bin (4); an upper joint assembly (5) is connected to an upper plane of the outer shell (1); a lower joint assembly (6) is connected to a lower plane of the outer shell (1); and the lower joint assembly (6) is used to connect to an implantation needle; an upper through hole and a lower through hole are respectively provided on the upper plane and the lower plane of the outer shell (1); when the sliding bin seat (2) slides to different gear positions, the upper joint assembly (5), the upper through hole, the lower through hole and the lower joint assembly (6) can respectively form a through channel with the first bin position or the second bin position; A limit block matching the gear position of the sliding seat (2) is provided inside the housing (1); The housing (1) and the sliding bin seat (2) are positioned at gear positions via a ball pin.

2. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: Matching slide grooves and slide rails are respectively provided inside the housing (1) and on the sliding compartment seat (2).

3. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: The bin-changing push rod (2-1) is connected to a handle (2-2).

4. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: The supporting particles in the supporting particle implantation chamber (4) are degradable particles.

5. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: The supporting particles in the supporting particle implantation chamber (4) are drug-loaded particles.

6. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: The upper joint assembly (5) comprises a sleeve and a connecting piece, the sleeve is connected to the connecting piece, the connecting piece is connected to the upper plane of the housing (1), and the sleeve and the connecting piece have concentric through holes at their centers.

7. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: The lower connector assembly (6) comprises a socket and a connector, wherein the connector is used to connect to the implant needle, and the socket is used to fix the implant needle.

8. The particle implantation device with dual implantation chambers according to claim 1, characterized in that: It also includes a bracket and a bottom plate, wherein the middle portion of the bracket is connected to the outer shell (1), and the lower portion of the bracket is connected to the bottom plate.

Images