Radioactive particle implantation device

Abstract

The invention provides a radioactive particle implanting device which comprises a guide pipe, a connecting piece is arranged on the edge of one end of the guide pipe, a rotating column is rotationally mounted on the connecting piece, a first gear is arranged at one end of the rotating column, a push rod is movably inserted into the other end of the guide pipe, and a rack meshed with the first gear is slidably mounted on the outer side of the guide pipe; the semicircular cylinder clamping sleeve is installed at the other end of the rotating column, elastic clamping strips are arranged on the edges of the two sides of the semicircular cylinder clamping sleeve respectively, and a containing groove is formed in the inner side of the semicircular cylinder clamping sleeve; the pushing structure comprises elastic pieces and a traction rope, the two elastic pieces are located in the containing groove, one ends of the elastic pieces are fixedly connected with the end, close to the guide pipe, of the containing groove, the other ends of the elastic pieces are slidably connected with the inner walls of the two sides of the containing groove, the middles of the two elastic pieces arch towards the outside of the containing groove, and one end of the traction rope is fixedly connected between the other ends of the two elastic pieces. According to the invention, the release angle and position of the radioactive particles can be adjusted according to the shape of the tumor tissue, so that each radioactive particle can be more uniformly released everywhere in the tumor tissue.

Description

Technical Field

[0001] The present invention relates to the technical field of tumor treatment, and in particular to a radioactive particle implantation device. Background Art

[0002] Interstitial radioactive particle implantation therapy is a method of implanting micro-radioactive particles into tumors or tissues infiltrated by tumors, including tissues where malignant tumors have spread along the lymphatic pathways. The radioactive particle source emits continuous low-energy gamma rays, causing the tumor tissue to suffer maximum radiation damage and destruction, while normal tissues are not damaged or only slightly damaged, thereby achieving the purpose of treatment.

[0003] Currently, when implanting radioactive particles, a puncture needle is first used to build a channel to implant the radioactive particles into the tumor, and then a particle implantation device is used to push the radioactive particles to the target location. However, tumors are usually irregular in shape, and conventional particle implantation devices can only place the radioactive particles in a straight line. This results in the implantation angle and position of the radioactive particles being too single. The placement angle and position of the particles cannot be changed, and the radioactive particles in the tumor may be too concentrated and unevenly distributed, which makes it difficult to fully destroy the tumor tissue. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a radiation particle implantation device to solve the above problems.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The present invention provides a radiation particle implantation device, comprising:

[0007] The guide tube has a connecting piece at one end edge, a rotating column is rotatably mounted on the connecting piece, one end of the rotating column is located outside the connecting piece and is provided with a first gear, a push rod is movably inserted at the other end of the guide tube, and a rack meshing with the first gear is slidably mounted on the outside of the guide tube;

[0008] A semi-cylindrical ferrule is installed at the other end of the rotating column and can be coaxial with the guide tube. The edges of both sides of the semi-cylindrical ferrule are respectively provided with elastic clips, and the inner side of the semi-cylindrical ferrule is provided with a receiving groove;

[0009] The pushing structure includes an elastic sheet and a pulling rope. The two elastic sheets are respectively located in the receiving grooves. One end of the two elastic sheets is fixedly connected to one end of the receiving groove close to the guide tube, and the other end is slidingly connected to the inner walls on both sides of the receiving groove. The middle parts of the two elastic sheets are arched outward from the receiving groove, and one end of the pulling rope is fixedly connected between the other ends of the two elastic sheets.

[0010] Furthermore, a pushing bin is provided at one end of the guide tube away from the connecting plate, a pushing channel groove is provided on one inner wall of the pushing bin, a lower opening connected to the guide tube is provided at the bottom end of the pushing channel groove, and an upper opening for inserting a push rod is provided at the top end, a placement opening is provided on one side of the pushing bin away from the pushing channel groove, and a pushing block is slidably inserted in the placement opening.

[0011] Furthermore, a second gear meshing with the rack is rotatably mounted on the outer side of one end of the guide tube away from the connecting piece, and a rotating handle is provided on the outer side of the second gear.

[0012] Furthermore, the two ends of the rotating handle are oriented in the same direction as the two ends of the semi-cylindrical ferrule.

[0013] Furthermore, a first channel is opened inside the side wall of the semi-cylindrical ferrule, one end of the first channel is connected to the accommodating groove and the other end extends to the end of the semi-cylindrical ferrule close to the guide tube, and a second channel is opened inside the side wall of the guide tube, one end of the second channel is located at the end of the guide tube close to the first channel and the other end extends to the outside of the guide tube, and the other end of the pulling rope passes through the first channel and the second channel in sequence and is located outside the guide tube.

[0014] Furthermore, a control strip is slidably installed on the outer side of the guide tube between the second gear and the second channel opening on the outer side of the guide tube, and sliding the control strip can make it press against the second gear or cover the second channel opening on the outer side of the guide tube.

[0015] Furthermore, a limiting plate is provided at one end of the semi-cylindrical ferrule away from the guide tube.

[0016] It can be seen from the above technical solution that the present invention provides a radioactive particle implantation device:

[0017] During specific use, the radioactive particles are placed in the guide tube, and the semi-cylindrical ferrule is rotated to a position coaxial with the guide tube, and then the guide tube is inserted into the constructed puncture needle with the semi-cylindrical ferrule as the insertion end. After reaching the designated position, the radioactive particles are pushed from the guide tube into the semi-cylindrical ferrule by a push rod, and the elastic clamping strip clamps the radioactive particles in the semi-cylindrical ferrule. Subsequently, the first gear is driven by the moving rack to drive the semi-cylindrical ferrule to rotate, and the guide tube is axially rotated to change the placement angle of the radioactive particles. After adjustment, the pulling rope is pulled outward, and the pulling rope drives the two ends of the elastic sheet to contract. The middle part of the elastic sheet will greatly arch outward and push the radioactive particles out of the semi-cylindrical ferrule, so that the radioactive particles can be released at a certain angle in the tumor tissue. The release angle and position of the radioactive particles can be adjusted according to the shape of the tumor tissue, so that each radioactive particle can be released more evenly in various places in the tumor tissue, and after the elastic sheet releases and ejects the radioactive particles, the radioactive particles will slightly deviate from the path of the puncture needle, and the spacing between each radioactive particle can be appropriately dispersed, which is beneficial to improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a radiation particle implantation device of the present invention;

[0020] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0021] Figure 3 This is a schematic structural diagram of a guide tube located at a control strip position in one embodiment of a radioactive particle implantation device of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a push chamber in one embodiment of a radiation particle implantation device of the present invention;

[0023] Figure 5 This is a schematic structural diagram of a guide tube located at a semi-cylindrical ferrule position in one embodiment of a radioactive particle implantation device of the present invention;

[0024] Figure 6 for Figure 5 A cross-sectional view of a side structural schematic diagram of ;

[0025] Reference numerals:

[0026] Guide tube 1, connecting piece 11, rotating column 12, first gear 121, push rod 13, rack 14, push bin 15, push channel groove 151, lower opening 152, upper opening 153, placement opening 154, push block 155, second gear 16, rotating handle 161, second channel 17, control strip 18;

[0027] Semi-cylindrical ferrule 2, elastic clip strip 21, receiving groove 22, first channel 23, limiting piece 24;

[0028] Pushing structure 3, elastic sheet 31, pulling rope 32. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the invention is not limited by the specific implementation disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] like Figure 1-6 As shown, a radioactive particle implantation device provided in this embodiment includes a guide tube 1, a semi-cylindrical sleeve 2 and a push structure 3.

[0033] See also Figure 1 The inner diameter of the guide tube 1 is adapted to the diameter of the radiation particles. A connecting piece 11 is provided at the edge of one end of the guide tube 1. A rotating column 12 is rotatably installed on the connecting piece 11. One end of the rotating column 12 is located outside the connecting piece 11 and is provided with a first gear 121. A push rod 13 is movably inserted at the other end of the guide tube 1. The push rod 13 can push the radiation particles in the guide tube 1. A rack 14 meshing with the first gear 121 is slidably installed on the outer side of the guide tube 1. Specifically, a slide rail extending along the axial direction thereof is provided on the outer wall of the guide tube 1. The rack 14 is slidably installed on the slide rail. The first gear 121 can be driven to rotate by sliding the rack 14 back and forth.

[0034] See also Figure 1 , Figure 5 and Figure 6 The semi-cylindrical ferrule 2 is installed at the other end of the rotating column 12 and can be coaxial with the guide tube 1, so that the push rod 13 can push the radioactive particles into the semi-cylindrical ferrule 2. The semi-cylindrical ferrule 2 is semi-cylindrical, and its inner diameter size is adapted to the diameter of the radioactive particles. Elastic clips 21 are respectively provided on the two side edges of the semi-cylindrical ferrule 2. The elastic clips 21 are slightly inclined toward the inner side of the semi-cylindrical ferrule 2. The elastic clips 21 can be made of elastic plastic or elastic rubber to temporarily clamp the radioactive particles pushed into the semi-cylindrical ferrule 2. A receiving groove 22 is provided on the inner side of the semi-cylindrical ferrule 2.

[0035] Preferably, a limit plate 24 is provided at one end of the semi-cylindrical ferrule 2 away from the guide tube 1, and the distance between the two ends of the semi-cylindrical ferrule 2 is adapted to the length of the radioactive particles, which is conducive to limiting the movement into the semi-cylindrical ferrule 2 and conveniently determining the position of the radioactive particles.

[0036] The pushing structure 3 includes an elastic sheet 31 and a pulling rope 32. The elastic sheet 31 can be made of an elastic metal sheet or an elastic plastic sheet. The two elastic sheets 31 are respectively located in the accommodating groove 22. One end of the two elastic sheets 31 is fixedly connected to the end of the accommodating groove 22 close to the guide tube 1, and the other end is slidingly connected to the inner walls of the two sides of the accommodating groove 22. The elastic sheet 31 can make its two ends bounce away from each other under the action of its own elastic force, and the middle parts of the two elastic sheets 31 are arched outward from the accommodating groove 22. One end of the pulling rope 32 is fixedly connected between the other ends of the two elastic sheets 31. When the pulling rope 32 pulls the two ends of the elastic sheet 31 closer, the elastic sheet 31 will arch outward significantly with the arched middle part as the bending point.

[0037] When in use, the radioactive particles are placed in the guide tube 1, and the semi-cylindrical ferrule 2 is rotated to a position coaxial with the guide tube 1, and then the guide tube 1 is inserted into the constructed puncture needle with the semi-cylindrical ferrule 2 as the insertion end. After reaching the designated position, the radioactive particles are pushed from the guide tube 1 to the semi-cylindrical ferrule 2 by the push rod 13, and the elastic clamping strip 21 clamps the radioactive particles in the semi-cylindrical ferrule 2, and then the first gear 121 is driven by the moving rack 14 to drive the semi-cylindrical ferrule 2 to rotate, and the guide tube 1 is axially rotated to change the placement angle of the radioactive particles. After adjustment, the guide tube 1 is moved to the desired position. By pulling the pulling rope 32 outward, the pulling rope 32 drives the two ends of the elastic sheet 31 to contract, and the middle part of the elastic sheet 31 will be greatly arched outward and push the radioactive particles out of the semi-cylindrical sleeve 2, so that the radioactive particles can be released at a certain angle in the tumor tissue. The release angle and position of the radioactive particles can be adjusted according to the shape of the tumor tissue, so that each radioactive particle can be released more evenly in various parts of the tumor tissue. After the elastic sheet 31 releases the radioactive particles, the radioactive particles will slightly deviate from the path of the puncture needle, which can appropriately disperse the distance between each radioactive particle, which is beneficial to improving the treatment effect.

[0038] In order to facilitate the implantation of multiple radioactive particles at the same puncture needle position, Figure 1 and Figure 4As shown, in one embodiment, a pushing bin 15 is provided at one end of the guide tube 1 away from the connecting piece 11, the width of the pushing bin 15 is adapted to the diameter of the radioactive particles and the height is adapted to the length of the radioactive particles, a pushing channel groove 151 is provided on the inner wall of one side of the pushing bin 15, and the radioactive particles can slide into the pushing channel groove 151, a lower opening 152 connected to the guide tube 1 is provided at the bottom end of the pushing channel groove 151, and an upper opening 153 for inserting the push rod 13 is provided at the top end, a placement opening 154 is provided on the side of the pushing bin 15 away from the pushing channel groove 151, and a pushing block 155 is slidably inserted into the placement opening 154. During specific use, the radioactive particles can be placed into the pushing bin 15 from the placement port 154, and then pushed to the pushing channel groove 151 by the pushing block 155. Then, the radioactive particles are pushed into the guide tube 1 through the lower opening 152 by the pushing rod 13. According to actual needs, multiple radioactive particles can be stuffed into the pushing bin 15 in sequence at one time, and each radioactive particle can be pushed into the guide tube 1 in batches one by one.

[0039] like Figure 1-Figure 3 As shown, in one embodiment, a second gear 16 meshing with the rack 14 is rotatably installed on the outer side of one end of the guide tube 1 away from the connecting plate 11, and a rotating handle 161 is provided on the outer side of the second gear 16. The movement of the rack 14 can be controlled by rotating the rotating handle 161, thereby facilitating the control of the rotation angle of the semi-cylindrical sleeve 2.

[0040] Preferably, the second gear 16 is of the same model as the first gear 121, so that the second gear 16 can drive the first gear 121 to rotate the same angle through the rack 14, and the two ends of the rotating handle 161 are oriented in the same direction as the two ends of the semi-cylindrical ferrule 2, and the rotating handle 161 can rotate synchronously with the semi-cylindrical ferrule 2, so that the rotation angle of the semi-cylindrical ferrule 2 can be clearly grasped from the outside through the angle state of the rotating handle 161.

[0041] like Figure 1-Figure 3 as well as Figure 5 and Figure 6 As shown, preferably, a first channel 23 is opened inside the side wall of the semi-cylindrical ferrule 2, one end of the first channel 23 is connected to the accommodating groove 22 and the other end extends to the end of the semi-cylindrical ferrule 2 close to the guide tube 1, and a second channel 17 is opened inside the side wall of the guide tube 1, one end of the second channel 17 is located at the end of the guide tube 1 close to the first channel 23 and the other end extends to the outside of the guide tube 1, and the other end of the pulling rope 32 passes through the first channel 23 and the second channel 17 in sequence and is located on the outside of the guide tube 1, and the first channel 23 and the second channel 17 provide internal guidance for the pulling rope 32 to prevent the surrounding tissue from being scratched when the pulling rope 32 is pulled.

[0042] like Figure 1-Figure 3As shown, further, a control strip 18 is slidably installed on the outer side of the guide tube 1 between the second gear 16 and the opening of the second channel 17 on the outer side of the guide tube 1. The control strip 18 is provided with a latching tooth at one end facing the second gear 16. The sliding control strip 18 can make it press against the second gear 16 or block the opening of the second channel 17 on the outer side of the guide tube 1. When adjusting the rotation angle of the semi-cylindrical ferrule 2, it is necessary to slide the control strip 18 to block the opening of the second channel 17 on the outer side of the guide tube 1. At this time, the pulling rope 32 at the opening of the second channel 17 is stuck, which can prevent the release of the radioactive particles before the angle adjustment of the radioactive particles is completed. Similarly, when it is necessary to release the radioactive particles, it is necessary to slide the control strip 18 to lock the second gear 16. At this time, the second gear 16 cannot be rotated, thereby preventing the radioactive particles from rotating and shifting during the release process.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A radioactive particle implantation device, It is characterized in that include: The guide tube has a connecting piece at one end edge, a rotating column is rotatably mounted on the connecting piece, one end of the rotating column is located outside the connecting piece and is provided with a first gear, a push rod is movably inserted at the other end of the guide tube, and a rack meshing with the first gear is slidably mounted on the outside of the guide tube; A semi-cylindrical ferrule is installed at the other end of the rotating column and can be coaxial with the guide tube. The edges of both sides of the semi-cylindrical ferrule are respectively provided with elastic clips, and the inner side of the semi-cylindrical ferrule is provided with a receiving groove; The pushing structure includes an elastic sheet and a pulling rope. The two elastic sheets are respectively located in the receiving grooves. One end of the two elastic sheets is fixedly connected to one end of the receiving groove close to the guide tube, and the other end is slidingly connected to the inner walls on both sides of the receiving groove. The middle parts of the two elastic sheets are arched outward from the receiving groove, and one end of the pulling rope is fixedly connected between the other ends of the two elastic sheets.

2. A radiation particle implantation device according to claim 1, It is characterized in that A pushing bin is provided at one end of the guide tube away from the connecting plate, a pushing channel groove is provided on an inner wall of one side of the pushing bin, a lower opening connected to the guide tube is provided at the bottom end of the pushing channel groove, and an upper opening for inserting a push rod is provided at the top end, a placement opening is provided on one side of the pushing bin away from the pushing channel groove, and a pushing block is slidably inserted in the placement opening.

3. A radiation particle implantation device according to claim 1, It is characterized in that A second gear meshing with the rack is rotatably mounted on the outer side of one end of the guide tube away from the connecting piece, and a rotating handle is arranged on the outer side of the second gear.

4. A radiation particle implantation device according to claim 3, It is characterized in that The two ends of the rotating handle are oriented in the same direction as the two ends of the semi-cylindrical ferrule.

5. A radiation particle implantation device according to claim 3, It is characterized in that A first channel is opened inside the side wall of the semi-cylindrical ferrule, one end of the first channel is connected to the accommodating groove and the other end extends to the end of the semi-cylindrical ferrule close to the guide tube, a second channel is opened inside the side wall of the guide tube, one end of the second channel is located at the end of the guide tube close to the first channel and the other end extends to the outside of the guide tube, and the other end of the pulling rope passes through the first channel and the second channel in sequence and is located outside the guide tube.

6. A radiation particle implantation device according to claim 5, It is characterized in that A control strip is slidably mounted on the outer side of the guide tube between the second gear and the second channel opening on the outer side of the guide tube. Sliding the control strip can make it press against the second gear or cover the second channel opening on the outer side of the guide tube.

7. The radiation particle implantation device according to claim 1, It is characterized in that A limiting piece is arranged at one end of the semi-cylindrical ferrule away from the guide tube.

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