Source application clamp loaded with radioactive particles and loading device of source application clamp

Abstract

The invention relates to the technical field of medical instruments, in particular to a radioactive particle-loaded source application clamp and a loading device thereof.The source application clamp comprises a first clamping arm and a second clamping arm, a first fixing hook and a second fixing hook are arranged at the two ends of the first clamping arm respectively, and a particle channel is formed in the second clamping arm to load radioactive particles; a clamping opening and a clamping head are arranged at the two ends of the clamping arm respectively, the clamping opening is matched with the first fixing hook, the clamping head is matched with the second fixing hook, and the tail ends of the two clamping arms are connected through an elastic bent hinge part; the loading device is used in cooperation with a source application clamp and comprises a first fixing plate, a second fixing plate, a filling opening, a filling channel and a containing groove, the source application clamp is conveniently filled with particles, the source application clamp and radioactive particles are combined, close-range irradiation treatment can be conducted on tumors while tissue is closed through the source application clamp, and the source application clamp is convenient to use. Therefore, the treatment effect is improved, milder treatment choices are provided for patients, and the source application clamp can be conveniently filled with radioactive particles through the loading device.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a source clamp carrying radioactive particles and a loading device thereof. Background Art

[0002] The source clamp, also called a disposable tissue closure clamp, is used for ligation and anastomosis of blood vessels and tissues in the body during surgical operations. It has important application value in tumor treatment, especially in the prevention of postoperative bleeding in endoscopic submucosal dissection (ESD) for early gastric cancer and the treatment of refractory non-varicose gastrointestinal bleeding. By effectively clamping bleeding tissue, the source clamp can significantly reduce the risk of postoperative bleeding and improve the treatment effect. Radioactive particle interventional therapy is an advanced tumor treatment method. By implanting micro-radioactive sources (such as radioactive iodine 125 particles) into tumor tissue or tissue infiltrated by tumor cells, precise treatment of tumors can be achieved.

[0003] However, the existing tissue closure clamps only play a closing role and cannot further perform close-range irradiation therapy on tumor cells. In addition, the closure clamps may break due to improper operation or product quality problems during surgery, and cannot play a hemostatic role, and may even cause accidental damage or tearing of surrounding healthy tissues, thereby prolonging the operation time and increasing surgical risks.

[0004] Therefore, it is urgent to design a source clamp carrying radioactive particles and a loading device thereof, which can not only quickly, safely and reliably close the wound tissue, but also achieve close-range treatment of tumor cells at the wound to solve the above problems by combining the radioactive particles with the source clamp. In addition, a loading device is also provided for filling the source clamp with radioactive particles. Summary of the invention

[0005] The purpose of the present invention is to provide a source clamp carrying radioactive particles and a loading device thereof, so as to solve the problems in the prior art that the source clamp cannot perform close-range irradiation treatment on tumor cells and the clamp arms cannot be tightly closed.

[0006] To achieve this purpose, the present invention adopts the following scheme:

[0007] A source clamp carrying radioactive particles and a loading device thereof, comprising a first clamp arm and a second clamp arm, wherein the first clamp arm is provided with a first fixing hook and a second fixing hook at both ends respectively, a particle channel is provided inside the second clamp arm, and the particle channel carries radioactive particles, and a bayonet and a snap-fit ​​head are provided at both ends of the second clamp arm respectively, the bayonet is matched with the first fixing hook, and the snap-fit ​​head is matched with the second fixing hook, and the tail ends of the first clamp arm and the second clamp arm are connected to each other through an elastic curved hinge portion.

[0008] As an optional solution, the first clamp arm is arc-shaped, the first fixing hook and the second fixing hook are "C"-shaped, and a semi-cylindrical clamping block is provided on the inner surface of the end of the first fixing hook.

[0009] As an optional solution, a semi-cylindrical groove is provided on the inner side of the bayonet, the groove is coaxial with the particle channel and is interconnected, and the groove fits with the block.

[0010] As an optional solution, the second clamp arm is a straight arm to facilitate the opening of a particle channel, and the inner side of the second clamp arm is raised with a certain arc to match the inner side of the first clamp arm.

[0011] Alternatively, the radioactive particles are iodine-125 particles or palladium-103 particles.

[0012] As an optional solution, the first clamp arm, the second clamp arm and the curved hinge portion are integrally formed using polytetrafluoroethylene material.

[0013] As an optional solution, outer surfaces of the first clamping arm and the second clamping arm are both fixedly connected to the limiting column.

[0014] A loading device is used to fill a source clip carrying radioactive particles with radioactive particles, comprising a first fixing plate and a second fixing plate that are overlapped and fixed, the first fixing plate and the second fixing plate are overlapped to form a filling port, a filling channel and a placement slot, the filling port is coaxial and connected to one end of the filling channel, the other end of the filling channel is connected to the placement slot, and the source clip can be embedded in the placement slot.

[0015] As an optional solution, the filling port is thick at the top and thin at the bottom.

[0016] Furthermore, the source clamp is placed in the loading device, and the filling channel is coaxial with the groove and fits with it.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a source clamp for carrying radioactive particles and a loading device thereof. By opening a particle channel inside the second clamp arm, the function of carrying radioactive particles is realized. Its core advantage is that the radioactive particles can be directly and accurately placed near the tumor cells, effectively improving the treatment efficiency and reducing the damage to healthy tissues. The closing mechanism of the source clamp ensures that the clamp arm will not slide after closing through the cooperation of the first fixing hook and the bayonet, the second fixing hook and the locking head, and the clamp block and the groove, thereby enhancing the accuracy and stability of the treatment. Secondly, even in extreme cases such as the breaking of the bending hinge part, the source clamp can still maintain a self-closing state, ensuring the continuity of the treatment process and the safety of the patient. Taking into account the accuracy, stability and safety of the treatment, the source clamp of the present invention is expected to become an important tool in the field of tumor treatment, bringing more hope of cure to patients. In addition, the loading device cooperates with the source clamp to realize the rapid filling of the source clamp with radioactive particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a source clamp for carrying radioactive particles provided by the present invention;

[0020] Figure 2 It is a schematic structural diagram of the source clamp in the state of carrying radioactive particles of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the source clamp of the present invention in a closed state;

[0022] Figure 4 It is a partial enlarged view of the closed state of the source clamp of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the source clamp of the present invention in a closed and broken state;

[0024] Figure 6 It is a structural schematic diagram of the first fixing plate of the loading device of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the second fixing plate of the loading device of the present invention;

[0026] Figure 8 It is an exploded view of a source clamp carrying radioactive particles and a loading device thereof according to the present invention.

[0027] In the figure:

[0028] 1. First clamp arm, 2. Second clamp arm, 3. First fixing hook, 31. Block, 4. Second fixing hook, 5. Particle channel, 6. Radioactive particles, 7. Bayonet, 71. Groove, 8. Engaging head, 9. Bent hinge portion, 10. Limiting column, 11. First fixing plate, 12. Filling port, 13. Filling channel, 14. Placement slot, 15. Second fixing plate. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It is also necessary to explain that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all.

[0030] Some directional words are defined in the present invention. Unless otherwise specified, the directional words used, such as "up", "down", "left", "right", "inside" and "outside", are used to facilitate understanding and therefore do not constitute a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1 As shown, the present invention provides a source clamp for carrying radioactive particles and a loading device thereof, comprising a first clamp arm 1 and a second clamp arm 2, the tail ends of the first clamp arm 1 and the second clamp arm 2 are interconnected by an elastic curved hinge portion 9, allowing the clamp arms to be flexibly opened and closed to adapt to different treatment areas, and the clamp is integrally formed of polytetrafluoroethylene material; polytetrafluoroethylene has excellent biocompatibility, chemical resistance, non-stickiness and low friction coefficient, so that it has excellent tolerance to a variety of chemical substances, has no damage to human physiology, and has no adverse reactions when implanted in the body. At the same time, its low friction coefficient helps to smoothly carry out surgical operations and reduce tissue damage.

[0033] like Figure 2 As shown, the first clamp arm 1 adopts an arc-shaped design to adapt to the natural curve of the patient's body and ensure that the source clamp can fit the treatment area tightly. This design not only improves the patient's comfort, but also helps the stability of the source clamp during the treatment process. A first fixing hook 3 and a second fixing hook 4 in a "C" shape are respectively provided at both ends of the first clamp arm 1, wherein a semi-cylindrical block 31 is convexly provided on the inner surface of the end of the first fixing hook; a particle channel 5 is provided inside the second clamp arm 2 for loading radioactive particles 6. Since the second clamp arm 2 is a straight arm design, it is convenient to open the particle channel 5 to ensure that the radioactive particles 6 can be loaded smoothly; a bayonet 7 and a snap-fit ​​head 8 are respectively provided at both ends of the second clamp arm 2, wherein a semi-cylindrical groove 71 is provided on the inner side of the bayonet 7, and the groove 71 is coaxial with the particle channel 5 and connected to each other.

[0034] like Figure 3-4 As shown, when the source clamp is in a closed state, the bayonet 7 is matched with the first clamp fixing hook 3, the block clamp 31 is inserted into the groove, and the clamp head 8 is matched with the second fixing hook 4, thereby ensuring that the source clamp completely closes the wound and is firmly fixed in the treatment area; due to the design of the semi-cylindrical clamp block 31 and the groove 71, it helps to provide additional fixing force for the source clamp, ensuring that the clamp arm will not open accidentally, while avoiding misalignment between the clamp arms, and ensuring stability during treatment. In addition, the inner side of the second clamp arm 2 is raised with a certain arc to match the inner side of the first clamp arm 1. This design helps to improve the degree of fit between the two clamp arms when closed, thereby providing a better closing effect during treatment.

[0035] like Figure 5 As shown, further, even when the bent hinge portion 9 breaks, the bayonet 7 and the first fixing hook 3, the locking head 8 and the second fixing hook 4 remain in a self-locking state, and the first clamp arm 1 and the second clamp arm 2 of the source clamp are still in a stable closed state, which greatly improves the use effect of the source clamp. Since the block 31 cooperates with the groove 71 to limit the clamp arm, the first clamp arm 1 and the second clamp arm 2 will not slide relative to each other to cause damage to the surrounding tissues and will not affect the continuation of the operation.

[0036] Radioactive particles 6 are iodine-125 particles. Iodine-125 particles mainly release continuous low-dose gamma rays in the tumor tissue to destroy the DNA of tumor cells. Since its radiation energy is mainly concentrated in the tumor tissue, the damage to the surrounding normal tissue is relatively small, thereby achieving the treatment purpose.

[0037] The outer surfaces of the first clamp arm and the second clamp arm are both fixedly connected to the limiting column, and the limiting column cooperates with the positioning notch on the clamping forceps to achieve the closure of the two clamp arms of the source clamp.

[0038] like Figure 6-8 As shown, a loading device is specially designed for filling the source clamp with radioactive particles 6, including a first fixing plate 11 and a second fixing plate 15. The two fixing plates are assembled together by overlapping and fixing to form the key structure of the device. A filling port, a filling channel and a placement groove are respectively provided on the two surfaces where the first fixing plate 11 and the second fixing plate 15 are in contact. The first fixing plate 11 and the second fixing plate 15 are overlapped to form a complete filling port, a filling channel and a placement groove. Among them, the filling port 12 is the entrance of the operation, which is used to introduce the radioactive particles 6 into the device. The filling port 12 is thick at the top and thin at the bottom, and is coaxial and connected with the filling channel 13, which means that the radioactive particles 6 can smoothly enter the filling channel 13 through this port; the other end of the filling channel 13 is connected with the placement groove 14, which can ensure that the radioactive particles 6 reach the placement groove 14; the placement groove 14 is where the source clamp is embedded and placed, and its design can adapt to the size and shape of the source clamp to ensure that the source clamp can be stably embedded therein. After the source clamp is embedded in the placement groove 14, the filling channel 13 is coaxial and fits with the groove 71, and the radioactive particles 6 passing through the filling channel 13 enter the groove 71 of the source clamp, and then further enter the particle channel 5 of the source clamp. Such a design makes the loading process of radioactive particles more accurate and safe, and reduces the errors and risks that may occur during the operation.

[0039] In general, the design of this loading device takes into account the ease and safety of operation. Through precise structural design, it ensures that radioactive particles can be safely and effectively loaded into the source clamp, providing reliable technical support for close-range irradiation therapy of tumors.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods thereof. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A source clamp for carrying radioactive particles, It is characterized in that The invention comprises a first clamp arm (1) and a second clamp arm (2), wherein the first clamp arm (1) is provided with a first fixing hook (3) and a second fixing hook (4) at both ends, the second clamp arm (2) is provided with a particle channel (5) inside, the particle channel (5) carries radioactive particles (6), the second clamp arm (2) is provided with a bayonet (7) and a snap-fit ​​head (8) at both ends, the bayonet (7) is matched with the first fixing hook (3), and the snap-fit ​​head (8) is matched with the second fixing hook (4), and the tail ends of the first clamp arm (1) and the second clamp arm (2) are connected to each other via an elastic curved hinge portion (9).

2. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that The first clamp arm (1) is arc-shaped, the first fixing hook (3) and the second fixing hook (4) are "C"-shaped, and a semi-cylindrical clamping block (31) is provided on the inner surface of the end of the first fixing hook (3).

3. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that A semi-cylindrical groove (71) is provided on the inner side of the bayonet (7); the groove (71) and the particle channel (5) are coaxial and communicate with each other; and the groove (71) fits with the block (31).

4. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that The second clamp arm (2) is a straight arm, which is convenient for opening the particle channel (5); the inner side of the second clamp arm (2) is raised at a certain arc to match the inner side of the first clamp arm (1).

5. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that The radioactive particles (6) are iodine-125 particles or palladium-103 particles.

6. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that The first clamp arm (1), the second clamp arm (2) and the curved hinge portion (9) are integrally formed using polytetrafluoroethylene material.

7. A source clamp for carrying radioactive particles according to claim 1, It is characterized in that The outer surfaces of the first clamp arm (1) and the second clamp arm (2) are both fixedly connected to a limiting column (10).

8. A loading device for filling a source clamp carrying radioactive particles according to any one of claims 1 to 7 with the radioactive particles (6). It is characterized in that The invention comprises a first fixing plate (11) and a second fixing plate (15) which are overlapped and fixed, wherein the first fixing plate (11) and the second fixing plate (15) are overlapped to form a filling port (12), a filling channel (13) and a placement groove (14), wherein the filling port (12) is coaxial with and connected to one end of the filling channel (13), and the other end of the filling channel (13) is connected to the placement groove (14), and the source clamp can be embedded in the placement groove (14).

9. A loading device according to claim 8, It is characterized in that The filling port (12) is in a shape of being thick at the top and thin at the bottom.

10. A loading device according to claim 8, It is characterized in that The source clamp is placed in the loading device, and the filling channel (13) is coaxial with and fits with the groove (71).

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