Radioactive particle introduction device

Abstract

The utility model discloses a radioactive particle leading-in device which improves convenience and safety in use. The radioactive particle introduction device comprises a radioactive particle gun, a radioactive particle strip and a conduit; the radioactive particle gun comprises a gun body, a firing pin and a spring; a push-and-pull channel and a bullet channel communicated with the radial direction of the push-and-pull channel are arranged in the axial direction of the gun body, and a grabbing ring for fingers to grab is arranged on the circumferential surface of the gun body; the first end of the firing pin penetrates into the push-pull channel from the first end of the push-pull channel and is movably matched in the push-pull channel, and the second end of the firing pin is located outside the gun body and provided with a push plate. The spring is arranged between the gun body and the firing pin so as to achieve resetting of the firing pin. The first end of the radioactive particle strip penetrates through the guide pipe, the second end of the radioactive particle strip is provided with a connector in threaded connection with the gun body, and the connector is in butt joint with the second end of the push-pull channel; and a conical guide head is arranged at the end part of the guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a radioactive particle introduction device. Background Art

[0002] The full name of particle implantation is "radioactive particle implantation therapy technology", which is a treatment method that implants a radiation source into the tumor to destroy the tumor.

[0003] In the prior art, radioactive particles are implanted by loading a magazine with radioactive particle bullets onto a radioactive particle gun, and then using a firing pin to push the bullet out of the radioactive particle gun and into a catheter for implantation. However, the existing radioactive particle gun requires one hand to hold the gun body and the other hand to push and pull the firing pin, which means that both hands are required for operation, which is inconvenient to operate and affects the efficiency of the operation. At the same time, the connection structure between the radioactive particle gun and the catheter is not stable enough, and there is a risk of radioactive particles falling out and causing leakage of the radiation source. Utility Model Content

[0004] The utility model aims to provide a radioactive particle introduction device to solve the problems existing in the prior art and improve the convenience and safety during use.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A radioactive particle introduction device comprises a radioactive particle gun, a radioactive particle strip and a catheter; the radioactive particle gun comprises a gun body, a firing pin and a spring; the gun body is provided with a push-pull channel and a bullet channel radially connected to the push-pull channel in the axial direction, and the circumferential surface of the gun body is provided with a gripping ring for fingers to grasp; the first end of the firing pin penetrates into the push-pull channel from the first end of the push-pull channel and movably fits in the push-pull channel, and the second end of the firing pin is located outside the gun body and is provided with a push plate; the spring is provided between the gun body and the firing pin to achieve the resetting of the firing pin; the first end of the radioactive particle strip is penetrated in the catheter, and the second end thereof is provided with a joint threadedly connected to the gun body, and the joint butts against the second end of the push-pull channel; the end of the catheter is provided with a conical guide head.

[0007] The upper and lower parts of the grab ring are respectively arranged at relative positions on the upper and lower surfaces of the gun body.

[0008] Preferably, a finger buckle position is provided in the grip ring, and one finger buckle position is provided above the gun body and three finger buckle positions are provided below the gun body.

[0009] A limiting ring is arranged in the push-pull channel, a baffle is arranged on the circumference of the striker, and a limiting plate is arranged at the first end of the push-pull channel; the striker passes through the limiting plate and makes the baffle located between the limiting ring and the limiting plate, and the two ends of the spring respectively abut against the limiting ring and the baffle.

[0010] A connecting channel with an internal thread is arranged in the joint, the connecting channel is coaxially arranged with the push-pull channel and is connected to the radioactive particle strip; and an external thread matching the internal thread is arranged at the end of the gun body.

[0011] Preferably, the end of the connecting channel is provided with a flared opening.

[0012] The guide head is made of elastic material.

[0013] The circumferential surface of the guide head is sleeved with a metal ring.

[0014] Preferably, the metal ring is fixed to the circumferential surface of the guide head by riveting.

[0015] After adopting the above technical solution, the utility model has the following technical effects:

[0016] The utility model provides a gripping ring on the surface of the gun body, which can facilitate the operator to grasp and fix the gun body with one hand, so that the push plate of the firing pin is against the palm, and the operator can push the firing pin by making an action of pointing fingers and putting hands together, thereby pushing the particle bullet in the push-pull channel out of the push-pull channel and into the radioactive particle strip, thereby achieving the purpose of one-hand operation and improving the convenience during operation; the radioactive particle strip and the gun body are connected in a threaded manner, which is convenient for manual docking, and the two are more firmly connected and will not be easily loosened, so that the risk of leakage of the radioactive source can be avoided and the safety during use can be improved; the guide head of the catheter has a reduced diameter and can be made of a material with a certain elasticity, which plays a role of fitting the guide wire, improves the conveying performance of the catheter, and prevents the radioactive particle strip from quickly detaching from the catheter and being washed away by the blood flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0018] Description of Figure Numbers:

[0019] 1- Radioactive particle gun;

[0020] 11-gun body; 111-push-pull channel; 1111-limiting ring; 112-bullet channel; 113-grasp ring; 1131-finger buckle position;

[0021] 12-striker; 121-push plate; 122-baffle;

[0022] 13-spring; 14-limiting piece;

[0023] 2-radioactive particle strip; 21-joint; 211-connecting channel; 2111-flaring;

[0024] 3-catheter; 31-guide head; 32-metal ring. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0026] refer to Figure 1 As shown, the utility model discloses a radioactive particle introduction device, comprising a radioactive particle gun 1, a radioactive particle strip 2 and a catheter 3;

[0027] The radioactive particle gun 1 comprises a gun body 11, a firing pin 12 and a spring 13; the gun body 11 is provided with a push-pull channel 111 in the axial direction, and a bullet channel 112 connected to the push-pull channel 111 in the radial direction, the bullet channel 112 is used to connect a bullet clip to input a particle bullet into the push-pull channel 111, and a grip ring 113 for fingers to grip is provided on the circumference of the gun body 11; the first end of the firing pin 12 penetrates into the push-pull channel 111 from the first end of the push-pull channel 111 and flexibly fits in the push-pull channel 111 to push the particle bullet out of the second end of the push-pull channel 111, and the second end of the firing pin 12 is located outside the gun body 11 and is provided with a push plate 121; the spring 13 is provided between the gun body 11 and the firing pin 12 to reset the firing pin 12, specifically to push the firing pin 12 away from the second end of the push-pull channel 111;

[0028] The first end of the radioactive particle strip 2 is inserted into the guide tube 3, and the second end thereof is provided with a joint 21 threadedly connected to the gun body 11, and the joint 21 is connected to the second end of the push-pull channel 111;

[0029] A conical guide head 31 is provided at the end of the catheter 3 so that the catheter 3 can enter the human body more easily.

[0030] Through the above scheme, the utility model provides a gripping ring 113 on the surface of the gun body 11, which can facilitate the operator to grasp and fix the gun body 11 with one hand, so that the push plate 121 of the firing pin 12 is against the palm, and the operator can push the firing pin 12 by making an action of pointing the fingers and putting the palms together, thereby pushing the particle bullet in the push-pull channel 111 out of the push-pull channel 111 and into the radioactive particle strip 2, so as to achieve the purpose of one-handed operation and improve the convenience during operation; the radioactive particle strip 2 and the gun body 11 are connected in a threaded manner, which is convenient for manual docking, and the two are more firmly connected and will not be easily loosened, which can avoid the risk of leakage of the radiation source and improve the safety during use; the guide head 31 of the catheter 3 has a reduced diameter and can be made of a material with a certain elasticity, which plays a role of fitting the guide wire, improves the transportation performance of the catheter 3, prevents the radioactive particle strip 2 from quickly detaching from the catheter 3, and prevents it from being washed away by the blood flow.

[0031] Specific embodiments of the present utility model are shown below.

[0032] The upper and lower parts of the grab ring 113 are respectively arranged at relative positions on the upper and lower surfaces of the gun body 11, so that a single hand has a force point at the upper and lower parts of the gun body 11, and the gun body 11 is more stable and not easy to shake after being grasped.

[0033] Furthermore, a finger buckle position 1131 is provided in the grab ring 113 , and one finger buckle position 1131 is provided on the top of the gun body 11 and three finger buckle positions 1131 are provided on the bottom.

[0034] A limiting ring 1111 is arranged in the above-mentioned push-pull channel 111, a baffle 122 is arranged on the circumference of the striker 12, and a limiting plate 14 is arranged at the first end of the push-pull channel 111; the striker 12 is passed through the limiting plate 14 and the baffle 122 is located between the limiting ring 1111 and the limiting plate 14, and the two ends of the spring 13 respectively abut the limiting ring 1111 and the baffle 122.

[0035] A connecting channel 211 with internal threads is provided in the joint 21 . The connecting channel 211 is coaxially arranged with the push-pull channel 111 and connected to the radioactive particle strip 2 . The end of the gun body 11 is provided with external threads matching the internal threads.

[0036] Furthermore, the end of the connecting channel 211 is provided with a flared opening 2111 so that the end of the gun body 11 can quickly enter the connecting channel 211, making the operation more convenient.

[0037] The guide head 31 is made of elastic material.

[0038] The circumference of the guide head 31 is sleeved with a metal ring 32, so that the position of the end of the catheter 3 in the human body can be observed by X-ray during the operation, which is convenient for adjustment and ensures that the position where the particles are finally released is accurate.

[0039] Furthermore, the metal ring 32 is fixed on the circumferential surface of the guide head 31 by riveting.

[0040] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. A radioactive particle introduction device, characterized in that: It includes a radioactive particle gun, a radioactive particle strip and a catheter; The radioactive particle gun comprises a gun body, a firing pin and a spring; the gun body is provided with a push-pull channel and a bullet channel radially connected to the push-pull channel in the axial direction, and the circumferential surface of the gun body is provided with a grip ring for fingers to grip; the first end of the firing pin penetrates into the push-pull channel from the first end of the push-pull channel and movably fits in the push-pull channel, and the second end of the firing pin is located outside the gun body and provided with a push plate; the spring is provided between the gun body and the firing pin to achieve the resetting of the firing pin; The first end of the radioactive particle strip is inserted into the guide tube, and the second end thereof is provided with a joint threadedly connected to the gun body, and the joint is butted against the second end of the push-pull channel; The end of the catheter is provided with a conical guide head.

2. The radioactive particle introduction device according to claim 1, characterized in that: The upper and lower parts of the grab ring are respectively arranged at relative positions on the upper and lower surfaces of the gun body.

3. The radioactive particle introduction device according to claim 2, characterized in that: A finger buckle position is arranged in the grab ring, and one finger buckle position is arranged above the gun body and three finger buckle positions are arranged below the gun body.

4. The radioactive particle introduction device according to claim 1, characterized in that: A limiting ring is arranged in the push-pull channel, a baffle is arranged on the circumference of the striker, and a limiting plate is arranged at the first end of the push-pull channel; the striker passes through the limiting plate and makes the baffle located between the limiting ring and the limiting plate, and the two ends of the spring respectively abut against the limiting ring and the baffle.

5. The radioactive particle introduction device according to claim 1, characterized in that: A connecting channel with an internal thread is arranged in the joint, the connecting channel is coaxially arranged with the push-pull channel and is connected to the radioactive particle strip; and an external thread matching the internal thread is arranged at the end of the gun body.

6. The radioactive particle introduction device according to claim 5, characterized in that: The end of the connecting channel is provided with a flared opening.

7. The radioactive particle introduction device according to claim 1, characterized in that: The guide head is made of elastic material.

8. The radioactive particle introduction device according to claim 1, characterized in that: The circumferential surface of the guide head is sleeved with a metal ring.

9. The radioactive particle introduction device according to claim 8, characterized in that: The metal ring is fixed on the circumferential surface of the guide head by riveting.

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