Angle guide sheath and radioactive particle delivery system
A technology of radioactive particle and delivery system, applied in the field of angle guide sheath and radioactive particle delivery system, achieves the effects of convenient release operation, low production cost and improved effect
Inactive Publication Date: 2019-12-20
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the shortcomings of existing particle delivery facilities, provide an angle guide sheath and radioactive particle delivery system, reduce the difficulty of radioactive particle implantation in the interventional diagnosis and treatment process, and improve the effect of internal radiation therapy
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Embodiment Construction
[0018] like figure 1 and figure 2 As shown, the angular guide sheath 20 of the present invention includes a shell, and a guide sheath puncture part 203 is formed at the front end of the shell, and a delivery needle channel 201 is provided in the axial direction. The channel opening 202 is located on the side wall below the guide sheath puncture part 203, and the delivery needle channel 201 is divided into a straight section 201a and an arc section 201b. Balls 204 or rollers are provided on the lower wall of the channel where the arc section enters and / or the upper wall of the channel where the arc section exits. The delivery needle 10 takes the roller or ball 204 as the fulcrum at the point where the angle change needs to occur when entering and exiting the arc section channel, to strengthen the angle forming of the delivery needle 10, and to change the sliding friction between the delivery needle 10 and the wall of the angle guide sheath 20 into rolling Friction, to a certa...
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The invention discloses an angle guide sheath and a radioactive particle delivery system. The angle guide sheath comprises a shell, the front end of the shell forms a guide sheath puncture part and isaxially provided with a delivery needle channel, the channel opening is arranged in the side wall below the puncture part, the delivery needle channel is divided into a straight section and an arc section, and balls or rollers are arranged on the lower wall of the channel at the entrance of the arc section and / or the upper wall of the channel at the exit of the arc section. The radioactive particle delivery system comprises an outer layer guide needle, an angle guide sheath and a delivery needle, wherein the outer layer guide needle is provided with a tube for accommodating the angle guide sheath and a front end puncture part; the angle guide sheath is arranged in the tube of the outer layer guide needle, the angle guide sheath is provided with the delivery needle channel, and the opening of the delivery needle channel is positioned on the side wall; and the delivery needle enters the angle guide sheath and unloads the carried radioactive particles after passing through the opening of the delivery needle channel. The system can reduce the implantation difficulty of radioactive particles in the interventional diagnosis and treatment process and improve the effect of internal radiotherapy.
Description
technical field [0001] The invention relates to the field of medical devices, and relates to an angle guide sheath for a delivery needle and a radioactive particle delivery system. Background technique [0002] At present, interventional diagnosis and treatment technology plays a huge role in the treatment of malignant tumors. Internal radiation therapy for tumors is widely used clinically and has achieved good therapeutic effects. Among them, radioactive particles with iodine [I-125] as the seed source are representative . Chinese patent CN208591107U discloses a delivery needle carrying radioactive particles, which can be used together with an angled puncture needle to achieve multi-angle, multi-plane conformal brachytherapy for tumor tissue. However, when the delivery needle passes through the arc section of the angled puncture needle channel, the resistance is large, and it is laborious to push the delivery needle, which affects the smoothness of the entire treatment ope...
Claims
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IPC IPC(8): A61N5/10
CPCA61N5/1007A61N2005/1012
Inventor 岳述福
Owner 于群