An iodine-125 particle implantation device
A technology for implanting devices and particles, which is applied in the field of medical devices to achieve the effects of convenient operation, pain reduction and high stability
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Embodiment 1
[0029] An iodine-125 particle implant device, such as Figure 1~4 As shown, including a particle storage tube 1, a delivery catheter 2, a guide wire 3 and a separation guide wire 4, the outer diameters of the particle storage tube 1 and the delivery catheter 2 are both 4F (about 1.3 mm), and a number of iodine-125 particles 8 ( 0.8mm in diameter and 4.5mm in length) can be stored in the particle storage tube 1 in a single row, that is, the diameter of the iodine-125 particle 8 basically matches the inner diameter of the particle storage tube 1. In actual use, the number of iodine-125 particles 8 and the particle The length of the storage tube 1 is determined according to the length of the obstruction of the lumen of the human body. One end of the particle storage tube 1 is closed and the end is provided with a small hole 11. The small hole 11 is coaxial with the particle storage tube 1 and guides The guide wire 3 can freely pass through the small hole 11. When in use, the guid...
Embodiment 2
[0035] According to Embodiment 1, this embodiment provides a method for implanting iodine-125 particles using the above-mentioned implant device, which specifically includes the following steps:
[0036] a. First, the puncture needle is percutaneously punctured into the lumen of the human body, such as the portal vein, etc., and then the short catheter sheath of 4F is introduced. The short sheath of the catheter does not pass through the obstruction of the lumen of the human body;
[0037] b. With the cooperation of the 4F catheter short sheath, the guide wire passes through the obstruction of the human lumen;
[0038] c. Implant the assembly of the particle storage tube and the delivery catheter in the human body lumen along the guide wire, and the catheter seat of the delivery catheter is always outside the body, which is easy to operate and can accurately place the particle storage tube in the human body lumen the obstruction;
[0039] d. After step c, the particle storage...
Embodiment 3
[0043] This embodiment is basically the same as Embodiment 2, the difference is: according to the width of the obstruction of the human body lumen, for example, when implanting in the biliary tract, the particle storage tube needs to be used in conjunction with the stent, specifically, when implanting the particle At the same time as the assembly of the storage tube and the delivery catheter, a stent for fixing the particle storage tube is implanted. The stent and the particle storage tube are located side by side at the obstruction of the biliary tract. The stent can be made of a shape memory alloy, such as a titanium-nickel alloy. Cylindrical mesh, the stent restores its shape after release, so that the particle storage tube is fixed at the obstruction of the human body lumen, that is, the particle storage tube is fixed between the stent and the wall of the bile duct, and then the above steps d, e and The operation of step f finally completes the entire implantation process. ...
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