Silicone stent carrying radioactive particles and implantation set assembly

Abstract

The invention relates to the field of medical instruments, in particular to a silicone stent carrying radioactive particles and an implantation set assembly, which comprises an outer sleeve, a push rod, an operating rod, a balloon, a guide wire and a silicone stent. The silicone stent is combined with the particles, so that the problems of poor breathing, insufficient blood supply and the like caused by trachea and bronchial stenosis caused by inflammatory granuloma, scars, tumors and other lesions of a patient are physically solved, radiation treatment is performed on the tumors of the patient, and the patient is fundamentally cured. Meanwhile, the problem that the healthy part of a patient is injured due to particle displacement and loss caused by the fact that a metal support cannot better fix the radiation particles is solved, operation is easy, and convenience and practicability are achieved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly, to a silicone stent carrying radioactive particles and an implant set assembly. Background Art

[0002] Tracheal and bronchial stenosis caused by lesions such as inflammatory granuloma, scar, and tumor often easily lead to problems such as poor respiration and insufficient blood supply, and in severe cases, it may endanger life. Airway stent implantation is an effective method for treating central airway stenosis. Airway stents include non-metallic stents, metallic stents, and hybrid stents. The silicone stent is one of the earliest developed airway stents, which has advantages such as low price and good biocompatibility, and is suitable for the treatment of stenosis and lesions in the lumen parts such as the trachea and bronchus. Through long-term clinical research, it is found that the long-term complications of silicone stents such as granulation hyperplasia and scar stenosis are significantly less than those of metallic stents, and it has advantages such as being easy to remove after long-term implantation. Therefore, silicone stents are recommended for the treatment of complex tracheal stenosis after intubation and tracheal stenosis after tracheotomy. However, silicone stents can also stimulate the proliferation of granulation tissue. For patients with malignant airway stenosis who are expected to have a relatively long survival time, there are also indications for implanting silicone stents. However, silicone stents cannot directly inhibit tumor growth, and the growth of tumor tissue may also cause obstruction at the upper and lower edges of the stent.

[0003] However, due to the large tension of the existing silicone stents, a specific pusher needs to be used during release, a rigid bronchoscope is adopted, and general anesthesia is also required for the patient to ensure ventilation function. The release is carried out blindly according to the measurement method, which is difficult to implant, has a high surgical difficulty, and also causes certain damage to the patient's airway. This makes the implantation of silicone stents have a greater risk, thus limiting the scope of application of silicone stents. Summary of the Invention

[0004] To solve the above problems, the purpose of the present invention is to provide a silicone stent carrying radioactive particles and an implant set assembly.

[0005] The purpose of the present invention is achieved by the following technical solutions: A silicone stent carrying radioactive particles and an implant set assembly provided by the present invention include: an outer sheath, a push rod, an operating rod, a balloon, a guide wire, and a silicone stent; The operating rod is slidably sleeved in the push rod and extends out of the front and rear ends of the push rod. The push rod is slidably sleeved in the outer sheath and extends out of the rear end of the outer sheath. A guide wire channel and a tracheal channel are opened in the operating rod. The guide wire is slidably arranged in the guide wire channel and extends out of the front and rear ends of the operating rod. The balloon and the silicone stent are sequentially arranged at the front end of the operating rod. The balloon is a non-compliant balloon, and the balloon is communicated with the tracheal channel; In the non-deployed state, the balloon and the silicone stent are accommodated inside the front end of the outer sleeve. The front end of the push rod is provided with a top platform for pushing the silicone stent and for the imaging ring. A number of particle bins are provided on the silicone stent, and radioactive particles are loaded in the particle bins.

[0006] Further, the silicone stent includes a straight cylindrical silicone stent and a Y-shaped silicone stent. The Y-shaped silicone stent includes a straight cylindrical silicone stent and two branch pipes connected to the straight cylindrical silicone stent.

[0007] Further, a number of rows of tapered pins and a number of rows of particle bins are axially distributed on the straight cylindrical silicone stent.

[0008] Further, a number of force-relieving holes are provided at the junction of the straight cylindrical silicone stent and the two branch pipes.

[0009] Further, a number of particle bins are axially distributed along the straight cylindrical silicone stent. The particle bin is a cylindrical cavity. One end of the cylindrical cavity is a particle placement channel, and the entrance of the particle placement channel is in a slope shape. The bottom of the slope is a particle stop platform for preventing the radioactive particles from slipping. Radioactive particles are loaded in the cylindrical cavity.

[0010] Further, the outer sleeve is a transparent tube with softness and support. Length scale lines are provided on the outer sleeve. An outer sleeve handle is provided at the rear end of the outer sleeve, and an outer sleeve handle stop is provided at the rear end of the outer sleeve handle.

[0011] Further, the push rod has a bending property and a pushing force. A relief space for receiving the back-drawing of the balloon is formed at the front end of the push rod. A push handle is provided at the rear end of the push rod, and push handle stops are provided at the front and rear ends of the push handle.

[0012] Further, the front end of the operating rod is a conical guiding head made of sleeved and integrated silicone material. The bottom of the cone of the guiding head is a cylinder, and the outer edge is equivalent to the inner diameter of the outer sleeve and can be inserted into the outer sleeve.

[0013] Further, an operating handle is provided at the rear end of the operating rod. An anti-slip edge is provided at the rear end of the operating handle. An airway interface communicating with the tracheal channel is provided on the operating handle, and a fin connecting the operating handle and the airway interface is provided on the operating handle.

[0014] Further, the guide wire is a metal guide wire. The front end of the guide wire is made of a soft material and is coated with a hydrophilic layer. The middle and the tail end have elasticity and support.

[0015] The silicone stent carrying radioactive particles and the implant set assembly of the present invention. The combination of the silicone stent and the particles physically solves the problems of poor breathing and insufficient blood supply caused by tracheal and bronchial stenosis due to lesions such as inflammatory granuloma, scar, and tumor in patients, and at the same time performs radiation therapy on the patient's tumor, fundamentally curing the patient. It also solves the problem that the metal stent cannot better fix the radioactive particles, resulting in particle displacement and loss, which may cause harm to the healthy parts of the patient. The operation is simple, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 is a sectional view of the overall structure of the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 2 is a sectional view of the overall structure of the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 3 is a sectional view of the internal structure of the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 4 is a view of the use state of the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 5 is a structural diagram of the straight tube type silicone stent in the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 6 is a structural diagram of the Y-shaped silicone stent in the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Figure 7 is a structural diagram of the particle bin in the silicone stent carrying radioactive particles and the implant set assembly of the present invention; Wherein the reference numerals are: 1. outer sheath; 2. top push rod; 3. operating rod; 4. balloon; 5. guide wire; 6. silicone stent; 7. top platform; 8. particle bin; 9. radioactive particle; 10. force relief hole; 11. particle placement channel; 12. particle stop; 13. outer sheath handle; 14. outer sheath handle stop; 15. relief space; 16. top push handle; 17. top push handle stop; 18. guiding head; 19. operating handle; 20. anti-slip edge; 21. airway interface; 22. fin; 23. main pulmonary duct; 24. pulmonary bronchus; 25. tapered nail. DETAILED DESCRIPTION OF THE INVENTION

[0017] To enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solution in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the scope of protection of the present invention.

[0018] As Figures 1 to 7 shown, based on the drawback that the silicone stent 6 only physically dredges the airway and cannot inhibit tumor growth, the present invention adds radioactive particles 9 to the silicone stent 6, which has a good therapeutic effect on tumors while physically dredging the airway. The present invention provides a method for loading the silicone stent 6 with a flexible bronchoscope and a delivery device for placement.

[0019] A silicone stent carrying iodine-125 radioactive particles and an implantation set assembly of the present invention includes a silicone stent delivery device and a silicone stent assembly carrying radioactive particles 9.

[0020] The silicone stent delivery device from the outside to the inside is an outer sleeve 1, a push rod 2, an operating rod 3, and a guide wire 5 in sequence. The outer sleeve 1 is a relatively soft and somewhat supportive transparent tube with a thin wall. Along the axial direction of the tube wall of the outer sleeve 1, length scale lines are printed and numbered identifiers are marked. The length scale lines start from the guiding head 18 and end at the outer sleeve handle 13. The length of the outer sleeve 1 is 26 cm - 43 cm, and the tube diameter is 8.5 mm - 14 mm. According to the different diameters and lengths of the human trachea, it can be subdivided into multiple models. The end of the outer sleeve 1 has an integrally sleeved outer sleeve handle 13, and the inner diameter of the outer sleeve handle 13 is the same as the inner diameter of the outer sleeve 1. The outer sleeve handle 13 is an 8 - 12 cm cylindrical shape, and the tube wall is thicker than that of the outer sleeve 1. The front 4 cm of the outer sleeve handle 13 to the connection with the outer sleeve 1 is a conical contraction transition, and the rear end of the outer sleeve handle 13 has an annular circular outer sleeve handle stop 14 larger than the outer diameter of the outer sleeve handle 13, which is convenient for doctors to hold and operate without slipping off.

[0021] Inside the outer sleeve 1 is the push rod 2. The push rod 2 is a cylindrical tube body that is axially through and has an outer diameter equivalent to the inner diameter of the outer sleeve 1. The push rod 2 can slide axially smoothly inside the outer sleeve 1. The tube wall of the push rod 2 is thicker, has a strong pushing force, and has a certain bendable characteristic. The inner diameter of the through tube body of the push rod 2 is smaller, and the length of the push rod 2 is slightly longer than that of the outer sleeve 1. At the front end of the push rod 2 to 2 cm from the rear end, there is a space 15 formed by an enlarged inner diameter of the push rod 2 as a space for the retraction of the receiving balloon 4.

[0022] At the front end of the push rod 2, there is an integrally formed metal push platform 7 inlaid. The metal push platform 7 can enable the push rod 2 to have a hard pushing platform when acting on the silicone stent 6, and can also be used as a developing ring to judge whether the placement position of the silicone stent 6 is appropriate. At the rear end of the push rod 2 is a push handle 16, and the push handle 16 is slightly thicker than the push rod 2. The length of the push handle 16 is 8-12 cm, and there are push handle stoppers 17 provided before and after the push handle 16, making it easier for doctors to hold and operate.

[0023] Inside the push rod 2 is an operating rod 3. The operating rod 3 is a relatively thin tube body that runs through the push rod 2 and the outer sleeve 1. Inside the tube body between the inner and outer walls of the operating rod 3, there is an air tube channel embedded. At the center of the tube body of the operating rod 3, there is also a guide wire 5 channel running through the operating rod 3. The front end of the operating rod 3 is a conical guiding head 18 made of silicone material that is sleeved integrally. The cone bottom of the conical guiding head 18 has a cylinder with a length of 3-5 mm, and the outer edge is equivalent to the inner diameter of the outer sleeve 1 and can be inserted into the outer sleeve 1. The maximum outer diameter of the cone part at the front end of the cylinder is the same as that of the outer sleeve 1. There is an outlet for the guide wire 5 channel at the cone tip part.

[0024] On the operating rod 3 behind the conical guiding head 18, there is a balloon 4 for supporting the silicone stent 6. It is a non-compliant balloon 4. On the operating rod 3 inside the balloon 4, there is an outlet for the air tube channel. The function of the balloon is to help the silicone stent 6 to elastically recover when its own elasticity cannot expand the tracheal wall and to be fixed in the trachea faster. The tail end of the operating rod 3 is an operating handle 19. The operating handle 19 is cylindrical and slightly thicker than the operating rod 3. There is an anti-slip edge 20 at the tail end of the operating handle 19. There is a cylindrical airway interface 21 at an angle of about 45° obliquely on the operating handle 19. The tail end of the cylindrical airway interface 21 is a syringe connector. There is a wing 22 connected at the angle position between the operating handle 19 and the cylindrical airway interface 21. The connected wing 22 not only has the function of fixing the airway interface 21, but also gives the operating handle 19 a better holding feeling. The air tube channel runs from the airway interface 21 along the inside of the operating rod 3 to the inside of the balloon 4, and can inflate and deflate the balloon 4 to expand the silicone stent 6.

[0025] Inside the guide wire 5 channel in the operating rod 3, there is a metal guide wire 5 running through. The front end of the metal guide wire 5 is made of a soft material and coated with a hydrophilic layer, and the middle and tail ends have good elasticity and support. The function of the guide wire 5 is to better guide the silicone stent 6 to the designated position.

[0026] The silicone stent assembly includes a straight-cylindrical silicone stent 6 carrying radioactive particles 9 and a Y-shaped silicone stent 6 carrying radioactive particles 9. The straight-cylindrical silicone stent 6 is a straight tube with a wall thickness of 1-2 mm and a tube length of 6-15 mm, which can be arbitrarily cut according to actual use. Four rows of conical nails 25 are evenly distributed along the axial direction of the straight tube on the outer wall of the silicone stent 6, which are used to be clamped on the outer wall of the trachea to prevent the silicone stent 6 from moving. A row of particle bins 8 is provided between every two rows of conical nails 25. The four rows of particle bins 8 are also arranged axially along the tube wall. The particle bins 8 are completely arranged in the tube wall of the silicone stent 6, and the spacing between each particle bin 8 is 5 mm. The cavity of the particle bin 8 is a 0.8×5 mm cylindrical cavity, and the front end of the cylindrical cavity has a particle placement channel 11 that opens outward obliquely to the outer wall of the silicone stent 6, and the opening of the particle placement channel 11 is 0.2 mm wide. The opening of the particle placement channel 11 is smaller than the particle diameter, and the bottom surface of the oblique opening has a particle stop 12 to prevent the particles from moving outward. Since the silicone stent 6 has elastic deformation characteristics, the particles will not slip or be lost after being placed in the particle bin 8. Since the particle bins 8 are distributed around the silicone stent 6, doctors can flexibly arrange the required number of particles and particle positions according to the patient's condition to achieve precise radiotherapy.

[0027] The Y-shaped silicone stent 6 is a Y-shaped stent derived from the cylindrical silicone stent 6 according to the position and shape of the main pulmonary duct 23 and the two pulmonary bronchi 24. The outer walls of the three tubes of the Y-shaped silicone stent 6 are evenly distributed with conical nails 25 and particle bins 8, and the two silicone stents 6 with thinner tube diameters are three rows of particle bins 8. At the junction of the two thin tubes and the thick tube, there are stress relief holes 10 that penetrate the tube wall, in order to reduce the stress at the connection of the Y-shaped silicone stent 6, so that the two branches are more suitable for the branching angle of the pulmonary bronchi 24, so that the branching angle of the two branches of the Y-shaped stent is different from the bifurcation angle of the pulmonary bronchi 24, which will not make the patient feel uncomfortable. The particle bins 8 on the three branches of the Y-shaped silicone stent 6 are to meet the treatment needs of tumors in various parts of the pulmonary duct.

[0028] Method of using the silicone stent and implant kit assembly of the present invention: 1. Take out the silicone stent 6 and trim the silicone stent 6 to a desired length according to the patient's pathological characteristics.

[0029] 2. Calculate the number of particles required for the radiation dose according to the size of the patient's tumor. On the premise of ensuring radiation protection, load the required particles into the particle chamber 8 of the silicone stent 6.

[0030] 3. Take out the silicone stent conveyor, push the push rod 2 out of the front end of the outer sleeve 1, and push the operating rod 3 out of the push rod 2, so that the distance between the guide head and the push rod 2 is equal to the length of the cut silicone stent 6.

[0031] 4. Slip the 6 silicone scaffolds 6 loaded with particles onto the corresponding operating rod 3 between the seeker and the push rod 2, taking care that the airbag on the operating rod 3 is completely wrapped by the silicone scaffold 6. Then place the silicone scaffold 6 on the loading device, and with the help of the contraction and extrusion of the loading device, slip the outer sheath 1 onto the compressed silicone scaffold 6 to complete the loading.

[0032] 5. Insert the conveyor loaded with the silicone scaffold 6 into the patient's airway. With the help of the imaging device, observe the position of the patient's lesion corresponding to the imaging ring at the front end of the push rod 2 to determine the position where the silicone scaffold 6 needs to be released. After ensuring accuracy, hold the outer sheath handle 13 with one hand and the push handle 16 with the other hand. Push the push rod 2 to push the silicone scaffold 6 out of the outer sheath 1. When the silicone scaffold 6 is completely released from the restraint of the outer sheath 1, it is clamped on the tracheal wall under the action of its own elasticity. Then connect a syringe to the airway interface 21 at the end of the operating rod 3 and push the syringe forward to inject gas into the airbag at the front end of the operating rod 3. The inflation of the airbag fully supports the silicone scaffold 6 and firmly clamps it on the tracheal wall.

[0033] 6. First, withdraw the operating rod 3 so that it retracts into the push rod 2, then withdraw the push rod 2 so that it retracts into the outer sheath 1, and finally withdraw the whole assembly, ending the release procedure of the silicone scaffold 6.

[0034] The beneficial effects of the silicone scaffold and the implant set assembly of the present invention: 1. The combination of the silicone scaffold 6 and the particles physically solves the problems of poor breathing and insufficient blood supply caused by tracheal and bronchial stenosis due to lesions such as inflammatory granulomas, scars, and tumors in patients, and at the same time performs radiation therapy on the patient's tumor, fundamentally curing the patient. It also solves the problem that the metal scaffold cannot better fix the radiation particles, resulting in particle displacement and loss, which cause harm to the healthy parts of the patient.

[0035] 2. Particle bins 8 are evenly arranged around the wall of the silicone scaffold 6, allowing doctors to flexibly release the required dose of particles according to the cancer location and area of the patient, combined with the position of the corresponding silicone scaffold 6, and perform precise radiotherapy, effectively avoiding radiation damage to healthy tissues.

[0036] 3. The particle bins 8 of the silicone scaffold 6 use a single particle bin 8 as an independent unit, solving the problems that long strip-shaped particle bins 8 are not easy to place particles and it is difficult to judge the particle spacing. The oblique opening in front of the particle bin 8, with an opening diameter smaller than the particle diameter, and a particle retaining platform 12 at the bottom of the oblique opening to prevent particle outward movement, is not only easy to place but also avoids the harm caused by particle displacement and loss during particle therapy, resulting in poor treatment effects and radiation to normal tissues.

[0037] 4. The conical pins 25 evenly distributed on the outer wall of the silicone stent 6, due to the relatively soft characteristic of the silicone stent 6, when clamped on the inner wall of the trachea, it will neither cause damage to the inner wall of the trachea nor firmly fix the position of the silicone stent 6, effectively avoiding the displacement problem of the silicone stent 6. The effect is much better than that of the cylindrical pins.

[0038] 5. At the junction of the two thin tubes and the thick tube of the Y-shaped stent, there are force-relieving holes 10 penetrating the tube wall. This is to reduce the stress at the junction of the Y-shaped silicone stent 6, make the branch angles of the two branch tubes more suitable for the branch angles of the pulmonary bronchi, so that the patient will not feel discomfort due to the different bifurcation angles between the Y-shaped stent and the pulmonary bronchi, and reduce the pain of the patient.

[0039] 6. Using a flexible bronchoscope to release the silicone stent 6 solves the drawbacks of using a rigid bronchoscope, which requires general anesthesia for the patient to ensure ventilation function, and is released blindly according to the measurement method, with difficult placement, high surgical difficulty, and certain damage to the patient's airway. This reduces the risk of implanting the silicone stent 6 to a great extent, thereby expanding the scope of application of the silicone stent 6, reducing the workload of doctors, and bringing a better medical experience to the patients.

[0040] 7. The front end of the push rod 2 is inlaid with an integrally formed metal top platform 7. The metal top platform 7 can provide a hard pushing platform when the push rod 2 acts on the silicone stent 6, and can also be used as a visualization ring to judge whether the placement position of the silicone stent 6 is appropriate.

[0041] 8. The combination of the guiding head 18, the operating rod 3, and the airbag simplifies the operation steps of the doctor, allowing the doctor to release it once and easily complete the entire process. The guiding head 18 can easily guide the bronchoscope through the pharynx, avoiding damage to the glottis and other parts of the trachea. The airbag can help the elastic recovery when the silicone stent 6 cannot expand the congested tracheal wall and the silicone stent 6 itself cannot recover, and fix it in the trachea faster. It reduces the workload of doctors and the pain of patients.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A silicone stent carrying radioactive particles and an implant kit assembly, characterized in that: include: Outer cannula, push rod, operating rod, balloon, guide wire, silicone stent; The operating rod is slidably sleeved in the push rod and extends out of the front and rear ends of the push rod, the push rod is slidably sleeved in the outer sleeve and extends out of the rear end of the outer sleeve, a guide wire channel and a tracheal channel are opened in the operating rod, the guide wire is slidably arranged in the guide wire channel and extends out of the front and rear ends of the operating rod, and the front end of the operating rod is sequentially provided with the balloon and the silicone stent, the balloon is a non-compliant balloon, and the balloon is connected to the tracheal channel; When not pushed out, the balloon and silicone stent are accommodated in the front end of the outer sleeve, the front end of the push rod is provided with a top platform for pushing the silicone stent and for the developing ring, and the silicone stent is provided with a plurality of particle bins filled with radioactive particles.

2. The silicone stent and implant kit assembly carrying radioactive particles according to claim 1, characterized in that: The silicone bracket includes a straight-tube silicone bracket and a Y-shaped silicone bracket. The Y-shaped silicone bracket includes the straight-tube silicone bracket and two branch tubes connected to the straight-tube silicone bracket.

3. The silicone stent and implant kit assembly carrying radioactive particles according to claim 2, characterized in that: A plurality of rows of conical nails and a plurality of rows of particle bins are axially distributed on the straight-cylindrical silicone stent.

4. The silicone stent and implant kit assembly carrying radioactive particles according to claim 2, characterized in that: A plurality of pressure relief holes are provided at the junction of the straight-tube silicone bracket and the two branch pipes.

5. The silicone stent carrying radioactive particles and implant kit assembly according to claim 2, characterized in that: Several particle bins are distributed axially along the straight-cylindrical silicone stent. The particle bin is a cylindrical cavity. One end of the cylindrical cavity is a particle placement channel. The entrance of the particle placement channel is sloped. The bottom of the slope is a particle baffle for preventing the radioactive particles from slipping. The cylindrical cavity is filled with radioactive particles.

6. The silicone stent carrying radioactive particles and implant kit assembly according to claim 1, characterized in that: The outer sleeve is a soft and supportive transparent tube, a length scale line is arranged on the outer sleeve, an outer sleeve handle is arranged at the rear end of the outer sleeve, and an outer sleeve handle stopper is arranged at the rear end of the outer sleeve handle.

7. The silicone stent carrying radioactive particles and implant kit assembly according to claim 1, characterized in that: The push rod has bending characteristics and a supporting force, a space for accommodating the balloon to be withdrawn is formed at the front end of the push rod, a push handle is arranged at the rear end of the push rod, and push handle stops are arranged at the front and rear ends of the push handle.

8. The silicone stent and implant kit assembly carrying radioactive particles according to claim 1, characterized in that: The front end of the operating rod is a sleeve-integrated conical guide head made of silicone material. The cone bottom of the guide head is a cylinder, and the outer edge is equivalent to the inner diameter of the outer sleeve, and can be sleeved into the outer sleeve.

9. The silicone stent carrying radioactive particles and implant kit assembly according to claim 1, characterized in that: An operating handle is provided at the rear end of the operating rod, an anti-slip rib is provided at the rear end of the operating handle, an airway interface connected to the tracheal channel is provided on the operating handle, and a wing connecting the operating handle and the airway interface is provided on the operating handle.

10. The silicone stent carrying radioactive particles and implant kit assembly according to claim 1, characterized in that: The guide wire is a metal guide wire, the front end of the guide wire is made of soft material and coated with a hydrophilic layer, and the middle and tail ends of the guide wire are elastic and supportive.

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