阅读说明：本技术 放射性粒子植入固定装置及方法 (Radioactive particle implantation fixing device and method ) 是由 韩雪冰 于 2021-09-24 设计创作，主要内容包括：本发明提供一种放射性粒子植入固定装置及方法,属于粒子植入的技术领域,包括硅胶薄片以及用于将放射性粒子植入硅胶薄片的粒子植入器械；硅胶薄片的表面设置有多个凸起的粒子放置区块；粒子放置区块包括与硅胶薄片表面连接的硅胶外壳,硅胶外壳上设置有放射性粒子植入孔,放射性粒子植入孔通过硅胶薄膜封闭；粒子植入器械包括器械杆、滑动穿刺腔、滑动齿条、齿轮、滑动穿刺套针固定卡块、滑动穿刺套针、推针、粒子装载模块、固定手柄、转动手柄、转向拨片和压紧组件。本发明可满足不同手术场景需求,开放手术和腹腔镜手术均可应用,应用范围广,实用性强,适合推广应用。(The invention provides a radioactive particle implantation fixing device and a method, belonging to the technical field of particle implantation, and comprising a silica gel sheet and a particle implantation instrument for implanting radioactive particles into the silica gel sheet; the surface of the silica gel sheet is provided with a plurality of raised particle placing blocks; the particle placement block comprises a silica gel shell connected with the surface of the silica gel sheet, a radioactive particle implantation hole is formed in the silica gel shell, and the radioactive particle implantation hole is sealed by a silica gel film; the particle implantation instrument comprises an instrument rod, a sliding puncture cavity, a sliding rack, a gear, a sliding puncture trocar fixing clamping block, a sliding puncture trocar, a push needle, a particle loading module, a fixing handle, a rotating handle, a steering poking sheet and a pressing assembly. The invention can meet the requirements of different operation scenes, can be applied to open operations and laparoscopic operations, has wide application range and strong practicability, and is suitable for popularization and application.)

1. A radioactive particle implantation fixing device is characterized by comprising a silica gel sheet and a particle implantation instrument for implanting radioactive particles into the silica gel sheet;

the surface of the silica gel sheet is provided with a plurality of raised particle placing blocks;

the particle placement block comprises a silica gel shell connected with the surface of the silica gel sheet, a radioactive particle implantation hole is formed in the silica gel shell, and the radioactive particle implantation hole is sealed by a silica gel film;

the particle implantation instrument comprises an instrument rod, a sliding puncture cavity, a sliding rack, a gear, a sliding puncture trocar fixing clamping block, a sliding puncture trocar, a push needle, a particle loading module, a fixing handle, a rotating handle, a steering poking sheet and a pressing assembly;

the sliding puncture cavity is positioned below the instrument rod and communicated with the instrument rod;

the sliding rack is slidably arranged in the instrument rod;

the gear is rotatably arranged in the sliding puncture cavity and is meshed with the sliding rack;

the sliding puncture trocar fixing clamping block is fixed on the sliding rack;

the sliding puncture trocar is inserted from the head part of the instrument rod and is detachably connected with the sliding puncture trocar fixing clamping block;

the push needle is inserted from the tail part of the instrument rod and is arranged opposite to the sliding puncture trocar;

the particle loading module is arranged on the instrument rod, and the particle loading port is positioned between the insertion port of the push needle and the sliding puncture trocar;

the fixed handle is fixedly arranged below the sliding puncture cavity;

the rotating handle penetrates through a handle swinging hole of the sliding puncture cavity, the top end of the rotating handle is rotatably connected with a wheel shaft of the gear, and the bottom end of the rotating handle is positioned below the sliding puncture cavity;

the steering shifting piece is rotatably arranged on the rotating handle, two driving teeth are arranged on one surface facing the gear, the single driving tooth is meshed with the gear to push the gear to rotate clockwise or anticlockwise, and an arc-shaped convex surface is arranged on one surface facing away from the gear;

the pressing assembly is arranged on the rotating handle and used for pressing the arc-shaped convex surface.

2. The radioactive particle implantation fixture according to claim 1, wherein the silicone housing has a semi-cylindrical shape, and the radioactive particle implantation hole is formed on a semicircular plane symmetry axis of the silicone housing.

3. The radioactive particle implantation fixing apparatus according to claim 2, wherein the edge of the silicone sheet is provided with a plurality of Y-shaped protrusions.

4. The radioactive particle implantation fixing apparatus according to claim 3, wherein the silicone sheet is a square sheet made of medical silicone rubber, and each corner is provided with a Y-shaped protrusion.

5. The radioactive particle implantation fixing apparatus according to claim 4, wherein the two driving teeth are symmetrically disposed at both sides of the arc-shaped protrusion surface, and the arc-shaped protrusion surface is provided with a limiting protrusion.

6. The radioactive seed implantation fixation apparatus of claim 5, wherein the compression assembly comprises a compression block and a compression spring;

a pressure spring mounting groove is formed in the rotating handle, and a pressure spring is mounted in the pressure spring mounting groove;

two ends of the pressing block are respectively clung to the arc-shaped convex surface and the pressure spring.

7. The radioactive particle implantation fixture of claim 6, wherein the particle loading module comprises a cartridge clip and the particles are disposed in the cartridge clip, the cartridge clip being inserted into the cartridge clip slot of the instrument stem.

8. The radioactive seed implantation fixture of claim 7, wherein the instrument shaft and the sliding puncture trocar are uniformly provided with a plurality of graduations.

9. The radioactive particle implantation fixture of claim 8, wherein the instrument rod is provided with an instrument rod rotation mechanism, a flushing port and a monopolar electrocoagulation connector.

10. A radioactive particle implantation fixing method is characterized by comprising the following steps:

s1, firstly, determining the number of particles implanted in the tumor bed or the vascular operation area and the shape and size of the silica gel sheet in the radioactive particle implantation fixing device according to the preoperatively prepared particle implantation plan;

s2, implanting the radioactive seeds into the silicone sheet using the apparatus for implanting seeds in a radioactive seeds implanting fixture according to any one of claims 1 to 9: the sliding puncture trocar is arranged in the instrument rod from the head part of the instrument rod and is connected with the fixed clamping block of the sliding puncture trocar, then the particle loading module is arranged on the instrument rod, the head part of the instrument rod is abutted against and clings to the silica gel film, the driving tooth which can lead the sliding rack to move forward is pressed and meshed with the gear, the rotating handle is pulled, the sliding puncture trocar pierces the silica gel film and pierces the radioactive particle implantation hole, the push needle is arranged from the tail part of the instrument rod, the push particles are implanted in the radioactive particle implantation hole through the sliding puncture trocar, after the implantation is finished, the driving tooth which can lead the sliding rack to move backward is pressed and meshed with the gear, and the rotating handle is pulled, so that the sliding puncture trocar exits from the radioactive particle implantation hole;

and S3, rolling the silicon gel sheet by the surgical instrument.

Technical Field

The invention belongs to the technical field of particle implantation, and particularly discloses a radioactive particle implantation fixing device and a radioactive particle implantation fixing method.

Background

At present, a plurality of particle implantation needles are vertically inserted into a tumor part under direct vision in an open surgery, the distance between the implantation needles is 1cm, the insertion vertical depth is 0.3-2.3 cm, <1cm is implanted with 1 particle, and >2cm is implanted with 1 particle by utilizing the backward mode of an implantation gun at the vertical distance of 1 cm. The particles are implanted into the needle core and withdrawn, and the particles are implanted after the needle tube is observed to have no obvious bleeding, so as to avoid damaging the great vessels. After the implanted particles are pulled out of the needle tube, the local part of the implanted particles is pressed by sterile gauze for 5 min, so that the needle eye bleeding and the particle slippage can be avoided. The perivascular tumor bed is implanted by adopting a method of adhering sandwich particle block biological adhesive and suturing to surround blood vessels. Preparation of intraoperative "sandwich" particle block: under the conditions of sterility and radiation protection shielding, 1/2 of 1 particle is vertically inserted into one piece of gelatin sponge by a particle implantation gun, the distance between the particles is 1cm, the number of the particles is 4-6, the other piece of gelatin sponge is covered and extruded to insert another 1/2 of the particles, then the gelatin sponge is wrapped by absorbable gauze or hemostatic gauze, and the gauze is sewn by a No. 1 silk thread.

From the above particle implantation operation, it can be seen that the particles can be fixed and not easily move after the particles are implanted in the tumor body of the solid tumor, and after the particles on the surface of the solid tumor, the tumor bed and the surface of the blood vessel are implanted, the particles are likely to move, which affects the treatment effect and may cause adverse reactions, thereby limiting the clinical application of radioactive particle implantation to a great extent.

Chinese patent CN 208481895U discloses a polylactic acid patch for local precise radiotherapy, which uses polylactic acid strips to form a square grid frame, and sequentially inserts iodine-125 particles into the grid cross coincident points to form a patch that can be attached to the surface of a tumor. However, the grid of the patent is complex to manufacture, no other fixing mode is available after the iodine-125 particles are inserted into the cross points of the polylactic acid strips, and the risk of particle falling and displacement exists.

Chinese patent CN 211068740U discloses a particle matrix mesh for brachytherapy, which is placed on a bioabsorbable perforated mesh through holes with particle chains, and then the mesh is attached to the tissue surface and sewn and fixed. However, the manufacturing of the particle chain and the manufacturing of the perforated mesh cloth are complex, the particle chain and the meshes of the bio-absorbable mesh cloth are not fixed, the absorbable mesh cloth and the tube have the risk of particle shedding and displacement after being absorbed by the body, and the particle matrix mesh cloth is placed and fixed under the laparoscope, so that the operation is complex and the difficulty is high.

Disclosure of Invention

Aiming at the problems that after the particles on the surface of the existing solid tumor, tumor bed and blood vessel are implanted, the particles are easy to shift, the treatment effect is influenced and adverse reaction is possibly caused, the invention provides a radioactive particle implantation fixing device and a radioactive particle implantation fixing method.

In order to achieve the above object, the present invention provides a radioactive particle implantation fixing device, which comprises a silica gel sheet and a particle implantation apparatus for implanting radioactive particles into the silica gel sheet;

the surface of the silica gel sheet is provided with a plurality of raised particle placing blocks; the particle placement block comprises a silica gel shell connected with the surface of the silica gel sheet, a radioactive particle implantation hole is formed in the silica gel shell, and the radioactive particle implantation hole is sealed by a silica gel film;

the particle implantation instrument comprises an instrument rod, a sliding puncture cavity, a sliding rack, a gear, a sliding puncture trocar fixing clamping block, a sliding puncture trocar, a push needle, a particle loading module, a fixing handle, a rotating handle, a steering poking sheet and a pressing assembly; the sliding puncture cavity is positioned below the instrument rod and communicated with the instrument rod; the sliding rack is slidably arranged in the instrument rod; the gear is rotatably arranged in the sliding puncture cavity and is meshed with the sliding rack; the fixed fixture block of the sliding puncture trocar is fixed on the sliding rack; the sliding puncture trocar is inserted from the head part of the instrument rod and is detachably connected with the sliding puncture trocar fixing clamping block; the push needle is inserted from the tail part of the instrument rod and is arranged opposite to the sliding puncture trocar; the particle loading module is arranged on the instrument rod, and the particle loading port is positioned between the insertion port of the push needle and the sliding puncture trocar; the fixed handle is fixedly arranged below the sliding puncture cavity; the rotating handle penetrates through a handle swinging hole of the sliding puncture cavity, the top end of the rotating handle is rotatably connected with a wheel shaft of the gear, and the bottom end of the rotating handle is positioned below the sliding puncture cavity; the steering shifting piece is rotatably arranged on the rotating handle, one surface facing the gear is provided with two driving teeth, the single driving tooth is meshed with the gear to push the gear to rotate clockwise or anticlockwise, and one surface facing away from the gear is provided with an arc-shaped convex surface; the pressing assembly is arranged on the rotating handle and used for pressing the arc-shaped convex surface.

Furthermore, the silica gel shell is a semi-cylindrical shell, and the radioactive particle implantation hole is positioned on a semi-circular plane symmetry axis of the silica gel shell.

Further, the edge of the silicone sheet is provided with a plurality of Y-shaped protrusions.

Furthermore, the silica gel sheet is a square sheet made of medical silica gel, and each corner is provided with a Y-shaped protrusion.

Furthermore, two driving teeth are symmetrically arranged on two sides of the arc-shaped protruding surface, and limiting protrusions are arranged on the arc-shaped protruding surface.

Further, the pressing assembly comprises a pressing block and a pressing spring; a pressure spring mounting groove is formed in the rotating handle, and a pressure spring is mounted in the pressure spring mounting groove; two ends of the pressing block are respectively clung to the arc-shaped convex surface and the pressure spring.

Further, the particle loading module comprises a cartridge clip and the particles arranged in the cartridge clip, wherein the cartridge clip is inserted into the cartridge clip groove of the instrument rod.

Furthermore, a plurality of scale marks are uniformly arranged on the instrument rod and the sliding puncture trocar.

Further, an instrument rod rotating mechanism, a flushing port and a monopolar electrocoagulation joint are arranged on the instrument rod.

The invention also provides a radioactive particle implantation fixing method, which comprises the following steps:

s1, firstly, determining the number of particles implanted in a tumor bed or a vascular surgery area and the shape and size of the silica gel sheet in the radioactive particle implantation fixing device according to a preoperatively made particle implantation plan;

s2, implanting the particles into the silicone sheet using the particle implanting apparatus in the radioactive particle implanting fixing device as described above: the sliding puncture trocar is arranged in the instrument rod from the head part of the instrument rod and is connected with the fixed clamping block of the sliding puncture trocar, then the particle loading module is arranged on the instrument rod, the head part of the instrument rod is abutted against and clings to the silica gel film, the driving tooth which can lead the sliding rack to move forward is pressed and meshed with the gear, the rotating handle is pulled, the sliding puncture trocar pierces the silica gel film and pierces the radioactive particle implantation hole, the push needle is arranged from the tail part of the instrument rod, the push particles are implanted in the radioactive particle implantation hole through the sliding puncture trocar, after the implantation is finished, the driving tooth which can lead the sliding rack to move backward is pressed and meshed with the gear, and the rotating handle is pulled, so that the sliding puncture trocar exits from the radioactive particle implantation hole;

and S3, rolling the silicon gel sheet by the surgical instrument.

The invention has the following beneficial effects:

1. the silica gel sheet adopted by the invention has simple structure and convenient operation, and can implant particles at one time in the operation, thereby greatly improving the implantation efficiency;

2. the silica gel sheet prepared by utilizing the good medical characteristics of the medical silica gel can be applied to the surface of a tissue to be irradiated, can be kept to be attached along with the change of the attachment surface of the tissue, simultaneously avoids the displacement and the falling of particles, can realize the high-precision conformal radiotherapy of tissues such as tumor tissues, tumor beds and the like, and improves the radiotherapy effect;

3. the particle implantation instrument is adopted, a handle support system is formed by an instrument rod, a sliding puncture cavity and a fixed handle, a sliding puncture system is formed by a sliding rack, a gear, a sliding puncture trocar fixing clamping block, a sliding puncture trocar, a rotating handle, a steering poking sheet and a pressing assembly, the sliding puncture system can be accurately punctured by the sliding puncture trocar and enter tumor tissues by combining the sliding puncture trocar and the sliding puncture clamping block, a particle pushing system is formed by a particle loading module and a push needle, and continuous pushing implantation of particles can be realized by combining the handle support system and the particle pushing system;

4. the requirements of different operation scenes are met, the open operation and the laparoscopic operation can be applied, the application range is wide, the practicability is high, and the method is suitable for popularization and application.

Drawings

FIG. 1 is a developed view of a silicone sheet;

FIG. 2 is a schematic structural diagram of a particle placement block;

FIG. 3 is a view showing a rolled state of a silicone sheet;

FIG. 4 is a schematic view of the laparoscopic particle implantation surgical instrument in an advanced state;

FIG. 5 is a schematic view of the laparoscopic particle implantation surgical instrument in a retracted state;

FIG. 6 is a combination view of the gear, twist grip and turn indicator;

FIG. 7 is a schematic view showing the installation of the steering plectrum, the pressing block and the pressing spring on the rotating handle.

In the figure: a silicone sheet 101; a silicone shell 102; a radioactive seed implantation hole 103; a silica gel film 104; a Y-shaped projection 105; an instrument stem 201; sliding puncture lumen 202; a sliding rack 203; a gear 204; 204.1 of the axle; the sliding puncture trocar fixes the fixture block 205; a sliding puncture trocar 206; a push pin 207; a particle loading module 208; a cartridge clip 208.1; particles 208.2; a fixed handle 209; rotating the handle 210; a steering paddle 211; an upper drive tooth 211.1; lower drive teeth 211.2; an arcuate raised surface 211.3; a limit protrusion 211.4; a briquette 212; a pressure spring 213; an instrument lever rotation mechanism 214; a flush port 215; a monopolar electrocoagulation junction 216.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The embodiment provides a radioactive seed implantation fixing device, which comprises a silica gel sheet 1 and a seed implantation instrument for implanting radioactive seeds into the silica gel sheet.

The surface of the silica gel sheet 101 is provided with a plurality of raised particle placing blocks; the particle placing block comprises a silica gel shell 102 connected with the surface of a silica gel sheet 101, a radioactive particle implanting hole 103 is arranged on the silica gel shell 102, and the radioactive particle implanting hole 103 is closed by a silica gel film 104.

Further, the silicone shell 102 is a semi-cylindrical shell, and the radioactive seeds implanting holes 103 are located on a semicircular surface of the silicone shell 102.

Further, the radioactive seed implanting hole 103 is located on the axis of symmetry of the semicircular plane.

Further, the silicone sheet 101 has a plurality of Y-shaped protrusions 105 at its edge, and may be fixed to Y-shaped protrusions 105 of other silicone sheets 101, or may be fixed to tissue.

Further, the silicone sheet 101 is a square sheet, and each corner is provided with a Y-shaped protrusion 105.

Further, the silicone sheet 101 is made of medical silicone rubber. Medical silica gel is a biological material which is widely applied in the cosmetic surgery, and has various forms, such as: liquid silicone oil, jelly-like silicone, foamed silicone sponge, elastic solid silicone rubber, and the like, and solid silicone rubber is widely used. The silicone rubber belongs to one of synthetic rubbers, has a chemical name of polymethylvinylsiloxane, is formed by polymerizing dimethyl siloxane monomers and other organic silicon monomers under the action of an acid or alkali catalyst, and has a relative molecular weight of 40-50 ten thousand generally. Hardness range: 30-80 degrees (Shore A), the silicon rubber is a high molecular medical material with excellent performance, is used as a medical artificial material, has low cost and high practicability, is not easy to reject and reflect, does not have any harm to human bodies, has good biocompatibility, and does not influence the radioactive ray operation of radioactive particles. Secondly, the silicon rubber product has the good medical characteristics of no color, no toxicity, high temperature resistance, oxidation resistance, softness, transparency and the like. In addition, it has blood coagulation properties; the toxicity test result meets the medical requirements; in clinical application, the biocompatibility is good, the distortion effect and the anaphylactic reaction are avoided; the elastomer has excellent toughness and elasticity, good processing performance and various processing modes, and is a preferred material for manufacturing various medical elastomer products; has excellent wear resistance, soft touch, moisture resistance and various chemical resistance.

Further, the length of the silica gel sheet 101 is 20mm-80mm, the width is 20mm-80mm, and the thickness is 1.0 mm; the length of the semi-cylindrical shell is 6.0mm, the width of the semi-cylindrical shell is 1.5mm, the height of the semi-cylindrical shell is 1.5mm, and the radial distance between two adjacent semi-cylindrical shells is 5mm or 10 mm; the thickness of the silica gel film 104 is 0.5 mm; the dimensional tolerance is 0.1 mm.

The particle implantation instrument comprises an instrument rod 201, a sliding puncture cavity 202, a sliding rack 203, a gear 204, a sliding puncture trocar fixing fixture block 205, a sliding puncture trocar 206, a push needle 207, a particle loading module 208, a fixing handle 209, a rotating handle 210, a steering plectrum 211 and a pressing component; the sliding puncture cavity 202 is positioned below the instrument rod 201, and the sliding puncture cavity 202 is communicated with the instrument rod 201; a sliding rack 203 is slidably mounted in the instrument rod 201; the gear 204 is rotatably arranged in the sliding puncture cavity 202 and is meshed with the sliding rack 203; the sliding puncture trocar fixing fixture block 205 is fixed on the sliding rack 203; the sliding puncture trocar 206 is inserted from the head part of the instrument rod 201 and is detachably connected with the sliding puncture trocar fixing fixture block 205; the push pin 207 is inserted from the tail of the instrument rod 201 and is arranged opposite to the sliding puncture trocar 206; the particle loading module 208 is arranged on the instrument rod 201, a particle loading port is positioned between an insertion port of the push pin 207 and the sliding puncture trocar 206, the particle loading module 208 is used for loading radioactive particles, and the push pin 207 realizes single-time push of single or multiple particles for continuous implantation; fixed handle 209 is fixedly disposed below sliding puncture lumen 202; the rotating handle 210 passes through a handle swinging hole of the sliding puncture cavity 202, the top end of the rotating handle is rotatably connected with a wheel shaft 204.1 of the gear 204, and the bottom end of the rotating handle is positioned below the sliding puncture cavity 202; the steering plectrum 211 is rotatably arranged on the rotating handle 210, one surface facing the gear 204 is provided with two driving teeth (211.1 and 211.2), the single driving tooth is meshed with the gear 204 to push the gear 204 to rotate clockwise or anticlockwise, and the surface facing away from the gear 204 is provided with an arc-shaped convex surface 211.3; the gear 207, the steering plectrum 211 and the rotating handle 210 form a ratchet wheel and pawl structure capable of rotating in two directions; a compression assembly is mounted in the sliding puncture chamber 202 for compressing the arcuate raised surface 211.3.

Further, the driving tooth has an upright face and a flat face, the slope of the upright face being greater than the slope of the flat face, as shown by the upper driving tooth 211.1 and the lower driving tooth 211.2 in the figure.

Further, two driving teeth are symmetrically arranged on two sides of the arc-shaped protruding surface 211.3, and a limiting protrusion 211.4 is arranged on the arc-shaped protruding surface 211.3.

Further, the compressing assembly comprises a pressing block 212 and a pressing spring 213; a pressure spring mounting groove is formed in the rotating handle 210, and a pressure spring 213 is mounted in the pressure spring mounting groove; two ends of the pressing block 212 are respectively attached to the arc-shaped convex surface 211.3 and the pressure spring 213.

Further, the rotating handle 210 may be a Y-shaped structure, one branch is used for rotatably connecting with the axle 204.1 of the gear 204, and the other branch is used for installing the steering plectrum 211, the pressing block 212 and the pressure spring 213; the structure can also be an inverted V-shaped structure, namely as shown in fig. 7, the inflection point is rotationally connected with the axle 204.1 of the gear 204, one side is a holding part, and the other side is used for installing the steering poking piece 211, the pressing piece 212 and the pressing spring 213.

Furthermore, the part of the rotating handle 210, on which the steering shifting piece 211, the pressing piece 212 and the pressure spring 213 are mounted, is a cavity structure, the steering shifting piece 211 penetrates through the cavity, and the pressing piece 212 and the pressure spring 213 are arranged in the cavity.

Further, the particle loading module 208 comprises a cartridge 208.1 and a particle 208.2 arranged in the cartridge 208.1, the cartridge 208.1 being inserted into the cartridge slot of the instrument stem 201.

Furthermore, a plurality of scale marks are uniformly arranged on the instrument rod 201 and the sliding puncture trocar 206.

Further, an instrument rod rotating mechanism 214, a flushing port 215 and a monopolar electrocoagulation joint 216 are arranged on the instrument rod 201. The instrument lever rotating mechanism 214, the flushing port 215, and the monopolar coagulation connector 216 are conventional. The instrument lever rotating mechanism 214 is used for rotating the instrument lever 201, and since the sliding rack 203 rotates relative to the gear 204 due to the rotation of the instrument lever 201, the gear 204 should have a certain thickness to prevent the sliding rack 203 from separating from the gear 204.

Further, the turning handle 210 is located behind the fixed handle 209, and the turn paddle 211 is located behind the turning handle 210.

Further, a bottom end of the fixed handle 209 is provided with a grip ring through which fingers pass.

Example 2

The embodiment provides a radioactive particle implantation fixing method, which comprises the following steps.

a. Firstly, the number of particles implanted in a tumor bed or a vascular surgery area and the shape and size of the silica gel sheet 101 are determined according to a preoperatively prepared particle implantation plan.

b. Taking the silica gel sheet 101 out, and shearing the sheet with the corresponding size according to the step a.

c. The particles were implanted into the silicone sheet 101 using a particle implantation instrument: firstly, a sliding puncture trocar 206 is arranged in an instrument rod 201 from the head of the instrument rod 201 and is connected with a sliding puncture trocar fixing fixture block 205, then a cartridge clip 208.1 is arranged on the instrument rod 201, the instrument is held by hand to enable the head of the instrument rod 1 to be close to and tightly attached to a silica gel film 104, taking the direction and the position of a driving tooth as an example in figure 4, a lower driving tooth 211.2 of a turning shifting piece 211 is pressed to be meshed with the teeth of a gear 207, a pressing block 212 presses an arc-shaped convex surface 211.2 above a limiting bulge 211.3, a rotating handle 210 is pulled backwards, the vertical surface of the lower driving tooth 211.2 pushes the teeth a to rotate anticlockwise, the gear 207 rotates anticlockwise, the teeth b are close to the lower driving tooth 211.2, the rotating handle 210 is pulled forwards, the lower driving tooth 211.2 crosses the teeth b and is inserted into the tooth space between the teeth b and the next teeth c, the rotating handle 210 is pulled backwards again, and the rotating handle 210 is repeatedly pulled backwards, so that the gear 207 is clamped and anticlockwise rotated, the sliding rack 203 translates forwards, so that the sliding puncture trocar 206 pierces into the radioactive seed implantation hole 103, the sliding puncture trocar 206 pierces into a preset distance when the handle is held tightly, the push pin 207 is installed from the tail of the instrument rod 201, the push seeds 208.2 are implanted into the radioactive seed implantation hole 103 through the sliding puncture trocar 206, and 1 seed is implanted when the push pin 207 is pushed once;

as shown in fig. 5, the upper driving tooth 211.1 of the push-turn paddle 211 is engaged with the teeth of the gear 207, the pressing block 212 presses the arc-shaped convex surface 211.2 below the limit protrusion 211.3, the rotating handle 210 is pulled forward, the vertical surface of the upper driving tooth 211.1 pushes the teeth d to rotate clockwise, the gear 7 rotates clockwise, the teeth e approach the upper driving tooth 11.1, the rotating handle 210 is pulled backward, the upper driving tooth 211.1 crosses the teeth e, is inserted into the tooth space between the teeth e and the next teeth f, the rotating handle 210 is pulled forward again, and so on, the gear 207 is clamped clockwise, the sliding rack 203 translates backward, the sliding trocar 206 is withdrawn from the radioactive particle implantation hole 103, and the sliding trocar 206 is withdrawn by a preset distance every time the handle is pulled tightly until the sliding trocar 206 is completely pushed out of the tissue.

d. The silicone sheet 101 is rolled up by a surgical instrument.

e. The rolled silicone sheet 101 is implanted into the surgical area.

f. The silicone sheet 101 is fixed by a titanium clip or a Hem-o-lok clip, and is fixed by the mutual connection between the Y-shaped protrusions 105, or the Y-shaped protrusions 105 are fixed with tissues.

g. The above operations are all carried out under the wearing of radioactive particle protection equipment.

Further, the implanted particles are iodine-125 particles, palladium-103 particles, gold-198 particles, cesium-131 particles, ytterbium-169 particles, yttrium-90 particles, or phosphorus-32 particles.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.