CN115382115A - Radioactive particle bin and radioactive particle implantation gun - Google Patents

Abstract

The invention discloses a radioactive particle bin and a particle implantation gun, which are characterized in that: the particle-free particle feeder comprises a front cover (10-2), a rotary magazine (10-7) and a rear cover (10-3), wherein the rotary magazine (10-7) is arranged in an area formed by wrapping the front cover (10-2) and the rear cover (10-3), a plurality of particle mounting holes (10-9) are formed in the rotary magazine (10-7), the front cover (10-2), the rotary magazine (10-7) and the rear cover (10-3) are respectively provided with an axle center hole (10-4) capable of penetrating through a rotary rod (6), only the rotary magazine (10-7) can synchronously rotate with the rotary rod (6), the front cover (10-2) is further provided with a positioning hole (10-1), the rear cover (10-3) is provided with a locking hole (10-8), the positioning hole (10-1) is arranged on the outer surface of the front cover (10-2), and the locking hole (10-8) is arranged on the outer surface of the rear cover (10-3); the positioning hole (10-1) is used for being clamped on a positioning bulge (14) of the gun body (1), and the locking hole (10-8) can be inserted by a fixing pin (7).

Description

Radioactive particle bin and radioactive particle implantation gun

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a radioactive particle bin and a radioactive particle implantation gun.

Background

In recent years, with the development of non-vascular puncture technology under image guidance, the radioactive particle implantation technology for treating malignant tumors is more and more emphasized by clinicians because of the advantages of small operation trauma, high treatment radiation dose, small damage to peripheral tissues and the like, and is widely applied to the treatment of cancers such as prostate cancer, lung cancer, liver cancer, pancreatic cancer, breast cancer, rectal cancer, spinal metastatic cancer and the like. The radioactive particle implantation treatment is to implant a closed radioactive source with certain specification and activity into a substantial tumor tissue according to a preset treatment plan, retain the radioactive source for a long time, and continuously irradiate tumor cells by utilizing gamma rays released by the spontaneous decay of radioactive nuclides to cause the damage of the tumor cells, thereby effectively destroying focus tissues and inhibiting the proliferation of the tumor cells.

The radioactive particle is a small radioactive source, the radioactive isotope is arranged in a titanium tube, two ends of the radioactive particle are welded by using laser or electron beam technology to form a sealed source, the size of the currently widely used radioactive particle is generally 0.8mm of outer diameter, 4.5mm of length, and the radioactivity is generally 0.1-1 mCi.

In the early radioactive particle implantation treatment, operators often directly hold the particles by tweezers and feed the particles into the puncture needle, the operation undoubtedly increases the occupational radiation exposure of the operators, and meanwhile, the radioactive particle source is easily dropped or even lost due to errors. Thus, a magazine for storing pellets and a pellet implanting gun which is convenient to operate are proposed.

The particle magazine that at present widely used mainly is square structure, has the magazine that can hold the particle in the square structure to be used for storing banding particle source, and there is a diameter through-hole the same with the particle source bottom of square structure for release the particle source from the magazine, and there is the opening in the top of square structure to be used for filling the particle and can link to each other with the bullet pressing mechanism that takes the spring through the screw thread simultaneously. When the particle gun is used, the bottom of the magazine is connected with the particle gun, so that the through hole of the magazine and the through hole where the particle gun push rod is located are in a straight line, the push rod of the particle gun is used for pushing out the particles at the bottommost part of the magazine from the through hole of the magazine, the particles are implanted into a focus through the particle gun and the puncture needle, then the particle gun push rod is pulled out, at the moment, the particle source is pressed into the bottom of the magazine under the action force of the extension of the spring by the bullet pressing mechanism of the magazine, and then the push rod can be used again for repeatedly pushing and implanting the particles.

Although the structure is relatively simple, a lot of problems exist, firstly, the size of the magazine slot is small due to the small size of the particle source, so that the particle filling becomes an operation with very fine fault tolerance, and the size of the magazine slot is slightly larger than the size of the particle source due to the problem of the size tolerance of the particle source, the particle source frequently shakes in the magazine slot during the filling process and is even clamped in the magazine slot, and at the moment, all particles need to be poured out and then refilled, so that not only is the time wasted, but also the occupational radiation exposure of the hands of an operator is increased; secondly, when the particles are implanted, the push rod of the particle gun repeatedly passes through the through hole at the bottom of the magazine, and at the moment, the push rod can be infected with blood or tissue of a human body and brought into the through hole to cause blockage, so that the magazine cannot be used continuously; finally, because the particles are stored in the open magazine, the magazine and particle gun are often made of expensive and heavy metal materials and reused in view of radiation safety, and the heavy instruments are heavy during use, which may cause hand fatigue of the surgeon and cause operational errors, and during cleaning and disinfection after use, the fine structures, especially the fine through hole structures, may not be cleaned in place, which undoubtedly increases the risk of surgical exposure and infection.

Therefore, the applicant proposes a radioactive particle implantation gun which is simple in structure and good in use effect. Simultaneously still provide the radioactive seeds storehouse of supporting this implantation rifle to use, this particles storehouse has advantages such as simple structure, excellent in use effect.

Disclosure of Invention

The invention aims to provide a radioactive particle bin and a radioactive particle implantation gun which are simple in structure and good in using effect.

In order to achieve the above purpose, the present invention provides the following technical solutions: a radioactive-particle implanting gun, comprising a gun body (1), characterized in that: the gun body (1) is at least provided with a particle through hole A (2), a fixing pin (7), a rotating rod (6) and a push rod (8), the fixing pin (7) is provided with a through hole capable of penetrating through the push rod (8), the push rod (8) is arranged in the through hole and can move freely, the rotating rod (6) is rotatably connected to the gun body (1), the rotating rod (6) can be sleeved with a radioactive particle bin (10), the radioactive particle bin (10) is positioned between the fixing pin (7) and the gun body (1) after being sleeved, the fixing pin (7) tightly presses and fixes the radioactive particle bin (10) on the gun body (1), the push rod (8) can move towards the particle through hole A (2) from the fixing pin (7) when moving and extends out of the particle through hole A (2), the radioactive particle bin (10) passes through the radioactive particle bin (10) and pushes out particles in the bin when extending out, the radioactive particle bin (10) is provided with a particle through hole B (10-6) and a rotating magazine (10-7), the rotating magazine (10) is provided with at least a particle mounting hole (9) for mounting particles, and the rotating rod (10-10) is only capable of driving the rotating particle bin (6) when the rotating rod (7) is rotating, the rotating particle bin (10-10), the rotating rod (6) can only drive the rotating magazine (10-7) to rotate when rotating; when the particles need to be implanted, the push rod (8) is only required to be moved, the particles arranged in the particle mounting holes (10-9) on the rotary magazine (10-7) are pushed out from the rotary magazine (10-7) through the moving push rod (8), and the pushed particles are pushed out from the particle through hole A (2) on the gun body (1).

As an improvement, a holding fingerstall (17) is arranged on the gun body (1).

In actual use: the method comprises the steps that particles to be implanted are installed in particle installation holes (10-9) of a rotary magazine (10-7), then the radioactive particle magazine (10) is sleeved on a rotary rod (6), synchronous rotation is achieved between the rotary magazine (10-7) and the rotary rod (6) through a key groove (10-5) and a key, namely an axial hole (10-4) is formed in the rotary magazine (10-7), the axial hole (10-4) is inserted into the rotary rod (6), the key groove is formed in the axial hole (10-4), a protrusion capable of being clamped in the key groove (10-5) is arranged on the rotary rod, and after insertion, the protrusion on the rotary rod (6) is clamped in the key groove of the rotary magazine (10-7) to drive the rotary magazine (10-7) to rotate.

The rotary magazine (10-7) can be provided with a plurality of particle mounting holes (10-9), the rotary magazine (10-7) is driven to rotate by the rotation of the rotary rod (6), different particle mounting holes (10-9) of the rotary magazine (10-7) are aligned to the particle through holes B (10-6), namely, after the particles in one particle mounting hole (10-9) are pushed out, the rotary magazine (10-7) is rotated, the particles in the corresponding particle mounting hole (10-9) are pushed out, the particles are rotated again, and the like, so that the particles in the different particle mounting holes (10-9) on the rotary magazine (10-7) are pushed out in sequence.

The particle mounting holes (10-9) arranged on the rotary magazine (10-7) are uniformly distributed according to the amount of the hole number +1, if the rotary magazine (10-7) is provided with seven particle mounting holes (10-9), the particles are uniformly distributed according to eight parts, the empty particle mounting holes are 9 particle mounting holes and the number of 9+1 is shown as an initial position in the figure, when the particles are implanted, the initial position push rod (8) cannot penetrate through the radioactive particle magazine (10), the particles can be pushed out from the adjacent particle mounting holes (10-9) only after rotating once, and the particles cannot be pushed out when rotating to the initial position after all the particles are pushed out, at the moment, medical staff can be reminded, the particles in the rotary magazine (10-7) are all used, the movement distances of the particle push rods (8) cannot be pushed out are different, and whether the particles can be pushed out or not is judged according to different pushing depths.

As a modification, the cross section of the rotating rod (6) is a regular polygon, and can be a quadrangle, a hexagon or an octagon.

The number of the edges of the cross section of the rotating rod (6) is consistent with the number of the particle mounting holes (10-9) of the rotating magazine (10-7), and the positions of the particle mounting holes are corresponding, namely the positions of the particle mounting holes (10-9) are consistent with the number of the surfaces of the rotating rod (6), and the particle mounting holes are in one-to-one correspondence.

When the particle mounting holes (10-9) are arranged according to the hole number +1, the number of the cross-sectional sides of the rotating rod (6) is also +1.

The surface of the polyhedron of the rotating rod is marked with numbers 0-n, n is the number of the particle mounting holes (10-9), and the n numbers correspond to the particle mounting holes on the rotating magazine (10-7) one by one, so that the operator is prompted about the current use condition of the particles in the particle magazine (10).

As an improvement, a rotating mechanism (11) is provided, and the rotating mechanism (11) comprises: the gun comprises ratchet wheels (11-8), ratchet teeth (11-1) and elastic pieces (11-2), wherein one ends of the ratchet teeth (11-1) are fixed on a gun body (1), the other ends of the ratchet teeth (11-1) are pressed on the ratchet wheels (11-8) through the elastic pieces (11-2), the ratchet wheels (11-8) and a rotary magazine (10-7) can form a whole, the ratchet wheels (11-8) are driven to rotate through a rotating rod (6), namely the rotating rod (6) rotates to drive the ratchet wheels (11-8) to rotate, the ratchet wheels (11-8) and the rotary magazine (10-7) are connected into a whole, and the rotary magazine (10-7) can also rotate along with the ratchet wheels. The number of teeth of the ratchet wheel (11-8) is equal to the number of the particle mounting holes (10-9) +1, namely the ratchet wheel (11-8) is involuted with a new mounting hole (10-9) on the upper side and the lower side of the rotary magazine (10-7) when rotating 1 tooth through hole B (10-6), and meanwhile the ratchet wheel (11-8), the ratchet wheel (11-1) and the elastic sheet (11-2) form a limiting mechanism, so that the ratchet wheel can only rotate towards one direction, the rotary magazine (10-7) is prevented from rotating, and the risk of planting particles in the air in operation is prevented.

The rotating mechanism (11) can be arranged on the gun body or on the radioactive particle bin.

As an improvement, the particle through hole A (2) is provided with a connector (3), namely the connector (3) is arranged on the gun body (1), the connector (3) is also provided with a particle through hole communicated with the particle through hole A (2), and the push rod (8) can penetrate through the through hole on the connector.

As an improvement, a fixing clamp (5) is further arranged, the fixing pin (7) is arranged on the fixing clamp (5), the fixing clamp (5) is connected with the gun body (1) through the rotating shaft (4), when the radioactive particle bin (10) needs to be installed/replaced, the tail end of the rotating shaft (4) is pressed, the fixing clamp (5) and the fixing pin (7) are ejected outwards, the fixing pin is separated from a locking hole in the radioactive particle bin (10), the fixing clamp (5) can rotate relative to the gun body (1) through the rotating shaft, after rotation, the fixing pin (7) deviates, the radioactive particle bin (10) can be sleeved on the rotating rod (6), after sleeving, the fixing clamp (5) is rotated to the original position, the tail end of the rotating shaft (4) is ejected from the rotating shaft groove by pressing of the fixing clamp (5), and meanwhile, the fixing pin (7) can continuously eject the rotary ejection bin (10-7).

The fixing pin (7) can be moved relative to the fixing clip (5), and the movement of the fixing pin (7) on the fixing clip (5) is limited by a screwing mechanism (16).

The fixing pin (7) is provided with a screwing mechanism (16), the fixing clamp (5) is provided with a through hole and a groove, the fixing pin (7) is arranged in the through hole, and the screwing mechanism (16) is arranged in the groove.

The particle release gun is characterized in that the fixing clamp (5) is rotationally connected to the gun body (1), the fixing pin (7) is fixed to the fixing clamp (5), the rotating rod (6) is connected to the rotating mechanism (11) and drives the rotating mechanism (11) to rotate, the push rod (8) is arranged on the axis of the fixing pin (7) and can move freely, the push rod can move towards the gun body (1) and penetrates out of the gun body (1), namely, the push rod (8) penetrates through a particle through hole B (10-6) and a rotating magazine (10-7) in the radioactive particle bin (10), particles in a particle mounting hole (10-9) in the rotating magazine (10-7) are pushed out, and finally the particles are pushed out from a particle through hole A (2) in the gun body (1).

As an improvement, the connector (3) is a threaded connector, different puncture needle connectors (12) can be connected to the connector in a threaded manner, and the first structure of the puncture needle connectors (12) is as follows: the puncture needle comprises a threaded connecting part and a nipple, wherein the threaded connecting part is used for being connected to a puncture needle connector (12), the nipple is arranged at the far end of the puncture needle and can be clamped on the puncture needle head, and the clamping connector of the puncture needle is clamped on the nipple to realize connection in actual use;

the second structure of the puncture needle connector (12) is as follows: comprises a threaded connection part used for being connected on a puncture needle connector (12), the far end is rod-shaped, the outer surface of the threaded connection part is provided with a clamping head, and when the special puncture needle is connected, the clamping head can be clamped in a corresponding groove of the puncture needle.

Through holes capable of penetrating the particles and the push rod (8) are formed in the puncture needle connectors (3).

The special puncture needle has the following structure: the needle sleeve comprises an inner needle sleeve and an outer needle sleeve, the inner needle sleeve comprises a needle sleeve connector (13-2) and a needle sleeve (13-1), the needle core comprises a needle core cap (13-3) and a needle core tube (13-7), namely the needle core tube (13-7) is inserted in the needle sleeve (13-1), the needle sleeve connector (13-2) is tubular, the surface of the needle sleeve connector is provided with a notch (13-9), the needle sleeve connector (13-2) is provided with at least two limiting clamping grooves (13-6) communicated with the notch (13-9), the needle core cap (13-3) is provided with a flip cover (13-4), the flip cover (13-4) is hinged on the needle core cap (13-3) and can rotate through a hinged point, the flip cover (13-4) is provided with a plug (9), the needle core tube (13-7) is hollow, the needle core cap (13-3) is provided with a channel which is connected with the needle core tube (13-7) in a hollow manner, the flip cover (13-4) rotates to block the needle sleeve (13-3), and the needle core cap (13-5) is provided with a clamping head (13-5) which can be clamped in the needle core cap (13-3), the position of the limiting clamping head (13-5) can be switched in the two limiting clamping grooves (13-6).

The needle sleeve connector (13-2) is connected with the needle sleeve (13-1), and the needle core cap (13-3) is connected with the needle core tube (13-7).

When the limiting clamping head (13-5) is arranged in different limiting clamping grooves (13-6), the needle core tube (13-7) can extend out or retract into the needle sleeve (13-1), when the limiting clamping head is close to the needle sleeve, the needle core tube extends out of the needle sleeve, and when the limiting clamping head is far away from the needle sleeve, the needle core tube retracts into the needle sleeve.

The end part of the needle core tube (13-7) is a wedge-shaped sharp part.

The end part of the needle cannula (13-1) is flat.

In actual use: the needle core is inserted in the needle sleeve, in an initial state, the limiting chuck (13-5) is arranged in a limiting clamping groove (13-6) close to the needle sleeve (13-1), at the moment, the needle core tube (13-7) is arranged in the needle sleeve (13-1), and the needle core tube (13-7) can be exposed out of the needle sleeve (13-1) to perform puncture operation; when the needle core tube (13-7) does not need to be punctured, the needle core cap (13-3) is rotated to move the limiting clamping head (13-5) out of the limiting clamping groove (13-6), then the needle core cap (13-3) is moved to a proper position in the direction far away from the needle sleeve (13-1), the needle core cap (13-3) is rotated to transfer the limiting clamping head (13-5) into the limiting clamping groove (13-6) far away from the needle sleeve (13-1), and at the moment, the needle core tube (13-7) retracts into the needle sleeve (13-1). By switching the two states, the puncture state and the tube placing state can be selected.

Because the needle core tube (13-7) is hollow and is provided with a communicating channel with the needle core cap, the related operation can be directly finished through the channel when special operations such as injecting liquid medicine to a human body, taking materials by puncture biopsy or planting particles and the like are required in the operation; meanwhile, in order to avoid complications such as infection, pneumothorax, air embolism and the like caused by long-time communication between the inside of a human body and the outside and prevent body fluids such as blood and the like from overflowing outwards through the channel, the plug (9) can be plugged at one end of the channel by rotating the cover plates (13-4) without special operation, so that the channel of the needle core tube is plugged.

The rotary turnover cover (13-4) and the limiting clamping head (13-5) are overlapped and can be clamped into the limiting clamping groove (13-6), namely the turnover cover and the limiting clamping head can be clamped into the limiting clamping groove together.

The surface of the needle cannula (13-1) is provided with a depth scale. The depth scale is scale marks, and the puncture depth of the puncture needle can be known through the depth scale.

The invention also discloses a radioactive particle bin, which has the following specific structure: the particle-free rotary bullet box comprises a front cover (10-2), a rotary bullet bin (10-7) and a rear cover (10-3), wherein the rotary bullet bin (10-7) is arranged in an area formed by wrapping the front cover (10-2) and the rear cover (10-3), a plurality of particle mounting holes (10-9) are formed in the rotary bullet bin (10-7), the front cover (10-2), the rotary bullet bin (10-7) and the rear cover (10-3) are respectively provided with an axle center hole (10-4) capable of penetrating through a rotary rod (6), only the rotary bullet bin (10-7) can synchronously rotate with the rotary rod (6), namely a key groove (10-5) is formed in the rotary bullet bin (10-7), a key capable of being clamped in the key groove (10-5) is arranged on the rotary rod (6), a positioning hole (10-1) is further formed in the front cover (10-2), a locking hole (10-8) is formed in the rear cover (10-3), and a positioning hole (10-1) is formed in the outer surface of the front cover (10-2) and a locking hole (10-8) is formed in the rear cover (3); the positioning hole (10-1) can be clamped on the positioning bulge (14) of the gun body (1), and the fixing pin (7) can be propped in the locking hole (10-8).

The front cover (10-2) and the rear cover (10-3) are connected with each other through a cover body connecting piece (10-10).

In actual use: a particle bin formed by the front cover (10-2), the rotary magazine (10-7) and the rear cover (10-3) is sleeved on the rotary rod (6), and because only the rotary magazine (10-7) is provided with a key groove, the rotary magazine (10-7) can only be driven to rotate by the protrusion on the rotary rod (6). The size of an axle center hole (10-4) of the front cover (10-2) is slightly larger, the protrusion of the rotating rod (6) is not contacted with the front cover (10-2), or a key groove is also arranged on the axle center hole (10-4), and when the rotating rod (6) is sleeved, the rotating rod (6) is not provided with the protrusion at the front cover (10-2) and can not drive the front cover to rotate.

As an improvement, a ratchet wheel (11-8) is arranged on the rotary magazine (10-7), the ratchet wheel (11-8) is arranged on one side close to the front cover (10-2), and the ratchet wheel (11-8) can penetrate through an axle center hole (10-4) in the front cover (10-2) and is in contact with a ratchet (11-1) in the gun body (1).

The ratchet wheel (11-8) is also provided with a shaft center hole (10-4) which can penetrate through the rotating rod (6), and the shaft center hole (10-4) on the ratchet wheel (11-8) is provided with a key groove (10-5).

As a further improvement, an extension cover (10-11) is further arranged, the extension cover (10-11) is arranged between the front cover (10-2) and the rear cover (10-3), the length of the particle bin can be extended by arranging at least one group of extension covers (10-11), the extension cover (10-11) and the front cover (10-2) and the rear cover (10-3) can be connected through a cover body connecting piece (10-10) or can be connected in a threaded mode, the number of the rotary magazine (10-7) is correspondingly increased, the rotary magazine (10-7) can be mutually attached and movably connected, and the rotary magazine (10-7) can also be connected through a bayonet (10-12).

Drawings

Fig. 1 is a schematic perspective view of a particle gun according to embodiment 1 of the present invention.

FIG. 2 is a schematic view of a particle gun according to embodiment 1 of the present invention

Fig. 3 is a schematic structural view of a particle bin rotation mechanism of a particle gun according to embodiment 2 of the present invention.

Fig. 4 is a schematic perspective view of a particle gun according to embodiment 3 of the present invention.

Fig. 5 is a schematic perspective view of a particle gun according to embodiment 3 of the present invention.

Fig. 6 is a schematic sectional view of a particle gun according to example 3 of the present invention.

Fig. 7 is a schematic perspective view of a particle gun according to embodiment 4 of the present invention.

Fig. 8 is a schematic perspective view of a particle gun according to embodiment 4 of the present invention.

Fig. 9 is a schematic sectional view of a particle gun according to example 4 of the present invention.

Fig. 10 is a schematic perspective view of a particle gun according to example 5 of the present invention.

Fig. 11 is a schematic perspective view of a particle gun according to embodiment 5 of the present invention.

FIG. 12 is a schematic sectional view showing a particle gun according to example 5 of the present invention.

Fig. 13 is a schematic perspective view of a particle gun according to embodiment 6 of the present invention.

Fig. 14 is a schematic perspective view of a particle gun according to example 6 of the present invention.

Fig. 15 is a schematic sectional view showing a particle gun according to example 6 of the present invention.

Fig. 16 is a schematic perspective view of a particle bin in embodiment 7 of the present invention.

Fig. 17 is a schematic front view of a particle bin according to embodiment 7 of the present invention.

FIG. 18 is a schematic cross-sectional structural view of a particle chamber in example 7 of the present invention.

FIG. 19 is a schematic sectional view of a particle chamber in example 7 of the present invention.

Fig. 20 is a schematic perspective view of a particle bin in embodiment 8 of the present invention.

Fig. 21 is a schematic front view of a particle bin according to embodiment 8 of the present invention.

Fig. 22 is a schematic cross-sectional structure view of a particle bin in embodiment 8 of the present invention.

Fig. 23 is a schematic perspective view of a particle chamber in embodiment 9 of the present invention.

Fig. 24 is a schematic front view of a particle bin according to embodiment 9 of the present invention.

Fig. 25 is a schematic perspective view of a particle chamber in embodiment 10 of the present invention.

Fig. 26 is a schematic front view of a particle bin according to embodiment 10 of the present invention.

Fig. 27 is a schematic sectional view of a particle bin in embodiment 10 of the present invention.

Fig. 28 is a schematic perspective view of a rotary cartridge body of embodiment 10 of the present invention.

Figure 29 is a schematic front elevational view of a rotary cartridge body constructed in accordance with example 10 of the present invention.

Fig. 30 is a schematic cross-sectional structural view of a rotary cartridge body of example 10 of the present invention.

FIG. 31 is a schematic perspective view of a puncture needle used in conjunction with a particle gun according to embodiment 4 of the present invention

FIG. 32 is a schematic perspective view of a puncture needle sheath used with the particle gun in accordance with embodiment 4 of the present invention

FIG. 33 is a schematic perspective view of a puncture needle core used in association with a particle gun in embodiment 4 of the present invention

Shown in the figure: 1 is a gun body, 2 is a particle through hole A,3 is a connector, 4 is a rotating shaft, 5 is a fixing clip, 6 is a rotating rod, 7 is a fixing pin, 8 is a push rod, 9 is a handle, 10 is a radioactive particle bin, 10-1 is a positioning hole, 10-2 is a front cover, 10-3 is a rear cover, 10-4 is a shaft center hole, 10-5 is a key groove, 10-6 is a particle through hole B,10-7 is a rotating cartridge magazine, 10-8 is a locking hole, 10-9 is a particle mounting hole, 10-10 is a cover body connector, 10-11 is an extending cover, 10-12 is a bayonet lock, 11 is a rotating mechanism, 11-1 is a ratchet, 11-2 is an elastic sheet, 11-3 is a positioning hole, 11-5 is a key groove, 11-7 is a ratchet fixing shaft, 11-8 is a ratchet fixing shaft, 12 is a connector, 13 is a sleeve, 13-1 is a needle sleeve, 13-2 is a needle cap, 13-4 is a needle sleeve, 13-5 is a turnover cover, 13-6 is a limiting cover, 13-6 is a needle sleeve, 13-7 is a needle handle cover, 13-6 is a limiting sleeve, 13-7 is a needle handle opening of a needle sleeve, 13-16 is a needle handle, and a needle handle is a needle core-17.

Detailed Description

The present invention is described in further detail by the following examples, and it is apparent that the described examples are only a part of the examples of the present invention, and not all of the examples. 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: referring to fig. 1-2, which is a schematic structural view of embodiment 1 of the present invention, this embodiment discloses a radioactive particle implantation gun, including a gun body 1, the gun body 1 is provided with a particle through hole A2, a fixing pin 7, a rotating rod 6 and a push rod 8, the particle through hole A2 penetrates through two sides of the gun body 1, the fixing pin 7, the rotating rod 6 and the push rod 8 are provided at one side thereof, the fixing pin 7 is provided with a through hole capable of penetrating through the push rod 8, the push rod 8 is disposed in the through hole and capable of moving freely, the rotating rod 6 is rotatably connected to the gun body 1, the rotating rod 6 is capable of being sleeved with a radioactive particle bin 10, the radioactive particle bin 10 is disposed between the fixing pin 7 and the gun body 1, the fixing pin 7 tightly fixes the radioactive particle bin 10 on the gun body 1, the position where the radioactive particle bin 10 is fixed is a magazine area, the rotating rod 8 can move from the fixing pin 7 to the particle through hole A2 and extend from the rotating rod A2 when moving, the rotating rod 10 is provided with a particle through hole B10-6 and a rotating rod 10-10, the rotating rod 10 is provided with a rotating particle mounting hole 9 for mounting the radioactive particle bin 10, the rotating rod 6-10, the rotating particle mounting hole 9 is provided on the rotating rod 6; when the particles are needed to be implanted, the push rod 8 is only needed to be moved, the particles arranged in the particle mounting hole 10-9 on the rotary magazine 10-7 are pushed out from the rotary magazine 10-7 through the moving push rod 8, and the pushed particles are pushed out from the particle through hole A2 on the gun body 1.

In actual use: the method comprises the steps that particles to be implanted are installed in particle installation holes 10-9 of a rotary magazine 10-7, then the radioactive particle magazine 10 is sleeved on a rotary rod 6, synchronous rotation is achieved between the rotary magazine 10-7 and the rotary rod 6 through a key groove 10-5 and a key, namely, an axial hole 10-4 is formed in the rotary magazine 10-7, the axial hole 10-4 is connected onto the rotary rod 6 in an inserting mode, a key groove is formed in the axial hole 10-4, a protrusion capable of being clamped in the key groove 10-5 is arranged on the rotary rod, and after the rotating rod is connected in the inserting mode, the protrusion on the rotary rod 6 is clamped in the key groove of the rotary magazine 10-7 to drive the rotary magazine 10-7 to rotate.

The gun body 1 is provided with a holding fingerstall 17. In actual use, a doctor holds the gun body through the holding finger sleeve.

The rotary magazine 10-7 can be provided with a plurality of particle mounting holes 10-9, the rotary magazine 10-7 is driven to rotate through the rotation of the rotary rod 6, different particle mounting holes 10-9 of the rotary magazine 10-7 are aligned with the particle through hole B10-6, namely after a particle in one particle mounting hole 10-9 is pushed out, the rotary magazine 10-7 is rotated, after a particle in the corresponding particle mounting hole 10-9 is pushed out, the rotary magazine is rotated again, and the like, the particles in different particle mounting holes 10-9 on the rotary magazine 10-7 are pushed out in sequence.

The particle mounting holes 10-9 arranged on the rotary magazine 10-7 are uniformly distributed according to the hole number +1, if seven particle mounting holes 10-9 are arranged on the rotary magazine 10-7, the particle mounting holes are uniformly distributed according to 8 numbers, the empty particle is an initial position, when the particles are implanted, the push rod 8 at the initial position cannot penetrate through the radioactive particle magazine 10, the particles can be pushed out from the adjacent particle mounting holes 10-9 only after the push rod rotates once, and the particles cannot be pushed out when the push rod rotates to the initial position after all the particles are pushed out, so that medical personnel can be reminded, the particles in the rotary magazine 10-7 are all used, the movement distances of the push rods 8 for pushing out the particles are different, and whether the particles can be pushed out is judged according to different pushing depths.

As a modification, the cross section of the rotating rod 6 is a regular polygon, which may be a quadrangle, a hexagon or an octagon.

The number of the edges of the cross section of the rotating rod 6 is consistent with the number of the particle mounting holes 10-9 of the rotating magazine 10-7, and the positions of the particle mounting holes 10-9 are corresponding, namely the positions of the particle mounting holes 10-9 are consistent with the number of the surfaces of the rotating rod 6, and the particle mounting holes are in one-to-one correspondence.

When the particle mounting holes 10-9 are arranged by the number of holes +1, the number of cross-sectional sides of the rotary rod 6 is also +1.

Example 2: referring to fig. 3, which is a schematic structural diagram of embodiment 2 of the present invention, compared with embodiment 1, the present embodiment is different in that: still be equipped with rotary mechanism 11, rotary mechanism 11 contains: the particle implantation device comprises a ratchet wheel 11-8, a ratchet 11-1 and an elastic sheet 11-2, wherein one end of the ratchet 11-1 is fixed on a gun body, the other end of the ratchet 11-1 is pressed on the ratchet 11-8 by the elastic sheet 11-2, the ratchet 11-8 and a rotary magazine 10-7 can form a whole, the ratchet 11-8 is driven to rotate through a rotating rod 6, namely the rotating rod 6 rotates to drive the ratchet 11-8 to rotate, the ratchet 11-8 and the rotary magazine 10-7 are connected into a whole, the rotary magazine 10-7 can also rotate, the number of teeth of the ratchet 11-8 is equal to the number of particle mounting holes 10-9 plus 1, the number of teeth of the ratchet 11-8 is equal to the number of tooth through holes B10-6 which are matched with a new mounting hole 10-9 on the upper side and the lower side of the rotary magazine 10-7 every rotation of the ratchet 11-8, and the ratchet 11-1 and the elastic sheet 11-2 form a limiting mechanism, so that the ratchet can only rotate in one direction to prevent the rotary magazine 10-7 from rotating, and the risk of empty implantation of particles in operation.

Example 3: referring to fig. 4 to 6, which are schematic structural views of embodiment 3 of the present invention, compared with embodiment 1, the present embodiment is different in that: particle through-hole A2 department is equipped with connector 3, and connector 3 sets up on the rifle body 1 promptly, also is equipped with the particle through-hole with particle through-hole A2 intercommunication on the connector 3, and push rod 8 can run through the through-hole on the connector.

As an improvement, the connector 3 is a screw connector, different puncture needle connectors 12 can be screwed on the connector, and the structure of the puncture needle connector 12 is as follows: the puncture needle comprises a threaded connecting part and a nipple, wherein the threaded connecting part is used for being connected to the connector 3, the nipple is arranged at the far end of the connector and can be clamped on a needle head of the puncture needle, and the clamping connector of the puncture needle is clamped on the nipple to realize connection in actual use;

example 4: referring to fig. 7 to 9, which are schematic structural diagrams of embodiment 4 of the present invention, compared with embodiment 1, the present embodiment is different in that: particle through-hole A2 department is equipped with connector 3, connector department can threaded connection pjncture needle joint 12, the structure of pjncture needle joint is as follows: comprises a threaded connection part for connecting to the puncture needle connector 12, the distal end is rod-shaped, the outer surface of the distal end is provided with a clamping head, and when the special puncture needle is connected, the clamping head can clamp the needle in the corresponding groove of the puncture needle.

Through holes which can pass through the particles and the push rod 8 are formed in the puncture needle connectors 3.

Example 5: referring to fig. 10 to 12 and fig. 31 to 33, which are schematic structural views of embodiment 5 of the present invention, the present embodiment is different from embodiment 1 in that: the structure of the puncture needle dedicated for use in this embodiment is as follows: the needle sleeve comprises an inner needle sleeve and an outer needle sleeve, the needle sleeve comprises a needle sleeve connector 13-2 and a needle sleeve 13-1, the needle sleeve comprises a needle core cap 13-3 and a needle core tube 13-7, namely the needle core tube 13-7 is inserted into the needle sleeve 13-1, the needle sleeve connector 13-2 is tubular, the surface of the needle sleeve connector 13-2 is provided with a notch 13-9, the needle sleeve connector 13-2 is provided with at least two limiting clamping grooves 13-6 communicated with the notch 13-9, the needle core cap 13-3 is provided with a flip cover 13-4, the flip cover 13-4 is hinged on the needle core cap 13-3 and can rotate at a hinged point, the flip cover 13-4 is provided with a plug 9, the needle core tube 13-7 is hollow, the needle core cap 13-3 is provided with a channel connected with the needle core tube 13-7 in a hollow manner, the flip cover 13-4 rotates to plug the channel of the needle core cap 13-3, the needle core cap 13-3 is provided with a limiting clamping head 13-5, the limiting clamping head 13-5 can be clamped in the needle sleeve 13-6, and the needle sleeve connector 13-3 can move in a limiting clamping groove 13-6 position when the needle core connector 13-6 is replaced.

The needle hub connector 13-2 and the needle cannula 13-1 are connected with each other, and the needle core cap 13-3 and the needle core tube 13-7 are connected with each other.

When the limiting clamping head 13-5 is in different limiting clamping grooves 13-6, the needle core tube 13-7 can extend out of or retract into the needle sleeve 13-1, when the limiting clamping head is close to the needle sleeve, the needle core tube extends out of the needle sleeve, and when the limiting clamping head is far away from the needle sleeve, the needle core tube retracts into the needle sleeve.

The end of the needle core tube 13-7 is a wedge-shaped sharp part.

The end of the needle cannula 13-1 is flat.

In actual use: the needle core is inserted in the needle sleeve, in an initial state, the limiting chuck 13-5 is arranged in the limiting clamping groove 13-6 close to the needle sleeve 13-1, at the moment, the needle core tube 13-7 is arranged in the needle sleeve 13-1, and the needle core tube 13-7 is exposed out of the needle sleeve 13-1 to perform puncture operation; when the needle core tube 13-7 does not need to be punctured, the needle core cap 13-3 is rotated to move the limiting chuck 13-5 out of the limiting clamping groove 13-6, then the needle core cap 13-3 is moved to a proper position in the direction far away from the needle sleeve 13-1, the needle core cap 13-3 is rotated to rotate the limiting chuck 13-5 into the limiting clamping groove 13-6 far away from the needle sleeve 13-1, and at the moment, the needle core tube 13-7 retracts into the needle sleeve 13-1. By switching the two states, the puncture state and the tube placing state can be selected.

Because the needle core tube 13-7 is hollow and is provided with a communicating channel with the needle core cap, the related operation can be directly finished through the channel when special operations such as injecting liquid medicine into a human body, taking materials by puncture biopsy or planting particles and the like are required in the operation; meanwhile, in order to avoid complications such as infection, pneumothorax, air embolism and the like caused by long-time communication between the inside of a human body and the outside and prevent body fluids such as blood and the like from overflowing outwards through the channel, the plug 9 can be plugged at one end of the channel by rotating the cover plate 13-4 without special operation, so that the channel of the needle core tube is plugged.

The rotary turnover cover 13-4 and the limit clamp 13-5 are overlapped and can be clamped into the limit clamp groove 13-6, namely the turnover cover and the limit clamp can be clamped into the limit clamp groove together.

The surface of the needle cannula 13-1 is provided with a depth scale. The depth scale is scale marks, and the puncture depth of the puncture needle can be known through the depth scale.

Example 6: referring to fig. 13 to 15, which are schematic structural views of embodiment 6 of the present invention, the present embodiment is different from embodiment 1 in that: the radioactive particle storage device is characterized in that a fixing clamp 5 is further arranged, a fixing pin 7 is arranged on the fixing clamp 5, the fixing clamp 5 is connected with the gun body 1 through a rotating shaft 4, when the radioactive particle storage 10 needs to be installed/replaced, the tail end of the rotating shaft 4 is pressed, the fixing clamp 5 and the fixing pin 7 are ejected outwards, the fixing pin is separated from a locking Kong Suozhi hole in the radioactive particle storage 10, the fixing clamp 5 can rotate relative to the gun body 1 through the rotating shaft, after rotation, the fixing pin 7 deviates, the radioactive particle storage 10 can be sleeved on a rotating rod 6, after sleeving, the fixing clamp 5 is rotated to the original position, the tail end of the rotating shaft 4 is ejected from a rotating shaft groove through pressing of the fixing clamp 5, and meanwhile, the fixing pin 7 can continuously eject the rotating elastic storage 10-7.

The fixing pin 7 is movable relative to the fixing clip 5 and the movement of the fixing pin 7 on the fixing clip 5 is limited by a screwing mechanism 16.

The fixing pin 7 is provided with a screwing mechanism 16, the fixing clamp 5 is provided with a through hole and a groove, the fixing pin 7 is arranged in the through hole, and the screwing mechanism 16 is arranged in the groove.

Fixing clip 5 rotates to be connected on the rifle body 1, fixed pin 7 is fixed on fixing clip 5, rotary rod 6 is connected on rotary mechanism 11 to drive rotary mechanism 11 and rotate, 7 axles of fixed pin are arranged in to push rod 8, and can freely move and to the movement of the rifle body 1 and wear out from the rifle body 1, promptly be equipped with particle through-hole A2 on the rifle body 1, push rod 8 is worn out from particle through-hole A2.

The gun body 1 is provided with a holding finger sleeve 17, when the puncture person operates, the puncture needle particle needle can be clamped by a little finger and a ring finger of one hand, a middle finger and a thumb pass through the holding finger sleeve 14 to hold the puncture gun under the assistance of an index finger, and the other hand operates the rotating rod 6 and the push rod 8 to implant particles.

Example 7: referring to fig. 16 to 19, which are schematic structural views according to embodiment 7 of the present invention, this embodiment discloses a radioactive particle bin, which has the following specific structure: the particle feeder comprises a front cover 10-2, a rotary magazine 10-7 and a rear cover 10-3, wherein the rotary magazine 10-7 is arranged in an area formed by wrapping the front cover 10-2 and the rear cover 10-3, the rotary magazine 10-7 is provided with a plurality of particle mounting holes 10-9, the front cover 10-2, the rotary magazine 10-7 and the rear cover 10-3 are respectively provided with an axial hole 10-4 capable of penetrating through a rotary rod 6, only the rotary magazine 10-7 is provided with a key groove 10-5, the front cover 10-2 is also provided with a positioning hole 10-1, the rear cover 10-3 is provided with a locking hole 10-8, the positioning hole 10-1 is arranged on the outer surface of the front cover 10-2, and the locking hole 10-8 is arranged on the outer surface of the rear cover 10-3; the positioning hole 10-1 can be clamped on the positioning bulge 14 of the gun body 1, and the fixing pin 7 can be propped in the locking hole 10-8.

The front cover 10-2 and the rear cover 10-3 are connected to each other by a cover body connecting member 10-10.

In actual use: the particle bin formed by the front cover 10-2, the rotary magazine 10-7 and the rear cover 10-3 is sleeved on the rotary rod 6, and because only the rotary magazine 10-7 is provided with a key groove, the rotary magazine 10-7 can only be driven to rotate by the bulge on the rotary rod 6. The size of the axle center hole 10-4 of the front cover 10-2 is slightly larger, the protrusion of the rotating rod 6 is not contacted with the front cover 10-2, or the axle center hole 10-4 is also provided with a key groove, when the rotating rod 6 is sleeved, the rotating rod 6 is not provided with the protrusion at the front cover 10-2 and can not drive the front cover to rotate.

Example 8: referring to fig. 20 to 22, which are schematic structural views of embodiment 8 of the present invention, compared with embodiment 7, this embodiment is different in that a ratchet 11-8 is provided on the rotary magazine 10-7, the ratchet 11-8 is provided on a side close to the front cover 10-2, and the ratchet 11-8 can pass through a spindle hole 10-4 on the front cover 10-2 and contact with a ratchet 11-1 on the gun body 1.

Example 9: referring to fig. 23 to 24, which are schematic structural views of embodiment 9 of the present invention, compared with embodiment 7, the present embodiment is different in that the front cover 10-2 of the present embodiment is cup-shaped, the volume of the rotating magazine 10-7 inside the same increases proportionally with the front cover, the length of the particle mounting hole 10-9 on the rotating magazine 10-7 increases accordingly, and a plurality of particles can be accommodated, which is significant in that particle chains can be combined according to a set treatment plan and placed in the particle mounting hole 10-9, the radioactive particle magazine 10 can play a role of protecting the particle chains, preventing the particle chains from being damaged and deformed during storage, transfer and sterilization, and meanwhile, the radioactive particle magazine 10 can also form a radiation protection layer, preventing the particles or gamma rays released from the particle chains in the particle mounting hole 10-9 from overflowing, and reducing radiation exposure caused by operators and people in the surrounding environment.

When the particle chain is used, the particle chains on each puncture path are combined according to a particle implantation treatment plan, then the particle chains are placed in different mounting holes 10-9 in a radioactive particle bin 10 according to an implantation sequence and are disinfected for later use, after a puncture needle is inserted into a focus in a particle implantation operation, the radioactive particle bin 10 is combined with a gun body 1, a puncture needle connector 12 is connected with a needle sleeve connector 13-2, the particle chains are pushed into the needle sleeve 13-1 by using a push rod 8, the needle sleeve 13-1 is pulled out while the particle chains are lightly pushed by using the push rod 8, the particle chains are retained in the focus, then the rotating rod 6 is rotated after being sequentially connected with a next puncture needle, and the implantation actions of the previous particle mounting hole 10-9 and the particle through hole B10-6 of the rotating magazine 10-7 and the particle through hole B10-6 are repeated to complete the operation.

Example 10: referring to fig. 25 to 30, which are schematic structural diagrams of embodiment 10 of the present invention, compared with embodiment 7, this embodiment is different in that an extension cover 10-11 is further provided, the extension cover 10-11 is disposed between the front cover 10-2 and the rear cover 10-3, the length of the particle bin can be extended by disposing at least one set of extension covers 10-11, the extension cover 10-11 and the front cover 10-2 and the rear cover 10-3 can be connected by a cover body connecting member 10-10, or can be connected by a screw thread manner, the number of the rotary magazine 10-7 is correspondingly increased, the rotary magazine 10-7 can be movably connected by being attached to each other, or can be connected by a bayonet 10-12.

The embodiment can combine the particle chains with any length according to the formulated treatment plan, and combine the radioactive particle bins 10 adapted to the particle chains according to the length of the particle chains, thereby facilitating the operation of doctors during the operation.

Claims (10)

1. A radioactive particle bin, comprising: the particle feeder comprises a front cover (10-2), a rotary magazine (10-7) and a rear cover (10-3), wherein the rotary magazine (10-7) is arranged in an area formed by wrapping the front cover (10-2) and the rear cover (10-3), a plurality of particle mounting holes (10-9) are formed in the rotary magazine (10-7), the front cover (10-2), the rotary magazine (10-7) and the rear cover (10-3) are respectively provided with an axle center hole (10-4) capable of penetrating through a rotary rod (6), only the rotary magazine (10-7) can synchronously rotate with the rotary rod (6), the front cover (10-2) is further provided with a positioning hole (10-1), the rear cover (10-3) is provided with a locking hole (10-8), the positioning hole (10-1) is arranged on the outer surface of the front cover (10-2), and the locking hole (10-8) is arranged on the outer surface of the rear cover (10-3); the positioning hole (10-1) is used for being clamped on a positioning bulge (14) of the gun body (1), and the locking hole (10-8) can be inserted by a fixing pin (7).

2. The radioactive particle magazine of claim 1, wherein: the rotary magazine (10-7) is provided with a ratchet wheel (11-8), the ratchet wheel (11-8) is arranged on one side close to the front cover (10-2), the ratchet wheel (11-8) can penetrate through a shaft center hole (10-4) in the front cover (10-2), the ratchet wheel (11-8) is also provided with a shaft center hole (10-4) capable of penetrating through the rotary rod (6), and a key groove (10-5) is arranged in the shaft center hole (10-4) in the ratchet wheel (11-8).

3. The radioactive particle magazine of claim 1, wherein: the particle bin is provided with an extension cover (10-11), the extension cover (10-11) is arranged between a front cover (10-2) and a rear cover (10-3), the length of the particle bin can be extended by arranging the extension cover (10-11), and the extension cover (10-11) is connected with the front cover (10-2) and the rear cover (10-3) through a cover body connecting piece (10-10); or the rotary magazines (10-7) are connected in a threaded mode, the number of the rotary magazines (10-7) is correspondingly increased, and the rotary magazines (10-7) are mutually attached and connected or connected through bayonet locks (10-12).

4. The radioactive particle storage of claim 1, 2 or 3, wherein: n particle mounting holes (10-9) are formed in the rotary magazine (10-7), and all the particle mounting holes (10-9) are uniformly distributed in the rotary magazine (10-7) according to the number of N +1.

5. A radioactive particle implanting gun, comprising: including the rifle body (1), its characterized in that: the particle gun is characterized in that at least a particle through hole A (2), a fixing pin (7), a rotating rod (6) and a push rod (8) are arranged on the gun body (1), the fixing pin (7) is provided with a through hole capable of penetrating through the push rod (8), the push rod (8) is arranged in the through hole and can move freely, the rotating rod (6) is rotatably connected to the gun body (1), a radioactive particle bin (10) can be sleeved on the rotating rod (6), the radioactive particle bin (10) is located between the fixing pin (7) and the gun body (1) after being sleeved, the fixing pin (7) tightly presses and fixes the radioactive particle bin (10) on the gun body (1), the push rod (8) can move towards the particle through hole A (2) from the fixing pin (7) and extends out of the particle through hole A (2), the particles in the bin are pushed out through the radioactive particle bin (10) when extending out, and the radioactive particle bin (10) uses the radioactive particle bin as claimed in claims 1-4.

6. The radioactive particle implantation gun of claim 5, wherein: the cross section of the rotating rod (6) is in a regular polygon shape.

7. The radioactive particle implantation gun of claim 5, wherein: is provided with a rotating mechanism (11), the rotating mechanism (11) comprises: the gun comprises ratchet wheels (11-8), ratchet teeth (11-1) and elastic pieces (11-2), wherein one ends of the ratchet teeth (11-1) are fixed on a gun body (1), the other ends of the ratchet teeth (11-1) are pressed on the ratchet wheels (11-8) through the elastic pieces (11-2), the ratchet wheels (11-8) and a rotary magazine (10-7) can form a whole, the ratchet wheels (11-8) are driven to rotate through a rotating rod (6), namely the rotating rod (6) rotates to drive the ratchet wheels (11-8) to rotate, the ratchet wheels (11-8) and the rotary magazine (10-7) are connected into a whole, and the rotary magazine (10-7) can also rotate along with the ratchet wheels.

8. The radioactive particle implantation gun of claim 7, wherein: the number of teeth of the ratchet wheel (11-8) is equal to the number of the particle mounting holes (10-9) +1, namely the ratchet wheel (11-8) is matched with a new mounting hole (10-9) on the upper side and the lower side of the rotary magazine (10-7) when rotating one tooth particle through hole B (10-6), and meanwhile the ratchet wheel (11-8), the ratchet teeth (11-1) and the elastic sheet (11-2) form a limiting mechanism, so that the ratchet wheel can only rotate towards one direction, and the rotary magazine (10-7) is prevented from rotating.

9. The radioactive particle implantation gun of claim 5, wherein: the radioactive particle storage device is characterized by further comprising a fixing card (5), wherein the fixing pin (7) is arranged on the fixing card (5), the fixing card (5) is connected with the gun body (1) through the rotating shaft (4), when the radioactive particle storage bin (10) needs to be installed or replaced, the tail end of the rotating shaft (4) is pressed, the fixing card (5) and the fixing pin (7) are ejected outwards, the fixing pin is separated from a locking hole in the radioactive particle storage bin (10), the fixing card (5) can rotate relative to the gun body (1) through the rotating shaft, after rotation, the fixing pin (7) deviates, the radioactive particle storage bin (10) is sleeved on the rotating rod (6), after sleeving, the fixing card (5) is rotated back to the original position, the tail end of the rotating shaft (4) is ejected from the rotating shaft groove by pressing of the fixing card (5), and meanwhile, the fixing pin (7) can continuously abut against the rotating elastic bin (10-7); the fixing pin (7) can be moved relative to the fixing clip (5), and the movement of the fixing pin (7) on the fixing clip (5) is limited by a screwing mechanism (16).

10. The radioactive particle implantation gun of claim 5, wherein: still be equipped with connector (3), establish in particle through-hole A (2) department in connector (3), and the connector is threaded connection, can different pjncture needle joint (12) of threaded connection on the connector, the first structure of pjncture needle joint (12) is as follows: the puncture needle comprises a threaded connecting part and a nipple, wherein the threaded connecting part is used for being connected to a puncture needle connector (12), the nipple is arranged at the far end of the puncture needle and can be clamped on the puncture needle head, and the clamping connector of the puncture needle is clamped on the nipple to realize connection in actual use; alternatively, the first and second electrodes may be,

the second structure of the puncture needle connector (12) is as follows: comprises a threaded connecting part which is used for connecting a puncture needle connector (12), the far end of the threaded connecting part is rod-shaped, the outer surface of the threaded connecting part is provided with a clamping head, and when the special puncture needle is connected, the clamping head can be clamped in a corresponding groove of the puncture needle; through holes capable of penetrating the particles and the push rod (8) are formed in the puncture needle connectors (3).

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