CN219110672U - Radioactive particle implantation gun - Google Patents

Abstract

The utility model discloses a radioactive particle implantation gun, which comprises a gun body (1) and is characterized in that: be equipped with particle through-hole A (2), fixed pin (7), rotary rod (6) and push rod (8) on rifle body (1), be equipped with the through-hole that can pass push rod (8) on fixed pin (7), push rod (8) are arranged in this through-hole and can free movement, rotary rod (6) rotatable connection is on rifle body (1), can overlap on rotary rod (6) establish radioactive particle storehouse (10), cover back radioactive particle storehouse (10) are located between fixed pin (7) and rifle body (1), and fixed pin (7) press-fastening radioactive particle storehouse (10) are on rifle body (1), can follow fixed pin (7) to particle through-hole A (2) direction remove when push rod (8) remove to stretch out from particle through-hole A (2), need pass through radioactive particle storehouse (10) and release the particle in the storehouse during the extension.

Description

Radioactive particle implantation gun

Technical Field

The utility model belongs to the field of medical appliances, 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 has the advantages of small operation trauma, high treatment radiation dose, small peripheral tissue damage and the like for treating malignant tumors, and is more and more paid attention to clinicians, and is widely applied to the treatment of cancers such as prostate cancer, lung cancer, liver cancer, pancreatic cancer, breast cancer and 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 parenchymal tumor tissue according to a preset treatment plan, and retain the radioactive source for a long time, and utilize gamma rays released by the spontaneous decay of the radionuclide to continuously irradiate tumor cells to cause the damage of the tumor cells, thereby effectively destroying focus tissues and inhibiting the proliferation of the tumor cells.

The radioactive particles are small radioactive sources, the radioactive isotopes are arranged in a titanium tube, two ends of the radioactive source are welded by laser or electron beam technology to form a sealing source, the radioactive particles which are widely used at present are generally 0.8mm in outer diameter and 4.5mm in length, and the radioactivity is generally 0.1-1 mCi.

In early stages of radioactive particle implantation treatment, the operator often uses forceps to hold the particles directly into the needle, which undoubtedly increases the occupational radiation exposure of the operator and is also very prone to error leading to dropping or even loss of the radioactive particle source. A magazine for storing particles and a particle implantation gun for easy handling are thus proposed.

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

The structure is relatively simple, but has a plurality of problems, firstly, the size of a bullet storage groove of the magazine is very small due to the small size of the particle source, so that the loading of particles is a very fine operation with very low fault tolerance, and the size of the bullet storage groove of the magazine is slightly larger than the size of the particle source due to the consideration of the size tolerance of the particle source, so that the particle source often shakes in the bullet storage groove and even is blocked in the bullet storage groove during loading, and all the particles need to be poured out and refilled, thereby not only wasting time, but also increasing occupational radiation exposure of hands of operators; 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 stained with blood or tissues 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 an open bullet groove, the bullet box and the particle gun are often made of expensive and heavy metal materials for repeated use in consideration of radiation safety, the operation is performed in a fault manner due to fatigue of hands of operators caused by heavier instruments in the use process, and the risk of surgical exposure infection is increased undoubtedly because the through hole structure with fine and particularly fine structure can not be cleaned in place in the cleaning and disinfecting work after the use.

Therefore, the applicant provides a radioactive particle implantation gun which has a simple structure and good use effect.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the radioactive particle bin and the radioactive particle implantation gun which are simple in structure and good in use effect.

In order to achieve the above object, the present utility model provides the following technical solutions:

a radioactive particle implantation 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 which can penetrate through the push rod (8), the push rod (8) is arranged in the through hole and can move freely, the rotary rod (6) is rotatably connected to the gun body (1), the rotary 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) is used for fixedly pressing the radioactive particle bin (10) on the gun body (1), the push rod (8) can move from the fixing pin (7) to the particle through hole A (2) when moving and extends out of the particle through hole A (2), the radioactive particle bin (10) passes through the radioactive particle bin (10) when extending out and pushes out particles in the bin, the radioactive particle bin (10) is provided with a particle through hole B (10-6) and a rotary magazine (10-7), the rotary magazine (10-7) is at least provided with a particle mounting hole (10-9) for mounting radioactive particles, the radioactive particle bin (10-9) can rotate only when the rotary rod (6) is required to rotate, and the rotary rod (6) can rotate only the rotary rod (10) to drive the radioactive particle bin (6) to rotate, only the push rod (8) is required to be moved, particles mounted in the particle mounting hole (10-9) on the rotary magazine (10-7) are pushed out of the rotary magazine (10-7) through the movement of the push rod (8), and the pushed particles are pushed out of 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).

When in actual use, the method comprises the following steps: particles to be implanted are mounted in particle mounting 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 key grooves (10-5) and keys, namely, the rotary magazine (10-7) is provided with an axle center hole (10-4), the axle center hole (10-4) is spliced on the rotary rod (6), the axle center hole (10-4) is provided with a key groove, protrusions which can be clamped in the key groove (10-5) are arranged on the rotary rod, and after splicing, the protrusions on the rotary rod (6) are clamped in the key grooves 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 through the rotation of the rotary rod (6), the purpose that different particle mounting holes (10-9) of the rotary magazine (10-7) are aligned with the particle through holes B (10-6) is achieved, namely, after particles in one particle mounting hole (10-9) are pushed out, the rotary magazine (10-7) is rotated, after the particles in the corresponding particle mounting hole (10-9) are pushed out, the rotary magazine is rotated again, and the like is adopted, so that the particles in different particle mounting holes (10-9) on the rotary magazine (10-7) are sequentially pushed out.

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

As an improvement, the section of the rotary rod (6) is in a regular polygon, and can be in a quadrilateral, a hexagon or an octagon.

The number of the cross-section sides 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 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 number of holes +1, the number of cross-sectional sides of the rotating rod (6) is also the number of holes +1.

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

As an improvement, a rotation mechanism (11) is provided, the rotation mechanism (11) comprising: ratchet (11-8), ratchet (11-1) and shell fragment (11-2), the one end of ratchet (11-1) is fixed on rifle body (1), shell fragment (11-2) is with the other end pressfitting of ratchet (11-1) on ratchet (11-8), ratchet (11-8) can form an integer with rotatory magazine (10-7), just ratchet (11-8) are through rotary rod (6) drive rotation, and rotary rod (6) rotate and drive ratchet (11-8) and rotate promptly, and ratchet (11-8) and rotatory magazine (10-7) are connected as an integer, and rotatory magazine (10-7) also can rotate thereupon. The number of the teeth of the ratchet wheel (11-8) is equal to the number +1 of the particle mounting holes (10-9), which is equivalent to that the through holes B (10-6) with 1 tooth are matched with the new mounting holes (10-9) on the upper part and the lower part of the rotary magazine (10-7) when the ratchet wheel (11-8) rotates, 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 in one direction, the rotary magazine (10-7) is prevented from rotating, and the risk of empty particle planting in operation is prevented.

The rotating mechanism (11) can be arranged on the gun body or 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, still set up fixing clip (5), fixing pin (7) set up on fixing clip (5), be connected through pivot (4) between fixing clip (5) and rifle body (1), when needing installation/change radioactive particle storehouse (10), press pivot (4) end, outwards push out fixing clip (5) together with fixing pin (7), make locking hole on fixing pin and the radioactive particle storehouse (10) break away from, fixing clip (5) can rotate through the pivot this moment for rifle body (1), after the rotation, fixing pin (7) skew, can cup joint radioactive particle storehouse (10) on rotary rod (6), cup joint the back, with fixing clip (5) back home position, press fixing clip (5) and make pivot (4) end spring out from the pivot groove, fixed pin (7) can continue to jack rotatory magazine (10-7) simultaneously.

The fixing pin (7) can move relative to the fixing card (5), and the movement of the fixing pin (7) on the fixing card (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 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, namely, the push rod (8) can move towards the gun body (1) and penetrate out of the gun body (1), namely, the push rod (8) penetrates through the particle through hole B (10-6) on the radioactive particle bin (10) and the rotating magazine (10-7), particles in the particle mounting hole (10-9) on the rotating magazine (10-7) are pushed out, and finally the particles are pushed out from the particle through hole A (2) on the gun body (1).

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

the second structure of the puncture needle connector (12) is as follows: comprises a threaded connection part which is used for being connected with a puncture needle connector (12), the far end is in a rod shape, the outer surface of the puncture needle connector 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.

The puncture needle connectors (3) are provided with through holes which can pass through particles and push rods (8).

The special puncture needle has the following structure: comprises a needle sleeve and a needle core which are sleeved outside the needle sleeve, wherein the 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 into the needle sleeve (13-1), the tubular needle sleeve connector (13-2) is provided with a notch (13-9) on the surface, at least two limiting clamping grooves (13-6) communicated with the notch (13-9) are arranged on the needle sleeve connector (13-2), a flip cover (13-4) is arranged on the needle core cap (13-3), the flip cover (13-4) is hinged on the needle core cap (13-3) and can rotate at a hinging point, a plug (9) is arranged on the flip cover (13-4), the needle core tube (13-7) is hollow, a channel which is connected with the needle core tube (13-7) in a hollow mode, the rotating clamp cover (13-4) can clamp the needle core tube (13-3) in a limiting way, the limiting clamping grooves (13-5) can be blocked on the needle core cap (13-3), and when the needle core cap (13-3) moves in the needle sleeve connector (13-2), the limiting clamping head (13-5) can switch positions 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).

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

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

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

When in actual use, the method comprises the following steps: the needle core is inserted into the needle sleeve, in an initial state, the limiting clamping head (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) can be exposed out of the needle sleeve (13-1) for puncture operation; when the needle core tube (13-7) is not required to puncture, the limiting clamp head (13-5) is moved out of the limiting clamping groove (13-6) by rotating the needle core cap (13-3), then the needle core cap (13-3) is moved to a proper position in a direction away from the needle sleeve (13-1), the limiting clamp head (13-5) is rotated into the limiting clamping groove (13-6) away from the needle sleeve (13-1) by rotating the needle core cap (13-3), and at the moment, the needle core tube (13-7) is retracted into the needle sleeve (13-1). By switching the two states, the puncture state and the tube placement state can be selected.

Because the needle core tube (13-7) is hollow and is provided with a communication channel with the needle core cap, related operations can be directly completed through the channel when special operations such as liquid medicine injection to a human body, biopsy sampling by puncture, particle implantation and the like are required to be performed in 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 fluid such as blood and the like from overflowing outwards through the channel, the plug (9) can be plugged at one end of the channel through rotating the cover plate (13-4) when special operation is not needed, so that the plugging of the needle core tube channel is realized.

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

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

The utility model also discloses a radioactive particle bin, which has the following specific structure: the rotary bullet box comprises a front cover (10-2), a rotary bullet box (10-7) and a rear cover (10-3), wherein the rotary bullet box (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 box (10-7), the front cover (10-2), the rotary bullet box (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 box (10-7) can synchronously rotate with the rotary rod (6), namely, a key groove (10-5) is formed in the rotary bullet box (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 formed in the front cover (10-2), a locking hole (10-8) is formed in the rear cover (10-3), the positioning hole (10-1) is formed in the outer surface of the front cover (10-2), and the locking hole (10-8) is formed in the outer surface of the rotary bullet box (10-3). The positioning hole (10-1) can be clamped on the positioning protrusion (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).

When in actual use, the method comprises the following steps: 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 as only the rotary magazine (10-7) is provided with a key slot, the bulge on the rotary rod (6) can only drive the rotary magazine (10-7) to rotate. The axle center hole (10-4) of the front cover (10-2) is slightly bigger in size, the bulge of the rotary rod (6) is not contacted with the front cover (10-2), or a key slot is also arranged on the axle center hole (10-4), and when the rotary rod (6) is sleeved, the rotary rod (6) is not provided with the bulge at the front cover (10-2) and can not drive the front cover to rotate.

As improvement, 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), and the ratchet wheel (11-8) can pass through an axle center hole (10-4) on the front cover (10-2) and is contacted with the ratchet wheel (11-1) on the gun body (1).

The ratchet wheel (11-8) is also provided with an axle center hole (10-4) which can pass through the rotating rod (6), and the axle center hole (10-4) on the ratchet wheel (11-8) is provided with a key slot (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 prolonged by arranging at least one group of extension covers (10-11), the extension covers (10-11) and the front cover (10-2) can be connected with the rear cover (10-3) through cover body connectors (10-10), the connection can be also performed through screw threads, 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 connection can also be performed through bayonet locks (10-12).

Drawings

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

FIG. 2 is a schematic diagram showing the front view of a particle gun according to embodiment 1 of the present utility model

Fig. 3 is a schematic view of the structure of the particle bin rotating mechanism of the particle gun according to embodiment 2 of the present utility model.

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

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

FIG. 6 is a schematic cross-sectional view of a particle gun according to example 3 of the present utility model.

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

Fig. 8 is a schematic perspective view of a particle gun according to example 4 of the present utility model.

Fig. 9 is a schematic cross-sectional structure of a particle gun according to example 4 of the present utility model.

Fig. 10 is a schematic perspective view of a particle gun according to embodiment 5 of the present utility model.

Fig. 11 is a schematic perspective view of a particle gun according to example 5 of the present utility model.

FIG. 12 is a schematic cross-sectional view of a particle gun according to example 5 of the present utility model.

Fig. 13 is a schematic perspective view of a particle gun according to example 6 of the present utility model.

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

FIG. 15 is a schematic cross-sectional view of a particle gun according to example 6 of the present utility model.

Fig. 16 is a schematic perspective view of a particle bin according to embodiment 7 of the utility model.

Fig. 17 is a schematic view showing the front view of the particle bin according to embodiment 7 of the utility model.

FIG. 18 is a schematic cross-sectional view I of a particle bin according to example 7 of the utility model.

FIG. 19 is a schematic drawing II of the cross-sectional structure of the particle bin of example 7 of the utility model.

Fig. 20 is a schematic perspective view of a particle bin according to embodiment 8 of the utility model.

Fig. 21 is a schematic view showing the front view of the particle bin according to embodiment 8 of the utility model.

FIG. 22 is a schematic cross-sectional view of a particle bin according to embodiment 8 of the utility model.

Fig. 23 is a schematic perspective view of a particle bin according to embodiment 9 of the utility model.

Fig. 24 is a schematic view showing the front view of the particle bin according to embodiment 9 of the utility model.

Fig. 25 is a schematic perspective view of a particle bin according to embodiment 10 of the utility model.

Fig. 26 is a schematic diagram showing a front view of a particle bin according to embodiment 10 of the utility model.

FIG. 27 is a schematic cross-sectional view of the particle bin of example 10 of the utility model.

Fig. 28 is a schematic perspective view of a rotary bin according to embodiment 10 of the utility model.

Fig. 29 is a schematic front view of the rotary housing according to embodiment 10 of the present utility model.

Fig. 30 is a schematic cross-sectional view of a rotary housing according to embodiment 10 of the present utility model.

FIG. 31 is a schematic perspective view of a puncture needle for use with the particle gun of embodiment 4 of the present utility model

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

FIG. 33 is a schematic perspective view of a lancet core of the particle gun according to embodiment 4 of the present utility model

The figure shows: 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 an axle center hole, 10-5 is a key slot, 10-6 is a particle through hole B,10-7 is a rotary magazine, 10-8 is a locking hole, 10-9 is a particle mounting hole, 10-10 is a cover body connecting piece, 10-11 is an extension cover, 10-12 is a bayonet lock,

11 is a rotating mechanism, 11-1 is a ratchet, 11-2 is a spring, 11-3 is a positioning hole, 11-5 is a key slot, 11-7 is a ratchet fixing shaft, 11-8 ratchet,

reference numeral 12 denotes a puncture needle connector,

13 is a puncture needle set, 13-1 is a needle sleeve, 13-2 is a needle sleeve connector, 13-3 is a needle core cap, 13-4 is a flip cover, 13-5 is a limit clamping head, 13-6 is a limit clamping groove, 13-7 is a needle core tube, 13-8 is a flip cover fixing shaft, 13-9 notch, 14 is a positioning bulge, 15 is a sliding groove, 16 is a screwing mechanism, and 17 is a finger sleeve.

Detailed Description

The foregoing is further elaborated by the following examples, it being evident that the examples described are only some, but not all, of the examples of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-2, the embodiment 1 of the utility model discloses a radioactive particle implantation gun, which comprises a gun body 1, wherein a particle through hole A2, a fixing pin 7, a rotating rod 6 and a push rod 8 are arranged on the gun body 1, 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 arranged on one side of the gun body, a through hole capable of penetrating the push rod 8 is arranged on the fixing pin 7, the push rod 8 is arranged in the through hole and can freely move, 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 positioned between the fixing pin 7 and the gun body 1 after the sleeving, the fixing pin 7 is used for fixedly pressing the radioactive particle bin 10 on the gun body 1, the fixing position of the radioactive particle bin 10 is a bin area, the push rod 8 can move from the fixing pin 7 to the particle through hole A2 direction and extends out of the particle through hole A2, a through hole B10-6 and a rotating bin 10-6 are arranged on the radioactive particle bin 10, at least one of the rotating rod 10-10 is rotatably arranged on the rotating rod 10-10, and the rotating bin 10-10 is rotatably arranged on the rotating bin 10-10, namely, and the rotating bin 10-10 is rotatably arranged on the rotating bin 10-10; when the particles are to be implanted, only the push rod 8 is required to be moved, the particles mounted in the particle mounting holes 10-9 on the rotary magazine 10-7 are pushed out from the rotary magazine 10-7 by moving the push rod 8, and the pushed-out particles are pushed out from the particle through holes A2 on the gun body 1.

When in actual use, the method comprises the following steps: particles to be implanted are mounted in a particle mounting hole 10-9 of a rotary bullet bin 10-7, then the radioactive particle bin 10 is sleeved on a rotary rod 6, synchronous rotation is achieved between the rotary bullet bin 10-7 and the rotary rod 6 through a key slot 10-5 and a key, namely, the rotary bullet bin 10-7 is provided with an axle center hole 10-4, the axle center hole 10-4 is spliced on the rotary rod 6, the axle center hole 10-4 is provided with a key slot, the rotary rod is provided with a protrusion which can be clamped in the key slot 10-5, and after splicing, the protrusion on the rotary rod 6 is clamped in the key slot of the rotary bullet bin 10-7 to drive the rotary bullet bin 10-7 to rotate.

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

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 holes B10-6, namely, after particles in one particle mounting hole 10-9 are pushed out, the rotary magazine 10-7 is rotated, after the particles in the corresponding particle mounting hole 10-9 are pushed out, the rotary magazine rotates again, and the like is repeated, so that the particles in different particle mounting holes 10-9 on the rotary magazine 10-7 are sequentially pushed out.

The particle mounting holes 10-9 arranged on the rotary magazine 10-7 are uniformly distributed according to the quantity of the hole number +1, for example, seven particle mounting holes 10-9 are arranged on the rotary magazine 10-7 and are uniformly distributed according to 8 quantities, wherein the missing particle is an initial position, when particles are implanted, the push rod 8 at the initial position cannot penetrate through the radioactive particle magazine 10, particles can be pushed out from the adjacent particle mounting holes 10-9 only after rotating, and after all particles are pushed out, the particles cannot be pushed out when rotating to the initial position, at the moment, medical staff can be reminded that the particles in the rotary magazine 10-7 are all used, the movement distance of the particle push rod 8 cannot be pushed out is different, and whether the particles can be pushed out is judged according to different pushing depths.

As a modification, the cross section of the rotary rod 6 is regular polygon, which may be quadrilateral, hexagonal or octagonal.

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

When the particle mounting holes 10-9 are arranged in the number of holes +1, the number of sides of the cross section of the rotating lever 6 is also the number of holes +1.

Example 2: referring to fig. 3, a schematic structural diagram of embodiment 2 of the present utility model is shown, and compared with embodiment 1, the difference of this embodiment is that: there is also provided a rotation mechanism 11, the rotation mechanism 11 comprising: the ratchet 11-8, ratchet 11-1 and shell fragment 11-2, the one end of ratchet 11-1 is fixed on the rifle body, shell fragment 11-2 presss from both sides the other end of ratchet 11-1 on ratchet 11-8, ratchet 11-8 can form an entirety with rotatory magazine 10-7, and ratchet 11-8 passes through rotary rod 6 drive rotation, and the rotation of rotary rod 6 drives ratchet 11-8 rotation promptly, and ratchet 11-8 and rotatory magazine 10-7 connect into an entirety, and rotatory magazine 10-7 also can rotate, and the teeth of a cogwheel number of ratchet 11-8 equals particle mounting hole 10-9 quantity +1, is equivalent to ratchet 11-8 every 1 tooth through-hole B10-6 promptly with rotatory magazine 10-7 last new mounting hole 10-9 involutes, and ratchet 11-8, ratchet 11-1 and shell fragment 11-2 constitute stop rotation in a direction simultaneously, prevent that the empty risk of planting the particle from appearing in the operation.

Example 3: referring to fig. 4 to 6, which are schematic structural views of embodiment 3 of the present utility model, the difference between this embodiment and embodiment 1 is that: the particle through hole A2 department is equipped with connector 3, and the connector 3 sets up on 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 epaxial through-hole of connector.

As an improvement, the connector 3 is a threaded connector, and the connector can be connected with different puncture needle connectors 12 in a threaded manner, and the puncture needle connectors 12 have the following structure: the puncture needle comprises a threaded connection part which is used for being connected to a connector 3, a nipple is arranged at the far end of the puncture needle and can be clamped on the needle head of the puncture needle, and when in actual use, the clamping joint of the puncture needle is clamped on the nipple to realize connection;

example 4: referring to fig. 7 to 9, a schematic structural diagram of embodiment 4 of the present utility model is different from embodiment 1 in that: the particle through hole A2 is provided with a connector 3, the connector can be connected with a puncture needle connector 12 in a threaded manner, and the puncture needle connector has the following structure: comprises a threaded connection part which is used for being connected to the puncture needle connector 12, the far end is in a rod shape, the outer surface of the puncture needle connector 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.

The puncture needle connectors 3 are provided with through holes which can pass through particles and the push rod 8.

Example 5: referring to fig. 10 to 12 and fig. 31 to 33, which are schematic structural views of embodiment 5 of the present utility model, the difference between this embodiment and embodiment 1 is that: the structure of the special puncture needle used in this embodiment is as follows: the needle sleeve comprises a needle sleeve and a needle core, wherein the needle sleeve is sleeved inside and outside the needle sleeve, the 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 into the needle sleeve 13-1, the needle sleeve connector 13-2 is tubular, a notch 13-9 is arranged on the surface of the needle sleeve connector 13-2, at least two limiting clamping grooves 13-6 communicated with the notch 13-9 are arranged on the needle sleeve connector 13-2, a flip cover 13-4 is arranged on the needle core cap 13-3, the flip cover 13-4 is hinged on the needle core cap 13-3 and can rotate at a hinging point, a plug 9 is arranged on the flip cover 13-4, the needle core tube 13-7 is hollow, a channel connected with the needle core tube 13-7, a limiting clamping head 13-5 is arranged on the needle core cap 13-3, the limiting clamping head 13-5 can be switched between the limiting clamping grooves 13-6 and the limiting clamping heads 13-3, and the limiting head 13-5 can be switched between the limiting grooves 13-6 and the limiting positions of the needle sleeve and the needle sleeve 13-3.

The needle sheath connector 13-2 and the needle sheath 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.

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

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

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

When in actual use, the method comprises the following steps: the needle core is inserted into the needle sleeve, and in an initial state, the limiting clamping head 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 can be exposed out of the needle sleeve 13-1 for puncture operation; when the needle core tube 13-7 is not required to puncture, the limiting clamp head 13-5 is moved out of the limiting clamping groove 13-6 by rotating the needle core cap 13-3, then the needle core cap 13-3 is moved to a proper position in a direction away from the needle sleeve 13-1, the limiting clamp head 13-5 is rotated into the limiting clamping groove 13-6 away from the needle sleeve 13-1 by rotating the needle core cap 13-3, and at the moment, the needle core tube 13-7 is retracted into the needle sleeve 13-1. By switching the two states, the puncture state and the tube placement state can be selected.

Because the needle core tube 13-7 is hollow and is provided with a communication channel with the needle core cap, related operations can be directly completed through the channel when special operations such as injection of liquid medicine into a human body, biopsy taking by puncture, particle implantation and the like are required in 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 fluid 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 when special operation is not needed, so that the plugging of the needle core tube channel is realized.

The rotating flip cover 13-4 and the limiting clamp 13-5 are overlapped and can be clamped into the limiting clamping groove 13-6, namely, the flip cover and the limiting clamp 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 a scale mark, and the puncture depth of the puncture needle can be known through the scale.

Example 6: referring to fig. 13 to 15, a schematic structural diagram of embodiment 6 of the present utility model is different from embodiment 1 in that: still set up fixing clip 5, fixing pin 7 sets up on fixing clip 5, connect through pivot 4 between fixing clip 5 and the rifle body 1, when needing to install/change radioactive particle storehouse 10, press the pivot 4 end, outwards push out fixing clip 5 with fixing pin 7, make the locking hole on fixing pin and the radioactive particle storehouse 10 break away from, at this moment fixing clip 5 can rotate for rifle body 1 through the pivot, after the rotation, fixing pin 7 skew, can cup joint radioactive particle storehouse 10 on rotary rod 6, cup joint the back, turn back the fixing clip 5 into the home position, press fixing clip 5 and make pivot 4 end follow pivot groove bullet out, fixing pin 7 can continue to jack rotatory magazine 10-7 simultaneously.

The fixing pin 7 can move relative to the fixing clip 5, and the movement of the fixing pin 7 on the fixing clip 5 is restricted by the 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 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 freely move and move towards the gun body 1 and penetrate out of the gun body 1, namely, a particle through hole A2 is formed in the gun body 1, and the push rod 8 penetrates out of the particle through hole A2.

The gun body 1 is provided with a holding finger sleeve 17, a puncture needle particle needle can be clamped by a little finger and a ring finger of one hand when a puncture person operates, a middle finger and a thumb penetrate through the holding finger sleeve 14 to hold the puncture gun with 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, in order to schematically illustrate the structure of embodiment 7 of the present utility model, this embodiment discloses a radioactive particle bin, which has the following specific structure: 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 arranged on the rotary magazine 10-7, axle center holes 10-4 capable of penetrating through the rotary rod 6 are arranged on the front cover 10-2, the rotary magazine 10-7 and the rear cover 10-3, key grooves 10-5 are arranged on the rotary magazine 10-7 only,

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 protrusion 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 connector 10-10.

When in actual use, the method comprises the following steps: 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 as only the rotary magazine 10-7 is provided with a key slot, the bulge on the rotary rod 6 can only drive the rotary magazine 10-7 to rotate. The axle center hole 10-4 of the front cover 10-2 is slightly bigger in size, the bulge of the rotary rod 6 is not contacted with the front cover 10-2, or a key slot is also arranged on the axle center hole 10-4, and when the rotary rod 6 is sleeved, the rotary rod 6 is not provided with the bulge 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 utility model, this embodiment differs from embodiment 7 in that,

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, and the ratchet wheel 11-8 can pass through an axle center hole 10-4 on the front cover 10-2 and is contacted with the ratchet 11-1 on the gun body 1.

Example 9: referring to fig. 23 to 24, in comparison with embodiment 7, the front cover 10-2 of this embodiment is cup-shaped, the volume of the rotary magazine 10-7 inside the front cover is increased along with the same proportion of the front cover, and the length of the particle mounting hole 10-9 on the rotary magazine 10-7 is increased, so as to accommodate a plurality of particles, and the utility model is characterized in that the particle chains can be combined according to a set treatment plan and placed in the particle mounting hole 10-9, the radioactive particle bin 10 can play a role of protecting the particle chains, preventing damage caused by damage such as bending, deformation and the like during storage, transfer and disinfection, and the radioactive particle bin 10 can also form a radiation protection layer, prevent particles in the particle mounting hole 10-9 or gamma rays released by the particle chains from overflowing, and reduce radiation exposure caused by operators and people in the surrounding environment.

When the particle implantation treatment device is specifically used, 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 sterilized 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, a push rod 8 is used for pushing the particle chains into the needle sleeve 13-1, the push rod 8 is used for lightly supporting the particle chains and simultaneously pulling out the needle sleeve 13-1, the particle chains are retained in the focus, then a rotary rod 6 is rotated after the particle chains are sequentially connected with a next puncture needle, and the operation is completed by repeating the implantation action of the push rod 8 through the particle through holes B10-6 and the next particle mounting holes 10-9 on a rotary magazine 10-7.

Example 10: referring to fig. 25 to 30, in order to schematically illustrate the structure of the embodiment 10 of the present utility model, compared with the embodiment 7, the 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 group of extension covers 10-11, the extension covers 10-11 and the front cover 10-2 and the rear cover 10-3 can be connected by a cover body connector 10-10, can also be connected by a screw thread manner, the number of the rotary magazine 10-7 is correspondingly increased, and the rotary magazine 10-7 can be mutually attached and movably connected, and can also be connected by a bayonet 10-12.

The embodiment can combine particle chains with any length according to the formulated treatment plan, and combine the radioactive particle bin 10 which is suitable for the particle chains according to the particle chain length, thereby being convenient for doctors to operate during operation.

Claims (6)

1. A radioactive particle implantation 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 which can pass through the push rod (8), the push rod (8) is arranged in the through hole and can move freely,

the rotary rod (6) is rotatably connected to the gun body (1), the rotary rod (6) can be sleeved with the radioactive particle bin (10), the radioactive particle bin (10) is positioned between the fixing pin (7) and the gun body (1) after the sleeve is sleeved, the fixing pin (7) presses and fixes the radioactive particle bin (10) on the gun body (1),

the push rod (8) can move from the fixing pin (7) to the particle through hole A (2) and extend out of the particle through hole A (2), and the particles in the bin are pushed out through the radioactive particle bin (10) when extending out.

2. The radioactive particle implantation gun of claim 1, wherein: the section of the rotary rod (6) is in a regular polygon shape.

3. The radioactive particle implantation gun of claim 1, wherein: is provided with a rotation mechanism (11), the rotation mechanism (11) comprises: ratchet (11-8), ratchet (11-1) and shell fragment (11-2), the one end of ratchet (11-1) is fixed on rifle body (1), shell fragment (11-2) is with the other end pressfitting of ratchet (11-1) on ratchet (11-8), ratchet (11-8) can form an integer with rotatory magazine (10-7), just ratchet (11-8) are through rotary rod (6) drive rotation, and rotary rod (6) rotate and drive ratchet (11-8) and rotate promptly, and ratchet (11-8) and rotatory magazine (10-7) are connected as an integer, and rotatory magazine (10-7) also can rotate thereupon.

4. The radioactive particle implantation gun of claim 3, wherein: the number of the teeth of the ratchet wheel (11-8) is equal to the number +1 of the particle mounting holes (10-9), which is equivalent to that the particle through hole B (10-6) of each tooth of the ratchet wheel (11-8) rotates to be matched with the new mounting hole (10-9) on the upper part and the lower part of the rotary magazine (10-7), 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 in one direction to prevent the rotary magazine (10-7) from rotating.

5. The radioactive particle implantation gun of claim 1, 2, 3 or 4, wherein: the fixing device is characterized by further comprising a fixing clamp (5), wherein the 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 bin (10) needs to be installed or replaced, the tail end of the rotating shaft (4) is pressed, the fixing clamp (5) and the fixing pin (7) are outwards ejected, so that the fixing pin is separated from a locking hole on 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) is deviated, the radioactive particle bin (10) is 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 a rotating shaft groove, and meanwhile, the fixing pin (7) can continuously prop against the rotating magazine (10-7); the fixing pin (7) can move relative to the fixing card (5), and the movement of the fixing pin (7) on the fixing card (5) is limited by a screwing mechanism (16).

6. The radioactive particle implantation gun of claim 1, 2, 3 or 4, wherein: still be equipped with connector (3), connector (3) are established in particle through-hole A (2) department, and the connector is screwed joint, can screwed connection different pjncture needle connect (12) on the connector, the first structure of pjncture needle connect (12) is as follows: the puncture needle comprises a threaded connection part which is used for being connected to a puncture needle connector (12), a nipple is arranged at the far end and can be clamped on the needle head of the puncture needle, and when in actual use, the clamping connector of the puncture needle is clamped on the nipple to realize connection;

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

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