In-vivo indwelling tube and in-vivo indwelling device for accommodating radioactive particles

Abstract

The utility model discloses an in-vivo indwelling tube for containing radioactive particles and in-vivo indwelling equipment, and relates to the technical field of medical instruments. According to the in-vivo indwelling tube used for containing the radioactive particles, the in-vivo indwelling tube can contain the radioactive particles through the inner cavity, and at least one end of the in-vivo indwelling tube can be closed. The radioactive particles contained in the in-vivo indwelling tube cannot move to the outer side of the in-vivo indwelling tube through at least one end in the closed state. Therefore, the in-vivo indwelling tube can accommodate the radioactive particles, and the radioactive particles can be fixed in the inner cavity of the in-vivo indwelling tube.

Description

Technical Field

[0001] The present specification relates to the technical field of medical devices, and in particular to an indwelling tube and an indwelling device for containing radioactive particles. Background Art

[0002] Radiation therapy, or radiotherapy, is one of the most widely used cancer treatments. During the treatment, ionizing radiation (such as X-rays, gamma rays, high-energy electrons or heavy particles) is irradiated to the cancer cells in the patient's body to kill them.

[0003] In the prior art, when performing radiotherapy, it is usually necessary to place radioactive particles into a specific position in the patient's body so that the radioactive particles can emit therapeutic rays in the patient's body. However, there is a lack of a device for containing radioactive particles. Summary of the invention

[0004] The present specification provides an in-vivo indwelling tube and an in-vivo indwelling device for containing radioactive particles, so as to partially solve the above-mentioned problems existing in the prior art.

[0005] This manual adopts the following technical solutions:

[0006] This specification provides an in-vivo indwelling tube for containing radioactive particles, wherein the in-vivo indwelling tube is a hollow tubular object, and the inner cavity is used to place the radioactive particles;

[0007] At least one end of the indwelling tube can be opened or closed. When the at least one end is in a closed state, the radioactive particles contained in the indwelling tube cannot move to the outside of the indwelling tube through the at least one end in a closed state.

[0008] Preferably, the inner diameter of the lumen of the indwelling catheter is between 0.889 mm and 0.9652 mm.

[0009] Preferably, the indwelling tube comprises a movable plug, which is adapted to at least one end of the indwelling tube, can be fixedly connected to the at least one end, and closes the at least one end of the indwelling tube connected thereto.

[0010] Preferably, at least one end of the indwelling tube can generate permanent deformation and close in response to a squeezing operation by a user.

[0011] Preferably, a plurality of radiation holes are formed on the surface of the indwelling tube, and the radiation holes can accommodate the radiation emitted by the radioactive particles to penetrate through.

[0012] Preferably, the indwelling tube is a hollow grid structure;

[0013] The gaps between the grids do not block the radiation emitted from the emitting particles.

[0014] Preferably, at least one end of the indwelling tube can be opened;

[0015] When at least one end of the indwelling tube is opened, the radioactive particles can move from the inner cavity of the indwelling tube to the outside of the indwelling tube, and the radioactive particles can also move from the outside of the indwelling tube to the inner cavity of the indwelling tube.

[0016] Preferably, the inner diameter of the indwelling tube is larger than the diameter of the radioactive particles, and can accommodate the radioactive particles coiled into a spring shape;

[0017] When the indwelling tube accommodates the radioactive particles coiled in a spring shape, the inner wall is in close contact with the radioactive particles.

[0018] Preferably, at least one end of the indwelling tube is provided with a colloid / adhesive;

[0019] The indwelling tube is provided with at least one end of a jelly / adhesive, and is used for closing and being fixed by the jelly / adhesive in response to a squeezing operation by a user.

[0020] On the other hand, the present specification provides an indwelling device, comprising an indwelling tube for containing radioactive particles provided in any of the above embodiments, and radioactive particles.

[0021] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0022] In the indwelling tube for containing radioactive particles provided in the present specification, the indwelling tube can contain radioactive particles through an inner cavity, and at least one end of the indwelling tube can be closed, and the radioactive particles contained in the indwelling tube cannot move to the outside of the indwelling tube through at least one end in a closed state.

[0023] It can be seen that the indwelling tube can accommodate the radioactive particles and fix the radioactive particles in the inner cavity of the indwelling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The illustrative embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification;

[0026] Figure 2A schematic diagram of the state change of an indwelling catheter provided in an embodiment of the present specification;

[0027] Figure 3 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification;

[0028] Figure 4 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification;

[0029] Figure 5 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification;

[0030] Figure 6 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification;

[0031] Figure 7 A schematic diagram of the structure of an indwelling device provided in an embodiment of the present specification. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this specification more clear, the technical solutions of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0034] Figure 1 A schematic diagram of the structure of an indwelling catheter provided in an embodiment of the present specification is shown in FIG. Figure 1 As shown, the indwelling catheter 1 is a hollow tubular object, and the inner cavity 11 can be used to place radioactive particles.

[0035] Preferably, at least one end of the indwelling tube 1 can be closed, and when at least one end of the indwelling tube 1 is in a closed state, the radioactive particles contained in the indwelling tube 1 cannot move through the closed end to the outside of the indwelling tube 1. It should be noted that the fact that one end of the indwelling tube 1 is in a closed state does not mean that one end of the indwelling tube 1 is completely closed, but that the opening sizes of both ends of the indwelling tube 1 are smaller than the size of the radioactive particles, making it difficult for the radioactive particles to move from the closed end of the indwelling tube 1 to the outside of the indwelling tube 1.

[0036] Preferably, both ends of the indwelling tube 1 can be closed.

[0037] Preferably, one end of the indwelling tube 1 can be opened or closed, and the other end is in a closed state and cannot be opened.

[0038] It will be understood by those skilled in the art that at least one end of the indwelling tube 1 can be closed in a variety of ways, such as by configuring a movable plug at at least one end of the indwelling tube 1, or by compressing at least one end of the indwelling tube 1 so that at least one end of the indwelling tube 1 is permanently deformed.

[0039] Preferably, at least one end of the indwelling tube 1 can be permanently deformed and closed in response to the squeezing operation of the user. It should be noted that the closure only means that the opening size of at least one end of the indwelling tube 1 is smaller than the size of the radioactive particles.

[0040] Figure 2 This is a schematic diagram of the state change of the indwelling catheter 1 provided in one embodiment of the present specification. Figure 2 As shown, the first end 12 of the indwelling tube 1 is circular 121 before being squeezed by the user, and can accommodate the passage of the radioactive particles. After being squeezed by the user, the first end 12 of the indwelling tube 1 is elliptical 122 and is in a closed state, and cannot accommodate the passage of the radioactive particles. It can ensure that the radioactive particles contained in the indwelling tube 1 cannot move to the outside of the indwelling tube 1.

[0041] Preferably, at least one end of the indwelling tube 1 is provided with a gel / adhesive.

[0042] Preferably, the indwelling tube 1 is provided with at least one end of a jelly / adhesive, which can respond to the squeezing operation of the user, close and be bonded and fixed by the jelly / adhesive to complete the sealing, thereby ensuring that the radioactive particles contained in the indwelling tube 1 cannot move to the outside of the indwelling tube 1.

[0043] Preferably, the indwelling tube 1 has thermoplasticity, and at least one end of the indwelling tube can melt after being heated to a preset temperature, and can resolidify after being cooled.

[0044] Preferably, at least one end of the indwelling tube 1 can melt, bond, and re-solidify and seal in response to the user's heating / cooling operation, thereby ensuring that the radioactive particles contained in the indwelling tube 1 cannot move to the outside of the indwelling tube 1 .

[0045] Preferably, the inner diameter of the inner cavity 11 of the indwelling catheter 1 is 0.889 mm (0.035 inches).

[0046] Preferably, the inner diameter of the inner cavity 11 of the indwelling tube 1 is 0.9652 mm (0.038 inches).

[0047] Preferably, the inner diameter of the inner cavity 11 of the indwelling catheter 1 is between 0.889 mm (0.035 inches) and 0.9652 mm (0.038 inches).

[0048] Those skilled in the art can understand that the length of commonly used radiation particles is 8 mm and the diameter is 0.35 mm. Therefore, in a preferred embodiment, the size of the indwelling tube 1 can be adapted to the size of commonly used radiation particles. Of course, the size of the indwelling tube 1 can also be other sizes, such as a length of 10 mm and an inner diameter of 0.5 mm. This specification does not limit the specific values ​​of the length, inner diameter, etc. of the indwelling tube 1.

[0049] Preferably, the length of the indwelling tube 1 is 20 cm.

[0050] Preferably, the length of the indwelling tube 1 is 30 cm.

[0051] Preferably, the length of the indwelling tube 1 is between 20 cm and 30 cm.

[0052] Preferably, the indwelling tube 1 is made of a non-developable material.

[0053] Preferably, when the indwelling tube 1 is irradiated by the radiation emitted by the developing device, it will not be highlighted in the developing device and will not block the radiation penetration. It can be understood by those skilled in the art that the radiation particles can emit radiation, so the indwelling tube will not block the radiation penetration, so that the radiation emitted by the radiation particles can fully act on human tissue.

[0054] Preferably, the indwelling tube 1 is made of plastic.

[0055] Preferably, the indwelling tube 1 is made of biodegradable material.

[0056] Preferably, a plurality of radiation holes are provided on the surface of the indwelling tube 1, and the radiation holes can accommodate the radiation emitted by the radiation particles to penetrate.

[0057] Figure 3 This is a schematic diagram of the structure of an indwelling catheter 1 provided in one embodiment of the present specification. Figure 3 As shown, a plurality of radiation holes 13 are provided on the surface of the indwelling tube 1 .

[0058] Preferably, the ray hole 13 is circular, square or diamond-shaped. Of course, this specification does not limit the specific shape of the ray hole 13.

[0059] Preferably, the indwelling tube 1 is a hollow grid structure, and the gaps between the grids will not block the rays emitted from the radioactive particles.

[0060] Figure 4 This is a schematic diagram of the structure of an indwelling catheter 1 provided in one embodiment of the present specification. Figure 4 As shown, the indwelling tube 1 is a hollow grid structure, and the indwelling tube 1 is composed of a plurality of grid lines 14 woven together, and the gaps 15 between the plurality of grid lines 14 can accommodate the penetration of the radiation emitted by the radioactive particles.

[0061] Preferably, at least one end of the indwelling tube 1 can be opened or closed.

[0062] Preferably, when at least one end of the indwelling tube 1 is opened, the radioactive particles can move from the inner cavity 11 of the indwelling tube 1 to the outside of the indwelling tube 1, and the radioactive particles can also move from the outside of the indwelling tube 1 to the inner cavity 11 of the indwelling tube 1.

[0063] Preferably, the indwelling tube 1 is a straight tube without any bends.

[0064] It is understood by those skilled in the art that, under normal circumstances, the radiation radius of the radiation particles is 0.8 cm, that is, the radiation emitted by the radiation particles is only effective for human tissue within 0.8 cm from the outer surface of the radiation particles. However, some blood vessels in the human body are relatively wide, so when the indwelling catheter 1 is placed in these blood vessels, the radiation emitted by the radiation particles is difficult to work. Therefore, in a preferred embodiment of the present specification, the inner diameter of the indwelling catheter 1 is greater than the diameter of the radiation particles.

[0065] Preferably, the inner diameter of the indwelling tube 1 is larger than the inner diameter of the radioactive particles, and can accommodate the radioactive particles that are coiled into a spring shape.

[0066] Preferably, when the indwelling tube 1 contains the radioactive particles coiled into a spring shape, the inner wall of the indwelling tube 1 is in close contact with the radioactive particles.

[0067] Preferably, the inner diameter of the indwelling tube 1 is larger than the inner diameter of the radioactive particles, and can accommodate multiple radioactive particles. The multiple radioactive particles are all in close contact with the inner surface of the indwelling tube 1, so that the rays emitted by the radioactive particles can directly act on the human tissue outside the indwelling tube 1.

[0068] Preferably, the inner diameter of the indwelling tube 1 is larger than the inner diameter of the radioactive particles, and can accommodate multiple radioactive particles, and the multiple radioactive particles are closely attached to the inner surface of the indwelling tube 1. The inner cavity 11 of the indwelling tube 1 is also configured with a filler, and the filler can resist the multiple radioactive particles, so that the multiple radioactive particles remain stable inside the indwelling tube 1.

[0069] Figure 5 This is a schematic diagram of the structure of an indwelling catheter 1 provided in one embodiment of the present specification. Figure 5 As shown, a plurality of radioactive particles 16 are disposed in the inner cavity 11 of the indwelling catheter 1 and are supported by the filler 17 so as not to move in the indwelling catheter 1 .

[0070] Preferably, the indwelling tube 1 can be curled into a coil shape so that when the indwelling tube 1 is in a wider blood vessel, the radiation emitted by the radioactive particles 16 disposed in the indwelling tube 1 can also act on human tissues without being difficult to act due to a small radiation radius.

[0071] Figure 6 This is a schematic diagram of the structure of an indwelling catheter 1 provided in one embodiment of the present specification. Figure 6 As shown, the indwelling tube 1 is curled into a spring coil shape.

[0072] In the indwelling tube 1 for accommodating radioactive particles provided in the present specification, the indwelling tube 1 can accommodate radioactive particles through the inner cavity 11, and at least one end of the indwelling tube 1 can be closed, and the radioactive particles accommodated in the indwelling tube 1 cannot move to the outside of the indwelling tube 1 through at least one end in a closed state.

[0073] It can be seen that the indwelling tube 1 is capable of accommodating the radioactive particles and fixing the radioactive particles in the inner cavity 11 of the indwelling tube 1 .

[0074] The above is an indwelling tube 1 for containing radioactive particles provided in one or more embodiments of this specification. Based on the same idea, this specification also provides a corresponding indwelling device.

[0075] The indwelling device comprises the indwelling tube 1 provided in any one of the above embodiments, and radioactive particles.

[0076] Figure 7 This is a schematic diagram of the structure of an indwelling device provided in an embodiment of this specification. Figure 7 As shown, the indwelling device 2 includes an indwelling tube 1 and radioactive particles 16 accommodated in the indwelling tube 1 .

[0077] Preferably, the length of the radiated particles is 8 mm and the diameter is 0.35 mm.

[0078] Preferably, the indwelling device can be placed in the patient's body through a 6F guide catheter to achieve radiotherapy.

[0079] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0080] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0081] The above description is only an embodiment of this specification and is not intended to limit this specification. For those skilled in the art, this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification should be included in the scope of the claims of this application.

Claims

1. An indwelling catheter for containing radioactive particles, characterized in that: The indwelling tube is a hollow tube, and the inner cavity is used to place radioactive particles; At least one end of the indwelling tube can be opened or closed. When the at least one end is in a closed state, the radioactive particles contained in the indwelling tube cannot move to the outside of the indwelling tube through the at least one end in a closed state.

2. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: At least one end of the indwelling tube is provided with a jelly / adhesive; The indwelling tube is provided with at least one end of a jelly / adhesive, and is used for closing and being fixed by the jelly / adhesive in response to a squeezing operation by a user.

3. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: The inner diameter of the lumen of the indwelling tube is between 0.889 mm and 0.9652 mm.

4. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: The indwelling tube in vivo comprises a movable plug, which is adapted to at least one end of the indwelling tube in vivo, can be fixedly connected to the at least one end, and closes the at least one end of the indwelling tube in vivo connected thereto.

5. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: At least one end of the indwelling tube can generate permanent deformation and close in response to a squeezing operation by a user.

6. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: A plurality of ray holes are formed on the surface of the indwelling tube, and the ray holes can accommodate the penetration of the rays emitted by the radioactive particles.

7. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: The indwelling tube in the body is a hollow grid structure; The gaps between the grids do not block the radiation emitted from the emitting particles.

8. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: At least one end of the indwelling tube can be opened; When at least one end of the indwelling tube is opened, the radioactive particles can move from the inner cavity of the indwelling tube to the outside of the indwelling tube, and the radioactive particles can also move from the outside of the indwelling tube to the inner cavity of the indwelling tube.

9. The indwelling catheter for accommodating radioactive particles according to claim 1, characterized in that: The inner diameter of the indwelling tube is larger than the diameter of the radioactive particles, and can accommodate the radioactive particles coiled into a spring shape; When the indwelling tube accommodates the radioactive particles coiled in a spring shape, the inner wall is in close contact with the radioactive particles.

10. An indwelling device, characterized in that: The invention comprises the indwelling tube for containing radioactive particles as claimed in any one of claims 1 to 8, and radioactive particles.

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