Radioactive particle implantation needle assembly for implanting radioactive source into brain

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a radioactive particle implantation needle assembly for implanting a radioactive source into a brain, which comprises an implantation needle sheath and a radioactive particle implantation needle, the first end of the implantation needle sheath and the first end of the radioactive particle implantation needle are respectively inclined to form tips, and the second end of the implantation needle sheath and the first end of the radioactive particle implantation needle are respectively inclined to form a tip. A first mounting seat is arranged at the second end of the implantation needle sheath, a groove is formed in the center of the first mounting seat, and a first clamping block is fixedly arranged on the outer wall of the first mounting seat; a second mounting seat matched with the groove is arranged at the second end of the radioactive particle implantation needle; the radioactive particle implantation needle assembly can be matched with an execution tail end of a surgical robot or a manual operation handle through the first clamping block. According to the scheme, the man-machine dual-purpose radioactive particle implantation needle assembly which is simple in structure and can be matched with an osteoclast outer sheath is comprehensively provided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a radioactive particle implantation needle assembly used for implanting a radioactive source into the brain. Background Art

[0002] With the development of medicine, most intracranial tumors can be treated scientifically. However, some intracranial tumors are deep in the body and are already very large when discovered, so surgery cannot completely remove them. For tumors in key parts of the human body, such as the brain stem, traditional craniotomy is extremely risky because a single touch can affect the entire body. This has also led to many hospitals being helpless when faced with complex intracranial tumors.

[0003] Radioactive particles are a type of radiotherapy. After the puncture needle punctures the tumor, a micro-radioactive source is implanted into the tumor through the needle tract. The particles continuously release gamma rays inside the tumor, thereby killing the tumor. It is mainly used for prostate cancer abroad, while in my country it is used for solid tumors in various parts of the body, with good results. Since the implantation of radioactive particles into intracranial tumors requires intracranial operation, it is risky and requires high technical requirements, so there are relatively few units in the country that carry out this technology. On the other hand, it is difficult for doctors to master this technology through practice in a short period of time, and they need to follow senior doctors for a long time to practice actual operation skills in surgery.

[0004] Intracranial tumor radioactive particle implantation is a procedure that involves percutaneous skull drilling under the guidance of imaging equipment (CT, MRI), direct puncture of the intracranial tumor, and implantation of an iodine-125 particle radioactive source into the tumor. The tumor is destroyed by short-range radiation, and the particles continuously (for 180 days) release low-energy radiation to kill tumor cells.

[0005] A Chinese invention patent with publication number CN117752927A discloses a puncture needle assembly for radiation source implantation surgery, including a puncture needle sheath, a rigid needle core, a flexible needle core, and a needle sheath connector. The puncture needle sheath is a hollow tubular structure. The needle sheath connector is connected to the rear of the puncture needle sheath. The front end of the puncture needle sheath is provided with a first sharp portion, and the front end of the rigid needle core is provided with a second sharp portion. The rear end of the rigid needle core is provided with a second stop step. When the rigid needle core is fully inserted into the puncture needle sheath and the second stop step is abutted against the needle sheath connector, the first sharp portion and the second sharp portion are combined to form a sharp needle tip.

[0006] The above scheme provides a puncture needle assembly that can effectively prevent the puncture needle sheath from being blocked by blood by alternately piercing the rigid needle core and the flexible needle core into the puncture needle sheath. However, this flexible puncture needle sheath is not suitable for radiotherapy of intracranial tumors. In addition, in the actual operation, since the diameter of the radioactive particle implantation needle (i.e., the puncture needle) is very small, in order to facilitate the doctor's manual operation, it is usually necessary to install a handle at the end of the radioactive particle implantation needle. If the handle is fixed to the end of the radioactive particle implantation needle, it is very likely that the radioactive particle implantation needle will be "top-heavy", which may cause the radioactive particle implantation needle to shift in the patient's brain or even cause a safety accident.

[0007] In addition, with the development of science and technology, more and more surgeries can be performed using surgical robots. It is particularly important to provide a radioactive particle implantation needle assembly that can be used in conjunction with the surgical robot (the execution end).

[0008] Therefore, there is an urgent need for a radioactive particle implantation needle assembly that is simple in structure and can be used both for man and machine and can cooperate with the operating end of a surgical robot. Utility Model Content

[0009] The utility model aims to provide a radioactive particle implantation needle assembly for implanting a radioactive source into the brain, so as to partially solve or alleviate the above problems.

[0010] In order to solve the technical problems mentioned above, the utility model specifically adopts the following technical solutions: a radioactive particle implant needle assembly for inserting a radioactive source into the skull and brain, comprising an implant needle sheath and a radioactive particle implant needle, wherein the implant needle sheath and the first ends of the radioactive particle implant needle are respectively inclined to form pointed ends, a first mounting seat is provided at the second end of the implant needle sheath, a groove is provided at the center position of the first mounting seat, and a first clamping block is fixedly provided on the outer wall of the first mounting seat; a second mounting seat that cooperates with the groove is provided at the second end of the radioactive particle implant needle; when the radioactive particle implant needle is inserted into the implant needle sheath so that the second mounting seat cooperates with the groove, the radioactive particle implant needle assembly can cooperate with the execution end or manual operation handle of a surgical robot through the first clamping block.

[0011] As an improvement, a card slot is provided on the groove wall of the groove, and the card slot includes a first card slot extending in the axial direction, and a second card slot extending in the radial direction and connected to the first card slot; a buckle matching with the card slot is provided on the second mounting seat;

[0012] When the radioactive particle implantation needle is axially inserted into the implantation needle outer sheath so that the second mounting seat cooperates with the first mounting seat, the buckle cooperates with the first slot, and when the second mounting seat is rotated along the extension direction of the second slot, the buckle moves from the first slot to the second slot, thereby axially limiting the second mounting seat.

[0013] As an improvement, a second clamping block is arranged on the outer wall of the second mounting seat, and a second end of the first clamping block and a first end of the second clamping block are respectively provided with magnetic blocks that can attract each other;

[0014] When the radioactive particle implantation needle is inserted into the implantation needle outer sheath so that the groove and the second mounting seat cooperate, the second mounting seat rotates under the drive of the magnetic block to drive the buckle to rotate, and when the buckle rotates to the extreme position in the second clamping groove, the second clamping block is coaxial with the first clamping block.

[0015] As an improvement, two first clamping blocks are provided and are symmetrical about the central axis of the first mounting seat.

[0016] As an improvement, two second clamping blocks are provided and are symmetrical about the central axis of the second mounting seat.

[0017] As an improvement, the acute angle between the inclined extension line of the tip and the extension direction of the needle tube of the radioactive particle implantation needle is 20°-30°.

[0018] As an improvement, the first end of the tip smoothly transitions to form a blunt end; or, the radioactive particle implantation needle assembly also includes a drilling sheath, the first end of the drilling sheath is serrated, the second end of the drilling sheath is provided with a first mounting seat, the center position of the first mounting seat is provided with a groove, and a first clamping block is fixedly provided on the outer wall of the first mounting seat.

[0019] As an improvement, the handle comprises a gripping handle, the bottom of the gripping handle extends axially to form an accommodating cavity for accommodating the first mounting seat and the second mounting seat, the side wall of the accommodating cavity is provided with an elastic clip, and the first end of the clip is provided with a limiting protrusion that cooperates with the first end of the first clamping block;

[0020] When the second mounting seat is installed in the groove, the implant needle outer sheath and the radioactive particle implant needle are combined to form a radioactive particle implant needle assembly for implanting a radioactive source into the brain;

[0021] When the second end of the radioactive particle implantation needle assembly for implanting a radioactive source into the cranium is gradually inserted into the accommodating cavity along the axial direction from the opening end of the accommodating cavity, the first clamping block pushes the clip in a direction away from the axial direction, so that the first end of the clip is deformed;

[0022] When the second end of the radioactive particle implantation needle assembly for inserting a radioactive source into the skull contacts the bottom of the accommodating cavity, the clip is reset so that the limiting protrusion abuts against the first end of the first clamping block, so that the inner wall of the accommodating cavity and the limiting protrusion cooperate to form a clamping structure for clamping the first mounting seat, the second mounting seat and the first clamping block; the first end of the clip is provided with a handle facing the outside of the accommodating cavity, and the limiting protrusion is located at the connection between the handle and the clip.

[0023] As an improvement, the handle includes a first handle fixed on the clip, and a second handle fixed on the first handle, the acute angle between the extension line of the first handle and the axial direction is 30°-60°, and the acute angle between the extension line of the second handle and the axial direction is 20°-30°.

[0024] As an improvement, the width of the limiting protrusion gradually decreases from the second end to the first end to form a slope, so that when no external force acts on the handle, the opening size of the accommodating cavity gradually increases from the second end to the first end; the acute angle between the extension line of the slope surface of the limiting protrusion and the extension line of the central axis of the accommodating cavity is 30°-60°.

[0025] The principle and beneficial effects of the utility model are:

[0026] The present solution can easily combine the two into a whole by respectively providing a snap-fit ​​mounting seat at the outer sheath of the implant needle and the second end of the radioactive particle implant needle, and then the whole can be combined with the handle by snap-fitting, or installed on the execution end of the surgical robot (specifically, a accommodating cavity and a clip that are the same or similar to those in the handle can be provided in the execution end of the robot, so that during installation, the clip can be pushed open by the card block, so that the radioactive particle implant needle assembly or other components with a card block structure can enter the accommodating cavity through the opening of the accommodating cavity, and when the top of the radioactive particle implant needle assembly contacts the bottom of the accommodating cavity, the clip automatically resets and cooperates with the accommodating cavity to lock the assembly; correspondingly, during disassembly, the clip can be moved away from the accommodating cavity to expose the opening by pulling the handle, and then the mounting block can be pulled out of the accommodating cavity; of course, the execution end of the surgical robot can also adopt other locking structures, as long as it can cooperate with the card block and then drive the corresponding components to operate), so as to facilitate the next step of surgical operation. The structure of the radioactive particle implant needle assembly is simple, and the detachable outer sheath, radioactive particle implant needle and handle make the device more flexible and convenient and quick to use.

[0027] In summary, the present application provides a radioactive particle implantation needle assembly for implanting a radioactive source into the brain that is both human-machine and has a more flexible assembly method and a simpler structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative labor.

[0029] Figure 1a It is a schematic diagram of the overall structure of a bone-breaking needle according to an exemplary embodiment of the utility model;

[0030] Figure 1b It is a schematic diagram of the overall structure of a biopsy needle assembly according to an exemplary embodiment of the utility model;

[0031] Figure 1c This is a schematic diagram of the overall structure of a radioactive seed implantation needle assembly according to an exemplary embodiment of the present utility model;

[0032] Figure 1d This is a schematic diagram of the overall structure of a drug delivery needle according to an exemplary embodiment of the present utility model;

[0033] Figure 2a It is a schematic structural diagram of a pyramid-shaped tip of a bone-breaking needle and a biopsy needle according to an exemplary embodiment of the utility model;

[0034] Figure 2b A schematic structural diagram of a serrated tip of a biopsy sheath according to an exemplary embodiment of the present invention;

[0035] Figure 2c A schematic structural diagram of a serrated tip of an osteoclast sheath according to an exemplary embodiment of the present invention;

[0036] Figure 2d It is a structural schematic diagram of the closed end of a drug delivery needle according to an exemplary embodiment of the utility model;

[0037] Figure 2e It is a schematic structural diagram of an inclined tip of a radioactive seed implantation needle according to an exemplary embodiment of the utility model;

[0038] Figure 3a It is a schematic diagram of the overall structure of the bone-breaking needle assembly and the handle after they are matched in an exemplary embodiment of the utility model;

[0039] Figure 3b It is a cross-sectional view of a bone-breaking needle assembly after being matched with a handle in an exemplary embodiment of the utility model;

[0040] Figure 4 for Figure 3a A schematic diagram of the partial three-dimensional structure of the middle handle portion;

[0041] Figure 5a for Figure 4 An exploded view of the structure shown after sectioning;

[0042] Figure 5b for Figure 4 An exploded view of the structure shown at another angle after the cross-section;

[0043] Figure 6a A state diagram of a first mounting seat and a second mounting seat before being combined in an exemplary embodiment of the utility model;

[0044] Figure 6b A state diagram of a first mounting seat and a second mounting seat in combination according to an exemplary embodiment of the utility model;

[0045] Figure 6c A state diagram of a first mounting seat and a second mounting seat after being combined in an exemplary embodiment of the utility model;

[0046] Figure 7a This is a state diagram before the drilling sheath, the biopsy sheath and the biopsy needle are assembled in an exemplary embodiment of the utility model;

[0047] Figure 7b This is a state diagram of the drilling sheath, biopsy sheath and biopsy needle after they are combined in an exemplary embodiment of the present invention.

[0048] Markings in the figure: 1. Drilling sheath; 2. Bone-breaking needle; 3. Biopsy needle sheath; 4. Biopsy needle; 5. Radioactive particle implantation needle; 51. Tip; 6. Drug delivery needle; 61. Closed end; 62. Drug delivery hole; 7. First mounting seat; 71. Groove; 72. First clamping block; 73. Slot; 731. First slot; 732. Second slot; 8. Second mounting seat; 81. Second clamping block; 82. Buckle; 9. Handle; 91. Holding handle; 92. Accommodating cavity; 93. Clip; 931. Handle; 94. Limiting protrusion; 10. Magnetic block; 11. Sawtooth; 12. Bone-breaking needle assembly; 13. Biopsy needle assembly; 14. Radioactive particle implantation needle assembly. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Herein, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0051] In this document, the terms "upper", "lower", "inner", "outer", "front", "rear", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In this document, unless otherwise clearly specified or limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0053] Herein "and / or" includes any and all combinations of one or more of the associated listed items.

[0054] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0055] The embodiment is basically as shown in Figure 1- Figure 7b As shown:

[0056] The utility model provides a human-machine dual-purpose skull puncture device with a detachable handle, comprising a drilling sheath and a bone-breaking needle that cooperate with each other, the drilling sheath comprising a first outer sheath tube, and correspondingly, the bone-breaking needle comprising a bone-breaking needle core that can penetrate the first outer sheath tube and is hollow inside, and the length of the bone-breaking needle core is close to that of the first outer sheath tube.

[0057] The first ends of the first outer sheath and the bone-breaking needle core are serrated and pyramidal, respectively; when the bone-breaking needle core is inserted into the first outer sheath so that the drilling outer sheath and the bone-breaking needle cooperate to form a bone-breaking needle assembly, the first ends of the two are close to each other, and the serrations at the first end of the drilling outer sheath and the pyramidal tip at the first end of the bone-breaking needle jointly form a bone-breaking drilling structure, and the two can simultaneously break bones, and the pyramidal tip and multiple tooth-like structures act on the patient's skull at the same time, so that the stress is relatively dispersed, which effectively reduces the situation where skull fractures or the tip of the bone-breaking device is stuck in the skull. At the same time, multiple tooth-like structures jointly break bones, which can cause the skull to be crushed into smaller fragments, thereby improving the bone-breaking efficiency.

[0058] The first outer sheath and the second end of the bone-breaking needle core are respectively installed with a first mounting seat and a second mounting seat, and the specific structures of the two mounting seats are as shown in Figure 6a-6c As shown:

[0059] A groove 71 is provided at the center of the first mounting seat, and a first clamping block 72 is fixedly provided on the outer wall of the first mounting seat.

[0060] In some embodiments, the second mounting seat can be just inserted into the groove, and the top of the second mounting seat is flush with the top of the first mounting seat, that is, the height of the second mounting seat is consistent with the height of the groove, so that when the second mounting seat is installed in the groove of the first mounting seat, the drilling sheath and the bone breaking needle are combined into a bone breaking needle assembly.

[0061] In some embodiments, a card slot 73 is provided on the groove wall of the groove 71, and the card slot 73 includes a first card slot 731 extending axially, and a second card slot 732 extending radially and connected to the first card slot 731, and a buckle 82 cooperating with the card slot is provided on the outer wall of the second mounting seat.

[0062] Taking the bone-breaking needle assembly as an example, when the bone-breaking needle is axially inserted into the drilling sheath so that the second mounting seat cooperates with the first mounting seat, the buckle 82 cooperates with the first slot 731. When the second mounting seat is rotated along the extension direction of the second slot 731, the buckle moves from the first slot 731 to the second slot 732, thereby axially limiting the second mounting seat.

[0063] Through the cooperation of the buckle 82 and the slot 73, the first mounting seat and the second mounting seat can be more firmly combined, thereby preventing the axial relative displacement of the drilling sheath and the bone-breaking needle during the operation to a certain extent.

[0064] In some embodiments, a second clamping block 81 is provided on the outer wall of the second mounting block, and the second end of the first clamping block 72 and the first end of the second clamping block 81 are respectively provided with magnetic blocks 10 that can attract each other; when the first mounting seat and the second mounting seat are matched, the second clamping block and the first clamping block are on the same axis.

[0065] When the buckle 82 is inserted into the first slot 731, the magnetic blocks 10 on the first block 72 and the second block 81 are close to each other to produce magnetic attraction, and the first mounting seat and the second mounting seat can rotate relative to each other under the action of the magnetic force. Finally, the two magnetic blocks 10 are adsorbed together, so that the buckle 82 enters the second slot 732 and is clamped. This process does not require manual rotation of the two mounting seats, or only requires manual application of a small force, which saves time and effort and is convenient and quick; at the same time, it also makes the combination of the two mounting seats more firmly; at the same time, it also ensures the consistency of the force between the outer sheath in the handle and the needle during specific operations.

[0066] Furthermore, the second mounting seat can be divided into a first seat body that cooperates with the groove and a second seat body fixed on the top of the first seat body, the second clamping block is arranged on the side wall of the second seat body, and the buckle is arranged on the side wall of the first seat body.

[0067] like Figure 3a-Figure 5b As shown, the device also includes a handle 9, which includes a gripping handle 91. The bottom of the gripping handle 91 extends axially to form a receiving cavity 92 for accommodating the first mounting seat and the second mounting seat. The side wall of the receiving cavity 92 is provided with an elastic clip, and the first end of the clip 93 is provided with a limiting protrusion 94 that cooperates with the first end of the first clamping block.

[0068] like Figure 3bAs shown, when the handle is installed on the bone-breaking needle assembly, the top of the second seat body fits with the bottom of the accommodating cavity, the side walls of the first mounting seat 7 and the side walls of the second seat body fit with the side walls of the accommodating cavity respectively, and at the same time, the limiting protrusion 94 abuts against the first end of the first clamping block, and the cavity wall of the accommodating cavity, the clip 93 and the limiting protrusion 94 together form a clamping structure for clamping the first mounting seat 7, the second mounting seat 8 and the first clamping block; so that the first mounting seat 7, the second mounting seat 8 and the handle are relatively fixed.

[0069] In some embodiments, the width of the limiting protrusion 94 gradually decreases from the second end to the first end to form a slope surface, so that when no external force acts on the handle, the opening size of the accommodating cavity gradually increases from the second end to the first end. Therefore, when the bone-breaking needle assembly is inserted into the accommodating cavity, the second end of the bone-breaking needle assembly can open the clip 93 along the slope of the limiting protrusion 94 without manual assistance, making the operation more convenient and quick.

[0070] In some embodiments, the acute angle between the extension line of the slope surface of the limiting protrusion 94 and the extension line of the central axis of the accommodating cavity is 30°-60° (preferably 45°).

[0071] In some embodiments, a handle is disposed at the first end of the clip 93 facing the outside of the accommodating cavity, and the limiting protrusion 94 is located at the connection between the handle and the clip 93, so that the operator can save effort when prying the clip 93 apart.

[0072] In some embodiments, the handle includes a first handle fixed on the clip, and a second handle fixed on the first handle. The acute angle between the extension line of the first handle and the axial direction is 30°-60° (preferably 45°), and the acute angle between the extension line of the second handle and the axial direction is 20°-30° (preferably 25°). By setting two sub-handles with different angles, the operator can save more effort during operation.

[0073] In some embodiments, in order to ensure the stability of the entire device and the coordination of operation, two first clamping blocks are provided and are symmetrical about the central axis of the first mounting seat; correspondingly, two second clamping blocks are provided and are symmetrical about the central axis of the second mounting seat; two clips and two handles are provided respectively and are symmetrical about the central axis of the accommodating cavity. Of course, the number of the above structures can also be adaptively adjusted according to actual needs.

[0074] The specific steps for installing the handle onto the bone needle assembly are as follows:

[0075] The second end of the bone-breaking needle assembly (i.e., the end with the mounting seat) is gradually axially introduced into the interior of the accommodating cavity from the open end of the accommodating cavity. At this time, due to the inclined surface structure of the limiting protrusion, the top of the block moves along the slope toward the interior of the accommodating cavity, pushing the clip in the axial direction. At this time, the opening is enlarged so that the mounting seat as a whole can enter the accommodating cavity. When the second end of the bone-breaking needle assembly contacts the bottom of the accommodating cavity, the clip is reset so that the limiting protrusion abuts against the bottom of the block. The inner wall of the accommodating cavity and the limiting protrusion cooperate to form a clamping structure for clamping the first mounting seat, the second mounting seat and the block, so that the bone-breaking needle assembly is relatively fixed to the handle.

[0076] In other embodiments, the utility model also provides another skull puncture device, which includes the above-mentioned components and also includes a biopsy sheath and a biopsy needle, wherein the biopsy sheath includes a second outer sheath tube, the first end of which is serrated, and correspondingly, the biopsy needle includes a biopsy needle core which can penetrate the second outer sheath tube and is hollow inside, and the first end of the biopsy needle core is pyramidal; at the same time, the biopsy needle sheath and the second end of the biopsy needle are respectively provided with the first mounting seat and the second mounting seat; wherein, the pyramidal biopsy needle core can easily destroy part of the tumor tissue in the patient's skull when rotating, and take it out of the patient's brain to obtain biopsy tissue, and the serrated outer sheath tube can play a certain auxiliary role.

[0077] like Figure 1b As shown, when the first mounting seat and the second mounting seat are combined, the biopsy needle sheath and the biopsy needle are combined to form a biopsy needle assembly 13, and the serrations at the first end of the biopsy needle sheath and the pyramidal tip at the first end of the biopsy needle together form a biopsy sampling structure for crushing tumor tissue and taking samples.

[0078] In other embodiments, the utility model also provides another skull puncture device, which includes the above-mentioned components, and also includes an implantation needle outer sheath and a radioactive particle implantation needle, the implantation needle outer sheath includes a third outer sheath tube, the radioactive particle implantation needle includes a radioactive particle implantation needle tube that can penetrate the third outer sheath tube, and the radioactive particle implantation needle tube is provided with a radioactive particle channel for the radiation source to pass through, and the first ends of the third outer sheath tube and the radioactive particle implantation needle tube are respectively arranged to be oblique (i.e., pointed ends), and the second ends are respectively provided with a first mounting seat and a second mounting seat.

[0079] like Figure 1c As shown, when the first mounting seat and the second mounting seat are combined, the implantation needle outer sheath and the radioactive seed implantation needle are combined to form a radioactive seed implantation needle assembly 14 .

[0080] In some embodiments, Figure 2eThe acute angle between the tip 51 and the extension direction of the needle tube of the radioactive seed implantation needle 5 is 20°-30° (preferably 25°).

[0081] In some embodiments, in order to prevent the tip 51 of the radioactive seed implantation needle 5 from stabbing the patient, the first end of the tip 51 smoothly transitions to form a blunt end.

[0082] In other embodiments, the present invention also provides another skull puncture device, which includes the above-mentioned components and also includes a drug delivery needle 6, such as Figure 1d , Figure 2d The dosing needle 6 comprises a dosing needle tube that can penetrate the first outer sheath tube, the first end of the dosing needle tube is a closed end 61, the side wall of the closed end 61 is provided with at least one dosing hole 62 for the drug to pass through, and the second end is provided with a third mounting seat.

[0083] In some embodiments, in order to prevent the drug delivery needle from piercing the patient's brain tissue, the closed end is configured to be a smooth arc shape.

[0084] In some embodiments, the at least one drug administration hole 62 includes a plurality of drug administration holes 62 circumferentially arranged along the side wall of the drug administration needle.

[0085] It should be noted that the first mounting seat mentioned above can adopt the same structure, and correspondingly, the second mounting seat can also adopt the same structure, that is, the combination of the biopsy needle assembly, the radioactive particle implantation needle assembly and the bone-breaking needle assembly can be the same; and since the drug delivery needle does not need to be fixed with the outer sheath, the third mounting seat can adopt the same or similar design as the first mounting seat or the second mounting seat, and it is only necessary to ensure that a block is provided on the side wall of the third mounting seat so that it can cooperate with the handle.

[0086] For example, the third mounting seat includes a third seat body, and a third clamping block is arranged on the side wall of the third seat body. When the second end of the drug-delivering needle gradually enters the interior of the accommodating cavity along the axial direction from the opening end of the accommodating cavity, the third clamping block pushes the clip along the direction away from the axial direction, so that the first end of the clip is deformed; when the second end of the drug-delivering needle contacts the bottom of the accommodating cavity, the clip is reset so that the limiting protrusion abuts against the first end of the third clamping block, so that the inner wall of the accommodating cavity and the limiting protrusion cooperate to form a clamping structure for clamping the third mounting seat and the third clamping block.

[0087] When the medication needle is matched with the handle, a mounting block can be installed on the third mounting seat in advance, so that the size of the third mounting seat matches the size of the handle receiving cavity. Of course, the height of the third mounting seat can also be increased to match the height of the handle receiving cavity, so that there is no need to additionally set the above-mentioned mounting block.

[0088] In some embodiments, in order to facilitate the delivery of drugs to the patient's brain lesion site through the radioactive particle implantation needle assembly or the drug administration needle assembly, a first through hole is provided at the center position of the second mounting seat, and a second through hole matching the first through hole is provided on the handle. When in use, the radiation source or other drugs can be delivered to the lesion site through the second through hole, the second through hole, the radioactive particle implantation needle tube or the drug administration needle tube in sequence for treatment.

[0089] In some embodiments, Figure 2a The above-mentioned pyramid shape can be a triangular pyramid or a quadrangular pyramid.

[0090] In some embodiments, for example Figure 2b and Figure 2c Two examples of serrated tips are provided, and the serrated tips of the drilling sheath and the biopsy sheath are composed of at least three triangular serrations 11 (preferably three) arranged in a direction extending from the second end to the first end with at least three tips. Of course, the number of teeth on the serrated tips of the drilling sheath and the biopsy sheath may be different.

[0091] In some embodiments, the length of the biopsy sheath and the biopsy needle are basically the same, the length of the implant needle sheath and the radioactive particle implant needle are basically the same, and the length of the osteoclast sheath and the osteoclast needle are basically the same; further, the lengths of the biopsy needle assembly, the radioactive particle implant needle assembly and the drug delivery needle are basically the same.

[0092] In some embodiments, the length of the bone-breaking needle assembly is 5 cm, and the lengths of the biopsy needle assembly, the radioactive particle implantation needle assembly and the drug administration needle are all 15 cm. Of course, the lengths of the biopsy needle assembly, the radioactive particle implantation needle assembly and the drug administration needle can also be set to different lengths, for example, 10 cm, 18 cm, 20 cm.

[0093] In some embodiments, the diameter of the hollow bone-breaking needle can be set to a variety of specifications according to actual needs, preferably 16g.

[0094] In some embodiments, the diameter of the hollow biopsy needle, radioactive particle implantation needle, and drug administration needle is 20 g. Of course, various specifications can be set according to actual needs.

[0095] During the operation, taking manual operation as an example, the bone-breaking needle is first combined with the drilling sheath, and then the handle is installed to break the bone in the patient's brain and the front end of the sheath is inserted into the patient's skull. Then the handle is removed and the bone-breaking needle is taken out of the drilling sheath. At this time, the first sheath establishes a passage to the inside of the skull;

[0096] When sampling is required, a handle is installed on the biopsy needle assembly, and then the biopsy needle assembly is inserted into the first outer sheath tube for operation. During the operation, the biopsy needle assembly can move up and down relative to the drilling outer sheath. After the sampling is completed, the biopsy needle assembly and the drilling outer sheath are taken out of the patient's brain in turn.

[0097] Similarly, when a radioactive source (such as iodine-125 radioactive particles) needs to be implanted into the patient's brain, a handle is installed on the radioactive particle implantation needle assembly, and then the radioactive particle implantation needle assembly is inserted into the first outer sheath tube for operation. During the operation, the radioactive particle implantation needle assembly can move up and down relative to the drilling outer sheath. Each time a radioactive source is implanted, the radioactive particle implantation needle assembly is withdrawn a little until the radioactive source is implanted. The radioactive particle implantation needle assembly and the drilling outer sheath are then removed from the patient's brain in turn.

[0098] Similarly, when it is necessary to place the drug into the patient's brain, a handle is installed on the drug administration needle, and then the drug administration needle is inserted into the first outer sheath for operation. During the operation, the drug administration needle can move up and down relative to the drilling outer sheath. After the drug administration is completed, the drug administration needle and the drilling outer sheath can be removed from the patient's brain in turn.

[0099] The above-mentioned usage process is a manual operation process. Since the handle in this solution is detachable, it can of course also be applied to surgical robot operations (the component is combined with the execution end of the surgical robot through the mounting seat). The other steps of the machine operation are basically the same as the above steps.

[0100] In summary, this solution comprehensively provides a skull puncture device with a detachable handle that has a simple structure, is easy to operate, and has a good bone-breaking effect, and can be used by both robots and humans. At the same time, in this solution, the entire surgical operation process can be completed with one handle, and there is no need to install handles on each component separately. It has the characteristics of simple structure and easy operation.

[0101] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article 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, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0102] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain, characterized in that: It includes an implant needle sheath and a radioactive particle implant needle, wherein the first ends of the implant needle sheath and the radioactive particle implant needle are respectively inclined to form pointed ends, a first mounting seat is provided at the second end of the implant needle sheath, a groove is provided at the center position of the first mounting seat, and a first clamping block is fixedly provided on the outer wall of the first mounting seat; a second mounting seat that matches the groove is provided at the second end of the radioactive particle implant needle; when the radioactive particle implant needle is inserted into the implant needle sheath so that the second mounting seat matches the groove, the radioactive particle implant needle assembly can match with the execution end of the surgical robot or the manual operation handle through the first clamping block.

2. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 1, characterized in that: A card slot is provided on the groove wall of the groove, and the card slot includes a first card slot extending axially, and a second card slot extending radially and connected to the first card slot; a buckle cooperating with the card slot is provided on the second mounting seat; when the radioactive particle implantation needle is axially inserted into the outer sheath of the implantation needle so that the second mounting seat cooperates with the first mounting seat, the buckle cooperates with the first card slot, and when the second mounting seat is rotated along the extension direction of the second card slot, the buckle moves from the first card slot to the second card slot, thereby axially limiting the second mounting seat.

3. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 2, characterized in that: A second clamping block is arranged on the outer wall of the second mounting seat, and a second end of the first clamping block and a first end of the second clamping block are respectively provided with magnetic blocks that can attract each other; When the radioactive particle implantation needle is inserted into the implantation needle outer sheath so that the groove and the second mounting seat cooperate, the second mounting seat rotates under the drive of the magnetic block to drive the buckle to rotate, and when the buckle rotates to the extreme position in the second clamping groove, the second clamping block is coaxial with the first clamping block.

4. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 3, characterized in that: Two first clamping blocks are provided and are symmetrical about the central axis of the first mounting seat.

5. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 4, characterized in that: Two second clamping blocks are provided and are symmetrical about the central axis of the second mounting seat.

6. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to any one of claims 1 to 5, characterized in that: The acute angle between the inclined extension line of the tip and the extension direction of the needle tube of the radioactive particle implantation needle is 20°-30°.

7. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to any one of claims 1 to 5, characterized in that: The first end of the tip smoothly transitions to form a blunt end; or, the radioactive particle implantation needle assembly also includes a drilling outer sheath, the first end of the drilling outer sheath is serrated, the second end of the drilling outer sheath is provided with a first mounting seat, the center position of the first mounting seat is provided with a groove, and a first clamping block is fixedly provided on the outer wall of the first mounting seat.

8. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to any one of claims 1 to 5, characterized in that: The handle comprises a gripping handle, the bottom of the gripping handle extends axially to form a receiving cavity for receiving the first mounting seat and the second mounting seat, the side wall of the receiving cavity is provided with an elastic clip, the first end of the clip is provided with a limiting protrusion matched with the first end of the first clamping block; When the second mounting seat is installed in the groove, the implant needle outer sheath and the radioactive particle implant needle are combined to form a radioactive particle implant needle assembly for implanting a radioactive source into the brain; When the second end of the radioactive particle implantation needle assembly for implanting a radioactive source into the cranium is gradually inserted into the accommodating cavity along the axial direction from the opening end of the accommodating cavity, the first clamping block pushes the clip in a direction away from the axial direction, so that the first end of the clip is deformed; When the second end of the radioactive particle implantation needle assembly for inserting a radioactive source into the skull contacts the bottom of the accommodating cavity, the clip is reset so that the limiting protrusion abuts against the first end of the first clamping block, so that the inner wall of the accommodating cavity and the limiting protrusion cooperate to form a clamping structure for clamping the first mounting seat, the second mounting seat and the first clamping block; the first end of the clip is provided with a handle facing the outside of the accommodating cavity, and the limiting protrusion is located at the connection between the handle and the clip.

9. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 8, characterized in that: The handle includes a first handle fixed on the clip, and a second handle fixed on the first handle. The acute angle between the extension line of the first handle and the axial direction is 30°-60°, and the acute angle between the extension line of the second handle and the axial direction is 20°-30°.

10. A radioactive particle implantation needle assembly for implanting a radioactive source into the brain according to claim 9, characterized in that: The width of the limiting protrusion gradually decreases from the second end to the first end to form a slope shape, so that when no external force acts on the handle, the opening size of the accommodating cavity gradually increases from the second end to the first end; the acute angle between the extension line of the slope surface of the limiting protrusion and the extension line of the central axis of the accommodating cavity is 30°-60°.

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