Dosing needle assembly for dosing to brain and dosing needle

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a dosing needle assembly and a dosing needle for dosing to the brain, the dosing needle assembly comprises a dosing needle for dosing to the brain and a handle, the first end of the dosing needle is a closed end, at least one dosing hole is formed in the side wall of the closed end, and the dosing hole is communicated with the handle. A third mounting seat is arranged at the second end of the dosing needle; and a third clamping block is arranged on the side wall of the third mounting seat. The man-machine dual-purpose drug delivery needle assembly for craniocerebral drug delivery and the drug delivery needle are simple in structure and safer, and spray type drug delivery is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a drug administration needle assembly and a drug administration needle for administering drugs to 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 they can affect the entire body. This has also led to many hospitals being helpless when faced with complex intracranial tumors.

[0003] In view of the above situation, minimally invasive treatments are often used to treat brain tumors. For example, a channel is established in the patient's brain with the help of visualization equipment, and then intracranial medication is administered through the channel. The drug is sprayed and injected inside the patient's skull, thereby achieving a therapeutic effect on the patient.

[0004] Among them, the Chinese invention patent with publication number CN112220539A provides a drug-drug puncture needle, including a puncture needle tube, one side of the outer surface of the puncture needle tube is provided with multiple first reflective surfaces distributed at equal intervals along the length direction, and a second reflective surface facing the other side is provided near the head end of the puncture needle tube. This solution can accurately capture the position of the needle tip, so that it can accurately penetrate the drug-drug area and achieve precise drug administration; however, when treating key parts such as the brain, the internal tissue of the brain is relatively fragile, and the pointed puncture needle can easily injure the brain tissue. Once a deviation occurs, the consequences are unimaginable.

[0005] In addition, with the development of technology, more and more surgeries can be performed using surgical robots. It is particularly important to provide a drug delivery needle that can be used in conjunction with the surgical robot (the execution end).

[0006] Therefore, there is an urgent need for a human-machine dual-purpose drug delivery needle assembly that can perform approximately "spray-type" drug delivery. Summary of the Invention

[0007] The purpose of the utility model is to provide a drug delivery needle assembly for administering drugs to the brain, so as to partially solve or alleviate the above problems.

[0008] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions: a drug administration needle assembly for administering drugs to the brain, comprising a drug administration needle for administering drugs to the brain and a handle, wherein the first end of the drug administration needle is a closed end, and at least one drug administration hole is provided on the side wall of the closed end, and the second end of the drug administration needle is provided with a third mounting seat; and a third clamping block is provided on the side wall of the third mounting seat;

[0009] The handle includes a gripping handle, the bottom of which extends axially to form a receiving cavity for receiving the third mounting seat, the sidewall of which is provided with an elastic clip, the first end of which is provided with a limiting protrusion that cooperates with the first end of the third clamping block;

[0010] When the second end of the drug administration needle for administering drug to the brain is gradually inserted into the interior of the accommodating cavity along the axial direction from the open end of the accommodating cavity, the third clamping block pushes the clip in a direction away from the axial direction, so that the first end of the clip is deformed;

[0011] When the second end of the drug administration needle for administering drugs to the brain 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.

[0012] As an improvement, 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.

[0013] 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°.

[0014] As an improvement, two of the clips and two of the handles are respectively provided and are symmetrical about the central axis of the accommodating cavity.

[0015] As an improvement, the width of the limiting protrusion gradually decreases from its 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°.

[0016] The utility model also provides a drug administration needle for administering medication to the brain, comprising a drug administration needle for administering medication to the brain, wherein the first end of the drug administration needle is a closed end, and at least one drug administration hole is provided on the side wall of the closed end; the second end of the drug administration needle is provided with a third mounting seat; and the side wall of the third mounting seat is provided with a third clamping block;

[0017] When the drug administration needle is inserted into the drilling outer sheath so that the third mounting seat cooperates with the first mounting seat set at the second end of the drilling outer sheath, the drug administration needle can cooperate with the execution end or manual operation handle of the surgical robot through the third clamping block.

[0018] As an improvement, two third clamping blocks are provided and are symmetrical about the central axis of the third mounting seat.

[0019] As an improvement, the at least one drug administration hole is arranged along the circumference of the side wall of the drug administration needle for administering drug to the brain.

[0020] As an improvement, the closed end is in a smooth arc shape.

[0021] As an improvement, the length of the administration needle for administering medication to the brain is 15 cm.

[0022] The principle and beneficial effects of this utility model are:

[0023] This solution provides a snap-fit mounting seat at the second end of the drug-delivery needle, so that the drug-delivery needle can be easily combined with the handle through the mounting seat, or it can be installed on the execution end of the surgical robot (specifically, a accommodating cavity and clip that are the same or similar to those in the handle can be provided in the execution end of the robot, so that the clip can be pushed open by the card block during installation, so that the drug-delivery needle or other components with a card block structure can enter the accommodating cavity through the opening of the accommodating cavity. When the top of the drug-delivery needle contacts the bottom of the accommodating cavity, the clip automatically resets and cooperates with the accommodating cavity to lock the component; accordingly, when disassembling, the clip is 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), which is convenient for the next step of surgical operation. The drug-delivery needle has a simple structure, high flexibility in use, and is easy and quick to use.

[0024] In addition, the first end of the drug delivery needle in this solution adopts a closed end design with a smooth transition. Compared with the existing pointed needle tip, it can effectively prevent brain tissue from being punctured, thereby safely and effectively performing intracranial spray-type drug delivery.

[0025] In summary, the present application provides a dosing needle assembly and dosing needle for intracranial drug delivery that is simple in structure and safer by spraying the drug. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the various elements or parts are not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the various elements or parts are not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work.

[0028] Figure 1a This is a schematic diagram of the overall structure of a bone-breaking needle according to an exemplary embodiment of the present invention;

[0029] Figure 1b This is a schematic diagram of the overall structure of a biopsy needle assembly according to an exemplary embodiment of the present invention;

[0030] 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 invention;

[0031] Figure 1d This is a schematic diagram of the overall structure of a drug delivery needle according to an exemplary embodiment of the present invention;

[0032] Figure 2a This 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 present invention;

[0033] Figure 2b A schematic structural diagram of a serrated tip of a biopsy sheath according to an exemplary embodiment of the present invention;

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

[0035] Figure 2d This is a schematic structural diagram of the closed end of a drug delivery needle according to an exemplary embodiment of the present invention;

[0036] Figure 2eThis is a schematic structural diagram of an inclined tip of a radioactive seed implantation needle according to an exemplary embodiment of the present invention;

[0037] Figure 3a This 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 present invention;

[0038] Figure 3b This is a cross-sectional view of the bone-breaking needle assembly and the handle after being engaged in an exemplary embodiment of the present invention;

[0039] Figure 4 for Figure 3a A schematic diagram of the partial three-dimensional structure of the middle handle;

[0040] Figure 5a for Figure 4 An exploded view of the structure shown after sectioning;

[0041] Figure 5b for Figure 4 An exploded view of the structure shown at another angle after the cross-section;

[0042] Figure 6a This is a state diagram of an exemplary embodiment of the present invention before the first mounting seat and the second mounting seat are combined;

[0043] Figure 6b A state diagram of the first mounting seat and the second mounting seat in combination according to an exemplary embodiment of the present invention;

[0044] Figure 6c This is a diagram of a state where the first mounting seat and the second mounting seat are combined in an exemplary embodiment of the present utility model;

[0045] Figure 7a This is a diagram of a state before the drilling sheath, the biopsy sheath and the biopsy needle are assembled in an exemplary embodiment of the present invention;

[0046] Figure 7b This is a diagram of the state after the drilling sheath, biopsy sheath and biopsy needle are combined in an exemplary embodiment of the present invention.

[0047] Markings in the figure: 1. Drilling sheath; 2. Bone-breaking needle; 3. Biopsy needle sheath; 4. Biopsy needle; 5. Radioactive seed 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. Gripping handle; 92. Accommodating cavity; 93. Clip; 931. Handle; 94. Limiting protrusion; 10. Magnetic block; 11. Serration; 12. Bone-breaking needle assembly; 13. Biopsy needle assembly; 14. Radioactive seed implantation needle assembly. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] 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 meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0050] As used herein, terms such as "upper," "lower," "inner," "outer," "front," "back," "one end," and "the other end" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] As used herein, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model on a case-by-case basis.

[0052] As used herein, "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0054] The embodiment is basically as shown in Figure 1- Figure 7b As shown:

[0055] 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 comprises a first outer sheath tube, and correspondingly, the bone-breaking needle comprises 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.

[0056] 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 perform bone-breaking, 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 the skull is fractured or the tip of the bone-breaking device is stuck in the skull. At the same time, multiple tooth-like structures jointly break the bone, which can cause the skull to be crushed into smaller fragments, thereby improving the efficiency of bone-breaking.

[0057] The second ends of the first outer sheath and the bone-breaking needle core are respectively equipped with a first mounting seat and a second mounting seat. The specific structures of the two mounting seats are as follows. Figures 6a-6c As shown:

[0058] 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.

[0059] In some embodiments, the second mounting seat can be just stuck 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.

[0060] 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 that cooperates with the card slot is provided on the outer wall of the second mounting seat.

[0061] 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.

[0062] The cooperation between the buckle 82 and the slot 73 can make the first mounting seat and the second mounting seat 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.

[0063] 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.

[0064] 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, is convenient and quick; at the same time, it also makes the combination of the two mounting seats more firm; at the same time, it also ensures the consistency of force between the outer sheath in the handle and the needle during specific operation.

[0065] 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 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.

[0066] 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 an accommodating cavity 92 for accommodating the first mounting seat and the second mounting seat. The side wall of the accommodating 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 block.

[0067] like Figure 3b As 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.

[0068] In some embodiments, the width of the limiting protrusion 94 gradually decreases from its second end to the first end to form a sloped surface, so that when no external force is applied to the handle, the opening size of the accommodating cavity gradually increases from the second end to the first end. As a result, when the bone-breaking needle assembly is inserted into the accommodating cavity, the second end of the bone-breaking needle assembly can follow the slope of the limiting protrusion 94 to open the clip 93, without manual assistance, making the operation more convenient and quick.

[0069] 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°).

[0070] In some embodiments, the first end of the clip 93 is provided with a handle 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 more effort when prying the clip 93 apart.

[0071] 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.

[0072] 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 respectively provided 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.

[0073] The specific steps for installing the handle onto the bone puncture needle assembly are as follows:

[0074] 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 clamping 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 expanded 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 clamping 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 clamping block, so that the bone-breaking needle assembly and the handle are relatively fixed.

[0075] In other embodiments, the present invention also provides another skull puncture device, which includes the above-mentioned components and also includes a biopsy sheath and a biopsy needle. The biopsy sheath includes a second outer sheath tube, and the first end of the second outer sheath tube is serrated. Correspondingly, the biopsy needle includes a biopsy needle core that 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.

[0076] 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.

[0077] In other embodiments, the present invention also provides another skull puncture device, which includes the above-mentioned components, and also includes an implant needle outer sheath and a radioactive particle implant needle, the implant needle outer sheath includes a third outer sheath tube, the radioactive particle implant needle includes a radioactive particle implant needle tube that can pass through the third outer sheath tube, and a radioactive particle channel for the radiation source to pass through is provided in the radioactive particle implant needle tube. At the same time, the first ends of the third outer sheath tube and the radioactive particle implant needle tube are respectively set to be oblique (i.e., pointed), and the second ends are respectively provided with a first mounting seat and a second mounting seat.

[0078] like Figure 1c As shown, when the first mounting seat and the second mounting seat are combined, the implantation needle sheath and the radioactive seed implantation needle are combined to form a radioactive seed implantation needle assembly 14 .

[0079] In some embodiments, as Figure 2e The acute angle between the tip 51 and the extension direction of the needle tube of the radioactive seed implanting needle 5 is 20°-30° (preferably 25°).

[0080] 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.

[0081] 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 2dThe dosing needle 6 includes 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. The second end is provided with a third mounting seat.

[0082] In some embodiments, in order to prevent the drug administration needle from piercing the patient's brain tissue, the closed end is configured to be a smooth arc shape.

[0083] In some embodiments, the at least one dosing hole 62 comprises a plurality of dosing holes 62 circumferentially arranged along the side wall of the dosing needle.

[0084] It should be noted that the first mounting seats mentioned above can adopt the same structure, and accordingly, the second mounting seats 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 card block is provided on the side wall of the third mounting seat so that it can cooperate with the handle.

[0085] For example, the third mounting seat includes a third seat body, and a third clamping block is provided on the side wall of the third seat body. When the second end of the dosing needle is gradually inserted into the interior of the accommodating cavity along the axial direction from the open end of the accommodating cavity, the third 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 dosing 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.

[0086] 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 accommodating cavity.

[0087] 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 is provided on the handle to cooperate with the first through hole. 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.

[0088] In some embodiments, as Figure 2a , the above-mentioned pyramid shape can be a triangular pyramid or a quadrangular pyramid.

[0089] In some embodiments, for example Figure 2b and Figure 2c Two examples of serrated tips are provided. The serrated tips of the drilling sheath and the biopsy sheath are composed of at least three triangular serrations 11 (preferably three) arranged with at least three tips facing the second end and extending in a direction toward the first end. Of course, the number of serrations on the serrated tips of the drilling sheath and the biopsy sheath may be different.

[0090] In some embodiments, the length of the biopsy sheath and the biopsy needle is basically the same, the length of the implant needle sheath and the radioactive seed implant needle is basically the same, and the length of the osteoclast sheath and the osteoclast needle is basically the same; further, the length of the biopsy needle assembly, the radioactive seed implant needle assembly and the drug delivery needle are the same.

[0091] In some embodiments, the length of the bone-breaking needle assembly is 5 cm, and the lengths of the biopsy needle assembly, the radioactive seed implantation needle assembly and the drug administration needle are all 15 cm. Of course, the lengths of the biopsy needle assembly, the radioactive seed implantation needle assembly and the drug administration needle can also be set to different lengths, for example, 10 cm, 18 cm, 20 cm.

[0092] In some embodiments, the diameter of the hollow bone-breaking needle can be set to various specifications according to actual needs, preferably 16g.

[0093] In some embodiments, the diameter of the hollow biopsy needle, radioactive seed implantation needle, and drug administration needle is 20 g. Of course, various specifications can be set according to actual needs.

[0094] During the surgical operation, taking manual operation as an example, the bone-breaking needle is first combined with the drilling sheath, and then the handle is installed. The bone is broken in the patient's brain and the front end of the sheath is inserted into the patient's skull. The handle is then removed and the bone-breaking needle is removed from the drilling sheath. At this time, the first sheath has established a channel to the inside of the skull;

[0095] 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 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 removed from the patient's brain in turn.

[0096] 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 implant needle assembly, and then the radioactive particle implant needle assembly is inserted into the first outer sheath for operation. During the operation, the radioactive particle implant needle assembly can move up and down relative to the drilling outer sheath. Each time a radioactive source is implanted, the radioactive particle implant needle assembly is withdrawn a little until the radioactive source is implanted. The radioactive particle implant needle assembly and the drilling outer sheath are then removed from the patient's brain in turn.

[0097] Similarly, when it is necessary to place the drug into the patient's brain, a handle is installed on the drug delivery needle, and then the drug delivery needle is inserted into the first outer sheath for operation. During the operation, the drug delivery needle can move up and down relative to the drilling outer sheath. After the drug delivery is completed, the drug delivery needle and the drilling outer sheath can be removed from the patient's brain in turn.

[0098] 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 operation (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.

[0099] 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.

[0100] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0101] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A drug delivery needle assembly for administering drugs to the brain, characterized in that: The invention comprises a dosing needle and a handle for administering medication to the brain, wherein the first end of the dosing needle is a closed end, and the side wall of the closed end is provided with at least one dosing hole, and the second end of the dosing needle is provided with a third mounting seat; and the side wall of the third mounting seat is provided with a third clamping block; The handle includes a gripping handle, the bottom of which extends axially to form a receiving cavity for receiving the third mounting seat, the sidewall of which is provided with an elastic clip, the first end of which is provided with a limiting protrusion that cooperates with the first end of the third clamping block; When the second end of the drug administration needle for administering drug to the brain is gradually inserted into the interior of the accommodating cavity along the axial direction from the open end of the accommodating cavity, the third 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 drug administration needle for administering drugs to the brain 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.

2. A drug delivery needle assembly for administering drugs to the brain according to claim 1, characterized in that: 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.

3. The drug delivery needle assembly for administering drugs to the brain according to claim 2, 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°.

4. The drug delivery needle assembly for administering drugs to the brain according to claim 2, characterized in that: The clip and the handle are respectively provided with two and are symmetrical about the central axis of the accommodating cavity; or, it 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 the outer wall of the first mounting seat is fixedly provided with a first clamping block.

5. The drug delivery needle assembly for administering drugs to the brain according to claim 1, 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°.

6. A drug delivery needle for administering drugs to the brain, characterized in that: The first end of the drug administration needle is a closed end, and at least one drug administration hole is provided on the side wall of the closed end. The second end of the drug administration needle is provided with a third mounting seat; and a third clamping block is provided on the side wall of the third mounting seat. When the drug administration needle is inserted into the drilling outer sheath so that the third mounting seat cooperates with the first mounting seat set at the second end of the drilling outer sheath, the drug administration needle can cooperate with the execution end or manual operation handle of the surgical robot through the third clamping block.

7. The drug delivery needle for administering drugs to the brain according to claim 6, characterized in that: The third clamping blocks are provided in two and are symmetrical about the central axis of the third mounting seat.

8. The drug delivery needle for administering drugs to the brain according to claim 6, characterized in that: The at least one drug administration hole is arranged along the circumference of the side wall of the drug administration needle for administering drug to the cranium.

9. The drug delivery needle for administering drugs to the brain according to claim 6, characterized in that: The closed end is in a smooth arc shape.

10. The drug delivery needle for administering drugs to the brain according to claim 6, characterized in that: The length of the administration needle for administering drug to the brain is 15 cm.

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