Positioning stent for radioactive seed implantation

Abstract

The present application relates to a positioning bracket for radioactive seed implantation, which is used to locate the position of radioactive seed implantation, and includes: a base frame, a connecting frame, a swing arm and a mounting frame, wherein the base frame is suitable for fixed installation on a CT bed plate; the connecting frame is slidably installed on the top of the base frame, and the swing arm is rotatably installed on the top of the connecting frame; a fixed clamp block is slidably installed on the side of the swing arm that is not connected to the connecting frame, and the mounting frame includes a universal mechanism and a fixed seat; the fixed clamp block is clamped on one side of the universal mechanism, and the fixed seat is fixedly installed on the other side of the universal mechanism, and the fixed seat is suitable for installing an inclinometer. The position can be adjusted by adjusting the connecting frame, the swing arm and the universal mechanism, and the radioactive seed implantation positioning process is simple, which is convenient for doctors to make preoperative preparations.

Description

Technical Field

[0001] The present disclosure relates to the field of medical devices, and in particular to a positioning bracket for radioactive seed implantation. Background Art

[0002] Radioactive seed implantation therapy mainly relies on stereotactic systems to accurately implant radioactive seeds into the tumor. Micro-radiation sources emit continuous, short-range radiation to maximally damage tumor tissue while leaving normal tissue undamaged or only minimally damaged. Currently, the positioning stent for radioactive seed implantation is still difficult, which brings inconvenience to clinical treatment. Summary of the invention

[0003] In view of this, the present disclosure proposes a positioning bracket for radioactive seed implantation, which can be adjusted in position by adjusting the connecting frame, the swing arm, and the universal mechanism. The radioactive seed implantation positioning process is simple, which facilitates the doctor's preoperative preparation.

[0004] According to one aspect of the present disclosure, there is provided a positioning bracket for radioactive seed implantation, comprising: a base frame, a connecting frame, a swing arm and a mounting frame, wherein the base frame is suitable for being fixedly mounted on a CT bed board;

[0005] The connecting frame is slidably mounted on the top of the base frame, and the swing arm is rotatably mounted on the top of the connecting frame;

[0006] A fixed clamp block is slidably mounted on one side of the swing arm that is not connected to the connecting frame, and the mounting frame includes a universal mechanism and a fixing seat;

[0007] The fixed clamp block is clamped on one side of the universal mechanism, and the fixed seat is fixedly installed on the other side of the universal mechanism. The fixed seat is suitable for installing an inclinometer.

[0008] In a possible implementation, the connecting frame includes a seat body and a lifting frame;

[0009] The seat body is slidably mounted on the top of the base frame, the fixed end of the lifting frame is fixedly mounted on the top of the seat body, and the seat body is provided with a first locking mechanism for locking the seat body and the base frame;

[0010] The swing arm is rotatably mounted on the top of the lifting end of the lifting frame.

[0011] In a possible implementation, the lifting frame includes a primary frame body and a secondary frame body;

[0012] The primary frame is in the shape of a hollow column, and one end of the primary frame is fixedly mounted on the top of the base;

[0013] A slide hole is provided on both side walls of the first frame body, the two slide holes are arranged opposite to each other, and the two slide holes are provided along the length direction of the first frame body;

[0014] The secondary frame is columnar, and the secondary frame is slidably installed inside the hollow cavity of the primary frame;

[0015] A fastening screw is passed through the secondary frame, and the two ends of the fastening screw extend out of the two slideway holes respectively, and fastening nuts are screwed on the two ends of the fastening screw extending out of the sliding holes, which are used to lock the primary frame and the secondary frame;

[0016] The swing arm is rotatably mounted on the top of the secondary frame.

[0017] In a possible implementation, the swing arm includes a rotating seat and a slide rail, the rotating seat is installed on the top of the connecting frame, and the rotating seat rotates around the axis of the connection;

[0018] The slide rail is fixedly mounted on the top of the rotating seat, and the fixed clamping block is slidably mounted on the top of the slide rail.

[0019] In a possible implementation, the fixed clamp block includes a lower clamp block and an upper clamp block;

[0020] The lower clamping block and the upper clamping block are both in the shape of rectangular plates, the lower clamping block is slidably mounted on the swing arm, and the upper clamping block is detachably mounted on the top of the upper clamping block;

[0021] The lower clamping block is provided with a first groove on one side facing the upper clamping block, and the upper clamping block is provided with a second groove on one side facing the lower clamping block. The first groove is connected to the second groove, and the universal mechanism is inserted into the cavity formed by the first groove and the second groove.

[0022] In a possible implementation, the universal mechanism includes a universal joint and an extension plate, and one side of the extension plate is clamped on the fixed clamp block;

[0023] A bending portion is provided on one side of the extension plate away from the top, and the bending portion is bent toward the bottom frame;

[0024] The universal joint is fixedly mounted on a side of the bent portion that is not connected to the extension plate.

[0025] In a possible implementation manner, the universal joint is a damping universal joint.

[0026] In a possible implementation, a fixing frame is further provided on the chassis. There are more than two fixing frames, and the more than two fixing frames are all slidably mounted on the chassis. One side of the more than two fixing frames that is not connected to the chassis is adapted to be connected to the CT bed board;

[0027] More than two second locking mechanisms are provided on the more than two fixing frames for fastening the fixing frames, the chassis and the CT bed board.

[0028] In a possible implementation, the fixing frame includes a first fixing frame and a second fixing frame;

[0029] The first fixing frame includes a first side plate, a second side plate and a third side plate. The first side plate, the second side plate and the third side plate are all plate-shaped, and the first side plate, the second side plate and the third side plate are connected in a "U" shape. The first side plate is provided with a bending part that bends towards the third side plate;

[0030] The bottom of the first side plate is slidably connected to the top of the chassis, and the bending part is attached to the side wall of the chassis;

[0031] A first through hole is formed in the plate surface of the first side plate, and a second through hole is formed in the plate surface of the third side plate. The first through hole and the second through hole are coaxially arranged. The second locking mechanism includes a locking bolt and a locking nut;

[0032] The locking bolt passes through the first through hole and the chassis, and the locking nut is screwed on the side of the locking bolt passing through the chassis.

[0033] In a possible implementation, the chassis, the connecting frame, the swing arm and the mounting frame are all made of aluminum alloy or PEEK carbon fiber material.

[0034] The positioning bracket for radioactive seed implantation in the embodiment of the present application is used in radioactive seed implantation or biopsy, and is used for tumor puncture biopsy or radioactive seed implantation under image guidance. A coplanar guide plate can be detachably mounted on the fixed seat, and an inclinometer is mounted on the coplanar guide plate. The universal mechanism connected to the fixed seat is adjusted according to the X / Y axis angle displayed by the inclinometer until the needle insertion angle is reached. The horizontal and vertical installation of the base frame, the connecting frame, the swing arm and the mounting frame facilitates alignment with the CT laser coordinates. The connecting frame is slidably mounted on the base frame so that the connecting frame can move along the length direction of the base frame. The universal mechanism is slidably connected to the swing arm through a fixed clamp to facilitate adjustment of the position of the inclinometer connected to the fixed seat, thereby maximally locking the position of the lesion scanned before surgery. The swing arm can be rotatably mounted on the top of the connecting frame, so that the swing arm can be flipped to either side. In summary, the positioning bracket for radioactive seed implantation in the embodiment of the present application can be adjusted in position by adjusting the connecting frame, the swing arm, and the universal mechanism. The radioactive seed implantation positioning process is simple, which facilitates the doctor's preoperative preparation.

[0035] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0037] Figure 1 A main structural diagram of a positioning bracket for radioactive seed implantation according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0038] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0039] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0042] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0043] Figure 1 FIG. 2 shows a main structure diagram of a positioning bracket for radioactive seed implantation according to an embodiment of the present application. Figure 1 As shown, the positioning bracket includes: a base frame 100, a connecting frame 200, a swing arm 300 and a mounting frame 400, wherein the base frame 100 is used for fixed installation on the CT bed plate. The connecting frame 200 is slidably installed on the top of the base frame 100, and the swing arm 300 is rotatably installed on the top of the connecting frame 200, so that when the connecting frame 200 is horizontally arranged, the swing arm 300 rotates around the axis with the vertical direction as the axis. A fixed clamping block 500 is slidably installed on the side of the swing arm 300 that is not connected to the connecting frame 200, so that the fixed clamping block 500 can slide along the length direction of the swing arm 300. The mounting frame 400 includes a universal mechanism 410 and a fixed seat 420, the fixed clamping block 500 is used to clamp the universal mechanism 410, and the fixed seat 420 is fixedly installed on the side of the universal mechanism 410 that is not clamped on the fixed clamping block 500, and the fixed seat 420 can be detachably connected to a coplanar guide plate, and the coplanar guide plate can be used to fix and install an inclinometer.

[0044] The positioning bracket for radioactive seed implantation in the embodiment of the present application is used in radioactive seed implantation or biopsy, and is used for tumor puncture biopsy or radioactive seed implantation under image guidance. A coplanar guide plate can be detachably mounted on the fixed seat 420, and an inclinometer is mounted on the coplanar guide plate. The universal mechanism 410 connected to the fixed seat 420 is adjusted according to the X / Y axis angle displayed by the inclinometer until the needle insertion angle is reached. The base frame 100, the connecting frame 200, the swing arm 300 and the mounting frame 400 are installed horizontally and vertically, which is convenient for alignment with the CT laser coordinates. The connecting frame 200 is slidably mounted on the base frame 100 so that the connecting frame 200 can move along the length direction of the base frame 100. The universal mechanism 410 is slidably connected to the swing arm 300 through the fixed clamp block 500 to facilitate the adjustment of the position of the inclinometer connected to the fixed seat 420, thereby maximally locking the position of the preoperative scanned lesion. The swing arm 300 can be rotatably mounted on the top of the connecting frame 200, so that the swing arm 300 can be flipped to either side. In summary, the positioning bracket for radioactive seed implantation in the embodiment of the present application can be adjusted in position by adjusting the connecting frame 200, the swing arm 300, and the universal mechanism 410. The radioactive seed implantation positioning process is simple, which facilitates the doctor's preoperative preparation.

[0045] In a possible implementation, the connecting frame 200 includes a seat body 210 and a lifting frame 220, the seat body 210 is slidably mounted on the top of the base frame 100, the fixed end of the lifting frame 220 is fixedly mounted on the top of the seat body 210, the seat body 210 is provided with a first locking mechanism for locking the seat body 210 and the base frame 100, and the swing arm 300 is rotatably mounted on the top of the lifting end of the lift. Thus, the positioning bracket for radioactive seed implantation in the embodiment of the present application can be adjusted in the vertical direction.

[0046] Furthermore, in a possible implementation, the lifting frame 220 includes a primary frame and a secondary frame, the primary frame is in the shape of a hollow column, and one end of the primary frame is fixedly mounted on the top of the seat body 210. A slide hole is provided on the opposite side walls of the primary frame, that is, a first slide hole and a second slide hole are provided on the opposite side walls of the primary frame, respectively, and the first sliding hole and the second sliding hole are arranged oppositely, and the first slide hole and the second slide hole are both provided along the length direction. The secondary frame is in the shape of a column, and the secondary frame matches the hollow cavity of the primary frame so that the secondary frame can be slidably mounted inside the hollow cavity of the primary frame. A fastening screw is passed through the secondary frame, and the two ends of the fastening screw extend out of the two slide holes respectively, and fastening nuts are screwed on the two ends of the fastening screw extending out of the sliding hole for locking the primary frame and the secondary frame.

[0047] Here, it should be noted that the primary frame and the secondary frame are both in the shape of a square column, the first slide hole and the second slide hole are both in the shape of an oblong hole, and the first locking mechanism can be provided with two groups, and the two groups of first locking mechanisms are respectively arranged on both sides of the primary frame. Each group of locking mechanisms includes a first screw, a first nut and a second nut, the first screw passes through the seat body 210 and the base frame 100, and the first nut and the second nut are respectively arranged at both ends of the first screw, so as to fix the connecting frame 200 on the base frame 100 by rotating the first nut and the second nut. Here, it should also be noted that the first nut is in the shape of a cone, and a push plate is provided on the conical surface of the first nut, and the plate surface of the push plate is arranged perpendicular to the conical surface of the first nut. Here, it should also be noted that there are more than two push plates, and the more than two push plates are evenly distributed around the axis of the first nut. Here, it should also be noted that there are two push plates. Here, it should also be noted that the structure of the second nut is the same as that of the first nut.

[0048] Here, it should also be pointed out that the structure of the fastening nut can be the same as that of the first nut.

[0049] In a possible implementation, the first through hole and the second through hole are respectively formed on the opposite side walls of the primary frame where the first slide hole and the second slide hole are not formed, and the first through hole and the second through hole are both disposed adjacent to the seat body 210, and the axis of the first through hole and the axis of the second through hole are disposed to coincide with each other. Thus, the weight of the primary frame is reduced.

[0050] In one possible implementation, the swing arm 300 includes a rotating seat 310 and a slide rail 320. The rotating seat 310 is installed on the top of the connecting frame 200. The rotating seat 310 rotates around the axis of the connection. The slide rail 320 is fixedly installed on the top of the rotating seat 310, and the fixed clamp 500 is slidably installed on the top of the slide rail 320.

[0051] Here, it should be noted that a bearing hole may be provided at the top of the connecting frame 200, a bearing is fixed in the bearing hole, and the outer ring of the bearing is fixed to the bearing hole. A rotating rod is provided at the bottom of the swing arm 300, and the rotating rod is fixed to the inner ring of the bearing. Thus, the swing arm 300 can swing through the bearing.

[0052] Here, it should also be pointed out that the connecting frame 200 and the swing arm 300 can also be connected via a universal shaft.

[0053] In a possible implementation, the fixed clamping block 500 includes a lower clamping block and an upper clamping block. Both the lower clamping block and the upper clamping block are in the shape of rectangular plates. The lower clamping block is slidably mounted on the swing arm 300, and the upper clamping block is detachably mounted on the top of the lower clamping block. A first groove is formed on one side of the lower clamping block facing the upper clamping block, and a second groove is provided on one side of the upper clamping block facing the lower clamping block. The first groove and the second groove are in communication, and the universal mechanism 410 is inserted into the cavity formed by the first groove and the second groove.

[0054] In a possible implementation, the universal mechanism 410 includes a universal joint 411 and an extension plate 412. One side of the extension plate 412 is clamped on the fixed clamping block 500. A bent portion is provided on the side of the extension plate 412 away from the top, and the bent portion is bent towards the chassis 100. The universal joint 411 is fixedly mounted on the side of the bent portion not connected to the extension plate 412.

[0055] Furthermore, in a possible implementation, the universal joint 411 is a damping universal joint 411.

[0056] In a possible implementation, a fixed frame 600 is further provided on the chassis 100. There are two or more fixed frames 600, and the two or more fixed frames 600 are all slidably mounted on the chassis 100. The sides of the two or more fixed frames 600 not connected to the chassis 100 are used to connect to the CT bed board. Second locking mechanisms are provided on the two or more fixed frames 600 for fastening the fixed frame 600, the chassis 100, and the CT bed board.

[0057] Furthermore, in a possible implementation, the fixed frame 600 includes a first fixed frame and a second fixed frame. The first fixed frame includes a first side plate, a second side plate, and a third side plate. The first side plate, the second side plate, and the third side plate are all in the shape of plates. The first side plate, the second side plate, and the third side plate are connected in a "U" shape. The first side plate is provided with a bent portion that bends towards the third side plate. The bottom of the first side plate is slidably connected to the top of the chassis 100, and the bent portion is in contact with the side wall of the chassis 100. A first through hole is formed on the plate surface of the first side plate, and a third through hole is formed on the plate surface of the third side plate. The first through hole and the second through hole are coaxially arranged. The second locking mechanism includes a locking bolt and a locking nut. The locking bolt passes through the first through hole and the chassis 100, and the locking nut is screwed on the side of the locking bolt passing through the chassis 100.

[0058] Here, it should be noted that a knob can be provided on the top of the locking bolt, thereby facilitating the rotation of the locking bolt. Here, it should also be noted that the knob can be in the shape of a disc, and the edge of the disc is wavy. Thus, the comfort when rotating the knob is increased.

[0059] In a possible implementation, the fixed seat 420 is in the shape of a box with an opening at the top. A clamp is provided on the side of the fixed seat 420背离 the universal mechanism 410. The clamp is in a "U" shape arranged along the length direction of the fixed seat 420. The opening of the "U" shape serves as the clamping mouth of the clamp to clamp the coplanar guide plate.

[0060] Here, it should be noted that grooves are provided at the tops of the opposite side walls of the fixed seat 420, thereby reducing the weight of the fixed seat 420.

[0061] In a possible implementation, the chassis 100, the connecting frame 200, the swing arm 300, and the mounting frame 400 are all made of aluminum alloy or PEEK carbon fiber. Thus, the weight of the positioning bracket for radioactive seed implantation in the embodiments of the present application is reduced, making the positioning bracket for radioactive seed implantation in the embodiments of the present application lighter.

[0062] The various embodiments of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary technical personnel in the technical field to understand the disclosed embodiments.

Claims

1. A positioning bracket for radioactive seed implantation, used for locating the position of radioactive seed implantation, characterized in that: include: A base frame, a connecting frame, a swing arm and a mounting frame, wherein the base frame is suitable for being fixedly mounted on a CT bed plate, and the base frame, the connecting frame, the swing arm and the mounting frame are installed horizontally and vertically; The connecting frame is slidably mounted on the top of the base frame, and the swing arm is rotatably mounted on the top of the connecting frame; A fixed clamp block is slidably mounted on one side of the swing arm that is not connected to the connecting frame, and the mounting frame includes a universal mechanism and a fixing seat; The fixed clamp block is clamped on one side of the universal mechanism, and the fixed seat is fixedly installed on the other side of the universal mechanism, and the fixed seat is suitable for installing an inclinometer; The connecting frame includes a seat body and a lifting frame; The seat body is slidably mounted on the top of the base frame, the fixed end of the lifting frame is fixedly mounted on the top of the seat body, and the seat body is provided with a first locking mechanism for locking the seat body and the base frame; The swing arm is rotatably mounted on the top of the lifting end of the lifting frame; The lifting frame includes a primary frame and a secondary frame; The primary frame is in the shape of a hollow column, and one end of the primary frame is fixedly mounted on the top of the base; A slide hole is provided on the opposite side walls of the first-stage frame, the two slide holes are arranged opposite to each other, and the two slide holes are provided along the length direction of the first-stage frame; The secondary frame is columnar, and the secondary frame is slidably installed inside the hollow cavity of the primary frame; A fastening screw is passed through the secondary frame, and the two ends of the fastening screw extend out of the two slide holes respectively, and fastening nuts are screwed on the two ends of the fastening screw extending out of the slide holes, which are used to lock the primary frame and the secondary frame; The swing arm is rotatably mounted on the top of the secondary frame; The swing arm comprises a rotating seat and a slide rail, wherein the rotating seat is mounted on the top of the connecting frame, and the rotating seat rotates around the axis of the connection; The slide rail is fixedly mounted on the top of the rotating seat, and the fixed clamp block is slidably mounted on the top of the slide rail; The universal mechanism comprises a universal joint and an extension plate, and one side of the extension plate is clamped on the fixed clamping block; A bending portion is provided on one side of the extension plate away from the top, and the bending portion is bent toward the bottom frame; The universal joint is fixedly mounted on a side of the bent portion that is not connected to the extension plate.

2. The positioning bracket for radioactive seed implantation according to claim 1, characterized in that: The fixed clamping block comprises a lower clamping block and an upper clamping block; The lower clamping block and the upper clamping block are both in the shape of rectangular plates, the lower clamping block is slidably mounted on the swing arm, and the upper clamping block is detachably mounted on the top of the upper clamping block; The lower clamping block is provided with a first groove on one side facing the upper clamping block, and the upper clamping block is provided with a second groove on one side facing the lower clamping block. The first groove is connected to the second groove, and the universal mechanism is inserted into the cavity formed by the first groove and the second groove.

3. The positioning bracket for radioactive seed implantation according to claim 1, characterized in that: The universal joint is a damping universal joint.

4. The positioning bracket for radioactive seed implantation according to claim 1, characterized in that: The base frame is also provided with a fixing frame, and the fixing frames are provided with more than two. The two or more fixing frames are slidably mounted on the base frame, and the side of the two or more fixing frames not connected to the base frame is suitable for connecting to the CT bed board; The second locking mechanism is provided on each of more than two of the fixing frames for fastening the fixing frames, the chassis and the CT bed board.

5. The positioning bracket for radioactive seed implantation according to claim 4, characterized in that: The fixing frame includes a first fixing frame and a second fixing frame; The first fixing frame includes a first side plate, a second side plate and a third side plate. The first side plate, the second side plate and the third side plate are all plate-shaped. The first side plate, the second side plate and the third side plate are connected in a "U" shape, and the first side plate is provided with a bending portion bent towards the third side plate; The bottom of the first side plate is slidably connected to the top of the chassis, and the bending portion is attached to the side wall of the chassis; A first through hole is formed on the plate surface of the first side plate, and a second through hole is formed on the plate surface of the third side plate. The first through hole and the second through hole are coaxially arranged. The second locking mechanism includes a locking bolt and a locking nut; The locking bolt penetrates through the first through hole and the chassis, and the locking nut is screwed on one side of the locking bolt penetrating through the chassis.

6. The positioning bracket for radioactive seed implantation according to claim 1, characterized in that: The chassis, the connecting frame, the swing arm and the mounting frame are all made of aluminum alloy or PEEK carbon fiber material.

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