Tumor radiotherapy positioning and guiding device

Abstract

The utility model provides a tumor radiotherapy positioning and guiding device which comprises a positioning sleeve, a positioning column is arranged in an inner cavity of the positioning sleeve, a source applicator channel, an inner ring insertion needle channel and an outer ring insertion needle channel are respectively arranged in an inner cavity of the positioning column, and an injection mechanism and an exhaust mechanism are respectively arranged on one side of the positioning column. A connecting mechanism is arranged on the outer side of the positioning sleeve, the injection mechanism comprises a nuclear magnetic resonance developing agent injection pipe, the nuclear magnetic resonance developing agent injection pipe is embedded and fixed to one side of the positioning column, an injection sealing plug is clamped in an inner cavity of the nuclear magnetic resonance developing agent injection pipe, and a first protruding block is fixedly connected to an inner cavity of the injection sealing plug; and the exhaust pipe is embedded and fixed on one side of the positioning column. The tumor radiotherapy positioning and guiding device provided by the utility model solves the problems that errors exist in traditional operation, and especially the positioning and guiding device cannot develop on a nuclear magnetic resonance image.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a tumor radiotherapy positioning and guiding device. Background Art

[0002] Three-dimensional implants and intracavitary radiotherapy are two important approaches to brachytherapy for gynecological tumors. However, most current positioning and guidance devices can only be visualized under CT. CT imaging can better distinguish bone tissue, while magnetic resonance imaging (MRI) has advantages for soft tissue imaging. Consequently, an increasing number of radiotherapy treatments are using MRI for simulated positioning and delineation of tumors and surrounding critical soft tissues.

[0003] However, the positioning guide can only be displayed on CT images. Therefore, the CT image and the magnetic resonance imaging (MRI) image need to be registered and fused to show the relative position relationship of the tumor, the important soft tissue around the tumor, and the positioning guide for formulating radiotherapy plans. The registration and fusion of CT and magnetic resonance imaging (MRI) images are prone to errors and are time-consuming and labor-intensive. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an easy-to-use tumor radiotherapy positioning and guiding device.

[0005] The tumor radiotherapy positioning guide device provided by the present invention includes a positioning sleeve, the inner cavity of the positioning sleeve is provided with a positioning column, the inner cavity of the positioning column is respectively provided with a source channel, an inner circle implantation needle channel and an outer circle interpolation needle channel, one side of the positioning column is respectively provided with an injection mechanism and an exhaust mechanism, and the outer side of the positioning sleeve is provided with a connecting mechanism.

[0006] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the injection mechanism includes a nuclear magnetic resonance contrast agent injection tube, the nuclear magnetic resonance contrast agent injection tube is embedded and fixed on one side of the positioning column, the inner cavity of the nuclear magnetic resonance contrast agent injection tube is clamped with an injection sealing plug, and the inner cavity of the injection sealing plug is fixedly connected to a first protrusion.

[0007] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the exhaust mechanism includes an exhaust pipe, the exhaust pipe is embedded and fixed on one side of the positioning column, the inner cavity of the exhaust pipe is clamped with an exhaust sealing plug, and the inner cavity of the exhaust sealing plug is fixedly connected to a second protrusion.

[0008] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the connecting mechanism includes a connecting frame, the connecting frame is fixed to the outside of the positioning sleeve, one side of the positioning column is fixedly connected to a fixing plate, one side of the fixing plate is fixedly connected to a fixing block, the outer side of the fixing block is slidably connected to the inner wall of the connecting frame, the inner cavity of the fixing block is provided with a stabilizing block, the outer side of the stabilizing block is provided with a stabilizing groove, and the inner cavity of the fixing block is fixedly connected to an elastic sheet.

[0009] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the bottom of the stabilizing block is fixedly connected to the limiting block, the inner cavity of the fixing block is provided with a limiting groove, and the outer side of the limiting block is clamped with the inner cavity of the limiting groove.

[0010] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the outer side of the positioning column is fixedly connected to a guide block, the inner wall of the positioning sleeve is provided with a guide groove, and the outer side of the guide block is slidably connected to the inner wall of the guide groove.

[0011] As the utility model provides a tumor radiotherapy positioning guide device, preferably, the outer sides of the inner circle insertion needle channel and the outer circle interpolation needle channel are fixedly connected with a first connecting rod, one end of the first connecting rod is fixedly connected to the inner wall of the positioning column, and the outer side of the source channel is fixedly connected with a second connecting rod, the number of the second connecting rods is set to four, and one end of the four second connecting rods is fixedly connected to the inner wall of the positioning column.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The tumor radiotherapy positioning guide device has the advantages that when the interior of the positioning column is filled with developer, the positioner can be visualized on tomographic scan images under CT and MRI. In particular, under MRI images, the relative positional relationship of the tumor, important soft tissues around the tumor, and the positioning guide can be displayed together, which brings convenience to the formulation of radiotherapy plans. In addition, by providing the first protrusion and the second protrusion, it is convenient for the user to pull out the injection sealing plug and the exhaust sealing plug. After the positioning column is inserted into the positioning sleeve, the fixing block can be stuck in the connecting frame. Then, the user can pass the stabilizing block through the top of the connecting frame and insert it into the inner cavity of the fixing block, so that the outer side of the elastic sheet is stuck in the stabilizing groove on the outer side of the stabilizing block, thereby fixing the stabilizing block and then stably fixing the fixing block in the connecting frame, thereby improving the connection stability between the positioning column and the positioning sleeve, and solving the errors in traditional operations, especially the problem that the positioning guide cannot be visualized on MRI images. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of the tumor radiotherapy positioning and guiding device provided by the present invention;

[0015] Figure 2 This is a side structural cross-sectional view of the positioning column of the utility model;

[0016] Figure 3 This is a structural cross-sectional view of the connecting mechanism of the utility model;

[0017] Figure 4 It is a partial structural sectional view of the utility model.

[0018] Numbers in the figure: 1. Positioning sleeve; 2. Positioning column; 3. Applicator channel; 4. Inner ring insertion needle channel; 5. Outer ring interpolation needle channel; 6. Injection mechanism; 601. MRI contrast agent injection tube; 602. Injection sealing plug; 603. First protrusion; 7. Exhaust mechanism; 701. Exhaust pipe; 702. Exhaust sealing plug; 703. Second protrusion; 8. Connecting mechanism; 801. Connecting frame; 802. Fixing plate; 803. Fixing block; 804. Stabilizing block; 805. Stabilizing groove; 806. Elastic sheet; 9. First connecting rod; 10. Second connecting rod; 11. Guide block; 12. Guide groove; 13. Limiting block; 14. Limiting groove. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,in Figure 1 A schematic structural diagram of a preferred embodiment of the tumor radiotherapy positioning and guiding device provided by the present invention; Figure 2 This is a side structural cross-sectional view of the positioning column of the utility model; Figure 3 This is a structural cross-sectional view of the connecting mechanism of the utility model; Figure 4 This is a partial structural cross-sectional view of the present invention. A tumor radiotherapy positioning guide device includes a positioning sleeve 1, the inner cavity of which is provided with a positioning post 2. The inner cavity of the positioning post 2 is provided with an applicator channel 3, an inner ring insertion needle channel 4, and an outer ring interpolation needle channel 5. An injection mechanism 6 and an exhaust mechanism 7 are provided on one side of the positioning post 2, and a connecting mechanism 8 is provided on the outer side of the positioning sleeve 1.

[0021] In this embodiment, the positioning column 2 is a hollow structure.

[0022] As a technical optimization solution of the present invention, the injection mechanism 6 includes an MRI contrast agent injection tube 601, which is embedded and fixed on one side of the positioning column 2. The inner cavity of the MRI contrast agent injection tube 601 is clamped with an injection sealing plug 602, and the inner cavity of the injection sealing plug 602 is fixedly connected to a first protrusion 603;

[0023] The exhaust mechanism 7 includes an exhaust pipe 701 , which is embedded and fixed on one side of the positioning column 2 . An exhaust sealing plug 702 is clamped in the inner cavity of the exhaust pipe 701 , and a second protrusion 703 is fixedly connected to the inner cavity of the exhaust sealing plug 702 .

[0024] In this embodiment, during MRI imaging, the exhaust sealing plug 702 and the injection sealing plug 602 in the exhaust pipe 701 and the MRI contrast agent injection pipe 601 are pulled out, and then the contrast agent is injected into the positioning column 2 through the MRI contrast agent injection pipe 601. The gas inside the positioning column 2 is discharged through the exhaust pipe 701. After the injection is completed, the injection sealing plug 602 and the exhaust sealing plug 702 are returned to their positions to seal the MRI contrast agent injection pipe 601 and the exhaust pipe 701. When the positioning column 2 is filled with contrast agent, the locator can be displayed on the tomographic image under CT and MRI. In particular, under MRI images, the relative position relationship of the tumor, important soft tissues around the tumor, and the positioning guide can be displayed together, which brings convenience to the formulation of radiotherapy plans. In addition, the provision of the first protrusion 603 and the second protrusion 703 makes it easy for the user to pull out the injection sealing plug 602 and the exhaust sealing plug 702.

[0025] As a technical optimization solution of the present invention, the connecting mechanism 8 includes a connecting frame 801, which is fixed to the outside of the positioning sleeve 1, and a fixing plate 802 is fixedly connected to one side of the positioning column 2, and a fixing block 803 is fixedly connected to one side of the fixing plate 802. The outer side of the fixing block 803 is slidingly connected to the inner wall of the connecting frame 801, and the inner cavity of the fixing block 803 is provided with a stabilizing block 804, and a stabilizing groove 805 is opened on the outer side of the stabilizing block 804, and the inner cavity of the fixing block 803 is fixedly connected with an elastic sheet 806.

[0026] In this embodiment: after the positioning column 2 is inserted into the positioning sleeve 1, the fixing block 803 can be inserted into the connecting frame 801, and then the user can pass the stabilizing block 804 through the top of the connecting frame 801 and insert it into the inner cavity of the fixing block 803, so that the outer side of the elastic sheet 806 is stuck in the stabilizing groove 805 on the outside of the stabilizing block 804, thereby fixing the stabilizing block 804, and then the fixing block 803 is stably fixed in the connecting frame 801, thereby improving the connection stability between the positioning column 2 and the positioning sleeve 1.

[0027] As a technical optimization solution of the present invention, the bottom of the stabilizing block 804 is fixedly connected to the limiting block 13 , the inner cavity of the fixing block 803 is provided with a limiting groove 14 , and the outer side of the limiting block 13 is engaged with the inner cavity of the limiting groove 14 .

[0028] In this embodiment, the limiting groove 14 and the limiting block 13 are provided later to improve the connection stability between the stabilizing block 804 and the fixing block 803 .

[0029] As a technical optimization solution of the present invention, a guide block 11 is fixedly connected to the outer side of the positioning column 2, a guide groove 12 is opened on the inner wall of the positioning sleeve 1, and the outer side of the guide block 11 is slidably connected to the inner wall of the guide groove 12.

[0030] In this embodiment, by providing the guide groove 12 and the guide block 11 , it is not only easy to insert the positioning column 2 into the positioning sleeve 1 , but also the positioning column 2 can be limited, thereby improving the stability between the positioning column 2 and the positioning sleeve 1 .

[0031] As a technical optimization solution of the present invention, the outer sides of the inner ring insertion needle channel 4 and the outer ring interpolation needle channel 5 are fixedly connected with a first connecting rod 9, one end of the first connecting rod 9 is fixedly connected to the inner wall of the positioning column 2, and the outer side of the source channel 3 is fixedly connected with a second connecting rod 10, the number of the second connecting rods 10 is set to four, and one end of the four second connecting rods 10 is fixedly connected to the inner wall of the positioning column 2.

[0032] In this embodiment, the first connecting rod 9 and the second connecting rod 10 are provided to improve the stability of the inner ring implantation needle channel 4, the outer ring interpolation needle channel 5 and the applicator channel 3.

[0033] The working principle of the tumor radiotherapy positioning and guiding device provided by the utility model is as follows:

[0034] During MRI imaging, the exhaust sealing plug 702 and the injection sealing plug 602 in the exhaust pipe 701 and the MRI contrast agent injection pipe 601 are pulled out, and then the contrast agent is injected into the positioning column 2 through the MRI contrast agent injection pipe 601, and the gas inside the positioning column 2 is discharged through the exhaust pipe 701. After the injection is completed, the injection sealing plug 602 and the exhaust sealing plug 702 are returned to their positions to seal the MRI contrast agent injection pipe 601 and the exhaust pipe 701. When the positioning column 2 is filled with contrast agent, the locator can be developed on the tomographic image under CT and MRI, especially under MRI images, the tumor, important soft tissues around the tumor, and the positioning guide can be displayed on the tomographic image. The relative position relationship thereof is displayed, which brings convenience to the formulation of radiotherapy plan, and by setting the first protrusion 603 and the second protrusion 703, it is convenient for the user to pull out the injection sealing plug 602 and the exhaust sealing plug 702. After the positioning column 2 is inserted into the positioning sleeve 1, the fixing block 803 can be stuck in the connecting frame 801, and then the user can pass the stabilizing block 804 through the top of the connecting frame 801 and insert it into the inner cavity of the fixing block 803, so that the outer side of the elastic sheet 806 is stuck in the stabilizing groove 805 on the outer side of the stabilizing block 804, thereby fixing the stabilizing block 804, and then the fixing block 803 is stably fixed in the connecting frame 801, thereby improving the connection stability between the positioning column 2 and the positioning sleeve 1.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tumor radiotherapy positioning and guiding device, characterized in that: The invention comprises a positioning sleeve (1), wherein the inner cavity of the positioning sleeve (1) is provided with a positioning column (2), the inner cavity of the positioning column (2) is respectively provided with a source passage (3), an inner ring implantation needle passage (4) and an outer ring interpolation needle passage (5), an injection mechanism (6) and an exhaust mechanism (7) are respectively provided on one side of the positioning column (2), and a connecting mechanism (8) is provided on the outer side of the positioning sleeve (1), the injection mechanism (6) comprises a nuclear magnetic resonance imaging agent injection tube (601), the nuclear magnetic resonance imaging agent injection tube (601) is embedded and fixed on one side of the positioning column (2), the inner cavity of the nuclear magnetic resonance imaging agent injection tube (601) is clamped with an injection sealing plug (602), the inner cavity of the injection sealing plug (602) is fixedly connected with a first protrusion (603), the exhaust mechanism (7) comprises an exhaust pipe (701), the exhaust pipe (701) is embedded and fixed on one side of the positioning column (2), the inner cavity of the exhaust pipe (701) is clamped with an exhaust pipe (701), and the exhaust pipe (701) is clamped with an exhaust pipe (701). An airtight sealing plug (702), the inner cavity of the exhaust sealing plug (702) is fixedly connected to a second protrusion (703), the connecting mechanism (8) includes a connecting frame (801), the connecting frame (801) is fixed to the outer side of the positioning sleeve (1), one side of the positioning column (2) is fixedly connected to a fixing plate (802), one side of the fixing plate (802) is fixedly connected to a fixing block (803), the outer side of the fixing block (803) is slidably connected to the inner wall of the connecting frame (801), the inner cavity of the fixing block (803) is provided with a stabilizing block (804), the outer side of the stabilizing block (804) is provided with a stabilizing groove (805), the inner cavity of the fixing block (803) is fixedly connected to an elastic sheet (806), the outer side of the positioning column (2) is fixedly connected to a guide block (11), the inner wall of the positioning sleeve (1) is provided with a guide groove (12), and the outer side of the guide block (11) is slidably connected to the inner wall of the guide groove (12).

2. The tumor radiotherapy positioning and guiding device according to claim 1, characterized in that: The bottom of the stabilizing block (804) is fixedly connected to the limiting block (13), the inner cavity of the fixing block (803) is provided with a limiting groove (14), and the outer side of the limiting block (13) is engaged with the inner cavity of the limiting groove (14).

3. The tumor radiotherapy positioning and guiding device according to claim 1, characterized in that: The outer sides of the inner ring implantation needle channel (4) and the outer ring interpolation needle channel (5) are fixedly connected with a first connecting rod (9), one end of which is fixedly connected to the inner wall of the positioning column (2), and the outer side of the source channel (3) is fixedly connected with a second connecting rod (10), the number of which is set to four, and one end of each of the four second connecting rods (10) is fixedly connected to the inner wall of the positioning column (2).

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