Portable gamma camera capable of switching collimator

Abstract

The utility model discloses a portable gamma camera capable of switching a collimator in the technical field of portable gamma cameras, which comprises a base, the upper end of the base is fixedly connected with a connecting column, the upper end of the connecting column is fixedly connected with a gamma camera main body, the front side of the gamma camera main body is provided with a gamma camera lens column, and the front side of the gamma camera main body is provided with a camera lens. A gamma camera lens column is arranged on the base, a collimator body is arranged on the front side of the gamma camera lens column and connected with the gamma camera lens column through a butt joint device, a sliding groove is formed in the side wall of the base in a penetrating mode, a storage drawer is connected into the sliding groove in a sliding mode, and the storage drawer is connected with the base through a connecting device. A plurality of other collimator main bodies are accommodated in the accommodating drawer, and a plurality of positioning devices are arranged at the inner bottom of the accommodating drawer in a penetrating manner. The utility model has the advantages that the collimator main body is convenient to replace by an operator, the butt joint is stable, and the storage is convenient.

Description

Technical Field

[0001] This utility model relates to the field of portable gamma camera technology, specifically a portable gamma camera with a switchable collimator. Background Technology

[0002] A gamma camera is a medical device or monitoring equipment used to detect and locate radioactive materials. Also known as a scintillation camera, it uses a scintillation crystal to convert gamma rays into light signals, which are then converted into electrical signals by devices such as photomultiplier tubes, ultimately forming an image to display the distribution of radioactive nuclides. Its structure includes a collimator: allowing only rays that can pass through the collimation aperture to reach the scintillation crystal, spatially modulating the gamma rays to determine the imaging field of view and resolution; common types include pinhole, focusing, and parallel aperture types. The detector consists of a scintillation crystal, a light guide, and a photomultiplier tube. The scintillation crystal absorbs gamma rays. It generates fluorescent photons, which are efficiently transmitted to a photomultiplier tube (PMT) by a light guide. The PMT converts the optical signal into an electrical signal and amplifies it. The electronic circuitry includes a preamplifier, a position calculator, and an energy analyzer. The preamplifier amplifies the weak electrical signal output from the PMT. The position calculator determines the position of the gamma photon based on the electrical signal. The energy analyzer performs energy discrimination on the electrical signal and selects pulse signals that meet the energy requirements for processing. The information processing and display system further processes the processed electrical signal to form an image and display it on the monitor. It can also store, analyze, and process the image.

[0003] In the prior art, portable gamma cameras are generally used to monitor radioactive materials. During use, the collimator needs to be replaced according to the actual situation in order to calibrate the spatial position and angle of gamma ray irradiation. In order to facilitate the replacement by operators and not affect the use of the camera, we propose a portable gamma camera with a switchable collimator. Utility Model Content

[0004] The purpose of this invention is to provide a portable gamma camera with a switchable collimator to solve the problems existing in the prior art as described in the background.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A portable gamma camera with switchable collimators includes a base. A connecting post is fixedly connected to the upper end of the base, and a gamma camera body is fixedly connected to the upper end of the connecting post. A gamma camera lens post is disposed on the front side of the gamma camera body, and a collimator body is disposed on the front side of the gamma camera lens post. The collimator body is connected to the gamma camera lens post via a docking device. A sliding groove is provided through the side wall of the base, and a storage drawer is slidably connected in the sliding groove. The storage drawer is connected to the base via a connecting device. Multiple additional collimator bodies are stored in the storage drawer, and multiple positioning devices are provided through the inner bottom of the storage drawer.

[0007] Preferably, the docking device includes a docking ring fixedly connected to the side wall of the collimator body. A plurality of docking posts are fixedly connected to the side wall of the docking ring. A first magnetic plate is fixedly connected to the port of each of the plurality of docking posts. A docking groove is provided through the front side of the corresponding gamma camera lens post. The docking ring corresponds to the docking groove. A plurality of docking holes are provided through the inner bottom of the docking groove. A metal seat is fixedly connected to the inner bottom of each of the plurality of docking holes. The plurality of docking posts are respectively docked in each docking hole and magnetically attracted to each of the metal seats.

[0008] Preferably, the connecting device includes a second magnetic sheet fixedly connected to the side wall of the storage drawer, and a metal sheet is provided on the inner wall of the corresponding slide groove. The position of the second magnetic sheet corresponds to the position of the metal sheet. A side plate is fixedly connected to the port of the storage drawer, and the size of the side plate corresponds to the size of the base side wall.

[0009] Preferably, the positioning device includes a plurality of placement holes that penetrate the bottom of the storage drawer, and the positions of the plurality of placement holes correspond to the positions of a plurality of docking posts on each collimator body.

[0010] Preferably, anti-slip rings are fixedly connected to the side walls of each of the collimator bodies.

[0011] Preferably, the storage drawer is covered with a dustproof pad.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, by setting up a docking device, a connecting device and a positioning device to cooperate with each other, the collimator body designed on the lens column of a gamma camera can be docked by multiple docking posts and docking rings, which can stably dock the collimator body and prevent it from falling off. The replaceable collimator body can be placed stably in the storage drawer of the base. Multiple placement holes can prevent the collimator body from sliding or shifting in the storage drawer. A dustproof pad is also designed in the storage drawer to protect the collimator body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a portable gamma camera with a switchable collimator proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the collimator and camera lens column of a portable switchable collimator proposed in this utility model.

[0016] Figure 3 This is a schematic diagram showing the unfolded storage drawer of a portable switchable collimator proposed in this utility model.

[0017] In the diagram: 1. Base; 2. Connecting post; 3. Collimator body; 4. Gamma camera body; 5. Gamma camera lens post; 6. Side plate; 7. Anti-slip ring; 8. Connecting ring; 9. Connecting post; 10. First magnetic plate; 11. Connecting groove; 12. Connecting hole; 13. Dustproof pad; 14. Second magnetic plate; 15. Placement hole; 16. Storage drawer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-3 A portable gamma camera with a switchable collimator includes a base 1, a connecting post 2 fixedly connected to the upper end of the base 1, a gamma camera body 4 fixedly connected to the upper end of the connecting post 2, a gamma camera lens post 5 disposed on the front side of the gamma camera body 4, and a collimator body 3 disposed on the front side of the gamma camera lens post 5. This collimator body 3 is precision-machined to achieve high-precision X-ray collimation. The collimator body 3 is connected to the gamma camera lens post 5 via a docking device. This docking method ensures that the collimator body 3... The stable connection between the collimator body 3 and the lens column 5 of the gamma camera is achieved by a docking device including a docking ring 8 fixedly connected to the side wall of the collimator body 3. The design of the docking ring 8 allows the collimator body 3 to be easily docked with the lens column 5 of the gamma camera. Multiple docking posts 9 are fixedly connected to the side wall of the docking ring 8. These docking posts 9 are used to accurately position the collimator body 3 on the lens column 5 of the gamma camera. The ports of the multiple docking posts 9 are fixedly connected to a first magnetic sheet 10. The first magnetic sheet 10 can generate a magnetic field for magnetic connection with the metal base.

[0020] A docking groove 11 is provided through the front side of the gamma camera lens pillar 5 at the corresponding position. The shape of the docking groove 11 matches the docking ring 8 on the collimator body 3 to achieve precise docking.

[0021] The mating ring 8 corresponds to the mating groove 11. This correspondence ensures the correct installation between the collimator body 3 and the gamma camera lens pillar 5.

[0022] Multiple docking holes 12 are provided through the inner bottom of the docking groove 11. These docking holes 12 are used to accommodate the docking post 9 on the collimator body 3.

[0023] Metal seats are fixedly connected to the inner bottom of multiple docking holes 12. The metal seats and the first magnetic sheet 10 attract each other to achieve a stable connection.

[0024] Multiple docking posts 9 are respectively docked into each docking hole 12 and magnetically attracted to each metal seat. Through magnetic attraction, a tight connection is ensured between the collimator body 3 and the gamma camera lens pillar 5.

[0025] The base 1 has a sliding groove running through its side wall, which allows the storage drawer 16 to slide inside the base 1.

[0026] A storage drawer 16 is slidably connected within the slide, and the storage drawer 16 is used to store additional collimator body 3 or other accessories.

[0027] The storage drawer 16 is connected to the base 1 via a connecting device. The design of the connecting device ensures a stable connection between the storage drawer 16 and the base 1.

[0028] The connecting device includes a second magnetic sheet 14 fixedly connected to the side wall of the storage drawer 16. The position of the second magnetic sheet 14 corresponds to the position of the metal sheet and is used to generate a magnetic field attraction.

[0029] The inner wall of the corresponding slide is provided with a metal sheet, which attracts the second magnetic sheet 14 to achieve a stable connection between the storage drawer 16 and the base 1.

[0030] The position of the second magnetic piece 14 corresponds to the position of the metal piece, and this correspondence ensures the correct installation between the storage drawer 16 and the base 1.

[0031] The port of the storage drawer 16 is fixedly connected to a side plate 6. The size of the side plate 6 corresponds to the size of the side wall of the base 1 and is used to close the port of the storage drawer 16.

[0032] The size of the side panel 6 corresponds to the size of the side wall of the base 1. This design allows the storage drawer 16 to completely cover the opening when closed.

[0033] Specifically, the storage drawer 16 contains multiple additional collimator bodies 3, which can be replaced and used on the lens pillar 5 of a gamma camera as needed.

[0034] Multiple positioning devices are installed through the bottom of the storage drawer 16 to ensure that the collimator body 3 is accurately placed inside the storage drawer 16.

[0035] The positioning device includes multiple placement holes 15 that are disposed through the bottom of the storage drawer 16, and the positions of the placement holes 15 correspond to the positions of multiple docking posts 9 on each collimator body 3.

[0036] The positions of the multiple placement holes 15 correspond to the positions of the multiple docking posts 9 on each collimator body 3. This correspondence ensures the correct placement of the collimator body 3 in the storage drawer 16.

[0037] The storage drawer 16 is covered with a dustproof pad 13, which is used to prevent dust from entering the interior of the storage drawer 16 and contaminating components such as the collimator body 3.

[0038] It is worth mentioning that anti-slip rings 7 are fixedly connected to the side walls of multiple collimator bodies 3. The anti-slip rings 7 increase the friction when hand-held, making it easier for users to hold and operate the collimator bodies 3.

[0039] In this utility model, when the operator needs to replace the collimator body 3, the applied collimator body 3 can be pulled out first, so that the corresponding docking ring 8 and multiple docking posts 9 are respectively separated from the corresponding docking groove 11 and docking hole 12. Then, the storage drawer 16 can be opened through the side plate 6, the dustproof pad 13 can be unfolded, the other collimator body 3 stored in the storage drawer 16 can be taken out, and the replaced one can be put back. The docking posts 9 can be inserted into the respective placement holes 15 to prevent the collimator body 3 from slipping. After covering it with the dustproof pad 13, the storage drawer 16 can be closed. The new collimator body 3 can be re-aligned with the docking groove 11 and docking hole 12 and inserted back into the front side of the gamma camera lens column 5 to complete the docking and replacement.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable gamma camera with a switchable collimator, comprising a base (1), characterized in that, A connecting column (2) is fixedly connected to the upper end of the base (1), and a gamma camera body (4) is fixedly connected to the upper end of the connecting column (2). A gamma camera lens column (5) is provided on the front side of the gamma camera body (4), and a collimator body (3) is provided on the front side of the gamma camera lens column (5). The collimator body (3) is connected to the gamma camera lens column (5) through a docking device. A sliding groove is provided through the side wall of the base (1), and a storage drawer (16) is slidably connected in the sliding groove. The storage drawer (16) is connected to the base (1) through a connecting device. Multiple other collimator bodies (3) are stored in the storage drawer (16), and multiple positioning devices are provided through the bottom of the storage drawer (16).

2. A portable gamma camera with a switchable collimator according to claim 1, characterized in that, The docking device includes a docking ring (8) fixedly connected to the side wall of the collimator body (3). Multiple docking posts (9) are fixedly connected to the side wall of the docking ring (8). A first magnetic sheet (10) is fixedly connected to the port of each of the multiple docking posts (9). A docking groove (11) is provided through the front side of the gamma camera lens column (5) at the corresponding position. The docking ring (8) corresponds to the docking groove (11). Multiple docking holes (12) are provided through the inner bottom of the docking groove (11). A metal seat is fixedly connected to the inner bottom of each of the multiple docking holes (12). The multiple docking posts (9) are respectively docked in each docking hole (12) and magnetically attracted to each metal seat.

3. A portable gamma camera with a switchable collimator according to claim 1, characterized in that, The connecting device includes a second magnetic piece (14) fixedly connected to the side wall of the storage drawer (16), and a metal piece is provided on the inner wall of the corresponding slide. The position of the second magnetic piece (14) corresponds to the position of the metal piece. A side plate (6) is fixedly connected to the port of the storage drawer (16), and the size of the side plate (6) corresponds to the size of the side wall of the base (1).

4. A portable gamma camera with a switchable collimator according to claim 1, characterized in that, The positioning device includes multiple placement holes (15) that penetrate the bottom of the storage drawer (16), and the positions of the multiple placement holes (15) correspond to the positions of multiple docking posts (9) on each collimator body (3).

5. A portable gamma camera with a switchable collimator according to claim 1, characterized in that, Anti-slip rings (7) are fixedly connected to the side walls of multiple collimator bodies (3).

6. A portable gamma camera with a switchable collimator according to claim 1, characterized in that, The storage drawer (16) is covered with a dustproof pad (13).

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