A protective cover for a mobile CT scanner

Abstract

The present application provides a protective cover for a mobile CT scanner, which includes: a main protective cover, which includes a frame and a first protective material layer arranged at the front end opening of the frame; an automatic tracking shielding device, including a retractable shielding device nested at the front end of the main protective cover, a distance measuring sensor and a driving motor, the retractable shielding device includes a telescopic frame and a second protective material layer arranged on the telescopic frame, the first protective material layer and the second protective material layer are nested, the automatic distance measuring device is used to detect the movement of the mobile CT frame, and the driving motor is used to drive the retractable shielding device to move according to the detection result of the automatic distance measuring device so that the second protective material layer is always engaged with the mobile CT scanner. The protective cover of the present application can prevent the mobile CT scanner from leaking radiation during the scanning process, and the safety is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of radiation protection technology, and in particular to a protective cover for a mobile CT scanner. Background Art

[0002] CT scanners use X-rays to scan and image the human body. During the CT scanning process, X-rays will enter the surrounding environment through scattering and transmission. If there is no protection or improper protection against the X-rays emitted by the CT scanner during operation, it will cause ionizing radiation pollution to the surrounding environment. In order to ensure the safety of CT scanner operators, patients and the public, CT scanners need to be effectively shielded. Large fixed CT scanners are generally installed in shielded rooms. The walls of the shielded room contain a large amount of shielding and absorbing materials, which can effectively prevent X-rays from being transmitted from the scanning room.

[0003] Medical mobile CT scanners are sometimes used in emergency rooms, operating rooms, wards, ambulances, and ships. These places do not have the protection of shielded rooms, so the CT scanner itself needs to be X-ray shielded.

[0004] Please refer to Figure 1 At present, in the existing implementation scheme, a lead sleeve and a front collimator are installed at the X-ray source to absorb direct X-rays outside the imaging direction; a lead sheet or tungsten alloy plate is installed behind the detector to absorb X-rays that penetrate the detector; a lead sheet is installed on the inner wall of the scanning hole to absorb the radial part of the X-rays scattered around close to the rotation center; a lead curtain or lead glass is installed at the end of the scanning hole opposite to the entrance to absorb the scattered X-rays in the axial direction away from the entrance. In addition, lead curtains are hung on both sides of the scanner entrance to absorb some of the scattered X-rays and protect the operators standing nearby.

[0005] During the operation of mobile CT, due to the presence of the human body, the front scanning hole cannot be closed, and a large number of X-rays are scattered through the human body and leaked into the surrounding environment, resulting in a high radiation dose around the scanned object. Summary of the invention

[0006] Based on the problems existing in the prior art, the present invention provides a protective cover for a mobile CT scanner to seal the scanning hole of the mobile CT scanner during operation.

[0007] The present invention provides a mobile CT scanner protective cover, which comprises:

[0008] A main protective cover, comprising a frame and a first protective material layer disposed on a front opening of the frame;

[0009] The automatic tracking shielding device comprises a retractable shielding device nested at the front end of a main protective cover, a distance measuring sensor and a driving motor, the retractable shielding device comprises a telescopic frame and a second protective material layer arranged on the telescopic frame, the first protective material layer and the second protective material layer are nested, the automatic distance measuring device is used to detect the movement of a mobile CT frame, and the driving motor is used to drive the retractable shielding device to move according to the detection result of the automatic distance measuring device so that the second protective material layer is always engaged with the mobile CT scanner.

[0010] The moving distance range of the retractable shielding device is 10 cm to 100 cm.

[0011] Wherein, the length of the retractable shielding device ranges from 10 cm to 100 cm.

[0012] The main protective cover also includes a plurality of universal wheels arranged at the bottom of the frame.

[0013] Wherein, the frame includes a first telescopic adjustment mechanism, and the first telescopic adjustment mechanism is used to adjust the height of the main protective cover.

[0014] Wherein, the frame includes a second telescopic adjustment mechanism, and the second telescopic adjustment mechanism is used to adjust the width of the main protective cover.

[0015] Wherein, the frame includes a third telescopic adjustment mechanism, and the third telescopic adjustment mechanism is used to adjust the length of the main protective cover.

[0016] The first protective material layer includes a protective top, a protective rear portion vertically extending from the protective top, and a pair of protective side portions, and the protective rear portion is connected to the pair of protective side portions.

[0017] Wherein, at least a portion of the protective top is lead glass.

[0018] Among them, the height range of the protective cover is 60cm to 120cm, the width range is 50cm to 150cm, and the length range is 30cm to 200cm.

[0019] Compared with the prior art, the protective cover of the mobile CT scanner of the present invention is used to cover a large area of ​​the main body of the scanned object through the first protective material layer of the main protective cover. Since the position of the CT scanner may change during the scanning process, the ranging sensor of the automatic tracking shielding device detects the movement of the mobile CT frame in real time, and the driving motor drives the retractable shielding device arranged at the front end of the main protective cover to move according to the detection result to ensure that the second protective material layer nested with the first protective material layer is always engaged with the mobile CT scanner to close the scanning hole of the mobile CT scanner, thereby preventing the mobile CT scanner from leaking radiation during the scanning process, and the safety is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a rendering of an existing mobile scanner and its shielding device;

[0021] Figure 2 A three-dimensional diagram of the docking of the mobile CT scanner protective cover and the mobile CT scanner according to the preferred embodiment of the present application;

[0022] Figure 3 yes Figure 2 The structural diagram of the mobile CT scanner protective cover omits part of the first protective material layer when the mobile CT scanner is docked. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention protects a protective cover for a mobile CT scanner, including a main protective cover and an automatic tracking shielding device. The main protective cover includes a frame and a first protective material layer arranged at a front end opening on the frame. The automatic tracking shielding device includes a retractable shielding device, a distance measuring sensor and a driving motor; the retractable shielding device is nested at the front end of the main protective cover, the retractable shielding device includes a telescopic frame and a second protective material layer arranged on the telescopic frame, the first protective material layer and the second protective material layer are nested, the automatic distance measuring device is used to detect the movement of the mobile CT frame, and the driving motor is used to drive the retractable shielding device to move according to the detection result of the automatic distance measuring device so that the second protective material layer is always engaged with the mobile CT scanner.

[0025] Compared with the prior art, the protective cover of the mobile CT scanner of the present invention covers a large area of ​​the main body of the scanned object through the first protective material layer of the main protective cover. Since the position of the CT scanner may change during the scanning process, the ranging sensor of the automatic tracking shielding device detects the movement of the mobile CT frame in real time, and the driving motor drives the retractable shielding device arranged at the front end of the main protective cover to move according to the detection result to ensure that the second protective material layer nested with the first protective material layer is always engaged with the mobile CT scanner to close the scanning hole of the mobile CT scanner, thereby preventing the mobile CT scanner from leaking radiation during the scanning process, and the safety is greatly improved.

[0026] For details, please refer to Figure 1 and Figure 2 The preferred embodiment of the mobile CT scanner protective cover is shown in FIG.

[0027] The main protective cover 10 includes a frame 11, a first protective material layer 12 and a plurality of universal wheels 13. The frame 11 includes a pair of side support parts (not shown) arranged in parallel and a top support part (not shown) connecting the tops of the pair of side support frames.

[0028] The side support portion includes a pair of parallel telescopic vertical rods, a support bottom rod, a reinforcement rod and a lifting device. The structure and specifications of the pair of telescopic vertical rods are the same. Each telescopic vertical rod includes two hollow tubes nested in each other. The bottom of the pair of telescopic vertical rods is vertically connected to the support bottom rod. The reinforcement rod connects the pair of telescopic vertical rods and is parallel to the support bottom rod. The lifting device is arranged between the reinforcement rod and the top support portion. The height of the telescopic vertical rod and the distance between the reinforcement rod and the top support portion are adjusted by driving the lifting device to adjust the height of the telescopic vertical rod and the distance between the reinforcement rod and the top support portion to adjust the height of the main protective cover. The setting of the lifting device facilitates the mobile CT scanner protective cover to adapt to beds of different heights and mobile CT scanners.

[0029] The top support portion includes a pair of first parallel sides and a pair of second parallel sides, the pair of first parallel sides corresponds to the width direction of the mobile CT scanner, the pair of second parallel sides corresponds to the length direction of the mobile CT scanner, and the first parallel sides are vertically connected to the second parallel sides. The width adjustment device is connected to the pair of second parallel sides, and the length of the pair of first parallel sides is adjustable. Specifically, in this embodiment, a lead glass frame is nested in the middle position of the first parallel sides, and the width of the main protective cover is adjusted by driving the width adjustment device to adjust the length of the first parallel sides. The provision of the width adjustment device facilitates the mobile CT scanner protective cover to adapt to beds of different widths.

[0030] In other embodiments, the second parallel sides can also be set as telescopic rods that are nested with each other, and a length adjustment device connecting a pair of first parallel sides can also be set on the top support part. At this time, the lead glass frame and the lead glass nested on the lead glass frame also need to be set as a nested structure. By driving the length adjustment device to adjust the length of the second parallel sides, the length of the lead glass frame, and the covering length of the lead glass, the length of the main protective cover can be adjusted.

[0031] A plurality of universal wheels 13 are arranged at the bottom of the supporting bottom bar. Preferably, the number of the universal wheels 13 is 4, and a universal wheel 13 is respectively arranged at both ends of the bottom of each supporting bottom bar.

[0032] Consistent with the structure of the frame 11, the first protective material layer 12 includes a protective top, a protective rear portion extending vertically from the protective top, and a pair of protective side portions, forming a structure with a front end opening. Preferably, the protective rear portion is connected to the pair of protective side portions. In this embodiment, the lead glass frame is located in the middle of the protective top, and the lead glass is assembled in the lead glass frame to facilitate the doctor to observe the subject. The protective material on the outside of the lead glass in the protective top is a lead curtain. In other embodiments, the protective top can also completely cover the lead glass structure. The protective materials of the protective rear portion and the protective side portion are lead curtains.

[0033] Preferably, the protective cover has a height range of 60 cm to 120 cm, a width range of 50 cm to 150 cm, and a length range of 30 cm to 200 cm.

[0034] The automatic tracking shielding device 20 includes a retractable shielding device 21, a distance measuring sensor and a driving motor. The retractable shielding device 21 is nested at the front end of the main protective cover, and includes a telescopic frame 211 and a second protective material layer 212 arranged on the telescopic frame 211. The first protective material layer 12 and the second protective material layer 212 are nested, the automatic distance measuring device is used to detect the movement of the mobile CT frame, and the driving motor is used to drive the retractable shielding device to move according to the detection result of the automatic distance measuring device so that the second protective material layer is always engaged with the mobile CT scanner.

[0035] Specifically, in this embodiment, the telescopic frame 211 is arranged below the top supporting part of the frame 11, the protective material of the second protective material layer 212 is a lead curtain, the second protective material layer includes a top curtain and a pair of side curtains extending from the top curtain to the lower sides, and the width of the second protective material layer is less than the width of the first protective material layer.

[0036] Preferably, the automatic distance measuring device is an infrared rangefinder, a radar rangefinder or the like.

[0037] Preferably, the moving distance range of the retractable shielding device is 10 cm to 100 cm.

[0038] Preferably, the length of the retractable shielding device ranges from 10 cm to 100 cm.

[0039] When the mobile CT scanner protective cover of the present invention is applied to a ward, the use process is as follows:

[0040] (1) Adjust the position of the bed and the mobile CT so that the patient's head is in the scanning hole of the mobile CT.

[0041] (2) Insert the protective cover of the mobile CT scanner from the rear of the bed and push it to the head of the bed.

[0042] (3) Adjust the height, width and specific position of the protective cover to ensure close contact between the protective cover and the outer shell of the mobile CT frame to prevent leakage of scattered X-rays.

[0043] (4) Start scanning. When the mobile CT moves during the scanning process, the ranging sensor detects the relevant data and immediately starts the drive motor at the front end of the protective cover to allow the retractable shielding device to follow, thereby avoiding a gap between the protective cover and the mobile CT shell, which would cause the leakage of scattered X-rays.

[0044] (5) After the scan is completed, the retractable shielding device 21 is reset and the protective cover is withdrawn from the rear of the bed.

[0045] When the mobile CT scanner protective cover of the present invention is used in a vehicle, the use process is as follows:

[0046] (1) Install the protective cover of the mobile CT scanner in the ambulance in advance and adjust the position of the mobile CT in advance.

[0047] (2) Place the stretcher with the patient fixed on it into the rear end of the protective cover until it contacts the mobile CT, and insert the patient's head into the scanning hole of the mobile CT.

[0048] (3) Adjust the height, width and specific position of the protective cover to ensure close contact between the protective cover and the outer shell of the mobile CT frame to prevent leakage of scattered X-rays.

[0049] (4) Start scanning. When the mobile CT moves during the scanning process, the ranging sensor detects the relevant data and immediately starts the drive motor at the front end of the protective cover to allow the retractable shielding device to follow, thereby avoiding the formation of gaps between the protective cover and the mobile CT shell, thereby avoiding the formation of gaps between the protective cover and the mobile CT shell, resulting in the leakage of scattered X-rays.

[0050] (5) After the scan is completed, the retractable shielding device 21 is reset and the stretcher bed can be withdrawn from the rear of the protective cover.

[0051] The above-described embodiments only express one or several embodiments of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, multiple variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A mobile CT scanner protective cover, characterized in that: The mobile CT scanner protective cover comprises: A main protective cover, comprising a frame and a first protective material layer disposed on the frame at a front opening, wherein the first protective material layer comprises a protective top, a protective rear portion vertically extending from the protective top, and a pair of protective side portions, wherein the protective rear portion is connected to the pair of protective side portions; An automatic tracking shielding device includes a retractable shielding device nested at the front end of a main protective cover, a ranging sensor and a driving motor, the retractable shielding device includes a telescopic frame and a second protective material layer arranged on the telescopic frame, the first protective material layer and the second protective material layer are nested, the ranging sensor is used to detect the movement of a mobile CT scanner, the driving motor is used to drive the retractable shielding device to move according to the detection result of the ranging sensor so that the second protective material layer is always engaged with the mobile CT scanner, and the ranging sensor is an infrared rangefinder or a radar rangefinder.

2. The mobile CT scanner protective cover according to claim 1, characterized in that: The moving distance range of the retractable shielding device is 10 cm to 100 cm.

3. The mobile CT scanner protective cover according to claim 1, characterized in that: The length of the retractable shielding device ranges from 10 cm to 100 cm.

4. The mobile CT scanner protective cover according to claim 1, characterized in that: The main protective cover also includes a plurality of universal wheels arranged at the bottom of the frame.

5. The mobile CT scanner protective cover according to claim 1, characterized in that: The frame comprises a first telescopic adjustment mechanism, and the first telescopic adjustment mechanism is used to adjust the height of the main protective cover.

6. The mobile CT scanner protective cover according to claim 1, characterized in that: The frame comprises a second telescopic adjustment mechanism, and the second telescopic adjustment mechanism is used to adjust the width of the main protective cover.

7. The mobile CT scanner protective cover according to claim 1, characterized in that: The frame comprises a third telescopic adjustment mechanism, and the third telescopic adjustment mechanism is used to adjust the length of the main protective cover.

8. The mobile CT scanner protective cover according to claim 1, characterized in that: At least a portion of the protective top is lead glass.

9. The mobile CT scanner protective cover according to claim 1, characterized in that: The height of the protective cover ranges from 60 cm to 120 cm, the width ranges from 50 cm to 150 cm, and the length ranges from 30 cm to 200 cm.

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