CT equipment and control method of CT equipment

Abstract

The present invention discloses a CT device and a control method for the CT device. The CT device comprises: a CT frame, the CT frame has a first end cover and a second end cover relative to each other, and a guide rail is arranged on the surface of the first end cover and / or the second end cover; an infusion clamp, one end of the infusion clamp is connected to the guide rail and can slide along the guide rail, and the other end of the infusion clamp is used to fix the infusion assembly. The CT device uses the CT frame as the supporting structure of the infusion frame, and a guide rail is arranged on the CT frame, so that the infusion assembly can be suspended close to the scanning cavity of the CT device, will not interfere with other equipment, and simplify the structural setting. At the same time, because the infusion clamp that fixes the infusion assembly is slidably connected to the guide rail, the infusion clamp can be moved on the guide rail to adjust the length of the infusion tube in the infusion assembly outside the guide rail, and the infusion tube will not be entangled, stacked, and tightened between the scanning bed and the CT frame, so as to meet the infusion needs of patients in different scanning scenarios.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a CT device and a control method for the CT device. Background Art

[0002] At present, there is no unified standard for the infusion stand configured when patients undergo CT (Computer Tomography) scanning, and third-party accessories are generally used. According to the placement of the infusion stand, it can be divided into bed-end integrated type, free-moving type and roof-suspended type. The bed-end integrated infusion stand is installed at the end of the scanning bed, and a long infusion catheter is required during scanning. In addition, during enhanced scanning, the high-pressure syringe is usually placed near the CT rack, which makes it impossible to fix the infusion tube on the infusion stand. The bed-end integrated infusion stand will also have the problem of interference with the CT rack, especially when the CT rack is tilted forward or backward at a certain angle, the infusion stand may hit the CT rack, so the position of the infusion stand is greatly restricted. The roof-suspended infusion stand is fixed on the ceiling of the scanning room, has a certain range of movement, is close to the rack, but the coverage range is relatively fixed. In addition, the infusion bag needs to be hung on the high infusion stand, which is very inconvenient to hang the infusion bag. At the same time, the CT rack will also involve interference with the infusion stand when it tilts forward or backward. Free-moving infusion stands are mainly third-party infusion stands, which are generally placed on one side of the scanning bed. When entering the bed for scanning, the lengthy infusion catheter may be clamped on the scanning bed or piled up in the CT scanning field of view, affecting the image quality. In addition, the added infusion stand will also affect the layout in the scanning room. The above three methods all have limitations, and are all limited by the patient's scanning position and the length of the infusion catheter. Most manufacturers use infusion stands that are integrated with the bed, and embed the infusion stand on the side and end of the bed. Relevant regulations have requirements for preventing hand pinching, and the minimum gap between the rack and the infusion stand should be greater than 25mm. Therefore, especially for head-first scanning position examinations, the infusion stand at the end of the bed will drag a long infusion tube, which is very inconvenient. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the infusion stand in the prior art is inconvenient to use, and to provide a CT device and a control method for the CT device.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] A CT device, comprising:

[0006] A CT frame, wherein the CT frame has a first end cover and a second end cover opposite to each other, and a guide rail is arranged on a surface of the first end cover and / or the second end cover;

[0007] An infusion clamp, one end of which is connected to the guide rail and can slide along the guide rail, and the other end of which is used to fix the infusion assembly.

[0008] In this solution, the infusion assembly is used to infuse the patient, and generally includes an infusion bag and at least a portion of the infusion tube. The CT device uses the CT frame as the supporting structure of the infusion stand, and a guide rail is arranged on the CT frame, so that the infusion assembly can be suspended close to the scanning cavity of the CT device, and the infusion assembly fixed on the CT frame will not interfere with other equipment, simplifying the structure. At the same time, since the infusion clamp that fixes the infusion assembly is slidably connected to the guide rail, when the scanning bed moves, the infusion clamp can be moved on the guide rail to adjust the length of the infusion tube in the infusion assembly outside the guide rail, and the infusion tube will not be entangled, stacked, and tightened between the scanning bed and the CT frame, so as to meet the infusion needs of patients in different scanning scenarios.

[0009] Preferably, the infusion assembly includes an infusion bag and an infusion tube, the upper end of the CT frame is provided with a hook, the infusion bag is hung on the hook, and the infusion tube is fixed to the infusion clamp.

[0010] In this solution, the infusion bag is hung on the hook, and the infusion tube is fixed on the infusion clamp, which can reduce the weight of the infusion clamp. When the infusion clamp moves, the infusion clamp only drives the infusion tube to move without driving the infusion bag, which can reduce the weight of the infusion clamp during transportation and facilitate the infusion clamp to slide on the guide rail.

[0011] Preferably, the guide rail is a slot opened on the CT frame, the infusion clamp includes a body, the end of the body has a flange portion, the flange portion is clamped in the slot, the body has a clamping hole, and the clamping hole is used to penetrate and fix the infusion tube.

[0012] In this solution, the card slot is embedded in the CT frame and does not protrude from the surface of the CT frame. Compared with a protruding guide rail, it occupies less space and has a more compact structure. At the same time, the card slot also facilitates the installation of the infusion clip in the card slot, which is convenient for assembly and disassembly. In other alternative solutions, the guide rail can also be set as a protruding guide rail.

[0013] Preferably, the CT device further comprises a pressure sensor, which is installed in the clamping hole and abuts against the infusion tube, and is used to monitor the pressure in the infusion tube;

[0014] And / or, the CT device further includes a flow rate sensor, which is installed in the clamping hole and abuts against the infusion tube, and is used to monitor the flow rate of the liquid in the infusion tube.

[0015] In this solution, the pressure sensor is connected to a display device that displays the pressure value, or the pressure sensor is connected to an alarm device. When the pressure value in the infusion tube exceeds the limit, the pressure sensor alarms through the display device or the alarm device to alert the doctor and the patient, which plays a warning role. In particular, when the contrast agent or other liquid medicine overflows from the blood vessel, the pressure value in the infusion tube increases, and the pressure sensor can play a warning role.

[0016] In this solution, the flow rate sensor can detect the injection flow rate of the drug solution in the infusion tube in real time, and the flow rate sensor can provide a basis for doctors to evaluate the patient's condition in real time. Especially for patients with poor heart function, real-time detection of the infusion flow rate can evaluate the patient's condition in real time.

[0017] Preferably, the CT device further comprises a control board and a stepper motor, wherein the stepper motor is axially connected to the infusion clamp, and the control board is electrically connected to the stepper motor and controls the rotation of the stepper motor to drive the infusion clamp to move along the guide rail.

[0018] In this solution, the control board can control the rotation of the stepper motor, thereby driving the infusion clamp to move in the guide rail to achieve accurate retraction and extension of the infusion tube. Since the patient's examination site can be known in advance, the patient's examination site is input into the control board in advance. When the control board controls the movement of the scanning bed, the control board also controls the rotation of the stepper motor, so that the retraction and extension of the infusion tube matches the movement of the scanning bed, and the adaptive adjustment of the infusion tube is achieved.

[0019] Preferably, the guide rail is a slot opened on the CT frame, a rack extending along the length direction of the slot is provided inside the slot, a gear is installed on the output shaft of the stepper motor, and the gear is meshed with the rack.

[0020] In this solution, the stepper motor drives the gear to roll on the rack, thereby realizing the movement of the stepper motor in the slot. Since the stepper motor shaft is connected to the infusion clamp, when the stepper motor moves, the infusion clamp is driven to move accordingly. The transmission mode of the gear and rack facilitates the forward and reverse movement of the infusion clamp.

[0021] Preferably, the guide rail is in an arc-shaped structure and its opening faces downward;

[0022] Alternatively, the guide rail is a straight structure.

[0023] In this solution, the guide rail with an arc structure is easy to match with the structure of the CT frame, and a longer guide rail can be set on the CT frame to increase the moving distance of the infusion clamp on the guide rail. The guide rail with a straight structure is easy to process and manufacture.

[0024] Preferably, the infusion clamp is rotatably connected to the guide rail.

[0025] In this solution, the above-mentioned structural setting is adopted to facilitate satisfying any adjustment direction requirements of the infusion tube by rotating the infusion clamp.

[0026] Preferably, the infusion clamp is made of elastic material;

[0027] And / or, there are multiple infusion clamps, and multiple infusion clamps are arranged on the guide rail.

[0028] In this solution, the infusion clip made of elastic material is convenient for installation and removal. A plurality of infusion clips are arranged on the guide rail to improve the fixing effect of the infusion tube.

[0029] A control method for a CT device, the control method is used for the CT device as described above, the control method comprises the steps of:

[0030] The control board controls the stepper motor to rotate to drive the infusion clamp to move along the guide rail. The movement of the infusion clamp responds to the movement of the scanning bed from outside the scanning cavity formed by the CT device into the scanning cavity or from inside the scanning cavity formed by the CT device to outside the scanning cavity.

[0031] In this solution, when the scanning bed moves from the outside toward the scanning cavity formed by the CT equipment to the laser light of the CT equipment, at this time, the infusion point of the patient on the scanning bed is a process from far to near from the lower end of the guide rail, and the infusion tube will be redundant. The control board controls the stepper motor to rotate forward to drive the infusion clamp to move upward along the guide rail, which is used to collect the redundant infusion tubes between the patient's infusion point and the CT frame onto the guide rail to prevent the infusion tubes from being entangled and messy.

[0032] When the scanning bed continues to move from the laser light toward the scanning cavity, at this time, the infusion site of the patient on the scanning bed is moving from near to far away from the lower end of the guide rail. The control panel controls the stepper motor to rotate in the opposite direction to drive the infusion clamp to move downward along the guide rail, so as to release the infusion tube to meet the distance requirement between the patient's infusion site and the CT frame, and prevent the infusion tube from being tightened or falling off, causing safety hazards.

[0033] On the contrary, when the scanning bed is moved from the scanning cavity formed by the CT device through the laser lamp and gradually to the outside, the stepper motor causes the infusion clamp to perform a procedure of first storing and then releasing.

[0034] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0035] The positive and progressive effect of the present invention is that the infusion assembly is used to infuse the patient, and usually includes an infusion bag and at least a part of the infusion tube. The CT device uses the CT frame as the supporting structure of the infusion stand, and a guide rail is arranged on the CT frame, so that the infusion assembly can be suspended close to the scanning cavity of the CT device, and the infusion assembly fixed on the CT frame will not interfere with other equipment, simplifying the structure. At the same time, because the infusion clamp that fixes the infusion assembly is slidably connected to the guide rail, when the scanning bed moves, the infusion clamp can be moved on the guide rail to adjust the length of the infusion tube in the infusion assembly outside the guide rail, and the infusion tube will not be entangled, stacked or tightened between the scanning bed and the CT frame, so as to meet the infusion needs of patients in different scanning scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The figure is a schematic structural diagram of a CT device according to a preferred embodiment of the present invention.

[0037] Figure 2 The figure is a schematic diagram of the structure of an infusion clamp according to a preferred embodiment of the present invention.

[0038] Figure 3 The figure is a schematic cross-sectional structure diagram of an infusion clamp according to a preferred embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the partial cross-sectional structure of a CT device according to a preferred embodiment of the present invention.

[0040] Figure 5 This is a front view of a CT device according to a preferred embodiment of the present invention.

[0041] Figure 6 A side view of a CT device according to a preferred embodiment of the present invention.

[0042] Figure 7 The figure is a flow chart of a control method of a CT device according to a preferred embodiment of the present invention.

[0043] Description of reference numerals:

[0044] CT gantry 1

[0045] Hook 11

[0046] Guide rail 12

[0047] Card slot 12a

[0048] Chute 13

[0049] Limiting slot 14

[0050] Rack 121

[0051] Infusion clamp 2

[0052] Ontology 21

[0053] Flanging 22

[0054] Clamping hole 23

[0055] Stepper Motor 3

[0056] Gear 31

[0057] Pressure sensor 4

[0058] Flow rate sensor 5

[0059] Infusion tube 10

[0060] Scanning bed 20 DETAILED DESCRIPTION

[0061] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0062] like Figure 1-Figure 6 As shown, this embodiment discloses a CT device, which includes a CT frame 1 and an infusion clamp 2. The CT frame 1 has a first end cover and a second end cover that are arranged opposite to each other, and a guide rail 12 is arranged on the surface of the first end cover and / or the second end cover. One end of the infusion clamp 2 is connected to the guide rail 12 and can slide along the guide rail 12, and the other end of the infusion clamp 2 is used to fix the infusion assembly. The infusion assembly is used to infuse the patient, and usually includes an infusion bag and at least a portion of the infusion tube 10. The CT device uses the CT frame 1 as the supporting structure of the infusion frame, and a guide rail 12 is arranged on the CT frame 1, so that the infusion assembly can be suspended close to the scanning cavity of the CT device, and the infusion assembly fixed on the CT frame 1 will not interfere with other equipment, simplifying the structure. At the same time, since the infusion clamp 2 that fixes the infusion assembly is slidably connected to the guide rail 12, when the scanning bed 20 moves, the infusion clamp 2 can move on the guide rail 12 to adjust the length of the infusion tube 10 in the infusion assembly outside the guide rail 12, and the infusion tube 10 will not be entangled, stacked or tightened between the scanning bed 20 and the CT frame 1, so as to meet the infusion needs of patients in different scanning scenarios.

[0063] Specifically, Figure 1 and Figure 3 As shown, the infusion assembly includes an infusion bag (not shown in the figure) and an infusion tube 10. A hook 11 is provided at the upper end of the CT frame 1, the infusion bag is hung on the hook 11, and the infusion tube 10 is fixed to the infusion clamp 2. The infusion bag is hung on the hook 11, and the infusion tube 10 is fixed to the infusion clamp 2, which can reduce the weight carried by the infusion clamp 2. When the infusion clamp 2 moves, the infusion clamp 2 only drives the infusion tube 10 to move, without driving the infusion bag, which can reduce the weight of the infusion clamp 2 when transported, and facilitates the infusion clamp 2 to slide on the guide rail 12.

[0064] like Figure 1 As shown, the guide rail 12 is in an arc-shaped structure with an opening facing downward, and the guide rail 12 in an arc-shaped structure is easy to match with the structure of the CT gantry 1, and a longer guide rail 12 can be set on the CT gantry 1 to increase the moving distance of the infusion clamp 2 on the guide rail 12. Of course, in other alternative embodiments, in order to facilitate the processing and manufacturing of the guide rail, the guide rail can also be set as a straight structure.

[0065] Preferably, a hook 11, a guide rail 12 and an infusion clip 2 installed on the guide rail 12 are provided on the first end cover and the second end cover arranged opposite to each other at the upper end of the CT frame 1, so that the doctor or the patient can hang the infusion bag and the infusion tube 10 close to the patient according to different scanning scenarios.

[0066] In this embodiment, if Figure 1 and Figure 4 As shown, the guide rail 12 is a slot 12a provided on the CT frame 1, and two flanges are provided on the outside of the slot 12a, and the two flanges are used to fix the infusion clamp 2. The slot 12a is embedded in the CT frame 1 and does not protrude from the surface of the CT frame 1. Compared with the protruding guide rail 12, it occupies less space and has a more compact structure. At the same time, the slot 12a also facilitates the installation of the infusion clamp 2 in the slot 12a, and is easy to disassemble and assemble. Of course, in other embodiments, the guide rail can also be set as a protruding track or a mechanical structure with a guiding function. Figure 2 and Figure 3 As shown, the infusion clamp 2 includes a body 21, and the end of the body 21 has a flange portion 22, and the flange portion 22 is clamped in the clamping groove 12a. The body 21 has a clamping hole 23, and the clamping hole 23 is used to pass and fix the infusion tube 10. In this embodiment, the clamping hole 23 is extended along the axial direction of the body 21, so that a part of the infusion tube 10 can be accommodated in the clamping groove 12a, so that the infusion tube 10 is arranged regularly. The clamping hole 23 can also be extended along the radial direction of the body 21. Of course, in other embodiments, the setting direction of the clamping hole is not limited, and it can be extended in any direction.

[0067] In order to facilitate adjustment of the direction of the infusion tube 10 , one end of the infusion clamp 2 close to the guide rail 12 can be rotatably connected to the guide rail 12 , so that the infusion clamp 2 can be rotated to meet any adjustment direction requirements of the infusion tube.

[0068] In order to facilitate installation, disassembly and rotation of the infusion clamp 2 , the infusion clamp 2 is made of an elastic material, which is also convenient for passing the infusion tube 10 .

[0069] In order to improve the fixing effect, there are multiple infusion clamps 2 , and the multiple infusion clamps 2 are arranged on the guide rail 12 .

[0070] On this basis, if Figure 4As shown, the CT device also includes a control board (not shown in the figure) and a stepper motor 3. The stepper motor 3 is axially connected to the infusion clamp 2. The control board is electrically connected to the stepper motor 3 and controls the stepper motor 3 to rotate, so as to drive the infusion clamp 2 to move along the guide rail 12. The control board can control the stepper motor 3 to rotate, thereby driving the infusion clamp 2 to move in the track, so as to achieve accurate retraction and extension of the infusion tube 10. Since the patient's examination site can be known in advance, the patient's examination site is input into the control board in advance. When the control board controls the movement of the scanning bed 20, the control board also controls the stepper motor 3 to rotate, so that the retraction and extension of the infusion tube 10 matches the movement of the scanning bed 20, so as to achieve adaptive adjustment of the infusion tube 10. In this embodiment, the stepper motor 3 is axially connected to the lowest infusion clamp 2. When the stepper motor 3 drives the lowest infusion clamp 2 to move, other infusion clamps 2 will also be pushed or pulled through the infusion tube 10.

[0071] Specifically, Figure 4 As shown, a rack 121 extending along the length direction of the slot 12a is provided on the inner side of the slot 12a, and a gear 31 is installed on the output shaft of the stepper motor 3, and the gear 31 is meshed with the rack 121. When the stepper motor 3 rotates, the gear 31 is driven to roll on the rack 121, thereby realizing the movement of the stepper motor 3 in the slot 12a. Since the stepper motor 3 is axially connected to the infusion clamp 2, when the stepper motor 3 moves, the infusion clamp 2 is driven to move accordingly. Since the infusion tube 10 is fixed on the infusion clamp 2, the infusion clamp 2 moves to realize the retraction and release of the infusion tube 10. The transmission mode of the gear 31 and the rack 121 facilitates the forward and reverse movement of the infusion clamp 2. A slide groove 13 is provided on the side of the slot 12a close to the stepper motor 3, and the output shaft of the stepper motor 3 is penetrated through the slide groove 13 and can slide in the slide groove 13. The slide groove 13 can limit the output shaft of the stepper motor 3. At the same time, a limiting groove 14 is also provided on the side opposite to the slot 12a and the rack 121, and the edge of the gear 31 is clamped in the limiting groove 14 to ensure smooth rotation of the gear and prevent the gear 31 from being skewed and stuck. The stepper motor 3 is installed and positioned through the slide groove 13 and the limiting groove 14 on the peripheral side of the output shaft to ensure that the gear 31 is meshed with the rack 121 and rolls on the rack 121. The slide groove 13 is formed by two limiting members, and the two limiting members are detachably connected to the CT frame 1 to facilitate the installation of the stepper motor 3 and the output shaft of the stepper motor 3. The limiting groove 14 is surrounded by two other limiting members, and the other two limiting members are detachably connected to the CT frame 1 to facilitate the installation of the gear 31.

[0072] like Figure 3As shown, the CT device also includes a pressure sensor 4, which is installed in the clamping hole 23 and abuts against the infusion tube 10, and is used to monitor the pressure in the infusion tube 10. The pressure sensor 4 can be connected to a display device that displays the pressure value, or an alarm device is connected to the pressure sensor 4. When the pressure value in the infusion tube 10 exceeds the limit, the pressure sensor 4 displays a number on the display device or the alarm device alarms to prompt doctors and patients, which plays a warning role. In particular, when the injection of contrast agent or other liquid medicine overflows from the blood vessel, the pressure value in the infusion tube 10 increases, and the pressure sensor 4 can play a warning role.

[0073] like Figure 3 As shown, the CT device also includes a flow rate sensor 5, which is installed in the clamping hole 23 and abuts against the infusion tube 10, and is used to monitor the liquid flow rate in the infusion tube 10. The flow rate sensor 5 can detect the injection flow rate of the liquid in the infusion tube 10 in real time, and the flow rate sensor 5 can provide a basis for doctors to evaluate the patient's condition in real time. Especially for patients with poor heart function, real-time detection of the infusion flow rate can evaluate the patient's condition in real time. In this embodiment, the flow rate sensor 5 adopts an ultrasonic sensor. The principle of the ultrasonic sensor is based on the Doppler method, which uses the reflection of the medium to the sound wave to change its frequency, and then generates a frequency difference when the sound source and the medium receiving the sound wave move relative to each other. Of course, in other embodiments, the flow rate sensor can also adopt other sensors that monitor the liquid flow rate. Figure 3 In the figure, only a portion of the infusion tube 10 located inside the infusion clamp 2 is shown.

[0074] Of course, in other alternative embodiments, any one of the pressure sensor and the flow rate sensor may be provided.

[0075] In other embodiments, the pressure sensor and the flow rate sensor may be electrically connected to the control board, and the control board is used to receive the detection values ​​of the pressure sensor and the flow rate sensor. When the detection values ​​of the pressure sensor and / or the flow rate sensor exceed the preset value, the control board controls the alarm to sound an alarm, which plays a role of early warning.

[0076] like Figure 7 As shown, a control method of a CT device is used for the CT device as described above, and the control method comprises step S1:

[0077] The control board controls the stepper motor 3 to rotate to drive the infusion clamp 2 to move along the guide rail 12. The movement of the infusion clamp 2 responds to the movement of the scanning bed 20 from outside the scanning cavity formed by the CT device into the scanning cavity or from inside the scanning cavity formed by the CT device to outside the scanning cavity.

[0078] In this embodiment, when the scanning bed 20 moves from the outside toward the scanning cavity formed by the CT device to the laser light of the CT device, at this time, the distance between the infusion site of the patient on the scanning bed 20 and the lower end of the guide rail 12 is from far to near, and the infusion tube 10 will be redundant. The control board controls the stepper motor 3 to rotate forward to drive the infusion clamp 2 to move upward along the guide rail 12, so as to store the redundant infusion tube 10 between the infusion site of the patient and the CT rack 1 on the guide rail 12 to prevent the infusion tube 10 from being entangled and messy. When the scanning bed 20 continues to move from the laser light to the scanning cavity, at this time, the distance between the infusion site of the patient on the scanning bed 20 and the lower end of the guide rail 12 is from near to far, and the control board controls the stepper motor 3 to rotate in the opposite direction to drive the infusion clamp 2 to move downward along the guide rail 12 to release the infusion tube 10 to meet the distance requirement between the infusion site of the patient and the CT rack 1, so as to prevent the infusion tube 10 from being tightened or falling off, causing safety hazards.

[0079] On the contrary, when the scanning bed 20 moves from the scanning cavity formed by the CT device through the laser lamp and gradually to the outside, the stepping motor 3 causes the infusion clamp 2 to perform the procedure of first storing and then releasing.

[0080] In this embodiment, the control panel can also calculate the relationship between the distance of the scanning bed 20 and the rotation angle. For example, when the scanning bed enters the aperture of the CT device, the required length of the infusion tube 10 is reduced, and the infusion clamp 2 can rise in the arc track to increase the distance between the patient and the infusion clamp 2. Figure 5 and Figure 6 As shown in FIG. 1 , the relationship between the bed approach distance and the motor rotation angle is calculated as follows: the injection site of the patient's infusion needle, the aperture center of the CT gantry 1 and the infusion clamp 2 form a spatial triangle. The bed approach distance difference is calculated according to formula (1):

[0081]

[0082] Among them, Δl is the distance into the bed, R is the radius of the arc track, L1 is the length of the starting position, and L2 is the length after entering the bed. H1 is the height of the starting position, and H2 is the height after entering the bed. The difference between H2 and H1 is approximately equal to the distance into the bed Δl.

[0083] According to formula (2), the rotation angle of the infusion clamp 2 moving on the track relative to the aperture center of the CT gantry 1 can be calculated.

[0084] θ2=Arcsin(|(sin(θ1)R-Δl)| / R) (2)

[0085] Among them, Δl is the bed entry distance, R is the arc track radius, θ1 is the angle of the starting position, and θ2 is the angle after bed entry. After the control board calculates the bed entry distance and the rotation angle, it drives the stepper motor 3 to rotate the number of revolutions equivalent to the bed entry distance and the rotation angle, and then dynamically adjusts the position of the infusion clamp 2 to achieve adaptive adjustment of the infusion tube 10.

[0086] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A CT device, characterized in that: The CT device comprises: A CT gantry (1), the CT gantry (1) comprising a first end cover and a second end cover opposite to each other, a guide rail (12) being arranged on a surface of the first end cover and / or the second end cover; an infusion clamp (2), one end of the infusion clamp (2) being connected to the guide rail (12) and being capable of sliding along the guide rail (12), and the other end of the infusion clamp (2) being used for fixing the infusion assembly; A control panel, wherein the control panel is capable of calculating the relationship between the distance of the scanning bed (20) entering the bed and the rotation angle, and adjusting the position of the infusion clamp (2) according to the calculated rotation angle.

2. The CT device according to claim 1, characterized in that: The infusion assembly comprises an infusion bag and an infusion tube (10); a hook (11) is provided at the upper end of the CT frame (1); the infusion bag is hung on the hook (11); and the infusion tube (10) is fixed to the infusion clamp (2).

3. The CT device according to claim 2, characterized in that: The guide rail (12) is a slot (12a) provided on the CT frame (1); the infusion clamp (2) comprises a body (21); an end of the body (21) has a flange portion (22); the flange portion (22) is clamped in the slot (12a); the body (21) has a clamping hole (23); the clamping hole (23) is used to pass through and fix the infusion tube (10).

4. The CT device according to claim 3, characterized in that: The CT device further comprises a pressure sensor (4), wherein the pressure sensor (4) is installed in the clamping hole (23) and abuts against the infusion tube (10), and is used to monitor the pressure in the infusion tube (10); And / or, the CT device further comprises a flow rate sensor (5), wherein the flow rate sensor (5) is installed in the clamping hole (23) and abuts against the infusion tube (10), and is used to monitor the flow rate of the liquid in the infusion tube (10).

5. The CT device according to claim 1, characterized in that: The CT device further comprises a stepper motor (3), the stepper motor (3) being axially connected to the infusion clamp (2), and the control board being electrically connected to the stepper motor (3) and controlling the rotation of the stepper motor (3) to drive the infusion clamp (2) to move along the guide rail (12).

6. The CT device according to claim 5, characterized in that: The guide rail (12) is a slot (12a) provided on the CT frame (1); a rack (121) extending along the length direction of the slot (12a) is provided inside the slot (12a); a gear (31) is installed on the output shaft of the stepping motor (3); and the gear (31) is meshed with the rack (121).

7. The CT device according to claim 1, characterized in that: The guide rail (12) is in an arc-shaped structure and its opening faces downward; Alternatively, the guide rail (12) is a straight structure.

8. The CT device according to claim 1, characterized in that: The infusion clamp (2) is rotatably connected to the guide rail (12).

9. The CT device according to any one of claims 1 to 8, characterized in that: The infusion clamp (2) is made of an elastic material; And / or, there are multiple infusion clamps (2), and multiple infusion clamps (2) are arranged on the guide rail (12).

10. A control method for a CT device, characterized in that: The control method is used for the CT device according to any one of claims 1 to 9, and the control method comprises the steps of: The control board controls the stepper motor (3) to rotate so as to drive the infusion clamp (2) to move along the guide rail (12), and the movement of the infusion clamp (2) responds to the movement of the scanning bed from outside the scanning cavity formed by the CT device into the scanning cavity or from inside the scanning cavity formed by the CT device to outside the scanning cavity.

Images