Digital subtraction angiography equipment

Abstract

The utility model relates to digital subtraction angiography equipment which comprises a C-shaped arm, and a rotating body is arranged on the C-shaped arm. The catheter bed is connected with a supporting frame; one end of the connecting rod is rotationally connected with the supporting frame; the other end of the connecting rod is connected with the rotating body; the connecting rod enables the C-shaped arm to rotate around the catheter bed. According to the digital subtraction angiography equipment, the connecting rod is connected with the rotating body on the C-shaped arm and the supporting frame on the catheter bed, then the catheter bed and the C-shaped arm are rotationally connected, integration of the digital subtraction angiography equipment is guaranteed, meanwhile, the moving angle of the C-shaped arm is increased, and then the effect of flexible moving operation of the digital subtraction angiography equipment is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a digital subtraction angiography device. Background Art

[0002] DSA (Digital Subtraction Angiography) is a digital subtraction technique based on sequential images. It eliminates the bone and soft tissue structures by subtracting two frames of images taken of the same part of the human body, so that the blood vessels filled with contrast agents in the second frame appear in the subtraction image, enhancing the contrast. DSA is of great significance in the clinical diagnosis of vascular diseases. It is the most effective detection method for interventional diagnosis and treatment of cardiovascular and cerebrovascular diseases and is known as the "gold standard" for the diagnosis of vascular diseases.

[0003] DSA equipment is a large device, usually installed in the operating room of a hospital. The C-arm of the DSA equipment is generally fixed on the floor or ceiling of the operating room; for example, floor-standing DSA equipment, suspended DSA equipment, and bidirectional DSA equipment. However, fixed DSA equipment can only be fixed in a specific location such as an operating room, and cannot achieve the effect of flexible mobile operation.

[0004] With regard to the problem that DSA equipment in the prior art cannot be moved for operation, no effective solution has been proposed yet. Utility Model Content

[0005] Based on this, it is necessary to provide a digital subtraction angiography device that can realize flexible and mobile operation.

[0006] In order to solve the above technical problems, this application provides the following technical solutions:

[0007] A digital subtraction angiography device comprises: a C-arm, on which a rotating body is arranged; a catheter bed, which is connected to a support frame; a connecting rod, one end of which is connected to the support frame; the other end of which is rotatably connected to the rotating body; and the connecting rod enables the C-arm to rotate around the catheter bed.

[0008] In the present application, a connecting rod is provided, and both ends of the connecting rod are respectively connected to a rotating body provided on the C-arm and a support frame connected to the catheter bed; the catheter bed and the C-arm are connected as a whole from a mechanical structure; thereby facilitating the rapid movement of the catheter bed and the C-arm. At the same time, a rotating body is provided on the C-arm, and the rotating body is rotationally connected to the connecting rod. The rotating body and the connecting rod rotate, thereby driving the C-arm to rotate, and then performing a rotational scan on the subject to be examined, thereby facilitating the flexible movement of the digital subtraction angiography device.

[0009] In one embodiment, the connecting rod is retractable along its extension direction; and the connecting rod is made of carbon fiber.

[0010] It is understandable that by providing a connecting rod that is retractable along its own direction, when the connecting rod contracts, the C-arm moves closer to the catheter bed in the direction of the connecting rod contraction, which is conducive to reducing the width of the device in the long axis direction of the catheter bed, thereby reducing the volume of the digital subtraction angiography device, and facilitating flexible movement. When the connecting rod is extended, the C-arm moves away from the catheter bed to avoid collision between the C-arm and the catheter bed when the rotating body and the connecting rod are rotated. At the same time, the connecting rod is made of carbon fiber, which is conducive to reducing the weight of the DSA device while increasing the strength and hardness of the connecting rod.

[0011] In one embodiment, the C-arm includes a lifting rod and a telescopic rod; the telescopic rod is connected to the lifting rod; the C-arm has two opposite ends; the telescopic rod is arranged at both ends of the C-arm; the lifting rod includes a first lifting unit and a second lifting unit that are telescopic along its own extension direction; the two ends of the rotating body are respectively connected to the first lifting unit and the second lifting unit.

[0012] It can be understood that the C-arm includes a lifting rod, which includes a first lifting unit and a second lifting unit connected to both ends of the rotating body; by changing the telescopic degree of the first lifting unit and the second lifting unit, the height of the C-arm in the extension direction of the lifting rod is changed. At the same time, the C-arm also includes a telescopic rod, which is arranged at both ends of the C-arm. When the telescopic degree of the telescopic rod is changed, the width of the C-arm in the extension direction of the telescopic rod is changed. When the telescopic rod and the lifting rod are retracted, the width of the C-arm in the extension direction of the lifting rod and the extension direction of the telescopic rod is reduced, which is conducive to reducing the volume of the C-arm, and is conducive to reducing the volume of the digital subtraction angiography device to achieve flexible movement of the device. When the lifting rod is controlled to extend, the width of the C-arm in the extension direction of the lifting rod is reduced, so as to avoid collision between the C-arm and the catheter bed when the rotating body and the connecting rod are rotated, which is conducive to achieving flexible movement of the digital subtraction angiography device.

[0013] In one embodiment, the telescopic rod includes a first telescopic unit and a second telescopic unit that are telescopic along its own extension direction; one end of the first telescopic unit is connected to a bulb, and one end of the second telescopic unit is connected to a detector, and the positions of the bulb and the detector correspond.

[0014] It can be understood that the first telescopic unit of the telescopic rod is connected to the tube, and the second telescopic unit is connected to the detector. By setting the positions of the first telescopic unit and the second telescopic unit, the positions of the tube and the detector correspond to each other, which is conducive to clear, accurate and complete detection of the person to be detected on the catheter bed. At the same time, the tube generates X-rays, and the detector converts the X-rays that pass through the person to be detected into digital signals for computer processing.

[0015] In one embodiment, the rotating body is rotatable around the short axis direction and the long axis direction of the catheter bed.

[0016] It can be understood that the rotating body can rotate in multiple directions, driving the C-arm to rotate along the rotation direction of the rotating body, so that the C-arm can rotate around the person to be tested, which is conducive to multi-directional detection of the person to be tested, thereby improving the accuracy and efficiency of DSA equipment detection.

[0017] In one embodiment, the support frame includes a first support frame; the first support frame includes a disc rotatable along the short axis direction of the catheter bed; the disc is connected to an end of the connecting rod away from the rotating body.

[0018] It can be understood that the catheter bed is supported by a support frame, and a disc is arranged on a first support frame of the support frame, and the disc is connected to the connecting rod. The disc can rotate along the short axis direction of the catheter bed, and the C-arm connected to the connecting rod is rotated by rotating the disc, which is conducive to further increasing the detection range of the digital subtraction angiography device.

[0019] In one embodiment, the first support frame further includes a column that is retractable along its own extension direction; the column is connected to the disc; and the column is arranged at the bottom of the disc.

[0020] It is understandable that the first support frame also includes a retractable column, which is connected to the bottom of the disc; the column is set to provide support for the disc; at the same time, the column is set to a retractable structure, when the DSA device needs to be operated, the column is extended to make the catheter bed reach the required height; when the DSA device needs to be moved, the column is retracted to reduce the height of the DSA device in the vertical direction, thereby reducing the overall volume of the DSA device, which is convenient for flexible movement. By setting a retractable column along its own extension direction, combining the aforementioned telescopic rod, lifting rod and connecting rod, and retracting and extending according to actual needs, it is conducive to realizing flexible movement and operation of the equipment.

[0021] In one embodiment, the support frame further includes a second support frame; the first support frame and the second support frame are arranged in parallel; and the second support frame is retractable along its own extension direction.

[0022] It is understandable that by providing a first support frame and a second support frame parallel to the first support frame to support the catheter bed, it is beneficial to increase the stability of the catheter bed. At the same time, providing a retractable second support frame is beneficial to further reduce the volume of the digital subtraction angiography device, thereby facilitating the flexible operation of the device.

[0023] In one embodiment, a plurality of rollers are disposed at the bottom of the support frame.

[0024] It can be understood that by arranging rollers at the bottom of the support frame, the digital subtraction angiography device can be easily moved.

[0025] In one embodiment, the catheter bed is retractable along its long axis, and the catheter bed is made of carbon fiber.

[0026] It is understandable that the catheter bed is configured as a telescopic structure. When the device needs to be moved, the catheter bed is retracted to reduce the length of the DSA device in the horizontal direction, so as to facilitate the flexible movement of the device. At the same time, the catheter bed material is carbon fiber, which is conducive to reducing the weight of the device and improving the pressure resistance of the device.

[0027] Compared with the prior art, the above-mentioned digital subtraction angiography device is connected to the rotating body on the C-arm by setting a connecting rod, thereby rotatably connecting the catheter bed and the C-arm, thereby ensuring the integration of the DSA device and increasing the movement angle of the C-arm, thereby achieving the effect of mobile operation of the DSA device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of the structure of the digital subtraction angiography device provided in this application.

[0030] Figure 2 Schematic diagram of the contraction structure of the digital subtraction angiography device provided in this application.

[0031] Figure numerals: 100, digital subtraction angiography equipment; 1, C-arm; 11, rotating body; 12, lifting rod; 121, first lifting unit; 122, second lifting unit; 13, telescopic rod; 131, first telescopic unit; 132, second telescopic unit; 2, catheter bed; 3, connecting rod; 4, detector; 5, ball tube; 6, support frame; 61, first support frame; 611, disc; 612, cylinder; 62, second support frame; 63, roller. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0037] Existing digital subtraction angiography (DSA) equipment is mainly composed of an X-ray generator, a digital imaging system, a mechanical system, a computer control system, an image processing system, and an auxiliary system (high-pressure injector). It is mainly divided into the following three types according to the rack type: 1. Floor-standing DSA: The C-arm is fixed to the ground, usually located on the head side of the examination bed. 2. Suspended DSA: The rack is suspended on the ceiling rail, with a greater range of motion and flexibility. However, the suspension rail is laid on the ceiling, which usually has higher infrastructure costs and higher floor height requirements than the floor-standing model. 3. Bidirectional DSA: It consists of a set of floor-standing arms and a set of suspension arms, which can perform imaging in two planes at the same time.

[0038] The above-mentioned DSA devices are all fixedly installed on the ground or suspended from the ceiling, resulting in some limitations of existing DSA devices. First, the cost of fixed installation of DSA devices is high, and subsequent maintenance costs are also high. Secondly, due to the large size of DSA devices, they can only be fixed in specific locations in the hospital and cannot be flexibly moved to where they are needed, and can only be fixed for operation.

[0039] In view of the problems that the fixed DSA equipment in the prior art has high installation and maintenance costs and cannot be flexibly moved, a digital subtraction angiography device is provided in the present application. Specifically, the DSA equipment is connected into a whole from the mechanical structure, thereby reducing the size of the DSA equipment. At the same time, the DSA equipment has the characteristics of portability, flexibility in operation and convenient positioning, and can be applied to special scenarios such as emergency response, remote areas and mobile medical services. Furthermore, in natural disasters or other emergency situations, the mobile DSA provided in this application can be quickly deployed to the affected areas to provide patients with timely medical imaging services. In some remote or resource-limited areas, there are not enough facilities to install and maintain fixed DSAs, and mobile DSAs can meet the medical needs of these areas. For medical institutions that need to provide services in multiple locations, such as mobile clinics or military medical services, mobile DSAs can meet the needs of flexible and mobile operations and provide great convenience.

[0040] Figure 1 This is a schematic diagram of the structure of the digital subtraction angiography device provided in this application. Figure 1 The present application provides a digital subtraction angiography device 100, which includes a catheter bed 2 and a C-arm 1, and also includes a connecting rod 3, a rotating body 11 is arranged on the C-arm 1; the catheter bed 2 is connected to a support frame 6; one end of the connecting rod is rotatably connected to the support frame 6; the other end of the connecting rod 3 is connected to the rotating body; the connecting rod 3 enables the C-arm 1 to rotate around the catheter bed 2.

[0041] The digital subtraction angiography device 100 in this embodiment is based on the structure of the existing DSA device and is additionally provided with a connection structure. The connection structure is specifically as follows: Figure 1 The connecting rod 3 shown in the figure; the two ends of the connecting rod 3 are respectively connected to the support frame 6 connected to the catheter bed 2 and the rotating body 11 set on the C-arm 1. The C-arm 1 and the catheter bed 2 in the DSA device are connected by the connecting rod 3, and the C-arm 1 and the catheter bed 2 are connected as a whole from the mechanical structure, which is conducive to the portable movement of the digital subtraction angiography device 100 without fixing the DSA device in a specific position. Furthermore, the rotating body 11 is set on the C-arm 1 at a relatively horizontal position with the support frame 6 on the catheter bed 2, and is adaptively set according to the setting direction of the connecting rod 3. Reference Figure 1 , the connecting rod 3 is arranged in the horizontal direction along the Y axis, and the rotating body 11 is arranged in the horizontal position consistent with the horizontal direction of the connecting rod 3. The connecting rod 3 can rotate around the Y axis, so that the C-arm 1 can scan at the head and side of the catheter bed 2. The support frame 6 is arranged below the catheter bed 2.

[0042] like Figure 1 As shown, the support frame 6 and the catheter bed 2 are configured to be connected in an integrated contact manner. In a possible embodiment, an elastic connecting device is provided between the support frame 6 and the catheter bed 2. The connecting device is made of a high-strength, high-hardness material, and the connecting device can be compressed and stretched according to the actual use of the DSA device; that is, when the DSA device is required to operate, the height of the support frame 6 is adjusted based on the detection requirements and physiological morphology of the person to be detected, so that the catheter bed 2 is in a preset position to facilitate subsequent detection.

[0043] Furthermore, the digital subtraction angiography device 100 also includes a controller, which is not shown in the figure. When the DSA device is in working state, the controller controls the rotation of the rotating body 11 and the connecting rod 3 according to working requirements. The rotation direction of the rotating body 11 can be along the X-axis, and can also rotate in any direction according to actual detection requirements, thereby causing the C-arm 1 to rotate around the catheter bed 2 along the rotation direction of the rotating body 11 and the connecting rod 3, which is beneficial to increase the scanning and shooting range of the C-arm 1 to achieve flexible operation of the DSA device. Exemplarily, the rotating body 11 can be a sphere, and can also be any object that can rotate around the X-axis and / or Y-axis.

[0044] Furthermore, the controller and other parts of the digital subtraction angiography device 100 are electrically connected to control the operation of the DSA device.

[0045] In one embodiment, the connecting rod 3 is retractable along its own extension direction, and the connecting rod 3 is made of carbon fiber.

[0046] The connecting rod 3 is configured as a retractable structure, and the connecting rod 3 is retracted along its own extension direction. Figure 1 , the connecting rod 3 can be extended and contracted in the horizontal direction, that is, in the direction parallel to the Y axis. Further, the connecting rod 3 is made of hard material, and the retractable structure can be set to mechanical, hydraulic, pneumatic, elastic material or intelligent material; specifically, the retractable structure here adopts a mechanical structure, and the mechanical structure can be a sequential telescopic mechanism, a synchronous telescopic mechanism, an independent telescopic mechanism, a screw electric telescopic rod, etc. Among them, in the sequential telescopic mechanism, each section of the connecting rod is extended or retracted section by section in a certain order; in the synchronous telescopic mechanism, each section of the telescopic rod is extended and retracted at the same relative speed at the same time to ensure the uniformity and consistency of the entire telescopic process; in the independent telescopic mechanism, each section of the arm can be extended and retracted independently, and the length of each section can be adjusted as needed; the screw electric telescopic rod: the motor drives the screw to rotate, and the outer sleeve is pushed or retracted through the transmission of the screw nut to achieve the telescopic function. The specific structure of the connecting rod is not further limited here.

[0047] When the DSA device is operating, the telescopic structure in the connecting rod 3 is controlled to extend, thereby increasing the distance between the C-arm 1 and the catheter bed 2, providing space for the movement of the C-arm 1, and avoiding collision between the C-arm 1 and the catheter bed 2 during rotation, thereby facilitating the flexible operation of the DSA device. When the DSA device completes the operation or needs to move, the connecting rod 3 is controlled to retract, thereby reducing the distance between the C-arm 1 and the catheter bed 2, thereby reducing the overall volume of the DSA device, thereby facilitating the flexible movement of the DSA device.

[0048] Furthermore, the connecting rod 3 is configured to rotate around the Y axis so that the C-arm 1 can rotate around the subject to be tested to take pictures according to actual testing requirements. The connecting rod 3 can also be configured to rotate around the X axis, and the angle of rotation of the connecting rod 3 around the X axis is limited to a range where the connecting rod 3 and the catheter bed 2 do not contact.

[0049] In one embodiment, the C-arm 1 includes a lifting rod 12 and a telescopic rod 13; the telescopic rod 13 is connected to the lifting rod 12; the C-arm 1 has two opposite ends; the telescopic rod 13 is arranged at both ends of the C-arm 1; the lifting rod 12 includes a first lifting unit 121 and a second lifting unit 122 that can be extended along its own extension direction; the two ends of the rotating body 11 are respectively connected to the first lifting unit 121 and the second lifting unit 122.

[0050] The C-arm 1 is provided with a lifting rod 12 and a telescopic rod 13, and the lifting rod 12 includes a telescopic first lifting unit 121 and a second lifting unit 122. Figure 1 , the first lifting unit 121 and the second lifting unit 122 in the lifting structure are respectively arranged on both sides of the rotating body 11, and the first lifting unit 121 and the second lifting unit 122 rotate according to the rotation direction of the rotating body 11. When the DSA device is working, by extending the lifting rod 12 to a preset height, it is beneficial to improve the accuracy of the scanning and shooting range of the C-arm 1, so as to realize the precise operation of the DSA device. When the DSA device completes the operation or needs to be moved, the lifting rod 12 is controlled to retract, thereby reducing the height of the C-arm 1 in the space, which is beneficial to reduce the overall volume of the DSA device, and is beneficial to realize the flexible movement and placement of the DSA device. By way of example, the structural setting of the lifting rod 12 and the telescopic rod 13 is similar to the setting of the telescopic structure of the aforementioned connecting rod, and is not specifically limited here.

[0051] Furthermore, the controller can control the rotation angles of the first lifting unit 121 and the second lifting unit 122 respectively according to different scanning requirements by controlling the rotation direction of the rotating body 11. Exemplarily, the rotating body 11 is a sphere, the upper hemisphere of the sphere is connected to the upper first lifting unit 121, and the lower hemisphere of the sphere is connected to the lower second lifting unit 122.

[0052] In one embodiment, the telescopic rod 13 includes a first telescopic unit 131 and a second telescopic unit 132 that can be telescoped along its own extension direction; one end of the first telescopic unit 131 is connected to the bulb 5, and one end of the second telescopic unit 132 is connected to the detector 4, and the positions of the bulb 5 and the detector 4 correspond to each other.

[0053] The C-arm 1 is also provided with a telescopic rod 13, Figure 1The structure of the telescopic rod 13 is that the first telescopic unit 131 and the second telescopic unit 132 in the telescopic rod 13 are telescopic in a direction parallel to the Y axis. Further, the telescopic direction of the telescopic rod 13 can be set according to actual operation requirements, and can also be telescopic in a direction not parallel to the Y axis. When the DSA device is operating, by extending the telescopic rod 13 to a preset width, the scanning range of the C-arm 1 in space is wider. The preset width can be determined according to the length of the person to be tested lying flat on the catheter bed 2, so as to perform a complete detection of the area to be detected in the body of the person to be tested, which is conducive to improving the accuracy of the scanning and shooting range of the C-arm 1, so as to achieve the precise operation of the DSA device. When the DSA device completes the operation or needs to be moved, the telescopic rod 13 is controlled to shrink, thereby reducing the width of the C-arm 1 in space, which is conducive to reducing the overall volume of the DSA device, and is conducive to realizing the flexible movement and placement of the DSA device. Further, the maximum extension width of the second telescopic unit 132 is set to be less than the horizontal distance between the second lifting unit 122 and the first support frame 61 of the catheter bed 2.

[0054] At the same time, the tube 5 and the detector 4 are connected to the ends of the first telescopic unit 131 and the second telescopic unit 132 close to the catheter bed 2, and the tube 5 and the detector 4 are correspondingly arranged so that the detector 4 and the tube 5 rotate synchronously along the patient's body axis according to the rotation direction of the C-arm 1. When the DSA device is actually working, the tube 5 generates X-rays, and the detector 4 captures the X-rays generated by the tube 5, and then converts the X-rays that pass through the person to be detected into digital signals, which is convenient for the processor to reconstruct the image.

[0055] In one embodiment, in order to obtain a clear image during DSA device detection, the detector 4 needs to be perpendicular to the path of the X-rays. That is, the first telescopic unit 131 and the second telescopic unit 132 connecting the tube 5 and the detector 4 need to be correspondingly arranged so that the positions of the detector 4 and the tube 5 correspond to each other, so as to realize the technology of capturing the X-rays generated by the tube 5 through the detector 4 after the tube 5 generates the X-rays.

[0056] Furthermore, in some cases, due to the size of the person to be tested, the limitations of the operating table or other equipment, it may not be possible to set the detector 4 and the tube 5 in complete correspondence, and therefore it is necessary to adjust the rotation direction of the first lifting unit 121 and the second lifting unit 122 so that the detector 4 is perpendicular to the path of the X-ray while ensuring the safety and comfort of the patient.

[0057] Furthermore, the telescopic rod 13 and the lifting rod 12 are provided with a rotation connection, and at the same time, the different rotation angles of the first lifting unit 121 and the second lifting unit 122 in the lifting rod 12 are combined to obtain better imaging quality.

[0058] In one embodiment, the rotating body 11 is rotatable around the short axis direction and the long axis direction of the catheter bed 2 .

[0059] In one embodiment, the support frame 6 includes a first support frame 61; the first support frame 61 includes a disc 611 rotatable along the short axis direction of the catheter bed 2; the disc 611 is connected to the end of the connecting rod 3 away from the rotating body 11. The first support frame 61 also includes a column 612 that is retractable along its own extension direction; the column 612 is connected to the disc 611; the column 612 is arranged at the bottom of the disc 611. The support frame 6 also includes a second support frame 62; the first support frame 61 and the second support frame 62 are arranged in parallel; the second support frame 62 is retractable along its own extension direction. A plurality of rollers 63 are arranged at the bottom of the support frame 6.

[0060] Among them, reference Figure 1 , the catheter bed 2 is connected with a first support frame 61 and a second support frame 62 to provide stable support for the catheter bed 2. The first support frame 61 includes a disc 611 and a column 612. The disc 611 is set to rotate around the Z axis and is connected to the connecting rod 3, so that the C-arm can perform scanning and detection at the bedside position and the bedside position of the catheter bed 2, thereby increasing the range of scanning and detection. At the same time, the column 612 and the second support frame 62 of the first support frame 61 are both set as retractable structures. When the DSA device is working, the column 612 and the second support frame 62 are respectively extended to a preset height, which is convenient for subsequent scanning and detection, and realizes the flexible operation of the DSA device. When the DSA device completes the operation or needs to be moved, the column 612 and the second support frame 62 are controlled to shrink, thereby reducing the height in the space, which is conducive to reducing the overall volume of the DSA device, and is conducive to realizing the flexible movement and placement of the DSA device. Rollers 63 are respectively set at the bottom of the column 612 and the second support frame 62, which is conducive to flexible movement of the DSA device and realizes the flexible movement operation of the DSA device.

[0061] In one embodiment, the catheter bed 2 is retractable along its long axis, and the catheter bed 2 is made of carbon fiber. The column 612 of the first support frame 61 and the second support frame 62 are both configured as retractable structures, and the catheter bed 2 is configured as a retractable structure along the Y-axis direction, which can refer to the configuration of the retractable structure of the connecting rod 3, and no specific limitation is made here.

[0062] Furthermore, the catheter bed 2 is configured as a retractable structure along its long axis, and when the DSA device moves, the catheter bed 2 is retracted to reduce the volume of the catheter bed 2. At the same time, the catheter bed is made of carbon fiber material, which further reduces the weight of the DSA device and facilitates the flexible operation of the DSA device in different scenarios.

[0063] Figure 2 The schematic diagram of the contraction structure of the digital subtraction angiography device provided in this application is shown in FIG. Figure 2When the DSA device completes the operation or needs to be moved, the DSA device needs to be retracted to reduce the volume of the DSA device for easy storage or movement. The controller controls the connecting rod 3, the lifting rod 12, the telescopic rod 13, the support frame 6 and the catheter bed 2 of the digital subtraction angiography device 100 to retract, thereby reducing the volume of the C-arm 1 in the horizontal and vertical directions in space, as well as the distance between the C-arm 1 and the catheter bed 2, which is beneficial to reducing the volume of the DSA device. Furthermore, when the DSA device is retracted, the connecting rod 3, the lifting rod 12, the telescopic rod 13, the support frame 6 and the catheter bed 2 are completely retracted, that is, they are retracted along their own extension directions to the extent of occupying the minimum space, thereby reducing the occupied space of the C-arm, and reducing the distance between the catheter bed and the C-arm, which is beneficial to reducing the occupied space of the DSA device, and thus facilitating the movement of the DSA device.

[0064] In one specific embodiment, after the first person to be tested is tested, when the second person to be tested is tested, since the length of the second person to be tested lying flat on the catheter bed is shorter than the length of the first person to be tested, it is necessary to further retract the telescopic rod 13 and the catheter bed 2 itself in the extension direction so that the DSA device can adapt to the second person to be tested, which is beneficial to improving the adaptability and accuracy of the DSA device detection.

[0065] At the same time, rollers 63 are connected to the columns 612 of the first support frame 61 and the second support frame 62 on the catheter bed 2. By controlling the movement of the rollers 63 to move the catheter bed 2 and the C-arm 1 connected to the catheter bed 2, the DSA device can be flexibly moved, which is conducive to the flexible movement and operation of the DSA device.

[0066] refer to Figure 2 The rotating body 11 is set to rotate along the X-axis, the connecting rod 3 is set to rotate along the Y-axis, and the disk 611 is set to rotate along the Z-axis, thereby increasing the rotation range of the C-arm 1 and further improving the accuracy and efficiency of the DSA equipment detection.

[0067] In one embodiment, the connecting rod 3 and the catheter bed 2 appear within the scanning range of the tube 5 and the detector 4, and cannot be made of metal materials, otherwise the image data after scanning will contain metal. Therefore, the connecting rod 3 and the catheter bed 2 are made of carbon fiber, which is a new type of fiber with a carbon content of more than 90%. It has the characteristics of high hardness, high strength (7 to 10 times that of steel), light weight, high chemical resistance, etc. It is widely used in aerospace, military and other fields. Therefore, it is also sufficient to support the weight of the C-arm 1 and the detector 4 and tube 5 set on the C-arm 1 without interfering with the detection.

[0068] When it is necessary to use a digital subtraction angiography device, i.e., a DSA device, before the person to be tested is tested, the connecting rod 3, the lifting rod 12, and the telescopic rod 13 in the above-mentioned digital subtraction angiography device 100 are extended to unfold the digital subtraction angiography device 100. At the same time, the doctor will inject the contrast agent into the patient's blood vessels through a catheter. Before and after the injection of the contrast agent, the DSA device will perform two X-ray imagings through the X-ray generating device, i.e., the above-mentioned tube 5. The first imaging is in the absence of contrast agent, and the image obtained contains the bone and soft tissue information around the blood vessel. The second imaging is after the contrast agent is injected, and the image obtained clearly shows the structure of the blood vessel and the flow of the contrast agent. The DSA device converts the images obtained by the two imagings into digital signals through the above-mentioned detector 4, and stores them in the control system of the computer. Then, the image processing system of the computer will perform pixel-level subtraction processing on the two images. After subtraction processing, the DSA device will generate a clear angiography image and display it on the monitor. Doctors can use this image to observe the structure of the blood vessels, blood flow, and the condition of the lesion, and make diagnoses and treatments accordingly.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A digital subtraction angiography device (100), characterized in that: The device comprises: A C-shaped arm (1), wherein a rotating body (11) is provided on the C-shaped arm (1); A catheter bed (2), wherein the catheter bed (2) is connected to a support frame (6); A connecting rod (3), one end of which is connected to the support frame (6); the other end of which is rotatably connected to the rotating body (11); and the connecting rod (3) enables the C-arm (1) to rotate around the catheter bed (2).

2. The digital subtraction angiography device (100) according to claim 1, characterized in that: The connecting rod (3) is retractable along its own extension direction; the connecting rod (3) is made of carbon fiber material.

3. The digital subtraction angiography device (100) according to claim 1, characterized in that: The C-arm (1) comprises a lifting rod (12) and a telescopic rod (13); the telescopic rod (13) is connected to the lifting rod (12); The C-shaped arm (1) has two opposite ends; the telescopic rod (13) is arranged at the two ends of the C-shaped arm (1); the lifting rod (12) comprises a first lifting unit (121) and a second lifting unit (122) which are telescopic along their own extension direction; and the two ends of the rotating body (11) are respectively connected to the first lifting unit (121) and the second lifting unit (122).

4. The digital subtraction angiography device (100) according to claim 3, characterized in that: The telescopic rod (13) comprises a first telescopic unit (131) and a second telescopic unit (132) which are telescopic along the extension direction of the first telescopic unit (131); one end of the first telescopic unit (131) is connected to a bulb (5), and one end of the second telescopic unit (132) is connected to a detector (4); the bulb (5) and the detector (4) are located in corresponding positions.

5. The digital subtraction angiography device (100) according to claim 3, characterized in that: The rotating body (11) is rotatable around the short axis direction and the long axis direction of the catheter bed (2).

6. The digital subtraction angiography device (100) according to claim 1, characterized in that: The support frame (6) comprises a first support frame (61); the first support frame (61) comprises a disc (611) rotatable along the short axis direction of the catheter bed (2); The disc (611) is connected to an end of the connecting rod (3) away from the rotating body (11).

7. The digital subtraction angiography device (100) according to claim 6, characterized in that: The first support frame (61) further comprises a column (612) which is retractable along its own extension direction; the column (612) is connected to the disc (611); and the column (612) is arranged at the bottom of the disc (611).

8. The digital subtraction angiography device (100) according to claim 6, characterized in that: The support frame (6) further comprises a second support frame (62); the first support frame (61) and the second support frame (62) are arranged in parallel; The second support frame (62) is retractable along its own extension direction.

9. The digital subtraction angiography device (100) according to claim 1, characterized in that: A plurality of rollers (63) are arranged at the bottom of the support frame (6).

10. The digital subtraction angiography device (100) according to claim 1, characterized in that: The catheter bed (2) is retractable along its long axis direction, and the catheter bed (2) is made of carbon fiber material.

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