Stent and medical equipment

Abstract

The support comprises a first rotating joint (10), a supporting arm (20) and a second rotating joint (30). The first rotating joint comprises a first joint body (11) and a second joint body (12) which are rotationally connected. A first joint channel (15) is arranged in the first rotating joint. One end of the supporting arm is rotatably connected with the second joint body. An arm channel (25) is arranged in the supporting arm. The second rotating joint comprises a third joint body (31) and a fourth joint body (32) which are rotationally connected. The third joint body is rotatably connected with the other end of the supporting arm. And a second joint channel (35) is formed in the second rotating joint. The first joint channel, the arm channel and the second joint channel are sequentially communicated end to end to form a communication channel. The bracket is favorable for improving the safety performance. In addition, the utility model further provides medical equipment comprising the stent.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a bracket and medical equipment comprising the bracket. Background Art

[0002] Mobile C-arm X-ray imaging devices are often equipped with a display for monitoring test results. The display is connected to the device body through a bracket. The position and angle of the display can be changed by adjusting the bracket. The cable connecting the display is arranged outside the bracket. The exposed cable is prone to friction with other components, posing a safety hazard. Utility Model Content

[0003] The utility model aims to provide a bracket, which is beneficial to reducing the friction between the transmission pipeline and other components.

[0004] Another object of the present invention is to provide a medical device, which is helpful to reduce the friction between the transmission pipeline and other components.

[0005] The utility model provides a bracket, which includes a first rotating joint, a supporting arm and a second rotating joint. The first rotating joint includes a first joint body and a second joint body that are rotatably connected. The first joint body is used to connect an object to be supported. The first rotating joint has a first joint channel that runs through the first joint body and the second joint body. One end of the supporting arm is rotatably connected to the second joint body. The supporting arm has an arm channel that runs through both ends thereof. The second rotating joint includes a third joint body and a fourth joint body that are rotatably connected. The third joint body is rotatably connected to the other end of the supporting arm. The second rotating joint has a second joint channel that runs through the third joint body and the fourth joint body. The first joint channel, the arm channel and the second joint channel are connected end to end in sequence to form a connecting channel.

[0006] When the bracket is in use, the position and angle of the object to be supported can be changed by adjusting the relative rotation positions of the rotational connections. A connecting channel is provided inside the bracket, which can hide the transmission pipeline inside, making it difficult for the transmission pipeline to rub against other components, thereby improving safety performance.

[0007] In another schematic embodiment of the bracket, the bracket also includes a connecting assembly. The connecting assembly includes a connecting plate and a rotating support. The connecting plate is used to connect the object to be supported and has an opening that runs through it along its thickness direction. The rotating support is connected to the connecting plate. The first joint body is rotatably connected to the rotating support around an axis perpendicular to the thickness direction. The channel opening of the first joint channel opened in the first joint body is opposite to the opening. The adjustment dimension can be increased by the connecting assembly, and the connecting plate is conducive to improving the stability of the connection with the object to be supported, especially when the object to be supported is also roughly plate-shaped (such as a display).

[0008] In another schematic embodiment of the bracket, the rotation axis of the second joint body relative to the support arm and the rotation axis of the third joint body relative to the support arm are both parallel to the first direction. The bracket also includes a positioning arm and a positioning member. The positioning arm is arranged in the arm channel. The two ends of the positioning arm are rotatably connected to the second joint body and the third joint body, respectively, and the rotation axes are both parallel to the first direction. The support arm, the positioning arm, the second joint body and the third joint body constitute a parallelogram structure. The positioning member is arranged in the arm channel and connects the support arm and the positioning arm. The positioning member can switch between a locking state that fixes the relative position of the support arm and the positioning arm and a release state that allows the support arm and the positioning arm to move relative to each other. Thereby, during the deformation of the parallelogram structure, the relative angle between the second joint body and the third joint body can be kept unchanged, and only the relative position of the two is changed, thereby facilitating operation.

[0009] In another exemplary embodiment of the bracket, the positioning member is a lockable gas spring. One of the piston rod and the cylinder of the lockable gas spring is rotatably connected to the support arm, and the other is rotatably connected to the positioning arm, and the rotation axis is parallel to the first direction. The relative position of the first rotation joint and the second rotation joint can be conveniently adjusted by the lockable gas spring.

[0010] In another schematic embodiment of the bracket, the bracket also includes a connecting member and an adjusting shaft. The connecting member is rotatably connected to the support arm around an axis parallel to the first direction. The end of the piston rod of the lockable gas spring is inserted into and fixed to the connecting member. The adjusting shaft is rotatably inserted into the connecting member, and the rotation axis coincides with the rotation axis of the connecting member relative to the support arm. A groove is concavely provided on the circumferential surface of the adjusting shaft. The valve core of the lockable gas spring is inserted into the groove. The shape of the groove is configured so that the rotating adjusting shaft can push the valve core through the groove wall of the groove, thereby switching the lockable gas spring from one of the locked state and the released state to another state. This structure can facilitate switching the state of the lockable gas spring.

[0011] In another exemplary embodiment of the support, the positioning arm includes two side plates and a spacer. The two side plates are perpendicular to the first direction and are spaced apart along the first direction. The spacer is parallel to the first direction and connects the two side plates to form a wiring groove extending along the length direction of the support arm with the two side plates. The positioning member is arranged on a side of the spacer that is away from the wiring groove. In this way, the transmission pipeline can be isolated from the positioning member, which is beneficial to protecting the transmission pipeline.

[0012] In another exemplary embodiment of the bracket, the ends of the first joint body and the second joint body that are rotatably connected to each other are both tubular and mutually sleeved, and / or the ends of the third joint body and the fourth joint body that are rotatably connected to each other are both tubular and mutually sleeved. In this way, a channel is formed in the center of the mutually sleeved parts to facilitate the transmission pipeline to pass through.

[0013] In another exemplary embodiment of the bracket, the bracket is provided with an operation port at the first rotating joint, the support arm and / or the second rotating joint. The operation port is connected to the communication channel. The bracket further includes a cover body. The cover body is detachably covered on the operation port. When the installer inserts the transmission pipeline into the communication channel, for example, he can extend his hand or a tool through the operation port to guide the direction of the transmission pipeline, thereby facilitating the smooth passage of the transmission pipeline.

[0014] In another schematic embodiment of the bracket, the bracket further includes a first covering member and / or a second covering member. The first covering member is rotatably connected to the second joint body, and the axis of rotation coincides with the axis of rotation of the second joint body relative to the support arm. The first covering member can cover the gap leading to the connecting channel between the second joint body and the support arm during the rotation of the second joint body relative to the support arm. The second covering member is rotatably connected to the third joint body, and the axis of rotation coincides with the axis of rotation of the third joint body relative to the support arm. The second covering member can cover the gap leading to the connecting channel between the third joint body and the support arm during the rotation of the third joint body relative to the support arm. This can prevent foreign matter from entering the gap and affecting the normal operation of the bracket.

[0015] The utility model also provides a medical device, which includes the above-mentioned bracket. The first joint body is connected to the object to be supported of the medical device. When in use, the bracket can change the position and angle of the object to be supported by adjusting the relative rotation position of each rotating connection. A connecting channel is provided in the bracket, which can hide the transmission pipeline inside, so that the transmission pipeline is not easy to rub against other components, thereby improving safety performance.

[0016] In another exemplary embodiment of the medical device, the medical device is a C-arm X-ray imaging device, and the object to be supported is a display. The fourth joint body is connected to a base of the C-arm X-ray imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only used to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0018] Figure 1 A schematic structural diagram of a schematic implementation of a bracket.

[0019] Figure 2 For illustration Figure 1 Schematic usage scenario of the bracket shown.

[0020] Figure 3 for Figure 1 A partial cross-sectional view of the bracket is shown.

[0021] Figure 4 for Figure 3 A partial enlarged view of .

[0022] Figure 5 For display of positioning arms and positioning elements.

[0023] Figure 6 for Figure 3 Another partial enlargement of .

[0024] Figure 7 For illustration Figure 1 The distribution of the operating opening and cover of the bracket is shown.

[0025] Description of symbols

[0026] 10 First revolute joint

[0027] 11 First joint

[0028] 12 Second joint

[0029] 15 First joint channel

[0030] 20 Support arm

[0031] 25 Arm channel

[0032] 30 Second revolute joint

[0033] 31 Third joint

[0034] 32 Fourth joint

[0035] 35 Second joint channel

[0036] 40 connection components

[0037] 41 Connecting plate

[0038] 411 Opening

[0039] 42 Rotating support

[0040] 50 Positioning arm

[0041] 51 side panel

[0042] 52 partition board

[0043] 53 wiring trough

[0044] 60 positioning parts

[0045] 61 piston rod

[0046] 62 cylinder barrel

[0047] 63 valve core

[0048] 71 Connectors

[0049] 72 Adjustment shaft

[0050] 721 groove

[0051] 73 handle

[0052] 81 first covering member

[0053] 82 second covering member

[0054] 91 Damping Ring

[0055] 92Fixed parts

[0056] 93 bearings

[0057] 94 Adjustment screw

[0058] C cover

[0059] P operation port

[0060] 100 brackets

[0061] 200 objects to be supported

[0062] 300 base

[0063] 400 transmission pipeline

[0064] D1 first direction

[0065] D2 Second direction

[0066] H Thickness direction of connecting plate

[0067] L The length of the support arm DETAILED DESCRIPTION

[0068] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0069] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0070] In this article, "first", "second", etc. do not indicate their importance or order, but are only used to indicate the difference between each other for the convenience of document description.

[0071] In order to make the drawings concise, each figure only schematically shows the parts related to the utility model, which do not represent the actual structure of the product.

[0072] Figure 1 The structure diagram of a schematic embodiment of a bracket. The bracket is used as a part of a medical device, for example, to support an object to be supported by the medical device, and the medical device is, for example, a C-arm X-ray imaging device, for example, a mobile C-arm X-ray imaging device or a DSA angiography machine (DSA), but not limited thereto. The object to be supported by the medical device is, for example, a display, and the display is used to display the test results, but not limited thereto. Figure 2 For illustration Figure 1 The bracket shown is used in a mobile C-arm X-ray imaging device. Figure 2 As shown, the object 200 to be supported is finally connected to the base 300 through the bracket 100 and other structures.

[0073] Figure 3 for Figure 1 A partial cross-sectional view of the bracket shown. Figure 1 and Figure 3 As shown, the bracket 100 includes a first rotation joint 10 , a support arm 20 and a second rotation joint 30 .

[0074] The first rotary joint 10 includes a first joint body 11 and a second joint body 12 that are rotatably connected, and the rotation axis is the axis L1. The first joint body 11 is used to connect the object to be supported. Figure 3 As shown, the first rotary joint 10 has a first joint channel 15 inside that passes through the first joint body 11 and the second joint body 12 .

[0075] One end of the support arm 20 (i.e. Figure 1 and Figure 3 The left end of the second joint body 12 is rotatably connected to the second joint body 12, and the rotation axis is L2. Figure 3 As shown, the support arm 20 has an arm channel 25 passing through both ends thereof.

[0076] The second rotation joint 30 includes a third joint body 31 and a fourth joint body 32 which are rotatably connected, and the rotation axis is the axis L4. The third joint body 31 is rotatably connected to the other end (i.e. Figure 1 and Figure 3 The right end of the center of the axis L3 is the axis of rotation. Figure 3As shown, the second revolving joint 30 has a second joint channel 35 that passes through the third joint body 31 and the fourth joint body 32. The first joint channel 15, the arm channel 25 and the second joint channel 35 are connected end to end in sequence to form a connecting channel for accommodating a transmission pipeline 400 (a transmission pipeline 400 is used as an example in the figure for illustration), and one end of the transmission pipeline 400 is used to connect the object to be supported. The transmission pipeline 400 is, for example, a cable, a pipeline, a hose, etc.

[0077] When the bracket is in use, the position and angle of the object to be supported can be changed by adjusting the relative rotation positions of the rotational connections. A connecting channel is provided inside the bracket, which can hide the transmission pipeline inside, making it difficult for the transmission pipeline to rub against other components, thereby improving safety performance.

[0078] like Figure 1 and Figure 3 As shown, in the schematic embodiment, the bracket 100 also includes a connecting component 40. The first joint body 11 is connected to the object to be supported through the connecting component 40. The connecting component 40 includes a connecting plate 41 and two rotating supports 42. The connecting plate 41 is used to connect the object to be supported and has an opening 411 that passes through it along its thickness direction H. The rotating support 42 connects the connecting plate 41. The connecting plate 41 and the rotating support 42 are, for example, formed by cutting and bending a piece of plate, which is convenient for processing, but is not limited to this. The first joint body 11 is rotatably connected to the rotating support 42 around an axis L5 perpendicular to the thickness direction H. The channel opening of the first joint channel 15 opened in the first joint body 11 is opposite to the opening 411. The transmission pipeline 400, for example, first passes through the opening 411, and then enters the first rotating joint 10 from the channel opening of the first joint channel 15 opened in the first joint body 11. The connection assembly 40 can increase the adjustment dimension, and the connection plate 41 is conducive to improving the stability of the connection with the object to be supported, especially when the object to be supported is also roughly plate-shaped (such as a display).

[0079] like Figure 3 As shown, in the exemplary embodiment, the rotation axis of the second joint body 12 relative to the support arm 20 and the rotation axis of the third joint body 31 relative to the support arm 20 are both parallel to the first direction D1. The bracket 100 also includes a positioning arm 50 and a positioning member 60. The positioning arm 50 and the positioning member 60 are both disposed in the arm channel 25. The two ends of the positioning arm 50 are rotatably connected to the second joint body 12 and the third joint body 31, respectively, and the rotation axes are both parallel to the first direction D1. Figure 3As shown, the rotation axis of the positioning arm 50 relative to the second joint body 12 is the axis L6, and the rotation axis of the positioning arm 50 relative to the third joint body 31 is the axis L7. The support arm 20, the positioning arm 50, the second joint body 12 and the third joint body 31 form a parallelogram structure. In this way, during the deformation of the parallelogram structure, the relative angle between the second joint body 12 and the third joint body 31 can be kept unchanged, and only the relative position of the two can be changed, thereby facilitating operation.

[0080] The positioning member 60 connects the support arm 20 and the positioning arm 50. The positioning member 60 can switch between a locking state that fixes the relative position of the support arm 20 and the positioning arm 50 and a release state that allows the support arm 20 and the positioning arm 50 to move relative to each other. Figure 3 As shown, in the schematic embodiment, the positioning member 60 is, for example, a lockable gas spring. The lockable gas spring is, for example, a lockable gas spring described in "GB / T39433-2020 Gas Spring Design Calculation". The lockable gas spring is, for example, an elastic lockable gas spring, but is not limited thereto. The piston rod 61 of the lockable gas spring is rotatably connected to the support arm 20, the cylinder 62 is rotatably connected to the positioning arm 50, and the rotation axis is parallel to the first direction D1. When in use, when it is necessary to adjust the relative position of the first rotating joint 10 and the second rotating joint 30, first press down the valve core 63 of the lockable gas spring to put the lockable gas spring in a released state, and then adjust it through the deformation of the parallel four-bar linkage structure. After reaching the target position, release the valve core 63 to put the lockable gas spring in a locked state. The relative position of the first rotating joint 10 and the second rotating joint 30 can be easily adjusted by the lockable gas spring.

[0081] like Figure 3 As shown, in the exemplary embodiment, the bracket 100 further includes a connecting member 71 and an adjusting shaft 72. The lockable gas spring is rotatably connected to the support arm 20 via the connecting member 71. Figure 4 for Figure 3 For a partial enlargement of Figure 4, the connecting member 71 is rotatably connected to the support arm 20 around an axis L8 parallel to the first direction D1. In the present exemplary embodiment, the connecting member 71 is composed of a plurality of components, but is not limited thereto. The end of the piston rod 61 of the lockable gas spring is inserted into and fixed to the connecting member 71. The adjusting shaft 72 is rotatably arranged in the connecting member 71, and the axis of rotation coincides with the axis of rotation of the connecting member 71 relative to the support arm 20. A groove 721 is concavely provided on the circumferential surface of the adjusting shaft 72. The valve core 63 of the lockable gas spring is inserted into the groove 721. The shape of the groove 721 is configured so that the rotating adjusting shaft 72 can push the valve core 63 through the groove wall of the groove 721, thereby switching the lockable gas spring from a locked state to a released state. That is, the adjusting shaft 72 and the valve core 63 form a cam structure, and the rotation of the adjusting shaft 72 is converted into a linear motion of the valve core 63. In an exemplary embodiment, the shape of the groove 721 can be set as required so that the lockable gas spring can be switched between a locked state and a released state by rotating the adjustment shaft 72. This structure can facilitate switching the state of the lockable gas spring.

[0082] like Figure 1 As shown, in the exemplary embodiment, the bracket 100 further includes a handle 73, which is fixedly connected to the adjustment shaft 72 and at least partially located outside the support arm 20. This facilitates operation.

[0083] Figure 5 A positioning arm 50 and a positioning member 60 are shown. Figure 5 As shown, in the exemplary embodiment, the positioning arm 50 includes two side plates 51 and a spacer plate 52. The two side plates 51 are perpendicular to the first direction D1 and are spaced apart along the first direction D1. The spacer plate 52 is parallel to the first direction D1 and connects the two side plates 51 to form a wiring groove 53 extending along the length direction L of the support arm 20. The positioning member 60 is disposed on the side of the spacer plate 52 facing away from the wiring groove 53. Figure 3 As shown, the space of the arm channel 25 located on the side of the partition plate 52 facing the wiring groove 53 is used to accommodate the transmission pipeline, thereby isolating the transmission pipeline from the positioning member 60, which is beneficial to protecting the transmission pipeline.

[0084] like Figure 3 As shown, in the schematic embodiment, the ends of the first joint body 11 and the second joint body 12 that are rotatably connected to each other are both tubular and mutually sleeved. The ends of the third joint body 31 and the fourth joint body 32 that are rotatably connected to each other are both tubular and mutually sleeved. In this way, a channel is formed in the center of the mutually sleeved parts to facilitate the transmission pipeline to pass through.

[0085] Figure 6 for Figure 3 Another partial enlarged picture of Figure 6As shown, the bracket 100 also includes a damping ring 91. A damping ring 91 is radially disposed between the mutually socketed ends of the first joint body 11 and the second joint body 12 to increase the rotational resistance between the first joint body 11 and the second joint body 12. Similarly, another damping ring 91 is radially disposed between the mutually socketed ends of the third joint body 31 and the fourth joint body 32 to increase the rotational resistance between the third joint body 31 and the fourth joint body 32. In actual operation, the rotational resistance must be overcome to achieve relative rotation. This can avoid changes in the rotational position caused by inadvertent minor collisions. In addition, if Figure 6 As shown, in the schematic embodiment, an adjusting screw 94 may also be provided. An adjusting screw 94 is passed through and threadedly connected to the second joint body 12, and may abut against the damping ring 91 between the first joint body 11 and the second joint body 12. By turning the adjusting screw 94, the rotational resistance of the first joint body 11 relative to the second joint body 12 may be adjusted. Similarly, another adjusting screw 94 is passed through and threadedly connected to the fourth joint body 32, and may abut against the damping ring 91 between the third joint body 31 and the fourth joint body 32. By turning the adjusting screw 94, the rotational resistance of the third joint body 31 relative to the fourth joint body 32 may be adjusted.

[0086] like Figure 6 As shown, the bracket 100 also includes a fixing member 92. One fixing member 92 is detachably fixedly connected to the end of one of the mutually sleeved ends of the first joint body 11 and the second joint body 12 as an axis (in the present schematic embodiment, it is the first joint body 11) to fix the relative position of the first joint body 11 and the second joint body 12 along the rotation axis. Similarly, another fixing member 92 is detachably fixedly connected to the end of one of the mutually sleeved ends of the third joint body 31 and the fourth joint body 32 as an axis (in the present schematic embodiment, it is the third joint body 31) to fix the relative position of the third joint body 31 and the fourth joint body 32 along the rotation axis. In other schematic embodiments, the fixing member 92 can also be replaced by a retaining spring to play the same limiting role.

[0087] like Figure 6 As shown, the bracket 100 further includes a bearing 93. The bearing 93 is disposed between the first joint body 11 and the second joint body 12 to support the rotation of both. The bearing 93 is also disposed between the third joint body 31 and the fourth joint body 32 to support the rotation of both. This can improve the stability of the rotation.

[0088] like Figure 1 As shown, in the exemplary embodiment, the rotation axis of the first joint body 11 relative to the second joint body 12 and the rotation axis of the third joint body 31 relative to the fourth joint body 32 are, for example, parallel to the second direction D2, wherein the second direction D2 is perpendicular to the first direction D1, but is not limited thereto.

[0089] Figure 7 for Figure 3 Exploded view of the bracket shown. Figure 7 As shown, in the schematic embodiment, the bracket 100 is provided with an operation port P at the first rotating joint 10, the support arm 20 and the second rotating joint 30. The operation port P is connected to the communication channel. When the installer inserts the transmission pipeline into the communication channel, for example, he can insert his hand or tool through the operation port P to guide the direction of the transmission pipeline, thereby facilitating the smooth passage of the transmission pipeline. The bracket 100 also includes a cover body C. The cover body C is detachably covered on the operation port P. In other schematic embodiments, the position and number of the operation port P can be adjusted as needed.

[0090] like Figure 1 and Figure 3 As shown, in the schematic embodiment, the bracket 100 also includes a first covering member 81 and a second covering member 82. The first covering member 81 is rotatably connected to the second joint body 12, and the axis of rotation coincides with the axis of rotation of the second joint body 12 relative to the support arm 20. The first covering member 81 can cover the gap leading to the connecting channel between the second joint body 12 and the support arm 20 during the rotation of the second joint body 12 relative to the support arm 20. The second covering member 82 is rotatably connected to the third joint body 31, and the axis of rotation coincides with the axis of rotation of the third joint body 31 relative to the support arm 20. The second covering member 82 can cover the gap leading to the connecting channel between the third joint body 31 and the support arm 20 during the rotation of the third joint body 31 relative to the support arm 20. This can prevent foreign matter from entering the gap and affecting the normal operation of the bracket.

[0091] The utility model also provides a medical device, which is, for example, a C-arm X-ray imaging device, for example, a mobile C-arm X-ray imaging device or a DSA angiography machine (DSA), but is not limited thereto. The object to be supported 200 of the medical device is, for example, a display, which is used to display the test results, but is not limited thereto. Figure 2 Take the mobile C-arm X-ray imaging device as an example. Figure 2 As shown, medical equipment includes Figure 1 The support 100 shown. The object 200 to be supported is finally connected to the base 300 through the support 100 and other structures. Among them, the first joint body 11 of the support 100 is connected to the object 200 to be supported through the connecting assembly 40. The fourth joint body 32 is used to connect to the base 300. The transmission pipeline connected to the object 200 to be supported passes through the communication channel of the support 100 and finally reaches the base 300.

[0092] When in use, the bracket can change the position and angle of the object to be supported by adjusting the relative rotation position of each rotating connection. A connecting channel is provided inside the bracket, which can hide the transmission pipeline inside, making it difficult for the transmission pipeline to rub against other components, thereby improving safety performance.

[0093] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0094] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present utility model. They are not intended to limit the scope of protection of the present utility model. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present utility model, such as combination, division or repetition of features, should be included in the scope of protection of the present utility model.

Claims

1. A bracket, characterized in that: include: A first rotating joint (10) comprising a first joint body (11) and a second joint body (12) which are rotatably connected, wherein the first joint body (11) is used to connect an object to be supported, and the first rotating joint (10) has a first joint channel (15) inside thereof which passes through the first joint body (11) and the second joint body (12); a support arm (20), one end of which is rotatably connected to the second joint body (12), and the support arm (20) has an arm channel (25) inside that passes through both ends thereof; and a second rotating joint (30), comprising a third joint body (31) and a fourth joint body (32) which are rotatably connected, wherein the third joint body (31) is rotatably connected to the other end of the support arm (20), and the second rotating joint (30) has a second joint channel (35) inside thereof which passes through the third joint body (31) and the fourth joint body (32); Wherein, the first joint channel (15), the arm channel (25) and the second joint channel (35) are connected end to end in sequence to form a connecting channel.

2. The bracket according to claim 1, characterized in that The bracket further comprises a connection assembly (40), wherein the connection assembly (40) comprises a connection plate (41) and a rotation support member (42), wherein the connection plate (41) is used to connect an object to be supported and has an opening (411) passing through along its thickness direction (H), and the rotation support member (42) is connected to the connection plate (41), and the first joint body (11) is rotatably connected to the rotation support member (42) around an axis perpendicular to the thickness direction (H), and a channel opening of the first joint channel (15) opened in the first joint body (11) is opposite to the opening (411).

3. The bracket according to claim 1, characterized in that: The rotation axis of the second joint body (12) relative to the support arm (20) and the rotation axis of the third joint body (31) relative to the support arm (20) are both parallel to the first direction (D1), and the bracket further comprises: a positioning arm (50) disposed in the arm channel (25), wherein two ends of the positioning arm (50) are rotatably connected to the second joint body (12) and the third joint body (31), respectively, and the rotation axes are parallel to the first direction (D1), and the support arm (20), the positioning arm (50), the second joint body (12) and the third joint body (31) form a parallel four-bar linkage structure; and A positioning member (60) is arranged in the arm channel (25) and connects the support arm (20) and the positioning arm (50), and the positioning member (60) can be switched between a locking state for fixing the relative position of the support arm (20) and the positioning arm (50) and a releasing state for allowing the support arm (20) and the positioning arm (50) to move relative to each other.

4. The bracket according to claim 3, characterized in that: The positioning member (60) is a lockable gas spring, one of the piston rod (61) and the cylinder (62) of the lockable gas spring is rotatably connected to the support arm (20), and the other is rotatably connected to the positioning arm (50), and the rotation axes are parallel to the first direction (D1).

5. The bracket according to claim 4, characterized in that The support also includes: a connecting member (71) rotatably connected to the support arm (20) around an axis parallel to the first direction (D1), the end of the piston rod (61) of the lockable gas spring being inserted into and fixed to the connecting member (71); and An adjusting shaft (72) is rotatably inserted into the connecting member (71), and the rotation axis coincides with the rotation axis of the connecting member (71) relative to the support arm (20); a groove (721) is concavely provided on the circumferential surface of the adjusting shaft (72), and the valve core (63) of the lockable gas spring is inserted into the groove (721); the shape of the groove (721) is set so that the rotating adjusting shaft (72) can push the valve core (63) through the groove wall of the groove (721), thereby switching the lockable gas spring from one of the locked state and the released state to the other state.

6. The bracket according to claim 3, characterized in that: The positioning arm (50) comprises: two side plates (51), both of which are perpendicular to the first direction (D1) and spaced apart along the first direction (D1); and A partition plate (52) is parallel to the first direction (D1) and connects the two side plates (51) to form a wiring groove (53) extending along the length direction (L) of the support arm (20) with the two side plates (51), and the positioning member (60) is arranged on a side of the partition plate (52) facing away from the wiring groove (53).

7. The bracket according to claim 1, characterized in that: The ends of the first joint body (11) and the second joint body (12) that are rotatably connected to each other are both tubular and mutually sleeved, and / or the ends of the third joint body (31) and the fourth joint body (32) that are rotatably connected to each other are both tubular and mutually sleeved.

8. The bracket according to claim 1, characterized in that: The bracket is provided with an operation port (P) at the first rotating joint (10), the supporting arm (20) and / or the second rotating joint (30), wherein the operation port (P) is connected to the connecting passage, and the bracket also includes a cover body (C), wherein the cover body (C) is detachably covered on the operation port (P).

9. The bracket according to claim 1, characterized in that: The support also includes: a first covering member (81) rotatably connected to the second joint body (12), wherein the rotation axis coincides with the rotation axis of the second joint body (12) relative to the support arm (20), and the first covering member (81) is capable of covering a gap between the second joint body (12) and the support arm (20) leading to the communication passage during the rotation of the second joint body (12) relative to the support arm (20); and / or A second covering member (82) is rotatably connected to the third joint body (31), and the rotation axis coincides with the rotation axis of the third joint body (31) relative to the support arm (20). The second covering member (82) can cover the gap between the third joint body (31) and the support arm (20) leading to the connecting passage during the rotation of the third joint body (31) relative to the support arm (20).

10. A medical device, characterized in that The bracket comprises the bracket as claimed in any one of claims 1 to 9, wherein the first joint body (11) is connected to an object (200) to be supported by the medical device.

11. The medical device according to claim 10, characterized in that The medical device is a C-arm X-ray imaging device, the object to be supported (200) is a display, and the fourth joint body (32) is connected to a base (300) of the C-arm X-ray imaging device.

Images