Imaging equipment connecting component and diagnosis and treatment device

Abstract

The embodiment of the invention provides an imaging equipment connecting part and a diagnosis and treatment device. The connecting component comprises a rotating arm (30) and an extension arm (3000), the extension arm comprises a first arm (100), a second arm (200) and a hydraulic assembly (400), the rotating arm is connected between the trolley and the near end of the first arm, the second arm is connected between the far end of the first arm and the imaging equipment, and the rotating arm drives the extension arm to rotate around the first shaft or to be static; the hydraulic assembly comprises a pressure input part (420), a hydraulic shell (430) and a pressure output part (440), and the pressure output part is located at the near end of the hydraulic shell and rotationally connected with the trolley first ball; the pressure input part extends into the far end of the hydraulic shell and is connected with the near end of the first arm; the pressure input part applies the received pressure to the first ball rotating joint through the hydraulic assembly; the axial cross-sectional area of the pressure input portion is smaller than the axial cross-sectional area of the pressure output portion so as to reduce the weight of the extension arm and enable the extension arm to provide large reaction torque force.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an imaging device connecting component and a diagnosis and treatment device. Background Art

[0002] The trolley is usually used to display diagnosis and treatment information, plan and navigate imaging equipment, and is connected to the imaging equipment through the imaging equipment connection component. The imaging equipment connection component includes an extension arm. During the diagnosis and treatment process, the imaging equipment is moved closer to or farther away from the patient by adjusting the extension degree of the extension arm. Considering that the patient may be affected when the distance between the trolley and the patient is close, it is expected that the extension length of the extension arm is longer.

[0003] In the related art, the proximal end of the extension arm is designed to be heavier so as to be able to output a larger anti-torque force, and the anti-torque force is used to support the distal end of the extension arm to bear a larger weight, so that the extension arm with a longer extension length can be stably in an extended state.

[0004] However, this design will increase the difficulty for the medical staff to manipulate the extension arm, and may even cause the distal end of the extension arm to fall due to the medical staff's mistakes. Summary of the invention

[0005] The embodiments of the present application provide an imaging device connecting component and a diagnosis and treatment device, which are conducive to reducing the weight of the extension arm itself while providing a counter-torque force, thereby reducing the difficulty of operating the extension arm.

[0006] The embodiment of the present application provides an imaging device connecting component for connecting a trolley and supporting an imaging device, and the imaging device connecting component includes:

[0007] A rotating arm and an extension arm, wherein the proximal end of the rotating arm is connected to the trolley, the proximal end of the extension arm is connected to the distal end of the rotating arm, and the distal end of the extension arm is connected to the imaging device; the rotating arm is used to drive the extension arm to rotate or remain stationary around a first axis relative to the trolley;

[0008] Extension arm includes:

[0009] A first arm and a second arm, wherein the proximal end of the first arm is connected to the distal end of the rotating arm, the distal end of the first arm is hinged to the proximal end of the second arm, and the distal end of the second arm is connected to an imaging device;

[0010] A hydraulic component, the hydraulic component includes a pressure input part, a hydraulic housing and a pressure output part, the pressure output part is located at the proximal end of the hydraulic housing and is rotatably connected to the first ball of the trolley; the pressure input part extends into the distal end of the hydraulic housing and is connected to the proximal end of the first arm; the pressure input part is subjected to pressure along the pressure input part toward the pressure output part, and the pressure is applied to the first ball rotation connection through the liquid in the hydraulic housing and the pressure output part; wherein the axial cross-sectional area of ​​the pressure input part is smaller than the axial cross-sectional area of ​​the pressure output part.

[0011] In a feasible implementation, the hydraulic assembly further includes a pre-tightening member, the pressure input portion is penetrated by the pre-tightening member, and the pre-tightening member is coaxially threadedly connected to the distal end of the hydraulic housing to pre-tighten the pressure input portion.

[0012] In a feasible implementation, the pressure input part includes an input piece, which is convexly arranged along its own circumference to form a convex portion, the convex portion is located between the distal end of the hydraulic housing and the shoulder of the preload member, and the convex portion can move axially along the input piece between the distal end of the hydraulic housing and the shoulder of the preload member.

[0013] In a feasible implementation, the pressure input part also includes a push rod, which abuts against the input part; the hydraulic component also includes a first elastic part, which abuts between the push rod and the pressure output part, so that the input part is always pressed against the contact surface of the push rod, and the contact surface is the surface of the push rod used to contact the input part.

[0014] In a feasible implementation, the hydraulic assembly further includes a fixing ring, which is sleeved on the first elastic member and the input member, and an outer wall of the fixing ring contacts an inner wall of the hydraulic housing.

[0015] In a feasible implementation, the hydraulic assembly further includes a first sealing ring, which is sleeved on the input member and whose outer wall contacts the inner wall of the hydraulic housing to block the liquid in the hydraulic housing.

[0016] In a feasible implementation, the hydraulic assembly further includes a second sealing ring, the second sealing ring is sleeved on the pressure output portion and the outer wall of the second sealing ring contacts the inner wall of the hydraulic housing.

[0017] In a feasible implementation, the extension arm further includes a locking assembly, which includes a rotating member and a moving member, the rotating member is transmission-connected to the moving member, a first inclined surface which is at an angle to its own axial direction is constructed on the moving member, and the distal end of the pressure input portion abuts against the first inclined surface;

[0018] When the rotating member rotates, it drives the moving member to move along the first direction or the second direction of its own axis, so as to apply or release pressure to the pressure input part.

[0019] In a feasible implementation, the extension arm further includes a first transmission member and a second transmission member, the first transmission member is fixedly connected to the rotating member, and the second transmission member is fixedly connected to the moving member; the first transmission member and the second transmission member are threadedly transmitted.

[0020] In a feasible implementation, the first transmission member is fixedly connected to the rotating member through a locking member; the inner periphery of the locking member is structured with at least one inner surface, which is inscribed in a certain arc surface of its own inner periphery; the outer periphery of the first transmission member is structured with at least one outer surface, which is inscribed in a certain arc surface of its own outer periphery; the first transmission member and the locking member rotate synchronously coaxially through the inner surface and the outer surface.

[0021] In a feasible implementation, the extension arm further includes a rotating component, the rotating component includes a first rotating part and a second rotating part, the first rotating part and the second rotating part are coaxially hinged, the first arm is connected to the first rotating part; the second arm is connected to the second rotating part; so that when the first rotating part and the second rotating part rotate relative to each other, the relative angle between the first arm and the second arm is driven to change;

[0022] The first rotating part and the second rotating part are both sleeved on the moving part, and the locking assembly also drives the first rotating part and the second rotating part to rotate relative to each other or to be stationary.

[0023] In a feasible implementation, the rotating component further includes a first conical surface and a second conical surface that cooperate with each other, and the first rotating part and the second rotating part are mutually clamped through the first conical surface and the second conical surface;

[0024] The first tapered surface is formed on the inner circumference or outer circumference of one end of the first rotating part, and the second tapered surface is correspondingly formed on the outer circumference or inner circumference of one end of the second rotating part.

[0025] In a feasible implementation, the extension arm further includes a pushing member, the second arm is sleeved on the pushing member, and the distal end of the pushing member is rotatably connected to the second ball of the imaging device;

[0026] The locking assembly also includes a thrust block, which is sleeved between the moving member and the second rotating part and can rotate with the second rotating part; the thrust block is structured with a third inclined surface forming an angle with the axial direction, and the proximal end of the pushing member abuts against the third inclined surface.

[0027] In a feasible implementation, a rotating connection member is installed on one end surface of the locking member, and the rotating connection member extends into a connecting portion located at the second rotating portion, so that the locking member and the second rotating portion rotate relative to each other.

[0028] In a feasible implementation, the imaging device connecting component further includes a base, the base is fixedly connected to the trolley, and the base extends along the first axis; the proximal end of the rotating arm is sleeved on the base;

[0029] The base and the rotating arm are provided with a first locking part and a second locking part that cooperate with each other. By operating the first locking part and the second locking part to disengage or engage, the rotating arm can rotate or remain stationary around the first axis relative to the base.

[0030] In a feasible implementation, the connecting component further includes a displacement assembly, and the displacement assembly is used to drive the second locking portion to move along the first axis so that the second locking portion is disengaged from or engaged with the first locking portion.

[0031] In a feasible implementation, the displacement assembly includes a floating joint, the floating joint is provided with an internal thread extending along the first axis, and the base is provided with an external thread extending along the first axis;

[0032] The floating joint is sleeved on the base, and the internal thread of the floating joint is transmission-connected with the external thread of the base; the floating joint is fixedly connected with the rotating arm, and when the floating joint is rotated, it drives the rotating arm to move toward or away from the first stop portion.

[0033] In a feasible implementation, the displacement assembly further includes a connecting member, and the connecting member is sandwiched between the floating joint and the rotating arm.

[0034] In a feasible implementation, the displacement assembly further includes a collar, which is sleeved on the floating joint and the connecting piece, and the collar is fixedly connected to the floating joint;

[0035] When the collar is rotated, the floating joint rotates with the collar and moves along the first axis.

[0036] In a feasible implementation, the collar is protruded outwardly along the first axis to form an annular protrusion, and the annular protrusion is used to be located in the accommodating portion of the trolley and move along the first axis in the accommodating portion.

[0037] In a feasible implementation, the base includes a mounting portion, the mounting portion is provided with a mounting hole extending along the first axis, and the fastener passes through the mounting hole and extends into the trolley to fix the base and the trolley.

[0038] In a feasible implementation, the slope of the external thread and the internal thread is configured to be smaller than a preset value.

[0039] In a feasible implementation, the base includes a first sleeve portion extending along the first axis, and the rotating arm includes a second sleeve portion, and the second sleeve portion is sleeved on the first sleeve portion;

[0040] The first stopper is configured as first teeth arranged at intervals along the outer circumferential direction of the first sleeve portion, and the second stopper is configured as second teeth arranged at intervals along the inner circumferential direction of the second sleeve portion and matching the first teeth.

[0041] An embodiment of the present application also provides a diagnosis and treatment device, including an imaging device, a trolley and the aforementioned imaging device connecting component, wherein the trolley is connected to the imaging device via the imaging device connecting component.

[0042] In an imaging device connection component provided by an embodiment of the present application, after manipulating the extension arm to be in a target position, the pressure input part is operated to slide along the first arm in a direction close to the pressure output part to squeeze the liquid in the hydraulic housing, so that the counter torque force is output from the pressure output part to the first ball rotation connection. Since the axial cross-sectional area of ​​the pressure input part is smaller than the axial cross-sectional area of ​​the pressure output part, the hydraulic component is configured as a force lever, the pressure input part inputs the first locking force to the hydraulic housing, and the pressure output part can output the multiplied first locking force to the first ball rotation connection. The first ball rotation connection cannot rotate due to the multiplied first locking force, so that the weight of the extension arm itself and the imaging device can be resisted, so that the extension arm is in the target position. It can be seen that sufficient counter torque force is provided by the hydraulic component, and the counter torque force only acts within the hydraulic component and the rotating component, and will not affect the first arm, so there is no need to design the first arm heavier, which solves the problem of increasing the weight of the metal parts in the extension arm to provide the counter torque force in the related art, which makes it difficult for the diagnosis and treatment personnel to operate.

[0043] In addition, the force lever between the pressure input part and the pressure output part of the hydraulic assembly improves the ability to lock the extension arm at the target extension position. It can be understood that even if the extension length of the extension arm is designed to be longer, the hydraulic assembly can be used to provide a larger counter-torque force for the first joint ball to lock the extension arm at the target extension position. Then, in the embodiment of the present application, the extension length of the extension arm can be designed to be longer to meet the goal of keeping the patient away from the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the positions of the extension arm and the trolley provided in an embodiment of the present application;

[0045] Figure 2 yes Figure 1 A schematic diagram of the structure in which the extension arm is in a retracted state;

[0046] Figure 3 yes Figure 2 A schematic cross-sectional view of a hydraulic assembly in FIG.

[0047] Figure 4 3 is a schematic diagram of the structure of the hydraulic housing;

[0048] Figure 5 for Figure 2 A schematic diagram of the connection relationship between the first spherical joint and the hydraulic assembly;

[0049] Figure 6 for Figure 5 A schematic diagram of the structure of the first ball sleeve;

[0050] Figure 7 for Figure 3 or Figure 5 A schematic diagram of the structure of the first fixing ring;

[0051] Figure 8 for Figure 3 A schematic diagram of the exploded structure of the first elastic member and the input member;

[0052] Fig. 9 for Figure 3 Structural schematic diagram of the medium pressure output part;

[0053] Fig.10 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 1 ;

[0054] Fig.11 for Fig.10 Schematic diagram of the structure of the moving parts;

[0055] Fig.12a for Figure 2 A connection structure diagram of the second arm and the second spherical joint;

[0056] Figure 12b for Fig.12a A schematic diagram of the structure of the second ball sleeve;

[0057] Fig.13 for Fig.10 Schematic diagram of the structure of the middle thrust block;

[0058] Fig.14a for Fig.10 A schematic diagram of the structure of the locking member;

[0059] Fig.14b for Fig.10 A schematic structural diagram of the first transmission member;

[0060] Fig.14c for Fig.10 Schematic diagram of the local structure at C in the middle;

[0061] Fig.15 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 2 ;

[0062] Fig.16 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 3 ;

[0063] Fig.17 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 4 ;

[0064] Fig.18 for Figure 1 Schematic diagram of the structure of the central rotating arm and the base;

[0065] Fig.19 for Fig.18 Cross-sectional view of the rotating arm and base Figure 1 ;

[0066] Fig. 20 for Figure 1 A perspective structural diagram of the rotating arm and base in FIG.

[0067] Fig.21 for Fig. 20 The enlarged structure diagram at A in the middle;

[0068] Fig. 22 for Fig.18 An exploded view of the first angle of the middle rotating arm and base;

[0069] Fig.23 for Fig.18 Exploded view of the second angle of the middle rotating arm and base;

[0070] Fig.24 for Fig.18 Cross-sectional view of the central rotating arm and base Figure 2 ;

[0071] Fig.25 for Fig.24 The enlarged structure diagram at B in the middle;

[0072] Fig.26 for Fig.25 Schematic diagram of the structure of the floating joint;

[0073] Fig. 27 for Fig.25 A schematic diagram of the structure of the connecting parts in FIG.

[0074] Fig.28 for Fig.28 Simulation effect diagram of the middle rotating arm and extension arm.

[0075] Description of reference numerals:

[0076] 1000-imaging equipment connection parts; 3000-extension arm; 2000-trolley;

[0077] 10-base; 30-rotating arm; 100-first arm; 110-first spherical joint; 200-second arm; 210-second spherical joint; 300-rotating component; 400-hydraulic assembly; 500-locking assembly; 40-shifting assembly; 2100-display; 2200-operating table; 2300-frame;

[0078] 420-pressure input part; 430-hydraulic housing; 440-pressure output part; 441-first elastic member; 442-second sealing ring; 421-fixing ring; 422-elastic retaining ring; 423-first sealing ring; 424-preload member; 4241-shaft shoulder; 426-input member; 4261-convex part; 427-push rod; 310-first rotating part; 320-second rotating part; 311-first cone surface; 312-second cone surface; 510-rotating member; 520-locking member; 530-moving member; 610-pushing member; 62 0-second elastic member; 540-thrust block; 550-first transmission member; 560-second transmission member; 570-bearing; 11-first stopper; 13-first sleeve connection; 14-mounting portion; 141-mounting hole; 31-second stopper; 33-second sleeve connection; 34-connecting portion; 41-floating joint; 411-first part; 412-second part; 413-connecting end; 44-connecting member; 44a-first part; 44b-second part; 44c-fixing hole; 12-external thread; 45-ring; 451-annular protrusion;

[0079] 111-first ball sleeve; 1111, 2112-notch; 1131-annular arc surface; 1132-central channel; 112-first ball head; 113-first fixing ring; 114-first shell; 211-second ball sleeve; 2111-first clamping part; 212-second ball head; 213-second fixing ring; 214-second shell; 431-first cavity; 432-second cavity; 433-third cavity; 434-fourth cavity; 443-annular groove; 531-first inclined surface; 42 5-second inclined plane; 541-third inclined plane; 611-fourth inclined plane; 521-rotating connecting piece; 522-first plane; 523-rotating connecting hole; 321-connecting part; 201-third conical surface; 2141-fourth conical surface; 551-second plane; 532-positioning ring; 533-screw; 534-fixing hole; F1-first thrust, F1'-first pressure; f2-second pressure; F1"-first reaction force; F2-second thrust; F2"-second reaction force; z-first axis. DETAILED DESCRIPTION

[0080] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0081] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Unless otherwise specified, the "proximal end" in this embodiment can be used to indicate the end of the component close to the trolley, and the "distal end" can be used to indicate the end of the component away from the trolley; the "inner peripheral side" can be used to indicate that the contour line of the component is inward, and the "outer peripheral side" can be used to indicate that the contour line of the component is outward.

[0082] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0084] In the field of medical devices, one end of the imaging device connection assembly is connected to a trolley, and the other end is connected to the imaging device, and the trolley is used to display diagnosis and treatment information, plan and navigate the imaging device, so as to enable the use of the imaging device for the patient. Among them, the display of diagnosis and treatment information includes but is not limited to displaying the status of the operation before and / or during the operation, displaying two-dimensional and / or three-dimensional images, etc. The imaging device can be an ultrasound probe, etc., which is usually used in the transrectal ultrasound diagnosis and treatment of male prostate.

[0085] In applications, the patient and the trolley may be in different treatment spaces, that is, the positional relationship of the patient relative to the trolley changes. In this case, the imaging device connection assembly is configured to include a rotating arm and an extension arm. The rotating arm is connected between the trolley and the extension arm, and the end of the extension arm is connected to the imaging device. The rotating arm is connected to the trolley in a rotational manner around the gravity direction of the trolley, so as to drive the extension arm to be located at different positions on the ring side of the trolley, thereby realizing the use of imaging devices for patients in different treatment spaces. The extension arm has multiple degrees of freedom so that it can swing flexibly based on the position and posture of the imaging device. A swivel is usually provided on the folding part of the extension arm so that all degrees of freedom of the extension arm can be limited at one time by rotating the swivel.

[0086] In the above-mentioned extension arm, when the maximum length that the extension arm can extend is short, the patient will be closer to the trolley, which will affect the operation of the medical staff. Therefore, it is desired to design the extension length of the extension arm to be longer so that the patient can be farther away from the trolley to facilitate the operation of the medical staff. In order to achieve the above-mentioned purpose, the extension length of the extension arm is designed to be 550 mm, and the longest length that can be designed can reach 730 mm.

[0087] In order to fix the extension arm in the extended state and prevent it from collapsing, a larger anti-torque force is required at the proximal end of the extension arm. Therefore, the related art is to design the metal extension arm longer and thicker so that the proximal end of the extension arm can output a larger anti-torque force to the distal end.

[0088] However, as the extension arm's extension length increases, its own weight also increases. This design is not flexible and has certain risks. It increases the difficulty for the medical staff to operate the extension arm, and may even cause the end of the extension arm to fall due to the medical staff's mistakes. For example, when the medical staff is not ready when loosening the imaging device connection component, the weight of the extension arm and the distal instrument will be completely released and fall to the ground, causing damage to the imaging device or injuring the medical staff.

[0089] It can be seen that the two requirements lead to a contradiction in design: one is that the extension arm is light and easy to use, and the other is that sufficient anti-torque force is required to support the imaging device at the end. Therefore, how to achieve a longer extension length while being light and easy to use has become an urgent problem to be solved.

[0090] In view of the above problems, an embodiment of the present application provides an extension arm for connecting to a trolley and supporting an imaging device, where the imaging device may be an ultrasound probe or the like.

[0091] The structures of the extension arm and the diagnosis and treatment device of the embodiment of the present application are described in detail below with reference to the accompanying drawings.

[0092] Figure 1 It is a schematic diagram of the positions of the extension arm and the trolley provided in an embodiment of the present application. Figure 2 yes Figure 1 Schematic diagram of the structure in which the extension arm is in a retracted state. Figure 3 yes Figure 2 The cross-sectional structure diagram of the hydraulic components in the Figures 1 to 3 As shown, the imaging device connecting component 1000 includes a rotating arm 30 and an extension arm 3000, the proximal end of the rotating arm 30 is connected to the trolley 2000, the proximal end of the extension arm 3000 is connected to the distal end of the rotating arm 30, and the distal end of the extension arm 3000 is connected to the imaging device; the rotating arm 30 is used to drive the extension arm 3000 to rotate or remain stationary around the first axis z relative to the trolley 2000.

[0093] The extension arm 3000 includes at least two connecting arms, each of which is hinged in sequence. The first connecting arm is connected to the distal end of the rotating arm through a spherical joint, and the last connecting arm is connected to the diagnosis and treatment device through another spherical joint. Under this structure, the multi-degree-of-freedom movement of the head and tail connecting arms and the rotation of multiple connecting arms in the middle can be realized to meet various application scenarios of the diagnosis and treatment device. In addition, a hydraulic component is added to the connecting arm, and the pressure generated by the hydraulic component is used to lock the degrees of freedom of each connecting arm and fix the posture of the extension arm.

[0094] As one of the embodiments, the number of connecting arms is set to two, which are called the first arm and the second arm. The extension arm 3000 includes a first arm 100, a second arm 200, a first spherical joint 110, a second spherical joint 210 and a hydraulic assembly 400. The distal end of the first arm 100 is hinged with the proximal end of the second arm 200, and the distal end of the second arm 200 is connected to the imaging device; the first arm 100 is rotatably connected to the first ball of the rotating arm through the first spherical joint 110 to achieve multi-degree-of-freedom movement of the first arm 100; the first arm 100 and the second arm 200 are hinged, so the two arms can be extended and folded in the form of hinges; at the same time, the second arm 200 is connected to the imaging device through the second spherical joint 210, and the imaging device can also be adjusted in multiple degrees of freedom based on the second arm 200. For the sake of convenience, the degree of freedom of the hinge between the first arm 100 and the second arm 200 can be called the first degree of freedom, the rotational degree of freedom formed between the first arm 100 and the rotating arm through the first spherical joint 110 can be called the second degree of freedom, and the rotational degree of freedom formed between the second arm 200 and the imaging device through the second spherical joint 210 can be called the third degree of freedom.

[0095] In order to realize the function of locking the degree of freedom of the ball joint, the hydraulic assembly 400 can be set on any connecting arm without limitation. As an example, the hydraulic assembly 400 is set on the first arm 100 to perform locking and unlocking of the first ball joint 110. Specifically, Figure 3As shown, the hydraulic component 400 includes a pressure input part 420, a hydraulic housing 430 and a pressure output part 440. The hydraulic housing 430 is used to load liquid for transmitting pressure. The pressure input part 420 and the pressure output part 440 are respectively arranged at the distal end and the proximal end of the hydraulic housing 430. The pressure input part 420 is subjected to pressure and applies the pressure to the first spherical joint 110 through the liquid and the pressure output part 440. Optionally, the pressure output part 440 is located at the proximal end of the hydraulic housing 430 and is rotatably connected to the rotating arm through the first spherical joint 110; the pressure input part 420 extends into the distal end of the hydraulic housing 430, and the first arm 100 is sleeved on part of the pressure input part 420; after the pressure input part 420 is subjected to force, the liquid is squeezed in the direction close to the pressure output part 440, and then the counter-torque force is output from the pressure output part 440 to the first spherical joint 110 to lock the first spherical joint 110; wherein, the axial cross-sectional area of ​​the pressure input part 420 is smaller than the axial cross-sectional area of ​​the pressure output part 440.

[0096] The pressure input part 420 and the pressure output part 440 may be implemented in a form that the input shaft, the output shaft and the hydraulic housing 430 are coaxially installed, and the present application does not impose any specific limitation on this.

[0097] It can be understood that the pressure input part 420 is partially located inside the hydraulic housing 430 and partially located outside the hydraulic housing 430 , and the first arm 100 is sleeved on the part of the pressure input part 420 located outside the hydraulic housing 430 .

[0098] Figure 4 3 is a schematic diagram of the structure of the hydraulic housing. In some embodiments of the present application, the hydraulic housing 430 includes a first cavity 431 and a second cavity 432 that are coaxially connected, and the radial dimension of the first cavity 431 is smaller than the radial dimension of the second cavity 432, wherein the pressure input portion 420 extends to be located in the first cavity 431, and the pressure output portion 440 is located in the second cavity 432. In the case where the pressure input portion 420 extends to the first cavity 431 and the pressure output portion 440 is located in the second cavity 432, an accommodation space is formed between the hydraulic housing 430, the pressure input portion 420 and the pressure output portion 440, and the liquid that transmits pressure is accommodated in the accommodation space.

[0099] Figure 5 for Figure 2 Schematic diagram of the connection relationship between the first spherical joint and the hydraulic assembly. Figure 3 and Figure 5As shown, in some embodiments of the present application, the first spherical joint 110 includes a first ball sleeve 111, a first ball head 112, a first fixing ring 113 and a first housing 114, and the first ball head 112 is fixedly connected to the rotating arm through a first connecting member 140. The first ball sleeve 111 and the first housing 114 are coaxially connected, sleeved on the outside of the first ball head 112 and the hydraulic assembly 400, and sleeved with the proximal end of the first arm 100; the hydraulic assembly 400 is partially located in the accommodation space formed by the first ball sleeve 111 and the first housing 114. The first fixing ring 113 abuts between the first ball head 112 and the pressure output part 440, so that the first ball head 112 can rotate in the spherical space formed by the first fixing ring 113 and the first ball sleeve 111, so as to realize the rotation connection between the first arm 100 and the rotating arm.

[0100] Optionally, the first spherical joint 110 may include a threaded connection structure, and the first housing 114 and the first ball sleeve 111 are fixedly connected through the threaded connection structure, and the threaded connection structure includes a first connection thread and a second connection thread, one of the first connection thread and the second connection thread is arranged on a part of the inner wall or a part of the outer wall of the first housing 114, and the other is correspondingly arranged on a part of the outer wall or a part of the inner wall of the first ball sleeve 111, wherein the first connection thread and the second connection thread both extend along the axial direction of the first housing 114. It should be noted that the threaded fixed connection is a way to achieve the fixation of the first housing 114 and the first ball sleeve 111, and the embodiment of the present application does not specifically limit the fixed connection method of the first housing 114 and the first ball sleeve 111. In addition, the first housing 114 is also used as the housing of the hydraulic assembly 400 to make the appearance of the hydraulic assembly 400 simple.

[0101] In some embodiments of the present application, the first ball sleeve 111 is also fixedly connected to the hydraulic housing 430. Optionally, the first ball sleeve 111 and the hydraulic housing 430 can be fixedly connected by a threaded structure. In some embodiments, part of the outer wall of the hydraulic housing 430 is provided with an external thread extending along its own axial direction, and part of the inner wall of the first ball sleeve 111 is provided with an internal thread extending along its own axial direction. The external thread of the hydraulic housing 430 cooperates with the internal thread of the first ball sleeve 111 to achieve a fixed connection between the first ball sleeve 111 and the hydraulic assembly 400. Among them, the part of the outer wall can be the outer wall corresponding to the second cavity 432.

[0102] Figure 6 for Figure 5 The structural diagram of the first ball sleeve is as follows: Figure 5 and Figure 6As shown, in some embodiments of the present application, in order to improve the flexibility of the free rotation of the first ball head 112, a notch 1111 is provided at one end of the first ball sleeve 111 for inserting into the first ball head 112, so as to improve the rotational freedom of the first ball head 112. In addition, the notch 1111 is provided to facilitate the connection between the first ball head 112 and the rotating arm. The notch 1111 can be configured as an arc-shaped notch, and the present application does not specifically limit the shape of the notch 1111.

[0103] Figure 7 for Figure 3 or Figure 5 Schematic diagram of the structure of the first fixing ring in the embodiment of the present application. In some embodiments of the present application, the proximal end surface of the first fixing ring 113 is configured as an annular arc surface 1131, and the curvature of the annular arc surface 1131 matches the curvature of the surface of the first ball head 112. The distal end of the first fixing ring 113 abuts against the pressure output portion 440; and the first fixing ring 113 is configured with a central channel 1132, which is used to accommodate the first ball head 112.

[0104] In some embodiments of the present application, the liquid used to transmit pressure in the hydraulic housing 430 may be hydraulic oil, and the embodiments of the present application do not impose any specific limitation on this.

[0105] In the embodiment of the present application, the hydraulic assembly 400 is configured as a force lever using the Pascal principle, that is, the force output by the pressure output part 440 is a preset multiple of the force input by the pressure input part 420, and the preset multiple is equal to the axial cross-sectional area ratio of the pressure output part 440 to the pressure input part 420. In this way, only a small pressure needs to be applied to the pressure input part 420 to provide a large counter-torque force for the first ball head 112 to lock the first spherical joint 110, thereby achieving a labor-saving effect and reducing the difficulty of the diagnosis and treatment personnel in operating the extension arm 3000.

[0106] For example, in the embodiment of the present application, if a counter-torque force of 1000 Newtons is required to lock the first ball head 112, and the axial cross-sectional area ratio of the pressure output part 440 to the pressure input part 420 is configured to be 25 times, then the hydraulic assembly 400 can be understood as a force lever with a preset multiple of 25 times. That is, if a force of 1000 Newtons needs to be output from the pressure output part 440 to the first ball head 112, only a pressure of 40 Newtons needs to be applied to the pressure input part 420. At the same time, the 40 Newton force only acts on the pressure input part 420 and will not be transmitted to the first arm 100. Therefore, there is no need to increase the counter-torque force output to the first ball head 112 by setting the first arm 100 thicker, thereby reducing the structural size of the first arm 100.

[0107] Through the above solution, after the medical staff manipulates the extension arm to be in the target telescopic position, they input pressure to the pressure input part 420, and the pressure is amplified by the liquid and the pressure output part 440 and acts on the first ball head 112, so as to resist the weight of the extension arm 3000 itself and the imaging device, thereby locking the first spherical joint 110 to achieve the extension arm in the target telescopic position. The pressure amplification factor is the ratio of the axial cross-sectional area of ​​the pressure output part 440 to the pressure input part 420.

[0108] It can be seen that the hydraulic assembly 400 provides sufficient counter-torque force, and the counter-torque force only acts within the hydraulic assembly 400, and will not affect the first arm 100. Therefore, there is no need to design the first arm 100 to be heavier, which solves the problem of increasing the weight of the metal parts in the extension arm to provide counter-torque force in the related art, which makes it difficult for the medical staff to operate. Among them, the first arm 100 can be a metal part. In addition, the force lever between the pressure input part 420 and the pressure output part 440 of the hydraulic assembly 400 improves the ability to lock the extension arm 3000 in the target telescopic position. It can be understood that even if the extension length of the extension arm 3000 is designed to be longer, the hydraulic assembly 400 can be used to provide a larger counter-torque force for the first ball head 112, so as to lock the extension arm 3000 in the target telescopic position. Then, in the embodiment of the present application, the extension length of the extension arm 3000 can also be designed to be longer to meet the goal of keeping the patient away from the trolley 2000.

[0109] like Figure 3 As shown, in some other embodiments of the present application, the hydraulic component 400 also includes a first elastic member 441, the two ends of which are respectively abutted against the pressure output part 440 and the pressure input part 420, and the first elastic member 441 is mainly used for buffering, shock absorption and stabilizing the movement of the hydraulic component 400.

[0110] Figure 8 for Figure 3 Schematic diagram of the decomposition structure of the first elastic member and the input member. Figure 3 As shown, in some embodiments of the present application, the pressure input portion 420 may include an input member 426 and a push rod 427 that are in contact with each other, the first arm 100 is sleeved on the input member 426 and the push rod 427, and the proximal end of the first arm 100 is located at the input member 426; Figure 8As shown, in order to achieve the positioning of the input member 426 and the first elastic member 441, the proximal axial diameter of the input member 426 is retracted to construct a journal 4211, and a positioning surface b1 is formed at the retracted position of the journal of the input member 426, and the positioning surface b1 abuts against an end surface b2 of the first elastic member 441, and the side wall a1 of the journal 4211 contacts the inner wall a2 of the first elastic member 441 to achieve the abutment between the input member 426 and the first elastic member 441, and accordingly, the abutment between the first elastic member 441 and the pressure input portion 420 is achieved.

[0111] Through the above solution, when the push rod 427 pushes the input member 426 to move in the direction close to the pressure output part 440 to transmit the received pressure to the pressure output part 440, the first elastic member 441 is in a compressed state and has an elastic restoring force, and the elastic restoring force includes a first elastic restoring force acting on the input member 426 and a second elastic restoring force acting on the pressure output part 440. Among them, the first elastic restoring force can ensure that the input member 426 is always pressed against the contact surface of the push rod 427, wherein the contact surface is the contact surface of the push rod 427 for contacting the input member 426. The second elastic restoring force is transmitted to the first fixing ring 113 and the first ball head 112 through the pressure output part 440, so as to press the first fixing ring 113 and the first ball head 112 tightly into the first ball sleeve 111, which can ensure that the first ball head 112 and the first fixing ring 113 always have a spherical contact surface.

[0112] like Figure 3 and Figure 4 As shown, in some embodiments of the present application, the hydraulic housing 430 is further configured with a third cavity 433 and a fourth cavity 434, the third cavity 433 and the fourth cavity 434 are located between the first cavity 431 and the second cavity 432, and the third cavity 433 is closer to the second cavity 432 than the fourth cavity 434. Optionally, the radial dimensions of the first cavity 431 to the fourth cavity 434 increase sequentially.

[0113] The abutment between the first elastic member 441 and the pressure input part 420 is located in the third cavity 433. In order to stably connect the first elastic member 441 and the pressure input part 420, the hydraulic assembly 400 also includes a fixing ring 421, which is sleeved on the first elastic member 441 and the pressure input part 420, that is, the fixing ring 421 is filled in the third cavity 433 to avoid relative displacement between the first elastic member 441 and the pressure input part 420 during movement, thereby ensuring the stability and reliability of the hydraulic assembly 400. Among them, the fixing ring 421 can be an O-type fixing ring, and the type of the fixing ring 421 in this application is not specifically limited.

[0114] like Figure 3As shown, in some embodiments, in order to achieve axial positioning of the fixing ring 421, the hydraulic assembly 400 also includes an elastic retaining ring 422, which is filled into a positioning groove at the inner wall of the hydraulic housing 430 corresponding to the third cavity 433 to position the fixing ring 421 close to one side end of the pressure output part 440; the shoulders at the corresponding third cavity 433 and fourth cavity 434 in the hydraulic housing 430 cooperate to position the other side end of the fixing ring 421 away from the pressure output part 440.

[0115] In some embodiments of the present application, the radial dimension of one side end of the fixing ring 421 is reduced to form a positioning portion, which fits against the shoulders corresponding to the third cavity 433 and the fourth cavity 434 in the hydraulic housing 430, thereby positioning the side end of the fixing ring 421.

[0116] In some embodiments of the present application, in order to prevent liquid from leaking from the accommodating space through the gap between the pressure input part 420 and the hydraulic housing 430, the hydraulic component 400 also includes a first sealing ring 423, which is sleeved on the pressure input part 420 and is located in the fourth cavity 434. The first sealing ring 423 is circumferentially in contact with the fourth cavity 434 to block the liquid in the accommodating space.

[0117] Fig. 9 for Figure 3 The schematic diagram of the structure of the medium pressure output part. Figure 3 and 9 As shown, in some embodiments of the present application, the pressure output part 440 is configured with an annular groove 443 along its own circumference. In order to prevent the liquid from leaking from the accommodating space through the gap between the pressure output part 440 and the hydraulic housing 430, the hydraulic assembly 400 further includes a second sealing ring 442, which is sleeved on the pressure output part 440 and located in the annular groove 443 to block the liquid in the accommodating space. It can be understood that the outer wall of the second sealing ring 442 contacts the inner wall of the hydraulic housing 430.

[0118] like Figure 3 As shown, in the embodiment of the present application, in order to enhance the pressure of the liquid in the hydraulic housing 430, the hydraulic assembly 400 also includes a pre-tightening member 424, which is coaxially threadedly connected to the distal end of the hydraulic housing 430. In this way, the pressure input part 420 can be pushed through the thread to increase the pressure of the liquid and achieve a pre-tightening effect.

[0119] In some embodiments, the preload member 424 is provided with an internal thread extending along the axial direction, and the outer wall of the hydraulic housing 430 corresponding to the first cavity 431 is provided with an external thread extending along the axial direction of the hydraulic housing 430, and the internal thread of the preload member 424 cooperates with the external thread at the outer wall of the hydraulic housing 430 corresponding to the first cavity 431 to achieve a threaded connection between the two.

[0120] In the embodiment of the present application, in order to limit the moving range of the input member 426, the input member 426 is convexly provided along its own circumference to form a convex portion 4261, and the convex portion 4261 is located between the end of the hydraulic housing 430 on one side corresponding to the first cavity 431 and the shoulder 4241 of the preload member 424, and the convex portion 4261 can move axially along the input member 426 between the end of the hydraulic housing 430 on this side and the shoulder 4241 of the preload member 424.

[0121] Here, the installation principle of the hydraulic assembly 400 in the extension arm 3000 provided in the embodiment of the present application is explained.

[0122] The present application installs the hydraulic assembly according to the following method: after the first spherical joint 110, the pressure output part 440, the hydraulic housing 430 and the second sealing ring 442 are installed to form a housing space, liquid is injected into the housing space. In the embodiment of the present application, in order to facilitate the removal of bubbles in the liquid injected into the housing space, before the liquid is injected after the housing space is formed, the connection between the hydraulic housing 430 and the first housing 114 is loosened by one circle to increase the gap between the pressure output part 440 and the hydraulic housing 430. At this time, the liquid is injected into the housing space, and then the pressure input part 420 is repeatedly inserted into the hydraulic housing 430 with force two or three times to discharge the bubbles in the liquid. Then, when the bubbles in the liquid are exhausted, the hydraulic housing 430 is tightened with the first housing 114, and then the first elastic member 441 and the pressure input part 420 are installed in the hydraulic housing 430.

[0123] It should be noted that if the liquid is first injected into the accommodating space and then the first spherical joint 110 is installed, the hydraulic assembly 400 has the function of a force lever, which results in a relatively large force required to install the first spherical joint 110, and even a special clamping tool may be required to install the first spherical joint 110. In addition, when installing the first spherical joint 110, the first fixing ring 113 will be pressed toward the pressure output part 440, so that the comprehensive tolerance of the first ball head 112, the first fixing ring 113 and the pressure output part 440 is affected.

[0124] The installation method adopted in the embodiment of the present application ensures that the first spherical joint component 110 is easy to install by first installing the first spherical joint component 110, the pressure output part 440, the hydraulic housing 430 and the second sealing ring 442, and then injecting liquid into the accommodating space. In addition, this installation method also avoids the first fixing ring 113 being pressed toward the pressure output part 440 during installation, thereby solving the problem of the comprehensive tolerance being affected.

[0125] As mentioned above, the pressure input part 420 may include an input member 426 and a push rod 427. After loosening the connection between the hydraulic housing 430 and the first housing 114 by one turn, the liquid is injected. The input member 426 is inserted into the hydraulic housing 430 by repeated two or three times to discharge the bubbles in the liquid. After the bubbles in the liquid are discharged, the input member 426 and the first elastic member 441 are installed, which is conducive to shortening the axial dimension of the input member 426, thereby making the structure more compact. It can be understood that one end of the push rod 427 is in contact with the input member 426, and the other end is used to receive pressure to transmit the pressure through the input member 426 to the pressure output part 440.

[0126] Fig.10 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 1 , corresponding to the position relationship of the extension arm 3000 being locked in the folded state, in order to show the hinge relationship between the first rotating part 310 and the second rotating part 320, a certain gap is drawn at the hinge position. It can be understood that there is no gap at the hinge position in application. Fig.10 As shown, in order to realize the articulation between the connecting arms, taking the first arm 100 and the second arm 200 as an example, the extension arm 3000 also includes a rotating component 300, and the rotating component 300 includes a first rotating part 310 and a second rotating part 320. The first rotating part 310 and the second rotating part 320 are coaxially hinged, and the first arm 100 is connected to the first rotating part 310; the second arm 200 is connected to the second rotating part 320; so that when the first rotating part 310 and the second rotating part 320 rotate relative to each other, the relative angle between the first arm 100 and the second arm 200 is driven to change, and the angle change range is preferably between 0-180°.

[0127] In some embodiments of the present application, in order to achieve the hinge connection between the first rotating part 310 and the second rotating part 320, the rotating part 300 includes a first conical surface 311 and a second conical surface 312 that cooperate with each other, and the first rotating part 310 and the second rotating part 320 are mutually clamped through the first conical surface 311 and the second conical surface 312; wherein the first conical surface 311 is formed on the inner side or the outer side of one end of the first rotating part 310, and the second conical surface 312 is correspondingly formed on the outer side or the inner side of one end of the second rotating part 320.

[0128] In the embodiment of the present application, the first conical surface 311 is formed on the outer peripheral side of the first rotating part 310, and the second conical surface 312 is formed on the inner peripheral side of the second rotating part 320. The tapers of the first conical surface 311 and the second conical surface 312 match. When the first rotating part 310 and the second rotating part 320 rotate relative to each other, the first conical surface 311 and the second conical surface 312 rub against each other due to contact, and the component force of the friction force generated on the first conical surface 311 and the second conical surface 312 can prevent the first rotating part 310 and the second rotating part 320 from axially disengaging, thereby realizing the hinge between the first rotating part 310 and the second rotating part 320.

[0129] In an embodiment of the present application, in order to lock or unlock the first degree of freedom, the second degree of freedom and the third degree of freedom at one time, the extension arm 3000 also includes a locking assembly 500, which is used to apply pressure to the pressure input part 420 to lock or unlock the first spherical joint 110 and the second spherical joint 210; the locking assembly 500 is also used to drive the first rotating part 310 and the second rotating part 320 to be relatively stationary or rotated, so as to lock or unlock the relative rotation of the first arm 100 and the second arm 200.

[0130] Fig.11 for Fig.10 The structural diagram of the moving member 530 is shown in FIG. Fig.10 and Fig.11 As shown, in some embodiments of the present application, the locking assembly 500 includes a rotating member 510 and a moving member 530, the rotating member 510 is in transmission connection with the moving member 530, the moving member 530 is configured with a first inclined surface 531 which is at an angle with its own axial direction m, the distal end of the pressure input part 420 abuts against the first inclined surface 531, that is, the distal end surface of the pressure input part 420 has a second inclined surface 425 which is at an angle with its axial direction; when the rotating member 510 rotates, it drives the moving member 530 to move along the first direction or the second direction of its own axial direction m, so as to apply or release pressure to the pressure input part 420. Among them, the inclinations of the first inclined surface 531 and the second inclined surface 425 match.

[0131] Through the above solution, the first inclined surface 531 of the moving member 530 cooperates with the second inclined surface 425 of the pressure input portion 420 to form a wedge-shaped device. In this way, the moving member 530 is moved along the first direction ( Fig.10 middle to left) or the second direction ( Fig.10 The first movable member 530 moves to the right in order to apply or remove pressure to the pressure input portion 420. Based on the wedge principle, the force driving the first movable member 530 to move is less than the pressure applied to the pressure input portion 420, thereby further increasing the ability of the extension arm 3000 to provide a counter-torque force and reducing the external force required to apply to the tightening member 510 to lock the first spherical joint 110. This reduces the operating difficulty for diagnosticians and improves the operating convenience and flexibility.

[0132] Fig.12a for Figure 2 In other embodiments of the present application, the extension arm 3000 further includes a pusher 610 and a second elastic member 620; the second spherical joint 210 includes a second ball sleeve 211, a second ball head 212, a second fixing ring 213 and a second housing 214. The second elastic member 620 is sleeved on the pusher 610, and the second arm 200 is sleeved on the pusher 610, so that the second elastic member 620 abuts between the proximal surface of the second fixing ring 213 and the distal surface of the second arm 200.

[0133] In some embodiments of the present application, the second shell 214 is sleeved on the distal end of the second arm 200 and is coaxially connected to the second arm 200; the second ball sleeve 211 is coaxially fixedly connected to the second shell 214, and in this embodiment, it is connected by a thread. Optionally, the inner wall of the second shell 214 is provided with an internal thread extending along its own axis, and the outer wall of the second ball sleeve 211 is provided with an external thread along its own axis. The internal thread of the second shell 214 cooperates with the external thread of the second ball sleeve 211 to realize the fixed connection between the second shell 214 and the second ball sleeve 211; the second ball head 212 can rotate in the spherical space formed by the second ball sleeve 211 and the second fixing ring 213, and the second ball head 212 is also fixedly connected to the imaging device through the second connecting member 150, thereby realizing the rotational connection between the second arm 200 and the imaging device.

[0134] Figure 12b for Fig.12a In some embodiments of the present application, the second ball sleeve 211 is recessed along its own circumference to form a clamping portion 2111, the distal end surface of the clamping portion 2111 contacts the distal end surface of the second shell 214, and the clamping portion 2111 is clamped with the inner wall of the second shell 214, so that the second ball sleeve 211 and the second shell 214 are relatively locked.

[0135] In some embodiments of the present application, the distal outer peripheral surface of the second arm 200 is constructed with a third conical surface 201, and the inner wall of the second shell 214 is constructed with a fourth conical surface 2141 matching the third conical surface 201. The third conical surface 201 cooperates with the fourth conical surface 2141 to ensure stable assembly of the second shell 214 and the second arm 200.

[0136] In the embodiment of the present application, a notch 2112 is constructed at one end of the second ball sleeve 211 for extending into the second ball head 212, and its technical solution can refer to the implementation of the aforementioned first ball sleeve 111. Accordingly, the second ball sleeve 211 has a similar technical effect to the first ball sleeve 111.

[0137] In the embodiment of the present application, the technical solution of the second fixing ring 213 can refer to the implementation of the first fixing ring 113, that is, the proximal end surface of the second fixing ring 213 is also constructed as an annular arc surface.

[0138] Fig.13 for Fig.10 The structural diagram of the middle thrust block. Fig.10 and Fig.13 As shown, in some other embodiments of the present application, the locking assembly 500 also includes a thrust block 540, which is sleeved between the moving member 530 and the second rotating portion 320, and the thrust block 540 can rotate with the second rotating portion 320; the thrust block 540 is constructed with a third inclined surface 541 that forms an angle with the axial direction n, and one end of the pushing member 610 abuts against the third inclined surface 541 and the end is constructed as a fourth inclined surface 611 that forms an angle with its axis, wherein the inclination of the third inclined surface 541 matches that of the fourth inclined surface 611.

[0139] According to the above solution, when the moving member 530 moves in the first direction ( Fig.10 When the moving member 530 moves to the left along the axis of the moving member 530, the thrust block 540 is sleeved between the moving member 530 and the second rotating portion 320. Therefore, the moving member 530 transmits the extrusion to the second rotating portion 320 through the thrust block 540, so that the second rotating portion 320 and the first rotating portion 310 are pressed together to lock the first degree of freedom. Fig.10 When moving to the left in the center, the opposite is true to unlock the first degree of freedom.

[0140] In addition, the third inclined surface 541 of the thrust block 540 cooperates with the fourth inclined surface 611 of the push member 610 to form another wedge-shaped device, so that the moving member 530 moves along the first direction ( Fig.10 middle to left) or the second direction ( Fig.10 The first movable member 530 moves to the right in order to apply or remove pressure to the pushing member 610. Based on the wedge principle, the force driving the first movable member 530 to move is less than the pressure applied to the pushing member 610, thereby further increasing the ability of the extension arm 3000 to provide a counter-torque force and reducing the external force required to apply to the tightening member 510 to lock the second spherical joint 210, thereby reducing the operating difficulty for diagnosticians and medical personnel and improving the convenience and flexibility of operation.

[0141] The rotating member 510 , the moving member 530 and the thrust block 540 are all coaxially arranged, that is, the axial directions of the three are the same.

[0142] like Fig.10As shown, in some other embodiments of the present application, in order to realize the conversion of the rotation of the rotating member 510 into the movement of the moving member 530, the extension arm 3000 further includes a first transmission member 550 and a second transmission member 560, wherein the first transmission member 550 is fixedly connected to the rotating member 510 through the locking member 520, and the second transmission member 560 is fixedly connected to the moving member 530; the first transmission member 550 and the second transmission member 560 are threadedly driven. In this way, when the rotating member 510 rotates, one end of the locking member 520 is fixedly connected to the rotating member 510 through the fastener, and at the same time, the other end of the locking member 520 is rotationally connected to the second rotating part 320, so that the locking member 520 and the first transmission member 550 rotate together with the rotating member 510, and the second transmission member 560 drives the moving member 530 to move along the axial direction of the moving member 530 by threaded transmission.

[0143] like Fig.10 As shown, in the embodiment of the present application, in order to prevent the first transmission member 550 from frictionally rotating the second rotating part 320 and causing a reduction in transmission efficiency, the locking assembly 500 further includes a bearing 570, which is sleeved on the moving member 530 and located between the first transmission member 550 and the second rotating part 320, so as to reduce the friction loss between the first transmission member 550 and the second rotating part 320. The present application does not specifically limit the type of the bearing 570.

[0144] Fig.14a for Fig.10 A schematic diagram of the structure of the locking member; Fig.14b for Fig.10 Schematic diagram of the structure of the first transmission member. Fig.10 , Fig.14a and Fig.14b As shown, in some embodiments of the present application, the inner periphery of the locking member 520 is configured with at least one inner surface, which is inscribed on a certain arc surface of its inner periphery. In this embodiment, the inner surface is configured as two first planes 522 symmetrical about the axis; the outer periphery of the first transmission member 550 is configured with at least one outer surface, which is inscribed on a certain arc surface of its outer periphery. In this embodiment, the outer surface is configured as two second planes 551 symmetrical about its own axis. When the first transmission member 550 and the locking member 520 are coaxially connected inside and outside, the locking member 520 and the first transmission member 550 are coaxially synchronously rotated by the cooperation of the first plane and the second plane. The sizes of the first plane and the second plane match.

[0145] In some embodiments of the present application, in order to realize the relative rotation between the locking member 520 and the second rotating part 320, a rotating connecting member 521 is installed on one end surface of the locking member 520, and the rotating connecting member 521 extends into the connecting part 321 of the second rotating part 320, and the connecting part 321 is configured as a connecting groove extending along the inner circumference of the second rotating part 320, and the connecting groove can be formed by the inner shoulder of the second rotating part 320 and its inner wall. In this way, the movement of the locking member 520 and the rotating connecting member 521 is integrated, and when the rotating member 510 is rotated, the rotating connecting member 521 rotates together with the rotating member 510, and the relative rotation between the locking member 520 and the second rotating part 320 is realized by the cooperation between the rotating connecting member 521 and the connecting groove. In addition, the rotating connecting member 521 extends into the connecting part 321 of the second rotating part 320, which can realize the axial restriction of the locking member 520, and avoid the axial displacement of the locking member 520 when rotating and the friction loss with the surrounding devices. A rotation connection hole 523 is provided on one end surface of the locking member 520 close to the second rotation portion 320 , and the rotation connection hole 523 is used for installing the rotation connection member 521 .

[0146] In some embodiments of the present application, the rotating connector 521 can be configured as a fastener, which is installed in the rotating connection hole 523, and the fastener part is located in the connecting portion 321. The fastener includes but is not limited to a screw, such as a hexagon socket screw.

[0147] In some embodiments of the present application, the technical solution for the cooperation between the second transmission member 560 and the moving member 530 can refer to the implementation of the locking member 520 and the first transmission member 550 to reduce the tolerance between the second transmission member 560 and the moving member 530, reduce the assembly difficulty and improve the assembly yield.

[0148] Fig.14c for Fig.10 Schematic diagram of the local structure at C in the figure. Fig.14cAs shown, in some other embodiments of the present application, the second transmission member 560 and the moving member 530 are also fixed by a positioning ring 532 and a screw 533, and the end of the moving member 530 is provided with a fixing hole 534 extending along its own axial direction, and the screw 533 is passed through the positioning ring 532 and extends into the fixing hole 534; the positioning ring 532 abuts between the screw head of the screw 533 and the end face of the second transmission member 560 to fix the second transmission member 560 and the moving member 530. It should be noted that the screw 533 is selected here as a way to achieve a fastening connection between the second transmission member 560 and the moving member 530, and the embodiments of the present application do not specifically limit the type of fasteners for fastening the second transmission member 560 and the moving member 530. For example, if bolts are used to achieve a fastening connection between the second transmission member 560 and the movable member 530, then the bolts are passed through the positioning ring 532 and extend into the fixing hole 534; the nut is installed to the end of the bolt that does not extend to the fixing hole, and the positioning ring 532 abuts between the nut and the end face of the second transmission member 560 to fix the second transmission member 560 and the movable member 530.

[0149] Fig.15 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 2 , corresponding to the positional relationship of the extension arm 3000 being unlocked in the folded state; Fig.16 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 3 , corresponding to the positional relationship in which the extension arm 3000 is locked in the extended state; Fig.17 for Figure 1 or Figure 2 Schematic diagram of the structure of the middle locking assembly and the rotating part Figure 4 , which corresponds to the positional relationship when the extension arm 3000 is unlocked in the extended state. It should be noted that in order to show the hinged relationship between the first rotating part 310 and the second rotating part 320, a certain gap is drawn at the hinged position. It can be understood that there is no gap at the hinged position in application. In addition, it can be understood that when the extension arm 3000 is in the folded state or the extended state, the transmission principle of unlocking or locking the first degree of freedom, the second degree of freedom and the third degree of freedom by rotating the rotating member 510 is the same. Next, refer to Figures 10 to 17 , taking the connecting arm including the first arm 100 and the second arm 200 as an example, the working process of the extension arm is explained as a whole.

[0150] The rotating member 300 is in an initial state, at which the first degree of freedom, the second degree of freedom and the third degree of freedom are all unlocked. At this time, the moving member 530 is in a first position.

[0151] Locking phase (such as Fig.10As shown in the figure): After adjusting the extension arm 3000 to the target telescopic position, the rotating member 510 is rotated to drive the moving member 530 to move along the first direction p of its own axial direction. At this time, on the one hand, the moving member 530 applies a first thrust F1 along the first direction p to the pressure input part 420, which is converted into a first pressure F1' along the axial direction of the pressure input part 420 and directed to the pressure output part 440 after passing through the wedge device. The first pressure F1' is used to lock the first spherical joint 110, that is, the second degree of freedom. On the other hand, the moving member 530 applies a first locking force F1" along the second direction q to the pushing member 610, which is converted into a second pressure f2 along the axial direction of the pushing member 610 and directed to the second spherical joint member 210 after being converted through the wedge device. The second pressure f2 is used to lock the second spherical joint member 210, that is, the third degree of freedom. At the same time, the first thrust F1 exerted on the first inclined surface 531 and the first locking force F1" exerted on the third inclined surface 541 form a pair of opposite forces, thereby pressing the first rotating part 310 and the second rotating part 320 along the axial direction of the moving member 530 to lock the first degree of freedom.

[0152] exist Fig.16 The extension arm 3000 is in the extended state, and the technical solution of locking the first degree of freedom, the second degree of freedom and the third degree of freedom is the same as Fig.10 The implementation methods of locking the first degree of freedom, the second degree of freedom and the third degree of freedom when the middle extension arm 3000 is in the folded state are similar. Fig.16 The first thrust F1 not shown in the figure is converted into a first pressure F1' along the axial direction of the pressure input part 420 and directed to the pressure output part 440 by the wedge device, which can be referred to Fig.10 To understand the structure in .

[0153] Unlocking phase (such as Fig.15 As shown): before the extension arm 3000 needs to be adjusted to the new target telescopic position, the rotating member 510 is rotated in the opposite direction so that the moving member 530 moves along the second direction q of its own axial direction. At this time, on the one hand, the moving member 530 applies a second thrust F2 along the second direction q to the pressure input part 420, so that the pressure input part 420 approaches the moving member 530 along the first inclined surface 531 to relieve the first pressure F1', thereby the first spherical joint part 110, that is, the second degree of freedom. On the other hand, the moving member 530 applies a second locking force F2" along the first direction p to the pushing member 610 to relieve the second pressure f2, thereby unlocking the second spherical joint part 210, that is, the third degree of freedom. At the same time, the second thrust F2 received by the first inclined surface 531 and the second locking force F2" received by the third inclined surface 541 form a pair of opposite forces, so that the first rotating part 310 and the second rotating part 320 are no longer pressed along the axial direction of the moving member 530 to unlock the first degree of freedom.

[0154] exist Fig.17The extension arm 3000 is in the extended state, and the technical solution for unlocking the first degree of freedom, the second degree of freedom and the third degree of freedom is the same as Fig.15 The implementation methods of unlocking the first degree of freedom, the second degree of freedom and the third degree of freedom when the middle extension arm 3000 is in the folded state are similar. Fig.17 The moving member 530 not shown in the figure applies a second thrust F2 along the second direction q to the pressure input portion 420 to relieve the first pressure F1', which can be referred to Fig.15 To understand the structure in .

[0155] It can be concluded that by rotating the rotating member 510 to drive the moving member 530 to move, the first degree of freedom, the second degree of freedom and the third degree of freedom can be unlocked or locked at one time.

[0156] In the field of medical equipment, one end of the extension arm is clamped on the bed frame, and the other end is connected to the imaging device, and then the imaging device can be used for the patient by changing the extension degree of the extension arm. However, due to the wide variety of bed frames, it is difficult to achieve a firm installation of the extension arm on various types of bed frames, and to design the extension arm's extension degree to be suitable for various bed frames. In addition, the extension arm needs to be installed on the bed frame with a sterile protective cover, and the wires of the imaging device do not have a good fixing area, making the extension arm inconvenient to use. The positional relationship between the trolley and the patient in different treatment spaces varies, which limits the applicable treatment space of the extension arm and the trolley.

[0157] Fig.18 for Figure 1 Schematic diagram of the structure of the central rotating arm and the base; Fig.19 for Fig.18 Cross-sectional view of the rotating arm and base Figure 1 ; Fig. 20 for Figure 1 A perspective structural diagram of the rotating arm and base in FIG. Fig.21 for Fig. 20 The enlarged structural diagram at A in the figure shows the structural relationship between the first stopper and the second stopper. Figure 1 , Figures 18 to 21 As shown, the imaging device connecting component 1000 (hereinafter referred to as the connecting component 1000) also includes a base 10, which is fixedly connected to the trolley 2000. The base 10 and the rotating arm 30 are used to make the rotating arm 30 and the extension arm 3000 rotate as a whole around the first axis z of the trolley 2000; the proximal end of the rotating arm 30 is rotatably connected to the base 10, and the distal end of the rotating arm 30 is connected to the imaging device through the extension arm 3000; the base 10 and the rotating arm 30 are provided with a first locking portion 11 and a second locking portion 31 that cooperate with each other, and the first locking portion 11 and the second locking portion 31 are disengaged or engaged by operating the first locking portion 11 and the second locking portion 31, so that the rotating arm 30 can rotate or remain stationary relative to the base 10.

[0158] The rotational connection method between the rotating arm 30 and the base 10 is not limited. As one of the connection methods, when the base 10 extends along the first axis z, the rotating arm 30 can be sleeved on the base 10. The first axis z can be used to represent the vertical direction of the trolley 2000 in the working state.

[0159] Fig. 22 for Fig.18 An exploded view of the first angle of the middle rotating arm and base; Fig.23 for Fig.18 Exploded view of the second angle of the rotating arm and base. Figures 18 to 23 As shown, in some embodiments of the present application, the base 10 may further include a first sleeve portion 13, which extends along the first axis z; the rotating arm 30 also includes a second sleeve portion 33, which is sleeved on the first sleeve portion 13 to realize the rotation of the rotating arm 30 relative to the base 10 along the axial direction of the first sleeve portion 13, that is, the first axis z.

[0160] Among them, the first locking portion 11 can be arranged on the circumference of any point in the extension direction of the first sleeve portion 13; the position and size of the second locking portion 31 opened on the second sleeve portion 33 match the position and size of the first locking portion 11 opened on the first sleeve portion 13, so as to realize that the first locking portion 11 and the second locking portion 31 can be engaged or disengaged.

[0161] In some embodiments of the present application, the first stopper 11 can be configured as a first tooth arranged at intervals along the outer circumferential direction of the first sleeve portion 13, and the second stopper 31 can be configured as a second tooth arranged at intervals along the inner circumferential direction of the second sleeve portion 33 and matching the first tooth. When the first tooth and the second tooth are relatively close to or away from each other along the first axis z, the first tooth and the second tooth are engaged or disengaged.

[0162] In some embodiments, the first tooth and the second tooth extend along the axial direction of the first sleeve portion 13 and the second sleeve portion 33, respectively, that is, the direction from the root of the first tooth to the top of the tooth is parallel to the axial direction of the first sleeve portion 13, and the direction from the root of the second tooth to the top of the tooth is parallel to the axial direction of the second sleeve portion 33 (e.g. Fig. 20 ).

[0163] In some other embodiments of the present application, the first tooth and the second tooth extend radially of the first sleeve portion 13 and the second sleeve portion 33 respectively, that is, the direction from the root to the top of the first tooth is parallel to the radial direction of the first sleeve portion 13, and the direction from the root to the top of the second tooth is parallel to the radial direction of the second sleeve portion 33.

[0164] Through the above scheme, the base 10 is rotatably connected to the rotating arm 30, and the rotating arm 30 is rotated around the first axis z to realize that the extension arm 3000 is at different positions on the side of the trolley 2000, so that the imaging device can be adjusted to the target position on the side of the trolley 2000 according to the position and posture of the patient, thereby improving the applicability of the extension arm 3000 in different treatment spaces.

[0165] In addition, a first locking portion 11 is provided on the base 10, and a second locking portion 31 is provided on the rotating arm 30. By operating the first locking portion 11 and the second locking portion 31 to disengage or engage, the rotating arm 30 can be selectively rotated relative to the base 10, thereby avoiding the shaking of the extension arm 3000 relative to the base 10 due to the shaking of the end of the connecting component 1000, and enabling the connecting component 1000 to be stably located at the target position on the ring side of the trolley 2000, thereby improving the stability of the connecting component 1000 during use.

[0166] It should be noted that the roughness of the contact surface between the first sleeve portion 13 and the second sleeve portion 33 can be adjusted to prevent the connecting component 1000 from moving out of the target position due to shaking or movement of the end of the connecting component 1000 when the connecting component 1000 is located at the target position, so that the connecting component 1000 can be stably located at the target position.

[0167] Fig.24 for Fig.18 Cross-sectional view of the central rotating arm and base Figure 2 ; Fig.25 for Fig.24 The enlarged structural diagram at B in the figure shows the structure of the shifting component. Figures 19 to 25 As shown, in the embodiment of the present application, in order to make the connecting component 1000 stably located at the target position, the connecting component 1000 may also include a displacement assembly 40, which is used to drive the second locking portion 31 to move along the first axis z, so that the second locking portion 31 is away from or close to the first locking portion 11, thereby achieving the disengagement or engagement of the second locking portion 31 with the first locking portion 11.

[0168] In the embodiment of the present application, in order to realize the movement of the displacement assembly 40 along the first axis z, the displacement assembly 40 includes a floating joint 41, and the floating joint 41 is provided with an internal thread extending along the first axis z; the base 10 is provided with an external thread 12 extending along the first axis z; the floating joint 41 is sleeved on the base 10, and the internal thread of the floating joint 41 is transmission-connected with the external thread 12 of the base 10, so that when the floating joint 41 is rotated, the floating joint 41 can move along the first axis z. The floating joint 41 is fixedly connected to the rotating arm 30, so that the rotating arm 30 moves along the first axis z with the floating joint 41, thereby realizing that the second stopper 31 is close to or away from the first stopper 11.

[0169] Through the above scheme, the threaded transmission between the internal thread of the floating joint 41 and the external thread of the base 10 is utilized so that the floating joint 41 can move along the first axis z when it is rotated; and the floating joint 41 is fixedly connected to the rotating arm 30 so that the rotating arm 30 moves along the first axis z with the floating joint 41. Accordingly, when the rotating arm 30 moves along the first axis z, the second locking portion 31 moves along the first axis z to move away from or approach the first locking portion 11, so that the second locking portion 31 is disengaged from or engaged with the first locking portion 11.

[0170] It should be noted that the rotation direction and movement direction of the floating joint 41 can be configured as follows: when the floating joint 41 rotates clockwise, the floating joint 41 moves toward the direction close to the base 10 so that the first locking portion 11 is engaged with the second locking portion 31; when the floating joint 41 rotates counterclockwise, the floating joint 41 moves away from the base 10 so that the first locking portion 11 is disengaged from the second locking portion 31.

[0171] In the embodiment of the present application, when operating the first locking portion 11 to engage the second locking portion 31, since the gravity of the extension arm 3000 and the rotating arm 30 are both vertically downward, it is easier to rotate the floating joint 41; at the same time, it can also prevent the connecting component 1000 from shaking due to the gap, wherein such shaking is caused by the gap between the first locking portion 11 and the second locking portion 31 due to the floating joint 41 not being tightened.

[0172] In some embodiments of the present application, in order to save effort when operating the first locking portion 11 and the second locking portion 31 to disengage, the slope of the external thread 12 and the internal thread is configured to be smaller than a preset value to reduce the torque required to rotate the floating joint 41.

[0173] In the embodiment of the present application, when the first stopper 11 is operated to disengage from the second stopper 31, since the gravity of the first arm 100, the second arm 200 and the rotating arm 30 are all vertically downward, the rotating floating joint 41 needs to overcome the gravity of the first arm 100, the second arm 200 and the rotating arm 30, so the slope of the external thread 12 and the internal thread can be configured to be relatively gentle to reduce the torque required for rotating the floating joint 41. It can be understood that since the configuration of the thread slope is relatively gentle, the number of thread turns will increase, thereby affecting the efficiency of adjusting the connecting component 1000 and increasing the occupied space of the base 10. Therefore, the preset value can be determined based on the parameters of the connecting component 1000, and the present application does not impose specific restrictions on this.

[0174] In other embodiments of the present application, the non-friction surface between the floating joint 41 and the rotating arm 30 may be polished to reduce the roughness of the non-friction surface, or a lubricant may be added between the non-friction surfaces to reduce the torque required to rotate the floating joint 41. The present application does not impose any specific restrictions on this.

[0175] like Fig.24 and Fig.25 As shown, in some embodiments of the present application, the rotating arm 30 may further include a connecting portion 34, which may be formed by extending one end of the second sleeve portion 33 outward along the circumference of the second sleeve portion 33. The connecting portion 34 is provided with connecting holes at intervals along its own circumference, and the fastener passes through the connecting hole and extends to the side of the floating joint 41 to fasten the floating joint 41 and the rotating arm 30. The fastener may be a screw, and the embodiment of the present application does not specifically limit the fastener.

[0176] Fig.26 for Fig.25 Schematic diagram of the structure of the floating joint; Fig. 27 for Fig.25 Schematic diagram of the structure of the connector. Figure 25 to Figure 27 As shown, in the embodiment of the present application, in order to avoid shaking between the rotating arm 30 and the floating joint 41, the shifting assembly 40 may further include a connecting member 44, and the connecting member 44 is clamped between the floating joint 41 and the rotating arm 30. Optionally, the connecting member 44 is clamped between the floating joint 41 and the connecting portion 34, so that the floating joint 41 can more stably drive the rotating arm 30 to move along the first axis z.

[0177] In some embodiments of the present application, a fixing hole 44c is provided on the circumference of the connecting member 44, and a screw is inserted through the fixing hole 44c and extends to the connecting portion 34 of the rotating arm 30 to achieve a fixed connection between the connecting member 44, the floating joint 41 and the rotating arm 30. In other embodiments of the present application, the fixing hole 44c can be configured as a stepped hole, and the present application does not specifically limit the setting of the fixing hole.

[0178] like Fig.25 As shown, in the embodiment of the present application, in order to improve the operability of the displacement assembly 40, the displacement assembly 40 further includes a collar 45, which is sleeved on the floating joint 41 and the connecting member 44, and the collar 45 is fixedly connected to the floating joint 41; when the collar 45 is rotated, the floating joint 41 rotates with the collar 45, and the threaded transmission between the floating joint 41 and the base 10 is used to make the floating joint 41 move along the first axis z when rotating. In addition, by sleeve-arranging the collar 45 on the outside of the floating joint 41 and the connecting member 44, the floating joint 41 and the connecting member 44 can be hidden in the collar 45, making the appearance more concise.

[0179] In the embodiment of the present application, a connection end 413 is protruded on the circumference of the floating joint 41, and the connection ends 413 are evenly distributed. The connection ends 413 are constructed with screw holes corresponding to those on the ring 45. The ring 45 can be fixedly connected to the floating joint 41 by screwing bolts into the corresponding screw holes. The setting of the connection end 413 is only one of the implementation forms of the fixed connection between the floating joint and the ring. The embodiment of the present application does not specifically limit other fixing methods.

[0180] like Fig.26 and Fig. 27 As shown in some embodiments of the present application, the floating joint 41 includes a first portion 411 and a second portion 412, the inner diameters of the first portion 411 and the second portion 412 are consistent, and the outer diameter of the first portion 411 is smaller than the outer diameter of the second portion 412; the connecting member 44 includes a first portion 44a and a second portion 44b, the outer diameters of the first portion 44a and the second portion 44b are consistent, and the inner diameter of the first portion 44a is smaller than the inner diameter of the second portion 44b, and accordingly, the first portion 44a cooperates with the first portion 411, and the second portion 44b cooperates with the second portion 412, so that the first portion 44a of the connecting member 44 is clamped between the connecting end 413 of the floating joint 41 and the second portion 412, and the second portion 44b is sandwiched between the floating joint 41 and the connecting portion 34. In addition, by cooperating with the first portion 44a and the first portion 411, and the second portion 44b and the second portion 412, the contact area during the transmission of the floating joint 41 to the rotating arm 30 can be increased to achieve a labor-saving effect.

[0181] In the embodiment of the present application, the trolley 2000 includes a display 2100, an operating table 2200, and a frame 2300 on which a host is installed, which are arranged in sequence along the first axis z. In order to arrange the base 10 and the rotating arm 30 between the operating table 2200 and the frame 2300 without increasing the structural space of the trolley 2000, the collar 45 is convexly arranged outwardly along the first axis z to form an annular protrusion 451, and the annular protrusion 451 is used to be embedded in the receiving portion of the operating table 2200. The size of the receiving portion matches the annular protrusion 451, and the extension size of the receiving portion along the first axis z matches the moving area of ​​the collar 45 along the first axis z. In this way, the annular protrusion 451 can move in the receiving portion along the first axis z to realize the movement of the floating joint 41 along the first axis z.

[0182] like Fig. 22 and Fig.23As shown, in the embodiment of the present application, the base 10 also includes a mounting portion 14, and the mounting portion 14 is constructed to be formed by extending outward from one side end of the first sleeve portion 13 along the first axis z and the circumference of the first sleeve portion 13 at the same time. A mounting hole 141 extending along the first axis z is provided on the mounting portion 14, and a fastener is located in the mounting hole 141 and extends into the frame 2300 of the trolley 2000 to fix the base 10 and the trolley 2000. At this time, the first stop portion 11 can be formed at the intersection of the first sleeve portion 13 and the mounting portion 14. That is, the first stop portion 11 is formed by extending from the mounting portion 14 to a position corresponding to the circumference of the first sleeve portion 13 on one side of the first sleeve portion 13, and this extension can be an extension along the first axis z.

[0183] Fig.28 for Fig.18 In some examples of the present application, the rotating arm 30 can be made of SUS304 material, the yield strength of which is 206.81 Mpa. The extension arm 3000 is set as a rigid structure, and a force of 34.3 N is applied to the extension arm 3000 in a direction parallel to the first axis z, i.e., in the direction of gravity. Stress analysis is performed on the extension arm 3000 and the rotating arm 30, and the following results can be obtained: Fig.28 The stress effect is shown. A force of 34.3 N is applied to the extension arm 3000 in the direction of gravity to simulate the total load of the extension arm 3000 and the imaging device. In this example, the axial locking force of the floating joint 41 is 111 Newtons.

[0184] based on Fig.28 It can be seen that the stress at the maximum stress point on the rotating arm 30 is 16.3 MPa, which reaches a safety factor of 13 times compared to the yield strength of the rotating arm 30 of 206.81 MPa, and meets the industry requirement that the safety factor of the rotating arm 30 is not less than 4.

[0185] In the connecting component 1000 provided in the embodiment of the present application, the base 10 is rotatably connected to the rotating arm 30 through the above-mentioned scheme, and the rotating arm 30 is rotated around the first axis z to realize that the extension arm 3000 is in different positions on the ring side of the trolley 2000, so as to adjust the imaging device to the target position on the ring side of the trolley 2000 according to the position and posture of the patient, thereby improving the applicability of the extension arm 3000 in different treatment spaces.

[0186] In addition, a first locking portion 11 is provided on the base 10, and a second locking portion 31 is provided on the rotating arm 30. By operating the first locking portion 11 and the second locking portion 31 to disengage or engage, the rotating arm 30 can selectively rotate relative to the base 10, thereby avoiding the connecting component 1000 from shaking relative to the base 10 due to the shaking of the end of the connecting component 1000. The connecting component 1000 can be stably located at the target position on the ring side of the trolley 2000, thereby improving the stability of the connecting component 1000 during use.

[0187] Based on the same concept, an embodiment of the present application further provides a diagnosis and treatment device, including an imaging device, a trolley 2000 and the aforementioned extension arm 3000 , wherein the trolley 2000 is connected to the imaging device via the extension arm 3000 .

[0188] For example, the extension arm 3000 provided in the embodiment of the present application can support an imaging device weighing 1.5 kg when the extension length is 600 mm, the deflection can reach 5 mm, and the torque required to lock or unlock the extension arm is within 3 Newton meters Nm. In other embodiments of the present application, the extension length of the extension arm can reach 880 mm, and its own weight is only 1.2 kg. It can be seen that in the extension arm 3000 provided in the embodiment of the present application, single-handed positioning and locking can be achieved, and rotating the rotating member can unlock or lock the first degree of freedom, the second degree of freedom, and the third degree of freedom at one time.

[0189] In some examples, the rotating arm 30 is rotatably connected to the trolley 2000 along a first axis z of the trolley 2000 .

[0190] It should be noted that when the base 10 and the rotating arm 30 are arranged between the operating table 2200 and the frame 2300, the operating table is provided with a receiving portion, the size of the receiving portion matches the annular protrusion 451, and the extension size of the receiving portion along the first axis z matches the moving area of ​​the collar 45 along the first axis z. In this way, the annular protrusion 451 can move along the first axis z in the receiving portion to realize the movement of the floating joint 41 along the first axis z.

[0191] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0192] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. An imaging device connecting component, used to connect a trolley (2000) and support an imaging device, characterized in that: The imaging device connecting component (1000) comprises: A rotating arm (30) and an extension arm (3000), wherein the proximal end of the rotating arm (30) is connected to the trolley (2000), the proximal end of the extension arm (3000) is connected to the distal end of the rotating arm (30), and the distal end of the extension arm (3000) is connected to an imaging device; the rotating arm (30) is used to drive the extension arm (3000) to rotate or remain stationary around a first axis (z) relative to the trolley (2000); The extension arm (3000) comprises: A first arm (100) and a second arm (200), wherein the proximal end of the first arm (100) is connected to the distal end of the rotating arm (30), the distal end of the first arm (100) is hinged to the proximal end of the second arm (200), and the distal end of the second arm (200) is connected to an imaging device; A hydraulic assembly (400), the hydraulic assembly (400) comprising a pressure input portion (420), a hydraulic housing (430) and a pressure output portion (440), wherein the pressure output portion (440) is located at the proximal end of the hydraulic housing (430) and is rotatably connected to the first ball of the trolley (2000); the pressure input portion (420) extends into the distal end of the hydraulic housing (430) and is connected to the proximal end of the first arm (100); the pressure input portion (420) is subjected to pressure along the pressure input portion (420) toward the pressure output portion (440), and the pressure is applied to the first ball rotatably connected portion through the liquid in the hydraulic housing (430) and the pressure output portion (440); wherein the axial cross-sectional area of ​​the pressure input portion (420) is smaller than the axial cross-sectional area of ​​the pressure output portion (440).

2. The imaging device connecting component according to claim 1, characterized in that: The hydraulic assembly (400) further comprises a pre-tightening member (424), the pressure input portion (420) is passed through the pre-tightening member (424), and the pre-tightening member (424) is coaxially threadedly connected to the distal end of the hydraulic housing (430) to pre-tighten the pressure input portion (420).

3. The imaging device connecting component according to claim 2, characterized in that: The pressure input part (420) includes an input member (426), and the input member (426) is convexly provided along its own circumference to form a convex portion (4261), and the convex portion (4261) is located between the distal end of the hydraulic housing (430) and the shoulder (4241) of the preload member (424), and the convex portion (4261) can move along the axial direction of the input member (426) between the distal end of the hydraulic housing (430) and the shoulder (4241) of the preload member (424).

4. The imaging device connecting component according to claim 3, characterized in that: The pressure input part (420) also includes a push rod (427), and the push rod (427) is in abutment with the input member (426); the hydraulic assembly (400) also includes a first elastic member (441), and the first elastic member (441) is in abutment between the push rod (427) and the pressure output part (440), so that the input member (426) is always pressed against the contact surface of the push rod (427), and the contact surface is the surface of the push rod (427) used to contact the input member (426).

5. The imaging device connecting component according to claim 4, characterized in that: The hydraulic assembly (400) further comprises a fixing ring (421), wherein the fixing ring (421) is sleeved on the first elastic member (441) and the input member (426), and the outer wall of the fixing ring (421) contacts the inner wall of the hydraulic housing (430).

6. The imaging device connecting component according to claim 3, characterized in that: The hydraulic assembly (400) further comprises a first sealing ring (423), wherein the first sealing ring (423) is sleeved on the input member (426) and the outer wall of the first sealing ring (423) contacts the inner wall of the hydraulic housing (430) to block the liquid in the hydraulic housing (430).

7. The imaging device connecting component according to any one of claims 1 to 6, characterized in that: The hydraulic assembly (400) further comprises a second sealing ring (442), wherein the second sealing ring (442) is sleeved on the pressure output portion (440) and the outer wall of the second sealing ring (442) contacts the inner wall of the hydraulic housing (430).

8. The imaging device connecting component according to claim 1, characterized in that: The extension arm (3000) further comprises a locking assembly (500), wherein the locking assembly (500) comprises a rotating member (510) and a moving member (530), wherein the rotating member (510) is transmission-connected to the moving member (530), and the moving member (530) is provided with a first inclined surface (531) which is at an angle to its own axial direction (m), and the distal end portion of the pressure input portion (420) abuts against the first inclined surface (531); When the rotating member (510) rotates, it drives the moving member (530) to move along the first direction or the second direction of its own axial direction (m) so as to apply or release the pressure to the pressure input part (420).

9. The imaging device connecting component according to claim 8, characterized in that: The extension arm (3000) further comprises a first transmission member (550) and a second transmission member (560); the first transmission member (550) is fixedly connected to the rotating member (510), and the second transmission member (560) is fixedly connected to the moving member (530); the first transmission member (550) and the second transmission member (560) are threadedly transmitted.

10. The imaging device connecting component according to claim 9, characterized in that: The first transmission member (550) is fixedly connected to the rotating member (510) via a locking member (520); the inner periphery of the locking member (520) is structured with at least one inner connecting surface, which is inscribed in a certain arc surface of its own inner periphery; the outer periphery of the first transmission member (550) is structured with at least one outer connecting surface, which is inscribed in a certain arc surface of its own outer periphery; the first transmission member (550) and the locking member (520) rotate synchronously coaxially via the inner connecting surface and the outer connecting surface.

11. The imaging device connecting component according to claim 10, characterized in that: The extension arm (3000) further comprises a rotating component (300), wherein the rotating component (300) comprises a first rotating part (310) and a second rotating part (320), wherein the first rotating part (310) and the second rotating part (320) are coaxially hinged, wherein the first arm (100) is connected to the first rotating part (310); and the second arm (200) is connected to the second rotating part (320); so that when the first rotating part (310) and the second rotating part (320) rotate relative to each other, the relative angle between the first arm (100) and the second arm (200) is driven to change; The first rotating part (310) and the second rotating part (320) are both sleeved on the moving part (530), and the locking assembly (500) also drives the first rotating part (310) and the second rotating part (320) to rotate relative to each other or to remain stationary.

12. The imaging device connecting component according to claim 11, characterized in that: The rotating component (300) further comprises a first conical surface (311) and a second conical surface (312) that cooperate with each other, and the first rotating part (310) and the second rotating part (320) are mutually clamped via the first conical surface (311) and the second conical surface (312); The first conical surface (311) is formed on the inner circumference or outer circumference of one end of the first rotating part (310), and the second conical surface (312) is correspondingly formed on the outer circumference or inner circumference of one end of the second rotating part (320).

13. The imaging device connecting component according to claim 11, characterized in that: The extension arm (3000) further comprises a pushing member (610), the second arm (200) is sleeved on the pushing member (610), and the distal end of the pushing member (610) is rotatably connected to the second ball of the imaging device; The locking assembly (500) further comprises a thrust block (540), wherein the thrust block (540) is sleeved between the movable member (530) and the second rotating member (320), and the thrust block (540) can rotate along with the second rotating member (320); the thrust block (540) is provided with a third inclined surface (541) which forms an angle with the axial direction (n), and the proximal end portion of the pushing member (610) abuts against the third inclined surface (541).

14. The imaging device connecting component according to claim 11, characterized in that: A rotating connecting member (521) is installed on one end surface of the locking member (520), and the rotating connecting member (521) extends into the connecting portion (321) of the second rotating portion (320), so that the locking member (520) and the second rotating portion (320) can rotate relative to each other.

15. The imaging device connecting component according to claim 1, characterized in that: The imaging device connecting component (1000) further comprises a base (10), the base (10) being fixedly connected to the trolley (2000), and the base (10) extending along a first axis (z); the proximal end of the rotating arm (30) is sleeved on the base (10); The base (10) and the rotating arm (30) are provided with a first locking portion (11) and a second locking portion (31) that cooperate with each other, and the rotating arm (30) can be rotated or stationary around the first axis (z) relative to the base (10) by operating the first locking portion (11) and the second locking portion (31) to disengage or engage.

16. The imaging device connecting component (1000) according to claim 15, characterized in that: The connecting component (1000) further comprises a displacement assembly (40), wherein the displacement assembly (40) is used to drive the second locking portion (31) to move along the first axis (z) so as to disengage or engage the second locking portion (31) with the first locking portion (11).

17. The imaging device connecting component (1000) according to claim 16, characterized in that: The displacement assembly (40) comprises a floating joint (41), the floating joint (41) is provided with an internal thread extending along the first axis (z), and the base (10) is provided with an external thread (121) extending along the first axis (z); The floating joint (41) is sleeved on the base (10), and the internal thread of the floating joint (41) is transmission-connected to the external thread (121) of the base (10); the floating joint (41) is fixedly connected to the rotating arm (30), and when the floating joint (41) is rotated, it drives the rotating arm (30) to move in a direction close to or away from the first locking portion (11).

18. The imaging device connecting component (1000) according to claim 17, characterized in that: The displacement assembly (40) further comprises a connecting member (44), wherein the connecting member (44) is sandwiched between the floating joint (41) and the rotating arm (30).

19. The imaging device connecting component (1000) according to claim 18, characterized in that: The displacement assembly (40) further comprises a collar (45), wherein the collar (45) is sleeved on the floating joint (41) and the connecting member (44), and the collar (45) is fixedly connected to the floating joint (41); When the collar (45) is rotated, the floating joint (41) rotates with the collar (45) and moves along the first axis (z).

20. The imaging device connecting component (1000) according to claim 19, characterized in that: The collar (45) is protruded outwardly along the first axis (z) to form an annular protrusion (451), and the annular protrusion (451) is used to be located in the accommodating portion of the trolley (2000) and move along the first axis (z) in the accommodating portion.

21. The imaging device connecting component (1000) according to any one of claims 15 to 20, characterized in that: The base (10) comprises a mounting portion (14), the mounting portion (14) being provided with a mounting hole (141) extending along the first axis (z), and a fastener passing through the mounting hole (141) and extending into the trolley (2000) to fixedly connect the base (10) and the trolley (2000).

22. The imaging device connecting component (1000) according to any one of claims 17 to 20, characterized in that: The slopes of the external thread (121) and the internal thread are configured to be smaller than a preset value.

23. The imaging device connecting component (1000) according to any one of claims 15 to 20, characterized in that: The base (10) comprises a first sleeve connection portion (13) extending along the first axis (z), and the rotating arm (30) comprises a second sleeve connection portion (33), wherein the second sleeve connection portion (33) is sleeved on the first sleeve connection portion (13); The first stopper (11) is configured as first teeth arranged at intervals along the outer circumferential direction of the first sleeve portion (13), and the second stopper (31) is configured as second teeth arranged at intervals along the inner circumferential direction of the second sleeve portion (33) and matching the first teeth.

24. A diagnostic and treatment device, characterized in that: It comprises an imaging device, a trolley (2000), and an imaging device connecting component (1000) according to any one of claims 1 to 23, wherein the trolley (2000) is connected to the imaging device via the imaging device connecting component (1000).

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