Medical support arm structure

Abstract

The utility model discloses a medical support arm structure, which relates to the field of medical robots and comprises a cross arm component, a support arm component and a support arm component. One end of the spring arm assembly is rotationally connected with the other end of the cross arm assembly, a lock hook assembly is arranged in the middle of the spring arm assembly, a plug pin assembly is arranged on the top face of one end of the cross arm assembly, the lock hook assembly is detachably connected with the plug pin assembly, and the other end of the spring arm assembly is used for being connected with an NDI assembly; according to the medical supporting arm structure, the lock hook assembly and the plug pin assembly are arranged, it can be ensured that the relative positions of the spring arm assembly and the cross arm assembly are fixed, in addition, the rotating angle of the cross arm assembly on the stand column can also be fixed, in this way, it can be ensured that the NDI assembly hovers, and a medical robot can be used more conveniently.

Description

Technical Field

[0001] The utility model belongs to the field of medical robots, and more specifically, relates to a medical support arm structure. Background Art

[0002] The NDI component of the medical orthopedic robot needs to be moved before and during surgery. After moving, the NDI component must be able to stop quickly and reach a stable state. Therefore, a support arm can hover the NDI component at different positions. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the prior art and to provide a medical support arm structure, in which a locking hook assembly and a latch assembly are provided, which can ensure that the relative positions of the spring arm assembly and the cross arm assembly are fixed. In addition, the rotation angle of the cross arm assembly on the column can also be fixed, thereby ensuring that the NDI assembly is suspended, and the medical robot can be used more conveniently.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a medical support arm structure, comprising:

[0005] A cross arm assembly, one end of which is rotatably mounted on the end of the column;

[0006] A spring arm assembly, one end of which is rotatably connected to the other end of the cross arm assembly, a lock hook assembly is provided in the middle of the spring arm assembly, a latch assembly is provided on the top surface of one end of the cross arm assembly, the lock hook assembly and the latch assembly are detachably connected, and the other end of the spring arm assembly is used to connect to the NDI assembly.

[0007] Optionally, a retractable plunger is provided at the end of the column, a limit plate is provided at one end of the cross arm assembly, and a plug hole cooperating with the plunger is formed on the limit plate.

[0008] Optionally, the plunger is provided with a protruding end that cooperates with the plug hole. When the protruding end is rotated 90°, the protruding end is engaged with the hole wall of the plug hole. A first spring connected to the plunger is provided in the plug hole. The first spring applies a force to the plunger to move toward the plug hole in a natural state.

[0009] Optionally, a steering connector is provided between the cross arm assembly and the spring arm assembly, and the steering connector includes a horizontal limit ring and a reversing adapter. The cross arm assembly is connected to the horizontal limit ring, one end of the reversing adapter is inserted into the horizontal limit ring and fixed with a shaft retaining ring, and the other end of the reversing adapter is rotatably connected to one end of the spring arm assembly.

[0010] Optionally, a spike portion is provided on the inner wall of the horizontal limit ring, and a limit block is provided at one end of the reversing adapter, the limit block is clamped with the spike portion, and a needle bearing is also sleeved at one end of the reversing adapter, and the outer peripheral surface of the needle bearing is in contact with the inner wall of the horizontal limit ring.

[0011] Optionally, a plurality of cylindrical pins are provided at the other end of the cross arm assembly, and the cylindrical pins are evenly arranged along the circumference of the horizontal limiting ring, and the cylindrical pins are connected to the inner circumferential side wall of the horizontal limiting ring.

[0012] Optionally, the lock hook assembly includes a fixing sleeve and a lock hook, the fixing sleeve is arranged on the spring arm assembly, the lock hook is U-shaped, and both ends of the lock hook are connected to the fixing sleeve. The latch assembly includes a second spring, a button and a lock tongue, one end of the second spring is arranged on one end of the cross arm assembly, and the other end of the second spring is connected to the lock tongue. The button is connected to the lock tongue through a connecting rod. When the second spring is in a natural state, the second spring pushes the lock tongue out so that it is locked with the lock hook.

[0013] Optionally, the spring arm assembly includes a spring arm body and a connecting seat, the spring arm body is connected to one end of the connecting seat through a rotating shaft, the other end of the connecting seat is provided with a snap-in pin, a snap-in hole is provided on the NDI assembly, the snap-in pin is snap-fitted with the snap-in hole, and a plug-in hole is provided at the bottom of the connecting seat, and an adjustment handle is inserted into the plug-in hole.

[0014] Optionally, an operating hole is provided at the top of the connecting seat, and a connecting hole is also provided at the other end of the connecting seat. The operating hole, the plug-in hole and the connecting hole are connected to each other. A through pin is movably provided in the plug-in hole. A spring plate is provided in the operating hole. The spring plate is movably connected to one end of the through pin. When the spring plate is squeezed, the spring plate pushes the through pin out of the connecting hole and abuts against the NDI component.

[0015] Optionally, an operating portion is extended from the spring plate outside the operating hole.

[0016] The utility model provides a medical support arm structure, which has the following beneficial effects:

[0017] 1. The medical support arm structure is provided with a plunger on the column. When the plunger is inserted into the plug hole of the limit plate, the rotation angle of the cross arm assembly on the column can be fixed. When the cross arm assembly needs to be adjusted, the plunger can be pulled outward and then rotated 90°, so that the plunger can be clamped with the plug hole without external force, and the cross arm assembly can be adjusted at will;

[0018] 2. The medical support arm structure is provided with a steering connector between the cross arm assembly and the spring arm assembly, so that the spring arm assembly can rotate in the horizontal direction relative to the cross arm assembly, and the spring arm assembly can also perform pitch rotation along the vertical direction under the action of the reversing adapter. When the spring arm assembly rotates in the horizontal direction, the spike portion can limit the rotation angle of the reversing adapter, so that the NDI assembly can stop quickly after moving, and the cooperation of the horizontal limit ring and the reversing adapter can increase the moving range of the NDI assembly;

[0019] 3. In the medical support arm structure, an operation hole, a plug hole and a connecting hole are opened on the connecting seat, and the three are connected to each other. In this way, when the NDI component needs to be disassembled, it is only necessary to press the operating part of the spring plate, so that the spring plate will push the pin out of the connecting hole, thereby applying a force to the NDI component away from the connecting seat, so that the NDI component is separated from the connecting seat.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0022] Figure 1 A schematic structural diagram of a medical support arm structure according to an embodiment of the utility model is shown.

[0023] Figure 2 A schematic diagram of the connection between a column and a cross arm assembly according to an embodiment of the utility model is shown.

[0024] Figure 3 A schematic diagram showing a plunger inserted into a plug hole according to an embodiment of the utility model is shown.

[0025] Figure 4 A schematic diagram showing a plunger being pulled out from a plug hole according to an embodiment of the utility model is shown.

[0026] Figure 5 A schematic diagram showing the position of the plunger relative to the plug hole after the plunger is rotated 90° according to an embodiment of the utility model.

[0027] Figure 6 A schematic structural diagram of a steering connector according to an embodiment of the utility model is shown.

[0028] Figure 7A schematic diagram of the connection between a horizontal limit ring and a reversing adapter according to an embodiment of the utility model is shown.

[0029] Figure 8 Shows Figure 6 Internal cross-sectional view of .

[0030] Fig. 9 A structural schematic diagram of a lock hook assembly according to an embodiment of the utility model is shown.

[0031] Fig.10 A structural schematic diagram of a latch assembly according to an embodiment of the utility model is shown.

[0032] Fig.11 A schematic diagram showing the connection between a spring arm assembly and an NDI assembly according to an embodiment of the utility model is shown.

[0033] Description of reference numerals:

[0034] 1. Column; 2. Plunger; 3. Cross arm assembly; 301. First spring; 302. Limit plate; 303. Plug hole; 304. Cylindrical pin; 4. Spring arm assembly; 401. Spring arm body; 402. Connecting seat; 403. Snap pin; 404. Adjusting handle; 405. Operating hole; 406. Connecting hole; 407. Through pin; 408. Spring plate; 409. Operating part; 5. Lock hook assembly; 501. Lock hook; 502. Fixed sleeve; 6. NDI assembly; 7. Pin assembly; 701. Second spring; 702. Button; 703. Lock tongue; 8. Steering connector; 801. Horizontal limit ring; 802. Reversing adapter; 803. Shaft retaining ring; 804. Spike; 805. Limit block; 806. Needle roller bearing. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0036] The utility model provides a medical support arm structure, comprising:

[0037] A cross arm assembly, one end of which is rotatably mounted on the end of the column;

[0038] One end of the spring arm assembly is rotatably connected to the other end of the cross arm assembly. A lock hook assembly is provided in the middle of the spring arm assembly. A latch assembly is provided on the top surface of one end of the cross arm assembly. The lock hook assembly and the latch assembly are detachably connected. The other end of the spring arm assembly is used to connect with the NDI assembly.

[0039] Specifically, the medical support arm structure is provided with a column, a cross arm assembly and a spring arm assembly from top to bottom. The top end of the column is rotatably connected to one end of the cross arm assembly, the cross arm assembly rotates along the axis of the column, one end of the spring arm assembly is movably connected to the other end of the cross arm assembly, and the other end of the spring arm assembly is used to fix the NDI assembly. Through the connection structure between the spring arm assembly and the cross arm assembly, the spring arm assembly can be rotated in the horizontal direction to cooperate with the rotational movement of the cross arm assembly, so that the horizontal activity range of the spring arm assembly can be increased. The spring arm assembly can also be rotated in pitch, so that the NDI assembly can be adjusted in the height direction; with the cooperation of the lock hook assembly and the latch assembly, the spring arm assembly can be fixed to the column, so that the spring arm assembly and the cross arm assembly are connected as a whole, so that the NDI assembly is in a stable state.

[0040] Optionally, a retractable plunger is provided at the end of the column, a limit plate is provided at one end of the cross arm assembly, and a plug hole cooperating with the plunger is provided on the limit plate.

[0041] Optionally, the plunger is provided with a protruding end that cooperates with the plug hole. When the protruding end is rotated 90°, the protruding end is engaged with the hole wall of the plug hole. A first spring connected to the plunger is provided in the plug hole. The first spring applies a force to the plunger to move toward the plug hole in a natural state.

[0042] Specifically, in the medical support arm structure, one end of the cross arm assembly is rotatably set on the column. When the position of the NDI assembly needs to be adjusted through the cross arm assembly, the plunger can be pulled out from the limit plate, so that the cross arm assembly can be rotated around the axis of the column in the horizontal direction. When the rotation position of the cross arm assembly needs to be fixed, the plunger can be released, so that the plunger is inserted into the plug hole under the action of the first spring, thereby realizing the relative position locking of the cross arm assembly and the column.

[0043] In another embodiment, the cross-section of the plunger is rectangular, the plunger is connected to the column through a support, the plunger is movably arranged in the limiting hole of the support, the cross-section of the limiting hole is rectangular, the first spring is connected to the limiting hole, the other end of the first spring is connected to the protruding end of the plunger, and the protruding end of the plunger is penetrated into the first spring; when it is necessary to adjust the movable angle of the cross arm assembly, the plunger needs to be pulled out of the plug hole, and at the same time, the first spring is squeezed and shortened by the protruding end of the plunger, and then the plunger is rotated 90° and then released, so that the protruding end of the plunger does not match the hole position of the limiting hole, and the hole wall of the limiting hole blocks the plunger, which facilitates the adjustment of the cross arm assembly. When it is necessary to lock the movable angle of the cross arm assembly, the plunger is first rotated 90° in the opposite direction and then released, so that the protruding end of the plunger matches the hole position of the limiting hole. Under the action of the first spring, the protruding end of the plunger is inserted into the plug hole to achieve locking of the cross arm assembly and the column.

[0044] Optionally, a steering connector is provided between the cross arm assembly and the spring arm assembly, and the steering connector includes a horizontal limit ring and a reversing adapter. The cross arm assembly is connected to the horizontal limit ring, one end of the reversing adapter is inserted into the horizontal limit ring and fixed with a shaft retaining ring, and the other end of the reversing adapter is rotatably connected to one end of the spring arm assembly.

[0045] Specifically, a horizontal limit ring and an annular adapter are arranged between the cross arm assembly and the spring arm assembly. The horizontal limit ring enables the spring arm assembly to rotate in the horizontal direction and limits the rotation angle of the spring arm assembly. In addition to cooperating with the horizontal limit ring for horizontal rotation, the reversing adapter also cooperates with the spring arm assembly to realize pitch movement, so that the height of the NDI assembly can be adjusted. When the reversing adapter is inserted into the horizontal limit ring, the reversing adapter is fixed in the horizontal limit ring through a shaft retaining ring, thereby ensuring that the cross arm assembly and the spring arm assembly are firmly connected to each other.

[0046] Optionally, a spike portion is provided on the inner wall of the horizontal limit ring, a limit block is provided at one end of the reversing adapter, the limit block is clamped with the spike portion, and a needle bearing is also sleeved at one end of the reversing adapter, and the outer peripheral surface of the needle bearing is in contact with the inner wall of the horizontal limit ring.

[0047] Specifically, between the horizontal limit ring and the reversing adapter, the rotating shaft at one end of the reversing adapter is inserted into the horizontal limit ring, and a needle bearing is arranged between the two, so that the reversing adapter can drive the spring arm assembly to rotate freely in the horizontal direction; in addition, a spike portion is arranged on the inner side of the horizontal limit ring, and when the reversing adapter rotates a certain angle, the limit block of the reversing adapter will touch the spike portion, thereby limiting the rotation angle of the spring arm assembly. In addition to the spike portion, a needle bearing is also arranged on the side wall of the horizontal limit ring, and the spike portion and the needle bearing are arranged in an offset manner, so that the spring arm assembly can be freely rotated and the rotation angle of the spring arm assembly can be limited.

[0048] Optionally, a plurality of cylindrical pins are disposed at the other end of the cross arm assembly. The cylindrical pins are evenly arranged along the circumference of the horizontal limiting ring, and the cylindrical pins are connected to the inner circumferential side wall of the horizontal limiting ring.

[0049] Specifically, the cross arm assembly and the horizontal limit ring are connected by multiple cylindrical pins, one end of the cylindrical pin is pressed onto the cross arm assembly, and the other end of the cylindrical pin is connected to the horizontal limit ring, so as to ensure the horizontal position of the horizontal limit ring and ensure that the horizontal limit ring and one end of the reversing adapter are in a coaxial position; in addition, the horizontal limit ring can be rotated, and the horizontal limit ring can be rotated according to the limiting angle of the spring arm assembly, so that the position of the spike portion changes, thereby changing the locking position of the spring arm assembly.

[0050] Optionally, the lock hook assembly includes a fixing sleeve and a lock hook, the fixing sleeve is arranged on the spring arm assembly, the lock hook is U-shaped, and both ends of the lock hook are connected to the fixing sleeve. The latch assembly includes a second spring, a button and a lock tongue, one end of the second spring is arranged on one end of the cross arm assembly, and the other end of the second spring is connected to the lock tongue. The button is connected to the lock tongue through a connecting rod. When the second spring is in a natural state, the second spring pushes the lock tongue out so that it is locked with the lock hook.

[0051] Specifically, when the spring arm assembly does not need to be adjusted in pitch and in a small range of horizontal rotation, the spring arm assembly can be fixed on the cross arm assembly, which can reduce the difficulty of adjustment and only requires the cross arm assembly to be rotated and adjusted relative to the column; a locking hook is provided on the spring arm assembly, and the locking hook is provided on the downward side of the spring arm assembly, and a locking tongue is movably provided on the upper end surface of the cross arm assembly, and the locking tongue is connected with a second spring, so that when the spring arm assembly is pressed on one end of the cross arm assembly, the locking hook moves downward under the gravity of the spring arm assembly, and squeezes the locking tongue to squeeze the second spring, and when the locking hook crosses the locking tongue, the locking tongue continues to extend under the action of the second spring and is inserted into the U-shaped hole of the locking hook; when the spring arm assembly needs to be rotated horizontally or adjusted in pitch, a button can be pressed, and the button drives the locking tongue to squeeze the second spring through the connecting rod, so that the locking tongue will not block the upward movement of the locking hook, and the spring arm assembly can be separated from the cross arm assembly.

[0052] In one embodiment, a connecting rod connecting the button and the second spring is arranged below the lock tongue. When the lock hook and the lock tongue are locked, the lock hook is also located between the lock tongue and the connecting rod. In this way, when the connecting rod is driven by the button to squeeze the second spring, the lock hook can pass through the lock tongue in the retracted state, thereby realizing the separation of the spring arm assembly and the cross arm assembly.

[0053] Optionally, the spring arm assembly includes a spring arm body and a connecting seat, the spring arm body is connected to one end of the connecting seat through a rotating shaft, a snap-in pin is provided at the other end of the connecting seat, a snap-in hole is provided on the NDI assembly, the snap-in pin is snap-fitted with the snap-in hole, a plug-in hole is provided at the bottom of the connecting seat, and an adjustment handle is inserted into the plug-in hole.

[0054] Specifically, the other end of the spring arm assembly needs to be connected to the NDI assembly. In order to meet the requirements of adjusting the orientation of the NDI assembly, the spring arm body is connected to the connecting seat through a rotating shaft, so that the rotation of the NDI assembly can be realized, and an adjustment handle is provided at the bottom of the connecting seat. The NDI assembly can be rotated and adjusted by the adjustment handle to avoid direct contact between the hand and the surface of the NDI assembly, which would affect the positioning accuracy of the NDI assembly. The NDI assembly is connected to the connecting seat by plugging, a snap-in hole is provided on the back of the NDI assembly, and a snap-in pin is provided on the connecting seat. The corresponding connection between the snap-in pin and the snap-in hole can realize a quick and stable connection of the NDI assembly.

[0055] In one embodiment, two snap-in holes are opened on the NDI component, two snap-in pins are arranged on the connecting seat, and the snap-in pins are made of elastically deformable material, and the spacing between the two snap-in holes is smaller than the spacing between the two snap-in pins. When the NDI component is installed on the connecting seat, the snap-in pins are forced to be inserted into the snap-in holes, and the setting direction of the snap-in pins changes. In this way, the snap-in pins are fitted and fixed to the hole wall on one side of the two snap-in holes away from each other, so that the NDI component can be fixedly connected to the other end of the spring arm component.

[0056] Optionally, an operating hole is provided at the top of the connecting seat, and a connecting hole is also provided at the other end of the connecting seat. The operating hole, the plug-in hole and the connecting hole are connected to each other. A through pin is movably provided in the plug-in hole, and a spring plate is provided in the operating hole. The spring plate is movably connected to one end of the through pin. When the spring plate is squeezed, the spring plate pushes the through pin out of the connecting hole and abuts against the NDI component.

[0057] Optionally, the spring plate is provided with an operating portion extending outside the operating hole.

[0058] Specifically, when the NDI component needs to be removed from the spring arm component, the operating part of the spring plate can be pressed. Since the main part of the spring plate is arranged in the operating hole, the end provided with the operating part is squeezed. According to the lever principle, the end of the spring plate in contact with the through pin will be tilted up, so that the spring plate can push the through pin out toward the outside of the connecting hole, and the through pin pushes the NDI component outward. The force applied by the spring plate to the through pin is greater than the friction between the snap-in pin and the snap-in hole, so that the NDI component is removed.

[0059] Example

[0060] like Figures 1 to 11 As shown, the utility model provides a medical support arm structure, comprising:

[0061] A cross arm assembly 3, one end of which is rotatably arranged at the end of the column 1;

[0062] One end of the spring arm assembly 4 is rotatably connected to the other end of the cross arm assembly 3. A lock hook assembly 5 is provided in the middle of the spring arm assembly 4. A latch assembly 7 is provided on the top surface of one end of the cross arm assembly 3. The lock hook assembly 5 and the latch assembly 7 are detachably connected. The other end of the spring arm assembly 4 is used to connect with the NDI assembly 6.

[0063] In this embodiment, a retractable plunger 2 is provided at the end of the column 1 , a limit plate 302 is provided at one end of the cross arm assembly 3 , and a plug hole 303 cooperating with the plunger 2 is provided on the limit plate 302 .

[0064] In this embodiment, the plunger 2 is provided with a protruding end that cooperates with the plug hole 303. When the protruding end is rotated 90°, the protruding end is engaged with the hole wall of the plug hole 303. A first spring 301 connected to the plunger 2 is provided in the plug hole 303. The first spring 301 applies a force to the plunger 2 to move toward the plug hole 303 in a natural state.

[0065] In this embodiment, a steering connector 8 is arranged between the cross arm assembly 3 and the spring arm assembly 4. The steering connector 8 includes a horizontal limit ring 801 and a reversing adapter 802. The cross arm assembly 3 is connected to the horizontal limit ring 801. One end of the reversing adapter 802 is inserted into the horizontal limit ring 801 and fixed with a shaft retaining ring 803. The other end of the reversing adapter 802 is rotatably connected to one end of the spring arm assembly 4.

[0066] In this embodiment, a spike portion 804 is provided on the inner wall of the horizontal limit ring 801, and a limit block 805 is provided at one end of the reversing adapter 802, and the limit block 805 is clamped with the spike portion 804. A needle bearing 806 is also sleeved on one end of the reversing adapter 802, and the outer peripheral surface of the needle bearing 806 is in contact with the inner wall of the horizontal limit ring 801.

[0067] In this embodiment, a plurality of cylindrical pins 304 are disposed at the other end of the cross arm assembly 3 . The cylindrical pins 304 are evenly arranged along the circumference of the horizontal limiting ring 801 , and the cylindrical pins 304 are connected to the inner circumferential side wall of the horizontal limiting ring 801 .

[0068] In this embodiment, the lock hook assembly 5 includes a fixing sleeve 502 and a lock hook 501. The fixing sleeve 502 is arranged on the spring arm assembly 4. The lock hook 501 is U-shaped. Both ends of the lock hook 501 are connected to the fixing sleeve 502. The latch assembly 7 includes a second spring 701, a button 702 and a lock tongue 703. One end of the second spring 701 is arranged on one end of the cross arm assembly 2, and the other end of the second spring 701 is connected to the lock tongue 703. The button 702 is connected to the lock tongue 703 through a connecting rod. When the second spring 701 is in a natural state, the second spring 701 pushes the lock tongue 703 out so that it is locked with the lock hook 501.

[0069] In this embodiment, the spring arm assembly 4 includes a spring arm body 401 and a connecting seat 402. The spring arm body 401 is connected to one end of the connecting seat 402 through a rotating shaft 403. A snap-in pin 403 is provided at the other end of the connecting seat 402. A snap-in hole is provided on the NDI assembly 6. The snap-in pin 403 is snap-fitted with the snap-in hole. A plug-in hole is provided at the bottom of the connecting seat 402, and an adjustment handle 404 is inserted into the plug-in hole.

[0070] In this embodiment, an operating hole 405 is provided at the top of the connecting seat 402, and a connecting hole 406 is also provided at the other end of the connecting seat 402. The operating hole 405, the plug-in hole and the connecting hole 406 are connected to each other. A through pin 407 is movably provided in the plug-in hole. A spring plate 408 is provided in the operating hole 405. The spring plate 408 is movably connected to one end of the through pin 407. When the spring plate 408 is squeezed, the spring plate 408 pushes the through pin 407 out from the top of the connecting hole 406 and abuts against the NDI component 6.

[0071] In this embodiment, the spring plate 408 is provided with an operating portion 409 extending outside the operating hole 405 .

[0072] In summary, in the medical support arm structure, one end of the cross arm assembly 3 is rotatably set on the column 1, and the other end of the cross arm assembly 3 is connected to one end of the spring arm assembly 4 through a steering connector, so that the spring arm assembly 4 can be rotated in the horizontal plane, and the spring arm assembly 4 can also perform pitching motion, and the other end of the spring arm assembly 4 is connected to the NDI assembly 6; when the NDI assembly 6 needs to be rotated horizontally by a small amplitude, it can be fixed by the lock hook assembly 5 and the latch assembly 7, so that the spring arm assembly 4 and the cross arm assembly 3 are connected and fixed, and it is very easy to adjust the NDI assembly 6. Easy; when the spring arm assembly 4 needs to be rotated and adjusted separately, the horizontal limit ring 801 needs to be adjusted in advance, so that the spike portion 804 can limit the limit block 805, thereby limiting the rotation angle of the spring arm assembly 4 and realizing the rapid stop of the NDI assembly 6; when the direction of the NDI assembly 6 needs to be adjusted, it can be adjusted by adjusting the handle 404, and when the NDI assembly 6 needs to be removed, the operating portion 409 can be pressed, so that the spring plate 408 can push out the pin 407, so that the NDI assembly 6 can be separated from the connecting seat 402.

[0073] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A medical support arm structure, characterized in that: include: A cross arm assembly, one end of which is rotatably mounted on the end of the column; A spring arm assembly, one end of which is rotatably connected to the other end of the cross arm assembly, a lock hook assembly is provided in the middle of the spring arm assembly, a latch assembly is provided on the top surface of one end of the cross arm assembly, the lock hook assembly and the latch assembly are detachably connected, and the other end of the spring arm assembly is used to connect to the NDI assembly.

2. The medical support arm structure according to claim 1, characterized in that: A retractable plunger is disposed at the end of the column, a limiting plate is disposed at one end of the cross arm assembly, and a plug hole cooperating with the plunger is formed on the limiting plate.

3. The medical support arm structure according to claim 2, characterized in that: The plunger is provided with a protruding end that cooperates with the plug hole. When the protruding end is rotated 90°, the protruding end is engaged with the hole wall of the plug hole. A first spring connected to the plunger is provided in the plug hole. The first spring applies a force to the plunger to move toward the plug hole in a natural state.

4. The medical support arm structure according to claim 1, characterized in that: A steering connector is provided between the cross arm assembly and the spring arm assembly, and the steering connector includes a horizontal limit ring and a reversing adapter. The cross arm assembly is connected to the horizontal limit ring, one end of the reversing adapter is inserted into the horizontal limit ring and fixed with a shaft retaining ring, and the other end of the reversing adapter is rotatably connected to one end of the spring arm assembly.

5. The medical support arm structure according to claim 4, characterized in that: A spike portion is provided on the inner wall of the horizontal limit ring, a limit block is provided at one end of the reversing adapter, the limit block is clamped with the spike portion, and a needle bearing is also sleeved at one end of the reversing adapter, the outer peripheral surface of the needle bearing is in contact with the inner wall of the horizontal limit ring.

6. The medical support arm structure according to claim 5, characterized in that: A plurality of cylindrical pins are arranged at the other end of the cross arm assembly. The cylindrical pins are evenly arranged along the circumference of the horizontal limiting ring, and the cylindrical pins are connected to the inner peripheral side wall of the horizontal limiting ring.

7. The medical support arm structure according to claim 1, characterized in that: The lock hook assembly includes a fixing sleeve and a lock hook, the fixing sleeve is arranged on the spring arm assembly, the lock hook is U-shaped, and both ends of the lock hook are connected to the fixing sleeve. The latch assembly includes a second spring, a button and a lock tongue, one end of the second spring is arranged on one end of the cross arm assembly, the other end of the second spring is connected to the lock tongue, and the button is connected to the lock tongue through a connecting rod. When the second spring is in a natural state, the second spring pushes the lock tongue out so that it is locked with the lock hook.

8. The medical support arm structure according to claim 1, characterized in that: The spring arm assembly includes a spring arm body and a connecting seat, the spring arm body is connected to one end of the connecting seat through a rotating shaft, the other end of the connecting seat is provided with a snap-in pin, the NDI assembly is provided with a snap-in hole, the snap-in pin is snap-fitted with the snap-in hole, and a plug-in hole is provided at the bottom of the connecting seat, and an adjustment handle is inserted into the plug-in hole.

9. The medical support arm structure according to claim 8, characterized in that: An operating hole is provided at the top of the connecting seat, and a connecting hole is also provided at the other end of the connecting seat. The operating hole, the plug-in hole and the connecting hole are connected to each other. A through pin is movably provided in the plug-in hole, and a spring plate is provided in the operating hole. The spring plate is movably connected to one end of the through pin. When the spring plate is squeezed, the spring plate pushes the through pin out of the connecting hole to abut against the NDI component.

10. The medical support arm structure according to claim 9, characterized in that: The spring plate is provided with an operating portion extending outside the operating hole.

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