Support arm device and medical device

Abstract

According to the supporting arm device and the medical device, the supporting arm device comprises a connecting base and a spring tube, the connecting base comprises a first base body, a sleeve connecting piece and a pull rod connecting piece, the sleeve connecting piece is installed on the first base body, and the pull rod connecting piece is adjustably installed on the first base body and can move towards and away from the sleeve connecting piece during adjustment. The spring tube comprises a sleeve and an elastic assembly, and the first end of the sleeve is rotationally connected with the sleeve connecting piece around the first axis. The elastic assembly comprises a pull rod and a spring rod assembly, the pull rod comprises a first end and a second end, the first end of the pull rod is rotationally connected with the pull rod connecting piece around a second axis, the second end of the pull rod is rotationally connected with the spring rod assembly, and the spring rod assembly is installed in the sleeve; the spring rod assembly is used for providing balance force so that the spring tube can support the weight of the medical device. The sleeve connecting piece is provided with an avoiding structure to avoid the pull rod connecting piece and / or the pull rod so as to enlarge the moving range of the pull rod connecting piece and / or the rotating range of the pull rod.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a support arm device and a medical device. Background Art

[0002] Support arm devices are common mechanisms in operating rooms, used to support and suspend medical equipment such as surgical lights, monitors, and cameras. Since surgical lights, monitors, and cameras are different products with different weights, or the same product has different designs and different weights, in order to support medical equipment of different weights, the current approach adopted by the industry is to develop multiple support arm devices, each of which can support medical equipment of a certain weight range. For example, some support arm devices can support medical equipment of 7kg to 12kg, some support arm devices can support medical equipment of 12kg to 18kg, and some support arm devices can support medical equipment of 13.5kg to 21kg. Although this implementation can support medical equipment of different weights, the production management costs are greatly increased due to the large number of support arm device styles. Summary of the invention

[0003] In view of this, the present invention provides a support arm device and a medical device.

[0004] The support arm device provided in the first aspect of the present invention is used to support medical equipment, the support arm device comprises a connecting seat and a spring tube, the connecting seat comprises a first seat body, a sleeve connecting piece and a pull rod connecting piece, the sleeve connecting piece is mounted on the first seat body, the pull rod connecting piece is adjustably mounted on the first seat body and can move toward and away from the sleeve connecting piece when adjusted;

[0005] The spring tube comprises:

[0006] A sleeve, comprising a first end and a second end, wherein the first end of the sleeve is rotatably connected to the sleeve connector around a first axis;

[0007] An elastic force assembly, comprising a pull rod and a spring rod assembly, the pull rod comprising a first end and a second end, the first end of the pull rod being rotatably connected to the pull rod connector around a second axis, the second end of the pull rod being rotatably connected to the spring rod assembly, the spring rod assembly being installed in the sleeve, and the spring rod assembly being used to provide a balancing force so that the support arm device can support the weight of the medical device;

[0008] The sleeve connector is located on the rotation path of the pull rod;

[0009] Wherein, the sleeve connector is provided with an avoidance structure, which can avoid at least part of the pull rod connector to expand the movement range of the pull rod connector toward the sleeve connector; and / or, the avoidance structure can avoid at least part of the pull rod to expand the rotation range of the pull rod toward the sleeve connector.

[0010] The support arm device provided in the second aspect of the present invention is used to support medical equipment, the support arm device comprises a connecting seat and a spring tube, the connecting seat comprises a first seat body, a sleeve connecting piece and a pull rod connecting piece, the sleeve connecting piece and the pull rod connecting piece are installed on the first seat body;

[0011] The spring tube comprises:

[0012] A sleeve, comprising a first end and a second end, wherein the first end of the sleeve is rotatably connected to the sleeve connector around a first axis;

[0013] An elastic force assembly, comprising a pull rod and a spring rod assembly, the pull rod comprising a first end and a second end, the first end of the pull rod being rotatably connected to the pull rod connector around a second axis, the second end of the pull rod being rotatably connected to the spring rod assembly, the spring rod assembly being installed in the sleeve, and the spring rod assembly being used to provide a balancing force so that the support arm device can support the weight of the medical device;

[0014] The sleeve connector is located on the rotation path of the pull rod;

[0015] Wherein, a avoidance structure is provided on the sleeve connector, and during the rotation of the pull rod toward the sleeve connector, the avoidance structure can avoid at least a portion of the pull rod to expand the rotation range of the pull rod toward the sleeve connector.

[0016] The medical device provided in the third aspect of the present invention comprises:

[0017] Medical devices;

[0018] The support arm device described above;

[0019] Wherein, the medical device is installed at the second end of the sleeve.

[0020] It can be seen from the above technical solutions that the support arm device proposed in the first aspect of the present invention, firstly, by setting the pull rod connector to be movable toward or away from the sleeve connector along the first direction, by adjusting the position of the pull rod connector relative to the sleeve connector, the support arm device has different balancing forces, and can balance and support medical devices of different weights. Secondly, by setting an avoidance structure on the sleeve connector, the avoidance structure can avoid at least part of the pull rod connector and / or at least part of the pull rod. When the avoidance structure is used to avoid at least part of the pull rod connector, the avoidance structure allows the pull rod connector to have a larger adjustment space in the direction toward the sleeve connector, so that the support arm device can be used to balance and support medical devices with smaller weights. That is, the support arm device proposed in this embodiment can not only be used to support medical devices of different weights, but also expand the load support range of the support arm device as a whole. Users do not need to purchase different support arm devices for medical devices of different weights, which saves costs for customers. When the avoidance structure is used to avoid at least part of the pull rod, the avoidance structure allows the pull rod to have a larger rotation angle toward the sleeve connector, that is, the spring tube has a larger rotation depression angle, which can facilitate users to adjust, install and disassemble the medical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained like these accompanying drawings without paying any creative work.

[0022] Figure 1 is a schematic structural diagram of a first state of a support arm device provided in an embodiment of the present invention;

[0023] Figure 2 is a schematic cross-sectional view of a partial structure of a support arm device provided in one embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a sleeve connector, a tie rod connector and a tie rod provided in one embodiment of the present invention;

[0025] Figure 4 is a structural schematic diagram of a sleeve connector provided in one embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a pull rod connecting member according to an embodiment of the present invention moving to the highest point;

[0027] Figure 6 is a schematic diagram of a pull rod connecting member according to an embodiment of the present invention moving to the lowest point;

[0028] Figure 7 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0029] Figure 8 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0030] Fig. 9 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0031] Fig.10 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0032] Fig.11 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0033] Fig.12 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0034] Fig.13 is a structural schematic diagram of a sleeve connector provided in another embodiment of the present invention;

[0035] Fig.14 is a schematic cross-sectional view of a partial structure of a support arm device provided in another embodiment of the present invention;

[0036] Fig.15 is a schematic cross-sectional view of a partial structure of a support arm device provided in another embodiment of the present invention;

[0037] Fig.16 is a schematic structural diagram of a connecting socket from a first perspective according to an embodiment of the present invention;

[0038] Fig.17 is a structural schematic diagram of a connecting socket provided in an embodiment of the present invention from a second viewing angle;

[0039] Fig.18 is a schematic structural diagram of a sleeve provided in one embodiment of the present invention;

[0040] Fig.19 is a schematic diagram of assembling a sleeve connector and a restricting member according to another embodiment of the present invention;

[0041] Fig. 20 is a schematic diagram of the second state structure of the support arm device proposed in one embodiment of the present invention;

[0042] Fig.21 It is a structural schematic diagram of an assembly seat proposed in one embodiment of the present invention;

[0043] Fig. 22 It is a schematic diagram of the partial structure of a support arm device proposed in one embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figures 1 to 4 As shown, an embodiment of the present invention proposes a support arm device 100 for supporting medical equipment. The proposed support arm device 100 includes a connecting seat 10 and a spring tube 20. The connecting seat 10 includes a first seat body 11, a sleeve connector 12 and a pull rod connector 13. The sleeve connector 12 is non-rotatably mounted on the first seat body 11, and the pull rod connector 13 is adjustably mounted on the first seat body 11 and can move toward and away from the sleeve connector 12 within a first moving range along a first direction X when adjusted.

[0046] The two ends of the first movement range are the extreme positions where the pull rod connector 13 can move relative to the sleeve connector 12. For example, when the pull rod connector 13 moves toward the sleeve connector 12 to the end of the first movement range, the pull rod connector 13 cannot move further toward the sleeve connector 12. Conversely, when the pull rod connector 13 moves in a direction away from the sleeve connector 12 to the end of the first movement range, the pull rod connector 13 cannot move further in a direction away from the sleeve connector 12.

[0047] The spring tube 20 includes a sleeve 21 and an elastic component 22. The sleeve 21 includes a first end and a second end. The first end of the sleeve 21 is rotatably connected to the sleeve connector 12 around the first axis L1. The elastic component 22 includes a pull rod 221 and a spring rod component 222. The pull rod 221 includes a first end and a second end. The first end of the pull rod 221 is rotatably connected to the pull rod connector 13 around the second axis L2. The pull rod 221 can rotate toward and away from the sleeve connector 12 along the second direction Y within the first rotation range.

[0048] The two ends of the first rotation range are the extreme positions at which the pull rod 221 can rotate relative to the sleeve connector 12. For example, when the pull rod 221 rotates toward the sleeve connector 12 to the end of the first rotation range, the pull rod 221 cannot rotate further toward the sleeve connector 12. Conversely, when the pull rod 221 rotates in a direction away from the sleeve connector 12 to the end of the first rotation range, the pull rod 221 cannot rotate further in a direction away from the sleeve connector 12.

[0049] The second end of the pull rod 221 is rotatably connected to the spring rod assembly 222, which is installed in the sleeve 21. The spring rod assembly 222 is used to provide a balancing force so that the support arm device 100 can support the weight of the medical device. The sleeve connector 12 is located on the rotation path of the pull rod 221. The sleeve connector 12 is provided with an avoidance structure A. When the pull rod connector 13 moves to the extreme position of the first movement range toward the sleeve connector 12, the avoidance structure A can avoid at least part of the pull rod connector 13 to expand the movement range of the pull rod connector 13 toward the sleeve connector 12.

[0050] In one embodiment, the sleeve connector 12, and the weight of the medical device suspended by the spring rod assembly 222 and the second end of the sleeve 21 (if there is a suspended medical device) jointly limit the first rotation range of the pull rod 221, wherein the sleeve connector 12 limits the extreme position of the pull rod 221 rotating toward the sleeve connector 12, and the weight of the medical device suspended by the spring rod assembly 222 and the second end of the sleeve 21 limits the extreme position of the pull rod 221 rotating away from the sleeve connector 12.

[0051] In one embodiment, the support arm device 100 further includes an assembly seat 30, which is connected to the second end of the sleeve 21. Taking the application of the support arm device 100 in an operating room as an example, in a usage scenario, the support arm device 100 is directly or indirectly connected to the ceiling of the operating room through its connection seat 10, and the second end of the support arm device 100 is connected to medical devices such as surgical lights, displays, control boxes, and cameras through its assembly seat 30. The weights of medical devices such as surgical lights, displays, control boxes, and cameras are different. The user can adjust the position of the pull rod connector 13 relative to the sleeve connector 12 according to the weight of the medical device to be installed so that the spring tube 20 has a supporting force that matches the medical device, and then install the medical device on the assembly seat 30. Of course, the medical device can also be installed on the assembly seat 30 first, and then the position of the pull rod connector 13 relative to the sleeve connector 12 according to the weight of the medical device is adjusted so that the spring tube 20 has a supporting force that matches the medical device.

[0052] It should be noted that, the closer the distance between the first axis L1 and the second axis L2 is, the smaller the balancing force that the spring rod assembly 222 can form, and the support arm device 100 can support medical equipment with lighter weight. In the above embodiment, by providing an avoidance structure A on the sleeve connector 12, the pull rod connector 13 can be further moved toward the sleeve connector 12, so that the distance between the first axis L1 and the second axis L2 can be closer, so that the support arm device 100 can support medical equipment with lighter weight.

[0053] It should also be noted that the avoidance structure A is not limited to being used to avoid the pull rod connector 13. For example, in another embodiment, when the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, the avoidance structure A can avoid at least part of the pull rod 221 to expand the rotation range of the pull rod 221 toward the sleeve connector 12. In this embodiment, the pull rod 221 has a larger rotation angle toward the sleeve connector 12, that is, the spring tube 20 has a larger rotation depression angle, which can facilitate the user to adjust, install and disassemble the medical device. In another embodiment, the avoidance structure A is not only used to avoid the pull rod connector 13 to expand the movement range of the pull rod connector 13 toward the sleeve connector 12, but also used to avoid the pull rod 221 to expand the rotation range of the pull rod 221 toward the sleeve connector 12.

[0054] The support arm device 100 proposed in this embodiment, firstly, by setting the pull rod connector 13 to be movable toward or away from the sleeve connector 12 along the first direction X, by adjusting the position of the pull rod connector 13 relative to the sleeve connector 12, the support arm device 100 has different balancing forces, and can balance and support medical devices of different weights. Secondly, by setting the avoidance structure A on the sleeve connector 12, the avoidance structure A can avoid at least part of the pull rod connector 13 and / or at least part of the pull rod 221. When the avoidance structure A is used to avoid at least part of the pull rod connector 13, the avoidance structure A allows the pull rod connector 13 to have a larger adjustment space in the direction toward the sleeve connector 12, so that the support arm device 100 can be used to balance and support medical devices with smaller weights. That is, the support arm device 100 proposed in this embodiment can not only be used to support medical devices of different weights, but also expand the load support range of the support arm device 100 as a whole. Users do not need to purchase different support arm devices 100 for medical devices of different weights, which saves costs for customers. When the avoidance structure A is used to avoid at least part of the pull rod 221, the avoidance structure A allows the pull rod 221 to have a larger rotation angle toward the sleeve connector 12, that is, the spring tube 20 has a larger rotation depression angle, which can facilitate the user to adjust, install and disassemble the medical device.

[0055] like Figure 2As shown, in one embodiment, a limiting portion 211 is provided on the sleeve 21, and the spring rod assembly 222 includes a spring 2221, a first slider 2222 and a spring rod 2223. The spring 2221 includes a first end and a second end. The first end of the spring 2221 faces the connecting seat 10 and abuts against the limiting portion 211. The spring rod 2223 is penetrated by the spring 2221. The pull rod 221 is rotatably connected to the spring rod 2223. The first slider 2222 is connected to the spring rod 2223 and abuts against the second end of the spring 2221. It should be noted that the first slider 2222 is connected to the spring rod 2223. The first slider 2222 can be directly connected to the spring rod 2223, or the first slider 2222 can be movably mounted on the spring rod 2223. A pre-tightening bolt is arranged on the side of the first slider 2222 facing away from the spring 2221. The pre-tightening bolt is threadably matched with the spring rod 2223. The pre-tightening bolt presses against the first slider 2222. The first slider 2222 remains relatively motionless relative to the spring rod 2223 under the clamping of the pre-tightening bolt and the spring 2221. The specific arrangement can be determined according to actual design requirements.

[0056] Generally, after the support arm device 100 leaves the factory, the first slider 2222 is configured to pre-compress the spring 2221 to a certain extent. The reaction force generated by the compression of the spring 2221 causes the pull rod 221 to apply a pulling force to the pull rod connector 13. The component of the pulling force in the vertical direction acts on the sleeve 21 through the second slider 2224 to support the medical device installed on the assembly seat 30. When the user needs to install a heavier medical device on the assembly seat 30, the user adjusts the pull rod connector 13 away from the sleeve connector 12, the pull rod 221 pulls the spring rod 2223 to move toward the connection seat 10, the spring rod 2223 drives the first slider 2222 to move toward the connection seat 10, and the moving first slider 2222 further compresses the spring 2221. The reaction force provided by the spring 2221 increases the pulling force of the pull rod 221 toward the pull rod connector 13, and the increased pulling force increases the component of the force in the vertical direction, thereby supporting a heavier medical device. On the contrary, when the user adjusts the pull rod connection member 13 to move toward the sleeve connection member 12, the weight of the medical device that can be supported by the support arm device 100 becomes smaller.

[0057] like Figure 2As shown, in one embodiment, the limiting portion 211 is provided on the inner side wall of the sleeve 21, the spring 2221 is provided inside the sleeve 21, and the first slider 2222 can slide inside the sleeve 21 and abut against the inner side wall of the sleeve 21. In this embodiment, by setting the first slider 2222 to abut against the inner side wall of the sleeve 21, the first slider 2222 can play a role in positioning the spring rod 2223. It should be noted that the first slider 2222 can be set not to abut against the inner side wall of the sleeve 21, as long as the first slider 2222 can abut against the spring 2221, which can be determined according to actual design needs.

[0058] like Figure 2 As shown, in one embodiment, the spring rod assembly 222 further includes a second slider 2224, which is located between the second end of the pull rod 221 and the limiting portion 211 and connected to the spring rod 2223. The second slider 2224 can slide in the sleeve 21 and abut against the inner side wall of the sleeve 21. Similarly, by setting the second slider 2224 to abut against the inner side wall of the sleeve 21, the second slider 2224 can play a role in positioning the spring rod 2223. It should be noted that the first slider 2222 cooperates with the second slider 2224 to position the spring rod 2223 at the central axis of the sleeve 21, that is, the spring rod 2223 can only move forward and backward along the central axis of the sleeve 21.

[0059] like Figure 3 As shown, in one embodiment, the second axis L2 is parallel to the first axis L1. Of course, in some other embodiments, the second axis L2 and the first axis L1 may also be set to be non-parallel, which can be determined according to actual design requirements.

[0060] like Figure 4 As shown, in one embodiment, the sleeve connector 12 is a shaft, and the avoidance structure A includes a first groove 121 provided on the sleeve connector 12. When the pull rod connector 13 moves to the limit position of the first movement range toward the sleeve connector 12, the first groove 121 can accommodate at least part of the pull rod connector 13. That is, in this embodiment, the sleeve connector 12 accommodates at least part of the pull rod connector 13 through the first groove 121, so that the pull rod connector 13 can move a greater distance toward the sleeve connector 12. In the illustrated embodiment, the first groove 121 is located in the middle of the sleeve connector 12. Of course, the first groove 121 is not limited to being provided in the middle of the sleeve connector 12. In some other embodiments, the first groove 121 can also be provided at other positions of the sleeve connector 12, which can be determined according to actual design requirements.

[0061] It should be noted that the first groove 121 is not limited to being used to accommodate at least part of the pull rod connector 13. In another embodiment, when the pull rod 221 rotates to the limit position of the first rotation range toward the sleeve connector 12, the first groove 121 can accommodate at least part of the pull rod 221. That is, in this embodiment, the sleeve connector 12 accommodates at least part of the pull rod 221 through the first groove 121, so that the pull rod 211 can rotate toward the sleeve connector 12 at a larger angle.

[0062] like Figure 4 As shown, in one embodiment, the first groove 121 includes a first groove bottom wall 1211 and two first groove side walls 1212 respectively arranged at both ends of the first groove bottom wall 1211, the first groove bottom wall 1211 is arranged parallel to the first axis L1, the two first groove side walls 1212 are arranged at intervals along the direction of the first axis L1, and the spacing between the two first groove side walls 1212 is not less than the width of the corresponding part of the pull rod connector 13. When the pull rod connector 13 moves to the extreme position of the first moving range toward the sleeve connector 12, at least part of the pull rod connector 13 can enter the space defined by the first groove bottom wall 1211 and the two first groove side walls 1212.

[0063] like Figure 4 As shown, in one embodiment, the pull rod connector 13 moves toward and away from the sleeve connector 12 along the first direction X during adjustment, and the first direction X is perpendicular to the first groove bottom wall 1211. It should be noted that the first groove bottom wall 1211 is not limited to being set perpendicular to the first direction X. In some other embodiments, the first groove bottom wall 1211 can also be set at an acute angle or an obtuse angle with the first direction X, as long as the highest point of the first groove bottom wall 1211 in the first direction X is lower than the highest point of the cylinder where the sleeve connector 12 is located, so that the sleeve connector 12 can avoid the pull rod connector 13.

[0064] like Figure 4 As shown, in one embodiment, the avoidance structure A also includes a second groove 125 arranged in the sleeve connector 12, the second groove 125 includes a second groove bottom wall 1251 and two second groove side walls 1252 respectively arranged at both ends of the second groove bottom wall 1251, the second groove bottom wall 1251 is arranged parallel to the first axis L1, the second groove bottom wall 1251 and the first groove bottom wall 1211 are arranged to intersect and form an obtuse angle, the two second groove side walls 1252 are arranged at intervals along the direction of the first axis L1, and the spacing between the two second groove side walls 1252 is not less than the width of the corresponding part of the pull rod 221. When the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, at least part of the pull rod 221 can enter the space defined by the second groove bottom wall 1251 and the two second groove side walls 1252.

[0065] like Figure 6As shown, in one embodiment, the inclination angle of the second groove bottom wall 1251 is such that when the pull rod 221 rotates along the rotation path to approach the second groove bottom wall 1251, the corresponding surface of the pull rod 221 facing the second groove bottom wall 1251 is parallel to or in contact with the second groove bottom wall 1251.

[0066] like Figure 4 As shown, in one embodiment, the first groove 121 includes a first edge 1213 and an opposite second edge 1214, wherein the first edge 1213 is closer to the assembly seat 30 than the second edge 1214. The first edge 1213 is located on the rotation path of the pull rod 221. The avoidance structure A also includes a second groove 125, which is arranged at the first edge 1213 of the sleeve connector 12, and the second groove 125 runs through the straight line where the first edge 1213 is located. The second groove 125 is used to avoid the pull rod 221 to expand the rotation range of the pull rod 221 toward the sleeve connector 12. In this embodiment, the pull rod 221 has a larger rotation angle toward the sleeve connector 12, that is, the spring tube 20 has a larger rotation depression angle, which can facilitate the user to adjust, install and disassemble the medical device.

[0067] In the above embodiment, the avoidance structure A includes both the first groove 121 and the second groove 125. The first groove 121 is used to avoid the pull rod connector 13, and the second groove 125 is used to avoid the pull rod 221, so that the pull rod connector 13 has a larger adjustment space in the direction toward the sleeve connector 12, and the support arm device 100 can be used to balance and support medical equipment with a smaller weight, and the pull rod 221 has a larger rotation angle toward the sleeve connector 12, that is, the spring tube 20 has a larger rotation depression angle, which can facilitate users to adjust, install and disassemble the medical equipment. Specifically, as Figure 5 and Figure 6 As shown, by providing the first groove 121 and the second groove 125, the pull rod connector 13 can be partially embedded in the first groove 121 when it moves toward the sleeve connector 12 to the limit position, thereby achieving a larger movement range. Figure 6 It can be seen that the second groove 125 allows the pull rod 221 to tilt further downward, so that the spring tube 20 has a larger rotation depression angle.

[0068] It should be noted that, although the first groove 121 and the second groove 125 are provided at the same time in the embodiment of the present application, only the first groove 121 may be provided. Figure 7 As shown, or only the second groove 125 is provided, as Figure 8 It should be noted that when the highest point of the second groove 125 is lower than the highest point of the cylinder where the assembly end is located in the first direction X, the pull rod 221 and the pull rod connector 13 can be avoided.

[0069] like Fig. 9 As shown, in one embodiment, the avoidance structure A includes a first groove 121, the first groove 121 includes a first groove bottom wall 1211 and two first groove side walls 1212 respectively arranged at both ends of the first groove bottom wall 1211, the first groove bottom wall 1211 is arranged parallel to the first axis L1, the two first groove side walls 1212 are arranged at intervals along the direction of the first axis L1, and the spacing between the two first groove side walls 1212 is not less than the width of the corresponding part of the pull rod 221. When the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, at least part of the pull rod 221 can enter the space defined by the first groove bottom wall 1211 and the two first groove side walls 1212.

[0070] like Fig. 9 As shown, in one embodiment, the avoidance structure A also includes a second groove 125 arranged in the sleeve connector 12, the second groove 125 includes a second groove bottom wall 1251 and two second groove side walls 1252 respectively arranged at both ends of the second groove bottom wall 1251, the second groove bottom wall 1251 is arranged parallel to the first axis L1, the second groove bottom wall 1251 and the first groove bottom wall 1211 are arranged to intersect and form an obtuse angle, the two second groove side walls 1252 are arranged at intervals along the direction of the first axis L1, and the spacing between the two second groove side walls 1252 is not less than the width of the corresponding part of the pull rod connector 13. When the pull rod connector 13 moves to the extreme position of the first moving range toward the sleeve connector 12, at least part of the pull rod connector 13 can enter the space defined by the second groove bottom wall 1251 and the two second groove side walls 1252.

[0071] like Fig. 9 As shown, in one embodiment, the pull rod connector 15 moves toward and away from the sleeve connector 12 along the first direction X during adjustment, and the first direction X is perpendicular to the second groove bottom wall 1251. It should be noted that the second groove bottom wall 1251 is not limited to being set perpendicular to the first direction X. In some other embodiments, the second groove bottom wall 1251 can also be set at an acute angle or an obtuse angle with the first direction X, as long as the highest point of the second groove bottom wall 1251 in the first direction X is lower than the highest point of the cylinder where the sleeve connector 12 is located, so that the sleeve connector 12 can avoid the pull rod connector 13.

[0072] It should be noted that the sleeve connector 12 is not limited to the above-mentioned embodiment. For example, in another embodiment, Fig.10 As shown, the sleeve connector 12 is a shaft, and the avoidance structure A includes a side plane A1 arranged on the sleeve connector 12 . When the pull rod connector 13 moves toward the sleeve connector 12 , the side plane A1 is used to avoid at least part of the pull rod connector 12 .

[0073] like Fig.10 As shown, in one embodiment, when the pull rod 221 rotates toward the sleeve connector 12 , the side plane A1 is used to avoid at least a portion of the pull rod 221 .

[0074] like Fig.10 As shown, in one embodiment, the shaft member is a portion of a cylinder and is cut by a plane parallel to the first axis L1 to form a side plane A1, the side plane A1 extends from the first end of the shaft member to the second end of the shaft member, the cross-section of the cylinder is circular, and the central angle corresponding to the side plane A1 on the cross-section is less than 180 degrees.

[0075] It should be noted that the sleeve connector 12 is not limited to being set as a shaft, and the avoidance structure A is not limited to adopting the above-mentioned manner. For example, in another embodiment, Fig.11 , Fig.12 , Fig.14 and Fig.15 As shown, the sleeve connector 12 includes a first shaft section 122, a second shaft section 123 and a U-shaped section 124, and the first shaft section 122 and the second shaft section 123 are connected to the first seat body 11 and can extend along the first axis L1. The U-shaped section 124 is connected between. In the illustrated embodiment, the space enclosed by the U-shaped section 124 forms an avoidance structure A. When the pull rod connector 13 moves to the extreme position of the first movement range toward the sleeve connector 12, the avoidance structure A can accommodate at least part of the pull rod connector 13. It should be noted that in this embodiment, according to design requirements, by setting the depth of the recess of the U-shaped section 124, the pull rod connector 13 can move toward the sleeve connector 12 until the second axis L2 almost coincides with the first axis L1.

[0076] It should also be noted that the avoidance structure A is not limited to being used to avoid the pull rod connector 13. For example, in another embodiment, when the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, the avoidance structure A can accommodate at least a portion of the pull rod 221.

[0077] It should be noted that the avoidance structure A is not limited to being formed solely by the U-shaped segment 124. For example, in other embodiments, the U-shaped segment 124 can be jointly enclosed with the first shaft segment 122 and the second shaft segment 123 to form the avoidance structure A, that is, the U-shaped segment only includes the portion located below the first shaft segment 122 and the second shaft segment 123.

[0078] like Fig.12As shown, in one embodiment, the U-shaped section 124 forms an opening 101 between the first shaft section 122 and the second shaft section 123, and the width of the opening 101 is not less than the width of the corresponding portion of the pull rod connector 13. When the pull rod connector 13 moves toward the sleeve connector 12, it can enter the space enclosed by the U-shaped section 124 through the opening 101. In one embodiment, the width of the opening 101 is not less than the width of the corresponding portion of the pull rod 221. When the pull rod 221 rotates toward the sleeve connector 12, it can enter the space enclosed by the U-shaped section 124 through the opening 101.

[0079] like Fig.13 As shown, in one embodiment, the U-shaped section 124 includes a portion parallel to the first axis L1, and a third groove 129 is provided on the portion of the U-shaped section 124 parallel to the first axis L1. When the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, the third groove 129 can accommodate at least a portion of the pull rod 221. With this embodiment, the rotation angle of the pull rod 221 toward the U-shaped section 124 can be further expanded, so that the spring tube 20 has a larger rotation depression angle.

[0080] like Fig.14 As shown, in one embodiment, a recessed portion 2211 is provided on one side of the pull rod 221 facing the sleeve connector 12. When the pull rod 221 rotates to the limit position of the first rotation range facing the sleeve connector 12, the recessed portion 2211 can avoid at least a portion of the sleeve connector 12, so as to further expand the rotation range of the pull rod 221 toward the sleeve connector 12. In this embodiment, the pull rod 221 further has a larger rotation angle toward the sleeve connector 12, and the support arm device 100 has a larger rotation depression angle, which is convenient for users to adjust the medical device.

[0081] like Fig.14 As shown, in one embodiment, the pull rod 221 includes a matching section 2212, and the matching section 2212 is bent away from the sleeve connector 12 to form a recessed portion 2211, and its bending shape can be an arc, a curve, a broken line, etc. It should be noted that the recessed portion 2211 is not limited to being formed in the above manner. For example, in another embodiment, the matching section 2212 is a straight section, and a recess is provided on one side of the matching end facing the sleeve connector 12 to form the recessed portion 2211.

[0082] like Fig.15 As shown, in one embodiment, the tie rod connector 13 is provided with a threaded hole 131, and the connecting seat 10 also includes an adjusting bolt 14, which is threadedly matched with the tie rod connector 13. By rotating the adjusting bolt 14, the tie rod connector 13 can be driven to move toward or away from the sleeve connector 12 within the first moving range.

[0083] In one embodiment, a groove is provided at one end of the adjusting bolt 14, and the groove can be but is not limited to a slotted groove, a cross groove, or a hexagonal groove. In this way, when the adjusting bolt 14 needs to be rotated, the operator can insert a slotted screwdriver, a cross screwdriver, or a hexagonal wrench into the groove and rotate it to drive the adjusting bolt 14 to rotate.

[0084] like Fig.15 As shown, in one embodiment, the rod connector 13 is further provided with a guide hole 132, and the connection seat 10 further includes a guide column 15, which is mounted on the first seat body 11 and penetrates the guide hole 132, so that the rod connector 13 can only move toward or away from the sleeve connector 12. In this embodiment, the rod connector 13 is guided by providing the guide column 15, so that the rod connector 13 can move smoothly during the adjustment process.

[0085] like Fig.15 As shown, in one embodiment, the first seat body 11 includes a bottom connecting member 11a and a top connecting member 11b, the bottom end of the guide column 15 is connected to the bottom connecting member 11a, and the top end of the guide column 15 is connected to the top connecting member 11b, and the bottom connecting member 11a and the top connecting member 11b jointly define a first moving range of the pull rod connecting member 13, wherein the bottom connecting member 11a defines the extreme position of the pull rod connecting member 13 moving toward the sleeve connecting member 12, and the top connecting member 11b defines the extreme position of the pull rod connecting member 13 moving in a direction away from the sleeve connecting member 12.

[0086] It should be noted that limiting the first moving range of the tie rod connector 13 is not limited to the solution of using the above-mentioned bottom connector 11a and top connector 11b. For example, in some other embodiments, bumps can be provided at both ends of the guide column 15, and the two bumps jointly limit the first moving range of the tie rod connector 13. Alternatively, in some other embodiments, the top connector 11b limits the limit position of the tie rod connector 13 moving away from the sleeve connector 12, and the sleeve connector 12 limits the limit position of the tie rod connector 13 moving toward the sleeve connector 12. The specific method depends on the actual design requirements.

[0087] like Fig.15As shown, in one embodiment, the adjusting bolt 14 is located between the guide column 15 and the pull rod 221. It can be understood that the spring tube 20 has a tendency to pull the pull rod connector 13 to rotate downward around the first axis L1 due to its own weight plus the weight of the medical device, so that the inner side wall of the guide hole 132 will press the guide column 15, or the inner side wall of the threaded hole 131 will press the adjusting bolt 14. When the inner side wall of the threaded hole 131 presses the adjusting bolt 14, the operator needs a large operating force in the process of rotating the adjusting bolt 14, and the adjustment is inconvenient. In this embodiment, by arranging the adjusting bolt 14 between the guide column 15 and the pull rod 221, the outer side wall of the guide column 15 shares more pressure, and the outer side wall of the adjusting bolt 14 shares less pressure, so that the operator is more labor-saving in the process of rotating the adjusting bolt 14. Of course, it is also possible for the guide column 15 to be arranged between the adjusting bolt 14 and the pull rod 221, which can be determined according to actual design needs.

[0088] like Fig.15 , 16 As shown in Figures 17 and 17, in one embodiment, the first seat body 11 includes a first side plate 111 and a second side plate 112 arranged opposite to the first side plate 111, the first side plate 111 is provided with a first assembly hole 1111, the second side plate 112 is provided with a second assembly hole 1121, the sleeve connector 12 includes a first assembly end 126 and a second assembly end 127, the first assembly end 126 is inserted into the first assembly hole 1111, the second assembly end 127 is inserted into the second assembly hole 1121, the cross-sectional shape of the first assembly end 126 is non-circular, the shape of the first assembly hole 1111 is adapted to the cross-sectional shape of the first assembly end 126, and the first side plate 111 restricts the rotation of the first assembly end 126, so that the sleeve connector 12 cannot rotate relative to the first seat body 11. In this embodiment, when restricting the sleeve connector 12 from rotating relative to the first seat body 11, it can be achieved through structural design on the component, without the need to add other components, which has the effect of simplifying the mechanism and facilitating assembly.

[0089] It should be noted that the sleeve connector 12 is not limited to the above-mentioned embodiment to limit the rotation of the sleeve connector 12 relative to the first seat body 11. For example, in another embodiment, the cross-sectional shape of the second assembly end 127 is non-circular, the shape of the second assembly hole 1121 is matched with the cross-sectional shape of the second assembly end 127, and the second side plate 112 limits the rotation of the second assembly end 127, so that the sleeve connector 12 cannot rotate relative to the first seat body 11. That is, in this embodiment, the sleeve connector 12 is limited to rotate relative to the first seat body 11 by setting the cross-sectional shape of the second assembly end 127 to be non-circular, and the shape of the second assembly hole 1121 is matched with the cross-sectional shape of the second assembly end 127.

[0090] In another embodiment, the cross-sectional shape of the first assembly end 126 and the cross-sectional shape of the second assembly end 127 may be non-circular, so as to limit the sleeve connector 12 from rotating relative to the first seat body 11 .

[0091] like Figures 16 to 18 As shown, in one embodiment, the sleeve 21 includes a tube body 212 and two first ears 213, the tube body 212 includes a first end and a second end, and the first end of the tube body 212 faces the connecting seat 10. The two first ears 213 are arranged at the first end of the tube body 212, one of the first ears 213 is rotatably connected to the first assembly end 126, and the other first ear 213 is rotatably connected to the second assembly end 127.

[0092] In one embodiment, the first side plate 111 and the second side plate 112 are located between the two first ears 213. Of course, it is not limited to the above embodiment. For example, in another embodiment, the two first ears 213 are located between the first side plate 111 and the second side plate 112. In another embodiment, the first side plate 111, the second side plate 112, and the two first ears 213 are staggered. The specific arrangement can be determined according to actual design requirements.

[0093] like Fig.16 As shown, in one embodiment, the cross-sectional shape of the first assembly end 126 is D-shaped, and the cross-sectional shape of the second assembly end 127 is circular. It should be noted that the D-shape includes a plane segment and an arc segment, and the first assembly end 126 realizes a non-rotational fit with the first side plate 111 through the straight plane segment, and realizes a rotational fit with the first ear portion 213 through the arc segment. Of course, the cross-sectional shape of the first assembly end 126 is not limited to being set as a D-shape, and can also be other shapes. However, when the first assembly end 126 is other shapes, it is required that the cross-sectional profile of the first assembly end 126 includes an arc segment greater than half of an arc, or includes two arc segments arranged oppositely, or includes a plurality of arc segments arranged at intervals so that the first assembly end 126 and the first assembly hole 1111 cooperate to limit the sleeve connector 12 from rotating relative to the first seat body 11, and the first assembly end 126 and the first ear portion 213 form a rotational fit.

[0094] In addition, as described above, the cross-sectional shape of the second assembly end 127 can be set to be non-circular, and the shape of the second assembly hole 1121 can be matched with the cross-sectional shape of the second assembly end 127 to achieve the purpose of limiting the sleeve connector 12 from rotating relative to the first seat body 11. Therefore, in another embodiment, the cross-sectional shape of the first assembly end 126 and the cross-sectional shape of the second assembly end 127 can be swapped, that is, the cross-sectional shape of the first assembly end 126 is circular, and the cross-sectional shape of the second assembly end 127 is D-shaped. Similarly, the cross-sectional shape of the second assembly end 127 is not limited to being set to a D-shape, but can also be other shapes. However, when the second assembly end 127 is other shapes, the cross-sectional profile of the second assembly end 127 is required to include an arc segment greater than half of an arc, or include two arc segments arranged oppositely, or include a plurality of arc segments arranged at intervals, so that the second assembly end 127 and the second assembly hole 1121 can cooperate to limit the sleeve connector 12 from rotating relative to the first seat body 11, and the second assembly end 127 and the first ear 213 form a rotational fit.

[0095] It should be noted that, as described above, the sleeve connector 12 may be Figure 4 The shaft shown may also be Fig.12 The structure formed by the first shaft section 122, the second shaft section 123 and the U-shaped section 124 shown in FIG. Figure 4 When the sleeve connector 12 is as shown in FIG. Fig.12 In the structure formed by the first shaft segment 122 , the second shaft segment 123 and the U-shaped segment 124 shown, the first assembly end 126 is located at the end of the first shaft segment 122 , and the second assembly end 127 is the end of the second shaft segment 123 .

[0096] It should be noted that, in order to limit the sleeve connector 12 from rotating relative to the first seat body 11, it is not limited to the above-mentioned implementation. For example, in another embodiment, Fig.19 As shown, the sleeve connector 12 is provided with a first limiting portion 128, and the connecting seat 10 further includes a limiting member 16 installed on the first seat body 11, and the limiting member 16 includes a second limiting portion 161, and the first limiting portion 128 and the second limiting portion 161 cooperate to limit the sleeve connector 12 from rotating relative to the first seat body 11. That is, in this embodiment, in order to limit the sleeve connector 12 from rotating relative to the first seat body 11, an additional limiting member 16 is provided, and the second limiting portion 161 of the limiting member 16 cooperates with the first limiting portion 128 of the sleeve connector 12 to limit the sleeve connector 12 from rotating relative to the first seat body 11.

[0097] In one embodiment, the first limiting portion 128 is a limiting hole provided on the sleeve connector 12, and the second limiting portion 161 is a limiting column, which is passed through the limiting hole to limit the sleeve connector 12 from rotating relative to the first seat body 11. It should be noted that the positions of the limiting hole and the limiting column can be swapped, that is, the sleeve connector 12 is provided with a limiting column, and the limiting member 16 is provided with a limiting hole. The specific method can be determined according to actual design requirements. It should also be noted that the first limiting portion 128 and the second limiting portion 161 are not limited to the matching method of being set as a column hole. For example, in another embodiment, the first limiting portion 128 and the second limiting portion 161 can be set as the matching method of a protrusion and a groove.

[0098] like Figure 1 As shown, in one embodiment, the support arm device 100 further includes an assembly seat 30 and a rod 40, the second end of the sleeve 21 is rotatably connected to the assembly seat 30 around the third axis L3, and the assembly seat 30 is used to connect the medical device. The rod 40 includes a first end and a second end, the first end of the rod 40 is rotatably connected to the connecting seat 10 around the fourth axis L4, and the second end of the rod 40 is rotatably connected to the assembly seat 30 around the fifth axis L5. The sleeve 21, the rod 40, the connecting seat 10 and the assembly seat 30 are combined to form a parallelogram four-bar linkage mechanism. Specifically, on a plane perpendicular to the first axis L1, the sleeve 21, the rod 40, the line connecting the first axis L1 and the fourth axis L4, and the line connecting the third axis L3 and the fifth axis L5 are combined to form a parallelogram four-bar linkage mechanism. In this embodiment, a parallelogram four-bar linkage is formed by combining the sleeve 21, the rod 40, the connecting seat 10 and the assembly seat 30. According to the principle that the two opposite sides of the parallelogram always remain parallel, the assembly seat 30 only translates but does not rotate relative to the connecting seat 10 during the process of rising or falling, so that the medical equipment installed on the assembly seat 30 will not rotate relative to the horizontal axis during the process of adjusting the height direction.

[0099] In one embodiment, the rod 40 is provided with a cable management groove. The cable management groove is used to accommodate cables. In this embodiment, the components can be reasonably utilized without the need to add a cable management structure, so that the structure of the support arm device 100 is relatively compact. Moreover, by providing a cable management groove to organize and store the cables, the cables can be avoided from being cluttered.

[0100] like Fig.18 and Fig. 20As shown, in one embodiment, the first ear portion 213 is divided into a first extension section 2131 and a second extension section 2132 by the first axis L1, and the first extension section 2131 is connected to the tube body 212. The sleeve 21 also includes a second ear portion 214, which is provided at the second end of the tube body 212 and is rotatably connected to the assembly seat 30 around the third axis L3, and the second ear portion 214 is divided into a third extension section 2141 and a fourth extension section 2142 by the third axis L3, and the third extension section 2141 is connected to the tube body 212. Among them, the assembly seat 30 is provided with at least one limiting hole E, and the limiting hole E is used to insert the cylindrical tool 200. When the spring tube 20 is tilted downward relative to the connection seat 10 to a preset angle, the limiting hole E is exposed, and the cylindrical tool 200 is inserted into the limiting hole E and abuts against the top side of the fourth extension section 2142 to limit the spring tube 20 from rotating upward around the first axis L1. The “tilted downward”, “top side” and “rotated upward” mentioned above all refer to the orientation of the support arm device 100 in a normal use state.

[0101] It should be noted that the limiting hole E is not limited to being set in the assembly seat 30. For example, in another embodiment, the connection seat 10 is provided with at least one limiting hole E, and the limiting hole E is used to insert the cylindrical tool 200. When the spring tube 20 is tilted downward relative to the connection seat 10 and rotated to a preset angle, the limiting hole E is exposed. The cylindrical tool 200 is inserted into the limiting hole E and abuts against the bottom side of the second extension section 2132 to limit the spring tube 20 from rotating upward around the first axis L1. Among them, the "tilted downward", "bottom side" and "upward rotation" are all for the orientation of the support arm device 100 in normal use.

[0102] Taking the application of the support arm device 100 in the operating room as an example, in one usage scenario, the support arm device 100 is directly or indirectly connected to the ceiling of the operating room through the connecting seat 10, and the assembly seat 30 is used to connect medical equipment such as surgical lights, displays, control boxes and cameras. When it is necessary to install medical equipment on the connecting seat 10 or the medical equipment installed on the assembly seat 30 fails and needs to be repaired or replaced, the operator can pull the spring tube 20 so that the spring tube 20 is tilted downward relative to the connecting seat 10 to a preset angle and expose the limit hole E. At this time, the operator can insert a portable cylindrical tool 200, such as a screwdriver or an Allen wrench, into the limit hole E. The sleeve 21 cannot rotate upward under the restriction of the cylindrical tool 200, so that the spring tube 20 remains tilted downward, thereby facilitating the operator to install medical equipment on the connecting seat 10 or repair or replace the medical equipment installed on the assembly seat 30.

[0103] The support arm device 100 proposed in this embodiment is provided with a limiting hole E on the assembly seat 30 and / or the connection seat 10. When the spring tube 20 is tilted downward relative to the connection seat 10 and rotated to a preset angle to expose the limiting hole E, the operator can insert the cylindrical tool 200 carried with him into the limiting hole E to keep the spring tube 20 tilted downward, so that the operator can install the medical device on the connection seat 10 or repair or replace the medical device installed on the assembly seat 30. In this embodiment, a single operator can complete the installation of the medical device on the connection seat 10 or repair or replace the medical device installed on the assembly seat 30, which can save manpower and material resources.

[0104] like Fig.21 As shown, in one embodiment, the assembly seat 30 includes a second seat body 31 and a stopper 32, the second ear portion 214 is rotatably connected to the second seat body 31, the stopper 32 is arranged on the top side of the second ear portion 214, and is adjustably mounted on the second seat body 31 on the rotation path of the fourth extension section 2142, the stopper 32 is used to limit the fourth extension section 2142 from rotating upward around the third axis L3, and the stopper hole E is located below the stopper 32. The stopper 32 is used to limit the rotation of the spring tube 20 when the support arm device 100 is in normal use. It should be noted that the "top side", "upward rotation" and "below" are all for the orientation of the support arm device 100 in normal use.

[0105] like Fig.21 As shown, in one embodiment, the second seat body 31 includes two third side plates 311 spaced apart, and the stopper 32 is adjustably mounted on the two third side plates 311. The assembly seat 30 also includes an adjusting rod 33 and an adjusting bolt 34. The adjusting rod 33 is rotatably mounted between the two third side plates 311. The adjusting rod 33 is provided with a first screw hole or a first hole in a radial direction, and the stopper 32 is provided with a second screw hole. The adjusting bolt 34 is threadedly matched with the first screw hole or the first hole and the second screw hole. By rotating the adjusting bolt 34, the stopper 32 can be driven to adjust on the rotation path of the second extension section 2132.

[0106] like Fig.21 As shown, in one embodiment, the two third side plates 311 are provided with adjustment slots 3111, and the two ends of the stopper 32 are respectively inserted into the adjustment slots 3111 of the two third side plates 311 and can be adjusted along the adjustment slots 3111. When the position of the stopper 32 needs to be adjusted, the operator rotates the adjustment bolt 34, and the adjustment bolt 34 drives the stopper 32 to move along the adjustment slot 3111.

[0107] In one embodiment, a groove is provided at one end of the adjusting bolt 34, and the groove can be but is not limited to a slotted groove, a cross groove, or a hexagonal groove. In this way, when the adjusting bolt 34 needs to be rotated, the operator can insert a slotted screwdriver, a cross screwdriver, or a hexagonal wrench into the groove and rotate it to drive the adjusting bolt 34 to rotate.

[0108] like Fig.21 As shown, in one embodiment, the adjustment slot 3111 includes a first end C1 and a second end C2, the first end C1 is higher than the second end C2, and the height of the limiting hole E is lower than the second end C2.

[0109] like Fig.21 As shown, in one embodiment, the adjustment slot 3111 is in an arc shape with the third axis L3 as the center. Of course, the adjustment slot 3111 is not limited to an arc shape, but can also be a straight line or other shapes, which can be determined according to actual design requirements.

[0110] like Fig. 22 As shown, in one embodiment, the stopper 32 includes a first position 32a closest to the stopper hole E. When the stopper 32 is at the first position 32a, the spring tube 20 remains horizontal under the restriction of the stopper 32. Of course, the spring tube 20 does not necessarily remain horizontal under the restriction of the stopper 32, and may also be at a certain angle relative to the horizontal plane, which can be determined according to actual design requirements.

[0111] like Figures 1 to 17 As shown, the embodiment of the present invention also proposes a support arm device 100 for supporting medical equipment. The proposed support arm device 100 includes a connection seat 10 and a spring tube 20. The connection seat 10 includes a first seat body 11, a sleeve connector 12 and a pull rod connector 13. The sleeve connector 12 and the pull rod connector 13 are installed on the first seat body 11. The spring tube 2221 includes a sleeve 21 and an elastic component 22. The sleeve 21 includes a first end and a second end. The first end of the sleeve 21 is rotatably connected to the sleeve connector 12 around a first axis L1. The elastic component 22 includes a pull rod 221 and a spring rod component 222. The pull rod 221 includes a first end and a second end. The first end of the pull rod 221 is rotatably connected to the pull rod connector 13 around a second axis L2. The second end of the pull rod 221 is rotatably connected to the spring rod component 222. The spring rod component 222 is installed in the sleeve 21. The spring rod component 222 is used to provide a balancing force so that the spring tube 20 can balance the weight of the medical equipment. The sleeve connector 12 is located on the rotation path of the pull rod 221. The sleeve connector 12 is provided with an avoidance structure A. When the pull rod 221 rotates toward the sleeve connector 12, the avoidance structure A can avoid at least part of the pull rod 221 to expand the rotation range of the pull rod 221 toward the sleeve connector 12. Optionally, the avoidance structure A includes: Figure 8 The second groove 125 is shown.

[0112] The support arm device 100 proposed in this embodiment, by setting a second groove 125 on the sleeve connector 12 for avoiding the pull rod 221, allows the pull rod 221 to have a larger rotation angle toward the sleeve connector 12, that is, the spring tube 20 has a larger rotation depression angle, which can facilitate users to adjust, install and repair the medical equipment.

[0113] like Figure 4 As shown, in one embodiment, the sleeve connector 12 is a shaft, and the avoidance structure A includes a groove provided in the sleeve connector 12 , and when the pull rod 221 rotates toward the sleeve connector 12 , the groove can accommodate at least a portion of the pull rod 221 .

[0114] like Fig.10 As shown, in one embodiment, the sleeve connector 12 is a shaft, and the avoidance structure A includes a side plane A1 arranged on the sleeve connector 12 and parallel to the first axis L1, and the side plane A1 extends from the first end of the shaft to the second end of the shaft. When the pull rod 221 rotates toward the sleeve connector 12, the side plane A1 is used to avoid at least a portion of the pull rod 221.

[0115] like Fig.12 As shown, in one embodiment, the sleeve connector 12 includes a first shaft segment 122, a second shaft segment 123 and a U-shaped segment 124, the first shaft segment 122 and the second shaft segment 123 are connected to the first seat body 11, and the U-shaped segment 124 is connected between the first shaft segment 122 and the second shaft segment 123; the space enclosed by the U-shaped segment 124 forms an avoidance structure A, or the U-shaped segment 124 and the first shaft segment 122 and the second shaft segment 123 jointly enclose an avoidance structure A.

[0116] like Fig.14 As shown, in one embodiment, a recessed portion 2211 is provided on one side of the pull rod 221 facing the sleeve connector 12. When the pull rod 221 rotates to the extreme position of the first rotation range toward the sleeve connector 12, the recessed portion 2211 can avoid at least a portion of the sleeve connector 12 to further expand the rotation range of the pull rod 221 toward the sleeve connector 12.

[0117] In one embodiment, the pull rod 221 includes a matching section 2212 , and the matching section 2212 is bent away from the sleeve connector 12 to form a recessed portion 2211 , and the bending shape thereof can be an arc, a curve, a broken line, etc.

[0118] The other structures, connection relationships and beneficial effects of the support arm device 100 proposed in this embodiment can refer to the above embodiments and will not be described in detail here.

[0119] The embodiment of the present invention further provides a medical device, which includes a medical device and the above-mentioned support arm device 100, wherein the medical device is installed at the second end of the sleeve 21. Optionally, the medical device is at least one of a surgical lamp, a display, a control box and a camera.

[0120] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A support arm device for supporting medical equipment, characterized in that: The support arm device includes a connecting seat and a spring tube, and the connecting seat includes a first seat body, a sleeve connecting piece and a pull rod connecting piece. The sleeve connector is mounted on the first seat body, and the pull rod connector is adjustably mounted on the first seat body and can move toward and away from the sleeve connector when adjusted; The spring tube comprises: A sleeve, comprising a first end and a second end, wherein the first end of the sleeve is rotatably connected to the sleeve connector around a first axis; An elastic force assembly, comprising a pull rod and a spring rod assembly, the pull rod comprising a first end and a second end, the first end of the pull rod being rotatably connected to the pull rod connector around a second axis, the second end of the pull rod being rotatably connected to the spring rod assembly, the spring rod assembly being installed in the sleeve, and the spring rod assembly being used to provide a balancing force so that the support arm device can support the weight of the medical device; The sleeve connector is located on the rotation path of the pull rod; Wherein, the sleeve connector is provided with an avoidance structure, which can avoid at least part of the pull rod connector to expand the movement range of the pull rod connector toward the sleeve connector; and / or, the avoidance structure can avoid at least part of the pull rod to expand the rotation range of the pull rod toward the sleeve connector.

2. The support arm device according to claim 1, characterized in that: The second axis is parallel to the first axis.

3. The support arm device according to claim 1, characterized in that: The sleeve connector is a shaft, and the avoidance structure includes a first groove arranged on the sleeve connector. When the pull rod connector moves to an extreme position toward the sleeve connector, the first groove can accommodate at least a portion of the pull rod connector, and / or when the pull rod rotates to an extreme position toward the sleeve connector, the first groove can accommodate at least a portion of the pull rod.

4. The support arm device according to claim 3, characterized in that: The first groove includes a first groove bottom wall and two first groove side walls respectively arranged at both ends of the first groove bottom wall, the first groove bottom wall is arranged parallel to the first axis, the two first groove side walls are arranged at intervals along the direction of the first axis, the spacing between the two first groove side walls is not less than the width of the corresponding parts of the pull rod connector, and when the pull rod connector moves to the extreme position toward the sleeve connector, at least part of the pull rod connector can enter the space defined by the first groove bottom wall and the two first groove side walls.

5. The support arm device according to claim 4, characterized in that: The avoidance structure also includes a second groove arranged in the sleeve connector, the second groove includes a second groove bottom wall and two second groove side walls respectively arranged at both ends of the second groove bottom wall, the second groove bottom wall is arranged parallel to the first axis, the second groove bottom wall and the first groove bottom wall are intersected and formed with an obtuse angle, the two second groove side walls are spaced apart along the direction of the first axis, the spacing between the two second groove side walls is not less than the width of the corresponding part of the pull rod, and when the pull rod is rotated to the extreme position toward the sleeve connector, at least part of the pull rod can enter the space defined by the second groove bottom wall and the two second groove side walls.

6. The support arm device according to claim 4 or 5, characterized in that: The pull rod connector moves toward and away from the sleeve connector along a first direction during adjustment, and the first direction is perpendicular to the bottom wall of the first groove.

7. The support arm device according to claim 5, characterized in that: The inclination angle of the second groove bottom wall is such that when the pull rod rotates along the rotation path to approach the second groove bottom wall, the corresponding surface of the pull rod facing the second groove bottom wall is parallel to or in contact with the second groove bottom wall.

8. The support arm device according to claim 4, characterized in that: The first groove includes a first edge, and the first edge is located on the rotation path of the pull rod; the avoidance structure also includes a second groove arranged at the first edge, and the second groove passes through the straight line where the first edge is located.

9. The support arm device according to claim 3, characterized in that: The first groove includes a first groove bottom wall and two first groove side walls respectively arranged at both ends of the first groove bottom wall, the first groove bottom wall is arranged parallel to the first axis, the two first groove side walls are arranged at intervals along the direction of the first axis, the spacing between the two first groove side walls is not less than the width of the corresponding part of the pull rod, and when the pull rod is rotated to the extreme position toward the sleeve connector, at least part of the pull rod can enter the space defined by the first groove bottom wall and the two first groove side walls.

10. The support arm device according to claim 9, characterized in that: The avoidance structure also includes a second groove arranged on the sleeve connector, the second groove includes a second groove bottom wall and two second groove side walls respectively arranged at both ends of the second groove bottom wall, the second groove bottom wall is arranged parallel to the first axis, the second groove bottom wall and the first groove bottom wall are intersected and formed with an obtuse angle, the two second groove side walls are spaced apart along the direction of the first axis, the spacing between the two second groove side walls is not less than the width of the corresponding part of the pull rod connector, and when the pull rod connector moves to the extreme position toward the sleeve connector, at least part of the pull rod connector can enter the space defined by the second groove bottom wall and the two second groove side walls.

11. The support arm device according to claim 10, characterized in that: The pull rod connector moves toward and away from the sleeve connector along a first direction during adjustment, and the first direction is perpendicular to the bottom wall of the second groove.

12. The support arm device according to claim 3, characterized in that: The pull rod connector is adjustably mounted on the first seat and can move toward and away from the sleeve connector within a first moving range during adjustment. The two ends of the first moving range are the extreme positions at which the pull rod connector can move relative to the sleeve connector.

13. The support arm device according to claim 3, characterized in that: The pull rod can rotate toward and away from the sleeve connector within a first rotation range, and both ends of the first rotation range are extreme positions at which the pull rod can rotate relative to the sleeve connector.

14. The support arm device according to claim 1, characterized in that: The sleeve connector is a shaft, and the avoidance structure includes a side plane arranged on the sleeve connector. When the pull rod connector moves toward the sleeve connector, the side plane is used to avoid at least part of the pull rod connector, and / or when the pull rod rotates toward the sleeve connector, the side plane is used to avoid at least part of the pull rod.

15. The support arm device according to claim 14, characterized in that: The shaft is a part of a cylinder, and the side plane is formed by cutting it with a plane parallel to the first axis. The side plane extends from the first end of the shaft to the second end of the shaft. The cross-section of the cylinder is circular, and the central angle of the side plane on the cross-section is less than 180 degrees.

16. The support arm device according to claim 1, characterized in that: The sleeve connector includes a first shaft segment, a second shaft segment and a U-shaped segment, the first shaft segment and the second shaft segment are connected to the first seat body, and the U-shaped segment is connected between the first shaft segment and the second shaft segment; the U-shaped segment encloses the avoidance structure, or the U-shaped segment, the first shaft segment and the second shaft segment together enclose the avoidance structure; when the pull rod connector moves to an extreme position toward the sleeve connector, the avoidance structure can accommodate at least a portion of the pull rod connector, and / or, when the pull rod rotates to an extreme position toward the sleeve connector, the avoidance structure can accommodate at least a portion of the pull rod.

17. The support arm device according to claim 16, characterized in that: The U-shaped section forms an opening between the first shaft section and the second shaft section, and the width of the opening is not less than the width of the corresponding part of the pull rod connector.

18. The support arm device according to claim 16, characterized in that: The U-shaped section forms an opening between the first shaft section and the second shaft section, and the width of the opening is not less than the width of the corresponding part of the pull rod.

19. The support arm device according to claim 16, characterized in that: The U-shaped section includes a portion parallel to the first axis, and a third groove is provided on the portion of the U-shaped section parallel to the first axis. When the pull rod rotates to the extreme position of the first rotation range toward the sleeve connector, the third groove can accommodate at least a portion of the pull rod.

20. The support arm device according to claim 1, characterized in that: A recessed portion is provided on one side of the pull rod facing the sleeve connector. When the pull rod rotates to an extreme position facing the sleeve connector, the recessed portion can avoid at least a portion of the sleeve connector to further expand the rotation range of the pull rod toward the sleeve connector.

21. The support arm device according to claim 20, characterized in that: The pull rod includes a mating section that is bent away from the sleeve connector to form the recessed portion.

22. The support arm device according to claim 1, characterized in that: The tie rod connector is provided with a threaded hole, and the connecting seat further comprises an adjusting bolt, which is threadably matched with the tie rod connector. By rotating the adjusting bolt, the tie rod connector can be driven to move toward or away from the sleeve connector within the first moving range.

23. The support arm device according to claim 22, characterized in that: The pull rod connector is also provided with a guide hole, and the connecting seat further comprises a guide column, which is mounted on the first seat body and penetrates the guide hole, so that the pull rod connector can only move toward or away from the sleeve connector.

24. The support arm device according to claim 23, characterized in that: The adjusting bolt is located between the guide column and the pull rod.

25. The support arm device according to claim 1, characterized in that: The sleeve connector is non-rotatably mounted on the first seat body.

26. The support arm device according to claim 25, characterized in that: The first seat body comprises a first side plate and a second side plate arranged opposite to the first side plate, the first side plate is provided with a first assembly hole, the second side plate is provided with a second assembly hole, the sleeve connector comprises a first assembly end and a second assembly end, the first assembly end is passed through the first assembly hole, the second assembly end is passed through the second assembly hole, the cross-sectional shape of the first assembly end is non-circular, the shape of the first assembly hole is adapted to the cross-sectional shape of the first assembly end, the first side plate restricts the first assembly end from rotating, so that the sleeve connector cannot rotate relative to the first seat body; and / or, The first seat body includes a first side plate and a second side plate arranged opposite to the first side plate, the first side plate is provided with a first assembly hole, the second side plate is provided with a second assembly hole, the sleeve connector includes a first assembly end and a second assembly end, the first assembly end is passed through the first assembly hole, the second assembly end is passed through the second assembly hole, the cross-sectional shape of the second assembly end is non-circular, the shape of the second assembly hole is adapted to the cross-sectional shape of the second assembly end, and the second side plate limits the rotation of the second assembly end so that the sleeve connector cannot rotate relative to the first seat body.

27. The support arm device according to claim 26, characterized in that: A cross-sectional shape of one of the first assembly end and the second assembly end is D-shaped, and a cross-sectional shape of the other of the first assembly end and the second assembly end is circular.

28. The support arm device according to claim 26, characterized in that: The cross-sectional shape of at least one of the first assembly end and the second assembly end is non-circular and includes an arc segment that is rotatably matched with the sleeve.

29. The support arm device according to claim 26, characterized in that: The sleeve comprises: A tube body, comprising a first end and a second end, wherein the first end of the tube body faces the connecting seat; Two first ears are arranged at the first end of the tube body, one of the first ears is rotatably connected to the first assembly end, and the other first ear is rotatably connected to the second assembly end.

30. The support arm device according to claim 29, characterized in that: The first side plate and the second side plate are located between the two first ears.

31. The support arm device according to claim 1, characterized in that: The support arm device further comprises an assembly seat and a rod, the second end of the sleeve is rotatably connected to the assembly seat around a third axis, and the assembly seat is used to connect the medical device; The rod member includes a first end and a second end, the first end of the rod member is rotatably connected to the connecting seat around a fourth axis, the second end of the rod member is rotatably connected to the assembly seat around a fifth axis, and the sleeve, the rod member, the connecting seat and the assembly seat are combined to form a parallelogram four-bar linkage.

32. The support arm device according to claim 31, characterized in that: The rod is provided with a wire management groove.

33. The support arm device according to claim 1, characterized in that: The sleeve is provided with a limiting portion, and the spring rod assembly includes a spring, a first slider and a spring rod. The spring includes a first end and a second end. The first end of the spring faces the connecting seat and abuts the limiting portion. The spring rod is passed through the spring. The pull rod is rotatably connected to the spring rod. The first slider is connected to the spring rod and abuts the second end of the spring.

34. The support arm device according to claim 33, characterized in that: The limiting portion is arranged on the inner side wall of the sleeve, the spring is arranged inside the sleeve, and the first sliding block can slide in the sleeve and abut against the inner side wall of the sleeve.

35. The support arm device according to claim 34, characterized in that The spring rod assembly also includes a second slider, which is located between the second end of the pull rod and the limiting portion and connected to the spring rod. The second slider can slide in the sleeve and abut against the inner wall of the sleeve.

36. A support arm device for supporting medical equipment, characterized in that: The support arm device comprises a connecting seat and a spring tube, the connecting seat comprises a first seat body, a sleeve connecting piece and a pull rod connecting piece, the sleeve connecting piece and the pull rod connecting piece are installed on the first seat body; The spring tube comprises: A sleeve, comprising a first end and a second end, wherein the first end of the sleeve is rotatably connected to the sleeve connector around a first axis; An elastic force assembly, comprising a pull rod and a spring rod assembly, the pull rod comprising a first end and a second end, the first end of the pull rod being rotatably connected to the pull rod connector around a second axis, the second end of the pull rod being rotatably connected to the spring rod assembly, the spring rod assembly being installed in the sleeve, and the spring rod assembly being used to provide a balancing force so that the support arm device can support the weight of the medical device; The sleeve connector is located on the rotation path of the pull rod; Wherein, a avoidance structure is provided on the sleeve connector, and during the rotation of the pull rod toward the sleeve connector, the avoidance structure can avoid at least a portion of the pull rod to expand the rotation range of the pull rod toward the sleeve connector.

37. The support arm device according to claim 36, characterized in that The sleeve connector is a shaft, and the avoidance structure includes a groove arranged on the sleeve connector. When the pull rod rotates toward the sleeve connector, the groove can accommodate at least a portion of the pull rod.

38. The support arm device according to claim 36, characterized in that: The sleeve connector is a shaft, and the avoidance structure includes a side plane arranged on the sleeve connector and parallel to the first axis, the side plane extends from the first end of the shaft to the second end of the shaft, and during the rotation of the pull rod toward the sleeve connector, the side plane is used to avoid at least part of the pull rod.

39. The support arm device according to claim 36, characterized in that: The sleeve connector includes a first shaft segment, a second shaft segment and a U-shaped segment, the first shaft segment and the second shaft segment are connected to the first seat body, and the U-shaped segment is connected between the first shaft segment and the second shaft segment; the space enclosed by the U-shaped segment forms the avoidance structure, or the U-shaped segment, the first shaft segment and the second shaft segment jointly enclose the avoidance structure.

40. The support arm device according to claim 36, characterized in that: A recessed portion is provided on one side of the pull rod toward the sleeve connector. When the pull rod rotates to the extreme position of the first rotation range toward the sleeve connector, the recessed portion can avoid at least part of the sleeve connector to further expand the rotation range of the pull rod toward the sleeve connector.

41. The support arm device according to claim 40, characterized in that The pull rod includes a mating section that is bent away from the sleeve connector to form the recessed portion.

42. A medical device, characterized in that: include: Medical devices; The support arm device according to any one of claims 1 to 41; Wherein, the medical device is installed at the second end of the sleeve.

43. The medical device according to claim 42, characterized in that The medical device is at least one of an operating light, a display, a control box and a camera.

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