Supporting arm and operating lamp

Abstract

The embodiment of the invention provides a supporting arm and an operating lamp. The supporting arm comprises an arm body, a clamping pin, an anti-disengaging ring and an inserting part used for being connected with medical equipment. The arm body is provided with a connector, an inserting cavity is formed in the connector and used for allowing the inserting part to be inserted, and a clamping groove is formed in the side wall of the connector. The anti-drop ring is provided with a slot, and is movably sleeved on the periphery of the joint so as to move at least between a first position and a second position; at the first position, the inserting groove is communicated with the clamping groove, so that the clamping pin can be inserted into the clamping groove through the inserting groove so as to be matched with an inserting part of the medical equipment, and the inserting part is hung on the clamping pin and can rotate relative to the connector; and at the second position, the anti-falling ring at least partially shields the bayonet lock. According to the embodiment of the invention, after the anti-falling ring shields the bayonet lock, the bayonet lock is not easy to fall off under the shielding of the anti-falling ring, the bayonet lock is not easy to separate from the inserting part, the medical equipment is not easy to fall, and the reliability and the safety of the medical equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a support arm and an operating light. Background Art

[0002] In the related art, the surgical lamp in the operating room adopts the connection method of the support arm, the plug-in part on the lamp head is inserted into the support arm, the bayonet is inserted into the support arm and the plug-in part in the radial direction, and then a decorative cover is set on the circumference of the support arm, and the decorative cover is fixed on the support arm by screws. However, after putting on the decorative cover, the screws may be forgotten, and during the process of disinfection, wiping or rotating the surgical lamp, the decorative cover is easily moved axially to expose the bayonet, and the risk of the bayonet coming out is relatively high, which may cause serious medical accidents. Summary of the invention

[0003] In view of this, the embodiments of the present application hope to provide a support arm and a surgical light to reduce the risk of the pin coming out and improve the safety of the support arm and the surgical light.

[0004] The present application embodiment provides a support arm, comprising:

[0005] Used to connect the plug of medical equipment.

[0006] The arm body has a joint, the interior of the joint has an inserting cavity, the inserting cavity is used for inserting the inserting part of the medical device, and the side wall of the joint is provided with a card slot;

[0007] Bayonet;

[0008] An anti-drop ring having a slot and movably sleeved on the outer circumference of the joint to move between at least a first position and a second position;

[0009] When in the first position, the slot is communicated with the card slot, so that the bayonet can be inserted into the card slot through the slot to cooperate with the plug-in portion of the medical device, so that the plug-in portion is hooked on the bayonet and the plug-in portion can rotate relative to the joint;

[0010] In the second position, the anti-drop ring at least partially covers the bayonet.

[0011] When assembling the support arm of the embodiment of the present application, the anti-slip ring is sleeved on the outer periphery of the joint, the plug-in part of the medical device is inserted into the plug-in cavity, the anti-slip ring is moved to the first position so that the slot is aligned with the card slot, the card slot is inserted into the card slot through the slot, and the bayonet is also inserted into the plug-in part, that is, a part of the bayonet is located in the plug-in part and a part is located in the card slot, and then the anti-slip ring is moved so that the slot and the bayonet are at least partially staggered, so that the anti-slip ring at least partially covers the bayonet. Under the action of the self-weight of the medical device, the plug-in part is hung on the bayonet, and the bayonet bears at least part of the weight of the medical device.

[0012] When the anti-slip ring covers the bayonet pin, the bayonet pin is not easy to fall out under the cover of the anti-slip ring. In this way, the bayonet pin is not easy to be separated from the plug-in part, and the medical device is not easy to fall, thereby improving the reliability and safety of the medical device.

[0013] The medical device may need to be rotated during use, so the cooperation between the bayonet and the plug-in portion enables the medical device to be connected to the support arm and to be rotated around the axis of the plug-in portion, for example, at least 360°.

[0014] The present application embodiment provides a support arm, comprising:

[0015] The arm body has a joint, the interior of the joint has an inserting cavity, the inserting cavity is used for inserting the inserting part of the medical device, and the side wall of the joint is provided with a card slot;

[0016] Bayonet;

[0017] An anti-drop ring having a slot and movably sleeved on the outer circumference of the joint to move between at least a first position and a second position;

[0018] In the first position, the slot is connected to the card slot so that the card pin can be inserted into the card slot through the slot to cooperate with the plug-in portion of the medical device; in the second position, the anti-slip ring at least partially covers the card pin.

[0019] When assembling the support arm of the embodiment of the present application, the anti-slip ring is sleeved on the outer periphery of the joint, the plug-in part of the medical device is inserted into the plug-in cavity, the anti-slip ring is moved to the first position so that the slot is aligned with the card slot, the card slot is inserted into the card slot through the slot, and the bayonet is also inserted into the plug-in part, that is, a part of the bayonet is located in the plug-in part and a part is located in the card slot, and then the anti-slip ring is moved so that the slot and the bayonet are at least partially staggered, so that the anti-slip ring at least partially covers the bayonet. Under the action of the self-weight of the medical device, the plug-in part is hung on the bayonet, and the bayonet bears at least part of the weight of the medical device.

[0020] When the anti-slip ring covers the bayonet pin, the bayonet pin is not easy to fall out under the cover of the anti-slip ring. In this way, the bayonet pin is not easy to be separated from the plug-in part, and the medical device is not easy to fall, thereby improving the reliability and safety of the medical device.

[0021] The medical device may need to be rotated during use, so the cooperation between the bayonet and the plug-in portion enables the medical device to be connected to the support arm and to be rotated around the axis of the plug-in portion, for example, at least 360°.

[0022] The present application embodiment provides a surgical lamp, comprising:

[0023] A lamp head assembly, comprising a lamp holder, a connecting arm and a plurality of light sources arranged on the lamp holder, the light sources being used to project illumination light to the surgical area, the lamp holder being connected to the connecting arm;

[0024] And the support arm described in any embodiment of the present application, the connecting arm is connected to a plug-in part, the outer periphery of the plug-in part has a convex ring or a limiting ring groove, when the plug-in part abuts against the bottom of the convex ring or is inserted into the limiting ring groove, the lamp head assembly is hung on the pin through the plug-in part, and the lamp head assembly can rotate relative to the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of a support arm according to an embodiment of the present application, wherein the protective cover is in an avoidance position;

[0026] Figure 2 This is an exploded schematic diagram of a connector and a protective sleeve according to an embodiment of the present application;

[0027] Figure 3 It is a schematic diagram of a support arm and a connecting arm of a medical device according to an embodiment of the present application, wherein the protective cover is in an avoidance position and the bayonet pin has not yet been inserted into the bayonet slot;

[0028] Figure 4 for Figure 3 An exploded schematic diagram of a local structure of the structure shown in another perspective;

[0029] Figure 5 for Figure 3 A schematic diagram of another state of the structure shown, wherein the protective cover is in the installed position;

[0030] Figure 6 for Figure 5 The structure shown is a schematic diagram of another perspective after omitting a part of the structure of the connecting arm, wherein the protective cover is in the installed position;

[0031] Figure 7 for Figure 6 A schematic diagram of another perspective of the structure shown, wherein the protective cover is in an avoidance position;

[0032] Figure 8 for Figure 7 The structure shown is a schematic diagram after the anti-slip ring is omitted;

[0033] Fig. 9 for Figure 8 a cross-sectional view of the structure shown;

[0034] Fig.10 for Fig. 9 A local enlarged schematic diagram of point A in FIG.

[0035] Fig.11 for Figure 8 a cross-sectional view of the structure shown;

[0036] Fig.12 This is a schematic diagram of the cooperation between the anti-slip ring and the connecting piece according to an embodiment of the present application.

[0037] Description of Reference Numerals

[0038] 100-support arm;

[0039] 11-connector; 11A-first connector section; 111A-elastic buckle; 1111-spring; 1112-protrusion; 11B-second connector section; 11D-shoulder; 111-housing; 111a-avoidance groove; 112-inner tube; 112a-threaded hole; 11a-insertion cavity; 11b-opening; 11c-slot;

[0040] 12-anti-slip ring; 12a-connecting hole; 12b-first shaft end face; 12c-second shaft end face; 12d-slot; 13-connecting piece; 131-end cap; 132-first connecting section; 133-second connecting section;

[0041] 14-protective cover; 14a-first positioning groove;

[0042] 15- latch;

[0043] 200 - connecting arm; 201 - plug-in portion; 200a - top surface; 200b - convex ring. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0046] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the specific corresponding schematic diagrams, which may be the left and right directions in normal use or not.

[0047] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0048] The present application embodiment provides a support arm 100, see Figure 1 , including an arm body, a bayonet 15 (refer to Fig.10 and Fig.11 ), an anti-slip ring 12 and a plug-in portion 201 for connecting medical equipment.

[0049] The arm body has a joint 11. The joint 11 is used to connect a medical device.

[0050] The specific type of the medical device is not limited. For example, it can be a lamp head assembly of a surgical lamp.

[0051] See also Fig.10 The connector 11 has an inserting cavity 11a inside, and the inserting cavity 11a is used for inserting the inserting part 201 of the medical device. Specifically, the lower end of the inserting cavity 11a has an opening 11b, and the inserting part 201 is inserted into the inserting cavity 11a through the opening 11b. Figure 7 and Fig.11 The side wall of the connector 11 is provided with a card slot 11c.

[0052] The anti-drop ring 12 is movably sleeved on the outer circumference of the joint 11 to move between at least a first position and a second position.

[0053] See also Figure 3 and Figure 4 The anti-slip ring 12 has a slot 12d. Specifically, the slot 12d penetrates the side wall of the anti-slip ring 12 along the radial direction of the anti-slip ring 12.

[0054] When the anti-drop ring 12 is in the first position, the slot 12d is connected to the slot 11c, so that the bayonet 15 can be inserted into the slot 11c through the slot 12d to cooperate with the plug-in part 201 of the medical device, so that the plug-in part 201 is hung on the bayonet 15 and can rotate relative to the connector 11.

[0055] When the anti-slip ring 12 is at the second position, the anti-slip ring 12 at least partially blocks the latch 15 .

[0056] When assembling the support arm 100 of the embodiment of the present application, the anti-slip ring 12 is sleeved on the outer periphery of the joint 11, the plug-in portion 201 of the medical device is inserted into the plug-in cavity 11a, the anti-slip ring 12 is moved to the first position so that the slot 12d is aligned with the card slot 11c, the bayonet 15 is inserted into the card slot 11c through the slot 12d, and the bayonet 15 is also inserted into the plug-in portion 201, that is, a part of the bayonet 15 is located in the plug-in portion 201, and a part is located in the card slot 11c, and then the anti-slip ring 12 is moved so that the slot 12d and the bayonet 15 are at least partially offset, so that the anti-slip ring 12 at least partially covers the bayonet 15. Under the action of the self-weight of the medical device, the medical device is hung on the bayonet 15 through the plug-in portion 201, and the bayonet 15 bears at least part of the weight of the medical device.

[0057] It should be noted that the above-mentioned movement includes translation and / or rotation.

[0058] When the anti-slip ring 12 blocks the bayonet 15 , the bayonet 15 is not easy to slip out under the cover of the anti-slip ring 12 . Thus, the bayonet 15 is not easy to be separated from the plug-in portion 201 , and the medical device is not easy to fall, thereby improving the reliability and safety of the medical device.

[0059] The medical device may need to be rotated during use, so the cooperation between the latch 15 and the plug-in portion 201 enables the medical device to be connected to the support arm 100 and to be rotated around the axis of the plug-in portion 201, for example, at least 360°.

[0060] The shape of the latch pin 15 matches the latch slot 11c, and the shapes and sizes of the two are almost the same.

[0061] In some embodiments, the slot 11 c extends substantially along the circumference of the connector 11 , that is, substantially in the shape of a fan ring, and the latch 15 also substantially in the shape of a fan ring.

[0062] For example, see Figure 1 and Figure 8 The support arm 100 includes a connecting piece 13 , and the anti-drop ring 12 is connected to the joint 11 through the connecting piece 13 and can be fixed in the second position by the connecting piece 13 .

[0063] In this embodiment, when the anti-slip ring 12 is in the second position, it is fixed to the joint 11 through the connecting member 13. At this time, there is no relative movement between the anti-slip ring 12 and the joint 11, so that the anti-slip ring 12 blocks the bayonet 15, reducing the probability of the bayonet 15 coming out through the slot 11c. It should be noted that when the anti-slip ring 12 is in the first position, the anti-slip ring 12 can also be connected to the anti-slip ring 12, but the connecting member 13 allows the anti-slip ring 12 to rotate relative to the joint 11. Of course, in the first position, the connecting member 13 can also be completely removed from the anti-slip ring 12.

[0064] For example, see Figure 4 , Fig.10 and Fig.11 The joint 11 includes an outer shell 111 and an inner tube 112. The outer shell 111 is sleeved on the outer periphery of the inner tube 112, and the card slot 11c penetrates the side wall of the outer shell 111 and the side wall of the inner tube 112. That is, the card pin 15 passes through the side wall of the outer shell 111 and the side wall of the inner tube 112.

[0065] In some embodiments, the inner tube 112, the plug-in portion 201 and the bayonet 15 may all be made of metal. The plug-in portion 201 is inserted into the inner tube 112. The inner tube 112, the bayonet 15 and the plug-in portion 201 all serve as structural load-bearing parts. The metal material can improve the structural strength and reliability.

[0066] The material of the outer shell 111 can be plastic. The outer shell 111 serves as the appearance part of the support arm 100, shielding the structure of the inner tube 112 and also facilitating the molding of the required process shape.

[0067] For example, see Figure 4 and Fig.10 The side wall of the housing 111 is provided with an avoidance groove 111a, see Fig.12 The anti-slip ring 12 is provided with a connecting hole 12a, and one end of the connecting member 13 passes through the connecting hole 12a and the avoidance groove 111a. When one end of the connecting member 13 is connected to the inner tube 112, the connecting member 13 fixes the anti-slip ring 12 in the second position. When one end of the connecting member 13 is separated from the inner tube 112, the anti-slip ring 12 can drive the connecting member 13 to move along the avoidance groove 111a. The inner tube 112 serves as a structural force-bearing member, and the connecting member 13 is fixed to the inner tube 112, and the structure is reliable. It should be noted that when the connecting member 13 is fixed to the inner tube 112, the anti-slip ring 12 at least partially blocks the bayonet 15.

[0068] The specific type of the connecting member 13 is not limited, and it can be a screw, for example.

[0069] For example, see Fig.12 The connecting member 13 includes a first connecting section 132 and a second connecting section 133. The first connecting section 132 is used for clearance fit with the connecting hole 12a. The second connecting section 133 is used for connecting to the inner tube 112.

[0070] Exemplarily, the second connecting section 133 can be threadedly matched with the connecting hole 12a and pass through the connecting hole 12a, that is, the second connecting section 133 is a threaded section. Preferably, the width of the avoidance groove 111a along the axial direction of the anti-slip ring 12 is greater than the diameter of the second connecting section 133. When the second connecting section 133 of the connector 13 is separated from the inner tube 112, the second connecting section 133 is accommodated in the avoidance groove 111a. At this time, the second connecting section 133 is supported by the avoidance groove 111a. Specifically, when the second connection section 133 of the connector 13 is separated from the inner tube 112, the anti-slip ring 12 falls with the connector 13 under the gravity of the anti-slip ring 12, and is then supported by the avoidance groove 111a; in addition, the anti-slip ring 12 exerts a downward force on the connector 13, so the height of the end of the second connection section 133 close to the anti-slip ring 12 is lower than the height of the end of the second connection section 133 away from the anti-slip ring 12, which is equivalent to the second connection section 133 swinging a certain angle in the avoidance groove 111a. This angle makes it difficult for the step structure to align with the connection hole 12a. When the two are not aligned, even if the connector 13 is screwed, it is difficult for the second connection section 133 to enter the connection hole 12a, that is, it is difficult for the connector 13 to fall out of the connection hole 12a, thus improving the reliability of the connector 13 in preventing it from falling out. However, the present application is not limited thereto, and other situations may be possible if the size of the connection hole 12a, the width of the avoidance groove 111a, and the weight of the second connection segment 133 are reasonably set. For example, the second connection segment 133 may be set to be heavier, so that when the second connection segment 133 of the connector 13 is separated from the inner tube 112, the height of the end of the second connection segment 133 close to the anti-slip ring 12 is higher than the height of the end of the second connection segment 133 away from the anti-slip ring 12; or the height of the end of the second connection segment 133 close to the anti-slip ring 12 is equal to the height of the end of the second connection segment 133 away from the anti-slip ring 12, that is, the connector 13 falls.

[0071] In some embodiments, the connector 13 further includes an end cap 131, and the first connecting section 132 connects the second connecting section 133 and the end cap 131. In other words, the end cap 131 and the second connecting section 133 are respectively connected to opposite ends of the first connecting section 132. Of course, in other embodiments, the connector 13 may also not have the end cap 131.

[0072] It should be noted that the minimum aperture of the connecting hole 12a is larger than the outer diameter of the first connecting section 132, and the minimum aperture of the connecting hole 12a is adapted to the outer diameter of the second connecting section 133, so that the second connecting section 133 and the first connecting section 132 can pass through the connecting hole 12a in sequence.

[0073] At least adjacent to the first connecting section 132 , the diameter of the second connecting section 133 is greater than the diameter of the first connecting section 132 so as to form a step structure at the connection between the two.

[0074] Exemplarily, the length of the first connecting section 132 is greater than the depth of the connecting hole 12a and the corresponding part thereof, and the length of the second connecting section 133 is less than the distance between the outer wall of the inner tube 112 and the inner wall of the anti-slip ring 12, and greater than the distance between the inner wall of the anti-slip ring 12 and the outer wall of the outer shell 111.

[0075] The depth of the connection hole 12a and the corresponding part thereof refers to the depth of the portion where the connection hole 12a and the first connection section 132 match after the connection member 13 is fixed to the inner tube 112. For example, in an embodiment where the connection member 13 has an end cap 131, the connection hole 12a includes a first part and a second part, wherein the first part is a tapered hole, i.e., funnel-shaped, and the inner diameter of the inner end of the first part along the radial direction of the anti-slip ring 12 is smaller than the inner diameter of the outer end, and the second part is a straight hole of equal diameter. When the connection member 13 is fixed on the inner tube 112, the end cap 131 is accommodated in the first part, and the first connection section 132 is accommodated in the second part. At this time, the depth of the connection hole 12a and the corresponding part thereof refers to the depth of the second part. For another example, in an embodiment where the connection member 13 does not have an end cap 131, when the connection member 13 is fixed on the inner tube 112, the length of the connection member 13 in the connection hole 12a is the depth of the connection hole and the corresponding part thereof.

[0076] In this embodiment, when the connector 13 is fixed on the inner tube 112, at least a portion of the second connector section 133 is inserted into the inner tube 112, and the first connector section 132 is inserted into the connecting hole 12a. When the connector 13 is separated from the inner tube 112, the second connector section 133 moves to the avoidance groove 111a. At this time, the second connector section 133 does not interfere with the inner tube 112. When the anti-slip ring 12 rotates, the second connector section 133 slides in the avoidance groove 111a, so that the anti-slip ring 12 can drive the connector 13 to rotate relative to the joint 11.

[0077] Since a step structure is formed at the junction of the second connecting section 133 and the first connecting section 132, the step structure and the hole wall of the connecting hole 12a have a blocking effect to a certain extent, reducing the probability of the second connecting section 133 escaping through the connecting hole 12a, thereby making it difficult for the connecting piece 13 to detach from the anti-slip ring 12.

[0078] Preferably, the sum of the lengths of the first connecting section 132 and the end cap 131 is greater than the wall thickness of the anti-slip ring 12 .

[0079] Exemplarily, the first connecting section 132 is a non-threaded section, for example, a polished rod section. Figure 4 and Fig.11, the side wall of the inner tube 112 is provided with a threaded hole 112a, and the second connecting section 133 is a threaded section and is used to achieve threaded connection with the threaded hole 112a. In this way, the connecting member 13 can be fixed on the inner tube 112 by screwing the connecting member 13. Specifically, the threaded hole 112a is located within the range of the avoidance groove 111a, and when the second connecting section 133 moves to a position aligned with the threaded hole 112a, the second connecting section 133 can be screwed into the threaded hole 112a.

[0080] Exemplarily, an internal thread is provided on the hole wall of the connecting hole 12a, which is used to threadably cooperate with the second connecting section 133 when the second connecting section 133 passes through the connecting hole 12a. Specifically, when the connecting member 13 passes through the connecting hole 12a from the outside to the inside in the radial direction, due to the cooperation between the internal threads of the second connecting section 133 and the connecting hole 12a, it is necessary to continuously screw the connecting member 13 so that the second connecting section 133 completely passes through the connecting hole 12a, and then the first connecting section 132 is penetrated in the connecting hole 12a. When the second connecting section 133 withdraws from the threaded hole 112a on the inner tube 112, the second connecting section 133 enters the avoidance groove 111a, and the anti-slip ring 12 and the connecting member 13 are supported by the avoidance groove 111a and the connecting hole 12a. Because the thread on the second connecting section 133 and the internal thread of the connecting hole 12a need to be aligned and continuously screwed outward, the second connecting section 133 can enter the connecting hole 12a, and the weight of the anti-slip ring 12 acts on the connecting member 13, which will produce a bending moment on the connecting member 13, making it difficult to align the thread on the second connecting section 133 and the internal thread of the connecting hole 12a. When the two are not aligned, even if the connecting member 13 is screwed, the second connecting section 133 cannot enter the connecting hole 12a, that is, the connecting member 13 is difficult to disengage from the connecting hole 12a, thereby improving the reliability of the connecting member 13 in preventing disengagement.

[0081] It should be noted that the end cap 131 is used to abut against the anti-slip ring 12 to apply a force to the anti-slip ring 12 toward the joint 11 .

[0082] Exemplarily, the distance between the outer wall of the inner tube 112 and the outer wall of the anti-slip ring 12 is less than the length of the connector 13. When the connector 13 is separated from the inner tube 112, the connector 13 protrudes from the outer wall of the anti-slip ring 12. For example, in an embodiment with an end cap 131, the end cap 131 protrudes from the outer wall of the anti-slip ring 12. When the connector 13 fixes the anti-slip ring 12 in the second position, the connector 13 does not extend beyond the outer wall of the anti-slip ring 12. In this way, the connector 13 is prevented from scratching or interfering with other structures.

[0083] It should be noted that when the connecting member 13 is separated from the inner tube 112 and is inserted into the avoidance groove 111a, the cooperation between the avoidance groove 111a and the connecting member 13 defines the movement trajectory of the anti-slip ring 12. Specifically, when the anti-slip ring 12 rotates, the anti-slip ring 12 drives the connecting member 13 to move together, and the connecting member 13 moves in the avoidance groove 111a. Therefore, the shape of the avoidance groove 111a determines the movement trajectory of the connecting member 13, and further determines the movement trajectory of the anti-slip ring 12.

[0084] In some embodiments, the avoidance groove 111a is an arc groove extending along the circumference of the housing 111. When the anti-slip ring 12 rotates, the connecting member 13 moves circumferentially in the avoidance groove 111a without axial displacement, so the anti-slip ring 12 also only rotates circumferentially without axial displacement.

[0085] In other embodiments, the avoidance groove 111a is a curved groove extending in the circumferential direction and the axial direction of the housing 111. In other words, the avoidance groove 111a can be understood as extending in a spiral along the surface of the housing 111. When the anti-slip ring 12 rotates, the connecting member 13 moves in the avoidance groove 111a in the circumferential direction and displaces in the axial direction at the same time, so the anti-slip ring 12 also rotates in the circumferential direction and displaces in the axial direction at the same time.

[0086] In another embodiment, the avoidance groove 111a includes a plurality of groove segments extending along the circumferential direction and the axial direction of the housing 111 and connected to each other, such as a first groove segment extending along the axial direction of the housing 111, and a second groove segment extending along the circumferential direction of the housing 111. When the anti-drop ring 12 moves, the connecting member 13 first moves axially in the avoidance groove 111a, and then moves circumferentially.

[0087] For example, see Figure 2 The joint 11 includes a first joint segment 11A and a second joint segment 11B, and the outer diameter of the second joint segment 11B is smaller than the outer diameter of the first joint segment 11A. The second joint segment 11B is located at the lower end of the first joint segment 11A. Specifically, the opening 11b is provided at the lower end of the second joint segment 11B.

[0088] The connection between the first joint section 11A and the second joint section 11B forms a shoulder 11D (see Fig.10 The anti-slip ring 12 surrounds the outer circumference of the second joint segment 11B, and the inner diameter of the anti-slip ring 12 is smaller than the outer diameter of the first joint segment 11A, that is, the anti-slip ring 12 will not move to the outer circumference of the first joint segment 11A. The slot 11c is provided on the second joint segment 11B.

[0089] It should be noted that the first joint section 11A and the second joint section 11B are divided according to the shape of the joint 11, and the first joint section 11A and the second joint section 11B may both include an outer shell 111 and an inner tube 112. That is, a portion of the inner tube 112 is located in the first joint section 11A, and another portion is located in the second joint section 11B, and a portion of the outer shell 111 is located in the first joint section 11A, and another portion is located in the second joint section 11B. The connector 13 is used to connect to the inner tube 112 corresponding to the second joint section 11B.

[0090] The outer diameter of the outer shell 111 at the first joint section 11A is greater than the outer diameter at the second joint section 11B, so that the above-mentioned shoulder 11D is formed outside the outer shell 111. It should be noted that the inner diameter and outer diameter of the inner tube 112 at the first joint section 11A and the second joint section 11B are not limited, as long as the plug-in portion 201 can be inserted easily.

[0091] The plug-in portion 201 is inserted into the second joint segment 11B from the opening 11b at the bottom end of the second joint segment 11B and fixed to the corresponding inner tube 112 of the second joint segment 11B. It should be noted that the top end of the plug-in portion 201 can also extend upward into the inner tube 112 of the first joint segment 11A.

[0092] Exemplarily, when the anti-slip ring 12 moves along its axial direction to a position in contact with the stop shoulder 11D and / or moves to a position in contact with the medical device, the anti-slip ring 12 at least partially blocks the bayonet 15 .

[0093] For example, when the anti-slip ring 12 moves axially to a position in contact with the shoulder 11D, the anti-slip ring 12 at least partially blocks the bayonet 15. Specifically, when the connecting member 13 is separated from the second joint section 11B, that is, the connecting member 13 is not inserted into the avoidance groove 111a, for example, the connecting member 13 is not yet connected to the anti-slip ring 12. At this time, the movement of the anti-slip ring 12 is not restricted by the connecting member 13, and the anti-slip ring 12 can rotate relative to the second joint section 11B or move axially relative to the second joint section 11B. In other words, when the anti-slip ring 12 moves axially to a position in contact with the shoulder 11D, the positions of the bayonet groove 11c and the bayonet 15 are staggered by a certain distance in the axial direction. Therefore, no matter how the anti-slip ring 12 rotates, the anti-slip ring 12 will always block at least a part of the bayonet 15, and the bayonet 15 cannot be aligned with the bayonet groove 11c anyway, so the bayonet 15 cannot fall out.

[0094] It should be noted that, when the connecting piece 13 is connected to the second joint segment 11B (for example, including two situations: the second connecting segment 133 mentioned above can be fixed on the inner tube 112, or the second connecting segment 133 can be separated from the inner tube 112 and fall into the avoidance groove 111a), the anti-slip ring 12 may not contact the shoulder 11D.

[0095] For another example, when the connector 13 is separated from the second joint segment 11B, and the anti-slip ring 12 moves axially to contact the connecting arm 200 of the medical device, the anti-slip ring 12 at least partially blocks the bayonet 15. When the connector 13 is separated from the second joint segment 11B, that is, the connector 13 will not be inserted into the avoidance groove 111a, for example, the connector 13 may not be connected to the anti-slip ring 12. At this time, the movement of the anti-slip ring 12 is not restricted by the connector 13, and the anti-slip ring 12 can rotate relative to the second joint segment 11B, and can also move axially relative to the second joint segment 11B. In other words, in this position, the positions of the bayonet 11c and the bayonet 15 are staggered by a certain distance in the axial direction. Therefore, no matter how the anti-slip ring 12 rotates, the anti-slip ring 12 will always block at least a part of the bayonet 15, and the bayonet 15 cannot be aligned with the bayonet 11c anyway, so the bayonet 15 cannot fall out.

[0096] It should be noted that, when the connecting piece 13 is connected to the second joint segment 11B (for example, including two situations: the above-mentioned second connecting segment 133 can be fixed on the inner tube 112, or the second connecting segment 133 is separated from the inner tube 112 and falls into the avoidance groove 111a), the anti-slip ring 12 may not be in contact with the connecting arm 200.

[0097] Exemplarily, the support arm 100 includes a protective sleeve 14, which is sleeved on the outer periphery of the joint 11 and can move axially along the anti-slip ring 12. The protective sleeve 14 has an installation position and an avoidance position. In the installation position, refer to Figure 6 , Figure 6 The protective cover 14 is shown in the installation position, and the protective cover 14 is sleeved on the outer periphery of the anti-slip ring 12. In the avoidance position, refer to Figure 7 and Figure 8 , Figure 7 and Figure 8 The protective sleeve 14 is shown in the avoidance position, exposing the slot 12d of the anti-slip ring 12. That is, the inner diameter of the protective sleeve 14 is larger than the outer diameter of the anti-slip ring 12, and the protective sleeve 14 can move axially to the outer periphery of the anti-slip ring 12.

[0098] When the protective sleeve 14 is in the avoidance position, the protective sleeve 14 can be moved to a position that does not interfere with the assembly of the anti-slip ring 12. The two may have no overlap at all along the axial direction, or may have partial overlap. At this time, a part of the protective sleeve 14 is sleeved on the outer periphery of a part of the anti-slip ring 12.

[0099] For example, during the assembly process, the protective cover 14 may be placed in the avoidance position, the anti-slip ring 12 may be assembled first, and then the protective cover 14 may be moved to the outer periphery of the anti-slip ring 12 .

[0100] In this embodiment, during the use of the medical device, the protective cover 14 is located at the outer periphery of the anti-slip ring 12. Since the protective cover 14 is sleeved on the outer periphery of the anti-slip ring 12, even if the anti-slip ring 12 fails and the bayonet 15 is aligned with the slot 11c, it is blocked by the protective cover 14, and the bayonet 15 will not be separated from the slot 11c, that is, the bayonet 15 will not fall out, so the medical device will not fall, and the protective cover 14 can further prevent the bayonet 15 from falling out, further improving the safety of the support arm 100.

[0101] In the embodiment where the connecting piece 13 is provided, the protective sleeve 14 is also used to block the connecting piece 13, thereby preventing the connecting piece 13 from moving radially outward, so that the connecting piece 13 remains fixed on the inner tube 112, which is beneficial to fix the anti-slip ring 12 in the second position and reduce the probability of the pin 15 falling out.

[0102] For example, in an embodiment in which the connector 13 is provided, when the connector 13 is separated from the inner tube 112, a portion of the connector 13 protrudes from the outer wall of the anti-slip ring 12, which is used to limit the axial movement of the protective sleeve 14. Specifically, during the assembly process, when the connector 13 has not yet been fixed to the inner tube 112, or the connector 13 has not been screwed into place, a portion of the connector 13 protrudes from the outer wall of the anti-slip ring 12. At this time, if the protective sleeve 14 is to be moved to the outer periphery of the anti-slip ring 12, the protective sleeve 14 will interfere with the connector 13, and the protective sleeve 14 cannot be moved to the installation position. In this way, it can serve as a reminder to the operator, that is, the connector 13 must be installed in place before the protective sleeve 14 can be moved into place, which plays a role in assisting in ensuring that the connector 13 is installed in place.

[0103] Exemplarily, the protective cover 14 can rotate relative to the anti-slip ring 12 and the joint 11. That is to say, whether in the assembly process or in the case where the assembly is completed, the protective cover 14 will never be fixed on the anti-slip ring 12 or the joint 11, and the protective cover 14 can always rotate and move under the action of external force.

[0104] This solution does not need to use screws to fix the protective cover 14, so the appearance of the protective cover 14 can be screw-free, which improves the aesthetic appearance of the protective cover 14. In addition, it is also convenient to disinfect the protective cover 14.

[0105] Exemplarily, the material of the protective cover 14 is plastic. Thus, the plastic material facilitates the protective cover 14 to achieve more technological appearance.

[0106] It should be noted that in some embodiments, the support arm 100 is provided with both the connector 13 and the protective cover 14. In other embodiments, the support arm 100 is provided with the connector 13 but not the protective cover 14. In still other embodiments, the support arm 100 is provided with the protective cover 14 but not the connector 13.

[0107] In the embodiment where the joint 11 includes the first joint segment 11A and the second joint segment 11B, the inner diameter of the protective sleeve 14 is greater than the outer diameter of the first joint segment 11A. When the protective sleeve 14 is located at the installation position, the protective sleeve 14 is sleeved on the outer periphery of the second joint segment 11B and the anti-slip ring 12, and when the protective sleeve 14 is located at the avoidance position, the protective sleeve 14 moves to the outer periphery of the first joint segment 11A.

[0108] In some embodiments, the outer wall of the anti-slip ring 12 is substantially flush with the outer wall of the first joint segment 11A.

[0109] Exemplarily, the circumferential outer surface of the joint 11 is provided with an elastic buckle 111A. In some specific embodiments, the circumferential surface of one end of the first joint segment 11A close to the second joint segment 11B is provided with an elastic buckle 111A.

[0110] The inner wall of the protective sleeve 14 is provided with a first positioning groove; when the protective sleeve 14 is located at the installation position, a part of the elastic buckle 111A is inserted into the first positioning groove to constrain the protective sleeve 14 at least axially at the installation position.

[0111] It should be noted that the shape of the first positioning groove 14a is not limited. In some embodiments, when the first positioning groove 14a and the part where the elastic buckle 111A is inserted into the first positioning groove 14a have substantially the same circumferential dimensions, the protective sleeve 14 cannot rotate relative to the joint 11 when in the installed position. When the first positioning groove 14a extends a certain length along the circumference of the joint 11, the protective sleeve 14 can rotate a certain angle relative to the joint 11 in the installed position, and the angle depends on the central angle corresponding to the first positioning groove 14a. For example, in some embodiments, the first positioning groove 14a can be an annular groove, that is, the first positioning groove 14a surrounds the circumferential inner surface of the protective sleeve 14 by 360°, and the protective sleeve 14 can rotate arbitrarily in the circumferential direction.

[0112] Since the elastic buckle 111A and the first positioning groove 14a are positioned and matched, if the protective cover 14 needs to be moved axially, the external force needs to overcome the force applied by the elastic buckle 111A to the protective cover 14 before the protective cover 14 can be moved. It can be seen that the elastic buckle 111A can improve the stability of the protective cover 14 in the installed position, so that the protective cover 14 is not easily dislocated from the installed position in the event of accidental touch.

[0113] Exemplarily, a second positioning groove is provided on the inner wall of the protective cover 14 , and when the protective cover 14 is located at the avoidance position, a portion of the elastic buckle 111A is inserted into the second positioning groove to constrain the protective cover 14 at least axially in the avoidance position.

[0114] It should be noted that the shape of the second positioning groove is not limited. In some embodiments, when the second positioning groove and the part where the elastic buckle 111A is inserted into the second positioning groove have substantially the same circumferential dimensions, the protective cover 14 cannot rotate relative to the joint 11 when in the installed position. When the second positioning groove extends a certain length along the circumference of the joint 11, the protective cover 14 can rotate a certain angle relative to the joint 11 in the avoidance position, and the angle depends on the central angle corresponding to the second positioning groove. For example, in some embodiments, the second positioning groove can be an annular groove, that is, the second positioning groove surrounds the circumferential inner surface of the protective cover 14 by 360°, and the protective cover 14 can rotate arbitrarily along the circumference.

[0115] Since the elastic buckle 111A and the second positioning groove are positioned and matched, if the protective cover 14 needs to be moved axially, the external force needs to overcome the force applied by the elastic buckle 111A to the protective cover 14 before the protective cover 14 can be moved. It can be seen that the elastic buckle 111A can improve the stability of the protective cover 14 in the avoidance position. For example, during the assembly process, after the protective cover 14 is moved to the avoidance position, you can let go and the protective cover 14 will not fall off by itself. After the anti-slip ring 12 is assembled, you can use force to move the protective cover 14 to the outer periphery of the anti-slip ring 12.

[0116] When the protective cover 14 has both the first positioning groove 14 a and the second positioning groove, the first positioning groove 14 a is located inside the protective cover 14 and close to the upper end of the protective cover 14 ; the second positioning groove is located inside the protective cover 14 and close to the lower end of the protective cover 14 .

[0117] The specific structure of the elastic buckle 111A is not limited.

[0118] For example, see Figure 2The elastic buckle 111A includes a spring piece 1111 and a protrusion 1112 arranged on the outer surface of the spring piece 1111. The end of the spring piece 1111 close to the anti-slip ring 12 is a free end, and the end away from the anti-slip ring 12 is a fixed end. The protrusion 1112 is arranged on the outside of the free end of the spring piece 1111. In this embodiment, when the protective cover 14 is located at the installation position, if the protective cover 14 is to be moved from the installation position to the avoidance position, when an external force is applied to the protective cover 14 axially away from the anti-slip ring 12, since the free end of the spring piece 1111 is close to the anti-slip ring 12, the spring piece 1111 tends to wedge against the anti-slip ring 12, and therefore, a larger force is required to move the protective cover 14 from the installation position. When the protective cover 14 is in the avoidance position, if an external force is applied to the protective cover 14 along the axial direction and close to the anti-slip ring 12, the spring piece 1111 has a certain guiding effect. Therefore, a relatively small external force is needed to move the protective cover 14 from the avoidance position to the installation position.

[0119] That is to say, the structure of the spring piece 1111 makes the external force required for the protective cover 14 to move from the installation position to the avoidance position greater than the external force required for the protective cover 14 to move from the avoidance position to the installation position.

[0120] The specific shape of the protrusion 1112 is not limited, for example, it can be a hemispherical protrusion or a hook shape, which is not limited here.

[0121] See also Fig.10 and Fig.11 The connecting arm 200 of the medical device has a top surface 200a facing the stop shoulder 11D, and the top surface 200a of the medical device is used to contact the anti-slip ring 12 to prevent the anti-slip ring 12 from continuing to move toward the medical device along the axial direction.

[0122] The distance between the clamping groove 11 c and the stop shoulder 11D, and the distance between the clamping groove 11 c and the top surface 200 a of the medical device may be smaller than the length of the anti-dropping ring 12 along the axial direction thereof.

[0123] The distance between the slot 11c and the shoulder 11D refers to the distance between the slot wall on the side of the slot 11c close to the shoulder 11D and the shoulder 11D along the axial direction. The distance between the slot 11c and the top surface 200a of the medical device refers to the distance between the slot wall on the side of the slot 11c close to the medical device and the top surface 200a of the medical device along the axial direction.

[0124] For ease of description, see Fig.12 The axial end face of the anti-slip ring 12 facing the shoulder 11D is recorded as the first axial end face 12b, and the axial end face of the anti-slip ring 12 facing the top surface 200a of the medical device is recorded as the second axial end face 12c. The first axial end face 12b and the second axial end face 12c are the axial end faces at opposite ends of the anti-slip ring 12 along the axial direction.

[0125] For example, when the position of the anti-slip ring 12 has not been fixed on the second joint section 11B, even if the anti-slip ring 12 can move in the axial direction, when the anti-slip ring 12 moves toward the direction close to the shoulder 11D until the first axial end face 12b contacts the shoulder 11D, the anti-slip ring 12 will not be separated from the second joint section 11B, and the second axial end face 12c of the anti-slip ring 12 will not cross the groove 11c in the axial direction, and the groove 11c is always within the area covered by the anti-slip ring 12 in the axial direction. Similarly, when the anti-slip ring 12 moves the second axial end face 12c in the direction away from the shoulder 11D until it contacts the top surface 200a of the medical device, the anti-slip ring 12 will not be separated from the second joint section 11B, and the first axial end face 12b of the anti-slip ring 12 will not cross the groove 11c in the axial direction, and the groove 11c is always within the area covered by the anti-slip ring 12 in the axial direction.

[0126] That is to say, within the possible range of movement of the anti-slip ring 12 along its axial direction, the slot 11c is always located within the area covered by the anti-slip ring 12 along the axial direction. In this way, the anti-slip ring 12 can be prevented from completely disengaging from the slot 11c, thereby improving the chance of the anti-slip ring 12 preventing the pin 15 from falling out.

[0127] It should be noted that, when the connecting piece 13 is connected to the second joint segment 11B (for example, including two situations: the above-mentioned second connecting segment 133 can be fixed on the inner tube 112, or the second connecting segment 133 can be separated from the inner tube 112 and fall into the avoidance groove 111a), the anti-slip ring 12 may not contact the shoulder 11D, and may not contact the top surface 200a of the connecting arm 200.

[0128] Exemplarily, the outer diameter of the anti-slip ring 12 is not greater than the outer diameter of the first joint segment 11A. For example, the outer diameter of the anti-slip ring 12 is the same as the outer diameter of the first joint segment 11A, and the outer walls of the two are flush; for another example, the outer diameter of the anti-slip ring 12 is smaller than the outer diameter of the first joint segment 11A, and the outer wall of the first joint segment 11A radially exceeds the outer wall of the anti-slip ring 12.

[0129] In this embodiment, in the embodiment provided with the protective sleeve 14 , the size of the protective sleeve 14 can be designed with reference to the outer diameter of the first joint segment 11A, and the anti-slip ring 12 hardly affects the shape and size of the protective sleeve 14 .

[0130] Of course, in some other embodiments, the outer wall of the anti-slip ring 12 may also extend radially beyond the outer wall of the first joint segment 11A, that is, the outer diameter of the anti-slip ring 12 may also be greater than the outer diameter of the first joint segment 11A.

[0131] Exemplarily, the axial length of the anti-slip ring 12 does not exceed the length of the second joint section 11B. In this way, the end of the anti-slip ring 12 away from the shoulder 11D will never exceed the second joint section 11B in the axial direction, thereby reducing the influence of the anti-slip ring 12 on the connection position of the medical device.

[0132] Exemplarily, the length of the protective cover 14 along its axial direction is greater than the length of the anti-slip ring 12 along its axial direction, and when the protective cover 14 is located at the installation position, the ends of the anti-slip ring 12 along its axial direction at opposite ends do not exceed the ends of the protective cover 14 along its axial direction at opposite ends. In other words, the protective cover 14 completely covers the anti-slip ring 12, and the anti-slip ring 12 cannot be seen from the outside of the support arm 100.

[0133] The present application embodiment provides a support arm, including an arm body, a latch 15 (refer to Fig.10 and Fig.11 ), anti-slip ring 12.

[0134] The specific type of the medical device is not limited. For example, it can be a lamp head assembly of a surgical lamp.

[0135] The medical device comprises a connecting arm 200 , to which a plug-in portion 201 is connected.

[0136] See also Fig.10 The connector 11 has an inserting cavity 11a inside, and the inserting cavity 11a is used for inserting the inserting part 201 of the medical device. Specifically, the lower end of the inserting cavity 11a has an opening 11b, and the inserting part 201 is inserted into the inserting cavity 11a through the opening 11b. Figure 7 and Fig.11 The side wall of the connector 11 is provided with a card slot 11c.

[0137] The anti-drop ring 12 is movably sleeved on the outer circumference of the joint 11 to move between at least a first position and a second position.

[0138] When the anti-drop ring 12 is in the first position, the slot 12 d is communicated with the card slot 11 c , so that the card pin 15 can be inserted into the card slot 11 c through the slot 12 d to cooperate with the plug-in portion 201 .

[0139] When the anti-slip ring 12 is at the second position, the anti-slip ring 12 at least partially blocks the latch 15 .

[0140] When assembling the support arm 100 of the embodiment of the present application, the anti-slip ring 12 is sleeved on the outer periphery of the joint 11, the plug-in portion 201 is inserted into the plug-in cavity 11a, the anti-slip ring 12 is moved to the first position so that the slot 12d is aligned with the card slot 11c, the bayonet 15 is inserted into the card slot 11c through the slot 12d, and the bayonet 15 is also inserted into the plug-in portion 201, that is, a part of the bayonet 15 is located in the plug-in portion 201, and a part is located in the card slot 11c, and then the anti-slip ring 12 is moved so that the slot 12d and the bayonet 15 are at least partially offset, so that the anti-slip ring 12 at least partially covers the bayonet 15. Under the action of the self-weight of the medical device, the medical device is hung on the bayonet 15 through the plug-in portion 201, and the bayonet 15 bears at least part of the weight of the medical device.

[0141] It should be noted that the above-mentioned movement includes translation and / or rotation.

[0142] When the anti-slip ring 12 blocks the bayonet 15 , the bayonet 15 is not easy to slip out under the cover of the anti-slip ring 12 . Thus, the bayonet 15 is not easy to be separated from the plug-in portion 201 , and the medical device is not easy to fall, thereby improving the reliability and safety of the medical device.

[0143] For example, see Fig.10 A convex ring 200b or a limiting ring groove is provided on the outer periphery of the plug-in part 201. When the bayonet 15 abuts against the bottom of the convex ring 200b or is inserted into the limiting ring groove, the plug-in part 201 is hooked on the bayonet 15 through the convex ring 200b or the limiting ring groove. In this way, the plug-in part 201 can be easily rotated in the plug-in cavity 11a, thereby driving the medical device to rotate.

[0144] It should be noted that the remaining structures of the support arm of this embodiment may adopt the structures of the support arm of any of the above embodiments, which will not be described in detail here.

[0145] An embodiment of the present application provides a surgical lamp, including a lamp head assembly and a support arm 100 of any embodiment of the present application.

[0146] The lamp holder assembly includes a lamp holder, a connecting arm 200 and a plurality of light sources arranged on the lamp holder. The light sources are used to project illumination light to the surgical area. The lamp holder is connected to the connecting arm 200.

[0147] See also Figure 4 The connecting arm 200 is connected with a plug-in portion 201, and the outer periphery of the plug-in portion 201 has a convex ring 200b or a limiting ring groove. When the plug-in portion 201 is inserted into the plug-in cavity 11a and the bayonet 15 abuts against the bottom of the convex ring 200b or is inserted into the limiting ring groove, the lamp holder assembly is hung on the bayonet 15 through the plug-in portion 201, and the lamp holder assembly can rotate relative to the joint 11. In other words, the lamp holder is connected to the support arm 100 through the connecting arm 200.

[0148] The surgical lamp of the present embodiment connects the support arm 100 and the connecting arm through the bayonet 15, so that the lamp head assembly can be connected to the support arm 100 and rotate around the axis of the plug-in portion 201. It should be noted that the type of surgical lamp is not limited, for example, it can be a shadowless lamp.

[0149] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0150] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A support arm, characterized in that: include: Used to connect the plug of medical equipment. The arm body has a joint, the interior of the joint has an inserting cavity, the inserting cavity is used for the inserting part to be inserted, and the side wall of the joint is provided with a card slot; Bayonet; An anti-drop ring having a slot and movably sleeved on the outer circumference of the joint to move between at least a first position and a second position; When in the first position, the slot is communicated with the card slot, so that the card pin can be inserted into the card slot through the slot to cooperate with the plug-in portion, so that the plug-in portion is hooked on the card pin and the plug-in portion can rotate relative to the connector; In the second position, the anti-drop ring at least partially covers the bayonet.

2. The support arm according to claim 1, characterized in that: A convex ring or a limiting ring groove is arranged on the outer periphery of the plug-in part. When the bayonet pin abuts against the bottom of the convex ring or is inserted into the limiting ring groove, the plug-in part is hooked on the bayonet pin through the convex ring or the limiting ring groove.

3. The support arm according to claim 1, characterized in that: The support arm further comprises a connecting piece, the anti-drop ring is connected to the joint via the connecting piece, and can be fixed in the second position by the connecting piece.

4. The support arm according to claim 3, characterized in that: The joint includes an outer shell and an inner tube, the outer shell is sleeved on the outer circumference of the inner tube, and the slot passes through the side wall of the outer shell and the side wall of the inner tube; the side wall of the outer shell is provided with an avoidance groove, and the anti-slip ring is provided with a connecting hole, one end of the connecting member passes through the connecting hole and the avoidance groove, when one end of the connecting member is connected to the inner tube, the connecting member fixes the anti-slip ring in the second position, and when one end of the connecting member is separated from the inner tube, the anti-slip ring can drive the connecting member to move along the avoidance groove.

5. The support arm according to claim 4, characterized in that: The connecting member includes a first connecting section that is gap-fitted with the connecting hole, and a second connecting section that is used to connect to the inner tube. The second connecting section can be threadedly fitted with the connecting hole and pass through the connecting hole. The width of the avoidance groove is greater than the diameter of the second connecting section. When the second connecting section is separated from the inner tube, the second connecting section is accommodated in the avoidance groove.

6. The support arm according to claim 4, characterized in that: The connecting piece includes a first connecting section that is gap-fitted with the connecting hole, and a second connecting section that is used to connect to the inner tube. The second connecting section can be threadedly fitted with the connecting hole and pass through the connecting hole. At least adjacent to the first connecting section, the diameter of the second connecting section is greater than the diameter of the first connecting section; the length of the first connecting section is greater than the depth of the connecting hole and the corresponding part thereof, and the length of the second connecting section is less than the distance between the inner wall of the anti-slip ring and the outer wall of the inner tube, and greater than the distance between the inner wall of the anti-slip ring and the outer wall of the outer shell.

7. The support arm according to claim 6, characterized in that: The connector also includes an end cap, the first connecting section connects the second connecting section and the end cap, and the sum of the lengths of the end cap and the first connecting section is greater than the wall thickness of the anti-slip ring.

8. The support arm according to any one of claims 5 to 7, characterized in that: The first connecting section is a non-threaded section, the side wall of the inner tube is provided with a threaded hole, and the second connecting section is a threaded section and is used to achieve threaded connection with the threaded hole.

9. The support arm according to claim 6 or 7, characterized in that: The hole diameter of the connecting hole is larger than the outer diameter of the first connecting section, and the hole wall of the connecting hole is provided with an internal thread for threaded engagement with the second connecting section when the second connecting section passes through the connecting hole.

10. The support arm according to claim 4, characterized in that: The distance between the outer wall of the inner tube and the outer wall of the anti-slip ring is smaller than the length of the connecting piece. When the connecting piece is separated from the inner tube, the connecting piece protrudes from the outer wall of the anti-slip ring. When the connecting piece fixes the anti-slip ring in the second position, the connecting piece does not extend beyond the outer wall of the anti-slip ring.

11. The support arm according to claim 4, characterized in that: The avoidance groove is an arc groove extending along the circumference of the shell, or a curved groove extending along the circumference and axial direction of the shell, or includes a plurality of groove segments extending along the circumference and axial direction of the shell and connected to each other; When the connecting member is separated from the inner tube and is inserted into the avoidance groove, the cooperation between the avoidance groove and the connecting member defines the movement trajectory of the anti-slip ring.

12. The support arm according to claim 1, characterized in that The joint includes a first joint segment and a second joint segment, the outer diameter of the second joint segment is smaller than the outer diameter of the first joint segment, a shoulder is formed at the connection between the first joint segment and the second joint segment, the anti-slip ring surrounds the outer circumference of the second joint segment, and the inner diameter of the anti-slip ring is smaller than the outer diameter of the first joint segment; the slot is arranged on the second joint segment, the anti-slip ring moves along its axial direction to a position in contact with the shoulder and / or moves to a position in contact with the medical device, and the anti-slip ring at least partially blocks the bayonet.

13. The support arm according to claim 4, characterized in that: The support arm further comprises a protective sleeve, which is sleeved on the outer circumference of the joint and can move along the axial direction of the anti-slip ring. The protective sleeve has an installation position and an avoidance position. In the installation position, the protective sleeve is sleeved on the outer circumference of the anti-slip ring and blocks the slot; in the avoidance position, the slot is exposed; When the connecting piece is separated from the inner tube, a portion of the connecting piece protrudes from the outer wall of the anti-slip ring to limit the axial movement of the protective sleeve.

14. The support arm according to claim 13, characterized in that The protective sleeve can rotate relative to the anti-drop ring and the joint.

15. The support arm according to claim 14, characterized in that The circumferential outer surface of the joint is provided with an elastic buckle, and the inner wall of the protective sleeve is provided with a first positioning groove; when the protective sleeve is located at the installation position, a part of the elastic buckle is inserted into the first positioning groove to constrain the protective sleeve axially at the installation position.

16. The support arm according to claim 15, characterized in that The inner wall of the protective sleeve is provided with a second positioning groove. When the protective sleeve is located at the avoidance position, a part of the elastic buckle is inserted into the second positioning groove to constrain the protective sleeve in the avoidance position along the axial direction.

17. The support arm according to any one of claims 13 to 16, characterized in that The elastic buckle comprises a spring sheet and a protrusion arranged on the outer surface of the spring sheet, the end of the spring sheet close to the anti-slip ring is a free end, and the end away from the anti-slip ring is a fixed end.

18. The support arm according to claim 1, characterized in that The joint comprises a first joint section and a second joint section, the outer diameter of the second joint section is smaller than the outer diameter of the first joint section, a shoulder is formed at the connection between the first joint section and the second joint section, the anti-slip ring surrounds the outer circumference of the second joint section, and the inner diameter of the anti-slip ring is smaller than the outer diameter of the first joint section; the slot is arranged on the second joint section, The medical device has a top surface facing the stop shoulder, and the top surface is used to contact the anti-slip ring to prevent the anti-slip ring from continuing to move toward the medical device in the axial direction; The distance between the clamping groove and the blocking shoulder, and the distance between the clamping groove and the top surface are both smaller than the length of the anti-slip ring along the axial direction thereof.

19. The support arm according to claim 18, characterized in that The length of the anti-drop ring along its axial direction does not exceed the length of the second joint segment.

20. The support arm according to claim 18, characterized in that The outer diameter of the anti-slip ring is not greater than the outer diameter of the first joint segment.

21. The support arm according to claim 1, characterized in that The support arm also includes a protective sleeve, and the protective sleeve has an installation position. At the installation position, the protective sleeve is sleeved on the outer periphery of the anti-slip ring and covers the slot.

22. The support arm according to claim 21, characterized in that The axial length of the protective sleeve is greater than the axial length of the anti-slip ring. When the protective sleeve is located at the installation position, the ends of the anti-slip ring at opposite ends along the axial direction do not exceed the ends of the protective sleeve at opposite ends along the axial direction.

23. The support arm according to claim 21, characterized in that The circumferential outer surface of the joint is provided with an elastic buckle, and the inner wall of the protective sleeve is provided with a first positioning groove; when the protective sleeve is located at the installation position, a part of the elastic buckle is inserted into the first positioning groove, so as to constrain the protective sleeve at least axially at the installation position.

24. The support arm according to claim 21, characterized in that The protective sleeve can be moved upward along the axial direction of the anti-slip ring to an escape position, and the slot is exposed at the escape position.

25. The support arm according to claim 24, characterized in that The circumferential outer surface of the joint is provided with an elastic buckle, and the inner wall of the protective sleeve is provided with a second positioning groove. When the protective sleeve is located in the avoidance position, a part of the elastic buckle is inserted into the second positioning groove to constrain the protective sleeve at least axially in the avoidance position.

26. The support arm according to claim 23 or 25, characterized in that The elastic buckle comprises a spring sheet and a protrusion arranged on the outer surface of the spring sheet, the end of the spring sheet close to the anti-slip ring is a free end, and the end away from the anti-slip ring is a fixed end.

27. The support arm according to claim 21, characterized in that The joint includes a first joint section and a second joint section, the second joint section is connected to the lower end of the first joint section, and the outer diameter of the second joint section is smaller than the outer diameter of the first joint section. The anti-slip ring surrounds the outer circumference of the second joint segment, and the inner diameter of the anti-slip ring is smaller than the outer diameter of the first joint segment; the inner diameter of the protective sleeve is larger than the outer diameter of the first joint segment and larger than the outer diameter of the anti-slip ring.

28. The support arm according to claim 27, characterized in that The axial length of the anti-slip ring does not exceed the length of the second joint segment.

29. The support arm according to claim 27, characterized in that The length of the protective sleeve along the axial direction is greater than the length of the anti-slip ring along the axial direction.

30. The support arm according to claim 27, characterized in that A stop shoulder is formed at the connection between the first joint section and the second joint section, and the medical device has a top surface facing the stop shoulder, and the top surface is used to contact the protective sleeve along the axial stop; The distance between the clamping groove and the blocking shoulder, and the distance between the clamping groove and the top surface are both smaller than the axial length of the anti-slip ring.

31. A support arm, characterized in that: include: The arm body has a joint, the interior of the joint has an inserting cavity, the inserting cavity is used for inserting the inserting part of the medical device, and the side wall of the joint is provided with a card slot; Bayonet; An anti-drop ring having a slot and movably sleeved on the outer circumference of the joint to move between at least a first position and a second position; In the first position, the slot is connected to the card slot so that the card pin can be inserted into the card slot through the slot to cooperate with the plug-in portion of the medical device; in the second position, the anti-slip ring at least partially covers the card pin.

32. The support arm according to claim 31, characterized in that The support arm comprises a connecting piece, the anti-drop ring is connected to the joint via the connecting piece, and can be fixed in the second position by the connecting piece.

33. The support arm according to claim 32, characterized in that The joint includes an outer shell and an inner tube, the outer shell is sleeved on the outer circumference of the inner tube, and the slot passes through the side wall of the outer shell and the side wall of the inner tube; the side wall of the outer shell is provided with an avoidance groove, and the anti-slip ring is provided with a connecting hole, one end of the connecting member passes through the connecting hole and the avoidance groove, when one end of the connecting member is connected to the inner tube, the connecting member fixes the anti-slip ring in the second position, and when one end of the connecting member is separated from the inner tube, the anti-slip ring can drive the connecting member to move along the avoidance groove.

34. The support arm according to claim 33, characterized in that The connecting member includes a first connecting section that is gap-fitted with the connecting hole, and a second connecting section that is used to connect to the inner tube. The second connecting section can be threadedly fitted with the connecting hole and pass through the connecting hole. The width of the avoidance groove is greater than the diameter of the second connecting section. When the second connecting section of the connecting member is separated from the inner tube, the second connecting section is accommodated in the avoidance groove.

35. The support arm according to claim 33, characterized in that The connecting piece includes a first connecting section that is gap-fitted with the connecting hole, and a second connecting section that is used to connect to the inner tube. The second connecting section can be threadedly fitted with the connecting hole and pass through the connecting hole. At least adjacent to the first connecting section, the diameter of the second connecting section is greater than the diameter of the first connecting section; the length of the first connecting section is greater than the depth of the connecting hole and the corresponding part thereof, and the length of the second connecting section is less than the distance between the outer wall of the inner tube and the inner wall of the anti-slip ring, and greater than the distance between the inner wall of the anti-slip ring and the outer wall of the outer shell.

36. The support arm according to claim 35, characterized in that The connector also includes an end cap, the first connecting section connects the second connecting section and the end cap, and the sum of the lengths of the end cap and the first connecting section is greater than the wall thickness of the anti-slip ring.

37. The support arm according to any one of claims 34 to 36, characterized in that: The first connecting section is a non-threaded section, the side wall of the inner tube is provided with a threaded hole, and the second connecting section is a threaded section and is used to achieve threaded connection with the threaded hole.

38. A support arm according to claim 35 or 36, characterized in that The hole diameter of the connecting hole is larger than the outer diameter of the first connecting section, and the hole wall of the connecting hole is provided with an internal thread for threaded engagement with the second connecting section when the second connecting section passes through the connecting hole.

39. The support arm according to claim 33, characterized in that The distance from the outer wall of the inner tube to the outer wall of the anti-slip ring is less than the length of the connecting piece. When the connecting piece is separated from the inner tube, the connecting piece protrudes from the outer wall of the anti-slip ring. When the connecting piece fixes the anti-slip ring in the second position, the connecting piece does not extend beyond the outer wall of the anti-slip ring.

40. A surgical lamp, characterized in that: include: A lamp head assembly, comprising a lamp holder, a connecting arm, and a plurality of light sources arranged on the lamp holder, the light sources being used to project illumination light to the surgical area, the lamp holder being connected to the connecting arm; And the support arm described in any one of claims 1-39, the connecting arm is connected with a plug-in part, the outer periphery of the plug-in part has a convex ring or a limiting ring groove, when the plug-in part abuts against the bottom of the convex ring or is inserted into the limiting ring groove, the lamp head assembly is hung on the pin through the plug-in part, and the lamp head assembly can rotate relative to the joint.

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