Rotary joint structure, rotary assembly and headstock connecting piece

Abstract

The utility model relates to the technical field of medical instruments, in particular to a rotary joint structure, a rotary assembly and a headstock connecting piece, the rotary joint structure is arranged between two contact surfaces of the headstock connecting piece and comprises a plurality of convex balls arranged on one contact surface and a plurality of concave balls arranged on the other contact surface, and when the two contact surfaces are pressed tightly, the convex balls are matched with the concave balls, so that the two contact surfaces are locked. Convex ball and concave ball type rotary adjustment is adopted for the contact surface design, adjustment is convenient, and use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially relate to a rotary joint structure, rotary assembly and headstock connecting piece. BACKGROUND

[0002] The main doctor is very careful when operating for the patient, needs the special headstock connecting piece in the operation process, guarantees the stability of the head, and is convenient for the smooth operation.

[0003] The contact surface of the rotary position of the existing headstock connecting piece adopts the gear and the gear cooperation, is inconvenient to adjust in the clinical use and brings certain risk to the operation. UTILITY MODEL CONTENT

[0004] In order to solve the inconvenient adjustment of the headstock connecting piece of prior art and adopt the gear, the utility model provides a rotary joint structure, rotary assembly and headstock connecting piece convenient to adjust.

[0005] The utility model solves the technical scheme that the technical problem adopts:

[0006] A kind of rotary joint structure, it is arranged between the two contact surfaces of headstock connecting piece, including being arranged in several convex balls of one contact surface and being arranged on several concave balls of another contact surface, when two contact surfaces are compressed, convex ball cooperates with concave ball to realize the locking of two contact surfaces.

[0007] Further, the convex ball is evenly distributed along one of the contact surfaces, and the concave ball is closely arranged on the other contact surface.

[0008] A kind of rotary assembly, including the rotary joint structure, including the gasket between two relatively rotatable components, the gasket is provided with the concave ball on both sides, and the convex ball is arranged on the component.

[0009] A kind of headstock connecting piece, including the rotary assembly as described above, including square guide rod, the square guide rod is slidably installed with big arm connecting head, the big arm connecting head is connected with force arm, the force arm is connected with Z-shaped connecting block, the Z-shaped connecting block is connected with multifunctional chuck, multifunctional chuck is connected with connecting arm, and connecting arm is used to connect head arch, wherein, the gasket is arranged between the big arm connecting head and the force arm, between the force arm and the Z-shaped connecting block, between the Z-shaped connecting block and the multifunctional chuck.

[0010] Further, the force arm includes big arm fixed block and big arm adjusting arm, and the big arm fixed block is located on one side of the big arm connecting head and the Z-shaped connecting block, and the big arm adjusting arm is located on the other side of the big arm connecting head and the Z-shaped connecting block.

[0011] Further, the head frame connecting piece further comprises two first flat position studs and one second flat position stud, one of the first flat position studs passes through the heavy arm fixing block, the gasket, the heavy arm connecting head, the gasket and the heavy arm adjusting arm in sequence, the other flat position stud passes through the heavy arm fixing block, the gasket, the Z-shaped connecting block, the gasket and the heavy arm adjusting arm in sequence, the through hole of the heavy arm fixing block is matched with the shape of the first flat position stud, the through holes for the first flat position stud to pass through on the gasket, the heavy arm connecting head and the heavy arm adjusting arm are circular holes, the second flat position stud passes through the Z-shaped connecting block, the gasket and the multifunctional chuck in sequence, the through hole of the Z-shaped connecting block is matched with the shape of the second flat position stud, the through holes for the second flat position stud to pass through on the gasket and the multifunctional chuck are circular holes, and the outgoing ends of the first flat position stud and the second flat position stud are correspondingly matched with T-shaped lock wheels.

[0012] Further, the two sides of the heavy arm connecting head and the Z-shaped connecting block are provided with convex rings, and the outer diameter of the convex ring is matched with the inner diameter of the gasket.

[0013] Further, the connecting arm is provided with a lock groove, the multifunctional chuck is threadedly connected with a hexagonal fixing bolt, and the hexagonal fixing bolt is inserted into the lock groove.

[0014] Further, the connecting arm is provided with a tooth surface, the connecting arm is provided with an anti-falling hand wheel, the anti-falling hand wheel is provided with an anti-falling clamping groove, the connecting arm is provided with a pin hole, a cylindrical pin is arranged in the pin hole, and the cylindrical pin is clamped in the clamping groove.

[0015] Further, the through hole of the heavy arm connecting head for passing through the square guide rod is matched with the square guide rod, the heavy arm connecting head is threadedly connected with a fixing bolt, and the fixing bolt abuts against the square guide rod.

[0016] Beneficial effects:

[0017] (1) The contact surface of the utility model is designed to adopt convex ball and concave ball type rotary adjustment, which is easy to adjust and more convenient to use;

[0018] (2) The head frame can swing forward and backward, left and right, and lift up and down according to the operation requirement, so that the best head operation fixing position can be obtained, the time of operation preparation work is greatly shortened, and the doctor's physical strength is reduced;

[0019] (3) The head frame connecting piece adopts double-arm support, and is more firm and stable in use, so that unnecessary operation risks are reduced. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the premise of not paying creative effort.

[0021] Figure 1 It is a front view of the head frame connecting piece of the present application.

[0022] Figure 2 It is a side view of the head frame connecting piece of the present application.

[0023] Figure 3 It is a perspective view of the head frame connecting piece of the present application.

[0024] Figure 4 It is a front structure schematic view of the force arm connecting head.

[0025] Figure 5 It is a side structure schematic view of the force arm connecting head.

[0026] Figure 6 It is a first side structure schematic view of the force arm fixing block.

[0027] Figure 7 It is a Figure 6 It is a sectional view along A-A.

[0028] Figure 8 It is a second side structure schematic view of the force arm fixing block.

[0029] Figure 9 It is a side structure schematic view of the force adjusting arm.

[0030] Figure 10 It is a Figure 9 It is a sectional view along B-B.

[0031] Figure 11 It is a structure schematic view of the first flat position stud.

[0032] Figure 12 It is a cross-sectional schematic view of the first flat position stud.

[0033] Figure 13 It is a schematic view of the gasket.

[0034] Figure 14 It is a longitudinal cross-sectional schematic view of the gasket.

[0035] Figure 15 It is a first side structure schematic view of the Z-shaped connecting block.

[0036] Figure 16 It isFigure 15 Sectional view along C-C;

[0037] Figure 17 Second side structure schematic diagram of Z-shaped connecting block;

[0038] Figure 18 Side structure schematic diagram of multifunctional chuck;

[0039] Figure 19 Front structure schematic diagram of multifunctional chuck;

[0040] Figure 20 Structure schematic diagram of connecting arm.

[0041] 1 square guide rod, 2 heavy arm connecting head, 3 heavy arm fixed block, 4 heavy arm adjusting arm, 5 first flat position stud, 6 gasket, 7 T-shaped lock wheel, 8 Z-shaped connecting block, 9 multifunctional chuck, 10 second flat position stud, 11 hexagonal fixed bolt, 12 connecting arm, 121 lock groove, 13 anti-dropping hand wheel, 14 cylindrical pin, 15 fixed bolt. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0043] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0044] The foregoing description, for purposes of explanation, sets forth specific values and arrangements of components and steps that are subject to many variations in the light of specific circumstances and / or material or workpiece shapes. Such examples, while indicating preferred embodiments, are not intended to limit or restrict the various concepts taught herein. It will be appreciated that the dimensions of the parts shown in the drawings are not necessarily to scale, and have been shown as such for illustrative purposes only. Techniques, methods, and apparatus known to those of ordinary skill in the art can not be discussed in detail, but are contemplated as being part of the specification, where appropriate. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative of the examples, and not as a limitation thereon. Thus, other examples of the exemplary embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the disclosure, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures where it is shown and / or discussed.

[0045] In the description of the present application, it is necessary to understand that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0046] For the convenience of description, spatial relative terms such as "above", "upper", "on", "top", "bottom", etc. can be used herein to describe the spatial relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0047] In addition, it should be noted that the use of the words "first", "second" and the like to describe various components is merely intended to facilitate the differentiation of the corresponding components, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as a limitation on the scope of protection of the present application.

[0048] A rotary joint structure is arranged between two contact surfaces of a headstock connector, comprising a plurality of convex balls arranged on one of the contact surfaces and a plurality of concave balls arranged on the other contact surface, when the two contact surfaces are pressed, the convex balls and the concave balls are matched to realize the locking of the two contact surfaces.

[0049] The convex balls are evenly distributed along the circumferential direction of one of the contact surfaces, and the concave balls are closely arranged on the other contact surface.

[0050] The convex balls and the concave balls can be arranged on two relatively rotatable components respectively, as a preferred embodiment of the utility model, a rotary assembly comprises the rotary joint structure, a gasket 6 is arranged between the two relatively rotatable components, the gasket 6 is provided with concave balls on both sides, and the components are provided with convex balls.

[0051] A headstock connector, such as Figures 1-20 , comprises the rotary assembly, and further comprises a square guide rod 1, the square guide rod 1 is slidably connected with a heavy arm connector 2, the heavy arm connector 2 is connected with a force arm, the force arm is connected with a Z-shaped connecting block 8, the Z-shaped connecting block 8 is connected with a multifunctional chuck 9, the multifunctional chuck 9 is connected with a connecting arm 12, and the connecting arm 12 is used for connecting a headstock, wherein the gasket 6 is arranged between the heavy arm connector 2 and the force arm, the force arm and the Z-shaped connecting block 8, and the Z-shaped connecting block 8 and the multifunctional chuck 9.

[0052] The force arm comprises a heavy arm fixed block 3 and a heavy arm adjusting arm 4, the heavy arm fixed block 3 is located on one side of the heavy arm connector 2 and the Z-shaped connecting block 8, and the heavy arm adjusting arm 4 is located on the other side of the heavy arm connector 2 and the Z-shaped connecting block 8.

[0053] The headstock connector further comprises two first flat position studs 5 and one second flat position stud 10, one of the first flat position studs 5 passes through the heavy arm fixed block 3, the gasket 6, the heavy arm connector 2, the gasket 6 and the heavy arm adjusting arm 4 in sequence, the other flat position stud passes through the heavy arm fixed block 3, the gasket 6, the Z-shaped connecting block 8, the gasket 6 and the heavy arm adjusting arm 4 in sequence, the through hole of the heavy arm fixed block 3 is matched with the shape of the first flat position stud 5, the through holes for the first flat position stud 5 to pass through on the gasket 6, the heavy arm connector 2 and the heavy arm adjusting arm 4 are circular holes, the second flat position stud 10 passes through the Z-shaped connecting block 8, the gasket 6 and the multifunctional chuck 9 in sequence, the through hole of the Z-shaped connecting block 8 is matched with the shape of the second flat position stud 10, and the through holes for the second flat position stud 10 to pass through on the gasket 6 and the multifunctional chuck 9 are circular holes, and the leading ends of the first flat position stud 5 and the second flat position stud 10 are correspondingly matched with a T-shaped lock wheel 7.

[0054] Convex rings are arranged on both sides of the heavy arm connector 2 and the Z-shaped connecting block 8, and the outer diameter of the convex ring is matched with the inner diameter of the gasket 6.

[0055] The connecting arm 12 is provided with a locking groove 121, and the multifunctional chuck 9 is threadedly connected with a hexagonal fixing bolt 11 which is inserted into the locking groove 121.

[0056] The connecting arm 12 is provided with a tooth surface, and the connecting arm 12 is provided with an anti-escape hand wheel 13, the anti-escape hand wheel 13 is provided with an anti-escape clamping groove, the connecting arm 12 is provided with a pin hole, and the pin hole is provided with a cylindrical pin 14 which is clamped in the clamping groove.

[0057] The through hole of the big arm connecting head 2 for passing through the square guide rod 1 is matched with the square guide rod 1, the big arm connecting head 2 is threadedly connected with a fixing bolt 15 which is abutted against the square guide rod 1.

[0058] The installation process is as follows:

[0059] Square guide rod 1 is inserted into the square hole of the large arm connector 2, and is fixed by the fixing bolt 15. Loosen the fixing bolt 15 and the square guide rod 1 can move forward and backward to adjust. Lock the fixing bolt 15 to fix the square guide rod 1 to the desired position. Then the flat position of the first flat stud 5 cooperates with the flat position of the side of the large arm fixing block 3, and the side is flush with the side. The convex ball of the large arm fixing block 3 is placed on the gasket 6. Then the center hole of the large arm fixing block 3, the center hole of the gasket 6 and the center hole of the large arm connector 2 are centered, and the installed first flat stud 5 passes through the center. At this time, a piece of gasket 6 is placed on the other side of the large arm connector 2. Then the convex ball of the large force adjusting arm 4 cooperates with the spherical surface of the gasket 6. At this time, the head of the first flat stud 5 cooperates with the T-shaped lock wheel 7. At this time, the upper end position has been installed. Then the flat position of the first flat stud 5 cooperates with the flat position of the lower end of the side of the large arm fixing block 3, and the side is flush with the side. The convex ball at the lower end of the large arm fixing block 3 is placed on a gasket 6. Then the center hole of the lower end of the large arm fixing block 3 and the center hole of the gasket 6 and the center hole of the upper end of the Z-shaped connecting block 8 are centered. At this time, the first flat stud 5 passes through the center hole. The convex ball on the other side of the upper end of the Z-shaped connecting block 8 is placed on a piece of gasket 6. Then the lower end of the large force adjusting arm 4 is centered, and the first flat stud 5 cooperates with the flat position of the lower end of the side of the large arm fixing block 3. The first flat stud 5 passes through the center. Finally, the head of the first flat stud 5 cooperates with the T-shaped lock wheel 7. At this time, the supporting arm has been installed. The flat position of the second flat stud 10 cooperates with the flat position of the lower end of the Z-shaped connecting block 8. The surface is flush with the surface. The gasket 6 is placed on the convex ball of the Z-shaped connecting block 8. The convex ball of the multifunctional chuck 9 cooperates with the concave ball of the gasket 6. The hole center is aligned. Then the second flat stud 10 passes through the center. Finally, the head of the second flat stud 10 cooperates with the T-shaped lock wheel 7. The anti-dropping hand wheel 13 is placed in the hole of the connecting arm 12. Then the cylindrical pin 14 is installed in the circular hole on the side of the connecting arm 12. After installation, the anti-dropping hand wheel 13 can be freely rotated by hand. Then the head of the connecting arm 12 is installed in the center hole of the multifunctional chuck 9. The hexagonal fixing bolt 11 is installed in the corresponding thread and hole on the side of the connecting arm 12. This is to prevent the connecting arm 12 from falling off and prevent it from falling off. Finally, the head of the second flat stud 10 cooperates with the T-shaped lock wheel 7. Locking the T-shaped lock wheel 7 can fix the connecting arm 12. Loosen the T-shaped lock wheel 7 and the connecting arm 12 can rotate 360°. At this time, the headstock connector has been completely installed.

[0060] Working principle:

[0061] Loosen the T-shaped lock wheel 7 in the middle, the square guide rod 1, the heavy arm connecting head 2, the heavy arm fixed block 3, the heavy adjusting arm 4, the first flat position stud 5, the gasket 6, the T-shaped lock wheel 7 and the fixed bolt 15 in the front section can be adjusted by rotating and swinging forward and backward, the Z-shaped connecting block 8, the multifunctional chuck 9, the second flat position stud 10, the hexagonal fixed bolt 11, the connecting arm 12, the anti-falling hand wheel 13 and the cylindrical pin 14 in the rear section can also be adjusted by rotating and swinging forward and backward;

[0062] Lock the T-shaped lock wheel 7 in the middle, the square guide rod 1, the heavy arm connecting head 2, the heavy arm fixed block 3, the heavy adjusting arm 4, the first flat position stud 5, the gasket 6, the T-shaped lock wheel 7 and the fixed bolt 15 in the front section can be fixed to the required position, the Z-shaped connecting block 8, the multifunctional chuck 9, the second flat position stud 10, the hexagonal fixed bolt 11, the connecting arm 12, the anti-falling hand wheel 13 and the cylindrical pin 14 in the rear section can also be fixed to the required ideal position.

[0063] Loosen the T-shaped lock wheel 7 farthest from the square guide rod 1, the multifunctional chuck 9 and the hexagonal fixed bolt 11, which can be adjusted by rotating and swinging, the connecting arm 12, the anti-falling hand wheel 13 and the cylindrical pin 14 can also be adjusted by rotating and swinging forward and backward or 360 degrees.

[0064] Lock the T-shaped lock wheel 7 farthest from the square guide rod 1, the multifunctional chuck 9 and the hexagonal fixed bolt 11, which can be fixed to the required position, and the connecting arm 12, the anti-falling hand wheel 13 and the cylindrical pin 14 can also be fixed to the required ideal position.

[0065] Loosen the T-shaped lock wheel 7 closest to the square guide rod 1, the square guide rod 1, the heavy arm connecting head 2 and the fixed bolt 15, which can swing forward and backward, and lock the T-shaped lock wheel 7, the square guide rod 1, the heavy arm connecting head 2 and the fixed bolt 15, which can be fixed to the required position.

[0066] Loosen the fixed bolt 15 and the square guide rod 1, which can be moved, and lock the fixed bolt 15, which can be fixed to the required position.

[0067] Most of the products on the market are made of metal or aluminum alloy materials. These materials are relatively hard and may cause some uncomfortable conditions, causing unnecessary trouble for the attending physician and some unnecessary harm to the patient. The utility model adopts PEEK material. PEEK material has good corrosion resistance, biocompatibility and superior disinfection performance, can meet high pressure high temperature steam sterilization, also can meet gamma gamma ray (irradiation) sterilization, still can keep its original property unchanged. PEEK material is light in weight and low in density, which can be comparable to aluminum alloy material and metal material; PEEK material can have penetrating X-ray, which is invisible and has no shadow in CT machine, C-arm machine and MRI scanning; the operation is more intuitive, and the doctor can reduce unnecessary surgical risks during the operation.

[0068] The whole headrest connecting piece is reasonable in design, fine in manufacture, flexible in activity, and can be disassembled and assembled at will, so that the operation range is relatively increased, and the time of preparation before operation is greatly shortened, thereby reducing the physical strength of doctors.

[0069] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A rotary joint structure characterized by: The convex balls are arranged on one of the contact surfaces in a circumferential direction, and the concave balls are arranged on the other contact surface.

2. A rotary coupling according to claim 1, wherein: The convex balls are arranged on one of the contact surfaces in a circumferential direction, and the concave balls are arranged on the other contact surface.

3. A rotary assembly comprising the rotary joint structure of claim 1 or 2, characterized by: The convex balls are arranged on one of the contact surfaces in a circumferential direction, and the concave balls are arranged on the other contact surface.

4. A headgear connector, characterized by: The rotating assembly comprises a square guide rod (1), a heavy lever connecting head (2) is slidably arranged on the square guide rod (1), a force arm is connected to the heavy lever connecting head (2), a Z-shaped connecting block (8) is connected to the force arm, a multifunctional chuck (9) is connected to the Z-shaped connecting block (8), a connecting arm (12) is connected to the multifunctional chuck (9), and the connecting arm (12) is used for connecting a head frame.

5. A headgear connection member according to claim 4, wherein: The force arm comprises a heavy lever fixing block (3) and a heavy lever adjusting arm (4), the heavy lever fixing block (3) is located on one side of the heavy lever connecting head (2) and the Z-shaped connecting block (8), and the heavy lever adjusting arm (4) is located on the other side of the heavy lever connecting head (2) and the Z-shaped connecting block (8).

6. A headgear connection piece according to claim 5, wherein: The head frame connecting piece further comprises two first flat-positioned studs (5) and one second flat-positioned stud (10), one of the first flat-positioned studs (5) passes through the heavy lever fixing block (3), the pad (6), the heavy lever connecting head (2), the pad (6) and the heavy lever adjusting arm (4) in sequence, the other flat-positioned stud passes through the heavy lever fixing block (3), the pad (6), the Z-shaped connecting block (8), the pad (6) and the heavy lever adjusting arm (4) in sequence, the through hole of the heavy lever fixing block (3) is matched with the shape of the first flat-positioned stud (5), the through holes for the first flat-positioned stud (5) to pass through on the pad (6), the heavy lever connecting head (2) and the heavy lever adjusting arm (4) are circular holes, the second flat-positioned stud (10) passes through the Z-shaped connecting block (8), the pad (6) and the multifunctional chuck (9) in sequence, the through hole of the Z-shaped connecting block (8) is matched with the shape of the second flat-positioned stud (10), the through holes for the second flat-positioned stud (10) to pass through on the pad (6) and the multifunctional chuck (9) are circular holes, and the leading ends of the first flat-positioned stud (5) and the second flat-positioned stud (10) are correspondingly matched with a T-shaped lock wheel (7).

7. A headgear connection member according to claim 6, wherein: The two sides of the heavy lever connecting head (2) and the Z-shaped connecting block (8) are provided with convex rings, and the outer diameter of the convex rings is matched with the inner diameter of the pad (6).

8. A headgear connection piece according to claim 5, wherein: The connecting arm (12) is provided with a lock groove (121), the multifunctional chuck (9) is threadedly connected with a hexagonal fixing bolt (11), and the hexagonal fixing bolt (11) is inserted into the lock groove (121).

9. A headgear connector according to claim 4, wherein: The connecting arm (12) is provided with a tooth surface, the connecting arm (12) is provided with an anti-falling hand wheel (13), the anti-falling hand wheel (13) is provided with an anti-falling slot, the connecting arm (12) is provided with a pin hole, the pin hole is provided with a cylindrical pin (14), and the cylindrical pin (14) is clamped in the slot.

10. A headgear connector according to claim 4, wherein: The through hole of the square guide rod (1) is used for passing through the big arm connecting head (2) and is matched with the square guide rod (1), the big arm connecting head (2) is screw-connected with a fixing bolt (15), and the fixing bolt (15) is abutted against the square guide rod (1).

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