Knob screw assembly on medical instrument

Abstract

The utility model provides a knob screw assembly on a medical instrument, and belongs to the technical field of knob screws. The knob screw assembly on the medical instrument comprises a knob screw. The knob screw comprises a threaded rod, a knob head, a transmission block and a limiting rod, during use, when the knob head and the threaded rod need to be detached, the limiting rod is pulled in the direction away from the threaded rod, the limiting rod can be pulled out of the threaded rod and the transmission block, then the knob head can be pulled in the direction away from the threaded rod, and the knob head is pulled out of the transmission block. The rotary knob head and the threaded rod can be detached by pulling the limiting rod, when the rotary knob head or the threaded rod is damaged, the rotary knob head and the threaded rod do not need to be replaced together, the maintenance cost can be reduced, the rotary knob head rotates the threaded rod through the transmission block, the rotary knob head can bear large torsion, and the rotary knob head is convenient to use. And the knob head cannot be penetrated by the threaded rod and is not easy to damage, so that the practicability is relatively high.

Description

Technical Field

[0001] The present application relates to the field of knobs and screws, and in particular, to a knob and screw assembly on a medical device. Background Art

[0002] The knob screw is a combination of a knob and a screw, and can be simply understood as a knob bolt to a certain extent. In medical devices, the knob screw is mainly used in parts that need to be disassembled frequently. In the existing knob screw technology, there are two main types of connections between the knob and the screw. One is a direct fixed connection and one-piece molding. The fixed connection and one-piece molding can withstand greater torque, but the fixed connection makes it difficult to separate the knob and the screw. When the knob or the screw is damaged, the knob and the screw can only be replaced together, and the maintenance cost is high. The other is a threaded connection between the knob and the screw. The threaded connection is convenient for disassembly and replacement, but the knob cannot withstand greater torque. If the knob and the screw are over-tightened, the knob is easily pierced by the screw, the knob is easily damaged, and its practicality is low. Utility Model Content

[0003] In order to make up for the above deficiencies, the present application provides a knob screw assembly on a medical device, aiming to improve the problems of high maintenance costs and easy damage of the knob.

[0004] An embodiment of the present application provides a knob-screw assembly for a medical device, including a knob-screw.

[0005] The knob screw includes a threaded rod, a knob head, a transmission block and a limit rod. One end of the transmission block is fixedly connected to the center of the knob head. The cross-section of the transmission block is polygonal. The transmission block is slidably inserted into the interior of one end of the threaded rod. The limit rod is slidably inserted into the interior of one end of the threaded rod. The bottom end of the limit rod is magnetically attracted to the interior of the threaded rod. The rod body of the limit rod slides through the block body of the transmission block.

[0006] In a specific embodiment, a limiting sleeve is provided on one side of the knob head, and the limiting sleeve is slidably sleeved on the outside of one end of the threaded rod.

[0007] In a specific embodiment, a transmission groove is opened inside one end of the threaded rod, and the transmission block is slidably inserted into the transmission groove.

[0008] In a specific embodiment, the cross section of the transmission groove is polygonal, and the cross sections of the transmission groove and the transmission block are both rectangular.

[0009] In a specific embodiment, the rod body of the limiting rod slides through the sleeve wall of the limiting sleeve, and an end plate is provided at the top end of the limiting rod, and the end plate is located above the limiting sleeve.

[0010] In a specific embodiment, a first limiting hole is opened inside one end of the threaded rod, the first limiting hole is located above the transmission groove, the bottom end of the first limiting hole is connected to the transmission groove, and the rod body of the limiting rod slides through the inside of the first limiting hole.

[0011] In a specific embodiment, a second limiting hole is opened inside one end of the threaded rod, the second limiting hole is located below the transmission groove, the top of the second limiting hole is connected to the transmission groove, and the bottom end of the limiting rod is slidably inserted into the inside of the second limiting hole.

[0012] In a specific embodiment, a first magnet is provided inside the second limiting hole, a second magnet is provided at the bottom end of the limiting rod, and the second magnet is magnetically attracted to the first magnet.

[0013] In a specific embodiment, a through hole is formed in the body of the transmission block, and the body of the limiting rod slides through the interior of the through hole.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a knob-screw assembly on a medical device obtained by the above design. When the knob head and the threaded rod need to be separated during use, the limiting rod can be pulled in a direction away from the threaded rod to draw the limiting rod out of the inside of the threaded rod and the transmission block. Then, the knob head can be pulled in a direction away from the threaded rod, and the transmission block can be drawn out of the inside of the transmission groove. The knob head and the threaded rod can be separated by pulling the limiting rod. When the knob head or the threaded rod is damaged, there is no need to replace the knob head and the threaded rod together, which can reduce maintenance costs. The knob head rotates the threaded rod through the transmission block, so that the knob head can withstand a larger torque, the knob head will not be penetrated by the threaded rod, the knob head is not easy to be damaged, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram from a first perspective of a knob and screw assembly on a medical device provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of the knob and screw assembly on the medical device provided in an embodiment of the present application from a second perspective;

[0018] Figure 3 A schematic diagram of a cross-sectional structure of a threaded rod provided in an embodiment of the present application;

[0019] Figure 4 A schematic diagram of the transmission block structure provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the transmission slot structure provided in an embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of the partial cross-sectional structure of the limit sleeve and transmission block provided in the embodiment of the present application.

[0022] In the figure: 100 - knob screw; 110 - threaded rod; 111 - transmission groove; 112 - first limiting hole; 113 - second limiting hole; 114 - first magnet; 120 - knob head; 121 - limiting sleeve; 130 - transmission block; 131 - through hole; 140 - limiting rod; 141 - end plate; 142 - second magnet. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0024] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] See also Figure 1 The present application provides a knob screw assembly on a medical device, including a knob screw 100.

[0026] See also Figure 1-6 The knob screw 100 includes a threaded rod 110, a knob head 120, a transmission block 130, and a limiting rod 140. A limiting sleeve 121 is provided on one side of the knob head 120. The limiting sleeve 121 is slidably mounted on the outside of one end of the threaded rod 110. One end of the transmission block 130 is fixedly connected to the center of the knob head 120. The transmission block 130 is located at the center of one side of the knob head 120 and at the center of the interior of the limiting sleeve 121. The cross-section of the transmission block 130 is polygonal and the transmission block 130 is slidably inserted into the interior of one end of the threaded rod 110.

[0027] During the specific setting, a transmission groove 111 is opened inside one end of the threaded rod 110, and the transmission block 130 is slidably inserted into the inside of the transmission groove 111. The cross-section of the transmission groove 111 is polygonal, and the cross-sections of the transmission groove 111 and the transmission block 130 are both rectangular. The rod body of the limiting rod 140 slides through the sleeve wall of the limiting sleeve 121, and an end plate 141 is provided at the top of the limiting rod 140. The end plate 141 is located above the limiting sleeve 121, and the end plate 141 facilitates the user to pull the limiting rod 140.

[0028] In the present application, the limiting rod 140 is slidably inserted into the interior of one end of the threaded rod 110, and a first limiting hole 112 is opened inside one end of the threaded rod 110. The first limiting hole 112 is located above the transmission groove 111, and the bottom end of the first limiting hole 112 is connected to the transmission groove 111. The rod body of the limiting rod 140 slides through the interior of the first limiting hole 112, and a second limiting hole 113 is opened inside one end of the threaded rod 110. The second limiting hole 113 is located below the transmission groove 111, and the top end of the second limiting hole 113 is connected to the transmission groove 111. The bottom end of the limiting rod 140 is slidably inserted into the interior of the second limiting hole 113.

[0029] In this embodiment, the bottom end of the limiting rod 140 is magnetically attracted to the inside of the threaded rod 110, the inside of the second limiting hole 113 is provided with a first magnet 114, the bottom end of the limiting rod 140 is provided with a second magnet 142, the second magnet 142 is magnetically attracted to the first magnet 114, the rod body of the limiting rod 140 slides through the block body of the transmission block 130, the block body of the transmission block 130 is provided with a through hole 131, and the rod body of the limiting rod 140 slides through the inside of the through hole 131.

[0030] Specifically, the working principle of the knob screw assembly on the medical device is as follows: when in use, the knob head 120 can drive the transmission block 130 and the limiting rod 140 to rotate, thereby driving the threaded rod 110 to rotate, and then the threaded rod 110 can be threaded into the required position. When the knob head 120 and the threaded rod 110 need to be separated, the end plate 141 is pulled away from the first magnet 114, and then the limiting rod 140 and the second magnet 142 are pulled, so that the second magnet 142 can be separated from the first magnet 114, and then the limiting rod 140 and the second magnet 142 can be pulled out of the second limiting hole 113, the through hole 131 and the first limiting hole The interior of 112 can then be pulled into the direction away from the threaded rod 110, and the transmission block 130 can be pulled out of the transmission groove 111, and the knob head 120 and the threaded rod 110 can be separated by pulling the limit rod 140. Then, when the knob head 120 or the threaded rod 110 is damaged, there is no need to replace the knob head 120 and the threaded rod 110 together, which can reduce maintenance costs. The knob head 120 rotates the threaded rod 110 through the transmission block 130, so that the knob head 120 can withstand a larger torque, and the knob head 120 will not be penetrated by the threaded rod 110. The knob head 120 is not easy to be damaged and has high practicality.

[0031] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A knob screw assembly on a medical device, characterized in that: include A knob screw (100) includes a threaded rod (110), a knob head (120), a transmission block (130) and a limiting rod (140), one end of the transmission block (130) is fixedly connected to the center of the knob head (120), the cross section of the transmission block (130) is polygonal, the transmission block (130) is slidably inserted into the interior of one end of the threaded rod (110), the limiting rod (140) is slidably inserted into the interior of one end of the threaded rod (110), the bottom end of the limiting rod (140) is magnetically attracted to the interior of the threaded rod (110), and the rod body of the limiting rod (140) slides through the block body of the transmission block (130).

2. The knob screw assembly on a medical device according to claim 1, characterized in that: A limiting sleeve (121) is provided on one side of the knob head (120), and the limiting sleeve (121) is slidably sleeved on the outside of one end of the threaded rod (110).

3. The knob screw assembly on a medical device according to claim 1, characterized in that: A transmission groove (111) is provided inside one end of the threaded rod (110), and the transmission block (130) is slidably inserted into the transmission groove (111).

4. The knob screw assembly on a medical device according to claim 3, characterized in that: The cross section of the transmission groove (111) is polygonal, and the cross sections of the transmission groove (111) and the transmission block (130) are both rectangular.

5. The knob screw assembly on a medical device according to claim 2, characterized in that: The rod body of the limiting rod (140) slides through the sleeve wall of the limiting sleeve (121), and an end plate (141) is provided at the top end of the limiting rod (140), and the end plate (141) is located above the limiting sleeve (121).

6. The knob screw assembly on a medical device according to claim 3, characterized in that: A first limiting hole (112) is provided inside one end of the threaded rod (110), the first limiting hole (112) is located above the transmission groove (111), the bottom end of the first limiting hole (112) is connected to the transmission groove (111), and the rod body of the limiting rod (140) slides through the inside of the first limiting hole (112).

7. The knob screw assembly on a medical device according to claim 3, characterized in that: A second limiting hole (113) is provided inside one end of the threaded rod (110), and the second limiting hole (113) is located below the transmission groove (111). The top end of the second limiting hole (113) is connected to the transmission groove (111), and the bottom end of the limiting rod (140) is slidably inserted into the inside of the second limiting hole (113).

8. The knob screw assembly on a medical device according to claim 7, characterized in that: A first magnet (114) is provided inside the second limiting hole (113), a second magnet (142) is provided at the bottom end of the limiting rod (140), and the second magnet (142) is magnetically attracted to the first magnet (114).

9. The knob screw assembly on a medical device according to claim 1, characterized in that: The block body of the transmission block (130) is provided with a through hole (131), and the rod body of the limiting rod (140) slides through the interior of the through hole (131).

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