Cross arm locking mechanism for operating microscope rack

Abstract

The utility model relates to a cross arm locking mechanism for an operating microscope rack, which comprises a movable connecting rod seat and a fixed connecting rod seat, a connecting rod component is arranged between the movable connecting rod seat and the fixed connecting rod seat, and the connecting rod component comprises an upper connecting rod and a lower connecting rod. The two ends of the upper connecting rod and the two ends of the lower connecting rod are rotationally connected with the movable connecting rod base and the fixed connecting rod base through pin shafts respectively, the upper connecting rod and the lower connecting rod are buckled up and down, and a locking component is arranged between the connecting rod component and the movable connecting rod base. According to the technical scheme, the locking rotary knob is arranged on the movable connecting rod base and is close to the hand operation space of a doctor, the doctor can easily and conveniently adjust the rotary knob, the operation efficiency is improved, meanwhile, the purpose of locking and positioning the small cross arm can be achieved through the locking shaft of the locking component, meanwhile, the requirement for the motion precision of the locking shaft is low, and the practicability is high. Therefore, the part machining precision of the whole locking structure can be reduced, the cost is reduced, and the economical efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a cross arm locking mechanism for a surgical microscope frame. Background Art

[0002] Existing surgical microscopes usually include fixed parts (base column, wall hanging, suspension, etc.), cross arms (large cross arms, small cross arms), balance arms and mirror bodies or other medical equipment. Surgical microscopes are mainly used for anatomy in teaching experiments, suturing of microvessels and nerves, and other delicate surgeries or inspections that require the help of a microscope.

[0003] In clinical surgery, the surgical position is flexible and changeable. In order to match the surgical position, the hovering position of the surgical microscope needs to be changed. Therefore, the small cross arm needs to be able to adjust the position up and down at will. In actual surgical operations, each hovering position (operation position) of the small cross arm needs to be stable for a long time so that the doctor can perform the operation stably. Therefore, the small cross arm needs to be able to easily adjust the position at any time and be locked and fixed at any hovering position.

[0004] The locking structure of the existing surgical microscope is generally designed on the upper and lower connecting rods of the microscope itself, and the location is far away from the doctor's operating area. During actual operation, the doctor cannot conveniently adjust the locking structure, which reduces the efficiency of the operation. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a cross arm locking mechanism for a surgical microscope frame, which provides a technical solution for quickly locking and releasing the position of the small cross arm, which can facilitate doctors to quickly lock and adjust the position of the small cross arm and improve surgical operation efficiency.

[0006] Specifically, it is a cross arm locking mechanism for a surgical microscope frame, comprising a movable connecting rod seat and a fixed connecting rod seat, a connecting rod component is provided between the movable connecting rod seat and the fixed connecting rod seat, the connecting rod component comprises an upper connecting rod and a lower connecting rod, and the two ends of the upper connecting rod and the lower connecting rod are rotatably connected to the movable connecting rod seat and the fixed connecting rod seat respectively through a pin shaft, the upper connecting rod and the lower connecting rod are buckled together up and down, a locking component is installed between the connecting rod component and the movable connecting rod seat, the locking component comprises a locking shaft mounting seat, a locking shaft, a transition plunger and a locking block, the locking shaft mounting seat is fixedly mounted on the connecting rod component, the locking block is fixedly mounted on the movable connecting rod seat, and the locking shaft mounting seat and the locking block are locked by the locking shaft and the transition plunger.

[0007] Preferably, the cross-sections of the upper connecting rod and the lower connecting rod are both U-shaped, that is, both sides of the upper connecting rod and the lower connecting rod have folded edges, and the upper and lower connecting rods are buckled together by the folded edges. The movable connecting rod seat and the fixed connecting rod seat are fixedly provided with connecting linings on one side facing the connecting rod component, and the pin shaft can pass through the connecting lining and the folded edges respectively.

[0008] Preferably, the upper end of the locking shaft mounting seat is fixedly mounted on the upper end of the inner cavity of the upper connecting rod and is located between the folded edges on both sides, the upper end of the locking block is fixedly mounted on the upper end of the inner cavity of the movable connecting rod seat and is located at the locking shaft mounting seat, the rear end of the locking shaft is rotatably connected to the locking shaft mounting seat through the locking shaft rotating shaft, the transition plunger is rotatably set on the locking block, a locking shaft sliding hole is opened at one end of the transition plunger, the front end of the locking shaft can pass through the locking shaft sliding hole and be exposed, the locking member also includes a locking knob, the locking knob passes through the movable connecting rod seat and is threadedly connected to the locking block, and the locking block realizes limited clamping of the transition plunger through the locking knob.

[0009] Preferably, the locking block body is provided with a transition plunger rotation hole for the transition plunger to pass through, and the locking block is also provided with a deformation groove connected to the transition plunger rotation hole. The lower end of the locking block is provided with a threaded section at the deformation groove, and the locking knob passes through the deformation groove of the locking block from top to bottom and is threadedly connected to the locking block through the threaded section.

[0010] Preferably, the other end of the transition plunger has a limit plate that abuts against the side of the locking block.

[0011] Preferably, the rear end of the locking shaft has a mounting section, and the locking shaft rotation shaft passes through the mounting section and is rotationally connected to the locking shaft mounting seat.

[0012] By means of the above solution, the utility model has at least the following advantages:

[0013] 1. The locking knob of the technical solution of the present application is arranged on the movable connecting rod seat, which is close to the doctor's hand operation space. The doctor can adjust the knob easily and conveniently, thereby improving the operation efficiency.

[0014] 2. The technical solution of the present application can achieve the purpose of locking and positioning the small cross arm through the locking shaft of the locking component, while at the same time requiring lower movement accuracy of the locking shaft, thereby reducing the processing accuracy of parts of the overall locking structure, thereby reducing costs and improving economy.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the utility model 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 creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a cross arm locking mechanism for a surgical microscope frame of the present application;

[0018] Figure 2 It is a schematic diagram of the structural relationship between the connecting rod member and the locking member of the present application;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the locking member of the present application;

[0020] Figure 4 It is a schematic diagram of the structural relationship between the locking block and the locking knob of the present application;

[0021] Figure 5 It is a schematic diagram of the structural relationship between the locking shaft and the transition plunger of the present application.

[0022] In the figure: 1 movable connecting rod seat, 2 fixed connecting rod seat, 3 connecting rod member, 4 upper connecting rod, 5 lower connecting rod, 6 pin shaft, 7 locking member, 8 locking shaft mounting seat, 9 locking shaft, 10 transition plunger, 11 locking block, 12 folded edge, 13 connecting lining plate, 14 locking shaft rotating shaft, 15 locking shaft sliding hole, 16 locking knob, 17 transition plunger rotating hole, 18 deformation groove, 19 limit plate, 20 wearing section. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] See also Figure 1 to Figure 5A cross arm locking mechanism for a surgical microscope frame described in a preferred embodiment of the utility model comprises a movable connecting rod seat 1 and a fixed connecting rod seat 2, a connecting rod member 3 is provided between the movable connecting rod seat 1 and the fixed connecting rod seat 2, the connecting rod member 3 comprises an upper connecting rod 4 and a lower connecting rod 5, and the two ends of the upper connecting rod 4 and the lower connecting rod 5 are rotatably connected to the movable connecting rod seat 1 and the fixed connecting rod seat 2 respectively through a pin shaft 6, the upper connecting rod 4 and the lower connecting rod 5 are buckled together up and down, a locking member 7 is installed between the connecting rod member 3 and the movable connecting rod seat 1, the locking member 7 comprises a locking shaft mounting seat 8, a locking shaft 9, a transition plunger 10 and a locking block 11, the locking shaft mounting seat 8 is fixedly mounted on the connecting rod member 3, the locking block 11 is fixedly mounted on the movable connecting rod seat 1, and the locking shaft mounting seat 8 and the locking block 11 are locked by the locking shaft 9 and the transition plunger 10.

[0025] Preferably, the cross-sections of the upper connecting rod 4 and the lower connecting rod 5 are both U-shaped, that is, both sides of the upper connecting rod 4 and the lower connecting rod 5 have a folded edge 12, and the upper and lower connecting rods 4 and 5 are buckled together by the folded edge 12. The movable connecting rod seat 1 and the fixed connecting rod seat 2 are fixedly provided with a connecting lining 13 on one side facing the connecting rod member 3, and the pin shaft 6 can pass through the connecting lining 13 and the folded edge 12 respectively.

[0026] Preferably, the upper end of the locking shaft mounting seat 8 is fixedly mounted on the upper end of the inner cavity of the upper connecting rod 4 and is located between the folded edges 12 on both sides; the upper end of the locking block 11 is fixedly mounted on the upper end of the inner cavity of the movable connecting rod seat 1 and is located at the locking shaft mounting seat 8; the rear end of the locking shaft 9 is rotatably connected to the locking shaft mounting seat 8 through the locking shaft rotating shaft 14; the transition plunger 10 is rotatably set on the locking block 11; a locking shaft sliding hole 15 is opened at one end of the transition plunger 10; the front end of the locking shaft 9 can pass through the locking shaft sliding hole 15 and be exposed; the locking member 7 also includes a locking knob 16; the locking knob 16 passes through the movable connecting rod seat 1 and is threadedly connected to the locking block 11; the locking block 11 realizes limited clamping of the transition plunger 10 through the locking knob 16.

[0027] Preferably, the body of the locking block 11 is provided with a transition plunger rotation hole 17 for the transition plunger 10 to pass through, and the locking block 11 is also provided with a deformation groove 18 connected to the transition plunger rotation hole 17, and a threaded section is provided at the lower end of the locking block 11 at the deformation groove 18, and the locking knob 16 passes through the deformation groove 18 of the locking block 11 from top to bottom and is threadedly connected to the locking block 11 through the threaded section.

[0028] Preferably, the other end of the transition plunger 10 has a limiting plate 19 that abuts against the side of the locking block 11 .

[0029] Preferably, the rear end of the locking shaft 9 has a penetration section 20 , and the locking shaft rotating shaft 14 passes through the penetration section 20 and is rotationally connected to the locking shaft mounting seat 8 .

[0030] The working principle of the utility model is as follows:

[0031] In the surgical microscope, one end of the large cross arm is rotatably mounted on the holding component in the horizontal direction, and the small cross arm connected thereto is designed with a parallel four-bar linkage mechanism, that is, the small cross arm of the technical solution of the present application is respectively provided with a movable link seat 1 and a fixed link seat 2, as well as an upper link 4 and a lower link 5. The fixed link seat 2 and the movable link seat 1 are connected by upper and lower links, and the two ends of each link and the fixed and movable link seats are connected by a pin 6. The upper and lower links can rotate around the corresponding pin 6 in parallel. In this process, the fixed and movable link seats remain parallel, thus forming a parallel four-bar linkage mechanism. The fixed link seat 2 of the small cross arm is rotatably connected to the other end of the large cross arm of the surgical microscope in the horizontal direction, and the movable link seat is rotatably connected to the balance arm of the surgical microscope in the horizontal direction 1.

[0032] In actual use, when the movable connecting rod seat 1 moves up and down, it will drive the upper connecting rod 4 and the lower connecting rod 5 to rotate around the pin shaft 6 in parallel. At the same time, the gap between the upper connecting rod 4 and the lower connecting rod 5 changes with the rotation, which can indirectly drive the locking member 7 to move, that is, the rear end of the locking shaft 9 can rotate around the axis of the locking shaft rotating shaft 14, and the front end of the locking shaft 9 can move forward and backward in the locking shaft sliding hole 15 along its own axis direction. In the process of moving forward and backward, the locking shaft 9 can indirectly drive the transition plunger 10 to rotate around its own axis in the transition plunger rotating hole 17. When it is necessary to lock the fixed When the locking knob 16 is in the position, the locking knob 16 can be rotated, and the locking knob 16 and the locking block 11 can be connected and tightened by threads. As the screwing length increases, the notch of the deformation groove 18 tightens and becomes smaller, thereby locking the transition plunger 10 and preventing it from rotating. After the transition plunger 10 limits itself, the front end of the locking shaft 9 cannot move forward and backward along its own axial direction in the locking shaft sliding hole 15, and its rear end cannot rotate around the axis of the locking shaft rotating shaft 14. At this point, the relative position between the locking shaft mounting seat 8 and the locking block 11 is fixed, thereby ultimately limiting the movement of the movable connecting rod seat 1.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A cross arm locking mechanism for a surgical microscope frame, comprising a movable connecting rod seat (1) and a fixed connecting rod seat (2), wherein a connecting rod member (3) is provided between the movable connecting rod seat (1) and the fixed connecting rod seat (2), and characterized in that: The connecting rod component (3) comprises an upper connecting rod (4) and a lower connecting rod (5), and the two ends of the upper connecting rod (4) and the lower connecting rod (5) are rotatably connected to a movable connecting rod seat (1) and a fixed connecting rod seat (2) respectively through a pin shaft (6). The upper connecting rod (4) and the lower connecting rod (5) are buckled together in an upper and lower manner. A locking component (7) is arranged between the connecting rod component (3) and the movable connecting rod seat (1). The locking component (7) comprises a locking shaft mounting seat (8), a locking shaft (9), a transition plunger (10) and a locking block (11). The locking shaft mounting seat (8) is fixedly mounted on the connecting rod component (3), and the locking block (11) is fixedly mounted on the movable connecting rod seat (1). The locking shaft (9) and the transition plunger (10) are used to realize locking cooperation between the locking shaft mounting seat (8) and the locking block (11).

2. The cross arm locking mechanism for a surgical microscope frame according to claim 1, characterized in that: The cross-sections of the upper connecting rod (4) and the lower connecting rod (5) are both U-shaped, that is, both sides of the upper connecting rod (4) and the lower connecting rod (5) are provided with folded edges (12), and the upper and lower connecting rods (4) and the lower connecting rods (5) are arranged to be buckled up and down by means of the folded edges (12). The movable connecting rod seat (1) and the fixed connecting rod seat (2) are both fixedly provided with a connecting lining plate (13) on one side facing the connecting rod member (3), and the pin shaft (6) can pass through the connecting lining plate (13) and the folded edges (12) respectively.

3. The cross arm locking mechanism for a surgical microscope frame according to claim 1, characterized in that: The upper end of the locking shaft mounting seat (8) is fixedly mounted on the upper end of the inner cavity of the upper connecting rod (4) and is located between the folded edges (12) on both sides; the upper end of the locking block (11) is fixedly mounted on the upper end of the inner cavity of the movable connecting rod seat (1) and is located at the locking shaft mounting seat (8); the rear end of the locking shaft (9) is rotatably connected to the locking shaft mounting seat (8) through the locking shaft rotating shaft (14); the transition plunger (10) is rotatably arranged on the locking block (11); a locking shaft sliding hole (15) is formed at one end of the transition plunger (10); the front end of the locking shaft (9) can pass through the locking shaft sliding hole (15) and be exposed; the locking member (7) further comprises a locking knob (16); the locking knob (16) passes through the movable connecting rod seat (1) and is threadedly connected to the locking block (11); the locking block (11) realizes limited clamping of the transition plunger (10) through the locking knob (16).

4. The cross arm locking mechanism for a surgical microscope frame according to claim 3, characterized in that: The locking block (11) has a transition plunger rotation hole (17) for the transition plunger (10) to pass through on its body, and the locking block (11) also has a deformation groove (18) communicating with the transition plunger rotation hole (17). The lower end of the locking block (11) is provided with a threaded section at the deformation groove (18), and the locking knob (16) passes through the deformation groove (18) of the locking block (11) from top to bottom and is threadedly connected to the locking block (11) via the threaded section.

5. The cross arm locking mechanism for a surgical microscope frame according to claim 3, characterized in that: The other end of the transition plunger (10) is provided with a limiting plate (19) which abuts against the side edge of the locking block (11).

6. The cross arm locking mechanism for a surgical microscope frame according to claim 3, characterized in that: The rear end of the locking shaft (9) has a mounting section (20), and the locking shaft rotating shaft (14) passes through the mounting section (20) and is rotationally connected to the locking shaft mounting seat (8).

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