CN210323557U

CN210323557U - Operation microscope observation head capable of being adjusted in two directions

Info

Publication number: CN210323557U
Application number: CN201921382768.4U
Authority: CN
Inventors: 秦家俊; 罗平; 苏俊安
Original assignee: Guilin Shibaike Photoelectric Technology Co ltd
Current assignee: Guilin Shibaike Photoelectric Technology Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-14
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a two-way adjustable operating microscope observation head, which comprises a connecting seat and hinge lens seats symmetrically arranged at the two sides of the upper end of the connecting seat, wherein a steering lens seat is arranged between the hinge lens seats, the upper end of the steering lens seat is rotationally connected with a rotating seat through a supporting shaft, the rotating seat is provided with two composite prism seats, the lower ends of the two composite prism seats are rotationally arranged on the steering lens seat, and the steering lens seat is also provided with a transmission component for driving the two composite prism seats to rotate. The operation is convenient, the functionality is guaranteed, and the device is suitable for different operation requirements.

Description

Operation microscope observation head capable of being adjusted in two directions

Technical Field

The utility model relates to a medical microscope equipment technical field specifically is a but operation microscope observation head of two-way adjustment.

Background

The medical microscope is widely applied to the fields of ophthalmology, otolaryngology, stomatology, operation, neurosurgery, gynecology and the like. The distance between the ocular lenses needs to be changed to be suitable for different operators due to the difference of the interpupillary distances of each person. The pupil distance change range of people is approximately 48mm-78mm, so the ocular lens must be adjusted steplessly in the range, and the ocular lens is convenient for operators of the pupil distance to use. The operation of the operation microscope is mostly used in the operation of doctors, and the doctors not only have the requirement of sterilizing instruments and equipment, but also have stable and convenient operation. With the development of medical technology, the requirements for the precision, comfort and the like of instruments are also improved.

In the prior art, threaded sleeves with positive and negative threads are fixedly connected to the bottoms of composite prism seats on two sides, an operation cross rod transversely penetrates through the threaded sleeves on the two sides, a left external thread and a right external thread are arranged on the operation cross rod, when an operation knob rotates, the composite prism seats on the two sides are in opening and closing movement in a moving range through threaded matching, and therefore the adjustment of the interpupillary distance is realized, and a silica gel sleeve is sleeved outside the operation knob, so that the removal and the disinfection are convenient; in the existing single-hand wheel pupil distance adjusting mechanism, a fixed rod is respectively arranged on a left composite prism seat and a right composite prism seat, the other end of the fixed rod is arranged on a turbine structure connected with a hand wheel, and the fixed rod is driven to move in a guide rail of the turbine in the rotation process of the hand wheel, so that the aims of moving the left composite prism seat and the right composite prism seat and adjusting the pupil distance are fulfilled; the pupil distance can be controlled only by rotating the knob, and the compound prism seat can not be directly pulled.

For further simple and convenient operation, improve the precision and the comfort level of product, a compact structure's single-hand wheel interpupillary distance adjustment mechanism has been researched and developed, realize using the single-hand wheel to be main also can use the single hand to pull the compound microscope stand on the left side or the right side simultaneously and operate, but the sterile silica gel cover of hand wheel position configuration, the doctor uses in the operation process, and the disinfection can the direct operation on the hand wheel, under the sterile condition, can directly pull compound prism seat and adjust.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but operation microscope viewing head of two-way adjustment to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a two-way adjustable operating microscope observation head comprises a connecting seat and hinge lens seats symmetrically arranged on two sides of the upper end of the connecting seat, wherein a steering lens seat is arranged between the hinge lens seats, fixed shafts at two ends of the steering lens seat are rotationally connected with the hinge lens seats, the steering lens seats can be rotationally connected around the fixed shafts, the upper end of each steering lens seat is rotationally connected with a rotating seat through a supporting shaft, two composite prism seats are arranged on the rotating seats, a lens barrel is arranged at the upper end of each composite prism seat, an eyepiece convenient for workers to observe is arranged at the upper end of each lens barrel, the lower ends of the two composite prism seats are rotationally arranged on the steering lens seats, and a transmission component for driving the two composite prism seats to rotate is further arranged on the steering lens seats;

the transmission assembly comprises a main fixed seat arranged on the rotating seat, a cover plate is detachably arranged at the upper end of the main fixed seat, two sliding grooves which are horizontally staggered are formed in the main fixed seat, a U-groove moving block is matched in each sliding groove in a sliding mode, a U groove corresponding to the complex prism seat is formed in the surface of one side of each U-groove moving block, a rack is connected to the surface of the other side of each U-groove moving block through a buckle assembly, a fixed frame is further erected on the surface of the main fixed seat where the U-groove moving block is located, a gear piece penetrates through an installation hole in the fixed frame, and a gear portion of the gear piece is meshed with the two racks on the U;

and a linkage mechanism is arranged between each U-groove moving block and the corresponding composite prism seat and is used for applying a rotating force to the composite prism seat by matching with the U-groove moving blocks so as to drive the composite prism seat to rotate.

As a further aspect of the present invention: the hand wheel convenient to hold can be dismantled to gear spare tip.

As a further aspect of the present invention: the shaft body part of the gear piece is rotatably connected with the fixed frame through a bearing.

As a further aspect of the present invention: the linkage mechanism comprises a swing shaft with one end fixedly connected with the composite prism seat, the other end of the swing shaft is of a rod-shaped structure, and a U groove convenient for embedding of the rod-shaped structure is formed in the surface of the U groove moving block.

As a further aspect of the present invention: the buckle assembly comprises a cylindrical block arranged on the rack and a cylindrical groove arranged on the U-groove moving block, and the cylindrical groove is matched with the cylindrical block.

As a further aspect of the present invention: the hand wheel is sleeved with a silica gel disinfection sleeve.

As a further aspect of the present invention: the top other end of apron one end with fix with screw about the compound prism seat in the middle of links to each other with main fixing base, and main fixing base bottom and connecting block are with fix with screw, and the connecting block is with fix with screw on rotating the seat.

As a further aspect of the present invention: there is a scale mark in the positive centre of one side that the apron is close to the hand wheel, the hand wheel leans on the apron end to have the round scale ring.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the utility model discloses use single hand wheel control, only need the singlehanded can operate convenient and fast.

2. The utility model discloses used the accurate mutual transmission mode of taking two of little modulus rack and pinion, both can have been in centre one hand wheel adjustment interpupillary distance, driven the rack by the gear, also can pull the left side or the compound prism seat in the right adjusts the interpupillary distance, drives the gear by the rack, and is two-way adjustable, not only convenient operation but also functional guarantee is applicable to different operation demands.

3. The utility model discloses use little modulus rack-and-pinion transmission, through grinding the cooperation for it is light to rotate, and the motion process is comfortable.

4. The utility model discloses compact structure, the one hand wheel is located and controls observation group shared space, and the wholeness is strong, and the appearance is little.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is an exploded schematic view of the transmission component of the present invention.

Fig. 4 is a partial enlarged view of the interpupillary distance variation relationship of the present invention.

Fig. 5 is a schematic structural view of the middle transmission component and the complex prism seat of the present invention.

Wherein: the device comprises a cover plate 1, a main fixed seat 2, a fixed frame 3, a hand wheel 4, a gear piece 5, a rack 6, a U-groove moving block 7, a connecting block 8, a swing shaft 9, a disinfection sleeve 10, an ocular 11, a lens barrel 12, a composite prism seat 13, a rotating seat 14, a steering lens seat 15, a hinge lens seat 16 and a connecting seat 17.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, in an embodiment of the present invention, a two-way adjustable observation head for an operating microscope includes a connecting base 17 and hinge lens bases 16 symmetrically disposed on two sides of the upper end of the connecting base, a steering lens base 15 is disposed between the hinge lens bases 16, fixing shafts disposed on two ends of the steering lens base 15 are rotatably connected to the hinge lens bases 16, the steering lens base 15 is rotatably connected to the fixing shafts, the upper end of the steering lens base 15 is rotatably connected to a rotating base 14 through a supporting shaft, two complex prism bases 13 are disposed on the rotating base 14, a lens barrel 12 is disposed on the upper end of each complex prism base 13, an eyepiece 11 convenient for a worker to observe is disposed on the upper end of the lens barrel 12, the lower ends of the two complex prism bases 13 are rotatably disposed on the steering lens base 15, and a transmission assembly for driving the two complex prism bases 13 to rotate is further disposed on the steering lens base 15;

as shown in fig. 3, the transmission assembly includes a main fixing seat 2 disposed on a rotating seat 14, a cover plate 1 is detachably disposed at the upper end of the main fixing seat 2, two sliding grooves horizontally staggered are disposed on the main fixing seat 2, a U-groove moving block 7 is slidably fitted in each sliding groove, a U-groove corresponding to a complex prism seat 13 is disposed on one side surface of each U-groove moving block 7, a rack 6 is connected to the other side surface of the U-groove moving block through a buckle assembly, a fixing frame 3 is further erected on the surface of the main fixing seat 2 where the U-groove moving block 7 is disposed, a gear piece 5 is inserted in a mounting hole of the fixing frame 3, a shaft body portion of the gear piece 5 is rotatably connected to the fixing frame 3 through a bearing, a gear portion of the gear piece 5 is engaged with the two racks 6 on the U-groove moving block 7, and a hand wheel 4 convenient to, the gear piece 5 is driven to rotate by the hand wheel 4, and the two racks 6 are distributed on the upper side and the lower side of the gear piece 5, so that the two racks 6 can drive the U-groove moving blocks 7 to move relatively or oppositely under the gear transmission in the staggered meshing mode;

and a linkage mechanism is arranged between each U-groove moving block 7 and the corresponding composite prism seat 13 and is used for applying a rotating force to the composite prism seat 13 by matching with the U-groove moving blocks 7 so as to drive the composite prism seat 13 to rotate, so that the adjustment of the distance between the two eyepieces 11 is completed.

The linkage mechanism comprises a swing shaft 9 with one end fixedly connected with the composite prism seat 13, the other end of the swing shaft 9 is of a rod-shaped structure, a U groove convenient for embedding of the rod-shaped structure is formed in the surface of the U groove moving block 7, and when the U groove moving block 7 slides, the U groove can generate an acting force on the rod-shaped structure, so that a driving force is provided for rotation of the composite prism seat 13.

The buckle assembly comprises a cylindrical block arranged on the rack 6 and a cylindrical groove arranged on the U-groove moving block 7, the cylindrical groove and the cylindrical block are matched with each other, and the cylindrical block is inserted into the cylindrical groove during actual installation, so that detachable connection of the rack 6 and the U-groove moving block 7 is completed.

The hand wheel 4 is sleeved with a silica gel disinfection sleeve 10.

One end of the cover plate 1 is fixed above the middle of the left and right composite prism seats 13 by screws, and the other end of the cover plate is connected with the main fixing seat 2, the bottom of the main fixing seat 2 is fixed with the connecting block 8 by screws, and the connecting block 8 is fixed on the rotating seat 14 by screws.

The following is the calculation of the interpupillary distance, as shown in fig. 4.

L is 1/2 of interpupillary distance;

the horizontal distance from the rotation center O of the left prism seat to the hand wheel shaft is D;

the distance from the rotation center O of the left prism seat to the center O1 of the fixed shaft is b;

the distance from the rotation center O of the left prism seat to the center O2 of the eyepiece is a;

the distance from the eyepiece center O2 to the fixed axis O1 is c;

a. b and c are constants, and the included angle between a, b and c is also constant;

b is α with respect to the horizontal handwheel axis, wherein the pupil distance is positive α when the pupil distance is increased and negative α when the pupil distance is decreased.

The radius of the gear base circle is r;

the hand wheel rotates delta theta, the gear rotates delta theta along with the hand wheel, the meshing moving distance of the racks is delta theta r, and the moving distance of the racks, which is equal to the moving distance of the fixed shaft and is vertical to the hand wheel shaft, is also delta theta r;

taking the axis of a horizontal hand wheel as a reference, and setting the rotation angle of the hand wheel to be delta theta;

then the following function is obtained by conversion:

the angle units of L ═ a × sin (pi- β + arcsin (delta theta r/b)) + D are all radians;

the pupil distance is 2L due to bilateral symmetry.

Pupil distance 2L ═ 2(a × sin (pi- β + arcsin (Δ θ × r/b)) + D);

the variation interval of the pupil distance 2L is {48, 78} mm, and N values of the pupil distance 2L and N values of D and delta theta are obtained by equally dividing the sub-interval N. The values are tabulated and plotted on a handwheel to identify the interpupillary distance.

Example 2

There is a scale mark in the positive centre of one side that apron 1 is close to hand wheel 4, hand wheel 4 leans on apron 1 end to have the round scale ring, and when rotating hand wheel 4, the reading is promptly for the interpupillary distance on the corresponding hand wheel 4 scale ring of scale mark on the apron 1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A bidirectional adjustable operating microscope observation head comprises a connecting seat (17) and hinge lens seats (16) symmetrically arranged at two sides of the upper end of the connecting seat, a steering mirror seat (15) is arranged between the hinge mirror seats (16), fixed shafts at two ends of the steering mirror seat (15) are rotationally connected with the hinge mirror seats (16), the steering mirror seat (15) can be rotationally connected around a fixed shaft, the upper end of the steering mirror seat (15) is rotationally connected with a rotating seat (14) through a supporting shaft, two complex prism seats (13) are arranged on the rotating seat (14), a lens cone (12) is arranged at the upper end of each complex prism seat (13), the upper end of the lens cone (12) is provided with an eyepiece (11) which is convenient for a worker to observe, the lower ends of the two composite prism seats (13) are rotatably arranged on a steering lens seat (15), the steering lens seat (15) is also provided with a transmission component for driving the two composite prism seats (13) to rotate;

the device is characterized in that the transmission assembly comprises a main fixed seat (2) arranged on a rotating seat (14), a cover plate (1) is detachably arranged at the upper end of the main fixed seat (2), two sliding grooves which are horizontally staggered are formed in the main fixed seat (2), a U-groove moving block (7) is matched in each sliding groove in a sliding mode, a U groove corresponding to the complex prism seat (13) is formed in the surface of one side of each U-groove moving block (7), a rack (6) is connected to the surface of the other side of each U-groove moving block through a buckle assembly, a fixed frame (3) is further erected on the surface of the main fixed seat (2) where the U-groove moving block (7) is located, a gear piece (5) penetrates through a mounting hole in the fixed frame (3), and a gear portion of the gear piece (5) is meshed with the two racks (6) on the;

and a linkage mechanism is arranged between each U-groove moving block (7) and the corresponding composite prism seat (13), and is used for applying a rotating force to the composite prism seat (13) by matching with the U-groove moving blocks (7) so as to drive the composite prism seat (13) to rotate.

2. The bidirectionally adjustable surgical microscope viewing head according to claim 1, wherein a hand wheel (4) for easy handling is detachably provided at the end of said gear member (5).

3. The bidirectionally adjustable surgical microscope viewing head according to claim 1, wherein the shaft portion of said gear member (5) is rotatably connected to the holder (3) by means of a bearing.

4. The viewing head of a surgical microscope with bidirectional adjustment according to claim 1, wherein the linkage mechanism comprises a swing shaft (9) having one end fixedly connected to the complex prism base (13), the other end of the swing shaft (9) is in a rod-like structure, and a U-shaped groove for facilitating the insertion of the rod-like structure is formed on the surface of the U-shaped groove moving block (7).

5. The bidirectionally adjustable surgical microscope viewing head according to claim 1, wherein said snap assembly comprises a cylindrical block disposed on the rack (6) and a cylindrical slot disposed on the U-slot moving block (7), said cylindrical slot and cylindrical block cooperating.

6. The bidirectionally adjustable surgical microscope viewing head according to claim 2, wherein a silicone disinfection sleeve (10) is fitted over said hand wheel (4).

7. The viewing head of a surgical microscope with bidirectional adjustment according to claim 1, wherein one end of the cover plate (1) is fixed above the middle of the left and right complex prism bases (13) by screws and the other end is connected with the main fixing base (2), the bottom of the main fixing base (2) is fixed with the connecting block (8) by screws, and the connecting block (8) is fixed on the rotating base (14) by screws.

8. The bidirectionally adjustable surgical microscope viewing head according to claim 2, wherein a graduation mark is provided in the center of one side of the cover plate (1) close to the hand wheel (4), and a circle of graduation ring is provided at the end of the hand wheel (4) close to the cover plate (1).