阅读说明：本技术 一种用于手术显微镜的滤片切换机构及用于手术的显微镜 (Filter disc switching mechanism for operation microscope and microscope for operation ) 是由 不公告发明人 于 2021-09-27 设计创作，主要内容包括：本发明提供了一种用于手术显微镜的滤片切换机构,包括与光路同轴设置的可调光阑,和能够改变位置的滤光板,所述滤光板上至少设置有橙色滤片和绿色滤片；所述滤光板能够沿直线运动遮住光路,所述橙色滤片和绿色滤片能够分别运动至与光路同轴的位置。本发明还提供了使用该滤片切换机构的手术用显微镜。本发明的优点在于：通过使用可调光阑实现光路中光斑大小的调整,可满足不同情况的使用需求,通过滤光板的直线运动切换不同的滤片,并且可以在不需要滤片使移除滤光板,使用方便。(The invention provides a filter switching mechanism for an operating microscope, which comprises an adjustable diaphragm and a filter plate, wherein the adjustable diaphragm is coaxially arranged with a light path, the filter plate can change the position, and at least an orange filter and a green filter are arranged on the filter plate; the light filter plate can cover the light path along linear motion, and the orange filter piece and the green filter piece can move to the positions coaxial with the light path respectively. The invention also provides a microscope for operation using the filter switching mechanism. The invention has the advantages that: the adjustable diaphragm is used for adjusting the size of the light spot in the light path, the use requirements of different conditions can be met, different filter pieces are switched through linear motion of the filter plate, the filter plate can be removed without the need of the filter pieces, and the use is convenient.)

1. A filter switching mechanism for a surgical microscope, comprising: the device comprises an adjustable diaphragm and a light filter plate, wherein the adjustable diaphragm is coaxially arranged with a light path, the position of the light filter plate can be changed, and the light filter plate is at least provided with an orange filter disc and a green filter disc; the light filter plate can cover the light path along linear motion, and the orange filter piece and the green filter piece can move to the positions coaxial with the light path respectively.

2. The filter switching mechanism for a surgical microscope of claim 1, wherein: the light filter plate is made of transparent materials.

3. The filter switching mechanism for a surgical microscope of claim 1, wherein: the adjustable diaphragm and the filter plate are located in the shell, a control knob is further arranged on the outer side of the shell, one end of the filter plate in the length direction is matched with the control knob, the filter pieces on the filter plate are arranged in the length direction, and the control knob can control the filter plate to change the position in the length direction.

4. A filter switching mechanism for a surgical microscope as claimed in claim 3, wherein: one end of the filter plate, which is far away from the adjustable diaphragm along the length direction, is connected with a driving rod, and the driving rod is in transmission fit with the control knob.

5. The filter switching mechanism for a surgical microscope of claim 4, wherein: the control knob is in threaded fit with the driving rod, the driving rod is in fixed fit with the shell along the circumferential direction, and the control knob is in fixed fit with the shell along the axial direction through a bearing.

6. The filter switching mechanism for a surgical microscope of claim 5, wherein: still be equipped with the stop collar on the actuating lever, actuating lever and stop collar along axial sliding fit, actuating lever and stop collar pass through keyway structure and lock along circumference, the inboard fixed connection of stop collar and casing.

7. A filter switching mechanism for a surgical microscope as claimed in claim 3, wherein: along the light path direction, adjustable diaphragm is in filter plate the place ahead, the one end that the filter plate is close to adjustable diaphragm is fixed with a push rod, the push rod sets up towards the light path direction, the handle and the push rod butt of adjustable diaphragm, when the filter plate moves towards adjustable diaphragm direction, the light passing hole grow of adjustable optical cable.

8. The filter switching mechanism for a surgical microscope of claim 7, wherein: the handle is further fixed with a spring, the other end of the spring is fixed on the side face of the shell far away from the filter plate, and the spring is in a compressed state before the filter plate covers the light path.

9. A microscope for surgery, characterized by: comprising a filter switching mechanism according to any one of claims 1 to 8.

10. A microscope for surgery as claimed in claim 9, wherein: the device comprises a light source, a first lens, a filter switching mechanism, a second lens, a reflector and a third lens which are sequentially arranged along a light path; the incident light and the emergent light of the reflector are basically vertical, the light incident surface of the first lens is a plane, the light emergent surface of the first lens is a convex surface, the second lens is a biconvex lens, the light incident surface of the third lens is a plane, and the light emergent surface of the third lens is a concave surface.

Technical Field

The invention relates to the technical field of microscopes for operation, in particular to a filter switching mechanism for an operation microscope and a microscope for operation.

Background

The oral operation microscope is a special microscope designed for stomatology, and with the continuous development of microscopic technology, the oral operation microscope is widely applied to diagnosis and treatment of dental pulp diseases. Which provides magnification and illumination to the surgical operating field, thereby providing the surgeon with a clear, magnified surgical field of view. So that the doctor can operate more accurately and meticulously. Meanwhile, the operation can be more accurate, the wound is smaller, the soft tissue injury is smaller, the suture is better, the healing period is shortened, and the postoperative pain of a patient caused by oral treatment is relieved.

The lighting system is an important component of the surgical microscope, and the basic performance requirements are as follows:

(1) providing satisfactory illumination of the surgical field;

(2) the illumination brightness, the irradiation area and the irradiation time of the operation area can be adjusted to avoid burning the patient and reduce the irradiation to the oral cavity of the patient as much as possible;

(3) a filter switching device, generally comprising: orange filter disc: can prevent the resin material from being cured too fast, and the green filter disc can clearly see the tiny nerve vessels in the blood environment of the operation.

The utility model discloses a utility model patent that publication number is CN206557465U discloses a filter switching mechanism and operation microscope sets up the through-hole on a rotating member, sets up the light filter in the through-hole, utilizes the rotation of rotating member to switch different light filters, realizes the light filtering demand to the difference. But it can't adjust the size of facula, can't satisfy the requirement of different user state, in addition when switching the light filter, the light path can be obstructed when two adjacent through-holes, and the black region that shelters from appears in the visual field, influences observation and operation.

Disclosure of Invention

The invention aims to provide a filter switching mechanism capable of conveniently adjusting the size of a light spot and a microscope for operation.

The invention solves the technical problems through the following technical scheme: a filter switching mechanism for an operating microscope comprises an adjustable diaphragm and a filter plate, wherein the adjustable diaphragm is coaxially arranged with a light path, the filter plate can change the position, and at least an orange filter and a green filter are arranged on the filter plate; the light filter plate can cover the light path along linear motion, and the orange filter piece and the green filter piece can move to the positions coaxial with the light path respectively.

The adjustable diaphragm is used for adjusting the size of the light spot in the light path, the use requirements of different conditions can be met, different filter discs are switched through the linear motion of the filter plate, the filter plate can be removed without the need of the filter discs, and the adjustable diaphragm is convenient to use.

Preferably, the filter plate is made of a transparent material.

Preferably, the adjustable diaphragm and the filter plate are arranged in the shell, a control knob is further arranged on the outer side of the shell, one end of the filter plate in the length direction is matched with the control knob, the filter pieces on the filter plate are arranged in the length direction, and the control knob can control the filter plate to change the position in the length direction.

Preferably, one end of the filter plate, which is far away from the adjustable diaphragm along the length direction, is connected with a driving rod, and the driving rod is in transmission fit with the control knob.

Preferably, the control knob is in threaded connection with the driving rod, the driving rod is in fixed fit with the shell along the circumferential direction, and the control knob is in fixed fit with the shell along the axial direction through a bearing.

Preferably, still the cover is equipped with the stop collar on the actuating lever, actuating lever and stop collar along axial sliding fit, actuating lever and stop collar pass through the keyway structure and lock along circumference, stop collar and the inboard fixed connection of casing.

Preferably, along the light path direction, adjustable diaphragm is in filter plate the place ahead, the one end that the filter plate is close to adjustable diaphragm is fixed with a push rod, the push rod sets up towards the light path direction, the handle and the push rod butt of adjustable diaphragm, when the filter plate moves towards adjustable diaphragm direction, the clear opening grow of adjustable optical cable.

Preferably, a spring is further fixed on the handle, the other end of the spring is fixed on the side face of the shell far away from the filter plate, and the spring is in a compressed state before the filter plate covers the light path.

The invention also provides a microscope for operation, which comprises the filter disc switching mechanism.

Preferably, the device comprises a light source, a first lens, a filter switching mechanism, a second lens, a reflector and a third lens which are arranged along a light path in sequence; the incident light and the emergent light of the reflector are basically vertical, the light incident surface of the first lens is a plane, the light emergent surface of the first lens is a convex surface, the second lens is a biconvex lens, the light incident surface of the third lens is a plane, and the light emergent surface of the third lens is a concave surface.

The filter switching mechanism for the surgical microscope and the surgical microscope provided by the invention have the advantages that: the adjustable diaphragm is used for adjusting the size of the light spot in the light path, the use requirements of different conditions can be met, different filter pieces are switched through linear motion of the filter plate, the filter plate can be removed without the need of the filter pieces, and the use is convenient. The filter plate is made of transparent materials, so that light rays cannot be blocked when the filter disc is switched, and the influence on operators is reduced. The axial motion of actuating lever is realized through the rotation of control knob to make the filter plate stop in the optional position with the help of screw-nut's self-locking function, keep the stability of light, through push rod drive handle, realize the linkage of filter plate and adjustable diaphragm, and make adjustable diaphragm can automatic re-setting, convenient to use through the spring.

Drawings

FIG. 1 is a schematic diagram of a filter switching mechanism for a surgical microscope provided by an embodiment of the present invention;

fig. 2 is a schematic view of a microscope for surgery provided by an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below in detail and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a filter switching mechanism for an operating microscope, including an adjustable diaphragm 1 disposed coaxially with an optical path, and a filter plate 2 capable of changing a position, where at least an orange filter 21 and a green filter 22 are disposed on the filter plate 2, the filter plate 2 is capable of blocking the optical path along a linear motion, and the orange filter 21 and the green filter 22 are capable of moving to positions coaxial with the optical path respectively.

This embodiment realizes the adjustment of light spot size in the light path through using adjustable diaphragm 1, can satisfy the user demand of different situation, switches different filter discs through the linear motion of filter plate 2 to can remove filter plate 2, convenient to use at the filter disc messenger that does not need.

Further, the filter plate 2 can be made of a transparent material, such as glass, transparent plastic, etc., so that when different filter discs are switched, the brightness of the target position can be maintained, and the influence on the operator can be reduced.

The filter switching mechanism further comprises a shell 3, the adjustable diaphragm 1 and the filter plate 2 are both arranged in the shell 3, a control knob 4 is further arranged on the outer side of the shell 3, one end of the filter plate 2 in the length direction is matched with the control knob 4, the filters on the filter plate 2 are arranged in the length direction, and the control knob 4 can control the filter plate 2 to change positions in the length direction.

The axial motion of the filter plate 2 is realized through the rotation of the control knob 4 in this embodiment, and specifically, the filter plate 2 is connected with an actuating lever 24 along the one end that adjustable diaphragm 1 was kept away from to length direction, actuating lever 24 and control knob 4 spiro union cooperation, actuating lever 24 and casing 3 are along circumference fixed coordination to prevent actuating lever 24 from rotating, control knob 4 passes through bearing 41 and casing 3 along the axial fixity cooperation. Therefore, the control knob 4 can rotate freely relative to the housing 3, and the drive rod 24 cannot rotate and can only extend and retract along the axial direction, so that the position of the filter plate 2 can be adjusted. The driving rod 24 is further sleeved with a limiting sleeve 31, the driving rod 24 is in sliding fit with the limiting sleeve 31 along the axial direction, the driving rod 24 and the limiting sleeve 31 are locked along the circumferential direction through a key groove structure, and the limiting sleeve 31 is fixedly connected with the shell 3; the driving rod 24 is prevented from rotating by the stop sleeve 31, so that the driving rod can only extend and retract under the driving of the control knob 4. The driving rod 24 and the control knob 4 form a screw-nut pair driving structure, and the filter plate 2 can be fixed at any position by utilizing a threaded self-locking structure, so that a stable illumination effect is obtained.

Along the light path direction, before adjustable diaphragm 1 was in filter plate 2, filter plate 2 was close to adjustable diaphragm 1's one end and is fixed with a push rod 23, push rod 23 sets up towards the light path direction, adjustable diaphragm 1's handle 11 and push rod 23 butt, when filter plate 2 moved towards adjustable diaphragm 1's direction, push rod 23 promoted handle 11 and rotates, and the clear opening diameter grow.

The handle 11 is further fixed with a spring 5, the other end of the spring 5 is fixed on the side surface of the shell 3 far away from the filter plate 2, and before the filter plate 2 covers the light path, the spring 5 is in a compressed state, so that the handle 11 can be pressed on the push rod 23 by the spring 5 all the time. When the filter plate 2 leaves the light path, the adjustable diaphragm 1 can be automatically driven to shrink the size of the light through hole.

The person skilled in the art can also set the push rod 23 to be rotatable away from the height of the adjustable diaphragm 1 to avoid the handle 11, so that the position of the handle 11 can be independently controlled when the filter plate 2 moves, so as to adjust the size of the light-passing hole.

Referring to fig. 2, the present embodiment further provides a microscope for surgery, including a light source 61, a first lens 62, a filter switching mechanism 63, a second lens 64, a reflector 65, and a third lens 66, which are sequentially disposed along an optical path; the incident light and the emergent light of the reflector 65 are substantially perpendicular, the light incident surface of the first lens 62 is a plane, and the light emergent surface is a convex surface, the second lens 64 is a biconvex lens, and the light incident surface of the third lens 66 is a plane, and the light emergent surface is a concave surface.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.