CN220252291U

CN220252291U - Operation magnifying glass

Info

Publication number: CN220252291U
Application number: CN202321804637.7U
Authority: CN
Inventors: 沈顺国; 杨晓光; 王华东; 何进; 周伟忠
Original assignee: Suzhou Sumai Medical Technology Co ltd
Current assignee: Suzhou Sumai Medical Technology Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2023-12-26
Anticipated expiration: 2033-07-11

Abstract

The utility model relates to a surgical magnifier, which comprises a bracket and an amplifying lens barrel, wherein the amplifying lens barrel is connected to the bracket and comprises an objective lens assembly, a prism assembly and an eyepiece assembly, and the objective lens assembly comprises an objective lens shell and an objective lens group arranged in the objective lens shell; the lens assembly comprises a lens shell and a lens group arranged in the lens shell, wherein the lens shell and the lens shell are rotatably connected through damping fit, so that the lens group translates along the axis direction of the lens group to adjust the focal length of the lens group. Compared with a thread adjusting structure, the utility model can quickly realize the focusing function of the lens barrel; the coaxiality of the lens barrel is high; the lens barrel cannot fall down and be damaged due to excessive adjustment of a user in the adjustment process; the damping adjustment is comfortable in hand feeling.

Description

Operation magnifying glass

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a surgical magnifier.

Background

The binocular loupe (binocular loupe) for operation adopts original optical stereo convergence observation technology to make the binocular vision of observer be stereo converged in the narrow cavity so as to produce a bright and amplified three-dimensional visual field, and provide unique stereo deep layer scene for inspection and treatment. The operation magnifier collects general instruments for the five sense organs such as: the reflecting bowl mirror, the head lamp, the binocular magnifier and the like are integrated.

The operation magnifier is in the form of a head-mounted type (magnifier is fixed by a head band), TTL (Through The Lens) is that an eyepiece of the magnifier (a lens close to an eye part) passes through a carrying eyepiece (a common glass lens of glasses), and a Flip-up type (magnifier) is that the magnifier is fixed at the front end of the glasses in a hinge mode and can be flipped up and down, wherein the Flip-up type operation magnifier is most popular. The operation magnifier comprises two types of Galileo type and Kepler type according to the light path principle. At present, the most used operation magnifier is usually worn on a spectacle frame or a head band for use, so that a doctor can conveniently conduct magnifying observation in the operation process.

Currently, most of the off-angle magnifiers on the market adopt screw rotation to realize the focusing function, as shown in fig. 4 and 5. See patent publication number CN114442308A and disclose a surgical magnifier, including backplate, removal subassembly, head-up subassembly and wear adjustment subassembly, backplate one side can be dismantled and be connected with the connecting block, the connecting block surface can be dismantled through the hinge and be connected with the link, the link surface sets up and is connected with the removal subassembly, remove subassembly one end and set up and be connected with the picture frame, picture frame one side sets up and is connected with the head-up subassembly, backplate one end sets up and is connected with wear adjustment subassembly. The patent provides good head-up function, and the objective lens seat and the prism seat adopt structures which are also in threaded connection, so that the adjustment speed is low, even the condition that the objective lens seat falls off can occur, and the adjustment hand feeling is poor.

Disclosure of Invention

The utility model aims to provide a spiral focusing operation magnifier, which can be applied to the fields of stomatology, surgery and the like.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the operation magnifier comprises a bracket and an amplifying lens barrel, wherein the amplifying lens barrel is connected to the bracket and comprises an objective lens assembly, a prism assembly and an eyepiece assembly, and the objective lens assembly comprises an objective lens shell and an objective lens group arranged in the objective lens shell; the lens assembly comprises a lens shell and a lens group arranged in the lens shell, wherein the lens shell and the lens shell are rotatably connected through damping fit, so that the lens group translates along the axis direction of the lens group to adjust the focal length of the lens group.

The above technical scheme preferably further comprises a guiding and limiting structure, wherein the guiding and limiting structure is used for guiding and limiting the rotation track of the objective lens housing.

Further preferably, the guiding and limiting structure comprises a guiding groove and a pin, the guiding groove is formed in one of the objective lens shell and the prism shell, the pin is connected to the other one of the objective lens shell and the prism shell, and the pin is slidably arranged in the guiding groove.

Still more preferably, the objective housing includes an objective cover and an objective seat, the objective cover is sleeved outside the objective seat, the objective group is disposed in the objective seat, the objective seat is in damping fit with the prism housing, and the pin is connected to the objective seat.

Still further preferably, the objective lens holder and the prism housing are moved back and forth along the axial direction thereof while being rotated relative to each other.

Still further preferably, the prism housing includes a connecting cylinder and a prism seat, one end of the connecting cylinder is connected with the prism seat, the prism group is disposed in the prism seat, the other end of the connecting cylinder is in damping fit with the objective housing, and the guide slot is formed in the connecting cylinder.

Still further preferably, the guide groove extends obliquely or spirally along the axial direction of the connecting cylinder, so that the pin can displace in the front-rear direction of the connecting cylinder, thereby driving the objective lens group to move and focus.

According to the technical scheme, preferably, an included angle of more than 90 degrees and less than 180 degrees is formed between the axis of the inlet of the prism shell and the axis of the outlet of the prism shell, so that when in observation, the observation angle is not required to be adjusted by a low head as long as the eyepiece is seen in a head-up mode.

Preferably, the surgical magnifier further comprises an adjusting mechanism, the adjusting mechanism is connected to the bracket, a pair of magnifying lens barrels are connected to the adjusting mechanism, the pair of magnifying lens barrels translate and rotate through the adjusting mechanism, the pupil distance between the pair of magnifying lens barrels can be adjusted through translation, and the magnifying lens barrels can be moved away from eyes through rotation.

According to the technical scheme, preferably, the bracket is a frame or a head band, so that the user can wear the bracket conveniently.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

compared with a thread adjusting structure, the utility model can quickly realize the focusing function of the lens barrel; the coaxiality of the lens barrel is high; the lens barrel cannot fall down and be damaged due to excessive adjustment of a user in the adjustment process; the damping adjustment is comfortable in hand feeling.

Drawings

FIG. 1 is a schematic view of the structure of the operation magnifier according to the present embodiment;

fig. 2 is a split schematic diagram of an amplifying lens barrel according to the present embodiment;

fig. 3 is a schematic enlarged sectional view of an enlargement barrel of the present embodiment;

fig. 4 is a schematic structural view of an amplifying lens barrel in the prior art;

fig. 5 is a split schematic diagram of an amplifying lens barrel in the prior art.

In the above figures:

1. a bracket;

2. an amplifying lens barrel; 200. an objective lens group; 201. an objective lens cover; 202. an objective lens holder; 210. a prism group; 211. a connecting cylinder; 2110. a guide groove; 212. a prism seat; 220. an eyepiece mount; 221. an eyepiece group; 23. a pin;

3. an adjusting mechanism.

40. An objective lens assembly; 400. a thread; 41. a prism assembly; 42. an eyepiece assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

A magnifier for operation shown in fig. 1 comprises a bracket 1 and a magnifier tube 2, wherein the magnifier tube 2 adopts a pair of binocular tubes.

The stand 1 may be, for example, a frame, and the user may wear it in the form of spectacles, as shown. The support 1 can also adopt a head hoop, such as a medical head hoop, which is worn on the head, is quite stable, and the amplifying lens barrel 2 is connected to the support 1.

In a preferred mode of this embodiment: the operation magnifier also comprises an adjusting mechanism 3, the adjusting mechanism 3 is connected to the bracket 1, the magnifier tube 2 is connected to the adjusting mechanism 3, the pupil distance of the pair of magnifier tubes 2 can be adjusted by the translation of the adjusting mechanism 3, and the magnifier tube 2 can be moved away from the eyes by the rotation of the adjusting mechanism. The structure of the adjusting mechanism 3 is not an utility model point of the present application, and will not be described herein in detail, and reference may be made to a patent surgical magnifier with publication number CN218471050U for specific structure.

The magnifying lens barrel includes an objective lens assembly, a prism assembly, and an eyepiece assembly. Wherein:

the objective lens assembly includes an objective lens housing, an objective lens assembly 200 disposed within the objective lens housing. In this embodiment: the objective housing comprises an objective cover 201 and an objective seat 202, the objective cover 201 is fixedly sleeved outside the objective seat 202, for example, the objective cover 201 and the objective seat 202 are screwed by threads to be relatively fixed, and the objective set 200 is fixedly arranged in the objective seat 202.

The prism assembly includes a prism housing, a prism set 210 disposed within the prism housing. In this embodiment: the prism housing includes a connection cylinder 211 and a prism seat 212, wherein one end of the connection cylinder 211 is connected with the prism seat 212, and the prism group 210 is fixedly arranged in the prism seat 212.

In a preferred mode of this embodiment: the prism assembly is a steering prism assembly, specifically: an included angle of more than 90 degrees and less than 180 degrees is formed between the axis of the inlet of the connecting cylinder 211 in the prism housing and the axis of the outlet of the prism seat 212 in the prism housing. The light incident from the entrance of the connection tube 211 is turned by the prism group 210 and then exits from the exit of the prism seat 212, and this also makes it unnecessary to adjust the viewing angle by looking down the eyepiece when viewing.

The eyepiece assembly includes an eyepiece mount 220, an eyepiece set 221 disposed within the eyepiece mount 220.

In this embodiment: the connection modes of the objective lens component, the prism component and the eyepiece component are as follows: the objective lens shell and the prism shell are rotatably connected through damping fit, so that the objective lens 202 translates along the axial direction of the objective lens to adjust the focal length of the objective lens; the prism housing is fixedly connected with the eyepiece mount 220.

Specifically: the other end of the connecting tube 211 is inserted into the objective lens holder 202, and the two are rotatably connected through damping fit, that is, when the objective lens holder 202 is rotated with enough force, the friction force between the objective lens holder 202 and the connecting tube 211 is overcome, so that the objective lens holder 202 and the connecting tube 211 can relatively rotate; when no force is applied to the objective lens holder 202, the objective lens holder 202 and the connecting cylinder 211 remain relatively stationary. When the objective lens holder 202 and the connecting cylinder 211 are rotated relatively, the objective lens holder 202 also moves in the axial direction, so that the objective lens group 202 inside the lens holder moves, the adjustment of the focal length is completed, and the pair of magnifier barrels 2 can respectively adjust the focal lengths of the left and right eyes.

The rotation and movement of the objective lens holder 202 can be achieved by a guiding and limiting structure.

In this embodiment, a specific implementation manner of a guiding and limiting structure is provided: the guiding and limiting structure comprises a guiding groove 2110 and a pin 23, and the guiding groove 2110 and the pin 23 are respectively arranged on the objective lens shell and the prism shell. As shown in fig. 2 and 3: in this embodiment: the guide groove 2110 is provided on the connection cylinder 211, and the guide groove 2110 extends obliquely, i.e., spirally, in the axial direction of the connection cylinder 221; the pin 23 is coupled to the objective lens holder 202, and the pin 23 is slidably disposed in the guide groove 2110. Thus, when the objective lens holder 202 is rotated, the pin 23 is driven to slide in the guide groove 2110, and the extension direction of the guide groove 2110 enables the objective lens holder 202 to translate, and the two ends of the guide groove 2110 can limit the continued movement of the pin 23, so as to prevent the objective lens holder 202 from falling off due to excessive rotation. In the illustration, the guide limit structure is provided with a pair of, and both symmetry sets up. In addition, the objective lens cover 201 may shield the pin 23 on the objective lens holder 202.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. The operation magnifier comprises a bracket and an amplifying lens barrel, wherein the amplifying lens barrel is connected to the bracket and comprises an objective lens assembly, a prism assembly and an eyepiece assembly, and the objective lens assembly comprises an objective lens shell and an objective lens group arranged in the objective lens shell; the prism subassembly include the prism casing, set up the prism group in the prism casing, its characterized in that: the objective lens shell and the prism shell are rotatably connected through damping fit, so that the objective lens group translates along the axis direction of the objective lens group to adjust the focal length of the objective lens group.

2. The surgical loupe of claim 1, wherein: the magnifying lens barrel also comprises a guiding and limiting structure, wherein the guiding and limiting structure is used for guiding and limiting the rotating track of the objective lens shell.

3. A surgical magnifier according to claim 2, wherein: the guide limit structure comprises a guide groove and a pin, wherein the guide groove is formed in one of the objective lens shell and the prism shell, the pin is connected to the other one of the objective lens shell and the prism shell, and the pin is slidably arranged in the guide groove.

4. A surgical magnifier according to claim 3, wherein: the objective shell comprises an objective cover and an objective seat, the objective cover is sleeved outside the objective seat, the objective group is arranged in the objective seat, the objective seat is matched with the prism shell through damping, and the pin is connected to the objective seat.

5. The surgical loupe of claim 4, wherein: the objective lens seat and the prism shell rotate relatively and move back and forth along the axial direction of the objective lens seat.

6. A surgical magnifier according to claim 3, wherein: the prism shell comprises a connecting cylinder and a prism seat, one end of the connecting cylinder is connected with the prism seat, the prism group is arranged in the prism seat, the other end of the connecting cylinder is matched with the objective lens shell through damping, and the guide groove is formed in the connecting cylinder.

7. The surgical loupe of claim 6, wherein: the guide groove extends obliquely along the axial direction of the connecting cylinder.

8. The surgical loupe of claim 1, wherein: the included angle between the axis of the inlet of the prism shell and the axis of the outlet of the prism shell is more than 90 degrees and less than 180 degrees.

9. The surgical loupe of claim 1, wherein: the surgical magnifier also comprises an adjusting mechanism, the adjusting mechanism is connected to the bracket, a pair of magnifying lens barrels are connected to the adjusting mechanism, and the pair of magnifying lens barrels translate and rotate through the adjusting mechanism.

10. The surgical loupe of claim 1, wherein: the bracket is a frame or a head band.