阅读说明：本技术 头戴式眼科octa设备 (Head-mounted ophthalmic OCTA device ) 是由 岳星宇 赵一天 杨建龙 顾愿愿 陈浜 谢林春 刘江 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种头戴式眼科OCTA设备。所述头戴式眼科OCTA设备包括：头戴式外壳、光路系统以及调节机构,所述调节机构与光路系统传动配合,并至少用于将所述光路系统移动至指定位置处；其中,所述光路系统包括成像光路和辅助对正光路,所述成像光路至少用于采集被检测眼球的图像信息,所述辅助对正光路至少用于引导被检测眼球的注视点位置,以使被检测眼球在瞳距方向上对正。本发明提供的头戴式眼科OCT设备(探头)采用的显示屏可以显示不同静态或者动态画面,图像灵活多变,可以满足不同类型的被检测对象的要求,且可使被测对象的两眼同时注视显示屏,引导被测对象的眼球的注视点对正,从而缓解采用单眼注视时的疲劳感。(The invention discloses a head-wearing ophthalmic OCTA device. The head-mounted ophthalmic OCTA device includes: the adjusting mechanism is in transmission fit with the optical path system and at least used for moving the optical path system to a specified position; the optical path system comprises an imaging optical path and an auxiliary alignment optical path, wherein the imaging optical path is at least used for collecting image information of the detected eyeball, and the auxiliary alignment optical path is at least used for guiding the fixation point position of the detected eyeball so as to align the detected eyeball in the interpupillary distance direction. The display screen adopted by the head-wearing type ophthalmic OCT equipment (probe) provided by the invention can display different static or dynamic pictures, the images are flexible and changeable, the requirements of different types of detected objects can be met, two eyes of the detected objects can watch the display screen simultaneously, the gaze points of eyeballs of the detected objects are guided to be aligned, and therefore, the fatigue feeling when monocular gaze is adopted is relieved.)

1. A head-mounted ophthalmic OCTA apparatus, comprising: the adjusting mechanism is in transmission fit with the optical path system and at least used for moving the optical path system to a specified position;

the optical path system comprises an imaging optical path and an auxiliary alignment optical path, wherein the imaging optical path is at least used for collecting image information of the detected eyeball, and the auxiliary alignment optical path is at least used for guiding the fixation point position of the detected eyeball so as to align the detected eyeball in the interpupillary distance direction.

2. The head-mounted ophthalmic OCTA device of claim 1, wherein: the imaging light path comprises a laser collimator (401), a focusing lens (402), a two-dimensional scanning vibration mirror (403), a first lens (404), a first dichroic mirror (405), a reflecting mirror (406) and an eye-catching lens (407), light beams from a light source sequentially pass through the laser collimator (401), the focusing lens (402) and are incident to the two-dimensional scanning vibration mirror (403), the light beams pass through the first lens (404) and are incident to the first dichroic mirror (405) after being reflected by the two-dimensional scanning vibration mirror (403), sequentially pass through the first dichroic mirror (405) and the reflecting mirror (406), are incident to the eye-catching lens (407) after being reflected by the first dichroic mirror (405) and the reflecting mirror (406), and enter detected eyeballs of a detected object after being amplified by the eye-catching lens (407).

3. The head-mounted ophthalmic OCTA device of claim 1, wherein: the auxiliary alignment light path comprises a display screen (408), a second dichroic mirror (409), a second lens (410), a first dichroic mirror (405), a reflecting mirror (406) and an eye-catching lens (407), partial image light beams from the display screen (408) are reflected by the second dichroic mirror (409), penetrate through the first dichroic mirror (405), are incident to the reflecting mirror (406), are reflected by the reflecting mirror (406), are incident to the eye-catching lens (407), and enter detected eyeballs of a detected object after being amplified by the eye-catching lens (407);

meanwhile, another partial image beam from the display screen (408) passes through the second dichroic mirror (409), the second lens (410) and enters another undetected eyeball to be detected in sequence.

4. The head-mounted ophthalmic OCTA device of claim 3, wherein: the adjusting mechanism comprises a first adjusting mechanism and a second adjusting mechanism, and the first adjusting mechanism is at least used for driving the optical path system to move along a first direction so as to adjust at least the focal length between the ocular lens (407) and the detected eyeball; the second adjusting mechanism is at least used for driving the optical path system to move along a second direction so as to align the optical path system with the detected eyeball in the interpupillary distance direction.

5. The head-mounted ophthalmic OCTA device of claim 4, wherein: first adjustment mechanism includes along the first regulation slip table and first slider, the first actuating mechanism that first direction set up, first slider activity sets up on first regulation slip table and can first actuating mechanism orders about down to remove along first regulation slip table, wherein, optical path system with first slider fixed fit and can with first slider synchronous motion together.

6. The head-mounted ophthalmic OCTA device of claim 5, wherein: the second adjustment mechanism comprises a second adjustment sliding table, a second sliding block and a second driving mechanism, the second adjustment sliding table is arranged along the second direction, the second sliding block is movably arranged on the second adjustment sliding table and can be driven by the second driving mechanism to move along the second adjustment sliding table, and the optical path system is fixedly matched with the second sliding block and can move synchronously with the second sliding block.

7. The head-mounted ophthalmic OCTA device of claim 6, wherein: the second adjusting sliding table is fixedly arranged on the first sliding block, and the light path system is fixedly arranged on the second sliding block;

and/or the first adjusting sliding table and the second adjusting sliding table are vertically and crossly arranged;

and/or, the optical path system further comprises an imaging shell, the imaging optical path and the auxiliary alignment optical path are encapsulated in the imaging shell, and the imaging shell is in transmission fit with the adjusting mechanism.

8. The head-mounted ophthalmic OCTA device of claim 1, wherein: the head-mounted shell comprises a shell body and a fixing band, wherein the fixing band is used for fixing the shell body on the head of a human body, the light path system and the adjusting mechanism are packaged inside the shell body, and the adjusting mechanism is fixedly matched with the shell body.

9. The head-mounted ophthalmic OCTA device of claim 8, wherein: the outer shell is provided with an arc-shaped contour surface matched with the eyes of a human body, and the arc-shaped contour surface is also provided with an avoidance groove matched with the bridge of the nose of the human body;

and/or two avoidance grooves matched with the bridge of the nose of the human body are arranged on the arc-shaped contour surface, and the two avoidance grooves are symmetrically distributed in a mirror manner.

10. The head-mounted ophthalmic OCTA device of claim 8, wherein: the shell body is further provided with an adjusting button connected with the adjusting mechanism, and the adjusting button is connected with the adjusting mechanism.

Technical Field

The invention particularly relates to head-mounted ophthalmic OCTA equipment, and belongs to the technical field of scanning imaging.

Background

Optical Coherence Tomography (OCTA) is a novel noninvasive fundus image examination technology, can identify retinal choroidal blood flow movement information with high resolution, and has unique advantages in retinal choroidal vascular changes, disease management follow-up and treatment effect detection. In recent years, the method has been widely applied to diagnosis and treatment of ophthalmic diseases, such as retinal vascular diseases, glaucoma, diabetic retinopathy and the like.

Currently, the existing commercial ophthalmic OCTA devices are bulky, need to work under special diagnostic conditions, and are not easily portable. In the data acquisition process, an acquired person sits in front of the equipment, the chin is fixed on a forehead bracket, for example, a probe on the equipment is adjusted, so that the probe is accurately aligned with the eyeball of the acquired person, and the acquired person can finish data acquisition only by keeping a static state for several minutes. The data acquisition of patients of special groups such as infants, children, serious patients in bed, anesthesia patients and patients who can not keep the required posture and fixation is particularly limited.

Currently, in response to this deficiency, various handheld OCT probes are also developed in the market for clinical applications (for example, a handheld OCT probe and an OCT measurement system disclosed in CN 202699100U), however, during the operation of such handheld OCT probes, a doctor needs to hold a device for focusing, but on one hand, during the holding process of an operator, there is a hand shake; on the other hand, the subject needs to keep the body, especially the head, still, which causes imaging problems such as difficulty in acquiring data, image motion artifacts, and the like in the data acquisition process.

Disclosure of Invention

The invention mainly aims to provide a head-mounted ophthalmic OCTA device so as to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:

the embodiment of the invention provides head-mounted ophthalmic OCTA equipment, which comprises: the adjusting mechanism is in transmission fit with the optical path system and at least used for moving the optical path system to a specified position;

the optical path system comprises an imaging optical path and an auxiliary alignment optical path, wherein the imaging optical path is at least used for collecting image information of the detected eyeball, and the auxiliary alignment optical path is at least used for guiding the fixation point position of the detected eyeball so as to align the detected eyeball in the interpupillary distance direction.

Furthermore, the imaging light path comprises a laser collimator, a focusing lens, a two-dimensional scanning vibration mirror, a first lens, a first dichroic mirror, a reflecting mirror and an eye-catching lens, wherein light beams from the light source sequentially pass through the laser collimator and the focusing lens and are incident to the two-dimensional scanning vibration mirror, are reflected by the two-dimensional scanning vibration mirror, then pass through the first lens and are incident to the first dichroic mirror, sequentially pass through the first dichroic mirror and the reflecting mirror and are incident to the eye-catching lens, and are amplified by the eye-catching lens and then enter the detected eyeball of the object.

Compared with the prior art, the invention has the advantages that:

1) according to the head-mounted ophthalmic OCT equipment (probe) provided by the embodiment of the invention, an OCTA scanning device is worn on the head of a measured object to be checked, and the head-mounted ophthalmic OCT equipment (probe) can keep a static or synchronous moving state with the measured object, so that the problem of difficult focusing caused by shaking of the head of the measured object in the conventional OCTA equipment or handheld OCTA equipment is solved, a motion artifact is effectively relieved, and the detection accuracy is improved;

2) the display screen adopted by the head-wearing type ophthalmology OCT equipment (probe) provided by the embodiment of the invention can display different static or dynamic pictures, the images are flexible and changeable, the requirements of different types of detected objects can be met, two eyes of the detected objects can simultaneously watch the display screen, the fixation points of eyeballs of the detected objects are guided to be aligned, and therefore the fatigue feeling when single-eye fixation is adopted is relieved;

3) the head-wearing type ophthalmic OCT device (probe) provided by the embodiment of the invention adopts a head-wearing type structure, has a compact structure, is easy to wear, and can be used for adjusting the buttons to adjust the alignment of special patient groups with parts of hands capable of moving normally after a tested object is worn, so that the hands of a worker are liberated, and the operation of other devices of the worker is facilitated.

Drawings

FIG. 1 is an isometric view of a head mounted ophthalmic OCTA probe provided in an exemplary embodiment of the invention;

FIG. 2 is a schematic diagram of a cross slide adjustment mechanism provided in an exemplary embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an optical path system and a cross slide mechanism according to an exemplary embodiment of the present invention;

fig. 4 is a schematic structural diagram of an optical path system according to an exemplary embodiment of the present invention.

Detailed Description

In view of the deficiencies in the prior art, the inventors of the present invention have made extensive studies and extensive practices to provide technical solutions of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.

The embodiment of the invention provides head-mounted ophthalmic OCTA equipment, which comprises: the adjusting mechanism is in transmission fit with the optical path system and at least used for moving the optical path system to a specified position;

the optical path system comprises an imaging optical path and an auxiliary alignment optical path, wherein the imaging optical path is at least used for collecting image information of the detected eyeball, and the auxiliary alignment optical path is at least used for guiding the fixation point position of the detected eyeball so as to align the detected eyeball in the interpupillary distance direction.

Furthermore, the imaging light path comprises a laser collimator, a focusing lens, a two-dimensional scanning vibration mirror, a first lens, a first dichroic mirror, a reflecting mirror and an eye-catching lens, wherein light beams from the light source sequentially pass through the laser collimator and the focusing lens and are incident to the two-dimensional scanning vibration mirror, are reflected by the two-dimensional scanning vibration mirror, then pass through the first lens and are incident to the first dichroic mirror, sequentially pass through the first dichroic mirror and the reflecting mirror and are incident to the eye-catching lens, and are amplified by the eye-catching lens and then enter the detected eyeball of the object.

Furthermore, the auxiliary alignment light path comprises a display screen, a second dichroic mirror, a second lens, a first dichroic mirror, a reflecting mirror and an ocular lens, partial image light beams from the display screen are reflected by the second dichroic mirror, then pass through the first dichroic mirror, then enter the reflecting mirror, are reflected by the reflecting mirror, then enter the ocular lens, and then enter the detected eyeball of the detected object after being amplified by the ocular lens;

meanwhile, another partial image light beam from the display screen sequentially passes through the second dichroic mirror and the second lens and enters another undetected eyeball to be detected.

Further, the adjusting mechanism comprises a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism is at least used for driving the optical path system to move along a first direction so as to adjust at least the focal length between the ocular lens and the detected eyeball; the second adjusting mechanism is at least used for driving the optical path system to move along a second direction so as to align the optical path system with the detected eyeball in the interpupillary distance direction.

Furthermore, the first adjusting mechanism comprises a first adjusting sliding table arranged along a first direction, a first sliding block and a first driving mechanism, the first sliding block is movably arranged on the first adjusting sliding table and can be driven by the first driving mechanism to move along the first adjusting sliding table, and the optical path system is fixedly matched with the first sliding block and can synchronously move together with the first sliding block.

Furthermore, the second adjusting mechanism comprises a second adjusting sliding table arranged along the second direction, a second sliding block and a second driving mechanism, the second sliding block is movably arranged on the second adjusting sliding table and can be driven by the second driving mechanism to move along the second adjusting sliding table, and the optical path system is fixedly matched with the second sliding block and can synchronously move together with the second sliding block.

Furthermore, the second adjusting sliding table is fixedly arranged on the first sliding block, and the optical path system is fixedly arranged on the second sliding block.

Furthermore, the first adjusting sliding table and the second adjusting sliding table are perpendicularly arranged in a crossed mode.

Further, the optical path system further comprises an imaging shell, the imaging optical path and the auxiliary alignment optical path are encapsulated in the imaging shell, and the imaging shell is in transmission fit with the adjusting mechanism.

Further, the head-mounted shell comprises a shell body and a fixing band, the fixing band is used for fixing the shell body on the head of a human body, the optical path system and the adjusting mechanism are packaged inside the shell body, and the adjusting mechanism is fixedly matched with the shell body.

Further, the shell body is provided with an arc-shaped contour surface matched with the eyes of the human body, and an avoiding groove matched with the bridge of the nose of the human body is further formed in the arc-shaped contour surface.

Furthermore, two avoidance grooves matched with the bridge of the nose of the human body are formed in the arc-shaped contour surface, and the two avoidance grooves are symmetrically distributed in a mirror mode.

Furthermore, the shell body is further provided with an adjusting button connected with the adjusting mechanism, and the adjusting button is connected with the adjusting mechanism.

The technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings, and unless otherwise specified, all the optical devices used in the embodiments of the present invention may be commercially available existing devices.

The invention provides a head-wearing ophthalmic OCTA device, which comprises a head-wearing shell 1, an optical path system 4 and an adjusting mechanism 2, wherein the head-wearing shell 1 comprises a shell body 101 and a fixing belt 105, the optical path system 4 and the adjusting mechanism 2 are packaged inside the shell body 101, the adjusting mechanism 2 is fixedly arranged on the shell body, and the optical path system 4 is in transmission fit with the adjusting mechanism and can move to a specified position under the driving of the adjusting mechanism; the optical path system 4 comprises an imaging shell 3, an imaging optical path and an auxiliary alignment optical path, wherein the imaging optical path and the auxiliary alignment optical path are packaged inside the imaging shell 3, the imaging optical path is at least used for collecting image information of the detected eyeball, and the auxiliary alignment optical path is at least used for guiding the fixation point position of the detected eyeball so as to align the detected eyeball in the interpupillary distance direction.

Specifically, shell body 101 has with human eye assorted arc profile, and, the upper portion and the lower part of arc profile still all are provided with dodge groove 104, two that match with human bridge of the nose portion dodge groove 104 mirror looks symmetric distribution for dodge the interference of bridge of the nose when wearing, fixed band 105 is used for fixing equipment at measurand's head, wear-type equipment can just be worn, also can wear (overturn equipment 180 °) for be used for switching the detection left and right sides two different eyeballs that are detected.

Specifically, referring to fig. 2 and 3, the adjusting mechanism 2 is a cross sliding table adjusting mechanism, the cross sliding table adjusting mechanism includes a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism includes a first adjusting sliding table 201, a first slider and a first driving mechanism, the first slider is movably disposed on the first adjusting sliding table and can move along the first adjusting sliding table under the driving of the first driving mechanism, the second adjusting mechanism includes a second adjusting sliding table 202, a second slider 203 and a second driving mechanism, the second slider 203 is movably disposed on the second adjusting sliding table 202 and can move along the second adjusting sliding table under the driving of the second driving mechanism, wherein the second adjusting sliding table 202 is fixedly disposed on the first slider, the imaging housing 3 of the optical path system 4 is fixedly disposed on the second slider 203, the optical path system 4 can move along the second adjusting sliding table 202 together with the second sliding block 3, the optical path system 4 can move along the first adjusting sliding table 201 together with the second adjusting mechanism and the first sliding block, and the first adjusting mechanism is at least used for driving the optical path system to move along a first direction so as to at least adjust the focal length between the ocular lens 407 and the detected eyeball; the second adjusting mechanism is at least used for driving the optical path system to move along a second direction so as to align the optical path system with the detected eyeball in the interpupillary distance direction.

Specifically, the first adjusting sliding table and the second adjusting sliding table are arranged perpendicularly and crosswise, that is, the first direction and the second direction are arranged perpendicularly, for example, the first adjusting sliding table 201 is a longitudinal adjusting sliding table, the second adjusting sliding table 202 is a transverse adjusting sliding table, the first driving mechanism and the second driving mechanism are both motors, the motors are connected with a transverse adjusting button 102 and a longitudinal adjusting button 103 which are arranged on the outer shell 101, and the adjustment buttons 102 and 103 are adjusted and controlled to realize the forward rotation and the reverse rotation of the motors, so that the movement of the imaging system along different directions is adjusted, that is, the transverse adjustment and the longitudinal adjustment of the adjusting mechanism are controlled.

Specifically, referring to fig. 4, fig. 4 is a schematic structural diagram of an optical path system provided in an exemplary embodiment of the present invention, and optical devices related to the entire optical path system are all installed in a housing, and include a laser collimator 401, a focusing lens 402, a two-dimensional scanning galvanometer 403, a first lens 404, a first dichroic mirror 405, a reflecting mirror 406, an eye lens 407, a display screen 408, a second dichroic mirror 409, and a second lens 410.

Specifically, the imaging optical path system comprises an imaging optical path and an auxiliary alignment optical path, the imaging optical path uses infrared light with a wavelength of 850nm as incident light, the infrared light is collimated and corrected by the laser collimator 401 and then focused by the electronic focusing lens 402, a light beam subjected to focusing processing is reflected by the two-dimensional scanning galvanometer 403 to enter the first lens 404, the light beam passes through the lens 404 and then is reflected by the first dichroic mirror 405 to enter the reflector 406, and is reflected by the reflector 406 to the eye lens 407, and the light beam is amplified by the lens 407 and then enters an eyeball of a detected object;

specifically, the auxiliary alignment optical path includes a display screen 408, a second dichroic mirror 409, and a second lens 410, and the display screen 408 for auxiliary alignment in the auxiliary alignment optical path may display a static or dynamic picture, so as to guide the gaze point position of the detected eye before detection, thereby facilitating alignment of the detected object.

Specifically, the light beam in the imaging light path enters the detected eyeball of the detected object through a → a1 → a2, the data acquisition is completed through the path during the data acquisition, and after the picture is displayed on the display screen 408 in the auxiliary alignment light path, the picture can be subjected to auxiliary alignment through b → b2 → a1 → a2 before the detection; meanwhile, the picture light beam displayed on the display screen 408 enters the other eyeball of the tested object through b → b1, and two eyes watch the display screen simultaneously before data acquisition, so that the fixation point of the tested eye is guided to be aligned, and the fatigue feeling when monocular fixation is adopted is relieved.

When the head-wearing type ophthalmic OCT device (probe) provided by the embodiment of the invention is used, after a measured object wears the device through the fixing band 105, the adjustment of the focal length between the lens and the eyeball can be completed by controlling the motor through the longitudinal adjusting button 103; for the position alignment in the transverse direction, the motor is controlled through the transverse adjusting button 102, so that the eyeball alignment adjustment in the pupil distance direction can be completed; before data acquisition, the auxiliary alignment light path can be matched with the alignment of eyeballs, and after the positions are aligned, a worker operates equipment to finish data acquisition; and when another eye needs to be acquired, the head-mounted OCTA probe is turned over by 180 degrees, and the data acquisition of the other eye can be completed by adopting the same operation.

According to the head-mounted ophthalmic OCT device (probe) provided by the embodiment of the invention, after a tested object is worn by the fixing band 105, the device is adjusted and the probe is aligned with an eyeball and data acquisition is carried out, the optical path system and the tested object can keep a static or synchronous moving state, so that the problems of unclear data acquisition image, data artifact and the like caused by shaking of the head or shaking of the hand of the tested object in the conventional OCTA detection device or the handheld OCTA device are avoided, and the detection precision is improved; after the measured object wears the head-wearing type ophthalmology OCT device (probe), the button can be adjusted by self for special patient groups with parts of hands capable of moving normally, so that the button can be adjusted in an aligned mode, the two hands of workers are liberated, and the operation of other devices of the workers is facilitated.

According to the head-mounted ophthalmic OCT device (probe) provided by the embodiment of the invention, the OCTA scanning device is worn on the head of the measured object to be checked, and the head-mounted ophthalmic OCT device (probe) can keep a static or synchronous moving state with the measured object, so that the problem of difficult focusing caused by shaking of the head of the measured object in the conventional OCTA device or handheld OCTA device is solved, the motion artifact is effectively relieved, and the detection accuracy is improved.

The display screen adopted by the head-mounted ophthalmology OCT equipment (probe) provided by the embodiment of the invention can display different static or dynamic pictures, the images are flexible and changeable, the requirements of different types of detected objects can be met, two eyes of the detected objects can simultaneously watch the display screen, the fixation points of eyeballs of the detected objects are guided to be aligned, and the fatigue feeling when single-eye fixation is adopted is relieved.

The head-wearing type ophthalmic OCT device (probe) provided by the embodiment of the invention adopts a head-wearing type structure, has a compact structure, is easy to wear, and can be used for adjusting the buttons to adjust the alignment of special patient groups with parts of hands capable of moving normally after a tested object is worn, so that the hands of a worker are liberated, and the operation of other devices of the worker is facilitated.

It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.