阅读说明：本技术 一种头戴式oct探头 (Head-mounted OCT probe ) 是由 谢林春 杨建龙 杨燕鹤 黄昕 胡衍 刘江 于 2019-10-30 设计创作，主要内容包括：本发明涉及眼底光学相干断层扫描成像技术领域,具体涉及一种头戴式OCT探头。包括：头戴式壳体,包括对应于被测用户眼部的测试位置；成像壳体,设有对应于所述测试位置的成像光路；调节组件,用于将所述成像壳体可移动地安装在所述可穿戴壳体中使得所述成像光路和所述测试位置的相对位置可调整。上述技术方案中,成像壳体内的成像光路与头戴式壳体相结合,使得光路系统与被测用户能够保持相对静止状态,随着被测用户的头部晃动而一起运动,解决常规OCT设备或者手持式OCT设备由于被测用户头部不断晃动带来的难以对焦、获取图像困难以及运动伪影等问题。(The invention relates to the technical field of fundus optical coherence tomography imaging, in particular to a head-mounted OCT probe. The method comprises the following steps: a head-mounted housing including a test position corresponding to an eye of a user under test; the imaging shell is provided with an imaging light path corresponding to the test position; an adjustment assembly to movably mount the imaging housing in the wearable housing such that a relative position of the imaging optical path and the test position is adjustable. According to the technical scheme, the imaging optical path in the imaging shell is combined with the head-mounted shell, so that the optical path system and the detected user can keep a relatively static state and move together with the head of the detected user, and the problems that the conventional OCT equipment or the handheld OCT equipment is difficult to focus, difficult to acquire images, motion artifacts and the like caused by the fact that the head of the detected user continuously shakes are solved.)

1. A head-mounted OCT probe, comprising:

a head-mounted housing including a test position corresponding to an eye of a user under test;

the imaging shell is provided with an imaging light path corresponding to the test position;

an adjustment assembly to movably mount the imaging housing in the wearable housing such that a relative position of the imaging optical path and the test position is adjustable.

2. A head-mounted OCT probe according to claim 1, characterized in that:

the test positions comprise a first test position corresponding to the left eye of the tested user and a second test position corresponding to the right eye of the tested user;

the imaging optical path includes a first optical path corresponding to the first test position and a second optical path corresponding to the second test position.

3. A head-mounted OCT probe according to claim 2, characterized in that:

a laser collimator, a focusing lens, a scanning galvanometer, a direction-adjustable reflector, a first lens, a second lens, a first reflector, a second reflector, a first eye lens and a second eye lens are arranged in the imaging shell;

when the direction-adjustable reflector faces a first direction, the laser collimator, the focus-adjustable lens, the scanning galvanometer, the direction-adjustable reflector, the first lens, the first reflector and the first ocular lens form a first light path corresponding to the first test position;

when the reflector with the adjustable direction faces the second direction, the laser collimator, the focusing lens, the scanning galvanometer, the reflector with the adjustable direction, the second lens, the second reflector and the second ocular lens form a second light path corresponding to the second test position.

4. A head-mounted OCT probe according to claim 3, characterized in that:

the adjustable focus lens is an electronic adjustable focus lens.

5. A head-mounted OCT probe according to claim 3, characterized in that:

the head-mounted housing includes a lens adjustment;

the lens adjusting piece is connected with the direction adjustable reflector and used for controlling the direction of the direction adjustable reflector to be switched between the first direction and the second direction.

6. A head-mounted OCT probe of any one of claims 1-5, wherein:

the adjustment assembly includes a longitudinal adjustment member for adjusting a longitudinal distance between the imaging housing and the testing position;

the head-wearing shell is provided with a longitudinal adjusting hole corresponding to the longitudinal adjusting piece;

the longitudinal adjustment member is mounted on the imaging housing, passes through the longitudinal adjustment aperture, and has a longitudinal adjustment end located outside the head-mounted housing.

7. A head-mounted OCT probe according to claim 1, characterized in that:

the adjustment assembly includes a lateral adjustment member for adjusting a lateral distance between the imaging housing and the testing position;

the head-mounted shell is provided with a transverse adjusting hole corresponding to the transverse adjusting piece;

the lateral adjustment member is mounted on the imaging housing, passes through the lateral adjustment aperture, and has a lateral adjustment end located outside the head-mounted housing.

8. A head-mounted OCT probe according to claim 1, characterized in that:

the adjustment assembly comprises a longitudinal adjustment member for adjusting a longitudinal distance between the imaging housing and the testing position and a transverse adjustment member for adjusting a transverse distance between the imaging housing and the testing position;

the head-mounted shell is provided with a longitudinal adjusting hole corresponding to the longitudinal adjusting piece and a transverse adjusting hole corresponding to the transverse adjusting piece;

the longitudinal adjustment member is mounted on the imaging housing, passes through the longitudinal adjustment aperture, and has a longitudinal adjustment end located outside the head-mounted housing;

the lateral adjustment member is mounted on the imaging housing, passes through the lateral adjustment aperture, and has a lateral adjustment end located outside the head-mounted housing.

9. A head-mounted OCT probe according to claim 8, characterized in that:

the transverse adjusting piece comprises a transverse sliding block which is slidably arranged in the transverse adjusting hole;

the adjusting assembly further comprises a transverse adjusting plate and a longitudinal adjusting plate;

the horizontal regulating plate is fixed on the horizontal slider, the bottom of horizontal regulating plate is equipped with longitudinal guide shaft, longitudinal regulating plate slidable installs on the longitudinal guide shaft, the formation of image casing is fixed on the longitudinal regulating plate.

10. A head-mounted OCT probe according to claim 9, characterized in that:

the longitudinal adjusting plate is provided with a transverse avoiding hole;

the longitudinal adjusting end of the longitudinal adjusting piece penetrates through the transverse avoiding hole and the longitudinal adjusting hole and is located outside the head-mounted shell.

Technical Field

The invention relates to the technical field of fundus optical coherence tomography imaging, in particular to a head-mounted OCT probe.

Background

Optical Coherence Tomography (OCT), a non-invasive imaging modality, has been widely used in recent years for the diagnosis and treatment of ophthalmic diseases, such as retinal vascular diseases, glaucoma, diabetic retinopathy, and many other ophthalmic diseases.

At present, most commercial ophthalmic OCT equipment in the market is large in size, complex and high in cost, is greatly influenced by factors such as external environment, high degree of matching of patients and the like in the data acquisition process, needs a complex fixed focusing mechanism, and is particularly limited for carrying out data acquisition on patients of special groups such as infants, retinopathy premature infants, bedridden severe patients, anesthetics, patients who cannot keep needed postures and fixed and the like. Currently, various hand-held OCT probes are also developed in the market for clinical applications to address such special patient requirements. (e.g., a hand-held OCT probe and OCT measurement system disclosed in utility model patent publication No. CN202699100U, publication No. 2013, 1-month 30). However, in the operation process of such a handheld OCT probe, a doctor needs to manually focus, the hand remains in a static and non-shaking state, and the doctor can complete data acquisition by keeping the patient in the focusing state for several minutes, which requires the doctor to have a too hard operation technical requirement, and the hand of the doctor cannot completely shake, which brings the imaging problems of data acquisition difficulty, motion artifacts and the like in the data acquisition process.

Disclosure of Invention

Aiming at the problem that data acquisition of the OCT equipment in the desktop installation mode in the existing market cannot meet various special patient crowds with different requirements, the invention provides the head-wearing OCT probe which is simple and convenient to operate, can be used for different patient crowds with different requirements, can effectively eliminate motion artifacts and moves along with the head.

The invention provides a head-mounted OCT probe, characterized by comprising:

a head-mounted housing including a test position corresponding to an eye of a user under test;

the imaging shell is provided with an imaging light path corresponding to the test position;

an adjustment assembly to movably mount the imaging housing in the wearable housing such that a relative position of the imaging optical path and the test position is adjustable.

According to the technical scheme, the imaging optical path in the imaging shell is combined with the head-mounted shell, so that the optical path system and the detected user can keep a relatively static state and move together with the head of the detected user, and the problems that the conventional OCT equipment or the handheld OCT equipment is difficult to focus, difficult to acquire images, motion artifacts and the like caused by the fact that the head of the detected user continuously shakes are solved.

Preferably, the test positions comprise a first test position corresponding to the left eye of the tested user and a second test position corresponding to the right eye of the tested user; the imaging optical path includes a first optical path corresponding to the first test position and a second optical path corresponding to the second test position. Contain two imaging optical paths and be used for detecting by survey user's left eye and right eye respectively, need not to dress again or switch the probe and can accomplish the detection of left eye or right eye, effectively improve data acquisition efficiency.

Preferably, a laser collimator, a focusing lens, a scanning galvanometer, a direction-adjustable reflector, a first lens, a second lens, a first reflector, a second reflector, a first eye lens and a second eye lens are arranged in the imaging shell; when the direction-adjustable reflector faces a first direction, the laser collimator, the focus-adjustable lens, the scanning galvanometer, the direction-adjustable reflector, the first lens, the first reflector and the first ocular lens form a first light path corresponding to the first test position; when the reflector with the adjustable direction faces the second direction, the laser collimator, the focusing lens, the scanning galvanometer, the reflector with the adjustable direction, the second lens, the second reflector and the second ocular lens form a second light path corresponding to the second test position. The switching of the first light path and the second light path, namely the detection switching of the left eye or the right eye, can be completed by switching the direction adjustable reflector.

Preferably, the focus lens is an electronically adjustable focus lens. The electronic focusing lens can be quickly changed from a concave surface to a convex surface after being electrified, and different diopter and focal length can be adjusted according to requirements.

Preferably, the head mounted housing comprises a lens adjustment; the lens adjusting piece is connected with the direction adjustable reflector and used for controlling the direction of the direction adjustable reflector to be switched between the first direction and the second direction. The detection switching of the left eye or the right eye can be completed through the adjustment of the lens adjusting piece, and the operation of a doctor is convenient and fast.

Preferably, the adjustment assembly comprises a longitudinal adjustment member for adjusting a longitudinal distance between the imaging housing and the testing position; the head-wearing shell is provided with a longitudinal adjusting hole corresponding to the longitudinal adjusting piece; the longitudinal adjustment member is mounted on the imaging housing, passes through the longitudinal adjustment aperture, and has a longitudinal adjustment end located outside the head-mounted housing. After the head-wearing shell is worn on the head of a user to be measured, the adjustment of the focal length between the eye lens and the eyeball can be completed through the longitudinal adjusting piece.

Preferably, the adjustment assembly comprises a lateral adjustment member for adjusting a lateral distance between the imaging housing and the testing position; the head-mounted shell is provided with a transverse adjusting hole corresponding to the transverse adjusting piece; the lateral adjustment member is mounted on the imaging housing, passes through the lateral adjustment aperture, and has a lateral adjustment end located outside the head-mounted housing. For the tested users with different pupil distances, the eyeball alignment adjustment in the direction of the pupil distance can be completed by adjusting the transverse adjusting piece.

Preferably, the adjustment assembly comprises a longitudinal adjustment member for adjusting a longitudinal distance between the imaging housing and the testing position and a lateral adjustment member for adjusting a lateral distance between the imaging housing and the testing position; the head-mounted shell is provided with a longitudinal adjusting hole corresponding to the longitudinal adjusting piece and a transverse adjusting hole corresponding to the transverse adjusting piece; the longitudinal adjustment member is mounted on the imaging housing, passes through the longitudinal adjustment aperture, and has a longitudinal adjustment end located outside the head-mounted housing; the lateral adjustment member is mounted on the imaging housing, passes through the lateral adjustment aperture, and has a lateral adjustment end located outside the head-mounted housing. After the tested user wears the head-wearing shell, the adjustment of the focal length between the ocular lens and the eyeball can be completed through the longitudinal adjusting piece; for the tested users with different pupil distances, the eyeball alignment adjustment in the direction of the pupil distance can be completed by adjusting the transverse adjusting piece.

Preferably, said lateral adjustment member comprises a lateral slider slidably mounted in said lateral adjustment aperture; the adjusting assembly further comprises a transverse adjusting plate and a longitudinal adjusting plate; the horizontal regulating plate is fixed on the horizontal slider, the bottom of horizontal regulating plate is equipped with longitudinal guide shaft, longitudinal regulating plate slidable installs on the longitudinal guide shaft, the formation of image casing is fixed on the longitudinal regulating plate.

Preferably, the longitudinal adjusting plate is provided with a transverse avoiding hole; the longitudinal adjusting end of the longitudinal adjusting piece penetrates through the transverse avoiding hole and the longitudinal adjusting hole and is located outside the head-mounted shell. When the imaging shell is adjusted along the transverse direction, the longitudinal adjusting piece slides relatively along the transverse avoiding hole, so that the longitudinal adjusting piece is prevented from interfering the movement of the imaging shell along the transverse direction.

The invention has the following beneficial effects:

1. the imaging shell used by the invention comprises two light paths, and data acquisition switching of the left eye or the right eye can be completed only by adjusting the lens adjusting piece without switching equipment during data acquisition, thereby effectively improving the data acquisition efficiency.

2. The imaging shell used by the invention is combined with a head-wearing structure, the optical path system and a tested user can keep a relative static state and move along with the shaking of the head of the tested object, and the problems of difficult focusing, difficult image acquisition, motion artifacts and the like caused by the continuous shaking of the head of the tested object of the conventional OCT equipment or the handheld OCT equipment are solved.

3. The invention adopts a head-wearing structure, has compact structure and is easy to wear. The design of wear-type ensures that this equipment does not receive the place restriction, has good environmental suitability, not only can satisfy conventional patient's demand, can also satisfy the infant, retinopathy premature infant, bed serious patient, anesthesia, can't keep special crowd's patient's such as required posture and fixed patient demand.

Drawings

FIG. 1 is an isometric view of an embodiment of a head-mounted OCT probe of the invention;

FIG. 2 is a bottom isometric view of the embodiment of the head-mounted probe shown in FIG. 1;

FIG. 3 is an isometric view of an imaging housing in an embodiment of the invention;

FIG. 4 is a schematic perspective view of a longitudinal adjustment plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an optical path system according to the present invention;

fig. 6 is a schematic perspective view of a lateral adjustment plate according to an embodiment of the invention.

Detailed Description

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that the conventional terms should be interpreted as having a meaning that is consistent with their meaning in the relevant art and this disclosure. The present disclosure is to be considered as an example of the invention and is not intended to limit the invention to the particular embodiments.

Fig. 1-6 are schematic structural diagrams of an embodiment of a head-mounted OCT probe according to the present invention.

A head-mounted OCT probe, as shown in figures 1, 2, comprises a head-mounted housing 1 and an imaging housing 2, and an adjustment assembly for movably mounting the imaging housing 2 in the head-mounted housing 1.

The head-mounted housing 1 may be any structure similar to a helmet or glasses, which can be worn on the head of a user, and includes a testing position, which corresponds to the eyes of the user after the user wears the head-mounted housing 1 on the head, so as to collect testing data for the eyes of the user. The test position may be a hole, a channel, or a window provided on the head-mounted housing 1 for the light path to enter and exit. An imaging optical path arranged corresponding to the test position is arranged in the imaging shell and used for carrying out OCT data acquisition on an object (such as an eyeball of a user wearing the head-mounted probe) at the test position.

Preferably, the test positions of the head-mounted case 1 in the present embodiment include a first test position corresponding to the left eye of the user to be tested and a second test position corresponding to the right eye of the user to be tested. When the tested user wears the head-wearing type shell 1 on the head, the first testing position is just aligned with the left eye of the user, and the second testing position is just aligned with the right eye of the user. The optical devices related to the whole optical path are fixed in the imaging shell and comprise a laser collimator 301, a focusing lens 302, a scanning galvanometer 303, a direction adjustable reflector 3052, a first lens 304a, a second lens 304b, a first reflector 3051a, a second reflector 3051b, a first ocular lens 306a and a second ocular lens 306 b. Wherein a first eyepiece 306a is mounted at a location corresponding to a first test position and a second eyepiece 306b is mounted at a location corresponding to a second test position. As shown in fig. 5, when the direction-adjustable mirror 3052 faces the first direction a, the laser collimator 301, the focusing lens 302, the scanning galvanometer 303, the direction-adjustable mirror 3052, the first lens 304a, the first mirror 3051a, and the first eyepiece 306a form a first light path L1 corresponding to the first test position; when the direction-adjustable mirror 3052 faces the second direction B, the laser collimator 301, the focus-adjustable lens 302, the scanning galvanometer 303, the direction-adjustable mirror 3052, the second lens 304B, the second mirror 3051B, and the second eyepiece 306B are used for a second light path L2 corresponding to the second test position. Imaging light path adopts the infrared light that wavelength is 800~850nm, through laser collimator 301, and the light beam is through adjustable focus lens 302 (adjustable focus lens 302 in this embodiment is electron focusing lens, can adjust different focuses as required in the experiment) after the collimation is corrected, and the infrared light beam after the focusing is handled is after scanning galvanometer 303 reflection: the light beam in the first light path L1 enters the first lens 304a after being reflected by the direction-adjustable mirror 3052, and then passes through the first mirror 3051a, and then passes through the first ocular lens 306a, and enters the left eyeball of the subject after being amplified; the light beam in the second light path L2 enters the second lens 304b after being reflected by the direction-adjustable mirror 3052, passes through the second mirror 3051b, and then passes through the second ocular lens 306b, and enters the right eyeball of the person to be measured after being amplified.

The adjusting assembly comprises a longitudinal adjusting part 202 for adjusting the longitudinal distance between the imaging shell 2 and the testing position of the head-mounted shell 1 to complete the focal length adjustment between the lens and the eyeball, and a transverse adjusting part 401 for adjusting the transverse distance between the imaging shell 2 and the testing position to complete the eyeball alignment adjustment in the direction of the pupil distance of the tested user. As shown in fig. 1, a longitudinal adjustment hole 102 corresponding to the longitudinal adjustment member 202 and a lateral adjustment hole 101 corresponding to the lateral adjustment member 401 are provided on the top surface of the head-mounted housing 1, and a lens adjustment member 103 is provided on the bottom surface of the head-mounted housing 1. The longitudinal adjustment member 202 is mounted on the imaging housing 2, passes through the longitudinal adjustment hole, and has a longitudinal adjustment end located outside the head mount housing 1. The lateral adjustment member 401 is mounted on the imaging housing, passes through the lateral adjustment hole 101, and has a lateral adjustment end located outside the head mount housing 1. The lens adjuster 103 is connected to the direction adjustable mirror 3052 in the imaging housing 2 for controlling the orientation thereof to switch between a first position a and a second position B: for example, the lens adjusting member 103 in this embodiment may be in the form of a knob, and the switching between the first light path L1 and the second light path L2, that is, the detection switching for the left eye or the right eye, is completed by performing clockwise or counterclockwise 90 ° direction adjustment by the lens adjusting member.

Preferably, the adjusting assembly of the present embodiment further comprises a transverse adjusting plate 4 and a longitudinal adjusting plate 201. As shown in fig. 3, the lateral adjustment member 401 includes a lateral slider 402, and the lateral adjustment member is a rod-shaped structure, and one end thereof is mounted on the imaging housing 2 through the lateral slider 402, and the other end thereof passes through the lateral adjustment hole 101 and is located outside the head mount housing 1. The lateral slider 402 is slidably mounted in the lateral adjustment hole 101, and one surface of the lateral adjustment plate 4 is fixed to the lateral slider 402 and the other surface is fixedly mounted with the imaging housing 2, so that the imaging housing 2 can move laterally with respect to the head mount housing 1 along with the sliding of the lateral slider 402 in the lateral adjustment hole 101. In the data acquisition process, eyeball alignment in the interpupillary distance direction can be completed by adjusting the transverse adjusting rod 401. As shown in fig. 6, two longitudinal guide shafts 403 parallel to each other are further installed at the bottom of the lateral adjustment plate 4, the longitudinal adjustment plate 201 is provided with longitudinal guide holes 204 corresponding to the two longitudinal guide shafts 403, and the longitudinal adjustment holes 204 of the longitudinal adjustment plate 201 are sleeved on the longitudinal guide shafts 403. It is ensured that there is a gap between the upper lateral adjustment plate 4 and the lower imaging housing 2 after the longitudinal adjustment plate 201 is mounted on the longitudinal guide shaft 403 so that the longitudinal adjustment plate 201 can slide along the longitudinal guide shaft 403. The longitudinal adjusting plate 201 is provided with a transverse avoiding hole 203 extending along the transverse direction, the longitudinal adjusting member 202 in the embodiment is a rod-shaped structure, one end of the longitudinal adjusting member is connected with the imaging shell 2, and the other end of the longitudinal adjusting member sequentially penetrates through the transverse avoiding hole 203 and the longitudinal adjusting hole 102 and is positioned outside the head-mounted shell 1. When the longitudinal adjusting member 202 slides along the longitudinal adjusting hole 102, the imaging housing 2 can be driven to adjust along the longitudinal direction, so as to adjust the distance between the lens and the eyeball. The longitudinal adjuster 202 slides relatively along the lateral relief hole 203 when the imaging housing 2 is adjusted in the lateral direction, thereby preventing the longitudinal adjuster 202 from interfering with the movement of the imaging housing 2 in the lateral direction.

When the head-wearing OCT probe provided by the invention is used, aiming at patient groups with different requirements, the focusing adjustment of eyeballs can be independently completed through the transverse adjusting plate and the longitudinal adjusting plate. When the head-wearing OCT probe equipment collects data, the head-wearing OCT probe equipment moves together with the head of a measured object in a shaking mode, and the problems that in the conventional OCT equipment or handheld OCT equipment, the head of the measured object is difficult to focus, images are difficult to acquire and motion artifacts are caused by continuous shaking or hand shaking can be solved. And still include two light paths among the wear-type OCT probe, need not to change equipment and only need adjust lens regulating part and can accomplish the switching that the left eye detected or the right eye detected, reducible needs left eye and the time that the right eyeglass head switched among the conventional OCT check out test set, effectively improve detection efficiency.

Although embodiments of the present invention have been described, various changes or modifications may be made by one of ordinary skill in the art within the scope of the appended claims.