CN219166457U

CN219166457U - Ultrasonic measuring probe

Info

Publication number: CN219166457U
Application number: CN202223543866.6U
Authority: CN
Inventors: 孙涛; 王佳; 韩天恒
Original assignee: Beijing Jiuchen Intelligent Medical Equipment Co ltd
Current assignee: Beijing Jiuchen Intelligent Medical Equipment Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-13
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses an ultrasonic measuring probe which comprises a first shell, a second shell, an ultrasonic emission crystal, a light emitter and a polaroid, wherein the first shell is arranged at the front end of the second shell and is in rotary connection with the second shell; the ultrasonic wave transmitting crystal is arranged on the front end surface of the first cavity of the first shell and is used for transmitting or receiving ultrasonic wave signals; the light emitter is arranged in the second cavity of the second shell and is used for emitting partial polarized light; the polarizer is disposed within the first chamber, the polarizer allowing only the partially polarized light in a particular direction to pass. The utility model utilizes the property of the polaroid that the polaroid can selectively transmit the polarized component in the direction parallel to the horizontal axis, and can realize the continuous adjustment of the brightness by rotating the second shell.

Description

Ultrasonic measuring probe

Technical Field

The utility model relates to the technical field of ophthalmic medical instruments, in particular to an ultrasonic measuring probe.

Background

Ophthalmic diseases such as vitreous and retina diseases, ocular optics, glaucoma, optic neuropathy, cataract and the like are commonly studied by ophthalmology. Among them, the thickness of cornea and anterior chamber depth are important in guiding clinical work in various ophthalmic diseases such as keratopathy, tonometry, glaucoma, ametropia, cataract, retina and other diseases. The ophthalmic ultrasonic biometric probe is used in conjunction with an ophthalmic ultrasonic meter. The measuring probe is directly arranged at the corneal vertex of the measured eye, emits ultrasonic waves into the eye, and measures biological parameters such as anterior chamber depth, lens thickness, vitreous body length, eye axis length and the like of the eye by utilizing the principle of a pulse ultrasonic echo reflection method.

At present, an ophthalmic ultrasonic measuring instrument is utilized to capture an image of a part to be observed, when the pupil generates a photoreaction, the tissue structure of the corner part of the room is observed, and the obtained observation result can provide a powerful judgment basis for eye disease diagnosis. In general, a doctor operates a lot of instruments, and in order to guide the gaze of a patient, the doctor needs to hold a light source such as a photoelectric pen or other lighting equipment, and the operation steps of the doctor are increased. Or, some ultrasonic measuring probes with guide light sources can not be adjusted due to fixed brightness, and can not meet the demands of patients with different age groups or different ophthalmic diseases on fixation light.

Disclosure of Invention

The utility model mainly aims to provide an ultrasonic measuring probe, which aims to solve the problem that illumination fixation of an ophthalmic ultrasonic measuring probe with a light source cannot be adjusted.

In order to achieve the above object, the ultrasonic measurement probe provided by the utility model comprises a first shell, a second shell, an ultrasonic emission crystal, a light emitter and a polaroid, wherein the first shell is arranged at the front end of the second shell and is in rotary connection with the second shell; the ultrasonic wave transmitting crystal is arranged on the front end surface of the first cavity of the first shell and is used for transmitting or receiving ultrasonic wave signals; the light emitter is arranged in the second cavity of the second shell and is used for emitting partial polarized light; the polarizer is disposed within the first chamber, the polarizer allowing only the partially polarized light in a particular direction to pass.

Optionally, the first shell and the second shell are hollow cylinder structures in the interior, and the front end of the second shell stretches into the rear end of the first shell to be connected with the first shell in a rotating mode.

Optionally, the first shell and the second shell are in hollow cylinder structures, and the front end of the second shell stretches into the rear end of the first shell and is connected with the first shell in a rotating mode.

Optionally, a first convex lens is disposed on the front end face of the ultrasonic wave emitting crystal.

Optionally, the ultrasonic measurement probe further includes a light spot adjusting assembly, the light spot adjusting assembly is disposed in the first cavity and located between the polarizer and the first convex lens, and the light spot adjusting assembly is used for adjusting the size of the emergent light spot.

Optionally, the light spot adjusting component comprises a second convex lens and a concave lens, and the second convex lens is fixedly arranged in the first cavity and is positioned in front of the polaroid; the concave lens is arranged between the first convex lens and the second convex lens and can move back and forth between the first convex lens and the second convex lens.

Optionally, the facula adjusting part further includes a sliding part, the sliding part includes a sliding rail and a sliding block, the sliding rail is disposed on the first housing and extends along the front-back direction of the first housing, one end of the sliding block is fixedly connected with the concave lens, the other end of the sliding block is slidably connected with the sliding rail, and the concave lens moves back and forth under the traction of the sliding block.

Optionally, a corresponding avoidance channel is arranged on the first shell, and the sliding block is arranged in the way that the avoidance channel protrudes out of the first shell in a penetrating way.

Optionally, the light emitter is suspended in the second chamber through a tube seat, and the light emitter is located at an axial center position of the second chamber.

Optionally, a circuit board electrically connected with the light emitter is further arranged in the second cavity, and a switch button electrically connected with the circuit board is arranged outside the second shell.

The utility model relates to an ultrasonic measuring probe, which comprises a first shell, a second shell, an ultrasonic transmitting crystal, a light emitter and a polaroid, wherein the first shell is arranged at the front end of the second shell and is in rotary connection with the second shell. The rotary connection means that the second shell and the internal components thereof can rotate around the central shaft of the ultrasonic measuring probe, and the first shell and the internal components of the first shell are kept still. The ultrasonic wave transmitting crystal is arranged on the front end face of the first cavity of the first shell and is used for transmitting or receiving ultrasonic wave signals; the light emitter is arranged in the second cavity of the second shell and is used for emitting partial polarized light. The light vector of the partially polarized light in each direction is asymmetric, the amplitude distribution in the main polarization direction is strongest, and the amplitude distribution in the direction perpendicular thereto is weakest. The light beam emitted by the light emitter can be regarded as a superposition of light of the horizontal amplitude component and light of the vertical amplitude component. The polarizing plate is arranged in the first cavity, and is an artificial diaphragm which has selective absorption performance on different light vibration, so that a special direction exists in the diaphragm, when a beam of light irradiates the diaphragm, the light vibration component perpendicular to the direction is completely absorbed, and only the light vibration component parallel to the direction passes through, namely only light along a certain specific direction is allowed to pass through. The second shell is rotated, the main polarization direction of the light beam emitted by the light emitter is rotated along with the rotation, the included angle between the main polarization direction of part of polarized light and the horizontal axis of the polaroid is also changed, the polarized light intensity distribution projected on the horizontal axis direction of the polaroid is also changed, and finally the intensity of the light beam passing through the polaroid is also regulated along with the change, so that the light stimulus intensity of the eyeball irradiated by the light emitter is changed.

In summary, the ultrasonic measuring probe of the present utility model utilizes the property that the polarizing plate has a polarization component capable of selectively transmitting light in a direction parallel to a horizontal axis thereof, and can achieve continuous adjustment of light brightness by rotating the second housing, so that light intensity can be continuously changed between a maximum value and a minimum value.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an ultrasonic probe according to an embodiment of the present utility model;

FIG. 2 is a plan view showing a part of the structure of a first housing of the ultrasonic measuring probe of the present utility model;

fig. 3 is a schematic structural view of a sliding assembly of the ultrasonic measuring probe of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The ophthalmic ultrasonic biometric probe is used in conjunction with an ophthalmic ultrasonic meter. The measuring probe is directly arranged at the corneal vertex of the measured eye, emits ultrasonic waves into the eye, and measures biological parameters such as anterior chamber depth, lens thickness, vitreous body length, eye axis length and the like of the eye by utilizing the principle of a pulse ultrasonic echo reflection method. At present, an ophthalmic ultrasonic measuring instrument is utilized to capture an image of a part to be observed, when the pupil generates a photoreaction, the tissue structure of the corner part of the room is observed, and the obtained observation result can provide a powerful judgment basis for eye disease diagnosis. In general, a doctor operates a lot of instruments, and in order to guide the gaze of a patient, the doctor needs to hold a light source such as a photoelectric pen or other lighting equipment, and the operation steps of the doctor are increased. Or, some ultrasonic measuring probes with guide light sources can not be adjusted due to fixed brightness, and can not meet the demands of patients with different age groups or different ophthalmic diseases on fixation light.

To solve the above problems, the present utility model proposes an ultrasonic measurement probe 100 for use with an ophthalmic ultrasonic measurement instrument. The working principle is as follows: the light beam irradiates the eyeball to be inspected, so that the pupil contracts to generate light reflection, and the ophthalmic ultrasonic measuring instrument is convenient to capture the image of the eyeball to be inspected.

The ultrasonic measuring probe 100 of the present utility model comprises a first housing 10 and a second housing 20, an ultrasonic transmitting crystal 30, a light emitter 21 and a polarizing plate 11, wherein the first housing 10 is arranged at the front end of the second housing 20 and is rotatably connected with the second housing 20; the ultrasonic wave transmitting crystal 30 is arranged on the front end surface of the first chamber of the first shell 10 and is used for transmitting or receiving ultrasonic wave signals; the light emitter 21 is arranged in the second cavity of the second shell 20 and is used for emitting partial polarized light; the polarizer 11 is provided in the first chamber, and the polarizer 11 allows only partially polarized light in a specific direction to pass through.

The first casing 10 and the second casing 20 are hollow cylinder structures, a first chamber is formed in the first casing 10, a second chamber is formed in the second casing 20, and the rear end of the first chamber is rotatably connected with the front end of the second chamber. Wherein, the rotational connection means that the second housing 20 and its internal components can rotate around the central axis of the ultrasonic measuring probe 100, and the first housing 10 and its internal components remain stationary. In the embodiment shown in the drawings, the front end refers to the end of the ultrasonic measurement probe 100 that faces toward the object under measurement when in operation, and the rear end refers to the end that faces away from the object under measurement. A light emitter 21 is arranged in the second chamber for emitting a part of the polarized light. For example, the light emitter 21 may be a laser emitter.

The amplitude distribution of the partially polarized light in the main polarization direction is the strongest, and the amplitude distribution in the direction perpendicular thereto is the weakest. The light beam emitted by the light emitter 21 can be regarded as a superposition of light of the horizontal amplitude component and light of the vertical amplitude component.

An ultrasonic wave emitting crystal 30 and a polaroid 11 are arranged in the first chamber, wherein the ultrasonic wave emitting crystal 30 is of a circular structure and is arranged on the front end face of the first chamber and used for emitting or receiving ultrasonic signals, and the polaroid 11 is arranged behind the ultrasonic wave emitting crystal 30 and only allows partial polarized light in a specific direction to pass through. The ultrasonic wave emitting crystal 30 emits ultrasonic waves of 10MHz to 15MHz, and the ultrasonic waves are reflected back to the ultrasonic wave emitting crystal 30 after entering human eyes, and the receiving and transmitting time of the ultrasonic waves is measured by the ophthalmologic ultrasonic measuring instrument.

The polarizer 11 is an artificial film having selective absorption of different light shocks, so that a specific direction is provided in the film, and when a beam of light is irradiated onto the film, the light shock component perpendicular to the direction is completely absorbed, and only the light shock component parallel to the direction is allowed to pass, i.e., only light in a specific direction is allowed to pass.

By rotating the second housing 20, the main polarization direction of the light beam emitted from the light emitter 21 is rotated, the included angle between the main polarization direction of part of polarized light and the horizontal axis of the polarizer 11 is changed, the polarized light intensity distribution projected on the horizontal axis direction of the polarizer 11 is changed, and finally the intensity of the light beam passing through the polarizer 11 is adjusted, thereby changing the light stimulus intensity of the eyeball irradiated by the light emitter 21.

In summary, the ultrasonic measuring probe 100 of the present utility model utilizes the property of the polarizer 11 to selectively transmit light having polarization components parallel to the horizontal axis thereof, and can achieve continuous adjustment of brightness by rotating the second housing 20, so that the light intensity can be continuously changed between a maximum value and a minimum value, so as to adapt to the demands of different patients for gazing light.

Further, the front end of the second housing 20 extends into the rear end of the first housing 10 and is rotatably connected to the first housing 10.

The inner diameter of the front end of the second housing 20 is matched with the inner diameter of the rear end of the first housing 10, and the inner diameter of the front end of the second housing 20 is slightly smaller than the inner diameter of the rear end of the first housing 10, so that the front end of the second housing 20 can extend into the rear end of the first housing 10 to rotate relative to the first housing 10. The inner wall of the rear end of the first shell 10 is provided with an annular groove, the front end of the second shell 20 is provided with a convex ring matched with the groove, the first shell 10 and the second shell 20 are in rotary connection through the matching of the groove and the convex ring, namely the second shell 20 is rotated, and the first shell 10 and parts inside the first shell 10 are kept motionless.

Alternatively, the rear end of the first housing 10 may be provided with an internal threaded hollow cylindrical structure, the front end of the second housing 20 may be provided with an external threaded hollow cylindrical structure matching the internal threaded hollow cylindrical structure, the first housing 10 and the second housing 20 are rotatably connected by the cooperation of the internal threaded hollow cylindrical structure and the external threaded hollow cylindrical structure, that is, the second housing 20 is rotated, and the first housing 10 and the components inside the first housing 10 remain stationary.

The front end surface of the ultrasonic wave emitting crystal 30 is provided with a first convex lens 12, and the light beam emitted from the light emitter 21 is collected in the first convex lens 12. The ultrasonic wave emitting crystal 30 and the first convex lens 12 may be stuck together by a sticking method. After the light emitted by the light emitter 21 is regulated, the light is condensed into a light spot to be projected on the mirror surface of the first convex lens 12, so as to guide the human eyes to watch the target.

In making ophthalmic diagnoses, larger spots are sometimes required to stimulate pupils' response to light for certain audience populations, such as the elderly and those with vision defects (myopia, amblyopia, etc.). In view of this problem, an embodiment of the ultrasonic measurement probe 100 of the present utility model further includes a spot adjusting assembly 40, where the spot adjusting assembly 40 is disposed in the first cavity and between the polarizer 11 and the first convex lens 12, and the spot adjusting assembly 40 is used for adjusting the size of the outgoing spot.

The light spot adjusting assembly 40 comprises a second convex lens 41 and a concave lens 42, wherein the second convex lens 41 is fixedly arranged in the first cavity and positioned in front of the polaroid 11; the concave lens 42 is provided between the first convex lens 12 and the second convex lens 41, and is movable back and forth between the first convex lens 12 and the second convex lens 41.

The light spot adjusting assembly 40 further comprises a sliding assembly, the sliding assembly comprises a sliding rail 43 and a sliding block 44, the sliding rail 43 is arranged on the first shell 10 and extends along the front-back direction of the first shell 10, one end of the sliding block 44 is fixedly connected with the concave lens 42, the other end of the sliding block 44 is slidably connected with the sliding rail 43, and the concave lens 42 moves back and forth under the traction of the sliding block 44.

The first shell 10 is provided with a corresponding avoidance channel 13, and the sliding block 44 penetrates through the avoidance channel 13 and protrudes out of the first shell 10.

The steps of adjusting the light spot of the ultrasonic measuring probe 100 are as follows: the sliding sheet is shifted, so that the concave lens 42 moves back and forth within a certain range, and the focal length of the combined lens formed by the second convex lens 41 and the concave lens 42 is changed accordingly, so that the light spot projected on the first convex lens 12 is adjusted to a proper size.

The light emitter 21 is suspended in the second chamber by the stem 22, and the light emitter 21 is located at the axial center position of the second chamber.

A battery and a circuit board electrically connected to the light emitter 21 are also provided in the second chamber, and a switch button 23 electrically connected to the circuit board is provided outside the second housing 20. The battery acts on the light emitter 21 through the circuit board, and the switch button 23 controls whether the circuit board is operated, so that the switching operation of the light emitter 21 can be controlled.

The second casing 20 is provided with the sleeve pipe 24 facing away from the first casing 10, and sleeve pipe 24 embeds has end cap 25, and end cap 25 is used for carrying out the shutoff with the cavity, and the one end of sleeve pipe 24 facing away from first casing 10 is provided with the protection wire cover 26, and the power cord passes end cap 25 and gets into protection wire cover 26 and draw outside and be connected with power plug again. The stem 22, sleeve 24 may be made of a poly-potassium aldehyde PUM material.

The ultrasonic measurement probe 100 further includes a sheath and a sheath cover 50, the sheath cover covers the outer surfaces of the first housing 10 and the second housing 20, and the sheath cover 50 covers the front end surface of the first housing 10 and is connected with the sheath. The outer jacket and the protective sleeve 50 may be rubber sleeves that protect the outer shell from knocks.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An ultrasonic measurement probe, comprising:

the first shell is arranged at the front end of the second shell and is rotationally connected with the second shell;

the ultrasonic wave transmitting crystal is arranged on the front end face of the first cavity of the first shell and is used for transmitting or receiving ultrasonic signals;

the light emitter is arranged in the second cavity of the second shell and is used for emitting partial polarized light;

a polarizer disposed within the first chamber, the polarizer allowing only the partially polarized light of a particular direction to pass.

2. The ultrasonic measurement probe of claim 1, wherein the first housing and the second housing are hollow cylindrical structures, and a front end of the second housing extends into a rear end of the first housing and is rotatably connected to the first housing.

3. The ultrasonic measurement probe of claim 2, wherein an inner wall of the rear end of the first housing is provided with an annular groove, the front end of the second housing is provided with a convex ring matched with the groove, and the first housing and the second housing are in rotational connection through the matching of the groove and the convex ring.

4. The ultrasonic measurement probe of claim 1, wherein a front end face of the ultrasonic emission crystal is provided with a first convex lens.

5. The ultrasonic measurement probe of claim 4, further comprising a spot adjustment assembly disposed within the first chamber and between the polarizer and the first convex lens, the spot adjustment assembly configured to adjust the size of the outgoing spot.

6. The ultrasonic measurement probe of claim 5, wherein the spot adjusting assembly comprises a second convex lens and a concave lens, the second convex lens being fixedly disposed within the first chamber and in front of the polarizer; the concave lens is arranged between the first convex lens and the second convex lens and can move back and forth between the first convex lens and the second convex lens.

7. The ultrasonic measurement probe of claim 6, wherein the spot adjustment assembly further comprises a slip assembly comprising:

the sliding rail is arranged on the first shell and extends along the front-back direction of the first shell; and

the concave lens is characterized by comprising a sliding block, wherein one end of the sliding block is fixedly connected with the concave lens, the other end of the sliding block is in sliding connection with the sliding rail, and the concave lens moves back and forth under the traction of the sliding block.

8. The ultrasonic measurement probe of claim 7, wherein the first housing is provided with a corresponding avoidance channel, and the slider is disposed through the avoidance channel to protrude out of the first housing.

9. An ultrasonic measurement probe according to any one of claims 1 to 8 wherein the light emitter is suspended within the second chamber by a socket, the light emitter being located at an axial location of the second chamber.

10. The ultrasonic measurement probe of any one of claims 1 to 8, wherein a circuit board electrically connected to the light emitter is further provided in the second chamber, and a switch button electrically connected to the circuit board is provided outside the second housing.