CN212307794U

CN212307794U - Miniature in-ear imaging device

Info

Publication number: CN212307794U
Application number: CN202020535562.7U
Authority: CN
Inventors: 袁伟; 陈小玲; 贾立峰; 陈知己; 邝邵景
Original assignee: First Affiliated Hospital of PLA Military Medical University
Current assignee: Nanfang Hospital; First Affiliated Hospital of PLA Military Medical University
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-01-08
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a miniature in-ear imaging device relates to medical detection apparatus field, and the concrete scheme is: the image transmission assembly comprises a transmission channel, two ends of the transmission channel are respectively a detection end and an observation end, the illumination assembly is arranged on one side of the observation end of the transmission channel, the illumination assembly comprises an illumination light source and a reflector, the reflector is arranged in the extension direction of the transmission channel and is obliquely arranged relative to the extension direction, and the reflector is positioned in the irradiation direction of the illumination light source and reflects light rays into the transmission channel; the imaging module is arranged on the other side of the reflector relative to the transmission channel and is in signal connection with the display; the micro in-ear imaging device uses the flexible optical fiber, so that the detection effect can be improved; the miniature in-ear imaging device can record a video screen, so that subsequent processing, reference and reference can be conveniently carried out on the video in the later period; the miniature in-ear imaging device has good application effect and high economical efficiency.

Description

Miniature in-ear imaging device

Technical Field

The utility model relates to a medical detection apparatus field, more specifically say that it relates to a miniature in-ear imaging device.

Background

The middle ear operation implantation of artificial ossicular prosthesis is the main treatment method for curing ossicle destruction caused by otitis media. However, the middle ear is deep, the operation and the visual field are narrow, and the stability of the implanted artificial ossicular prosthesis cannot be clinically evaluated in real time during the operation.

At present, the judgment of the stability of the implanted artificial auditory ossicle is mainly carried out by taking subjective judgment through the vision and the touch of an operator in the middle ear operation process or applying indirect methods such as monitoring the hearing of an operator in sound operation by adopting a loudspeaker in AABR/ASSR middle ear operation and the like to detect the stability of the implanted artificial auditory ossicle, but the judgment effect is influenced by insufficient experience of the operator, electromagnetic field interference, background noise, external auditory canal tamponade and the like. At present, no technology at home and abroad can meet the requirement of real-time observation in the operation to ensure the stability of the placement of the artificial auditory ossicle in the operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a miniature in-ear imaging device, simple structure, equipment is less, and low cost is fit for extensively promoting.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a miniature in-ear imaging device comprises an image transmission assembly, an illumination assembly, an imaging module and a display, wherein the image transmission assembly comprises a transmission channel, two ends of the transmission channel are respectively a detection end and an observation end, the illumination assembly is arranged on one side of the observation end of the transmission channel, the illumination assembly comprises an illumination light source and a reflector, the reflector is arranged in the extension direction of the transmission channel and is obliquely arranged relative to the extension direction, and the reflector is positioned in the irradiation direction of the illumination light source and reflects light rays into the transmission channel; the imaging module is arranged on the other side of the reflector relative to the transmission channel and is in signal connection with the display.

In the above scheme, when detection is carried out, the detection end of the transmission channel is inserted into an ear, the illumination assembly is always located at an external position, the illumination light source irradiates the reflector, the reflector reflects light rays into the ear, the observation end of the transmission channel is used for observation, the imaging module comprises a video shooting device which is used for acquiring video information, the shooting device is located at the other side of the reflector relative to the transmission channel, then the shooting device is converted into digital signals through the acquisition card, and the signals are sent to the display to display images in the ear. The ezcap272 video recording box and other related accessories can be adopted, the device is connected to the BNC interface of the liquid crystal monitor through a special data line and is shunted to the video recording box from the interface, and the video recording and the real-time monitoring can be carried out simultaneously. The illumination light source can adopt a high-intensity LED lamp. A miniature imaging module is formed by a miniature microscopic imaging circuit and a high-intensity LED lamp.

Preferably, the transmission channel is a flexible image transmission fiber.

In the above preferred embodiment, the flexible image fiber adopts an image fiber array with a monofilament diameter of 4um, the effective image fiber diameter is 0.45mm, the number of effective detection pixels is equal to the detection area/monofilament area, which is equal to 9935, and the image array is equivalent to 100 × 100, and the identification and judgment of the target can be basically realized. The flexible optical fiber has good transmission effect and can ensure the detection effect under the bending condition.

Preferably, the outer diameter of the optical fiber is not more than 0.8mm, and the optical fiber is sleeved with a bendable metal pipe.

In the preferable scheme, the outer diameter of the flexible image transmission optical fiber is less than or equal to 0.8mm, and the flexible image transmission optical fiber can be installed in a high-strength metal tube. It has certain softness, and safe bending radius is 10 cm. The metal tube is used for protecting the optical fiber; the length of the optical fiber can be specifically set according to actual conditions. Through zero-distance optical transmission, the imaging target in the ear is transferred to the micro imaging module outside dozens of centimeters. And simultaneously transmits the illumination light to the imaging target in the ear through the light splitting optical path.

Preferably, the outer diameter of the metal pipe is not more than 1 mm; so as to ensure the smooth penetration of the transmission channel into the ear.

As a preferred scheme, the illumination light source and the reflector are both arranged in the shell, and the shell is fixedly connected with the metal tube.

In the preferred scheme, the optical fiber is precisely debugged with the tail end of the image and light transmission optical path, and after the debugging is finished, the optical fiber is sealed into a whole. The estimated shape of the closed chamber is a cylinder with the diameter of 20mm and the length of 20 mm. A miniature plug is designed at the tail end of the closed chamber and is used for electrifying and transmitting images.

As a preferable scheme, the optical fiber detection end is provided with a 90-degree field angle lens; and one end of the shell of the illumination component, which is close to the imaging module, is also provided with a 90-degree angle-of-view lens.

In the preferred scheme, the lens is designed to have a 90-degree field angle, the effective imaging range is 3-10 mm, and ultra-short distance imaging can be realized. When the imaging distance is 3mm, the diameter of the imaging surface reaches 4.24mm, and the imaging surface reaches 3mm multiplied by 3 mm.

As a preferred scheme, the inclination angle of the reflector relative to the extending direction of the channel is 45 degrees; the use effect of the illumination light source can be maximized; meanwhile, the transmission channel can be not limited to the optical fiber, and a straight rigid hollow pipe can be used as the transmission channel.

As a preferred scheme, the imaging module is also in signal connection with a storage device; for later processing, reference and reference of the video. The ezcap272 video cassette itself has a corresponding storage device, although others may be used.

Preferably, the micro in-ear imaging device further comprises a fiber fixing bracket. In the using process, after the optical fiber goes deep into the inner ear, an assistant is needed to assist in holding the optical fiber by hands for fixing, fine jitter may occur due to manual operation, the image is unstable, the effect judgment is affected, the space of an operating table is limited, the assistant may affect the operating space of an operator, and the operation is not smooth. To solve this problem, we propose to mount a fiber fixing bracket at the side of the operating table through repeated research and discussion. Considering that the optical fiber has a certain hardness, the insertion direction is between 60 degrees and 90 degrees to reduce the possibility of displacement caused by stress. After the imaging optical fiber is inserted into the ear, the imaging optical fiber is fixed on the bracket firstly, then the bracket is finely adjusted, and the imaging optical fiber is locked after reaching a proper position. Therefore, the problem that the space of an operating table is narrow and small, the operation is possibly interfered by a fixed assistant, and the problem that the optical fiber fixing effect is unstable can be solved.

To sum up, the utility model discloses following beneficial effect has:

(1) the micro in-ear imaging device provided by the utility model uses the flexible optical fiber, which can improve the detection effect;

(2) the utility model provides a micro in-ear imaging device which can record a visual screen, thereby facilitating the subsequent processing, reference and reference of the video in the later period;

(3) the micro in-ear imaging device provided by the utility model can evaluate the operation effect in real time, adjust the treatment scheme, and improve the operation success rate and the postoperative recovery rate of patients;

(4) the micro in-ear imaging device provided by the utility model can effectively avoid poor postoperative rehabilitation effect of patients due to unstable implantation of artificial auditory bone prosthesis, and avoid secondary injury and extra economic burden caused by secondary operation;

(5) the micro in-ear imaging device provided by the utility model has simple assembly, convenient use and strong operability and practicability, and is an important operation auxiliary tool for otologists;

(6) the micro in-ear imaging device provided by the utility model adopts the micro image transmission equipment with the diameter less than 1mm, can extend into the narrow and deep middle ear for observation, and does not influence the operation and other adverse effects on the patient;

(7) the micro in-ear imaging device provided by the utility model can be repeatedly used, can be repeatedly used for real-time evaluation, and can reduce the purchase cost of hospitals and the economic burden of patients;

(8) the utility model provides an imaging device in miniature ear has fine application effect, has very high economic nature simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a micro in-ear imaging device according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a schematic structural diagram of a micro in-ear imaging device according to an embodiment of the present invention;

wherein:

1. a transmission assembly; 2. an imaging module; 3. an illumination light source; 4. a reflective mirror; 5. a lens; 11. a detection end; 12. and (6) observing the end.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A miniature in-ear imaging device comprises an image transmission assembly 1, an illumination assembly, an imaging module 2 and a display, wherein the image transmission assembly 1 comprises a transmission channel, two ends of the transmission channel are respectively a detection end 11 and an observation end 12, the illumination assembly is arranged on one side of the observation end 12 of the transmission channel, the illumination assembly comprises an illumination light source 3 and a reflector 4, the reflector 4 is arranged in the extension direction of the transmission channel and is obliquely arranged relative to the extension direction, and the reflector 4 is positioned in the irradiation direction of the illumination light source 3 and reflects light rays into the transmission channel; the imaging module 2 is arranged on the other side of the reflector 4 opposite to the transmission channel, and the imaging module 2 is in signal connection with the display.

In the above embodiment, when performing detection, the detection end 11 of the transmission channel is inserted into the ear, the illumination assembly is always in an external position, the illumination light source 3 irradiates the reflective mirror 4, the reflective mirror 4 reflects light into the ear, the observation end 12 of the transmission channel is used for observation, the imaging module 2 includes a video camera for acquiring video information, the camera is located on the other side of the reflective mirror 4 opposite to the transmission channel, and then converts the video information into a digital signal through a capture card, and sends the digital signal to the display to display an image in the ear. The ezcap272 video recording box and other related accessories can be adopted, the device is connected to the BNC interface of the liquid crystal monitor through a special data line and is shunted to the video recording box from the interface, and the video recording and the real-time monitoring can be carried out simultaneously. The illumination light source 3 may be a high-intensity LED lamp. And a miniaturized micro-imaging circuit and a high-intensity LED lamp are selected to form the micro-imaging module 2.

As a preferred embodiment, the transmission channel is a flexible image-transmitting fiber.

In the above preferred embodiment, the flexible image transmission fiber adopts an image fiber array with a monofilament diameter of 4um, the effective image fiber diameter is 0.45mm, the number of effective detection pixels is equal to the detection area/monofilament area, which is equal to 9935, and the image array is equivalent to 100 × 100, and the identification and judgment of the target can be basically realized. The flexible optical fiber has good transmission effect and can ensure the detection effect under the bending condition.

In a preferred embodiment, the outer diameter of the optical fiber is not more than 0.8mm, and the optical fiber is sleeved with a bendable metal pipe.

In the preferred embodiment, the outer diameter of the flexible image transmission optical fiber is less than or equal to 0.8mm, and the flexible image transmission optical fiber can be installed in a high-strength metal tube. It has certain softness, and safe bending radius is 10 cm. The metal tube is used for protecting the optical fiber; the length of the optical fiber can be specifically set according to actual conditions. The imaging target in the ear is transferred to the micro imaging module 2 beyond tens of centimeters through zero-distance optical transmission. And simultaneously transmits the illumination light to the imaging target in the ear through the light splitting optical path.

As a preferred embodiment, the outer diameter of the metal tube is not more than 1 mm; so as to ensure the smooth penetration of the transmission channel into the ear.

As a preferred embodiment, the illumination source 3 and the reflector 4 are both disposed within a housing, which is fixedly connected to a metal tube.

In the preferred embodiment, the optical fiber is precisely debugged with the tail end of the image and light transmission optical path, and after the debugging is completed, the optical fiber is sealed into a whole. The estimated shape of the closed chamber is a cylinder with the diameter of 20mm and the length of 20 mm. A miniature plug is designed at the tail end of the closed chamber and is used for electrifying and transmitting images.

As a preferred embodiment, the optical fiber detection end 11 is provided with a 90 ° field angle lens 5; the end of the housing of the illumination assembly close to the imaging module 2 is also provided with a 90-degree field angle lens 5.

In the above preferred embodiment, the lens 5 is designed to have a 90 ° field angle, and the effective imaging range thereof is 3mm-10mm, so that ultra-short distance imaging can be realized. When the imaging distance is 3mm, the diameter of the imaging surface reaches 4.24mm, and the imaging surface reaches 3mm multiplied by 3 mm.

As a preferred embodiment, the mirror 4 is inclined at an angle of 45 ° with respect to the direction of extension of the channel; the use effect of the illumination light source 3 can be maximized; meanwhile, the transmission channel can be not limited to the optical fiber, and a straight rigid hollow pipe can be used as the transmission channel.

As a preferred embodiment, the imaging module 2 is further connected to a storage device through signals; for later processing, reference and reference of the video. The ezcap272 video cassette itself has a corresponding storage device, although others may be used.

As a preferred embodiment, the micro in-ear imaging device further comprises a fiber fixing bracket.

In the above preferred embodiment, during the use process, after the optical fiber enters the inner ear, an assistant is needed to assist holding by hand, so that the picture may be unstable due to slight jitter caused by manual operation, which affects the judgment of the effect, and the space of the operating table is limited, so that the assistant may affect the operating space of the operator, which results in unsmooth operation. To solve this problem, we propose to mount a fiber fixing bracket at the side of the operating table through repeated research and discussion. Considering that the optical fiber has a certain hardness, the insertion direction is between 60 degrees and 90 degrees to reduce the possibility of displacement caused by stress. After the imaging optical fiber is inserted into the ear, the imaging optical fiber is fixed on the bracket firstly, then the bracket is finely adjusted, and the imaging optical fiber is locked after reaching a proper position. Therefore, the problem that the space of an operating table is narrow and small, the operation is possibly interfered by a fixed assistant, and the problem that the optical fiber fixing effect is unstable can be solved.

A miniature image transmission device with a diameter of less than 1mm is required to evaluate the effect of the intra-aural operation. The device is placed inside the ear of a patient through a high strength metal tube (outer diameter 1mm, inner diameter >0.8 mm); the position is about 1mm to 6mm from the observed object, the observed object is about 3mm x 3mm, and black and white imaging is carried out. Due to the absence of light in the ear, illumination by the image transmitting device is also required. The device can be reused, and the length of the high-strength metal tube is about 10cm, so the length of the device is not less than 15 cm.

The working principle is as follows: the real-time detection system for detecting the vibration state of the round window membrane after the auditory ossicle prosthesis is implanted by using the optical fiber sensor realizes real-time dynamic imaging visual observation in the operation. The method can detect the fluctuation change caused by the vibration of the round window membrane after the auditory ossicle is implanted in real time in the operation, thereby realizing the real-time functional verification after the auditory ossicle prosthesis is implanted. Through the real-time dynamic monitoring and preoperative and postoperative hearing examination contrast in the art, fill behind the closed operation chamber, prove the stable reliability of laying the ossicular prosthesis in the art, whether accurate or avoid the prosthesis aversion to lay for guaranteeing artifical ossicle in the art provides the powerful tool.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The miniature in-ear imaging device is characterized by comprising an image transmission assembly (1), an illumination assembly, an imaging module (2) and a display, wherein the image transmission assembly (1) comprises a transmission channel, two ends of the transmission channel are respectively a detection end (11) and an observation end (12), the illumination assembly is arranged on one side of the observation end (12) of the transmission channel and comprises an illumination light source (3) and a reflector (4), the reflector (4) is arranged in the extension direction of the transmission channel and is obliquely arranged relative to the extension direction, and the reflector (4) is positioned in the irradiation direction of the illumination light source (3) and reflects light rays into the transmission channel; imaging module (2) sets up in reflector (4) opposite transmission path's opposite side, imaging module (2) and display signal connection.

2. The miniature in-the-ear imaging device according to claim 1, wherein said transmission channel is a flexible image-transmitting fiber.

3. The miniature in-the-ear imaging device according to claim 2, wherein the optical fiber has an outer diameter of no more than 0.8mm, and the optical fiber is sheathed with a bendable metal tube.

4. The miniature in-the-ear imaging device according to claim 3, wherein the metal tube has an outer diameter of no more than 1 mm.

5. A miniature in-ear imaging device according to claim 3, wherein said illumination source (3) and reflector (4) are both disposed within a housing, the housing being fixedly connected to the metal tube.

6. The miniature in-the-ear imaging device according to claim 5, wherein said fiber detection end (11) is provided with a 90 ° field angle lens (5); one end of the shell of the illumination component, which is close to the imaging module (2), is also provided with a 90-degree angle-of-view lens (5).

7. A miniature in-ear imaging device according to claim 1, wherein said mirror (4) is inclined at an angle of 45 ° with respect to the direction of propagation of the transmission channel.

8. The miniature in-the-ear imaging device according to claim 1, wherein said imaging module (2) is further signally connected to a storage device.

9. The miniature in-the-ear imaging device according to claim 1, further comprising a fiber fixation bracket.