CN109008925B - Integrated electronic laryngoscope for realizing three-dimensional imaging - Google Patents

Abstract

The invention discloses an integrated electronic laryngoscope for realizing three-dimensional imaging, and relates to the technical field of electronic laryngoscopes. The invention comprises a CCD camera, an eyepiece cover, an illumination light guide pipe, an imaging light guide connecting pipe and a light guide imaging operation pipe. One end surface of the eyepiece cover is provided with a conical fluted disc; the first bevel gear on the peripheral side surface of the output shaft of the rotary driving motor is meshed with the tooth profile of the conical fluted disc. The diameter of the tracheal tube is reduced by adopting the single camera through the designed light guide imaging operation tube, the left and right images are rotationally collected by the camera through the eyepiece cover and the rotation driving motor, and the problem that the tracheal tube is thick due to the double lenses of the existing three-dimensional laryngoscope is solved. The light guide imaging operation tube also has an electric actuating bending function, so that the front end of the tube can be bent, the bending deviation angle can be accurately controlled, and the directions of camera shooting and biopsy taking can be adjusted.

Description

Integrated electronic laryngoscope for realizing three-dimensional imaging

Technical Field

The invention belongs to the technical field of electronic laryngoscopes, and particularly relates to an integrated electronic laryngoscope for realizing three-dimensional imaging.

Background

The electronic laryngoscope generally consists of a camera, a hollow hard tube, a handle and a control display module; the front end of the hollow hard tube is provided with a camera, the rear end of the hollow hard tube is fixedly connected with the handle, and a lead can be led into the hollow hard tube; the rear part of the handle is connected with a control display module. In the diagnosis and treatment process using the electronic laryngoscope, the electronic laryngoscope is generally matched with an endotracheal tube for use, namely, a hollow hard tube of the electronic laryngoscope is inserted into the endotracheal tube, and the endotracheal tube is circumferentially coated with the hollow hard tube with a camera and extends into the laryngeal cavity of a patient.

The three-dimensional imaging electronic laryngoscope can generate a three-dimensional image with a stereoscopic impression, can help to truly reflect the physiological structure of the throat of a patient, is clearer and more comprehensive compared with the planar image of the traditional two-dimensional electronic laryngoscope, can better control the direction and the force according to the three-dimensional image in the process of endoscope entering, and avoids physical damage.

The existing three-dimensional imaging laryngoscope needs to be provided with a left lens and a right lens in order to collect pictures with parallax, the left lens and the right lens are staggered with a certain shooting angle, so that a left image and a right image can be collected simultaneously, and the left image and the right image are synthesized into a three-dimensional image in the later stage. Therefore, the diameter of the tracheal tube of the existing three-dimensional imaging laryngoscope is thicker, and the patient feels great discomfort.

On the other hand, the diameter of the existing electronic laryngoscope single-lens tracheal tube is relatively small, so that the stimulation to a patient can be reduced, but three-dimensional acquisition imaging cannot be carried out.

Disclosure of Invention

The invention aims to provide an integrated electronic laryngoscope for realizing three-dimensional imaging.A light guide imaging operation tube adopts a single camera, so that the diameter of a hose inserted into a patient body is reduced; the single camera is driven to rotate to collect images through the eyepiece cover, the first bevel gear and the rotation driving motor, and left and right pictures with certain parallax can be collected by the single camera after rotating for a preset angle, so that three-dimensional picture synthesis is realized, and the problems that the tracheal tube diameter of the existing three-dimensional imaging electronic laryngoscope is thick and the existing single-lens electronic laryngoscope cannot carry out three-dimensional collection imaging are solved; the light guide imaging operation tube also has an electric actuating bending function, so that the front end of the tube can be bent, the bending deviation angle can be accurately controlled, and the directions of camera shooting and biopsy taking can be adjusted.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an integrated electronic laryngoscope for realizing three-dimensional imaging, which comprises a CCD camera, an eyepiece cover, an illumination light guide pipe, an imaging light guide connecting pipe and a light guide imaging operation pipe; the front end of the CCD camera is provided with a connecting cylinder; an eyepiece cover mounting groove is formed in the front end face of the connecting cylinder; an eyepiece cover is fixed on the inner wall of the eyepiece cover mounting groove through a bearing; one end surface of the eyepiece cover is provided with a conical fluted disc; the peripheral side surface of the connecting cylinder is provided with a motor mounting groove; a rotary driving motor is fixed on the inner surface of the motor mounting groove; a first bevel gear is fixed on the peripheral side surface of the output shaft of the rotation driving motor; the first conical tooth is meshed with the tooth profile of the conical fluted disc; one end of the eyepiece cover is in threaded connection with an inner wall at the rear end of the imaging light guide connecting pipe; one end of the illumination light guide pipe is in threaded connection with the other inner wall of the side surface of the imaging light guide connecting pipe; a light guide imaging operation tube penetrates through and is fixed on the surface of the front end of the imaging light guide connecting tube;

the light guide imaging operation tube comprises an inner soft support body, and two support steel wires penetrate through the inner soft support body; an outer protective sleeve layer is fixed on the peripheral side surface of the inner soft support body; the inner soft support body is internally provided with an image transmission optical fiber, an illumination optical fiber and a mechanical channel through hole; a single CCD objective lens is fixed at one end of the image transmission optical fiber; one end of the lighting optical fiber is fixed with a light beam cover glass; the illumination optical fiber and the inner soft support body are both wrapped by the inner soft support body.

Further, the at least one supporting steel wire surrounds a circle of electric actuators, wires connected with the electric actuators extend backwards along the light guide imaging operation tube to the imaging light guide connecting tube, and a control switch is arranged on the outer wall surface of the imaging light guide connecting tube and connected with the wires; the electrical actuator may bend upon stimulation by an electrical stimulation signal delivered by the lead.

Furthermore, the electric brake is made of an electric stimulation telescopic material.

Furthermore, the front end face and the rear end face of the electric actuator are provided with electrode plates, and the leads are respectively connected with the two electrode plates.

Furthermore, the rear end of the eyepiece cover is provided with an eyepiece mounting hole; the inner wall of the eyepiece mounting hole is in interference fit with two eyepieces.

Furthermore, a plurality of operating handles are fixed on the peripheral side surface of the connecting cylinder.

Furthermore, the inner soft support body is made of polyurethane rigid foam.

Further, the outer protective sheath layer is made of medical PVC.

Further, the inner surface of the motor mounting groove is provided with a tooth profile meshing groove; the inner surface of the motor mounting groove is fixed with a rotary driving motor through the tooth profile meshing groove.

Furthermore, the inner wall of the eyepiece cover mounting groove is in threaded connection with a limiting ring.

The invention has the following beneficial effects:

1. the invention adopts a single lens through the designed light guide imaging operation tube, realizes the rotation drive of the acquisition camera by the eyepiece cover and the rotation drive motor, changes the position of the lens through rotation, for example, two images are acquired in the process of rotating the front end of the laryngoscope by 180 degrees, so that a left image and a right image are acquired by using one lens, and the left image and the right image are synthesized in the later stage to obtain a three-dimensional throat image, thereby reducing the diameter of a hose entering the body of a patient, reducing the discomfort of the patient and reducing the occurrence probability of physical damage.

2. The front end of the light guide imaging operation tube has an electric actuating bending function, can accurately control the bending deviation angle, and adjusts the directions of camera shooting and biopsy taking.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an integrated electronic laryngoscope for realizing three-dimensional imaging in a first embodiment of the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 5 is a schematic structural diagram of a supporting wire of an integrated electronic laryngoscope for realizing three-dimensional imaging according to a second embodiment of the invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-CCD camera, 2-connecting cylinder, 3-eyepiece cover, 4-eyepiece, 5-illuminating light guide tube, 6-imaging light guide connecting tube, 7-light guide imaging operation tube, 8-rotating drive motor, 9-operation handle, 10-outer protective sheath layer, 11-inner soft support body, 12-mechanical channel through hole, 13-image transmission fiber, 14-illuminating fiber, 15-supporting steel wire, 1501-electric actuator, 1502-electrode plate, 16-CCD objective lens, 17-light beam cover glass, 18-first conical tooth, 19-bearing, 20-spacing ring, 201-eyepiece cover installation groove, 202-motor installation groove, 203-tooth profile meshing groove, 301-conical fluted disc and 302-eyepiece installation hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First embodiment

Referring to fig. 1-2, the present invention is an integrated electronic laryngoscope for realizing three-dimensional imaging, which comprises a CCD camera 1, aneyepiece cover 3, an illumination light guide tube 5, an imaging lightguide connecting tube 6, a light guideimaging operation tube 7 and anoperation handle 9.

The front end of the CCD camera 1 is provided with a connectingcylinder 2; the end surface of the connectingcylinder 2 at the front end is provided with an eyepiececover mounting groove 201; the inner wall of the eyepiececover mounting groove 201 is fixed with aneyepiece cover 3 through abearing 19; one end surface of theeyepiece cover 3 is provided with a conical fluted disc 301; the peripheral side surface of the connectingcylinder 2 is provided with amotor mounting groove 202; the inner surface of themotor mounting groove 202 is provided with a toothprofile meshing groove 203; the inner surface of themotor mounting groove 202 is fixed with a rotary driving motor 8 through the toothprofile meshing groove 203; afirst bevel gear 18 is fixed on the peripheral side surface of the output shaft of the rotation driving motor 8; the firstconical tooth 18 is in tooth-profile meshing connection with the conical fluted disc 301; the inner wall of the eyepiececover mounting groove 201 is connected with a limitingring 20 through threads. One end of theeyepiece cover 3 is in threaded connection with an inner wall at the rear end of the imaging lightguide connecting pipe 6; one end of the illumination light guide pipe 5 is in threaded connection with the other inner wall of the side surface of the imaging lightguide connecting pipe 6; the front end surface of the imaging lightguide connecting pipe 6 is fixedly penetrated with a light guideimaging operation pipe 7, and the light guideimaging operation pipe 7 is inserted into the throat of a patient for shooting and biopsy sampling. Wherein, one end of theeyepiece cover 3 is provided with aneyepiece mounting hole 302; twoeyepieces 4 are in interference fit with the inner wall of theeyepiece mounting hole 302. Twooperation handles 9 are fixed on the peripheral side surface of the connectingcylinder 2.

As shown in fig. 3-4, the light guideimaging operation tube 7 includes an innersoft support 11 as a base material, and the innersoft support 11 includes a polyurethane rigid foam having a certain deformability and elasticity. Two supportingsteel wires 15 penetrate through the inner soft supportingbody 11, so that the shaping supporting effect is achieved. The side face of the innersoft support body 11 is fixed with an outerprotective sleeve layer 10, and the material of the outerprotective sleeve layer 10 is medical PVC, so that the inner structure is wrapped. Three through channels reaching the front end face of the innersoft support body 11 are arranged inside the inner soft support body, wherein an image transmissionoptical fiber 13 and an illuminationoptical fiber 14 are respectively arranged in the two channels, and the other channel is used as a mechanical channel throughhole 12. The front end of the image transmissionoptical fiber 13 is fixed with a CCDobjective lens 16, and the front end of the illuminationoptical fiber 14 is fixed with abeam cover glass 17. The illuminationoptical fiber 14 is communicated with the illumination light guide pipe 5 at the imaging lightguide connecting pipe 6, so that the light of the external illumination light source is guided to the front end of the illuminationoptical fiber 14 to be emitted, and illumination is provided for laryngoscope imaging in the body of a patient. The image transmissionoptical fiber 13 transmits the optical signal entering through the CCDobjective lens 16 to the imaging lightguide connecting pipe 6, and the optical signal is projected to the CCD camera 1 through the twoeye pieces 4 to realize imaging. The mechanical passage throughhole 12 is for the biopsy device to pass through.

In the imaging process of this embodiment, utilize single-lens to rotate certain angle and gather left and right image respectively, synthesize three-dimensional image, the rotation process includes: the rotation driving motor 8 is started, thefirst bevel gear 18 is meshed with a conical fluted disc 301 on one end face of theeyepiece cover 3 for transmission, theeyepiece cover 3 is driven to rotate, and then the imaging lightguide connecting pipe 6 and the light guideimaging operation pipe 7 are sequentially driven to rotate, the CCDobjective lens 16 at the end part of the light guideimaging operation pipe 7 deviates from the imaging position through rotation, the CCD camera 1 intermittently scans and acquires images, and the left and right images with parallax are acquired and then processed to obtain three-dimensional images. For example, after a left image is collected, the rotation driving motor 8 is started, theeyepiece cover 3 is driven through tooth meshing, and then the light guideimaging operation tube 7 is driven to rotate 180 degrees around the axis of the light guide imaging operation tube, so that the parallax error distance of the CCDobjective lens 16 relative to the collected left image is maximized, and then a right image is collected; the left and right images with parallax can be synthesized to form a three-dimensional image which is displayed on a 3D display screen matched with the electronic laryngoscope, so that a clinician can observe the throat physiological condition of a patient and guide the operation of the laryngoscope.

Second embodiment

The integrated electronic laryngoscope for realizing three-dimensional imaging of the embodiment comprises a CCD camera 1, aneyepiece cover 3, an illumination light guide pipe 5, an imaging lightguide connecting pipe 6, a light guideimaging operation pipe 7 and anoperation handle 9. The front end of the CCD camera 1 is provided with a connectingcylinder 2, and the end surface of the connectingcylinder 2 at the front end is provided with an eyepiececover mounting groove 201; aneyepiece cover 3 is fixed in the eyepiececover mounting groove 201; the peripheral side surface of the connectingcylinder 2 is provided with amotor mounting groove 202; a rotary driving motor 8 is fixed in themotor mounting groove 202, and the rotary driving motor 8 is meshed with a conical fluted disc 301 arranged on the end face of theeyepiece cover 3 through a firstconical tooth 18; theeyepiece cover 3 is in threaded connection with the rear end of the imaging lightguide connecting pipe 6; the lighting light pipe 5 is in threaded connection with the side surface of the imaging lightguide connecting pipe 6; the front end surface of the imaging lightguide connecting pipe 6 is fixedly penetrated with a light guideimaging operation pipe 7, and the light guideimaging operation pipe 7 is inserted into the throat of a patient for shooting and biopsy sampling. The rotation driving motor 8 is in meshing transmission with a conical fluted disc 301 on one end face of theeyepiece cover 3 through afirst bevel gear 18, so as to drive theeyepiece cover 3 to rotate, and further drive the imaging lightguide connecting pipe 6 and the light guideimaging operation pipe 7 to rotate in sequence.

The light guideimaging operation tube 7 comprises an innersoft support body 11, twosupport steel wires 15 penetrate through the innersoft support body 11, an outerprotective sleeve layer 10 is fixed on the peripheral side face of the innersoft support body 11, three penetrating channels are arranged inside the innersoft support body 11, image transmissionoptical fibers 13 and illuminationoptical fibers 14 are respectively placed in the two channels, and the other channel is used as a mechanical channel throughhole 12. The front end of the image transmissionoptical fiber 13 is fixed with a CCDobjective lens 16, and the front end of the illuminationoptical fiber 14 is fixed with abeam cover glass 17. The above structure is the same as the first embodiment, and reference is made to fig. 1 to 4 for the accompanying drawings, which are not described again.

Fig. 5 is a schematic structural view of the supportingwire 15 of the integrated electronic laryngoscope in this embodiment. At least one supportingsteel wire 15 of the light guideimaging operation tube 7 surrounds a circle ofelectric actuators 1501 at a position near the front end of the light guideimaging operation tube 7, a lead wire connected to theelectric actuators 1501 extends backward along the light guideimaging operation tube 7 to the imaging lightguide connection tube 6, and a control switch is provided on the outer wall surface of the imaging lightguide connection tube 6, the lead wire being connected to the control switch. Theelectric actuator 1501 can be made of piezoelectric ceramics, PVDF (polyvinylidene fluoride) and other electric stimulation telescopic materials, which can be driven by direct current and can generate large driving force, and the front and rear end faces of theelectric actuator 1501 are provided withelectrode plates 1502, the leads are respectively connected with the twoelectrode plates 1502, an electric field is formed between the twoelectrode plates 1502 by an electric stimulation signal of the leads, the electric field stimulates theelectric actuator 1501 to bend, and theelectric actuator 1501 returns to the original state under self stress after the electric field is removed; therefore, theelectric actuator 1501 can be bent under the stimulation of the electric excitation signal transmitted by the lead, so as to drive the front end of the supportingsteel wire 15 to be bent, further to bend the front end of the light guideimaging operation tube 7, and to change the orientation of the CCDobjective lens 16, thereby achieving the purpose of adjusting the shooting and biopsy taking directions. The control switch is used for controlling the on-off of the electric excitation signal so as to control the bending and the recovery of the front end of the light guideimaging operation tube 7.

Therefore, the driving mechanism is adopted to drive the single camera to rotationally acquire the left image and the right image with parallax, the two cameras required by the existing three-dimensional imaging laryngoscope are eliminated, and the diameter of the hose inserted into the body of a patient is reduced; and has the function of electrically actuating the bending, can accurately control the bending deviation angle and adjust the directions of camera shooting and biopsy taking. The laryngoscope can ensure good three-dimensional imaging effect and wide imaging visual field, simultaneously reduce the uncomfortable feeling of a patient in the laryngoscope operation process, and is beneficial to eliminating the risk of physical injury.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. An integrated electronic laryngoscope for realizing three-dimensional imaging is characterized by comprising a CCD camera, an eyepiece cover, an illumination light guide pipe, an imaging light guide connecting pipe and a light guide imaging operation pipe; the front end of the CCD camera is provided with a connecting cylinder; an eyepiece cover mounting groove is formed in the front end face of the connecting cylinder; an eyepiece cover is fixed on the inner wall of the eyepiece cover mounting groove through a bearing; one end surface of the eyepiece cover is provided with a conical fluted disc; the peripheral side surface of the connecting cylinder is provided with a motor mounting groove; a rotary driving motor is fixed on the inner surface of the motor mounting groove; a first bevel gear is fixed on the peripheral side surface of the output shaft of the rotation driving motor; the first conical tooth is meshed with the tooth profile of the conical fluted disc; one end of the eyepiece cover is in threaded connection with an inner wall at the rear end of the imaging light guide connecting pipe; one end of the illumination light guide pipe is in threaded connection with the other inner wall of the side surface of the imaging light guide connecting pipe; a light guide imaging operation tube penetrates through and is fixed on the surface of the front end of the imaging light guide connecting tube;

the light guide imaging operation tube comprises an inner soft support body, and two support steel wires penetrate through the inner soft support body; an outer protective sleeve layer is fixed on the peripheral side surface of the inner soft support body; the inner soft support body is internally provided with an image transmission optical fiber, an illumination optical fiber and a mechanical channel through hole; a single CCD objective lens is fixed at one end of the image transmission optical fiber; one end of the lighting optical fiber is fixed with a light beam cover glass; the illumination optical fiber and the inner soft support body are both wrapped by the inner soft support body;

the light guide imaging operation tube adopts a single camera and drives the single camera to rotationally collect images through the eyepiece cover, the first bevel gear and the rotation driving motor.

2. The integrated electronic laryngoscope according to claim 1, wherein the at least one supporting steel wire surrounds a ring of electric actuators, a lead wire connected with the electric actuators extends backwards along the light guide imaging operation tube to the imaging light guide connecting tube, and a control switch is arranged on the outer wall surface of the imaging light guide connecting tube, and the lead wire is connected with the control switch; the electrical actuator may bend upon stimulation by an electrical stimulation signal delivered by the lead.

3. The integrated electronic laryngoscope as recited in claim 2, wherein the electrical actuator is made of an electro-stimulating telescopic material.

4. The integrated electronic laryngoscope as recited in claim 3, wherein the electric actuator has electrode pads on both front and rear surfaces thereof, and the lead wires are connected to the two electrode pads, respectively.

5. The integrated electronic laryngoscope as recited in claim 4, wherein the rear end of the eyepiece cover is provided with an eyepiece mounting hole; the inner wall of the eyepiece mounting hole is in interference fit with two eyepieces.

6. The integrated electronic laryngoscope as recited in claim 5, wherein a plurality of operating handles are secured to the peripheral side surface of the connecting cylinder.

7. The integrated electronic laryngoscope as recited in claim 6, wherein the material of the internal soft support body is polyurethane rigid foam.

8. The integrated electronic laryngoscope as recited in claim 7, wherein the outer protective cover layer is made of medical PVC.

9. The integrated electronic laryngoscope as recited in claim 8, wherein the motor mounting groove is provided with a tooth profile engaging groove on the inner surface; the inner surface of the motor mounting groove is fixed with a rotary driving motor through the tooth profile meshing groove.

10. The integrated electronic laryngoscope as recited in claim 9, wherein a limit ring is screwed on the inner wall of the eyepiece cover mounting groove.

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