CN210228088U

CN210228088U - Indirect nasopharyngoscope

Info

Publication number: CN210228088U
Application number: CN201920633228.2U
Authority: CN
Inventors: Weili Kong; 孔维丽; Xiang Fang; 方向; Feng Xu; 许凤; Yun Zheng; 郑芸; Junhao Wu; 吴君昊
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-04-03
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses an indirect nasopharyngoscope, including the handle and with handle one end fixed connection's sight glass, the sight glass is trapezoidal. The circular lens is improved into the trapezoidal lens by using the trapezoidal observation mirror according to the anatomical characteristics of the palatoglossal arch, the palatopharyngeal arch and the uvula of a human body, the upper end is small, and the lower end is large, so that the circular lens can easily bypass the palatoglossal arch and the uvula without causing the pharyngeal reflex of a patient. Meanwhile, the observation area is larger by using the trapezoid observation mirror, and the target object is easier to observe.

Description

Indirect nasopharyngoscope

Technical Field

The utility model belongs to the field of medical equipment, a quick nasopharynx inspection equipment of outpatient service is related to, concretely relates to indirect nasopharyngoscope.

Background

Indirect nasopharyngoscope examination is also known as retrorhinoscopy, and is known as indirect nasopharyngoscope because the position of the nasopharyngoscope is opposite to the position of the body. The appearance of the indirect nasopharyngoscope is similar to that of a small indirect laryngoscope. In indirect nasopharyngoscope examination, the patient is held with the left hand and the tongue back is pressed with the tongue pressing plate, and the right hand is held with the mouth and delivered to the soft palate, so that the mirror surface faces the nasopharynx to observe the posterior nares. In implementing the present invention, the inventor finds that there is at least one of the following problems in the prior art:

1. this check, while simple, has a high failure rate.

2. When carrying out nasopharyngoscope examination, doctors can easily touch the posterior pharyngeal wall of patients to trigger the pharyngeal reflex.

3. The existing indirect nasopharyngoscope widely used in outpatient clinic is essentially a small-size indirect laryngoscope, and the design has obvious defects. Firstly, a human body palatoglossal arch, a palatopharyngeal arch and a uvula form an M-shaped structure together, and a circular mirror is used for easily touching the rear wall of a pharynx to cause pharyngeal reflex, so that a patient suffers from strong discomfort; secondly the doctor uses the circular shape mirror difficult to walk around uvula in operation process, makes and is difficult to observe the retronasal hole under the direct vision, needs to recommend the patient to do the electronic fiber nasopharynx laryngoscope inspection this moment, and not only the cost is more expensive, and the inspection process includes local anesthesia moreover, and the hose gets into etc. from the nasal cavity and can cause the discomfort of different degree, has all brought great psychological burden for the patient.

4. During the inspection process, doctors need frontal mirrors for auxiliary observation, reflected light of the frontal mirrors irradiates the rear pharyngeal wall, the range of the reflected light falling on the mirror surface is small, the brightness is dark, and the structure which the inspectors want to see cannot be observed clearly.

Disclosure of Invention

In view of this, the present invention provides an indirect nasopharyngoscope for observing the examination site more conveniently.

The inventor is through long-term exploration and attempt to and experiment and effort many times, continuous innovation of reform, for solving at least one problem in the above technical problem, the utility model provides a technical scheme is, provides an indirect nasopharyngoscope, including the handle and with handle one end fixed connection's sight glass, the sight glass is trapezoidal.

According to a further embodiment of the indirect nasopharyngoscope of the present invention, said trapezoid is an isosceles trapezoid, said isosceles trapezoid has an upper base length of 10-18mm, a lower base length of 14-22mm and a height of 12-20mm, and said handle is connected to said lower base of said isosceles trapezoid.

According to the utility model discloses a concrete implementation mode of indirect nasopharyngoscope, isosceles trapezoid's upper base is long for 10mm, and the length of going to the bottom is 14mm, and the height is 12 mm.

According to the utility model discloses a concrete implementation mode of indirect nasopharyngoscope, isosceles trapezoid's upper base is 12mm long, and the length of going to the bottom is 16mm, and the height is 14 mm.

According to the utility model discloses a concrete implementation mode of indirect nasopharyngoscope, isosceles trapezoid's upper base is long for 14mm, and the length of going to the bottom is 18mm, and the height is 16 mm.

According to the utility model discloses a concrete implementation mode of indirect nasopharyngoscope, isosceles trapezoid's upper base is 16mm long, and the length of going to the bottom is 20mm, and the height is 18 mm.

According to the utility model discloses a concrete implementation mode of indirect nasopharyngoscope, isosceles trapezoid's upper base is 18mm long, and the length of going to the bottom is 22mm, and the height is 20 mm.

According to the utility model discloses an indirect nasopharyngoscope's a preferred embodiment, the handle is the hollow tube, the sight glass link of hollow tube is provided with speculum and light trap, light emitting device is connected to the other end of hollow tube.

According to the utility model discloses a concrete implementation of indirect nasopharyngoscope, illuminator is the closed circuit that battery, LED lamp pearl and switch constitute.

According to a specific embodiment of the indirect nasopharyngoscope of the utility model, install astigmatic mirror on the light trap.

Compared with the prior art, one of the technical solutions has the following advantages:

a) the utility model discloses an embodiment uses trapezoidal sight glass, according to human palatoglossal arch, palatopharyngeal arch, uvula anatomy characteristic, improves circular lens into trapezoidal lens, and the upper end is little, the lower extreme is great, walks around palatoglossal arch and uvula easily like this and does not arouse patient's pharyngeal reflex.

b) The observation area is larger by using the trapezoid observation mirror, and the target object is easier to observe.

c) According to anatomical data, the distance between palatopharyngeal arches of children is 18.34 +/-4.42 mm, the distance between pharyngeal arches of adults is 23.67 +/-6.31 mm, and the intersection angle of the tangent lines of the two palatopharyngeal arches is about 70-110 degrees under the mouth opening state, so that 5 trapezoidal lenses with different models are designed by the inventor.

d) The utility model discloses an in the embodiment, through the light guide structure design, can directly beat light on observing the position, can observe the inspection position more clearly.

e) The utility model discloses an in the embodiment, use astigmatic mirror astigmatism, the illumination scope is bigger, more is favorable to observing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a front view of the indirect nasopharyngoscope according to a preferred embodiment of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a perspective view of fig. 1.

Fig. 5 is a schematic sectional view a-a in fig. 3.

Fig. 6 is a schematic enlarged view of part I of fig. 5.

The labels in the figure are respectively:

100 of a handle, and a handle,

the length of the square pipe of 101,

102 of the length of a circular pipe,

103 of the light channel, and a light source,

104 of the light-reflecting mirror, and a light-reflecting mirror,

110 of the observation mirror and the observation mirror,

120 a power supply bin for storing the power supply,

130 astigmatic mirror.

Detailed Description

The following description is made with reference to the accompanying drawings and a specific embodiment.

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

Example 1

See fig. 1. The indirect nasopharyngoscope described in this embodiment includes a handle 100 and a viewing mirror 110 fixedly connected to one end of the handle, where the viewing mirror 110 is trapezoidal. Preferably, the trapezoid is an isosceles trapezoid, the upper base of the isosceles trapezoid is 10-18mm long, the lower base of the isosceles trapezoid is 14-22mm long, and the height of the isosceles trapezoid is 12-20mm, and the handle is connected with the lower base of the isosceles trapezoid. According to anatomical data, the palatopharyngeal arch spacing of children is 18.34 +/-4.42 mm, the pharyngeal arch spacing of adults is 23.67 +/-6.31 mm, and according to the mouth opening state of people, the intersection angle of tangents of the two palatopharyngeal arches is about 70-110 degrees, so that the inventor designs 5 trapezoidal lenses with different models, which are respectively:

A. the upper bottom is 10mm long, the lower bottom is 14mm long and 12mm high;

B. the upper bottom is 12mm long, the lower bottom is 16mm long and 14mm high;

C. the upper bottom is 14mm long, the lower bottom is 18mm long and 16mm high;

D. the upper bottom is 16mm long, the lower bottom is 20mm long and 18mm high;

E. the upper bottom is 18mm long, the lower bottom is 22mm long and 20mm high.

The angle between the observation mirror 110 and the handle is 120 degrees or 129 degrees.

According to the anatomical characteristics of the human palatoglossal arch, the palatopharyngeal arch and the uvula, the circular lens is improved into a trapezoidal lens, the upper end is small, and the lower end is large, so that the circular lens easily bypasses the palatoglossal arch and the uvula and does not cause the pharyngeal reflex of a patient. Moreover, the trapezoidal observation mirror is used, the observation area is larger than that of the existing circular observation mirror, and the target object can be observed more easily. The design of the trapezoid observation mirror is accepted by outpatient teachers in our hospital.

Example 2

See fig. 1-6. The indirect nasopharyngoscope described in this embodiment includes a handle 100 and a scope 110 fixedly connected to one end of the handle, and the angle between the scope 110 and the handle is 120 ° or 129 °. The viewing mirror 110 has a trapezoidal shape. Preferably, the trapezoid is an isosceles trapezoid, the upper base of the isosceles trapezoid is 10-18mm long, the lower base of the isosceles trapezoid is 14-22mm long, and the height of the isosceles trapezoid is 12-20mm, and the handle is connected with the lower base of the isosceles trapezoid. According to anatomical data, the palatopharyngeal arch spacing of children is 18.34 +/-4.42 mm, the pharyngeal arch spacing of adults is 23.67 +/-6.31 mm, and according to the mouth opening state of people, the intersection angle of tangents of the two palatopharyngeal arches is about 70-110 degrees, so that the inventor designs 5 trapezoidal lenses with different models, which are respectively:

A. the upper bottom is 10mm long, the lower bottom is 14mm long and 12mm high;

B. the upper bottom is 12mm long, the lower bottom is 16mm long and 14mm high;

C. the upper bottom is 14mm long, the lower bottom is 18mm long and 16mm high;

D. the upper bottom is 16mm long, the lower bottom is 20mm long and 18mm high;

E. the upper bottom is 18mm long, the lower bottom is 22mm long and 20mm high.

The handle 100 is a hollow tube with a light channel 103 therein. The hollow pipe is divided into a square pipe section 101 and a circular pipe section 102, and the square pipe section 101 and the circular pipe section 102 are in linear transition connection. The square pipe section 101 is connected to the central position of the lower bottom of the observation mirror 110.

The inner lower corner of the connecting end of the square pipe segment 101 and the observation mirror 110 is provided with a reflector 104 and a light hole, and the light hole is positioned right above the reflector 104. The other end of the hollow tube is connected with a light-emitting device. Light generated by the light emitting device reaches the reflecting mirror 104 through the light passage 103, is reflected by the reflecting mirror 104, and then passes upward through the light transmitting hole. The included angle between the mirror surface of the reflector 104 and the bottom surface of the square pipe section 101 is 45 degrees, and horizontal light rays can be refracted into vertical light rays.

The light-emitting device is a closed circuit formed by a battery, LED lamp beads and a power switch, the battery is installed in the power bin 120, and the LED lamp beads are installed right in front of the circular tube section 102. The LED lamp beads are 3.0-3.6V white light lamps, and the battery is a lithium battery or a button battery. The power switch (not shown in the drawings) is mounted on the power magazine 120 housing. The power supply bin 120 is on the same plane with the top of the handle 100, so as not to obstruct the view.

In order to increase the illumination area, an astigmatic lens 130 is mounted on the light transmission hole, the astigmatic lens 130 is a concave lens, the lower bottom surface of the concave lens is a plane, and the upper bottom surface is a concave surface. After the light is scattered, the maximum included angle a is 5-15 degrees, and the control of the included angle a mainly lies in the selection of the concave lens material and the concave surface radian design, and can be known through simple calculation. The concave lens can be made of medical glass with the refractive index of 1.5-1.8.

In the prior art, a frontal mirror is used for polishing, light can be projected on the mirror surface, and observation is not facilitated. This embodiment is through refracting, scattering the back with light, more does benefit to the observation, and the observation position can be seen more clearly.

The power supply bin and the handle can be integrally formed and are preferentially connected in a detachable mode. The handle and the observation mirror part are convenient to disinfect by adopting a disassembly mode; the battery compartment part is a small flashlight.

The light channel can be a hollow tube or a glass rod.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. An indirect nasopharyngoscope comprises a handle and an observation mirror fixedly connected with one end of the handle, and is characterized in that the observation mirror is trapezoidal.

2. The indirect nasopharyngoscope according to claim 1, wherein the trapezoid is an isosceles trapezoid having an upper base length of 10-18mm, a lower base length of 14-22mm, and a height of 12-20mm, and the handle is connected to the lower base of the isosceles trapezoid.

3. The indirect nasopharyngoscope according to claim 2, wherein the isosceles trapezoid has an upper base length of 10mm, a lower base length of 14mm, and a height of 12 mm.

4. The indirect nasopharyngoscope according to claim 2, wherein the isosceles trapezoid has an upper base length of 12mm, a lower base length of 16mm, and a height of 14 mm.

5. The indirect nasopharyngoscope according to claim 2, wherein the isosceles trapezoid has an upper base length of 14mm, a lower base length of 18mm, and a height of 16 mm.

6. The indirect nasopharyngoscope according to claim 2, wherein the isosceles trapezoid has an upper base length of 16mm, a lower base length of 20mm, and a height of 18 mm.

7. The indirect nasopharyngoscope according to claim 2, wherein the isosceles trapezoid has an upper base length of 18mm, a lower base length of 22mm, and a height of 20 mm.

8. The indirect nasopharyngoscope according to claim 1, wherein the handle is a hollow tube, the scope connecting end of the hollow tube is provided with a reflector and a light hole, and the other end of the hollow tube is connected with a light emitting device.

9. The indirect nasopharyngoscope according to claim 8, wherein the light emitting device is a closed circuit consisting of a battery, an LED lamp bead and a power switch.

10. The indirect nasopharyngoscope according to claim 8, wherein an astigmatic mirror is mounted on the light-transmitting aperture.