CN212261335U

CN212261335U - Pupil size measuring pen

Info

Publication number: CN212261335U
Application number: CN202020428217.3U
Authority: CN
Inventors: 唐小璐; 李小强; 赵海康; 王凤鹿; 王海东; 曾娟; 刘建荣; 白艳; 高燕; 张学策
Original assignee: Second Affiliated Hospital of Xian Medical University
Current assignee: Second Affiliated Hospital of Xian Medical University
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-01-01
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a pupil size measuring pen, which comprises a pen body and a measuring head, wherein one end of the pen body is provided with a light source, and the measuring head is detachably arranged at the end part of the pen body; the measuring head includes convex lens, scale and is used for installing convex lens the fixing device on one's body, when measuring pupil size, the measuring head is installed in the light path of light source, the light that the light source takes place is parallel light column through convex lens conversion, after the scale with the scale on eyes, because convex lens's emergent light is parallel light, consequently can not change through scale back scale interval, need not control the distance of measuring pen and eyes, according to shining the scale mark on eyes can the quick accurate size of reading the pupil.

Description

Pupil size measuring pen

Technical Field

The utility model relates to a medical care device specifically is a pupil size measuring pen.

Background

The pupil pen is a medical instrument commonly used by medical staff in neurology department, can be used for observing the sensitivity of the pupils of a patient to light reaction and measuring the size of the pupils, and the currently clinically used methods for measuring the size of the pupils mainly comprise two methods: the medical staff carries out subjective judgment according to experience after irradiating the pupils of the patient by using a pupil pen, the accuracy of the method is greatly influenced by the working experience of the measurer and the degree of grasp of the size of the staff, so that different medical staff have difference on the observation result of the same patient and the change of the state of the patient cannot be accurately reflected; the second method is a picture comparison method, i.e. medical personnel compare the pupil size of the patient with the dots with different diameters on the standard card, and the dot closest to the pupil size of the patient is used as the pupil size of the patient, and the method also has certain error and is inconvenient to operate. Therefore, the above two methods cannot simply, objectively and accurately measure the pupil size.

SUMMERY OF THE UTILITY MODEL

Measure the unsafe problem of pupil size among the prior art, the utility model provides a pupil size measuring pen can the quick accurate size that detects the pupil.

The utility model discloses a realize through following technical scheme:

a pupil size measuring pen comprises a pen body and a measuring head, wherein a light source is arranged at one end of the pen body, and the measuring head is detachably arranged at the end part of the pen body;

the measuring head includes convex lens, scale and is used for installing convex lens fixing device on the body of a pen, and when measuring pupil size, the measuring head is installed on the light path of light source to convex lens's focus is coaxial with the light source, and convex lens's emergent light shines on the pupil through the scale.

Preferably, the fixing device is a sleeve, and the convex lens is embedded at the end part of the sleeve.

Preferably, the sleeve is sleeved, clamped or in threaded connection with the pen body.

Preferably, the both ends of the pen body all are provided with the external screw thread, and telescopic inner wall sets up the internal thread that matches with the external screw thread.

Preferably, the inner wall of the sleeve is provided with a light absorbing layer.

Preferably, the graduated scale is a graduation line arranged on the convex lens.

Preferably, the number of the scale marks is two, and the two scale marks are arranged on the surface of the convex lens in a crossed manner.

Preferably, the outer side of the pen body is sleeved with a medical silica gel sleeve, and the outer side of the silica gel sleeve is provided with anti-slip lines.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model provides a pair of pupil size measuring pen, including a body and a measuring head, the inside of measuring head sets up convex lens, and set up the light source on convex lens's focus, the light that the light source takes place is through convex lens conversion for the parallel light post, after the scale with the scale on the eyes, because convex lens's emergent light is parallel light, consequently, the scale interval can not change after the scale, do not need to control the distance of measuring pen and eyes, can accurately read the size of pupil according to shining at the scale mark on eyes, and simultaneously, the measuring head adopts to dismantle with a body and is connected, consequently, after tearing the measuring head open, the measuring pen can also regard as pupil pen to detect the reaction sensitivity of patient's pupil to light.

Drawings

FIG. 1 is a structural diagram of the measuring pen for measuring pupil;

FIG. 2 is a structural diagram of the pen body of the present invention;

FIG. 3 is a schematic diagram of a measuring head according to the present invention;

fig. 4 is a schematic diagram of the scale lines of the measuring head of the present invention;

fig. 5 is a schematic diagram of the position of the measuring head of the present invention in an idle state.

In the figure: 1. a pen body; 2. a measuring head; 3. a convex lens; 4. a sleeve; 5. a light source; 6. and a power switch.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.

Referring to fig. 1-5, a pupil size measuring pen includes a pen body 1 and a measuring head 2, wherein one end of the pen body 1 is provided with a light source 5, and the measuring head 2 is detachably disposed at the end of the pen body;

measuring head 2 includes convex lens 3, scale and is used for installing the fixing device on the body of a pen with convex lens, and when measuring pupil size, the measuring head is installed on light path of light source 5 to convex lens's focus is coaxial with the light source, and convex lens's emergent light shines on the pupil through the scale.

This pupil size measuring pen is provided with convex lens through the light path at the light source, and set up the light source on convex lens's focus, the light that the light source takes place passes through convex lens and converts into parallel light post, on will scale eyes after the scale, because convex lens's emergent light is parallel light, consequently, scale interval can not change after the scale, need not control measuring pen and eyes's distance, can accurately read the size of pupil according to the scale mark of shining on eyes, and simultaneously, the measuring head adopts to dismantle with the body of a brush and is connected, consequently after tearing the measuring head down, the measuring pen can also detect the reaction sensitivity of patient's pupil to light as pupil pen.

More elaborate, fixing device is sleeve 4, and convex lens inlays the dress at telescopic tip, and telescopic other end is coaxial to be cup jointed on one's body, when needs measure patient pupil size, the sleeve cover is established at the light source end of body 1, and then measures the pupil, when measuring the reaction sensitivity of eyes to light, then establish the other end from the body with the sleeve cover, adopt the connected mode that cup joints, can guarantee that the light source is coaxial with convex lens's focus, improve measurement accuracy, set up the both ends at the body with the measuring head simultaneously, make the measuring head become whole with the body, avoid losing of measuring head.

The sleeve and the pen body are connected through threads, external threads are arranged at two ends of the pen body 1, and internal threads matched with the external threads are arranged inside the sleeve.

The sleeve 4 and the pen body can be connected or clamped in a transition fit mode.

The sleeve is made of light-tight materials, and a light absorption layer is arranged on the inner wall of the sleeve.

The scale is the scale mark of setting on convex lens, and two scale marks are criss-cross setting on convex lens's surface.

In another embodiment, a measuring plate is arranged on the emergent light path of the convex lens 3, the measuring plate is arranged at the end of the sleeve, the scale marks are etched on the measuring plate to form a through scale groove, and the light passes through the scale groove to form the scale marks on the pupil.

The inside of pen body is provided with the battery for provide the electric energy for the light source, establishes switch on the lateral wall of pen body, and the outside cover of pen body 1 is equipped with medical silica gel cover to be equipped with anti-skidding line in the outside of silica gel cover.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. The pupil size measuring pen is characterized by comprising a pen body (1) and a measuring head (2), wherein a light source (5) is arranged at one end of the pen body (1), and the measuring head (2) is detachably arranged at the end part of the pen body;

measuring head (2) include convex lens (3), scale and be used for installing convex lens fixing device on the body of a pen, and when measuring pupil size, the measuring head is installed on the light path of light source (5) to convex lens's focus is coaxial with the light source, and convex lens's emergent light shines on the pupil through the scale.

2. The pupil size measuring pen according to claim 1, wherein the fixing device is a sleeve (4), and the convex lens is embedded in the end of the sleeve.

3. The pupil size measuring pen of claim 2, wherein the sleeve is sleeved, clamped or screwed with the pen body.

4. The pupil size measuring pen as claimed in claim 2, wherein both ends of the pen body (1) are provided with external threads, and the inner wall of the sleeve is provided with internal threads matched with the external threads.

5. The pupil size measuring pen of claim 2, wherein the inner wall of the sleeve is provided with a light absorbing layer.

6. The pupil size measuring pen of claim 1, wherein the graduated scale is a graduation mark provided on the convex lens.

7. The pupil size measuring pen of claim 6, wherein the two graduation marks are arranged on the surface of the convex lens in a criss-cross manner.

8. The pupil size measuring pen according to claim 1, wherein a medical silica gel sleeve is sleeved outside the pen body (1), and anti-slip lines are arranged outside the silica gel sleeve.