CN211723120U - Pupil pen - Google Patents

Abstract

The utility model relates to a pupil pen, including the pen-holder, locate light ring adjustment mechanism and parallel light source in the pen-holder, grafting eye support piece can be dismantled to the front end of pen-holder, eye support piece includes the grafting cover of tube-shape and connects two upper and lower elastic silica gel plectrums at the grafting cover front end, two elastic silica gel plectrums are cambered surface form plectrum and concave part just to setting up, the front end of elastic silica gel plectrum has the plate-shaped lip edge of backward indent, it seals and rear end open-ended groove of ending to have at least one front end that extends along axial direction on the inner wall of grafting cover, the front end of pen-holder sets up the sand grip of ending along the axial direction extension. The utility model has the advantages that: when the eye-supporting device is used, the eyelids and the plate-shaped lip edge are opened together along the shape of the eyeball under the thrust action to expose the pupil, so that the next measurement operation is convenient, after the measurement, when the next measurement object is measured, the new eye supporting piece is replaced, the cross infection of a patient caused by eye bacteria is prevented, and meanwhile, the cost is low.

Description

Pupil pen

Technical Field

The utility model relates to a pupil pen for observing the size of a pupil.

Background

The size of the pupil plays an important role in the disease condition judgment, and doctors consider the pupil as a sensitive indicator of the vital function and also a main index in the disease condition observation, so that the size of the pupil needs to be objectively recorded.

The invention patent with publication number CN 108836258A discloses a pupil pen capable of measuring conveniently, which comprises a plurality of blades arranged in a pen holder, a rotary disc, a parallel light source, a stepping motor, a motor switch, a display and a controller, wherein the blades can rotate to form different-sized apertures, the rotary disc is provided with a groove, the blades are provided with limit blocks sliding in the groove, the rotary disc is rotated to enable the limit blocks sliding in the groove to drive the blades to rotate to form different-sized apertures, the stepping motor is used for driving the rotary disc to rotate, the motor switch is used for controlling the stepping motor to rotate, the parallel light source, the stepping motor, the motor switch and the display are respectively connected with the controller, aperture adjustment belongs to the prior art and is consistent with the principle of manually adjusting apertures of a camera, the structure is only that the manually rotating rotary disc to adjust the apertures is changed into the step motor to drive the apertures, and particularly, the turntable is provided with a driving ring with an internal gear, and the internal gear is meshed with a gear arranged on an output shaft of the stepping motor. When the device is used, the stepping motor is controlled to act through the switch, so that the diaphragm is driven to contract, when the irradiation range is consistent with the through hole area, the size of the through hole is calculated through the controller, and the device is convenient to use.

However, in reality, the scheme has two problems, the first is that in use, the eyes of a patient need to be pulled away by hands, when the resistance of some patients is reduced, the eyes are easy to be infected, and the eyes of different patients are pulled away by hands, so that cross infection is easy to cause, and the second is that due to the existence of the controller, the stepping motor and the display, the manufacturing cost of the pupil pen is too high, so that the pupil pen is not beneficial to popularization and use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pupil pen to solve the pupil pen among the prior art and frequently fill the problem of gassing troublesome poeration because of needs.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

a pupil pen comprises a pen holder, an aperture adjusting mechanism and a parallel light source, wherein the aperture adjusting mechanism is arranged in the pen holder and comprises a plurality of aperture adjusting blades and a rotary table, a driving ring with an internal gear is arranged on the rotary table, the front end of the pen holder is detachably inserted with the eye supporting piece, the eye supporting piece comprises a cylindrical insertion sleeve and an upper elastic silica gel shifting piece and a lower elastic silica gel shifting piece which are connected with the front end of the insertion sleeve, the two elastic silica gel shifting pieces are arc-shaped shifting pieces, the concave parts of the two elastic silica gel shifting pieces are arranged right, the front end of each elastic silica gel shifting piece is provided with a plate-shaped lip edge which is inwards concave backwards, the rear end of the elastic silica gel shifting sheet is fixed on the plug-in sleeve, the distance between the two plate-shaped lips is 2-5mm, the inner wall of the plug-in sleeve is provided with at least one rotation stopping groove which extends along the axial direction and is provided with a closed front end and an open rear end, the front end of the pen holder is provided with a rotation stopping convex strip extending along the axial direction, and the rotation stopping groove and the rotation stopping convex strip are arranged in a matched insertion mode when the insertion sleeve is inserted at the front end of the pen holder.

Preferably, the pivot fixing base that extends along axial direction has on the pen-holder inner wall, has the pivot fixed orifices that extends along axial direction on the pivot fixing base, and the pivot is established in the well interpolation in the fixed orifices, all sets up the baffle that prevents the pivot drunkenness around in the fixed orifices in the pivot at pivot fixing base both ends, the front end of pivot have with the internal gear meshing's of drive circle first gear, the lower extreme of pivot has the second gear, still has the rectangular hole on the pen-holder lateral wall, the rectangular hole internal rotation sets up the drive gear that extends along axial direction, drive gear with the meshing cooperation of second gear, every teeth of a cogwheel all is equipped with the index mark on the drive gear.

Preferably, there are two rotation stopping grooves, there are two corresponding rotation stopping convex strips, and a gap formed by the two plate-shaped lips is parallel to the rectangular hole.

Preferably, the parallel light source comprises a light source fixing barrel and an LED lamp arranged at the rear end of the light source fixing barrel, and the LED lamp is connected with the power supply through a wire and a switch.

The utility model has the advantages that: the utility model provides a pupil pen, when using, peg graft eye support piece at the pen-holder front end, then let the observation object close eyes, avoid nervous in the heart, two platelike lips of support piece are along supporting the upper and lower eyelid of eyes after that, the pen-holder continues to press forward, platelike lip along roof pressure eyelid, the eyelid is under thrust effect with platelike lip along eyeball shape together and is strutted, expose the pupil, make things convenient for measuring operation on next step, because upper and lower two elasticity silica gel plectrums are strutted, so do not influence the observation, after measuring, pull out eye support piece, when measuring next measurement object, more renew eye support piece, and is very practical, the elasticity silica gel plectrum of silica gel material can be repeated practicality after the disinfection, prevent that patient from appearing cross infection because of eye bacterium, and low cost simultaneously.

Further, set up the pivot fixing base, set up the second gear at the pivot lower extreme, rotate on the pen-holder lateral wall and set up the drive gear with second gear meshing, in the time of the use, only need to rotate drive gear, it rotates to drive the drive collar through the pivot, thereby control the size of light ring, before the product batch production, drive gear is every to rotate a teeth of a cogwheel, the accessible is measured and is reachd the light ring size, after establishing the corresponding relation, the accessible sets up the scale line that has different colours on every teeth of a cogwheel and refers to different light ring sizes, can learn the size of surveying the pupil through observing the scale line on the drive gear, high convenience in use, the controller has been saved, step motor, parts such as pressure sensor, the cost greatly reduced of this pupil pen of being.

Furthermore, the rotation stopping grooves are two, the corresponding rotation stopping protruding strips are two, so that the plug-in connection is more stable, and the gap formed by the two plate-shaped lips and the rectangular hole are arranged in parallel, so that the driving gear is convenient to observe and operate.

Drawings

FIG. 1 is a schematic structural view of a pupil pen of the present invention;

FIG. 2 is a schematic view of the eye support of the present invention;

FIG. 3 is a schematic view of the inner part of the pupil pen of the present invention;

FIG. 4 is an enlarged view at A in FIG. 3;

fig. 5 is a schematic view of the matching structure of the middle rotary table and the first gear of the present invention.

Detailed Description

The embodiment of the pupil pen of the utility model is shown in figures 1-5, comprising a pen holder 1, an aperture adjusting mechanism and a parallel light source arranged in the pen holder, wherein the pen holder 1 is a tubular structure, the aperture adjusting mechanism comprises a plurality of aperture adjusting blades 17 and a rotary table, the specific structure of the aperture adjusting mechanism and the fixing mode in the pen holder are the prior art, the invention patent with the publication number of CN 108836258A discloses a pupil pen convenient for measurement, which is specifically described, basically consistent with the existing camera aperture adjusting mechanism, the difference is that a rotating part, namely the rotary table, rotates in the pen holder, other fixing parts are fixed on the inner wall of the pen holder by bonding, only the parts related to the technical problem solved by the scheme are described in detail, other parts are not repeated, in the embodiment, the inner wall of the pen holder is provided with an annular chute 21, the rotary table comprises a driving ring 18 and a collar 10 integrally arranged in the circumferential direction of the periphery of the driving, the retainer ring is rotationally clamped in the annular sliding groove 21, the inner wall of the driving ring is provided with a ring of inner gears 19, the front end of the pen holder can be detachably inserted with the eye supporting piece 2, the eye supporting piece comprises a cylindrical inserting sleeve 201 made of silica gel and an upper elastic silica gel shifting piece 202 and a lower elastic silica gel shifting piece 202 which are integrally connected with the front end of the inserting sleeve, the two elastic silica gel shifting pieces are arc-shaped shifting pieces, and concave parts are arranged right opposite to each other, the middle parts of the elastic silica gel shifting pieces are provided with certain strength, so that the rear end parts of the elastic silica gel shifting pieces are mainly bent in the expanding process of the elastic silica gel shifting pieces, but the middle parts of the elastic silica gel shifting pieces are bent inwards, the expanding space is wider and convenient to observe, the front end of each elastic silica gel shifting piece is provided with a plate-shaped lip edge 204 which is inwards concave backwards, the plate-shaped lip edge is a rectangular plate-shaped silica gel, the eyelid convenient to laminate, the reason that sets up platelike lip edge 204 is, the edge of the evagination of elasticity silica gel plectrum front end is unfavorable for the laminating of eye, if vertical cutting cuts off partly, form the arc limit of epirelief again, still can't laminate the eyelid, the perfect problem of laminating the eyelid of having solved of platelike lip edge 204 is put to integrative setting, the rear end of elasticity silica gel plectrum is fixed on the grafting cover, fixed mode sets up as an organic whole, two platelike lip edges are 2-5mm apart, it seals just rear end open-ended groove 203 to have at least one front end that extends along the axial direction on the inner wall of grafting cover, set up two in this embodiment, the integrative rotation-stopping sand grip 20 that extends along the axial direction that sets up in the front end of pen-holder, rotation-stopping groove 203 and rotation-stopping sand grip 20 grafting cooperation setting when the grafting cover is pegged graft.

When in use, the eye supporting piece is inserted at the front end of the pen holder, then the observation object closes the eyes to avoid tension in mind, then the two plate-shaped lips of the supporting piece are abutted against the upper eyelid and the lower eyelid of the eyes, the pen holder is continuously pressed forwards, the plate-shaped lips are abutted against the eyelids, the eyelids are propped open along the shape of the eyeball together with the plate-shaped lips under the action of thrust to expose pupils, and the next measurement operation is convenient. The cost is low.

In addition, in this embodiment, a rotating shaft fixing seat 22 extending along the axial direction is integrally arranged on the inner wall of the pen holder, the rotating shaft fixing seat is located behind the driving ring, a rotating shaft fixing hole extending along the axial direction is formed in the rotating shaft fixing seat, a rotating shaft 7 is inserted in the fixing hole, baffles 16 and 16' for preventing the rotating shaft from moving back and forth in the fixing hole are arranged on the rotating shafts at two ends of the rotating shaft fixing seat, the baffles can be realized by bonding a plastic plate on the rotating shafts, a first gear 23 meshed with an internal gear of the driving ring is arranged at the front end of the rotating shaft, a second gear 15 is arranged at the lower end of the rotating shaft, rectangular holes 3 are further formed in the side wall of the pen holder, a driving gear 5 extending along the axial direction is rotatably arranged in the rectangular holes, the driving gear 5 is meshed with the second gear 15, each gear tooth on the driving, is drawn on the end face of the driving gear.

In this embodiment, the groove of only revolving has two, and the sand grip of only revolving that corresponds has two for it is more stable after pegging graft, and two platelike lips are along the gap that forms and rectangular hole 3 parallel arrangement, conveniently observe and operate drive gear 5. The parallel light source comprises a light source fixing barrel 11 fixed in the penholder through a transverse plate 12 in an adhering mode and an LED lamp (not shown in the figure) arranged at the rear end of the light source fixing barrel, the LED lamp can be fixed at the bottom of the fixing barrel through the adhering mode, and the LED lamp is connected with a power supply 14 through a lead 13 and a switch 8 to form a disconnectable lighting loop.

In the embodiment, a rotating shaft fixing seat is arranged, a second gear is arranged at the lower end of the rotating shaft, a driving gear meshed with the second gear is rotatably arranged on the side wall of the pen holder, when the pupil, is beneficial to popularization and application.

Claims (4)

1. The utility model provides a pupil pen, includes the pen-holder, locates light ring adjustment mechanism and parallel light source in the pen-holder, light ring adjustment mechanism includes a plurality of light ring adjusting blade and carousel, is equipped with the drive coil of in-band gear on the carousel, its characterized in that: the eye support piece of pegging graft can be dismantled to the front end of pen-holder, eye support piece includes the grafting cover of tube-shape and connects two upper and lower elastic silica gel plectrums at the grafting cover front end, and two elastic silica gel plectrums are cambered surface form plectrum and concave part just to setting up, and the front end of elastic silica gel plectrum has the plate-shaped lip edge of indent backward, and the rear end of elastic silica gel plectrum is fixed on the grafting cover, two the plate-shaped lip edge is 2-5mm apart from, has at least one front end that extends along axial direction and seals and rear end open-ended groove of spiraling on the inner wall of grafting cover, the front end of pen-holder sets up the only rotation sand grip that extends along axial direction, and only rotation groove and only rotation sand grip cooperation setting when the grafting cover is pegged graft on the.

2. The pupil pen of claim 1, wherein: have the pivot fixing base that extends along axial direction on the pen-holder inner wall, have the pivot fixed orifices that extends along axial direction on the pivot fixing base, insert in the fixed orifices and establish the pivot, all set up the baffle that prevents the pivot drunkenness around in the fixed orifices in the pivot at pivot fixing base both ends, the front end of pivot have with the first gear of the internal gear meshing of drive coil, the lower extreme of pivot has the second gear, still has the rectangular hole on the pen-holder lateral wall, the rectangular hole internal rotation sets up the drive gear that extends along axial direction, drive gear with the cooperation of second gear meshing, every teeth of a cogwheel all is equipped with the index mark on the drive gear.

3. The pupil pen of claim 2, wherein: the rotary stopping grooves are two, the corresponding rotary stopping convex strips are two, and a gap formed by the two plate-shaped lips is parallel to the rectangular hole.

4. The pupil pen of claim 3, wherein: the parallel light source comprises a light source fixing barrel and an LED lamp arranged at the rear end of the light source fixing barrel, and the LED lamp is connected with the power supply through a wire and a switch.

Images