CN209186785U - A kind of eye speculum of one-hand operation - Google Patents
A kind of eye speculum of one-hand operation Download PDFInfo
- Publication number
- CN209186785U CN209186785U CN201721623017.8U CN201721623017U CN209186785U CN 209186785 U CN209186785 U CN 209186785U CN 201721623017 U CN201721623017 U CN 201721623017U CN 209186785 U CN209186785 U CN 209186785U
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- China
- Prior art keywords
- distance rod
- clamp arm
- support frame
- latch gear
- eye speculum
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- Materials For Medical Uses (AREA)
Abstract
The utility model discloses a kind of eye speculums of one-hand operation, including support frame, one end of clamp arm and support frame are rotatablely connected, the other end of clamp arm is fixedly connected with the connecting rod, clamp arm is symmetricly set on the both ends of support frame, the cantilever end of connecting rod is fixedly connected with hook portion, latch gear is fixedly connected in the middle part of support frame, latch gear is located at the side on support frame far from clamp arm, clamping device is rotatably connected on latch gear, the middle part of latch gear and support frame is run through by distance rod, distance rod is rotatablely connected with clamp arm towards one end of clamp arm by the first transmission rod respectively, the other end of distance rod is rotatablely connected by the second transmission rod and clamping device, latch gear is used for the sliding of limit thrust bar.By the way that eye speculum to be configured similarly to the structure of scissors, the technical issues of can realizing the opening of eye speculum by singlehanded and close up, and then realize one-handed performance, overcome the eye speculum that tradition needs both hands to operate.
Description
Technical field
The utility model relates to operated eye instrument field, in particular to a kind of eye speculum of one-hand operation.
Background technique
Eye speculum is hospital ophthalmology Special medical equipment, it is for expanding eyelid (eyes above and below two when eyelid
Block tissue), for majority for making ophthalmologic operation, effect is the surgical field of view for expanding doctor.General eye speculum is screw turn-knob
Eye speculum, operating method are: catching on eyelid with the hook portion of eye speculum, then precession screw rod, eyelid bar (i.e. the application is opened at both ends
Clamp arm) outside diffusion, eyelid expanded.It follows that both hands is needed to operate when traditional eye speculum, i.e., a hand needs
Eye speculum is held, to stablize its position, another hand needs rotary screw, and to expand eyelid, operation is to main operation in this way
For hand, it appears it is rather troublesome, especially in doing ophthalmologic operation, general operating doctor when not needing secondary manipulator and helping,
In order to expand surgical field of view, temporary adandonment of having to is ongoing to be operated to operate eye speculum, and this operation midway is suspended
The case where be easy to cause operation contingency, be unfavorable for that operating doctor is smooth to perform the operation, and when secondary manipulator operates out eyelid
When device, since the position of eye is narrow, space is limited, and double operated to eye undoubtedly increases operating difficulty, is also easy
Accident surgery is caused, there are inconvenient problems with use therefore, it is necessary to traditional eye speculum of both hands operation.
Meanwhile in doing opthalmic surgery, for eyes under the irradiation of high poly- lamp, eye is easily dry and causes patient's eye
Portion is uncomfortable, and then causes postoperative complication, even if eyes can lose most of consciousness in the case where anaesthetic, but eye
Drying can stimulate patient is subconscious to blink, and be unfavorable for the progress of operation, and after finding eye dryness, eye drip is carried out to it
When medicine moistens, since eye speculum does not set the structure of installation drop medicine device, the help for seeking secondary manipulator of having to causes
Eye speculum function is excessively single.
In addition, the hook portion of eye speculum is often with stainless steel and TPU(thermoplastic polyurethane rubber) material is made, and due to stainless
Steel rigidity is too big, easily causes to damage to eyeball and eyelid when in use, therefore, current trend using softer TPU material come
As hook portion, still, since thermoplastic polyurethane rubber poor air permeability, bending strength are low, when being contacted with eyelid, clamp arm
The variation of opening force degree is excessive, then be easy to cause hook portion deformation too big and be detached from eyelid, in prolonged surgical procedure, have quite
The eyelid position of the patient of a part can redness sweat, and then eye is caused to stimulate, be obviously unfavorable for operation it is smooth into
Row.
Utility model content
The goal of the invention of the utility model is: in view of the above problems, provide a kind of one-hand operation opens eyelid
Device can realize the opening of eye speculum by singlehanded and close up by the way that eye speculum to be configured similarly to the structure of scissors, into
And the technical issues of realizing one-handed performance, overcoming the eye speculum that tradition needs both hands to operate, meanwhile, there is similar scissor construction
Eye speculum can also adjusting eyelid at any time expansion size, and then freely adjust the elasticity that eyelid expands as needed,
To adapt to the requirement that each stage of operated eye expands degree to eyelid, that more conducively performs the operation is gone on smoothly.
The technical solution adopted in the utility model is as follows: a kind of eye speculum of one-hand operation, including support frame, clamping dress
It sets and clamp arm, which is characterized in that one end of clamp arm and support frame are rotatablely connected, and the other end of clamp arm is fixedly connected with the connecting rod,
Clamp arm is symmetricly set on the both ends of support frame, and the cantilever end of connecting rod is fixedly connected with hook portion, is fixedly connected in the middle part of support frame
Latch gear, latch gear are located at the side on support frame far from clamp arm, and clamping device is rotatably connected on latch gear, lock pin
The middle part of mechanism and support frame is run through by distance rod, and distance rod is turned with clamp arm towards one end of clamp arm by the first transmission rod respectively
The other end of dynamic connection, distance rod is rotatablely connected by the second transmission rod and clamping device, and distance rod can be in latch gear
Sliding, latch gear are used for the sliding of limit thrust bar.
Further, clamping device includes the hand-held arm for being symmetrically disposed on distance rod two sides, holds arm and distance rod rotation connects
Connect, when hand-held arm drawn close to the center line of distance rod or far from when, distance rod to it is separate or draw close support frame direction it is mobile, into
And draw close clamp arm with the movement of distance rod to the center line of distance rod or separate.
Further, latch gear includes outer sleeve and inner sleeve, and one end of outer sleeve is fixedly connected on the support frame, another
One end and clamping device are rotatablely connected；Inner sleeve and outer sleeve are rotatablely connected, and distance rod is placed in inner sleeve, the inner wall of inner sleeve
Groove equipped with the distribution of helically line, distance rod is equipped with the slide bumping cooperated with groove type face, when distance rod is along its axis
When direction is mobile, inner sleeve rotates relative to distance rod.
Further, bolt is installed, bolt is used to limit the rotation of inner sleeve on outer sleeve.
Further, the wall thickness of outer sleeve is greater than the wall thickness of inner sleeve.
Further, the spacing between outer sleeve and inner sleeve is not less than 1mm.
Further, inner sleeve outer surface coat one layer of polytetrafluoroethylene ethylene layer, polytetrafluoroethylene ethylene layer with a thickness of 150-300
μm。
Further, hook portion is made of thermoplastic polyurethane rubber, uniformly distributed multiple air holes in hook portion.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model provides
A kind of one-hand operation eye speculum, by the way that eye speculum to be configured similarly to the structure of scissors, can by one hand come reality
Show the opening of eye speculum and close up, and then realize one-handed performance, the technology for overcoming the eye speculum that tradition needs both hands to operate is asked
Topic, meanwhile, have similar scissor construction eye speculum can also adjusting eyelid at any time expansion size, and then as needed from
The elasticity expanded by adjusting eyelid, to adapt to the requirement that each stage of operated eye expands degree to eyelid, more conducively
Operation is gone on smoothly.
Detailed description of the invention
Fig. 1 is a kind of eye speculum three dimensional structure diagram of the utility model；
Fig. 2 is the eye speculum schematic view of the front view of the utility model；
Fig. 3 is the partial enlarged view of part A in Fig. 2；
Fig. 4 is the hook portion deployed configuration partial schematic diagram of the utility model；
Fig. 5 is the latch gear schematic cross-sectional view of the utility model.
Appended drawing reference: 1 is support frame, and 2 be clamping device, and 201 be hand-held arm, and 3 be clamp arm, and 301 be propulsive liquid portion, and 4 be company
Extension bar, 5 be hook portion, and 501 be air hole, and 502 be drainage trough, and 6 be latch gear, and 601 be outer sleeve, and 602 be inner sleeve, 603
It is groove for ball, 604,7 be distance rod, and 701 be slide bumping, and 8 be the first transmission rod, and 9 be the second transmission rod, and 10 be slotting
Pin, 11 be drainage tube.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figures 1 to 5, a kind of eye speculum, including support frame 1, clamping device 2 and clamp arm 3, one end of clamp arm 3 with
Support frame 1 is rotatablely connected, and the other end of clamp arm 3 is fixedly connected with connecting rod 4, and clamp arm 3 is symmetricly set on the both ends of support frame 1.
The cantilever end of connecting rod 4 is fixedly connected with hook portion 5, and the middle part of support frame 1 is fixedly connected with latch gear 6, and latch gear 6 is located at branch
Far from the side of clamp arm 3 on support 1, clamping device 2 is rotatably connected on latch gear 6, and the middle part of latch gear 6 is by distance rod
7 run through, and distance rod 7 runs through the middle part of support frame 1 simultaneously, and distance rod 7 is distinguished towards one end of clamp arm 3 by the first transmission rod 8
It is rotatablely connected with clamp arm 3, the other end of distance rod 7 is rotatablely connected by the second transmission rod 9 with clamping device 2, and distance rod 7 can
It is slided in latch gear 6, latch gear 6 is used for the sliding of limit thrust bar 7.Clamping device 2 includes being symmetrically disposed on thrust
The hand-held arm 201 of 7 two sides of bar holds arm 201 and is rotatablely connected with distance rod 7, when hand-held arm 201 is leaned on to the center line of distance rod 7
When holding together, holds arm 201 and drive distance rod 7 to the direction movement far from support frame 1 by the second transmission rod 9, and then make distance rod 7
The first transmission rod 8 is pulled, and drives clamp arm 3 also to draw close to the center line of distance rod 7 by the first stayed mast 8, is achieved in folder
The closing action of arm 3；Correspondingly, it when hand-held center line of the arm 201 far from distance rod 7 is mobile, holds arm 201 and is passed by second
It is mobile to the direction close to support frame 1 that power bar 9 drives distance rod 7, and then distance rod 7 is made to pull the first transmission rod 8, and passes through the
One stayed mast 8 drives clamp arm 3 also separate to the center line of distance rod 7, is achieved in the opening action of clamp arm 3.Latch gear 6 can
To fix distance rod 7 by bolt.Relative to it is traditional screw rod come by way of realizing the opening of eye speculum and closing up,
The eye speculum of the utility model can realize one-handed performance, can adjust at any time the opening-closing size of eyelid device, at the same can be realized with
When fix, facilitate the operation of operated eye, sense of discomfort caused by eyes of patients significantly reduced, patient is acceptable to spend,
Conducive to going on smoothly for surgical procedure.
Further, latch gear 6 includes outer sleeve 601 and inner sleeve 602, as shown in figure 5, one end of outer sleeve 601
It is fixedly connected on support frame 1, the other end and clamping device 2 are rotatablely connected；Inner sleeve 602 passes through ball 603 and outer sleeve 601
Rotation connection, distance rod 7 are placed in the inside of inner sleeve 602, and the inner wall of inner sleeve 602 is equipped with the groove 604 of helically line distribution,
Distance rod 7 is equipped with the slide bumping 701 cooperated with 604 shape face of groove, and slide bumping 701 can be free to slide in groove 604,
When distance rod 7 is moved along its axis direction, inner sleeve 602 is rotated relative to distance rod 7 (turns original similar to rotary mop
Reason), as long as at this point, on outer sleeve 601 be arranged bolt 10, the rotation of inner sleeve 602 is limited by bolt 10, can be realized
The movement of limit thrust bar 7, and then achieve the purpose that fixed distance rod 7, fix the open angle of eye speculum, without logical
That receives and distributes exerts oneself to be maintained open angle, saves the physical demands of user, eye speculum using more stable.
Further, in order to make distance rod 7 not shift in moving process, and keep the structure of latch gear 6 more steady
Fixed secured, the wall thickness of outer sleeve 601 is greater than the wall thickness of inner sleeve 602.Correspondingly, it in order to move distance rod 7 preferably, reduces
Resistance suffered by it in order to eye speculum smooth opening or closes up, and the spacing between outer sleeve 601 and inner sleeve 602 is not less than
1mm。
Further, in order to reduce the resistance that inner sleeve 602 rotates, the outer surface of inner sleeve 602 coats a strata tetrafluoro
Pvdf layer (is not drawn into) in figure, polytetrafluoroethylene ethylene layer with a thickness of 150-300 μm, preferably 230 μm.
Further, since the general operated eye time is longer, to prevent because of eye dryness caused by patient it is uncomfortable, hook portion 5
It is made first of thermoplastic polyurethane rubber, as shown in Figure 3 and Figure 4, uniformly distributed multiple air holes 501 in hook portion 5 open eyelid to improve
Comfort level of the device when widening the view eyelid.The surface of hook portion 5 is equipped with criss-cross drainage trough 502, and hook portion 5 is by drainage tube 11 and even
Extension bar 4 is fixedly connected, and eyedrops is full of in drainage tube 11, conveys eyedrops to hook portion by drainage tube 11, hook portion 5 passes through drainage
Slot 502 substantially distributes everywhither, and then soaks to eyelid, and extra eyedrops then flows into intraocularly with eyelid, and then plays
The effect of moistening eye, solves the problems, such as eye dryness.
Further, in order to preferably soak to eyelid, the place for contacting hook portion 5 with eyelid can be wetted,
Air hole 501 is arranged on drainage trough 502, as shown in Figure 4.The surface of hook portion 5 covers one layer of spongy layer (being not drawn into figure), leads to
The eyedrops that the space cavernous structure of sponge is crossed flow out drainage tube 11 is more evenly distributed, and then contacts hook portion 5 with eyelid
Place can be wetted, the problem of improving wetting effect, better solved eye dryness.
Further, in order to which the drainage tube 11 for preferably making the utility model exports eyedrops, connecting rod 4 and clamp arm 3 are equal
With hollow inner cavity, and the end that connect with clamp arm 3 of connecting rod 4 is protruded into clamp arm 3 and is fixedly connected, and clamp arm 3 is hollow
Inner cavity and the hollow cavity of connecting rod 4 are mutually communicated, and propulsive liquid portion 301 and liquid injection port (being not drawn into figure) are provided in clamp arm 3, is pushed away
Liquid portion 301 includes the push-pads that the pushing block outside clamp arm 3 is arranged in and is slidably connected inside clamp arm 3, and pushing block and push-pads are solid
Fixed connection, propulsive liquid portion 301 can be free to slide in clamp arm 3.The shape of push-pads and the hollow cavity cross-sectional shape of clamp arm 3
Matching, eyedrops is entered by liquid injection port in the hollow cavity of clamp arm 3, due in actual use, connecting rod 4 and clamp arm 3
Diameter is smaller, and the diameter of clamp arm 3 is generally 2-4mm, and the diameter of connecting rod 4 is generally 1-2mm, therefore, in uninflated feelings
Under condition, the eyedrops being placed in clamp arm 3 and connecting rod 4 will not be flowed outwardly voluntarily by drainage tube 11, therefore, propulsive liquid portion 301
Effect be exactly to realize pressurization using the push-pads in propulsive liquid portion 301, so that drainage tube 11 is flowed out eyedrops, so reach with
Take with effect, convenient for user in the course of surgery be more convenient operation, improve the adaptability of eye speculum, enrich out eyelid
The function of device.
In view of traditional thermoplastic polyurethane rubber since biocompatibility is poor, easily allergy is caused to infect in eyelid,
Bending strength is lower, is not easy to open eyelid position, effectively to overcome hard thermoplastic polyurethane rubber to cause eye illness and bending strength
Lower easily-deformable problem, the thermoplastic polyurethane rubber are made up of the component of following parts by weight: 80 parts of TPU resin, titanium
18-26 parts of white powder, 7-9 parts of wax powder, 3-5 parts of silica, 2-5 parts of glass fibre, 1-3 parts of zinc stearate, silane coupling agent 1-3
Part, 1-3 parts of antioxidant, 0.5-1 parts of levelling agent, 0.5-1 parts of dispersing agent.The granularity of titanium dioxide is 300-400 mesh, wax powder and two
The granularity of silica is 100-200 mesh, and the average filament diameter of glass fibre is 100-150 μm, draw ratio 40-50:1, excellent
It is selected as 43:1；Antioxidant is preferably antioxidant 168, and levelling agent is preferably organic-silicon-modified polysiloxanes, and dispersing agent is preferred
For BYK-ATU dispersing agent.
Among the above, titanium dioxide and glass fibre need modification when in use, to increase its compatibility, make to eventually form
Thermoplastic polyurethane rubber comprehensive mechanical property it is preferable, improve its durability.Specifically, the modification of titanium dioxide
Concrete operations include: with silane coupling agent at 100 DEG C, be modified processing in deionized water, react 6-8h；Glass
The concrete operations of the modification of fiber include: with silane coupling agent at 80 DEG C, be modified processing in deionized water, instead
Answer 10h.
In order to better implement the thermoplastic polyurethane rubber of the utility model, the preparation method of thermoplastic polyurethane rubber
The following steps are included:
Step 1, will TPU resin, wax powder, silica and dispersing agent be added reactor in, then with blender with
The revolving speed of 800rad/min, which is stirred, to be uniformly dispersed, and obtains base-material；
Glass fibre and titanium dioxide are added in coupling reaction tank by step 2, under the mixing speed of 800rad/min in
It is uniformly mixed in 80 DEG C, while agitating, silane coupling agent is sprayed directly in mixture, made after keeping the temperature 20min
Obtain mixture；
Base-material, mixture, antioxidant, levelling agent and zinc stearate are uniformly mixed by step 3 in blender, then
And it send be kneaded 8h into mixer together；
Step 4 after being kneaded, allows its coagulation forming, obtains sizing material, post-process to sizing material.
Further, in step 4, post-processing specifically includes: carrying out slicing treatment, the size and thickness of slice to sizing material
Depending on the design size of hook portion, the then high-temperature process 30min at 80 DEG C obtains hook portion after cooling and shaping.
In order to which the thermoplastic polyurethane rubber of the utility model is better described, it is exemplified below specific embodiment, such as 1 institute of table
Show:
The specific formula (in parts by weight) of 1 embodiment 1-8 of table
Main performance test
1, Mechanics Performance Testing: using universal testing machine test tensile strength and bending strength, (testing standard is distinguished
It is tested using ISO 527 and ISO 178)；
2, ageing resistance is tested: it is aging for a week in artificial accelerated aging case, then survey the decline percentage of its performance.
The results are shown in Table 2:
The Specifeca tion speeification of 2 embodiment 1-7 of table
As shown in Table 2, the tensile strength of the thermoplastic polyurethane rubber of the utility model reaches 29MPa, and bending strength reaches
To 14.3MPa, ageing resistance is not higher than 9%, has good comprehensive mechanical property, bending strength (one especially with higher
As thermoplastic polyurethane rubber bending strength less than 7MPa), can satisfy requirement of the hook portion to material property, overcome tradition
Thermoplastic polyurethane rubber bending strength is lower, is not easy the problem of opening eyelid position.
In the above-described embodiments, when being applied to hook portion obtained to do operated eye, also there is not an example because of hook portion material at present
The case where material causes allergic reaction, cause may be that the thermoplastic polyurethane rubber of the utility model has used content less
Chemical reagent and have more supervirulent chemical raw material, increased significantly the content of inorganic hypotoxicity filler, especially titanium dioxide
Content, and then guarantee thermoplastic polyurethane rubber have good comprehensive performance under conditions of, chemical examination has been greatly reduced
Agent and industrial chemicals are stimulated caused by skin, hence it is evident that are reduced allergic reaction caused by thermoplastic polyurethane rubber, thus said
The thermoplastic polyurethane rubber of bright the utility model can be contacted directly with human body weak part, hardly cause allergy anti-
It answers, solves the problems, such as that conventional thermoplastic's polyurethane rubber can cause cutaneous anaphylaxis.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of eye speculum of one-hand operation, including support frame, clamping device and clamp arm, which is characterized in that one end of clamp arm
It is rotatablely connected with support frame, the other end of clamp arm is fixedly connected with the connecting rod, and clamp arm is symmetricly set on the both ends of support frame, connection
The cantilever end of bar is fixedly connected with hook portion, and latch gear is fixedly connected in the middle part of support frame, and latch gear is located on support frame far
Side from clamp arm, clamping device are rotatably connected on latch gear, and the middle part of latch gear and support frame is run through by distance rod,
Distance rod is rotatablely connected with clamp arm towards one end of clamp arm by the first transmission rod respectively, and the other end of distance rod is passed by second
Power bar and clamping device are rotatablely connected, and distance rod can slide in latch gear, and latch gear is used for the cunning of limit thrust bar
It is dynamic.
2. the eye speculum of one-hand operation as described in claim 1, which is characterized in that clamping device includes being symmetrically disposed on to push away
The hand-held arm of power bar two sides, holds arm and distance rod is rotatablely connected, when hand-held arm is drawn close to the center line of distance rod or is separate,
Distance rod to it is separate or draw close support frame direction it is mobile, and then make clamp arm with the movement of distance rod and to the center of distance rod
Line is drawn close or separate.
3. the eye speculum of one-hand operation as described in claim 1, which is characterized in that latch gear includes outer sleeve and inner sleeve
Cylinder, one end of outer sleeve are fixedly connected on the support frame, and the other end and clamping device are rotatablely connected；Inner sleeve and outer sleeve turn
Dynamic connection, distance rod are placed in inner sleeve, and the inner wall of inner sleeve is equipped with the groove of helically line distribution, distance rod be equipped with it is recessed
The slide bumping of corrugated surface cooperation, when distance rod is moved along its axis direction, inner sleeve rotates relative to distance rod.
4. the eye speculum of one-hand operation as claimed in claim 3, which is characterized in that be equipped with bolt, bolt on outer sleeve
For limiting the rotation of inner sleeve.
5. the eye speculum of one-hand operation as claimed in claim 3, which is characterized in that the wall thickness of outer sleeve is greater than inner sleeve
Wall thickness.
6. the eye speculum of one-hand operation as claimed in claim 3, which is characterized in that the spacing between outer sleeve and inner sleeve
Not less than 1mm.
7. the eye speculum of one-hand operation as claimed in claim 3, which is characterized in that the outer surface of inner sleeve coats a strata
Tetrafluoroethene layer, polytetrafluoroethylene ethylene layer with a thickness of 150-300 μm.
8. the eye speculum of one-hand operation as described in claim 1, which is characterized in that hook portion thermoplastic polyurethane rubber system
At uniformly distributed multiple air holes in hook portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721623017.8U CN209186785U (en) | 2017-11-29 | 2017-11-29 | A kind of eye speculum of one-hand operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721623017.8U CN209186785U (en) | 2017-11-29 | 2017-11-29 | A kind of eye speculum of one-hand operation |
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| Publication Number | Publication Date |
|---|---|
| CN209186785U true CN209186785U (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721623017.8U Expired - Fee Related CN209186785U (en) | 2017-11-29 | 2017-11-29 | A kind of eye speculum of one-hand operation |
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| Country | Link |
|---|---|
| CN (1) | CN209186785U (en) |
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2017
- 2017-11-29 CN CN201721623017.8U patent/CN209186785U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190802 |