CN208741271U - The reverse microporators of cornea - Google Patents
The reverse microporators of cornea Download PDFInfo
- Publication number
- CN208741271U CN208741271U CN201820437181.8U CN201820437181U CN208741271U CN 208741271 U CN208741271 U CN 208741271U CN 201820437181 U CN201820437181 U CN 201820437181U CN 208741271 U CN208741271 U CN 208741271U
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- Prior art keywords
- extension rod
- cornea
- microporators
- reverse
- handle
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- Prostheses (AREA)
Abstract
The utility model relates to a kind of reverse microporators of cornea, including upper end handle, lower end handle, upper end extension rod, lower end extension rod, adjusting rod, torsionspring, extension rod fixed ring, adjusting rod fixed ring, gasket, the deep axis of control and formed punch.Its advantage is shown: the reverse microporators of the cornea are bonded people's cornea, it can be under the premise of not corneal damage front layer, the muddy part of thin plate layer under direct-view, pointedly after quick ring cutting optical zones of cornea, it is stripped so as to subsequent, visual impairment caused by optics area plant bed is muddy after solution lamellar keratoplasty, and primary lesion recurrence after lamellar keratoplasty is avoided to involve plant piece to a certain extent, improve medical resource utilization rate.
Description
Technical field
The utility model relates to the field of medical instrument technology, specifically, being a kind of reverse microporators of cornea.
Background technique
Keratonosus is one of the main diseases causing blindness in China, and corneal transplantation is as a kind of highest organ shifting of success rate
It plants, is its important treatment and means of recovering lost eyesight.Corneal transplantation is carried out so far, and it is available to have a Multioperation, and traditional
Penetrating Keratoplasty (i.e. with health donor's cornea replace holostrome recipient cornea) compare, lamellar keratoplasty be then
After the pathological tissues for cutting off recipient cornea, the transparent donor plate layer corneal graft of respective thickness is transplanted, is possessed to donor's cornea material
Material requires that relatively low, postoperative complication is few and is not susceptible to the advantages such as rejection；But Postoperative recurrent rate height and Visual outcome
Difference is its main problem.
Plant bed muddiness is shown as recur after lamellar keratoplasty gradually to aggravate more, and gradually involves plant piece, and less serious case influences
Visual quality, severe one affect vision, or even need to re-replace plant piece；The postoperative remaining matrix of plant bed is in the healing with plant piece
Cheng Zhong has different degrees of cicatrization, if scar is located on optical zones of cornea, equally also will affect eyesight.
The cornea of people can be divided into from outside to inside: epithelium layer, bowman's lamina, hypothallus, descemet's membrane, endothelial cell
Layer.Descemet's membrane can regenerate after damage from endothelial cells secrete；Corneal endothelium is a cell monolayer, normal adult angle
The film endothelial layer gross area is about 147mm2, average endothelial cell density is 2700~3000/mm2Left and right.At adult, angle
It cannot be regenerated after film endothelial cell damage, repair and increase by neighbouring endothelial cell, extend and migrate.When corneal endothelium is thin
Born of the same parents' density is lower than 500/mm2Left and right, will occur decompensation, leads to corneal edema, or even bullous keratopathy occur.
Thin plate layer, descemet's membrane and interior after the round cornea that diameter is 2mm are stripped if the transparency for guaranteeing optics area
Skin cell layer, only causes about 2% endothelial cell Loss Rate, and the endothelium much smaller than after ultrasonic emulsification for cataract 10% or more is thin
Born of the same parents' Loss Rate；And it is based on above-mentioned physiological foundation, defective region is after a period of time by self-healing.This can not only effectively improve trouble
Person's Postoperative visual acuity, and will not corneal endothelium cause excessive damage.
Title: the automatic interceptor of cornea；The patent No.: CN203693888 comprising one forms in hollow cylindrical, lower end
The cutter hub of the annular edge of a knife, cutter hub installation is on one end of a pressure handle, and the other end axis connection of pressure handle is in one end of a pedestal, pedestal
The other end on correspond to the position of pressure handle upper knife body and be equipped with one for placing the fixed bit of donor's cornea.It can be pressed by pressing
Handle cuts to fast power-saving appropriately sized donor's cornea.It not can be carried out ring with the difference of the utility model: above-mentioned utility model
The adjustment of cutting depth is only applicable to the holostrome interception of isolated cornea, can not be applied to intercept in the rear thin plate layer of body cornea.
Title: Descemet membrane dilaceration forceps；The patent No.: CN201658459, it includes tweezer handle, and the head end of tweezer handle is equipped with
The bending to raise upward is cranked arm, and the head end cranked arm is equipped with the pointed tweezer head being folded upward at.Suitable for being torn in corneal endothelial trans-plantation
Except entocornea.Distinguish with the utility model: above-mentioned utility model is removed for entocornea and is designed, if directly
For inversely stripping thin plate layer after muddy plant bed after lamellar keratoplasty, do not simply fail to accurately control the depth removed, and
Time and effort consuming be easy to cause and removes face out-of-flatness even muddy the case where aggravating.
But the reverse microporators of a kind of cornea about the utility model yet there are no report.
Summary of the invention
The purpose of this utility model is to provide a kind of reverse microporators of cornea.
To achieve the above object, the technical scheme adopted by the utility model is that:
A kind of reverse microporators of cornea, the reverse microporators of the cornea include upper end handle (1), lower end hand
Handle (2), lower end extension rod (4), adjusting rod (5), torsionspring (6), extension rod fixed ring (7), is adjusted upper end extension rod (3)
Bar fixed ring (8), gasket (9) control deep axis (10) and formed punch (20)；The upper surface of described upper end handle (1) is equipped with antiskid thread
(11), it is fixedly connected with upper end extension rod (3) on the head of the upper end handle (1), in described upper end extension rod (3) inside
Empty, left side opening；The head of the upper end extension rod (3) is fixedly connected with extension rod fixed ring (7)；The upper end extension rod
(3) head end and adjusting rod (5) head end with rivet (31) hingedly, torsionspring (6) are housed on the rivet (31), torsionspring
(6) both ends are individually fixed in adjusting rod (5) and upper end extension rod (3) inner wall；It is fixedly connected on the head of the adjusting rod (5)
There are adjusting rod fixed ring (8)；The front end of the extension rod fixed ring (7) and adjusting rod fixed ring (8) is equipped with positioning protrusion
(71)；The gasket (9) is in cylindrical shape, is equipped with the mellow and full curved surface (91) of indent, the circle in the bottom surface of the gasket (9)
Moisten curved surface (91) and is equipped with two mutually perpendicular mark lines (92)；Position is opposite there are two setting in the side of the gasket (9)
Location hole (93)；The location hole (93) and the positioning protrusion (71) combine；It is set below the lower end handle (2)
Have antiskid thread (11), the tail portion of the lower end handle (2) is fixedly connected with upper end handle (1)；The upper end handle (1) and
Tweezer shape is integrally formed in lower end handle (2)；Lower end extension rod (4) are fixedly connected on the head of the lower end handle (2), under described
The front end at end extension rod (4) is vertically fixedly connected with the deep axis (10) of control；The control depth axis (10) is in integrally cylindrical shape, in institute
The upper surface for controlling deep axis (10) is stated equipped with protrusion curved surface (110), is equipped with external screw thread (120) in the side for controlling deep axis (10)；Institute
Internal screw thread (210) on the external screw thread (120) and formed punch (20) stated combines；The formed punch (20) is the cylindrical body of inner hollow
Shape is equipped with internal screw thread (210) on the inner wall of the formed punch (20)；It is gradually thinning upwards in the side wall of the formed punch (20) and be in
Horn-like expansion finally forms closed-loop type cutter head (220) in upper end.
The length of the upper end handle (1) and lower end handle (2) is 10cm, and the upper end extension rod (3) and lower end extend
The length of bar (4) is 2cm, the adjusting rod (5) a length of 1cm.
The head end of the upper end extension rod (3) and the head end of lower end extension rod (4) are the distance between in its natural state
1cm。
It is at α angle between positioning protrusion (71) on the adjusting rod (5) and adjusting rod fixed ring (8), and the angle α is greater than 79 degree
Less than 84 degree.
Described gasket (9) a height of 2mm, diameter 4mm；The aperture of the location hole (93) is 1mm；The mellow and full curved surface
(91) radius of curvature is 7.8mm；Line between two location holes (93) is parallel to a wherein mark line (92)；Gasket
(9) material is polymethyl methacrylate.
The rate radius value for controlling deep axis (10) upper process curved surface (110) is 6.8mm, the screw pitch of side external screw thread (120)
20μm。
The outer diameter of the formed punch (20) is 2mm, and the angle that formed punch (20) side is expanded upwards is β, and β is 8.5 degree.
The control depth axis (10) is 10 μm higher than the formed punch (20), and total height about 1mm when the two screws completely.
The utility model advantage is:
1, the material of the utility model gasket uses polymethyl methacrylate, with the high grade of transparency, refractive index it is small, at
The characteristics of this is low, easy processing；The design of gasket lower surface mark line simultaneously, is accurately placed in patient for gasket center convenient for patient
The central visual axis mark point of art eye.
2, the reverse microporators of the cornea of the utility model can carry out the replacement of gasket, step by pressing adjusting rod
Simply；
3, the extension rod fixed ring and adjusting rod fixed ring of the utility model are located at gasket two sides, not only reduce pair
Visual area is blocked, and the design enables line rotation of the gasket between two fixed ring protrusions, ensure that the present invention to different thickness
When the cornea of degree carries out the production of reverse micropore, it is smooth that pairing is remained to up and down.
4, the radius of curvature of mellow and full curved surface and the radius of curvature of deep axis upper process curved surface is controlled on the utility model gasket, met
People's cornea physiological camber, can sufficiently be bonded cornea, in addition the design of perforating type, muddy portion that can rapidly to thin plate layer after cornea
Divide and carry out ring cutting, and incisxal edge is neat, avoids rotary-cut repeatedly and cause the consequences such as irregular, the incisxal edge descemet's membrane removing of incisxal edge；
5, internal screw thread and externally threaded design between the utility model control depth axis and formed punch, can not only be adjusted according to needed for individual
Punch depth, moreover it is possible to closed-loop type cutter head, high financial profit are replaced after edge of a knife rust is used for multiple times.
6, the deep axis of the control of the utility model has the supporting role in corneal Endothelium face micropore production area simultaneously, can not damage
It effectively prevent punching under the premise of hurting surrounding endothelial cell too deep.
7, the formed punch of the utility model is in horn-like expansion (expansion angle β is 8.5 °) upwards, which can make incisxal edge hang down
Directly in cornea interior surface, be conducive to the healing in subsequent micropore area.
Detailed description of the invention
Attached drawing 1 is a kind of structural schematic diagram of reverse microporators of cornea.
Attached drawing 2 is the upper end handle, lower end handle, upper end extension rod, lower end extension of a kind of reverse microporators of cornea
The schematic diagram that bar combines.
Attached drawing 3 is the upper end extension rod and extension rod fixed ring, adjusting rod and adjusting of a kind of reverse microporators of cornea
The combination schematic diagram of bar fixed ring.
Attached drawing 4 is a kind of gasket construction schematic diagram of reverse microporators of cornea.
Attached drawing 5 is the structural schematic diagram of a kind of deep axis of control of reverse microporators of cornea, formed punch.
Attached drawing 6 is the plan view that the deep axis of control, the formed punch of a kind of reverse microporators of cornea combine.
Attached drawing 7 is a kind of adjusting rod of reverse microporators of cornea, adjusting rod fixed ring, the floor map of formed punch.
Attached drawing 8 is a kind of partial schematic diagram of reverse microporators of cornea.
Attached drawing 9 is a kind of use plan view of reverse microporators of cornea.
Specific embodiment
The utility model is further described below with reference to embodiment and referring to attached drawing.
Appended drawing reference involved in attached drawing and component part are as follows:
1, upper end handle
11, antiskid thread
2, lower end handle
3, upper end extension rod
31, rivet
4, lower end extension rod
5, adjusting rod
6, torsionspring
7, extension rod fixed ring
71, positioning protrusion
8, adjusting rod fixed ring
9, gasket
91, mellow and full curved surface
92, mark line
93, location hole
10, deep axis is controlled
110, protrusion curved surface
120, external screw thread
20, formed punch
210, internal screw thread
220, closed-loop type cutter head
Embodiment 1
Attached drawing 1 is please referred to, attached drawing 1 is a kind of structural schematic diagram of the reverse microporators of cornea of the present embodiment.It is described
The reverse microporators of cornea include upper end handle (1), lower end handle (2), upper end extension rod (3), lower end extension rod (4),
Adjusting rod (5), extension rod fixed ring (7), adjusting rod fixed ring (8), gasket (9), controls deep axis (10) and punching at torsionspring (6)
Head (20)；
Attached drawing 2, attached drawing 3, attached drawing 8 are please referred to, attached drawing 2 is a kind of upper end of the reverse microporators of cornea of the present embodiment
The schematic diagram that handle, lower end handle, upper end extension rod, lower end extension rod combine, attached drawing 3 is that a kind of cornea of the present embodiment is reverse
The upper end extension rod of microporators and the combination schematic diagram of extension rod fixed ring, adjusting rod and adjusting rod fixed ring, attached drawing 8 are
A kind of partial schematic diagram of the reverse microporators of cornea of the present embodiment.The upper surface of described upper end handle (1) is equipped with anti-skidding spiral shell
Line (11) is fixedly connected with upper end extension rod (3) on the head of the upper end handle (1), and the upper end extension rod (3) is internal
Hollow, left side opening；The head of the upper end extension rod (3) is fixedly connected with extension rod fixed ring (7)；The upper end extension rod
(3) head end and adjusting rod (5) head end with rivet (31) hingedly, torsionspring (6) are housed on the rivet (31), torsionspring
(6) both ends are individually fixed in adjusting rod (5) and upper end extension rod (3) inner wall；It is fixedly connected on the head of the adjusting rod (5)
There are adjusting rod fixed ring (8)；The front end of the extension rod fixed ring (7) and adjusting rod fixed ring (8) is equipped with positioning protrusion
(71)；
Attached drawing 4 is please referred to, attached drawing 4 is a kind of gasket construction schematic diagram of the reverse microporators of cornea of the present embodiment.
The gasket (9) is in cylindrical shape, is equipped with the mellow and full curved surface (91) of indent, the mellow and full song in the bottom surface of the gasket (9)
Face (91) is equipped with two mutually perpendicular mark lines (92)；Position is opposite there are two setting in the side of the gasket (9) determines
Position hole (93)；The location hole (93) and the positioning protrusion (71) combine；
Attached drawing 2, attached drawing 5, attached drawing 6 are please referred to, attached drawing 2 is a kind of upper end of the reverse microporators of cornea of the present embodiment
The schematic diagram that handle, lower end handle, upper end extension rod, lower end extension rod combine, attached drawing 5 is that a kind of cornea of the present embodiment is reverse
The structural schematic diagram of the deep axis of the control of microporators, formed punch, attached drawing 6 is a kind of reverse microporators of cornea of the present embodiment
Control deep axis, the plan view that formed punch combines.Antiskid thread (11) are equipped with below the lower end handle (2), the lower end handle (2)
Tail portion be fixedly connected with upper end handle (1)；Tweezer shape is integrally formed in the upper end handle (1) and lower end handle (2)；Described
The head of lower end handle (2) is fixedly connected with lower end extension rod (4), and the front end of the lower end extension rod (4) is vertically fixedly connected
There is the deep axis (10) of control；The control depth axis (10) is integrally in cylindrical shape, is equipped with protrusion in the upper surface for controlling deep axis (10)
Curved surface (110) is equipped with external screw thread (120) in the side for controlling deep axis (10)；On the external screw thread (120) and formed punch (20)
Internal screw thread (210) combines；The formed punch (20) is the cylindrical shape of inner hollow, is equipped on the inner wall of the formed punch (20)
Internal screw thread (210)；It is gradually thinning upwards in the side wall of the formed punch (20) and be in horn-like expansion, finally upper end formed closed loop
Type cutter head (220).
Attached drawing 1, attached drawing 7 are please referred to, attached drawing 1 is a kind of structural representation of the reverse microporators of cornea of the present embodiment
Figure, attached drawing 7 are that the adjusting rods of the reverse microporators of cornea of the present embodiment a kind of, adjusting rod fixed ring, the plane of formed punch are shown
It is intended to.The length of the upper end handle (1) and lower end handle (2) is 10cm, the upper end extension rod (3) and lower end extension rod
(4) length is 2cm, the adjusting rod (5) a length of 1cm；The head end and lower end extension rod (4) of the upper end extension rod (3)
Head end, the distance between be in its natural state 1cm；Positioning protrusion on the adjusting rod (5) and adjusting rod fixed ring (8)
(71) at α angle between, and the angle α is greater than 79 degree less than 84 degree；Described gasket (9) a height of 2mm, diameter 4mm；The location hole
(93) aperture is 1mm；The radius of curvature of the mellow and full curved surface (91) is 7.8mm；Line between two location holes (93) is flat
Row is in a wherein mark line (92)；The material of gasket (9) is polymethyl methacrylate；Deep axis (10) upper process of the control is bent
The rate radius value in face (110) is 6.8mm, 20 μm of the screw pitch of side external screw thread (120)；The outer diameter of the formed punch (20) is 2mm, institute
Stating the angle that formed punch (20) side is expanded upwards is β, and β is 8.5 degree；The control depth axis (10) is higher than the formed punch (20)
10 μm, and the two revolve completely and when total height about 1mm.
Embodiment 2
Attached drawing 1, attached drawing 9 are please referred to, attached drawing 1 is a kind of structural representation of the reverse microporators of cornea of the present embodiment
Figure, attached drawing 9 are a kind of use plan views of the reverse microporators of cornea of the present embodiment.
The use process and method of the reverse microporators of cornea:
The central visual axis of preoperative label patient's art eye, OCT clearly plants the interface of piece and plant bed, and measures the interface to angle
The thickness of surface in film, before the start of the surgery under ophthalmic operating microscope by the punching depth of the reverse microporators of cornea into
Row adjustment.
Deep axis (10) and formed punch (20) are controlled when screwing completely, the latter upper end is 10 μm higher than the former；According to required depth, often
Formed punch (20) are screwed out into 1 circle, formed punch (20) moves up 20 μm.Do telltale mark prior to outer corneal surface in art, after in temporo side angle film
Edge does the notch of 3mm.Current scour causes descemet's membrane to remove when to avoid displacement viscoelastic agent, therefore nothing is persistently injected in anterior chamber
Bacterium air is to maintain anterior chamber.It controls deep axis (10) and formed punch (20) and lower end extension rod (4) enters anterior chamber, gasket (9) is moved to pre-
The position first marked guarantees that mark line (92) crosspoint of gasket (9) lower surface is overlapped with cornea mark point.Upper end is mediated simultaneously
Handle (1), lower end handle (2) can produce the micropore of diameter 2mm in cornea interior surface, afterwards using Tweezers for eye surgery by micropore area
Interior corneal posterior lamella, descemet's membrane and endothelial layer is removed at the interface of plant piece certainly.It so not only ensure that peritreme
It is neat and metaplax layer strip thickness, and substantially reduce operating difficulty and time.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel can also make several improvement and supplement without departing from the principle of this utility model, these are improved and supplement
Also it should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of reverse microporators of cornea, which is characterized in that the reverse microporators of the cornea include upper end handle
(1), lower end handle (2), upper end extension rod (3), lower end extension rod (4), adjusting rod (5), torsionspring (6), extension rod are fixed
Ring (7), gasket (9), controls deep axis (10) and formed punch (20) at adjusting rod fixed ring (8)；The upper surface of described upper end handle (1) is equipped with
Antiskid thread (11) is fixedly connected with upper end extension rod (3), the upper end extension rod on the head of the upper end handle (1)
(3) inner hollow, left side opening；The head of the upper end extension rod (3) is fixedly connected with extension rod fixed ring (7)；On described
It holds extension rod (3) head end and adjusting rod (5) head end hingedly, torsionspring (6) to be housed on the rivet (31) with rivet (31), turns round
The both ends for turning spring (6) are individually fixed in adjusting rod (5) and upper end extension rod (3) inner wall；It is solid on the head of the adjusting rod (5)
Surely adjusting rod fixed ring (8) are connected with；The front end of the extension rod fixed ring (7) and adjusting rod fixed ring (8) is equipped with positioning
Raised (71)；The gasket (9) is in cylindrical shape, is equipped with the mellow and full curved surface (91) of indent, institute in the bottom surface of the gasket (9)
Mellow and full curved surface (91) are stated equipped with two mutually perpendicular mark lines (92)；Position there are two being set in the side of the gasket (9)
Opposite location hole (93)；The location hole (93) and the positioning protrusion (71) combine；Under the lower end handle (2)
Face is equipped with antiskid thread (11), and the tail portion of the lower end handle (2) is fixedly connected with upper end handle (1)；The upper end handle
(1) and tweezer shape is integrally formed in lower end handle (2)；Lower end extension rod (4) are fixedly connected on the head of the lower end handle (2),
The front end of the lower end extension rod (4) is vertically fixedly connected with the deep axis (10) of control；The control depth axis (10) is integrally in cylindrical body
Shape is equipped with protrusion curved surface (110) in the upper surface for controlling deep axis (10), is equipped with external screw thread in the side for controlling deep axis (10)
(120)；Internal screw thread (210) on the external screw thread (120) and formed punch (20) combines；The formed punch (20) is inner hollow
Cylindrical shape, on the inner wall of the formed punch (20) be equipped with internal screw thread (210)；The formed punch (20) side wall upwards gradually
It is thinning and be in horn-like expansion, finally upper end formed closed-loop type cutter head (220).
2. the reverse microporators of cornea according to claim 1, which is characterized in that the upper end handle (1) and lower end
The length of handle (2) is 10cm, and the length of the upper end extension rod (3) and lower end extension rod (4) is 2cm, the adjusting rod
(5) a length of 1cm；The head end of the upper end extension rod (3) and the head end of lower end extension rod (4), in its natural state between away from
From for 1cm.
3. the reverse microporators of cornea according to claim 1, which is characterized in that the adjusting rod (5) and adjusting rod
It is at α angle between positioning protrusion (71) in fixed ring (8), and the angle α is greater than 79 degree less than 84 degree.
4. the reverse microporators of cornea according to claim 1, which is characterized in that described gasket (9) a height of 2mm,
Diameter is 4mm；The aperture of the location hole (93) is 1mm；The radius of curvature of the mellow and full curved surface (91) is 7.8mm；Two fixed
Line between position hole (93) is parallel to a wherein mark line (92)；The material of gasket (9) is polymethyl methacrylate.
5. the reverse microporators of cornea according to claim 1, which is characterized in that deep axis (10) upper process of the control is bent
The rate radius value in face (110) is 6.8mm, 20 μm of the screw pitch of side external screw thread (120)；The outer diameter of the formed punch (20) is 2mm, institute
Stating the angle that formed punch (20) side is expanded upwards is β, and β is 8.5 degree.
6. the reverse microporators of cornea according to claim 1, which is characterized in that described in control depth axis (10) ratio
Formed punch (20) it is 10 μm high, and total height about 1mm when the two screws completely.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108309557A (en) * | 2018-03-29 | 2018-07-24 | 上海市同济医院 | A kind of reverse microporators of cornea |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309557A (en) * | 2018-03-29 | 2018-07-24 | 上海市同济医院 | A kind of reverse microporators of cornea |
| CN108309557B (en) * | 2018-03-29 | 2024-04-02 | 上海市同济医院 | Cornea reverse micropore making device |
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