CN1698558A - Insertion device for deformable intraocular lens - Google Patents
Insertion device for deformable intraocular lens Download PDFInfo
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- CN1698558A CN1698558A CN 200510075982 CN200510075982A CN1698558A CN 1698558 A CN1698558 A CN 1698558A CN 200510075982 CN200510075982 CN 200510075982 CN 200510075982 A CN200510075982 A CN 200510075982A CN 1698558 A CN1698558 A CN 1698558A
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Abstract
An intraocular-lens insertion device is adapted to deform a deformable intraocular lens (1) into a smaller size and insert the intraocular lens (1) into an eye via an insertion tube (17). An intraocular-lens guide (24) is provided on the inner surface of the insertion tube (17). The guide (24) may be a rail-shaped projection or a groove, which extends parallel to a direction along which the intraocular lens (1) is pushed out. A stress release structure (103) is provided on the insertion tube (121) in order to release stress of the intraocular lens (1) produced due to deformation thereof. Moreover, a frictional-resistance increasing structure (104) is provided on the inner surface of the insertion tube (121) to be located in the vicinity of the stress release structure (103). The frictional-resistance increasing structure (104) increases frictional resistance between the inner surface of the insertion tube (121) and the intraocular lens (1). The frictional-resistance increasing structure (104) may be a roughened surface which completely or partially covers the inner surface of the insertion tube (121).
Description
Technical field
The present invention relates to a kind of insertion device, be used for deformable intra-ocular lens is inserted eyes.The example of this deformable intra-ocular lens comprises the deformable intra-ocular lens, and it inserts in the eyes to substitute natural lens, when the latter takes out from health owing to cataract; And the vision correction crystalline lens, the sole purpose that it inserts in the eyes is in order to correct defects of vision.
Background technology
First with an intraocular lens, promptly intra-ocular lens inserted during cataract operation in people's the eyes to substitute and rises in the muddy natural lens, transplants intra-ocular lens and is carried out widely with the treatment cataract from Ridley in 1949.
Disclose as speciallyying permit in Japan among disclosed patent application (Kokai) No.58-146346, invented improved intra-ocular lens, they can insert in the eye by the little otch that is formed in the eyeball.In a kind of improved intra-ocular lens, opticator is made by elastomeric material deformable, that have predetermined memory character at least.In the improved intra-ocular lens of another kind, opticator is made by elastomeric material deformable, that have predetermined memory character at least, and is provided with supporting, and they are made by the material that is different from opticator, and are suitable for opticator is supported in the eye.
In addition, disclose as speciallyying permit in Japan among disclosed patent application (Kokai) No.4-212350, applicant of the present invention has proposed improved insertion device.By using these devices, the opticator of intra-ocular lens is compressed, spreading, bending, stretching or folding, so that reduce its external dimensions, thereby intra-ocular lens can be inserted in the eye by the little otch that is formed in the eyeball.These insert device and help the operation in the intra-ocular lens implantation eye.
Figure 16 and Figure 17 A and 17B represent conventional deformable intra-ocular lens.The deformable intra-ocular lens 1 that is shown among Figure 16 is made of circular opticator 2 and two symmetrically arranged supportings 3.Circular opticator 2 is made by the elastomeric material with predetermined memory character.Supporting 3 is made by the material that is different from opticator 2, and supports 3 substrate 3a and be embedded in the neighboring area of opticator 2, be used for fixing, and the wire afterbody 3b of supporting is curved.The deformable intra-ocular lens 1 that is shown among Figure 17 A and the 17B is made of circular opticator 2 and a pair of laminal supporting part 4, and supporting part 4 is made into integration with opticator 2.Opticator 2 is the same with opticator 2 shown in Figure 16, is made by the elastomeric material with predetermined memory character.Supporting part 4 is outstanding in opposite direction from the periphery of opticator 2.
Figure 18 is the perspective view of the partly cut-away of common insertion device, is used for above-mentioned intra-ocular lens is folded and be deformed into less size, and by insertion tube crystalline lens is inserted in the eye.
Figure 19 is the enlarged perspective that inserts the insertion tube that uses in the device; Figure 20 is the enlarged perspective of the insertion end part of insertion tube; Figure 21 is the cross-sectional view along Figure 20 cathetus 21-21 intercepting; And Figure 22 is the sectional view that amplifies, and the operation of the insertion end part of the insertion tube of using in the device is inserted in its expression.
Among Figure 18, label 11 indication device main bodys; 12 expression push strut; 13 expression pin thread axles; And 14 expression ejecting mechanisms.
Common insertion device with said structure is used as follows.Intra-ocular lens 1 is placed in the crystalline lens section of laying 16 of closure member 18, and before being loaded on the insertion apparatus main body, is folded into less size.
When finishing the loading of intra-ocular lens 1, the pin thread axle 13 that intra-ocular lens inserts device rotates, so that spiral is sent push strut 12 to.As a result, the process in the intra-ocular lens insertion eye begins.
The top that intra-ocular lens 1 is pushed depression bar 12 promotes forward gradually.When intra-ocular lens 1 arrived the insertion end part 17a of insertion tube 17, the axial stretching, extension slit 17b of insertion end part 17a opened gradually.As a result, the stress in the opticator 2 of the intra-ocular lens 1 of the base end side 17c that is fully folded at insertion tube 17 discharges in insertion end part 17a gradually.Then, intra-ocular lens 1 inserts the eye from opening 17d.
At such insertion intra-operative, at slit 17b intra-ocular lens 1 is sandwiched in its intermediary while, slit 17b clamps the opticator 2 of intra-ocular lens 1, thus stop intra-ocular lens 1 unload suddenly pleasing to the eye in.In addition, though slit 17b discharges the stress of intra-ocular lens 1, intra-ocular lens 1 still is clamped among the insertion end part 17a, it is clamped from the both sides of intra-ocular lens 1 because be positioned at the upper and lower cutting surface of slit 17b.In addition, slit 17b can control the speed of advancement of the insertion speed of intra-ocular lens 1 with coupling push strut 12.
The problem that a first aspect of the present invention desire solves
But, because when being pushed vertically after inserting the insertion tube of device crystalline lens being folded within the eye, intra-ocular lens means of rotating around the central axis of insertion tube without limits, shown in the pecked line of Figure 22, intra-ocular lens 1 can rotate along the peripheral direction of the inner wall surface of insertion tube 17.
As a result, be arranged on the slit on the insertion tube top and the intra-ocular lens that is folded between the position relation change, thereby make operator under the state that requires, not penetrate intra-ocular lens in the top from insertion tube.Therefore, the direction of insertion of intra-ocular lens and insertion speed are difficult to stably, high-repetition-rate ground is controlled, and therefore, the intra-ocular lens transplant operation requires the skill of height.
The problem that a second aspect of the present invention desire solves
In addition, above-mentioned common insertion device has following defective.
Insertion tube is made by same material to the entire portion of head portion from the base terminal part, and it is enough firm, destroys owing to crystalline lens moves through insertion tube in order to stop insertion tube.Therefore, the situation that the frictional resistance between crystalline lens and insertion tube is little, the stress that produces between deformation phases penetrates from the insertion tube top at crystalline lens and discharges when entering eyes, thus crystalline lens flies out and enters eyes, may damage the cell tissue in the eyes.
In order to solve such problem, proposed to have the insertion device of strain relief.An example of this strain relief is the slit that partly extends towards its base terminal from the top of insertion tube, so that discharge lenticular stress gradually, and crystalline lens inserts in the eye by slit.
Another example of this strain relief is the cutting part of an inclination, and it forms towards its base end inclined cut insertion tube by the top from insertion tube.The inclined cut part can discharge stress gradually, thereby stops crystalline lens to fly into eyes, and if not, it will take place when stress discharges suddenly.
But, when forming from extending to the vertical long slit of insertion tube near the insertion tube base terminal, perhaps the angle of inclined cut part reduces so that increase the length of cutting part, thereby discharges stress more lenitively to strengthen when safe, and slit or cutting part are towards near the ophthalmic cell tissue the otch.At this moment, when crystalline lens inserts ophthalmic, crystalline lens possibility exposing cell tissue, and with its damage.
Summary of the invention
An object of the present invention is to propose a kind of device for inserting deformable intra-ocular crystalline lens, it can limit intra-ocular lens around the central axis of insertion tube and rotate, so that stably keep the direction of insertion and the insertion speed of intra-ocular lens.
Another object of the present invention is to propose a kind of device for inserting deformable intra-ocular crystalline lens, and it can by the speed of advancement of frictional limited intra-ocular lens, so that stop lenticular destruction, can make crystalline lens insert ophthalmic more reliably when stress release.
A kind of insertion device is proposed according to a first aspect of the invention, be used for the deformable intra-ocular lens is inserted eyes, wherein, the guide way of intra-ocular lens is arranged on the inner surface of insertion tube, so that when the intra-ocular lens that is in folded state passes through insertion tube, stop intra-ocular lens to rotate around the central axis of insertion tube.Therefore, stable insertion operation becomes possibility, and the transplant operation of intra-ocular lens can be implemented by not having highly empirical operator.In addition, because the attitude of intra-ocular lens in insertion tube is stable, the insertion speed of intra-ocular lens can stably be controlled.
Propose a kind of insertion device according to second aspect present invention, be used for the deformable intra-ocular lens is inserted eyes, wherein, insertion tube has strain relief, is used to discharge the crystalline lens stress that produces between the crystalline lens deformation phases; And frictional resistance increases structure, and it is arranged on the inner surface of insertion tube, and be positioned at strain relief near.Therefore, insert device with the common intra-ocular lens that only has strain relief and compare, crystalline physical ability is inserted in the eyes with slower speed.Like this, intra-ocular lens can insert in the eyes safely.
It can be the fluffing surface that frictional resistance increases structure, and it is stretched in insertion tube along on the whole or local inner surface of peripheral direction.
Description of drawings
In conjunction with the accompanying drawings, consider the following detailed description of preferred embodiment, make various other purpose of the present invention, characteristics, and bonus is easier to understand, thereby be easier to correctly be estimated, wherein:
Fig. 1 is the perspective view that the intra-ocular lens of first embodiment proposition according to a first aspect of the invention inserts device;
Fig. 2 is the enlarged perspective of closure member among Fig. 1;
Fig. 3 is the enlarged perspective of insertion end part among Fig. 1;
Fig. 4 is the cross-sectional view along Fig. 3 straight line 4-4 intercepting;
Fig. 5 is the sectional view that installs among Fig. 1, is used for the description operation process;
Fig. 6 is the enlarged perspective of insertion end part among Fig. 1, is used for the description operation process;
Fig. 7 represents second embodiment of a first aspect of the present invention;
Fig. 8 represents the 3rd embodiment of a first aspect of the present invention;
Fig. 9 represents the 4th embodiment of a first aspect of the present invention;
Figure 10 is the perspective view that the intra-ocular lens of an embodiment proposition according to a second aspect of the invention inserts device;
Figure 11 is the left side view of insertion tube among Figure 10;
Figure 12 is the plane graph of insertion tube among Figure 10;
Figure 13 is the right side view of insertion tube among Figure 10;
Figure 14 is the plane graph of insertion tube, and it represents its user mode;
Figure 15 is the plane graph of insertion tube, another example of the structure that its expression increase frictional resistance is used;
Figure 16 is the plane graph of common deformable intra-ocular lens.
Figure 17 A is the plane graph of another kind of common deformable intra-ocular lens;
Figure 17 B is the cross-sectional view along 17B-17B intercepting among Figure 17 A;
Figure 18 is the perspective view that common intra-ocular lens inserts the partly cut-away of device;
Figure 19 is the enlarged perspective of closure member among Figure 18;
Figure 20 is the enlarged perspective of insertion end part among Figure 19;
Figure 21 is the cross-sectional view along Figure 20 cathetus 21-21 intercepting; And
Figure 22 is a cross-sectional view, and it represents to insert among Figure 18 the operation of device.
The specific embodiment
Embodiments of the invention will be illustrated with reference to the accompanying drawings.
Intra-ocular lens insertion device according to first embodiment proposition of first aspect present invention at first will be described.
Fig. 1 is the perspective view that inserts device according to the intra-ocular lens of first embodiment proposition of first aspect present invention.
Intra-ocular lens inserts device and comprises and be roughly columniform tube main body 11; Push strut 12, it is assemblied in the apparatus main body 11; Ejecting mechanism 14, it comprises and forms in female thread (not shown) on the inner periphery surface of apparatus main body 11 and be in pin thread axle 13 in the screw-threaded engagement; And closure member 18, it comprises crystalline lens section of laying 16 with hinge fraction 15 and the insertion tube of giving prominence to forward from the crystalline lens section of laying 16 17.Connect in the top of head portion that groove 11a forms in apparatus main body 11, and along axially stretching.Closure member 18 is loaded in the apparatus main body 11 by groove 11a.Push strut 12 is connected on the pin thread axle 13 rotationally, and is supported by apparatus main body 11 by this way, and promptly it is restricted relative to rotating of apparatus main body 11.
Fig. 2 is the enlarged perspective of closure member, and closure member is loaded in the head portion of apparatus main body 11.As shown in Figure 2, the crystalline lens section of laying 16 of closure member 18 has fixes half sleeve 19 and movable half sleeve 20, and their lower limb part links together by hinge fraction 15.Fix the rear end that half sleeve 19 is arranged on insertion tube 17 regularly.Movable half sleeve 20 is positioned at the rear end of adjacent insertion tube 17, and can relative fixed half sleeve 19 and open and close.Fixed and active pressure strip 21 and 22 is given prominence to from fixed and active half sleeve 19 and 20 respectively.
Movable half sleeve 20, hinge fraction 15 and movable pressure plate 22 constitute opening/closing mechanism.When opening/closing mechanism closes, movable pressure plate 22 contact fixed pressure plates 21, thus fix half sleeve 19 and movable half sleeve, 20 one of formation and insertion tube 17 co-axial pipes.When movable pressure plate 22 was closed after crystalline lens 1 is positioned on the crystalline lens section of laying 16 within the eye, intra-ocular lens 1 was folded and is deformed into little size.
The internal diameter of the base terminal part 17c of insertion tube 17 equals by the internal diameter of fixing the pipe that half sleeve 19 and movable half sleeve 20 form when being in contact with one another.Insertion tube 17 has taper insertion end part 17a on its top.Insertion end part 17a has the slit 17b of axial stretching, extension.
Said structure is equal to the structure that discloses among Japan special permission publication application (Kokai) No.08-038542 (prior art) substantially.
Fig. 3 is the enlarged perspective of insertion end part, and it forms in the top of closure member among Fig. 2; Fig. 4 is the cross-sectional view along Fig. 3 cathetus 4-4 intercepting; Fig. 5 is the explanatory of operation, and its expression is positioned at the intra-ocular lens of the distortion within the insertion tube of Fig. 3; And Fig. 6 is the explanatory of an operation, the intra-ocular lens that its expression is just partly being penetrated from insertion end.
Shown in Fig. 3 to 5, the intra-ocular lens that proposes according to first embodiment inserts the targeting part (outthrust) 24 that device has orbit-shaped, it forms on the top of inner wall surface 17e, and be parallel to the central axis of insertion tube 17 and stretch, promptly be parallel to the direction that intra-ocular lens releases along this and stretched.The intra-ocular lens that targeting part 24 restriction is folded/rotate around central axis, if not, such rotation crystalline lens within the eye is urged and takes place when mobile.Targeting part 24 has rectangular cross section, and forms with insertion tube 17.Targeting part 24 extends to head portion 17a along the axis of insertion tube 17 continuously from base terminal part 17c.
As shown in figure 16, intra-ocular lens 1 has circular opticator 2 and two symmetrically arranged supportings 3.Circular opticator 2 is made by the elastomeric material with predetermined memory character.Supporting 3 is made by the material that is different from opticator 2.
According to first embodiment, the use with intra-ocular lens insertion device of said structure is undertaken by following.At first, closure member 18 is taken out from the connection groove 11a of apparatus main body 11.Then, open the movable pressure plate 22 and movable half sleeve 20 of closure member 18; The opticator 2 of intra-ocular lens 1 is placed on the hinge fraction 15 of the crystalline lens section of laying 16, forms simultaneously predetermined gap betwixt, and intra-ocular lens 1 is placed with, an one supporting 3 is positioned at the front side, and another supports 3 and is positioned at rear side.Then, movable pressure plate 22 and movable half sleeve 20 are closed, and contact fixed pressure plate 21 respectively and fix half sleeve 19, thereby opticator 2 is folded into half in half sleeve 19 and 20, so that be deformed into less size.Then, closure member 18 is mounted among the connection groove 11a of apparatus main body 11.
After the insertion end part 17a of insertion tube 17 inserted the otch that is formed in the eyes, the pin thread axle 13 of ejecting mechanism 14 rotated.As a result, the head portion 23 of push strut 12 pushes the insertion end part 17a of insertion tube 17 with the opticator 2 of intra-ocular lens 1, thereby opticator 2 is injected in the eye when the slit 17b of insertion end part 17a opens gradually.
When intra-ocular lens 1 had arrived insertion end part 17a, as shown in Figure 5, the opposed end of the intra-ocular lens 1 that is folded divided opposite flank 24a and the 24b that contacts the targeting part 24 on the inner wall surface 17e that is formed at insertion tube 17.As a result, intra-ocular lens 1 is in its confined while of rotation around the central axis of insertion tube 17, is pushed out by the head portion 23 of push strut 12.
The head portion 23 that is noted that push strut 12 has female, and it prevents and targeting part 24 mutual interference of inwardly giving prominence to from insertion tube 17 mutually.
Therefore, intra-ocular lens 1 can return to the shape near its original shape when it is squeezed in slit 17b, thereby the direction of insertion of intra-ocular lens and insertion speed can stably be controlled.
Fig. 7,8 and 9 represents second and third and four embodiment of the targeting part 24 that proposes by first aspect present invention respectively.
In the embodiment of Fig. 7, targeting part 24 is formed on the position of periphery, and this position is offset towards slit 17b from the top of insertion tube 17 inner wall surface 17e.Also promptly, the intersecting lens between the plane of the peripheral position offset from inner wall at targeting part 24 places surface 17e and central axis by insertion tube 17, and walk abreast this plane substantially and stretch.
In the present embodiment, as shown in Figure 7, though a side surface of an end in contact targeting part 24 of intra-ocular lens 1, the other end of intra-ocular lens 1 is directed to the inside circumflexion in opposite side surface of part 24.Like this, the radial compression of intra-ocular lens 1 is released, thereby intra-ocular lens 1 can not be out of shape under the situation of the over-drastic compression stress of intra-ocular lens 1 transmission.
In the embodiment of Fig. 8, targeting part 24 is formed on the position of periphery, and this position is offset towards slit 17b from the top of the inner wall surface 17e of insertion tube 17.In addition, targeting part 24 has triangular cross section, and each side surface 24c and 24d that releases the direction stretching, extension along crystalline lens of targeting part 24 forms acute angle and obtuse angle in the opposed inner walls surface respectively.Also promptly, the intersecting lens between the plane of the peripheral position offset from inner wall at targeting part 24 places surface 17e and the central axis that passes through insertion tube 17, and stretch obliquely on this plane relatively.The triangular cross section of 24 tools of targeting part is not axisymmetric.The insertion device of present embodiment is designed to planish intra-ocular lens 1 rather than folding intra-ocular lens 1.
The targeting part 24 of Fig. 8 has asymmetric triangular cross section, and is arranged on the peripheral position, the intersecting lens between the plane of its offset from inner wall surface 17e and the central axis that passes through insertion tube 17.An end of a side surface 24c contact intra-ocular lens 1 of targeting part 24, thus restriction is around the rotation of central axis.The opposite side surface 24d of targeting part 24 has the oblique angle, is suitable for planishing reposefully intra-ocular lens 1.Like this, the radial compression of intra-ocular lens 1 is released, thereby intra-ocular lens can be out of shape more reposefully.Therefore, the insertion device of present embodiment has good effect to large diameter intra-ocular lens.
In the embodiment of Fig. 9, targeting part 24 is made of groove 24e, and it forms in the top of inner wall surface 17e, and along axially stretching.Because the restoring force of intra-ocular lens 1, the opposite side of intra-ocular lens 1 enters the groove 24e on the inner surface that is formed at insertion tube 17, and moves along this groove 24e.Like this, intra-ocular lens 1 can be avoided around the rotation of insertion tube central axis.The insertion device of present embodiment is effective especially to thick intra-ocular lens.
Illustrated that in the above-described embodiments such intra-ocular lens inserts device, it has the slit 17b on the insertion end part 17a that is formed at insertion tube 17.But, the invention is not restricted to these embodiment, but can be applied to such insertion tube, such as those insertion tubes that are disclosed among above-mentioned Japan special permission publication application (Kokai) No.5-103803 and the 7-23990, they have the conventional insertion end part that slit or otch are not set.
In addition, in the above-described embodiments, targeting part 24 is shaped integratedly with the inner wall surface 17e of insertion tube 17.But the present invention is not limited to these embodiment, but can be applied to such situation, and wherein elongated targeting part is shaped separately, and welds or be bonded on the inner wall surface 17e of insertion tube 17.
Also have, in the above-described embodiments, the targeting part 24 that forms on the inner wall surface 17e of insertion tube 17 adopts shape single, the elongated linear outthrust.But, targeting part 24 also can by some (as 2) orbit-shaped, be shaped as vertically and the outthrust that stretches constitutes.
Secondly, will the embodiment of a second aspect of the present invention be described.
Figure 10 is the perspective view that the intra-ocular lens of embodiment proposition according to a second aspect of the invention inserts device.The insertion device of present embodiment comprises apparatus main body 112, and it is equal to the apparatus main body that discloses among Japan special permission publication application (Kokai) No.7-23991 except that insertion tube 121.Pin thread 112c forms on the outer surface of rear end part 112a of apparatus main body 112.Pin thread 112c and the female thread 114a that forms on the inner surface of operating sleeve 114 carry out luer engages with, and operating sleeve 114 is arranged in the ejecting mechanism section.
The ejecting mechanism carboxylic comprises push strut 115, and it is coaxial and be provided with operating sleeve 114, and its rear end part is connected on the operating sleeve 114 rotationally.The anti-locking mechanism of Biao Shi rotation is along the longitudinal movement push strut 115, and forbids that push strut 115 rotates relative to apparatus main body 112.The not head portion of expression of push strut 115 has the shape of knowing, be fit to release intra-ocular lens.Closure member 116 with known structure is assemblied in the head portion of apparatus main body 112.After the intra-ocular lens 1 of not expression was placed on the closure member of opening 116, the closure member of opening 116 was closed, so that fold intra-ocular lens, and crystalline lens was held on folded state.Slippage brake 127 is assemblied on the apparatus main body 112 by this way, and consequently columniform slippage brake 127 can move axially, but can not rotate around axis.Slippage brake 127 remains in closed condition by the groove 127a that forms in wherein with closure member 116.Apparatus main body 112, operating sleeve 114, push strut 115, closure member 116 and make by synthetic resin with the integrally formed insertion tube of closure member 116 121.
The above-mentioned insertion device of intra-ocular lens 1 application that is shown among Figure 16 inserts by following mode.Intra-ocular lens 1 is made of circular opticator 2 and supporting 3.Supporting 3 is made by the material that is different from opticator 2.Intra-ocular lens 1 is fixed in the eyes by the elastic force of supporting 3.Folding intra-ocular lens 1 is as insert in the eyes followingly.Operator inserts crystalline lenses from the eyes of wherein taking away with insertion tube 121, and the rotating operation sleeve 114 then, so that move forward push strut 115.As a result, intra-ocular lens 1 is released from the head portion of insertion tube 121, inserts in the eyes.When intra-ocular lens 1 is moving through insertion tube 121 by push strut 115, when from insertion tube 121, coming out subsequently, because the elastic restoring force of opticator 2, the original state before intra-ocular lens 1 recovers it and is folded.
Figure 11,12 and 13 represents that wherein, Figure 11 is the left view of head portion according to the head portion of the insertion tube 121 of the embodiment proposition of second aspect present invention, and Figure 12 is the plane graph of head portion, and Figure 13 is the right view of head portion.As shown in figure 12, top section has the part of clipping 100, is used to make intra-ocular lens 1 to insert by less otch; And slit 103, as strain relief.As shown in figure 11, head portion has the part 102a of flattening and 102b, is used to make things convenient for head portion to insert otch.Figure 13 represents to flatten part 102a and 102b, and slit 103, and it stretches to its base terminal part from the top of insertion tube 121.As shown in figure 14, the head portion of slit 103 is crooked slightly to the right.
When intra-ocular lens 1 has arrived the base end timesharing of slit 103 within the eye in the insertion process of crystalline lens 1, slit 103 is owing to the restoring force of intra-ocular lens 1 is opened, the periphery edge of intra-ocular lens 1 part is pushed into the outside of insertion tube from slit 103, discharges the stress of intra-ocular lens 1 simultaneously.If when the stress of intra-ocular lens 1 discharges by slit 103, only produce little friction between crystalline lens 1 and the insertion tube 121 within the eye, then intra-ocular lens 1 recovers its original shape with very fast speed.In order to stop this situation, be provided with fluffing part 104, in order to cover near the inner surface of slit 103 insertion tubes fully along peripheral direction.The frictional resistance that fluffing part 104 increases between intra-ocular lens 1 and insertion tube 121 inner surfacies, thereby the high quick-recovery of prevention intra-ocular lens.
Figure 14 represents a kind of state, and wherein slit 103 is because the restoring force of the intra-ocular lens 1 that is folded begins to open from the head portion of insertion tube 121, and the periphery edge part of intra-ocular lens 1 has been pushed out to the side of insertion tube 121 from slit 103.Ophthalmic is crystalline stops after 1 periphery edge part releases from slit 103, and the stress of intra-ocular lens 1 by fluffing part 104 fully but discharged lenitively.Therefore, intra-ocular lens 1 still is clamped in the slit 103 regularly by its restoring force.When push strut 115 is pushed ahead again, whole intra-ocular lens 1 is inserted in the eyes.
Figure 15 represents a kind of structure, wherein is provided with the fluffing surface to cover the part inner surface of insertion tube.Even the part is provided with the fluffing surface, lenticular insertion speed also can be controlled shown in Figure 11 to 13.
In the present embodiment, be provided with at the head portion of insertion tube 121 and flatten part 102a and 102b, insert in the otch to make things convenient for head portion, therefore, the inboard smaller volume of insertion tube 121 head portions.Like this, if do not have to be shaped and be used to increase the fluffing part 104 of frictional resistance, in the time of then near the crystalline lens core that has maximum volume under folded state passes through the root of slit 103, its restoring force discharges suddenly, and intra-ocular lens may be released from slit 103 with too high speed.As a result, the supporting 3 of intra-ocular lens 1 as shown in figure 16 may damage the cell tissue of eyes.
In the present embodiment, the frictional resistance between insertion tube and the crystalline lens fluffs by the inner surface near the insertion tube the slit 103 to be increased, and it has played strain relief.But the method that increases frictional resistance is not limited to this.For example, form the fluffing part and also can obtain same effect, promptly the appropriate section of the inner surface of insertion tube is used and had highly adhering material and carry out coating and handle even use following method.
In the present embodiment, strain relief has form of slits, and it is shaped as from the top of insertion tube and extends to its base terminal.But the present invention is not limited to this kind form; Effect same also can obtain, if insertion tube is carried out inclined cut with formation inclined cut part from the basad end parts of its top ends, and near the inner surface insertion tube is positioned at the inclined cut part structure that increases frictional resistance is set.
In addition, though present embodiment has been used intra-ocular lens shown in Figure 16 1, its opticator 2 and supporting 3 are made by different materials, but but the also crystalline lens shown in the application drawing 17A, the making material of its supporting part 4 is identical with opticator 2, and is fixed in the eyes by the elastic force of material self.
Obviously, according to above thought, the present invention has countless corrections and remodeling.Therefore can understand that enforcement of the present invention can be different from the concrete example described in the literary composition.
Claims (6)
1. an intra-ocular lens inserts device, is used for the deformable intra-ocular lens is deformed into less size, and intra-ocular lens is inserted in the eyes, comprising:
Apparatus main body;
Insertion tube, it is connected on the front end of apparatus main body, suitable being inserted in the eyes;
Push strut, it can move axially by apparatus main body and insertion tube, suits when reach intra-ocular lens to be inserted in the eyes;
Ejecting mechanism is used to the push strut that moves forward;
Strain relief, it is arranged on the insertion tube, is suitable for discharging the stress owing to its distortion generation of intra-ocular lens; With
Frictional resistance increases structure, and it is arranged on the inner surface of insertion tube, be positioned at strain relief near, frictional resistance increases structure and increases frictional resistance between insertion tube inner surface and the intra-ocular lens.
2. intra-ocular lens as claimed in claim 1 inserts device, it is characterized in that strain relief comprises that one or more forms in the slit in the insertion tube, and slit extends to its base terminal part from the top of insertion tube.
3. intra-ocular lens as claimed in claim 1 inserts device, it is characterized in that, frictional resistance increases structure and comprises the fluffing surface, and it covers the inner surface of insertion tube along peripheral direction fully.
4. intra-ocular lens as claimed in claim 2 inserts device, it is characterized in that, frictional resistance increases structure and comprises the fluffing surface, and it covers the inner surface of insertion tube along peripheral direction fully.
5. intra-ocular lens as claimed in claim 1 inserts device, it is characterized in that, frictional resistance increases structure and comprises the fluffing surface, its local inner surface that covers insertion tube along peripheral direction.
6. intra-ocular lens as claimed in claim 2 inserts device, it is characterized in that, frictional resistance increases structure and comprises the fluffing surface, its local inner surface that covers insertion tube along peripheral direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP272433/2001 | 2001-09-07 | ||
| JP2001272433A JP2003070829A (en) | 2001-09-07 | 2001-09-07 | Inserting utensil for intraocular lens |
| JP133181/2002 | 2002-05-08 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021415838A Division CN1265771C (en) | 2001-09-07 | 2002-09-03 | Device for inserting deformable intra-ocular crystalline lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1698558A true CN1698558A (en) | 2005-11-23 |
Family
ID=19097806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510075982 Pending CN1698558A (en) | 2001-09-07 | 2002-09-03 | Insertion device for deformable intraocular lens |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003070829A (en) |
| CN (1) | CN1698558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945791A (en) * | 2011-11-22 | 2014-07-23 | 卡尔蔡司医疗技术股份公司 | Injector tip for an ocular lens injector device, device with an injector tip and an ocular lens, as well as ocular lens injector device |
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| RU2494704C2 (en) | 2009-02-11 | 2013-10-10 | Алькон Рисерч, Лтд. | Automatic injecting device for intraocular lens introduction |
| CN102665620B (en) | 2009-10-22 | 2014-11-26 | 兴和株式会社 | Intraocular lens insertion device |
| EP2502603B1 (en) | 2009-11-17 | 2016-10-19 | Kowa Company Ltd. | Intraocular lens insertion device |
| US8308799B2 (en) | 2010-04-20 | 2012-11-13 | Alcon Research, Ltd. | Modular intraocular lens injector device |
| US8579969B2 (en) | 2010-07-25 | 2013-11-12 | Alcon Research, Ltd. | Dual mode automated intraocular lens injector device |
| JP2013540521A (en) | 2010-09-30 | 2013-11-07 | イーチェー シューイー， | Reversibly deformable artificial cornea and method for implantation |
| US8657835B2 (en) | 2012-01-27 | 2014-02-25 | Alcon Research, Ltd. | Automated intraocular lens injector device |
| WO2018151141A1 (en) * | 2017-02-15 | 2018-08-23 | 参天製薬株式会社 | Intraocular lens injector |
-
2001
- 2001-09-07 JP JP2001272433A patent/JP2003070829A/en active Pending
-
2002
- 2002-09-03 CN CN 200510075982 patent/CN1698558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945791A (en) * | 2011-11-22 | 2014-07-23 | 卡尔蔡司医疗技术股份公司 | Injector tip for an ocular lens injector device, device with an injector tip and an ocular lens, as well as ocular lens injector device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003070829A (en) | 2003-03-11 |
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