CN1080551C - Tools for inserting deformable in-eye lens - Google Patents
Tools for inserting deformable in-eye lens Download PDFInfo
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- CN1080551C CN1080551C CN 94115689 CN94115689A CN1080551C CN 1080551 C CN1080551 C CN 1080551C CN 94115689 CN94115689 CN 94115689 CN 94115689 A CN94115689 A CN 94115689A CN 1080551 C CN1080551 C CN 1080551C
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- lens
- intraocular lens
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Abstract
The present invention relates to a deformable tool for inserting a lens into the eye. The tool is provided with a keeping member, a pushing mechanism and a tool body, wherein the holding member is used for deforming an intraocular lens into a small shape to be kept in a lens keeping part provided with a switching mechanism, and the intraocular lens is composed of an optical part with determined memory properties and a supporting part for supporting the optical part in the eyeball; the pushing mechanism is used for pushing the intraocular lens kept in the lens keeping part out into the eyeball; the tool body is used for arranging the pushing mechanism. The deformable tool is characterized in that an interference preventing part for preventing the interference between the lens keeping part in the eye and a pushing rod is arranged on the lens keeping part with the switching mechanism of the keeping member.
Description
The present invention relates to a kind of operating on and insert the deformable tools for inserting lens into eye that ophthalmic used substituting this crystal after the lens extraction of eyeball because of cataract.
During the excising operation of general cataractous eyeglass, (incision) is littler for the otch that cuts on the eyeball, and it is littler that scattered-light probability takes place in the operation back.
For this reason, developed a kind of so-called ultrasonic crystal emulsifying suction (KPE) of using ultrasound emulsifying suction device.This technology is to utilize above-mentioned ultrasound emulsifying suction device, the crystal of nebulousurineization is smashed and emulsifying after with its sucking-off.So only can be with lens extraction to the otch of the about 4mm of eyeball incision.This compares with the traditional ECCE (ECCE) that need cut the otch of about 10mm when the extracting lens, obviously makes progress.
For cooperating above-mentioned little cutting operation method, the intraocular lens that existing a kind of at present otch from childhood inserts ophthalmic is developed.Therefore traditional intraocular lens is to have the optic of being made by hard materials such as glass or plastic cement (optical part), and the otch size the during value of moving must be greater than the diameter of this optic.Multiple occasion, the otch size is at 6.5mm or bigger.Because this kind relation, even if, when inserting the intraocular lens of hard, otch need be cut expansion once again according to the KPE otch extracting lens from childhood of performing the operation.
A kind of deformable eyes buitin lens that can insert from the little otch of eyeball is disclosed in the clear 58-18005 of Japanese Patent Application (spy opens clear 58-146346).These lens 1 are the optic 2 that form of the deformably resilient material by the memory characteristic fixed to have and the support sector 3 that 2 of this optic are held in ophthalmic are constituted as shown in Figure 4.Support sector 3 and optic 2 are to form with different types of pliability material, the base portion 3a of support sector 3 are imbedded the peripheral part of optic 2 and fix, with the leading section 3b bending of wire and the 3 symmetric configurations of two support sectors.
In order to strengthen at intraocular constant intensity and in eyeball, to be compressed or still optic 2 can be fixed on the optical axis during other stress, above-mentioned support sector 3 makes with the materials such as synthetic resin that have pliability and have sufficient hardness, thereby has elasticity by the leading section 3b of the outstanding wire of optic 2.
This deformable eyes buitin lens is inserted used insertions utensil in eyeball, have as the flat 3-142067 of Japanese Patent Application number disclose.This inserts utensil, as Fig. 5 and shown in Figure 6, have: leading section is provided with the roughly tubular apparatus body 4 of its narrow wide position at the assembling ditch 4a of front, by the push-off pin 5 that is intercalated in apparatus body 4 and for making these push-off pin 5 advance and retreat be screwed into the ejecting mechanism 7 that the cylindrical shell 6 in the apparatus body constitutes, reach and insert the retaining member 11 that tube (insertion mouth) 10 protrudes in the front of the lens maintaining part 9 with switching mechanism 8.
Said lens maintaining part 9 is to fix half 12 being provided with of rear end one of inserting tube 10, simultaneously subtend is set freely in fixing half 12 movable half 13 in opening and closing near the rear end of inserting tube 10, borrow hinge to link and fix half 12 and movable half 13 lower edge, but and in fixing half 12 and movable half 13 prominent upward respectively fixation clip 15 and the dynamic pressure plate 16 established of upper limb.
In addition, by movable half 13, but hinge and dynamic pressure plate 16 constitute switching mechanism 8.When opening and closing this switching mechanism 8, movable half 13 contact fixed half 12 but dynamic pressure plate 16 contacts fixation clips 15, makes its formation and inserts 10 a co-axial tubular.
When utilizing this kind insertion utensil that deformable eyes buitin lens 1 is substituted the eyeglass insertion ophthalmic that picked-off, in switching mechanism 8 open states, intraocular lens 1 is placed the lens maintaining part 9 of the retaining member 11 that takes off from apparatus body 4, close the not busy mechanism 8 of make and break subsequently and can make intraocular lens be deformed into less shape.Keeping under this shape, but the fixation clip 15 and the major part beyond the dynamic pressure plate 15,16 of retaining member 11 is being flush-mounted in the leading section of apparatus body 4 by assembling ditch 4a, and making above-mentioned pressing plate 15,16 protrude in the top of assembling ditch 4a.
Under this state, retaining member 11 is advanced, pressing plate 15,16 is pressed into the narrow wide portion of assembling ditch 4a, and makes switching mechanism close state for 8 one-tenth, make insertion tube 10 outstanding simultaneously from the front end of apparatus body 4, can finish inserting the utensil assembling.
According to after above-mentioned assembling finishes, the operation tube 6a of cylindrical shell 6 rearward end of utensil is inserted in turn, make push-off pin 5 shift-in forward that is in going-back position, then can borrow the leading section of push-off pin 5 with intraocular lens 1, the lens maintaining part 9 of self-sustaining member 11 is released via inserting tube 10, and the otch via the about 4mm that is formed at eyeball that continues inserts intraocular lens in the eyeball, this moment, the optic 2 of intraocular lens 1 was by the former big shape that is deformed into before little shape returns to distortion by shape memory characteristic.
The apparatus body 4 of above-mentioned insertion utensil, push-off pin 5 and cylindrical shell 6 are the integrally formed product of the flexual synthetic resin of tool for 11 of metallic retaining members.
Above-mentioned traditional intraocular lens insertion makes optic be out of shape the intraocular lens of less shape with the lens maintaining part that utensil ties up to retaining member, borrows the push-off pin of ejecting mechanism to go in the eyeball via inserting a tube interpolation.But when the progressive initial stage of push-off pin, push-off pin can disturb the outstanding support sector of the optic rear side (being the rear side of retaining member 11) of lens.Because support sector, as mentioned above, be to make by hard and resilient material, so easy generation permanent deformation when being subjected to the external force such as pushing of push-off pin can't remain on institute's allocation with optic in eyeball, lose the original design function of support sector.
In order to solve this problem, though as shown in Figure 6, near the excision upper and lower part end before the push-off pin 5 is prevented that with attempt release portion from disturbing the support sector 3 of lens 1 to form the flat-shaped release 5a of portion, but if the holding position of lens 1 is equipped with slightly hold modes such as skew when bad, push-off pin still interferes with support sector 3 unavoidably.
Purpose of the present invention is inserted the shortcoming of utensil for solving above-mentioned tradition, the initial stage that provides a kind of push-off pin to advance (promptly releasing operation), can avoid push-off pin to disturb the support sector of the intraocular lens that is held in the lens maintaining part, make support sector under the situation that any distortion does not take place, lens are inserted intraocular deformable tools for inserting lens into eye.
Deformable tools for inserting lens into eye of the present invention has: can with having of forming by deformable elastomeric material the optic and this optic can being propped up of fixed memory characteristic be held in the intraocular lens distortion that intraocular support sector of being made by the pliability material that is different from this optic constitutes and become little shape, and remain in the retaining member of lens maintaining part with switching mechanism; With the above-mentioned intraocular lens that remains in the lens maintaining part, borrow push-off pin to be pushed out to intraocular ejecting mechanism; And in order to install the apparatus body of this ejecting mechanism, the lens maintaining part with switching mechanism that it is characterized in that above-mentioned retaining member is provided with one and is used for avoiding the support sector of above-mentioned intraocular lens and above-mentioned push-off pin that interferential interference takes place preventing portion.
Deformable tools for inserting lens into eye of the present invention is the lens maintaining part of retaining member, under the state that switching mechanism is opened, intraocular lens is installed, make the optic of intraocular lens be deformed into little shape by means of closing this switching mechanism, and the lens that will be out of shape is remained on this maintaining part.Because when this hold mode, by the optic of lens rearward the leading section of outstanding support sector can enter the above-mentioned interference that is arranged at maintaining part and prevent portion, therefore borrow the initial stage of the push-off pin release intraocular lens of ejecting mechanism, push-off pin can only promote optic under the state that does not contact above-mentioned support sector.So rearward Tu Chu support sector can be because of push-off pin be subjected to external force, the result can avoid deforming, i.e. not reason distortion and influence its support function of its support sector.This not only can insert it into operation smoothly, and can be safely after being inserted into and support intraocular lens unchangeably in eyeball.
The simple declaration of drawing
Fig. 1 is the part incised notch oblique view that deformable intraocular lens of the present invention inserts an embodiment of utensil;
Fig. 2 is the oblique view of the leading section of insertion utensil shown in Figure 1;
Fig. 3 is the oblique view of the retaining member of insertion utensil shown in Figure 1;
Fig. 4 is the amplification front view of an example of deformable eyes buitin lens;
Fig. 5 is the oblique view that traditional deformable intraocular lens inserts an example of utensil; And
Fig. 6 is the part incised notch oblique view of the leading section of insertion utensil shown in Figure 5.
Now illustrate that with reference to Fig. 1-Fig. 3 one embodiment of the invention are in following.
Among Fig. 1-Fig. 3,21 is retaining member.This retaining member 21 is by back cylindrical portion 22; Be formed at the lens maintaining part 24 with switching mechanism 23 of the front end of this back cylindrical portion 22; And the preceding cylindrical portion 25 that is arranged at the front end of this lens maintaining part 42 constitutes, and the front end of cylindrical portion 25 is equipped with the insertion tube 26 of convergent (push away and pull out) shape before above-mentioned; These members are configuration coaxially all.
Said lens maintaining part 24 comprises: be arranged at back cylindrical portion 22 and before between the cylindrical portion 25 and with they integrally formed fix half 27, and with this fix half 27 in pairs to be arranged at back cylindrical portion 22 reach before between the cylinder 25 movable half 28.Above-mentioned movable half 28 lower edge is to borrow hinge 29 to be connected in to fix half 27 lower edge, makes movable half 28 can fix half 27 switching operation freely to this.
Fixing half 27 and but movable half 28 upper limb is equipped with fixation clip 30 and dynamic pressure plate 31 respectively upward, and above the front end of fixation clip 30, be formed with jut 30a.Be formed with the 28a of incised notch portion in movable half 28 upper rear end in addition.But above-mentioned dynamic pressure plate 31 is the front part that only is formed on the above-mentioned incised notch 28a of portion, avoids taking place between the support sector 3 of intraocular lens and the push-off pin described later 36 interferential interference with formation and prevents portion 32.
But when closing the switching mechanism 23 that constitutes by movable half 28, hinge 29 and dynamic pressure plate 31, but dynamic pressure plate 31 is affixed by fixation clip 30, and movable half 28 be affixed by and fix half 27, thus form one with back cylindrical portion 22 and before cylindrical portion 25 concentric cylindrical body.
The back cylindrical portion 22 of above-mentioned retaining member 21 borrows to be pressed into the co-axial leading section 33a that are fixed in apparatus body 33 described later of means such as chimeric.Apparatus body 33 is by leading section 33a and than the integrally formed roughly tubular that is of the rearward end 33b in its big slightly footpath.
Have at the outer peripheral face of the rearward end 33b of apparatus body 33 to form a bit of male thread 33c, this male thread 33c and the box thread 35a of the inner peripheral surface of the operation tube 35 that is formed at ejecting mechanism 34 are screwed.Ejecting mechanism 34 contains a push-off pin 36, thereafter the end is co-axial being inserted in the operation tube 35,36 pairs of operation tubes 35 of this push-off pin can be rotated, but can not do axial moving, simultaneously with in the co-axial insertion apparatus body 33 of the leading section of push-off pin 36 and its front end to apparatus body is extended.This push-off pin 36 is to borrow not shown suitable means to stop it to apparatus body 33 rotations, and is formed with a larger-diameter release 36a of portion at its leading section.The rear end face of operation tube 35 is with suitable means blocking in addition.
The leading section 33a of apparatus body 33 and the back cylindrical portion 22 of retaining member 21 are the same external diameters of arranged coaxial and tool, form a successive barrel surface.Above-mentioned 33a and 22 is flush-mounted in transparent card to be ended in the cylindrical shell 37, it can be free to slide vertically but 33a and 22 can not rotate and can not rotate around axle between mutually.The upper front end of ending cylindrical shell 37 at card axially is formed with only ditch 37a of a card.When card ends cylindrical shell 37 and advances, but card ends ditch 37a and promptly agrees with mutually with the fixation clip 30 of retaining member 21 and dynamic pressure plate 31 and it is amplexiformed mutually and switching mechanism 23 is remained on the state of closing, when card ends cylindrical shell 37 and retreats, card ends ditch 37a and promptly removes agreeing with of pressing plate 30 and 31, and switching mechanism 23 is opened.
Retaining member 21 is to be formed by the one-body molded product with flexual synthetic resin, and apparatus body 33, operation tube 35, push-off pin 36 and card end 37 of cylindrical shells and formed by the molding product of synthetic resin respectively.
Utilize the insertion utensil of this embodiment, when inserting deformable intraocular lens shown in Figure 4 in the eyeball, at first making the push-off pin 36 of ejecting mechanism 34 and card end cylindrical shell 37 retreats, so can make the switching mechanism 23 of retaining member 21 be out state, even also movable pressing plate 31 and movable half 28 are open state.Then intraocular lens 1 is positioned over lens maintaining part 24, make diametrical position face on hinge 29 of the optic 2 of intraocular lens 1 this moment, make a support sector 3 positions in fixing half 27 side and forwards extending simultaneously, another support sector 3 positions are in movable half 28 side and extension rearward.Close switching mechanism 23 then, but make dynamic pressure plate 31 and movable half 28 be crimped on fixation clip 30 respectively and fix half 27, so can borrow movable and fix half 28 and 27 optic 2 doublings with lens 1 are bent to less shape and remain in the lens maintaining part 24.Under this state, but make card end before the cylindrical shell 37 and then will fix and dynamic pressure plate 30,31 is forced to embed card and ended in the ditch 37a and make it be limited to closure state.Continue it, the little otch of the about 4mm that is picked-off by crystal inserts the insertion tube 26 of retaining member 21 in eyeball via this otch, borrow operation tube 35 forwards that manually make ejecting mechanism 34 revolution simultaneously, so 36 of push-off pins screw togather because of the male thread 33c's of the box thread 35a of operation tube 35 and apparatus body 33, along with operation tube 35 advances.When push-off pin 36 advances, the 36a of release portion of its front end promptly touch intraocular lens 1 optic 2 and with it via preceding cylindrical portion 25, insert tube 26 certainly and release and insert in the eyeballs.Because inserting the front end of tube 26 is inserted in the eyeball by little otch, so intraocular lens 1 is released from inserting tube 26, according to memory characteristic, the distortion of its optic 2 promptly returns to shape before the flexural deformation and little big because of elastic recovering force, and borrow 3 of support sectors to be held in the eyeball, to finish the transplant operation of intraocular lens 1.
At this moment, can in inserting tube 26, advance sleekly, preferably release with lubricating fluid in order to make intraocular lens 1.
Insertion utensil of the present invention, cause is formed with the 28a of incised notch portion in movable half 28 upper rear end of the switching mechanism 23 of lens maintaining part 24, and but dynamic pressure plate 31 is not established on the top of the 28a of this incised notch portion, to serve as the portion 32 that prevents that disturbs, so in the time of in intraocular lens 1 is maintained at lens maintaining part 24, just can enters above-mentioned interference to the 3a of bent front ends portion of the outstanding support sector 3 in optic 2 rears and prevent in the portion 32.Therefore, release operation initial stage of optic 2, can avoid under the situation that support sector 3 is out of shape, only push optic 2 and be inserted in the eyeball with the 36a of release portion of push-off pin 36.Therefore, can borrow support sector 3 with optic 2 remain in really and safely fixed position.
According to this embodiment, be to make because card ends cylindrical shell 37, so when intraocular lens 1 is placed in lens maintaining part 24, can only have an X-rayed switching mechanism 23 etc. in cylindrical shell 37 outsides from card with transparent synthetic resin.Therefore, user can be confirmed the arrangement state of intraocular lens 1 in maintaining part 24 easily, thereby increases the safety and the correctness of the value of moving operation.
In addition, the retaining member 21 of formation insertion utensil, apparatus body 33, operation tube 35, push-off pin 36 and card only cylindrical shell 37 all are the molding product of synthetic resin, so insert the with low cost of utensil, after can using it are abandoned.
Above-mentioned card ends cylindrical shell 37 and needn't one be decided to be cylinder, in the bottom of cylinder total length the leading section that is installed in apparatus body after groove makes its strain is set and also can.In this occasion, but the shaping of apparatus body and retaining member one.
In the above-described embodiment, though retaining member is fixed on the leading section of apparatus body, but can retaining member not fixed yet, be about to the retaining member 11 of retaining member shown in Figure 3 21 alternate figures 5 and insertion utensil shown in Figure 6, the leading section that is installed in apparatus body 4 from the assembling ditch 4a of apparatus body shown in Figure 54 loading and unloading freely uses.In this occasion, the back cylindrical portion of retaining member 21 can be omitted.
In addition, according to the present invention, provide the portion that prevents that disturbs but also can borrow rearward end at movable half and the dynamic pressure plate of the switching mechanism that is arranged at retaining member to form the bending section that outwards bloats.
Claims (1)
1. deformable tools for inserting lens into eye has:
One has the optic of specific memory characteristic by what deformable elastomeric material was made;
Different with this optic a kind of make and this optic propped up by the pliability material be held in the intraocular lens that the used support sector of ophthalmic constitutes;
This intraocular lens distortion can be become little shape and it is remained in the retaining member that one of lens maintaining part has switching mechanism;
Be connected in the insertion tube of the front of above-mentioned retaining member;
Can the intraocular lens of portion be set with remaining in said lens, borrow push-off pin to be pushed into an intraocular ejecting mechanism from the front end of above-mentioned insertions tin; And
In order to install an apparatus body of this ejecting mechanism, it is characterized in that:
Being provided with one in the part of the lens maintaining part with switching mechanism of above-mentioned retaining member is used for avoiding the support sector of above-mentioned intraocular lens and above-mentioned push-off pin that interferential one interference that is made of incised notch portion (28a) takes place preventing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94115689 CN1080551C (en) | 1994-09-09 | 1994-09-09 | Tools for inserting deformable in-eye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94115689 CN1080551C (en) | 1994-09-09 | 1994-09-09 | Tools for inserting deformable in-eye lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1118246A CN1118246A (en) | 1996-03-13 |
| CN1080551C true CN1080551C (en) | 2002-03-13 |
Family
ID=5037624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94115689 Expired - Fee Related CN1080551C (en) | 1994-09-09 | 1994-09-09 | Tools for inserting deformable in-eye lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080551C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2822055B1 (en) * | 2001-03-16 | 2003-09-12 | Lab Contactologie Appl Lca | INTRAOCULAR LENS INJECTOR |
-
1994
- 1994-09-09 CN CN 94115689 patent/CN1080551C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1118246A (en) | 1996-03-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BLOCKBUSTER JAPAN CO., LTD. Free format text: FORMER NAME OR ADDRESS: CANON STAR CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Tokyo, Japan, Japan Patentee after: Staar Japan Inc. Address before: Tokyo, Japan, Japan Patentee before: Canonsei Co., Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Chiba County, Japan Patentee after: Staar Japan Inc. Address before: Tokyo, Japan, Japan Patentee before: Staar Japan Inc. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020313 Termination date: 20100909 |