CN101073519A - Insertion device for intraocular lens - Google Patents
Insertion device for intraocular lens Download PDFInfo
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- CN101073519A CN101073519A CN 200710105014 CN200710105014A CN101073519A CN 101073519 A CN101073519 A CN 101073519A CN 200710105014 CN200710105014 CN 200710105014 CN 200710105014 A CN200710105014 A CN 200710105014A CN 101073519 A CN101073519 A CN 101073519A
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Abstract
An insertion device for an intraocular lens is disclosed which can prevent leakage of a liquid in the device and can house and store a lens as well as the liquid. The insertion device includes a main body including a lens housing portion that houses the lens and an insertion cylindrical portion that feeds the lens into an eye, a pushing shaft that moves the lens from the lens housing portion in the front end direction to push out the lens into the eye through the insertion cylindrical portion, and a lens holding memberthat holds the lens, and is placed in the lens housing portion. The lens housing portion has a shape that receives insertion of the lens holding member from the rear.
Description
Technical field
The present invention relates to the ophthalmic insertion is inserted into the insertion utensil that ophthalmic is used with crystalline lens.This ophthalmic inserts use crystalline lens, replaces being inserted into ophthalmic because of the lens that cataract extracts, and perhaps is inserted into ophthalmic for the purpose of correcting ametropia etc.
Background technology
The main stream approach of existing cataract operation is that the central part of the preceding capsule of eyeball excises in elder generation, after with the ultrasound wave suction device muddy lens being removed, artificial ophthalmic insertion is configured in there with crystalline lens (the following crystalline lens that only is called).When crystalline lens is configured in ophthalmic, utilize this lenticular pliability, by folding the grade its distortion is dwindled, insert ophthalmic from little incision wound.
Adopt inserted utensil more in operation, this insertion utensil dwindles the crystalline lens that is seated on the apparatus body with releasing axle while moving to be out of shape in this apparatus body, from inserting the front opening that cuts the insertion tube (ozzle) in the wound, crystalline lens is released ophthalmic.This insertion utensil not only is applicable to cataract operation, and the ophthalmic that also is applicable to vision correction treatment etc. inserts with lenticular insertion performs the operation.
When adopting these to insert utensil crystalline lens insertion ophthalmic, crystalline lens moves in inserting utensil swimmingly in order to make, distortion, be injected into the visco-elastic material of hyaluronate sodium etc. as lubricant to insert in the apparatus body (referring to TOHKEMY 2004-351196 communique).Visco-elastic material passes through to insert tube and injects an ophthalmic, also has the effect that makes the anterior chamber space expansion (expansion is opened) that is inserted with lenticular eye.
The requirement of the cheap more physiologic saline for substitute visco-elastic material that also obtains easily of use is arranged recently.
But, the body that inserts utensil be constitute by some unit constructions time, for example, when the crystalline lens filling department in the body has when cutting apart structure and open-close structure, produce the gap in their combination section, the liquid of visco-elastic material or normal saline etc. can spill from this gap.This liquid that spills can make the hands of holding the insertion utensil skid, and perhaps can cause the pollution of periphery.
In addition, in operation before, liquid will be injected before operation and insert in the utensil, there is the problem of cumbersome grade in this operation, has increased operator and its assistant's burden.
In addition, even the liquid of visco-elastic material or normal saline etc. has been injected ophthalmic, but from the incision wound edge of eye and insert amount of liquid (draining to the amount outside the eye) that the gap between the tube spills for a long time, have that intraocular pressure does not increase, the anterior chamber can not expansible fully problem.
On the other hand, be injected into intrinsic lubricant from the body inner peripheral surface and release between the axle and do not spill in order to make, the perhaps resistance (sense of sliding) for the operation of releasing axle being given appropriateness is being released the elastomeric element that rubber etc. usually is installed on the axle.
In insertion utensil before, above-mentioned elastomeric element is fixed on a position or the mutual approaching some positions of releasing on the axle, moves with respect to body simultaneously with the operation of releasing axle.Therefore, when axle is released in operation, can not stop release axle with the contact position of elastomeric element and body be the center, with respect to body towards radial skew.
When the release axle tilted with respect to body, the front end of releasing axle can not contact with being arranged on intrinsic crystalline lens exactly, thereby can not rightly crystalline lens be released.
Summary of the invention
The invention provides a kind of insertion device for intraocular lens, can prevent spilling of internal liquid, can be to accommodate the keeping of liquid and lenticular state.
In addition, the invention provides a kind of insertion device for intraocular lens, the energy restricted passage is inserted a liquid that is injected into ophthalmic and is escaped to the outer amount of eye.
In addition, the invention provides a kind of insertion device for intraocular lens, can stop and release axle, can rightly crystalline lens be released with respect to the body inclination.
Insertion device for intraocular lens as a scheme of the present invention is characterized in that, has body, releases axle and crystalline lens holding member; Body has accommodates ophthalmic and inserts with lenticular crystalline lens resettlement section and crystalline lens is passed out to the insertion tube portion of ophthalmic; Release axle make crystalline lens from the crystalline lens resettlement section forward extreme direction move, by inserting tube portion crystalline lens is released ophthalmic; The crystalline lens holding member keeps crystalline lens and is configured in the crystalline lens resettlement section; Body, at least from the crystalline lens resettlement section to inserting tube portion, have the perisporium in imperforation and gap; The crystalline lens resettlement section has the shape that can accept the insertion of crystalline lens holding member from the rear.
Insertion device for intraocular lens as another scheme of the present invention is characterized in that, has the tube of insertion and releases axle; Insert the cut that tube is inserted into eyeball, the ophthalmic insertion is passed out in the eyeball with crystalline lens; Releasing axle releases this crystalline lens in the eyeball by inserting tube.Insert tube and have covering part, this covering part contacts, covers at least a portion of the cut that is inserted with this insertion tube with eyeball.
Insertion device for intraocular lens as another scheme of the present invention is characterized in that, has body, releases axle and several elastomeric elements; Insert in the body setting is had in mind and use crystalline lens; Releasing axle moves with respect to this body on the direction of crystalline lens being released ophthalmic from body.Several elastomeric elements are configured in to be released between axle and the body, and along with releasing axle with respect to the moving of body, their interval changes.
Other purpose of the present invention and feature will be clearer in the preferred embodiment of description of drawings below reference.
Description of drawings
Figure 1A is the vertical view and the side view of the insertion device for intraocular lens of the embodiment of the invention.
Figure 1B is a profile in the band nozzle body of embodiment, the crystalline lens resettlement section.
Fig. 1 C is a profile in the band nozzle body of embodiment, ozzle portion.
Fig. 2 is the band nozzle body and vertical view and the side view of release axle before assembling of embodiment.
Fig. 3 is the vertical view and the side view of the crystalline lens maintaining part of embodiment.
Fig. 4 is the vertical view and the side view of assembling sequence of the insertion utensil of expression embodiment.
Fig. 5 is the method for liquid is injected in explanation to the insertion utensil of embodiment a side view.
Fig. 6 is the method for liquid is injected in explanation to the insertion utensil of embodiment a axonometric chart.
Fig. 7 is the method for liquid is injected in explanation to the insertion utensil of embodiment vertical view and a side view.
Fig. 8 is the method for liquid is injected in explanation to the insertion utensil of embodiment vertical view and a side view.
Fig. 9 is the method for liquid is injected in explanation to the insertion utensil of embodiment vertical view and a side view.
Figure 10 is the vertical view and the side view of keeping method of the insertion utensil of explanation embodiment.
Figure 11 is the figure that expression is formed on epibulbar incision wound.
Figure 12 is expression and the vertical view and the side view of embodiment insertion utensil that make comparisons, in the comparative example.
Figure 13 is the cover ring state has been unloaded in expression from the insertion utensil of embodiment vertical view and a side view.
Figure 14 is the profile of the eyeball state of expression when adopting the insertion utensil of Figure 13 to insert crystalline lens.
Figure 15 is the profile of the eyeball state of expression when adopting the insertion utensil of embodiment to insert crystalline lens.
Figure 16 A is vertical view and a side view that expression is made comparisons with embodiment, that insert utensil in the comparative example.
Figure 16 B is the side view of ozzle portion of the insertion utensil of expression embodiment (modified example).
Figure 17 A is the profile of ozzle portion of the insertion utensil of expression embodiment (modified example).
Figure 17 B is the profile of ozzle portion of the insertion utensil of expression embodiment (modified example).
Figure 18 is the axonometric chart of ozzle portion of the insertion utensil of expression embodiment (modified example).
Figure 19 is the side view and the upward view of ozzle portion of the insertion utensil of expression embodiment (modified example).
Figure 20 is the vertical view and the side view of the insertion utensil of the existing type of expression.
Figure 21 is the side view and the vertical view of the insertion utensil (existing type) of expression embodiment.
Figure 22 is the side view and the vertical view of the insertion utensil (existing type) of expression embodiment.
Figure 23 A is the side view of the insertion utensil assembling completion status of expression embodiment.
Figure 23 B is the side view that the crystalline lens of the insertion utensil of expression embodiment is released state.
The specific embodiment
Below, with reference to accompanying drawing, most preferred embodiment of the present invention is described.
Below, with reference to the description of drawings embodiments of the invention.
Figure 1A represents that the ophthalmic of the embodiment of the invention inserts the insertion utensil with crystalline lens (the following crystalline lens that only is called).The figure of upside is a vertical view among Figure 1A, and the figure of downside is a side view.Fig. 2 represents to release axle and is assembled into state before inserting on the apparatus body.The figure of upside is a vertical view among Fig. 2, and the figure of downside is a side view.In the following description, the ozzle side is called front or the place ahead, the ozzle opposition side is called rear end side or rear.The direction of extending between front and rear end side is called axially, calling above-below direction or left and right directions or radially with axial orthogonal direction.In addition, call central shaft by the inner space of band nozzle body or the axle at crystalline lens center, the peripheral direction of this central shaft is called circumferentially being parallel to axially.
Inserting utensil 2 is made of the body (following is called body) 12 and the release axle 16 of band ozzle basically.Body 12 has as the 12a of urceolus portion, the crystalline lens resettlement section 12b of Handheld Division with as the 12c of ozzle portion that inserts tube portion.The 12a of urceolus portion has the external diameter that is suitable for hand-held insertion utensil 2.Crystalline lens resettlement section 12b is located at the front of the 12a of this urceolus portion, accommodates crystalline lens holding member 28 described later.The 12c of ozzle portion is located at the front of this crystalline lens resettlement section 12b.This body 12 is monolithic molding parts.Rear portion at the 12a of urceolus portion has formed flange part 12d, and this flange part 12d is the part that supports with hands when releasing the push operation of axle 16.
The 12a of urceolus portion, the part in position from its front end to flange part 12d and the 12a of urceolus portion has the 1st inner peripheral surface 12g of drum.At the rear of the 1st inner peripheral surface 12g, formed cylindrical shape the 2nd inner peripheral surface 12m that internal diameter is slightly smaller than the 1st inner peripheral surface 12g.At the rear of the 2nd inner peripheral surface 12m, formed the taper seat 12f that the distolateral expansion of internal diameter is opened backwards.At the rear of taper seat 12f, until open rearward end 12i place has formed cylindrical shape 3rd inner peripheral surface of internal diameter greater than the 1st inner peripheral surface 12g.
The 12c of ozzle portion has the interior external diameter shape that diminishes gradually of extreme direction forward, and the part from front opening 12j to predetermined length is the thinnest part among the 12c of ozzle portion as the ophthalmic insertion portion by epibulbar incision wound insertion ophthalmic.In the rear end of this ophthalmic insertion portion periphery, the cover ring of being made by elastomeric elements such as rubber (O shape ring) 13 is installed.The rear side of the cover ring 13 on the 12c of ozzle portion has formed the stage portion 12c1 of external diameter greater than insertion portion, and this stage portion 12c1 stops cover ring 13 to move towards the rear.Function about cover ring 13 will illustrate below.
From axially, the section configuration of crystalline lens resettlement section 12b is the hollow tabular of the size of above-below direction greater than lateral dimension basically.But, with the boundary of the 12a of urceolus portion near be rear portion below the 12b of crystalline lens resettlement section, to have formed diameter in order gaining in strength and to have become big half-conical shape towards the rear.In addition,, the 12a of urceolus portion is done flue with the seam that is connected of crystalline lens resettlement section 12b inner face, like this, when the insertion of holding member 28, exist guide shape, can easily insert for crystalline lens resettlement section 12b is inserted from open rearward end 12i.
Crystalline lens resettlement section 12b, have can from its rear end accept the insertion of crystalline lens holding member 28 and can stably keep inserting after the interior shape of crystalline lens holding member 28.
Figure 1B and Fig. 1 C represent the section of the axle orthogonal direction of crystalline lens resettlement section 12b and the 12c of ozzle portion respectively.As shown in the figure, perisporium 12b1, the 12c4 from crystalline lens resettlement section 12b to the 12c of ozzle portion is the integral wall that does not have opening and gap.In other words, surround its inner space around (up and down) wall circumferentially be successive, form as a wholely, do not have the opening in hole etc. or can produce the divisible or to be opened/closed position in gap in the combination section.
In the present embodiment, illustrated that body 12 is monolithic molding product, perisporium 12b1, the 12c4 from crystalline lens resettlement section 12b to the 12c of ozzle portion do not have opening or gap at least, but the present invention is not limited thereto.For example, also can be joined together the parts that from the front end to the rear end, are divided into two up and down with thermal weld or bonding mode, constitute body 12, make it integrated, after finishing (crystalline lens holding member 28 insert before) as body 12, with formation at least on the perisporium of crystalline lens resettlement section 12b and the 12c of ozzle portion the mode of global facility very close to each other etc. make.In addition, also can be with thermal weld or bonding mode, crystalline lens resettlement section 12b, the 12c of ozzle portion and the 12a of urceolus portion that to cut apart formation engage, finished body 12 back (crystalline lens holding member 28 insert before), made in the mode that forms at least the global facility of grade very close to each other on from crystalline lens resettlement section 12b to the perisporium of the 12c of ozzle portion.
Shown in the dotted line in Figure 1A vertical view, near the perisporium the 12a of the urceolus portion front end, formed aperture 12h.This aperture 12h is when making body 12, when using the integrally formed body 12 of resin, the hole that must form in order to dispose support component, and this supporting units support is used to form the mould of body 12 inner faces.
In the present embodiment, in order to block this hole 12h fully, the O shape ring of being made by elastomeric elements such as rubber 32 has been installed in the periphery of the 12a of urceolus portion.Like this, on body 12, except the front opening 12j of the open rearward end 12i of the 12a of urceolus portion and the 12c of ozzle portion, there is not other opening.Therefore, as described later, with being located at the seal cover of releasing on the axle 16 14 open rearward end 12i is seamlessly blocked, and, with lid 34 described later front opening 12j is seamlessly covered, like this, in body 12, formed airtight space, can accommodate with not leaking visco-elastic material or normal saline etc. liquid, it is taken care of with crystalline lens 1.
The installed surface of O shape on the 12a of urceolus portion outer peripheral face ring 32, diameter is little than its front and rear end side, like this, can stop O shape to encircle 32 and move axially in urceolus portion 12a upper edge.The position that is provided with of this O shape ring 32 is hand-held maximum positions of hands contact of inserting the operator of utensil 2.Therefore, O shape ring 32 not only has the function of blocking hole 12h, holds the function that the hands that inserts utensil 2 is not easy to skid but also have to make.But,,, just no problem in function aspects as long as flowing of liquid directly do not influenced even do not block hole 12h.
Crystalline lens holding member 28 has the 1st holding member 28A and the 2nd holding member 28B.The 1st holding member 28A supports crystalline lens 1 from downside.The 2nd holding member 28B is assembled on the 1st holding member 28A, pushes crystalline lens 1 from upside.
The structure of the crystalline lens 1 that is being kept by the crystalline lens maintaining part is described earlier.Crystalline lens 1 is made of optic 1a and support portion 1b, and optic 1a sees it is circular from above, have as lenticular function.Support portion 1b stretches out from the front of this optic 1a and the part of rear end side.
Around optic 1a, formed cyclic, as to have the top and bottom that are parallel to each other edge part 1c.
As shown in Figure 3, except a part, the 1st holding member 28A forms the symmetrical shape with respect to central shaft CA, and this central shaft CA is by the center O of the optic 1a of crystalline lens 1.About the bottom of the 1st holding member 28A, formed supporting surface 28a.This supporting surface 28a is the inclined-plane that tilts, and the inboard of its left and right directions reduces ground than the outside and tilts.
In the vertical view of Fig. 3, position (position on the central shaft CA) among the 1c of lens edge portion, from the center O of optic 1a to preceding extreme direction as 0 ° of position.About supporting surface 28a, (be called 60 ° of positions with position among the 1c of lens edge portion, retreat 60 ° of circumferential angles towards circumferential both sides from 0 ° of position, down with) and the circular arc zone that retreats between 90 ° of positions of 90 ° join, from this circular arc zone of supported underneath.
In addition, about the axial pars intermedia of the 1st holding member 28A, formed supporting projections 28b.This supporting projections 28b is supporting the rear in circular arc zone among the 1c of lens edge portion, that supported by supporting surface 28a, promptly from the circular arc zone between ° position, 135 ° of positions to 165.Space between the two supporting projections 28b is to release the space that axle 16 (pushing axial region 16c) passes through.Because this space is 30 ° a angular range, so, can think that also 180 ° of positions that two supporting projections 28b are supporting with the 1c of lens edge portion are the circular arc zone of 90 ° of angular ranges at center.That is, the 1c of lens edge portion is being supported at 3 positions at the 1st holding member 28A 120 ° of intervals of 60 ° of positions and 180 ° of positions about comprising.
Each supporting projections 28b has mounting and the horizontal plane of the 1c of lens edge portion is arranged and joins or approaching vertical at the rear of this horizontal plane and the peripheral end face of the 1c of lens edge portion, from the supported underneath lens edge 1c of portion, stop crystalline lens 1 to move towards the rear simultaneously.
In addition, about the front of the 1st holding member 28A, formed vertical 28e.60 ° of positions in this vertical 28e and the 1c of the lens edge portion peripheral end face join or are approaching.This vertical 28e, under the state before the release of crystalline lens 1, prevention optic 1a extreme direction forward moves.
Formed from the right side towards the left side arm 28c that (Fig. 3 vertical view from the downside to the upside) extends in the upper front end of the 1st holding member 28A.Left end at this arm 28c has formed the projection 28d that supports front support portion 1b from downside, and this projection 28d extreme direction forward stretches out.
At the rear portion of the 1st holding member 28A, formed the inclined-plane 28f that supports rear side end support portion 1b from downside, this inclined-plane 28f rises more to rear end side more.
Below, the structure of the 2nd holding member 28B is described.The 2nd holding member 28B is configured in the upside of the 1st holding member 28A.The the 1st and the 2nd holding member 28A, 28B are inserted in the 12b of crystalline lens resettlement section with the state that is keeping crystalline lens 1, like this, owing to be sandwiched between this crystalline lens resettlement section 12b interior end face and bottom surface, so can not be held to the changing of the relative positions mutually.
The 2nd holding member 28B forms with respect to the symmetrical shape of central shaft CA (figure does not show).Formed push projection 28g about below the 2nd holding member 28B.Among this push projection 28g and the 1c of lens edge portion, from about between ° position, 90 ° of positions to 120 the circular arc zone and join from the circular arc zone between ° position, 135 ° of positions to 165 or approaching.Clip to form between the left and right sides push projection 28g of 180 ° of positions and release the space that axle 16 (pushing axial region 16c) passes through.The front part of push projection 28g, push from the top the 1c of lens edge portion, with the circular arc zone that is located at the rear, circular arc zone that the supporting surface 28a on the 1st holding member 28A joins.The rear end side part of push projection 28g, push from the top the 1c of lens edge portion, by being located at supporting projections 28b on the 1st holding member 28A from the circular arc zone of supported underneath.
Shown in the side view of Fig. 3, the 2nd holding member 28B is assembled in the upside of the 1st holding member 28A, in the 1c of lens edge portion, from supported underneath by the supporting surface 28a of the 1st holding member 28A from the circular arc zone between ° position, 60 ° of positions to 90, push from the top from the circular arc zone between ° position, 90 ° of positions to 120 by the front of the push projection 28g of the 2nd holding member 28B part.In addition, from the circular arc zone between ° position, 135 ° of positions to 165, by horizontal plane that is located at the supporting projections 28b on the 1st holding member 28A and the rear end side part that is located at the push projection 28g on the 2nd holding member 28B, keep in the mode of clamping from above-below direction.By such maintenance structure, the optic 1a of crystalline lens 1 keeps level, and the state of the substantial stress that produces with do not conducted oneself with dignity or external force etc. is supported.
Here said optic 1a to crystalline lens 1 is the state of applied stress not in fact, just to the optic state of applied stress not fully, has not also comprised the state that the minimal stress effect is arranged.The degree of this minimal stress is even take care of crystalline lens 1 for a long time in hold mode, also not produce the influential distortion of optical effect to the optic 1a behind the insertion ophthalmic.In other words, refer to the stress that the optical function to optic 1a exerts an influence and the state of distortion of not producing.
By and the 1c of lens edge portion peripheral end face in the vertical 28e that joins of 60 ° of positions and and the vertical of the supporting projections 28b that joins from the scope between ° position, 135 ° of positions to 165, the extreme direction forward of crystalline lens 1 and dislocation towards the rear are prevented from.And, since about vertical 28e be located at 60 ° position, so the front of the 1c of lens edge portion is 120 ° a open state.Therefore, when the release of crystalline lens 1, can make crystalline lens 1 from crystalline lens holding member 28 swimmingly forward extreme direction move.
In addition, rear on the push projection 28g of the 2nd holding member 28B, that push the part of the 1c of lens edge portion has formed rake.This rake is parallel to the inclined-plane 28f of the 1st holding member 28A, and clips rear end side support portion 1b between this inclined-plane 28f.In addition, the vertical 28e of the 1st holding member 28A is along the lateral surface extreme direction extension forward of front support portion 1b.By this vertical 28e and front support portion 1b join and by the rake of inclined-plane 28f and push projection 28g to the sandwiching of rear end side support portion 1b, the rotation of crystalline lens 1 is prevented from.
In addition, in the present invention, the shape of crystalline lens holding member is not limited to above-mentioned shape, if can with to optic in fact not the state of applied stress keep crystalline lens.In addition, about crystalline lens, also not limiting is the form with optic and wire support portion, also can be the form with optic and tabular support portion.
Figure 20 represents the insertion utensil of existing type.The figure of upside is a vertical view, and the figure of downside is a side view.This inserts the body 112 of utensil 102, is made of several parts that comprise urceolus 112a, are assembled in the crystalline lens holding member 112b of this urceolus 112a front end and are assembled in the ozzle 112c on the crystalline lens holding member 112b in the following forward-facing square mode of extending from crystalline lens holding member 112b.On crystalline lens holding member 112b, form opening 112h, crystalline lens 1 has been loaded into the inside of crystalline lens holding member 112b by this opening 112h.The cover 124 of blocking opening 112h is installed on crystalline lens holding member 112b.
On the insertion utensil 102 of this existing type, gapped in the combination section of above-mentioned several parts.In addition, on the crystalline lens holding member 112b corresponding, formed the 112h that opens that is used to load crystalline lens 1, promptly used cover 124 to cover, also existed from this opening 112h by gap to the outside with the crystalline lens resettlement section 12b of present embodiment.
Therefore, when injecting the liquid of visco-elastic material or normal saline etc. in the body 112, liquid just spills from the gap.Especially the normal saline that the viscosity ratio visco-elastic material is low begins to leak once injecting, the liquid of the aequum that is not easy to keep in body 112 to perform the operation.In addition, the viscosity of visco-elastic material is big, though its leakage rate is few,, the hands of holding insertion utensil 102 is skidded, so, preferably do not leak.
As Figure 1A and shown in Figure 2, release axle 16 from distolateral thereafter, have D notched cut axial region (D カ Star ト Shaft portion) 16a, cylindrical portion 16b and pushing axial region 16c.D notched cut axial region 16a is that plane non-rotating symmetric shape is cut on the top of circle from axially seeing its section, promptly so-called D font cutting shape.O shape ring (the 2nd elastomeric element of being made by elastomeric elements such as rubber) 43 is installed on D notched cut axial region 16a, and this O shape ring 43 can move vertically with respect to this D notched cut axial region 16a.
The external diameter of cylindrical portion 16b is equal to or less than the drum part of D notched cut axial region 16a, and the seal cover of being made by elastomeric elements such as rubber (the 1st elastomeric element) 14 is installed in the periphery of this cylindrical portion 16b.Seal cover 14 has the ring part 14a that is installed on the cylindrical portion 16b and from the front end of this ring part 14a conus portion 14b that diminishes of extreme direction diameter forward.At the front end of conus portion 14b, formed the hole of passing through for pushing axial region 16c.
Pushing axial region 16c has the tiny external diameter that can pass through the internal path of the 12c of ozzle portion, is provided with the crystalline lens handle part 16d that is divided into two bursts of shapes up and down at its front end.Crystalline lens handle part 16d is from the rear end of the optic 1a that clamps the crystalline lens 1 that is being kept by crystalline lens holding member 28 up and down in the 12b of crystalline lens resettlement section.Like this, can be with releasing axle 16 with the extreme direction release forward effectively of this crystalline lens 1.
At this, on the insertion utensil of the existing type that is representative with insertion utensil shown in Figure 20, releasing the ring that the axle periphery also is installed with rubber system, this rubber ring is along with releasing moving of axle, slides with respect to the inner face of body.But the purpose of this rubber ring is the slip sense (operation resistance sense) of the operation of releasing axle being given appropriateness, does not have the sealing function that prevents leak of liquid in the body.
And the seal cover 14 of present embodiment, its main purpose is a sealing function, with realizing that the crimp force of sealing function is crimped on the inner peripheral surface of body 12, feels thereby also paid to slide.
In the present embodiment, in order to realize the sealing function, the axial width dimension of ring part 14a in the seal cover 14 is set at more than the 2mm, in addition, for fear of liquid from ring part 14a and release clearance leakage between the cylindrical portion 16b of axle 16, be provided with conus portion 14b in the front of ring part 14a.In the present embodiment, state before the push operation of releasing axle 16 shown in Figure 1A (assembling be over state or keeping state), the internal diameter of the 2nd inner peripheral surface 12m of ring part 14a crimping in body 12 inner peripheral surfaces, sealed lid 14 is littler than the internal diameter of the 1st inner peripheral surface 12g of its front.Set the internal diameter of the 2nd inner peripheral surface 12m little, can improve and the ring part 14a of seal cover 14 between crimp force, can improve sealing function.That is, as described later, the liquid that is infused in the body 12 is not taken care of with leaking inserted utensil 2.Body inner peripheral surface 12g, 12m are preferably circular.
The outer peripheral face of the ring part 14a of seal cover 14 can be simple barrel surface, still, in order to improve sealing function, also can be designed to have the annular shape of semi-circular cross-section, perhaps axial design several should the annular shape.
As previously mentioned, at the front end of releasing axle 16, be provided with the crystalline lens handle part 16d of the optic 1a top and bottom of clamping crystalline lens 1, when releasing state that axle 16 rotated with respect to body 12 and carry out push operation, can not push optic 1a exactly with crystalline lens handle part 16d.For this reason, before the push operation of releasing axle 16, must stop and release axle 16 with respect to body 12 rotations.And, before push operation or after push operation begins, deviate from body 12 if release axle 16, to release to differ when axle 16 insert body 12 again after then and insert rightly surely, so, must prevent that it from deviating from.From this point, the function that the release axle 16 of insertion utensil 2 will possess is different with the simple sealing function that general syringe is required.
For this reason, in the present embodiment, as previously mentioned, setting the internal diameter of the 2nd inner peripheral surface 12m little, like this, the ring part 14a of seal cover 14 and the crimp force of the 2nd inner peripheral surface 12m, is that frictional force increases, utilize this point, can prevent to release axle 16 with respect to body 12 rotations or deviate from.
In addition, in the present embodiment, the friction of the crimping generation that utilizes seal cover 14 and body 12 has been described, restriction release axle 16 rotates with respect to body 12 or deviates from.But, also can other method limit the rotation of releasing axle or deviate from.For example, can on body 12, form the similar interior all shapes of peripheral shape to the D notched cut axial region 16a that releases axle 16, utilize their the joining of planar portions, stop and release axle 16 rotations with respect to body 12.In addition, also can make the stage portion that produces between D notched cut axial region 16a and the cylindrical portion 16b (seal cover 14), join, so also can stop release axle 16 from body 12, to be deviate from the abutted surface that is formed on the body 12.
Relation between seal cover 14 in the present embodiment and body 12 inner peripheral surfaces, as shown in figure 21, also applicable to the insertion utensil that has type now.(figure of upside is a side view at Figure 21, the figure of downside is a vertical view) in, the double seal ring 44 corresponding with the seal cover 14 of present embodiment is set releasing on the axle 116, makes by the inner peripheral surface internal diameter of the part of the rearward end inner peripheral surface of body 112 double seal ring 44 of state (assembling be over) crimping less than its front.
Below, the assembling sequence of the insertion utensil 2 of this structure is described with Fig. 4 (figure of upside is a vertical view, and the figure of downside is a side view).Earlier crystalline lens 1 is remained on the crystalline lens holding member 28.Then, O shape ring 32 and cover ring 13 are installed in the periphery of the 12a of urceolus portion and the 12c of ozzle portion of body 12 respectively.But,, staggered in O shape ring 32 and the position of blocking hole 12h if after assembling, will use hole 12h when injecting liquid in the body 2.
Crystalline lens holding member 28 is inserted in the crystalline lens resettlement section 12b from the rear by open rearward end 12i.Be inserted into the crystalline lens holding member 28 in the 12b of crystalline lens resettlement section,, almost do not have at circumferential and axial with rocking and keeping by joining of its outside and this crystalline lens resettlement section 12b inner face.
Then, the release axle 16 O shape ring 43 and seal cover 14 are installed inserts in the body 12 from open rearward end 12i.Release axle 16 and be inserted into the interior crystalline lens 1 of its crystalline lens handle part 16d arrival crystalline lens resettlement section 12b degree of side after a while always.At this moment, the ring part 14a outer peripheral face of seal cover 14 is crimped on the 2nd inner peripheral surface 12m of the 12a of urceolus portion, realizes that above-mentioned sealing function and inhibition rotate/deviate from function.
In addition, O shape ring 43 and the taper seat 12f that is formed on week in the 12a of urceolus portion are joined.Effect about O shape ring 43 will be described hereinafter.
As described later, to the above-mentioned insertion utensil 2 that assembles like that, the liquid of the visco-elastic material of injection hyaluronate sodium etc. or normal saline (also comprising the water that has dissolved medicament) etc.About the method for implanting of this liquid, will illustrate below.In addition, the liquid of injection except hyaluronate sodium or normal saline, can also be hydrophilic (water solublity) macromolecular liquid.For example, having of synthetic high polymer, Polyethylene Glycol (PEG), polypropylene glycol (PPG), sodium polyacrylate (PAA), polyacrylamide (PAAm), kayexalate (PSSNa), polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), polymine (PEI), carboxymethyl cellulose (CMC), dextran sulfate sodium, carboxyethyl starch (HEPES), polyphosphoric acid etc.
In addition, in natural polymer, in polysaccharide, can enumerate hyaluronic acid and/or hyaluronate sodium (HA), sodium alginate, glucosan, dextrin, heparin, chitosan, sodium chondroitin sulfate, can enumerate polypeptide, polynucleic acid etc. beyond the polysaccharide.
From the considerations such as multiformity of human body adaptability, the molecular weight that obtains, preferably adopt the liquid of polysaccharide.
Below, illustrate the liquid of the low normal saline of viscosity ratio visco-elastic material etc. is injected several method in the body 12.
Fig. 5 represents first kind liquid inpouring method.The liquid of putting into syringe 35, inject by the entry needle in the front opening 12j that is inserted in the 12c of ozzle portion.At this moment, enter easily in the front opening 12j in order to make entry needle, can guiding part 30 be installed on the 12c of ozzle portion, this guiding part 30 directs into front opening 12j with entry needle.In addition, at this moment O shape is encircled the 32 hole 12h that block on the body 12.
Because the opening of not opening towards the outside except front opening 12j on the body 12 is so even with front opening 12j down, the liquid that are injected in the body 12 also can spill hardly.This point in the liquid inpouring method of the following stated too.
Fig. 6 represents second kind liquid inpouring method.In advance liquid is put into containers such as beaker 36 after the sterilization, the 12c of ozzle portion is being inserted under the intravital state of liquid, will release axle 16 and rearward draw.Because body 2 is airtight except front opening 12j, so, with syringe similarly, liquid can be injected in the body 2.
The crystalline lens handle part 16d that releases axle 16 must be inserted into the side after a while of the crystalline lens 1 that arrives in the crystalline lens resettlement section 12, could push lens optic effectively with this position relation.For this reason, in order similarly to inject liquid with syringe, become twin shaft releasing axle, do not having on release axle crystalline lens handle part 16d, with closure 14 the hole to be set, portion's assembling within it has the release axle 16 of crystalline lens handle part 16d.Then, be fixed under the state of this position, the release axle that seal cover 14 is arranged is drawn toward the rear with the release axle 16 that has crystalline lens handle part 16d.Like this, make the crystalline lens handle part 16d that releases axle 16 be fixed on location after a while in the crystalline lens resettlement section 12, similarly can inject liquid with syringe.
Fig. 7 represents the third liquid inpouring method.Hole 12h on O shape ring 32 and the body 12 is staggered, the pin of syringe 35 or fluid Supplying apparatus are inserted in the 12h of this hole, liquid is injected in the body 12.Then, mobile O shape ring 32 makes it block hole 12h.For the insertion of the front end that makes pin or fluid Supplying apparatus is more prone to, on the outer peripheral face that is provided with hole 12h, horn mouth is set, play the guide function when inserting, use convenient.
Fig. 8 represents the 4th kind liquid inpouring method.In the method, adopt the thromboembolism (lid) 33 of the elastomeric element system in the embedded hole 12h to replace O shape ring 32.With syringe 35 be needled into thromboembolism 33, the liquid in the syringe is injected in the body 12.Thromboembolism 33 utilizes its elasticity and hole after making entry needle extract is closed automatically, so can prevent leak of liquid.In addition, be not easy from the 12h of hole, to deviate from, can do a little improvement the shape of thromboembolism 33 in order to make thromboembolism 33.For example, part on the thromboembolism 33, embedded hole 12h, become the past downside shape of chap gradually.In addition, also can be bonded in thromboembolism 33 on the body 12.
Fig. 9 represents the 5th kind liquid inpouring method.With the 3rd kind of method similarly, in the pin of syringe 35 or fluid Supplying apparatus patchhole 12h, liquid is injected in the body 12.Then,, make it block hole 12h, liquid is not spilt from hole 12h lid (thromboembolism) 33 ' be installed on the body 12.Cover 33 in order to make ' be not easy from the 12h of hole, to deviate from, can to cover 33 ' shape do a little improvement.For example, lid 33 ' on, the part of embedded hole 12h, become toward the downside shape of chap gradually.In addition, also can the lid 33 ' be bonded on the body 12.
But,, only otherwise directly influence flowing of liquid, then do not have special problem even do not use thromboembolism 33 or O shape ring 32.
According to above-mentioned liquid inpouring method, before operation or before inserting utensil and dispatching from the factory, can simply liquid be injected in the body 2.If before dispatching from the factory, inject liquid, dispatch from the factory then, transport, keeping, in order to prevent that leak of liquid also can be enclosed within lid shown in Figure 10 34 on the 12c of ozzle portion to outside in the meantime.
During operation, cover 34, then it is taken off, the front end of the 12c of ozzle portion (ophthalmic insertion section) is inserted ophthalmic from epibulbar incision wound if be installed with.Then, will release axle 16 pushes with respect to body 12.Like this, the liquid in the body 12 begins to inject ophthalmic from the front opening 12j of the 12c of ozzle portion, in addition, has been clamped the crystalline lens 1 of optic 1a by crystalline lens handle part 16d, and beginning forward from crystalline lens holding member 28, extreme direction moves.Crystalline lens 1 moves on one side distortion on one side with being folded and dwindles in the 12c of ozzle portion, 12j is pushed out into ophthalmic from front opening.
Owing to from the 12c of ozzle portion liquid is injected ophthalmic, so intraocular pressure rises, the anterior chamber is expanded, and like this, can form the insertion space of crystalline lens 1.But, as shown in figure 11, under the state in the incision wound 15a that the 12c of ozzle portion has been inserted on the eyeball 15, because it is bigger than the 12c of ozzle portion to cut the area of wound 15a, so, between the outer peripheral face of the edge of wound 15a and the 12c of ozzle portion, produced gap (zone outside the 12c of ozzle portion) 20.Therefore, the liquid that flow into ophthalmic flows out from this gap 20, when especially the amount of the liquid in injecting body 12 is not many (for example about 0.5～2.5ml), intraocular pressure is risen, and the anterior chamber is fully expanded.
For this reason, in the present embodiment,, can cover the gap 20 in the wound 15a with being located near the 12c of the ozzle portion front end cover ring 13 by being pressed on the eyeball 15.At this moment, can gap 20 be covered (blocking) fully, a part that also can a coverage gap 20 with cover ring 13.Like this, can limit 20 the outflow of (stop or reduce discharge) liquid,, intraocular pressure is risen, the anterior chamber is fully expanded even be infused in the amount of liquid not many (even a small amount of) in the body 12 from the gap.In addition, if when intraocular pressure rises too high, as long as will insert utensil 2 toward the rear changing of the relative positions, make cover ring 13 leave eyeball 15, just can make gap 20 outflows of liquid from original size, can reduce intraocular pressure.
Like this,, only need the operation at hand of operator, just can carry out the ophthalmic insert action of crystalline lens 1, also can control intraocular pressure simultaneously according to present embodiment.
In addition, in the present embodiment, for the gap 20 among incision wound 1 5a that covers eyeball 15, be adopt the parts that separate with the 12c of ozzle portion, be cover ring 13.But, also can on the 12c of ozzle portion, form the annular shape portion that same purpose is arranged with cover ring 13.
Below, illustrate to cover ring 13 and have with it same purpose cover ring shape portion function experimental result and with the optimized experimental result of front end shape of the 12c of ozzle portion.
Experiment 1: at first, shown in Figure 12 (figure of upside is a vertical view, and the figure of downside is a side view), the device 19 of supplying with physiological saline and so on liquid by pipe 18 and insertion utensil 2 ' be connected, is experimentized.At this moment, insert utensil 2 ' on, cover ring 13 or the shape suitable with it are not set.In addition, release axle 16 ' inside the stream that liquid passes through is set, will manage 18 be connected this release spools 16 ' on.
When fluid Supplying apparatus 19 was injected in the eyeball by inserting utensil 2 ' (12c of ozzle portion) continuously, intraocular pressure rose with liquid, and liquid has been full of in the anterior chamber, and capsule is towards vitreous body one side shifting (anterior chamber is expanded) behind the lens.Like this, can be when fluid Supplying apparatus 19 is supplied with eyeball continuously,, also no problem even cover ring 13 or the shape suitable with it are not set on the 12c of ozzle portion with predetermined amount of liquid.
Experiment 2: as shown in figure 13, be used in the insertion utensil 2 that has injected 25ml liquid in the body 12 in advance, experimentize.In this experiment, cover ring 13 or the shape suitable with it are not set on the 12c of ozzle portion.At this moment, will release axle 16 and push, even the almost whole liquid in the body 12 are injected ophthalmic, the intraocular pressure when intraocular pressure cuts wound with formation is compared also and is raise hardly, and capsule is not also towards the vitreous body side shifting behind the lens.The reason that intraocular pressure does not rise is, is to be cut into by knife to be wire owing to cut wound, when inserting the spatial ozzle 12c of portion wherein, has formed gap shown in Figure 11 20, and as shown in figure 14, liquid L spills from this gap 20.
Experiment 3: cover ring 13 is installed on the 12c of ozzle portion of the insertion utensil 2 that uses in experiment 2, as shown in figure 15, near the part the incision wound 15a on cover ring 13 and the eyeball 15 is connected airtight, carried out and experiments that experiment 2 is same.At this moment, intraocular pressure rises, and capsule is towards the vitreous body side shifting behind the lens.This be because, though the outside of the 12c of ozzle portion in cutting wound 15a has formed gap 20, but since the incision wound 15a on cover ring 13 and the eyeball 15 around connect airtight, even liquid 20 flows out from the gap, the bezel ring, 13 that also is covered seals up and does not leak into the outside.Especially because the section of cover ring 13 is circular, so in the form of a ring the line on every side of the incision wound 15a on cover ring 13 and the eyeball 15 contacts.Therefore, compare with contacting when sealing, can be more prone to obtain practical sealing effectiveness with face.
As previously mentioned, on the 12c of ozzle portion, stage portion 12c1 is set, can stops cover ring 13 on the 12c of ozzle portion, to move towards the rear.In addition, allow that cover ring 13 tilts at the 12c of ozzle portion, can stably keep the tightlock status of cover ring 13 and eyeball 15.
Experiment 4: as shown in figure 16, on the 12c of ozzle portion, formed the 12c2 of annular shape portion with cover ring 13 roughly the same shapes, carried out the experiments same with experiment 2,3.At this moment, because the 12c2 of annular shape portion does not almost have flexibility, so, though the part of the 12c2 of annular shape portion can be connected airtight with eyeball 15, but other parts can not be connected airtight with eyeball 15, and liquid escapes to the outside from the gap between eyeball 15 and the 12c2 of annular shape portion.Therefore intraocular pressure rises hardly.
But, shown in Figure 16 B, to be set at thickness be about 0.3mm and shape with flexibility with the 12c3 of annular shape portion (cover ring shape portion), like this, the full Zhou Nengyu eyeball 15 of this cover ring shape 12c3 of portion connects airtight, and can obtain the effect same with cover ring 13.
Experiment 5: Figure 17 A, 17B represent the section shape of the 12c of ozzle portion of the insertion utensil of use in this experiment.As shown in figure 11, when the 12c of ozzle portion of circle or oval-shaped profile is inserted incision wound 15a, cut wound 15a flare up and be similar to rhombohedral shape.Between the edge part of 12c of ozzle portion and wound 15a, formed subtriangular gap 20.
", the 12c ' of this ozzle portion, 12c " cut with convex form that can coverage gap 20 covers shape 12c4,12c5 for this reason, in this experiment, to have made the 12c ' of ozzle portion, 12c, carries out the experiments same with experiment 2～4.At this moment, the 12c ' of ozzle portion, 12c " and produce very little gap or produce the gap hardly between the edge part in the incision wound 15a, so liquid seldom or hardly leaks from the leakage of eyeball 15, intraocular pressure rises.
Like this and since ozzle portion itself become can coverage gap 20 shape, so, can obtain and same sealing effectiveness when cover ring 13 or the cover ring shape 12c3 of portion are set on the 12c of ozzle portion.
In addition, if in ozzle portion, cover ring 13 or the cover ring shape 12c3 of portion are set again, then can obtain higher sealing effectiveness with convex form cut covering shape 12c4,12c5.
Experiment 7: as test 3 and experiment 4, by cover ring 13 or the cover ring shape 12c3 of portion are set on the 12c of ozzle portion, intraocular pressure is risen, but under situation about rising so high on the intraocular pressure, then preferably be provided for regulating the structure of intraocular pressure.
In this experiment, as shown in figure 18, front on the 12c of ozzle portion, cover ring 13 or the cover ring shape 12c3 of portion is provided with the opening in hole 37 or slit 38 etc.In addition, be provided with oblique shape portion 39 at the front end of the 12c of ozzle portion.
When intraocular pressure excessively raises, to insert utensil 2 and leave eyeball slightly, the part of hole 37, slit 38 or oblique shape portion 39 is exposed to outside the eye, like this, flow to the liquid of front opening 12i of the 12c of ozzle portion and the liquid of ophthalmic from body 12, be discharged to outside the eye from these hole 37 grades.Like this, can easily carry out intraocular pressure regulates.
When intraocular pressure is excessively reduced and when need improving intraocular pressure,, make cover ring 13 or cover the shape 12c3 of portion and eyeball connects airtight and gets final product as long as make hole 37 grades be positioned at ophthalmic.
Experiment 8: when the 12c of ozzle portion is inserted the incision wound of wire, do not open because intraocular pressure is also low, cut wound, so, even the front end of the 12c of ozzle portion forms oblique shape to a certain degree, also be not easy to insert.For the 12c of ozzle portion easily being inserted the incision wound of wire, just the front end with the 12c of ozzle portion forms over-drastic oblique shape, then can produce the moving resistance (frictional resistance) of crystalline lens 1 in the 12c of ozzle portion increase, to crystalline lens 1 can overaction the harm of load etc.
For this reason, the front end shape of the 12c of ozzle portion has been done all changes, tested.Shape shown in a kind of Figure 19 of being wherein (figure of upside is a side view, and the figure of downside is a upward view).In Figure 19, earlier oblique shape portion 41 is set at the leading section downside of the 12c of ozzle portion.Perisporium the rear end from the front end (front end of the 12c of ozzle portion) of this oblique shape portion 41 to this oblique shape portion 41 is called front end circumferential wall T.To become the conical surface 40 of inclination full week of this front end circumferential wall T, this conical surface 40 is more than 10 degree along the direction that front end attenuates with respect to the angle of more leaning on the perisporium at rear to tilt than this front end circumferential wall T.Like this, can easily the 12c of ozzle portion be inserted the low eyeball of intraocular pressure and cut wound.
If front end circumferential wall when 9 degree are following, then is not easy to insert the incision wound with respect to the angle of inclination of rear perisporium.
In addition, if form the above conical surface 40 of 10 degree from the rear of oblique shape portion 41 rear ends, then owing to the cause of this conical surface, the space in the ozzle portion becomes too small, so crystalline lens 1 excessively increases by the frictional resistance the during space in the ozzle portion.
And in this experiment, form the conical surface 40 to front from the rear end of oblique shape portion 41, like this, can suppress the increase of crystalline lens 1 frictional resistance when inner by the 12c of ozzle portion.And when crystalline lens 1 had surpassed the rear end of oblique shape portion 41, the distortion of this crystalline lens 1 was disengaged, and the stress that produces on crystalline lens 1 because of this distortion is released, so frictional resistance reduces.Like this, also can easily the 12c of ozzle portion be inserted the incision wound of the low eyeball of intraocular pressure, and, can realize the little 12c of ozzle portion of load to crystalline lens 1 effect.
Experiment 9: structure explanation, that cover ring 13, the cover ring shape 12c3 of portion, convex form cut covering shape 12c4,12c5 are set in ozzle portion in experiment 3,4, be not limited to the insertion utensil of present embodiment, also be applicable to the insertion utensil of existing type shown in Figure 20.Figure 22 is illustrated in the insertion utensil that is provided with cover ring 13 in the ozzle portion of insertion utensil of Figure 20.But, in this experimental example, use visco-elastic material as lubricant.
In addition, on the release axle 116 of the insertion utensil 102 of Figure 22, the O shape ring 43 that the front illustrated is installed.Like this, also can be used in O shape ring 43 on the insertion utensil 102 of existing type shown in Figure 20.
Below, with reference to Figure 23 A and Figure 23 B, the effect of O shape ring 43 is described.Shown in Figure 23 A, under inserting the assembling completion status of utensil 2 (before releasing the push operation of axle 16), the seal cover 14 that O shape ring (the 2nd elastomeric element) 43 that joins with the taper seat 12f that is formed on week in the 12a of the urceolus portion rearward end and being fixed on released on the axle 16 (ring part 14a: the 1st elastomeric element) mutually near.But, at this state similarly, because releasing axle 16 is being supported by ring part 14a and O shape ring 43 these two positions of seal cover 14 with respect to body 12, so, support the release axle with a ring part 14a and compared in 16 o'clock, can suppress to release the displacement of axle 16 with respect to the direction up and down of body 12 with seal cover 14.
When from releasing axle 16 shown in this state image pattern 23B like that when extreme direction pushes forward, be fixed on the seal cover 14 released on the axle 16 with release axle 16 forward extreme direction move, but, can but stop its moving of extreme direction forward with respect to releasing the mobile vertically O shape ring 43 of axle 16 by taper seat 12f, so, rest on the position that joins with this taper seat 12f.Like this, the distance L between the ring part 14a of seal cover 14 and the O shape ring 43 is drawn back.Therefore, compare with state before the push operation of releasing axle 16, release axle 16 is suppressed forr a short time with respect to the displacement of the direction up and down of body 12.Therefore, can release lead the exactly optic 1a of the crystalline lens 1 that kept by crystalline lens holding member 28 of the front end (crystalline lens handle part 16d) of releasing axle 16 with crystalline lens 1 rightly.
In addition, O shape ring 43 also can be installed in to be released on the axle 16, also can be fixed on the interior week of body 12.In addition, also can not only encircle 43 suitable parts in several positions settings with O shape at a position.In addition, also can axially be adjacent to dispose several O shapes rings 43, make it and release the outer peripheral face crimping of axle 16 with the inner peripheral surface of body 12, make it have sealing function, like this, complement each other with the sealing function of seal cover 14, can prevent more effectively that liquid from spilling from the open rearward end 12i of body 12.
In addition, also can be fixed on seal cover front on the release axle in the body encircling 43 suitable elastomeric elements with O shape, along with releasing axle moving of extreme direction forward, the interval that is equivalent between several elastomeric elements of O shape ring and seal cover is reduced into the state that appropriateness is drawn back from the state that draws back most.At this moment similarly, compare when only the elastomeric element that is equivalent to seal cover being set, can suppress to release the displacement of the direction up and down of a relative body, can rightly crystalline lens be released.
As mentioned above, according to the foregoing description, owing to do not have opening or slit from the crystalline lens resettlement section to the perisporium that inserts tube portion, so, can prevent effectively that its inner liquid from escaping to the outside.And, owing to can insert the crystalline lens resettlement section from the rear with the crystalline lens holding member, so, can easily crystalline lens be loaded in the crystalline lens resettlement section.
In addition, because the crystalline lens holding member with being configured in the crystalline lens resettlement section is keeping crystalline lens effectively with the state that crystalline lens is kept reservation shape, so, crystalline lens can not move or is out of shape because of flowing of liquid in the body, can accommodate lenticular insertion utensil steadily certainly.At this moment, need before operation, not inject the operation of inserting in the utensil to liquid, can alleviate operator or assistant's burden.
In addition, owing to inserting the covering part that is provided with at least a portion that covers the eye cut on the tube, so, can limit from inserting the amount of liquid that tube the supplies to ophthalmic clearance leakage in this cut.Therefore,, intraocular pressure is increased, the anterior chamber is fully expanded, can swimmingly crystalline lens be inserted in the eyeball even it is few to supply with the amount of liquid of ophthalmic.
In addition, owing to being configured in, the mode that several elastomeric elements are changed with the interval that makes them with respect to moving of body along with the release axle releases between axle and the body, so, for example, move the spacing bias of several elastomeric elements along with releasing axle towards the crystalline lens direction of insertion.By several such elastomeric elements are set, can suppress to release the radial shift of axle with respect to body.Therefore, the crystalline lens that the front end of releasing axle can be led exactly can be released crystalline lens rightly.
In the above-described embodiments, illustrated that (before delivering to hospital) is seated in crystalline lens 1 in the 12b of crystalline lens resettlement section in advance, is the insertion utensil of so-called prepackage type before the insertion utensil dispatches from the factory.But the present invention also is applicable to the insertion utensil of other form.For example, the present invention also is applicable to the insertion utensil and crystalline lens is taken care of respectively, load the insertion utensil of the type of crystalline lens 1 before operation.
Claims (20)
1. an insertion device for intraocular lens is characterized in that, has body, releases axle and crystalline lens holding member;
This body has accommodates ophthalmic and inserts with lenticular crystalline lens resettlement section and above-mentioned crystalline lens is passed out to the insertion tube portion of ophthalmic;
This release axle make above-mentioned crystalline lens from above-mentioned crystalline lens resettlement section forward extreme direction move, crystalline lens released ophthalmic by above-mentioned insertion tube portion;
This crystalline lens holding member keeps above-mentioned crystalline lens and is configured in the above-mentioned crystalline lens resettlement section;
Above-mentioned crystalline lens resettlement section has the shape that can accept the insertion of above-mentioned crystalline lens holding member from the rear.
2. insertion utensil as claimed in claim 1 is characterized in that, above-mentioned body, at least from above-mentioned crystalline lens resettlement section to above-mentioned insertion tube portion, have the perisporium in imperforation and gap.
3. insertion utensil as claimed in claim 1 is characterized in that, above-mentioned body is the monolithic molding parts.
4. insertion utensil as claimed in claim 1 is characterized in that, above-mentioned body has and is used for above-mentioned release axle is inserted this intrinsic open rearward end; Above-mentioned crystalline lens holding member is inserted in the above-mentioned crystalline lens resettlement section by above-mentioned open rearward end.
5. insertion utensil as claimed in claim 1 is characterized in that, liquid can inject or be housed in the above-mentioned body.
6. insertion utensil as claimed in claim 5 is characterized in that aforesaid liquid is a normal saline.
7. insertion utensil as claimed in claim 1 is characterized in that, above-mentioned crystalline lens holding member, can with above-mentioned lens edge portion in the 1st holding member that joins of the face of opposition side and the 2nd holding member are combined and are constituted mutually.
8. insertion utensil as claimed in claim 1 is characterized in that, above-mentioned crystalline lens holding member in fact not under the state of applied stress, is keeping this crystalline lens to above-mentioned lenticular optic.
9. an insertion device for intraocular lens is characterized in that, has the tube of insertion and releases axle;
This insertion tube is inserted into the cut of eyeball, ophthalmic is inserted pass out in the eyeball with crystalline lens;
This release axle with above-mentioned crystalline lens by above-mentioned insertion tube, release in the eyeball;
Above-mentioned insertion tube has covering part, and this covering part contacts, covers at least a portion that is inserted with the cut of inserting tube with eyeball.
10. insertion utensil as claimed in claim 9 is characterized in that, above-mentioned covering part is made of the parts that separate with above-mentioned insertion tube, is installed on the above-mentioned insertion tube.
11. insertion utensil as claimed in claim 10 is characterized in that, above-mentioned covering part is mounted to can be with respect to above-mentioned insertion tube inclination displacement.
12. insertion utensil as claimed in claim 9 is characterized in that, above-mentioned covering part and above-mentioned insertion tubular become one.
13. insertion utensil as claimed in claim 9 is characterized in that, by above-mentioned insertion tube liquid is supplied to ophthalmic.
14. insertion utensil as claimed in claim 13 is characterized in that aforesaid liquid is a normal saline.
15. an insertion device for intraocular lens is characterized in that, has body, releases axle and several elastomeric elements;
This body is provided with ophthalmic insertion crystalline lens;
This release axle is released ophthalmic with above-mentioned crystalline lens from above-mentioned body;
These several elastomeric elements are configured between above-mentioned release axle and the above-mentioned body, along with above-mentioned release axle with respect to the moving of above-mentioned body, it changes at interval.
16. insertion device for intraocular lens as claimed in claim 15 is characterized in that, along with above-mentioned release axle moves on the direction of above-mentioned crystalline lens being released ophthalmic, and the spacing bias of above-mentioned several elastomeric elements.
17. insertion utensil as claimed in claim 15 is characterized in that, above-mentioned several elastomeric elements comprise the 1st elastomeric element and the 2nd elastomeric element, and the 1st elastomeric element is along with above-mentioned release axle moves, and change with respect to the position of above-mentioned body; Above-mentioned the 2nd elastomeric element is along with above-mentioned release axle moves, and do not change with respect to the position of above-mentioned body.
18. insertion utensil as claimed in claim 17 is characterized in that, above-mentioned the 1st elastomeric element is fixed on the above-mentioned release axle.
19. insertion utensil as claimed in claim 17, it is characterized in that, above-mentioned the 2nd elastomeric element can be installed on the above-mentioned release axle with moving axially, and when above-mentioned release axle was mobile, the 2nd elastomeric element and above-mentioned body joined, stoped moving with respect to this body.
20. insertion utensil as claimed in claim 17 is characterized in that, above-mentioned the 2nd elastomeric element is fixed on the above-mentioned body.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006139561A JP2007307168A (en) | 2006-05-18 | 2006-05-18 | Instrument for inserting intraocular lens to be inserted |
| JP2006-139561 | 2006-05-18 | ||
| JP2006-139560 | 2006-05-18 | ||
| JP2006139560 | 2006-05-18 | ||
| JP2006139560 | 2006-05-18 | ||
| JP2006139561 | 2006-05-18 | ||
| JP2006-155051 | 2006-06-02 | ||
| JP2006155051 | 2006-06-02 | ||
| JP2006155051A JP4586173B2 (en) | 2006-06-02 | 2006-06-02 | Lens insertion device for intraocular insertion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101073519A true CN101073519A (en) | 2007-11-21 |
| CN101073519B CN101073519B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710105014 Expired - Fee Related CN101073519B (en) | 2006-05-18 | 2007-05-18 | Insertion device for intraocular lens |
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| Country | Link |
|---|---|
| JP (1) | JP5160812B2 (en) |
| CN (1) | CN101073519B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102283741A (en) * | 2011-07-14 | 2011-12-21 | 广州卫视博生物科技有限公司 | Folding artificial vitreous body injector |
| CN103179918A (en) * | 2010-08-24 | 2013-06-26 | 雅培医疗光学公司 | Protective cap for an insertion device and other insertion device features |
| CN101322664B (en) * | 2007-06-12 | 2013-07-31 | 爱尔康公司 | Lens injector lumen tip for wound assisted delivery |
| CN104379093A (en) * | 2012-04-20 | 2015-02-25 | 斯塔尔外科有限公司 | Pre-loaded injector for use with intraocular lens |
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| EP2111821A4 (en) * | 2007-02-08 | 2013-10-23 | Kaneka Corp | Injector for eye |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU623934B2 (en) * | 1988-10-07 | 1992-05-28 | Ioptex Research Inc | Intraocular lens insertion instrument |
| JPH0779826B2 (en) * | 1991-06-14 | 1995-08-30 | キヤノンスター株式会社 | Intraocular lens implanter |
| WO2000040175A1 (en) * | 1999-01-06 | 2000-07-13 | Tekia, Inc. | Apparatus for insertion of an intraocular lens |
| FR2822055B1 (en) * | 2001-03-16 | 2003-09-12 | Lab Contactologie Appl Lca | INTRAOCULAR LENS INJECTOR |
| JP4310051B2 (en) * | 2001-03-29 | 2009-08-05 | 株式会社ニデック | Intraocular lens insertion device |
| JP4068479B2 (en) * | 2003-02-28 | 2008-03-26 | 株式会社ニデック | Intraocular lens insertion device |
| JP2006006817A (en) * | 2004-06-29 | 2006-01-12 | Canon Star Kk | Intraocular lens insertion instrument |
| US8246631B2 (en) * | 2004-11-30 | 2012-08-21 | Bausch & Lomb Incorporated | Two stage plunger for intraocular lens injector |
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2007
- 2007-05-18 CN CN 200710105014 patent/CN101073519B/en not_active Expired - Fee Related
- 2007-05-18 JP JP2007132538A patent/JP5160812B2/en not_active Expired - Fee Related
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| CN108024853B (en) * | 2015-04-19 | 2020-05-12 | Atrion公司 | Spring powered, hydraulically operated intraocular lens inserter |
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| CN109414345A (en) * | 2016-06-28 | 2019-03-01 | Hoya株式会社 | Intraocular lens inserter |
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| CN112334176B (en) * | 2018-07-10 | 2023-09-12 | 爱尔康公司 | intraocular lens injector |
| JP7492461B2 (en) | 2018-07-10 | 2024-05-29 | アルコン インコーポレイティド | Intraocular Lens Injector |
| US11427665B2 (en) | 2018-08-17 | 2022-08-30 | Staar Surgical Company | Polymeric composition exhibiting nanogradient of refractive index |
| US10774164B2 (en) | 2018-08-17 | 2020-09-15 | Staar Surgical Company | Polymeric composition exhibiting nanogradient of refractive index |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101073519B (en) | 2013-03-20 |
| JP5160812B2 (en) | 2013-03-13 |
| JP2007330783A (en) | 2007-12-27 |
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