Abstract
The invention is directed to an injector device for introducing an intraocular lens into an eye. The injector device defines a longitudinal axis and includes an injector tip having a through guide channel for the intraocular lens. The channel has a rear inlet and a front outlet. A cassette accommodates the intraocular lens therein and two closure tips are configured for closing the cassette. The closure tips extend in the direction of the longitudinal axis axially farther rearwardly than the rear inlet. A method for prefolding the intraocular lens in the cassette is also disclosed.
Claims
1. An injector device for introducing an intraocular lens into an eye, the injector device defining a longitudinal axis and comprising: an injector tip defining a through guide channel for the intraocular lens; said channel having a rear inlet and a front outlet; a cassette for accommodating the intraocular lens therein and being movable along said longitudinal axis toward said rear inlet; first and second closure prongs configured to coact with said cassette for closing said cassette and folding said intraocular lens in response to a movement of said cassette toward said rear inlet; and, said first and second closure prongs extending parallel to said longitudinal axis axially farther rearwardly than said rear inlet so as to permit engagement with said cassette in response to said movement thereof.
2. The injector device of claim 1, wherein said first and second closure prongs are spaced from each other and extend mutually parallel to said longitudinal axis and/or said first and second closure prongs are configured and arranged to be mirror symmetrical to each other and extend parallel to said longitudinal axis.
3. The injector device of claim 1, wherein said first and second closure prongs have respective free rear length sections which are tapered; and, each of said rear length sections define a curved guide surface.
4. The injector device of claim 3, wherein each of said guide surfaces has a curved rear section.
5. The injector device of claim 4, wherein said curved rear section has a thin rear end; said thin rear end continuously widens up to a middle thickness and, then, from said middle thickness, said rear section thins continuously again up to a front end thereof.
6. The injector device of claim 5, wherein said steep curve-like rear section leads into a forward section of said guide surface; and, said forward section extends parallel to said longitudinal axis.
7. The injector device of claim 1, each of said first and second closure prongs defining a guide surface having a rear length section; and, said rear length section including a first S-shaped course.
8. The injector device of claim 7, wherein said guide surfaces of said first and second closure prongs have respective forward sections; said cassette has cover flaps; and, said injector device further comprises a guide slit formed at least between said forward sections for guiding said cover flaps of said cassette therein during said movement of said cassette.
9. The injector device of claim 7, wherein said rear length section includes a second S-shaped course which lies lower in elevation than said first S-shaped course; and, said second S-shaped course runs at least in segments in the direction of said longitudinal axis toward said cassette.
10. The injector device of claim 9, wherein said first S-shaped course and said second S-shaped course of each of said first and second closure prongs conjointly define a transition therebetween; and, said transition has a stepped configuration at least in selected regions thereof.
11. The injector device of claim 9, wherein the second S-shaped courses of corresponding ones of said first and second closure prongs are mutually adjacent and lie closer to each other than said first S-shaped courses of corresponding ones of said first and second closure prongs.
12. An injector device for introducing an intraocular lens into an eye, the injector device defining a longitudinal axis and comprising: an injector tip defining a through guide channel for the intraocular lens; said channel having a rear inlet and a front outlet; a cassette for accommodating the intraocular lens therein and being movable along said longitudinal axis toward said rear inlet; said cassette having first and second cover flaps for holding said intraocular lens; said first and second cover flaps being pivotally movable about said longitudinal axis from a first position wherein said intraocular lens is held in an unbent state into a second position wherein said intraocular lens is in a folded state preparatory for insertion into said rear inlet of said channel of said injector tip; first and second closure prongs configured to coact with said cover flaps for pivotally moving said cover flaps from said first position into said second position in response to a movement of said cassette toward said rear inlet of said channel; and, said first and second closure prongs extending parallel to said longitudinal axis axially rearwardly relative to said rear inlet.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) The invention will now be described with reference to the drawings wherein:
(2) FIG. 1 is a perspective representation of an embodiment of an injector device according to the invention;
(3) FIG. 2 is a partial representation of the injector device according to FIG. 1 in perspective sectional view;
(4) FIG. 3 is the injector device according to FIG. 1 in an operating state different from FIG. 1;
(5) FIG. 4 is a partial representation of the injector device according to FIG. 3 in perspective sectional view;
(6) FIG. 5 is a perspective representation of an embodiment of a cassette according to the invention for receiving an intraocular lens with an additional support slide;
(7) FIG. 6 is a further perspective representation of the device according to FIG. 5;
(8) FIG. 7 is a perspective sectional view of the device according to FIG. 5 and FIG. 6;
(9) FIG. 8 is a perspective representation of the device according to FIG. 5 to FIG. 7 with closed cover flaps of the cassette;
(10) FIG. 9 is a partial representation of the injector device according to FIG. 1 in enlarged view;
(11) FIG. 10 is a perspective representation of a partial section of the injector device according to FIGS. 1 to 4 in a further intermediate operating state;
(12) FIG. 11 is a perspective representation of an embodiment of a cassette according to the invention in the opened state of the cover flaps;
(13) FIG. 12 is the cassette according to FIG. 11 with closed cover flaps;
(14) FIGS. 13A to 13C are sectional representations of partial views of various embodiments of cover flaps of the cassette according to FIG. 11 and FIG. 12 with partially shown intraocular lens;
(15) FIG. 14 is a sectional representation of the cassette according to FIGS. 11 and 12 with received intraocular lens in the opened state of the cover flaps;
(16) FIG. 15 is a sectional representation of the arrangement according to FIG. 14 in a first intermediate operating state with partially pivoted cover flaps;
(17) FIG. 16 is a sectional representation of the arrangement according to FIG. 14 and FIG. 15 with further pivoted cover flaps in a further intermediate operating state;
(18) FIG. 17 is a sectional view of the arrangement according to FIG. 14 to FIG. 16 with closed cover flaps;
(19) FIG. 18 is a sectional representation of the injector device according to FIGS. 1 to 3 with the cassette with closed cover flaps according to the representation in FIG. 17;
(20) FIG. 19 is a perspective representation of a further embodiment of an injector device according to the invention;
(21) FIG. 20 is a perspective representation of a packaging and transport device with an injector device according to FIG. 19;
(22) FIG. 21 is a plan view of a partial section of the injector device according to FIG. 19 with closing tips shown from above;
(23) FIG. 22 is a perspective representation of the components in FIG. 21;
(24) FIG. 23 is a side view of partial components of the representation in FIG. 21 and FIG. 22;
(25) FIG. 24 is a plan view of the representation in FIG. 23;
(26) FIG. 25 is a further perspective representation of the components according to FIGS. 21 and 22;
(27) FIG. 26 is a perspective sectional view of the representation in FIG. 25;
(28) FIG. 27 is a perspective representation of the components as they are shown in FIGS. 23 and 24;
(29) FIG. 28 is a perspective representation of an embodiment of a device including a support slide and a cassette for an intraocular lens;
(30) FIG. 29 is a further perspective representation of the device according to FIG. 28 without end-side covering elements;
(31) FIG. 30 is a perspective representation of the device according to FIG. 29 in a state received in an injector tube of the injector device;
(32) FIG. 31 is a front view of the representation in FIG. 30;
(33) FIG. 32 is a front view of an embodiment of a cassette according to the invention for receiving an intraocular lens;
(34) FIG. 33 is a perspective representation of the cassette according to FIG. 32 with partially lifted pivoting cover and partially closed cover flaps;
(35) FIG. 34 is a sectional representation of the implementation in FIG. 33;
(36) FIG. 35 is a sectional representation of the injector device according to FIG. 19 in a first operating state;
(37) FIG. 36 is a sectional representation of the injector device according to FIG. 35 in a second operating state;
(38) FIG. 37 is a sectional representation of the injector device according to FIG. 35 and FIG. 36 in a further operating state;
(39) FIG. 38 is a perspective representation of the injector device according to FIG. 35 to FIG. 37 in a further operating state;
(40) FIG. 39 is a perspective sectional representation of the injector device according to FIG. 35 to FIG. 38 in a further operating state;
(41) FIG. 40 is a representation of a partial section of the injector device according to FIG. 35;
(42) FIG. 41 is an enlarged partial representation of the injector device according to FIG. 36;
(43) FIG. 42 is an enlarged representation of the injector device according to FIG. 37;
(44) FIG. 43 is an enlarged representation of a partial section of the injector device according to FIG. 38;
(45) FIG. 44 is an enlarged partial representation of the injector device according to FIG. 39;
(46) FIG. 45 is an enlarged representation of a partial section of the injector device according to FIGS. 35 to 39 in a further intermediate operating state between the operating states according to FIGS. 36 and 37; and,
(47) FIG. 46 is an enlarged representation of the view in FIG. 45.
DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION
(48) In FIG. 1, an embodiment of an injector device 1 is shown in a perspective representation, which is formed for introducing an intraocular lens into an eye. In the shown implementation, the injector device 1 includes an injector tip 2 connected to an injector tube 3. The injector tube 3 is displaceable in the direction of a longitudinal axis A of the injector device 1 relative with respect to a piston tube 4. The piston tube 4 is provided for receiving a piston 5, which is displaceable in axial direction. The intraocular lens is shifted out of a cassette 6 (FIG. 2) and shifted into a guide channel 7 (FIG. 2) of the injector tip 2 by the piston 5.
(49) As is shown in FIG. 1, the injector tube 3 has an upwards open receiving space 8, which is formed for receiving a device 9. The device 9 includes the cassette 6 and a support slide 10. In the shown implementation, the support slide 10 is formed as an integral tubular component. In the interior 11 (FIG. 2), the cassette 6 is stationarily positioned to the support slide 10.
(50) The receiving space 8 has an axial length (x-direction), which is greater than a length of the device 9 and thus also larger than the length of the support slide 10. As can be taken from the representations in particular in FIG. 1 and FIG. 2, the cassette 6 is completely received in the interior 11 and does not extend beyond the dimensions of the support slide 10 in axial direction.
(51) In the shown implementation in FIG. 1, the support slide 10 is closed with a covering element at a front end 10a. Above and below, the indications to front and rear components relate to their position in the direction of the longitudinal axis A with regard to the tip 2 of the device 1. The covering element 12 can be plate-like and intrinsically rigidly formed. However, it can also be a foil, for example a coextruded foil. However, it can also be a foil, on which a rigid element for gripping is disposed, by which the foil can then be peeled off.
(52) At a rear end 10b, the support slide 10 is fixedly connected to the piston tube 4. As it is in particular apparent thereto in FIG. 2, the piston tube 4 is internally hollow and the piston 5 is axially displaceable biased by a spring 13.
(53) The injector tip 2 includes the already mentioned guide channel 7, which has a rear inlet 7a and a front outlet 7b. The rear inlet 7a is disposed facing the receiving space 8 and the intraocular lens 14 (FIG. 2) shifted out of the cassette 6 can be shifted into the guide channel 7 via this rear inlet 7a. The front end and thus the front outlet 7b can be introduced into a small incision in the eye to be operated and thereto the intraocular lens 14 can be shifted into the eye from the injector device 1.
(54) As shown in FIG. 1 and FIG. 2, the guide channel 7 tapers viewed from its rear inlet 7a to its front outlet 7b, wherein this is especially continuously effected.
(55) As shown, the injector device 1 includes two closing tips 15 and 16. These closing tips 15 and 16, which can also be referred to as closing prongs or closing blades or closure fingers, extend parallel to each other and spaced to each other with respect to the longitudinal axis A. With regard to the longitudinal axis A, the two closing tips 15 and 16 are positioned symmetrically opposing thereto and formed symmetrically to each other. As shown in FIG. 1 and FIG. 2, the closing tips 15 and 16 extend in the receiving space 8. They come to a front delimiting wall 17, which delimits the receiving space 8 on the front side. The delimiting or bounding wall 17 is configured integrally with the injector tip 2 in the shown implementation. The closing tips 15 and 16 are configured for closing cover flaps of the cassette 6 when an axial relative displacement between the closing tips 15 and 16 of the cassette 6 is effected.
(56) As is illustrated in the operating state clarified here in FIG. 1 and FIG. 2 thereto, the device 9 with the support slide 10 and the cassette 6 is positioned at the rear end of the receiving space 8 and thus a positional initial state is occupied. In this position, in particular, contact between the closing tips 15 and 16 and the cassette 6 does not yet exist.
(57) The closing tips 15 and 16 are analogously formed such that the following explanation to the closing tip 15 as it is illustrated in FIG. 2 in enlarged manner also applies to the closing tip 16.
(58) The closing tips 15 and 16 extend further rearwards than the rear inlet 7a of the injector tip 2 viewed in axial direction. As is in particular apparent in FIG. 2, the cassette 6 is positioned in the interior 11 such that an engaging space 21 is formed between an inner wall 18 of the support slide 10 and the cover flaps 19 and 20 (FIG. 5) of the cassette 6. The closing tips 15 and 16 engage with this engaging space 21 if an axial relative displacement between the closing tips 15 and 16 and the device 9 is effected.
(59) The closing tip 15 includes a rear first length section 22, which tapers to a rear end 23 of the closing tip 15. A top side section 24 of a top side of the rear first section 22 is configured with a first S-shaped extension, wherein this first S-shaped extension is formed in a sectional plane extending in the x-z plane. This ramp-like rise with the first S-shaped extension then transitions into a front second length section 25 of the closing tip 15 in a flatly configured top side section 26. By the top side sections 24 and 26, a part of a guiding surface 27 is formed. The guiding surface 27 complements itself afterwards by a second S-shaped extension of a top side 28 in the first rear section 22. This second S-shaped extension is also to be understood in a sectional plane, which extends in the x-z plane.
(60) As is apparent from the representation in FIG. 2, this second S-shaped extension of the top side section 28 then also transitions into a flat top side section 29 in the front second section 25 of the closing tip 15.
(61) As is apparent thereto in FIG. 2, in height direction and thus in z-direction, the second S-shaped extension and thus the top side section 28 is located deeper than the top side section 24. Similarly, the top side section 29 is located deeper than the top side section 26. Thus, the guiding surface 27 is in particular constituted by the top side sections 24, 26, 28 and 29.
(62) Between the top side sections 24 and 28, a stepped transition 30 is at least partially formed viewed over the length and thus over the extension in x-direction. Correspondingly, a stepped transition 31 is also formed between the top side sections 26 and 29. As is shown according to FIG. 2, the top side sections 28 and 29 located deeper are disposed closer to the longitudinal axis A than the top side sections 24 and 26 located higher. The top side sections 28 and 29 located deeper are thus formed facing the closing tip 16.
(63) Moreover, the injector tube 3 also has a guiding slit 32, which is formed in a bottom 33 of the injector tube 3. The device 9 is disposed engaging with this guiding slit 32 such that the axial relative displacement of the injector tube 3 relative to the device 9 and to the piston tube 4 is correspondingly guided and laterally stabilized.
(64) In FIG. 3, the injector device 1 is shown in an operating state different from FIG. 1 and FIG. 2. In contrast to FIG. 1 and FIG. 2, here, the completely shifted-back state of the injector tube 3 relative to the piston tube 4 is illustrated. In this configuration, the device 9 with the support slide 10 is therefore in particular disposed abutting on the bounding wall 17. In this implementation, the closing tips 15 and 16 are positioned maximally shifted into the interior 11.
(65) Due to the shaping of the closing tips 15 and 16, on this movement path between the operating states according to FIG. 1 and FIG. 2 on the one hand and FIG. 3 and FIG. 4 on the other hand, by this axial relative displacement, movement of the cover flaps 19 and 20 of the cassette 6 around the longitudinal axis A is automatically effected such that they are transitioned starting from the completely opened state shown in FIG. 2 into the completely closed state shown in FIG. 4 and this is automatically effected.
(66) Thereby, the intraocular lens 14 first preferably stored in the non-deformed state in the cassette 6 is positioned in the desired pre-folded final position in the cassette 6 in the operating state according to FIG. 3 and FIG. 4. As is apparent in FIG. 2 and FIG. 4, the support slide 10 includes a channel in the rear area, in which a shift-out element 34, which is preferably formed of an elastically deformable material, is disposed. This component also referred to as damping element is shifted into the interior 11 by the piston 5 in shifting the intraocular lens 14 out of the cassette 6 such that the piston 5 does not directly come into contact with the intraocular lens 14. This has advantages to the effect that the very hard and stiff piston 5 then does not cause mechanical damage to the intraocular lens 14.
(67) As is apparent in FIG. 2 and FIG. 4, a covering element 35 is also disposed at the rear end 10b, which can also be a foil. This covering element 35 is then pierced by the piston 5 and the element 34 is shifted into the interior 11. However, according to the representation in FIG. 4, this is only effected if the operating state according to FIG. 3 and FIG. 4 is achieved on the one hand and then the piston 5 is shifted forward in axial direction.
(68) Moreover, in FIG. 2 and FIG. 4, a base part 36 of the cassette 6 is also apparent, which is fixedly connected to the support slide 10. Thereto, a configuration T-shaped in cross-section of the base part 36 is for example formed such that certain anchoring of the cassette 6 in the support slide 10 is achieved. The two cover flaps 19 and 20 are disposed on this base part 36 pivotable relative thereto. In particular, the cassette 6 is integrally formed of plastic and the cover flaps 19 and 20 are disposed thereon via film hinges 37 and 38 (FIG. 5).
(69) In FIG. 4, the final pre-folded state of the intraocular lens 14 in the cassette 6 is shown, before this intraocular lens 14 is then subsequently shifted into the guide channel 7.
(70) In FIG. 5, a perspective representation of an embodiment of the device 9 is shown. The tubular configuration of the support slide 10 is illustrated. Moreover, guiding blades 39 formed on a bottom side 40 of the support slide 10 are also shown. By means of these guiding blades 39, the engagement with the guiding track 32 is allowed.
(71) In FIG. 6, a further perspective representation of the device 9, as it is shown in FIG. 5, is illustrated. The cover flaps 19 and 20 are illustrated in completely opened state. The inner wall 18 of the support slide 9 bounding the interior 11 includes a dome-like or curved ceiling side 41 such that a tunnel is formed.
(72) In the shown embodiment, the cover flaps 19 and 20 are intrinsically deformable. In particular, the deformation is effected in defined manner and thus in directed and autonomous manner by the closing operation. In a non-deformed base position, these cover flaps 19 and 20 have, as shown in FIGS. 5 to 7, an arc-shaped flap section 42. At a front free end 43 of this arc-shaped flap section 42, a hammerhead-shaped thickening 44 is formed. This is realized in the cover flap 20 in analogous manner.
(73) The cover flaps 19 and 20 have outer sides 19a and 20a. They are not straight, but formed with different curvatures. This arises by different radial thicknesses of length areas of the cover flaps in their lengths viewed in the direction around the axis A. Thereto, the cover flaps have thinner flap sections 42 and 47 besides the end-side thickenings 44 and 45, to which thicker areas then again adjoin as outward formed elevations 19b and 20b on the other hand. The flap sections 42 and 47 are intrinsically reversibly bendable in repeated manner perpendicular to the axis A, but can also be formed only for defined onetime and thus plastic deformation.
(74) In particular, the base part 36 is rigid and not deformable around the longitudinal axis A. The intrinsic deformability of the cover flaps 19 and 20 means that they can non-destructively deform their arc-shaped structure around the longitudinal axis A such that the arc shape can be enhanced or mitigated. This is effected over the entire length of the cover flaps 19 and 20 viewed in the direction of the longitudinal axis A, but respectively in the same manner such that undesired twisting around the axis A is prevented.
(75) By this possibility that the cover flaps 19 and 20 are able to intrinsically deform at least in certain areas along their lengths (measured in the cross-section perpendicular to the axis A in the direction around the axis A) in length sections perpendicular to the axis A, the pre-folding of the intraocular lens 14 in the cassette 6 is favored.
(76) The procedure in this respect will be explained later.
(77) In FIG. 8, a perspective representation of the device 9 is shown, in which the cover flaps 19 and 20 are illustrated in the completely closed state. The hammerhead-like thickening 45, which is disposed at the free end 46 of the cover flap 20, is also apparent.
(78) In FIG. 9 an enlarged representation of a section of FIG. 1 is shown. The configuration of the closing tips 15 and 16 is shown. Moreover, it is also shown that the transition 30 between the top side sections 24 and 28 diminishes from the beginning of the rear section 22 up to the rear end 23 or the stepping decreases.
(79) In FIG. 10, a representation of the section according to FIG. 9 is shown, in which a further intermediate operating state is illustrated and in which the closing tips 15 and 16 are already shifted into the interior 11 in certain areas. The contact of the guiding surfaces 27 of the closing tips 15 and 16 with outer sides (19a, 20a) of the cover flaps 19 and 20 is already effected.
(80) In FIG. 11, a perspective representation of an embodiment of the cassette 6 is shown, wherein here the cover flaps 19 and 20 are shown in the opened state. It is apparent that the arc-shaped flap sections 42 and 47 are deformable perpendicularly to the axis A, wherein the radial thickness thereof is smaller thus viewed perpendicular to the axis A than the radial dimensions of the thickenings 44 and 45 as well as of the elevations (19b, 20b).
(81) Moreover, the web-like thickenings 44 and 45 extend in radial direction and thus perpendicular to the axis A on both sides of the ends 43 and 46.
(82) The two hammerhead-like thickenings 44 and 45 have outer ends 48 and 49 as well as inner ends 50 and 51 viewed in radial direction. Between these ends 48 and 50 on the one hand and 49 and 51 on the other hand, contact surfaces 52 and 53 are formed. As it is apparent in FIG. 12 thereto, in which a perspective representation of the cassette 6 with completely closed cover flaps 19 and 20 is shown, these contact surfaces 52 and 53 abut on each other on full surface.
(83) In FIGS. 11 and 12, the tubular configuration of the cassette 6 is apparent.
(84) In FIGS. 13A to 13C, front views of the different configurations of a cassette 6 with introduced intraocular lens 14 are shown, wherein here differences in the cross-sectional configurations of the cover flaps 20 are in particular illustrated. In particular, different cross-sectional shapes of the hammerhead-like thickenings 45 are illustrated. Therein, different shapings of those partial areas of the hammerhead shape result, which face the intraocular lens 14.
(85) In the following FIG. 14 to FIG. 17, the scenario for pre-folding the intraocular lens 14 in the cassette 6 is explained in more detail.
(86) Thereto, in FIG. 14, the basic state is shown, in which the cover flaps 19 and 20 are completely opened and the cover flaps 19 and 20 are shown in themselves in a bent, but non-deformed basic state, wherein the basic shape of the arc-shaped flap sections 42 and 47 is therein shown. In this state, the intraocular lens 14 is not yet bent and rests on the inner sides of the cover flaps 19 and 20.
(87) Starting from this state, in an axial relative displacement to each other between the closing tips 15 and 16 and the cassette 6 then effected, contact of the guiding surfaces 27 of the closing tips 15 and 16 on the outer sides 19a, 20a of the cover flaps 19 and 20 and they lift them according to the arrows P1 and P2 in FIG. 15 such that they are pivoted around the longitudinal axis A perpendicular to the figure plane.
(88) Since the flap sections 42 and 47 have a smaller radius than the respective remainder of the cover flaps 19 and 20, the thickenings 44 and 45 are guided inwards upon further pivoting around the longitudinal axis A such that they seat on the intraocular lens 14 and thus folding stabilizers are formed at least by the thickenings 44 and 45. At least from then, the intraocular lens 14 is clamped to a certain extent, and upon further axial relative displacement between the cassette 6 and the closing tips 15 and 16, further movement towards each other of the cover flaps 19 and 20 is effected such that the further intermediate position according to FIG. 16 is then achieved. Therein, first, only the outer ends 48 and 49 contact each other. Mechanical contact is first only achieved at these ends (48, 49) and the contact surfaces 52 and 53 are incidentally still disposed without contact.
(89) These deforming and folding sequences, as they are explained in FIG. 14 to FIG. 15 up to now, are an essential prerequisite for the desired defined pre-folding of the lens 14. By the specific shaping of the interior 11 of the support slide 10, then, it is further allowed that starting from the intermediate state in FIG. 16 the closed state of the cover flaps 19 and 20 can automatically appear. Due to the intrinsic deformation of the cover flaps 19 and 20, a certain tension state appears in the cover flaps 19 and 20. Due to the achieved abutment of the outer ends 48 and 49, in further movement of the cover flaps 19 and 20 towards each other, abutting of the contact surfaces 52 and 53 can be automatically achieved in the self-automatism, and the mutual support of the thickenings 44 and 45, outward movement, in particular outward snapping of these ends 44 and 45 can be achieved. Thereby, the inward bent basic state of the flap sections 42 and 47 is then automatically deformed and bent outwards, in particular snapping outwards is effected due to the supporting forces between the thickenings 44 and 45, and the self-stabilizing and self-retaining final state according to FIG. 17 is achieved. There, the contact surfaces 52 and 53 abut on each other on full surface, and a substantially symmetrical and round receiving space for the intraocular lens 14 is formed viewed in cross-section, which is only interrupted by the hammerhead-like thickenings 44 and 45. At least from the state according to FIG. 16, the ceiling side 41 is provided with a free space formed correspondingly to the top, such that upward snapping of the thickenings 44 and 45 is then allowed. This is shown in the sectional representation according to FIG. 18, in which the final state of the cassette 6 with the intraocular lens 14, as is shown in FIG. 17, is shown in the state disposed in the injector device 1 and thus also the device 9.
(90) As is apparent in FIG. 18, the shaping of the outer side (19a, 20a) of the cover flaps 19 and 20 is preferably such that large-area, in particular full-area and relatively exactly fitting abutment on guiding surfaces 27 of the closing tips 15 and 16 is formed at least in this final position.
(91) In FIG. 19, in a perspective representation, a further embodiment of an injector device 1 is shown. Unlike the representation in the previous embodiment, here, it is provided that the injector tube 3 is integrally formed with the piston tube 4. This means that the two tubes 3 and 4 are fixedly connected to each other, in particular integrally formed.
(92) Here too, the upward open receiving space 8 is formed and the device 9 with a cassette 6 and a support slide 10 is inserted.
(93) In FIG. 20, an embodiment of a packaging and transport device 54 is shown. The container in this respect is formed for receiving the injector device 1, as it was explained in FIGS. 1 to 4, or for receiving the injector device 1 according to FIG. 19. It is filled with a corresponding sterile liquid, wherein a corresponding sterile liquid is already provided in the cassette 6 for flushing around the lens 14 here too. The container is then closed by a covering, as for example a foil, in sterile manner and can then be delivered from the manufacturer to the medical personnel in this compact configuration. The medical personnel then only has to remove the completely loaded injector or injector device 1 from the device 54 and perform no further loading of the injector device 1 with a cassette at all or optionally the removal of an intraocular lens 14 from a further separately delivered container. Thereby, the handling is substantially simplified and errors in loading can be avoided.
(94) In FIG. 21, a plan view of the injector tube 3 with the injector tip 2 is shown, wherein only the front area with the receiving space 8 and removed device 9 is illustrated. In a bottom 55 of the injector tube 3, the guiding track or the guiding slit 32 is apparent. The closing tips 15 and 16 are illustrated and the spaced arrangement and connection to the bounding wall 17 with front ends 56 and 57 is shown.
(95) In this configuration, unlike the embodiment explained heretofore, it is provided that a rear section 22 extending up to the dashed line, forms in tapering manner. This rear section 22 includes a rear guiding surface section 58 of the guiding surface 27, which is formed in the manner of a steep turn. This means that it does not extend in a plane, but is formed curved and tortuous in the space. This steep turn-like guiding surface section 58 extends from a rear end 23 of the closing tip 15 up to a front end 49. Thus, it extends over the entire length of the rear section 22 of the closing tip 15. Moreover, this guiding surface section 58 is configured such that a rear area end 60 is thinner or narrower than the middle piece 61 such that this area section 58 continuously expands and increases starting from this rear end 60 and then again tapers starting from the maximum width up to the front end 59. Thus, a type of boomerang shape is virtually formed, which moreover also forms a certain winding in the manner of a helical section. Here too, the explanation to the closing tip 15 applies to the closing tip 16 in analogous manner since it is identically formed and a symmetrical configuration to the longitudinal axis A is generated.
(96) Adjoining to the rear length section 22 of the closing tip 15, the front length section 25 is formed. It includes a flat top side 26, which adjoins to the front section 25 at an upper edge 62 of the steep turn-like guiding surface section 58.
(97) The guiding surface 27 has a front guiding surface section 63 besides the steep turn-like guiding surface section 58, which extends parallel to the longitudinal axis A. As is apparent from the representation in FIG. 21, a radial distance and thus a distance perpendicular to the longitudinal axis A between the rear ends 60 of the tips 15 and 16 is larger than a corresponding distance between the front ends 59 of the rear guiding surface section 58, wherein this smaller distance then achieved on the front ends 59 corresponds to equal to the distance between the front guiding surface sections 63, which in particular then remains constant over the entire length of the front guiding surface sections 63.
(98) By these guiding surface sections 63 and the spacing thereof, a guiding slit 64 is formed. The substantially closed cover flaps 19 and 20 of the cassette 6 are guided in it and retained in their position until the cassette 6 has assumed the final position achieved for the axial displacement direction.
(99) In FIG. 22, a perspective reprepentation of FIG. 21 is shown.
(100) In FIG. 23, a side view is shown, in which only the injector tip 2 and the closing tip 16 are shown. In this respect, the contour of the outer edge of the guiding surface 27 is illustrated in the area of the guiding surface section 58. An outer side 65 adjoining to the top side and the guiding surface section 58 is also illustrated.
(101) In FIG. 24, a plan view of the components in FIG. 23 is shown, wherein reference is made to the explanations to FIGS. 21 to 23 with respect to the features and configurations.
(102) In FIG. 25, a further perspective representation of the implementations in FIGS. 21 to 24 is shown.
(103) The position of the closing tips 15 and 16 relative to the guide channel 7 is shown.
(104) A more accurate view is apparent in the sectional representation in FIG. 26 thereto, wherein the sectional plane here includes the longitudinal axis A.
(105) Moreover, in FIGS. 25 to 27, the shape and curvature of the guiding surface section 58 in the three-dimensional space is apparent in even more detailed manner. The crescent or boomerang-like area shape with the additional uneven winding for configuring a steep turn-like shaping is shown.
(106) Moreover, the curved or dome-like shape of a bottom side 66 adjoining to the outer side 65 and the top side 26 as well as the section 58 is also shown. The bottom side 66 transitions into the front guiding surface section 63, which then joins to the top side 26. By these mentioned area parts, a closing tip 15 and 16 is formed, respectively.
(107) In FIG. 28, a perspective representation of the embodiment of a device 9 having a cassette 6 and a support slide 10 is shown.
(108) In FIG. 29, a perspective view is illustrated thereto, wherein the front-side covering in the form of the covering element 12 is already removed.
(109) In this implementation, the support slide 10 includes an upward protruding plate-like handle part 67, which a user can grip to be able to displace the device 9 in the direction of the longitudinal axis A relative to the closing tips 15 and 16 in the receiving space 8.
(110) In the representation according to FIG. 29, the multiple guiding elements in the form of blades or locking elements 39 are illustrated, which are attached to the bottom 40.
(111) In this embodiment, the cassette 6 is additionally formed with a securing cover 68 besides the base part 36 and the two wing-like cover flaps 19 and 20. The securing cover 68 is preferably also integrally formed with the other components of the cassette 6. Such a securing cover 68 can also be provided in the other implementations of cassettes 6 explained heretofore.
(112) The securing cover 68 is attached to the base part 36 pivotable relative thereto, wherein in particular a connection via a film hinge 72 (FIG. 33) is provided thereto.
(113) In the opened state of the cover flaps 19 and 20, the securing cover 68 is closed. It has a hook-shaped securing bracket 69 at its front end such that the intraocular lens 14 cannot fall or slip out of the cassette 6 neither to the top nor to the front.
(114) In FIG. 30, a further perspective representation of the device 9 is shown in the state inserted into the receiving space 8. The locked arrangement is apparent, wherein the elements 39 are disposed in the guiding slit 32 thereto and extend through it such that engaging behind the outer side of the injector tube 3 is effected with the elements 39. Thereby, the axial displacement is the simplest possible and yet slipping or canting in another spatial direction is prevented. By the flexibility of the elements 39, simple insertion and locking of the device 9 in the receiving space 8 and the guiding slit 32 can be effected.
(115) In FIG. 31, a front view of the representation in FIG. 30 is shown. In this respect, the position of the cassette 6 in the interior 11 is apparent.
(116) In FIG. 32, a view from the front to the cassette 6, as it was explained in FIGS. 28 to 31, is shown. The intraocular lens 14 is disposed therein in the base position.
(117) Starting from the representation in FIG. 32, the securing cover 68 can be automatically lifted and opened. Thereto, according to the representation in FIG. 33, pivoting of the cover flaps 19 and 20 around the longitudinal axis A is effected, wherein this is effected by the already explained scenarios with the closing tips 15 and 16.
(118) During this pivoting of the cover flaps 19 and 20, contact of the thickenings 44 and 45 with the securing cover 68 is then achieved. Thereto, it includes oblique lifting elements, in particular lifting flanks 70 and 71. With further closing of the cover flaps 19 and 20, the thickenings 44 and 45 slide along these oblique lifting flanks 70 and 71, whereby the securing cover 68 is lifted, as it is illustrated in FIG. 33. Therein, the film hinge 72 is horizontally oriented such that the cover 68 is upward lifted pivotable around this axis as it is illustrated by the arrows.
(119) In FIG. 34, a sectional representation of the perspective view in FIG. 33 is shown. Therein, the intraocular lens 14 is disposed in an interior 73, which is bounded by the cover flaps 19 and 20 and the base part 36 in the closed state of the cover flaps 19 and 20.
(120) In FIG. 35, a perspective representation of the injector device 1 in an operating state is shown, in which the device 9 is disposed in the receiving space 8 in a rear base position.
(121) Starting from this state, in the following, the front-side covering in the form of the covering element 12 is then removed by a user, as it is shown in FIG. 36. In the following, the device 9 with the support slide 10 and the cassette 6 is then axially forward shifted towards the injector tip 2 until it has reached the front final position according to the representation in FIG. 37. During this shifting operation between the positions in FIG. 36 and FIG. 37, the automatic closure of the cassette 6 is achieved since the closing tips 15 and 16 engage with the interior 11 of the support slide 10 and lift and close the cover flaps 19 and 20. Therein, the intraocular lens 14 in the cassette 6 is brought in a pre-folded state. As is apparent in FIG. 37, the securing cover 68 is then also automatically lifted.
(122) In a further step, according to the representation in FIG. 38, the piston 5 is then forward shifted until it contacts the rear cover element 35. It is in particular formed such that it can be pierced by the piston 5, as it is shown in FIG. 39. Then, the elastic element 34 is shifted forward by the piston 5 and the intraocular lens 14 is contacted and then shifted out of the cassette 6 into the guide channel 7. There, it is further folded since the guide channel 7 tapers up to the outlet 7b. In a then maximally folded position, the intraocular lens 14 is then shifted out of the injector tip 2 and shifted into the eye.
(123) In FIGS. 40 to 44, the operating states explained based on FIGS. 35 to 39 are again illustrated, wherein only the area of the injector device 1 is respectively shown, which is formed forward from the receiving space 8.
(124) In FIG. 45, a further perspective representation of partial components of the injector device 1 is shown, wherein a state is shown here, in which the closing tips 15 and 16 extend linearly into the interior 11 and the cover flaps 19 and 20 just contact on the outer sides (19a, 20a) to then pivot around the axis A afterwards and bring into the closure position.
(125) Thereto, a further enlarged section of the representation in FIG. 45 is shown in FIG. 46. In particular, the engagement of the closing tips 15 and 16 with the outer sides (19a, 20a) of the cover flaps 19 and 20, in particular and preferably on the outer sides of the thickenings 44 and 45, is shown here too. By the specific shaping of the closing tips 15 and 16, in particular the guiding surfaces 27, which is adapted to the shaping of the outer side of the cover flaps 19 and 20, optimum pivoting operation of the cover flaps 19 and 20 without laterally slipping past can be achieved.
(126) It is understood that the foregoing description is that of the preferred embodiments of the invention and that various changes and modifications may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.
