CN219847060U - Intraocular lens folding and taking-out device - Google Patents
Intraocular lens folding and taking-out device Download PDFInfo
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- CN219847060U CN219847060U CN202320887628.2U CN202320887628U CN219847060U CN 219847060 U CN219847060 U CN 219847060U CN 202320887628 U CN202320887628 U CN 202320887628U CN 219847060 U CN219847060 U CN 219847060U
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- intraocular lens
- sleeve
- adjusting element
- jaw
- clamping element
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- 210000004087 cornea Anatomy 0.000 claims abstract description 10
- 230000007423 decrease Effects 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 6
- 210000000080 chela (arthropods) Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 208000032843 Hemorrhage Diseases 0.000 description 2
- 210000002159 anterior chamber Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 208000004683 Corneal Endothelial Cell Loss Diseases 0.000 description 1
- 208000036829 Device dislocation Diseases 0.000 description 1
- 208000006550 Mydriasis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003511 endothelial effect Effects 0.000 description 1
- 230000000642 iatrogenic effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000004410 intraocular pressure Effects 0.000 description 1
- 208000029515 lens disease Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 210000005070 sphincter Anatomy 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses an intraocular lens folding and taking-out device, which comprises: sleeve pipe: the two ends are open, one end is a contact end which stretches into the cornea in operation, the cross section of the contact end is oblong, the other end is a holding end, the cross section of the holding end is circular, and the end part is rotatably provided with an adjusting element; an adjusting element: the inner surface is provided with a thread, and the diameter of the thread gradually decreases from one end to the other end; clamping element: is of a pincer-shaped structure and is slidably arranged in the sleeve; the jaw is arranged in the contact end, the tail of the jaw forms a screw thread matched with the screw thread of the adjusting element, and an elastic element which enables the jaw to keep an open state is arranged in the jaw structure. The utility model allows for the complete removal of the intraocular lens without enlarging the limbal incision by movement within the pincer-like structure within the cannula.
Description
Technical Field
The utility model relates to the field of ophthalmic surgical equipment, in particular to an intraocular lens folding and taking-out device.
Background
Intraocular lenses are commonly used in ophthalmic lens disease surgery, any cause of which results in loose or broken zonules of the lens, which can cause abnormal positions of the intraocular lens, known as intraocular lens dislocation, for which the original intraocular lens is often taken out clinically, and a new intraocular lens is implanted.
Because of the error of the measurement of the degree of the intraocular lens before operation or the implantation of the intraocular lens in the childhood, the degree of occurrence does not meet the living requirement along with the age, the vision quality is poor, the intraocular lens is clinically replaced, the original intraocular lens is taken out, and a new intraocular lens is implanted.
Thus, during replacement of an intraocular lens, removal of the existing intraocular lens is a necessary step in the procedure.
The existing intraocular lens is of a foldable structure with the diameter of 12mm, is fed in a folded form through a small incision (not more than 3 mm) and is unfolded in the eye when being implanted, and therefore, when being taken out, the existing intraocular lens cannot be taken out through the original small incision mode; clinically, for the extraction of the intraocular lens, the cornea edge incision can be selected to be completely extracted, or the intraocular lens is sheared and fragmented in the anterior chamber by utilizing an intraocular lens shearing machine or a capsular shearing machine, and the intraocular lens is extracted in a segmented way, wherein the cornea edge incision is usually enlarged to 6mm in the former way, so that the incision is large, the risks of bleeding, iris extraction, low intraocular pressure, retinal separation, choroidal separation and the like are caused in the operation, the incision is needed to be sutured after the operation, and the problems of cornea disconnection, corneal iatrogenic astigmatism, scars and the like exist after the operation; in the process of cutting the intraocular lens by utilizing the intraocular lens scissors or the capsular bag scissors, the risks of iris and atrial angle injury, hemorrhage, corneal endothelial cell loss and the like exist due to small anterior chamber space, iris pigment loss exists in a long term, and the damage of the sphincter of the pupil leads to complications such as mydriasis, corneal endothelial decompensation and the like.
Thus, there is a need for a device that allows for the complete removal of an intraocular lens without enlarging the limbal incision.
Disclosure of Invention
The present utility model aims to solve at least to some extent one of the technical problems in the above-described technology. The object of the utility model is to provide an intraocular lens folding and removing device which is capable of restraining the inner movable clamp by the outer tube and pulling the intraocular lens into the outer tube to be removed in a folded state.
To achieve the above object, an embodiment of the present utility model provides an intraocular lens folding and removing device comprising:
sleeve pipe: the two ends of the sleeve are open, one end is a contact end which extends into the cornea in operation, the cross section of the contact end is oblong, the other end is a holding end, the cross section of the holding end is circular, and the end part is rotatably provided with an adjusting element;
an adjusting element: the inner surface is provided with a thread, and the diameter of the thread gradually decreases from one end to the other end;
clamping element: the clamping element is of a pincer-shaped structure and is slidably arranged in the sleeve; the jaw is arranged in the contact end, the tail of the pliers forms a screw thread matched with the screw thread of the adjusting element, and an elastic element which enables the jaw to be kept in an open state is arranged in the pliers structure.
The adjusting element rotates, the clamping element is driven to slide in the sleeve through threaded fit with the clamping element, the jaw of the clamping element is opened when extending out of the sleeve, and after the clamping element contacts the intraocular lens, the adjusting element reverses, the jaw of the clamping element is driven to be closed, and the sleeve is retracted while clamping the intraocular lens.
According to the intraocular lens folding and taking out device of the embodiment of the present utility model, the sleeve is extended into the cornea incision, the holding member is extended from the sleeve, holds the intraocular lens and is retracted, and the intraocular lens is pressed into a state of not more than the diameter of the inner wall of the sleeve during the process of being pulled into the sleeve, thereby achieving taking out of the intraocular lens in a folded state.
In addition, the intraocular lens folding and taking-out device according to the above embodiment of the present utility model may have the following additional technical features:
optionally, a sliding groove for sliding the clamping element is formed in the sleeve.
Optionally, the connection part of the sleeve and the adjusting element, the outer wall of the ring forms a ring groove, the adjusting element is provided with a jackscrew along the radial direction, and the jackscrew stretches into the ring groove to limit the radial movement of the adjusting element.
Optionally, the elastic element is a spring and is disposed at the tail of the pliers.
Drawings
FIG. 1 is a schematic diagram of a structure according to one embodiment of the utility model;
FIG. 2 is a schematic view of a usage state according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a clamping member according to one embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a contact end according to one embodiment of the present utility model;
fig. 5 is a block diagram of an adjustment element according to one embodiment of the utility model.
Description of the reference numerals:
ring groove 13 of holding end 12 of contact end 11 of sleeve 1
Clamping element 2 jaw 21 tail 22 resilient element 23
The adjusting element 3 is screwed with a screw 31.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the utility model, the sleeve extends into the cornea incision, the clamping element extends out of the sleeve to clamp and retract the intraocular lens, and the intraocular lens is extruded to be not more than the diameter of the inner wall of the sleeve in the process of being pulled into the sleeve, so that the intraocular lens is taken out in a folded state.
In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
An intraocular lens fold extraction device of fig. 1-5; wherein fig. 1 shows the device in its extended and deployed state during surgery, the device is composed of a cannula 1, a clamping element 2 and an adjusting element 3, wherein: the two ends of the sleeve 1 are open, one end is a contact end 11 which stretches into the cornea in operation, the cross section of the contact end 11 is oblong, the other end is a holding end 12, the cross section of the holding end 12 is circular, and the end part is rotatably provided with an adjusting element 3; the inner surface of the adjusting element 3 is formed with a thread, the diameter of which gradually decreases from one end to the other end; the clamping element 2 is of a pincer-shaped structure and is slidably arranged in the sleeve 1; the jaw 21 is arranged in the contact end 11, the tail 22 forms a screw thread which is in threaded fit with the adjusting element 3, and an elastic element 23 which keeps the jaw 21 in an open state is arranged in the clamp structure.
The adjusting element 3 rotates, the clamping element 2 is driven to slide in the sleeve 1 by being matched with the screw thread of the clamping element 2, the jaw 21 of the clamping element 2 is opened when extending out of the sleeve 1, after the adjusting element 3 is reversed after contacting the artificial lens, the jaw 21 of the clamping element 2 is driven to be closed, the sleeve 1 is retracted when clamping the artificial lens, as shown in figure 2, and the artificial lens is folded up without being blocked at the position of the contact end 11 due to certain toughness of the body of the artificial lens in the process of being pulled into the sleeve 1.
Fig. 3 shows a block diagram of the gripping element 2 of the device, in order to achieve that the gripping element 2 can be moved back and forth in the restricted space of the sleeve 1, that the jaws 21 open when they protrude beyond the contact end 11, and that they can be retracted after gripping the intraocular lens, the structure of the gripping element 2 is set as follows: the ratio of a to b in the graph is 1.1:2.7, the condition that the jaw 21 is not enough in extending out of the contact end 11 or the jaw tail 22 is limited in movement, so that the jaw 21 is not wide enough can be avoided.
As shown in fig. 4, the external width B of the contact end 11 of the device is 2.2-2.8 mm, and the height H is 0.9-1.4 mm; the internal width is 2.1-2.7 mm, and the height is 0.8-1.3 mm; the contact end length L1 is 5-10 mm; this configuration allows the contact end 11 to extend unhindered into the incision in the cornea during surgery and as close as possible to the IOL, and in use, the gripping element 2 is constrained by the contact end 11 from rotating itself as the adjustment element 3 is rotated back into the contact end 11, and as the IOL is pulled back into the contact end 11, even if the jaws 21 of the gripping element 2 lose the constraint of the contact end 11, the gripping element 2 will be held against spin as the IOL fills the contact end 11. In addition, the end part is chamfered into an arc by polishing, so that the ocular tissues are prevented from being scratched during the operation; the holding end 12 is of a circular section, the outer diameter D is 5mm, and the length L2 is 150-200 mm, so that the holding is convenient. In some embodiments, a sliding groove for sliding the clamping element 2 is formed in the sleeve 1, the sliding grooves are oppositely arranged in the inner wall, the handle of the clamping element 2 is embedded in the sliding groove, and when the adjusting element 3 rotates, the structure can play a better role in resisting torque, so that the movement of the adjusting element is more stable.
It can be seen that the screw thread of the adjusting element 3 is conical as a whole, and when it rotates, the clamping element 2 moves along the screw thread, and because of the conical structure of the screw thread, when the clamping element 2 extends out of the contact end 11, the jaw 21 can be opened as much as possible under the action of the elastic element 23, the opening size of which is 1.2-1.8 mm according to different structures, meanwhile, the clamp rod of the jaw 21 is semicircular with a diameter of 0.5mm, and the clamping surface is subjected to polishing anti-skid treatment.
The outer surface of the adjusting element 3 is provided with anti-skid knurling.
When the adjusting element 3 is reversed, the clamping element 2 moves backwards, the jaws 21 close as the diameter of the thread decreases gradually, clamping the intraocular lens firmly and tighter during the pulling into the contact end 11, so that the pulling-in process does not fall off easily.
Optionally, the connection part of the sleeve 1 and the adjusting element 3 is formed with a ring groove 13 on the outer wall, the adjusting element 3 is radially provided with a jackscrew 31, the jackscrew 31 extends into the ring groove 13 to limit the radial movement of the adjusting element 3, and the sleeve 1 is thin in wall thickness, so that the sleeve wall is directly deformed and processed to be provided with the ring groove 13, the jackscrew 31 limits the axial movement of the sleeve, multiple groups of jackscrews 31 can be arranged, the jackscrew 31 can be replaced by a spring bead structure, and the adjusting element 3 can be conveniently removed through the structure, so that the clamping element 2 can be conveniently taken out from the sleeve 1 for cleaning.
Optionally, the elastic element 23 is a spring, and is disposed at the tail 22, so that the jaw 21 maintains the open structure, for example, a torsion spring is disposed at the hinge of the pincer structure, or a spring sheet is provided, so that the device needs to be taken out of the sleeve 1 again after clamping the intraocular lens, and therefore, the spring is disposed at the tail 22, so that the spring can be conveniently detached, and the pincer structure is in a relaxed state, so that the pincer structure can be conveniently pulled out of the sleeve 1.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (4)
1. An intraocular lens folding and removing device, characterized in that: comprising the following steps:
sleeve pipe: the two ends of the sleeve are open, one end is a contact end which extends into the cornea in operation, the cross section of the contact end is oblong, the other end is a holding end, the cross section of the holding end is circular, and the end part is rotatably provided with an adjusting element;
an adjusting element: the inner surface is provided with a thread, and the diameter of the thread gradually decreases from one end to the other end;
clamping element: the clamping element is of a pincer-shaped structure and is slidably arranged in the sleeve; the jaw is arranged in the contact end, the tail of the clamp forms a screw thread matched with the screw thread of the adjusting element, and an elastic element for keeping the jaw in an open state is arranged in the clamp structure;
the adjusting element rotates, the clamping element is driven to slide in the sleeve through threaded fit with the clamping element, the jaw of the clamping element is opened when extending out of the sleeve, and after the clamping element contacts the intraocular lens, the adjusting element reverses, the jaw of the clamping element is driven to be closed, and the sleeve is retracted while clamping the intraocular lens.
2. An intraocular lens fold extraction device as defined in claim 1 wherein: a sliding groove for the clamping element to slide is formed in the sleeve.
3. An intraocular lens fold extraction device as defined in claim 1 wherein: the sleeve is connected with the adjusting element, an annular groove is formed in the outer wall of the ring, a jackscrew is arranged on the adjusting element along the radial direction, and the jackscrew stretches into the annular groove to limit the adjusting element to move along the radial direction.
4. An intraocular lens fold extraction device as defined in claim 1 wherein: the elastic element is a spring and is arranged at the tail of the pliers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320887628.2U CN219847060U (en) | 2023-04-19 | 2023-04-19 | Intraocular lens folding and taking-out device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320887628.2U CN219847060U (en) | 2023-04-19 | 2023-04-19 | Intraocular lens folding and taking-out device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219847060U true CN219847060U (en) | 2023-10-20 |
Family
ID=88348662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320887628.2U Active CN219847060U (en) | 2023-04-19 | 2023-04-19 | Intraocular lens folding and taking-out device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219847060U (en) |
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2023
- 2023-04-19 CN CN202320887628.2U patent/CN219847060U/en active Active
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