WO2023143555A1 - Sac capsulaire artificiel, et instrument d'implantation et procédé associé - Google Patents

Sac capsulaire artificiel, et instrument d'implantation et procédé associé Download PDF

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Publication number
WO2023143555A1
WO2023143555A1 PCT/CN2023/073664 CN2023073664W WO2023143555A1 WO 2023143555 A1 WO2023143555 A1 WO 2023143555A1 CN 2023073664 W CN2023073664 W CN 2023073664W WO 2023143555 A1 WO2023143555 A1 WO 2023143555A1
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WO
WIPO (PCT)
Prior art keywords
capsular bag
artificial
fixing
pouch
wire
Prior art date
Application number
PCT/CN2023/073664
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English (en)
Chinese (zh)
Inventor
侯豹可
Original Assignee
中国人民解放军总医院第一医学中心
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Application filed by 中国人民解放军总医院第一医学中心 filed Critical 中国人民解放军总医院第一医学中心
Publication of WO2023143555A1 publication Critical patent/WO2023143555A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery

Definitions

  • the invention relates to the technical field of medical devices, in particular to an artificial pouch and its implantation device and method.
  • Intraocular lens implantation mainly includes two methods: intraocular lens suspension surgery and intracapsular intraocular lens implantation surgery.
  • Capsular rupture or zonular rupture is a major intraoperative complication of cataract surgery.
  • the intraocular lens can be implanted into the ciliary sulcus; but if the capsular rupture is severe, only intraocular lens suspension can be used.
  • IOL Intraocular Lens, intraocular lens
  • IOLs are also required.
  • IOL implantation in the capsular bag cannot be performed clinically in ophthalmology, and only IOL suspension surgery (intraocular lens suspension, intraocular lens suspension surgery) can be performed.
  • IOL suspension surgery includes the following disadvantages:
  • the position of the intraocular lens suspension is prone to abnormality after implantation: because the IOL is suspended and fixed on the sclera at both ends of a single wire, the IOL is prone to horizontal or vertical deviation, and the rotation of the IOL may also occur; if the IOL position is abnormal, it will be greatly Affect the vision of the patient; the position of the intraocular lens after suspension is not in a physiological state, and it is prone to deflection or tilt, making it difficult to correct ametropia or glare.
  • IOL suspension is a fourth-level surgical operation (the highest level), which is higher than other cataract surgery (cataract ultra-thin surgery) Phacoemulsification + IOL implantation is a tertiary operation), the difficulty, complexity and risk of the operation are higher than those of conventional cataract surgery, and the operation time is longer.
  • Surgical damage to the cornea, iris and ciliary body, especially corneal tissue damage may cause postoperative complications such as corneal edema, intraocular hemorrhage, vision loss, and intraocular inflammation, resulting in uncertain postoperative results.
  • the commonly used suspension thread is non-absorbable nylon thread
  • the suspension thread is relatively thin
  • the weight of the IOL depends entirely on the two single-strand threads.
  • eye vibration such as exercise will cause suture fatigue, and the average is 4-6 years. It will break, causing the lens to dislocate into the vitreous cavity, requiring re-suspension surgery.
  • High-end lenses (astigmatism correction lenses, multifocal lenses, etc.) require that the lens must be in a physiological position (inside the capsular bag, in the center).
  • the surgeon adjusts the position through sutures, which has a large deviation. And it is prone to deflection, and it is impossible to completely center the IOL horizontally, so it is impossible to implant high-end crystals.
  • Chinese patent application CN107928869A discloses an artificial pouch.
  • the artificial pouch is provided with at least three positioning holes, and sutures are tied and fixed in the positioning holes.
  • the artificial pouch is provided with at least three fixing holes, and needs to be fixed with sutures and positioning holes at least three times in the eye, which is very difficult to operate and difficult to realize in clinical practice.
  • the purpose of the present invention is to provide an artificial capsular bag and its implantation equipment and method, so as to realize the reconstruction of the capsular bag environment for patients with severe capsular bag damage and patients who have lost the capsular bag, so that it can achieve the implantation conditions in the capsular bag of artificial lenses , and reduce the difficulty of operation, improve operation efficiency.
  • the invention provides an artificial pouch, comprising: a pouch body and at least three fixing wires, the pouch body has a pouch cavity; the pouch body is provided with at least three circumferentially distributed fixing holes; the fixing The inner end of the wire is provided with a limiting part, the fixing wire is passed through the fixing hole, the limiting part is located in the pouch and can prevent the fixing wire from detaching from the fixing hole.
  • the invention provides an artificial capsular bag implantation device, comprising: a puncture needle and the above-mentioned artificial capsular bag, the puncture needle includes a rod and a tip, the puncture needle is provided with a thread routing hole, the side of the puncture needle The wall is provided with a wire threading groove communicating with the wire routing hole, and the fixing wire can be threaded into the wire routing hole through the wire threading groove.
  • the present invention provides a method for implanting the artificial capsular bag, which is used to implant the above-mentioned artificial capsular bag, comprising: step S10, folding the artificial capsular bag and implanting the artificial capsular bag into the eye; step S20, placing the artificial capsular bag
  • the fixing wire is fixed to the sclera by puncturing to fix the capsular bag body.
  • the artificial capsular bag reconstructs the capsular bag environment for patients with severe capsular bag injuries and patients who have lost the crystal capsular bag, so that they can achieve the implantation conditions in the intraocular lens capsular bag, restore the implantation of the IOL capsular bag, and ensure that the IOL position is correct and stable , so as to improve the visual quality of patients after IOL implantation.
  • This artificial capsular bag conditions are created for IOL implantation in physiological positions, so that patients with severe capsular bag damage and patients who have lost their capsular bag can be equipped with high-end lenses such as multifocal lenses and astigmatism correction lenses.
  • the periphery of the artificial capsular bag can be painted in dark colors such as black and brown, and can provide artificial iris function for patients with iris defect or absence.
  • the artificial capsular bag can provide temporary capsular bag support for patients with silicone oil filling in combined anterior and posterior operations, and facilitate the implantation of the second-stage IOL capsular bag.
  • the fixing wire 40 can rotate freely relative to the pouch body 10, so that the pouch body 10 will not be deflected or displaced as the fixing wire 40 twists or rotates, which improves the accuracy of the implantation position of the pouch body 10 and stability.
  • Fig. 1-Fig. 4 is the structural representation of the artificial pouch provided by the present invention.
  • Figure 5 is an exploded view of the artificial pouch shown in Figure 1;
  • FIG. 6-9 are schematic structural views of the pouch body in the artificial pouch shown in FIG. 1;
  • FIGs 10-12 are structural schematic diagrams of the fixing wires in the artificial pouch shown in Figure 1;
  • Fig. 13-Fig. 15 are structural schematic diagrams of another embodiment of the fixing line in the artificial pouch provided by the present invention.
  • Figures 16-18 are schematic diagrams of the installation of the artificial pouch provided by the present invention in the eye
  • 19-21 are schematic structural views of the puncture needle in the artificial capsular bag implantation device provided by the present invention.
  • Pouch body 11. Pouch cavity; 21. Mesh; 22. Pouch line; 23. Circumferential support line; 31. Fixing hole; 32. Fixing seat; 40. Fixing line; 41. Line body ; 42, thread head; 50, limit part; 51, reverse winding part; 60, anti-skid part; 61, cone; 70, puncture needle; 71, rod part; 701 ⁇ Wire hole; 702, threading groove; 81, sclera; 82, cornea; 83, retina.
  • intraocular lens implantation technology can well replace the patient's diseased lens and improve the vision of patients with lens opacity and abnormal lens position. Ophthalmologists believe that only by implanting in the capsular bag can the intraocular lens be located in the center of the visual axis and perpendicular to the visual axis to achieve ideal visual acuity.
  • eye diseases such as Marfan syndrome and severe zonular laxity
  • surgical accidents such as capsular bag rupture and zonular injury during cataract surgery, and trauma may cause serious capsular bag damage or loss of the lens capsular bag, resulting in loss of intraocular lens Implantation conditions.
  • the present invention provides an artificial pouch, as shown in Figures 1-18, the artificial pouch comprises: a pouch body 10 and at least three fixing wires 40, the pouch body 10 has a pouch cavity 11; the pouch body 10 There are at least three circumferentially distributed fixing holes 31; the inner end of the fixing wire 40 is provided with a limiting portion 50, the fixing wire 40 is passed through the fixing hole 31, the limiting portion 50 is located in the pouch and can prevent the fixing wire 40 from Get out of the fixing hole 31.
  • the artificial capsular bag reconstructs the capsular bag environment for patients with severe capsular bag injuries and patients who have lost the crystal capsular bag, so that they can achieve the implantation conditions in the intraocular lens capsular bag, restore the implantation of the IOL capsular bag, and ensure that the IOL position is correct and stable , so as to improve the visual quality of patients after IOL implantation.
  • This artificial capsular bag conditions are created for IOL implantation in physiological positions, so that patients with severe capsular bag damage and patients who have lost their capsular bag can be equipped with high-end lenses such as multifocal lenses and astigmatism correction lenses.
  • the periphery of the artificial capsule bag can be painted in dark colors such as black and brown, and can provide artificial iris function for patients with iris defect or absence.
  • the artificial capsular bag can provide temporary capsular bag support for patients with silicone oil filling in combined anterior and posterior operations, and facilitate the implantation of the second-stage IOL capsular bag.
  • the fixed thread 40 fixes the capsular bag body 10 to the sclera 81, and the inner end of the fixed thread 40 is passed through the fixed hole 31 and is limited by the stopper 50, without knotting and fixing in the eye , reducing the difficulty of operation and improving operation efficiency.
  • the fixing wire 40 fits with the pouch body 10 in such a way as to pass through the fixing hole 31, The fixing wire 40 can rotate freely relative to the pouch body 10 to avoid abnormal position of the pouch body 10 caused by the fixing wire 40 being twisted or rotated by external force or its own elasticity during operation.
  • the artificial pouch increases the degree of freedom between the fixed line 40 and the pouch body 10, so that the pouch body 10 will not be deflected or displaced as the fixed line 40 twists or rotates, and the implantation of the pouch body 10 is improved.
  • the accuracy and stability of the input position is improved.
  • the fixing wire 40 includes a wire body 41 and a wire head 42 , the wire head 42 is pointed and located at the outer end of the fixing wire 40 .
  • the structural form of the limiting part 50 is not limited to one, for example: the limiting part 50 can be a base body, the outer diameter of the base body is larger than the wire diameter of the fixing wire 40 and larger than the aperture of the fixing hole 31, thereby limiting the fixing wire 40 Located in the fixing hole 31.
  • the inner end of the fixing wire 40 includes a reverse winding portion 51. As shown in FIGS.
  • the reverse winding portion 51 Through the reverse winding portion 51, the outer contour of the inner end of the fixing wire 40 is increased to have a position-limiting function, and the operation of knotting and fixing inside the eye is omitted.
  • the reverse winding portion 51 can be formed by hot melting; the diameter of the fixing wire 40 and the size of the reverse winding portion 51 are both adapted to the diameter of the fixing hole 31 .
  • the production of the fixing thread 40 and the capsular bag body 10 is completed before the operation, and the fixing thread 40 and the capsular bag body 10 form a complete set of products.
  • the fixing wire 40 can be a single wire or multiple wires.
  • the fixing wire 40 can be fixed to the sclera 81 by puncturing, and a frictional force is generated between the outer wall of the fixing wire 40 and the sclera 81 , thereby realizing the fixing of the fixing wire 40 and the capsular bag body 10 .
  • the outer wall of the fixing wire 40 is provided with an anti-slip part 60 , and the anti-slip part 60 is combined with the sclera 81 to improve the stability of the position of the fixing wire 40 and the pouch body 10 .
  • the anti-slip part 60 can be an annular protrusion, a dot-shaped protrusion or a thorn-shaped protrusion formed on the outer wall of the fixed wire 40, and can also be a spiral groove or an annular groove.
  • the anti-slip part 60 includes a plurality of conical bodies 61, as shown in Fig. 13-Fig.
  • the conical body 61 and the sclera 81 are combined together, which increases the force that the fixed line 40 can bear along the direction of the inner end of the fixed line 40 to the outer end of the fixed line 40, which is conducive to making the pouch body 10
  • the position in the eye is more accurate and stable; moreover, the fixing wire 40 enters the sclera 81 along the direction from inside to outside during the operation, and this embodiment is beneficial to reduce the resistance of the fixing wire 40 entering the sclera 81 .
  • the wire diameter of the fixing wire 40 is relatively thick. On the one hand, there is a relatively large contact area between the side wall of the fixing wire 40 and the sclera 81, which can generate a relatively large friction force and ensure the firmness of the combination of the fixing wire 40 and the sclera 81. ; On the other hand, the inner end of the fixed line 40 can form a limiting part 50 through one or less layers of reverse winding, so as to realize the limiting function.
  • the fixing thread 40 can use 6-0, 8-0 non-absorbable thread.
  • the fixation wire 40 may be attached to the sclera 81 through the piercing needle 70 .
  • the puncture needle 70 includes The rod part 71 and the tip part 72, the puncture needle 70 is provided with a threading hole 701, and the side wall of the puncture needle 70 is provided with a threading groove 702 communicating with the threading hole 701.
  • the puncture needle 70 is vertically punctured into the eye through the sclera 81
  • the fixed wire 40 is threaded through the wire hole 701 through the wire groove 702, and the wire hole 701 forms a puncture tunnel for the fixed wire 40 to pass through; after the puncture needle 70 is taken out, the fixed wire 40 is combined with the sclera 81.
  • special auxiliary devices such as the puncture needle 70, the outer end of the fixing thread 40 can be quickly and safely fixed to the sclera 81 without knotting and embedding the thread, and the whole operation is safe, fast, simple and reliable.
  • the number of fixing wires 40 in the artificial pouch can be three or more.
  • the number of fixing holes 31 on the pouch body 10 is three or more.
  • the artificial capsular bag includes three fixing wires 40
  • the three fixing wires 40 may be distributed around the center of the capsular bag body 10 in a circumferential direction, and the three fixing wires 40 fix the position of the capsular bag body 10 in the eye.
  • the artificial pouch includes four fixing lines 40 , the extension lines of the four fixing lines 40 all point to the center of the pouch body 10 and the adjacent fixing lines 40 are perpendicular to each other.
  • the fixing hole 31 is preferably a circular hole, so that the fixing wire 40 can rotate in the fixing hole 31 .
  • the artificial capsule disclosed in Chinese patent application CN107928869A imitates the capsule in a physiological state, and the main body is composed of anterior capsule + thick capsule.
  • the pouch body 10 of the artificial pouch is provided with a plurality of mesh holes 21. While reducing its own weight, the mesh holes 21 can be used as channels for the smooth flow of aqueous humor.
  • the pouch body 10 is soft and It is flexible, ensures the circulation of aqueous humor, and does not have the risk of glaucoma caused by blocking aqueous humor.
  • the pouch body 10 There are many ways to form the pouch body 10. For example, direct integral molding is adopted. Specifically, it can be injection molding. Through a mold, the mesh 21 is formed on the pouch body 10 at the same time during injection molding.
  • the pouch body 10 includes a plurality of pouch wires 22 arranged crosswise, and the multiple pouch wires 22 are connected together in a braided manner; or, the plurality of pouch wires 22 are connected to the Together, specifically, the intersecting parts of the pouch lines 22 are fixed by hot melting to realize thermoforming.
  • the pouch thread 22 is made of non-degradable and non-absorbable materials, such as ophthalmic sutures, ophthalmic suspension threads or suspension nylon threads. inflammation.
  • the shape of the capsular bag body 10 is set according to the intraocular tissue. As shown in FIGS.
  • the pouch body 10 includes an annular pouch line 22 and a radially extending pouch line 22, the two are intersected and configured as The pouch body 10 and the mesh 21 .
  • the pouch line 22 generally extends radially, and the extension direction of the pouch line 22 is not completely parallel to the radial direction.
  • the pouch line 22 is a spatial curve.
  • the pocket line 22 is inclined in the circumferential direction while extending in the radial direction.
  • the radial direction refers to the direction from the centerline of the pouch body 10 to the outside, or the direction from the outside to the centerline of the pouch body 10 .
  • Two ends of the pouch body 10 are provided with openings.
  • the pouch line 22 may extend from an opening at one end to an opening at the other end.
  • each mesh 21 gradually increases, which is beneficial to ensure the tension balance of the capsular bag body 10 , and the mouth of the artificial capsular bag is not easy to tear during the operation.
  • the pouch body 10 includes a circumferential support line 23 arranged along the outer contour of the pouch body 10 , and the pouch line 22 is affixed to the circumferential support line 23 .
  • the materials of the circumferential support wire 23 and the pouch wire 22 may be the same or different.
  • the artificial capsular bag provided by the present invention can be implanted into the eye through the standard phacoemulsification incision by applying the folding implantation method, and automatically unfolds after implantation, and the IOL can be easily implanted into the capsular bag cavity 11 of the artificial capsular bag .
  • the artificial capsule can be implanted into the eye through a common intraocular lens implantation device, the implantation is more convenient, the incision is smaller, and the damage to the cornea 82 is smaller.
  • the incision for implanting the artificial capsular bag can be the same corneal limbal incision as the phacoemulsification, and the artificial capsular bag is folded and implanted into the eye through a standard cataract surgical incision.
  • the capsular bag body 10 is formed by weaving or thermoforming a plurality of capsular bag wires 22. It is a three-dimensional capsular bag that automatically unfolds after being implanted in the eye.
  • the IOL implanted in the capsular bag cavity 11 has a good tension balance, and the state of tension balance It is close to the physiological capsular bag, which is conducive to the diffusion of tension.
  • the stability of the capsular bag body 10 and the position of the implanted IOL are good.
  • the IOL is located in the center of the visual axis and perpendicular to the visual axis, making it possible to implant high-end lenses.
  • the pouch body 10 includes a plurality of fixing seats 32 fixedly connected to the circumferential support wires 23, the fixing holes 31 are arranged on the fixing seats 32, and the inner ends of the fixing wires 40 are inserted into the fixing holes 31 to limit the position.
  • the portion 50 abuts against the fixing seat 32 , so that the position of the fixing wire 40 is limited, and at the same time, the fixing wire 40 can rotate in the fixing hole 31 .
  • the fixing seat 32 and the circumferential support wire 23 may be integrally structured.
  • the artificial capsular bag has the function of reconstructing the capsular bag, and is suitable for patients who have lost their natural capsular bag, and realizes intra-capsular artificial lens implantation for those with capsular bag damage.
  • the disclosed artificial capsular bag of Chinese patent application CN107928869A has the function of rebuilding the capsular bag
  • the intraocular fixation operation is very complicated, and the capsular bag cannot be kept open, which is not conducive to the uniform distribution of tension.
  • the incision for implantation in the eye is large, the damage is large, and the risk is high, which is difficult to achieve in clinical practice.
  • the artificial capsular bag provided by the present invention uses special auxiliary devices such as puncture needle 70, and is fixed on the sclera 81 through the fixing thread 40, without knotting and embedding the thread, which reduces the difficulty of operation, improves the operation efficiency, and has high clinical application value.
  • the shape of the artificial capsular bag is consistent with that of the physiological capsular bag.
  • the implantation method and position of the later implantation of the artificial lens are the same as those of the patients with the complete capsular bag.
  • the crystal of the artificial lens climbs up to support the surrounding artificial capsular bag, causing the artificial capsular bag to deform, and the artificial capsular bag can tightly wrap the artificial lens so that the artificial lens is located in a physiological position.
  • artificial lens implants such as aspheric lenses, astigmatism correction lenses, and multifocal lenses.
  • the artificial capsular bag has the function of separating the anterior and posterior chambers, and can intercept the silicone oil in the silicone oil-filled eye without the capsular bag, preventing the posterior chamber silicone oil from entering the anterior chamber.
  • Micro wearable devices can be implanted in the artificial pouch to meet the needs of patients with special needs. Micro wearable devices include but are not limited to special wearable electronic devices with functions such as artificial vision, visual enhancement, and telephoto magnification.
  • the present invention provides a device for implanting an artificial capsular bag, which includes: a puncture needle 70 and the above-mentioned artificial capsular bag.
  • the wire hole 701 and the side wall of the puncture needle 70 are provided with a wire threading slot 702 communicating with the wire routing hole 701 , and the fixing wire 40 can pass through the wire routing hole 701 through the wire routing slot 702 .
  • the artificial capsular bag implantation device includes all the functions and beneficial effects of the above-mentioned artificial capsular bag, which will not be repeated here.
  • the puncture needle 70 is also provided with a handle 73, the handle 73 and the tip 72 are respectively located at both ends of the rod 71, the wiring hole 701 runs through the handle 73, and the threading groove 702 can be arranged at the tip 72 or the rod 71 , preferably, the wire threading groove 702 is disposed on the stem portion 71 and close to the tip portion 72 .
  • the present invention provides a method for implanting an artificial capsular bag.
  • the method for implanting an artificial capsular bag includes: Step S10, folding the artificial capsular bag and implanting the artificial capsular bag into the eye; Fix to the sclera to fix the capsular bag body 10 .
  • the artificial capsular bag can be implanted into the eye through a common intraocular lens implantation device, the implantation is more convenient, the incision is smaller, and the damage to the cornea is less.
  • the fixing wire 40 can rotate freely relative to the pouch body 10, so as to avoid twisting or rotation of the fixing wire 40 under the action of external force or its own elasticity during the surgical operation, which would cause the pouch The position of the main body 10 is abnormal.
  • the fixation wire 40 may be attached to the sclera 81 through the puncture needle 70 .
  • the puncture needle 70 is vertically punctured into the sclera 81 into the eye, and the fixing thread 40 is passed through the threading groove 702 in the wiring hole 701, and the wiring hole 701 forms a puncture tunnel for the fixing thread 40 to pass through; after the puncture needle 70 is taken out , the fixing wire 40 is combined with the sclera 81, and the outer end of the fixing wire 40 can be quickly and safely fixed to the sclera 81 without knotting and embedding the wire, which makes the operation convenient and improves the operation efficiency.
  • the artificial capsular bag After implantation, the artificial capsular bag is automatically expanded, which is convenient for implanting the IOL into it, and has a good tension balance.
  • the IOL is located in the center of the visual axis and is perpendicular to the visual axis, making it possible to implant high-end lenses.
  • the eye has physiological structures such as sclera 81 , cornea 82 and retina 83 .
  • the implementation steps of the artificial capsular bag implantation method include:
  • the puncture needle 70 is punctured into the eye through the vertical sclera 81 at 2-3 mm behind the limbus, and with the help of a positioning hook or intraocular tweezers, hook the fixing line 40 of the artificial capsular bag out of the eye; (5) ) The puncture needle 70 is 2-4mm away from the sclera 81 puncture opening to puncture the sclera 81, so that the outlet is at the sclera 81 puncture opening (ie step (4) incision), and the hook fixing line 40 passes through the puncture tunnel; (6) Apply the puncture needle 70 puncture the sclera 81 at the position 2-4 mm away from the fixed line 40 (it

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

La résente invention concerne un sac capsulaire artificiel, ainsi qu'un instrument d'implantation et un procédé associé. Le sac capsulaire artificiel comprend un corps de sac capsulaire (10) et au moins trois lignes de fixation (40); le corps de sac capsulaire (10) est pourvu d'une cavité de sac capsulaire (11) ; le corps de sac capsulaire (10) est pourvu d'au moins trois trous de fixation (31) qui sont répartis dans une direction circonférentielle ; des parties de limitation (50) sont disposées aux extrémités internes des lignes de fixation (40) ; les lignes de fixation (40) passent à travers les trous de fixation (31) ; et les parties de limitation (50) qui sont situées dans le sac capsulaire, peuvent empêcher les lignes de fixation (40) d'être séparées des trous de fixation (31), et peuvent permettre aux lignes de fixation (31) de tourner librement. Au moyen du sac capsulaire artificiel, un environnement de sac capsulaire est reconstruit pour des patients ayant une grave lésion du sac capsulaire et des patients qui perdent des sacs capsulaires de lentille, de telle sorte que les conditions d'implantation de sac capsulaire de lentille intraoculaire peuvent être satisfaites, et ainsi, des lentilles intraoculaires spéciales peuvent être implantées chez les patients qui ont perdu les sacs capsulaires, la difficulté d'opération chirurgicale est réduite, et l'efficacité chirurgicale est améliorée. Le sac capsulaire artificiel peut être peint avec une couleur sombre et utilisé comme iris artificiel. Le sac capsulaire artificiel peut être utilisé en tant que membrane d'iris de lentille pour un patient ayant un oeil en huile de silicone pour empêcher l'huile de silicone située dans une chambre postérieure d'entrer dans une chambre antérieure.
PCT/CN2023/073664 2022-01-29 2023-01-29 Sac capsulaire artificiel, et instrument d'implantation et procédé associé WO2023143555A1 (fr)

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CN202210111322.8 2022-01-29
CN202210111322.8A CN114504428B (zh) 2022-01-29 2022-01-29 人工囊袋及其植入器械与方法

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CN114504428B (zh) * 2022-01-29 2024-05-24 中国人民解放军总医院第一医学中心 人工囊袋及其植入器械与方法

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