WO2012037550A1 - Anneau pour pupille - Google Patents

Anneau pour pupille Download PDF

Info

Publication number
WO2012037550A1
WO2012037550A1 PCT/US2011/052136 US2011052136W WO2012037550A1 WO 2012037550 A1 WO2012037550 A1 WO 2012037550A1 US 2011052136 W US2011052136 W US 2011052136W WO 2012037550 A1 WO2012037550 A1 WO 2012037550A1
Authority
WO
WIPO (PCT)
Prior art keywords
pupil
ring
latch member
latch
tissue
Prior art date
Application number
PCT/US2011/052136
Other languages
English (en)
Inventor
Fuxiang Zhang
Original Assignee
Henry Ford Health System
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henry Ford Health System filed Critical Henry Ford Health System
Publication of WO2012037550A1 publication Critical patent/WO2012037550A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0231—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for eye surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2833—Locking means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A61B2017/0641—Surgical staples, i.e. penetrating the tissue having at least three legs as part of one single body

Definitions

  • Embodiments relate to a pupil ring for at least partially encircling the pupil and constraining and stabilizing its size.
  • Mydriasis is an excessive dilation of the pupil, typically due to trauma or disease, sometimes referred to as a "blown pupil". Normally, the pupil constricts in the light and dilates in the dark to allow an appropriate amount of light through the lens to the retina. In the case of a mydriatic pupil, the pupil size and shape are fixed, resulting in symptoms of glare, decreased vision, and cosmetic asymmetry of the pupil. Currently, some artificial pupil prostheses are available for the management of mydriasis, but there are restrictions for their use. One conventional surgical approach is suturing 360 degrees around the pupil rim to constrain its size, but the surgery is difficult and not many surgeons are capable of performing the procedure. Furthermore, due to the complexity of the surgery, iatrogenic damage to the eye can result.
  • FIGURE 1 is a perspective view of a pupil ring according to one embodiment with its anchors in an open configuration
  • FIGURE 2 is a perspective view of one anchor of the ring of FIG. 1 in an open configuration
  • FIGURE 3 is a perspective view of one anchor of the ring of FIG. 1 in a closed configuration
  • FIGURE 4 is a perspective view of the ring of FIG. 1 with its anchors in a closed configuration
  • FIGURE 5 is a perspective view of a pupil ring according to another embodiment with its anchors in an open configuration
  • FIGURE 6 is a perspective view of one anchor of the ring of FIG. 5 in an open configuration
  • FIGURE 7 is a perspective view of one anchor of the ring of FIG. 5 in a closed configuration
  • FIGURE 8 is a perspective view of the ring of FIG. 1 with its anchors in a closed configuration
  • FIGURE 9 is a perspective view of a pupil ring according to another embodiment with its anchors in an open configuration
  • FIGURE 10 is a perspective view of one anchor of the ring of FIG. 9 in an open configuration
  • FIGURE 11 is a perspective view of one anchor of the ring of FIG. 9 in a closed configuration
  • FIGURE 12 is a perspective view of the ring of FIG. 9 with its anchors in a closed configuration
  • FIGURE 13 is a perspective view of a pupil ring according to another embodiment.
  • FIGURE 14 is a perspective view of a pupil ring according to another embodiment.
  • a pupil ring is provided for at least partially encircling the pupil and constraining and stabilizing its size, such as for treating mydriasis.
  • Pupil size may be constrained to generally match the size of the pupil in the other eye.
  • the ring 10 includes a plurality of anchors 12 for attaching to and capturing tissue at the pupil margin to constrain the pupil and maintain a desired size thereof.
  • the anchors 12 may be spaced generally equidistantly around the circumference of the ring 10, so as to more equally distribute tension.
  • the ring 10 generally lies in a plane, and the anchors 12 may extend outside of that plane.
  • five anchors 12 are illustrated, but it is understood that any number of anchors 12 may be employed.
  • the anchors 12 may include a latch member 14 and a latch receiver 16.
  • FIG. 2 depicts an open configuration of the anchor 12, prior to tissue capture, wherein the latch member 14 is spaced from the latch receiver 16.
  • FIG. 3 depicts a closed configuration of the anchor 12, wherein tissue is captured by engagement of the latch member 14 with the latch receiver 16.
  • FIG. 1 illustrates all anchors 12 in the open configuration
  • FIG. 4 illustrates all anchors 12 in the closed configuration.
  • the latch member 14 may resemble a hook or the like, and the latch receiver 16 may resemble a loop or similar structure for receiving the hook.
  • the latch member 14 may be used to pierce tissue at the pupil margin, and then the latch member 14 may be inserted at least partially through the latch receiver 16.
  • a grommet 18 or similar member may be secured onto the tip of the latch member 14 to prevent withdrawal of the latch member 14 back through the latch receiver 16 to ensure sustained tissue capture.
  • FIGS. 5-8 illustrate another embodiment of a pupil ring 20, wherein the description above with respect to ring 10 may also be applicable to ring 20.
  • the anchors 22 include a latch member 24 resembling a convex loop portion and a latch receiver 24 resembling a concave loop portion which is sized to receive the latch member 24.
  • FIGS. 5 and 6 show the anchors 22 in an open configuration
  • FIGS. 7 and 8 show the anchors 22 in a closed configuration.
  • the latch member 24 contacts tissue at the pupil margin in the open configuration and captures the tissue via engagement of the latch member 24 with the latch receiver 26 in the closed configuration, clamping the tissue therebetween.
  • FIGS. 9-12 illustrate another embodiment of a pupil ring 30, wherein the description above with respect to either ring 10 or 20 may also be applicable to ring 30.
  • ring 30 comprises separate first 32 and second rings 34, wherein the first and second rings 32, 34 may be coupled together (not shown).
  • Each anchor 36 comprises a latch member 38, such as in the form of a convex loop portion, provided on the first ring 32, and a latch receiver 40, such as in the form of a loop, provided on the second ring 34.
  • FIGS. 9 and 10 show the anchors 36 in an open configuration
  • FIGS. 1 1 and 12 show the anchors 36 in a closed configuration.
  • the latch member 38 contacts tissue at the pupil margin in the open configuration and captures the tissue via engagement of the latch member 40 at least partially within the latch receiver 40 in the closed configuration, clamping the tissue therebetween.
  • FIG. 13 illustrates another embodiment of a pupil ring 40, wherein the description above with respect to rings 10, 20, or 30 may also be applicable to ring 40.
  • the anchors 42 do not comprise a latch member and latch receiver, but rather the anchor 40 only includes a latch member 44, resembling a hook or the like.
  • the latch member 44 may be used to pierce tissue at the pupil margin, wherein a shape of the hook may facilitate retention of the tissue on the latch member 44.
  • the latch member 44 may be generally U-shaped and lie in a plane generally parallel to the plane of the pupil ring 40.
  • a grommet (not shown) or similar member may be secured onto the latch member 44 to ensure sustained tissue capture.
  • a pupil ring 50 having an open loop configuration for at least partially encircling the pupil margin may be provided, wherein this configuration is applicable to any of the embodiments described herein.
  • latch members and receivers can be interchanged between the different ring embodiments described herein.
  • latch member 38 may be provided in place of latch member 14 on ring 10.
  • latch members and receivers having configurations other than those depicted herein are also contemplated in accordance with the present invention.
  • the pupil ring may be constructed from a biocompatible material such as, but not limited to, silicone or PMMA. It is understood that other materials can also be used for construction of the ring, wherein the material should be thin and light, may be at least partially flexible or foldable, but should have sufficient rigidity to maintain the ring shape.
  • the pupil ring may be provided in a library of different sizes or customized for the desired size of a particular patient's pupil.
  • the pupil ring may have a diameter of approximately 3-5 mm, with the anchors having a size of approximately 0.2 mm in width.
  • Delivery of the pupil ring to the eye can be accomplished in a manner similar to other intraocular lens delivery devices.
  • a shooter or delivery injection system may be used to deliver the pupil ring through an incision into its desired location.
  • the pupil ring may be delivered inside the anterior chamber, on top of the capsular bed and in the same plane as the iris.
  • the anterior chamber may be filled with an ophthalmic viscoelastic device (OVD), such as PROVISC ® to protect the corneal endothelium cells.
  • ODD ophthalmic viscoelastic device
  • the surgeon can hold the pupil ring with forceps in one hand while inserting microforceps through a side port with the other hand to grab the enlarged pupil margin, then to pull the pupil margin tissue into engagement and capture by one of the anchors.
  • the same process can be repeated multiple times to have all of the anchors engaged with the pupil margin.
  • implantation of the pupil ring may follow cataract removal.
  • the surgeon may remove the cataract in a standard technique, followed by insertion of the pupil ring.
  • the intra-ocular lens implant will already be in the capsular bag.
  • a corneal or limbal incision created for the cataract surgery should be large enough for delivering the pupil ring without need for enlargement.
  • the OVD can be removed and the incision should not require any suturing for closure.

Landscapes

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

Abstract

La présente invention se rapporte à un anneau pour pupille qui permet de maîtriser et de stabiliser la taille d'une pupille dilatée d'un œil, l'anneau comprenant une pluralité d'éléments d'ancrage espacés le long de celui-ci et conçus pour entrer en prise avec le tissu situé au bord de la pupille afin que cette pupille soit maîtrisée et qu'elle conserve une taille souhaitée. Chaque élément d'ancrage peut comporter un élément de blocage, ainsi qu'un récepteur de blocage, l'élément de blocage entrant en prise avec le tissu et le tissu étant assujetti par l'entrée en prise de l'élément de blocage avec le récepteur de blocage.
PCT/US2011/052136 2010-09-17 2011-09-19 Anneau pour pupille WO2012037550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38381610P 2010-09-17 2010-09-17
US61/383,816 2010-09-17

Publications (1)

Publication Number Publication Date
WO2012037550A1 true WO2012037550A1 (fr) 2012-03-22

Family

ID=45831995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/052136 WO2012037550A1 (fr) 2010-09-17 2011-09-19 Anneau pour pupille

Country Status (1)

Country Link
WO (1) WO2012037550A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140221759A1 (en) * 2013-02-06 2014-08-07 Impex, Inc. Pupil expansion apparatus
US8900136B2 (en) 2013-03-15 2014-12-02 Beaver-Visitec International (Us), Inc. Iris expander
KR20150128762A (ko) * 2013-02-27 2015-11-18 수벤 바타챠르지 눈의 동공의 확대를 제공하고 그 축소를 방지하는 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002378A1 (fr) * 1993-07-13 1995-01-26 Kabi Pharmacia Ophthalmics, Inc. Cristallin artificiel a blocage d'haptique ameliore
US6620098B1 (en) * 1998-12-03 2003-09-16 Milvella Pty Ltd Device for dilating a pupil and/or maintaining a pupil in a dilated state
US20060047339A1 (en) * 2004-08-27 2006-03-02 Brown David C Intracapsular pseudophakic device
US20080269888A1 (en) * 2007-03-15 2008-10-30 Boris Malyugin Ring used in a small pupil phacoemulsification procedure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002378A1 (fr) * 1993-07-13 1995-01-26 Kabi Pharmacia Ophthalmics, Inc. Cristallin artificiel a blocage d'haptique ameliore
US6620098B1 (en) * 1998-12-03 2003-09-16 Milvella Pty Ltd Device for dilating a pupil and/or maintaining a pupil in a dilated state
US20060047339A1 (en) * 2004-08-27 2006-03-02 Brown David C Intracapsular pseudophakic device
US20080269888A1 (en) * 2007-03-15 2008-10-30 Boris Malyugin Ring used in a small pupil phacoemulsification procedure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140221759A1 (en) * 2013-02-06 2014-08-07 Impex, Inc. Pupil expansion apparatus
KR20150128762A (ko) * 2013-02-27 2015-11-18 수벤 바타챠르지 눈의 동공의 확대를 제공하고 그 축소를 방지하는 장치
US20150351736A1 (en) * 2013-02-27 2015-12-10 Suven Bhattacharjee Device providing enlargement and preventing collapse of the pupil of the eye
KR101865629B1 (ko) * 2013-02-27 2018-06-11 수벤 바타챠르지 눈의 동공의 확대를 제공하고 그 축소를 방지하는 장치
US10080558B2 (en) * 2013-02-27 2018-09-25 Med Invent Devices Private Limited Device providing enlargement and preventing collapse of the pupil of the eye
US8900136B2 (en) 2013-03-15 2014-12-02 Beaver-Visitec International (Us), Inc. Iris expander
US9579094B2 (en) 2013-03-15 2017-02-28 Beaver-Visitec International (Us), Inc. Iris expander
US10433828B2 (en) 2013-03-15 2019-10-08 Beaver-Visitec International (Us), Inc. Iris expander
US11389150B2 (en) 2013-03-15 2022-07-19 Beaver-Visitec International (Us), Inc. Iris expander

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