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WO1996029965A1 - Dispositif de dilatation d'une pupille et/ou de maintien d'une pupille a l'etat dilate - Google Patents

Dispositif de dilatation d'une pupille et/ou de maintien d'une pupille a l'etat dilate Download PDF

Info

Publication number
WO1996029965A1
WO1996029965A1 PCT/AU1996/000170 AU9600170W WO9629965A1 WO 1996029965 A1 WO1996029965 A1 WO 1996029965A1 AU 9600170 W AU9600170 W AU 9600170W WO 9629965 A1 WO9629965 A1 WO 9629965A1
Authority
WO
WIPO (PCT)
Prior art keywords
pupil
iris
eye
arms
engaging
Prior art date
Application number
PCT/AU1996/000170
Other languages
English (en)
Inventor
Edward John Milverton
Original Assignee
Milvella Pty. Ltd.
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
Priority claimed from AUPN2010A external-priority patent/AUPN201095A0/en
Priority claimed from AUPN4627A external-priority patent/AUPN462795A0/en
Application filed by Milvella Pty. Ltd. filed Critical Milvella Pty. Ltd.
Priority to AU49999/96A priority Critical patent/AU4999996A/en
Publication of WO1996029965A1 publication Critical patent/WO1996029965A1/fr
Priority to US09/209,370 priority patent/US6068643A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
    • A61B17/0231—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors for eye surgery

Definitions

  • TITLE "DEVICE FOR DILATING A PUPIL AND/OR MAINTAINING A PUPIL
  • the present invention relates to a device for dilating a pupil and/or maintaining a pupil in a dilated state.
  • the invention has been developed primarily for use in ophthalmic surgery and
  • the pupil is advantageous in many ophthalmic surgical procedures for the pupil to be dilated as much as possible.
  • a pupil is dilated when the iris retracts towards the outer
  • surgeon a larger area to manipulate surgical instruments in order to operate on the
  • a common method of dilating the pupil is the use of chemical eyedrops.
  • eyedrops are formulated to trigger the expansion of the iris, resulting in a dilated pupil.
  • One method to dilate and maintain a pupil in the dilated state involves making
  • sphincterotomy involves making an incision into the cornea through which a blade is
  • sphincterotomy is irreversible and results in a permanently disfigured iris. It is an object of the invention, to overcome or ameliorate at least some of the
  • said device including a
  • iris to retain the pupil in an expanded state
  • at least one positioning arm extending
  • positioning arms are provided at both the ends of the body.
  • the body is adapted to deform to a generally elongated or
  • the body also includes a guide tab extending outwardly from and
  • the positioning arm or arms each terminate in a
  • the formation provides a convenient gripping point for the
  • the device and also, if so desired, allows the positioning arms to be sutured to the eye.
  • the gripping formation or formations may include a hole through which a suture
  • each of the arm or arms include a proximal
  • the resilience of the body preferably provides a radially outwardly directed
  • the engaging formation is desirably formed so as to define
  • the body comprises a pair of circumferentially
  • the body is provided with a plurality of radially
  • each pair of flaps defining a portion of the recess
  • the body is preferably made from a material selected from the group including
  • prolene poly methyl methacrylate, nylon, silastic, silicon polyimide, polyamide or a
  • an insert of a second material is contained within the
  • the body is sized to provide an inner diameter in the
  • the recess has an axial depth of about 1.12mm and the guide tab extends
  • regions of weakness may be included in the body
  • the device is tinted for increased visibility to the surgeon.
  • the arcuate body has an included angle of
  • Figure 1 is a sectional side view of a human eye
  • Figure 2 is a sectional side view of the eye shown in Figure 1 showing the
  • Figure 3 is a plan view of the device shown in Figure 2 illustrated in an
  • Figure 4 is a side view of the device shown in Figure 3;
  • Figure 5 is a plan view of the device shown in Figure 3 in the elongated or
  • Figure 6 is a plan view of a second embodiment of the invention.
  • Figure 7 is a sectional side view of the device shown in Figure 6;
  • Figure 8 is a plan view of a third embodiment of the invention.
  • Figure 9 is a sectional side view of the device shown in Figure 8.
  • Figure 10 is a plan view of a fourth embodiment of the invention.
  • Figure 1 1 is a sectional side view of the device shown in Figure 10;
  • Figure 12 is a plan view of a fifth embodiment of the invention.
  • Figure 13 is a side view of the device shown in Figure 12;
  • Figure 14 is an inverted partial plan view of the device shown in Figure 12.
  • FIG. 1 there is shown a human eye having a cornea 10, sclera
  • iris 16 has an inner peripheral edge 22, the boundary of which defines the opening of
  • the iris known as the pupil 24 (the black circle in the centre of an eye).
  • pupil opening 24 to be as large as possible to permit access to the lens and other parts
  • the invention for dilating the pupil and/or maintaining the pupil in the dilated state.
  • the device 26 comprises a generally arcuate body 28 having first and second ends 35.
  • outer peripheral edge of the body has a recess 30 adapted to engage the inner peripheral edge 22 of the iris to retain the pupil in a dilated state.
  • positioning arms 34 which extend generally outwardly from the ends 35 of
  • the arms are more
  • Device 26 also includes guide tab 36 which extends from the
  • the arms 34 can each be seen to include a
  • proximal portion 38 adjacent to the body and a distal portion 40 substantially parallel
  • the formations 44 also allow the surgeon to suture the arms 34 to the
  • Holes can be provided through the formations through which the suture
  • the embodiment of the device shown in Figures 6 and 7 comprises a pair of
  • Each pair of flaps defines a portion of
  • a fifth embodiment of invention is shown in Figure 12 to 14. This is
  • each of the arms 34 which remain external the eye during use, are angled slightly
  • formations 44 are each provided with a pre-formed suture hole 54 which is adapted to
  • the arms 34 When viewed in plan, the arms 34 are angled slightly outwardly from the
  • the guide tab 36 is recessed below the guide tab 36 so as to provide two regions of weakness 52 which facilitate flexure of the device into the elongated position
  • each of the arms 34 is provided with a smoothly tapered surface 56. This lessens the
  • a lens replacement for example, a lens replacement.
  • the circumferential incision begins generally just
  • the cornea to finally open into the anterior chamber 12.
  • the incision 42 of approximately 2.5 to 5.5mm in width
  • the device 26 is then elongated
  • the device may be inserted in the elongated
  • guide tab 36 aids the insertion process.
  • the anterior chamber is filled with a visco-elastic fluid prior to
  • peripheral edge 22 of the iris is partially located in recess 30. This location is helped by guide tab 36 sliding over, and resting upon, the upper surface of the iris. The guide tab 36 also prevents the device from "falling" through the pupil opening during
  • This radial force is also sufficient to maintain the pupil in the dilated state
  • proximal and distal portions, 38 and 40 respectively are offset axially from
  • the device can easily be positioned parallel to, and adjacent with, the iris
  • surgical incision is generally offset so as to be above the plane of the iris edge.
  • the first is that it will dilate and hold in a
  • the device is introduced into the anterior chamber of the eye by a single incision, there
  • the incision may have to be made slightly
  • the device whilst maintaining the pupil in the dilated state, the device serves to effectively guard
  • the device will preferably be
  • the device can be manufactured in many sizes to cater for varying eye sizes

Landscapes

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

Abstract

L'invention concerne un dispositif (26) de dilatation d'une pupille (24) et/ou de maintien d'une pupille (24) à l'état dilaté. Ce dispositif se compose d'un corps généralement arqué (28), à deux extrémités (35). Le bord périphérique extérieur de ce corps est doté d'une structure d'enclenchement (30) qui s'enclenche dans le bord intérieur (22) d'un iris (16) afin de maintenir la pupille (24) à l'état dilaté, et d'au moins un bras de positionnement (34) s'étendant généralement vers l'extérieur depuis l'une des extrémités (35) du corps (28) de façon à rester à l'extérieur de l'÷il.
PCT/AU1996/000170 1995-03-27 1996-03-26 Dispositif de dilatation d'une pupille et/ou de maintien d'une pupille a l'etat dilate WO1996029965A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU49999/96A AU4999996A (en) 1995-03-27 1996-03-26 Device for dilating a pupil and/or maintaining a pupil in a dilated state
US09/209,370 US6068643A (en) 1996-03-26 1998-09-25 Device for dilating a pupil and/or maintaining a pupil in a dilated state

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN2010A AUPN201095A0 (en) 1995-03-27 1995-03-27 Device for dilating a pupil and/or maintaining a pupil in a dilated state
AUPN4627A AUPN462795A0 (en) 1995-08-07 1995-08-07 Device for dilating a pupil and/or maintaining a pupil in a dilated state

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/209,370 Continuation-In-Part US6068643A (en) 1996-03-26 1998-09-25 Device for dilating a pupil and/or maintaining a pupil in a dilated state

Publications (1)

Publication Number Publication Date
WO1996029965A1 true WO1996029965A1 (fr) 1996-10-03

Family

ID=25644889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000170 WO1996029965A1 (fr) 1995-03-27 1996-03-26 Dispositif de dilatation d'une pupille et/ou de maintien d'une pupille a l'etat dilate

Country Status (1)

Country Link
WO (1) WO1996029965A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032141A1 (fr) 1998-12-03 2000-06-08 Milvella Pty Ltd. Dispositif permettant de dilater une pupille et/ou de maintenir ladite pupille a l'etat dilate
US6648819B2 (en) * 2001-11-15 2003-11-18 Yau Wing Lee Pupil dilator
EP2713906A4 (fr) * 2011-06-01 2014-12-10 Insightra Medical Inc Dispositifs et procédés pour fixer un tissu
US9265502B2 (en) 2007-10-23 2016-02-23 Insightra Medical, Inc. Delivery assembly for resilient tissue clamp
US10149681B2 (en) 2007-10-23 2018-12-11 Insightra Medical, Inc. Devices and methods for securing tissue
US10667819B2 (en) 2016-01-18 2020-06-02 Insightra Medical, Inc. Delivery assembly for resilient tissue clamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130113A (en) * 1976-12-15 1978-12-19 Richards Manufacturing Co., Inc. Retractor
US4257406A (en) * 1979-05-18 1981-03-24 Schenk Alan G Iris retractor and pupil dilator
US4782820A (en) * 1987-10-22 1988-11-08 Woods Randall L Iris retaining device
US5163419A (en) * 1991-04-04 1992-11-17 Goldman Kenneth N Device for expanding the pupil of a human eye
US5267553A (en) * 1992-02-18 1993-12-07 Graether John M Pupil expander and method of using the same
US5433190A (en) * 1993-08-20 1995-07-18 Sunalp; Murad A. Eyelid speculum device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130113A (en) * 1976-12-15 1978-12-19 Richards Manufacturing Co., Inc. Retractor
US4257406A (en) * 1979-05-18 1981-03-24 Schenk Alan G Iris retractor and pupil dilator
US4782820A (en) * 1987-10-22 1988-11-08 Woods Randall L Iris retaining device
US5163419A (en) * 1991-04-04 1992-11-17 Goldman Kenneth N Device for expanding the pupil of a human eye
US5267553A (en) * 1992-02-18 1993-12-07 Graether John M Pupil expander and method of using the same
US5433190A (en) * 1993-08-20 1995-07-18 Sunalp; Murad A. Eyelid speculum device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 85-288090/46, Class P32; & SU,A,1 153 914, (EYE DISEASE RES INS, KUPO), 7 May 1985. *
DERWENT ABSTRACT, Accession No. H1325X/32, Class P31; & SU,A,489 508, (TULA REG HOSPITAL), 24 February 1976. *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032141A1 (fr) 1998-12-03 2000-06-08 Milvella Pty Ltd. Dispositif permettant de dilater une pupille et/ou de maintenir ladite pupille a l'etat dilate
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
US6648819B2 (en) * 2001-11-15 2003-11-18 Yau Wing Lee Pupil dilator
US9125656B2 (en) 2007-10-23 2015-09-08 Insightra Medical, Inc. Devices and methods for securing tissue
US9265502B2 (en) 2007-10-23 2016-02-23 Insightra Medical, Inc. Delivery assembly for resilient tissue clamp
US10149681B2 (en) 2007-10-23 2018-12-11 Insightra Medical, Inc. Devices and methods for securing tissue
US10258339B2 (en) 2007-10-23 2019-04-16 Insightra Medical, Inc. Devices and methods for securing tissue
EP2713906A4 (fr) * 2011-06-01 2014-12-10 Insightra Medical Inc Dispositifs et procédés pour fixer un tissu
US10667819B2 (en) 2016-01-18 2020-06-02 Insightra Medical, Inc. Delivery assembly for resilient tissue clamp

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