WO2017089983A1 - Dispositif de maintien de chambre antérieure destiné à être utilisé en chirurgie oculaire - Google Patents

Dispositif de maintien de chambre antérieure destiné à être utilisé en chirurgie oculaire Download PDF

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Publication number
WO2017089983A1
WO2017089983A1 PCT/IB2016/057098 IB2016057098W WO2017089983A1 WO 2017089983 A1 WO2017089983 A1 WO 2017089983A1 IB 2016057098 W IB2016057098 W IB 2016057098W WO 2017089983 A1 WO2017089983 A1 WO 2017089983A1
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WO
WIPO (PCT)
Prior art keywords
distal end
end portion
anterior chamber
incision
eye
Prior art date
Application number
PCT/IB2016/057098
Other languages
English (en)
Inventor
Brett John KARLSON
Original Assignee
Karlson Brett John
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 Karlson Brett John filed Critical Karlson Brett John
Publication of WO2017089983A1 publication Critical patent/WO2017089983A1/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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B17/3431—Cannulas being collapsible, e.g. made of thin flexible material
    • 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
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
    • A61B2017/3482—Means for supporting the trocar against the body or retaining the trocar inside the body inside
    • A61B2017/3484—Anchoring means, e.g. spreading-out umbrella-like structure
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0018—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in elasticity, stiffness or compressibility

Definitions

  • THIS INVENTION relates to an anterior chamber maintainer device for use in eye surgery, particularly, during intra-ocular surgery, and also to a method of performing intra-ocular surgery.
  • Intra-ocular surgery for example, anterior segment surgery, particularly cataract surgery has progressed over the last few decades from a crude, uncontrolled procedure, to a sophisticated one with vastly improved control. Particularly for cataract surgery, this progress is largely due to the use of Phaco-emulsification machines, hereinafter referred to as "phaco machines", and small incision cataract surgery.
  • Phaco-emulsification machines hereinafter referred to as "phaco machines”
  • small incision cataract surgery In the example of cataract surgery, an incision is made in the peripheral part of a clear cornea.
  • the incision is typically rectangular and has dimensions of approximately 2mm wide by 1 ,5mm deep though it will be appreciated that the dimensions of the incision vary somewhat according to the size of a phaco hand-piece tip associated with the phaco machine, preferences of the surgeon, etc.
  • the phaco hand-piece tip in then inserted into the incision and the phaco machine essentially controls the intra-ocular environment via the hand-piece which has thus led to much greater safety.
  • intra-ocular pressure may now be maintained within a narrow range by the phaco machine, leading to a much lower risk of complications such as supra-choroidal hemorrhage. This complication was encountered much more commonly in the past, and is due in part, to a sudden lowering of the intra-ocular pressure.
  • Potential complications associated with sudden loss of volume and intraocular pressure include supra-choroidal hemorrhage, acute posterior vitreous detachment, retinal detachment, capsular rupture, lOL/endothelial touch, iris prolapse and pupillary constriction (particularly in cases of Intraoperative Floppy Iris Syndrome), vitreous prolapse in cases where the integrity of the posterior capsule is compromised.
  • a conventional anterior chamber maintainer is typically a device which comprises a cannula or tube which is inserted into the anterior chamber of the eye though a separate incision, and connected to a continuous infusion of fluid via suitable tubing.
  • the continuous flow of fluid from the cannula to the anterior chamber is greater than the leakage, which thus maintains the anterior chamber.
  • these conventional anterior chamber maintainers undesirably require additional incision, introduce a lot of turbulence in the anterior chamber, and causes wasting of fluid and washing of visco-elastics continually out of the eye. It is thus an object of the present invention at least to address and/or ameliorate the aforementioned problems and difficulties and address the drawbacks associated with conventional anterior chamber maintainers.
  • an anterior chamber maintainer device for use in eye surgery, wherein the device comprises: a flexible body defining a distal end portion having a distal end opening, a proximal end portion having a proximal end opening, and a passage extending therebetween, wherein the body is deformable between a collapsed state is which the passage between the distal end opening and the proximal end opening is substantially closed, and an open state in which the passage between the distal end opening and the proximal end opening is substantially open for insertion and removal of instruments therethrough, in use; an anchor formation to anchor the body removably in an incision made in an eye such that the distal end portion is in communication with an anterior chamber of the eye, in use; and a mouth member located adjacent the proximal end portion of the body, wherein the mouth member is more rigid than the flexible body.
  • the distal end portion may be configured to be deformable under pressure from fluid in the anterior chamber of the eye so as to close the distal end opening substantially and deform the device to the collapsed state, in use.
  • the device may comprise a closure member located adjacent the distal end portion of the body, and wherein the closure member is more rigid than the flexible body and is configured to close the distal end opening substantially in a resilient fashion thereby maintaining the device in the collapsed state.
  • the closure member may comprise a pair of laterally connected opposed plates resiliently biased toward each other.
  • the mouth member may be ring-like and may be configured to maintain the proximal end opening in an open state.
  • the mouth member may comprise a pair of spaced apart mouth members attached to the proximal end portion of the body.
  • the mouth member protrudes from the proximal end portion so as to stand proud of the incision, in use. In this way, the mouth member limits travel of the device, for example, axially in a distal direction into the anterior chamber of the eye, in use. In addition, the mouth member makes it easier for a surgeon to locate the incision made thus preventing multiple incisions being made and/or the incision tearing further, etc. Moreover, the mouth member and/or the body may be constructed of a material of a colour to enable a surgeon to easily locate the incision, in use.
  • the device may comprise at least one support member located longitudinally at least partly along a length of the body, wherein the support member is more rigid than the flexible body.
  • the term "rigid" in the context of the specification may be understood to refer to a material being constructed of a material which is more rigid or by construction, for example, same material but thicker.
  • the flexible body may be in the form of a pair of opposed flexible planar members which are flanked by a pair of substantially parallel support members which extend longitudinally along all or a part of the length of the body.
  • the support members may be connected to the mouth member.
  • the body may define a substantially funnel-shaped passage between the proximal and distal end portions, and wherein the mouth member is angled obliquely towards the distal end portion, for example, so as to facilitate ease of insertion and/or extraction of instruments from the incision.
  • the anchor formation may comprise a circumferentially extending ridge located adjacent the distal end portion so as to limit displacement of the device from the eye in a proximal direction and thus out of the eye, in use.
  • the anchor formation may be configured to engage with tissue of the cornea inside the anterior chamber and adjacent the incision so as to limit travel of the device out of the incision, in use.
  • anchoring the body removably in the incision essentially provides location of the distal end portion in the anterior chamber of the eye and limits unwanted travel or displacement of body axially in one or both of proximal and distal directions, i.e. into or out of the eye, unless of course for the insertion and extraction of the device, in use.
  • this may comprise removably anchoring the device to the corneal tissue surrounding the incision as mentioned below, or, as described above, limiting displacement in the proximal direction.
  • the device may comprise a plurality of anchor formations in the form of protuberances which project from an external surface of the body so as to anchor the body in a removable fashion in the incision, for example, to limit displacement in both proximal and distal directions.
  • the bumps may be configured to engage with tissue surrounding the incision.
  • the anchor formations may be are selected from a group comprising hooks, barbs, lips, bumps, and ridges which are suitable to enable insertion of the device into the eye but limit removal thereof.
  • the anchor formations may be flexible.
  • the mouth member may comprise a groove or lip for attachment of a cartridge of a lens injector.
  • the passage may be shaped and/or dimensioned so as to receive a keratome, or a similar surgical implement therein.
  • a method of performing intra-ocular surgery comprising: providing a device of the type described; locating a the device axially through the passage of the device; making an incision in the cornea of the eye with the keratome, wherein insertion of the keratome into the cornea causes the device to be inserted into the incision such that the distal end portion is in communication with the anterior chamber of the eye and the mouth member limits further travel of the device into the incision; removing the keratome from the incision, wherein the anchor formations anchor the device in the incision preventing the same from dislodgment when the keratome is removed, wherein in the absence of instruments, the distal end portion of the device closes so as to substantially maintain fluid volume and or pressure in the anterior chamber, and wherein insertion of instruments into the device via the proximate portion substantially opens the passage thereof.
  • the method comprises removing the device from the eye by: displacing the mouth portions which stand proud of the incision which causes dislodgement of the one or more anchor formations; and withdrawing the device from the incision.
  • Figure 1 shows a part sectional view through a portion of a human eye
  • Figure 2 shows a top view of a portion of a human eye with an incision in the cornea thereof, as well as a side view of a portion thereof showing said incision;
  • Figure 3 shows a perspective view of a device in accordance with an example embodiment of the invention
  • Figure 4 shows a perspective view of a device in accordance with an example embodiment of the invention on a keratome
  • Figure 5 shows a device in accordance with an example embodiment of the invention in use in a cornea of a human eye
  • Figure 6 shows a perspective view of another device in accordance with an example embodiment of the invention
  • Figure 7 shows a front view the device of Figure 6
  • Figure 8 shows an end view the device of Figure 6
  • Figure 9 shows another perspective view of the device of Figure 6;
  • Figure 10 shows a sectional view through the device of Figure 6;
  • Figure 11 shows a perspective view of the device of Figure 6 on a keratome
  • Figure 12 shows a device of Figure 6 in use in a cornea of a human eye.
  • FIG. 1 a section of a portion of the human eye is generally indicated by reference numeral 10.
  • an incision 18 in Figure 2
  • a hand-piece tip of a phaco machine (not shown) is inserted conventionally into the incision 18 and thus into the anterior chamber 16 of the eye 10.
  • the phaco machine typically maintains the volume and/or pressure of the fluid in the anterior chamber 16, however, in instances where the tip is removed from the incision 18, the fluid from said anterior chamber 16 may rapidly escape causing various problems as described above.
  • the device 20 comprises a flexible body 22, a pair of lateral supporting members 24, and a pair of mouth members 26.
  • the body 22 comprises a pair of opposed optionally clear, flexible planar plates or panels which are generally square or rectangular, and are constructed from a silicone, acrylic, plastic/polymer material, or the like.
  • the body 22 typically has a distal end portion 22.1 having a distal end opening, a proximal end portion 22.2 having a proximal end opening, and a passage or lumen 22.3 extending between the distal end portion 22.1 and the proximal end portion 22.2. It will be understood that the passage 22.3 is collapsible due to the flexibility of the body 22 but maybe easily opened, in use, as will be described below.
  • the lateral support members 24 extend along the sides of the body 22 substantially along the length L of the same.
  • the support members 24 further comprise anchor formations 28 provided thereon so as to anchor the device 20 in an incision wound as will be described below.
  • the anchor formations 28 may be in the form of a sharp protuberances, lips, or hooks.
  • the lateral support members 24 may be constructed of a material which is more rigid or stiffer than the body 22, for example, a plastic or polymer material which is harder than the material from which the body 22 is constructed.
  • the mouth members 26 are substantiality identical U-shaped members which are provided adjacent the proximal end portion 22.2 of the body 22.
  • the mouth members 26 are also constructed of a stiffer or more rigid material than that of the body 22 such that it allows for at least the proximal end portion 22.2, and thus the passage 22.3 adjacent said proximal end portion 22.1 , to be substantially open.
  • the mouth members 26 may have a slightly larger width than the proximal end portion 22.2, as will be discussed below.
  • the mouth members 26 may be constructed of a material which is more rigid or stiffer than the body 22, for example, a plastic or polymer material which is harder than the material from which the body 22 is constructed.
  • the mouth members 26 will have to assume a fairly round shape when the hand-piece is inserted, and in this regard, the mouth members 26 are flexible, in some instances resiliently flexible, enough to do so.
  • the lateral support members 24 and the mouth members 26 may be constructed of a similar material and may be attached to each other.
  • the mouth members 26 maybe spaced slightly from each other spaced by the body 22 at zones 22.4 and 22.5 so as to facilitate the removal of the device 20 in use as will be described below.
  • the device 20 is shaped and/or dimensioned and/or configured so as to fit onto a keratome 29.
  • the passage 22.3 is shaped and configured for location on the keratome 29.
  • the device 20 may have a length L of approximately 2mm and a width W approximately 2mm.
  • the body 22 comprising two plates of flexible material which are laterally attached to the support members 24, it will be appreciated that in some example embodiments (not shown) the body 22 maybe constructed of single flexible tube-like body to which support members 24 are attached. Similarly, it will be appreciated that in other example embodiments, the support members 24 may be lateral portions of the body 22 which are treated so as to be stiffer than the rest of the body, for example, chemically treated. Similar considerations may be applicable to the mouth members 26.
  • the mouth member 26 may be in the form of a single ringlike member located at the proximal end portion 22.2 of the body 22.
  • end of the side members 24 adjacent distal ends of the support bars 24 taper toward each other slightly to make the distal end opening 22.1 slightly narrower. This would remove the tendency for the inner edges of the corneal wound to push on the support members 24, and keep the distal opening 22.1 open, when it should be closed.
  • the device 20 is located on a keratome 29.
  • the tip of the keratome 29 is axially located through the passage 22.3 of the proximal end portion 22.2 such that the distal end portion 22.1 is closest to the end tip of the keratome 29.
  • the keratome 29 is then used to make an incision in the cornea 14 and as the keratome 29 is inserted through the cornea 14, the device 20 is driven into the incision 18 until the distal end portion 22.1 is in communication with the anterior chamber 16 and the mouth members 26 are flush with the cornea 14.
  • the shaped and integrity of the wound/incision 18 is maintained, which shape and integrity is often undesirably compromised by the naked insertion of tools and/or instruments therethough or on other words sans the device 20.
  • the mouth members 26 limit the travel of the device 20 into the eye 10 and thus prevent the device 20 from being pushed into the anterior chamber 16.
  • the mouth members 26 typically sit proud of the cornea 14 as can be seen in Figure 5.
  • the anchor formations 28 assist in anchoring the device 20 within the incision 18 so as to prevent undesired removal of the device 20 from the incision 18.
  • a surgeon may insert tools and/or instruments into the anterior chamber 16 by inserting them through the proximal end portion 22.2, kept substantially open by the mouth members 26.
  • the tools are driven through the passage 22.3 which when collapsed, opens so as to allow the said tools to pass therethrough and into the anterior chamber 16 via the normally collapsed distal end portion 22.1 .
  • the passage 22.3 particularly the distal end portion 22.1 of the body 22 in communication with the anterior chamber 16 typically closes so as to maintain fluid pressure and volume within the anterior chamber 16 by preventing the fluid in the anterior chamber 16 from escaping through the passage 22.3.
  • the device 20 acts as a valve to prevent fluid loss from the anterior chamber 16 when tools removed from the passage 22.3 during conventional surgical procedures and as well as a port for receipt and extraction of tools from the chamber 16.
  • the body 22 may be constructed from a material which is flexibly collapsible in response to exposure to the pressure present in the anterior chamber 16.
  • the surgeon merely would draw the mouth members 26 towards each other and deform the device 20 about portions 22.4 and 22.5 of the body so as to displace the members 24 and thus dislodge the anchor formations 28 from location in the wound/incision 18.
  • the device 20 is then withdrawn from the eye 10.
  • the device 20 would be removed by pulling on the point where the split in the mouth members 26 are, bending the side members towards each other, thus releasing pressure on the formations 28.
  • FIG. 200 Another example embodiment of a surgical device in the form of an anterior chamber maintainer device in accordance with an example embodiment of the invention is generally indicated by reference numeral 200.
  • the surgical device 200 is substantially similar to the device 20 and thus in the description which follows, the same reference numerals will be used to indicate same parts.
  • the device 200 differs from the device 20 in that it does not comprise the lateral support members 24 but is of a unitary construction from a flexible material such as silicone.
  • the mouth member 226 of the device 200 is in the form of a continuous ring encircling the periphery of the proximal end portion 222.2 in a proud fashion.
  • the ring 226 essentially keeps the device 200 from slipping into the incision distally, as alluded to above, and keeps the proximal end opening and passage 222.3 in an open state for ease of insertion of distal ends of instruments into the anterior chamber of the eye, in use. It will be noted that the ring 226 also helps guide distal ends of instruments through the device 200 into the anterior chamber, through the incision in which the device 200 is located.
  • the body 222 of the device 200 is generally funnel-shaped between the proximal end portion 222.2 and the distal end portion 222.1 to guide and facilitate ease of insertion and removal of instruments through the device 200 and into the anterior chamber of the eye during a procedure.
  • the device 200 comprises a plurality of additional anchor formations in the form of a plurality of protuberances such as studs or bumps 228 disposed on an outer surface of the body 22 so as to facilitate anchoring the device 200 in an incision made by the keratome 29. This is useful to prevent slippage of the device 200 from being anchored in the eye, in use.
  • the device 200 further comprises a closure member 230 disposed adjacent the distal end portion 222.1 to keep the distal end opening in a normally collapsed or closed state, particularly once in the anterior chamber.
  • the member 230 may best be seen in Figure 9.
  • the closure member 230 may be configured to resiliently bias the distal end portion 222.1 /distal end opening to the collapsed state so as to maintain pressure of fluid in the anterior chamber, in use.
  • the closure member 230 may be in the form of a loop of more rigid material than the rest of the body 222 but having laterally connected substantially parallel plates 230.1 and 230.2 in an opposed configuration to close the distal end opening in a resilient fashion.
  • the distal end opening of the device 200 is kept closed in the collapsed state whilst the device 200 is in the anterior chamber eye thus maintaining pressure therein by preventing fluid from escaping the anterior chamber of the eye, in use, but providing a passage for insertion and removal of instruments into the anterior chamber in the fashion as described above.
  • the closure member 230 limits the amount of fluid lost from the anterior chamber during a procedure thus maintaining the same.
  • the closure member 230 may be selected to close the distal opening in response to external pressure thereon from fluid in the anterior chamber.
  • the member 230 may be of a pre-determined thickness and/or shaped and/or dimensioned to close the distal end opening upon exposure to the pressure of fluid in the anterior chamber.
  • the plates 230.1 and 230.2 may be around 0.075mm thick. However, as the pressure in the anterior chamber varies, the thickness of the plates 230.1 , 230.2 may vary. The important aspect is that the plates 230.1 and 230.2 will oppose and thus close the distal end opening when the pressure inside the anterior chamber exceeds the pressure outside the same.
  • the mouth member 226 and the closure member 230 may be constructed integrally with the body 22 and may simply be more rigid by being thicker. Alternately, the members 226 and 230 may be attached to the body 22.
  • the ring 226 may be a rigid ring or may be a flexible ring, for example, which tends obliquely towards the distal end portion 222.1 as can be seen in Figure 8 so as to sit more flushly on the surface of the eye. It will be appreciated to those skilled in the field of invention that in the context of the specification, should a part be defined as "more rigid", it will be appreciated that it may possess such property in question due to construction and/or materials selected in in construction thereof.
  • the ring 226 may be constructed of the same material as the body 222 but may be thicker so as to be more rigid than the body 222, whereas in some example embodiments, the ring 226 may be constructed of a hardened plastic or metal and the body 222 constructed from silicone, as the case may be.
  • the device 200 also serves as a port/valve, preventing egress of fluid and visco-elastic from the anterior chamber, protection around the incision, and as a guide for insertion of intra-ocular lenses and instruments.
  • the present invention provides a device which assists in prevent leakage of fluid from the anterior chamber when removing a tool from the cornea thereby facilitating the maintenance of a more constant volume and pressure in said anterior chamber.
  • the invention also provides protection of the surgical wound/incision in the cornea, particularly the delicate Descemet's membrane, which is often partially stripped by insertion of instruments through the wound.
  • the invention facilitates maintenance of the shape and form of the wound/incision with a smooth, slippery surface, allowing easier insertion of an intra-ocular lens and hand-piece.
  • the device may allow for attachment of a cartridge of a lens inserter, and easier and more reliable insertion.
  • the pupil of the patent often constricts during surgery when disturbed by currents of fluid in the anterior chamber (undesirable), and the iris often prolapses out through the wound when a hand-piece is removed (undesirable).
  • the device as described herein at least seeks to reduce the amount of fluid flowing through the anterior chamber, and thus prevent iris prolapse.
  • the present invention as described herein at least addresses the drawback associated with conventional anterior chamber maintainer systems which positively seek to maintain the pressure of the anterior chamber of the eye, often with unsatisfactory results.

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

Abstract

La présente invention concerne un dispositif de maintien de chambre antérieure (20, 200) destiné à l'utilisation en chirurgie oculaire, par exemple, la chirurgie de la cataracte, où il est nécessaire de maintenir la pression de la chambre antérieure de l'œil. Le dispositif (20, 200) comprend un corps flexible (22, 222) définissant une partie d'extrémité distale (22.1, 222.1) présentant une ouverture, une partie d'extrémité proximale (22.2, 222.2) présentant une ouverture, et un passage s'étendant entre elles. Le corps (22, 222) est déformable entre un état replié où le passage est sensiblement fermé, et un état ouvert dans lequel le passage est sensiblement ouvert pour l'insertion et le retrait d'instruments à travers, durant l'utilisation. Le dispositif (20, 200) comprend également des formations d'ancrage pour ancrer le corps (22, 222) dans une incision effectuée dans l'œil de sorte que la partie d'extrémité distale (22.1, 222.1) se trouve en communication avec une chambre antérieure de l'œil ; un élément d'ouverture localisé de manière adjacente à la partie d'extrémité proximale (22.2, 222.2), l'élément d'ouverture étant plus rigide que le corps flexible (22, 222).
PCT/IB2016/057098 2015-11-24 2016-11-24 Dispositif de maintien de chambre antérieure destiné à être utilisé en chirurgie oculaire WO2017089983A1 (fr)

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ZA201508637 2015-11-24
ZA2015/08637 2015-11-24

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Cited By (1)

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US20200345394A1 (en) * 2019-05-01 2020-11-05 Richard B. Foulkes Protector for a Trans-Corneal Incision

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WO2011037941A1 (fr) * 2009-09-22 2011-03-31 Doheny Eye Institute Systèmes et dispositifs à canule ajustable
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US6440063B1 (en) * 1997-04-30 2002-08-27 University Of Massachusetts Surgical access port and laparoscopic surgical method
US20120209077A1 (en) * 2007-10-05 2012-08-16 Tyco Healthcare Group Lp Flexible access device for use in surgical procedures
US20090326332A1 (en) * 2008-06-25 2009-12-31 Tyco Healthcare Group Lp Button port
DE102009032186A1 (de) * 2009-07-07 2011-01-27 Geuder Ag Vorrichtung zum Einführen eines Mediums oder eines Instruments in den menschlichen Körper
US20110034778A1 (en) * 2009-08-06 2011-02-10 Tyco Healthcare Group Lp Elongated seal anchor for use in surgical procedures
WO2011037941A1 (fr) * 2009-09-22 2011-03-31 Doheny Eye Institute Systèmes et dispositifs à canule ajustable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200345394A1 (en) * 2019-05-01 2020-11-05 Richard B. Foulkes Protector for a Trans-Corneal Incision

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