WO2005082302A1 - Dispositif de fermeture hermetique sous vide - Google Patents

Dispositif de fermeture hermetique sous vide Download PDF

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Publication number
WO2005082302A1
WO2005082302A1 PCT/AU2005/000270 AU2005000270W WO2005082302A1 WO 2005082302 A1 WO2005082302 A1 WO 2005082302A1 AU 2005000270 W AU2005000270 W AU 2005000270W WO 2005082302 A1 WO2005082302 A1 WO 2005082302A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum
manifold
sealing device
surgical
platter
Prior art date
Application number
PCT/AU2005/000270
Other languages
English (en)
Inventor
Geoffrey James Neilson
Original Assignee
Milvella Pty Limited
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 AU2004901049A external-priority patent/AU2004901049A0/en
Application filed by Milvella Pty Limited filed Critical Milvella Pty Limited
Publication of WO2005082302A1 publication Critical patent/WO2005082302A1/fr

Links

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
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00754—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments for cutting or perforating the anterior lens capsule, e.g. capsulotomes
    • 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
    • A61F9/008—Methods or devices for eye surgery using laser
    • A61F2009/00885—Methods or devices for eye surgery using laser for treating a particular disease
    • A61F2009/00887—Cataract
    • A61F2009/00889—Capsulotomy

Definitions

  • the invention relates to vacuum sealing devices and more particularly to a vacuum sealing device for the delivery of solutions to body surfaces or cavities.
  • BACKGROUND ART It is sometimes desirable, during the course of surgery, to isolate one part of the body from the rest. For example, it may be desirable to administer a chemically active or toxic substance to one part of the body without that substance contacting other parts of the body. In other instances, it may be advantageous to prevent secretions, infectious materials or contaminants from spreading outside of the locality of the area of operation.
  • the invention will be described in relation to isolating a surgical site by referring to the specific example of cataract surgery but it is to be understood that the invention is not limited thereto.
  • cataract surgery the human lens is removed from within the lens capsule and replaced by an artificial lens.
  • lens cortex and epithelial cells remain following the lens removal. Irrigation / aspiration is routinely used to remove the visible cortex remnants. It is unreasonable to expect all lens epithelial cells (LECs) which are bound to both the anterior and posterior capsule to be removed by this method. LECs which remain within the capsule have been shown to mutate and grow over the posterior surface of the implanted intra-ocular lens (IOL) thus causing posterior capsule opacification (PCO).
  • IOL intra-ocular lens
  • PCO posterior capsule opacification
  • lens capsule fibrosis occurs and these lOLs have been shown to cause vision problems particularly at night due to reflections from these edges. It has been proposed that cytotoxic chemicals can be used to destroy these epithelial cells, however, there is a risk that these chemicals damage other intraocular structures. Research is currently underway into using accommodating lOLs, and clear lens extraction for the correction of refractive errors. However, for these technologies to be successful chronically, the lens capsule must remain flexible and free of fibrosis.
  • a surgical vacuum sealing device comprising a flexible vacuum platter having an underside which has a periphery, a vacuum channel or manifold formed around the periphery of the underside of the platter and a flexible hollow sleeve extending from the underside of the platter to the exterior of the device, the vacuum manifold being defined by inner and outer walls with one having a plurality of spaced apart projections or deformations directed towards the other wall so that upon the application of a vacuum, a multitude of small vents are created under the manifold ensuring that the vacuum is evenly distributed.
  • the projections are vertical ribs spaced around the inner wall of the manifold.
  • one wall of the manifold has a castellated edge which contacts the opposite wall.
  • FIG. 1 is a perspective view of a capsule sealing device according to one embodiment of the present invention
  • Fig. 2 is a top plan view of the device shown in Fig. 1
  • Fig. 3 is a cross-section through line A-A of Fig. 2
  • Fig 4 is a cross-section through line B-B of Fig. 2
  • Fig. 5 is a bottom plan view of the device shown in Fig. 1
  • Fig. 6 is a cross-section through line C-C of Fig . 5
  • Fig. 7 is an enlarged view of the seal circled in Fig. 3.
  • a capsule sealing device 110 comprises a flexible sleeve 111 which terminates in a vacuum platter 112 and opens onto the underside of the platter 112 thereby creating a sealed fluid channel from the underside through the interior of the sleeve.
  • the sleeve 111 and the platter 112 are preferably made from silicone or polyurethane or other soft and flexible materials and the internal surface of the sleeve may be coated with a slippery substance such as a hydro gel.
  • the platter 112 and the distal portion of the sleeve 111 to which it is attached at a predetermined angle (in this instance 20°) must be small enough and flexible enough to pass through an incision in a cornea.
  • the sleeve 111 incorporates a suction tube 116 and a throat 113.
  • the throat 113 leads from a rectangular (or other shaped) flange 114 to the underside or interior of the platter 112.
  • the somewhat oversized flange acts as a shield, preventing fluid flowing out of the top of the throat from falling back into the eye.
  • the throat 113 provides a passageway through which instruments or fluids or conduits may access the interior of the capsule through the corneal incision.
  • the sleeve 111 and throat 113 are relatively flat to minimise wound distortion.
  • the join 115 between the sleeve 111 and the platter 112 may be slightly thickened or reinforced to provide extra strength in this area.
  • the suction tube 116 is located along one edge of the sleeve 111 and may be moulded into it.
  • the suction tube 116 provides a sealed passageway and fluidic communication with the suction ring or channel 120.
  • the communication between the suction ring or channel 120 and suction tube 116 is shown in Fig. 4.
  • the suction tube 116 may be used for a variety of purposes.
  • the suction tube 116 may serve as a guide for an insertion rod.
  • the throat may also serve this purpose.
  • Such a rod is inserted into the tube 116 for the purpose of manoeuvring the device through a corneal incision and into position on the lens capsule.
  • the suction ring 120 which acts as a seal and surrounds the platter 112 comprises a pair of concentric flexible lips 121 which surround an annular channel or manifold 122.
  • the flat and flexible undersides 123 of the lips 121 allow the platter 112 to adhere to and seal against the lens capsule with the platter 112 surrounding the capsulorhexis.
  • the suction ring 120 thus forms an inverted "U" cross-section a restricted throat 125 formed by the flange 124. It will be appreciated that the suction platter 112 has been disclosed as disc shaped, but may be fabricated as any convenient plan form such as oval, rectangular or irregular to suit any surface shape or confirmation.
  • the suction channel 120 has been disclosed as a ring, but its primary characteristic is merely that it confirms to the shape of the underside of the suction platter 112, regardless of what shape the platter happens to be.
  • the manifold 122 is defined in part by inner wall 130 and outer wall 130a.
  • the inner channel wall 130 has a plurality of spaced apart vertical ribs 131 which project into the channel 122. In this instance, there are 44 such ribs 131 but there is no rib at the vacuum port 132 (see Fig. 5).
  • Each rib 131 may have a base width of 0.15mrn and project 0.10mm into the channel 122 with a generally curved shape.
  • the device distorts and the horizontal flange moves to contact the vertical ribs 131 on the opposite wall, resulting in a multitude of small vents under the manifold or channel ensuring that the vacuum is evenly distributed.
  • a soft material can be used as the cross-section of the vacuum channel can be circular and the walls on each side of the vacuum channel do not need to be self supporting under vacuum.
  • the horizontal flange 124 can have a castellated edge which distorts and contacts the opposite wall (without vertical ribs), providing a multitude of vents below a somewhat circular cross-section, manifold or channel. So that the invention may be better understood the following dimensions are intended to serve as examples and not as limitations to the scope or spirit of the invention.
  • the maximum diameter (D) of the platter is about 7mm.
  • the length (L) of the flange is about 3.5mm.
  • the width (W2) of the throat is about 2.35mrn.
  • the height (H) of the throat is about 0.43mm.
  • the width (W1) of the central channel 122 of the suction ring 120 is about 0.2mm.
  • the distance (D1) between the inner and outer extremities of the lips 121 is about 1 mm.
  • the thickness (T1) of the lips 121 is about 0.1mm.
  • the angle of inclination of the lips 121 with respect to a referenced horizontal plain is about 15° on each side.
  • the thickness (T) of the upper surface of the suction disc 112 is approximately 0.1 mm.
  • the sleeve 111 is inclined with respect to a reference horizontal plain by about 20°. As shown in Fig. 3, the flange 114 is inclined by about 30° to a reference horizontal plane.
  • the suction tube 116 extends by a distance (LS) of about 10mm from the face of the flange 114.
  • the suction tube 116 (which may be insert moulded into the suction disc assembly) has an outside diameter of about 0.63mm and an inside diameter of about 0.3mm.
  • the baseline distance (BD) between the centre of the platter 112 and the end of the sleeve 111 is about 7.2mm.
  • the width (W3) of the sleeve 111 is about 3mm.
  • the external thickness (ET) of the sleeve is about 0.63mm.
  • the wall thickness of the throat is about 0.1 mm.
  • the vacuum sealing device 10 may be used on a body surface to limit the application of a fluid (or gas) to a defined area. Once such application is LASEK surgery, where alcohol is applied to the cornea of the eye to loosen the epithelium before laser treatment.
  • a similar device to that disclosed here with an approximate 10mm inner seal diameter allows alcohol to be delivered via this sealed system and applied to a limited area of the cornea. This limits the risk of the alcohol solution affecting the surrounding ocular tissues.

Landscapes

  • 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

L'invention concerne un dispositif de fermeture hermétique sous vide chirurgicale (110) qui comprend une plaque souple sous vide (112) possédant un collecteur sous vide (122) autour de la périphérie de la partie inférieure de la plaque et un manchon creux souple (111) s'étendant à partir de la partie inférieure de la plaque (112) vers l'extérieur du dispositif (110). Le collecteur sous vide (122) est défini par des parois interne et externe (130 et 130a), avec une paroi possédant plusieurs projections ou déformations espacées entre elles (131) dirigées vers les autres parois de sorte que lors de l'application du vide une multitude de petites aérations sont créées sous le collecteur assurant une répartition égale du vide.
PCT/AU2005/000270 2004-03-01 2005-02-25 Dispositif de fermeture hermetique sous vide WO2005082302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004901049A AU2004901049A0 (en) 2004-03-01 Vacuum sealing device
AU2004901049 2004-03-01

Publications (1)

Publication Number Publication Date
WO2005082302A1 true WO2005082302A1 (fr) 2005-09-09

Family

ID=34891658

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2005/000270 WO2005082302A1 (fr) 2004-03-01 2005-02-25 Dispositif de fermeture hermetique sous vide

Country Status (1)

Country Link
WO (1) WO2005082302A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8702698B2 (en) 2008-05-15 2014-04-22 Mynosys Cellular Devices, Inc. Ophthalmic surgical device for capsulotomy
US10070989B2 (en) 2014-02-03 2018-09-11 Mynosys Cellular Devices, Inc. Capsulotomy cartridge
US10206816B2 (en) 2011-10-21 2019-02-19 Mynosys Cellular Devices, Inc. Capsulotomy device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE422275B (sv) * 1980-03-20 1982-03-01 Johan Magnus Ullman Narkosmask
US5727569A (en) * 1996-02-20 1998-03-17 Cardiothoracic Systems, Inc. Surgical devices for imposing a negative pressure to fix the position of cardiac tissue during surgery
WO2003022191A1 (fr) * 2001-09-11 2003-03-20 Geoffrey James Neilson Dispositif de fermeture etanche sous vide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE422275B (sv) * 1980-03-20 1982-03-01 Johan Magnus Ullman Narkosmask
US5727569A (en) * 1996-02-20 1998-03-17 Cardiothoracic Systems, Inc. Surgical devices for imposing a negative pressure to fix the position of cardiac tissue during surgery
WO2003022191A1 (fr) * 2001-09-11 2003-03-20 Geoffrey James Neilson Dispositif de fermeture etanche sous vide

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8702698B2 (en) 2008-05-15 2014-04-22 Mynosys Cellular Devices, Inc. Ophthalmic surgical device for capsulotomy
US9254224B2 (en) 2008-05-15 2016-02-09 Mynosys Cellular Devices, Inc. Ophthalmic surgical device for capsulotomy
US9271868B2 (en) 2008-05-15 2016-03-01 Mynosys Cellular Devices, Inc. Ophthalmic surgical device for capsulotomy
US10278760B2 (en) 2008-05-15 2019-05-07 Mynosys Cellular Devices, Inc. Ophthalmic surgical device for capsulotomy
US11406439B2 (en) 2008-05-15 2022-08-09 Centricity Vision, Inc. Ophthalmic surgical device for capsulotomy
US10206816B2 (en) 2011-10-21 2019-02-19 Mynosys Cellular Devices, Inc. Capsulotomy device
US10736777B2 (en) 2011-10-21 2020-08-11 Centricity Vision, Inc. Capsulotomy device
US11426308B2 (en) 2011-10-21 2022-08-30 Centricity Vision, Inc. Capsulotomy device
US12004998B2 (en) 2011-10-21 2024-06-11 Centricity Vision, Inc. Capsulotomy device
US10070989B2 (en) 2014-02-03 2018-09-11 Mynosys Cellular Devices, Inc. Capsulotomy cartridge

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