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
  • A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
  • A61B17/132—Tourniquets
• • 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
  • A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
  • A61F9/0017—Introducing ophthalmic products into the ocular cavity or retaining products therein implantable in, or in contact with, the eye, e.g. ocular inserts

Definitions

• the invention relates to an eye surgical instrument for at least partly pressing closed an incision made in an eye during and/or after removal of a cannula from the incision.
• an incision is created in an eye, which incision can run through the conjunctiva and sclera.
• a cannula is introduced into this incision, through which a variety of instruments can be inserted into the eye.
• the cannula is removed from the eye again.
• this is done by grasping the cannula with a pair of tweezers and then pulling it out of the incision.
• the incision is deformed, as a result of which it may remain open. This results in pressure loss, as fluid can leak from the eye. For this reason, in practice, the incision is often pressed closed when the cannula is out.
• the invention contemplates providing an eye surgical instrument.
• the invention contemplates obtaining an eye surgical instrument whereby at least one of the disadvantages mentioned is counteracted.
• the instrument comprises a substantially elongate supporting arm and a press-on part connected with the supporting arm, which is designed to enable a pressure force to be exerted on the conjunctiva of an eye, the press-on part being connected to the supporting arm such that the press-on part extends sidewards away from the supporting arm.
• the press-on part Due to the press-on part extending sidewards away from the supporting arm, a surgeon does not need to press the substantially elongated supporting arm in its longitudinal direction towards the eye, but the surgeon can press the supporting arm substantially sidewards towards the eye to have the press-on part exert a greater pressure force on the conjunctiva. As a result, the eye surgical instrument becomes relatively easy to handle and it becomes relatively simple to exert sufficient pressure force on the conjunctiva.
• a first end of the substantially elongated supporting arm is provided with an indentation for receiving a portion of a cylindrical tube of a cannula.
• the tube can be guided while being removed from the eye. Guiding of the tube of the cannula can, for instance, prevent the opening provided in the eye by an incision from tearing during removal of the tube.
• An additional advantage can be that the press-on part during removal of the tube of the cannula can be relatively simply held at a constant distance from the tube and hence from the incision. Consequently, relatively simply, the conjunctiva can be pressed upon at the right spot, and since the distance to the incision can be kept the same, it can hence become simpler to apply the right pressure force.
• the invention further relates to an eye surgical set, comprising at least one cannula and an eye surgical instrument.
• Figure 1 shows a schematic view of a first embodiment of a surgical instrument according to the invention and a cross section of a portion of an eye
• Figure 2 shows a schematic perspective view of a part of a second embodiment of a surgical instrument according to the invention.
• Fig. 1 shows a schematic view of a first embodiment of a surgical instrument 1 according to the invention and a cross section of a portion of an eye 2.
• an incision 3 has been provided in the conjunctiva 7 and the sclera 21.
• the incision as is represented in Fig. 1, can be an oblique slit incision 3, which is also referred to as oblique step incision 3.
• oblique step incision 3 This is to say that the plane of the incision 3 is not perpendicular to the outer surface 2a of the eye 2, but is actually oblique. Accordingly, the oblique slit incision 3 is at an angle to the local outer surface 2a of the eye 2.
• the cannula 4 may be placed in the incision 3 .
• the cannula 4 here has a hollow tube 9 which provides a passage 23 to permit medicaments and/or tools at least partly to be introduced into the eye, for instance, into the posterior chamber and/or the vitreous body 22 of the eye.
• the surgical instrument 1 shown is suitable for at least partly pressing closed an incision 3 provided in an eye 2 during and/or after removal of a cannula 4 from the incision 3.
• the instrument 1 comprises a substantially elongated supporting arm 5 and a press-on part 6 connected with the supporting arm 5.
• the press-on part 6 is designed to enable a pressure force to be exerted on the conjunctiva 7 of the eye 2.
• the press-on part 6 extends sidewards away from the supporting arm 5.
• the press-on part 6 is substantially transverse to the supporting arm.
• the press-on part may be of substantially circular cylindrical design.
• an axis 12 of the press-on part extends from the supporting arm 5 in the direction 13 in which the press-on part 6 extends from the supporting arm 5.
• the press-on part 6 can comprise a press-on tip 6b having a spherical press-on surface 6c.
• the press-on surface 6c can simply maintain abutment with the outside 2a of the eye, hence without a turning of the instrument 1 resulting in the press-on surface 6c being incorrectly positioned.
• the press-on part 6, as is shown in Fig. 2 can have a substantially flat press-on surface 6c, or the press-on surface 6c may be, for example, concave, for instance to conform relatively well to the curvature of the outside 2 a of the eye 2.
• a first end 5a of the substantially elongated supporting arm 5 is provided with an indentation, not shown in Fig. 1, for receiving a portion of a cylindrical hollow tube 9 of the cannula 4.
• Fig. 2 shows a schematic perspective view of a part of a second embodiment of a surgical instrument 1 according to the invention.
• This second embodiment differs chiefly from the first embodiment shown in Fig. 1 in that the press-on part 6 is differently shaped.
• the indentation 8 is provided with a sharp edge 10.
• the sharp edge 10 can scrape tissue off a portion of a cylindrical tube 9 of the cannula 4.
• the cannula may thus be prevented from entraining tissue, such as tissue of the vitreous body of the eye, out of the eye too far.
• the indentation 8 is here bounded by a boundary surface 11 which forms a part of an imaginary circular cylinder.
• an axis 12 of the press-on part 6 and a central axis 14 of the circular cylinder are at an angle 15 with respect to each other, such that the axes 12, 14 mutually intersect on the side of the supporting arm 5 where the press-on part 6 is placed.
• the central axis 14 of the imaginary circular cylinder is preferably at such an angle 15 with the direction 16, in which the substantially elongated supporting arm 5 extends, that the central axis 14 of the circular cylinder intersects the axis 12 of the press-on part 6. In the Figures, this occurs at point of intersection 17.
• the angle 15 between the direction 16 of the supporting arm and the central axis 14 of the circular cylinder and/or an angle 18 between the two axes 12, 14 can be, for example, between 30° and 60°, for example, between 40° and 50°, for example, at about 45°.
• the guide surface 11 can hence be placed such that this surface conforms well to a side 9a, remote from the eye, of the tube 9 of the obliquely positioned cannula 4 to be removed. Consequently, the press- on part 6 is then placed on a side of the incision 3 where the press-on part 6 can press the - viewed in a press-on direction 24 - substantially superjacent wall 3a towards the opposite wall 3b.
• the press-on direction 24a can be, for example, substantially perpendicular to the local outer surface 2a of the eye 2.
• the press-on direction 24b can be, for example,
• press-on direction 24 may be in the range of these two examples 24a, 24b.
• the instrument 1 can be used not only during the removal of a cannula 4 from the eye 2.
• the eye surgical instrument 1 may alternatively or additionally be used, for instance, to press closed the incision 1 after removal of a cannula 4 and/or to massage the eye 2 locally.
• the press-on part 6, viewed in the longitudinal direction 16 of the supporting arm 5, is located remote from the first end 5a of the supporting arm 5.
• the distance from an extreme tip 5a' of the end 5a to an axis 12 of the press-on part 6 can be between about 0.5 and 30 mm, for example, about 0.5, 0.75, 1, 1.25, 1.5, 2, 2.5, 3, 4, 5, 7.5, 10, 15, 20, 25, or 30 mm.
• the eye surgical instrument 1 is designed such that the longitudinal direction 16 of the supporting arm 5 during normal use is substantially parallel to the local outer surface 2a of the eye 2.
• a second end 5b of the substantially elongated supporting arm 5 may be coupled to a handle 18.
• an axis 19 of the handle 18 is at an angle 20 with respect to the direction 16 in which the substantially elongated supporting arm 5 extends.
• the handle 18 may in reality be much greater than the eye 2.
• the eye surgical instrument 1 can be used during removal of the cannula 4.
• the cyhndrical boundary surface 11 can be placed against the side 9a, remote from the eye, of the tube 9 of the cannula, and can guide the cannula 4 while it is being withdrawn from the eye. Also, in this way, the press-on part 6 can be kept in the proper place. For when the instrument 1 is guided along the tube towards the eye, it can end up at the right spot. So then a start is made with pressing closed the incision 3 during removal of the cannula or substantially directly after removal of the cannula. As a result, pressure loss can be minimal and failure to locate the incision 3 can be obviated.
• the eye surgical instrument 1 and the cannula 4 can form a set 1, 4. Accordingly, the instrument 1 can be offered, for instance, together with one or a plurahty of cannulas 4, while the radius of the cylindrical tube 9 of the cannula 4 preferably corresponds substantially to the radius of the cylindrical boundary surface 11 of the indentation 8 of the eye surgical instrument 1.
• the supporting arm 5 and/or the press-on part 6 is/are preferably manufactured from stainless steel, so that an easily sterilizable product can be obtained.
• the invention is not limited to the exemplary embodiments described here. Many variants are possible.
• the supporting arm 5 and/or the press-on part 6 may be manufactured from other materials, for example, from titanium and/or plastic.

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)
• Surgical Instruments (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (2)

Cited By (1)

Citations (3)

• 2012
  • 2012-03-09 NL NL2008458A patent/NL2008458C2/nl not_active IP Right Cessation
• 2013
  • 2013-03-07 WO PCT/NL2013/050149 patent/WO2013133710A1/fr not_active Ceased

Patent Citations (3)

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