EP2023866A1 - Chirurgischer extraktor - Google Patents
Chirurgischer extraktorInfo
- Publication number
- EP2023866A1 EP2023866A1 EP07725144A EP07725144A EP2023866A1 EP 2023866 A1 EP2023866 A1 EP 2023866A1 EP 07725144 A EP07725144 A EP 07725144A EP 07725144 A EP07725144 A EP 07725144A EP 2023866 A1 EP2023866 A1 EP 2023866A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- legs
- surgical extractor
- surgical
- support plates
- extractor according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30159—Concave polygonal shapes
- A61F2002/30172—T-shaped
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30471—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4619—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof for extraction
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
- A61F2002/4628—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2002/4681—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor by applying mechanical shocks, e.g. by hammering
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0091—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0052—T-shaped
Definitions
- the invention relates to a surgical extractor for the surgical removal of disc prostheses, which have two support plates, each having a hinge part.
- intervertebral disc prostheses which have two ' sub-elements, each with a support plate.
- Each support plate has on its outwardly facing side a contact surface with which the support plate is supported on a vortex adjacent to the disc space.
- On the inside of each support plate is a hinge part, which is formed in one support plate by a dome-shaped socket and the other support plate by a corresponding dome-shaped joint head. When inserted, the socket and the condyle together form a ball joint, so that the two support plates can be tilted in all spatial directions relative to each other.
- the object of the invention is to specify a surgical extractor for the surgical removal of intervertebral disc prostheses of the type mentioned in the introduction.
- a surgical Extract- tor which has two fork-shaped interconnected legs, which are insertable into a space between the two Träg.erplatten a to be extracted disc prosthesis and each carry at least one locking element at its free end, which in a first position allows insertion into the space between the two support plates of the intervertebral disc prosthesis and in a second, locked position projects beyond the gap in vertical height.
- the two legs are connected to a common extraction means for transmitting a tensile force on the legs in the longitudinal direction thereof.
- the legs are inserted through the space between the support plates of a disc prosthesis and then locked.
- the intervertebral disc prosthesis can then be driven out of the intervertebral disc space with the extraction agent.
- the legs are detachably connected to the extractant, the legs can be separated on one - -
- the blocking elements can then be made to be wider in a first transverse direction than in a second transverse direction.
- the two legs can each be inserted in an orientation in which the locking element with its narrower transverse direction through the gap between the support plates passes through, then rotated by 90 ° in the locked position and connected to each other.
- the legs preferably have a substantially round profile over their insertable length, and the locking elements are in each case designed as rigid extensions formed in a T-shaped manner on the end of the legs.
- the blocking elements should expediently be shaped in such a way that in the locked position they can not transmit any force component which spreads apart the carrier plates, which makes it difficult to drive the intervertebral disc prosthesis out of the intervertebral disc space.
- the extraction means may advantageously comprise a shank with a stop and a return weight movable along the shank as far as the stop.
- the disc prosthesis can then be careful in small
- Steps are driven by the kickback weight by the operator jerky moves against the stop - -
- the legs have a different length. This makes it possible to extract the intervertebral disc prosthesis via a lateral access from the intervertebral disc space.
- Figure 1 is a side view of a disc prosthesis in the inserted state between two vertebrae
- Figure 2 is a plan view of an inventive
- Figure 3 is a side view of a single leg of the extractor of Figure 2;
- FIG. 4 shows the intervertebral disc prosthesis from FIG. 1 with an extractor inserted from the hidden side
- FIG. 5 is an exploded view of the extractor shown in Figures 2-4;
- FIG. 6 is a plan view, similar to FIG. 2, of an extractor according to another exemplary embodiment of the invention.
- FIG. 1 shows an intervertebral disc prosthesis 10 which is inserted in an intervertebral disc space between an upper vertebral body 1 and a lower vertebral body 2.
- the intervertebral disc prosthesis has an upper support plate 3 and a lower support plate 4.
- each support plate 3, 4 On the inside of each support plate 3, 4 is a projection with a hinge part, which is formed at the lower support plate by a dome-shaped socket 5 and the upper support plate 3 by a corresponding dome-shaped joint head ⁇ .
- Joint socket 5 and condyle 6 together form a ball joint, so that the two support plates 3, 4 of the intervertebral disc prosthesis 10 can be tilted in all spatial directions to each other.
- FIG. 2 An inventive extractor 20 is shown in Figure 2 above the lower support plate 4 of the disc prosthesis 10 schematically in a plan view and in Figure 5 in an exploded view.
- the extractor 20 has two identical legs 21, 21 ', each having at one end a rigidly molded, T-shaped extension 22, 22' and at its other end in each case a laterally offset fastening eye 23, 23 'wear.
- the leg 21 is shown from the side.
- the leg 21 and the T-shaped extension 22 have a round profile.
- a bore 28 in the attachment eye 23 for receiving a pin 27 is indicated.
- the T-shaped extension 22 is mounted orthogonal to the attachment eye 23, so that in the assembled state of the extractor 20 it is perpendicular to the plane defined by the legs 21, 21 '.
- the two legs 22, 22 ' are detachably connected to a common shaft 24, on which a movable non-return weight 25 is guided, that can be moved against a stop 26.
- a pin 27 of course, a screw, a bolt or a similar fastener can be selected.
- the two legs 22, 22 ' form a fork in the connected state, which engages around the ball joint of the intervertebral disc prosthesis 10 formed by the joint parts 5, 6. Due to the curved portions between the fastening eyes 23, 23 'and the legs 21, 21', the latter are arranged in a plane when they are connected to each other via the pin 27.
- the dismantling of the extractor 20 allows the insertion of the legs 21, 21 'into the space between the carrier In addition, all parts of the extractor 20 can be individually cleaned and sterilized.
- extractor 20 is surgical grade 316L stainless steel.
- other materials sufficiently inert and fracture resistant such as e.g. Titanium or titanium alloys are used.
- the two legs 21, 21 ' individually, preferably via a ventral or lateral access channel, inserted into the gap-like space between the two support plates 3, 4.
- the legs 21, 21 ' are rotated so that the T-shaped extension 22, 22' is in the cleaving direction.
- the legs 21, 21 ' rotated so far into the joint space of the intervertebral disc prosthesis 10, that the T-shaped projections 22, 22' protrude into the vertebral canal on the opposite side, the legs 21, 21 'rotated by 90 °, with the shaft 23 assembled and connected via the pin 27.
- the T-shaped projections 22, 22 ' are designed so that they are substantially flat at the end faces of abut both carrier plates 3, 4, so that no carrier components 3, 4 spread, orthogonal force component is transmitted.
- the end faces of the carrier plates 3, 4 may also be slightly bevelled to their outer sides. If the extensions 22, 22 'are then designed such that they each enclose an angle with the legs 21, 21' which is slightly smaller than 90 °, a force component is transferred when the intervertebral disc prosthesis 10 is driven off, which supports the carrier plates 3, 4 at the
- Vertebral channel facing side compressed and spreads at the opposite, ventral side accordingly. This results in a slightly wedge-shaped position of the support plates, so that the intervertebral disc prosthesis 10 can slide out of the intervertebral disc space more easily.
- any other type of extraction device capable of transmitting a tensile force in the longitudinal direction of the legs 21, 21 ' may be used.
- any other type of extraction device capable of transmitting a tensile force in the longitudinal direction of the legs 21, 21 'may be used.
- a lateral approach can be provided, via which the surgeon uses the intervertebral disc prosthesis 10 by means of a hammer _ _
- Mers can drive out.
- a screw mechanism can be provided which is supported on the adjacent vertebral bodies to push out the disc prosthesis 10 by screwing one or more extraction spindles against the vertebral bodies from the disc space.
- T-shaped projections 22, 22 ' with which the legs 21, 22' are locked, for example, can be provided barbs or rotatably mounted on the end of the legs locking members, which after insertion of the legs on a suitable Mechanism at the front end of the legs can be operated. Also, it is not necessary that the legs 21, 21 'are introduced over the entire width of the intervertebral disc prosthesis 10 into the vertebral canal.
- recesses can be provided in the carrier plates, in which suitable locking members can engage at the end of the legs of the extractor.
- FIG. 6 shows a plan view, which is based on FIG. 2, of an extractor, generally designated 20, according to another exemplary embodiment of the invention.
- the extractor 120 differs from the extractor 20 described above only in that the legs 121, 121 'have different lengths. Further, the outwardly facing short legs of the T-shaped extensions 122, 122 'have a semi-circular profile and the support plates 3, 4 at their dorsal end semicircular recesses 130, 130', which are complementary to the profile of the extensions 122, 122 'formed , - -
- the differently long legs 122, 122 'and the positive engagement of the projections 122, 122' in the recesses 130, 130 ' make it possible to extract the carrier plates 3, 4 via laterally acting forces from the intervertebral disc without the projections 122, 122 'slip on the support plates 3, 4.
- the semicircular shape further ensures that the extensions 122, 122 'do not protrude beyond the dorsal end of the support plates 3, 4 and thus injure the adjacent delicate tissue during the extraction process.
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006024809A DE102006024809A1 (de) | 2006-05-27 | 2006-05-27 | Chirurgischer Extraktor |
PCT/EP2007/004224 WO2007137688A1 (de) | 2006-05-27 | 2007-05-12 | Chirurgischer extraktor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2023866A1 true EP2023866A1 (de) | 2009-02-18 |
Family
ID=38572815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725144A Withdrawn EP2023866A1 (de) | 2006-05-27 | 2007-05-12 | Chirurgischer extraktor |
Country Status (6)
Country | Link |
---|---|
US (2) | US20090209968A1 (de) |
EP (1) | EP2023866A1 (de) |
CN (1) | CN101453962A (de) |
DE (1) | DE102006024809A1 (de) |
WO (1) | WO2007137688A1 (de) |
ZA (1) | ZA200808761B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130261626A1 (en) * | 2012-03-29 | 2013-10-03 | Jason M. Chavarria | Orthopaedic surgical instrument for removing an implanted humeral stem component and method of using the same |
US11607323B2 (en) | 2018-10-15 | 2023-03-21 | Howmedica Osteonics Corp. | Patellofemoral trial extractor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4215400B2 (ja) * | 1998-10-02 | 2009-01-28 | ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング | 脊椎円板空間伸延器 |
US7169182B2 (en) * | 2001-07-16 | 2007-01-30 | Spinecore, Inc. | Implanting an artificial intervertebral disc |
US20040059318A1 (en) * | 2002-09-20 | 2004-03-25 | Sdgi Holdings, Inc. | Instrument and method for surgical extraction |
US20040148028A1 (en) * | 2002-12-19 | 2004-07-29 | Ferree Bret A. | Artificial disc replacement (ADR) extraction methods and apparatus |
FR2861582B1 (fr) * | 2003-10-29 | 2006-02-10 | Eurosurgical | Cage intersomatique pour fusion lombaire par abord transforaminal et son dispositif porte cage |
US20060089656A1 (en) * | 2004-10-22 | 2006-04-27 | Sdgi Holdings, Inc. | Revision instruments |
DE202005016360U1 (de) * | 2005-10-14 | 2005-12-29 | Aesculap Ag & Co. Kg | Chirurgisches Instrument zum Entfernen eines Zwischenwirbelimplantats |
DE102005050031A1 (de) * | 2005-10-14 | 2007-04-19 | Aesculap Ag & Co. Kg | Chirurgisches Instrument zum Entfernen eines Zwischenwirbelimplantats |
-
2006
- 2006-05-27 DE DE102006024809A patent/DE102006024809A1/de not_active Withdrawn
-
2007
- 2007-05-12 US US12/300,018 patent/US20090209968A1/en not_active Abandoned
- 2007-05-12 EP EP07725144A patent/EP2023866A1/de not_active Withdrawn
- 2007-05-12 WO PCT/EP2007/004224 patent/WO2007137688A1/de active Application Filing
- 2007-05-12 CN CNA2007800193958A patent/CN101453962A/zh active Pending
-
2008
- 2008-10-14 ZA ZA200808761A patent/ZA200808761B/xx unknown
-
2012
- 2012-01-13 US US13/349,818 patent/US20120116519A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007137688A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006024809A1 (de) | 2007-11-29 |
US20090209968A1 (en) | 2009-08-20 |
CN101453962A (zh) | 2009-06-10 |
US20120116519A1 (en) | 2012-05-10 |
ZA200808761B (en) | 2009-11-25 |
WO2007137688A1 (de) | 2007-12-06 |
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Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20130522 |