WO2007057928A1 - Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur - Google Patents

Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur Download PDF

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Publication number
WO2007057928A1
WO2007057928A1 PCT/IT2005/000666 IT2005000666W WO2007057928A1 WO 2007057928 A1 WO2007057928 A1 WO 2007057928A1 IT 2005000666 W IT2005000666 W IT 2005000666W WO 2007057928 A1 WO2007057928 A1 WO 2007057928A1
Authority
WO
WIPO (PCT)
Prior art keywords
osseous
scraper
cutting edge
handgrip
rear end
Prior art date
Application number
PCT/IT2005/000666
Other languages
English (en)
Inventor
Alberto Giordano
Original Assignee
Physioline S.R.L.
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 Physioline S.R.L. filed Critical Physioline S.R.L.
Priority to PCT/IT2005/000666 priority Critical patent/WO2007057928A1/fr
Publication of WO2007057928A1 publication Critical patent/WO2007057928A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1635—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for grafts, harvesting or transplants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477—Coupling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00969—Surgical instruments, devices or methods, e.g. tourniquets used for transplantation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320004—Surgical cutting instruments abrasive
    • A61B2017/320008—Scrapers

Definitions

  • the present invention is concerned with the surgical techniques for bone transplantations and it in
  • the invention relates to a scraper for drawing small particles of healthy bone in the form of shreds or flakes designed to be transplanted onto a tissue to be reconstructed above all in the field of dental and maxillary-facial surgery.
  • Drawing or removal is preferably carried out (and generally compulsorily, due to rejection problems) from a bone from the patient himself/herself, and the removed material is used either to induce a new bone growth in the lack of said bone due to natural or provoked causes, or to regenerate osseous defects on the occasion of a reconstruction, or also to increase- weakened bone sections.
  • the material must be removed without any damage being caused to the bone itself, and to the fleshy parts surrounding the operation area. It is therefore of the greatest importance that the only cortical part of the bone be concerned with said removal, while avoiding the medullar and - spongy part of the bone being damaged.- It is also necessary to collect the removed bone flakes and shreds and preserve them until grafting of same directly in contact with the osseous defect • to be regenerated.
  • manufacture of the single body in two parts is not able to ensure an appropriate sturdiness of the device ' itself under all possible situations.
  • risk of impacts and/or very strong stresses for example which may bring about separation of the two parts slidably engaged with each other and, as a result, accidental escape of the removed osseous material.
  • the present invention aims at conceiving an osseous scraper in whichi replacement of same at the end of each osseous removal is not required.
  • Another aim of the invention consists in making an osseous scraper capable of ensuring a sufficient structural sturdiness under any operating condition.
  • a still further aim of the invention is to make available an osseous scraper that can be easily handled and can be a valid alternative solution to the ⁇ instruments presently on the market.
  • - Fig. 1 is a side view of an osseous scraper in accordance with a preferred embodiment of the invention
  • FIG. 2 is a section view of the scraper seen in Fig.
  • FIG. 3 is a plan view of the scraper seen .in Fig.. 1;
  • FIG. 4 is an exploded perspective view of the scraper in Fig. 1; . .
  • - Fig. 5 is a front . view of one component of the scraper in Fig. 1, according to a 'preferred embodiment; - Fig. ⁇ is a section view of another component of the scraper in Fig. 1, according to a preferred embodiment; - Fig. 6a is a section view of the component shown in Fig. 6, in a different embodiment.
  • an osseous scraper in accordance with the invention is identified by reference numeral 1 in Fig. 1."
  • Scraper 1 comprises a hollow body 2 having a front end 10 2a to which a scraping element 3 is fastened, which scraping element 3 is adapted to draw or remove osseous material from a donor bone by scraping, and a rear end 2b associated with a handgrip 4.
  • the body 2 as shown in a section view in Fig. 2 has a curved shape.
  • the body 2 has a concave portion 2c and a convex portion 2d.
  • the concave portion 2c preferably has a substantially flat transverse extension, to generate a rest and grip surface for one of the user's fingers, generally the forefinger.
  • the body 2 internally has a collection housing 5 for storage of the removed osseous material.
  • the collection housing 5 for storage of the removed osseous material.
  • the 30 collection housing 5 is formed with a through cavity.
  • the 30 collection housing 5 is accessible from a front opening
  • the collection housing 5 preferably has' an extension following the curved shape -of the body 2 itself.
  • the collection housing has a substantially semicircular section and is delimited, at the concave ' portion 2c, by a substantially flat surface.
  • the collection housing 5 is exclusively accessible through the front opening 6.
  • body 2 enables easy access to regions for bone removal that are not of easy access, such as portions of an upper jaw hemiarch.
  • the body 2 is also provided for the body 2 to be made following a single straight direction, which is clearly advantageous in terms of construction but entails loss of the above mentioned advantages resulting from' the curved shape.
  • the body 2 advantageously has • a decreasing transverse direction on moving from the rear end 2b to the front end 2a, so as to enable the front end 2a and therefore the scraping element 3 to carry out removal of the osseous material with ease also close to narrow spaces ⁇ such ' as the interdental spaces of the buccal cavity.
  • the collection housing 5 in the form of a through cavity makes the latter accessible both at the front end 2a and at the rear end 2b of the body 2.
  • This feature advantageously enables removal of the osseous material stored within the collection housing 5 through the rear end 2b that, as previously described, has bigger sizes than the front end 2a and therefore allows emptying of the collection housing 5 with ease.
  • the body 2 and handgrip 4 are advantageously coupled in a . removable manner. In this way the handgrip 4 can be separated from the body 2, if necessary, thus achieving a dual purpose, to enable access to the rear end 2b of the body 2 for emptying of the ' collection housing 5 and also to ⁇ enable replacement of the body 2 with a new sterilised body without replacement of the handgrip 4 being also required.
  • connection between the body 2 and handgrip 4 is obtained in a first embodiment by a screw threaded connection 8, as shown • in Fig. 4.
  • the threaded connection 8 is preferably formed with a first thread 8a to be made on an .outer portion of the rear end 2b of body 2, and. ' a second thread 8b to be made at an inner portion of a respective end of the handgrip 4.
  • the outer thread can be formed on the handgrip 4 and a corresponding inner thread can be formed on body 2.
  • the last mentioned solution although entailing a more complicated construction due to inversion of the working tools' shapes, has the advantage of facilitating cleaning and sterilisation on the handgrip 4, because it is much easier to clean an outer thread than an inner thread.
  • the threaded connection 8 between trhe body 2 and handgrip 4 is obtained by a threaded ring nut engaging into respective preferably external threads of the body 2 and the handgrip 4. This brings about the advantage of making dismantling of the handgrip 4 easier,- but entails a slightly more complicated construction due to the presence of the ring nut.
  • connection between the body 2 and the handgrip 4 is achieved by interference fit (a connection obtained by force or pressure) or by tight fitting.
  • the last- mentioned type of connection comprises' spring elements such as tongues, or snap-fitting mechanisms.
  • the collection housing 5 is not delimited by any closing element at the rear end 2b of the body 2 and therefore the osseous material contained therein is free to come out of the collection housing 5.
  • the body 2 is provided with a shutter 9 to be stably inserted in a suitable slit 10 formed in the body 2 itself.
  • the slit 10 is placed close to the rear end 2b of body 2.
  • location of -slit 10 is almost close to the first thread 8a, i.e. at the rearmost possible position, so as to give the collection housing 5 the largest volume for holding the osseous material.
  • the slit 10 is formed on the side of the concave portion 2c for reasons ' to be clarified in the following.
  • shutter 9 comprises a central portion 9a having an outline of a shape conforming ⁇ to that of a corresponding portion of the collection housing 5 with which it engages to generate a sufficient .sealing action to prevent the . osseous material or possible associated fluids .from escaping therethrough.
  • ⁇ the central portion 9a has a flat shape the outline of which is delimited by a substantially semicircular length 9b, and is closed by a flat element 9c corresponding to the flat transverse shape of the concave portion 2c of body 2.
  • the flat element 9c ensures a steady ' arrangement of the shutter 9 within the slit 10, due to the fact ' that the
  • the fastening means 9d consists of two hooks
  • shutter 9 dismantling of. the handgrip 3 from the body 2 is therefore possible, as well as transport of said body to a suitable seat for treatment and/or use of the osseous material contained therein.
  • the osseous material as previously said, is removed from a donor bode .by the scraping action carried out by a scraping element 3.
  • Said scraping element is secured to the front end 2a of body 2 and identifies, in co- operation with said body 2, the front opening 6.
  • the scraping element 3 has an axially symmetric shape, substantially extending as a solid of revolution around an axis Z.
  • the scraping element 3 is therefore 'steadily mounted on body 2 at the front end 2a, in cantilevered fashion for example, as shown in Fig. 6.
  • the scraping element 3 is .fastened to the body 2 in an irremovable manner taking into account the fact that both of them are of the throw-away type and therefore at the end of their use "they are to be replaced with a new body 2 and a new scraping element 3.
  • mounting of the scraping element 3 preferably takes place in such a manner that axis Z lies parallel to the first direction X, along which the front end 2a extends.
  • the scraping element 3 is generally formed with a blade which however works under conditions that are different from normal cutting conditions of any type of blade.
  • the scraping element 3 has a cutting edge 13 of curved shape, in particular in the form of an arc of a circle, and a root 14 placed in a position opposite to the cutting edge 13 relative to axis Z.
  • the cutting edge 13 lies in a surface S generally perpendicular to said axis Z and therefore also perpendicular to the first direction X in case of parallelism between the axis Z and the first direction X.
  • root 14 is the portion of the scraping element 3 that is generally used for fastening to the front end 2a of body 2 in cantilevered fashion.
  • the osseous scraper 1 is moved on in a forward direction denoted by reference A, which direction is preferably parallel to the first direction
  • the surface S of the scraping element is provided to be inclined so that, on moving from the root 14 to the cutting edge 13, the cutting edge 13 extends away from the front end 2a.
  • said surface S forms an acute angle B with respect to the advancing direction A, as clearly shown in Fig. 6a.
  • Said inclination of surface S can be obtained through manufacture of a different scraping element 3 in which the surface S of the cutting edge 13 and the axis Z form an angle with each other that is different from 90°, or by using a scraping element 3 identical with the original one but which is fastened to the first end 2a of body 2 in an inclined position, so as to obtain the desired effect.
  • Said substantially circular shape of the cutting edge 13 achieves the advantage of generating a gradual removal of the osseous material from the donor bone, through passages in succession.
  • the shape of the cutting edge 13 is preferably curved.
  • an osseous scraper 1 comprising the body 2 to which the scraping element 3 and handgrip 4 are mounte.d is grasped by a user and set on the work region, close to the donor bone.
  • shutter 9 is required to be -, firmly fixed at the inside of its seat. Grasping by the user takes place with one hand at the handgrip 4 and, in accordance with the previous description, the hand forefinger is stretched to come into contact with the concave portion 2c of body 2, in order to ensure a steady and safe gripping, and also to reach accuracy during the scraping operation.
  • the body 2 has at least one knurled portion 15 at least at said concave portion 2c. In -an embodiment not shown, said knurling is also extended laterally of the concave portion 2c, in particular on the side portions of body 2, which is useful above all when the body 2 is grasped laterally with two or more fingers.
  • the scraping element 3 is brought into contact with the bone portion to be scraped and, by a single stroke or several passages of the scraping element 3, the necessary bone amount is removed. It is apparent -that, due to the great sensitivity given to scraper 1 as a result of its ergonomic gripping features, a good manual ability and a mere pressure adjustment during each passage are sufficient for easily regulating the amount of osseous material to be drawn.
  • the handgrip 4 When removal has been completed, by a simple movement the handgrip 4 can be released from the body 2 and said body can be transferred to a suitable place where shutter 9 is removed and the osseous material is subsequently drawn out of the collection housing 5.
  • the handgrip 4 that advantageously can be reused for a new operation on a new donor, is then guided to a process for sterilisation, a heat sterilisation for example, and cleaning.
  • the handgrip must be made of a material resistant to heat sterilisation actions and also easily workable. Therefore, a preferred material for the handgrip is a heat-resistant plastic material.
  • the scraping element 3 is preferably- made of a biocompatible metal, since it must have important cutting properties and offer the minimum risk of allergy by the patients with whom it has to come into contact .
  • the body 2 and shutter 9 are preferably made of common plastic material since they are not subjected to particular technical specifications in terms of strength or chemical composition.
  • the invention " achieves important advantages.
  • the removability of the connection between the body and handgrip enables an important saving of material, because when bone removal has been completed the handgrip can be reused for one or more new drawing cycles, after cleaning and sterilisation and only the body inclusive of the scraping element and possibly the shutter is of the throw-away type.
  • the body of one piece construction makes the scraper sturdy and stable, above all in relation to the low and practically null risks of accidental escape of the drawn osseous material stored inside the
  • a further advantage is represented by the particular curved shape, also associable with the decreasing transverse size, because a scraper thus shaped is able to reach hardly accessible regions for bone removal.
  • a scraper thus shaped is able to reach hardly accessible regions for bone removal.
  • Another important advantage results from the presence of a through cavity also accessible from the rear end of the body associated with the handgrip, because the rear opening can be formed with bigger sizes than • the front opening.
  • the removable connection between the body and the handgrip can be merely obtained by a screw thread externally formed on the handgrip and a corresponding screw thread formed at the inside of the rear end of the body; by this solution the handgrip can be cleaned and sterilised more easily, because the external thread present on the handgrip is accessible with more ease for cleaning operations than in the case of an internal thread.

Abstract

L’invention a pour objet un grattoir à os (1) comprenant un corps (2) définissant à l’intérieur un logement de prélèvement (5) pour écailles et/ou lambeaux osseux et un élément grattoir (3) fixé à une extrémité antérieure (2a) du corps (2), ainsi qu’une poignée (4) associée à une extrémité postérieure (2b) du corps (2), le corps et la poignée (4) étant mutuellement reliés l’un à l’autre par une attache amovible (8).
PCT/IT2005/000666 2005-11-16 2005-11-16 Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur WO2007057928A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2005/000666 WO2007057928A1 (fr) 2005-11-16 2005-11-16 Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2005/000666 WO2007057928A1 (fr) 2005-11-16 2005-11-16 Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur

Publications (1)

Publication Number Publication Date
WO2007057928A1 true WO2007057928A1 (fr) 2007-05-24

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PCT/IT2005/000666 WO2007057928A1 (fr) 2005-11-16 2005-11-16 Grattoir a os pour le prelevement d’ecailles et/ou de lambeaux osseux sur l’os d’un donneur

Country Status (1)

Country Link
WO (1) WO2007057928A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009108318A2 (fr) 2008-02-27 2009-09-03 Ilion Medical Llc Instruments de réalisation de procédures articulaires orthopédiques peu invasives
WO2013165616A1 (fr) * 2012-04-30 2013-11-07 The John Hopkins University Prélèvement de tissu osseux
US8734456B2 (en) 2003-03-10 2014-05-27 Ilion Medical Llc Sacroiliac joint immobilization
US20150080896A1 (en) 2013-07-19 2015-03-19 Ouroboros Medical, Inc. Anti-clogging device for a vacuum-assisted, tissue removal system
US10448967B2 (en) 2011-12-03 2019-10-22 DePuy Synthes Products, Inc. Discectomy kits with an obturator, guard cannula
US11801060B2 (en) 2015-05-07 2023-10-31 Avitus Orthopaedics, Inc. Systems and methods for bone and tissue harvesting

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US5556399A (en) * 1995-02-14 1996-09-17 Huebner; Randall J. Bone-harvesting drill apparatus and method for its use
DE19947325A1 (de) * 1999-10-01 2001-04-05 Kaltenbach & Voigt Durch eine Schraubverbindung zu verbindende Teile, insbesondere eines medizinischen Instrumentes
WO2002076307A1 (fr) * 2001-03-26 2002-10-03 C.G.M. S.P.A. Dispositif permettant de retirer des plaques ou des copeaux d'un os de donneur par raclage
WO2003030766A1 (fr) * 2001-10-11 2003-04-17 Dentium Co.,Ltd. Outil permettant de recueillir de la matiere osseuse
US6575977B1 (en) * 1989-04-24 2003-06-10 Gary Karlin Michelson Surgical rongeur
EP1350474A1 (fr) * 2002-03-19 2003-10-08 Peri-Dent Limited Racleur
US20040059338A1 (en) * 2002-09-23 2004-03-25 Maxilon Laboratories, Inc. Apparatus and method for harvesting bone

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6575977B1 (en) * 1989-04-24 2003-06-10 Gary Karlin Michelson Surgical rongeur
US5556399A (en) * 1995-02-14 1996-09-17 Huebner; Randall J. Bone-harvesting drill apparatus and method for its use
DE19947325A1 (de) * 1999-10-01 2001-04-05 Kaltenbach & Voigt Durch eine Schraubverbindung zu verbindende Teile, insbesondere eines medizinischen Instrumentes
WO2002076307A1 (fr) * 2001-03-26 2002-10-03 C.G.M. S.P.A. Dispositif permettant de retirer des plaques ou des copeaux d'un os de donneur par raclage
WO2003030766A1 (fr) * 2001-10-11 2003-04-17 Dentium Co.,Ltd. Outil permettant de recueillir de la matiere osseuse
EP1350474A1 (fr) * 2002-03-19 2003-10-08 Peri-Dent Limited Racleur
US20040059338A1 (en) * 2002-09-23 2004-03-25 Maxilon Laboratories, Inc. Apparatus and method for harvesting bone

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8734456B2 (en) 2003-03-10 2014-05-27 Ilion Medical Llc Sacroiliac joint immobilization
US10149764B2 (en) 2003-03-10 2018-12-11 Ilion Medical, Inc. Sacroiliac joint immobilization
US9808346B2 (en) 2003-03-10 2017-11-07 Ilion Medical, Inc. Sacroiliac joint immobilization
US9314232B2 (en) 2008-02-27 2016-04-19 Ilion Medical, Inc Tools for performing less invasive orthopedic joint procedures
US8740912B2 (en) 2008-02-27 2014-06-03 Ilion Medical Llc Tools for performing less invasive orthopedic joint procedures
WO2009108318A2 (fr) 2008-02-27 2009-09-03 Ilion Medical Llc Instruments de réalisation de procédures articulaires orthopédiques peu invasives
EP2262433A4 (fr) * 2008-02-27 2012-12-19 Ilion Medical Llc Instruments de réalisation de procédures articulaires orthopédiques peu invasives
EP2262433A2 (fr) * 2008-02-27 2010-12-22 Ilion Medical LLC Instruments de réalisation de procédures articulaires orthopédiques peu invasives
US10682150B2 (en) 2008-02-27 2020-06-16 llion Medical, Inc. Tools for performing less invasive orthopedic joint procedures
US10448967B2 (en) 2011-12-03 2019-10-22 DePuy Synthes Products, Inc. Discectomy kits with an obturator, guard cannula
WO2013165616A1 (fr) * 2012-04-30 2013-11-07 The John Hopkins University Prélèvement de tissu osseux
JP2015516230A (ja) * 2012-04-30 2015-06-11 ザ・ジョンズ・ホプキンス・ユニバーシティー 骨採取デバイス及び骨採取方法
US9833248B2 (en) 2012-04-30 2017-12-05 The John Hopkins University Bone harvesting
US20150080896A1 (en) 2013-07-19 2015-03-19 Ouroboros Medical, Inc. Anti-clogging device for a vacuum-assisted, tissue removal system
US10342563B2 (en) 2013-07-19 2019-07-09 DePuy Synthes Products, Inc. Anti-clogging device for a vacuum-assisted, tissue removal system
US11801060B2 (en) 2015-05-07 2023-10-31 Avitus Orthopaedics, Inc. Systems and methods for bone and tissue harvesting

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