CA2534175A1 - Surgical nail - Google Patents

Surgical nail Download PDF

Info

Publication number
CA2534175A1
CA2534175A1 CA002534175A CA2534175A CA2534175A1 CA 2534175 A1 CA2534175 A1 CA 2534175A1 CA 002534175 A CA002534175 A CA 002534175A CA 2534175 A CA2534175 A CA 2534175A CA 2534175 A1 CA2534175 A1 CA 2534175A1
Authority
CA
Canada
Prior art keywords
nail
borehole
component
transverse
cross
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.)
Granted
Application number
CA002534175A
Other languages
French (fr)
Other versions
CA2534175C (en
Inventor
Andre Schlienger
Dankward Hontzsch
Markus Buettler
Peter Senn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes USA LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2534175A1 publication Critical patent/CA2534175A1/en
Application granted granted Critical
Publication of CA2534175C publication Critical patent/CA2534175C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
    • A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00004—(bio)absorbable, (bio)resorbable, resorptive

Abstract

The surgical nail (1), in the form of an intramedullary nail, comprises a central axis (2), a longitudinal bore (3) which extends coaxially in relatio n to the center axis (2) and which has a diameter D, an outer covering (4) having an inner surface (6) and a transversal bore (5) which extends transversally in relation to the center axis (2) having a cross-sectional profile F and a bore axis (8). A construction element (7) which narrows the cross-sectional profile F is provided in the longitudinal bore (3) in the region of the transversal bore (5). As a result, it is possible to eliminate in a risk-free manner the backlash which normally exists between the medulla r pivot and the locking screws introduced therein, and improved retention forc e and an improved guiding effect can be obtained between the locking screw and the intramedullary nail.

Claims (15)

1. Surgical nail (1), especially an intramedullary nail, with a central axis (2), a longitudinal borehole (3) extending coaxially with the central axis (2) with the diameter D, a casing (4) with the inner surface (6) and a transverse borehole (5) extending transversely to the central axis (2), which is suitable for accommodating a locking screw (10), the transverse borehole having a cross-sectional profile F
and a borehole axis (8), characterized in that A) the longitudinal borehole (3) is continuous and B) a component (7), narrowing the cross-sectional profile F but still permitting passage of a locking screw (10), is provided in the longitudinal borehole (3) in the region of the transverse borehole (5):
2. The nail (1) of claim 1, characterized in that the component (7) is fastened to the inner surface (6) of the casing (4).
3. The nail (1) of claims 1 or 2, characterized in that the component (7) is a stud, a piece of wire, a piece of cable or a profiled piece and is aligned essentially parallel to the longitudinal axis (2).
4. The nail (1) of one of the claims 1 to 3, characterized in that the component (7) consists of the same material as the nail (1) and preferably is metallic.
5. The nail (1) of one of the claims 1 to 3, characterized in that the component (7) consists of a biocompatible plastic, preferably of a polyethylene or a high molecular weight polyethylene (HMWPE).
6. The nail (1) of claim 5, characterized in that the plastic is a bioabsorbable polymer or copolymer, preferably a polylactide.
7. The nail (1) of one of the claims 1 to 6, characterized in that the cross-sectional profile F has a maximum length a in the direction of the central axis (2) and, perpendicularly thereto, a maximum width b with a > b.
8. The nail (1) of one of the claims 1 to 7, characterizing that the transverse borehole (5) is a circular borehole, the cross-sectional profile F
having the maximum lengths a = b.
9. The nail (1) of one of the claims 1 to 8, characterized in that it comprises a locking screw (10) with an external thread (11), which can be introduced into the transverse borehole (5), or a locking bolt (12) with a smooth shaft (13), the external thread (11) or the shaft (13) having a diameter "d" satisfying the condition a > d < b.
10. The nail (1) of claim 9 characterized in that the diameter "d"
preferably is at least 5% smaller than the smaller of the two dimensions a, b.
11. The nail (1) of one of the claims 1 to 10, characterized in that it has two penetrating, transverse boreholes (5) and the component (7) is positioned preferably in the corner region of the transverse boreholes (5).
12. The nail (1) of one of the claims 1 to 11, characterized in that the component (7) is constructed as a separate element, which can be introduced into the longitudinal borehole (3) during the operation.
13. The nail (1) of claim 12, characterized in that the inner surface (6) of the casing (4) has a groove (9), which extends parallel to the central axis (2) and into which the component (7) can be introduced.
14. The nail (1) of claim 13, characterized in that the groove (9) has a partially circular cross section, preferably with a central angle, which is larger than 180°.
15. The nail (1) of one of the claims 8 to 14, characterized in that the component (7) has a thickness of P > 0.01 D and preferably of P > 0.05 D
protruding radially into the longitudinal borehole.
CA2534175A 2003-07-30 2003-07-30 Surgical nail Expired - Fee Related CA2534175C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000519 WO2005009263A1 (en) 2003-07-30 2003-07-30 Surgical nail

Publications (2)

Publication Number Publication Date
CA2534175A1 true CA2534175A1 (en) 2005-02-03
CA2534175C CA2534175C (en) 2012-01-10

Family

ID=34085300

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2534175A Expired - Fee Related CA2534175C (en) 2003-07-30 2003-07-30 Surgical nail

Country Status (13)

Country Link
US (1) US9237909B2 (en)
EP (1) EP1648321B1 (en)
JP (1) JP4436320B2 (en)
KR (1) KR101004528B1 (en)
CN (1) CN100387202C (en)
AT (1) ATE418923T1 (en)
AU (1) AU2003304368B2 (en)
BR (1) BR0318425B1 (en)
CA (1) CA2534175C (en)
DE (1) DE50311031D1 (en)
ES (1) ES2319179T3 (en)
NZ (1) NZ544958A (en)
WO (1) WO2005009263A1 (en)

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WO2004110290A1 (en) * 2003-06-12 2004-12-23 Synthes Ag Chur Surgical nail
ATE418924T1 (en) * 2003-08-29 2009-01-15 Synthes Gmbh INTEGRAL NAIL
KR101136221B1 (en) * 2003-10-21 2012-04-17 신세스 게엠바하 Intramedullary pin for the tibia
DE502004009250D1 (en) * 2004-06-22 2009-05-07 Synthes Gmbh INTRAMEDULLÄRER BRAND NAIL
DE502004008054D1 (en) * 2004-06-24 2008-10-23 Synthes Gmbh MARK NAGEL
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US20080287949A1 (en) * 2007-05-15 2008-11-20 Zimmer, Inc. Method and apparatus for securing a bone screw to an intramedullary nail
AU2008256740A1 (en) 2007-05-25 2008-12-04 Zimmer, Gmbh Reinforced intramedullary nail
US8668695B2 (en) 2008-10-15 2014-03-11 Zimmer Gmbh Intramedullary nail
US10039582B2 (en) * 2011-12-20 2018-08-07 DePuy Synthes Products, Inc. Self centering feature for an intramedullary nail
IN2014MU02601A (en) 2014-08-12 2015-10-23 Dr Nitesh Kumar TANDIYA
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US11617604B2 (en) 2020-04-15 2023-04-04 DePuy Synthes Products, Inc. Intramedullary nail assembly

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Also Published As

Publication number Publication date
CA2534175C (en) 2012-01-10
ES2319179T3 (en) 2009-05-05
DE50311031D1 (en) 2009-02-12
KR20060066075A (en) 2006-06-15
WO2005009263A1 (en) 2005-02-03
NZ544958A (en) 2009-01-31
CN100387202C (en) 2008-05-14
CN1802128A (en) 2006-07-12
AU2003304368B2 (en) 2009-01-08
JP2007506446A (en) 2007-03-22
US20060189988A1 (en) 2006-08-24
US9237909B2 (en) 2016-01-19
BR0318425A (en) 2006-08-01
AU2003304368A1 (en) 2005-02-14
EP1648321A1 (en) 2006-04-26
JP4436320B2 (en) 2010-03-24
KR101004528B1 (en) 2010-12-31
BR0318425B1 (en) 2013-02-05
ATE418923T1 (en) 2009-01-15
EP1648321B1 (en) 2008-12-31

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