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Publication numberUS2136471 A
Publication typeGrant
Publication dateNov 15, 1938
Filing dateJun 30, 1937
Priority dateJun 30, 1937
Publication numberUS 2136471 A, US 2136471A, US-A-2136471, US2136471 A, US2136471A
InventorsSchneider Rudolph H
Original AssigneeSchneider Rudolph H
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bone pin
US 2136471 A
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Description  (OCR text may contain errors)

Nov, 15, W R. H. SCHNEIDER 2,136,471

' BONE PIN Filed June 50, 1937 INVENTOR ATTORNEY Patented Nov. 15, 1938 UNITED STATES PATENT OFFICE 4 Claims.

My invention relates to fracture pins, and more particularly to such fracture pins as are used in the healing of the fractures of the bones of lower animals.

An object of my invention is to provide a fracture pin which by virtue of its structural design can hold in rigid alignment a fractured bone, Whether transversely or obliquely broken, While the healing or mending activities are in process.

Another object of my invention is to provide a fracture or bone pin that can be easily inserted into the medullary cavity of a fractured bone and is slowly absorbed by the organism during the period of time it is restraining the fractured bone in its normal position.

A further object of my invention is to provide an absorbable fracture pin that not only facili tates the mending process of the fractured bone of an animal, but is also adapted to restrain in proper alignment the broken bone of a human being.

Other purposes and further advantages will be more clearly disclosed in a description of the accompanying drawing, in which;

Fig. 1 is a front elevation of the fracture pin.

Fig. 2 is an end view of the fracture pin.

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 1.

Fig. 4 isa transverse sectional view taken on line 44 of Fig. 1.

Referring specifically to the drawing, in which like reference numerals indicate like parts, I is a slender, quasi-cylindrical body fabricated of bone or any other suitable absorbable material. The termini of I are drawn or shaped into the pointed ends 2 and 2'. Running longitudinally along the outer surface of I are fins 3, which can, within the limits of reasonableness and practicality, 'be of any number. The fins 3 traverse the entire length of the body I and terminate sharply in the ends 2 and 2'. Although the fins 3 can be separately mounted upon the body I, yet it is preferable as a result of practice to have them fabricated integrally with the aforesaid body I. In order that structural weaknesses inherent in any other type of design may be avoided, I have discovered that strength and rigidity can be had if the said fins 3 are joined either separately or integrally to the body I along a rounded or curved plan of structure as indicated at 4 in Figs. 2, 3 and 4.

Mounted integrally on the longitudinal fins 3 are the projections 5, which extending above the said fins 3 prevent slippage of the fracture pin in the medullary cavity of the bone undergoing repair. The projections 5 may be positioned any where along the fins 3 depending upon the nature of the fracture, since their primary function is to eliminate a possible shifting of the fracture pin in the marrow cavity of a bone.

The method of using the fracture pin is quite obvious. The pin is partly inserted into one of the sections'of the fractured bone. The pointed end 2 can be pushed easily into the marrow canal. The other pointed end 2' is then inserted into the marrow cavity of the other section of the fractured bone. The pin thus inserted holds the parts of the fractured bone in rigid alignment. The spaces intermediate among the fins allow for the development of bone marrow and the formation of new bone cells. The projections 5 afford an opportunity to the bone surgeon to anchor the pin securely and prevent its slipping beyond the point of fracture. In the course of time not only are the fractured ends of the bone reknitted in their normal position and without any displacement, but the material of the pin, whether it be bone or any other adsorbable material is slowly absorbed or systemically acted upon by the fluids of the organism. Although the drawing illustrates a fracture pin which is best adapted to aligning the portions of a transverse fracture, yet the projections 5 can be fabricated at different positions along the fins 4 in order that the parts of an oblique fracture can be rigidly constrained to their normal position.

The present preferred embodiments of my invention are illustrative only and may be modified in detail without departing from its spirit and are not to be construed as restrictive of the scope of the appended claims.

Having thus described by invention, what I claim as new and desire to secure by Letters Patent is:

1. A fracture pin fabricated of non-living bone and comprising a shaft, said shaft terminating in pointed ends; longitudinal fins or ridges running along said shaft; and projections mounted on said fins or ridges.

2. A fracture pin of non-living, absorbable material comprising a shaft, said shaft terminating in pointed ends; longitudinal fins or ridges running along said shaft; and projections mounted on said fins or ridges.

3. A fracture pin of non-living, absorbable material comprising a shaft, said shaft terminating in pointed ends; and longitudinal ridges running along said shaft.

4. A fracture pin of non-living, absorbable material comprising a shaft, said shaft terminating in pointed ends; longitudinal fins or ridges running along said shaft, said fins or ridges attached by rounded joints to said shaft; and projections mounted on said fins.

RUDOLPH H. SCHNEIDER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2518019 *Nov 29, 1946Aug 8, 1950Timothy Kane JohnIntramedullary splint
US2785673 *May 6, 1952Mar 19, 1957Anderson RogerFemoral prosthesis
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US4338926 *Nov 21, 1980Jul 13, 1982Howmedica, Inc.Bone fracture prosthesis with controlled stiffness
US4516569 *May 5, 1983May 14, 1985National Research Development CorporationInternal orthopedic fracture fixation device for a small bone
US4697585 *Jan 11, 1985Oct 6, 1987Williams Michael OAppliance for fixing fractures of the femur
US4875474 *Jan 29, 1988Oct 24, 1989Biomet, Inc.Variable wall thickness interlocking intramedullary nail
US4976258 *May 5, 1988Dec 11, 1990Howmedica International, Inc.Locking nail
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US5354305 *Dec 17, 1992Oct 11, 1994United States Surgical CorporationNerve repair device
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US6296645Apr 9, 1999Oct 2, 2001Depuy Orthopaedics, Inc.Intramedullary nail with non-metal spacers
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US6709436May 22, 2000Mar 23, 2004Depuy Orthopaedics, Inc.Non-metal spacers for intramedullary nail
US6783529Oct 19, 2001Aug 31, 2004Depuy Orthopaedics, Inc.Non-metal inserts for bone support assembly
US6786908Aug 2, 2001Sep 7, 2004Depuy Orthopaedics, Inc.Bone fracture support implant with non-metal spacers
US6808527Mar 25, 2002Oct 26, 2004Depuy Orthopaedics, Inc.Intramedullary nail with snap-in window insert
US7018380Dec 21, 2001Mar 28, 2006Cole J DeanFemoral intramedullary rod system
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US7410488Feb 18, 2005Aug 12, 2008Smith & Nephew, Inc.Hindfoot nail
US7655009Nov 30, 2004Feb 2, 2010Smith & Nephew, Inc.Humeral nail
US7867231Jan 30, 2006Jan 11, 2011Cole J DeanFemoral intramedullary rod system
US8529629 *Jun 29, 2009Sep 10, 2013Exactech, Inc.Shoulder prosthesis with humeral fracture stem
US8734462Mar 5, 2013May 27, 2014Si-Bone Inc.Systems and methods for the fixation or fusion of bone using compressive implants
US8778026Mar 8, 2013Jul 15, 2014Si-Bone Inc.Artificial SI joint
US20090265010 *Jun 29, 2009Oct 22, 2009Laurent AngibaudShoulder prosthesis with humeral fracture stem
US20110082507 *May 9, 2006Apr 7, 2011Kaj KlaueOsteosynthesis Device
US20110118796 *Jan 18, 2011May 19, 2011Reiley Mark ASystems and methods for the fixation or fusion of bone
USRE44501Aug 12, 2010Sep 17, 2013Smith & Nephew, Inc.Hindfoot nail
DE3432928A1 *Sep 7, 1984Mar 20, 1986S & G Implants GmbhVerbindung der beiden zugekehrten enden eines unterbrochenen roehrenknochens oder eines prothesengelenkteiles
DE19813914A1 *Mar 28, 1998Sep 30, 1999Peter BrehmSpecifically shaped surgical nail for treatment of pet with fractured bone
WO2003065913A1 *Nov 26, 2002Aug 14, 2003Juergen KleinDevice, especially an intramedullary nail and/or a sleeve for inserting into tubular bones
Classifications
U.S. Classification606/62, 411/487, 411/458
International ClassificationA61D1/00, A61B17/68, A61B17/72
Cooperative ClassificationA61B17/72, A61D1/00, A61B17/7283
European ClassificationA61D1/00, A61B17/72, A61B17/72H