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Publication numberUS3477428 A
Publication typeGrant
Publication dateNov 11, 1969
Filing dateJun 29, 1967
Priority dateJun 29, 1967
Also published asCA922194A1, DE1766597A1
Publication numberUS 3477428 A, US 3477428A, US-A-3477428, US3477428 A, US3477428A
InventorsHare Glenn F
Original AssigneeDyna Med Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined splint and traction device
US 3477428 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Nov. 11, 1969 G. F. HARE COMBINED SPLINT AND TRACTION DEVICE Filed June 29, 1967 GLENN F. HARE INVENTOR United States Patent U.S. Cl. 128-85 6 Claims ABSTRACT OF THE DISCLOSURE An improved splint and leg traction means with a ratchet arrangement for applying and maintaining traction on a fractured leg including a member for retaining the foot in a supported position and novel transverse splint straps.

BACKGROUND OF INVENTION Fractures of the extremities require appropriate splinting. It is epitomized in the aphorism Splint em where they lie. It is generally recognized that splints should be applied at the scene of injury before the patient is moved.

For thigh and leg fractures the application of a slow, steady pull to relax the muscles and not produce irritation is recommended therapy. A gentle and steady pull should be in the long axis of the extremity. This brings the fragment which can be controlled into alignment with the fragment which cannot. Chance for injury to soft tissue, and blood vessels are reduced and relief from pain is accomplished in this manner. A small fracture might otherwise mean a large disability.

Prior first aid art includes the Thomas ring splint. Tongue depressors for a Spanish Windlass action to increase and maintain traction is advised. The use of a foot support, if available is suggested. Thereafter the patient should be transported with extreme care and gentleness. See The Management of Fractures and Soft Tissue Injuries, 2nd edition, American College of Surgeons, p. 78.

Upon hospitalization, the prior art leaves something to be desired. Skeletal traction has the advantage that it is more efficient than adhesives and glue applied to the skin; more weight can be used and is more comfortable, if applied correctly. But according to Management of Fractures, etc., Conwell and Reynolds, 7th edition, p. 100, In many clinics skeletal traction has become a lost art. Also, even under the best of conditions, the bone will become infected from the pin wound.

SUMMARY My device has a heel support tape as a part of the sling and traction combination. This, coupled with a U-shaped member under the heel permits easy and safe handling of patients. A ratchet arrangement is adapted to sensitive control of the amount of force applied to the leg. Even though the force is critical and should be varied, the continuous use of my device is acceptable at all stages of therapy.


FIGURE 1 is a perspective view of the device, complete except the foot tape support.

FIGURE 2 is a perspective view of the foot tape support with the heel portion.

FIGURE 3 is a perspective view of the device showing it in use.

FIGURE 4 is a perspective view of a modification of my device suitable for adapting to the existing Thomas splint.

FIGURE 5 is a close-up perspective of the foot end of 3,477,428 Patented Nov. 11, 1969 ICC the device with arrows to illustrate the direction of force.

FIGURE 6 is a brake detail part of the ratchet assembly, and

FIGURE 7 is a detail of an adjustable portion of the parallel splint rods.

In the drawing, wherein like numerals represent like parts throughout, the numeral 1 is one of two identical parallel rod members characteristic of the well known Thomas splint. The rods telescope into tubular sections 2 to accommodate patients with legs of various lengths. As shown in FIGURE 7, a locking arrangement may be formed of pin 39 on spring-steel arm 9. It fits into a plurality of recesses 37 through orifice 38 of item 2.

Elements transverse to the parallel members include the half ring cradle 6 for patients leg 36. It is swively mounted at the ends of 2 for movement in the direction of the arrow by dual universal joints 5. Also traversing the space between the rods are a plurality of supports 3, preferably three in number, at regular intervals, free to slide in the direction of arrows 14 of FIGURE 1. With each support are elastic bands 8 and 10 two sections which lock over the 'leg in a bandage fashion. For this I prefer to use modern cohesive materials which grip without tying, buckling or snapping. Completing the transverse elements is non-elastic strap 4 with a buckle and wire brackets 7. It also may slide alongtubular frame 2.

At the foot end of the device I have provided novel U- shaped support member 12 secured to rods 1 by brackets 24 on each side. This obivates the necessity of a separate foot mount and keeps the foot from bumping a hard surface.

Much of my invention resides in a ratchet pulling means or system 13. It comprises a spool 28 with spacers 26 which revolves in the direction of arrows of FIGURE 5 by manual operation of handle 11. This pulls the foot and leg of the patient in the direction of the arrows of FIGURE 3. When desired tension is acquired spring steel brake 25 engages teeth 35 of cog 27, see FIGURE 6. Finger pressure at the place indicated by arrow 33 moves item 25 in direction of arrow 34 releasing the ratchet for a new position. A spring metal handle retainer 30 may look onto handle 11 and swing out of the way when the handle is operated. Nylon belt 29 with metal strip 31 wraps onto spool 28 as illustrated.

Snap fasteners 32 connect the described ratchet system to tape support 15. It is preferably made of non-elastic nylon material. At each end thereof are two rings 16 for engagement with fastener 32. A tape heel portion 17 is integral therewith by T-shaped connection at one end and a plurality of chain-linked rings 18 at the opposite end. FIGURE 2 shows the support in an open position and FIGURE 3 shows the support in position for use.

Lastly, a modification of the existing Thomas splint 19 is within the scope of my invention. This is shown in FIG- URE 4. The Thomas splint is made for either leg by simply turning it over. In such instances I have a rectangular support member 21 for use on either leg. My modification is an adapter for splint 19. It has cross bar 22 to align with and abut splint cross piece 23 and it is secured thereto by a plurality of clamps 20, as illustrated. With the modification, conventional Thomas splints may be converted into my novel combination.

I claim:

1. In a leg splint and traction device,

a splint having at least two aligned and spaced elongated members that are connected at each end with spaced cross members, one of said cross members being shaped to abut against the body of the user,

a pulling strap for being attached to the foot of the user including a first tape member that is adapted to be looped around the ankle of the user and crossed over the upper portion of the foot with the ends extending laterally on each side of the mid portion of the foot,

a second tape member connected at one end to said first tape member at a point intermediate the ends of said first tape member so as to lie in the back of the ankle of the user, which second tape member is adapted to extend down the back of the heel of the user with its other end extending away from the foot adjacent the free ends of said first tape member, and

means connected to the ends of said first and said for exerting said tension force. 5. In a leg splint and traction device, a splint having at least two aligned and spaced elonsaid spool, said longitudinal members having a connecting member extending therebetween spaced from said adjacent spool ends,

means releasably securing said longitudinal members to said two aligned elongated members with said connecting member abutting against the other cross member,

means for rotating said spool on said longitudinal members and exerting tension through said belt on the second tape members and to the other cross member li b f a u th t i adapted t b itio d in of said splint for exerting a pulling force on said pu'l said splint, when the users limb is connected to the ing strap that exerts a tension force on the leg of a end of id belt, and user positioned in said splint, which tension force 18 locking means for locking said spool in given rotational exerted through said first and second tape members i i to not substantially bend the forward portion of t 6. In a leg splint and traction device as claimed in claim foot downward y. 5 including, 2. II! a leg splint and traction device as claimed in claim a rectangular shaped member secured at substantially 1 in which, the mid points of a pair of its adjacent sides to the said second strap has means for varying he eng h t e 20 ends of said longitudinal members at the connection of between its connection with said first tape memto id Spool l her and said connector means, whereby the connection to said connector means is at the center line of References Cited the leg and the pulling force exerted on said pulling UNITED STATES PATENTS strap is on the center line of the leg of the user. 3. In a leg splint and traction device as claimed in claim 590,625 9/1897 Paquette 128-85 2 in which, 799,664 9/1905 Norwood 128-75 XR said length varying means of said second strap c'Om- 819,607 5/1906 Shafer 128 85 prises a plurality of rings connected in a string, in 2,007,127 7/1935 Longfellow 128-85 which selective ones of said rings are connected to 2,282,653 5/1942 Hermark said connector means 2,394,653 2/1946 Auerhaan l2885 4, In a leg s lint and traction device as claimed in claim 2,865,367 12/1958 Sorenson 128 71 2 in yg t t h t FOREIGN PATENTS sai connec ion means comprises a ra c e means connected at said other end connection of said splint 483785 4/1938 Great Bntam' OTHER REFERENCES Fracture Appliances, DePuy Catalog, DePuy Manufactoring Co. Inc., Warsaw, Ind. (1954), p. 52, relied gated members that are connected at each end with UPOIL spaced cross members and with one cross member 40 shaped to abut against the body of the user,

a spool that has an axle with a belt for being wound on said spool,

a pair of spaced aligned longitudinal members with adjacent ends secured to opopsite sides of said spool axle allowing rotation of said spool thereon,

RICHARD A. GAUDET, Primary Examiner R. L. FRINKS, Assistant Examiner Us. 01. XR 128-75

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US590625 *Jan 26, 1897Sep 28, 1897 Fracture apparatus
US799664 *Feb 18, 1905Sep 19, 1905Robert R NorwoodApparatus for treating ankylosis or the knee.
US819607 *Nov 11, 1905May 1, 1906Louis H ShaferSplint.
US2007127 *Oct 14, 1932Jul 2, 1935Harry Herschel LeiterSurgical reduction and extension splint
US2282653 *Aug 13, 1940May 12, 1942Herzmark Maurice HSurgical traction device
US2394653 *Apr 12, 1943Feb 12, 1946Auerhaan Alfred BUniversal splint
US2865367 *Jan 3, 1956Dec 23, 1958Sorenson Dean LTraction table
GB483785A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3618598 *Dec 8, 1969Nov 9, 1971Davis Ronald HLeg traction ankle strap
US3680552 *Nov 27, 1970Aug 1, 1972Bell Oran MTraction splint
US3867930 *May 8, 1973Feb 25, 1975Dora BrownTraction band with integral fasteners
US3978853 *Jun 4, 1975Sep 7, 1976Morrison Medical Products CompanyAnkle hitch
US4079734 *Dec 3, 1976Mar 21, 1978Orthopedic Equipment CompanyTraction device for use with a Thomas splint
US4328794 *Apr 11, 1980May 11, 1982Holmes Robert ETraction splint
US4419991 *Apr 29, 1982Dec 13, 1983Roger LeeSplint
US4679552 *Oct 18, 1985Jul 14, 1987Chattanooga CorporationDrape for arthroscopic surgery
US4890605 *Dec 4, 1987Jan 2, 1990Rosendale Robert WFor use with a stretcher
US4911179 *May 13, 1988Mar 27, 1990Rolls-Royce PlcPatient restraining device for use in physiotherapy
US5718669 *Mar 6, 1995Feb 17, 1998Lots CorporationFor immobilizing a human extremity
US8273044Dec 4, 2009Sep 25, 2012Larson Donald OTraction splint device
DE102008022952A1May 9, 2008Nov 12, 2009Ludwig-Maximilians-Universität MünchenNon-invasive extension-, reposition and/or retention device for e.g. retention of e.g. ankle joint, has alignment device provided with two rotary degrees of freedom and/or transverse degrees of freedom
WO1993021867A1 *Apr 27, 1993Nov 11, 1993Alan F MarbleIntegrated synergistic emergency splint
WO2011144955A1 *May 20, 2010Nov 24, 2011Ben Rowshan Mustapha BalsamTraction system for parts of anatomy
U.S. Classification602/23
International ClassificationA61F5/058, A61F5/04
Cooperative ClassificationA61F5/0585
European ClassificationA61F5/058H2
Legal Events
May 17, 1983PSPatent suit(s) filed