US 2583895 A
Description (OCR text may contain errors)
Jarl- 29, 1952 J. R. SIERANDT 2,583,895
FOOT TRACTION HITCH Filed NOV. 15, 1948 2 SHEETS-SHEET l 12x/@KM Jan- 29, 1952 J. R; slr-:BRANDT FOOT TRACTION HITCH 2 SHEETS--ShEET 2 Filed Nov. l5, 1948 Patented Jan. 29, 1952 YUNiran .STATES PATENT OFFICE assaass I voor TRAoTIoN inro'it John n. .siebanda Kansas city, Mo.; @Elizabeth Siebrandt,` executrix of said Join-1R. Siebrandt,
deceased, assigner, by mesme assignmentsh to Siebrandt Inc., Kansas City, Mo, a corporayApplicati'tnumaber 1s, 194s, sesamo. somos misas. (o1. its-'sa This invention relates to improvements in `a removable traction hitch .for `maintaining ltr-action :on the leg when reduction of a fracture thereof is to be made and while applying a cast.
rllhe .principal object of the Vpresent invention Iis ithe provision of removable traction hitch having hinged traction straps adapted toengage fthe `foot before a .plaster 4cast is :applied thereover, and that can ,be-easily and quickly removed from the `finished cast without disturbing the alignment of the fractured parts.
.Another object of th'e invention is the provision 'of a removable traction hitch having a U-shaped `frame adapted to be drawn from the ii-nished cast and to remove the traction straps therewith.
Other objects are simplicity and economy of construction, ease and eliciency of .operation and adaptability for use in various orthopedic operations. I
With these objects in view as well as other objects which will `appear in the `course of the specication, reference will be had to the draw ing wherein.:
Fig. -1 is a side elevational view of 4floot and leg portion having the removable traction hitch positioned thereon to create a traction while 1a )plaster cast, shown in section, is being applied.
Fig. 2 is a plan view of the assemblage shown in Fig. l with the cast partly broken away to more clearly show` the operating parts.
Fig. 3 is a side elevation of the foot and leg with the removable plaster hitch partially polsitioned thereon.
Fig. 4 is a fragmentary, enlarged section taken on line IV--IV of Fig. 1.
Fig. 5 Vis an enlarged perspective view ofthe frame portion of the hitch, with one of the strap retaining arms opened.
Fig. 6 is a layout view of one of the traction straps, with the assembling wire in place.`
Fig. 7 a sectional view taken on line VII--V'II of Fig. 6.
Fig. 8 is a detached view of the toe guard.
Fig. 9 is an enlarged sectional view takenon line IX--IX of Fig. 4.
Throughout the several views like reference numerals refer to similar parts, 'and the numeral II) designates a frame of general U-shape, prferably made of -metal to present a relatively rigid vstructure having a base l2 and outwardly projecting, 'substantially parallel arms I4. The end portions of said arms are adapted to be positioned respectively at opposite sides of the foot I6 and substantially in alignment with the leg I8. Adjacent its free end each of arms I4 is 2 .provided with a rigidly mounted, outwardly projecting pin 20, the pins carried `by Yboth of arms i 4 being `in axial alignment witheachyother. I4 are adapted to `lie `substantially flat along the sides `o root IIB, and have surcient resilienceto accommodate themselves .readily to feet of dif"- ferent thickness.
A vdorsal strap 22 and a "heel strap 24 are yadapted to `be passed respectively over the dorsurn and under the heelof thefoot, and to be secured .adjacent their ends to pins 20. Said straps are substantially similar,` :and as shown in Figs. 6 and 7, each strap comprises-a .p air of like sections 26 and 28. -Each of said-sections is made of `a length of fabric or other pliable materialilded along its midline and with the halves thereof ycemented :or otherwise joined together. Along its foldededgeeaoh section out ont to present a series of spaced apart loops 30 adapted to b .placed in alternating relation with the loops of `the other sections, and the sections joined together by inserting a soft metal wire through -saidtloops The sections of the dorsal strap are joined by wire 32 which extends along the upper side of the foot to a point spaced outwardly from the toes, and the sections of the heel strap are joined by wire `34 whichV extends below the heel. Adjacent each o f ends. each strap provided with `an eyelet 3 6 said eyelets being adapted to pass -freely over pins 20.
Said eyelets are retained on pins 20 by means of a retaining arm 38 pivotally secured to each of frame arms I4 vat a pointgspaced apart from pin 20 by suitablemeans such as rivet 48. T he free end portion 42 of ann 38 is offset outwardly to be normally in parallel., spaced relationto arm i4, and is provided adjacent its end with a transverse notch 44 adapted to iit `over pin `28 adjacent the outer end thereof. Traction straps 22 and -24 `engage pin `2l) 4between arms `I4 and 38, `and are attached thereto when arm. `38 is pivoted upwardly as shown in Fig.` 8. An upset b'oss 46 formed on arm .38 is adapted to vengage resiliently a recess 4.8 formed therefor in the adjacent portion of `arm I4. thereby normally holding arm 38 in engagement with pin `28. Along its upper edge, the 'oiset portion 42 of each arm 38 is provided with an `inwardly project ing' flange 50 which normally contacts ann I4 and prevents the 'entry of plaster between the two arms.
Thepartsthn the relative positions `shawn in Fig. 3. Normally both the foot and the traction straps are coated with petroleum jelly or oil to prevent adhesion of the plaster cast. A
folded edge with a hole 58 through rwhich wire.
A plaster cast 60 may then be applied 32 passes. to the leg and foot in the usual manner. It will be noted in Fig. 4 that the offset portions 42 ofV arms 38 are sufciently long to project outside of the cast. rihus each arm i4 andthe assofrom outside of said cast to separate said strap sections whereby said frame may be withdrawn from said cast, each of said frame arms and its associated retainer arm providing a window in said cast through which said straps are drawn.
2. A tractionhitch forapplying'traction to a fractured leg asa, castris applied thereto comprising a frame member having substantially parallel arms adapted to extend closely adjacent the sides of the foot and substantially in align- 'ment with the'leg, an outwardly projecting pin .carried rigidly .adjacent the end of each of said arms, a pair of pliable traction straps each divided intermediate 'its ends, a member releasably conciated arm 38 forms a window 62 into the cast.
While the cast is still moist, the plaster may be trimmed about the toes and the toe guard 56 removed, and the vplaster cut away to provide tapering entries to windows 62. When the cast has set suicientlyto permit the traction to'be removed, the traction is rst reduced by slackeningicord 52, and wires 32 and 34 are then drawn longitudinally outwardly through the mold. Said wires are sufliciently pliable that this may be done easily.V Frame l0 may then be drawn out of the cast and the straps 22 and 24 will be drawn through windows 62, each arm I4 of the frame carrying one section of the dorsal strap 22V and one-section of the heel strap 24. Each window 62 is of ample area to permit the passage of the straps. It will be noted that since each strap section is seamless and of uniform thickness, it may be drawn easily fromth-e cast. Scams would cause localized bulk in the straps which might presentobstructions to easy passage through the cast. v v
Thus it will be seen that no part -of the hitcha remains inside of the cast to cause possible pressure on the foot or leg. If desired, windows B2 may be'lled-with additional plaster aftery the hitch has been removed. The hitch may bereassembled for further use by inserting wires 32 and 34V through loops 26 of the straps. And although the hitch has been shown for use in connection with treatment of fractures of the leg, it is readily apparent that it couldibeadapted for use invarious other orthopedic operations'without departing from the spirit of the-invention.`
1. A traction hitch'forl applying traction to a fractured leg as a cast is applied thereto comprising a frame memberhaving' substantially parallel-arms adapted to 'extend closely adjacent the sides of the foot and-substantially in alignment with the leg, a strap retaining arm secured to each-of said frame arms and having a portion disposed in parallel,` spaced relation `from the end portion of said frame arm, a pairof pliable traction straps each comprising-apair of separable sections adapted toV pass respectively over the dorsum and behind the heel and secured at their ends between said frame arms and the associatedl retainer arms, members releasably connecting the sections of said straps, whereby traction may be applied to said leg through said frame and whereby a plaster cast may be formed about said foot and leg over said straps and with ,7
said frame arms extending outwardly from said cast, said' connecting members being operable necting the'sections of each of said straps, saidl straps 'being' adapted to pass respectively over the dorsumland behind the heel and having eyelets adjacent their ends adapted to be passed over said pins, a strap retainer arm carried pivotally by each of said frame arms and having a portion normally disposed in spaced relation from-said frame arm and engaging said pin adjacent its outer end to retain said straps thereon, whereby las a plaster cast is formed about saidV leg and foot said frame arms and retainer arms will project outwardly from said cast, said connecting members being removable from outside said cast for dividing said straps, whereby said frame and said straps may be drawn from said cast.
3. In a traction hitch of the class described for applying traction to a fractured body member as a plaster cast is formed thereabout and Vincluding a frame member adapted to extend into said cast, a pliable traction strapl adapted to pass yabout said body member and joined adjacent its ends to said frame, said strap being divided transversely intermediate its ends into two sections, the adjacent edges of said sections being formed to present loops, and a wire passing through said loops to connect said strap sections, said wire being adapted to extend outwardly through said cast. f
4. The combination, with a traction' hitch of the class described for applying traction to a fractured leg as a cast is formed thereabout and including a frame having a pair of substantially parallel arms adapted to extend into said cast v substantially in alignment with the leg andan outwardly extending pin carried rigidly adjacent the inner end of each of said arms, of a pair of traction straps adapted to pass-respectively over the dorsum and behind the heel of the foot, each of said straps comprising two sections, each of said sections comprising a length of pliable material doubled on itself, said sectionsY havingrtheir doubled edges adjacent and forming loops, a wire passing through said loops tojoin said sections and passing outwardly through said cast, and eyelets inserted adjacent the vends of said straps and adapted to be carried pivotally on said pins. JOI-IN R. SIEBRANDT.
Number Name Y Date 1,971,183 Hawley 4 Aug. 2l, 1934 2,103,942 Gillin v Dec. 28, 1937 2,469,361
Anderson May l0,V 1949