Abstract
An intertrochanteric fracture fixation device. The device comprises an anterior an anterior right lateral quadrangular shaft, a posterior quadrangular shaft, an anterior left medial hemi quadrangular shaft, a plurality of screws and a plurality of rods. The vertical arm of anterior right lateral quadrangular shaft enters into the vertical arm of the posterior quadrangular shaft and the horizontal arm of the anterior left quadrangular shaft is inserted into the horizontal arm of the posterior quadrangular shaft. A plurality of spikes is present on both the combined parts of the device. The distance between each spike is 20 mm. The three shafts i.e. anterior right lateral quadrangular shaft, a posterior quadrangular shaft and an anterior left medial hemi quadrangular shaft are combined and fixed to the proximal part of the fractured site. Again the three shafts are combined and fixed to the distal part of the fractured site of the bone.
Claims
1. An intertrochanteric fracture fixation device, the device comprising: an anterior right lateral quadrangular shaft; two spikes on the interior region; a posterior quadrangular shaft; an anterior left medial hemi quadrangular shaft; a plurality of rods; and a plurality of screws, wherein the vertical arm of anterior right lateral quadrangular shaft enters into the vertical arm of the posterior quadrangular shaft and the horizontal arm of the anterior left quadrangular shaft is inserted into the horizontal arm of the posterior quadrangular shaft.
2. The device as claimed in claim 1, wherein the device is made up of stainless steel 348L (316L) with chronic-cobalt coverage or titanium.
3. The device as claimed in claim 1, wherein a plurality of spikes are present on all three shafts of the device, wherein base of each spike is 2 mm and height is 2.5 mm, wherein the distance between each spike is 20 mm.
4. The device as claimed in claim 1, wherein the anterior right lateral shaft comprises of a horizontal arm length of 35 mm with a diameter of 5 mm, wherein a vertical arm of the anterior right lateral segment is 55 mm with 3 mm diameter.
5. The device as claimed in claim 1 wherein the anterior left medial hemi quadrangular shaft comprises a vertical arm of 30 mm with diameter of 5 mm, wherein the length of a horizontal arm is 50 mm with 5 mm diameter.
6. The device as claimed in claim 1, wherein the posterior quadrangular shaft comprises a vertical arm of 50 mm and a horizontal arm of length 30 mm.
7. The device as claimed in claim 1, wherein the first part of the three quadrangular shafts is assembled and is fixed to a proximal part of the fractured site, and again a second part of the three quadrangular shafts is assembled and is fixed to a distal part of the fractured site.
8. The device as claimed in claim 1, wherein the proximal part and the distal part are connected by using the plurality of rod and the plurality of screws.
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0010] FIG. 1 (a): Illustrate a preliminary design that has been further developed for optimal design and functionality. The part is only history of the present invention and is not used in surgery. The final design comprises of two identical proximal and distal segments that are connected at 3 loci on each right angle port and secured using screws such as Herbert, pins or spring system.
[0011] FIG. 1 (b): Illustrate a brushed interior wall of preliminary design;
[0012] FIG. 1 (c): Illustrate perspective view of a preliminary design;
[0013] FIG. 2 (a): Illustrate a perspective view of a posterior quadrangular shaft;
[0014] FIG. 2 (b): Illustrate a brushed interior wall of the posterior quadrangular shaft;
[0015] FIG. 2 (c): Illustrate a perspective view of a posterior quadrangular shaft;
[0016] FIG. 2 (d): Illustrate a perspective view of a posterior quadrangular shaft consists of 50 mm vertical shaft and 30 mm horizontal shaft. The two parts have a circular barrel interior for the introduction of FIGS. 3 (a) and 3 (b) on each side. A plurality of spikes is present on both the shafts and distance between each spike is 20 mm;
[0017] FIG. 3 (a): Illustrate a perspective view of an anterior right lateral quadrangular shaft;
[0018] FIG. 3 (b): Illustrate a brushed interior wall to provide a firm attachment;
[0019] FIG. 3(c): Illustrate a perspective view of anterior right lateral quadrangular shaft consists of 35 mm horizontal shaft and 55 mm vertical shaft that is 3 mm in diameter and enters into posterior quadrangular shaft. A plurality of spikes is present on the horizontal shaft.
[0020] FIG. 4 (a): Illustrate a perspective view of an anterior left medial hemi quadrangular shaft;
[0021] FIG. 4 (b): Illustrate a brushed interior wall to provide a firm attachment;
[0022] FIG. 4 (c): Illustrate a perspective view of anterior left medial hemi quadrangular shaft comprises a 50 mm horizontal shaft and 30 mm vertical. A plurality of spikes is present on the horizontal shaft.
[0023] FIG. 5: Illustrate a perspective view of an intertrochanteric bone fixation device installed on a fractured femur;
[0024] FIG. 6 (a): Illustrate a first part of the fixation device by combining three quadrangular shafts;
[0025] FIG. 6 (b): Illustrate a second part of the fixation device by combining three quadrangular shafts; and
[0026] FIG. 6 (c): Illustrate a combination of FIGS. 2 (a), 3 (a) and 4 (a).
DETAILED DESCRIPTION OF THE INVENTION
[0027] FIG. 1 (a) describes a preliminary design that has been further developed for optimal design and functionality. The preliminary design has a plurality of spikes (7), a hole (6) and a shaft (1). FIG. 1(b) describes a brushed interior wall (4) of the preliminary design. FIG. 1(c) describes a preliminary design.
[0028] FIG. 2 (a) describes a perspective view of the posterior quadrangular shaft (31). The posterior quadrangular shaft (31) has a hollow vertical arm (5), a hollow horizontal arm (8) and a hole (6). Both horizontal arm and vertical arm comprises a plurality of spikes (7). FIG. 2(b) describes a brushed interior wall (21) of the posterior quadrangular shaft (31). FIGS. 2 (c) and 2 (d) describes a posterior quadrangular shaft (31). The height of the vertical arm (5) is 30 mm and the length of the horizontal arm (8) is 30 mm. The distance between each spike (7) is 20 mm.
[0029] FIG. 3 (a) describes a perspective view of an anterior right lateral quadrangular shaft (33). The anterior right lateral quadrangular shaft (33) has a vertical arm (9), a horizontal arm (12) and a hole (6). FIG. 3 (b) describes a perspective view of a brushed interior wall (21) to provide a firm attachment. FIG. 3 (c) describes a perspective view of an anterior right lateral quadrangular shaft (33). The height of the vertical arm (9) is 55 mm and length of the horizontal arm (12) is 35 mm. The diameter of the vertical arm (9) is 3 mm. The vertical arm (9) of the right lateral quadrangular shaft (33) is inserted into the vertical arm (5) of the posterior quadrangular shaft (31). A plurality of spikes (7) is present on the horizontal arm (12) of the anterior right lateral quadrangular shaft (33).
[0030] FIG. 4 (a) describes a perspective view of an anterior left medial hemi quadrangular shaft (35). The anterior left medial hemi quadrangular shaft (35) has a horizontal arm (16) and a vertical arm (13). FIG. 4 (b) describes a brushed interior wall (21) to provide a firm attachment. FIG. 4 (c) describes a perspective view of anterior left medial hemi quadrangular shaft (35). The vertical arm (13) of the anterior left medial hemi quadrangular shaft (35) is 30 mm and the horizontal arm (16) is 50 mm. A plurality of spikes (7) is present on the vertical arm (13) of the anterior quadrangular left medial hemi shaft (35). The distance between each spike (7) is 20 mm.
[0031] FIG. 5 describes a perspective view of an exemplary compliant intertrochanteric bone fixation device installed on a fractured femur. The device is fixed to the fractured part of the bone. The three parts i.e. posterior quadrangular shaft (31), anterior right lateral quadrangular shaft (33) and anterior left medial hemi quadrangular shaft (35) are combined together to form a first part (23) of the intertrochanteric bone fixation device. The first part (23) of the device is fixed to the proximal part of the fractured site. Again the three parts are combined to form a second part (25) and similarly the second part (25) of the three shafts is fixed to the distal part of the fractured site. The two combined parts are connects together by a plurality of rods (27) by using a plurality of screws (29).
[0032] FIG. 6 (a) describes a first part (23) of the fixation device by combining three quadrangular shafts. FIG. 6 (b) describes a second part (25) of the fixation device by combining three quadrangular shafts. FIG. 6 (c) describes a combination of posterior quadrangular shaft (31), anterior right lateral quadrangular shaft (33) and anterior left medial hemi quadrangular shaft (35). The vertical arm (9) of the anterior right lateral quadrangular shaft (33) is inserted into the vertical arm (5) of the posterior quadrangular shaft (31). The horizontal arm (16) of the anterior left medial hemi quadrangular shaft (35) is inserted into the horizontal arm (8) of the posterior quadrangular shaft (31).
[0033] Construction material comprises of stainless steel 348L (316L) with chrome-cobalt coverage or titanium to reduce rejection or hypersensitivity reactions. Device is used under aseptic techniques and sterile. Usage of dynamic hip screws poses the risk of femoral head penetration by screws, fracture of femoral cortex, necrosis of femoral head and varus hip deformity (coxa vara). In order to prevent these problems preservation of the existing bone and muscles is important. Usage of intertrochanteric fixation device as a temporary or permanent treatment option helps to reduce muscle tone and prevent complications associated with screw and IM nails. Intertrochanteric device minimizes disruption to bone, has reduced tissue disturbance and postop pain and rehab potential.
[0034] The fracture is reduced as by longitudinal traction, internal rotation and adduction. Sagging of fracture site is corrected prior to intertrochanteric fixation. Skin incision of 4-6 centimeter is required distally at the tip of the greater trochanter. After meticulous open reduction of fracture parts, the intertrochanteric bone fixation device is inserted to the proximal part and distal parts of the fracture site in order to achieve a sequre grip externally by using a plurality of screws.
[0035] Then by power saw a cut is made on the femoral neck on the classic way and evacuate it, In case acetabulum is healthy then hemiarthroplasty is done. In case acetabulum is healthy then total hip arthroplasty is done. Then by reaming of proximal shaft and decision making for cement or uncemented femoral stem should fix, both, femoral fracture site and do arthroplasty to solve the problem of intertrochanteric fracture basically.
