CN213606816U - Traction bow for broken femur for bone setting operation - Google Patents
Traction bow for broken femur for bone setting operation Download PDFInfo
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- CN213606816U CN213606816U CN202022018802.9U CN202022018802U CN213606816U CN 213606816 U CN213606816 U CN 213606816U CN 202022018802 U CN202022018802 U CN 202022018802U CN 213606816 U CN213606816 U CN 213606816U
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Abstract
The utility model discloses a thighbone broken bone traction bow for coaptation operation, when the plane at two ke shi needles place that squeeze into at the thighbone distal end and traction bow are not when a plane, loosen adjusting nut four, traction rod two can be at adapter sleeve internal rotation for the installation of two ke shi needles is the regulation that can arbitrary angle, and is fixed with two ke shi needles and traction bow. After the adjusting nut IV is screwed, the retainer ring is meshed with the end face teeth of the connecting sleeve, so that the rotation of the retainer ring and the traction rod II is limited, the traction rod II can move outwards by continuously rotating the adjusting nut IV, a transverse traction force is applied to the Kirschner wire, and the lateral angulation deformity of the fractured femur can be corrected by adjusting the traction force on one side.
Description
Technical Field
The utility model relates to the technical field of orthopedic medical equipment, in particular to a traction bow for fracture of femur, which is suitable for the fracture surgery of femur and tibia intramedullary nail implantation and percutaneous bone fracture plate implantation.
Background
Femur and shin bone fracture are the common fracture in clinic, because leg muscle strength is powerful, often can appear shortening deformity under the traction of muscle after patient's shin bone takes place, and it is comparatively difficult to restore to the throne in the art, resume its length and effectively maintain. If the patient can not be anatomically reduced during the operation, complications such as malformation healing and poor lower limb force line can occur after the operation, thereby causing traumatic arthritis or osteoarthritis and seriously affecting the limb function and the life quality of the patient.
Intramedullary nail fixation or percutaneous minimally invasive implantation of bone fracture plates is a common treatment method for femoral and tibial fractures, and intraoperative traction is an important means for reducing femoral and tibial fractures and recovering the length of lower limbs. At present, two assistants are generally needed to help traction a patient when an intramedullary nail or percutaneous minimally invasive bone plate is implanted for operation, the two assistants respectively hold the near end and the far end of a broken bone to reposition the femur or tibia, however, the method cannot stably maintain fracture repositioning and lower limb length, and the repositioning effect is not ideal, so that the treatment effect is influenced; moreover, the two assistants can crowd the space of the operator and influence the operation of the operator.
The defects can be overcome by adopting the traction device to reposition the fractured femur or tibia, but the existing traction devices straighten the lower limb, and the intramedullary nail is implanted from the distal end of the femur or the proximal end of the tibia, so that the patient can only perform the operation by keeping the leg-bending posture.
The utility model discloses an automatic draw gear for low limbs fracture coaptation operation is disclosed in chinese utility model patent application CN201911423627.7, the device makes the patient keep leg bending gesture to perform the operation through the support frame that sets up triangle-shaped, the tractive to disconnected bone has been accomplished through articulated and length-adjustable's function between each side to still be equipped with the adjustment mechanism of each angle on the support frame, be convenient for make disconnected bone reset, satisfy the various demands of operation in the art, in order to be applicable to different patients' different situation, popularization nature is higher. However, this device has at least the following disadvantages.
The plane of the mounting positions of the two Kirschner wires on the traction bow at the femur cannot be adjusted, the mounting positions of the two Kirschner wires are always positioned in the same plane with the traction bow, the swing amplitude of the traction bow is limited, and when the plane of the two Kirschner wires passing through the distal end of the femur of a patient is not positioned in the same plane with the traction bow main body, the Kirschner wires cannot be mounted on the traction bow.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a not receive the restriction that passes two ke shi needles place face of patient's thighbone distal end, can guarantee to install the thighbone broken bone traction bow that is used for the coaptation operation on the traction bow with two ke shi needles.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a broken femur traction arch for bone setting operation, characterized by comprising:
drawing a bow;
the two connecting sleeves are respectively fixed at two ends of the opening of the traction bow, the axes of the two connecting sleeves are positioned on the same straight line, the connecting sleeves are provided with circular through holes, and the end surfaces of the outer ends of the connecting sleeves are provided with first teeth;
the two traction rods II are movably arranged in the two connecting sleeves in a penetrating mode respectively, the cross section of each traction rod II is non-circular, external threads are formed in the outer wall of each traction rod II, and the opposite ends of the two traction rods II are detachably fixed with the two ends of the Kirschner wire through the first connecting component;
the two clamping rings are provided with holes matched with the sections of the second traction rods, the two clamping rings are respectively sleeved at the outer ends of the second traction rods, and the inner end surfaces of the clamping rings are provided with second teeth capable of being meshed with the first teeth; and
and the two adjusting nuts IV are respectively screwed on the two traction rods II outside the clamping ring.
The further technical scheme is that a section of annular space is further arranged between the inner wall of the outer end of the connecting sleeve and the second traction rod, a fifth spring is arranged in the annular space, and when the clamping ring is meshed with the connecting sleeve, the fifth spring is in a compressed state.
A further technical solution is that the first connecting component comprises:
the middle part of the adjusting plate is hinged with the second traction rod, and an adjusting long hole is formed in the adjusting plate; and
two locks can slide and locate in the regulation slotted hole to can be fixed with the tip and the regulating plate of a kirschner wire that correspond.
A further aspect is that the lock comprises:
the second bolt penetrates through the adjusting long hole and is limited in rotation;
the pressing ring is sleeved on the second bolt, and a second pressing groove for accommodating the Kirschner wire is formed in the end face, facing the adjusting plate, of the pressing ring;
and the locking nut is screwed on the second bolt and is used for compressing the compression ring.
The further technical scheme is that the surface of the second pressure groove and/or the end face, facing the pressure ring, of the adjusting plate are/is provided with grains for increasing friction force.
A further technical solution consists in that the traction bow comprises:
two traction arms; and
the connecting arm is made of carbon fiber perspective materials, and two ends of the connecting arm are fixed with the end parts of the two traction arms to form an arch structure.
The technical scheme is that a connecting end of the traction arm and the connecting arm is provided with a clamping groove, a transverse bulge is arranged on the inner wall of the clamping groove, two ends of the connecting arm are inserted into the corresponding clamping grooves and are in concave-convex fit with the clamping grooves, and the traction arm and the connecting arm are fixed through screws.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
when the plane where the two Kirschner wires driven into the distal end of the femur are not in the same plane with the traction bow, the adjusting nut IV is loosened, and the traction rod II can rotate in the connecting sleeve, so that the two Kirschner wires can be adjusted at any angle to fix the two Kirschner wires with the traction bow.
After the adjusting nut IV is screwed, the retainer ring is meshed with the end face teeth of the connecting sleeve, so that the rotation of the retainer ring and the traction rod II is limited, the traction rod II can move outwards by continuously rotating the adjusting nut IV, a transverse traction force is applied to the Kirschner wire, and the lateral angulation deformity of the fractured femur can be corrected by adjusting the traction force on one side.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic side view of the middle pulling arm and the connecting arm of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 and 2, one embodiment of the traction bow for fractured femur of the present disclosure for bone setting operation includes a traction bow 211, two connection sleeves 212, two traction rods two 213, two collars 214, and two adjusting nuts four 215.
The two connecting sleeves 212 are respectively fixed at two ends of the opening of the traction bow 211, are provided with round holes, the axes of the round holes are arranged along the width direction of the thigh bearing surface 2, the connecting sleeves are provided with round through holes, and the end surfaces of the outer ends of the connecting sleeves are provided with a first tooth 2121.
The two second traction rods 213 are respectively and movably arranged in the two connecting sleeves 212 in the axial direction and can move and rotate in the connecting sleeves 212 in the axial direction, external threads are arranged on the outer walls of the second traction rods 213, the cross sections of the external threads are non-circular, and the opposite ends of the two second traction rods 213 are detachably fixed with the two ends of the Kirschner wire by virtue of the first connecting assembly.
The two collars 214 are provided with holes matched with the cross sections of the second pulling rods 213, the collars 214 and the second pulling rods 213 cannot rotate relatively, the two collars 214 are respectively sleeved at the outer ends of the second pulling rods 213, and the inner end surfaces of the collars 214 are provided with second teeth 2141 capable of being meshed with the first teeth 2121.
The two adjusting nuts four 215 are respectively screwed on the two pulling rods two 213 outside the collar 214.
When the plane of two Kirschner wires driven at the far end of the femur is not in the same plane with the traction bow 211, the adjusting nut IV 215 is loosened, no meshing force exists between the clamping ring 214 and the connecting sleeve 212, and the traction rod II 213 can rotate in the connecting sleeve 212 to adjust the plane of the connecting assembly I, so that the connecting assembly I can be fixed with the two Kirschner wires.
After the adjusting nut IV 215 is screwed, the clamping ring 214 is meshed with the end face teeth of the connecting sleeve, so that the rotation of the clamping ring 214 and the traction rod II 213 is limited, the traction rod II 213 can be moved outwards by continuously rotating the adjusting nut IV 215, the transverse traction force is applied to the Kirschner wire, and the lateral angulation deformity of the fractured femur can be corrected.
According to an embodiment of the present disclosure, an annular space is further provided between the inner wall of the outer end of the connecting sleeve 212 and the pulling rod two 213, a spring five 216 is disposed in the annular space, and when the collar 214 is engaged with the connecting sleeve 212, the spring five 216 is in a compressed state.
After the fourth adjusting nut 215 is loosened, the collar 214 can be quickly separated from the connecting sleeve under the action of the fifth spring 216, so that the second pulling rod 213 can be rotated.
According to one embodiment of the present disclosure, first connecting member includes an adjustment plate 217 and two locking members.
The middle part of the adjusting plate 217 is hinged with the second pulling rod 213, the included angle formed by the adjusting plate 217 and the second pulling rod 213 is adjustable, and an adjusting long hole 2171 is formed in the adjusting plate 217. Two locking members are slidably disposed in the adjustment long hole 2171 and locked, and the locking members are detachably fixed to the end of a corresponding kirschner wire.
The elongated adjustment holes 2171 are adapted to the condition that the two k-wires are not parallel, and the two k-wires are fixed to the adjustment plate 217 by adjusting the positions of the two locking members at each end to adapt to different end distances between the two k-wires.
According to an embodiment of the present disclosure, the locking member includes a second bolt, a pressing ring 218, and a locking nut. The second bolt is inserted into the long adjustment hole 2171 and is limited in rotation, and the specific form of the limitation in rotation can set the cross section of the second bolt to be non-circular. The pressing ring 218 is sleeved on the second bolt, a second pressing groove 2181 for accommodating the kirschner wire is formed in the end face, facing the adjusting plate 217, of the pressing ring, and the section of the second pressing groove 2181 is arc-shaped or triangular, so that the pressing ring is suitable for extruding and fixing kirschner wires with different diameters. The lock nut is screwed on the second bolt and used for pressing the Kirschner wire between the pressing ring 218 and the adjusting plate 217. The clamping nut is screwed to press the pressing ring 218, so that the end part of the Kirschner wire is pressed in the second pressing groove 2181 between the pressing ring 218 and the adjusting plate 217, and the Kirschner wire is fixed.
Furthermore, the surface of the second pressing groove 2181 and/or the end face of the adjusting plate 217 facing the pressing ring 218 are/is provided with grains for increasing friction force so as to increase the stability of the mounting of the kirschner wire.
According to an embodiment of the present disclosure, the traction bow 211 is a split structure, and includes two traction arms 2111 and a connecting arm 2112, the connecting arm 2112 is made of carbon fiber transparent material for easy perspective, and both ends of the connecting arm 2112 are fixed to the ends of the two traction arms 2111 to form an arch structure.
According to an embodiment of the present disclosure, a connecting end of the drawing arm 2111 and the connecting arm 2112 has a clamping groove, a transverse protrusion is provided on an inner wall of the clamping groove, both ends of the connecting arm 2112 are inserted into the corresponding clamping grooves and are in concave-convex fit with the clamping grooves, and the drawing arm 2111 and the connecting arm 2112 are further fixed by screws.
After the fourth adjusting nut 215 is screwed, the fourth adjusting nut 215 extrudes the traction arm 2111 inwards, so that the connection between the traction arm 2111 and the connecting arm 2112 is firmer, and the structure matched with the concave-convex structure is arranged, so that the stress of the connection between the traction arm 2111 and the connecting arm 2112 is concentrated on the concave-convex part, the stress of the wall of the hole of the screw is reduced, the cracking of the connecting arm 2112 is avoided, and the connection is more stable.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (7)
1. A broken femur traction arch for bone setting operation, characterized by comprising:
a traction bow (211);
the two connecting sleeves (212) are respectively fixed at two ends of the opening of the traction bow (211), the axes of the two connecting sleeves (212) are positioned on the same straight line, the connecting sleeves (212) are provided with circular through holes, and the end surfaces of the outer ends of the connecting sleeves are provided with first teeth (2121);
the two second traction rods (213) are movably arranged in the two connecting sleeves (212) in a penetrating mode respectively, the cross section of each second traction rod (213) is non-circular, external threads are formed in the outer wall of each second traction rod (213), and the opposite ends of the two second traction rods (213) are detachably fixed with the two ends of the Kirschner wire through the first connecting assemblies;
the two clamping rings (214) are provided with holes matched with the cross sections of the second traction rods (213), the two clamping rings (214) are respectively sleeved at the outer ends of the second traction rods (213), and the inner end surfaces of the clamping rings (214) are provided with second teeth (2141) capable of being meshed with the first teeth (2121); and
and the two adjusting nuts IV (215) are respectively screwed on the two pulling rods II (213) outside the clamping ring (214).
2. The femoral bone fracture traction bow as claimed in claim 1, wherein an annular space is further formed between the inner wall of the outer end of the connecting sleeve (212) and the second traction rod (213), a fifth spring (216) is arranged in the annular space, and when the collar (214) is engaged on the connecting sleeve (212), the fifth spring (216) is in a compressed state.
3. The femoral distraction of claim 1, wherein the first coupling assembly comprises:
the middle part of the adjusting plate (217) is hinged with the second traction rod (213), and an adjusting long hole (2171) is formed in the adjusting plate (217); and
two locking pieces which can be arranged in the adjusting long hole (2171) in a sliding way and can fix the end part of a corresponding kirschner wire with the adjusting plate (217).
4. The femoral fractured traction bow of claim 3, wherein the locking element comprises:
the second bolt penetrates through the adjusting long hole (2171) and is limited by rotation;
the pressing ring (218) is sleeved on the second bolt, and a second pressing groove (2181) for accommodating the Kirschner wire is formed in the end face, facing the adjusting plate (217), of the pressing ring;
and the lock nut is screwed on the second bolt and is used for pressing the pressing ring (218).
5. The femoral bone fracture traction arch as in claim 4, wherein the surface of the second indent (2181) and/or the end surface of the adjusting plate (217) facing the press ring (218) have texture for increasing friction.
6. The femoral fractured traction bow according to claim 1, wherein the traction bow (211) comprises:
two traction arms (2111); and
the connecting arms (2112) are made of carbon fiber perspective materials, and two ends of each connecting arm (2112) are fixed with the end parts of the two traction arms (2111) to form an arch structure.
7. The femoral distraction of claim 6, wherein the connecting end of the distraction arm (2111) and the connecting arm (2112) has a clip groove with a lateral protrusion on the inner wall of the clip groove, the connecting arm (2112) has two ends inserted into the corresponding clip groove and engaged with the corresponding clip groove, and the distraction arm (2111) and the connecting arm (2112) are further fixed by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022018802.9U CN213606816U (en) | 2020-09-15 | 2020-09-15 | Traction bow for broken femur for bone setting operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022018802.9U CN213606816U (en) | 2020-09-15 | 2020-09-15 | Traction bow for broken femur for bone setting operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213606816U true CN213606816U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022018802.9U Active CN213606816U (en) | 2020-09-15 | 2020-09-15 | Traction bow for broken femur for bone setting operation |
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|---|---|
| CN (1) | CN213606816U (en) |
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- 2020-09-15 CN CN202022018802.9U patent/CN213606816U/en active Active
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