CN116725593A - Talus distraction reduction device for pilot fracture - Google Patents
Talus distraction reduction device for pilot fracture Download PDFInfo
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- CN116725593A CN116725593A CN202310845203.XA CN202310845203A CN116725593A CN 116725593 A CN116725593 A CN 116725593A CN 202310845203 A CN202310845203 A CN 202310845203A CN 116725593 A CN116725593 A CN 116725593A
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- 210000004233 talus Anatomy 0.000 title claims abstract description 145
- 210000002303 tibia Anatomy 0.000 claims abstract description 127
- 210000001699 lower leg Anatomy 0.000 claims abstract 15
- 210000003484 anatomy Anatomy 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 9
- 230000001815 facial effect Effects 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 22
- 206010017076 Fracture Diseases 0.000 description 20
- 210000003141 lower extremity Anatomy 0.000 description 7
- 210000003423 ankle Anatomy 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 241000469816 Varus Species 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010017577 Gait disturbance Diseases 0.000 description 1
- 208000005392 Spasm Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 238000010837 poor prognosis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a talus distraction reduction device for pilot fracture, and relates to the technical field of medical appliances. The distraction restorer comprises a traction rod, a gear, a rack, a guide arm and a positioning clamp; the traction rod is vertically arranged, and racks are arranged at two ends of the traction rod; the guide arm comprises a tibia guide arm and a talus guide arm, and the tibia guide arm is arranged at the upper part of the traction rod; the talus guide arm is arranged at the lower end of the traction rod, the locating clamp is designed on the lower surface of the tail end of the guide arm, a Kirschner wire hole is formed in the upper surface of the locating clamp, and the Kirschner wire penetrates through the wire hole to penetrate into bones. The invention spreads the talus and the tibia on a straight line (lower leg force line) of the coronal plane, and simultaneously adjusts the front and back positions of the talus on the non-coronal plane to achieve the effects of spreading and good resetting, so that the tibia and the talus maintain good linear and facial relation, and the good resetting position of the talus is the core of the tibia joint plane resetting, and has good lower leg force line and tibia joint plane resetting, which is the key of successful operation.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a talus distraction reduction device for pilot fracture.
Background
The pilot fracture refers to a distal tibia fracture involving a tibial articular surface, and the tibial pilot fracture most frequently occurs in high falling, sudden car accident stop, skiing or foot stumbling, so that the articular surface is sunken, broken and separated, metaphyseal bone is crushed, soft tissue is damaged, and most of the fracture is accompanied by fibular fracture, poor prognosis, high treatment difficulty, multiple residual dysfunction and long-term multiple osteoarthritis.
Surgical treatment principle when treating pilot fracture: 1. good resetting and fixing of fibula; 2. anatomic reduction of the distal tibial articular surface; 3. bone grafting; 4 avoid varus deformity. When fracture accidents happen, the fracture part often presents shrinkage, collapse and angulation displacement due to the fact that muscle at the fracture part is contracted by spasm and vertical explosion force during injury; in order to facilitate the reduction and fixation, an spreader is often used for spreading the ankle hole for the operation, so that the short shrinkage displacement is corrected in the operation, the maintenance of the reduction is convenient, and a steel plate is installed, but as two struts of the traditional Kirschner wire spreader are respectively provided with a fork opening, the requirement of spreading the talus can be generally met, the talus can often generate inclined and rotary displacement, so that the talus and the tibia are not on the same force line, the anatomical reduction of the articular surface of the tibia can not be ensured, the fixation of the tibia can possibly have varus deformity, the talus can not be effectively reset, the reduction effect is poor, the operation difficulty is increased, and the treatment effect is seriously affected.
The prior art fractured talus distractor reducer often has the following problems when in use:
1. the traction rod length is difficult to adjust, after the distance is adjusted and fixed to the position of the traction rod, medical staff can easily touch the corresponding limiting component in the operation, so that the traction rod is changed in position, and the distraction effect of the fracture distraction reduction device is poor.
2. Two supporting heads of the traditional Kirschner wire supporting and resetting device are respectively provided with a fork opening, two Kirschner wire holes (the diameters of the pin holes are respectively 2.0mm and 1.5 mm) are formed in the upper surfaces of the fork openings, and the Kirschner wire is driven into human bones to support the talus during operation, but the supporting talus wire is supported by the Kirschner wire commonly used at present, so that the phenomenon of inclination and rotation is often generated at the supporting talus part, the talus and the tibia are not on the same force line, the front and back positions of the talus at ankle holes cannot be adjusted at the same time, the effective resetting of the talus cannot be guaranteed, the resetting effect is poor, and therefore, the anatomical resetting of the tibial articular surface cannot be guaranteed; fixation of the tibia may also have varus deformity, increasing the difficulty of the procedure, leading to failure of the procedure, severely affecting the therapeutic effect.
3. The traditional kirschner wire struts restorer draw bar is designed at one end far away from bones, so that the rigidity of the kirschner wire at the fork opening of the restorer is low, the restorer is easy to deform, and the expanding effect is not ideal.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a talus distraction reduction device for pilot fracture, so as to solve the problems in the prior art, when the reduction fixation of the articular surface of the tibia is carried out, the talus is distracted from an ankle hole by using the distraction device and restored, so that the space anatomic reduction of the talus and the tibia is realized, the lower limb force line is perfect, the space position of the talus is good, and the positioning clamps of the tibia and the talus are respectively designed according to the anatomy structures of the tibia and the talus, and are perfectly clamped with bones; the Kirschner wire hole on the tibia locating clamp is opposite to the tibia spine (the tibia spine and the lower limb force line are basically coincided to bisect the tibia), the central position of the talus locating clamp is opposite to the midpoint of the talus to bisect the talus, the other two Kirschner wires control the rotation and inclination of the talus, and the three-dimensional fixation of the talus is realized by the Kirschner wires; racks are arranged at two ends of a traction rod of the surgical distracting and resetting device, a talus guiding arm and the traction rod are meshed and driven by a gear and a rack, the guiding arm moves up and down on the traction rod, the distracting distance of the distracting device is adjusted according to actual needs, and good linear relation between tibia and talus is maintained; the tibia guiding arm is also meshed by adopting a gear rack to connect the guiding arm to the traction rod, so that the tibia guiding arm can be finely adjusted back and forth along the traction rod, and under the condition that the tibia and the talus are not on the same straight line (the front and back direction is a non-planar surface), the gear handle on the tibia guiding arm is finely adjusted, the linear relation between the tibia and the talus is regulated, the operation difficulty is reduced, and the bone setting operation is smoothly carried out for a patient.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
a talus distraction restorer for pilot fracture comprises a traction rod, a gear, a rack, a guide arm and a positioning clamp; the utility model provides a bone fracture locating device, including the traction lever, the traction lever is vertical to be placed, the guide arm includes shin bone guide arm, talus bone guide arm, shin bone guide arm installs on the rack of traction lever upper end, talus bone guide arm installs in traction lever lower extreme rack department, shin bone guide arm is connected to the traction lever with talus bone guide arm through the meshing transmission between gear and the rack, the locating clip design is at the terminal lower surface of guide arm the kirschner's pin hole has been seted up to the upper surface of locating clip, and the kirschner pin runs through whole locating clip, and the kirschner pin passes in the skeleton of kirschner pin hole and puncture fracture position, restriction skeleton is in the space degree of freedom, fixes a position the skeleton.
Further, the traction rod is arranged in an inverted L shape, and racks are designed at two ends of the traction rod; the utility model provides a tibia guide arm, including tibia guide arm, talus guide arm, the rack department in the traction lever upper end is installed to tibia guide arm, installs the gear in the tibial guide arm adapter sleeve, and the gear top is designed with the gear handle, rotates the gear handle, the gear with the rack cooperation transmission of traction lever upper end makes tibia guide arm can realize the fore-and-aft movement of a small circle along the rack of traction lever upper end, makes tibia guide arm can realize the fore-and-aft fine setting along the traction lever, when the circumstances that tibia, talus are not in a straight line (anterior-posterior direction is losing the form face), the gear handle on the tibia guide arm of fine setting adjusts the linear relation between tibia and the talus, reduces the operation degree of difficulty.
Further, the talus guide arm is arranged at the tooth strip at the lower end of the traction rod, a gear is also arranged in the connecting sleeve of the talus guide arm, a handle is designed on the gear, the gear handle is rotated, the gear is meshed with the rack at the lower end of the traction rod after being stressed, the talus guide arm moves up and down on the traction rod, the distance between the talus guide arm and the tibia guide arm is changed, so that the spreading distance between the spreading and resetting devices is adjusted, the basic functions of spreading and resetting the talus and the tibia are realized, and an operation space is provided for bone setting operation.
Further, the locating clip is designed at the tail end of the guide arm, and the locating clip comprises a tibia locating clip and a talus locating clip; with reference to the tibia anatomy structure, the tibia locating clamp main body is designed to be of a long V-shaped block structure, the long V-shaped block can limit four degrees of freedom of the tibia in space, a Kirschner pin hole (with the diameter of 3.0 mm) is formed in the upper surface of the long V-shaped block locating clamp, the Kirschner pin hole is opposite to the tibia ridge which is basically coincident with the lower limb force line and bisects the tibia, the pin hole penetrates through the V-shaped block, the Kirschner pin penetrates through the pin hole to penetrate into the bone, the other two degrees of freedom of the tibia are limited, six degrees of freedom of the tibia in space are completely limited, and the relative position of the tibia and a traction link in space is not changed any more.
Further, the talus locating clip references the talus anatomy, and because the two sides of the talus are concave, the two locating surfaces of the talus locating clip are designed to be inward convex, so that the talus locating clip can be better attached to the talus. However, because the exposed part of the talus is smaller, the design of the talus locating clamp is smaller than that of a tibia locating clamp, at the moment, the talus locating clamp adopting a V-shaped block structure can only limit two degrees of freedom of the talus, three triangular Kirschner pinholes (with the diameter of 2.0 mm) are formed on the upper surface of the locating clamp, the middle Kirschner pinholes of the talus locating clamp are opposite to the midpoint of the talus to bisect the talus, and three Kirschner pins penetrate through the pinholes and penetrate into the talus, so that the rest degrees of freedom in the space of the talus are limited, six degrees of freedom of the talus are completely limited, the relative positions of the talus and a distraction restorer are not changed, the phenomenon that the talus is inclined and rotated again is guaranteed by the Kirschner pins on the talus locating clamp, the talus and the tibia depend on a traction rod to maintain a good space anatomy resetting relation, the operation difficulty and operation time are reduced, and pain of patients is relieved.
The invention has the following beneficial effects: according to the talus expansion and reduction device for the pilot fracture, when pilot fracture operation is carried out, the talus is expanded and reduced from the ankle hole by using the expansion device, the talus and the tibia keep good linear and surface relation, so that the talus and the tibia achieve space anatomy reduction, the lower limb force line is perfect, the space position of the talus is good, and the positioning clamp of the tibia and the talus is designed according to the anatomy structure of the tibia and the talus respectively, and is perfectly clamped with the bone, so that the space degree of freedom of the tibia and the talus is limited;
the Kirschner wire hole on the tibia locating clamp is opposite to the tibia ridge and is basically coincided with the lower limb force line and bisects the tibia ridge, the central position of the Kirschner wire on the talus locating clamp is opposite to the midpoint of the talus to bisect the talus, the other two Kirschner wires limit the rotation and the inclination of the talus, and the three Kirschner wires are used for fixing the talus on the space position;
racks are designed at two ends of a traction rod of the surgical distraction restorer, a talus guiding arm and the traction rod are meshed and driven by using gears and racks, the talus guiding arm can move up and down on the traction rod, the distraction distance of the distractor is adjusted according to actual surgical requirements, and good coronal linear relation (good lower limb force line) between tibia and talus is maintained;
the tibia guiding arm is also connected to the traction rod by adopting gear-rack meshing, so that the tibia guiding arm can be finely adjusted back and forth along the traction rod, and when the tibia and the talus are not in the same straight line (the anterior-posterior direction is a plane, the gear handle on the tibia guiding arm is finely adjusted, and the linear relation between the tibia and the talus in the sagittal plane (anterior-posterior direction) is adjusted;
the traction rod is arranged close to a bone part, so that the moment applied to the traction rod by the talus and the tibia is reduced, the traction rod is small in bending deformation, a good straight rod state can be maintained, the talus and the tibia are spread and reset (the talus is spatially dissected and reset in an ankle hole), the operation difficulty is reduced, the operation time is saved, and the clinical curative effect is improved.
Drawings
FIG. 1 is a perspective view of a distracting repositor according to an embodiment of the invention;
FIG. 2 is a front view of the distractor reducer according to an embodiment of the invention;
FIG. 3 is a schematic view of a talar guide arm according to an embodiment of the invention;
FIG. 4 is an elevation view of a talar guide arm according to an embodiment of the invention;
fig. 5 is a perspective view of a tibial guide arm according to an embodiment of the present invention;
FIG. 6 is an elevation view of a tibial guide arm according to an embodiment of the present invention;
FIG. 7 is a plan view of a rack and pinion mating surface according to an embodiment of the present invention;
in the drawings, the reference numerals are as follows:
1-traction rod, 2-talus guiding arm, 3-talus guiding arm connecting sleeve, 4-tibia guiding arm, 5-tibia guiding arm connecting sleeve, 6-tibia locating clamp, 7-arc groove, 8-talus locating clamp, 9-elastic clamping piece, 10-Kirschner wire, 11-gear, 12-gear handle, 13-rack, 14-Kirschner wire hole, 15-gear shaft hole and 16-gear shaft.
Detailed Description
In order to more clearly describe the technical scheme of the embodiment of the present invention, the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
Fig. 1 is a perspective view of a distraction reduction device according to an embodiment of the present invention, and fig. 2 is a front view of the distraction reduction device according to an embodiment of the present invention, as shown in fig. 1-2, the pilot fracture talus distraction reduction device comprises a traction rod 1, a gear 11, a rack 13, a talus guiding arm 2, a tibia guiding arm 4, a k-wire 10, a tibia positioning clip 4 and a talus positioning clip 8; the guide arm comprises a tibia guide arm 4 and a talus guide arm 2, wherein the tibia guide arm 4 is arranged at a toothed bar at the upper end of a traction rod 1, the talus guide arm 2 is arranged at a toothed bar at the lower end of the traction rod 1, the traction rod 1 is vertically arranged, the traction rod 1 is respectively connected with the tibia guide arm 4 and the talus guide arm 2 by means of a gear 11 and a rack 13, the positioning clamps are respectively designed on the lower surfaces of the tail ends of the two guide arms, a Kerr needle hole 14 is formed in the upper surface of each positioning clamp, a Kerr needle 10 penetrates through a hole and is driven into bones of fracture parts, the bones and the positioning clamps are fixed together, and the gears 11 are arranged in guide arm connecting sleeves 3 and 5.
In the embodiment, the traction rod 1 is arranged in an inverted L shape, the racks 13 are designed at two ends of the traction rod, the traction rod 1 bears the extrusion force for supporting and expanding the two bones according to the hardness of the traction rod, and the traction rod is a supporting operation space for bone fracture surgery; the traction rod 1 of the traditional spreader is arranged far away from the bone head end, after the bone is spread, as the traction rod is far away from the fracture part, the moment applied by two bones is large, the generated bending deformation is large, the traction rod is difficult to maintain in the original state, and the two bones are easy to be not on the same straight line.
In this embodiment, the guiding arm includes a talus guiding arm 2 and a tibia guiding arm 4, as shown in fig. 3-4, the lower end of the talus guiding arm 2 is designed with a talus guiding arm connecting sleeve 3, the connecting sleeve is provided with a gear shaft hole 15, as shown in fig. 7, the gear 11 is integrally cast and formed, and includes a gear 11, a gear handle 12 and a gear shaft 16, the gear mechanism is installed in the gear shaft hole 15 through the gear shaft 16, the gear handle 12 is rotated under the force of the gear, the gear and the gear rack are meshed for transmission, and the talus guiding arm connected with the gear is driven to move up and down along the traction rod, so that the supporting distance between supporting and restoring devices is adjusted, the basic functions of supporting and restoring devices for supporting the talus and tibia are realized, and an operation space is provided for bone setting operation.
In this embodiment, as shown in fig. 5-6, the lower end of the tibial guiding arm 4 is designed with the tibial guiding arm connecting sleeve 5, the connecting sleeve 5 is also provided with the gear shaft hole 15, the tibial guiding arm is connected to the upper end of the traction rod through the engagement between the gear and the rack, when the gear handle 12 is rotated, the gear and the rack at the upper end of the traction rod are cooperatively driven, so that the tibial guiding arm can move back and forth along the rack at the lower end of the traction rod in a small range, the tibial guiding arm can be finely adjusted back and forth along the traction rod, and when the situation that the tibia and the talus are not in a straight line (the front-back direction losing surface) occurs, the gear handle on the tibial guiding arm is finely adjusted, the linear relationship between the tibia and the talus is adjusted, the operation difficulty is reduced, and the operation is smoothly performed.
Example 2
Fig. 3-4 are schematic views of a talus guide arm, and fig. 5-6 are schematic views of a tibia guide arm, wherein a locating clip is respectively arranged at the tail ends of the two guide arms to achieve clamping and locating of the talus and tibia.
In this embodiment, with reference to the anatomy structure of the talus, the two sides of the talus are concave, the top of the talus is in a bulge arc shape, the positioning clamp 8 of the talus is designed, the two clamping pieces of the positioning clamp are designed to be of an inward convex structure, the positioning clamp is made of metal materials with good elasticity such as beryllium copper alloy, and when the talus is clamped, the elastic clamping piece 9 can be more attached to the talus by self elasticity. However, because the talus is smaller, the talus is difficult to incline, rotate and the like only by virtue of the locating clip, the three Kirschner pinholes 14 are formed on the upper surface of the locating clip, the three pinholes are distributed in a triangular shape, the middle Kirschner pinhole of the talar locating clip is opposite to the midpoint of the talar to equally divide the talar, the Kirschner wire 10 is driven into the pinholes and then penetrates into the talar, the three Kirschner wires are matched with the elastic clamping piece to completely limit six degrees of freedom of the space of the talar, and the talar is firmly connected to the distraction restorer without inclining and rotating.
In this embodiment, the tibia positioning clamp 6 is mounted at the end of the tibia guiding arm 4, and refers to a tibia anatomy structure, the tibia fixing clamp main body is designed into a long V-shaped block structure, the long V-shaped block can limit four degrees of freedom of the tibia in space, the center of the top of the positioning clamp is provided with one k-pin hole 14, the k-pin hole is opposite to the line of force of the lower limb and is basically coincident with the line of force and bisects the tibia spine, the k-pin 10 penetrates through the pin hole and then penetrates into the tibia, and the long V-shaped block is matched, so that six degrees of freedom of the tibia in space are completely limited, and the tibia cannot move relative to the spreader; with reference to the tibia anatomical structure, the inner surface of the long V-shaped block is provided with a groove, so that the long V-shaped block is better attached to the tibia, and the position between the distraction repositor and the tibia is kept stable.
Example 3
In this embodiment, the spreading distance of the spreading and restoring device and the forward and backward movement of the tibia guiding arm are both transmitted by meshing the gear and the rack, as shown in fig. 7, the racks are arranged on the surfaces of two ends of the traction rod, standard gears are arranged in the sleeves of the two guiding arms, the gear in the connecting sleeve 3 of the talus guiding arm is meshed with the rack at the lower end of the traction rod 1, the talus guiding arm 2 is driven to move up and down relative to the traction rod, so that the spreading distance of the spreading and restoring device is adjusted, the basic functions of spreading and restoring the talus and tibia of the spreading and restoring device are realized, and an operation space is provided for bone setting operation.
In this embodiment, the rear end of the tibia guiding arm 4 also uses rack and pinion meshing transmission, the tibia guiding arm 4 is connected at the rack at the upper end of the traction rod 1, under the condition that the tibia and the talus are not in the same line before operation, the gear handle 12 above the tibia guiding arm connecting sleeve 5 is rotated, the gear and the rack meshing transmission motion to the tibia guiding arm, the tibia guiding arm moves back and forth along the small range of the traction rod, the tibia and the talus are adjusted to the same line, a good linear relation is maintained, the operation difficulty is reduced, and the burden of a patient is relieved.
Example 4
In the embodiment, the traction rod, the guide arm and the gear are made of carbon steel and other materials with larger bearing capacity, so that good hardness is maintained, the phenomenon that the distraction effect is poor due to deformation of the distraction reduction device caused by the force given by two bones after distraction is avoided, meanwhile, the tibia locating clamp can also be made of carbon steel, the movement of the tibia is strictly limited, and the operation difficulty is reduced; the elastic clamping piece part of the talus locating clamp is made of beryllium copper alloy, the beryllium copper alloy has good elasticity, the concave part of the elastic clamping piece is well attached to the talus, the movement of the talus is limited, the talus is firmly connected to the distraction repositor, the good linear relation between the tibia and the talus is maintained, secondary fixation is avoided, the operation difficulty is reduced, and the pain of a patient is relieved.
In summary, the traction rod is made of materials with carbon steel and other hardness meeting requirements, the traction rod is arranged closer to a fracture part, the moment applied by the tibia and the talus to the traction rod after the tibia and the talus are spread is reduced, the bending deformation of the traction rod is reduced, the traction rod maintains good straightness, and the spread talus and an ankle hole maintain good space anatomy resetting relation; the two guide arms are connected to the traction rod by using a gear rack in a meshed manner, the gear rack is meshed and driven stably, a gear handle on the talus guide arm is rotated, and the opening distance of the opener is adjusted according to actual needs; the tibia guiding arm is also connected to the traction rod by adopting gear-rack meshing, so that the tibia guiding arm can be finely adjusted back and forth along the traction rod, and a gear handle on the tibia guiding arm is finely adjusted under the condition that the tibia and the talus are not on the same straight line (the front-back direction is a non-linear surface), so as to adjust the linear relation between the tibia and the talus; the tibia locating clamp is designed into a long V-shaped block structure, the effective contact area between the V-shaped block and tibia is large, and the tibia locating clamp is matched with a Kirschner wire to completely limit the degree of freedom of the tibia, so that the tibia and the distraction restorer are relatively static; the elastic clamping piece is designed on the talus locating clamp and is attached to concave surfaces on two sides of the talus, and three Kirschner wires are matched to firmly connect the talus to the expansion restorer to limit the self-inclination and rotation of the talus, so that the problem that no good space for dissecting and restoring the talus exists in the current clinical operation is solved, the operation difficulty is reduced, the operation time is saved, and the pain of a patient is relieved.
Claims (6)
1. The utility model provides a pilot fracture talus struts restorer, includes traction lever (1), talus guide arm (2), shin guide arm (4), its characterized in that: the traction rod (1) is L-shaped, the tibia guide arm (4) is movably arranged at the tail end of a transverse arm of the traction rod (1), and the talus guide arm (2) is movably connected at the lower end of a longitudinal arm of the traction rod (1) and can slide relatively along the longitudinal arm; the tibia guide arm (4) is positioned in a sliding way along the transverse arm and is in a space position with the talus guide arm (2); the front ends of the talus guide arm (2) and the tibia guide arm (4) are respectively clamped and fixed with the talus and the tibia.
2. A pilot fracture talar distraction reducer according to claim 1, characterized in that: the utility model discloses a traction lever, including traction lever (1), gear (11), gear shaft (16), gear (11) fixed mounting is on gear shaft (16), gear (11) and rack (13) cooperation transmission are with talus guide arm (2) swing joint to traction lever (1) lower extreme, rack (13) are all laid to traction lever (1) both ends internal surface, talus guide arm adapter sleeve (3) are designed to talus guide arm (2) one end, offer gear shaft hole (15) in talus guide arm adapter sleeve (3), install gear shaft (15).
3. A pilot fracture talar distraction reducer according to claim 2, characterized in that: the other end of the talar guide arm (2) is provided with a talar locating clamp (8), the talar locating clamp (8) is designed into an inward convex structure with reference to a talar anatomical structure, the upper surface of the talar locating clamp (8) is provided with three Kirschner wire holes (14), the three Kirschner wire holes (14) are distributed in a triangular shape, and the Kirschner wire (10) is penetrated into the talar through the Kirschner wire holes (14) respectively.
4. A pilot fracture talar distraction reducer according to claim 1, characterized in that: tibia guiding arm (4) one end design has tibia guiding arm adapter sleeve (5), and gear shaft hole (15) are seted up to tibia guiding arm adapter sleeve (5), install gear shaft (16) in gear shaft hole (15), gear (11) fixed mounting is on gear shaft (16), gear (11) and rack (13) cooperation transmission are with tibia guiding arm (4) swing joint in traction lever (1) upper end.
5. A pilot fracture talar distraction reducer according to claim 4, characterized in that: the tibia locating clamp (6) is designed at the other end of the tibia guiding arm (4), the tibia locating clamp (6) is designed to be of a long V-shaped block structure to limit the tibia displacement with reference to the talus anatomy structure, a Kirschner wire hole (14) is formed in the center of the upper surface of the tibia locating clamp (6), and a Kirschner wire (10) penetrates through the Kirschner wire hole (14) to penetrate into the tibia.
6. A pilot fracture talar distraction reducer according to claim 2 or 4, characterized in that: the utility model discloses a tibia guiding arm, including shank guiding arm, gear (11) swing joint, shank guiding arm (4) and shank guiding arm (4) are all installed standard gear (11) in shank guiding arm adapter sleeve (3) with shank guiding arm adapter sleeve (5), rack (13) are arranged respectively to both ends surface about drawbar (1), shank guiding arm (2) utilize gear (11) swing joint at drawbar (1) lower extreme, shank guiding arm (4) utilize gear (11) swing joint to be in drawbar (1) upper end, and both guiding arms can be relative drawbar (1) removal, shank guiding arm (2) reciprocate along drawbar (1), change the distance between shank guiding arm (2) and shank guiding arm (4), shank guiding arm (4) are along following about drawbar (1) and are adjusted shank guiding arm (2) and shank guiding arm (4) straightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310845203.XA CN116725593A (en) | 2023-07-11 | 2023-07-11 | Talus distraction reduction device for pilot fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310845203.XA CN116725593A (en) | 2023-07-11 | 2023-07-11 | Talus distraction reduction device for pilot fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116725593A true CN116725593A (en) | 2023-09-12 |
Family
ID=87902735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310845203.XA Withdrawn CN116725593A (en) | 2023-07-11 | 2023-07-11 | Talus distraction reduction device for pilot fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116725593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117084732A (en) * | 2023-10-19 | 2023-11-21 | 广州医科大学附属第五医院(广州再生医学与健康广东省实验室附属医院) | Talus rear pulley focus shows serial instruments |
-
2023
- 2023-07-11 CN CN202310845203.XA patent/CN116725593A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117084732A (en) * | 2023-10-19 | 2023-11-21 | 广州医科大学附属第五医院(广州再生医学与健康广东省实验室附属医院) | Talus rear pulley focus shows serial instruments |
| CN117084732B (en) * | 2023-10-19 | 2024-01-09 | 广州医科大学附属第五医院(广州再生医学与健康广东省实验室附属医院) | Talus rear pulley focus shows serial instruments |
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Application publication date: 20230912 |