CN111012467A - Automatic traction device for tibia fracture coaptation operation - Google Patents
Automatic traction device for tibia fracture coaptation operation Download PDFInfo
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- CN111012467A CN111012467A CN201911417598.3A CN201911417598A CN111012467A CN 111012467 A CN111012467 A CN 111012467A CN 201911417598 A CN201911417598 A CN 201911417598A CN 111012467 A CN111012467 A CN 111012467A
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8869—Tensioning devices
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B17/921—Impactors or extractors, e.g. for removing intramedullary devices for intramedullary devices
Abstract
The invention discloses an automatic traction device for a tibia fracture setting operation, wherein a support frame of the automatic traction device is of a triangular structure and is used for supporting the lower limbs of a patient to enable the lower limbs to be formed and to keep a leg bending state. Its shin bone kirschner wire installation position has two shin bone kirschner wire mounting structure of arranging in shank bearing surface both sides separately, and this automatic traction device operation is stable, can reduce the operation degree of difficulty, improves disconnected bone and pulls the quality of restoreing.
Description
Technical Field
The invention relates to the technical field of orthopedic medical instruments, in particular to an automatic traction device for a tibial fracture bone setting operation, which is suitable for bone setting operations of tibial intramedullary nail implantation and percutaneous bone plate implantation.
Background
The tibia fracture is a common clinical fracture, and due to strong muscle strength of legs, the tibia of a patient is often shortened and deformed under the traction of muscles after being fractured, and the reduction, the length recovery and the effective maintenance in the operation are difficult. 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 a bone fracture plate is a common treatment method for tibial fracture, and intraoperative traction is an important means for reducing tibial fracture and recovering the length of lower limbs. At present, two assistants are generally needed to help to pull 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 restore the tibia, however, the method cannot stably maintain fracture restoration and lower limb length, the restoration effect is not ideal, and the treatment effect is affected; 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 reset the fractured tibia, but the existing traction devices straighten the lower limbs, the intramedullary nails are implanted from the proximal ends of the tibia, and the patient can only perform the operation by keeping the leg bending posture.
In the lower limb traction device for intramedullary nail surgery disclosed in chinese patent application CN201910832613.4, although the patient can be operated while keeping the leg bending posture, there are at least the following disadvantages:
1. the device is low in stability, the overall height of the device is adjusted by the aid of four jacking bolts at the bottom under the condition that the leg bending angle is kept unchanged, the four jacking bolts are difficult to adjust synchronously, and the overall inclination of the device is easy to cause;
2. the whole device is supported and prevented from being placed on the operating table only by four jacking bolts, the device is unstable due to certain deformability of the surface of the operating table, and the device is inclined due to shaking or sinking of the jacking bolts in the operation process, so that the accuracy of traction and resetting is influenced, and the smooth operation of the operation is further influenced;
3. the traction bow at the tibia is arranged at one end of the device in the length direction, so that the traction bow occupies space and influences operation;
4. all the adjustments of the limb traction device in the operation are manual adjustments, thereby increasing the operation difficulty of an operator and prolonging the operation time;
5. in the limb traction device, because the screw rod is rotationally connected with the back of the traction bow, the difference between the two ends of the Kirschner wire and the shank supporting plate or the thigh supporting plate cannot be adjusted, namely the internal rotation or the outward turning angle of the broken bone cannot be corrected, the restoration of the broken bone in any direction cannot be realized, and a dead zone exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic traction device for the tibia fracture setting operation, which has stable operation, reduces the operation difficulty and improves the fracture traction reduction quality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an automatic traction device for a tibial fracture osteosynthesis procedure, comprising:
the support frame is in a triangular structure and is used for supporting the lower limbs of a patient to enable the lower limbs of the patient to form and keep a leg bending state, the support frame comprises a horizontally arranged support bottom surface, a thigh bearing surface and a shank bearing surface, the thigh bearing surface and the shank bearing surface are arranged at two ends of the support bottom surface in a back-to-back mode, the end parts of two adjacent surfaces are hinged, and the length of each surface can be adjusted and locked by virtue of an edge adjusting mechanism;
the tibia kirschner wire mounting position is provided with two tibia kirschner wire mounting structures which are respectively arranged at two sides of a lower leg bearing surface and used for fixing two ends of a first kirschner wire which penetrates through a calcaneus or a tibia far end of a patient, and a first traction bow is further pulled on the first kirschner wire.
The technical scheme is that the shank support surface comprises two first support rods which are respectively arranged at two sides of the shank support surface and arranged along the length direction of the shank support surface, a support plate for supporting the far end of the tibia is arranged between the two first support rods, and the edge adjusting mechanism enables the two first support rods to synchronously extend and retract through an automatic or manual driving structure so as to realize the length adjustment of the shank support surface; the thigh bearing surface comprises two second support rods which are respectively arranged at two sides of the thigh bearing surface and arranged along the length direction of the thigh bearing surface, and the edge adjusting mechanism enables the two second support rods to synchronously stretch and retract through an automatic or manual driving structure so as to realize the length adjustment of the thigh bearing surface; the supporting beam is positioned at the intersection of the thigh bearing surface and the shank bearing surface.
The further technical scheme is that the method further comprises the following steps: and the first lifting mechanism is used for driving the tibial Kirschner wire mounting structure to move up and down along the calf bearing surface and lock.
A further technical solution is that the first lifting mechanism comprises: two first lift portions are arranged on each first bracing piece in part to pass through universal ball joint with the shin bone kirschner wire mounting structure who corresponds and be connected, two first lift portions can drive alone, make the shin bone kirschner wire mounting structure who corresponds the side along first bracing piece motion and locking, two first lift portions can also drive simultaneously.
A further technical solution is that each of the first elevating portions includes: the first sliding block is rotatably connected with the corresponding tibia Kirschner wire mounting structure in a plane parallel to the calf bearing surface by virtue of a universal ball joint; and the first driving part drives the first sliding block to move along the direction of the first supporting rod.
A further technical scheme lies in, first drive division adopts screw nut drive or telescopic link drive, includes: the first driving screw is rotatably connected to the lower end of the first supporting rod; the first motor is connected to the lower end of the first driving screw rod and hinged to the bottom surface of the support, and the first sliding block is connected to the first driving screw rod in a threaded mode; or
The first electric push rod is arranged in parallel with the first supporting rod and is fixed with the lower leg bearing surface, and the telescopic end of the first electric push rod is fixed with the first sliding block; the first sliding block is sleeved on the corresponding first supporting rod in a sliding mode.
The further technical scheme is that the method further comprises the following steps: and the first distance adjusting mechanism is used for driving the tibial Kirschner wire mounting structure to move close to or far away from the lower leg bearing surface.
A further technical solution is that the first distance adjustment mechanism comprises: two first roll adjustment portions are perpendicular to shank bearing surface and are arranged between two first sliding blocks and the universal ball joint, the two first roll adjustment portions can be driven independently, the tibial Kirschner wire mounting structure on the corresponding side is close to or far away from the shank bearing surface to move and lock, and the two first roll adjustment portions can also be driven simultaneously.
The further technical scheme is that the method further comprises the following steps: a tibial bone fracture reduction mechanism comprising: the first jacking assembly is arranged at the longitudinal center line position of the lower leg bearing surface; the at least two first lateral pressing assemblies are respectively arranged on two sides of the lower leg bearing surface; and one end of the constraint belt is fixed with one first supporting rod, the other end of the constraint belt is detachably fixed with the other first supporting rod, or is folded around the other first supporting rod and then detachably fixed with the original first supporting rod, and the length of the constraint belt around the lower leg of the patient is adjustable.
A further technical solution is that the first jacking assembly comprises: the shank fixing plate is provided with an inward sunken radian, and two ends of the shank fixing plate are connected with the corresponding first supporting rods; and the third electric push rod is fixed in the middle of the shank fixing plate, the telescopic end of the third electric push rod protrudes out of the shank fixing plate, and a top pressure plate is fixed on the third electric push rod.
A further technical solution lies in that the first jacking assembly further comprises: and the second driving part is used for driving the shank fixing plate to slide along the first supporting rod and lock.
A further technical solution is that the first side press assembly comprises: the two first sliding seats are respectively arranged on the two first supporting rods and are connected with the first supporting rods in a sliding manner; the first passive telescopic part is arranged along the transverse direction of the shank bearing surface, is fixed on a first sliding seat and comprises a rod body and a pipe body which is in sliding sleeve joint with the rod body; the first active telescopic part is arranged along the transverse direction of the lower leg bearing surface and is fixed on the other first sliding seat, and the telescopic end of the first active telescopic part faces the first passive telescopic part; the first linkage plate is provided with an inward sunken radian, two ends of the first linkage plate are turned outwards to form a connecting part, and the movable end of the first passive telescopic part and the telescopic end of the first active telescopic part both penetrate through the connecting part and are fixed with the connecting part; and side pressure plates are fixed at the opposite ends of the first passive telescopic part and the first active telescopic part.
A further technical scheme lies in, first initiative pars contractilis adopts screw nut drive or telescopic link drive, includes:
the second driving screw is arranged along the transverse direction of the lower leg bearing surface, and the outer end of the second driving screw is connected with a second motor fixed with the other first sliding seat; the first long sleeve is in threaded connection with the other end of the second driving screw and penetrates through the corresponding connecting part to be fixed with the second driving screw; or
And the fourth electric push rod is arranged along the transverse direction of the lower leg bearing surface and is fixed on the other first sliding seat, and the telescopic end of the fourth electric push rod penetrates through the corresponding connecting part to be fixed with the corresponding connecting part.
According to another disclosed aspect, the traction device can also be used for bone-knitting operations of femoral intramedullary nail implantation and percutaneous bone plate implantation.
The technical scheme includes that the femoral traction device further comprises two femoral Kirschner wire installation positions which are arranged in parallel at intervals, each femoral Kirschner wire installation position is provided with two femoral Kirschner wire installation structures which are respectively arranged on two sides of the thigh bearing surface, each femoral Kirschner wire installation position is used for fixing two ends of a second Kirschner wire which penetrates through the distal end of the femur of a patient, and a second traction bow is drawn on the two second Kirschner wires.
A further technical solution is that the first side pressing assembly further comprises: and the third driving part is used for driving the first linkage plate to slide and lock along the first supporting rod.
The further technical scheme is that the method further comprises the following steps: and the second lifting mechanism is used for driving the two bone Kirschner wire mounting positions to synchronously move up and down along the thigh bearing surface and lock.
A further technical solution is that the second lifting mechanism comprises: two second lift portions are arranged on each second bracing piece and are connected with the corresponding femoral Kirschner wire mounting structure through universal ball joints, the two second lift portions can be driven independently, so that the two strands of bone Kirschner wire mounting structures on the corresponding sides can move and be locked along the second bracing pieces synchronously, and the two second lift portions can also be driven simultaneously.
A further technical solution is that each second lifting portion comprises: the lifting arm is arranged in parallel with the second supporting rod and is positioned at the upper end of the second supporting rod; the fourth driving part is used for driving the lifting arm to move up and down along the second supporting rod and lock; the connecting arm is arranged at an included angle with the lifting arm and is connected with the upper end of the lifting arm; the mounting sleeve is sleeved on the connecting arm; two thighbone kirschner wire installation position sets up along linking arm length direction, and thighbone kirschner wire mounting structure is put in with the help of universal ball joint connection in the installation.
A further technical scheme lies in, fourth drive division adopts screw nut drive or telescopic link drive, includes: the third driving screw is arranged in parallel with the lifting arm, and the lower end of the third driving screw is connected with a third motor fixed with the second supporting rod; the second sliding block is fixed with the lifting arm and is in threaded connection with the third driving screw rod; or
And the sixth electric push rod is arranged in parallel with the lifting arm and is fixed with the second support rod, and the telescopic end of the sixth electric push rod is fixed with the lifting arm.
The further technical scheme is that the method further comprises the following steps: and the second distance adjusting mechanism is used for driving the femoral Kirschner wire mounting structure to move close to or far away from the thigh bearing surface along the connecting arm.
A further technical solution is that the second distance adjustment mechanism comprises: two automatic pars contractilis, each automatic pars contractilis along the linking arm direction setting and fixed with a linking arm, two automatic pars contractilis can the individual drive to make the installation cover slide along the linking arm that corresponds the side, two automatic pars contractilis can also drive simultaneously.
The further technical scheme is that the method further comprises the following steps: the mechanism for adjusting the angulation before and after the fracture of the femur realizes the correction of the angulation deformity before and after the fracture of the femur by adjusting an included angle formed between the connecting arm and the lifting arm.
The further technical proposal is that the mechanism for adjusting the angulation of the fractured femur anteroposterior comprises: and the two fifth driving parts are respectively arranged at the free ends of the two connecting arms and are used for driving the connecting arms to rotate along the hinged parts of the connecting arms and the lifting arms.
A further technical scheme is that each fifth driving part adopts screw nut drive or telescopic link drive, and comprises: the fourth driving screw, the connecting arm and the lifting arm form a triangle, and the lower end of the fourth driving screw is connected with a fourth motor hinged with the thigh bearing surface; the upper end of the second long sleeve is hinged with the free end of the connecting arm; or
And the eighth electric push rod, the connecting arm and the lifting arm form a triangle, the lower end of the eighth electric push rod is hinged with the leg bearing surface, and the upper end of the eighth electric push rod is hinged with the free end of the connecting arm.
The further technical scheme is that the method further comprises the following steps: a femoral fracture reduction mechanism comprising: the second jacking assembly is arranged at the longitudinal center line position of the thigh bearing surface; and the at least two second side pressing components are respectively arranged at two sides of the thigh bearing surface.
A further technical solution is that the second jacking assembly comprises: the thigh fixing plate is provided with an inward sunken radian, and two ends of the thigh fixing plate are in sliding connection with the corresponding second supporting rods; and the ninth electric push rod is fixed in the middle of the thigh fixing plate, the telescopic end of the ninth electric push rod protrudes out of the thigh fixing plate, and the jacking plate is fixed on the ninth electric push rod.
A further technical solution lies in that the second jacking assembly further comprises: and the sixth driving part is used for driving the thigh fixing plate to slide along the second supporting rod and lock.
A further technical solution is that the second side press assembly comprises: the two second sliding seats are respectively arranged on the two second supporting rods and are in sliding connection with the second supporting rods; the second passive telescopic part is arranged along the transverse direction of the thigh bearing surface, is fixed on a second sliding seat and comprises a rod body and a pipe body in sliding sleeve joint with the rod body; the second active telescopic part is arranged along the transverse direction of the thigh bearing surface and is fixed on the other second sliding seat, and the telescopic end of the second active telescopic part faces the second passive telescopic part; the second linkage plate is provided with an inward sunken radian, two ends of the second linkage plate are turned outwards to form a connecting part, and the movable end of the second passive telescopic part and the telescopic end of the second movable telescopic part both penetrate through the connecting part and are fixed with the connecting part; and side pressure plates are fixed at the opposite ends of the second passive telescopic part and the second active telescopic part.
A further technical scheme lies in, the second initiative pars contractilis adopts screw nut drive or telescopic link drive, includes: a fourth driving screw rod arranged along the transverse direction of the thigh bearing surface, and the outer end of the fourth driving screw rod is connected with a fifth motor fixed with the other second sliding seat; the third long sleeve is in threaded connection with the other end of the fourth driving screw and penetrates through the corresponding connecting part to be fixed with the fourth driving screw; or
And the eleventh electric push rod is arranged along the transverse direction of the thigh bearing surface and is fixed on the other second sliding seat, and the telescopic end of the eleventh electric push rod penetrates through the corresponding connecting part to be fixed with the corresponding connecting part.
A further technical solution is that the second side press assembly further comprises: and the seventh driving part is used for driving the second sliding seat to slide along the second supporting rod and lock.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the device can ensure that the femur or the tibia can stably keep the reset state required by implanting the intramedullary nail;
the lengths and included angles of the three main surfaces of the support frame are adjustable, so that the shape of the support frame can be adjusted according to the body shape of a patient, and the use requirements of different patients are met;
the tibia Kirschner wire mounting position and the femur Kirschner wire mounting position are arranged, and do not protrude out of the support frame in the length direction, so that the operating space is not occupied;
and when the Kirschner wire nail is pulled to reduce the fracture and recover the length of the lower limb, the pulling can be realized by adjusting the length of the corresponding surface on the support frame without external force, so that the operation quality and the operation efficiency are improved, and the Kirschner wire nail pulling device is suitable for popularization and application in various medical institutions.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic axial side view of the present invention (femoral fracture reduction mechanism not shown, which is identical in construction to tibial fracture reduction mechanism);
FIG. 2 is a schematic side view of the structure of FIG. 1;
fig. 3 is a schematic view of an installation structure of the first distance adjusting part in 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art 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 to 3, an embodiment of the automatic traction device for the tibia fracture osteosynthesis surgery of the present disclosure includes a support frame, a tibia kirschner wire installation site and two-bone kirschner wire installation sites.
The support frame can be made of carbon fiber materials so as to avoid influencing the perspective effect in the operation. The supporting frame is a triangle structure and comprises a supporting bottom surface 100 which is horizontally arranged, and a thigh bearing surface 200 and a shank bearing surface 300 which are arranged at the two ends of the supporting bottom surface 100 in a back-to-back manner. The end parts of the two adjacent surfaces are hinged, and the length of each surface is adjustable and can be locked by virtue of an edge adjusting mechanism. The tibia kirschner wire mounting position is provided with two tibia kirschner wire mounting structures 10 which are respectively arranged at two sides of the calf bearing surface 300 and are used for being fixed with two ends of a first kirschner wire which penetrates through the calcaneus or the far end of the tibia of a patient, and a first traction bow 001 is further pulled on the first kirschner wire.
Two thighbone kirschner wire installation positions are parallel and the interval sets up, and each thighbone kirschner wire installation position has two thighbone kirschner wire mounting structure 20 of arranging in thigh bearing surface 200 both sides separately, and each thighbone kirschner wire installation position is used for and passes the both ends of a second kirschner wire of patient's thighbone distal end fixed, and the tractive has second traction bow 002 on two second kirschner wires.
During operation, the device is placed on an operating table and below the lower limbs of a patient, the upper body of the patient lies flat, the lower limbs to be operated are bent, the thighs are lapped on the thigh bearing surface 200, and the calves are lapped on the calves bearing surface 300, so that the purposes of supporting the lower limbs of the patient to form and keeping the leg bending state are achieved, and operation of a doctor is facilitated. In order to adapt to the posture difference of different patients, the support frame also has an adjusting function, and particularly, the height of the support frame and the lengths of the thigh bearing surface 200 and the shank bearing surface 300 can be changed by adjusting the length of each surface and the size of an included angle, so that the thigh of the patient can lean against the thigh bearing surface 200, and the shank can lean against the shank bearing surface 300.
When the device is used for calcaneus or tibia far-end broken bone fracture surgery, taking an intramedullary nail implantation operation as an example, the traction method comprises the following steps:
1. driving a first Kirschner wire into a proper position in a perspective environment;
2. applying appropriate transverse traction force to two ends of the first Kirschner wire by using the first traction bow 001 so as to keep the first Kirschner wire in a linear stretching state;
3. fixing two ends of the first Kirschner wire on the tibial Kirschner wire mounting positions;
4. adjusting the support frame to enable the shank bearing surface 300 to extend downwards so as to drive the installation position of the tibia kirschner wire to move downwards, and thus, applying downward traction force to the first kirschner wire to reduce the fracture of a fractured bone;
5. performing intramedullary nail implantation operation.
When the device is used for carrying out a distal femur broken bone fracture setting operation, taking an implanted intramedullary nail as an example, the traction method comprises the following steps:
1. under the perspective environment, a second Kirschner wire is respectively driven into the front side and the rear side of the distal end of the femur;
2. applying appropriate transverse traction force to two ends of the second Kirschner wire by using a second traction bow 002 so as to keep the second Kirschner wire in a linear stretching state;
3. fixing two ends of the second Kirschner wire on the femoral Kirschner wire mounting positions;
4. adjusting the support frame to enable the thigh bearing surface 200 to extend upwards so as to drive the installation position of the femoral Kirschner wire to move upwards, and thus, applying upward traction force to the second Kirschner wire to reduce the fracture of the fractured bone;
5. performing intramedullary nail implantation operation.
Wherein, the traction bow is the existing product, and the traction bow does not have connection structure with the support frame, can select to use according to the operation demand.
The device can ensure that the femur or the tibia can stably keep the reset state required by implanting the intramedullary nail; the lengths of the three main surfaces of the support frame and the included angles are adjustable, so that the shape of the support frame can be adjusted according to the body shapes of patients, and the use requirements of different patients are met; the installation positions of the tibia Kirschner wire and the femur Kirschner wire do not protrude out of the support frame in the length direction, so that the operation space is not occupied; and when the Kirschner wire nail is pulled to reduce the fracture and recover the length of the lower limb, the pulling can be realized by adjusting the length of the corresponding surface on the support frame without external force, so that the operation quality and the operation efficiency are improved, and the Kirschner wire nail pulling device is suitable for popularization and application in various medical institutions.
According to one embodiment of the present disclosure, the lower leg bearing surface 300 and the upper leg bearing surface 200 are further optimized to be frame-type structures, and the middle portions of the lower leg bearing surfaces are hollow, so that perspective during operation is facilitated, and compression on lower limbs after fixation is reduced.
Specifically, the lower leg bearing surface 300 comprises two first support rods 301 which are respectively arranged at two sides of the lower leg bearing surface 300 and arranged along the length direction of the lower leg bearing surface 300, a support plate 302 for supporting the far end of the tibia is arranged between the two first support rods 301, and the edge adjusting mechanism enables the two first support rods 301 to synchronously extend and retract through an automatic or manual driving structure so as to realize the length adjustment of the lower leg bearing surface 300; the thigh bearing surface 200 comprises two second supporting rods 201 which are respectively arranged at two sides of the thigh bearing surface 200 and arranged along the length direction of the thigh bearing surface 200, and the edge adjusting mechanism enables the two second supporting rods 201 to synchronously stretch and retract through an automatic or manual driving structure so as to realize the length adjustment of the thigh bearing surface 200. Also included is a support beam 202 located at the intersection of thigh receiving surface 200 and calf receiving surface 300.
The lower limbs of the patient are bent and lapped on the supporting cross beam 202, the far ends of the lower limbs are supported by the supporting plates 302, and the supporting plates 302 have radians matched with the limbs so as to ensure the stability of the leg bending state of the patient and ensure the operation quality.
According to an embodiment of the present disclosure, the support bottom surface 100 includes two third support bars 301, which are disposed along the length direction of the support bottom surface 100 and are located on two sides of the support bottom surface 100 in parallel.
The adjustment of the length of each surface in the support frame can be realized by stretching two corresponding support rods of each surface, specifically, the edge adjusting mechanism on each surface is arranged on the two corresponding support rods and can be realized by modes such as electric push rod, screw nut drive, air cylinder, oil cylinder automatic drive or telescopic ratchet wheel manual drive.
According to an embodiment of the present disclosure, a first lifting mechanism is further included for driving the tibial k-wire mounting structure 10 up and down along the lower leg bearing surface 300 and locking.
According to an embodiment of the present disclosure, two first lifting portions 30 are disposed on each first supporting rod 301, and connected to the corresponding tibial kirschner wire mounting structure 10 through the universal ball joint 003, the two first lifting portions 30 can be driven independently, so that the corresponding tibial kirschner wire mounting structure 10 moves along the first supporting rod 301 and is locked, and the two first lifting portions 30 can also be driven simultaneously.
When the tibial kirschner wire mounting structure 10 is fixed to the first kirschner wire, since the insertion angle of the first kirschner wire is different and the first kirschner wire is not necessarily driven in along the lateral direction of the lower leg bearing surface 300, when the two tibial kirschner wire mounting structures 10 are fixed to the end portions of the corresponding first kirschner wires, the two first elevating portions 30 can be driven individually so that the two tibial kirschner wire mounting structures 10 are fixed to the two ends of the first kirschner wires.
After the tibia kirschner wire mounting structure 10 is fixed with the first kirschner wire, when a tibia broken bone has a lateral angulation deformity, the two first lifting parts 30 can be driven independently to adjust the relative heights of the two ends of the first kirschner wire, so that the lateral displacement of the tibia far-end broken bone is corrected, and the displaced broken bone is reset.
When the length of the lower limb is recovered, the two first lifting parts 30 can be driven simultaneously to pull the first kirschner wire to the far end of the tibia, so that the fracture of the fractured bone is reduced, and the length of the lower limb is recovered.
According to an embodiment of the present disclosure, each of the first lifting portions 30 includes a first slider 31 rotatably connected to the corresponding tibial kirschner wire mounting structure 10 via a universal ball joint 003 in a plane parallel to the lower leg receiving surface 300; and a first driving part for driving the first slider 31 to move along the direction of the first supporting rod 301.
According to an embodiment of the present disclosure, the first driving portion is driven by a lead screw nut, and includes a first driving screw rotatably connected to the lower end of the first supporting rod 301 through a bearing; and a first motor connected to the lower end of the first driving screw and hinged to the support bottom surface 100, wherein the first slider 31 is connected to the first driving screw in a threaded manner, and the first slider 31 is moved up and down along the direction of the first support rod 301 by the forward rotation or reverse rotation of the first motor.
According to an embodiment of the present disclosure, the first driving portion is driven by a telescopic rod, and includes a first electric push rod, which is disposed parallel to the first supporting rod 301 and fixed to the lower leg supporting surface 300, and a telescopic end of the first electric push rod is fixed to the first sliding block 31; the first sliding block 31 is slidably sleeved on the corresponding first supporting rod 301.
According to an embodiment of the present disclosure, a first distance adjustment mechanism is further included for driving the tibial k-wire mounting structure 10 towards or away from the lower leg bearing surface 300.
According to an embodiment of the present disclosure, the first distance adjusting mechanism includes two first distance adjusting portions 40, and the two first distance adjusting portions 40 are perpendicular to the lower leg bearing surface 300 and are respectively disposed between the two first sliding blocks 31 and the universal ball joint 003, and the two first distance adjusting portions 40 can be driven independently, so that the tibial kirschner wire mounting structure 10 on the corresponding side is close to or far from the lower leg bearing surface 300 to move and lock, and the two first distance adjusting portions 40 can also be driven simultaneously. The first distance adjusting part 40 may employ an electric push rod.
When shin bone kirschner wire mounting structure 10 is fixed with first kirschner wire, because first kirschner wire is squeezed into the position and is kept apart from the distance of shank bearing surface 300 according to the patient condition diverse, first roll adjustment portion 40 can drive alone, makes two shin bone kirschner wire mounting structure 10 correspond to the both ends of first kirschner wire and fixed.
After the tibia kirschner wire mounting structure 10 is fixed with the first kirschner wire, when the tibia broken bone has internal rotation or outward turning displacement, the two first distance adjusting parts 40 are driven independently to adjust the distance of the two ends of the first kirschner wire relatively protruding out of the calf bearing surface 300, so that the internal rotation or outward turning angle of the tibia broken bone is corrected.
According to an embodiment of the present disclosure, the tibia fracture reduction mechanism further comprises at least one first jacking component, which is arranged on a longitudinal centerline of the lower leg bearing surface 300; at least two first side pressing assemblies respectively arranged at two sides of the lower leg bearing surface 300; and one end of the binding belt is fixed with one first supporting rod 301, the other end of the binding belt is detachably fixed with the other first supporting rod 301, or the binding belt is folded around the other first supporting rod 301 and then detachably fixed with the original first supporting rod 301, and the length of the binding belt around the lower leg of the patient is adjustable.
The binding belt fixes the lower leg of the patient so as to ensure the stability of the operation.
According to an embodiment of the present disclosure, the first jacking assembly includes a lower leg fixing plate 51 having an inward concave arc, and two ends of the lower leg fixing plate 51 are connected to the corresponding first supporting rods 301; and a third electric push rod 52 fixed in the middle of the lower leg fixing plate 51, with its telescopic end protruding out of the lower leg fixing plate 51 and fixed with a top pressure plate to ensure the top pressure area without damaging the skin tissue, the top pressure plate is preferably a hemisphere surface protruding to the limb side.
When the first jacking component is used for correcting the displacement of the broken tibia, the third electric push rod 52 is controlled to extend, so that one end of the tibia is squeezed outwards to correct the forward angulation of the broken tibia.
According to an embodiment of the present disclosure, the first jacking assembly further includes a second driving portion 53 for driving the lower leg fixing plate 51 to slide along the first supporting rod 301 and lock. The jacking position of the first jacking assembly is adjusted to meet the operation requirements of different patients.
Specifically, the second driving portion 53 includes an electric push rod, and is disposed along the direction of the first supporting rod 301 and fixed to the lower leg supporting surface 300, and the telescopic end of the electric push rod is fixed to the lower leg fixing plate 51, and the two ends of the lower leg fixing plate 51 are slidably connected to the first supporting rod 301, so that the electric push rod extends or contracts to drive the lower leg fixing plate 51 to drive the third electric push rod 52 to move up and down along the direction of the first supporting rod 301.
According to an embodiment of the present disclosure, the first lateral pressing assembly includes two first sliding seats 54, a first passive telescopic portion 55, a first active telescopic portion 56, and a first linkage plate 57. Wherein, the shank fixing plate 51 and the first linkage plate 57 can be the same plate body.
The two first sliding seats 54 are respectively disposed on the two first supporting rods 301, and are slidably connected with the first supporting rods 301. The first passive telescopic part 55 is disposed along the horizontal direction of the lower leg supporting surface 300, and is fixed on a first sliding seat 54, and includes a rod body and a tube body slidably sleeved with the rod body. The first active stretching part 56 is disposed along the lateral direction of the lower leg supporting surface 300 and fixed to the other first slide 54 with its stretching end facing the first passive stretching part 55. The first linkage plate 57 has an inward concave arc, two ends of the first linkage plate are turned outwards to form a connecting part, and the movable end of the first passive telescopic part 55 and the telescopic end of the first active telescopic part 56 both penetrate through the connecting part and are fixed with the connecting part; and side pressure plates are fixed at the opposite ends of the first passive expansion part and the first active expansion part so as to increase the side pressure area and not damage the skin tissue, and the side pressure plates are preferably hemispherical surfaces protruding towards the limb side.
When the first top side pressing component is used for correcting the broken tibia bone displacement, the first active telescopic part 56 extends, the first linkage plate 57 moves towards the first passive telescopic part 55, and the first passive telescopic part 55 is pushed to contract, so that the first active telescopic part 56 presses one side of the proximal end of the tibia of the patient, and the other side of the proximal end of the tibia of the patient is not stressed; the first active stretching part 56 is contracted, and the first linkage plate 57 moves towards the first active stretching part 56, so that the first passive stretching part 55 is pulled to stretch, and the first passive stretching part 55 presses the other side of the proximal end of the tibia of the patient. Through the use of first top side pressure subassembly, can correct the lateral displacement of the shin bone fractured bone.
According to an embodiment of the present disclosure, the first active telescopic part 56 is driven by a lead screw nut, and includes a second driving screw rod, which is disposed along the transverse direction of the lower leg supporting surface 300, and the outer end of the second driving screw rod is connected to a second motor fixed to another first sliding seat 54; and the first long sleeve is in threaded connection with the other end of the second driving screw rod and penetrates through the corresponding connecting part to be fixed with the second driving screw rod. The first long sleeve is driven to reciprocate by forward rotation or reverse rotation of the second motor, and the first active telescopic part 56 is extended or shortened.
According to an embodiment of the present disclosure, the first active stretching portion 56 is driven by a stretching rod, and includes a fourth electric push rod, which is disposed along the transverse direction of the lower leg supporting surface 300 and fixed on the other first sliding seat 54, and the stretching end thereof passes through the corresponding connecting portion to be fixed thereto. According to an embodiment of the present disclosure, the first lateral pressing assembly further includes a third driving portion 58 for driving the first linkage plate 57 to slide and lock along the first supporting rod 301. So as to adjust the lateral pressure position of the first lateral pressure component and adapt to the surgical requirements of different patients.
Specifically, the third driving portion 58 includes an electric push rod, which is disposed along the direction of the first supporting rod 301 and fixed to the lower leg supporting surface 300, and the telescopic end of which is fixed to a first sliding seat 54. The first slide 54 is driven by the extension or contraction of the electric push rod to drive the first side pressing assembly to move up and down along the direction of the first supporting rod 301.
When the automatic traction device is applied to the tibia intramedullary nail bone setting operation, the internal rotation eversion angle, the lateral angulation deformity and the front and back angulation deformity of the distal end of the tibia can be corrected through the selective cooperation of the first lifting mechanism, the first distance adjusting mechanism and the tibia broken bone resetting mechanism on the tibia Kirschner wire mounting position, the traction stretching is performed, the tibia fracture is aligned and the length of the lower limb is recovered, the quality of the intramedullary nail placement operation is improved, the postoperative recovery is facilitated, the automatic adjustment of each mechanism is realized, the operation difficulty of the doctor operation is reduced, the operation steps are simplified, and the operation time is shortened.
According to an embodiment of the present disclosure, the device further comprises a second lifting mechanism for driving the two femoral kirschner wires to move up and down along the thigh bearing surface 200 synchronously and lock.
According to an embodiment of the present disclosure, the second lifting mechanism includes two second lifting portions, and the second lifting portions are disposed on each second supporting rod 201 and connected to the corresponding femoral k-wire mounting structure 20 through the universal ball joint 003, and the two second lifting portions can be driven separately, so that the two strands of the corresponding femoral k-wire mounting structures 20 move and lock along the second supporting rod 201 synchronously, and the two second lifting portions can also be driven simultaneously.
When the femoral k-wire mounting structure 20 is fixed to the second k-wire, the two second k-wires are driven in parallel, but the second k-wire is not necessarily driven in the transverse direction of the thigh support surface 200 because the insertion angle is different, so that when the two strands of bone k-wire mounting structures 20 are fixed to the corresponding ends of the second k-wire, the two second lifting portions can be driven independently, so that the two strands of bone k-wire mounting structures 20 are fixed to the corresponding ends of the second k-wire.
After the femoral kirschner wire mounting structure 20 is fixed with the second kirschner wire, when the fractured bone of the femur has internal rotation or eversion displacement, the two second lifting parts can be driven independently to adjust the relative distance between the two ends of the second kirschner wire and the thigh bearing surface 200, so that the internal rotation or eversion angle of the fractured bone at the far end of the femur is corrected, and the displaced fractured bone is reset.
When the length of the lower limb is recovered, the two second lifting parts can be driven simultaneously to pull the second Kirschner wire to the far end of the femur, so that the fracture of the fractured bone is reduced, and the length of the lower limb is recovered.
According to an embodiment of the present disclosure, each of the second elevating portions includes an elevating arm 61, a fourth driving portion 62, a connecting arm 63, and a mounting sleeve 64.
The lifting arm 61 is disposed in parallel with the second support rod 201 and at the upper end thereof. The fourth driving part 62 is used for driving the lifting arm 61 to move up and down along the second support rod 201 and to be locked. The connecting arm 63 is disposed at an angle to the lifting arm 61 and connected to the upper end of the lifting arm 61. The mounting sleeve 64 is sleeved on the connecting arm 63. Two thighbone kirschner wire installation position sets up along linking arm 63 length direction, and thighbone kirschner wire mounting structure 20 connects on installation cover 64 with the help of universal ball joint 003.
According to an embodiment of the present disclosure, the fourth driving portion 62 is driven by a lead screw nut, and includes a third driving screw rod, which is disposed parallel to the lifting arm 61, and the lower end of which is connected to a third motor fixed to the second supporting rod 201; and a second slider fixed with the lifting arm 61 and connected to the third driving screw through threads. The second slider is driven to move up and down by the forward rotation or the reverse rotation of the third motor, so that the lifting arm 61 is driven to lift.
According to an embodiment of the present disclosure, the fourth driving portion 62 is driven by a telescopic rod, and includes a sixth electric push rod, which is disposed parallel to the lifting arm 61 and fixed to the second support rod 201, and a telescopic end of the sixth electric push rod is fixed to the lifting arm 61. The sixth electric push rod extends or contracts to drive the lifting arm 61 to lift.
According to an embodiment of the present disclosure, a second distance adjustment mechanism is further included for driving the femoral Kirschner wire mounting structure 20 along the connecting arm 63 toward or away from the thigh bearing surface 200.
According to an embodiment of the present disclosure, the second distance adjusting mechanism includes two automatic telescopic parts 70, can adopt automatic control components such as electric putter, cylinder, hydro-cylinder, each automatic telescopic part 70 sets up and is fixed with a linking arm 63 along linking arm 63 direction, make thighbone kirschner wire mounting structure 20 rotate with installation cover 64 through universal ball joint and be connected, two automatic telescopic parts 70 can the individual drive to make installation cover 64 slide along the linking arm 63 that corresponds the side, two automatic telescopic parts 70 can also drive simultaneously.
When thighbone kirschner wire mounting structure 20 is fixed with the second kirschner wire, because the second kirschner wire is beaten the position and is beaten the distance of position apart from thigh bearing surface 200 according to patient's condition diverse, second roll adjustment portion can drive alone, makes two strands of bone kirschner wire mounting structure 20 correspond to the both ends of second kirschner wire and fix.
After the femoral Kirschner wire mounting structure 20 and the second Kirschner wire are fixed, when the lateral angulation deformity exists in the fractured bone of the femur, the two second distance adjusting parts are driven independently to adjust the relative heights of the two ends of the second Kirschner wire, so that the lateral angulation displacement of the fractured bone of the femur is corrected.
According to an embodiment of the present disclosure, the device further comprises a mechanism for adjusting the angle between the connecting arm 63 and the lifting arm 61. By adjusting the pitch angle of the connecting arm 63, the anteroposterior angulation of the femoral fracture can be corrected to reposition the displaced fracture.
According to an embodiment of the present disclosure, the mechanism for adjusting the angulation of the fractured femur anteroposterior comprises two fifth driving portions 80 respectively disposed at the free ends of the two connecting arms 63 for driving the connecting arms 63 to rotate along the hinged joint with the lifting arm 61.
According to an embodiment of the present disclosure, each of the fifth driving portions 80 is driven by a screw nut, and includes a fourth driving screw, which forms a triangle with the connecting arm 63 and the lifting arm 61, and the lower end of which is connected to a fourth motor hinged to the thigh supporting surface 200; and the second long sleeve is in threaded connection with the upper end of the fourth driving screw, and the upper end of the second long sleeve is hinged with the free end of the connecting arm 63. The second long sleeve is screwed in or out by the forward rotation or the reverse rotation of the fourth motor, thereby adjusting the pitch angle of the connecting arm 63.
According to an embodiment of the present disclosure, each of the fifth driving portions 80 is driven by a telescopic rod, and includes an eighth electric push rod, which forms a triangle with the connecting arm 63 and the lifting arm 61, and the lower end of the eighth electric push rod is hinged to the leg supporting surface, and the upper end of the eighth electric push rod is hinged to the free end of the connecting arm 63. The eighth electric push rod is extended or contracted, so that the pitch angle of the connecting arm 63 is adjusted.
According to an embodiment of the present disclosure, the femoral fracture reduction device further comprises at least one second jacking assembly, which is arranged at a longitudinal centerline of the thigh supporting surface 200; and at least two second side pressing assemblies respectively arranged at two sides of the thigh bearing surface 200.
According to an embodiment of the present disclosure, the second jacking assembly includes a thigh fixing plate having an inward concave arc, and two ends of the thigh fixing plate are slidably connected to the corresponding second supporting rods 201; and the ninth electric push rod is fixed in the middle of the thigh fixing plate, the telescopic end of the ninth electric push rod protrudes out of the thigh fixing plate, and a top pressure plate is fixed to increase the side pressure area and not damage skin tissues, and the top pressure plate is preferably a hemispherical surface protruding towards the side of the limb.
When the second jacking assembly is used for correcting the displacement of the broken femur, the ninth electric push rod is controlled to extend, so that one end of the femur is squeezed outwards, and the other end of the femur moves inwards to adjust the front-back angulation of the broken femur.
According to an embodiment of the present disclosure, the second jacking assembly further includes a sixth driving portion for driving the thigh fixing plate to slide along the second supporting rod 201 and lock. The jacking position of the second jacking assembly is adjusted to meet the operation requirements of different patients.
Specifically, the fourth driving portion 62 includes a tenth electric push rod, which is disposed along the direction of the second supporting rod 201 and fixed to the thigh supporting surface 200, and the telescopic end of the tenth electric push rod is fixed to the thigh fixing plate, and two ends of the thigh fixing plate are slidably connected to the second supporting rod 201. The motion of the thigh fixing plate along the second supporting rod 201 is driven by the extension and contraction of the tenth electric push rod.
According to an embodiment of the present disclosure, the second lateral pressing assembly includes two second sliders, a second passive telescopic portion, a second active telescopic portion, and a second linkage plate. Wherein, the thigh fixing plate and the second linkage plate can be a plate body.
The two second sliding seats are respectively arranged on the two second supporting rods 201 and are connected with the second supporting rods 201 in a sliding manner. And a second passive telescopic part which is arranged along the transverse direction of the thigh bearing surface 200 and is fixed on a second sliding seat, and comprises a rod body and a pipe body which is in sliding sleeve joint with the rod body. A second active stretching part, which is arranged along the lateral direction of the thigh bearing surface 200 and fixed on the other second slide seat, and the stretching end of the second active stretching part faces the second passive stretching part. The second linkage plate is provided with an inward sunken radian, two ends of the second linkage plate are outwards turned to form a connecting part, the movable end of the second passive expansion part and the expansion end of the second active expansion part both penetrate through the connecting part and are fixed with the connecting part, and side pressing plates are fixed at the opposite ends of the second passive expansion part and the second active expansion part so as to increase the side pressing area and not damage skin tissues, and preferably, the side pressing plates are hemispherical surfaces protruding towards the limb side.
When the second top side pressing component is used for correcting the broken femur displacement, the second active telescopic part extends, the second linkage plate moves towards the second passive telescopic part to push the second passive telescopic part to contract, so that the second active telescopic part presses one side of the proximal end of the femur of the patient, and the other side of the proximal end of the femur of the patient is not stressed; the second active telescopic part contracts, and the second linkage plate moves towards the second active telescopic part, so that the second passive telescopic part is pulled to extend, and the second passive telescopic part is enabled to press the other side of the proximal end of the femur of the patient. Through the use of the second apical compression assembly, the lateral angulation deformity of the femoral fracture may be corrected.
According to an embodiment of the present disclosure, the second active telescopic part is driven by a lead screw nut, and includes a fourth driving screw rod, which is disposed along the lateral direction of the thigh supporting surface 200, and the outer end of the fourth driving screw rod is connected to a fifth motor fixed to another second sliding seat; and the third long sleeve is in threaded connection with the other end of the fourth driving screw and penetrates through the corresponding connecting part to be fixed with the fourth driving screw. The third long sleeve is driven to reciprocate through forward rotation or reverse rotation of the fifth motor, and extension or shortening of the second active telescopic part is achieved.
According to an embodiment of the present disclosure, the second active telescopic portion is driven by a telescopic rod, and includes an eleventh electric push rod, which is disposed along the lateral direction of the thigh supporting surface 200 and fixed on the other second sliding seat, and the telescopic end of the second active telescopic portion passes through the corresponding connecting portion and is fixed thereto.
According to an embodiment of the present disclosure, the second lateral pressing assembly further includes a seventh driving portion for driving the second sliding base to slide along the second supporting rod 201 and lock. So as to adjust the lateral pressure position of the second lateral pressure component and adapt to the surgical requirements of different patients.
Specifically, the fifth driving portion 80 includes a twelfth electric push rod, which is disposed along the direction of the second support rod 201 and fixed to the thigh supporting surface 200, and a telescopic end of the twelfth electric push rod is fixed to the second sliding base. The twelfth electric push rod is extended or shortened to drive the second slide carriage to drive the second lateral pressing assembly to move along the second support rod 201.
When the automatic traction device is used for femoral intramedullary nail bone setting operation, the internal rotation eversion angle, the lateral angulation deformity and the front and back angulation deformity of the distal end of a femur can be corrected and traction stretching can be carried out through the selective cooperation of the second lifting mechanism, the second distance adjusting mechanism, the front and back angulation adjusting mechanism and the femoral fractured bone resetting mechanism on the mounting position of the femoral Kirschner wire, so that the femoral fracture is aligned and the length of the lower limb is recovered, the quality of the intramedullary nail placement operation is improved, the postoperative recovery is facilitated, the operation difficulty of the doctor operation is reduced through the automatic adjustment of each mechanism, the operation steps are simplified, and the operation time is shortened.
The electric push rod applied to the automatic traction device for the tibia fracture and setting operation can be replaced by an automatic telescopic component such as an air cylinder or an oil cylinder.
The above is only a preferred embodiment of the invention, and any simple modifications, variations and equivalents of the invention may be made by anyone in light of the above teachings and fall within the scope of the invention.
Claims (14)
1. An automatic traction device for a tibial fracture osteosynthesis procedure, comprising:
the support frame is in a triangular structure and is used for supporting the lower limbs of a patient to enable the lower limbs of the patient to be bent and keep the leg bending state, the support frame comprises a horizontally arranged support bottom surface (100), a thigh bearing surface (200) and a shank bearing surface (300) which are arranged at two ends of the support bottom surface (100) in a back-to-back mode, the end parts of two adjacent surfaces are hinged, and the length of each surface can be adjusted and locked by virtue of an edge adjusting mechanism;
the tibia kirschner wire mounting position is provided with two tibia kirschner wire mounting structures (10) which are respectively arranged at two sides of a calf bearing surface (300) and are used for being fixed with two ends of a first kirschner wire which penetrates through a calcaneus or a tibia far end of a patient, and a first traction bow (001) is further pulled on the first kirschner wire.
2. The automatic towing apparatus according to claim 1,
the shank bearing surface (300) comprises two first supporting rods (301), the two first supporting rods (301) are respectively arranged on two sides of the shank bearing surface (300) and arranged along the length direction of the shank bearing surface (300), a supporting plate (302) used for supporting the far end of a tibia is arranged between the two first supporting rods (301), and the edge adjusting mechanism enables the two first supporting rods (301) to synchronously extend and retract through an automatic or manual driving structure so as to realize the length adjustment of the shank bearing surface (300);
the thigh bearing surface (200) comprises two second supporting rods (201), the two second supporting rods (201) are respectively arranged on two sides of the thigh bearing surface (200) and arranged along the length direction of the thigh bearing surface (200), and the edge adjusting mechanism enables the two second supporting rods (201) to synchronously stretch and retract through an automatic or manual driving structure so as to realize the length adjustment of the thigh bearing surface (200);
also includes a support beam (202) located at the intersection of the thigh support surface (200) and the calf support surface (300).
3. The automatic traction device of claim 2, further comprising:
the first lifting mechanism is used for driving the tibia Kirschner wire mounting structure (10) to move up and down along the calf bearing surface (300) and lock.
4. The automatic traction device of claim 3, wherein the first lifting mechanism comprises:
two first lift portions (30) are arranged on each first bracing piece (301) respectively to be connected through universal ball joint (003) with corresponding shin bone kirschner wire mounting structure (10), two first lift portions (30) can drive alone, make shin bone kirschner wire mounting structure (10) of corresponding side move and lock along first bracing piece (301), and two first lift portions (30) can also drive simultaneously.
5. The automatic traction device according to claim 4, characterized in that each of said first lifter portions (30) comprises:
a first slide block (31) which is rotatably connected with the corresponding tibia Kirschner wire mounting structure (10) in a plane parallel to the calf support surface (300) by a universal ball joint (003); and
a first driving part for driving the first slide block (31) to move along the direction of the first supporting rod (301).
6. The automatic traction device according to claim 5, wherein the first driving portion is driven by a lead screw nut or a telescopic rod, and comprises:
the first driving screw is rotatably connected to the lower end of the first supporting rod (301); the first motor is connected to the lower end of the first driving screw rod and hinged to the supporting bottom surface (100), and the first sliding block (31) is connected to the first driving screw rod in a threaded mode; or
The first electric push rod is arranged in parallel with the first supporting rod (301) and is fixed with the lower leg bearing surface (300), and the telescopic end of the first electric push rod is fixed with the first sliding block (31); the first sliding block (31) is sleeved on the corresponding first supporting rod (301) in a sliding mode.
7. The automatic traction device of claim 5, further comprising:
a first distance adjustment mechanism for driving the tibial Kirschner wire mounting structure (10) to move closer to or away from the calf support surface (300).
8. The automatic traction device according to claim 7, wherein the first distance adjustment mechanism comprises:
two first roll adjustment portions (40), set up perpendicularly with shank bearing surface (300), divide and arrange in between two first sliders (31) and universal ball joint (003), two first roll adjustment portions (40) can drive alone, make shin bone kirschner wire mounting structure (10) of corresponding side be close to or keep away from shank bearing surface (300) motion and locking, and two first roll adjustment portions (40) can also drive simultaneously.
9. The automatic traction device according to claim 2 or 7, further comprising:
a tibial bone fracture reduction mechanism comprising:
the first jacking assembly is arranged at the longitudinal center line position of the lower leg bearing surface (300);
at least two first lateral pressing components which are respectively arranged on two sides of the lower leg bearing surface (300); and
one end of the binding belt is fixed with one first supporting rod (301), the other end of the binding belt is detachably fixed with the other first supporting rod (301), or the binding belt is folded around the other first supporting rod (301) and then detachably fixed with the original first supporting rod (301), and the length of the binding belt around the lower leg of the patient is adjustable.
10. The automatic traction device of claim 9, wherein the first jack assembly comprises:
the lower leg fixing plate (51) is provided with an inward sunken radian, and two ends of the lower leg fixing plate (51) are connected with the corresponding first supporting rods (301); and
and the third electric push rod (52) is fixed in the middle of the shank fixing plate (51), the telescopic end of the third electric push rod protrudes out of the shank fixing plate (51), and a top pressure plate is fixed on the third electric push rod.
11. The automatic traction device of claim 10, wherein the first jack assembly further comprises:
and a second driving part (53) for driving the lower leg fixing plate (51) to slide along the first supporting rod (301) and lock.
12. The automatic traction device of claim 9, wherein the first lateral compression assembly comprises:
the two first sliding seats (54) are respectively arranged on the two first supporting rods (301) and are connected with the first supporting rods (301) in a sliding manner;
a first passive telescopic part (55) which is arranged along the transverse direction of the lower leg bearing surface (300) and is fixed on a first sliding seat (54), and comprises a rod body and a pipe body which is in sliding sleeve joint with the rod body;
a first active telescopic part (56) which is arranged along the transverse direction of the lower leg bearing surface (300) and is fixed on the other first sliding seat (54), and the telescopic end of the first active telescopic part faces the first passive telescopic part (55); and
the first linkage plate (57) is provided with an inward concave radian, two ends of the first linkage plate are turned outwards to form a connecting part, and the movable end of the first passive telescopic part (55) and the telescopic end of the first active telescopic part (56) both penetrate through the connecting part and are fixed with the connecting part;
and side pressure plates are fixed at the opposite ends of the first passive telescopic part and the first active telescopic part.
13. Automatic traction device according to claim 12, characterized in that said first active telescopic part (56) is driven by a lead screw nut or by a telescopic rod, comprising:
a second driving screw rod which is arranged along the transverse direction of the lower leg bearing surface (300), and the outer end of the second driving screw rod is connected with a second motor which is fixed with the other first sliding seat (54); the first long sleeve is in threaded connection with the other end of the second driving screw and penetrates through the corresponding connecting part to be fixed with the second driving screw; or
And the fourth electric push rod is arranged along the transverse direction of the lower leg bearing surface (300) and is fixed on the other first sliding seat (54), and the telescopic end of the fourth electric push rod penetrates through the corresponding connecting part to be fixed with the corresponding connecting part.
14. The automatic traction device of claim 12, wherein the first lateral compression assembly further comprises:
and the third driving part (58) is used for driving the first linkage plate (57) to slide along the first supporting rod (301) and lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911417598.3A CN111012467A (en) | 2019-12-31 | 2019-12-31 | Automatic traction device for tibia fracture coaptation operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417598.3A CN111012467A (en) | 2019-12-31 | 2019-12-31 | Automatic traction device for tibia fracture coaptation operation |
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| CN111012467A true CN111012467A (en) | 2020-04-17 |
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| CN201911417598.3A Pending CN111012467A (en) | 2019-12-31 | 2019-12-31 | Automatic traction device for tibia fracture coaptation operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114010291A (en) * | 2021-03-31 | 2022-02-08 | 上海黑焰医疗科技有限公司 | External fixation clamp for fracture and system thereof |
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2019
- 2019-12-31 CN CN201911417598.3A patent/CN111012467A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114010291A (en) * | 2021-03-31 | 2022-02-08 | 上海黑焰医疗科技有限公司 | External fixation clamp for fracture and system thereof |
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