CN111956315A - Traction reduction device for tibia fracture coaptation operation - Google Patents
Traction reduction device for tibia fracture coaptation operation Download PDFInfo
- Publication number
- CN111956315A CN111956315A CN202010969385.8A CN202010969385A CN111956315A CN 111956315 A CN111956315 A CN 111956315A CN 202010969385 A CN202010969385 A CN 202010969385A CN 111956315 A CN111956315 A CN 111956315A
- Authority
- CN
- China
- Prior art keywords
- rod
- block
- traction
- bearing surface
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 32
- 206010043827 tibia fracture Diseases 0.000 title abstract description 5
- 210000002303 tibia Anatomy 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 33
- 244000309466 calf Species 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 210000004233 talus Anatomy 0.000 claims abstract description 3
- 210000001699 lower leg Anatomy 0.000 claims description 67
- 238000003825 pressing Methods 0.000 claims description 50
- 210000000988 bone and bone Anatomy 0.000 claims description 13
- 210000003781 tooth socket Anatomy 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 210000000629 knee joint Anatomy 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims 2
- 210000003141 lower extremity Anatomy 0.000 abstract description 11
- 210000002414 leg Anatomy 0.000 abstract description 7
- 238000005452 bending Methods 0.000 abstract description 5
- 210000000689 upper leg Anatomy 0.000 description 30
- 206010017076 Fracture Diseases 0.000 description 16
- 238000002513 implantation Methods 0.000 description 6
- 208000004367 Tibial Fractures Diseases 0.000 description 5
- 230000036544 posture Effects 0.000 description 5
- 210000003414 extremity Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 208000008924 Femoral Fractures Diseases 0.000 description 2
- 206010016454 Femur fracture Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000001137 tarsal bone Anatomy 0.000 description 2
- 206010061599 Lower limb fracture Diseases 0.000 description 1
- 206010048873 Traumatic arthritis Diseases 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 210000000459 calcaneus Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (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 traction reduction device for a tibia fracture and coaptation operation, wherein a support frame of the traction reduction device is in a triangular structure and is used for supporting the lower limb of a patient to form and keep a leg bending state, and a tibia traction mechanism used for drawing a Kirschner wire tibia penetrating through the ankle bone or the far end of the tibia of the patient is arranged on a calf bearing surface. The device can carry out accurate, quick adjustment to the broken bone and reset.
Description
Technical Field
The invention relates to the technical field of orthopedic medical instruments, in particular to a traction reduction 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
Femur and shin bone fracture are the common fracture in clinic, because leg muscle strength is powerful, often can appear shortening deformity under the traction of muscle after patient's shin bone takes place, and it is comparatively difficult to restore to the throne in the art, resume its length and effectively maintain. If the patient can not be anatomically reduced during the operation, complications such as malformation healing and poor lower limb force line can occur after the operation, thereby causing traumatic arthritis or osteoarthritis and seriously affecting the limb function and the life quality of the patient.
Intramedullary nail fixation or percutaneous minimally invasive implantation of bone fracture plates is a common treatment method for femoral and tibial fractures, and intraoperative traction is an important means for reducing femoral and tibial fractures and recovering the length of lower limbs. At present, two assistants are generally needed to help traction a patient when an intramedullary nail or percutaneous minimally invasive bone plate is implanted for operation, the two assistants respectively hold the near end and the far end of a broken bone to reposition the femur or tibia, however, the method cannot stably maintain fracture repositioning and lower limb length, and the repositioning effect is not ideal, so that the treatment effect is influenced; moreover, the two assistants can crowd the space of the operator and influence the operation of the operator.
The defects can be overcome by adopting the traction device to reposition the fractured femur or tibia, but the existing traction devices straighten the lower limb, and the intramedullary nail is implanted from the distal end of the femur or the proximal end of the tibia, so that the patient can only perform the operation by keeping the leg-bending posture.
The Chinese patent application CN201911423627.7 discloses an automatic traction device for lower limb fracture setting operation, which enables a patient to keep leg bending posture for operation by arranging a triangular support frame, completes the traction of the broken bone by the functions of hinging among all surfaces and adjusting the length, is also provided with an adjusting mechanism with each angle on the support frame, is convenient for resetting the broken bone, meets various requirements of operation in the operation, is suitable for different situations of different patients, and has higher popularization. However, the device has at least the following disadvantages:
1. when the installation position of the tibial Kirschner wire is adjusted to be close to or far away from the lower leg bearing surface, the position is adjusted only by the first distance adjusting part in the form of an electric push rod and the like, so that the adjustment precision is not high and the adjustment time is long;
2. when the Kirschner wire penetrating through the ankle bone or the tibia far end of a patient is drawn, the traction bow is adopted for drawing, protrudes out of the surface of the shank, occupies a large space, is easy to be collided by external force, and has poor drawing stability.
Disclosure of Invention
The invention aims to solve the technical problem of providing a traction reduction device which can be accurately and quickly adjusted and is used for the tibia fracture setting operation.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a pull resetting means for shin bone fracture coaptation operation, its characterized in that includes:
the support frame is of a triangular structure formed by three surfaces in a surrounding manner, is provided with a lower leg bearing surface for bearing the lower leg of a patient, and the top of the support frame is provided with a supporting part for supporting the knee joint of the patient; and
the tibia traction mechanism is arranged on the calf bearing surface and used for drawing the Kirschner wire passing through the ankle bones or the distal tibia of the patient; wherein
The tibial distraction mechanism includes:
the first sliding blocks are respectively arranged on two sides of the shank bearing surface, are connected to the shank bearing surface in a sliding mode along the length direction and can be locked with the support frame through the first locking structure, and are provided with through holes perpendicular to the shank bearing surface and sliding grooves penetrating through the through holes;
the two quick adjusting blocks I are respectively arranged in the two sliding grooves in a sliding mode, each quick adjusting block I is provided with an inserting hole which can be coaxial with the through hole and is larger than the through hole in diameter, and a protruding clamping block I is arranged on the inner wall of each inserting hole;
the two springs I are respectively pressed between the bottom of the sliding chute and the quick adjusting block I, and outward thrust is applied to the quick adjusting block I;
the positioning structure is used for preventing the first quick adjusting block from being separated from the first sliding block and keeping a moving amount for enabling the first quick adjusting block to move inwards to further compress the first spring;
the diameter of the screw sleeve is matched with that of the through hole, the screw sleeve is inserted into the through hole and the jack, a plurality of circles of sunken clamping grooves I are formed in the outer wall of the screw sleeve at axial intervals, and under the action of a spring I, the screw sleeve and the jack are eccentrically arranged, so that a clamping block I is clamped into the clamping groove I and can slide along the clamping groove I, and the axial locking of the screw sleeve is realized;
the first screw rod is connected in the screw sleeve in a threaded manner, and the upper end of the first screw rod protrudes out of the screw sleeve;
the driving part is fixed at the lower end of the threaded sleeve and used for driving the threaded sleeve to rotate; and
and two ends of the traction assembly are respectively fixed with the upper ends of the first screw rods and are used for detachably connecting two ends of the Kirschner wire and transversely drawing the Kirschner wire.
A further technical solution is that the pulling assembly comprises:
the first two fixing blocks are respectively fixed at the upper ends of the first two screw rods, and are provided with through holes along the width direction of the lower leg bearing surface;
the two first traction rods are respectively and movably arranged in the through holes of the two first fixed blocks in an axial direction and are rotationally limited, external threads are arranged on the first traction rods, and one ends of the two first traction rods, which are opposite to each other, are detachably fixed with two ends of the Kirschner wire; and
and the two traction nuts are respectively in threaded connection with the first two traction rods and are positioned on the outer sides of the first fixed blocks.
A further technical solution consists in that,
the shank supporting surface is enclosed by two support rods which are respectively arranged at the two sides of the width of the shank supporting surface to form a rectangular frame structure, and the two ends of each support rod are connected with the corresponding parts of the other two surfaces;
the first sliding blocks are connected to the supporting rod in a sliding mode, a tibia far-end supporting piece is further arranged between the first sliding blocks, and two ends of the tibia far-end supporting piece are respectively pivoted to the back faces of the corresponding first sliding blocks.
The further technical solution is that the first locking structure comprises:
the outer wall of the supporting rod is provided with an external thread; and
and the first adjusting nut is connected to the support rod in a threaded manner and is movably and rotatably fixed with the corresponding first sliding block.
The technical scheme is that the fracture reduction mechanism further comprises a first fracture reduction mechanism for the tibia, and the first fracture reduction mechanism for the tibia comprises:
the tibia near-end supporting piece stretches across the calf bearing surface, two ends of the tibia near-end supporting piece can slide and be locked along the axial direction of the supporting rod through the fixing piece, and the tibia near-end supporting piece can also be located on the front side and the rear side of the calf bearing surface through the fixing piece, moves close to the calf bearing surface and is locked.
The further technical scheme is that the fixing piece can also rotate and be locked along the supporting rod.
A further technical solution is that the fixing member includes:
fixing the pressing plate;
the movable pressing plate is arranged in parallel with the fixed pressing plate, and the opposite surfaces of the fixed pressing plate and the movable pressing plate are correspondingly provided with arc-shaped pressing grooves for accommodating the supporting rods;
the bolt I is used for connecting the fixed pressing plate and the movable pressing plate and locking and fixing the fixed pressing plate and the movable pressing plate through a locking nut; and
and the second screw rod is perpendicular to the shank bearing surface and is rotatably fixed on the fixed pressing plate, two ends of the second screw rod extend out of the shank bearing surface, and two ends of the shank proximal end support piece are provided with threaded holes and are in threaded connection with the second screw rod.
A further technical scheme lies in, still include the fracture of shin bone canceling release mechanical system two, fracture of shin bone canceling release mechanical system two includes:
the at least two lateral jackscrews are respectively arranged at two sides of the shank bearing surface, are arranged in parallel with the shank bearing surface and are used for laterally jacking the proximal end of the tibia;
each side jackscrew can move close to or far away from the lower leg bearing surface through a side jacking driving assembly and is locked, moves along the length direction of the lower leg bearing surface and is locked, and moves axially and is locked.
The further technical scheme is that the side top driving component comprises:
the second sliding block is connected to the supporting rod in a sliding mode, and is provided with a through hole perpendicular to the shank bearing surface and a sliding groove penetrating through the through hole;
the second quick adjusting block is slidably arranged in the sliding groove, an inserting hole which can be coaxial with the through hole and has a diameter larger than that of the through hole is formed in the second quick adjusting block, a protruding second clamping block is arranged on the inner wall of the inserting hole, a locking hole for the supporting rod to movably penetrate is further formed in the second quick adjusting block, and the second quick adjusting block extends out of the sliding groove;
the spring IV is pressed between the bottom of the sliding groove and the quick adjusting block II and applies outward thrust to the quick adjusting block II; and
the outer diameter of the inserted rod is matched with the through hole and is inserted into the through hole and the jack, a plurality of circles of concave clamping grooves II are formed in the outer wall of the inserted rod at intervals in the axial direction, and the upper end of the inserted rod is connected with the side jackscrew;
under the effect of spring four, inserted bar and jack eccentric settings for in the second card of fixture block goes into draw-in groove two, realize the axial locking of inserted bar, and locking hole and bracing piece eccentric settings, make second of fast adjusting block support the bracing piece, realize the position locking of slider two.
The further technical scheme is that the side top driving component further comprises:
the second fixing block is fixed at the top of the inserting rod and is provided with a through hole;
adjusting a third nut;
the lateral jackscrew is provided with an external thread, the axial movement of the lateral jackscrew penetrates through the second fixed block and is limited by rotation, and the three adjusting nuts are connected to the lateral jackscrew through threads and are positioned on the inner side of the second fixed block and can be abutted against the inner side of the second fixed block.
The technical scheme is that the through hole in the sliding block II is provided with a plurality of radial clamping grooves III, the side wall of the inserted bar is provided with a radial protruding positioning fin, and the positioning fin can be clamped into any clamping groove III.
The further technical scheme is that the end parts of two adjacent surfaces in the supporting frame are hinged, and the length of each surface is adjustable and can be locked.
A further technical scheme lies in, the length of bracing piece is adjustable, includes:
a sleeve member;
the rod piece is sleeved with the sleeve piece in a sliding mode; and
and the annular lock can lock the sleeve piece and the rod piece.
A further technical solution consists in that the annular lock comprises:
the tooth grooves are formed in the rod piece at equal intervals in the axial direction and are triangular;
one end of the rotating handle is rotatably fixed at the end part of the sleeve piece, the other end of the rotating handle is sleeved outside the rod piece, and a notch is formed in the side wall of the rotating handle;
the locking block is inserted into the notch, can move radially in the notch and can be limited axially and annularly, the locking block can move radially inwards and can be clamped with the tooth socket, and a chamfer is arranged on one side, close to the casing piece, of the radial outer end of the locking block to form a wedge-shaped surface;
the lock sleeve is sleeved outside the sleeve piece in a sliding mode, an axial annular space is formed between the inner wall of the lock sleeve and the outer wall of the rotary handle, a circle of lock groove is formed in the position, corresponding to the lock block, of the inner wall of the lock sleeve, and the side wall, corresponding to the wedge-shaped surface of the lock block, of the lock groove is a wedge-shaped pushing surface; and
the second spring is arranged in the annular space;
when the locking block moves towards the locking groove, the locking sleeve can be driven to extrude the second spring and is separated from the tooth groove on the rod piece.
The further technical scheme is that the rod piece is provided with a length marking line for displaying the length of the telescopic supporting rod.
The technical scheme is that a guide limiting groove is axially formed in the rod piece, a block capable of sliding in the guide limiting groove is fixed on the sleeve piece, and one end, located in the sleeve piece, of the guide limiting groove is sealed.
The technical scheme is that a primary-secondary embedded structure is arranged between the end face of the sleeve piece and the rotating handle, the rotating handle rotates 90 degrees from the tooth socket to the smooth face side of the rod piece on the sleeve piece and then is limited, and the rotating handle rotates 90 degrees in the opposite direction and then is limited.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the shin bone traction mechanism in the device has the regulation function of multi-angle:
1. the first sliding blocks are synchronously adjusted to slide along the length direction of the shank bearing surface, and the position of a connecting line of the two ends of the traction assembly on the length direction of the shank bearing surface can be adjusted;
2. sliding any one of the sliding blocks along the length direction of the lower leg bearing surface, so that the inclination angle of the connecting line of the two ends of the traction assembly in the lower leg bearing surface can be adjusted;
3. the height of the first screw rods is synchronously adjusted, namely the distance between a connecting line at two ends of the traction assembly and the lower leg bearing surface can be adjusted;
4. the included angle formed by the connecting line of the two ends of the traction component and the lower leg bearing surface, namely the inward-rotation or outward-rotation angle 5 can be adjusted by adjusting the height of any screw rod I.
Therefore, the tibia traction mechanism can be fixed with the Kirschner wire driven at any angle, and then the lateral angulation deformity, the anteroposterior angulation deformity and the internal rotation and eversion angles of the fractured tibia can be corrected by traction of the Kirschner wire at different angles.
In addition, the traction assembly not only maintains tension on the k-wire, but also adjusts the amount of lateral traction at either end of the traction assembly, as well as correcting lateral angulation deformities of the fractured bone.
Moreover, the height adjusting mode of the first screw rod by the tibia traction mechanism has two modes of quick adjustment and accurate adjustment:
when the height difference of a first screw rod needing to be adjusted is large, the first spring is inwards extruded by pressing the first quick adjusting block, the acting force of the first quick adjusting block of the first spring is overcome, the jack on the first quick adjusting block and the threaded sleeve are concentrically arranged, the first clamping block is withdrawn from the first clamping groove on the threaded sleeve, and at the moment, medical personnel can hold the threaded sleeve by hand to adjust the large-size height, and the threaded sleeve is in threaded connection with the first screw rod, so that the quick adjustment of the height of the traction assembly can be realized; after coarse adjustment is carried out in place, the first quick adjusting block is released, the spring releases energy, the jack on the first quick adjusting block and the threaded sleeve are arranged eccentrically, and the first clamping block is clamped into the first clamping groove to realize axial fixation of the threaded sleeve;
when the height of the first screw rod needs to be accurately adjusted, the motor drives the threaded sleeve to rotate, and the first clamping block is clamped into the first clamping groove to limit the axial direction of the threaded sleeve, so that the first screw rod is driven to axially move, and the accurate adjustment of the height of the first traction rod is realized.
The operation time can be saved by quickly adjusting the height of the screw rod I, and the device is particularly suitable for operation adjustment when the Kirschner wire is installed on the traction assembly; the precision to screw rod one height is adjusted, is particularly suitable for carrying out the operation regulation when tractive resets to the broken bone, guarantees that the broken bone is good resets, and through the drive form of drive division, can effectively overcome the resistance when tractive, compares with manual quick adjustment mode, still can practice thrift medical personnel's physical power.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the structure of the apparatus;
FIG. 2 is a schematic view of the tibial distraction mechanism of the device;
FIG. 3 is a cross-sectional view of the support rod of the present device;
FIG. 4 is another cross-sectional view of the support rod of the present device;
FIG. 5 is a schematic end view of the connection end of the cannula member to the rotatable handle of the present device;
FIG. 6 is a schematic view of the construction of the annular lock in the present device;
FIG. 7 is a schematic view of the proximal tibial bearing component of the present device;
FIG. 8 is a schematic structural view of a second slide block in the device;
FIG. 9 is a schematic view of the side top drive assembly of the present apparatus;
FIG. 10 is a schematic view of the femoral distraction mechanism of the device;
FIG. 11 is a schematic view of the structure of the adjusting frame of the present device;
FIG. 12 is a side view of the pulling arm and connecting arm of the present device;
FIG. 13 is a schematic structural view showing a storage state of the apparatus;
FIG. 14 is another schematic view of the storage state of the device;
FIG. 15 is another schematic view of the present apparatus;
fig. 16 is a side view of the device.
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.
Example one
As shown in fig. 1 to 16, one embodiment of the traction reduction device for the tibia fracture bone setting surgery of the present disclosure includes a support frame and a tibia traction mechanism 110.
The support frame is placed on an operating table, a triangular structure is formed by three surfaces in an enclosing mode, the support frame is provided with a lower leg bearing surface 1 used for bearing lower legs of a patient, a support part 4 used for supporting knee joints of the patient is formed at the top of the support frame, and the support frame is used for supporting the lower limbs of the patient to enable the lower limbs of the patient to be formed and keep a leg bending state.
The tibia traction mechanism 110 is arranged on the calf bearing surface 1 and used for traction of a Kirschner wire penetrating through the ankle bones or the distal end of the tibia of a patient to promote effective reduction of the fractured tibia.
As shown in fig. 2, the tibial distraction mechanism 110 includes two sliders one 111, two quick adjustment blocks one 112, two springs one 113, a positioning structure, a threaded sleeve 114, a screw one 115, a driving portion, and a distraction assembly.
The two first sliding blocks 111 are respectively arranged on two sides of the lower leg bearing surface 1, and the first sliding blocks 111 are connected to the lower leg bearing surface 1 in a sliding mode along the length direction and can be locked with the supporting frame through the first locking structures. A through hole vertical to the lower leg bearing surface 1 and a sliding groove communicated with the through hole are arranged on the first sliding block 111.
The two first quick adjusting blocks 112 are respectively arranged in the two sliding grooves in a sliding mode, the first quick adjusting blocks 112 are provided with inserting holes which can be coaxial with the through holes and are larger than the through holes in diameter, and the inner walls of the inserting holes are provided with first protruding clamping blocks.
The two springs (113) are respectively pressed between the bottom of the sliding chute and the first quick adjusting block (112) and are in a compressed state, and outward thrust is applied to the first quick adjusting block (112).
And a positioning structure is arranged between the first quick adjusting block 112 and the first sliding block 111 and is used for preventing the first quick adjusting block 112 from being separated from the first sliding block 111, and a movement amount for enabling the first quick adjusting block 112 to move inwards to further compress the first spring 113 is reserved.
The diameter of the threaded sleeve 114 is matched with the through hole and is inserted into the through hole and the insertion hole, so that the threaded sleeve 114 is limited by the through hole in the radial direction. A plurality of circles of concave clamping grooves I are axially arranged on the outer wall of the threaded sleeve 114 at intervals, and under the action of a spring I113, the threaded sleeve 114 and the jack are eccentrically arranged, so that the clamping blocks I are clamped into the clamping grooves I and can slide along the clamping grooves I, and the axial locking of the threaded sleeve 114 is realized.
The first screw 115 is in threaded connection with the threaded sleeve 114, and the upper end of the first screw protrudes out of the threaded sleeve 114.
The driving portion is fixed to a lower end of the screw nut 114 and drives the screw nut 114 to rotate.
And two ends of the traction assembly are respectively fixed with the upper ends of the two first screw rods 115 and are used for detachably connecting two ends of the Kirschner wire and transversely drawing the Kirschner wire.
The implementation form of the positioning structure can set a long hole in the outer wall of the first quick adjusting block 112 along the direction of the sliding groove, a round hole is correspondingly arranged on the first sliding block 111, and then the positioning pin is penetrated through the long hole and the round hole, so that the first quick adjusting block 112 can be pressed inwards, and the first sliding block 111 cannot be separated from the positioning structure.
The shin bone traction mechanism 110 in the device has the multi-angle adjusting function:
1. the first sliding blocks 111 are synchronously adjusted to slide along the length direction of the lower leg bearing surface 1, so that the position of a connecting line (namely a kirschner wire) at the two ends of the traction assembly in the length direction of the lower leg bearing surface can be adjusted;
2. any one of the first sliding blocks 111 slides along the length direction of the lower leg bearing surface 1, so that the inclination angle of a connecting line of the two ends of the traction assembly in the lower leg bearing surface can be adjusted, namely the lateral angulation of the Kirschner wire;
3. the height of the first screw rods 115 is synchronously adjusted, namely the distance between a connecting line at the two ends of the traction assembly and the lower leg bearing surface can be adjusted;
4. the included angle formed by the connecting line of the two ends of the traction component and the lower leg bearing surface, namely the inward rotation and outward rotation angles of the kirschner wire, can be adjusted by adjusting the height of any screw rod I115.
Therefore, the tibia traction mechanism can be fixed with the Kirschner wire driven at any angle, and then the lateral angulation deformity, the anteroposterior angulation deformity and the internal rotation and eversion angles of the fractured tibia can be corrected by traction of the Kirschner wire at different angles so as to reduce the fracture.
In addition, the traction assembly not only maintains tension on the k-wire, but also adjusts the amount of lateral traction at either end of the traction assembly, as well as correcting lateral angulation deformities of the fractured bone.
Moreover, the height adjustment of the first screw 115 (i.e., the height adjustment of the distraction assembly) by the tibial distraction mechanism 110 has two modes, namely, a quick adjustment mode and a precise adjustment mode:
when the height difference of the first screw rod 115 needing to be adjusted is large, the first spring 113 is inwards extruded by pressing the first quick adjusting block 112, the acting force of the first spring 113 on the first quick adjusting block 112 is overcome, so that the jack on the first quick adjusting block 112 and the threaded sleeve 114 are concentrically arranged, the first clamping block is withdrawn from the first clamping groove on the threaded sleeve 114, at the moment, medical personnel can hold the threaded sleeve 114 by hand to adjust the large-size height, and the threaded sleeve 114 is in threaded connection with the first screw rod 115, so that the quick adjustment of the height of the first screw rod 115 can be realized; after coarse adjustment is carried out in place, the first quick adjusting block 112 is released, the first spring 113 releases energy, the jack on the first quick adjusting block 112 and the threaded sleeve 114 are arranged eccentrically, and the first clamping block is clamped into the first clamping groove to realize axial fixation of the threaded sleeve 114;
when the height of the first screw rod 115 needs to be accurately adjusted, the motor drives the threaded sleeve 114 to rotate, and the first clamping block is clamped into the first clamping groove to limit the axial direction of the threaded sleeve 114, so that the first screw rod 115 is driven to axially move, and the accurate adjustment of the height of the first traction rod 117 is realized.
Through the quick adjustment of the height of the screw rod I115, the operation time can be saved, and the operation adjusting device is particularly suitable for operation adjustment when the Kirschner wire is installed on the pulling assembly, but is not limited to the operation; the precision adjustment of the height of the first screw rod 115 is particularly suitable for operation adjustment (but not limited to the operation) during traction reduction of a broken bone, good reduction of the broken bone is guaranteed, resistance during traction can be effectively overcome through the driving form of the driving part, and compared with a manual quick adjustment mode, the manual quick adjustment device can also save physical strength of medical staff.
During operation, the support frame is placed on the operating table and below the lower limbs of a patient, the upper body of the patient lies flat, the affected limb is bent, and the lower leg is lapped on the lower leg bearing surface 1, 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.
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. under the perspective environment, a Kirschner wire is driven into a proper position at the far end of the tibia;
2. adjusting the position, angle and height of the pulling group price, and then fixing two ends of the Kirschner wire on the pulling assembly;
3. applying appropriate transverse traction force to the two ends of the Kirschner wire by using the tibia traction mechanism 110 so as to keep the Kirschner wire in a linear stretching state, adjusting the lateral, front-back and internal-external rotation angles of the Kirschner wire, adjusting the first sliding block 111 to move upwards, and reducing the fracture to promote the reduction of the fractured bone;
4. performing intramedullary nail implantation operation.
Example two
According to one disclosed embodiment, as shown in FIG. 2, the pulling assembly includes two securing blocks one 118, two pulling rods one 117, and two pulling nuts 119.
The two first fixing blocks 118 are respectively fixed at the upper ends of the two first screws 115, and are provided with through holes along the width direction of the lower leg bearing surface 1. The two first traction rods 117 are respectively and movably arranged in the through holes of the two first fixed blocks 118 in the axial direction and limited in rotation, external threads are arranged on the first traction rods 117, and the opposite ends of the two first traction rods 117 are detachably fixed with the two ends of the Kirschner wire. The two drawing nuts 119 are respectively in threaded connection with the two drawing rods one 117 and are positioned on the outer side of the fixing block one 118.
The specific form that the first traction rod 117 is limited by rotation can set the first traction rod 117 and the through hole on the first fixing block 118 to be matched polygons.
The detachable fixing form of the Kirschner wire and the traction rod I117 can adopt the mode that a fixed pressing plate is fixed on the two traction rod I117, the fixed pressing plate is connected with a movable pressing plate through a bolt and nut assembly to form an adjustable pressing groove, and the Kirschner wire is placed in the pressing groove and is screwed by a nut to realize the fixation.
After the two ends of the Kirschner wire are mounted on the first traction rod 117, the traction nut 119 is rotated to enable the first traction rod 117 to move outwards along the through hole on the first fixing block 118 so as to apply transverse traction force to the Kirschner wire, the Kirschner wire has tension in the length direction, and the lateral angulation deformity of the fractured tibia can be corrected by adjusting the screwing force of the traction nut 119 on one side.
EXAMPLE III
According to one disclosed embodiment, the lower leg bearing surface 1 is of a frame structure, the middle part of the lower leg bearing surface is hollow, perspective in operation is facilitated, and compression on lower limbs after fixation is reduced.
The shank supporting surface 1 is enclosed by two support rods 10 which are respectively arranged at two sides of the width of the shank supporting surface to form a rectangular frame structure, and two ends of each support rod 10 are connected with corresponding parts of the other two surfaces.
The first sliding blocks 111 are slidably connected to the support rod 10, a tibia far-end support member 120 is further disposed between the first sliding blocks 111, and both ends of the tibia far-end support member 120 are pivotally connected to the back surfaces of the corresponding first sliding blocks 111.
The material of the tibia far-end support piece 120 is a carbon fiber perspective material, two ends of the tibia far-end support piece 120 are pivoted to the back surfaces of the corresponding first sliding blocks 111, so that the position of the tibia far-end support piece 120 follows the position of the first sliding blocks 111, and the tibia far-end support piece 120 can support the tibia far end of the patient and is not limited by the height of the patient.
Example four
According to one embodiment of the disclosure, the first locking structure includes an external thread disposed on an outer wall of the support rod 10 and a first adjusting nut 116, and the first adjusting nut 116 is screwed on the support rod 10 and is movably fixed with the corresponding first sliding block 111 through a snap spring or a bearing. Fixed with respect to rotation means axially fixed, but circumferentially rotatable.
The first slider 111 is driven to move by rotating the first adjusting nut 116, and the position of the first slider 111 on the lower leg bearing surface 1 is locked by the threaded connection of the first adjusting nut 116 and the support rod 10.
EXAMPLE five
According to one disclosed embodiment, the distraction reduction device further comprises a first tibial fractured bone reduction mechanism 120, which can be used for supporting the proximal end of the tibia and correcting the anterior-posterior angulation deformity of the tibial fractured end.
The first tibial fracture reduction mechanism 120 comprises a proximal tibial support 123, and the proximal tibial support 123 is made of transparent carbon fiber. The proximal tibia support member 123 spans over the calf support surface 1, both ends of the proximal tibia support member 123 can slide and be locked along the axial direction of the support rod 1 through the fixing members 121, and the proximal tibia support member 123 can also be located on the front side and the rear side of the calf support surface 1 through the fixing members 121, and can move and be locked close to the calf support surface 1.
The middle part of the tibia proximal end supporting piece 123 is a concave radian, so that limbs can be better supported, and the limbs are prevented from being pressed during supporting.
EXAMPLE six
According to one embodiment disclosed, the fixing member 121 can also be rotated and locked along the support bar 1. Can be used for correcting the internal rotation and external rotation angles of the fractured tibia.
EXAMPLE seven
According to one embodiment of the disclosure, as shown in fig. 7, the fixing member 121 includes a fixed pressure plate 1211, a movable pressure plate 1212, a first bolt 1213 and a second screw 122.
The movable pressing plate 1212 is arranged in parallel with the fixed pressing plate 1211, the opposite surfaces of the fixed pressing plate 1211 and the movable pressing plate 1212 are correspondingly provided with arc-shaped pressing grooves for accommodating the supporting rod 10, and the fixed pressing plate 1211 and the movable pressing plate 1212 are connected by a first bolt 1213 and are locked and fixed by a nut.
The second screw 122 is perpendicular to the calf support surface 1 and is rotatably fixed on the fixed pressure plate 1211, two ends of the second screw 122 extend out of the calf support surface 1, and two ends of the tibia proximal support member 123 are provided with threaded holes and are in threaded connection with the second screw 122.
In addition, when the proximal tibial supporting component 123 is used only for supporting the patient, the second screw 122 is disposed on the outer side of the supporting rod 10 for the convenience of operation and for the obese.
And meanwhile, the second screw rods 122 on the two sides are rotated to drive the two ends of the tibia proximal end supporting piece 123 to synchronously move in the same direction, so that the movement close to or far away from the calf supporting surface 1 is adjusted. By adjusting the distance between the proximal tibia support 120 and the calf support surface 1, the proximal tibia support 123 also has the functions of jacking and pressing the proximal tibia, so that the anteroposterior angulation deformity of the fractured tibia can be corrected.
When the tibia has the forward angulation deformity, the tibia near-end support piece 123 is adjusted to be positioned in front of the calf, then the tibia near-end support piece 123 is driven to move backwards to be close to the calf bearing surface, the tibia near end is pressed downwards, and correction of the forward angulation deformity of the broken tibia is achieved.
When the tibia has the backward angulation deformity, the tibia near-end support piece 123 is adjusted to be positioned below the calf, then the tibia near-end support piece 123 is driven to move forwards to be close to the calf bearing surface, the tibia near end is jacked forwards, and correction of the backward angulation deformity of the broken tibia is achieved.
After the fixing pieces 121 on the two sides are loosened, the two ends of the tibia near-end supporting piece 123 can rotate, so that the two adjusting screws 122 can independently rotate to adjust the height of one end of the tibia near-end supporting piece 123 to adjust the distance between one end of the tibia near-end supporting piece 123 and the calf bearing surface 1, the adjustment of the internal rotation and external rotation angles of the fractured tibia is realized, the fixing pieces 121 on the two sides are fixed after the adjustment is finished, and the stability of the state is ensured.
Further, a third spring 1214 can be arranged on the first bolt 1213, and the third spring 1214 is positioned between the lock nut and the pressure plate on the same side. The third spring 1214 is arranged to rapidly spring the movable pressing plate 1212, so as to achieve the rotation between the fixing member 121 and the supporting rod 10.
Example eight
According to one disclosed embodiment, the reduction and distraction device is further provided with a second tibial fractured bone reduction mechanism 130 so as to correct the lateral angulation deformity of the tibial fractured bone.
The second tibial fracture reduction mechanism 130 comprises at least two lateral jackscrews 131 which are respectively arranged on two sides of the lower leg bearing surface 1, are arranged parallel to the lower leg bearing surface 1 and are used for laterally jacking the proximal end of the tibia.
A side pressing plate is detachably fixed at the front end of the side jackscrew 131 to ensure a pressing area and not damage skin tissues, the side pressing plate is preferably an arc-shaped plate, and the side pressing plate can be detached to expose the sharp end of the side jackscrew 131 according to the operation condition.
Each of the side jack screws 131 can move and lock close to or away from the lower leg support surface 1, move and lock along the length direction of the lower leg support surface 1, and move and lock axially by a side jack driving assembly.
Example nine
According to one disclosed embodiment, as shown in fig. 9, the side top driving assembly includes a second sliding block 132, a second quick adjusting block 133, a fourth spring 134 and a plunger 135.
The second sliding block 132 is slidably connected to the support rod 10, and an axially slidably connected concave-convex matching structure is provided between the second sliding block 132 and the support rod 10, so that the second sliding block 132 can only move axially along the support rod 10 and cannot rotate. A through hole vertical to the lower leg bearing surface 1 and a sliding groove communicated with the through hole are arranged on the second sliding block 132.
The second quick adjusting block 133 is arranged in the sliding groove in a sliding mode, a jack which can be coaxial with the through hole and is larger than the through hole in diameter is formed in the second quick adjusting block 133, a convex clamping block 1332 is arranged on the inner wall of the jack, a locking hole 1331 for enabling the supporting rod 10 to movably penetrate is further formed in the second quick adjusting block 133, and the second quick adjusting block 133 extends out of the sliding groove.
The spring IV 134 is pressed between the bottom of the sliding chute and the quick adjusting block II 133 and is in a compressed state, and outward thrust is applied to the quick adjusting block II 133.
The outer diameter of the inserted link 135 is matched with the through hole and inserted into the through hole and the insertion hole, and the through hole can radially limit the inserted link 135. A plurality of circles of concave clamping grooves II are axially arranged on the outer wall of the inserted rod 135 at intervals, and the upper end of the inserted rod 135 is connected with the side jackscrew 131.
Under the action of the fourth spring 134, the inserted link 135 and the jack are eccentrically arranged, so that the second clamping block is clamped into the second clamping groove, the axial locking of the inserted link 135 is realized, the locking hole 1331 and the support rod 10 are eccentrically arranged, the second quick adjusting block 133 abuts against the support rod 10, and the position locking of the second sliding block 132 is realized.
The outer end of the second quick adjusting block 133 is further connected with a second adjusting nut 136 through threads, and the second adjusting nut 136 is screwed to ensure the stability of locking the second sliding block 132 with the support rod 10.
When the distance between the side jackscrew 131 and the calf support surface 1 needs to be adjusted, the second adjusting nut 136 is loosened, medical staff press the second quick adjusting block 133 to further extrude the fourth spring 134 to overcome the acting force of the fourth spring 134 on the second quick adjusting block 133, so that the jack and the inserted rod 135 are concentrically arranged, the second clamping block exits from the second clamping groove, so that the medical staff can hold the inserted rod 135 to perform height adjustment, after the height of the inserted rod 135 is adjusted, the second quick adjusting block 133 is loosened, the inserted rod 135 and the jack are eccentrically arranged under the action of the fourth spring 134, the second clamping block is clamped into the second clamping groove to realize axial locking of the inserted rod 135, the second adjusting nut 136 is screwed again, so that the second adjusting nut 136 draws the second quick adjusting block 133 outwards, a pre-tightening force is formed between the locking hole 1 of the second quick adjusting block 133 and the supporting rod 10, and the position stability of the second sliding block 132 is ensured. Thereby achieving the movement and locking of the drive side jack screw 131 closer to or farther from the lower leg support surface 1.
When the position of the second sliding block 132 on the supporting rod 10 needs to be adjusted, the second adjusting nut 136 is loosened, and the medical staff pushes the second sliding block 132 to overcome the friction force between the locking hole 1331 and the supporting rod 10. Thereby realizing that the driving side jackscrew 131 moves and locks along the length direction of the lower leg bearing surface 1.
Example ten
According to one disclosed embodiment, the side top driving assembly further comprises a second fixing block 137 and a third adjusting nut 138, so as to realize the axial movement and locking of the driving side top thread 131.
The second fixing block 137 is fixed to the top of the inserting rod 135 and is provided with a through hole, the side jackscrew 131 is provided with an external thread, the axial movement of the second fixing block 137 is limited by rotation, the third adjusting nut 138 is in threaded connection with the side jackscrew 131 and is located on the inner side of the second fixing block 137 and can be abutted against the inner side of the second fixing block 137, the third adjusting nut 138 is axially positioned, and the side jackscrew 131 cannot be separated from the inner side of the second fixing block 137.
By rotating the third adjustment nut 138, axial movement of the lateral jackscrew 131 is driven to adjust the lateral jacking force to correct the lateral angulation deformity of the tibial eminence.
EXAMPLE eleven
According to a disclosed embodiment, as shown in fig. 8, the through hole of the second sliding block 132 has a plurality of radial slots 1321, and the side wall of the insert rod 135 has a radially protruding positioning fin, which can be inserted into any slot 1321.
The three clamping grooves 1321 are preferably arranged in three, so that the side jackscrews 131 can be perpendicular to the support rod 10 and form an included angle of 60 degrees and-60 degrees, and the operation is convenient.
Example twelve
According to one disclosed embodiment, the end parts of two adjacent surfaces in the supporting frame are hinged, and the length of each surface is adjustable and can be locked.
In order to adapt to the posture difference of different patients, the length of each surface of the support frame and the included angle are set to be adjustable, the height of the support frame and the length of the lower leg bearing surface 1 can be changed, so that the shape of the support frame can be adjusted according to the body shape of the patient, the lower legs of the patient can be carried on the lower leg bearing surface 1, and the use requirements of different patients can be met.
In addition, the support frame is adjusted to shorten the lower leg bearing surface, namely, the lower part of the lower leg bearing surface moves upwards, so that the Kirschner wire is driven to move upwards, upward traction force is applied to the Kirschner wire, the fracture of a broken bone is reduced, and the length of the lower limb is recovered. The traction can be realized by adjusting the length of the corresponding surface on the support frame, thereby being beneficial to improving the operation quality and the operation efficiency and being suitable for popularization and application in various medical institutions.
EXAMPLE thirteen
According to one disclosed embodiment, as shown in figures 3 and 4, the support bar 10 is adjustable in length to accommodate the adjustable length of the lower leg bearing surface.
The support rod 10 includes a telescopic structure including a sleeve member 101 and a rod member 102 slidably sleeved, and the combined length of the sleeve member 101 and the rod member 102 is locked by an annular lock to keep the length of the support rod 10 stable.
Example fourteen
According to one disclosed embodiment, the ring lock includes a rotating handle 103, a lock block 104, a lock sleeve 105, and a second spring 106.
A plurality of tooth sockets 1021 are axially and equidistantly arranged on the rod piece 102, the tooth sockets 1021 are triangular, and the triangular tooth sockets 1021 can form wedge-shaped surfaces in the axial direction and the annular direction, so that the lock block 104 can slide in and out conveniently.
One end of the rotating handle 103 is rotatably fixed at the end of the sleeve member 101 through a spring collar or a bearing, and the other end is sleeved outside the rod member 102, and a notch is formed in the side wall of the rotating handle 103.
The locking piece 104 is inserted into the notch, can radially move in the notch, and is axially and annularly limited, the locking piece 104 radially moves inwards and can be connected with the tooth socket 1021 in a clamping manner, and one side of the radial outer end of the locking piece 104, which is close to the casing part 101, is provided with a chamfer to form a wedge-shaped surface.
The lock sleeve 105 is slidably sleeved outside the sleeve member 101, an axial annular space is formed between the inner wall of the lock sleeve 105 and the outer wall of the rotating handle 103, a circle of lock groove is formed in the inner wall of the lock sleeve 105 corresponding to the lock block 104, and the side wall of the lock groove corresponding to the wedge-shaped surface of the lock block 104 is a wedge-shaped pushing surface.
The second spring 106 is arranged in the annular space.
When the lock block 104 moves towards the lock groove, the lock sleeve 105 can be driven to press the second spring 106 and disengage from the toothed groove 1021 on the rod 102.
When the length of the support rod 10 needs to be adjusted, the medical staff rotates the rotating handle 103, the rotating handle 103 simultaneously drives the locking block 104 to rotate, the locking block 104 can be separated from the tooth space 1021, and the rod member 102 and the cannula member 101 can be adjusted in length without axial limiting of the locking block 104. When the lock block 104 can be disengaged from the tooth socket 1021, the lock block 104 moves outward in the radial direction, and the wedge surface on the lock block 104 presses the pushing surface on the lock sleeve 105, so that the lock sleeve 105 moves axially towards one end of the sleeve member 101 and presses the second spring 106. After the length of the supporting rod 10 is adjusted, the rotating handle 103 is rotated reversely, when the rotating handle 103 drives the locking block 104 to move to the clamping groove position, the locking sleeve 105 is reset axially under the action of the second spring 106, and the locking block 104 can be pressed into the locking groove radially under the action of the pushing surface, so that the locking block 104 is effectively clamped in the tooth groove 1021, and the reliability of the length of the supporting rod 10 is ensured.
The telescopic link of this structure is manual regulation mode, and it is convenient to adjust, when the annular lock is in the open mode, can carry out the large-size quick adjustment to the length of bracing piece 10, can practice thrift operation time.
Example fifteen
According to the disclosed embodiment, as shown in fig. 4, a length marking 1022 is disposed on the side of the rod member 102 opposite to the tooth socket 1021 for displaying the length of the telescopic rear support rod 10, so as to facilitate the control of the size of the telescopic rod and facilitate the operation.
Example sixteen
According to one disclosed embodiment, a guiding and limiting groove 1023 is axially formed in the rod 102, a block 1011 capable of sliding in the guiding and limiting groove 1023 is fixed on the sleeve 101, and one end of the guiding and limiting groove 1023 in the sleeve 101 is closed.
The cooperation of direction spacing groove 1023 and guide block 226 for member 102 and casing 101 can only carry out the axial telescopic adjustment, can not take place to rotate, has avoided member 102 and casing 101 card to die. And the end of the guide limiting groove 1023 in the sleeve 101 is closed, so that the separation of the rod piece 102 and the sleeve 101 is avoided, the problem that the support frame scatters and loses the supporting force due to misoperation in the operation is avoided, and the reassembling of the support frame is avoided.
Example seventeen
According to the disclosed embodiment, as shown in fig. 5 and 6, a primary-secondary engagement structure is provided between the end surface of the sleeve member 101 and the rotating handle 103, and the rotating handle 103 is rotated by 90 ° on the sleeve member 101 from the tooth socket 1021 to the smooth surface side of the rod member 102 and then is limited, and is also rotated by 90 ° in the opposite direction and then is limited. Moreover, icons for displaying the opening or closing state of the annular lock are arranged on the support rod 10, so that the operation of medical staff is facilitated, and the operation correctness is ensured.
EXAMPLE eighteen
According to one disclosed embodiment, the device is provided with a femoral traction mechanism 210 on the thigh bearing surface 2, wherein the femoral traction mechanism 210 comprises a traction bow 211, two connecting sleeves 212, two traction rods two 213, two collars 214 and two adjusting nuts four 215.
The traction bow 211 spans the thigh support surface 2 and is detachably fastened to the thigh support surface 2.
The two connecting sleeves 212 are respectively fixed at two ends of the opening of the traction bow 211, are provided with round holes, the axes of the round holes are arranged along the width direction of the thigh bearing surface 2, the connecting sleeves are provided with round through holes, and the end surfaces of the outer ends of the connecting sleeves are provided with a first tooth 2121.
The two second traction rods 213 are respectively and movably arranged in the two connecting sleeves 212 in the axial direction and can move and rotate in the connecting sleeves 212 in the axial direction, external threads are arranged on the outer walls of the second traction rods 213, the cross sections of the external threads are non-circular, and the opposite ends of the two second traction rods 213 are detachably fixed with the two ends of the Kirschner wire by virtue of the first connecting assembly.
The two collars 214 are provided with holes matched with the cross sections of the second pulling rods 213, the collars 214 and the second pulling rods 213 cannot rotate relatively, the two collars 214 are respectively sleeved at the outer ends of the second pulling rods 213, and the inner end surfaces of the collars 214 are provided with second teeth 2141 capable of being meshed with the first teeth 2121.
The two adjusting nuts four 215 are respectively screwed on the two pulling rods two 213 outside the collar 214.
When the plane of two Kirschner wires driven at the far end of the femur is not in the same plane with the traction bow 211, the adjusting nut IV 215 is loosened, no meshing force exists between the clamping ring 214 and the connecting sleeve 212, and the traction rod II 213 can rotate in the connecting sleeve 212 to adjust the plane of the connecting assembly I, so that the connecting assembly I can be fixed with the two Kirschner wires.
After the adjusting nut IV 215 is screwed, the clamping ring 214 is meshed with the end face teeth of the connecting sleeve, so that the rotation of the clamping ring 214 and the traction rod II 213 is limited, the traction rod II 213 can be moved outwards by continuously rotating the adjusting nut IV 215, the transverse traction force is applied to the Kirschner wire, and the lateral angulation deformity of the fractured femur can be corrected.
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 Kirschner wire is respectively driven into the front side and the rear side of the distal end of the femur;
2. adjusting the position of the first connecting component on the traction bow and locking, and fixing the two ends of the Kirschner wire on the femur traction mechanism 210;
3. applying appropriate transverse traction force to the two ends of the Kirschner wire by using the femur traction mechanism 210 so as to keep the Kirschner wire in a linear stretching state, and adjusting each angle of the Kirschner wire to promote fracture reduction;
4. performing intramedullary nail implantation operation.
Example nineteen
According to an embodiment of the present disclosure, an annular space is further provided between the inner wall of the outer end of the connecting sleeve 212 and the pulling rod two 213, a spring five 216 is disposed in the annular space, and when the collar 214 is engaged with the connecting sleeve 212, the spring five 216 is in a compressed state.
After the fourth adjusting nut 215 is loosened, the collar 214 can be quickly separated from the connecting sleeve under the action of the fifth spring 216, so that the second pulling rod 213 can be rotated.
Example twenty
In accordance with an embodiment of the present disclosure, as shown in fig. 10, the first connecting assembly includes an adjusting plate 217 and two locking members.
The middle part of the adjusting plate 217 is hinged with the second pulling rod 213, the included angle formed by the adjusting plate 217 and the second pulling rod 213 is adjustable, and an adjusting long hole 2171 is formed in the adjusting plate 217. Two locking members are slidably disposed in the adjustment long hole 2171 and locked, and the locking members are detachably fixed to the end of a corresponding kirschner wire.
The elongated adjustment holes 2171 are adapted to the condition that the two k-wires are not parallel, and the two k-wires are fixed to the adjustment plate 217 by adjusting the positions of the two locking members at each end to adapt to different end distances between the two k-wires.
Example twenty one
According to an embodiment of the present disclosure, the locking member includes a second bolt, a pressing ring 218, and a locking nut. The second bolt is inserted into the long adjustment hole 2171 and is limited in rotation, and the specific form of the limitation in rotation can set the cross section of the second bolt to be non-circular. The pressing ring 218 is sleeved on the second bolt, a second pressing groove 2181 for accommodating the kirschner wire is formed in the end face, facing the adjusting plate 217, of the pressing ring, and the section of the second pressing groove 2181 is arc-shaped or triangular, so that the pressing ring is suitable for extruding and fixing kirschner wires with different diameters. The lock nut is screwed on the second bolt and used for pressing the Kirschner wire between the pressing ring 218 and the adjusting plate 217. The clamping nut is screwed to press the pressing ring 218, so that the end part of the Kirschner wire is pressed in the second pressing groove 2181 between the pressing ring 218 and the adjusting plate 217, and the Kirschner wire is fixed.
Furthermore, the surface of the second pressing groove 2181 and/or the end face of the adjusting plate 217 facing the pressing ring 218 are/is provided with grains for increasing friction force so as to increase the stability of the mounting of the kirschner wire.
Example twenty two
According to an embodiment of the present disclosure, the traction reduction device further includes an adjustment bracket 220. The adjusting frame 220 is used for fixing the traction bow 211 with the thigh bearing surface 2, and the adjusting frame 220 can drive the traction bow 211 to move and lock along the length direction of the thigh bearing surface 2 so as to be fixed with the Kirschner wire at a proper position and pull the Kirschner wire to reduce the fracture; the traction bow 211 can also be driven to swing to adjust the included angle between the traction bow and the thigh bearing surface 2 so as to correct the angulation deformity before and after the fracture of the femur.
Example twenty three
According to an embodiment of the present disclosure, as shown in fig. 11, the adjusting frame 220 comprises two triangular brackets respectively disposed at both sides of the thigh supporting surface 2, each of which is formed by a first rod 221, a second rod 222 and a third rod 223 hinged in sequence.
Wherein the first rod 221 is arranged along the length direction of the thigh support surface 2 and can be moved and locked along the thigh support surface 2 by means of a lifting assembly on the thigh support surface 2. The second rod 222 is arranged on the back of the traction bow 211 and is fixed with the traction bow 211. The third rod 223 is a telescopic rod structure.
The third rod can be specifically sleeved and stretched by adopting a threaded rod of a threaded connection and a screwed pipe with an internal thread, a nut is screwed on the threaded rod and abuts against the end part of the screwed pipe, and the threaded rod can stretch into or stretch out of the screwed pipe by rotating the nut, so that the third rod can stretch out and stretch out.
Through the extension and contraction of the third rod, the second rod can drive the traction bow 211 to swing along the hinged part so as to correct the anterior-posterior angulation deformity of the fractured femur.
Through the lifting of the first rod, the traction bow 211 can be moved to a proper position of a thigh to be fixed with the Kirschner wire, and the Kirschner wire can be pulled to reduce the fracture and recover the length of the femur.
Example twenty-four
According to one embodiment of the present disclosure, the traction bow 211 can slide and lock along the second rod.
Specifically, the second connecting component can comprise a screw rod with a bottom support and a nut, so that the second rod is clamped between the bottom support and the nut, and the traction bow 211 and the second rod can be fixed or can slide by screwing or loosening the nut. Wherein, the bottom support is provided with a groove matched with the second rod, so that the fixation is more stable.
The two ends of the traction bow 211 synchronously move close to or far away from the thigh bearing surface 2, so that the front and back angulation deformity of the broken femur can be corrected. One end of the traction bow 211 moves independently, and the adjustment of the internal rotation and external rotation angles of the fractured femur can be realized.
Example twenty-five
According to an embodiment of the present disclosure, the lifting assembly includes a third screw 224, a top block 225, and a guide block 226.
The third screw 224 is arranged on the side edge of the upper part of the thigh bearing surface 2; the top block 225 is connected to the third screw rod 224 in a sliding mode, and the third screw rod 224 below the top block 225 is connected with a fifth adjusting nut in a threaded mode; the guide block 226 is fixed to the upper end of the third screw 224.
The axial direction of the first rod 221 is provided with a guide groove, the top of the guide groove is communicated with an annular arc-shaped groove 2211, the bottom of the first rod 221 is inserted into the top block 225, the upper end of the first rod 221 movably penetrates through the guide block 226, and the guide block 226 is provided with a slide rod 2261 capable of sliding along the guide groove and the arc-shaped groove 2211.
When the slide bar 2261 on the guide block 226 is positioned in the guide groove, the first bar can only move up and down, and the position of the top block 225 can be adjusted and limited downwards by changing the position of the adjusting nut five on the screw rod three 224. When the first rod is lowered to the lowest position, the sliding rod 2261 on the guide block 226 is located in the arc-shaped groove 2211, and the first rod at this time can rotate inwards, and the adjusting nut is further screwed downwards to separate the top block 225 from the rod, so that the adjusting frame 220 can be accommodated, as shown in fig. 13 and 14. The space occupied by storage is saved, and the storage and the disinfection treatment are convenient.
Because the width of each side receives the restriction of operation table size in the support frame, for making the device can adapt to the obese patient of posture, can arrange the outside of bracing piece 10 in parallel with three 224 screws, fixed through the connecting rod between the both ends of three 224 screws and bracing piece 10, can increase the length of traction bow 211 like this, can be applicable to the patient of different postures, the adaptability is high, and spreading value is big.
Example twenty-six
According to an embodiment of the present disclosure, the traction bow 211 is a split structure, and includes two traction arms 2111 and a connecting arm 2112, the connecting arm 2112 is made of carbon fiber transparent material for easy perspective, and both ends of the connecting arm 2112 are fixed to the ends of the two traction arms 2111 to form an arch structure.
Example twenty-seven
According to an embodiment of the present disclosure, as shown in fig. 12, the connection end of the drawing arm 2111 and the connection arm 2112 has a clamping groove, and a transverse protrusion is provided on the inner wall of the clamping groove, the two ends of the connection arm 2112 are inserted into the corresponding clamping grooves and are engaged with the clamping grooves, and the drawing arm 2111 and the connection arm 2112 are further fixed by screws.
After the fourth adjusting nut 215 is screwed, the fourth adjusting nut 215 extrudes the traction arm 2111 inwards, so that the connection between the traction arm 2111 and the connecting arm 2112 is firmer, and the structure matched with the concave-convex structure is arranged, so that the stress of the connection between the traction arm 2111 and the connecting arm 2112 is concentrated on the concave-convex part, the stress of the wall of the hole of the screw is reduced, the cracking of the connecting arm 2112 is avoided, and the connection is more stable.
Example twenty-eight
According to an embodiment of the present disclosure, a first femur fracture reduction mechanism 230 and a second femur fracture reduction mechanism 240 for correcting lateral femoral angulation, anteroposterior angulation and varus-valgus angulation are also provided on the thigh bearing surface 2, and have the same structure as that on the calf bearing surface 1.
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. A pull resetting means for shin bone fracture coaptation operation, its characterized in that includes:
the support frame is of a triangular structure formed by three surfaces, is provided with a lower leg bearing surface (1) for bearing the lower leg of a patient, and is provided with a supporting part (4) for supporting the knee joint of the patient at the top; and
the tibia traction mechanism (110) is arranged on the calf bearing surface (1) and is used for traction of a Kirschner wire passing through the ankle bone or the distal end of the tibia of a patient; wherein
The tibial distraction mechanism (110) comprises:
the two first sliding blocks (111) are respectively arranged on two sides of the lower leg bearing surface (1), the first sliding blocks (111) are connected to the lower leg bearing surface (1) in a sliding mode along the length direction and can be locked with the support frame through the first locking structures, and through holes perpendicular to the lower leg bearing surface (1) and sliding grooves penetrating through the through holes are formed in the first sliding blocks (111);
the two first quick adjusting blocks (112) are respectively arranged in the two sliding grooves in a sliding manner, each first quick adjusting block (112) is provided with a jack which can be coaxial with the through hole and has a diameter larger than that of the through hole, and the inner wall of each jack is provided with a convex first clamping block;
the two springs I (113) are respectively pressed between the bottom of the sliding chute and the quick adjusting block I (112) and apply outward thrust to the quick adjusting block I (112);
the positioning structure is used for preventing the first quick adjusting block (112) from being separated from the first sliding block (111), and a movement amount for enabling the first quick adjusting block (112) to move inwards to further compress the first spring (113) is reserved;
the diameter of the screw sleeve (114) is matched with that of the through hole, the screw sleeve is inserted into the through hole and the jack, a plurality of circles of sunken clamping grooves I are formed in the outer wall of the screw sleeve (114) at intervals in the axial direction, and under the action of a spring I (113), the screw sleeve (114) and the jack are eccentrically arranged, so that the clamping blocks I are clamped into the clamping grooves I and can slide along the clamping grooves I, and the axial locking of the screw sleeve (114) is realized;
the first screw (115) is in threaded connection with the inside of the threaded sleeve (114), and the upper end of the first screw protrudes out of the threaded sleeve (114);
the driving part is fixed at the lower end of the screw sleeve (114) and is used for driving the screw sleeve (114) to rotate; and
and two ends of the pulling assembly are respectively fixed with the upper ends of the first screw rods (115) and are used for detachably connecting two ends of the Kirschner wire and transversely pulling the Kirschner wire.
2. The distraction reduction device of claim 1, wherein the distraction assembly comprises:
the two first fixing blocks (118) are respectively fixed at the upper ends of the two first screw rods (115), and are provided with through holes along the width direction of the lower leg bearing surface (1);
the two first traction rods (117) are respectively and movably arranged in the through holes of the two first fixed blocks (118) in the axial direction and are limited by rotation, external threads are arranged on the first traction rods (117), and one ends, opposite to the first traction rods (117), of the two first traction rods are detachably fixed with the two ends of the Kirschner wire; and
and the two traction nuts (119) are respectively in threaded connection with the first traction rods (117) and are positioned on the outer sides of the first fixing blocks (118).
3. The distraction restoration device of claim 1,
the shank supporting surface (1) is enclosed by two support rods (10) which are respectively arranged at two sides of the width of the shank supporting surface to form a rectangular frame structure, and two ends of each support rod (10) are connected with the corresponding parts of the other two surfaces;
the first sliding blocks (111) are connected to the supporting rod (10) in a sliding mode, a tibia far-end supporting piece (120) is further arranged between the first sliding blocks (111), and two ends of the tibia far-end supporting piece (120) are pivoted to the back faces of the corresponding first sliding blocks (111).
4. The distraction restoration device of claim 3, wherein the first locking structure comprises:
external threads are arranged on the outer wall of the support rod (10); and
and the adjusting nut I (116) is connected to the support rod (10) in a threaded manner and is fixed with the corresponding slide block I (111) in a rotating manner.
5. The distraction reduction device of claim 3, further comprising a first tibial bone fracture reduction mechanism (120), the first tibial bone fracture reduction mechanism (120) comprising:
the shin bone near-end supporting piece (123) stretches across the calf bearing surface (1), two ends of the shin bone near-end supporting piece can slide and be locked along the axial direction of the supporting rod (1) through the fixing piece (121), and the shin bone near-end supporting piece (123) can be located on the front side and the rear side of the calf bearing surface (1) through the fixing piece (121) and moves and is locked close to the calf bearing surface (1).
6. Traction-reduction device according to claim 5, characterized in that said fixing element (121) is also able to rotate and lock along the support bar (10).
7. Traction-reduction device according to claim 6, characterized in that said fixing element (121) comprises:
a fixed platen (1211);
the movable pressing plate (1212) is arranged in parallel with the fixed pressing plate (1211), and an arc-shaped pressing groove for accommodating the supporting rod (10) is correspondingly arranged on the surface of the fixed pressing plate (1211) opposite to the movable pressing plate (1212);
the first bolt (1213) connects the fixed pressure plate (1211) and the movable pressure plate (1212) and is locked and fixed through a locking nut; and
and the second screw rod (122) is perpendicular to the calf bearing surface (1) and is rotatably fixed on the fixed pressing plate (1211), two ends of the second screw rod (122) extend out of the calf bearing surface (1), and two ends of the tibia near-end supporting piece (123) are provided with threaded holes and are in threaded connection with the second screw rod (122).
8. The distraction reduction device of claim 3, further comprising a second tibial bone fragment reduction mechanism (130), the second tibial bone fragment reduction mechanism (130) comprising:
the at least two lateral jackscrews (131) are respectively arranged at two sides of the shank bearing surface (1), are arranged in parallel with the shank bearing surface (1) and are used for laterally jacking the proximal end of the tibia;
each side jackscrew (131) can move close to or far away from the lower leg bearing surface (1) through a side jacking driving component and is locked, moves along the length direction of the lower leg bearing surface (1) and is locked, and moves axially and is locked.
9. The distraction restoration device of claim 8, wherein the side top drive assembly comprises:
the second sliding block (132) is connected to the supporting rod (10) in a sliding manner, and a through hole vertical to the shank bearing surface (1) and a sliding groove communicated with the through hole are formed in the second sliding block (132);
the second quick adjusting block (133) is slidably arranged in the sliding groove, a jack which can be coaxial with the through hole and has a diameter larger than that of the through hole is formed in the second quick adjusting block (133), a protruding second clamping block (1332) is arranged on the inner wall of the jack, a locking hole (1331) for enabling the supporting rod (10) to movably penetrate through is further formed in the second quick adjusting block (133), and the second quick adjusting block (133) extends out of the sliding groove;
the spring IV (134) is pressed between the bottom of the sliding groove and the quick adjusting block II (133) and applies outward thrust to the quick adjusting block II (133); and
the outer diameter of the inserted rod (135) is matched with that of the through hole, the inserted rod is inserted into the through hole and the through hole, a plurality of rings of concave clamping grooves II are axially arranged on the outer wall of the inserted rod (135) at intervals, and the upper end of the inserted rod (135) is connected with the side jackscrew (131);
under the effect of spring four (134), inserted bar (135) and jack eccentric settings for in the draw-in groove two is blocked to fixture block two, realize the axial locking of inserted bar (135), and locking hole (1331) and bracing piece (10) eccentric settings, make fast adjusting block two (133) support bracing piece (10), realize the position locking of slider two (132).
10. The traction-reduction apparatus according to claim 9, wherein said side-top drive assembly further comprises:
the second fixing block (137) is fixed at the top of the inserted link (135) and is provided with a through hole;
a third adjusting nut (138);
and the side jackscrew (131) is provided with an external thread, the axial direction of the side jackscrew is movably penetrated and arranged on the second fixing block (137) and is limited by rotation, and the third adjusting nut (138) is in threaded connection with the side jackscrew (131) and is positioned on the inner side of the second fixing block (137) and can be abutted against the inner side of the second fixing block (137).
11. The traction-return device according to claim 9, characterized in that the through hole of the second slider (132) has a plurality of radial slots three (1321), and the side wall of the insert rod (135) has a radially projecting positioning fin which can be engaged in any slot three (1321).
12. The traction reduction device of claim 3 wherein the support frame is hinged at both ends and each face is adjustable in length and lockable.
13. Traction-reduction device according to claim 12, characterized in that said support bar (10) is adjustable in length, comprising:
a sleeve member (101);
the rod piece (102) is sleeved with the sleeve piece (101) in a sliding mode; and
an annular lock capable of locking the sleeve member (101) and the rod member (102).
14. The distraction restoration device of claim 13, wherein the annular lock comprises:
the tooth sockets (1021) are arranged on the rod piece (102) at equal intervals in the axial direction, and the tooth sockets (1021) are triangular;
the rotating handle (103) is rotatably fixed at one end of the sleeve piece (101) at one end, the rod piece (102) is sleeved at the other end of the rotating handle, and a notch is formed in the side wall of the rotating handle (103);
the locking block (104) is inserted into the notch, can move radially in the notch and is limited axially and annularly, the locking block (104) can move radially inwards and can be clamped with the tooth groove (1021), and a chamfer is arranged on one side, close to the sleeve piece (101), of the radial outer end of the locking block (104) to form a wedge-shaped surface;
the lock sleeve (105) is sleeved outside the sleeve piece (101) in a sliding mode, an axial annular space is formed between the inner wall of the lock sleeve (105) and the outer wall of the rotating handle (103), a circle of lock groove is formed in the position, corresponding to the lock block (104), on the inner wall of the lock sleeve (105), and the side wall, corresponding to the wedge-shaped face of the lock block (104), of the lock groove is a wedge-shaped pushing face; and
the second spring (106) is arranged in the annular space;
when the lock block (104) moves towards the lock groove, the lock sleeve (105) can be driven to extrude the second spring (106) and is separated from the toothed groove (1021) on the rod piece (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969385.8A CN111956315A (en) | 2020-09-15 | 2020-09-15 | Traction reduction device for tibia fracture coaptation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969385.8A CN111956315A (en) | 2020-09-15 | 2020-09-15 | Traction reduction device for tibia fracture coaptation operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111956315A true CN111956315A (en) | 2020-11-20 |
Family
ID=73393276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010969385.8A Pending CN111956315A (en) | 2020-09-15 | 2020-09-15 | Traction reduction device for tibia fracture coaptation operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111956315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023281324A1 (en) * | 2021-07-08 | 2023-01-12 | Hemitec Finland Oy | Device for intramedullary nailing of the tibia |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105832399A (en) * | 2016-05-27 | 2016-08-10 | 遵义医学院附属医院 | Locating and aligning device aided for traction of appendicular skeleton |
| CN111012467A (en) * | 2019-12-31 | 2020-04-17 | 河北医科大学第三医院 | Automatic traction device for tibia fracture coaptation operation |
| CN111067603A (en) * | 2019-12-31 | 2020-04-28 | 宁德市闽东医院 | Fracture reduction device |
| CN212490115U (en) * | 2020-09-15 | 2021-02-09 | 河北医科大学第三医院 | Traction reduction device for tibia fracture coaptation operation |
-
2020
- 2020-09-15 CN CN202010969385.8A patent/CN111956315A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105832399A (en) * | 2016-05-27 | 2016-08-10 | 遵义医学院附属医院 | Locating and aligning device aided for traction of appendicular skeleton |
| CN111012467A (en) * | 2019-12-31 | 2020-04-17 | 河北医科大学第三医院 | Automatic traction device for tibia fracture coaptation operation |
| CN111067603A (en) * | 2019-12-31 | 2020-04-28 | 宁德市闽东医院 | Fracture reduction device |
| CN212490115U (en) * | 2020-09-15 | 2021-02-09 | 河北医科大学第三医院 | Traction reduction device for tibia fracture coaptation operation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023281324A1 (en) * | 2021-07-08 | 2023-01-12 | Hemitec Finland Oy | Device for intramedullary nailing of the tibia |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8277449B2 (en) | Orthopedic external fixator and method of use | |
| US9066757B2 (en) | Orthopedic external fixator and method of use | |
| US11395680B2 (en) | Lower limb traction device for intramedullary nail implantation operation | |
| CN103445838B (en) | Long bone fracture repositioning device | |
| US11399870B2 (en) | Automatic traction device for lower limb fracture osteosynthesis | |
| CN110537964B (en) | Lower limb traction device for intramedullary nail operation | |
| CN110693587A (en) | Lower limb skeleton resetting device for intramedullary nail operation | |
| CN110897694A (en) | Lower limb resetting device for intramedullary nail operation | |
| CN212490115U (en) | Traction reduction device for tibia fracture coaptation operation | |
| CN203425020U (en) | Long bone fracture restorer | |
| CN111956315A (en) | Traction reduction device for tibia fracture coaptation operation | |
| CN111297465B (en) | Patella fracture resetting guide device | |
| CN111956316A (en) | Traction reduction device for femoral fracture coaptation operation | |
| CN111012467A (en) | Automatic traction device for tibia fracture coaptation operation | |
| CN212490116U (en) | Traction reduction device for femoral fracture coaptation operation | |
| CN214073539U (en) | Traction device for tibial fracture reduction operation | |
| CN213372422U (en) | Front and back reduction device for broken bone in lower limb bone setting operation | |
| CN213372777U (en) | Reduction device for correcting angulation deformity of fractured bones of lower limbs | |
| CN211355807U (en) | Lower limb traction device for intramedullary nail surgery | |
| CN110916794A (en) | Automatic traction device for lower limb fracture setting operation | |
| CN211560322U (en) | Automatic traction device for femoral fracture coaptation operation | |
| CN211560321U (en) | Automatic traction device for lower limb fracture setting operation | |
| CN213525429U (en) | Folding traction frame for femur | |
| CN211583457U (en) | Automatic traction device for tibia fracture coaptation operation | |
| CN213372423U (en) | Lateral reduction device for broken bone in lower limb bone setting operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |