CN110604626A - Lower limb fixator for total knee joint replacement surgery - Google Patents
Lower limb fixator for total knee joint replacement surgery Download PDFInfo
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- CN110604626A CN110604626A CN201911028731.6A CN201911028731A CN110604626A CN 110604626 A CN110604626 A CN 110604626A CN 201911028731 A CN201911028731 A CN 201911028731A CN 110604626 A CN110604626 A CN 110604626A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/14—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
- A61G13/1245—Knees, upper or lower legs
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Abstract
The invention discloses a lower limb fixator for a total knee joint replacement surgery, which comprises a thigh fixing component, a shank fixing component, two surgery side clamping plates and two non-surgery side clamping plates, wherein the shank fixing component and the thigh fixing component are arranged on an operating table in tandem; the thigh fixing assembly comprises a thigh side fixing frame, a thigh side T-shaped plate, a thigh side guide rail, a thigh side sliding block, a tensioning handle fixing plate, a thigh side tensioning handle and a thigh fixing movable assembly; the shank fixing component comprises a shank side fixing frame and a shank fixing movable component; the shank side fixing frame comprises a shank side transition plate, two connecting side plates, three middle connecting plates and two connecting end plates. The lower limb fixator for the total knee joint replacement surgery is convenient for doctors to stably cut the distal femur and the proximal tibia in the surgery, reduces the risk of bone cutting failure and improves the success rate of the surgery.
Description
Technical Field
The invention relates to a lower limb fixer for total knee joint replacement surgery.
Background
As the population ages more and more, the number of patients suffering from knee osteoarthritis is increasing. In the knee joint diseases, knee joint osteoarthritis caused by the degeneration of the knee joint is a main cause of leg and foot pain of old patients, and seriously influences the physical health and the life quality of people. In knee joint treatment, total knee replacement is one of the more successful surgical methods for treating knee joint diseases, and the surgery requires cutting bones at the far end of femur and the near end of tibia, and then replacing the surfaces of femur and tibia with corresponding prostheses respectively. The guarantee of the flatness of the osteotomy surface is the basis for the accurate installation of the prosthesis.
In the conventional total knee joint replacement operation, a lower limb fixer is not used, an assistant doctor holds thighs and shanks by hands during osteotomy, and a main doctor uses a swinging saw to perform osteotomy, so that the influence on the osteotomy caused by the looseness of the legs of a patient is difficult to avoid.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the lower limb fixator for the total knee joint replacement surgery, which is convenient for a doctor to stably cut the distal femur and the proximal tibia in the surgery, reduces the risk of bone cutting failure and improves the success rate of the surgery.
The technical scheme for realizing the purpose is as follows: the utility model provides a low limbs fixer for total knee joint replacement operation, installs on the operating table, the side is provided with the operating table guardrail respectively about the operating table, the low limbs fixer includes that the thigh fixes subassembly, the fixed subassembly of shank, two operation side cardboards and two non-operation side cardboards, the fixed subassembly of shank and the fixed subassembly of thigh set up in tandem on the operating table, wherein:
the thigh fixing assembly comprises a thigh side fixing frame, a thigh side T-shaped plate, a thigh side guide rail, a thigh side sliding block, a tensioning handle fixing plate, a thigh side tensioning handle and a thigh fixing movable assembly; the thigh side fixing frame comprises a thigh side adjusting plate and a thigh side transition plate, a left-right through connecting hole is formed in the thigh side adjusting plate, the thigh side transition plate is inserted into the connecting hole of the thigh side adjusting plate, the left end of the thigh side transition plate is fixed on an operating table guardrail on the left side through the non-operating side clamping plate, and the right end of the thigh side transition plate is fixed on an operating table guardrail on the right side through the operating side clamping plate; the thigh side T-shaped plate is fixed at the top end of the thigh side adjusting plate through an inner hexagonal cylindrical screw; the thigh side guide rail is vertically arranged at the top end of the thigh side T-shaped plate; the thigh side sliding blocks and the tensioning handle fixing discs are arranged on the left side and the right side of the thigh side guide rails in a one-to-one correspondence manner, and the thigh side sliding blocks are arranged on the thigh side guide rails in a vertically sliding manner; the thigh fixing movable assembly comprises a thigh fixing groove and a fixing groove rotating plate fixed at the bottom of the thigh fixing movable assembly; the center of the thigh side sliding block and the center of the tensioning handle fixing disk are respectively provided with a screw rod mounting hole, the tail end of the thigh side tensioning handle sequentially penetrates through the screw rod mounting hole of the tensioning handle fixing disk and the screw rod mounting hole of the thigh side sliding block and then is connected with the fixed groove rotating plate, and the thigh side tensioning handle drives the fixed groove rotating plate to rotate;
the shank fixing component comprises a shank side fixing frame and a shank fixing movable component; the shank side fixing frame comprises a shank side transition plate, two connecting side plates, three middle connecting plates and two connecting end plates, the two connecting side plates are oppositely arranged from left to right, the two connecting end plates are correspondingly arranged at the front end and the rear end between the two connecting side plates one by one, the three middle connecting plates are sequentially arranged between the two connecting side plates from front to back, the two connecting side plates are respectively provided with connecting holes which are communicated from left to right, the left end of the shank side transition plate sequentially penetrates through the connecting holes on the two connecting side plates, the left end of the shank side transition plate is fixed on an operating table guardrail at the left side through another non-operating side clamping plate, and the right end of the shank side transition plate is fixed on an operating table guardrail at the right side through another operating side clamping plate; a plurality of shank side fixing frame clamping grooves are sequentially formed in the top end of each connecting side plate from front to back, and all the shank side fixing frame clamping grooves on the two connecting side plates are symmetrically arranged; the shank fixing and moving assembly comprises shank fixing grooves, fixing screw rods and tightening handles, the shank fixing grooves are fixed on the fixing screw rods, the left ends and the right ends of the fixing screw rods are clamped in shank side fixing frame clamping grooves which are symmetrically arranged on the two connecting side plates in a one-to-one correspondence mode, and the tightening handles are connected with the right ends of the fixing screw rods.
The lower limb fixator for the total knee joint replacement surgery is characterized in that the two surgery side clamping plates are inserted into the right surgery guardrail in tandem; each operation side clamping plate is fixed on an operation table guardrail on the right side through two operation side jacking handles, and the right end of the thigh side transition plate is fixed on the operation side clamping plate at the rear part through two adjusting screws; the right end of the shank side transition plate is fixed on the operation side clamping plate at the front part through two adjusting screws;
the two non-surgical side clamping plates are inserted in tandem on the left operating table guardrail; the left end of the thigh side transition plate is fixed on the non-operative side clamping plate at the rear part through two non-operative side tensioning handles; the left end of the shank side transition plate is fixed on the front non-operative side clamping plate through two non-operative side tensioning handles.
The lower limb fixator for the total knee joint replacement surgery is characterized in that the surgical side tightening handle, the non-surgical side tightening handle and the thigh side tightening handle are all universal handles, and each universal handle comprises a pentagonal handle and a tightening screw rod connected with the pentagonal handle.
The lower limb fixator for the total knee joint replacement surgery is characterized in that each surgery side clamping plate is provided with two surgery side clamping plate tightening handle holes, and tightening screw rods of the two surgery side tightening handles are inserted into the two surgery side clamping plate tightening handle holes in a one-to-one correspondence manner;
each operation side clamping plate is provided with two adjusting screw holes, the right end of the thigh side transition plate and the right end of the shank side transition plate are respectively provided with two transition plate adjusting screw holes, and the head of each adjusting screw is screwed into the corresponding adjusting screw hole of the operation side clamping plate and then is connected with the corresponding transition plate adjusting screw hole;
each non-operation side clamping plate is provided with two non-operation side clamping plate tensioning handle holes, the left end of the thigh side transition plate and the left end of the shank side transition plate are respectively provided with two non-operation side tensioning handle holes, and the jacking screw of the non-operation side tensioning handle is screwed into the non-operation side clamping plate tensioning handle hole and then is connected with the corresponding non-operation side tensioning handle hole.
The lower limb fixator for total knee joint replacement surgery is characterized in that the jacking screw rod of the thigh-side tensioning handle sequentially passes through the screw rod mounting hole of the tensioning handle fixing disc and the screw rod mounting hole of the thigh-side sliding block and then is connected with the fixing groove rotating plate to form a thigh-side rotating shaft, and the fixing groove rotating plate rotates around the thigh-side rotating shaft; the thigh side guide rail is provided with an upper limit and a lower limit, the up-down sliding stroke of the thigh side sliding block is 198.5mm, and the distance between the thigh side rotating shaft and the upper end face of the operating table at the highest point is 296 mm.
The lower limb fixator for the total knee joint replacement surgery is characterized in that six threaded holes are sequentially formed in the thigh side adjusting plate from front to back, the distance between every two adjacent threaded holes is equal, the thigh side T-shaped plate is locked on the thigh side adjusting plate through two inner hexagonal cylindrical screws, and the two inner hexagonal cylindrical screws are fixed in the two adjacent threaded holes in a one-to-one correspondence mode.
The lower limb fixer for total knee replacement surgery is characterized in that the distance between every two adjacent threaded holes is 60 mm.
The lower limb fixator for the total knee joint replacement surgery is characterized in that a gasket is arranged between the tightening handle and the connecting side plate on the right side of the lower leg side fixing frame, and a knurled treatment layer is arranged on the surface of the gasket.
The lower limb fixator for the total knee joint replacement surgery is characterized in that 13 calf side fixing frame clamping grooves are formed in the top end of each connecting side plate from front to back in sequence, and the distance between every two adjacent calf side fixing frame clamping grooves is equal.
In the lower limb fixator for total knee joint replacement surgery, the distance between every two adjacent calf side fixing frame clamping grooves is 48mm, and the distance between the calf side fixing frame clamping groove at the foremost end and the calf side fixing frame clamping groove at the rearmost end is 624 mm.
Compared with the prior art, the lower limb fixer for total knee replacement surgery has the following advantages:
(1) the lower limb fixator can effectively fix the lower limb, leg looseness caused by insufficient strength or fatigue of an assistant doctor and leg shaking of a patient during osteotomy in a total knee joint replacement operation is avoided, and osteotomy is more stable;
(2) the lower limb fixator can ensure the stability of the lower limbs at a plurality of knee bending angles, so that a doctor can independently select the lower limb bending degree beneficial to operation;
(3) the fixation can be easily released and the lower limbs can be stably fixed again at any time in the operation so as to meet the operation requirement;
(4) the lower limb fixator only occupies relatively small operation space, and can meet the requirement of fixing any lower limb in two lower limbs by adjusting the placing position.
Drawings
FIG. 1 is a side view of a lower limb fixator of the invention for total knee replacement surgery;
FIG. 2 is a top view of a lower limb fixator of the present invention for total knee replacement surgery;
FIG. 3 is a perspective view of the thigh securing assembly;
FIG. 4 is a perspective view of the lower leg attachment assembly;
FIG. 5 is a side view of the surgical side clamp plate;
FIG. 6 is a top view of the surgical side card;
FIG. 7 is a view of the interface of the surgical side clamp plate and the operating table guardrail;
FIG. 8 is a view of the interface of the non-surgical side clamp plate with the operating table fence;
FIG. 9 is a top view of the non-surgical side card;
FIG. 10 is a schematic view of an adjusting screw;
FIG. 11 is a front view of the universal handle;
FIG. 12 is a side view of the universal handle.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 1, 2, 3 and 4, a lower limb fixator for total knee joint replacement surgery according to a preferred embodiment of the present invention is installed on an operating table 7, and operating table guards 3 are respectively provided on left and right sides of the operating table 7. The lower limb fixator for the total knee joint replacement surgery comprises a thigh fixing component 1, a shank fixing component 2, two surgery side clamping plates 36 and two non-surgery side clamping plates 37, wherein the shank fixing component 2 and the thigh fixing component 1 are arranged on an operating table 7 in tandem.
Referring to fig. 3, the thigh fixing assembly includes a thigh side fixing frame 39, a thigh side T-shaped plate 24, a thigh side guide rail 22, a thigh side slider 19, a tightening handle fixing plate 20, a thigh side tightening handle 21, and a thigh fixing movable assembly 40; the thigh side fixing frame 39 comprises a thigh side adjusting plate 25 and a thigh side transition plate 26, a left-right through connecting hole is formed in the thigh side adjusting plate 25, the thigh side transition plate 26 is inserted into the connecting hole of the thigh side adjusting plate 25, the left end of the thigh side transition plate 26 is fixed on the left operating table guardrail 3 through a non-operating side clamping plate 37, and the right end of the thigh side transition plate 26 is fixed on the right operating table guardrail 3 through an operating side clamping plate 36; thigh side T shaped plate 24 is fixed through hexagon socket head cap cylindrical screw 23 on the top of thigh side adjusting plate 25, specifically, six screw holes have set gradually after to in the past on thigh side adjusting plate 25, and the interval between every two adjacent screw holes equals, is 60mm, and thigh side T shaped plate 24 is locked through two hexagon socket head cap cylindrical screws 23 on the thigh side adjusting plate, and two hexagon socket head cap cylindrical screws 23 fix in two adjacent screw holes one-to-one.
The thigh side guide rail 22 is vertically arranged at the top end of the thigh side T-shaped plate 24; the thigh side sliders 19 and the tightening handle fixing disks 20 are provided on the left and right sides of the thigh side guide rails 22 in one-to-one correspondence, and the thigh side sliders 19 are slidably provided on the thigh side guide rails 22 up and down.
The thigh fixing movable assembly 40 includes a thigh fixing groove 17 and a fixing groove rotating plate 18 fixed at the bottom thereof; screw mounting holes are respectively formed in the center of the thigh side sliding block 19 and the center of the tensioning handle fixing disc 20, the tail end of the thigh side tensioning handle 21 sequentially penetrates through the screw mounting hole of the tensioning handle fixing disc 20 and the screw mounting hole of the thigh side sliding block 19 and then is connected with the fixing groove rotating plate 18, and when the thigh side tensioning handle 21 rotates, the fixing groove rotating plate 18 is driven to rotate, and then the thigh fixing groove 17 is driven to rotate.
Referring to fig. 4, the lower leg fixing assembly includes a lower leg side fixing frame 41 and a lower leg fixing movable assembly 42; the shank side fixed frame 41 comprises a shank side transition plate 30, two connecting side plates 43, three middle connecting plates 32 and two connecting end plates 31, the two connecting side plates 43 are oppositely arranged left to right, the two connecting end plates 31 are correspondingly arranged at the front end and the rear end between the two connecting side plates 43 one by one, the three middle connecting plates 32 are sequentially arranged between the two connecting side plates 43 from front to back, the two connecting side plates 43 are respectively provided with connecting holes which are communicated left and right, the left end of the shank side transition plate 30 sequentially passes through the connecting holes on the two connecting side plates 43, the left end of the shank side transition plate 30 is fixed on the left operating table guardrail 3 through another non-operating side clamping plate 37, and the right end of the shank side transition plate 30 is fixed on the right operating table guardrail 3 through another operating side clamping plate 36; a plurality of shank side fixing frame clamping grooves 33 are sequentially formed in the top end of each connecting side plate 43 from front to back, and all shank side fixing frame clamping grooves 33 on the two connecting side plates 43 are symmetrically arranged; the shank fixing and moving assembly 42 comprises a shank fixing groove 27, a fixing screw 28 and a tightening handle 29, the shank fixing groove 27 is fixed on the fixing screw 28, the left end and the right end of the fixing screw 28 are correspondingly clamped in symmetrically arranged shank side fixing frame clamping grooves 33 on two connecting side plates 43, and the tightening handle 29 is connected with the right end of the fixing screw 28.
A gasket is provided between the tightening handle 29 and the right side connecting side plate 43 of the lower leg side fixing frame 41, and the surface of the gasket is provided with a knurled layer, the actual friction coefficient of which is greater than 0.15. When in fixation, the handle 29 is screwed by taking the fixed screw 28 as an axis, and the shank can be fed by 2.625mm after being rotated by 180 degrees, thereby ensuring that the shank fixed movable assembly 42 can be locked when the operating table 7 is rotated by 180 degrees in the length direction.
The plurality of calf side fixing frame slots in the fore-and-aft direction of the calf side fixing frame 41 can be used for placing the calf fixed movable assembly 42, and the structure can meet the requirement that the calf fixed movable assembly 42 moves and adjusts along the fore-and-aft direction of the operating table 7. Specifically, 13 calf side fixing frame clamping grooves 33 are sequentially formed in the top end of each connecting side plate 43 from front to back, the distance between every two adjacent calf side fixing frame clamping grooves 33 is equal and is 48mm, and the distance between the calf side fixing frame clamping groove at the foremost end and the calf side fixing frame clamping groove at the rearmost end is 624 mm. Thus, the lower leg fixed movable assembly 42 can move 13 steps in the front-back direction of the operating table 7, 48mm each time, and 624mm as the maximum adjustment range.
Referring again to fig. 5 to 12, two surgical side clamping plates 36 are inserted one behind the other on the right operating table rail 3; each operation side clamping plate 36 is fixed on the right operation table guardrail 3 through two operation side jacking handles 4, and the right end of the thigh side transition plate 26 is fixed on the rear operation side clamping plate 36 through two adjusting screws 13; the right end of the calf-side transition plate 30 is fixed to the anterior surgical side clamp plate 36 by two adjusting screws 13.
Two non-surgical side clamping plates 37 are inserted in tandem on the left operating table rail 3; the left end of the thigh side transition plate 26 is fixed on the rear non-operation side clamping plate 37 through two non-operation side tightening handles 12; the left end of the calf side transition plate 30 is secured to the anterior non-operative side snap plate 37 by two non-operative side tensioning handles 12.
Referring to fig. 7, the surgical side fastener plate 36 is in contact with the contact surface 8 of the right operating table rail 3, and referring to fig. 8, the non-surgical side fastener plate 37 is in contact with the contact surface 11 of the left operating table rail 3.
Referring to fig. 11 and 12, the operation side tightening handle 4, the non-operation side tightening handle 12 and the thigh side tightening handle 21 are all universal handles 38, and the universal handles 38 are composed of a pentagonal handle 15 and a tightening screw 16 connected with the pentagonal handle. The outer diameter of the part of the pentagonal handshake 15 is 63 mm.
Each operation side clamping plate 36 is provided with two operation side clamping plate tightening handle holes 10, and tightening screw rods of the two operation side tightening handles 4 are inserted into the two operation side clamping plate tightening handle holes 10 in a one-to-one correspondence manner; each operation side clamping plate 36 is provided with two adjusting screw holes 9, the right end of the thigh side transition plate 26 and the right end of the shank side transition plate 30 are respectively provided with two transition plate adjusting screw holes 34, and the head 14 of the adjusting screw 13 is screwed into the adjusting screw hole 9 of the corresponding operation side clamping plate 36 and then is connected with the corresponding transition plate adjusting screw hole 34.
Each non-operation side clamping plate 37 is provided with two non-operation side clamping plate tensioning handle holes 12, the left end of the thigh side transition plate 26 and the left end of the shank side transition plate 30 are respectively provided with two non-operation side tensioning handle holes 35, and the jacking screw 16 of the non-operation side tensioning handle 12 is screwed into the non-operation side clamping plate tensioning handle holes 12 and then is connected with the corresponding non-operation side tensioning handle holes 35.
Referring to fig. 3 again, the tightening screw 16 of the thigh-side tightening handle 21 sequentially passes through the screw mounting hole of the tightening handle fixing plate 20 and the screw mounting hole of the thigh-side slider 19 and then is connected to the middle of the fixing groove rotating plate 18 to form a thigh-side rotating shaft, and the fixing groove rotating plate 18 rotates around the thigh-side rotating shaft; the thigh side guide rail 22 is provided with an upper limit and a lower limit, the thigh sideslips, the stroke of the up-down sliding of the thigh side guide rail 19 is 198.5mm, and the distance between the thigh side rotating shaft and the upper end face of the operating table 7 at the highest point is 296 mm.
The lower limb fixer for total knee replacement surgery of the invention has the following use process:
1. when the thigh fixing component 1 is installed in the operation process, (1) firstly, an operation side clamping plate 36 is inserted along an operation table guardrail 3, the operation side clamping plate 36 is fixed on the right operation table guardrail 3 through an operation side jacking handle 4, then, the head 14 of an adjusting screw 13 is screwed into an adjusting screw hole 9 of the operation side clamping plate 36, a transition plate adjusting screw hole 34 of a thigh side fixing frame 39 is sleeved into the adjusting screw 13, and the operation side tightening handle 5 is screwed to fix the thigh side fixing frame 39 and the adjusting screw 13; the application of the adjusting screw 13 can counteract the influence caused by the dimension error of the operating table 7 in the height direction;
(2) then, the non-operative side clamping plate 37 is arranged on the left operating table guardrail 3, the non-operative side tensioning handle 6 penetrates through the non-operative side tensioning handle hole 35 of the thigh side fixing frame 39, the non-operative side clamping plate 37 is also fixed on the operating table guardrail 3, and at the moment, the thigh fixing component 1 is fixed with the operating table 7; the handle hole 35 is tightened at the non-operation side, so that the influence caused by the dimension error of the width direction of the operating table 7 can be counteracted;
(3) lifting the thigh of the patient, putting the thigh of the patient into a thigh fixing groove 17 of the thigh fixing component 1, and tightly binding the thigh of the patient with the thigh fixing groove 17 by using a bandage;
(4) then, the thigh side sliding block 19 is moved to adjust the height of the thigh, and the proper placing angle of the thigh is obtained by rotating the thigh fixing groove 17;
(5) the thigh side movable assembly can be fixed by tightening the thigh side tightening handle 21, so that the adjusted height and inclination angle are kept;
(6) in the operation process, if the front and rear positions of thighs need to be adjusted, the inner hexagonal cylindrical screws 23 on the 2 thigh side adjusting plates 25 are loosened, and then the thigh side T-shaped plate 24 is moved to a proper position to be locked;
(7) if the height and the inclination angle of the thigh need to be adjusted in the operation process, the thigh side tightening handle 21 is loosened, and the thigh side tightening handle is adjusted to the proper height and the proper inclination angle and then tightened.
2. When the shank fixing component 2 is installed in the operation process, (1) firstly, the operation side clamping plate 36 is inserted into the operation table guardrail 3, the operation side clamping plate 36 is fixed on the right operation table guardrail 3 through the operation side jacking handle 4, then, the head 14 of the adjusting screw 13 is screwed into the adjusting screw hole 9 of the operation side clamping plate 36, the shank side fixing frame 41 is sleeved into the transition plate adjusting screw hole 34, the adjusting screw 13 is adjusted, and the operation side tightening handle 5 is screwed to fix the shank side fixing frame 41 and the adjusting screw 13; the application of the adjusting screw 13 can counteract the influence caused by the dimension error of the operating table 7 in the height direction;
(2) the non-operation side clamping plate 37 is arranged on the operating table guardrail 3 on the left side (namely, the non-operation side), the non-operation side tensioning handle 6 penetrates through the non-operation side tensioning handle hole 35 of the shank side fixing frame 41, the non-operation side clamping plate 37 is also fixed on the operating table guardrail 3, and at the moment, the shank fixing component 2 is fixed with the operating table 7;
(3) lifting the lower leg of the patient, putting the lower leg of the patient into a lower leg fixing groove 27 of the lower leg fixing component 2, and tightly binding the lower leg, the sole and the lower leg fixing groove 27 of the patient by using bandages;
(4) a doctor puts the shank fixing component 2 together with the patient's shank into the shank side fixing frame clamping groove 33, and rotates and screws the handle 29 to fix the patient's shank;
(5) in the operation process, if the lower leg of the patient needs to be moved along the front-back direction of the operating table 7, the handle 29 is only required to be screwed down, and the lower leg fixing movable part is placed into different lower leg side fixing frame clamping grooves 33.
3. The osteotomy procedure of the total knee replacement can then be performed with the lower limb immobilized.
The lower limb fixator for the total knee joint replacement surgery can meet the fixation of the left leg and the right leg by adjusting the placing positions of the components.
In conclusion, the lower limb fixator for the total knee joint replacement surgery is convenient for doctors to stably cut the distal femur and the proximal tibia in the surgery, reduces the risk of bone cutting failure and improves the success rate of the surgery.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a low limbs fixer for total knee joint replacement operation installs on the operating table, the side is provided with the operating table guardrail respectively about the operating table, a serial communication port, the low limbs fixer includes that the thigh fixes subassembly, the fixed subassembly of shank, two operation side cardboard and two non-operation side cardboards, the subassembly is fixed with the thigh to the shank and the subassembly is fixed to the thigh sets up in tandem on the operating table, wherein:
the thigh fixing assembly comprises a thigh side fixing frame, a thigh side T-shaped plate, a thigh side guide rail, a thigh side sliding block, a tensioning handle fixing plate, a thigh side tensioning handle and a thigh fixing movable assembly; the thigh side fixing frame comprises a thigh side adjusting plate and a thigh side transition plate, a left-right through connecting hole is formed in the thigh side adjusting plate, the thigh side transition plate is inserted into the connecting hole of the thigh side adjusting plate, the left end of the thigh side transition plate is fixed on an operating table guardrail on the left side through the non-operating side clamping plate, and the right end of the thigh side transition plate is fixed on an operating table guardrail on the right side through the operating side clamping plate; the thigh side T-shaped plate is fixed at the top end of the thigh side adjusting plate through an inner hexagonal cylindrical screw; the thigh side guide rail is vertically arranged at the top end of the thigh side T-shaped plate; the thigh side sliding blocks and the tensioning handle fixing discs are arranged on the left side and the right side of the thigh side guide rails in a one-to-one correspondence manner, and the thigh side sliding blocks are arranged on the thigh side guide rails in a vertically sliding manner; the thigh fixing movable assembly comprises a thigh fixing groove and a fixing groove rotating plate fixed at the bottom of the thigh fixing movable assembly; the center of the thigh side sliding block and the center of the tensioning handle fixing disk are respectively provided with a screw rod mounting hole, the tail end of the thigh side tensioning handle sequentially penetrates through the screw rod mounting hole of the tensioning handle fixing disk and the screw rod mounting hole of the thigh side sliding block and then is connected with the fixed groove rotating plate, and the thigh side tensioning handle drives the fixed groove rotating plate to rotate;
the shank fixing component comprises a shank side fixing frame and a shank fixing movable component; the shank side fixing frame comprises a shank side transition plate, two connecting side plates, three middle connecting plates and two connecting end plates, the two connecting side plates are oppositely arranged from left to right, the two connecting end plates are correspondingly arranged at the front end and the rear end between the two connecting side plates one by one, the three middle connecting plates are sequentially arranged between the two connecting side plates from front to back, the two connecting side plates are respectively provided with connecting holes which are communicated from left to right, the left end of the shank side transition plate sequentially penetrates through the connecting holes on the two connecting side plates, the left end of the shank side transition plate is fixed on an operating table guardrail at the left side through another non-operating side clamping plate, and the right end of the shank side transition plate is fixed on an operating table guardrail at the right side through another operating side clamping plate; a plurality of shank side fixing frame clamping grooves are sequentially formed in the top end of each connecting side plate from front to back, and all the shank side fixing frame clamping grooves on the two connecting side plates are symmetrically arranged; the shank fixing and moving assembly comprises shank fixing grooves, fixing screw rods and tightening handles, the shank fixing grooves are fixed on the fixing screw rods, the left ends and the right ends of the fixing screw rods are clamped in shank side fixing frame clamping grooves which are symmetrically arranged on the two connecting side plates in a one-to-one correspondence mode, and the tightening handles are connected with the right ends of the fixing screw rods.
2. The lower limb fixator for total knee replacement surgery of claim 1, wherein the two surgical side clamping plates are inserted in tandem on the right surgical table guardrail; each operation side clamping plate is fixed on an operation table guardrail on the right side through two operation side jacking handles, and the right end of the thigh side transition plate is fixed on the operation side clamping plate at the rear part through two adjusting screws; the right end of the shank side transition plate is fixed on the operation side clamping plate at the front part through two adjusting screws;
the two non-surgical side clamping plates are inserted in tandem on the left operating table guardrail; the left end of the thigh side transition plate is fixed on the non-operative side clamping plate at the rear part through two non-operative side tensioning handles; the left end of the shank side transition plate is fixed on the front non-operative side clamping plate through two non-operative side tensioning handles.
3. The lower limb fixator for total knee replacement surgery according to claim 2, wherein the surgical side tightening handle, the non-surgical side tightening handle and the thigh side tightening handle are all universal handles, and the universal handles comprise pentagonal handles and tightening screws connected with the pentagonal handles.
4. The lower limb fixator for total knee replacement surgery according to claim 3, wherein each surgical side clamping plate is provided with two surgical side clamping plate tightening handle holes, and tightening screw rods of the two surgical side tightening handles are inserted into the two surgical side clamping plate tightening handle holes in a one-to-one correspondence manner;
each operation side clamping plate is provided with two adjusting screw holes, the right end of the thigh side transition plate and the right end of the shank side transition plate are respectively provided with two transition plate adjusting screw holes, and the head of each adjusting screw is screwed into the corresponding adjusting screw hole of the operation side clamping plate and then is connected with the corresponding transition plate adjusting screw hole;
each non-operation side clamping plate is provided with two non-operation side clamping plate tensioning handle holes, the left end of the thigh side transition plate and the left end of the shank side transition plate are respectively provided with two non-operation side tensioning handle holes, and the jacking screw of the non-operation side tensioning handle is screwed into the non-operation side clamping plate tensioning handle hole and then is connected with the corresponding non-operation side tensioning handle hole.
5. The lower limb fixator for total knee replacement surgery according to claim 4, wherein the tightening screw of the thigh-side tightening handle passes through the screw mounting hole of the tightening handle fixing plate and the screw mounting hole of the thigh-side slider in sequence and then is connected with the fixing groove rotating plate to form a thigh-side rotating shaft, and the fixing groove rotating plate rotates around the thigh-side rotating shaft; the thigh side guide rail is provided with an upper limit and a lower limit, the up-down sliding stroke of the thigh side sliding block is 198.5mm, and the distance between the thigh side rotating shaft and the upper end face of the operating table at the highest point is 296 mm.
6. The lower limb fixator for total knee replacement surgery as claimed in claim 1, wherein six threaded holes are sequentially formed in the thigh side adjusting plate from front to back, the interval between every two adjacent threaded holes is equal, the thigh side T-shaped plate is locked to the thigh side adjusting plate by two hexagon socket head cap screws, and the two hexagon socket head cap screws are fixed in the two adjacent threaded holes in a one-to-one correspondence.
7. The lower limb fixator for total knee replacement surgery of claim 6, wherein the distance between every two adjacent threaded holes is 60 mm.
8. The lower limb fixator for total knee replacement surgery as claimed in claim 1, wherein a spacer is provided between the tightening handle and the right side connecting side plate of the lower leg side fixing frame, and a surface of the spacer is provided with a knurled treatment layer.
9. The lower limb fixator for total knee replacement surgery according to claim 1, wherein 13 calf side fixing frame clamping grooves are formed in the top end of each connecting side plate from front to back in sequence, and the distance between every two adjacent calf side fixing frame clamping grooves is equal.
10. The lower limb fixator for total knee replacement surgery of claim 9, wherein the distance between every two adjacent calf side fixator slots is 48mm, and the distance between the foremost calf side fixator slot and the rearmost calf side fixator slot is 624 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028731.6A CN110604626A (en) | 2019-10-28 | 2019-10-28 | Lower limb fixator for total knee joint replacement surgery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028731.6A CN110604626A (en) | 2019-10-28 | 2019-10-28 | Lower limb fixator for total knee joint replacement surgery |
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| Publication Number | Publication Date |
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| CN110604626A true CN110604626A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911028731.6A Pending CN110604626A (en) | 2019-10-28 | 2019-10-28 | Lower limb fixator for total knee joint replacement surgery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558919A (en) * | 2021-08-03 | 2021-10-29 | 山东中医药大学附属医院 | Knee joint replacement operation is with auxiliary device that bends knee |
| CN114917107A (en) * | 2022-05-30 | 2022-08-19 | 苏州微创畅行机器人有限公司 | Lower limb fixator |
-
2019
- 2019-10-28 CN CN201911028731.6A patent/CN110604626A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558919A (en) * | 2021-08-03 | 2021-10-29 | 山东中医药大学附属医院 | Knee joint replacement operation is with auxiliary device that bends knee |
| CN114917107A (en) * | 2022-05-30 | 2022-08-19 | 苏州微创畅行机器人有限公司 | Lower limb fixator |
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Effective date of registration: 20230116 Address after: 215000 some areas of No.3 Factory building, 151 Fengli street, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant after: Suzhou Xiaowei Changxing robot Co.,Ltd. Address before: 200011 No. 639, manufacturing Bureau Road, Shanghai, Huangpu District Applicant before: SHANGHAI NINTH PEOPLE'S HOSPITAL SHANGHAI JIAOTONG University SCHOOL OF MEDICINE |