CN116350461A - Orthopedic knee joint spreader - Google Patents
Orthopedic knee joint spreader Download PDFInfo
- Publication number
- CN116350461A CN116350461A CN202310385976.4A CN202310385976A CN116350461A CN 116350461 A CN116350461 A CN 116350461A CN 202310385976 A CN202310385976 A CN 202310385976A CN 116350461 A CN116350461 A CN 116350461A
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- Prior art keywords
- top end
- hinging
- rod
- lifting
- fixedly connected
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 25
- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 210000002414 leg Anatomy 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 210000003127 knee Anatomy 0.000 abstract description 6
- 230000007480 spreading Effects 0.000 abstract description 2
- 206010061213 Iatrogenic injury Diseases 0.000 abstract 1
- 210000001699 lower leg Anatomy 0.000 description 20
- 210000000689 upper leg Anatomy 0.000 description 16
- 210000002303 tibia Anatomy 0.000 description 9
- 230000003028 elevating effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000004439 collateral ligament Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000002967 posterior cruciate ligament Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Images
Classifications
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- 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
- A61G13/128—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with mechanical surface adaptations
- A61G13/1285—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with mechanical surface adaptations having modular surface parts, e.g. being replaceable or turnable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0268—Joint distractors for the knee
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention belongs to the technical field of medical auxiliary instruments, and particularly relates to an orthopedic knee joint spreader which comprises a base, wherein a distance adjusting part is fixedly arranged in the base, two sliding blocks are connected to the distance adjusting part in a threaded manner, the top end of each sliding block is movably connected with a lifting mechanism, the top end of the lifting mechanism is movably connected with a lifting plate, and the top end of the lifting plate is fixedly connected with a leg fixing mechanism; the lifting mechanism comprises a lifting part, the bottom end of the lifting part is movably connected with the top end of the sliding block, the top end of the lifting part is movably connected with the bottom end of the lifting plate, the top end of the sliding block is hinged with a driving part, and the top end of the driving part is hinged with the lifting part. When the spreader disclosed by the invention is used for spreading the knees of a patient, the spreader does not need to be penetrated into the body of the patient, iatrogenic injury to the patient is avoided, the safety and the comfort of the patient in the operation treatment process are improved, the structure is simple, the operation is easy, and the spreader is suitable for popularization.
Description
Technical Field
The invention belongs to the technical field of medical auxiliary instruments, and particularly relates to an orthopedic knee joint spreader.
Background
Knee joints are important load-bearing joints for lower limbs, and have high use rate, large load, and are easy to damage, and when the knee joints are damaged and cannot be recovered, knee joint replacement surgery is required.
The knee joint of human body includes femur and tibia, there are medial collateral ligament, lateral collateral ligament and anterior, posterior cruciate ligament etc. between tibia and femur, there is meniscus on the upper end of tibia, when carrying out knee joint replacement operation, need fix the femoral prosthesis at the lower end of femur, fix the tibial prosthesis at the upper end of tibia, thereby femoral prosthesis cooperates with the tibial prosthesis and forms artificial joint, in order to satisfy normal knee joint operation requirement.
Because the distance between the femur and the tibia is relatively short for the ligament and the muscle, which affects the installation of the femur prosthesis and the tibia prosthesis, especially affects the installation of the tibia prosthesis, when the knee joint replacement operation is performed, the femur and the tibia need to be distracted by using the distractor, so that the femur and the tibia are staggered, and when the knee joint of a patient is distracted by an orthopaedic knee joint mirror joint distractor patent with the publication number of CN108938018A, the sharp puncture needs to be penetrated into the body of the patient, which increases the pain degree of the patient, therefore, the orthopaedic knee joint distractor needs to be designed to solve the problems.
Disclosure of Invention
The invention aims to provide an orthopedic knee joint spreader to solve the problems, so as to achieve the purpose of conveniently spreading the knee of a patient without increasing the pain degree of the patient.
In order to achieve the above object, the present invention provides the following solutions: the orthopedic knee joint spreader comprises a base, wherein a distance adjusting part is fixedly arranged in the base, two sliding blocks are connected with each distance adjusting part in a threaded manner, a lifting mechanism is movably connected to the top end of each sliding block, a lifting plate is movably connected to the top end of each lifting mechanism, and a leg fixing mechanism is fixedly connected to the top end of each lifting plate;
the lifting mechanism comprises a lifting part, the bottom end of the lifting part is movably connected with the top end of the sliding block, the top end of the lifting part is movably connected with the bottom end of the lifting plate, the top end of the sliding block is hinged with a driving part, and the top end of the driving part is hinged with the lifting part.
Preferably, the lifting part comprises a first hinging rod and a second hinging rod, wherein the middle part of the first hinging rod and the middle part of the second hinging rod are hinged through a third hinging shaft, the first hinging rod and the second hinging rod are arranged in a crossing mode, the top end of the first hinging rod is hinged to the side wall end of the lifting plate through a second hinging shaft, the bottom end of the first hinging rod is fixedly connected with a fourth hinging shaft, the fourth hinging shaft rotates and is arranged in a second sliding groove formed in the side wall end of the sliding block in a sliding mode, the top end of the second hinging rod is fixedly connected with a first hinging shaft, the first hinging shaft rotates and is arranged in a first sliding groove formed in the other end of the side wall of the lifting plate in a sliding mode, the bottom end of the second hinging rod is hinged to the other end of the side wall of the sliding block through a fifth hinging shaft, and the top end of the driving part is hinged to the first hinging rod.
Preferably, the driving part comprises an upper connecting seat, the upper connecting seat is fixedly connected with the first hinging rod, the upper connecting seat is hinged with one end of a telescopic rod through a sixth hinging shaft, the other end of the telescopic rod is hinged with a lower connecting seat through a seventh hinging shaft, and the lower connecting seat is fixedly connected with the top end of the sliding block.
Preferably, the leg fixing mechanism comprises a lower fixing block, the bottom end of the lower fixing block is fixedly connected with the top end of the lifting plate, the top end of the lower fixing block is detachably connected with an upper fixing block through a connecting part, a lower semicircular groove is formed in the middle of the top end of the lower fixing block, an upper semicircular groove is formed in the middle of the bottom end of the upper fixing block, and the lower semicircular groove is matched with the upper semicircular groove.
Preferably, the connecting portion is including seting up the screw thread groove has been seted up at lower fixed block both sides wall top, seting up the slot of fixed block top both sides position down, the screw thread groove level sets up, the slot with screw thread groove mutually perpendicular and intercommunication, go up the inserted bar of the vertical setting of fixed block bottom both sides fixedly connected with respectively, the inserted bar slides and inserts and establish in the slot, the screw rod is worn to be equipped with by screw thread groove internal thread, the screw rod with inserted bar threaded connection.
Preferably, the lower semicircular groove is internally fixedly connected with a lower rubber cushion block, and the upper semicircular groove is internally fixedly connected with an upper rubber cushion block.
Preferably, the distance adjusting part comprises a motor, the motor is fixedly connected with the outer side wall of the base, an output shaft of the motor is fixedly connected with one end of a threaded screw rod, the other end of the threaded screw rod is rotationally connected with the base, threads on two sides of the middle part of the threaded screw rod are opposite in rotation direction, and the two sliding blocks are respectively in threaded connection with threads with opposite rotation directions.
Preferably, the two opposite side walls of the sliding block are respectively and fixedly connected with a convex strip, and the convex strips are arranged in the base in a sliding manner.
Compared with the prior art, the invention has the following advantages and technical effects:
according to the leg fixing device, the thighs and the shanks of the patient can be fixed through the leg fixing mechanism, the thighs and the shanks of the patient can be lifted to different heights through the two lifting parts, so that the thighs and the shanks of the patient can be bent at a certain angle, a doctor can conveniently perform operation, the driving part can achieve lifting actions of the lifting parts, after the legs of the patient are lifted, the distance between the two leg fixing mechanisms is adjusted through the distance adjusting mechanism, and the knee of the patient can be unfolded through the distance adjusting mechanism, so that the doctor can conveniently perform subsequent operation.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the elevating mechanism of the present invention;
FIG. 3 is a cross-sectional view of the leg securing mechanism of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3A;
FIG. 5 is a schematic view showing the sliding connection of the slider and the base of the present invention;
FIG. 6 is a schematic view of a two leg fixing mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the overall structure of a second embodiment of the present invention;
fig. 8 is a schematic diagram of a third structure of an embodiment of the present invention.
1, a base; 2. a motor; 3. a threaded lead screw; 4. a slide block; 5. a lifting plate; 6. a lower fixing block; 7. an upper fixing block; 8. a first hinge lever; 9. a second hinge lever; 10. a first chute; 11. a second chute; 12. a telescopic rod; 13. a first hinge shaft; 14. a second hinge shaft; 15. a third hinge shaft; 16. a fourth hinge shaft; 17. a fifth hinge shaft; 18. an upper connecting seat; 19. a sixth hinge shaft; 20. a lower connecting seat; 21. a seventh hinge shaft; 22. a screw; 23. a rubber cushion block is arranged; 24. a lower rubber cushion block; 25. a rod; 26. a thread groove; 27. a slot; 28. a convex strip; 29. a hinge; 30. a threaded rod; 31. a handle; 32. a rubber block; 33. an upper connecting plate; 34. a lower connecting plate; 35. a connecting bolt; 36. a screw cap; 37. a multi-stage telescopic rod; 38. a hinge base; 39. and an eighth hinge shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Embodiment one:
referring to fig. 1-5, the embodiment provides an orthopedic knee joint spreader, which comprises a base 1, wherein a distance adjusting part is fixedly arranged in the base 1, two sliding blocks 4 are connected on the distance adjusting part in a threaded manner, the top end of each sliding block 4 is movably connected with a lifting mechanism, the top end of the lifting mechanism is movably connected with a lifting plate 5, and the top end of the lifting plate 5 is fixedly connected with a leg fixing mechanism;
the elevating system includes elevating system, elevating system bottom and slider 4 top swing joint, elevating system top and lifter plate 5 bottom swing joint, and slider 4 top articulates there is drive division, and drive division top articulates with elevating system.
Can fix patient's thigh and shank through the shank fixed establishment who sets up, two elevating system that set up can lift patient's thigh and shank different heights, make patient's thigh and shank carry out the bending of certain angle, make things convenient for doctor to perform the operation, the drive division that sets up can realize elevating system's lift action, patient's shank lifts up the back, adjust the distance between two shank fixed establishment through the distance adjustment mechanism that sets up, realize strutting patient's knee through the regulation of distance, so that doctor's follow-up operation.
Further optimizing scheme, lifting part includes that the middle part passes through the articulated first articulated lever 8 of third articulated shaft 15, second articulated lever 9, first articulated lever 8, the articulated setting of second articulated lever 9 cross, first articulated lever 8 top passes through second articulated shaft 14 and articulates with lifter plate 5 lateral wall tip, first articulated lever 8 bottom fixedly connected with fourth articulated shaft 16, fourth articulated shaft 16 rotates and slides and set up in the second spout 11 that slider 4 lateral wall tip was seted up, second articulated lever 9 top fixedly connected with first articulated shaft 13, first articulated shaft 13 rotates and slides and set up in the first spout 10 that lifter plate 5 lateral wall other end was seted up, second articulated lever 9 bottom passes through fifth articulated shaft 17 and slider 4 lateral wall other end articulates, the drive part top is articulated with first articulated lever 8.
Further optimizing scheme, the drive part includes connecting seat 18, goes up connecting seat 18 and first articulated rod 8 fixed connection, goes up connecting seat 18 and articulates through sixth articulated shaft 19 and has telescopic link 12 one end, and the telescopic link 12 other end articulates through seventh articulated shaft 21 has lower connecting seat 20, lower connecting seat 20 and slider 4 top fixed connection.
When the lifting plate 5 is required to be adjusted to rise, the telescopic rod 12 is shortened, the bottom end of the first hinging rod 8 is driven to move along the second sliding groove 11 towards the bottom end direction close to the second hinging rod 9, the top end of the first hinging rod 8 rotates around the second hinging shaft 14 in the moving process, the third hinging shaft 15 moves along the same direction in the moving process of the bottom end of the first hinging rod 8 and moves upwards at the same time, the top end of the second hinging rod 9 is driven to move towards the top end of the first hinging rod 8 in the first sliding groove 10, the height of the lifting plate 5 is finally adjusted upwards, and when the height of the lifting plate 5 is required to be reduced, the telescopic rod 12 is extended, and the first hinging rod 8 and the second hinging rod 9 are driven to move towards the opposite direction.
Further optimizing scheme, shank fixed establishment includes fixed block 6 down, and fixed block 6 bottom and lifter plate 5 top fixed connection down, and fixed block 7 can be dismantled through connecting portion and be connected with on the fixed block 6 top down, and lower semicircle recess has been seted up at fixed block 6 top middle part down, and upper semicircle recess has been seted up at fixed block 7 bottom middle part down, lower semicircle recess and upper semicircle recess looks adaptation.
Further optimizing scheme, connecting portion has offered screw thread groove 26 including seting up at lower fixed block 6 both sides wall top, seting up the slot 27 in lower fixed block 6 top both sides position, and screw thread groove 26 level sets up, slot 27 and screw thread groove 26 mutually perpendicular and intercommunication, go up fixed block 7 bottom both sides respectively fixedly connected with vertically setting's inserted bar 25, and inserted bar 25 slides and inserts and establish in slot 27, and screw rod 22 is worn to be equipped with by screw thread groove 26 internal thread, screw rod 22 and inserted bar 25 threaded connection.
The principle of the thigh and shank fixing process of a patient is the same, the shank is taken as an example for explanation, the patient puts the shank in the lower semicircular groove of the lower fixing block 6, then the upper fixing block 7 is butted at the top end of the lower fixing block 6, the inserted link 25 is inserted into the slot 27, then the screw rod 22 is spirally inserted into the thread groove 26, the end part of the screw rod 22 spirally penetrates through the inserted link 25 in the inserting process, and the screw rod 22 is spirally inserted into the thread groove 26 to fix the shank of the patient.
Further optimizing scheme, lower rubber cushion 24 is fixedly connected with in the lower semicircle recess, and upper rubber cushion 23 is fixedly connected with in the upper semicircle recess.
The rubber cushion block has certain elasticity, so that the comfort level of the patient during leg fixation can be improved.
Further optimizing scheme, apart from adjusting part includes motor 2, motor 2 and 1 lateral wall fixed connection of base, motor 2 output shaft fixedly connected with screw thread lead screw 3 one end, screw thread lead screw 3 other end and 1 rotation connection of base, screw thread of screw thread lead screw 3 middle part both sides revolve to opposite directions, and two slider 4 threaded connection respectively on the screw thread that revolves to opposite directions.
When the knee of a patient needs to be opened, the motor 2 works to drive the threaded screw rod 3 to rotate, and in the process of rotating the threaded screw rod 3, threads on two sides of the threaded screw rod 3 taking the middle part as a boundary are reversely rotated, so that two sliding blocks 4 move in opposite directions in the process of rotating the threaded screw rod 3 to drive the lifting plate 5 to move in opposite directions, the knee of the patient is opened, the opening of the opening is adjusted according to the operation requirement, and the treatment effect of the operation is improved.
Further optimizing scheme, the two opposite side walls of slider 4 are fixedly connected with sand grip 28 respectively, and sand grip 28 sliding arrangement is in base 1.
Embodiment two:
referring to fig. 6-7, the difference between the present embodiment and the first embodiment is that the end of the lower fixing block 6 located at the same side as the upper fixing block 7 is hinged by the hinge 29, the end of the lower fixing block 6 located at the other side as the upper fixing block 7 is detachably connected by the locking portion, the locking portion includes an upper connecting plate 33 and a lower connecting plate 34, the upper connecting plate 33 is fixedly connected with the bottom end of the side wall of the upper fixing block 7, the lower connecting plate 34 is fixedly connected with the top end of the side wall of the lower fixing block 6, the upper connecting plate 33 and the lower connecting plate 34 are vertically arranged correspondingly, the upper connecting plate 33 and the lower connecting plate 34 are threaded together, a connecting bolt 35 is threaded, a nut 36 is threaded at the bottom end of the connecting bolt 35, the nut 36 is located at the bottom end of the lower connecting plate 34, when fixing the leg of the patient, the lower fixing block 6 and the upper fixing block 7 are opened, then the leg or thigh of the patient is placed in the lower semicircular groove, the lower fixing block 6 and the upper fixing block 7 are buckled, after buckling, the connecting bolt 35 is screwed into the upper connecting plate 33 and the lower connecting plate 34, and locking by the nut 36.
In this embodiment, go up fixed block 7 still threaded connection and have a plurality of fixed adjustment portions, a plurality of fixed adjustment portions set up along the circumference equidistant of last semicircle recess, fixed adjustment portion includes threaded rod 30, threaded rod 30 and last fixed block 7 threaded connection, the one end fixedly connected with handle 31 of threaded rod 30, handle 31 is located the outside of last fixed block 7, the other end rotation of threaded rod 30 is connected with rubber piece 32, rubber piece 32 is located the inboard of last fixed block 7, because patient's size is different leads to the thickness of shank or thigh different, in order to improve the fixed effect of patient's shank, after the patient puts the shank in the semicircle recess down, adjust threaded rod 30 through handle 31, make rubber piece 32 fix patient's shank, and then improve fixed effect.
In this embodiment, the second chute 11 is not seted up to the lateral wall of slider 4, first spout 10 is not seted up to the lateral wall of lifter plate 5 simultaneously, the bottom of a plurality of multistage telescopic links 37 of top fixedly connected with of slider 4, multistage telescopic link 37 is vertical to be set up, multistage telescopic link 37 top is rotated through eighth articulated shaft 39 and is connected with articulated seat 38, articulated seat 38 and lifter plate 5's bottom fixed connection, set up like this and can adjust lifter plate 5 inclination through the different flexible length of adjusting multistage telescopic link 37, make lifter plate 5 can still laminate with patient's shank after patient's shank is crooked, improve patient's comfort level in the operation treatment process.
Embodiment III:
referring to fig. 8, in the present embodiment, the leg fixing mechanisms at the top end of each lifting plate 5 are provided in two, so that the fixing effect of the legs of the patient can be improved, and adverse effects on the operation process due to unexpected loosening of the legs of the patient in the operation process can be prevented.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The knee joint spreader for orthopaedics is characterized by comprising a base (1), wherein a distance adjusting part is fixedly arranged in the base (1), two sliding blocks (4) are connected to the distance adjusting part in a threaded manner, a lifting mechanism is movably connected to the top end of each sliding block (4), a lifting plate (5) is movably connected to the top end of each lifting mechanism, and a leg fixing mechanism is fixedly connected to the top end of each lifting plate (5);
the lifting mechanism comprises a lifting part, the bottom end of the lifting part is movably connected with the top end of the sliding block (4), the top end of the lifting part is movably connected with the bottom end of the lifting plate (5), the top end of the sliding block (4) is hinged with a driving part, and the top end of the driving part is hinged with the lifting part.
2. The orthopedic knee joint spreader according to claim 1, wherein the lifting part comprises a first hinging rod (8) and a second hinging rod (9) hinged at the middle part through a third hinging shaft (15), the first hinging rod (8) and the second hinging rod (9) are arranged in a crossed manner, the top end of the first hinging rod (8) is hinged with the side wall end part of the lifting plate (5) through a second hinging shaft (14), a fourth hinging shaft (16) is fixedly connected with the bottom end of the first hinging rod (8), the fourth hinging shaft (16) rotates and is arranged in a second sliding groove (11) formed in the side wall end part of the sliding block (4), the top end of the second hinging rod (9) is fixedly connected with a first hinging shaft (13), the first hinging shaft (13) rotates and is arranged in a first sliding groove (10) formed in the other end of the side wall of the lifting plate (5), the bottom end of the second hinging rod (9) is hinged with the other end of the side wall of the sliding block (4) through a fifth hinging shaft (17), and the first hinging part is hinged with the first driving rod (8).
3. The orthopedic knee joint spreader according to claim 2, wherein the driving portion comprises an upper connecting seat (18), the upper connecting seat (18) is fixedly connected with the first hinging rod (8), the upper connecting seat (18) is hinged with one end of a telescopic rod (12) through a sixth hinging shaft (19), the other end of the telescopic rod (12) is hinged with a lower connecting seat (20) through a seventh hinging shaft (21), and the lower connecting seat (20) is fixedly connected with the top end of the sliding block (4).
4. The orthopedic knee joint spreader according to claim 1, wherein the leg fixing mechanism comprises a lower fixing block (6), the bottom end of the lower fixing block (6) is fixedly connected with the top end of the lifting plate (5), an upper fixing block (7) is detachably connected to the top end of the lower fixing block (6) through a connecting portion, a lower semicircular groove is formed in the middle of the top end of the lower fixing block (6), an upper semicircular groove is formed in the middle of the bottom end of the upper fixing block (7), and the lower semicircular groove is matched with the upper semicircular groove.
5. The orthopedic knee joint spreader according to claim 4, wherein the connecting portion comprises a slot (27) formed in the top of two side walls of the lower fixing block (6) and at two sides of the top of the lower fixing block (6), the slot (26) is horizontally arranged, the slot (27) is perpendicular to and communicated with the slot (26), inserting rods (25) are fixedly connected to two sides of the bottom of the upper fixing block (7) respectively, the inserting rods (25) are slidably inserted into the slot (27), a screw rod (22) is threaded in the internal threads of the slot (26), and the screw rod (22) is in threaded connection with the inserting rods (25).
6. The orthopedic knee joint spreader of claim 4, wherein a lower rubber pad (24) is fixedly connected in the lower semicircular groove, and an upper rubber pad (23) is fixedly connected in the upper semicircular groove.
7. The orthopedic knee joint spreader according to claim 1, wherein the distance adjusting part comprises a motor (2), the motor (2) is fixedly connected with the outer side wall of the base (1), an output shaft of the motor (2) is fixedly connected with one end of a threaded screw rod (3), the other end of the threaded screw rod (3) is rotationally connected with the base (1), threads on two sides of the middle part of the threaded screw rod (3) are opposite in rotation direction, and two sliding blocks (4) are respectively in threaded connection with threads with opposite rotation directions.
8. The orthopedic knee joint spreader according to claim 1, wherein two opposite side walls of the slider (4) are respectively fixedly connected with a raised strip (28), and the raised strips (28) are slidably arranged in the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385976.4A CN116350461A (en) | 2023-04-12 | 2023-04-12 | Orthopedic knee joint spreader |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385976.4A CN116350461A (en) | 2023-04-12 | 2023-04-12 | Orthopedic knee joint spreader |
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| CN116350461A true CN116350461A (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310385976.4A Pending CN116350461A (en) | 2023-04-12 | 2023-04-12 | Orthopedic knee joint spreader |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117045368A (en) * | 2023-10-10 | 2023-11-14 | 华中科技大学同济医学院附属协和医院 | Three-dimensional positioning guiding orthopedic operation appliance based on CT image |
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2023
- 2023-04-12 CN CN202310385976.4A patent/CN116350461A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117045368A (en) * | 2023-10-10 | 2023-11-14 | 华中科技大学同济医学院附属协和医院 | Three-dimensional positioning guiding orthopedic operation appliance based on CT image |
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