CN111789680B - Angle device turns up - Google Patents
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- CN111789680B CN111789680B CN202010624444.8A CN202010624444A CN111789680B CN 111789680 B CN111789680 B CN 111789680B CN 202010624444 A CN202010624444 A CN 202010624444A CN 111789680 B CN111789680 B CN 111789680B
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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
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/155—Cutting femur
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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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
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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
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/067—Measuring instruments not otherwise provided for for measuring angles
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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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3904—Markers, e.g. radio-opaque or breast lesions markers specially adapted for marking specified tissue
- A61B2090/3916—Bone tissue
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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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
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Abstract
The invention discloses an eversion angle device, which comprises an intramedullary rod, wherein a sleeve is arranged in the middle of the intramedullary rod, a lock catch is arranged at the upper part of the sleeve, elongated slots are arranged at two sides of the intramedullary rod, a plurality of first shallow slots are arranged in the elongated slots, a circular deep slot is arranged at the position, corresponding to the elongated slots, of the upper end of the sleeve, a bowl-shaped large slot is arranged at the position, corresponding to the circular deep slot, of the lock catch, a first ball is arranged in a space formed by the first shallow slots, the circular deep slot and the bowl-shaped large slot, the angle adjusting structure and a far-end guide mechanism are connected through a guide rod, a bone cutting module is arranged at the lower end of the far-end; the extension length of the intramedullary rod is accurately controlled, the angle of the valgus angle of the distal end of the femur can be accurately positioned and determined, and the osteotomy module can accurately rotate and is in fit contact with the inner side and the outer side of the anterior condyle of the femur, so that the osteotomy accuracy is improved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an eversion angle device for orthopedic surgery.
Background
With the continuous development of medical technology, the artificial knee joint replacement operation has become one of the conventional treatment methods for treating knee joint pathological changes, and the clinical yield of over 10 years is more than 90% according to statistics. In the artificial knee joint replacement, firstly, the distal femur needs to be cut, a distal femur platform for installing the artificial prosthesis is obtained, and the eversion osteotomy angle of the patient is determined before the osteotomy so as to determine the mechanical axis alignment for installing the prosthesis. The currently adopted method is an intramedullary positioning method, namely, an intramedullary rod is inserted into a femoral bone marrow cavity, and a doctor adjusts an eversion angle instrument according to clinical experience and matches with a bone cutting module to perform distal femoral bone cutting according to measurement data of preoperative X-ray fluoroscopy and judgment of intraoperative bone position.
The present distal femur osteotomy device has some defects:
firstly, the bone cutting angle in the operation is difficult to adjust, and the angle cannot be accurately adjusted, so that the bone cutting platform is not accurate, and the implantation of the prosthesis is influenced to a certain extent;
secondly, the insertion depth of the intramedullary stem cannot be fixed in advance, so that the far end valgus angle of the femur cannot be accurately positioned and determined, the deviation of the mechanical axis of the prosthesis to the line is caused, the abrasion rate of a prosthesis gasket is accelerated, and the long service life of the prosthesis is influenced;
thirdly, because the common tangent plane formed between the anterior condyle and the medial-lateral tangent points of the femur has a certain slope and is not a complete plane, after the valgus angle and the osteotomy height are determined, the osteotomy module can not completely contact the medial-lateral side of the anterior condyle of the femur, and the osteotomy angle has a certain error.
The eversion angle gauge has the advantages that the osteotomy parameters can be accurately adjusted, the guidance performance is good, the operation is simple, and the disassembly, cleaning and disinfection can be realized, so that the eversion angle gauge is convenient for doctors to use as much as possible, and the secondary injury to patients is reduced.
Disclosure of Invention
The invention aims to provide an eversion angle gauge to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the valgus angle device comprises an intramedullary rod, wherein the intramedullary rod is of a long rod-shaped structure provided with scales and is used for inserting bone marrow in a femur osteotomy process, a sleeve is arranged in the middle of the intramedullary rod and is sleeved on the intramedullary rod, the intramedullary rod and the intramedullary rod can slide mutually, a lock catch is arranged on the upper part of the sleeve and is sleeved on the sleeve, elongated slots are arranged on two sides of the intramedullary rod, certain gaps are formed between the intramedullary rod and the sleeve due to the elongated slots, a plurality of shallow slots are arranged in the elongated slots, the shallow slots are arranged in the elongated slots at equal intervals, a circular deep slot is arranged at the corresponding position of the sleeve upper end and the elongated slot, a bowl-shaped large slot is arranged at the corresponding position of the lock catch and the circular deep slot, a ball body is arranged in a space formed by the shallow slot, the circular deep slot and the bowl-shaped large slot, and the ball body is relatively fixed in the circular deep, the sleeve can roll in the circular deep groove, the bowl-shaped large groove and the first shallow groove have certain interference effect on the first ball body, so that the first ball body is relatively and stably fixed in a space formed by the first shallow groove, the circular deep groove and the bowl-shaped large groove when no external force acts, the interference effect of the bowl-shaped large groove on the first ball body disappears, the intramedullary rod is pressed downwards, the first ball body rolls into the next first shallow groove, the pressing height of the intramedullary rod is the distance between the two first shallow grooves, one side of the sleeve is provided with an angle adjusting structure, the angle adjusting structure is used for accurately positioning the angle of the valgus angle of the distal end of the femur, the other side of the angle adjusting structure is provided with a distal end guide mechanism, the distal end guide mechanism is used for accurately positioning the height of the osteotomy of the femur, and the angle adjusting structure is connected with the distal end guide mechanism through a guide rod, the lower end of the far-end guide mechanism is provided with a bone cutting module, the bone cutting module is used for determining the position of femoral bone cutting, and a limiting groove is formed in the upper portion of the bone cutting module.
Preferably, the sleeve is connected with the lock catch through a first pin, anti-skidding grooves are formed in one sides of the upper ends of the sleeve and the lock catch, an elastic arm is further arranged at the lower end of the lock catch, when no external force is applied, the upper end of the elastic arm has a certain interference effect on the sleeve, a certain interference effect is formed between the first ball and the bowl-shaped large groove, the first ball is relatively fixed, when the anti-skidding grooves are pressed manually, the interference effect between the upper end of the elastic arm and the sleeve is transferred to the lower end of the elastic arm, the interference effect between the first ball and the bowl-shaped large groove disappears, the intramedullary rod can be pressed downwards, and the first ball is driven to roll in the long groove.
Preferably, the angle adjusting structure includes angle twisting disc, setting element, elasticity casting die, fixed plate, the setting element is located the middle part of intramedullary rod, the setting element cup joints on the sleeve, the setting element includes vertical commentaries on classics piece and flat platform seat, vertical commentaries on classics piece and intramedullary rod are in same vertical direction, flat platform seat is perpendicular with vertical commentaries on classics piece, flat platform seat is fixed in on the distal end platform of thighbone, the angle twisting disc is located vertical commentaries on classics piece one side, the fixed plate is located between vertical commentaries on classics piece and the sleeve, vertical commentaries on classics piece, fixed plate and angle twisting disc mutually support, can drive the setting element and rotate certain angle to this angle of confirming the distal end angle of turning out of thighbone, the elasticity casting die is located flat platform seat one side, the elasticity casting die is roll-like elastomer, when the setting element rotates certain angle, elasticity casting die elastic deformation produces elasticity, with pivoted angle between, this angle is the angle of the distal valgus angle of the femur.
Preferably, one side of the vertical rotating part and one side of the angle twisting disc are provided with elastic arm grooves, the elastic arm grooves comprise long-strip-shaped grooves and elastic arms, one end of each elastic arm is fixed on the vertical rotating part, one side of the angle twisting disc and one side of the vertical rotating part are provided with a plurality of second shallow grooves, the plurality of second shallow grooves are arranged in a circle of the angle twisting disc at equal intervals, a second ball body is arranged between the top end of each elastic arm groove and the corresponding second shallow grooves, one side of the vertical rotating part is also provided with a bent hole, a first annular groove is arranged at a position on the angle twisting disc corresponding to the bent hole, a first guide column is arranged at a position on the fixing plate corresponding to the bent hole, the first guide column penetrates through the bent hole into the first annular groove, the elastic arm grooves have certain interference effect on the second ball body, and when no external force is applied, the interference effect of the elastic arm grooves on the second ball body enables the positions of the second ball body and the second shallow grooves to be, when the angle twisting disc is manually rotated, the first guide column is fixed, the first annular groove and the bent hole are mutually deviated under the action of the first guide column, the angle twisting disc further drives the vertical rotating piece to be deviated, when the first spherical body is deviated to enter the next second shallow groove, the deviation is the angle between the two second shallow grooves, the angle of the far-end valgus angle of the femur can be accurately determined, the middle of the platform seat is provided with a waist-shaped hole, the intramedullary rod and the sleeve penetrate into the waist-shaped hole, the waist-shaped hole can provide a deviation space between the platform seat and the intramedullary rod, the sleeve is connected with the platform seat through a cylindrical pin, the sleeve is rotatably connected with the platform seat, one side of the platform seat is also provided with a pressure hole, one end of the elastic pressing piece is connected with the cylindrical pin, the elastic pressing piece is fixedly connected with the cylindrical pin, the other end of the elastic pressing piece is inserted into the pressure hole, and when the angle of the far, the elastic pressing piece is manually shifted to disconnect one end of the elastic pressing piece from the pressing hole, and after the angle adjustment of the eversion angle of the distal end of the femur is completed, the elastic pressing piece is manually shifted to insert one end of the elastic pressing piece into the pressing hole so as to fix the rotating angle between the platform seat and the sleeve.
Preferably, the angle twisting disc is provided with angle scales used for determining the angle of the eversion angle of the distal end of the femur, the elastic pressing piece is fixedly connected with the sleeve, the platform base is rotatably connected with the sleeve, and the fixing plate is fixedly connected with the sleeve.
Preferably, distal end guiding mechanism includes fixed block, guide block, connecting block, altitude mixture control carousel, the fixed block is located angle modulation structure one side, the fixed block is driven by the guide bar and also rotates certain angle, guide block and connecting block are located the fixed block and keep away from one side of angle modulation structure, guide block and connecting block can reciprocate for drive osteotomy module up-and-down motion, with this degree of depth of confirming the osteotomy, the altitude mixture control carousel is located one side that guide block and connecting block kept away from the fixed block, be provided with the altitude scale on the altitude mixture control carousel, when the altitude mixture control carousel rotated under the exogenic action, can drive guide block and connecting block and reciprocate.
Preferably, the guide block middle part is provided with vertical hole, the one end that the fixed block is close to the guide block is provided with the guide post No. two, the one end that the altitude mixture control carousel is close to the guide block is provided with the annular No. two, No. two guide posts pass vertical hole and insert in the annular No. two, the one end lower part that the guide block is close the altitude mixture control carousel is provided with the spheroid No. three, the one end that the altitude mixture control carousel is close to the guide block is provided with a plurality of shallow slots No. three, No. three spheroid and No. three shallow slot are corresponding, when rotating the altitude mixture control carousel, No. two guide posts are along with the fixed block is motionless, and skew about No. two annular and vertical hole take place each other under the rotation, and then drive the guide block and reciprocate, drive the connecting block.
Preferably, guide block upper end, fixed block and cut and connect through the spliced pole between the bone module, spliced pole and guide block, cut bone module fixed connection, spliced pole and fixed block sliding connection, guide block and connecting block pass through pin fixed connection, guide block and altitude mixture control carousel rotate to be connected, the connecting block lower extreme is provided with the barb, the barb articulates on cutting the bone module, can drive when the connecting block reciprocates and cut the bone module and reciprocate.
Preferably, the position that guide block lower extreme and spacing groove correspond is provided with the stopper, stopper and spacing groove are corresponding, can finely adjust the angle of cutting the bone module.
Preferably, the guide rod passes through the platform seat, and the guide rod is fixedly connected with the fixing block.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the valgus angle gauge disclosed by the invention, the pressing height of the intramedullary rod can be accurately judged according to the noise and the scales generated by the collision between the first sphere and the first shallow groove, a doctor can accurately control the pressing height according to different patients, and then the angle of the distal end valgus angle of the femur can be accurately positioned and determined, so that the valgus angle gauge has important significance on the accurate installation and the service life of a prosthesis;
2. in the invention, because the common tangent plane formed between the tangent points of the inner side and the outer side of the anterior femoral condyle has a certain gradient and is not a complete plane, after the eversion angle and the osteotomy height are determined, the osteotomy module can not be completely attached and contacted with the anterior femoral condyle, which can cause the osteotomy angle to have a certain error, and the angle of the osteotomy module can be slightly adjusted by the limiting groove, so that the osteotomy module is accurately attached and contacted with the anterior femoral condyle, and the accuracy of osteotomy is increased;
3. according to the invention, the angle adjusting structure can simply and accurately determine the angle of the distal end valgus angle of the femur, the distal end guiding mechanism can simply and accurately determine the height of the femur osteotomy, the doctor is convenient to operate, and the guidance performance is good.
Drawings
FIG. 1 is a perspective view of the valgus angulometer of the present invention;
fig. 2 is a perspective view of an intramedullary rod of the present invention;
FIG. 3 is a perspective view of the sleeve of the present invention;
FIG. 4 is a perspective view of the latch of the present invention;
FIG. 5 is a perspective view of the osteotomy module of the present invention;
FIG. 6 is a first perspective view of the angle adjustment structure of the present invention;
FIG. 7 is an exploded view of the angle adjustment structure of the present invention;
FIG. 8 is a second perspective view of the angle adjustment structure of the present invention;
FIG. 9 is a first perspective view of the distal guide mechanism of the present invention;
FIG. 10 is a second perspective view of the distal guide mechanism of the present invention;
FIG. 11 is a perspective view of the height adjustment dial of the present invention;
FIG. 12 is a third perspective view of the distal guide mechanism of the present invention;
fig. 13 is a third perspective view of the guide block of the present invention.
Reference numerals: reference numerals: 1. an intramedullary rod; 2. a sleeve; 3. locking; 4. a long groove; 5. a first shallow groove; 6. a circular deep groove; 7. a bowl-shaped large groove; 8. a first sphere; 9. an angle adjustment structure; 10. a distal guide mechanism; 11. a guide bar; 12. a limiting groove; 13. a first pin; 14. an anti-slip groove; 15. a spring arm; 16. an angle twisting disc; 17. a positioning member; 18. an elastic pressing member; 19. a vertical rotating piece; 20. a platform base; 21. a spring arm groove; 22. a second shallow groove; 23. a second sphere; 24. a waist-shaped hole; 25. a cylindrical pin; 26. pressing the hole; 27. a fixed block; 28. a guide block; 29. connecting blocks; 30. a height adjustment dial; 31. a second guide post; 32. a second ring groove; 33. a third sphere; 34. a third shallow groove; 35. connecting columns; 36. a barb; 37. a limiting block; 38. a bone cutting module; 39. a fixing plate; 40. bending the hole; 41. a first ring groove; 42. a first guide post; 43. a vertical hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example (b): referring to fig. 1 to 5, in the present invention, an eversion angle gauge includes an intramedullary rod 1, the intramedullary rod 1 is a long rod-shaped structure with scales, and is used for inserting bone marrow during a femur osteotomy, a sleeve 2 is disposed in the middle of the intramedullary rod 1, the sleeve 2 is sleeved on the intramedullary rod 1 and can slide with respect to the intramedullary rod 1, a latch 3 is disposed on the upper portion of the sleeve 2, the latch 3 is sleeved on the sleeve 2, long grooves 4 are disposed on both sides of the intramedullary rod 1, the long grooves 4 enable a certain gap to be formed between the intramedullary rod 1 and the sleeve 2, a plurality of shallow grooves 5 are disposed in the long grooves 4, the plurality of shallow grooves 5 are arranged in the long grooves 4 at equal intervals, a circular deep groove 6 is disposed at a position corresponding to the long groove 4 at the upper end of the sleeve 2, a bowl-shaped large groove 7 is disposed at a position corresponding to the latch 3 and the circular deep groove 6, a first ball 8 is disposed in a space formed by the first, the first sphere 8 is relatively fixed in the circular deep groove 6 and can roll in the circular deep groove 6, one side of the sleeve 2 is provided with an angle adjusting structure 9, the angle adjusting structure 9 is used for accurately positioning the angle of the distal end valgus angle of the femur, the other side of the angle adjusting structure 9 is provided with a distal guide mechanism 10, the distal guide mechanism 10 is used for accurately positioning the height of the femoral osteotomy, the angle adjusting structure 9 and the distal guide mechanism 10 are connected through a guide rod 11, the lower end of the distal guide mechanism 10 is provided with an osteotomy module 38, the osteotomy module 38 is used for determining the position of the femoral osteotomy, the upper part of the osteotomy module 38 is provided with a limiting groove 12, a common tangent plane formed between the tangent points of the inner side and the outer side of the anterior condyle of the femur has a certain gradient and is not a complete vertical plane, so that the osteotomy module 38 can not completely contact the inner side and the outer side of the anterior femur after the, this may result in some error in the angle of the osteotomy, and the spacing groove 12 may slightly adjust the angle of the osteotomy module 38 so that the osteotomy module 38 precisely contacts the medial and lateral sides of the anterior femoral condyle, increasing the accuracy of the osteotomy.
Referring to fig. 1 to 5, the sleeve 2 is connected with the lock catch 3 through a first pin 13, anti-slip grooves 14 are formed in one sides of the upper ends of the sleeve 2 and the lock catch 3, and an elastic arm 15 is further arranged at the lower end of the lock catch 3.
Referring to fig. 6 to 8, the angle adjusting structure 9 includes an angle twisting disk 16, a positioning member 17, an elastic pressing member 18, and a fixing plate 39, the positioning member 17 is located in the middle of the rod 1, the positioning member 17 is sleeved on the sleeve 2, the positioning member 17 includes a vertical rotating member 19 and a flat base 20, the vertical rotating member 19 and the rod 1 are in the same vertical direction, the flat base 20 is perpendicular to the vertical rotating member 19, the flat base 20 is fixed on the distal platform of femur, the angle twisting disk 16 is located on one side of the vertical rotating member 19, the fixing plate 39 is located between the vertical rotating member 19 and the sleeve 2, the vertical rotating member 19, the fixing plate 39 and the angle twisting disk 16 are matched with each other to drive the positioning member 17 to rotate a certain angle, so as to determine the angle of the distal valgus angle of the femur, the elastic pressing member 18 is located on one side of the flat base 20, the elastic pressing member 18 is a roll-shaped elastic body, when the positioning, the angle of rotation between the retainer 17 and the sleeve 2 is fixed, this angle being the angle of the distal valgus angle of the femur.
Referring to fig. 6 to 8, an elastic arm groove 21 is formed in one side of the vertical rotating member 19 contacting the angle twisting plate 16, the elastic arm groove 21 includes a strip-shaped groove and an elastic arm, one end of the elastic arm is fixed on the vertical rotating member 19, a plurality of second shallow grooves 22 are formed in one side of the angle twisting plate 16 contacting the vertical rotating member 19, the plurality of second shallow grooves 22 are arranged around the angle twisting plate 16 at equal intervals, a second ball 23 is arranged between the top end of the elastic arm groove 21 and the second shallow grooves 22, a bending hole 40 is further formed in one side of the vertical rotating member 19, a first annular groove 41 is formed in a position of the angle twisting plate 16 corresponding to the bending hole 40, a first guide column 42 is arranged in a position of the fixing plate 39 corresponding to the bending hole 40, the first guide column 42 penetrates through the bending hole 40 into the first annular groove 41, the elastic arm groove 21 has a certain interference effect on the second ball 23, a kidney-shaped hole 24 is formed in the middle of the platform base 20, the intramedullary rod 1 and the sleeve 2 penetrate through the, the kidney-shaped hole 24 can provide a space for the offset between the platform seat 20 and the intramedullary rod 1, the sleeve 2 is connected with the platform seat 20 through the cylindrical pin 25, the sleeve 2 is rotatably connected with the platform seat 20, the pressure hole 26 is further formed in one side of the platform seat 20, one end of the elastic pressing piece 18 is connected with the cylindrical pin 25, the elastic pressing piece 18 is fixedly connected with the cylindrical pin 25, and the other end of the elastic pressing piece 18 is inserted into the pressure hole 26.
Referring to fig. 6 to 8, the angle dial 16 is provided with angle scales for determining the valgus angle of the distal end of the femur, the elastic pressing member 18 is fixedly connected with the sleeve 2, the platform base 20 is rotatably connected with the sleeve 2, and the fixing plate 39 is fixedly connected with the sleeve 2.
Please refer to fig. 9 to 13, the distal end guide mechanism 10 includes a fixed block 27, a guide block 28, a connection block 29, a height adjustment turntable 30, the fixed block 27 is located on one side of the angle adjustment structure 9, the fixed block 27 is driven by the guide rod 11 to rotate by a certain angle, the guide block 28 and the connection block 29 are located on one side of the fixed block 27 away from the angle adjustment structure 9, the guide block 28 and the connection block 29 can move up and down to drive the osteotomy module 38 to move up and down, so as to determine the depth of the osteotomy, the height adjustment turntable 30 is located on one side of the guide block 28 and the connection block 29 away from the fixed block 27, height scales are provided on the height adjustment turntable 30, and when the height adjustment turntable 30 rotates under the external force, the guide block 28 and.
Referring to fig. 9 to 13, a vertical hole 43 is formed in the middle of the guide block 28, a second guide post 31 is disposed at one end of the fixed block 27 close to the guide block 28, a second annular groove 32 is disposed at one end of the height adjusting turntable 30 close to the guide block 28, the second guide post 31 penetrates through the vertical hole 43 and is inserted into the second annular groove 32, a third ball 33 is disposed at the lower portion of one end of the guide block 28 close to the height adjusting turntable 30, a plurality of third shallow grooves 34 are disposed at one end of the height adjusting turntable 30 close to the guide block 28, and the third ball 33 corresponds to the third shallow grooves 34.
Referring to fig. 9 to 13, the upper end of the guide block 28, the fixing block 27 and the osteotomy module 38 are connected through a connecting column 35, the connecting column 35 is fixedly connected with the guide block 28 and the osteotomy module 38, the connecting column 35 is slidably connected with the fixing block 27, the guide block 28 is fixedly connected with the connecting block 29 through a pin, the guide block 28 is rotatably connected with the height adjusting turntable 30, a barb 36 is arranged at the lower end of the connecting block 29, the barb 36 is hung on the osteotomy module 38, and the connecting block 29 can drive the osteotomy module 38 to move up and down when moving up and down.
Referring to fig. 4 and 13, a position of the lower end of the guide block 28 corresponding to the position of the limit groove 12 is provided with a limit block 37, and the limit block 37 corresponds to the position of the limit groove 12, so that the angle of the osteotomy module 38 can be finely adjusted.
Referring to fig. 1, the guide rod 11 passes through the platform base 20, and the guide rod 11 is fixedly connected with the fixing block 27.
The working principle of the invention is as follows: when the distal femur is cut, the intramedullary rod 1 is inserted into the cavity of the femur marrow, the depth of the intramedullary rod 1 in the cavity of the femur marrow is adjusted, the platform base 20 is fixed on the platform of the distal femur after the adjustment is finished, then the angle adjusting structure 9 is adjusted to determine the eversion angle of the distal femur, then the distal end guiding mechanism 10 is adjusted to determine the height of the cut bone, then the cutting module 38 is slightly rotated to make the cutting module 38 accurately contact the inner side and the outer side of the anterior condyle of the femur, the cutting module is fixed by nails, and finally a bone saw is inserted into a cutting groove of the cutting module 38 to cut the bone;
the depth adjustment principle of the intramedullary rod 1 is as follows: when no external force is exerted, the upper end of the elastic arm 15 has a certain interference effect on the sleeve 2, and meanwhile, the bowl-shaped large groove 7 and the bowl-shaped shallow groove 5 have a certain interference effect on the first ball 8, so that the first ball 8 is relatively and stably fixed in a space formed by the first shallow groove 5, the circular deep groove 6 and the bowl-shaped large groove 7, when the manual anti-slip groove 14 is pressed by hands, the interference effect between the upper end of the elastic arm 15 and the sleeve 2 is transferred to the lower end of the elastic arm 15, the interference effect between the first ball 8 and the bowl-shaped large groove 7 disappears, the intramedullary rod 1 is pressed downwards, the first ball 8 rolls into the next first shallow groove 5, the pressing height of the intramedullary rod 1 is the distance between the two first shallow grooves 5, and the pressing height of the intramedullary rod 1 is accurately fixed;
the working principle of the angle adjusting structure 9 is as follows: when no external force is applied, the interference effect of the elastic arm groove 21 on the second ball body 23 enables the positions of the second ball body 23 and the second shallow groove 22 to be relatively fixed, when the angle of the far end valgus angle of the femur needs to be adjusted, the elastic pressing piece 18 is manually shifted, one end of the elastic pressing piece 18 is not connected with the pressing hole 26, the angle twisting disc 16 is manually rotated, the first guide column 42 is not moved, the first annular groove 41 and the bent hole 40 are mutually deviated under the action of the first guide column 42, the angle twisting disc 16 further drives the vertical rotating piece 19 to be deviated, when the second ball body 23 is deviated to enter the next second shallow groove 22, the offset is the angle between the two shallow grooves 22, after the angle adjustment of the distal end valgus angle of the femur is completed, the elastic pressing piece 18 is manually shifted, one end of the elastic pressing piece 18 is inserted into the pressing hole 26, the rotating angle between the platform seat 20 and the sleeve 2 is fixed, and the angle of the distal end valgus angle of the femur can be accurately determined;
the working principle of the distal guiding mechanism 10 is: when the height adjusting turntable 30 is rotated, the second guide column 31 is fixed along with the fixing block 27, and the second ring groove 32 and the vertical hole 43 are vertically offset with each other under the rotating action, so that the guide block 28 is driven to move up and down, the connecting block 29 is driven to move up and down, and the height of the osteotomy module 38 is adjusted.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. Valgus angle gauge, including intramedullary pole (1), its characterized in that: the middle part of the intramedullary rod (1) is provided with a sleeve (2), the upper part of the sleeve (2) is provided with a lock catch (3), two sides of the intramedullary rod (1) are provided with elongated slots (4), a plurality of first shallow slots (5) are arranged in the elongated slots (4), the upper end of the sleeve (2) is provided with a circular deep slot (6) at a position corresponding to the elongated slots (4), the lock catch (3) is provided with a bowl-shaped large slot (7) at a position corresponding to the circular deep slot (6), a first ball body (8) is arranged in a space formed by the first shallow slots (5), the circular deep slot (6) and the bowl-shaped large slot (7), one side of the sleeve (2) is provided with an angle adjusting structure (9), the other side of the angle adjusting structure (9) is provided with a far-end guide mechanism (10), and the angle adjusting structure (9) is connected with the far-end, the lower end of the far-end guide mechanism (10) is provided with an osteotomy module (38), and the upper part of the osteotomy module (38) is provided with a limiting groove (12);
angle modulation structure (9) are including angle wrench disk (16), setting element (17), elasticity casting die (18), fixed plate (39), setting element (17) are located the middle part of intramedullary pole (1), setting element (17) are including vertical commentaries on classics piece (19) and flat bed seat (20), angle wrench disk (16) are located vertical commentaries on classics piece (19) one side, fixed plate (39) are located vertical commentaries on classics between piece (19) and sleeve (2), elasticity casting die (18) are located flat bed seat (20) one side.
2. A valgus angulator according to claim 1, characterized in that: the sleeve (2) is connected with the lock catch (3) through a first pin (13), anti-skidding grooves (14) are formed in one sides of the upper ends of the sleeve (2) and the lock catch (3), and an elastic arm (15) is further arranged at the lower end of the lock catch (3).
3. A valgus angulator according to claim 1, characterized in that: one side of the vertical rotating piece (19) and the angle twisting plate (16) is provided with an elastic arm groove (21), one side of the angle twisting plate (16) and the vertical rotating piece (19) is provided with a plurality of two shallow grooves (22), two spheres (23) are arranged between the top end of the elastic arm groove (21) and the two shallow grooves (22), one side of the vertical rotating piece (19) is further provided with a bent hole (40), the position corresponding to the bent hole (40) on the angle twisting plate (16) is provided with a circular groove (41), the position corresponding to the bent hole (40) on the fixing plate (39) is provided with a guide column (42), the guide column (42) penetrates through the bent hole (40) into the circular groove (41), the middle of the platform seat (20) is provided with a waist-shaped hole (24), the intramedullary rod (1) and the sleeve (2) penetrate into the waist-shaped hole (24), the sleeve (2) and the platform seat (20) are connected through a cylindrical pin (25), one side of the platform base (20) is also provided with a press hole (26), one end of the elastic pressing piece (18) is connected with the cylindrical pin (25), and the other end of the elastic pressing piece (18) is inserted into the press hole (26).
4. A valgus angulator according to claim 3, characterized in that: be provided with the angle scale on angle wrench disk (16), elasticity casting die (18) and sleeve (2) fixed connection, platform seat (20) and sleeve (2) rotate the connection, fixed plate (39) and sleeve (2) fixed connection.
5. A valgus angulator according to claim 1, characterized in that: distal end guiding mechanism (10) are including fixed block (27), guide block (28), connecting block (29), altitude mixture control carousel (30), fixed block (27) are located angle modulation structure (9) one side, guide block (28) and connecting block (29) are located one side that angle modulation structure (9) were kept away from to fixed block (27), altitude mixture control carousel (30) are located one side that fixed block (27) were kept away from to guide block (28) and connecting block (29), be provided with the height scale on altitude mixture control carousel (30).
6. A valgus angulator according to claim 5, characterized in that: guide block (28) middle part is provided with vertical hole (43), the one end that fixed block (27) are close guide block (28) is provided with guide post (31) No. two, the one end that altitude mixture control carousel (30) are close guide block (28) is provided with annular (32) No. two, guide post (31) pass vertical hole (43) and insert in annular (32) No. two, the one end lower part that guide block (28) are close altitude mixture control carousel (30) is provided with No. three spheroid (33), the one end that altitude mixture control carousel (30) are close guide block (28) is provided with No. three shallow slot (34) of a plurality of, No. three spheroid (33) and No. three shallow slot (34) are corresponding.
7. A valgus angulator according to claim 6, characterized in that: guide block (28) upper end, fixed block (27) and cut and connect through spliced pole (35) between bone module (38), spliced pole (35) and guide block (28), cut bone module (38) fixed connection, spliced pole (35) and fixed block (27) sliding connection, guide block (28) and connecting block (29) are through pin fixed connection, guide block (28) and altitude mixture control carousel (30) rotate to be connected, connecting block (29) lower extreme is provided with barb (36), barb (36) articulate on cutting bone module (38).
8. A valgus angulator according to claim 6, characterized in that: and a limiting block (37) is arranged at the position, corresponding to the limiting groove (12), of the lower end of the guide block (28).
9. A valgus angulator according to claim 5, characterized in that: platform seat (20) are passed in guide bar (11), guide bar (11) and fixed block (27) fixed connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010624444.8A CN111789680B (en) | 2020-07-01 | 2020-07-01 | Angle device turns up |
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| CN202010624444.8A CN111789680B (en) | 2020-07-01 | 2020-07-01 | Angle device turns up |
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| CN111789680B true CN111789680B (en) | 2021-07-02 |
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| CN113693672B (en) * | 2021-09-30 | 2023-09-22 | 天衍医疗器材有限公司 | Height-adjustable open type tibia probe |
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| CN205054339U (en) * | 2015-08-18 | 2016-03-02 | 长沙市第三医院 | Individuation knee joint shin bone near -end cuts bone conduction board |
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| ES2800031T3 (en) * | 2007-09-30 | 2020-12-23 | Depuy Products Inc | Method for generating custom patient-specific orthopedic surgical instrumentation |
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| CN204671253U (en) * | 2015-05-22 | 2015-09-30 | 北京爱康宜诚医疗器材股份有限公司 | Osteotomy locating guider |
| CN204909559U (en) * | 2015-08-18 | 2015-12-30 | 长沙市第三医院 | Individuation knee joint thighbone distal end cuts bone conduction board |
| CN205054339U (en) * | 2015-08-18 | 2016-03-02 | 长沙市第三医院 | Individuation knee joint shin bone near -end cuts bone conduction board |
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