CN113456319B - Test mold for knee joint replacement operation and revision operation thereof - Google Patents
Test mold for knee joint replacement operation and revision operation thereof Download PDFInfo
- Publication number
- CN113456319B CN113456319B CN202110755495.9A CN202110755495A CN113456319B CN 113456319 B CN113456319 B CN 113456319B CN 202110755495 A CN202110755495 A CN 202110755495A CN 113456319 B CN113456319 B CN 113456319B
- Authority
- CN
- China
- Prior art keywords
- platform
- column
- eccentric
- inserting sheet
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 122
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 239000011324 bead Substances 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims abstract description 4
- 238000001356 surgical procedure Methods 0.000 claims description 32
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 238000013150 knee replacement Methods 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 210000002303 tibia Anatomy 0.000 description 18
- 230000000694 effects Effects 0.000 description 8
- 210000000689 upper leg Anatomy 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 3
- 206010057178 Osteoarthropathies Diseases 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3836—Special connection between upper and lower leg, e.g. constrained
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3877—Patellae or trochleae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/468—Testing instruments for artificial joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4684—Trial or dummy prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
- A61F2002/4658—Measuring instruments used for implanting artificial joints for measuring dimensions, e.g. length
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4657—Measuring instruments used for implanting artificial joints
- A61F2002/4668—Measuring instruments used for implanting artificial joints for measuring angles
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a test die for knee joint replacement operation and repair operation thereof, which comprises a platform substrate and a gasket test die, wherein an inserting sheet is arranged between the platform substrate and the gasket test die, an inserting sheet upper guide groove is arranged at the position, corresponding to the inserting sheet, of the lower end of the platform substrate, an inserting sheet lower guide groove is arranged at the position, corresponding to the inserting sheet, of the upper end of the gasket test die, first sliding grooves are respectively arranged at the upper end and the lower end of the inserting sheet, guide beads are arranged at the positions, corresponding to the first sliding grooves, of the inserting sheet upper guide groove, and gaps are reserved between two sides of the inserting sheet and the upper guide groove and between two sides of the inserting sheet lower guide groove, and are used for inserting patches. According to the invention, the inserting sheet and the patch are arranged between the platform substrate and the gasket test die, so that the production cost of the test die is reduced, the selection of doctors is facilitated, the requirement on the accuracy of measuring instruments is reduced, the accuracy requirement on the judgment of the doctors is also reduced, and the operation time is shortened.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a test mold for knee joint replacement surgery and revision surgery.
Background
Knee joints are important weight-bearing joints of lower limbs, and their structure and function are the most complex of human joints. Degenerative osteoarthropathy of the knee is a common disease in the elderly, with severe knee osteoarthropathy occurring in an increasing number of patients requiring artificial knee arthroplasty. Knee joint replacement can relieve knee joint pain, improve knee joint function, correct knee joint deformity and achieve long-term stability.
The selection of the specifications of the knee joint prosthesis is a very important and complex link in knee joint replacement surgery, wherein the selection of the gasket prosthesis and the tibial plateau prosthesis is a step after osteotomy, and comprises the steps of firstly measuring the bending Qu Jianxi and straightening gaps between the femur and the tibia by using a measuring tool, then measuring the gap conditions after the osteotomy of the femur and the tibia by using a gasket test mold and a plateau prosthesis test mold together with a femoral condyle test mold, and finally determining the specifications of the prosthesis according to the measurement results of the test molds.
The gasket test die and the platform prosthesis test die are collectively called as test dies, the existing test dies have four types, each type comprises eight thickness dimensions, namely thirty-six types of test dies, so many types of test dies lead to higher production cost of each set of prosthesis test dies, doctors need to accurately judge proper test dies in so many types of prostheses according to measured data, once the judgment is inaccurate, the actions of repeatedly installing test dies and taking down test dies are needed, and therefore, the requirement on the doctors is very high, and the operation time can be increased.
After the knee joint replacement operation is finished, the edge of the tibia platform is subjected to serious bone abrasion after the knee joint replacement operation is finished, or the situation that the tibia is crushed and broken and the bone is seriously lost is caused by other reasons, the knee joint repair operation needs to be carried out, namely, the center of the rest tibia platform needs to be found again, a new tibia platform prosthesis is installed at the new center, the eccentricity and the rotation angle are generated between the original tibia platform prosthesis and the new tibia platform prosthesis, in the existing knee joint repair operation, the corresponding eccentric tibia platform prosthesis test mold is provided, but the eccentricity of the test mold is not adjustable, so that the specifications of the eccentric tibia platform prosthesis test mold are more, the use is inconvenient, the size of a gasket test mold matched with the eccentric tibia platform prosthesis test mold is not adjustable, and the specifications of the gasket test mold are also more, the types are more, and the use is inconvenient.
The test mould for knee joint replacement surgery and revision surgery disclosed by the invention is characterized in that the same test mould system is used in knee joint replacement surgery and knee joint revision surgery, and only part of parts are replaced during use, so that the test mould specification is reduced, and the operation is convenient.
Disclosure of Invention
The present invention is directed to a trial mold for knee joint replacement surgery and revision surgery thereof, to solve the problems set forth in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model comprises a platform base plate and a gasket test die, wherein an inserting sheet is arranged between the platform base plate and the gasket test die, the inserting sheet is used for increasing the thickness of the test die, so that the test die only keeps four models, eight-thickness inserting sheets are arranged for each model of the test die, when a doctor selects the test die, the model of the test die is firstly selected, then the inserting sheet with proper thickness is selected according to the tested curve Qu Jianxi and the straightening gap, the production cost of the test die is reduced, the doctor is convenient to select, an inserting sheet upper guide groove is arranged at the position of the lower end of the platform base plate corresponding to the inserting sheet, an inserting sheet lower guide groove is arranged at the position of the upper end of the gasket test die corresponding to the inserting sheet, the upper guide groove and the lower guide groove of the inserting sheet are used for leaving gaps to facilitate the insertion of the inserting sheet, a first chute is arranged at the upper end and the lower end of the inserting sheet, the position corresponding to the first sliding groove in the guide groove on the inserting sheet is provided with a guide bead, the first sliding groove slides along the guide bead when the inserting sheet is inserted for guiding the inserting sheet, meanwhile, the guide bead is used for generating a relative fixing effect on the inserting sheet to prevent the inserting sheet from falling off, a gap is reserved between two sides of the inserting sheet and the upper guide groove and between two sides of the inserting sheet and the lower guide groove of the inserting sheet, the gap is convenient for inserting a patch, a doctor can further confirm the size by supplementing the patch after putting the test mold into a curve Qu Jianxi and a straightening gap if considering that the test mold is unsuitable in size, the removal of the test mold, the selection of the test mold and the reinstallation of the test mold are avoided, the requirement on the accuracy of a measuring instrument is reduced, the accuracy requirement on the judgment of the doctor is also reduced, the operation time is reduced, the gap is used for inserting the patch which is a structure with an upper end face and two side faces, and the thickness is 1mm, can insert from the upper and lower both sides of inserted sheet, consequently after putting into bone gap with the examination mould, can also adjust the size of 2mm through the patch.
Preferably, the two sides of the inserting sheet are respectively provided with an inserting inclined plane, the two inserting inclined planes positioned at one side of the inserting sheet are arranged in a mirror image manner, the two sides of the patch are respectively provided with a complementary inclined plane, the inserting inclined planes and the complementary inclined planes are complementary in shape, the shapes of the inserting inclined planes and the complementary inclined planes can enable the inserting sheet and the patch to have certain fit effect, the patch can slide along the inserting sheet, and the patch can be prevented from falling by combining the acting force of the upper guide groove or the lower guide groove of the inserting sheet on the inserting sheet in the vertical direction.
Preferably, the patch is further provided with a second chute, and when the patch is inserted into the upper guide groove or the lower guide groove of the inserting sheet, the second chute has the same function as the first chute.
Preferably, the insertion end of the patch is provided with a smooth inclined surface, and the smooth inclined surface enables the insertion end of the patch to be more easily inserted into gaps between the inserting sheet and the upper guide groove and the lower guide groove of the inserting sheet.
Preferably, one end of the inserting piece is provided with a draw hook, and the draw hook is used for conveniently holding the inserting piece so as to facilitate replacement of the inserting piece.
Preferably, the platform base plate includes upper portion platform base plate and lower part platform base plate, the material of upper portion platform base plate and gasket false body is unanimous, lower part platform base plate is by the preparation of stereoplasm metal, has higher hardness, makes things convenient for the change of inserted sheet and patch, lower part platform base plate upper end is provided with a plurality of stud bumps, upper portion platform base plate lower extreme is provided with the post groove with the position that the stud bump corresponds, stud bump and post groove are used for connecting upper portion platform base plate and lower part platform base plate, pass through screw connection between upper portion platform base plate and the lower part platform base plate, the screw is used for fixed upper portion platform base plate and lower part platform base plate to combine stud bump and post groove to form stable relation of connection.
Preferably, the lower end of the gasket test die is further provided with an intramedullary post cylinder, the intramedullary post cylinder is used for being inserted into a femoral marrow cavity, the test die is relatively fixed, the lower end of the lower platform substrate is provided with a guide post, the guide post extends into the intramedullary post cylinder, when the insert is placed in the upper guide groove and the lower guide groove of the insert, the guide post moves along the intramedullary post cylinder and is used for preventing separation between the lower platform substrate and the gasket test die, the side wall of the intramedullary post cylinder is provided with the guide groove, the position of the guide post corresponding to the guide groove is provided with a guide pin, the guide pin extends into the guide groove, and the guide pin and the guide groove are used for preventing relative rotation between the lower platform substrate and the gasket test die.
Preferably, the guide post is screwed on the lower platform base plate, so that the guide post can be disassembled, the middle part of the gasket test die is provided with a first inner edge bulge and a rotation stopping groove, the upper part of the intramedullary column casing is provided with an outer edge bulge and a rotation stopping block, the outer edge bulge is arranged on the first inner edge bulge, the intramedullary column casing is detachably connected on the gasket test die, the eccentric post is conveniently replaced on the gasket test die in the subsequent knee joint repairing operation, the rotation stopping block is arranged in the rotation stopping groove and used for preventing the intramedullary column casing from rotating circumferentially, and the guide groove extends to the upper edge of the intramedullary column casing, so that the guide post can be separated from the intramedullary column casing, and the guide post is convenient to disassemble.
Preferably, the lower extreme of the gasket examination mould is provided with the eccentric column, the eccentricity of eccentric column is 4mm for insert the femoral marrow chamber, in order to confirm the specification model of new shin bone platform prosthesis, be provided with eccentric scale on the up end of eccentric column, the eccentric column upper end is provided with eccentric platform, eccentric platform overlaps under certain interference effect and locates on the eccentric column, can slightly rotate between the two, rotates eccentric platform, makes taking place relative rotation between eccentric platform and the eccentric column, but the eccentric distance of eccentric column, realizes-2 mm- +2mm's eccentric distance regulation, and by eccentric scale indication, be provided with the angle scale on the up end of eccentric platform, rotate the gasket examination mould, make gasket examination mould and eccentric platform take place relative rotation, the angle scale can instruct the angle of gasket examination mould rotation for instruct the rotation angle of gasket examination mould, with this selection of the specification of platform prosthesis, gasket examination mould middle part trompil, and in this hole department sets up No. two inner edge protruding, the eccentric platform is arranged in No. two inner edge protruding, so with detachable on the gasket examination mould.
Preferably, the protruding upper end of No. two inner edges still is provided with the annular, the lateral part of eccentric platform is provided with the through-hole with the position that the annular corresponds, set gradually ball, spring, pin in the through-hole from the one end that is close to the annular to the one end that keeps away from the annular, one side of ball stretches out the through-hole and contacts in the annular outward, the pin is used for the butt spring, prevents that the spring from popping out the through-hole, the ball hugs closely in the annular under the elasticity effect of spring, when making relative rotation between eccentric platform and the gasket test die, has certain restriction effect, makes relatively rotation and relatively fixing between the two.
Compared with the prior art, the invention has the following beneficial effects:
1. in the knee joint replacement operation, the proper test die and the proper insert can be selected by measuring the gap size by a measuring tool, the insert is placed in the test die, the thickness of the test die is adjusted, the number of the test dies is reduced by the insert, the selection of doctors is facilitated, and meanwhile, the production cost of the test die is reduced; then placing the model into a knee joint to verify whether the model with the specification and the thickness is proper, if not, inserting a patch into the model to further confirm the size, avoiding the actions of taking down the model, selecting the model, installing the model again, reducing the requirement on the precision of the measuring instrument, reducing the requirement on the precision judged by doctors, and reducing the operation time;
2. according to the invention, the intramedullary column casing is detachably arranged on the gasket test die, the guide post is detachably arranged on the platform substrate, and the eccentric post and the eccentric platform which are detachably arranged are arranged, so that the set of test die system can be simultaneously applied to knee joint replacement operation and knee joint revision operation, the application range of the test die system is improved, the number of test dies in two sets of operations is reduced, and the production cost is reduced;
3. the invention sets eccentric scales on the upper end face of the eccentric column, and sets an eccentric platform on the eccentric column, and sets an angle scale on the upper end face of the eccentric platform, in knee joint revision surgery, the eccentricity can be adjusted by rotating the eccentric platform, the gasket test die and the eccentric platform are rotated relatively by rotating the gasket test die, the rotation angle of the gasket test die is adjusted, and a more accurate tibial platform and prosthesis are selected according to the eccentricity and the rotation angle, so that bone is reserved to the greatest extent, and the rapid recovery of the patient after surgery is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is an elevation view of a trial of the present invention for knee replacement surgery and revision surgery;
FIG. 2 is an exploded view of a trial of the present invention for knee replacement surgery and revision surgery;
FIG. 3 is a perspective view of a tab of the present invention;
FIG. 4 is a perspective view of a patch of the present invention;
FIG. 5 is an exploded view of a platform substrate of the present invention;
FIG. 6 is a perspective view of a shim test and lower platen base plate of the present invention;
FIG. 7 is a perspective view of a shim trial and intramedullary barrel of the present invention;
FIG. 8 is a perspective view of a shim test, eccentric post, and eccentric platform of the present invention;
in the figure: a platform substrate-1; pad test-2; insert sheet-3; guide groove-4 on the insert sheet; a lower guiding groove-5 of the inserting sheet; a first chute-6; guide bead-7; patch-8; an intramedullary cylinder-9; guide post-10; a guide groove-11; a guide pin-12; inner edge convex-13; a rotation stopping groove-14; outer edge convex-15; a rotation stop block-16; eccentric column-17; eccentric platform-18; second inner edge convex-19; ring groove-20; ball-21; a spring-22; a pin-23; an insertion inclined plane-24; supplementing an inclined plane-25; second runner-26; smooth inclined surfaces-27; drag hook-28; an upper stage substrate-29; a lower stage substrate-30; stud-31; column groove-32; screw-33.
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.
Examples: the invention provides a technical proposal, as shown in figures 1-2, for a test mould for knee joint replacement operation and revision operation thereof, which comprises a platform base plate 1 and a gasket test mould 2, wherein an inserting sheet 3 is arranged between the platform base plate 1 and the gasket test mould 2, the inserting sheet 3 is used for increasing the thickness of the test mould, so that the test mould only keeps four models, eight thickness inserting sheets 3 are arranged for each model of test mould, when a doctor selects the test mould, the model of the test mould is selected firstly, then the inserting sheet with proper thickness is selected according to the tested curve Qu Jianxi and the straightening gap, the design reduces the production cost of the test mould, and is convenient for the doctor to select, an inserting sheet upper guiding groove 4 is arranged at the position of the lower end of the platform base plate 1 corresponding to the inserting sheet 3, an inserting sheet lower guiding groove 5 is arranged at the position of the upper end of the gasket test mould 2 corresponding to the inserting sheet 3, the inserting sheet upper guiding groove 4 and the inserting sheet lower guiding groove 5 are used for leaving the gap to facilitate the insertion of the inserting sheet 3, the upper and lower ends of the insert 3 are respectively provided with a first chute 6, the position corresponding to the first chute 6 in the upper guide groove 4 of the insert is provided with a guide bead 7, when the insert 3 is inserted, the first chute 6 slides along the guide bead 7 for guiding the insertion of the insert 3, meanwhile, the guide bead 7 is used for generating a relative fixing effect on the insert 3 to prevent the insert 3 from falling, gaps are reserved between the two sides of the insert 3, the upper guide groove 4 of the insert and the lower guide groove 5 of the insert, namely, the position shown in a of fig. 1, the gaps can facilitate the insertion of the patch 8, after a doctor places the test mould into the curve Qu Jianxi and the straightening gap, if the test mould is considered to be unsuitable in size, the size can be further confirmed by supplementing the patch 8, the removal of the test mould is avoided, the test mould is selected, the test mould is installed again, the requirement on the precision of a measuring instrument is reduced, and the requirement on the precision judged by the doctor is also reduced, and reduce the operation time, this space is used for inserting patch 8, and patch 8 is the structure that has an up end and two sides, and thickness is 1mm, can insert from the upper and lower both sides of inserted sheet 3, consequently after putting into the bone gap with the examination mould, can also adjust the size of 2mm through the patch.
As shown in fig. 3 to 4, the two sides of the insert 3 are respectively provided with an inserting inclined plane 24, the two inserting inclined planes 24 positioned at one side of the insert 3 are arranged in a mirror image manner, the two sides of the patch 8 are respectively provided with a compensating inclined plane 25, the shapes of the inserting inclined planes 24 and the compensating inclined planes 25 are complementary, the shapes of the inserting inclined planes 24 and the compensating inclined planes 25 can enable the insert 3 and the patch 8 to have a certain fit effect, the patch 8 can slide along the insert 3, and the patch 8 can be prevented from falling by combining the acting force of the insert upper guide groove 4 or the insert lower guide groove 5 on the insert 3 in the vertical direction.
As shown in fig. 4, the patch 8 is further provided with a second chute 26, and when the patch 8 is inserted into the upper guide slot 4 or the lower guide slot 5 of the insert, the second chute 26 has the same function as the first chute 6.
As shown in fig. 4, the insertion end of the patch 8 is provided with a smooth slope 27, and the smooth slope 27 makes it easier for the insertion end of the patch 8 to be inserted into the gaps between the insert sheet 3 and the insert sheet upper guide groove 4 and the insert sheet lower guide groove 5.
As shown in fig. 3, one end of the insert 3 is provided with a draw hook 28, and the draw hook 28 is used for conveniently holding the insert 3 so as to facilitate replacement of the insert 3.
As shown in fig. 5, the platform substrate 1 includes an upper platform substrate 29 and a lower platform substrate 30, the upper platform substrate 29 and the spacer prosthesis are made of plastic products, the lower platform substrate 30 is made of hard metal, has higher hardness, is convenient for replacement of the inserting sheet 3 and the patch 8, the upper end of the lower platform substrate 30 is provided with a plurality of stud bumps 31, the lower end of the upper platform substrate 29 is provided with a stud groove 32 corresponding to the stud bumps 31, the stud bumps 31 and the stud grooves 32 are used for connecting the upper platform substrate 29 and the lower platform substrate 30, the upper platform substrate 29 and the lower platform substrate 30 are connected through screws 33, and the screws 33 are used for fixing the upper platform substrate 29 and the lower platform substrate 30 and form a stable connection relationship in combination with the stud bumps 31 and the stud grooves 32.
As shown in fig. 6 to 7, an intramedullary post cylinder 9 is further disposed at the lower end of the gasket test mold 2, the intramedullary post cylinder 9 is used for being inserted into a femoral marrow cavity to fix the test mold relatively, a guide post 10 is disposed at the lower end of the lower platform base plate 30, the guide post 10 extends into the intramedullary post cylinder 9, when the insert 3 is placed in the upper guide groove 4 and the lower guide groove 5 of the insert, the guide post 10 moves along the intramedullary post cylinder 9 to prevent detachment between the lower platform base plate 30 and the gasket test mold 2, a guide groove 11 is formed on the side wall of the intramedullary post cylinder 9, a guide pin 12 is disposed at a position corresponding to the guide groove 11 of the guide post 10, the guide pin 12 extends into the guide groove 11, and the guide pin 12 and the guide groove 11 are used for preventing relative rotation between the lower platform base plate 30 and the gasket test mold 2.
Referring to fig. 7, the guide post 10 is screwed onto the lower platform base plate 30, so that the guide post 10 is detachable, the middle of the spacer test mold 2 is perforated, a first inner edge protrusion 13 and a rotation stopping groove 14 are provided at the hole, an outer edge protrusion 15 and a rotation stopping block 16 are provided at the upper part of the intramedullary post barrel 9, and the outer edge protrusion 15 is disposed on the first inner edge protrusion 13, so that the intramedullary post barrel 9 is detachably connected onto the spacer test mold 2, the eccentric post 17 is conveniently replaced on the spacer test mold 2 in the subsequent knee joint revision operation, the rotation stopping block 16 is disposed in the rotation stopping groove 14, so as to prevent the intramedullary post barrel 9 from rotating circumferentially, the guide groove 11 extends to the upper edge of the intramedullary post barrel 9, so that the guide post 10 can be separated from the intramedullary post barrel 9, and the guide post 10 is conveniently detached.
As shown in fig. 8, the lower end of the gasket test die 2 is provided with an eccentric column 17, the eccentricity of the eccentric column 17 is 4mm and is used for being inserted into a femoral marrow cavity to determine the specification model of a new tibia platform prosthesis, the upper end face of the eccentric column 17 is provided with an eccentric scale, the upper end of the eccentric column 17 is provided with an eccentric platform 18, the eccentric platform 18 is sleeved on the eccentric column 17 under certain interference effect, the eccentric column 17 can slightly rotate, the eccentric platform 18 is rotated to enable the eccentric platform 18 and the eccentric column 17 to relatively rotate, the eccentricity of the eccentric column 17 can be adjusted, the eccentricity of-2 mm to +2mm is adjusted, and is indicated by the eccentric scale, the upper end face of the eccentric platform 18 is provided with an angle scale, the gasket test die 2 is rotated, the gasket test die 2 and the eccentric platform 18 relatively rotate, the angle scale can be indicated to indicate the rotation angle of the gasket test die 2, the specification of the prosthesis is selected, the middle part of the gasket test die 2 is provided with a second inner edge bulge 19, the eccentric platform 18 is arranged on the second inner edge 19, and the gasket test die 18 can be detached from the second inner edge 19.
As shown in fig. 8, the upper end of the second inner edge bulge 19 is further provided with a ring groove 20, a through hole is formed in the side portion of the eccentric platform 18 and corresponds to the ring groove 20, a ball 21, a spring 22 and a pin 23 are sequentially arranged in the through hole from one end close to the ring groove 20 to one end far away from the ring groove 20, one side of the ball 21 extends out of the through hole and contacts the ring groove 20, the pin 23 is used for abutting against the spring 22 to prevent the spring 22 from ejecting out of the through hole, the ball 21 is tightly attached to the ring groove 20 under the elastic force of the spring 22, and a certain limiting effect is provided when the eccentric platform 18 and the gasket test mold 2 relatively rotate, so that the eccentric platform 18 and the gasket test mold 2 can relatively rotate and relatively fix.
The working principle of the invention is as follows: in knee joint replacement operation, after the tibia and the femur are cut, firstly measuring the curve Qu Jianxi and the straightening clearance between the femur and the tibia by using a measuring tool, then measuring the clearance conditions of the femur and the tibia after cutting by using a gasket test die and a platform prosthesis test die matched with a femur condyle test die, and finally determining the specification of the prosthesis according to the measuring result of the test die;
selecting a proper platform base plate 1 and a proper gasket test die 2 according to a curve Qu Jianxi and a straightening gap, screwing a guide post 10 on the gasket test die 2, attaching an intramedullary post cylinder 9 on the platform base plate 1, extending the guide post 10 into the intramedullary post cylinder 9 to connect the platform base plate 1 and the gasket test die 2, inserting a proper insert 3 into an insert upper guide groove 4 and an insert lower guide groove 5, inserting the intramedullary post cylinder 9 into a shank bone marrow cavity to enable the whole test die to be placed at a knee joint, judging whether the test die specification is proper by a doctor, and if the doctor considers that the test die size is improper, further confirming the size by supplementing a patch 8;
in knee joint revision surgery, a new tibial osteotomy platform is obtained by osteotomy of a worn part of tibia, then eccentricity and rotation angle between a platform prosthesis newly required to be installed and an original platform prosthesis are measured by using a measuring tool, according to the measured value, the eccentric platform 18 is rotated to adjust the eccentricity of the eccentric column 17, then the eccentric column 17 and the eccentric platform 18 are attached to the pad test mold 21, the pad test mold 2 is rotated to adjust the rotation angle of the pad test mold 2, and then the eccentric column 17 is placed in a femoral medullary cavity, so that the adjusted pad test mold 2 is combined with the platform substrate 1, the inserting sheet 3, the patch 8 and the like to be placed in the knee joint, and final prosthesis specifications are confirmed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A examination mould for knee joint replacement operation and repair operation thereof, including platform base plate (1) and gasket examination mould (2), its characterized in that: an inserting sheet (3) is arranged between the platform substrate (1) and the gasket test die (2), an inserting sheet upper guide groove (4) is arranged at the position, corresponding to the inserting sheet (3), of the lower end of the platform substrate (1), an inserting sheet lower guide groove (5) is arranged at the position, corresponding to the inserting sheet (3), of the upper end of the gasket test die (2), a first sliding groove (6) is arranged at the upper end and the lower end of the inserting sheet (3), guide beads (7) are arranged at the positions, corresponding to the first sliding groove (6), of the upper guide groove (4) of the inserting sheet, and gaps are reserved between the two sides of the inserting sheet (3) and the upper guide groove (4) and the lower guide groove (5) of the inserting sheet, and are used for inserting patches (8);
the two sides of the inserting piece (3) are provided with inserting inclined planes (24), two inserting inclined planes (24) positioned on one side of the inserting piece (3) are arranged in a mirror image mode, two sides of the patch (8) are provided with compensating inclined planes (25), and the inserting inclined planes (24) and the compensating inclined planes (25) are complementary in shape.
2. The trial for knee replacement surgery and revision surgery thereof according to claim 1, wherein: and a second sliding groove (26) is also arranged on the patch (8).
3. The trial for knee replacement surgery and revision surgery thereof according to claim 1, wherein: the insertion end of the patch (8) is provided with a smooth bevel (27).
4. The trial for knee replacement surgery and revision surgery thereof according to claim 1, wherein: one end of the inserting piece (3) is provided with a draw hook (28).
5. The trial for knee replacement surgery and revision surgery thereof according to claim 1, wherein: the platform substrate (1) comprises an upper platform substrate (29) and a lower platform substrate (30), a plurality of column protrusions (31) are arranged at the upper end of the lower platform substrate (30), column grooves (32) are formed in positions, corresponding to the column protrusions (31), of the lower end of the upper platform substrate (29), and the upper platform substrate (29) and the lower platform substrate (30) are connected through screws (33).
6. The test jig for knee joint replacement surgery and revision surgery thereof according to any one of claims 1 to 5, wherein: the gasket test die is characterized in that an intramedullary column casing (9) is further arranged at the lower end of the gasket test die (2), a guide column (10) is arranged at the lower end of the lower platform base plate (30), the guide column (10) stretches into the intramedullary column casing (9), a guide groove (11) is formed in the side wall of the intramedullary column casing (9), a guide pin (12) is arranged at a position, corresponding to the guide groove (11), of the guide column (10), and the guide pin (12) stretches into the guide groove (11).
7. The trial mould for knee replacement surgery and revision surgery thereof according to claim 6, wherein: the guiding column (10) is in threaded connection on the lower platform base plate (30), the middle part of the gasket test die (2) is provided with a number I inner edge bulge (13) and a rotation stopping groove (14) at the hole, the upper part of the intramedullary column tube (9) is provided with an outer edge bulge (15) and a rotation stopping block (16), the outer edge bulge (15) is arranged on the number I inner edge bulge (13), the rotation stopping block (16) is arranged in the rotation stopping groove (14), and the guiding groove (11) extends to the upper edge of the intramedullary column tube (9).
8. The test jig for knee joint replacement surgery and revision surgery thereof according to any one of claims 1 to 5, wherein: the gasket test die is characterized in that an eccentric column (17) is arranged at the lower end of the gasket test die (2), an eccentric scale is arranged on the upper end face of the eccentric column (17), an eccentric platform (18) is arranged at the upper end of the eccentric column (17), an angle scale is arranged on the upper end face of the eccentric platform (18), a hole is formed in the middle of the gasket test die (2), a second inner edge protrusion (19) is arranged at the hole, and the eccentric platform (18) is arranged on the second inner edge protrusion (19).
9. The trial of claim 8 for knee replacement surgery and revision surgery thereof, wherein: the upper end of the second inner edge bulge (19) is also provided with a ring groove (20), a through hole is formed in the position, corresponding to the ring groove (20), of the side part of the eccentric platform (18), a ball (21), a spring (22) and a pin (23) are sequentially arranged in the through hole from one end, close to the ring groove (20), to one end, far away from the ring groove (20), of the through hole, and one side of the ball (21) stretches out of the through hole and contacts the inside of the ring groove (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110755495.9A CN113456319B (en) | 2021-07-05 | 2021-07-05 | Test mold for knee joint replacement operation and revision operation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110755495.9A CN113456319B (en) | 2021-07-05 | 2021-07-05 | Test mold for knee joint replacement operation and revision operation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113456319A CN113456319A (en) | 2021-10-01 |
| CN113456319B true CN113456319B (en) | 2024-01-26 |
Family
ID=77877989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110755495.9A Active CN113456319B (en) | 2021-07-05 | 2021-07-05 | Test mold for knee joint replacement operation and revision operation thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113456319B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342667A (en) * | 2015-12-16 | 2016-02-24 | 嘉思特华剑医疗器材(天津)有限公司 | Precise eccentric distance knee joint tool module system |
| CN110051456A (en) * | 2018-01-19 | 2019-07-26 | 苏州微创关节医疗科技有限公司 | Modularization bends and stretches clearance checking scale/tibial prosthesis die trial |
| CN210961980U (en) * | 2019-09-04 | 2020-07-10 | 山东大学齐鲁医院(青岛) | Gap test pad for replacing knee joint gasket |
| CN111839823A (en) * | 2020-09-01 | 2020-10-30 | 天衍医疗器材有限公司 | From shin bone examination mould operation tool system of taking multiple verification |
| CN213465467U (en) * | 2020-07-30 | 2021-06-18 | 北京市春立正达医疗器械股份有限公司 | Knee joint test pad module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11033396B2 (en) * | 2019-02-05 | 2021-06-15 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
| US20210169654A1 (en) * | 2019-12-10 | 2021-06-10 | Depuy Ireland Unlimited Company | Metal reinforced acetabular shell liner |
-
2021
- 2021-07-05 CN CN202110755495.9A patent/CN113456319B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342667A (en) * | 2015-12-16 | 2016-02-24 | 嘉思特华剑医疗器材(天津)有限公司 | Precise eccentric distance knee joint tool module system |
| CN110051456A (en) * | 2018-01-19 | 2019-07-26 | 苏州微创关节医疗科技有限公司 | Modularization bends and stretches clearance checking scale/tibial prosthesis die trial |
| CN210961980U (en) * | 2019-09-04 | 2020-07-10 | 山东大学齐鲁医院(青岛) | Gap test pad for replacing knee joint gasket |
| CN213465467U (en) * | 2020-07-30 | 2021-06-18 | 北京市春立正达医疗器械股份有限公司 | Knee joint test pad module |
| CN111839823A (en) * | 2020-09-01 | 2020-10-30 | 天衍医疗器材有限公司 | From shin bone examination mould operation tool system of taking multiple verification |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113456319A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8551101B2 (en) | Methods and apparatus for preparing a patient's femur for patellofemoral knee arthroplasty | |
| US10463379B2 (en) | Customized surgical cutting guide for total knee replacement and method for making thereof | |
| EP2976045B1 (en) | Systems, methods of making, and devices related to patient-adapted hip joint implants | |
| CN108472049B (en) | Patient specific instruments and methods for total ankle replacement | |
| US6916325B2 (en) | Femoral sizing guide | |
| AU2013285195B9 (en) | A measuring instrument for use in orthopaedic surgery | |
| KR20170089878A (en) | A method and apparatus for joint reconstruction | |
| CN107106307B (en) | Determine the measurer of the femoral implant size of the knee-joint prosthesis of suitable patient | |
| CN104546234B (en) | Thighbone size measuring device | |
| JP2022153485A (en) | Gap gage and unit capable of checking flexion gap prior to cutting of posterior femur | |
| CN113456319B (en) | Test mold for knee joint replacement operation and revision operation thereof | |
| WO2012024319A2 (en) | Femoral cutting guide | |
| US20170027588A1 (en) | Combined Measured Resection Methods and Instruments for Knee Arthroplasty | |
| US10856887B2 (en) | Surgery device for performing surgery on the human knee | |
| CN213129737U (en) | Adjustable tibia osteotomy guiding device for artificial knee joint replacement surgery | |
| CN111839467A (en) | Knee joint stretches and bends clearance range finding balancer | |
| CN217488974U (en) | Measurer for combining straightening and buckling gaps | |
| TWI795335B (en) | Methods for Designing Surgical Instruments | |
| CN116492004A (en) | Multifunctional knee joint and femur four-in-one osteotomy device | |
| CN219516440U (en) | Knee joint surgical instrument | |
| CN211610108U (en) | Knee joint flexion clearance distance measurement balance positioning tool | |
| IT201700001219A1 (en) | INTRA-ARTICULAR ALIGNMENT EQUIPMENT / INSTRUMENT TIBIO / TARSICA | |
| CN114469252A (en) | Femoral medial posterior condylar osteotomy measurement positioning system | |
| CN113855342B (en) | Femoral condyle prosthesis | |
| CN113017943B (en) | Acetabular position change measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |