CN116712063A - Knee joint prosthesis model adapting measuring device - Google Patents
Knee joint prosthesis model adapting measuring device Download PDFInfo
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- CN116712063A CN116712063A CN202311001414.1A CN202311001414A CN116712063A CN 116712063 A CN116712063 A CN 116712063A CN 202311001414 A CN202311001414 A CN 202311001414A CN 116712063 A CN116712063 A CN 116712063A
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 34
- 230000006978 adaptation Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 31
- 210000003127 knee Anatomy 0.000 claims description 27
- 230000008093 supporting effect Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000002303 tibia Anatomy 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 210000001185 bone marrow Anatomy 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 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
- 230000007704 transition Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1076—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions inside body cavities, e.g. using catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1077—Measuring of profiles
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The application provides a knee joint prosthesis model adaptation measuring device, which comprises: a connecting rod; a platform part detachably mounted on the top end of the connecting rod; the patch structure is positioned below the platform part and is provided with a mounting hole, and the connecting rod is detachably assembled in the mounting hole; a first scale provided on the platform portion; the second scale is arranged on the patch structure and is opposite to the first scale; the platform part rotates relative to the patch structure so that the first scale and the different second scale are correspondingly arranged, or the second scale and the different first scale are correspondingly arranged. The technical scheme of the application effectively solves the problem that the position relationship between the tibia platform and the tibia marrow cavity in the related technology is inconvenient to measure.
Description
Technical Field
The application relates to the technical field of knee joint prostheses, in particular to a device for measuring a model fit of a knee joint prosthesis.
Background
After the primary knee joint prosthesis replacement is carried out on the patient, the knee joint prosthesis may be loosened or bone of the patient is damaged again due to long-term use or unexpected trauma of the patient, so that the pain of the knee joint of the patient is caused, and the patient loses walking function again when serious, so that the tibia side prosthesis needs to be repaired.
In the related art, when performing a tibial side revision of a knee joint, in order for a postoperative patient to recover better, accurate measurement of the positional relationship between a tibial plateau and a tibial bone marrow cavity of the patient is required.
Disclosure of Invention
The application mainly aims to provide a knee joint prosthesis model adapting measuring device which is used for solving the problem that the position relation between a tibia platform and a tibia marrow cavity in the related art is inconvenient to measure.
In order to achieve the above object, the present application provides a knee joint prosthesis model adaptation measuring device, comprising: a connecting rod; a platform part detachably mounted on the top end of the connecting rod; the patch structure is positioned below the platform part and is provided with a mounting hole, and the connecting rod is detachably assembled in the mounting hole; a first scale provided on the platform portion; the second scale is arranged on the patch structure and is opposite to the first scale; the platform part rotates relative to the patch structure so that the first scale and the different second scale are correspondingly arranged, or the second scale and the different first scale are correspondingly arranged.
Further, the one side that platform portion towards the connecting rod is provided with first adapter sleeve, and the one side that the connecting rod is towards platform portion is provided with the second adapter sleeve, and first adapter sleeve and the nested setting of second adapter sleeve, knee joint prosthesis fit the mould measuring device still include connection structure, and connection structure connects between first adapter sleeve and second adapter sleeve.
Further, the outside at the second adapter sleeve is established to first adapter sleeve cover, is provided with first connecting hole on the lateral wall of first adapter sleeve, is provided with the second connecting hole on the lateral wall of second adapter sleeve, and first connecting hole and second connecting hole set up relatively, and connection structure includes spacing subassembly and retaining member, and spacing subassembly includes first stopper, and when retaining member and connecting rod were connected, the retaining member can support first stopper and wear to establish in first connecting hole and second connecting hole to locking platform portion and connecting rod.
Further, the limiting assembly further comprises a first connecting portion and a supporting portion, the first connecting portion is connected between the supporting portion and the first limiting block, the first connecting portion extends along the height direction of the second connecting sleeve, and the supporting portion is supported at the bottom of the second connecting sleeve.
Further, a first guide inclined plane is arranged on one side, facing the first connecting part, of the first limiting block, and the distance between the first guide inclined plane and the bottom surface of the second connecting sleeve is gradually increased from the center of the second connecting sleeve to the outer peripheral direction of the second connecting sleeve.
Further, the limiting component further comprises a second limiting block and a second connecting portion, the second connecting portion is connected between the second limiting block and the supporting portion, the second connecting portion and the first connecting portion are arranged at intervals, a third connecting hole is further formed in the side wall of the first connecting sleeve, a fourth connecting hole is further formed in the side wall of the second connecting sleeve, the third connecting hole and the fourth connecting hole are arranged oppositely, and the locking piece drives the second limiting block to be inserted into the third connecting hole and the fourth connecting hole.
Further, the supporting part comprises an annular plate, the first connecting part and the second connecting part are symmetrically arranged, and/or a second guide inclined plane is arranged on one side of the second limiting block, which faces the second connecting part, and the distance between the second guide inclined plane and the bottom surface of the second connecting sleeve is gradually increased from the center of the second connecting sleeve to the outer peripheral direction of the second connecting sleeve.
Further, the retaining member includes latch head and screw thread post, and the inside of connecting rod is provided with the screw hole, and the screw thread post inserts to threaded hole, latch head and first guide slope butt cooperation.
Further, the bottom of the locking head is provided with a conical surface, and the diameter of the conical surface gradually increases from the connecting rod to the direction of the platform part.
Further, the locking piece still includes body of rod portion and backstop portion, and body of rod portion connects between backstop portion and screw thread post, is provided with horizontal spacing hole on the connecting rod, and horizontal spacing hole is linked together with the screw hole, and spacing subassembly still includes spacing post, and spacing post inserts in horizontal spacing hole, backstop portion and spacing cooperation of spacing post.
Further, the knee prosthesis model fitting measuring device further comprises a guiding structure, and the guiding structure is arranged between the connecting rod and the patch structure.
Further, the guide structure comprises a plurality of guide grooves and guide blocks, the guide grooves extend along the length direction of the connecting rod, one of the guide blocks and the guide grooves is arranged on the outer side wall of the connecting rod, and the other guide block and the guide groove is arranged inside the patch structure.
Further, the connecting rod comprises a first rod section and a second rod section, the first rod section and the second rod section are detachably connected, the first rod section is connected between the second rod section and the platform part, the first rod section is arranged in the patch structure in a penetrating mode, the first rod section comprises a straight rod and an eccentric rod, and the straight rod and the eccentric rod are alternatively connected between the platform part and the second rod section.
Further, a conical surface matching structure is arranged between the patch structure and the first rod section.
Further, the eccentric rod comprises a main body part and an eccentric part, the eccentric part is connected between the main body part and a platform part, a third scale is arranged on the side wall of the eccentric part, a fourth scale is arranged on the platform part, and the platform part and the eccentric rod rotate to enable the fourth scale and different third scales to be correspondingly arranged.
By applying the technical scheme of the application, the top end of the connecting rod is detachably provided with the platform part. A patch structure is arranged below the platform part, a mounting hole is formed in the patch structure, and the connecting rod is detachably mounted in the mounting hole. A first scale is provided on the platform portion. The patch structure is provided with a second scale which is arranged opposite to the first scale. When the platform part rotates relative to the patch structure, the first scale and the second different scale or the second scale and the first different scale are correspondingly arranged. Through the arrangement, the platform part and the connecting rod are detachably arranged, so that the knee joint prosthesis model adapting measuring device is simpler and more convenient to use. The setting of mounting hole is convenient for connect or dismantle connecting rod and patch structure, also makes the connecting rod can rotate in the mounting hole, and platform portion can take place relative rotation with patch structure promptly. When the platform part and the patch structure relatively rotate, the first scales can be correspondingly arranged with different second scales, or the second scales are correspondingly arranged with different first scales, so that the relative positions of the platform part and the patch structure can be determined according to the relative positions of the first scales and the second scales, and then the position relation between the tibia platform and the tibia marrow cavity is determined according to the relative positions of the platform part and the patch structure, namely, the tibia prosthesis is more in line with the physiological structure of a human body after being installed. Therefore, the technical scheme of the application effectively solves the problem that the position relationship between the tibia platform and the tibia marrow cavity in the related technology is inconvenient to measure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 shows a schematic perspective view of an embodiment of a knee prosthesis model adaption measuring device according to the application;
FIG. 2 is a schematic cross-sectional view of the knee prosthesis form fit measurement apparatus of FIG. 1 with an eccentric rod installed;
FIG. 3 is an exploded view showing a part of the structure of the knee prosthesis model adaption measuring device of FIG. 2;
FIG. 4 is a schematic perspective view showing an eccentric rod of the knee prosthesis form fit measuring device of FIG. 3;
FIG. 5 shows a schematic cross-sectional view of the eccentric rod of the knee prosthesis form fit measurement device of FIG. 4;
FIG. 6 shows a schematic exploded view of the knee prosthesis modular measurement apparatus of FIG. 1 using a straight rod without a second rod segment and patch structure installed;
FIG. 7 shows a schematic perspective view of the straight rod of the knee prosthesis form fitting measurement device of FIG. 6;
FIG. 8 shows a schematic perspective view of a platform portion of the knee prosthesis modular measurement apparatus of FIG. 1;
FIG. 9 shows a schematic cross-sectional view of a platform portion of the knee prosthesis modular measurement apparatus of FIG. 8;
FIG. 10 is a schematic perspective view of the patch structure of the knee prosthesis modular measurement apparatus of FIG. 1;
FIG. 11 is a schematic cross-sectional view of the patch structure of the knee prosthesis modular measurement apparatus of FIG. 10;
FIG. 12 is a schematic perspective view of a spacing assembly of the knee prosthesis form-fitting measurement apparatus of FIG. 1;
FIG. 13 is a schematic perspective view showing a locking member of the knee prosthesis form fit measurement apparatus of FIG. 1;
FIG. 14 is a schematic cross-sectional view of the knee prosthesis form fit measurement apparatus of FIG. 1 with a straight rod installed;
fig. 15 shows a schematic cross-sectional view of the knee prosthesis form fit measurement apparatus of fig. 1 from another perspective with a straight rod installed.
Wherein the above figures include the following reference numerals:
10. a connecting rod; 11. a second connecting sleeve; 111. a second connection hole; 112. a fourth connection hole; 12. a threaded hole; 13. a transverse limiting hole; 14. a first pole segment; 15. a second pole segment; 141. a straight rod; 142. an eccentric rod; 1421. a main body portion; 1422. a eccentric portion; 14221. a third scale; 20. a platform part; 21. a first connection sleeve; 211. a first connection hole; 212. a third connection hole; 22. a fourth scale; 30. a patch structure; 31. a mounting hole; 40. a first scale; 50. a second scale; 60. a connection structure; 61. a limit component; 611. a first limiting block; 6111. a first guiding inclined surface; 612. a first connection portion; 613. a support part; 6131. an annular plate; 614. a second limiting block; 6141. a second guiding inclined surface; 615. a second connecting portion; 616. a limit column; 62. a locking member; 621. a locking head; 6211. a conical surface; 622. a threaded column; 623. a rod body; 624. a stop portion; 70. a guide structure; 71. a guide groove; 72. and a guide block.
Detailed Description
The following description of the embodiments of the present application 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 application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1, 6 and 8, in the present embodiment, the knee prosthesis model adaptation measuring device includes a connection rod 10, a platform part 20, a first scale 40, and a second scale 50. The platform part 20 is detachably mounted on the top end of the connecting rod 10. The patch structure 30 is located below the platform part 20, the patch structure 30 has a mounting hole 31, and the connection rod 10 is detachably assembled in the mounting hole 31. A first scale 40 is provided on the platform 20. A second scale 50 is provided on the patch structure 30, the second scale 50 being disposed opposite the first scale 40. Wherein the platform portion 20 rotates relative to the patch structure 30 such that the first scale 40 and the different second scale 50 are disposed correspondingly, or the second scale 50 and the different first scale 40 are disposed correspondingly.
With the technical solution of the present embodiment, a platform portion 20 is detachably provided at the top end of the connecting rod 10. A patch structure 30 is provided below the platform part 20, a mounting hole 31 is provided on the patch structure 30, and the connecting rod 10 is detachably mounted in the mounting hole 31. The platform 20 is provided with a first scale 40. A second scale 50 is provided on the patch structure 30 opposite the first scale 40. When the platform 20 rotates relative to the patch structure 30, the first scale 40 and the different second scale 50 or the second scale 50 and the different first scale 40 are correspondingly arranged. Through the above arrangement, the platform part 20 and the connecting rod 10 are detachably arranged, so that the knee joint prosthesis model adapting measuring device is simpler and more convenient to use. The arrangement of the mounting holes 31 facilitates the connection or disassembly of the connecting rod 10 and the patch structure 30, and also enables the connecting rod 10 to rotate in the mounting holes 31, i.e. the platform part 20 can rotate relative to the patch structure 30. When the platform 20 and the patch structure 30 rotate relatively, the first scale 40 can be correspondingly set with the second scale 50, or the second scale 50 and the first scale 40 can be correspondingly set, so that the relative position of the platform 20 and the patch structure 30 can be determined according to the relative positions of the first scale 40 and the second scale 50, and then the position relationship between the tibial platform and the tibial bone marrow cavity can be determined according to the relative positions of the platform 20 and the patch structure 30, namely, the tibial prosthesis is more in line with the physiological structure of a human body after being installed. Therefore, the technical scheme of the embodiment effectively solves the problem that the position relation between the tibia platform and the tibia marrow cavity in the related technology is inconvenient to measure.
Specifically, in the present embodiment, the first scale 40 is a scale value, the second scale 50 is a scale line, and the scale line can correspond to different scale values. During measurement, the connecting rod 10 is turned so that the platform 20 can completely cover the osteotomy face.
Preferably, the connecting rod 10 is a tapered rod and the mounting hole 31 is a tapered hole. The diameter of the cross section of the tapered hole near the platform part 20 is larger than that of the cross section of the tapered hole far away from the platform part 20, namely, the tapered hole is in a shape of big-end-up, and the tapered rod is also arranged. The platform part 20 is provided with a threaded through hole for being connected with a holding device of the platform part 20, so that the platform part 20 can be taken out conveniently.
As shown in fig. 2, 3, 6, 8, 9 and 14, in this embodiment, a first connecting sleeve 21 is disposed on a side of the platform portion 20 facing the connecting rod 10, a second connecting sleeve 11 is disposed on a side of the connecting rod 10 facing the platform portion 20, the first connecting sleeve 21 and the second connecting sleeve 11 are nested, and the knee joint prosthesis model adapting measuring device further includes a connecting structure 60, where the connecting structure 60 is connected between the first connecting sleeve 21 and the second connecting sleeve 11. The nesting of the first connection sleeve 21 and the second connection sleeve 11 enables the platform 20 and the connection rod 10 to be connected. The connecting structure 60 connects the connecting rod 10 and the platform part 20 through the first connecting sleeve 21 and the second connecting sleeve 11, so that the connecting rod 10 and the platform part 20 can synchronously rotate relative to the patch structure 30, and the situation that the connecting rod 10 and the platform part 20 fall off to influence the use of the knee joint prosthesis model adapting measuring device is avoided.
Preferably, a limiting plate is further disposed on the platform portion 20 outside the first connecting sleeve 21, and a limiting opening corresponding to the limiting plate is disposed on the patch structure 30, so that a relative rotation range between the platform portion 20 and the patch structure 30 can be limited, and excessive rotation of the platform portion 20 and the patch structure 30 is avoided. The number of limiting plates is a plurality of, specifically, in this embodiment, the number of limiting plates is two, and corresponding, the number of limiting openings is also two, has obtuse included angle between two limiting plates.
Specifically, the end of the platform part 20 far away from the first connecting sleeve is further provided with a first boss, a second boss and a third boss, and the first boss and the second boss are in arc transition towards one side of the center of the platform part. And a convex edge is arranged on one side of the third boss, which faces the center of the platform part. A groove is also provided in the first connecting sleeve 21 to enable the second connecting sleeve 11 to be inserted therein.
As shown in fig. 2 and 14, in the present embodiment, the first connecting sleeve 21 is sleeved on the outer side of the second connecting sleeve 11, the first connecting hole 211 is provided on the side wall of the first connecting sleeve 21, the second connecting hole 111 is provided on the side wall of the second connecting sleeve 11, the first connecting hole 211 and the second connecting hole 111 are oppositely arranged, the connecting structure 60 includes a limiting component 61 and a locking member 62, the limiting component 61 includes a first limiting block 611, and when the locking member 62 is connected with the connecting rod 10, the locking member 62 can abut against the first limiting block 611 to penetrate through the first connecting hole 211 and the second connecting hole 111, so as to lock the platform part 20 and the connecting rod 10. The first connecting hole 211 and the second connecting hole 111 are oppositely arranged, so that when the locking piece 62 abuts against the first limiting block 611, the first limiting block 611 can penetrate through the first connecting sleeve 21 and the second connecting sleeve 11 to connect the platform part 20 and the connecting rod 10, and when the first limiting block 611 is completely located in the space of the first connecting hole 211 and the second connecting hole 111, the locking of the platform part 20 and the connecting rod 10 is realized, the connecting rod 10 and the platform part 20 are prevented from being separated, and the use of the knee joint prosthesis model adapting measuring device is prevented from being influenced.
As shown in fig. 3, 6 and 12, in the present embodiment, the limiting assembly 61 further includes a first connecting portion 612 and a supporting portion 613, the first connecting portion 612 is connected between the supporting portion 613 and the first limiting block 611, the first connecting portion 612 extends along the height direction of the second connecting sleeve 11, and the supporting portion 613 is supported at the bottom of the second connecting sleeve 11. The first connecting portion 612 connects supporting portion 613 and first stopper 611 for the supporting force that the supporting portion 613 was given in second adapter sleeve 11 bottom transmission can transmit to first stopper 611, balances with the extrusion force that retaining member 62 transmitted to first stopper 611, and then makes connecting rod 10 and platform portion 20 can realize relative position fixing, and connecting rod 10 can and platform portion 20 rotate for patch structure 30 synchronization promptly, is convenient for knee joint prosthesis die fit measuring device's use.
Of course, in the embodiment not shown in the drawings, the first connecting portion 612 and the supporting portion 613 may not be provided, which makes the overall structure of the spacing assembly 61 simpler.
As shown in fig. 12, in the present embodiment, a first guide inclined surface 6111 is provided on a side of the first stopper 611 facing the first connecting portion 612, and a distance between the first guide inclined surface 6111 and a bottom surface of the second connecting sleeve 11 gradually increases from a center of the second connecting sleeve 11 to an outer circumferential direction of the second connecting sleeve 11. The above-mentioned setting for after the retaining member 62 screw in connecting rod 10, retaining member 62 can with first direction inclined plane 6111 butt, retaining member 62 can extrude first direction inclined plane 6111 promptly, make first stopper 611 can get into first connecting hole 211 and second connecting hole 111, realize the connection of platform portion 20 and connecting rod 10, simultaneously under the joint support effect of first connecting hole 211 bottom surface, second connecting hole 111 bottom surface and second adapter sleeve 11 bottom, make spacing subassembly 61 can avoid to removing to the direction of keeping away from second adapter sleeve 11 bottom, realize the locking of platform portion 20 and connecting rod 10.
As shown in fig. 3, 6 and 12, in the present embodiment, the limiting component 61 further includes a second limiting block 614 and a second connecting portion 615, the second connecting portion 615 is connected between the second limiting block 614 and the supporting portion 613, the second connecting portion 615 and the first connecting portion 612 are arranged at intervals, a third connecting hole 212 is further arranged on a side wall of the first connecting sleeve 21, a fourth connecting hole 112 is further arranged on a side wall of the second connecting sleeve 11, the third connecting hole 212 and the fourth connecting hole 112 are oppositely arranged, and the locking member 62 drives the second limiting block 614 to be inserted into the third connecting hole 212 and the fourth connecting hole 112. The second stopper 614 can enter the third and fourth coupling holes 212 and 112 under the pressing of the locking member 62, and further couple the platform part 20 and the coupling rod 10. The second connecting portion 615 enables the extrusion force transmitted to the second limiting block 614 by the locking piece 62 to be transmitted to the supporting portion 613, and then the extrusion force is transmitted to the second connecting portion 615 through the bottom of the second connecting sleeve 11 abutting against the supporting portion 613, so that the stress of the limiting assembly 61 is more uniform, and damage to the limiting assembly 61 in the use process is avoided. The first connecting portion 612 and the second connecting portion 615 are arranged at intervals, so that the stress of the limiting assembly 61 is more uniform, and the connection between the platform portion 20 and the connecting rod 10 is more stable.
Of course, in an embodiment not shown in the drawings, the second connection portion 615 may not be provided.
In particular, in an embodiment not shown in the figures, the second connection hole 111 and the fourth connection hole 112 may be provided as inner grooves on the side wall of the second connection sleeve 11, which makes the installation of the first stopper 611 and the second stopper 614 easier.
As shown in fig. 12, in the present embodiment, the supporting portion 613 includes an annular plate 6131, the first connecting portion 612 and the second connecting portion 615 are symmetrically disposed, a second guide inclined surface 6141 is provided on a side of the second stopper 614 facing the second connecting portion 615, and a distance between the second guide inclined surface 6141 and a bottom surface of the second connecting sleeve 11 gradually increases from a center of the second connecting sleeve 11 to an outer circumferential direction of the second connecting sleeve 11. The annular plate 6131 is provided so that the locking member 62 can pass through the supporting portion 613 to connect the platform portion 20 and the connecting rod 10. The first connecting portion 612 and the second connecting portion 615 are symmetrically arranged, so that the stress of the limiting assembly 61 is more uniform, and the situation that the limiting assembly 61 is damaged due to stress concentration during use is avoided. After the locking piece 62 is screwed into the connecting rod 10 due to the arrangement of the second guide inclined surface 6141, the locking piece 62 can be abutted with the second guide inclined surface 6141, namely, the locking piece 62 can squeeze the second guide inclined surface 6141, so that the second limiting block 614 can enter the third connecting hole 212 and the fourth connecting hole 112 to connect the platform part 20 and the connecting rod 10, and meanwhile, under the joint supporting effect of the bottom surface of the third connecting hole 212, the bottom surface of the fourth connecting hole 112 and the bottom of the second connecting sleeve 11, the limiting assembly 61 can be prevented from moving in the direction away from the bottom of the second connecting sleeve 11, and locking of the platform part 20 and the connecting rod 10 is achieved.
Preferably, there is a circular arc transition between the annular plate 6131 and the first and second connection portions 612 and 615. A third guiding inclined plane and a fourth guiding inclined plane are arranged in the direction that the first limiting block 611 is far away from the first connecting portion 612, and the third guiding inclined plane and the fourth guiding inclined plane are respectively arranged on one side of the first limiting block 611 far away from the bottom of the second connecting sleeve 11 and one side of the first limiting block 611 close to the bottom of the second connecting sleeve 11. A fifth guiding inclined plane and a sixth guiding inclined plane are arranged in the direction of the second limiting block 614 away from the second connecting part 615, and the fifth guiding inclined plane and the sixth guiding inclined plane are respectively arranged on one side of the second limiting block 614 away from the bottom of the second connecting sleeve 11 and one side of the second limiting block 614 close to the bottom of the second connecting sleeve 11.
As shown in fig. 2, 3, 6, 13 and 14, in the present embodiment, the locking member 62 includes a locking head 621 and a threaded post 622, the interior of the connecting rod 10 is provided with a threaded hole 12, the threaded post 622 is inserted into the threaded hole 12, and the locking head 621 is in abutting engagement with the first guide inclined surface 6111. The locking head 621 facilitates the mounting of the locking member 62 into the threaded bore 12, i.e., the threaded post 622 is threaded into the threaded bore 12. The locking head 621 and the first guiding inclined surface 6111 are in abutting fit, so that the first limiting block 611 can enter the first connecting hole 211 and the second connecting hole 111 under the extrusion of the locking head 621, and the connection between the platform part 20 and the connecting rod 10 is realized.
Specifically, the locking head 621 also abuts against the second guide slope 6141. The locking head 621 can simultaneously press the first guide inclined surface 6111 and the second guide inclined surface 6141, so that the first stopper 611 can enter the first connecting hole 211 and the second connecting hole 111, and simultaneously, the second stopper 614 can enter the third connecting hole 212 and the fourth connecting hole 112, so that the connecting process of the platform part 20 and the connecting rod 10 is smoother.
As shown in fig. 2, 3, 6, 13 and 14, in the present embodiment, the bottom of the locking head 621 is provided with a tapered surface 6211, and the diameter of the tapered surface 6211 gradually increases from the connecting rod 10 to the platform 20. The conical surface 6211 is provided, so that the contact area between the locking head 621 and the first guide inclined surface 6111 and the second guide inclined surface 6141 is larger, that is, the locking head 621 can press the first limiting block 611 and the second limiting block 614 more effectively, and the connection between the platform part 20 and the connecting rod 10 is realized.
As shown in fig. 2, 3, 6, 13 and 14, in this embodiment, the locking member 62 further includes a rod body 623 and a stop 624, the rod body 623 is connected between the stop 624 and the threaded post 622, the connecting rod 10 is provided with a transverse limiting hole 13, the transverse limiting hole 13 is communicated with the threaded hole 12, the limiting component 61 further includes a limiting post 616, the limiting post 616 is inserted into the transverse limiting hole 13, and the stop 624 is in limiting fit with the limiting post 616. The rod body 623 connects the stop portion 624 and the threaded post 622, and further enables the stop portion 624 to extend into a vertical space where the stop portion 624 is located through the stop post 616, so that the stop post 616 can stop the stop portion 624 from falling off from the connecting rod 10. The transverse limiting hole 13 is communicated with the threaded hole 12, so that the limiting column 616 can be inserted into the space where the threaded hole 12 is located through the transverse limiting hole 13, and the limiting column 616 can be in limiting fit with the stop portion 624.
Specifically, the maximum external dimension of the stop portion 624 is smaller than the minor diameter of the thread post 622, and the maximum external dimension of the rod body portion 623 is smaller than the maximum external dimension of the stop portion 624, which facilitates the installation of the locking member 62 inside the connecting rod 10 and the limit fitting of the limit post 616 with the stop portion 624.
As shown in fig. 1, 3, 4, 6, 7 and 11, in the present embodiment, the knee prosthesis mode-adapting measuring device further includes a guide structure 70, and the guide structure 70 is disposed between the connection rod 10 and the patch structure 30. The guide structure 70 provides a guiding function for the connecting rod 10 when it is mounted in connection with the patch structure 30.
As shown in fig. 1, 3, 4, 6, 7, 11, and 15, in the present embodiment, the guide structure 70 includes a plurality of guide grooves 71 and guide blocks 72, the plurality of guide grooves 71 extend in the length direction of the connecting rod 10, one of the guide blocks 72 and the plurality of guide grooves 71 is provided on the outer side wall of the connecting rod 10, and the other of the guide blocks 72 and the plurality of guide grooves 71 is provided inside the patch structure 30. The guide groove 71 and the guide block 72 can be matched with each other, so that uncontrolled rotation between the connecting rod 10 and the patch structure 30 during the use of the knee joint prosthesis model adapting measuring device is avoided, and the use of the knee joint prosthesis model adapting measuring device is influenced.
Specifically, the guide structure 70 further includes insertion rods, the insertion rods and the guide blocks 72 are disposed in a one-to-one correspondence, a first insertion hole for the insertion rods to pass through is disposed on the guide block 72, and a second insertion hole for the insertion of the insertion rods is disposed on the patch structure 30 for connecting the guide block 72 with the patch structure 30. The patch structure 30 is also provided with through holes for mounting and receiving the guide blocks 72.
The guide block 72 includes a guide portion and an installation portion, the plugging rod is connected to the installation portion, the end portion of the guide portion, which is far away from the installation portion, is provided with a tip portion, the area of the vertical section of the installation portion is larger than that of the vertical section of the guide portion, the installation of the guide block is performed from the outer side of the patch structure 30, that is, a stepped hole is formed in the patch structure 30, and the guide block 72 is inserted into the stepped hole.
As shown in fig. 1 to 7 and 14, in the present embodiment, the connecting rod 10 includes a first rod section 14 and a second rod section 15, the first rod section 14 and the second rod section 15 are detachably connected, the first rod section 14 is connected between the second rod section 15 and the platform portion 20, the first rod section 14 is penetrated in the patch structure 30, the first rod section 14 includes a straight rod 141 and an eccentric rod 142, and the straight rod 141 and the eccentric rod 142 are alternatively connected between the platform portion 20 and the second rod section 15. The first and second pole segments 14, 15 are detachably connected to facilitate use of the knee prosthesis model fitting measuring device. The second rod segment 15 allows the connecting rod 10 to be inserted deeper into the tibial cavity, thereby allowing the relative positions of the tibial plateau and the tibial cavity measured by the knee prosthesis mode-adapting measuring device to be more accurate. The first pole segment 14 is threaded within the patch structure 30 such that the connecting rod 10 can be connected with the patch structure 30. The straight rod 141 and the eccentric rod 142 are alternatively connected between the platform 20 and the second rod segment 15, so that the knee joint prosthesis model adapting measuring device can measure the relative position relationship between the tibial plateau and the tibial marrow cavity with different positions, i.e. the knee joint prosthesis model adapting measuring device has better universality.
In particular, the first pole segment 14 and the second pole segment 15 are connected by threads. A first planar portion is provided on the first pole segment 14 to facilitate gripping of the first pole segment and installation of the connecting pole. A second planar portion is provided on the second shaft segment 15 such that the second shaft segment 15 does not rotate after insertion of the second shaft segment 15 into the tibial intramedullary canal.
As shown in fig. 10, in this embodiment, a tapered fit is provided between the patch structure 30 and the first pole segment 14. The above arrangement makes the fitting of the patch structure 30 and the first pole segment 14 tighter, and avoids the influence on the use of the knee joint prosthesis die-adapting measuring device because the first pole segment 14 and the patch structure 30 cannot be fitted.
Preferably, the tapered mating structure includes a first tapered structure disposed on the patch structure 30 and a second tapered structure disposed on the first pole segment 14, although the second tapered structure may be omitted. In embodiments not shown in the figures, the tapered mating feature may also be a mating rounded feature provided between the patch feature 30 and the first pole segment 14.
As shown in fig. 2 to 5, in the present embodiment, the eccentric rod 142 includes a main body portion 1421 and an eccentric portion 1422, the eccentric portion 1422 is connected between the main body portion 1421 and the platform portion 20, a third scale 14221 is provided on a sidewall of the eccentric portion 1422, a fourth scale 22 is provided on the platform portion 20, and the platform portion 20 and the eccentric rod 142 are rotated so that the fourth scale 22 and the different third scale 14221 are correspondingly provided. The provision of the third graduation 14221 and the fourth graduation 22 facilitates determination of the relative position of the platform 20 and the tibial bone marrow cavity, enabling more accurate measurements by the knee prosthesis model-adapting measurement device.
Specifically, the working procedure of the knee joint prosthesis model adaptation measuring device of the embodiment is as follows: after the tibia is osteotomy, the patch structure 30 is inserted into the intramedullary canal, the connecting rod 10 and the platform part 20 are connected together, the connecting rod 10 is inserted into the mounting hole 31 of the patch structure 30, the platform part 20 completely covers the osteotomy face by rotating the connecting rod 10, and the connecting rod 10 and the patch structure 30 are knocked together by a tool, namely, are connected together by a taper hole and a taper rod. This allows to obtain the first and second graduations 40, 50 obtaining graduation values, and finally to take out the patch structure 30 and the connecting rod 10, and to adjust the actual implant prosthesis according to the obtained graduation values.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (15)
1. A knee prosthesis form fitting measurement device, comprising:
a connecting rod (10);
a platform part (20) detachably mounted on the top end of the connecting rod (10);
a patch structure (30) located below the platform part (20), the patch structure (30) having a mounting hole (31), the connecting rod (10) being detachably fitted in the mounting hole (31);
a first scale (40) provided on the platform (20);
a second scale (50) disposed on the patch structure (30), the second scale (50) and the first scale (40) being disposed opposite;
wherein the platform part (20) rotates relative to the patch structure (30) so that the first scale (40) and the different second scale (50) are correspondingly arranged, or the second scale (50) and the different first scale (40) are correspondingly arranged.
2. The knee joint prosthesis die adapting measurement device according to claim 1, characterized in that a side of the platform part (20) facing the connecting rod (10) is provided with a first connecting sleeve (21), a side of the connecting rod (10) facing the platform part (20) is provided with a second connecting sleeve (11), the first connecting sleeve (21) and the second connecting sleeve (11) are nested, the knee joint prosthesis die adapting measurement device further comprises a connecting structure (60), and the connecting structure (60) is connected between the first connecting sleeve (21) and the second connecting sleeve (11).
3. The knee joint prosthesis die adapting measurement device according to claim 2, wherein the first connecting sleeve (21) is sleeved on the outer side of the second connecting sleeve (11), a first connecting hole (211) is formed in the side wall of the first connecting sleeve (21), a second connecting hole (111) is formed in the side wall of the second connecting sleeve (11), the first connecting hole (211) and the second connecting hole (111) are oppositely arranged, the connecting structure (60) comprises a limiting assembly (61) and a locking member (62), the limiting assembly (61) comprises a first limiting block (611), and when the locking member (62) is connected with the connecting rod (10), the locking member (62) can abut against the first limiting block (611) to penetrate through the first connecting hole (211) and the second connecting hole (111) so as to lock the platform part (20) and the connecting rod (10).
4. A knee joint prosthesis form fitting measurement device according to claim 3, wherein the limiting assembly (61) further comprises a first connection portion (612) and a support portion (613), the first connection portion (612) being connected between the support portion (613) and the first limiting block (611), the first connection portion (612) extending in the height direction of the second connecting sleeve (11), the support portion (613) being supported at the bottom of the second connecting sleeve (11).
5. The knee joint prosthesis model adaptation measuring device according to claim 4, wherein a first guiding inclined plane (6111) is arranged on one side of the first limiting block (611) facing the first connecting part (612), and the distance between the first guiding inclined plane (6111) and the bottom surface of the second connecting sleeve (11) is gradually increased from the center of the second connecting sleeve (11) to the peripheral direction of the second connecting sleeve (11).
6. The knee joint prosthesis die adapting measurement device according to claim 4, wherein the limiting assembly (61) further comprises a second limiting block (614) and a second connecting portion (615), the second connecting portion (615) is connected between the second limiting block (614) and the supporting portion (613), the second connecting portion (615) and the first connecting portion (612) are arranged at intervals, a third connecting hole (212) is further formed in the side wall of the first connecting sleeve (21), a fourth connecting hole (112) is further formed in the side wall of the second connecting sleeve (11), the third connecting hole (212) and the fourth connecting hole (112) are arranged oppositely, and the locking piece (62) drives the second limiting block (614) to be inserted into the third connecting hole (212) and the fourth connecting hole (112).
7. The knee joint prosthesis die adapting measurement device according to claim 6, characterized in that the support portion (613) comprises an annular plate (6131), the first connection portion (612) and the second connection portion (615) are symmetrically arranged, and/or a second guiding inclined surface (6141) is arranged on one side of the second limiting block (614) facing the second connection portion (615), and a distance between the second guiding inclined surface (6141) and a bottom surface of the second connection sleeve (11) is gradually increased from a center of the second connection sleeve (11) to an outer circumference direction of the second connection sleeve (11).
8. The knee joint prosthesis die adapting measurement device according to claim 5, wherein the locking member (62) comprises a locking head (621) and a threaded post (622), a threaded hole (12) is provided inside the connecting rod (10), the threaded post (622) is inserted into the threaded hole (12), and the locking head (621) is in abutting fit with the first guiding inclined surface (6111).
9. The knee joint prosthesis model fitting measurement device according to claim 8, wherein the bottom of the locking head (621) is provided with a conical surface (6211), the diameter of the conical surface (6211) gradually increasing in the direction from the connecting rod (10) to the platform (20).
10. The knee joint prosthesis die adapting measurement device according to claim 8, wherein the locking member (62) further comprises a rod body portion (623) and a stop portion (624), the rod body portion (623) is connected between the stop portion (624) and the threaded post (622), a transverse limiting hole (13) is formed in the connecting rod (10), the transverse limiting hole (13) is communicated with the threaded hole (12), the limiting assembly (61) further comprises a limiting post (616), the limiting post (616) is inserted into the transverse limiting hole (13), and the stop portion (624) is in limiting fit with the limiting post (616).
11. The knee prosthesis form fitting measurement device according to claim 1, further comprising a guiding structure (70), the guiding structure (70) being arranged between the connecting rod (10) and the patch structure (30).
12. The knee prosthesis form fitting measurement device according to claim 11, wherein the guide structure (70) comprises a plurality of guide grooves (71) and guide blocks (72), a plurality of the guide grooves (71) extending in a length direction of the connecting rod (10), one of the guide blocks (72) and the guide grooves (71) being provided on an outer side wall of the connecting rod (10), the other of the guide blocks (72) and the guide grooves (71) being provided inside the patch structure (30).
13. The knee prosthesis form fitting measurement device of claim 9, wherein the connecting rod (10) comprises a first rod segment (14) and a second rod segment (15), the first rod segment (14) and the second rod segment (15) being detachably connected, the first rod segment (14) being connected between the second rod segment (15) and the platform portion (20), the first rod segment (14) being threaded into the patch structure (30), the first rod segment (14) comprising a straight rod (141) and an eccentric rod (142), the straight rod (141) and the eccentric rod (142) being alternatively connected between the platform portion (20) and the second rod segment (15).
14. The knee prosthesis form fitting measurement device of claim 13, wherein a tapered fit is provided between the patch (30) and the first stem section (14).
15. The knee prosthesis die adapting measurement device according to claim 13, wherein the eccentric rod (142) comprises a main body portion (1421) and an eccentric portion (1422), the eccentric portion (1422) is connected between the main body portion (1421) and the platform portion (20), a third scale (14221) is provided on a side wall of the eccentric portion (1422), a fourth scale (22) is provided on the platform portion (20), and the platform portion (20) and the eccentric rod (142) rotate to enable the fourth scale (22) and the third scale (14221) to be correspondingly arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311001414.1A CN116712063B (en) | 2023-08-09 | 2023-08-09 | Knee joint prosthesis model adapting measuring device |
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| CN202311001414.1A CN116712063B (en) | 2023-08-09 | 2023-08-09 | Knee joint prosthesis model adapting measuring device |
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| CN116712063B CN116712063B (en) | 2023-11-24 |
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| EP2702962A1 (en) * | 2012-08-30 | 2014-03-05 | Biomet Manufacturing LLC | Knee component having orbital interface boss |
| US20150250601A1 (en) * | 2013-12-30 | 2015-09-10 | Shoulder Options, Inc. | Instruments and techniques for orienting prosthesis components for joint prostheses |
| CN110063821A (en) * | 2019-05-22 | 2019-07-30 | 天津正天医疗器械有限公司 | A kind of proximal end forming device |
| CN110623775A (en) * | 2018-06-25 | 2019-12-31 | 苏州微创关节医疗科技有限公司 | Rotary alignment device for tibial prosthesis |
| CN111035481A (en) * | 2019-12-25 | 2020-04-21 | 北京爱康宜诚医疗器材有限公司 | Prosthetic body and have its shin bone structure |
| CN112402074A (en) * | 2020-11-17 | 2021-02-26 | 宽岳医疗器材（苏州）有限公司 | Tibia support trial module |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2702962A1 (en) * | 2012-08-30 | 2014-03-05 | Biomet Manufacturing LLC | Knee component having orbital interface boss |
| US20150250601A1 (en) * | 2013-12-30 | 2015-09-10 | Shoulder Options, Inc. | Instruments and techniques for orienting prosthesis components for joint prostheses |
| CN110623775A (en) * | 2018-06-25 | 2019-12-31 | 苏州微创关节医疗科技有限公司 | Rotary alignment device for tibial prosthesis |
| CN110063821A (en) * | 2019-05-22 | 2019-07-30 | 天津正天医疗器械有限公司 | A kind of proximal end forming device |
| CN111035481A (en) * | 2019-12-25 | 2020-04-21 | 北京爱康宜诚医疗器材有限公司 | Prosthetic body and have its shin bone structure |
| CN112402074A (en) * | 2020-11-17 | 2021-02-26 | 宽岳医疗器材（苏州）有限公司 | Tibia support trial module |
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| CN116712063B (en) | 2023-11-24 |
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