CN112674918A - Radian femoral stem checking fixture - Google Patents
Radian femoral stem checking fixture Download PDFInfo
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- CN112674918A CN112674918A CN202011355991.7A CN202011355991A CN112674918A CN 112674918 A CN112674918 A CN 112674918A CN 202011355991 A CN202011355991 A CN 202011355991A CN 112674918 A CN112674918 A CN 112674918A
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Abstract
The application relates to a radian femoral stem checking fixture which comprises a measuring rod, a limiting rod and a guiding and positioning assembly; a measuring rod: at least a first measuring area and a second measuring area are formed, and the two measuring areas respectively correspond to the outline of one side of a femoral stem under the minimum standard radian standard and the outline of the other side of the femoral stem under the maximum standard radian standard; limiting rods: the limiting rod is fixedly arranged on the guide positioning component, one side wall of the limiting rod is over against a measuring area corresponding to the profile of one side of the femoral stem under the minimum standard radian standard, and the side wall forms a limiting surface; guiding and positioning components: the guide positioning component is fixedly connected with the measuring rod, and is provided with a thread locking device for fixing the position of the limiting rod; the two ends of the measuring rod and the two ends of the limiting rod are distributed in four rectangular sharp-angle shapes. This application has the qualified effect whether can accurate survey femoral stem.
Description
Technical Field
The application relates to the field of medical equipment, especially, relate to a radian femoral stem examines utensil.
Background
The revision type femoral stem comprises a radian femoral stem designed according to the physiological radian of a femoral medullary cavity of Chinese, a common femoral stem radian detection tool in the market at present is an arc steel plate with a single side consistent with the standard radian of the femoral stem, namely, the femoral stem is attached to the arc steel plate, and whether the femoral stem meets the requirement or not is judged by visually observing a gap between the femoral stem and the arc steel plate.
Aiming at the related technologies, the inventor thinks that the checking fixture can only estimate whether the bent handle is qualified or not by visual inspection of the fitting degree of the prosthesis and the radian steel plate, and the judgment of human eyes and experience has more unstable factors and the detection accuracy is too low.
Disclosure of Invention
In order to make the testing result of femoral stem more accurate, this application provides a radian femoral stem examines utensil.
The application provides a pair of utensil is examined to radian femoral stem adopts following technical scheme:
a radian femoral stem checking fixture comprises a measuring rod, a limiting rod and a guiding and positioning assembly; a measuring rod: at least a first measuring area and a second measuring area are formed, and the two measuring areas respectively correspond to the outline of one side of a femoral stem under the minimum standard radian standard and the outline of the other side of the femoral stem under the maximum standard radian standard; limiting rods: the limiting rod is fixedly arranged on the guide positioning component, one side wall of the limiting rod is over against a measuring area corresponding to the profile of one side of the femoral stem under the minimum standard radian standard, and the side wall forms a limiting surface; guiding and positioning components: the guide positioning component is fixedly connected with the measuring rod, and is provided with a thread locking device for fixing the position of the limiting rod; the two ends of the measuring rod and the two ends of the limiting rod are distributed in four rectangular sharp-angle shapes.
By adopting the technical scheme, the radian of the side wall of the second measuring area, which is just opposite to the limiting rod, is the standard radian of the femoral stem and the minimum size radian in the qualified range, and the side wall for internal detection of the first measuring area is the standard radian of the femoral stem and the maximum size radian in the qualified range. The user measures the difference distance between the near end and the far end, the limiting rod is slid to the position which is away from the measuring rod by the measured difference distance, the position of the limiting rod is fixed through the thread locking device, then the near end of the femoral stem is attached to the top end of the measuring area II, the femoral stem is moved towards the measuring area II to be tightly propped against the side wall of the measuring area II, which is opposite to the limiting rod, if the far end of the femoral stem cannot enter the area between the limiting rod and the measuring rod through the bottom end of the limiting rod, the radian of the femoral stem is smaller and exceeds the qualified range, and the femoral stem is unqualified; if the distal end of this femoral stem can get into the region between gag lever post and the measuring stick, the distal end of gag lever post can not lead to the fact the hindrance to the distal end of femoral stem promptly, laminate the near-end of femoral stem and the top of measuring district one again, if the distal end of femoral stem and the lateral wall distal end butt of measuring district one, and leave the space between the lateral wall of femoral stem and measuring district one, then this femoral stem is unqualified, if there is not space between the two or the distal end of femoral stem can not the butt on the lateral wall of measuring district one, then this femoral stem is qualified.
Optionally, the guiding and positioning assembly comprises a fixed rod fixedly connected with the measuring rod, an adjusting rod fixedly connected with the limiting rod and a connecting rod fixedly connected with the fixed rod, the adjusting rod is connected to the connecting rod in a sliding manner, and the thread locking device is arranged on the adjusting rod or the connecting rod.
Through adopting above-mentioned technical scheme, be connected gag lever post and measuring stick through dead lever, connecting rod and regulation pole, when removing the position of gag lever post, through adjust the pole on the connecting rod slide can, then through the position of screw thread locking device fixed regulation pole, just can fix the position of gag lever post.
Optionally, the thread locking device includes a bolt in threaded connection with the adjusting rod, and when the thread tail end of the bolt abuts against the connecting rod, a space is left between the bottom surface of the head of the bolt and the adjusting rod.
By adopting the technical scheme, the bolt is simple in structure, wide in source and convenient to use; because the femoral stem to be measured is inevitably contacted with the limiting rod and the measuring rod when in use, the limiting rod needs to be fixed in order to ensure the measuring precision; when the position of gag lever post is fixed in needs, only need screw up the bolt to the screw thread tail end of bolt support tightly on the connecting rod, just can increase the frictional force between bolt and the connecting rod, hinder promptly and adjust the slip trend of pole for the connecting rod, fix the gag lever post in current position department.
Optionally, the connecting rod is square rod-shaped, a guide hole matched with the profile of the connecting rod is formed in the adjusting rod, and when the thread tail end of the bolt abuts against the side wall of the connecting rod, the thread tail end of the bolt is located inside the guide hole.
Through adopting above-mentioned technical scheme, the connecting rod of square bar form possess a plurality of planar lateral walls, can reduce down with the guiding hole cooperation and adjust the pole and take place to rotate for the connecting rod for adjust the pole and can be more stable, planar connecting rod lateral wall simultaneously can be better with the screw thread tail end butt of bolt, increase area of contact has increased frictional force between the two promptly, the gag lever post can be more stable stop in current position department.
Optionally, the measuring rod is provided with a plurality of first measuring areas and second measuring areas, and the side wall of the limiting rod, which faces the measuring area corresponding to the profile of one side of the femoral stem under the minimum standard radian standard, is stepped to form a plurality of different limiting surfaces corresponding to different measuring areas respectively.
Through adopting above-mentioned technical scheme, through setting up multiunit measuring area one and measuring area two, a plurality of spacing faces have been set up simultaneously, can detect different types of femoral stems through an utensil of examining, can set up the standard radian of the femoral stem of the classification commonly used and minimum dimension radian in qualified scope into the lateral wall radian of measuring area one promptly, measuring area two and spacing face also set up the shape that matches with it, only need select different groups of measuring area one when using this utensil, measuring area two and spacing face can.
Optionally, the first measuring area and the second measuring area are arranged on different side walls of the measuring rod.
By adopting the technical scheme, the working personnel can distinguish the first measuring area and the second measuring area more clearly and conveniently, the selection can be faster and more accurate when the user selects, and the possibility of measuring result errors caused by the selection errors of the user is reduced.
Optionally, a ruler for measuring the shortest linear distance between the measuring rod and the limiting rod is fixedly arranged on the measuring rod or the limiting rod.
Through adopting above-mentioned technical scheme, can let the more accurate position that should fix of finding the gag lever post of user through the scale, use more convenience simultaneously.
Optionally, the first measuring area and the second measuring area are both arranged towards the limiting surface.
Through adopting above-mentioned technical scheme, after the user detects the femoral stem through measurement area two and spacing face, just need use measurement area one to detect, if the opening direction of measurement area one is opposite with the opening direction of measurement area two, then need the user to rotate the femoral stem and place the femoral stem in measurement area one again, if the opening of measurement area one is the same with the opening orientation of measurement area two, then can the person of facilitating the use greatly, reduced the user and fallen the near-end and the distal end that turn the femoral stem at the in-process of upset femoral stem and caused the wrong possibility of measuring result.
In summary, the present application includes at least one of the following beneficial technical effects:
1. firstly, measuring the difference distance between the standard radian of the femoral stem and the near end and the far end of the minimum-size radian in a qualified range, sliding the limiting rod to a position which is away from the measuring rod by the measured difference distance, fixing the position of the limiting rod through a thread locking device, then enabling the near end of the femoral stem to be attached to the top end of the measuring area II, moving the femoral stem into the measuring area II to be tightly abutted against the side wall of the measuring area II, which is opposite to the limiting rod, if the far end of the femoral stem cannot enter the area between the limiting rod and the measuring rod through the bottom end of the limiting rod, enabling the radian of the femoral stem to be smaller and exceed the qualified range, and enabling the femoral stem to be unqualified; if the far end of the femoral stem can enter the area between the limiting rod and the measuring rod, namely the far end of the limiting rod cannot obstruct the far end of the femoral stem, then the near end of the femoral stem is attached to the top end of the first measuring area, if the far end of the femoral stem abuts against the far end of the side wall of the first measuring area and a gap is reserved between the femoral stem and the side wall of the first measuring area, the femoral stem is unqualified, and if no gap exists between the far end of the femoral stem and the side wall of the first measuring area or the far end of the femoral stem cannot abut against the side wall of the first measuring area, the femoral stem is qualified;
2. the first measurement area and the second measurement area are arranged in a plurality of groups, and a plurality of limiting surfaces are arranged at the same time, so that femoral stems of different types can be detected through a detection tool, namely, the standard radian of the femoral stem of the common type and the minimum size radian in a qualified range can be set as the side wall radian of the first measurement area, the second measurement area and the limiting surfaces are also set into shapes matched with the first measurement area and the second measurement area, and the limiting surfaces of different groups can be selected only when the detection tool is used;
3. after the user detects the femoral stem through the second measuring area and the limiting surface, the first measuring area is required to be used for detection, if the opening direction of the first measuring area is opposite to that of the second measuring area, the user is required to rotate the femoral stem and place the femoral stem in the first measuring area, if the opening direction of the first measuring area is the same as that of the second measuring area, great convenience is brought to the user, and the possibility that the proximal end and the distal end of the femoral stem of the user fall to rotate in the process of overturning the femoral stem to cause measurement result errors is reduced.
Drawings
Fig. 1 is an isometric view of an embodiment.
Description of reference numerals: 1. a measuring rod; 11. a first measuring area; 12. a second measurement area; 2. a limiting rod; 21. a limiting surface; 3. positioning a guide assembly; 31. fixing the rod; 32. adjusting a rod; 33. a connecting rod; 4. a scale; 5. a thread locking device; 51. a bolt; 6. and (4) a guide hole.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses utensil is examined to radian femoral stem. Referring to fig. 1, the radian femoral stem detection tool comprises a measuring rod 1, a limiting rod 2, a positioning guide assembly 3, a thread locking device 5 and a scale 4. The scale 4 sets firmly in the top and the horizontal of measuring stick 1, and gag lever post 2 is located one side of measuring stick 1 and top butt in the bottom surface of scale 4, and location direction subassembly 3 is located same one side of measuring stick 1 and gag lever post 2, connects measuring stick 1 and gag lever post 2, and thread locking device 5 is located location direction subassembly 3.
The measuring rod 1 is provided with a measuring area one 11, and the measuring area one 11 in the embodiment is a measuring groove formed on the measuring rod 1. The first measuring area 11 is arranged on the side wall of the measuring rod 1, back to the positioning guide component 3, the first measuring area 11 extends from the side wall of the measuring rod 1 to the inside of the entity of the measuring rod 1, meanwhile, the first measuring area 11 penetrates through the top end face and the bottom end face of the measuring rod 1 and is just opposite to the end face of the limiting rod 2 to form a groove structure with only two side walls, and the first measuring area 11 is just opposite to the side wall of the limiting rod 2 to form an arc shape. And during processing, the radian of the arc-shaped side wall of the first measuring area 11 is processed into a numerical value which is the same as the standard radian of the femoral stem and the maximum size radian in a qualified range, and the numerical value is used for detecting whether the radian of the femoral stem to be detected exceeds the maximum value of an allowable range.
The side wall of the measuring rod 1 opposite to the limiting rod 2 is provided with a second measuring area 12, the second measuring area 12 in the embodiment is an arc-shaped side wall formed by the side wall of the measuring rod 1 opposite to the limiting rod 2, the radian of the arc-shaped side wall of the second measuring area 12 is processed into a standard radian of a femoral stem and a minimum size radian in a qualified range, and the measuring rod 1 provided with the first measuring area 11 and the second measuring area 12 is of a vertically-arranged step-like structure.
The limiting rod 2 is opposite to the side wall of the first measuring area 11 to form a limiting surface 21, and the limiting surface 21 is matched with the second measuring area 12, namely the limiting surface 21 and the second measuring area 12 can be attached without a gap. The top end of the limiting rod 2, the top end of the measuring rod 1, the top end of the measuring area I11, the top end of the measuring area II 12 and the top end of the limiting surface 21 are all located at the same horizontal height, and similarly, the bottom ends of the five parts are also located at the same horizontal height.
The positioning and guiding assembly 3 comprises a fixed rod 31 fixedly arranged on the measuring rod 1, a connecting rod 33 fixedly arranged on the fixed rod 31 and an adjusting rod 32 connected on the connecting rod 33 in a sliding manner, the fixed rod 31, the connecting rod 33 and the adjusting rod 32 are all transversely arranged, the fixed rod 31 is perpendicular to the measuring rod 1, the adjusting rod 32 is parallel to the fixed rod 31, and the connecting rod 33 is perpendicular to the fixed rod 31. Connecting rod 33 is the square pole form, adjusts the one end and the gag lever post 2 fixed connection of pole 32, and the other end is seted up with the square hole form guiding hole 6 of connecting rod 33 adaptation, and connecting rod 33 passes from guiding hole 6. The screw locking device 5 in this embodiment is a bolt 51 screwed to the adjustment lever 32. When the adjusting lever 32 is moved, the bolt 51 is loosened so that the thread end of the bolt 51 does not abut on the connecting rod 33, and when the adjusting lever 32 is slid to a desired position, the bolt 51 is tightened so that the thread end abuts on the connecting rod 33, whereby the position of the adjusting lever 32 can be fixed by increasing the frictional force between the bolt 51 and the connecting rod 33.
The implementation principle of the radian femoral stem checking fixture in the embodiment of the application is as follows: firstly, measuring the difference distance between the standard radian of the femoral stem and the near end and the far end of the minimum-size radian in a qualified range, sliding the limiting rod 2 to the position away from the measuring rod 1 by the measured difference distance, fixing the position of the limiting rod 2 by screwing the bolt 51, then enabling the near end of the femoral stem to be attached to the top end of the measuring area II 12, moving the femoral stem into the measuring area II 12 to be tightly abutted against the side wall of the measuring area II 12, which is opposite to the limiting rod 2, if the far end of the femoral stem can not enter the area between the limiting rod 2 and the measuring rod 1 through the bottom end of the limiting rod 2, the radian of the femoral stem is smaller and exceeds the qualified range, and the femoral stem is unqualified; if the distal end of this femoral stem can get into the region between gag lever post 2 and the measuring stick 1, the distal end of gag lever post 2 can not lead to the fact the hindrance to the distal end of femoral stem promptly, laminate the near-end of femoral stem and the top of measuring district 11 again, if the distal end of femoral stem and the lateral wall distal end butt of measuring district 11, and leave the space between the lateral wall of femoral stem and measuring district 11, then this femoral stem is unqualified, if there is not space between the two or the distal end of femoral stem can not the butt on the lateral wall of measuring district 11, then this femoral stem is qualified.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an utensil is examined to radian femoral stem which characterized in that: the device comprises a measuring rod (1), a limiting rod (2) and a guiding and positioning component;
measuring rod (1): at least a first measuring area (11) and a second measuring area (12) are formed, and the two measuring areas respectively correspond to the profile of one side of a femoral stem under the minimum standard radian standard and the profile of the other side of the femoral stem under the maximum standard radian standard;
limiting rod (2): the limiting rod is fixedly arranged on the guiding and positioning component, one side wall of the limiting rod (2) is over against a measuring area corresponding to one side profile of the femoral stem under the minimum standard radian standard, and the side wall forms a limiting surface (21);
guiding and positioning components: the guide positioning component is fixedly connected with the measuring rod (1), and is provided with a thread locking device (5) for fixing the position of the limiting rod (2);
the two ends of the measuring rod (1) and the two ends of the limiting rod (2) are distributed in four rectangular sharp-angle shapes.
2. The radian femoral stem testing tool of claim 1, wherein: the guiding and positioning assembly comprises a fixing rod (31) fixedly connected with the measuring rod (1), an adjusting rod (32) fixedly connected with the limiting rod (2) and a connecting rod (33) fixedly connected with the fixing rod (31), the adjusting rod (32) is connected to the connecting rod (33) in a sliding mode, and the thread locking device (5) is arranged on the adjusting rod (32) or the connecting rod (33).
3. The radian femoral stem testing tool of claim 2, wherein: the thread locking device (5) comprises a bolt (51) which is in threaded connection with the adjusting rod (32), and when the thread tail end of the bolt (51) is abutted against the connecting rod (33), a space is reserved between the bottom surface of the head of the bolt (51) and the adjusting rod (32).
4. The radian femoral stem testing tool of claim 2, wherein: the connecting rod (33) is in a square rod shape, the adjusting rod (32) is provided with a guide hole (6) matched with the profile of the connecting rod (33), and when the tail end of the thread of the bolt (51) abuts against the side wall of the connecting rod (33), the tail end of the thread of the bolt (51) is located inside the guide hole (6).
5. The radian femoral stem testing tool of claim 1, wherein: the measuring rod (1) is provided with a plurality of measuring areas I (11) and measuring areas II (12), the limiting rod (2) is in a step shape just opposite to the side wall of the measuring area corresponding to the profile of one side under the minimum standard radian standard of the femoral stem, and a plurality of different limiting surfaces (21) corresponding to different measuring areas are formed.
6. The radian femoral stem testing tool of claim 1 or 5, wherein: the first measuring area (11) and the second measuring area (12) are respectively arranged on different side walls of the measuring rod (1).
7. The radian femoral stem testing tool of claim 1, wherein: and a scale (4) for measuring the shortest straight-line distance between the measuring rod (1) and the limiting rod (2) is fixedly arranged on the measuring rod.
8. The radian femoral stem testing tool of claim 1, wherein: the first measuring area (11) and the second measuring area (12) are arranged towards the limiting surface (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355991.7A CN112674918B (en) | 2020-11-27 | 2020-11-27 | Radian femoral stem checking fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355991.7A CN112674918B (en) | 2020-11-27 | 2020-11-27 | Radian femoral stem checking fixture |
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| Publication Number | Publication Date |
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| CN112674918A true CN112674918A (en) | 2021-04-20 |
| CN112674918B CN112674918B (en) | 2022-08-16 |
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| CN202011355991.7A Active CN112674918B (en) | 2020-11-27 | 2020-11-27 | Radian femoral stem checking fixture |
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| CN209727013U (en) * | 2019-03-07 | 2019-12-03 | 上海宝冶集团有限公司 | Hyperbolic piece housing shapes verifying attachment |
| CN210570317U (en) * | 2019-09-06 | 2020-05-19 | 天津正天医疗器械有限公司 | Detection instrument for femoral stem |
| CN211476921U (en) * | 2020-03-05 | 2020-09-11 | 陕西斯坦特生物科技有限公司 | Utensil is examined to thighbone handle beat angle range estimation |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM244873U (en) * | 2003-10-21 | 2004-10-01 | United Orthopedic Corp | Measuring device for artificial thighbone stem |
| WO2016134891A1 (en) * | 2015-02-24 | 2016-09-01 | Waldemar Link Gmbh & Co. Kg | Orientation device for orienting femoral hip-stem implant components for test purposes |
| CN204503828U (en) * | 2015-03-03 | 2015-07-29 | 青岛丰穗达机械有限公司 | A kind of shape tube radian detects frock |
| CN107708551A (en) * | 2015-04-14 | 2018-02-16 | 半岛骨科（私人）有限公司 | Femoral head measurement apparatus |
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| CN205537460U (en) * | 2016-04-12 | 2016-08-31 | 四川建安工业有限责任公司 | Elbow shape radian detection tool is indulged to automotive suspension |
| WO2018087723A1 (en) * | 2016-11-14 | 2018-05-17 | Peninsula Orthopaedics (Pty) Ltd | Single use femoral head measurement device |
| CN209166319U (en) * | 2018-12-27 | 2019-07-26 | 上海瀚通汽车零部件有限公司 | A kind of auto parts and components cubing |
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| CN112674918B (en) | 2022-08-16 |
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