CN117770891A - Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation - Google Patents
Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation Download PDFInfo
- Publication number
- CN117770891A CN117770891A CN202410205839.2A CN202410205839A CN117770891A CN 117770891 A CN117770891 A CN 117770891A CN 202410205839 A CN202410205839 A CN 202410205839A CN 117770891 A CN117770891 A CN 117770891A
- Authority
- CN
- China
- Prior art keywords
- positioning
- guide
- spreader
- main body
- positioning tool
- 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.)
- Pending
Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 22
- 210000000689 upper leg Anatomy 0.000 claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000001356 surgical procedure Methods 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 10
- 238000013150 knee replacement Methods 0.000 claims description 9
- 239000004579 marble Substances 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 230000007480 spreading Effects 0.000 abstract description 8
- 238000002271 resection Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 5
- 210000002303 tibia Anatomy 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003412 degenerative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 206010039073 rheumatoid arthritis Diseases 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention provides a supporting femur osteotomy positioning tool of a spreader for knee joint replacement operation, which comprises a spreader main body, a battery module and a femur spreading end, wherein the spreader main body is detachably connected with the femur osteotomy positioning tool. The femur osteotomy positioning tool provided by the invention adopts a positioning groove finding mode to position the osteotomy tool, is suitable for various prosthesis models, and has a simple operation method; when the positioning guide plate pulls the adjusting position up and down, the two sides of the main body of the spreader are pressed while the clamping plates are pressed, then the positioning guide plate is pulled, and after the positioning guide plate is pulled in place, the clamping plates are released, so that the position locking can be realized, and the use method is simpler and more convenient; because the locating piece can be locked after being inserted into the position, the operation of the spreader can be completed by only one person, and the labor cost is saved.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a matched femoral osteotomy positioning tool for a spreader for knee joint replacement operation.
Background
With the aggravation of aging population, knee joint cartilage is damaged or knee joints are abnormally worn due to diseases such as degenerative osteoarthritis and rheumatoid arthritis, ligament imbalance is caused, lower limb flexion and extension activities are limited, and total knee joint replacement operation is required to restore lower limb functions.
The prior art scheme has the following disadvantages when performing the total knee replacement operation: the device capable of osteotomy cannot be positioned and the distraction pressure and distance cannot be measured; the device capable of measuring knee joint distraction pressure and distraction distance cannot assist osteotomy, and does not have a matched osteotomy tool.
Patent CN116983031a provides a digital distractor for total knee replacement surgery that can measure distraction distance and pressure while also assisting osteotomies when performing knee replacement surgery. However, the auxiliary osteotomy tool adopts a mode of locating the locating holes to perform osteotomy, the tool locating is complex, the data of various types of prostheses are counted, table lookup is needed in actual operation, meanwhile, the locating Kong Daoban is needed to be selected and replaced according to different prosthesis types, and the using operation flow is complex. In addition, when the position of the locating hole guide plate is adjusted up and down, one hand is required to hold the spreader main body, the other hand is required to hold the locating hole guide plate after being pulled in place, and then a third hand is used for spiral locking, so that the spiral locking operation is slow and is inconvenient for a single person to operate.
Disclosure of Invention
The invention aims to solve the defects of the prior art scheme described in the background art and provides a supporting femur osteotomy positioning tool for a spreader for knee joint replacement operation. The femur osteotomy positioning tool adopts a positioning groove to position the osteotomy tool, is suitable for various prosthesis models, has a simple operation method, holds the main body of the spreader and presses the clamping plates at two sides when the positioning guide plate pulls the adjusting position up and down, then pulls the positioning guide plate, and can realize position locking by loosening the clamping plates after pulling the positioning guide plate in place, so that the use method is simpler and more convenient.
The invention is realized by the following technical scheme: a distractor kit for a femoral osteotomy positioning tool for a knee replacement procedure, the distractor comprising: the device comprises a spreader main body, a battery module and a femur spreader end.
Further, the spreader main body and the femur osteotomy positioning tool are quickly disassembled and assembled.
Further, a battery is installed in the battery module and is used for being connected with the spreader main body and supplying power for the spreader main body.
Further, the femoral distractor end is connected to the distractor body.
Further, the femur opening end is bilaterally symmetrical, and a pressure sensor for measuring direct contact pressure is also arranged.
Further, a main body guide block and marbles are arranged on the spreader main body, and the main body guide block and the marbles are symmetrically arranged on two side surfaces of the spreader main body respectively; the femur osteotomy positioning tool comprises a guide seat and ejection columns, wherein the ejection columns are symmetrically arranged on two side surfaces of the guide seat, and two symmetrically distributed guide seat positioning holes are formed in the guide seat; the femur osteotomy positioning tool is pushed inwards along the main body guide block of the spreader main body, and is clamped on the spreader main body when the guide seat in-place hole reaches the corresponding position of the marble of the spreader main body; and simultaneously, pushing the ejection columns at two sides of the femur osteotomy positioning tool and pulling the femur osteotomy positioning tool outwards along the direction of the main body guide block of the spreader main body, so that the femur osteotomy positioning tool can be taken down.
Further, the femoral resection positioning tool includes: the device comprises a guide seat, a guide column, a positioning guide plate, a positioning sheet, a connecting anti-drop cover, an ejection column, a rotating shaft, a spring, a clamping plate, a baffle sheet, a connecting steel wire, a steel ball fixing seat, steel balls and a small spring.
Further, the connection anti-drop cover is fixedly connected with the ejection column.
Further, the left side and the right side of the guide post are symmetrically distributed, scale marks are displayed on the guide post, and the guide post slides up and down along the guide seat.
Further, the baffle plate is arranged at the lower end of the guide post and used for limiting the guide post to completely separate from the guide seat.
Further, the positioning guide plate is fixedly connected with the guide post, guide post limiting teeth are further arranged on the guide post, and the tooth space of the guide post limiting teeth is smaller than the minimum unit of scale marks on the guide post, so that the precision of the positioning guide plate pulled to a designated position is ensured.
Further, clamping plates are arranged on two sides of the femur osteotomy tool, the left side and the right side of the clamping plates are symmetrical, a structure corresponding to the guide post limiting teeth in tooth form is designed on the clamping plates, and the clamping plates are installed on the guide seat through the rotating shaft.
Further, a spring is arranged on the inner side of the clamping plate, and the clamping plate is tightly propped against the guide post by the elastic force of the spring. Meanwhile, the clamping plates on the two sides are pressed, the positioning guide plate is pulled up and down, and after the positioning guide plate is pulled to a designated position, the clamping plates on the two sides are loosened, so that the position locking of the positioning guide plate is realized.
Furthermore, a positioning guide plate positioning groove is formed in the positioning guide plate, and the positioning sheet is inserted into the positioning guide plate positioning groove.
Further, a steel ball fixing seat is arranged above the positioning guide plate, the steel balls are arranged in the steel ball fixing seat, a small spring is arranged between the steel balls and the steel ball fixing seat, and the small spring downwards pushes the steel balls against the positioning sheet.
Furthermore, a locating plate limiting groove is formed in the locating plate, and the locating plate is limited through the locating plate limiting groove after being inserted into the locating guide plate, so that the locating plate is prevented from falling off or sliding out.
Further, in order to keep the two spacers synchronized, the two spacers are connected by a connecting wire.
The invention provides a supporting femur osteotomy positioning tool for a spreader for knee joint replacement surgery, which has the following technical advantages compared with the prior art:
1. the femur osteotomy positioning tool adopts a positioning groove finding mode to position the osteotomy tool, is suitable for various prosthesis models, does not need to look up a table during use, does not need to replace parts, and has simple operation method;
2. when the positioning guide plate pulls the adjusting position up and down, the two sides of the main body of the spreader are pressed while the clamping plates are held, then the positioning guide plate is pulled, and the clamping plates are released after the positioning guide plate is pulled in place, so that the position locking can be realized. Other operations are not needed, and the use method is simpler and more convenient;
3. the positioning sheet can be locked after being inserted into the position, the operation of the spreader can be completed by only one person, the operation is simple, and the labor cost is saved.
Drawings
Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a femoral resection positioning tool under an angle for use with an distractor according to an embodiment of the present invention;
FIG. 2 is a schematic view of the distractor according to an embodiment of the present invention when not connected to a femoral resection positioning tool;
FIG. 3 is a schematic view of a femoral resection positioning tool according to an embodiment of the present invention at an angle;
FIG. 4 is a front view of a femoral resection positioning tool according to an embodiment of the present invention;
FIG. 5 is a top view of a femoral resection positioning tool according to an embodiment of the present invention;
FIG. 6 is a left side view of a femoral resection positioning tool according to an embodiment of the present invention;
FIG. 7 is a schematic view of a femoral resection positioning tool according to an embodiment of the present invention for performing a distal femoral resection at an angle;
FIG. 8 is a schematic view of a femoral resection positioning tool according to an embodiment of the present invention in use for performing a distal femoral resection at another angle;
FIG. 9 is a schematic view of a femoral resection positioning tool according to an embodiment of the present invention for performing a posterior femoral resection at an angle;
FIG. 10 is a schematic view of a femoral resection positioning tool according to an embodiment of the present invention in use for performing a posterior femoral resection at another angle;
reference numerals illustrate: 100. a distractor body; 200. a battery module; 300. a femoral strut end; 400. a femur osteotomy positioning tool; 500. a tibial model; 600. a femur model; 700. a four-in-one guide plate; 800. a femur distal end osteotomy plate; 101. a main body guide block; 102. a marble; 103. a tibial tray; 104. a rotation shaft; 301. a pressure sensor cover plate; 401. a guide seat; 402. a guide post; 403. positioning a guide plate; 404. a positioning sheet; 405. the connection is used for preventing the cover from falling off; 406. an ejection column; 407. a rotating shaft; 408. a spring; 409. a clamping plate; 410. a baffle; 411. connecting steel wires; 412. the steel ball fixing seat; 413. steel balls; 414. a small spring; 701. a rear osteotomy groove; 4011. a guide seat in-place hole; 4021. guide post limit teeth; 4031. positioning guide plate positioning grooves; 4041. and the locating piece limiting groove.
Detailed Description
Features and exemplary embodiments of various aspects of the present disclosure will be described in detail below, and in order to make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the present disclosure and not limiting. It will be apparent to one skilled in the art that the present disclosure may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present disclosure by showing examples of the present disclosure.
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. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
For a better understanding of the present invention, embodiments of the present invention are described in detail below with reference to the drawings.
As shown in fig. 1, the present invention provides a spreader-matched femoral osteotomy positioning tool for knee replacement surgery, the spreader comprising: a distractor body 100, a battery module 200, a femoral distractor end 300.
As an alternative embodiment, a battery is installed in the battery module 200, and is used for being connected with the spreader body 100 and supplying power to the spreader body 100; the femoral opening end 300 is connected with the distractor main body 100, and the femoral opening end 300 is bilaterally symmetrical, and is also provided with a pressure sensor for measuring direct contact pressure.
As an alternative embodiment, the distractor body 100 is quickly assembled with the femoral resection positioning tool 400.
As shown in fig. 2, the distractor body 100 is provided with a body guide block 101, a marble 102, a tibia tray 103, and a rotation shaft 104.
As an alternative embodiment, the main body guide block 101 and the marble 102 are symmetrically disposed on both sides of the spreader main body 100, respectively; the femur opening end 300 is connected with the tibia supporting plate 103, a pressure sensor cover plate 301 is arranged on the femur opening end 300, and a pressure sensor is also arranged on the pressure sensor cover plate 301; the rotating shaft 104 adopts a worm assembly structure and is arranged in a supporting seat of the spreader main body, and automatic locking is realized after spreading.
As shown in fig. 3-6, the femoral resection positioning tool 400 includes: guide holder 401, guide post 402, location baffle 403, spacer 404, connection anti-drop cover 405, ejection post 406, pivot 407, spring 408, chucking plate 409, separation blade 410, connection steel wire 411, steel ball fixing base 412, steel ball 413, little spring 414.
As an optional implementation manner, the ejector pins 406 are symmetrically disposed on two sides of the guide holder 401, and two symmetrically distributed guide holder locating holes 4011 are formed in the guide holder 401. The femur osteotomy positioning tool 400 is pushed inward along the main body guide block 101 of the spreader main body, and when the guide seat positioning hole 4011 reaches the corresponding position of the marble 102 of the spreader main body, the femur osteotomy positioning tool 400 is clamped on the spreader main body 100; simultaneously, the ejector posts 406 at two sides of the femur osteotomy positioning tool 400 are pressed, and the femur osteotomy positioning tool 400 is pulled outwards along the direction of the main body guide block 101 of the spreader main body, so that the femur osteotomy positioning tool 400 can be removed.
As an alternative embodiment, the connection drop-proof cover 405 is fixedly connected to the ejector post 406.
As an optional implementation manner, the guide posts 402 are symmetrically distributed on the left and right sides, scale marks are displayed on the guide posts, and the guide posts 402 slide up and down along the guide seats 401; the blocking piece 410 is installed at the lower end of the guide post 402, and is used for limiting the guide post 402 from completely falling out of the guide seat 401.
As an optional implementation manner, the positioning guide plate 403 is fixedly connected with the guide post 402, the guide post 402 is further provided with guide post limiting teeth 4021, and the tooth space of the guide post limiting teeth 4021 is smaller than the minimum unit of scale marks on the guide post 402, so that the precision of pulling the positioning guide plate 403 to a designated position is ensured.
As an alternative embodiment, two sides of the femoral osteotomy tool 400 are provided with clamping plates 409, the two sides of the clamping plates 409 are symmetrical, a structure corresponding to the guide post limiting teeth 4021 is designed on the clamping plates 409, and the clamping plates 409 are mounted on the guide seat 401 through the rotating shaft 407 and can rotate around the rotating shaft 407.
As an alternative embodiment, a spring 408 is installed inside the clamping plate 409, and the elastic force of the spring 408 pushes the clamping plate 409 tightly and clamps the guide post 402; meanwhile, the clamping plates 409 on the two sides are pressed, the positioning guide plate 403 is pulled up and down, and after the positioning guide plate 403 is pulled to a designated position, the clamping plates 409 on the two sides are loosened, so that the position locking of the positioning guide plate 403 is realized.
As an alternative embodiment, the positioning guide 403 is provided with a positioning guide positioning groove 4031, and the positioning piece 404 is inserted into the positioning guide positioning groove 4031.
As an alternative embodiment, a steel ball fixing seat 412 is installed above the positioning guide plate 403, the steel ball 413 is installed in the steel ball fixing seat 412, a small spring 414 is installed between the steel ball 413 and the steel ball fixing seat 412, and the small spring 414 pushes the steel ball 413 down against the positioning piece 404.
As an alternative embodiment, the spacer 404 is provided with a spacer limiting groove 4041, and the spacer 404 is limited by the spacer limiting groove 4041 after being inserted into the positioning guide plate 403, so as to prevent the spacer from falling out or sliding out. The positioning pieces 404 need to be pushed and pulled by hands at the positions of moving inwards or outwards, the positioning pieces 404 do not need to be held all the time, and in order to enable the two positioning pieces 404 to be synchronous as much as possible, the two positioning pieces 404 are connected by a connecting steel wire 411.
As an alternative implementation, the femur osteotomy positioning tool 400 can be installed and used by one person, when the upper and lower positions of the positioning guide plate 403 are required to be adjusted, one hand holds the spreader body 100 and presses the clamping plates 409 on both sides, the other hand pulls the positioning guide plate 403, after the positioning guide plate 403 is pulled in place, the clamping plates 409 on both sides of the spreader body 100 are released, so that the position locking can be realized, if the position of the positioning plate 404 is required to be adjusted, the positioning plate 404 is pushed and pulled, and the position of the positioning plate 404 is released to be locked.
The using method of the thighbone osteotomy positioning tool provided by the invention comprises the following steps:
(1) Distal femur osteotomy
As shown in fig. 7 and 8, after the tibia of the knee joint is osteotomized, the knee joint is in a straightened position, the spreader is inserted into the knee joint, the tibia supporting plate 103 of the spreader main body 100 is tightly attached to the osteotomy surface of the tibia model 500, the pressure sensor cover plates 301 of the femur spreading ends 300 support the femur model 600, the rotating shafts 104 on both sides of the spreader main body 100 are rotated by a wrench, the femur spreading ends on both sides are spread respectively, and the spreading heights are l respectively 1 And l 2 Let l=max (l 1 ，l 2 ). Knowing the amount of resection h at the distal end of the femur based on the model and size of the femoral prosthesis currently in use, the positioning guide 403 is pulled to a designated position s, whereins=l+h. The distal femur osteotomy plate 800 is placed against the positioning guide plate, slid up and down to align the osteotomy slot of the distal femur osteotomy plate 800 with the positioning guide plate positioning slot 4031 in the positioning guide plate 403, the positioning tab 404 is pushed inward to be inserted into the osteotomy slot of the distal femur osteotomy plate, the upper and lower positions of the distal femur osteotomy plate 800 are defined, the distal femur osteotomy plate 800 is moved left and right to center, and then the distal femur osteotomy plate is nailed along the positioning hole of the distal femur osteotomy plate 800, and the distractor is removed to perform distal femur osteotomy.
(2) Posterior femur osteotomy
As shown in fig. 9 and 10, the knee joint is in a flexed position, the spreader is inserted into the knee joint, the tibial tray 103 of the spreader body 100 is tightly attached to the osteotomy surface of the tibial model 500, the pressure sensor cover plates 301 of the femoral spreading ends 300 support the femoral model 600, the rotating shafts 104 on both sides of the spreader body 100 are rotated by a wrench to spread the femoral spreading ends on both sides, and the spreading heights are L respectively 1 And L 2 Taking l=max (L 1 ，L 2 ). Knowing the amount of posterior femoral resection H, the positioning guide 403 is pulled to a specified position S, where s=l+h, depending on the model and size of the femoral prosthesis currently being used. The matched four-in-one guide plate 700 is tightly attached to the femur distal end osteotomy surface, the four-in-one guide plate 700 slides up and down, the rear osteotomy groove 701 of the four-in-one guide plate 700 is aligned with the positioning guide plate positioning groove 4031 on the positioning guide plate 403, the positioning sheet 404 is pushed inwards, the positioning sheet can be inserted into the rear osteotomy groove 701 of the four-in-one guide plate, the upper and lower positions of the four-in-one guide plate 700 are limited, the four-in-one guide plate 700 is moved left and right to center the femur, then the four-in-one guide plate is nailed along the positioning hole of the four-in-one guide plate 700, and the spreader is taken out to osteotomy the femur rear.
The invention provides a supporting femur osteotomy positioning tool for a spreader for knee joint replacement surgery, which has the following technical advantages compared with the prior art:
1. the femur osteotomy positioning tool adopts a positioning groove finding mode to position the osteotomy tool, is suitable for various prosthesis models, does not need to look up a table during use, does not need to replace parts, and has simple operation method;
2. when the positioning guide plate pulls the adjusting position up and down, the two sides of the main body of the spreader are pressed while the clamping plates are held, then the positioning guide plate is pulled, and the clamping plates are released after the positioning guide plate is pulled in place, so that the position locking can be realized. Other operations are not needed, and the use method is simpler and more convenient;
3. the positioning sheet can be locked after being inserted into the position, the operation of the spreader can be completed by only one person, the operation is simple, and the labor cost is saved.
In the foregoing, only the specific embodiments of the present disclosure are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present disclosure is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure, and these modifications or substitutions should be included in the scope of the present disclosure.
Claims (10)
1. The supporting femur osteotomy positioning tool of the spreader for knee joint replacement operation, the spreader includes spreader body (100), battery module (200), femur spreader end (300), characterized by that, the said spreader body (100) is fast dismantled and assembled with femur osteotomy positioning tool (400); a battery is arranged in the battery module (200) and is used for being connected with the spreader main body (100) and supplying power for the spreader main body (100); the femur opening end (300) is connected with the spreader main body (100), and the femur opening end (300) is bilaterally symmetrical and is also provided with a pressure sensor for measuring direct contact pressure;
the spreader comprises a spreader main body (100), wherein a main body guide block (101) and marbles (102) are arranged on the spreader main body (100), and the main body guide block (101) and the marbles (102) are symmetrically arranged on two side surfaces of the spreader main body (100) respectively; the femur osteotomy positioning tool (400) comprises a guide seat (401) and ejection columns (406), wherein the ejection columns (406) are symmetrically arranged on two side surfaces of the guide seat (401), and two symmetrically distributed guide seat positioning holes (4011) are formed in the guide seat (401); the femur osteotomy positioning tool (400) is pushed inwards along the main body guide block (101) of the spreader main body, and when the guide seat in-place hole (4011) reaches the corresponding position of the marble (102) of the spreader main body, the femur osteotomy positioning tool (400) is clamped on the spreader main body (100); and simultaneously, pushing ejection columns (406) at two sides of the femur osteotomy positioning tool (400) and pulling the femur osteotomy positioning tool (400) outwards along the direction of the main body guide block (101) of the spreader main body, namely, taking down the femur osteotomy positioning tool (400).
2. The distractor kit femoral osteotomy positioning tool for use in knee replacement surgery of claim 1, wherein the femoral osteotomy positioning tool (400) further comprises: the device comprises a guide column (402), a positioning guide plate (403), a positioning sheet (404), a connecting anti-falling cover (405), a rotating shaft (407), a spring (408), a clamping plate (409), a baffle sheet (410), a connecting steel wire (411), a steel ball fixing seat (412), steel balls (413) and a small spring (414); wherein the connection anti-drop cover (405) is fixedly connected with the ejection column (406).
3. The spreader matched femur osteotomy positioning tool for knee joint replacement surgery of claim 2, wherein the guide posts (402) are symmetrically distributed on the left and right sides, scale marks are displayed on the guide posts, and the guide posts (402) slide up and down along the guide seat (401); the baffle (410) is arranged at the lower end of the guide post (402) and used for limiting the guide post (402) to be completely separated from the guide seat (401).
4. The supporting femur osteotomy positioning tool for a distractor for knee joint replacement surgery of claim 2, wherein the positioning guide plate (403) is fixedly connected with the guide post (402), guide post limiting teeth (4021) are further arranged on the guide post (402), and the tooth space of the guide post limiting teeth (4021) is smaller than the minimum unit of scale marks on the guide post (402), so that the precision of pulling the positioning guide plate (403) to a designated position is ensured.
5. The supporting femur osteotomy positioning tool for a distractor for knee joint replacement surgery of claim 4, wherein clamping plates (409) are provided on both sides of the femur osteotomy tool (400), the clamping plates (409) are symmetrical on both sides, a structure corresponding to the guide post limiting teeth (4021) is designed on the clamping plates, and the clamping plates (409) are mounted on the guide seat (401) through the rotating shaft (407).
6. The supporting femur osteotomy positioning tool for a distractor for knee replacement surgery of claim 2, wherein a spring (408) is mounted inside the clamping plate (409), and the spring force of the spring (408) pushes the clamping plate (409) tightly against the guide post (402); meanwhile, the clamping plates (409) on the two sides are pressed, the positioning guide plate (403) is pulled up and down, and after the positioning guide plate (403) is pulled to a designated position, the clamping plates (409) on the two sides are loosened, so that the position locking of the positioning guide plate (403) is realized.
7. The supporting femur osteotomy positioning tool for a distractor for knee replacement surgery of claim 2, wherein the positioning guide (403) is configured with a positioning guide positioning slot (4031), and the positioning tab (404) is inserted into the positioning guide positioning slot (4031).
8. The supporting femur osteotomy positioning tool for a distractor for knee joint replacement surgery of claim 2, wherein a steel ball fixing seat (412) is installed above the positioning guide plate (403), the steel ball (413) is installed in the steel ball fixing seat (412), a small spring (414) is installed between the steel ball (413) and the steel ball fixing seat (412), and the small spring (414) pushes the steel ball (413) downwards tightly, and is kept fixed with the positioning piece (404).
9. The supporting femur osteotomy positioning tool for a distractor for knee joint replacement surgery of claim 2, wherein the positioning plate (404) is provided with a positioning plate limiting groove (4041), and the positioning plate (404) is limited by the positioning plate limiting groove (4041) after being inserted into the positioning guide plate (403) to prevent the positioning plate from falling out or sliding out.
10. A spreader kit for knee replacement surgery according to claim 2, wherein two spacers (404) are connected by the connecting wire (411) for keeping the two spacers (404) synchronized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410205839.2A CN117770891A (en) | 2024-02-26 | 2024-02-26 | Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410205839.2A CN117770891A (en) | 2024-02-26 | 2024-02-26 | Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117770891A true CN117770891A (en) | 2024-03-29 |
Family
ID=90389468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410205839.2A Pending CN117770891A (en) | 2024-02-26 | 2024-02-26 | Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117770891A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090138021A1 (en) * | 2005-09-30 | 2009-05-28 | Callum Colquhoun | Instrument assembly for use in knee joint replacement surgery |
| US20140288563A1 (en) * | 2011-07-19 | 2014-09-25 | Jody L. Claypool | Knee arthroplasty instrument |
| CN207755330U (en) * | 2017-06-14 | 2018-08-24 | 爱乔（上海）医疗科技有限公司 | Osteotomy distance adjustment component |
| CN111407471A (en) * | 2020-03-26 | 2020-07-14 | 北京力达康科技有限公司 | Thighbone measuring device |
| CN113143398A (en) * | 2021-03-29 | 2021-07-23 | 北京市春立正达医疗器械股份有限公司 | Distal femur osteotomy instrument |
| CN113367765A (en) * | 2021-05-29 | 2021-09-10 | 北京力达康科技有限公司 | Auxiliary osteotomy device for proximal tibia |
| CN115040266A (en) * | 2022-05-31 | 2022-09-13 | 北京市春立正达医疗器械股份有限公司 | Knee joint knee bending gap balancer |
| CN116983031A (en) * | 2023-07-24 | 2023-11-03 | 杭州键嘉医疗科技股份有限公司 | Digital spreader for total knee replacement operation |
-
2024
- 2024-02-26 CN CN202410205839.2A patent/CN117770891A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090138021A1 (en) * | 2005-09-30 | 2009-05-28 | Callum Colquhoun | Instrument assembly for use in knee joint replacement surgery |
| US20140288563A1 (en) * | 2011-07-19 | 2014-09-25 | Jody L. Claypool | Knee arthroplasty instrument |
| CN207755330U (en) * | 2017-06-14 | 2018-08-24 | 爱乔（上海）医疗科技有限公司 | Osteotomy distance adjustment component |
| CN111407471A (en) * | 2020-03-26 | 2020-07-14 | 北京力达康科技有限公司 | Thighbone measuring device |
| CN113143398A (en) * | 2021-03-29 | 2021-07-23 | 北京市春立正达医疗器械股份有限公司 | Distal femur osteotomy instrument |
| CN113367765A (en) * | 2021-05-29 | 2021-09-10 | 北京力达康科技有限公司 | Auxiliary osteotomy device for proximal tibia |
| CN115040266A (en) * | 2022-05-31 | 2022-09-13 | 北京市春立正达医疗器械股份有限公司 | Knee joint knee bending gap balancer |
| CN116983031A (en) * | 2023-07-24 | 2023-11-03 | 杭州键嘉医疗科技股份有限公司 | Digital spreader for total knee replacement operation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210298766A1 (en) | Surgical instrumentation and methods of use for implanting a prosthesis | |
| US4565192A (en) | Device for cutting a patella and method therefor | |
| US4524766A (en) | Surgical knee alignment method and system | |
| US4935023A (en) | Femoral surface shaping guide for knee implants | |
| US5720752A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| US6056756A (en) | Femoral tensing and sizing device | |
| US5417694A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| EP0778751B1 (en) | Tibial resection method and apparatus | |
| US4722330A (en) | Femoral surface shaping guide for knee implants | |
| US5575793A (en) | Patella clamp apparatus | |
| AU696251B2 (en) | Distal femoral cutting guide | |
| US4938762A (en) | Reference system for implantation of condylar total knee prostheses | |
| US20080177261A1 (en) | Instrumentation for knee surgery | |
| JP2003325534A (en) | Instrument and method for flexion gap adjustment | |
| US20070162036A1 (en) | Device for assisting in a total knee prosthesis implantation | |
| JP2020500600A (en) | System and method for providing a tibial baseplate | |
| CN117770891A (en) | Matched femoral osteotomy positioning tool for spreader for knee joint replacement operation | |
| CN116983031A (en) | Digital spreader for total knee replacement operation | |
| CN211409545U (en) | Thighbone condyle measurer | |
| AU746310B2 (en) | Ancillary equipment for preparing the setting of a knee prosthesis | |
| US20100131021A1 (en) | Locating a bone axis | |
| CN220001939U (en) | Femur measuring device for knee osteotomy | |
| CN217827994U (en) | Auxiliary device for total knee replacement surgery | |
| CN213217417U (en) | Gap balance osteotomy guiding device for knee joint replacement surgery | |
| CN116392265A (en) | Femur measuring device for knee osteotomy |
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 |