CN219250324U - Malleolus cuts bone baffle - Google Patents
Malleolus cuts bone baffle Download PDFInfo
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- CN219250324U CN219250324U CN202223545996.3U CN202223545996U CN219250324U CN 219250324 U CN219250324 U CN 219250324U CN 202223545996 U CN202223545996 U CN 202223545996U CN 219250324 U CN219250324 U CN 219250324U
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Abstract
The utility model relates to the technical field of medical instruments, in particular to an inner ankle osteotomy guide plate, which comprises a guide plate, a screw rod, a guide rod, a thread block, a sliding block and a limiting frame, wherein the guide plate is arranged on the inner ankle osteotomy guide plate; when the osteotomy is carried out, the osteotomy guide plate is fixed on the malleolus, the saw blade of the pendulum saw penetrates through the through groove and the osteotomy groove, the saw blade cuts the bone along the osteotomy groove, and when the osteotomy operation reaches a certain depth, the limiting frame is contacted with the shell of the pendulum saw, so that the saw blade is prevented from going deep, and cartilage on the surface of the talus is prevented from being damaged due to the fact that the osteotomy is too deep in the osteotomy process. The position of the limiting frame is adjusted according to the condition in operation, and the threaded block can move along the threaded rod by rotating the threaded rod to drive the limiting frame to move. The accurate control of the osteotomy depth is realized by dynamically fine-adjusting the position of the limiting frame in the operation, and the iatrogenic talus cartilage injury caused by the excessive osteotomy depth is avoided.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a medial malleolus osteotomy guide plate.
Background
For parietal cartilage injuries with greater cystic changes, open surgery is currently the most effective treatment modality, and the surgical modalities include autologous osteochondral grafting, autologous periosteal bone complex grafting, allogenic cartilage grafting, and the like. However, no matter what kind of operation mode is adopted, the quick and accurate exposure focus is the first step of successful operation, and at present, the focus is exposed by adopting a mode of cutting the malleolus at home and abroad, namely, when in the operation of cutting the bone, a doctor marks the osteotomy line at the position 2cm-2.5cm above the tip of the malleolus, holds a medical swing saw along a certain angle, cuts the malleolus, and then exposes the focus on the surface of the talus. The ideal osteotomy operation is to cut off the malleolus and not damage cartilage on the surface of the talus, but the tibial-talus joint clearance is small, and the physiological state is only about 2mm, so that the osteotomy is easily too deep due to improper operation in the osteotomy process, and the iatrogenic cartilage surface of the talus is damaged.
Disclosure of Invention
The utility model aims to provide an inner ankle osteotomy guide plate which can avoid iatrogenic talus cartilage surface injury caused by too deep osteotomy when an inner ankle osteotomy is made.
In order to achieve the above purpose, in a first aspect, the present utility model provides a medial malleolus osteotomy guide plate, which comprises a guide plate, a screw rod, a guide rod, a thread block, a sliding block and a limiting frame;
the guide plate is provided with an osteotomy groove; the screw is rotationally connected with the guide plate and is positioned at one side of the guide plate; the guide rod is fixedly connected with the guide plate and is positioned at one side of the guide plate; the thread block is in threaded connection with the screw rod and is penetrated by the screw rod; the sliding block is connected with the guide rod in a sliding way and is penetrated by the guide rod; the limiting frame is fixedly connected with the threaded block, fixedly connected with the sliding block and located between the threaded block and the sliding block, and is provided with a through groove.
Wherein, the medial malleolus osteotomy guide plate further comprises a knob; the knob is fixedly connected with the screw rod and is positioned at one end of the screw rod far away from the guide plate.
Wherein, the medial malleolus osteotomy guide plate further comprises a limiting block; the limiting block is fixedly connected with the guide rod and is located at one end, far away from the guide plate, of the guide rod.
Wherein the guide rod is provided with scale marks; the scale marks are positioned on the side edges of the guide rods.
The guide plate comprises a first positioning plate, a universal ball, a connecting shaft, a guide plate, two movable buckles and a second positioning plate; the universal ball is rotationally connected with the first positioning plate and is positioned at the inner side of the first positioning plate; the connecting shaft is fixedly connected with the universal ball and is positioned at one side of the universal ball; the guide plate is fixedly connected with the connecting shaft and is positioned at one end of the connecting shaft far away from the universal ball; the two movable buckles are respectively arranged on the side edges of the guide plate; the second locating plate is arranged between the two movable buckles.
The first positioning plate is provided with two first fixing holes, and the two first fixing holes are positioned on the top surface of the first positioning plate and penetrate through the first positioning plate in an included angle direction of 45 degrees with the first positioning plate.
The second positioning plate is provided with two second fixing holes, and the two second fixing holes are positioned on the top surface of the second positioning plate and penetrate through the second positioning plate in a direction perpendicular to the second positioning plate.
When the inner ankle osteotomy guide plate is used for performing an osteotomy, firstly, a longitudinal incision with the length of about 5cm is made on the inner ankle, and the inner ankle bone surface is exposed by layer incision. Four customized screws are adopted to fix the inner condyle osteotomy guide plate at the inner ankle through the first positioning hole and the second positioning hole, and then a saw blade of the pendulum saw penetrates through the through groove and the osteotomy groove (the adopted pendulum saw is an existing medical pendulum saw and mainly comprises a shell, a driving end and a saw blade, the driving end is arranged on the shell, and the saw blade is connected with the driving end). The osteotomy groove can limit the osteotomy range, and the limiting frame can limit the osteotomy depth. According to the X-ray film measuring result before operation, the initial distance between the limiting frame and the guide plate is set, so that before the osteotomy depth exceeds the ideal depth (namely, the swing saw blade just cuts the malleolus), the limiting frame can be contacted with the shell of the swing saw, and the penetration of the saw blade is blocked. And then gradually reducing the distance between the limiting frame and the guide plate according to the condition in operation until the osteotomy depth reaches the ideal depth, thereby completing osteotomy and avoiding the damage to cartilage on the surface of the talus caused by too deep saw blade in the osteotomy process. The adjusting mode of the limiting frame is as follows: the screw rod is rotated, and the guide rod limits the position of the sliding block, so that the limit frame and the thread block can only slide along the guide rod, when the screw rod rotates, the thread block can move along the screw rod to drive the limit frame to move, the spacing between the limit frame and the guide plate can be dynamically reduced according to the position of the swing saw penetrating into an inner ankle, and meanwhile, the distance between each reduction of each control is controlled through the scale mark on the guide rod, so that the dynamic blocking of the limit frame to the swing saw and the accurate control of the osteotomy depth are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of a medial malleolus osteotomy guide plate of the present utility model.
FIG. 2 is another schematic view of a medial malleolus osteotomy guide plate of the present utility model.
FIG. 3 is an elevational cross-sectional view of a medial malleolus osteotomy guide plate of the present utility model.
FIG. 4 is a side cross-sectional view of a medial malleolus osteotomy guide plate of the present utility model.
101-guide plate, 102-screw rod, 103-guide rod, 104-thread block, 105-slide block, 106-limit frame, 107-osteotomy groove, 108-through groove, 109-knob, 110-limit block, 111-scale mark, 112-first locating plate, 113-universal ball, 114-connecting shaft, 115-guide plate, 116-movable buckle, 117-second locating plate, 118-spring, 119-movable block, 120-fixture block, 121-handle, 122-first fixed hole, 123-second fixed hole.
Detailed Description
1-4, wherein FIG. 1 is a schematic structural view of a medial malleolus osteotomy guide plate of the present utility model, FIG. 2 is another schematic structural view of a medial malleolus osteotomy guide plate of the present utility model, FIG. 3 is a front cross-sectional view of a medial malleolus osteotomy guide plate of the present utility model, FIG. 4 is a side cross-sectional view of a medial malleolus osteotomy guide plate of the present utility model, the present utility model provides a medial malleolus osteotomy guide plate comprising a guide plate 101, a screw 102, a guide rod 103, a threaded block 104, a slider 105, a stop frame 106, a knob 109, a stop block 110, and graduation marks 111; the guide plate 101 has an osteotomy groove 107; the limit frame 106 is provided with a through groove 108; the guide plate 101 comprises a first positioning plate 112, a universal ball 113, a connecting shaft 114, a guide plate 115, two movable buckles 116 and a second positioning plate 117; the first positioning plate 112112 has two first fixing holes 122; the second positioning plate 117 has two second fixing holes 123; the living buckle 116 includes a spring 118, a moving block 119, a clamping block 120 and a handle 121.
For the present embodiment, the screw 102 is rotatably connected to the guide plate 101, and is located on one side of the guide plate 101; the guide rod 103 is fixedly connected with the guide plate 101 and is positioned at one side of the guide plate 101; the thread block 104 is in threaded connection with the screw 102 and is penetrated by the screw 102; the sliding block 105 is slidably connected with the guide rod 103 and is penetrated by the guide rod 103; the limiting frame 106 is fixedly connected with the threaded block 104, fixedly connected with the sliding block 105 and located between the threaded block 104 and the sliding block 105. In osteotomy, a longitudinal incision of about 5cm in length is first made in the medial malleolus, and the medial malleolus is incised layer by layer to expose the periosteal surface. Adopt four pieces of customization screws to pass through first locating hole 122 and second locating hole 123 will cut the bone baffle and be fixed in the malleolus, with the saw bit of pendulum saw again pass through logical groove 108 with the pendulum saw that cuts bone groove 107 (the pendulum saw that adopts is current medical pendulum saw, mainly includes shell, drive end and saw bit, and the drive end sets up on the shell, and the saw bit is connected with the drive end), cut bone groove 107 can restrict and cut bone scope, limit frame 106 then can restrict and cut bone degree of depth. According to the measurement result of the preoperative X-ray, the initial distance between the limiting frame 106 and the guide plate 115 is set so that the limiting frame 106 contacts with the casing of the swing saw to block the penetration of the saw blade before the osteotomy depth exceeds the ideal depth (i.e. the swing saw blade just cuts the medial malleolus). And then, gradually reducing the distance between the limiting frame 106 and the guide plate 115 according to the condition in operation until the osteotomy reaches the ideal depth, thereby completing the osteotomy and avoiding the damage to cartilage on the surface of the talus caused by the too deep saw blade in the osteotomy process. The position of the limiting frame 106 is adjusted according to the operation condition, and the adjusting mode of the limiting frame 106 is as follows: the screw 102 is rotated, and the guide rod 103 limits the position of the slide block 105, so that the limit frame 106 and the threaded block 104 can only slide along the guide rod 103, when the screw 102 rotates, the threaded block 104 can move along the screw 102 to drive the limit frame 106 to move, and the spacing between the limit frame 106 and the guide plate 115 is dynamically reduced in operation, so that the limit frame 106 can block the saw blade at different positions. The knob 109 is fixedly connected with the screw 102, and is located at one end of the screw 102 away from the guide plate 101. A user holding the knob 109 can facilitate rotation of the screw 102.
Secondly, the limiting block 110 is fixedly connected with the guide rod 103, and is located at one end of the guide rod 103 away from the guide plate 101. The stopper 110 can prevent the slider 105 from falling off the guide bar 103.
Meanwhile, the graduation marks 111 are positioned at the side edge of the guide rod 103; the graduation marks 111 facilitate viewing where the slider 105 is located, thereby controlling the depth of the blocked saw blade.
In addition, the universal ball 113 is rotatably connected with the first positioning plate 112 and is positioned at the inner side of the first positioning plate 112; the connecting shaft 114 is fixedly connected with the universal ball 113 and is positioned at one side of the universal ball 113; the guide plate 115 is fixedly connected with the connecting shaft 114, and is positioned at one end of the connecting shaft 114 away from the universal ball 113; two movable buckles 116 are respectively arranged at the side edges of the guide plate 115; the second positioning plate 117 is disposed between the two buttons 116.
The movable buckle 116 can connect and disconnect the second positioning plate 117 and the guide plate 115, fix the first positioning plate 112 and the second positioning plate 117 at the malleolus during osteotomy, and provide guiding during osteotomy by using the osteotomy groove 107 on the guide plate 115 ， The saw blade cuts bones along the shape of the osteotomy groove 107, the shape of the osteotomy groove 107 is designed according to actual requirements, and the osteotomy groove 107 can limit the osteotomy range for guiding; after the osteotomy is completed, the movable buckle 116 is controlled to not connect the guide plate 115 with the second positioning plate 117, and then the guide plate 115 can be driven to rotate by the rotation of the universal ball 113, so that the guide plate 115 is far away from the inner ankle osteotomy, and then the doctor turns over the guide plate 115 and the first positioning plate 112 together with the distal bone block to expose the top surface of the talus, and then the focus on the top surface of the talus is removed, thereby completing the focus removal operation. And then acquiring periosteum-bone complex 1-1.5cm above the osteotomy line to fill the bone groove at the focus clearance, reversely overturning the guide plate 115 after the grafting operation is finished, resetting the malleolus, fastening the movable buckle 116, and copying the reduction of the anatomically corrected malleolus.
A first k-wire is implanted in the first fixing hole 122 after the first customized screw is removed from the first fixing hole 122, a second k-wire is implanted in the second fixing hole 122 after the second customized screw is removed from the first fixing hole, the k-wire penetrates through the osteotomy line along the direction of the first fixing hole 122, and the reset medial malleolus is temporarily fixed. And then taking out the rest two customized screws, taking down the inner ankle osteotomy guide plate, driving two hollow screws along the Kirschner wire direction, and fixing the reset inner ankle to finish the operation.
Further, the movable buckle 116 includes a spring 118, a moving block 119 and a clamping block 120; the spring 118 is fixedly connected with the guide plate 115 and is positioned inside the guide plate 115; the moving block 119 is fixedly connected with the spring 118, is slidably connected with the guide plate 115, and is positioned at the side edge of the guide plate 115; the clamping block 120 is fixedly connected with the moving block 119 and is located at the side edge of the moving block 119. The second positioning plate 117 is provided with a clamping groove adapted to the clamping block 120, when the clamping block 120 is inserted into the clamping groove on the second positioning plate 117, the spring 118 is in a compressed state, and the two clamping blocks 120 can clamp the second positioning plate 117 by using elastic potential energy of the spring 118, so that the connection between the second positioning plate 117 and the guide plate 115 is completed; when the connection between the guide plate 115 and the second positioning plate 117 needs to be released, the clamping block 120 is pulled away from the second positioning plate 117, and at this time, the clamping block 120 drives the moving block 119 to move, so that the spring 118 is compressed.
Finally, the handle 121 is fixedly connected to the clamping block 120, and is located at a side edge of the clamping block 120. The user can grasp the handle 121 to facilitate pulling of the cartridge 120.
In the present utility model, when performing an osteotomy, the guiding plate 101 is fixed to the medial malleolus after the medial malleolus is exposed by slicing, specifically: the four customized screws are respectively implanted into the tibia inside after being respectively arranged at the first fixing holes 122 and the second fixing holes 123, the positions of the first positioning plate 112 and the second positioning plate 117 can be fixed, the saw blade of the pendulum saw passes through the through groove 108 and the osteotomy groove 107 (the adopted pendulum saw is an existing medical pendulum saw and mainly comprises a shell, a driving end and a saw blade, the driving end is arranged on the shell, the saw blade is connected with the driving end), the osteotomy groove 107 can limit the osteotomy range, and the limiting frame 106 can limit the osteotomy depth. According to the measurement result of the preoperative X-ray, the initial distance between the limiting frame 106 and the guide plate 115 is set so that the limiting frame 106 contacts with the casing of the swing saw to block the penetration of the saw blade before the osteotomy depth exceeds the ideal depth (i.e. the swing saw blade just cuts the medial malleolus). And then, gradually reducing the distance between the limiting frame 106 and the guide plate 115 according to the condition in operation until the osteotomy reaches the ideal depth, thereby completing the osteotomy and avoiding the damage to cartilage on the surface of the talus caused by the too deep saw blade in the osteotomy process. The position of the limiting frame 106 is adjusted according to the condition in operation, and the adjusting mode of the limiting frame 106 is as follows: rotating the screw 102, since the guide rod 103 limits the position of the slide block 105, the limit frame 106 and the thread block 104 can only slide along the guide rod 103, when the screw 102 rotates, the thread block 104 can move along the screw 102 to drive the limit frame 106 to move, and the spacing between the limit frame 106 and the guide plate 115 is dynamically reduced in operation, so that the limit frame 106 can block the saw blade at different positions; after osteotomy is completed, the clamping block 120 is pulled to be far away from the second positioning plate 117, so that the guide plate 115 and the second positioning plate 117 are not connected any more, then the guide plate 115 can be driven to rotate by the rotation of the universal ball 113, so that the guide plate 115 is far away from the inner malleolus osteotomy part, then a doctor turns over the guide plate 115 and the first positioning plate 112 together with a distal bone block to expose the top surface of the talus, then the focus is cleared, after the focus clearing operation is completed, a periosteum-bone complex is required to be obtained 1 cm to 1 cm above the osteotomy line to fill a bone groove at the focus clearing position, after the implantation operation is completed, the guide plate 115 is reversely turned over to reset the inner malleolus, then the clamping block 120 is pulled to drive the movable block 119 to move, so that the spring 118 is compressed, then the clamping block 120 is released after the clamping block 120 is moved to be close to the second positioning plate 117, the clamping block 120 is inserted into a slot hole on the second positioning plate 117 under the acting force of the spring 118, and the second positioning plate 115 is connected with the guide plate 117 again, and the anatomical correction can be repeated; through the mode, when the inner malleolus is used for osteotomy, the deep osteotomy and the anatomic reduction of the inner malleolus can be avoided.
The foregoing disclosure is only illustrative of one or more preferred embodiments of the present application and is not intended to limit the scope of the claims hereof, as it is to be understood by those skilled in the art that all or part of the process of implementing the described embodiment may be practiced otherwise than as specifically described and illustrated by the appended claims.
Claims (7)
1. A medial malleolus osteotomy guide plate is characterized in that,
the device comprises a guide plate, a screw rod, a guide rod, a thread block, a sliding block and a limit frame;
the guide plate is provided with an osteotomy groove; the screw is rotationally connected with the guide plate and is positioned at one side of the guide plate; the guide rod is fixedly connected with the guide plate and is positioned at one side of the guide plate; the thread block is in threaded connection with the screw rod and is penetrated by the screw rod; the sliding block is connected with the guide rod in a sliding way and is penetrated by the guide rod; the limiting frame is fixedly connected with the threaded block, fixedly connected with the sliding block and located between the threaded block and the sliding block, and is provided with a through groove.
2. A medial malleolus osteotomy guide as in claim 1,
the medial malleolus osteotomy guide plate further comprises a knob; the knob is fixedly connected with the screw rod and is positioned at one end of the screw rod far away from the guide plate.
3. A medial malleolus osteotomy guide as in claim 2, wherein,
the medial malleolus osteotomy guide plate further comprises a limiting block; the limiting block is fixedly connected with the guide rod and is located at one end, far away from the guide plate, of the guide rod.
4. A medial malleolus osteotomy guide as in claim 3,
the guide rod is provided with scale marks; the scale marks are positioned on the side edges of the guide rods.
5. A medial malleolus osteotomy guide as in claim 4,
the guide plate comprises a first positioning plate, a universal ball, a connecting shaft, a guide plate, two movable buckles and a second positioning plate; the universal ball is rotationally connected with the first positioning plate and is positioned at the inner side of the first positioning plate; the connecting shaft is fixedly connected with the universal ball and is positioned at one side of the universal ball; the guide plate is fixedly connected with the connecting shaft and is positioned at one end of the connecting shaft far away from the universal ball; the two movable buckles are respectively arranged on the side edges of the guide plate; the second locating plate is arranged between the two movable buckles.
6. A medial malleolus osteotomy guide as in claim 5,
the first locating plate is provided with two first fixing holes, the two first fixing holes are positioned on the top surface of the first locating plate, and the first fixing holes penetrate through the first locating plate in an included angle direction of 45 degrees with the first locating plate.
7. A medial malleolus osteotomy guide as in claim 6, wherein,
the second positioning plate is provided with two second fixing holes, the two second fixing holes are positioned on the top surface of the second positioning plate, and penetrate through the second positioning plate in a direction perpendicular to the second positioning plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223545996.3U CN219250324U (en) | 2022-12-29 | 2022-12-29 | Malleolus cuts bone baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223545996.3U CN219250324U (en) | 2022-12-29 | 2022-12-29 | Malleolus cuts bone baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219250324U true CN219250324U (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223545996.3U Active CN219250324U (en) | 2022-12-29 | 2022-12-29 | Malleolus cuts bone baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219250324U (en) |
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2022
- 2022-12-29 CN CN202223545996.3U patent/CN219250324U/en active Active
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