CN219306838U - Aiming device for pushing metatarsal bone after cutting - Google Patents
Aiming device for pushing metatarsal bone after cutting Download PDFInfo
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- CN219306838U CN219306838U CN202320298261.0U CN202320298261U CN219306838U CN 219306838 U CN219306838 U CN 219306838U CN 202320298261 U CN202320298261 U CN 202320298261U CN 219306838 U CN219306838 U CN 219306838U
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Abstract
The application relates to a metatarsal bone osteotomy post-pushing aiming device, which comprises an arc rod, a pushing assembly and an aiming guide assembly; the pushing assembly comprises a push rod sleeve, a base and a first sliding block, the first sliding block is sleeved on the circular arc rod, a radial screw hole pointing to the center of the circular arc rod is formed in the first sliding block, the push rod sleeve penetrates through the radial screw hole and is in threaded fit with the radial screw hole, the base is mounted on the push rod sleeve and is in threaded fit with the push rod sleeve, and a grapple is mounted on the base; a radial guide hole A pointing to the center of the circular arc rod is arranged beside the radial hole, and a radial guide hole B coaxially matched with the radial guide hole A is arranged on the base; the aiming guide assembly comprises a second sliding block and an aiming seat, and the second sliding block is sleeved on the arc rod; the aiming seat is rotationally connected with the second sliding block, and a horizontal guide hole is formed in the aiming seat; the device has simple structure and convenient operation and use, and can improve the operation convenience and displacement accuracy of the metatarsal head pushing after osteotomy, thereby shortening the operation time consumption and reducing the intake of X rays in the operation.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a metatarsal bone osteotomy postpushing aiming device.
Background
Hallux valgus deformity refers to a deformity of the foot caused by a laterally deflected displacement of the hallux at the first metatarsophalangeal joint. Because the outward deflection of the thumb can squeeze the 2 nd toe and even the 3 rd toe, the whole forefoot is painful, and the subluxation of the first metatarsophalangeal joint, the bunion and the like are caused, so that the bunion part is repeatedly rubbed in the process of wearing the shoes, calluses are formed, and corresponding pain symptoms are caused.
Moderate or severe hallux valgus deformity requires treatment with metatarsal osteotomies, a large number of X-ray fluoroscopy is needed during surgery to observe the effect of displacement of the osteotomies, and the osteotomies are completely needed to be pushed according to the experience of the operator to control the pushing degree and rotation of the osteotomies. At present, an adaptive guiding aiming device is not available, and when the metatarsal head is cut off and pushed, the metatarsal head is easy to generate unintended displacement such as rotation, angulation, lateral movement and the like, so that the operation has high requirements on the technique and proficiency of doctors, and a large amount of X-ray perspective is needed in the operation so as to ensure that the position angle of the metatarsal head meets the treatment requirement.
Disclosure of Invention
Aiming at the defects, the utility model provides a metatarsal head pushing and aiming device after metatarsal head cutting, which can improve the operation convenience and displacement accuracy of metatarsal head pushing after metatarsal head cutting and reduce the intake of X rays in operation.
The technical scheme adopted by the utility model for solving the technical problems is that the utility model provides a metatarsal bone osteotomy post-pushing aiming device which comprises an arc rod and a pushing component;
the pushing component comprises a push rod sleeve, a base and a first sliding block, wherein the first sliding block is sleeved on the circular arc rod and is locked with the circular arc rod through a locking piece, a radial screw hole pointing to the center of the circular arc rod is formed in the first sliding block, the push rod sleeve penetrates through the radial screw hole and is in threaded fit with the radial screw hole, the base is arranged on the push rod sleeve and is in threaded fit with the push rod sleeve, and a grappling hook is arranged on the base.
Further, a radial guide hole A pointing to the center of the arc rod is arranged beside the radial hole, and a radial guide hole B coaxially matched with the radial guide hole A is arranged on the base.
Further, the device also comprises an aiming guide assembly;
the aiming guide assembly comprises a second sliding block and an aiming seat, the second sliding block is sleeved on the arc rod, and the second sliding block is locked with the arc rod through a locking piece;
the sighting seat is rotationally connected with the second sliding block, is perpendicular to the second sliding block and is provided with a horizontal guide hole.
Further, a step shaft slot is formed in the second sliding block, the aiming seat penetrates through the step shaft slot, and the aiming seat is in running fit with the step shaft slot through the step shaft portion.
Furthermore, the lower end of the aiming seat is provided with external threads, and the lower end of the aiming seat is locked with the second sliding block through a nut.
Furthermore, two convex handles are symmetrically arranged at the upper end of the aiming seat, and each convex handle is provided with a horizontal guide hole.
Furthermore, the upper surface of the second sliding block is provided with angle scale marks on the periphery of the step shaft slot hole, and the aiming seat is provided with a pointer part matched with the angle scale marks.
Further, the retaining member is a locking nail, arc-shaped through holes sleeved with the arc rods are formed in the first sliding block and the second sliding block, radial locking screw holes communicated with the arc-shaped through holes are formed in the first sliding block and the second sliding block, and the locking nail is arranged in the radial locking screw holes.
Further, the base is arranged at the inner end side of the push rod sleeve, and the outer end of the push rod sleeve is provided with a knob operation part.
Further, one end of the arc rod is provided with a limiting blocking part.
Compared with the prior art, the utility model has the following beneficial effects: the device has the advantages of simple structure, convenient operation and use, and capability of improving the operation convenience and displacement accuracy of the metatarsal heads after osteotomy, thereby shortening the time consumption of the operation and reducing the intake of X rays in the operation;
the pushing component can guide the Kirschner wire and push the metatarsal heads, the grapple can hook the metatarsal stems after osteotomy, and the pushing rod sleeve can ensure the metatarsal heads and the metatarsal stems to synchronously move in the process of pushing the metatarsal heads to move relative to the metatarsal shafts;
aiming guide assembly can lead the k nail of connecting metatarsal bone and metatarsal stem, can finely tune in the art to make up the defect that circular arc pole guiding position is not accurate enough for the operation becomes more nimble in the art.
Drawings
The patent of the utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a metatarsal osteotomy postpushing aiming device.
In the figure:
1-an arc rod; 2-a first slider; 3-a base; 4-push rod sleeve; 5-grappling hooks; 6-a knob operation part; 7-locking piece; 8-a second slider; 9-aiming seat; 10-a limit stop part; 11-metatarsal heads; 12-the diaphysis of the plantar; 13-first k-wire; 14-second k-wire; 15-third k nail; 16-fourth k nail; 17-convex handle.
Detailed Description
The preferred embodiments of the present utility model will be described in more detail below, however, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Moderate or severe hallux valgus deformity requires treatment with metatarsal osteotomies, a large number of X-ray fluoroscopy is needed during surgery to observe the effect of displacement of the osteotomies, and the osteotomies are completely needed to be pushed according to the experience of the operator to control the pushing degree and rotation of the osteotomies. At present, an adaptive guiding aiming device is not available, and when the metatarsal head is cut off and pushed, the metatarsal head is easy to generate unintended displacement such as rotation, angulation, lateral movement and the like, so that the operation has high requirements on the technique and proficiency of doctors, and a large amount of X-ray perspective is needed in the operation so as to ensure that the position angle of the metatarsal head meets the treatment requirement.
Aiming at the problems, the embodiment provides the metatarsal head pushing aiming device after metatarsal bone cutting, which can improve the operation convenience and displacement accuracy of metatarsal head pushing after metatarsal bone cutting and reduce the intake of X rays in operation.
As shown in fig. 1, the metatarsal bone postosteotomy pushing and aiming device comprises an arc rod 1, a pushing component and an aiming guide component;
the pushing assembly comprises a push rod sleeve 4, a base 3 and a first sliding block 2, wherein the first sliding block 2 is sleeved on the circular arc rod 1, the first sliding block 2 is locked with the circular arc rod 1 through a locking piece 7, a radial screw hole pointing to the center of the circular arc rod 1 is formed in the first sliding block 2, the push rod sleeve 4 penetrates through the radial screw hole and is in threaded fit with the radial screw hole, the base 3 is mounted on the push rod sleeve 4 and is in threaded fit with the push rod sleeve, and a grapple 5 is mounted on the base 3;
the push rod sleeve 4 can guide the Kirschner nails and push the truncated metatarsal heads 11, the grapple 5 can hook the cut metatarsal stems 12, the grapple 5 plays a role of hanging, and the synchronous movement of the metatarsal heads 11 and the metatarsal stems 12 is ensured in the process of pushing the metatarsal heads 11 to move relative to the metatarsal shafts 12;
the aiming guide assembly comprises a second sliding block 8 and an aiming seat 9, wherein the second sliding block 8 is sleeved on the arc rod 1, and the second sliding block 8 is locked with the arc rod 1 through a locking piece 7;
the aiming seat 9 is rotatably connected with the second sliding block 8, the aiming seat 9 is perpendicular to the second sliding block 8, and a horizontal guide hole is formed in the aiming seat 9 and used for aiming and guiding the k nail.
For guiding the k nail, a radial guide hole A pointing to the circle center of the circular arc rod 1 is arranged beside the radial hole, and a radial guide hole B coaxially matched with the radial guide hole A is arranged on the base 3;
the using steps are as follows:
firstly taking a pushing component, taking a push rod sleeve 4 and a radial guide hole A as guide holes, respectively penetrating a first k nail 13 into the push rod sleeve 4, and penetrating a second k nail 14 into the radial guide hole A and the radial guide hole B;
the first k-wire 13 and the second k-wire 14 are guided by the pushing component and drilled into the metatarsal heads 11;
removing the pusher assembly and then cutting off the metatarsal heads 11 from the metatarsal shafts 12;
the pushing component is arranged in the arc rod 1 and fixed after being arranged in place, and is sleeved with the first k-wire 13 and the second k-wire 14, so that the grapple 5 can hook the proximal end of the cut metatarsal shaft 12 after the bone cutting;
holding the arc rod 1 and the base 3, and rotating the outer end of the push rod sleeve 4 to push the metatarsal heads 11 to a preset position by the push rod sleeve 4; the metatarsal heads 11 are provided with two Kirschner nails to form a plane stable structure, so that the metatarsal heads 11 are limited by the Kirschner nails and the pushing component in the pushing process, and do not rotate, angulate or laterally move, thereby realizing accurate displacement and achieving the aim of accurately correcting deformity;
after pushing in place, the aiming guide component is installed in the arc rod 1 and fixed after being installed in place, the aiming seat 9 is rotated, so that the horizontal guide hole faces the direction of the k-wire nail to be implanted;
new k-nails (namely a third k-nail 15 and a fourth k-nail 16) are sleeved into the horizontal guide hole, and the k-nails are sequentially drilled into the metatarsal shaft 12 and the metatarsal head 11 so as to realize the connection of the metatarsal shaft 12 and the metatarsal head 11.
The device has simple structure and convenient operation and use, and can improve the operation convenience and displacement accuracy of the metatarsal heads 11 after osteotomy, thereby shortening the time consumption of the operation and reducing the intake of X rays in the operation;
the pushing component can guide the Kirschner wire and push the metatarsal head 11, the grapple 5 can hook the cut metatarsal stem 12, and the synchronous movement of the metatarsal head 11 and the metatarsal stem 12 is ensured when the push rod sleeve 4 pushes the metatarsal head 11 to move relative to the metatarsal shaft 12;
aiming guide assembly can guide the k nail of connecting metatarsal head 11 and metatarsal stem 12, can finely tune in the art to make up for the defect that circular arc pole 1 guiding position is not accurate enough for the operation becomes more nimble in the art.
In this embodiment, the second slider 8 is provided with a step shaft slot, the aiming block 9 penetrates the step shaft slot, and the aiming block 9 is rotatably matched with the step shaft slot through a step shaft portion.
In this embodiment, the lower end of the aiming block 9 is provided with external threads, the lower end of the aiming block 9 is locked with the second slider 8 through a nut, the nut is unscrewed, the aiming block 9 can rotate relative to the second slider 8, thereby adjusting the angle position of the horizontal guide hole, and after the adjustment is completed, the aiming block 9 can be fixed by screwing the nut.
In this embodiment, two protruding handles 17 are symmetrically disposed at the upper end of the aiming block 9, each protruding handle 17 is provided with a horizontal guide hole, and the protruding handles 17 are used for an operator to hold the rotation adjusting aiming block 9, so as to improve the adjusting efficiency, the operation convenience and the comfort.
In this embodiment, for more accurate adjustment of the angle position, the upper surface of the second slider 8 is provided with angle graduation marks on the periphery of the step shaft slot, and the aiming seat 9 is provided with a pointer portion that is matched with the angle graduation marks.
In this embodiment, retaining member 7 is the locking nail, all be provided with the arc through-hole that cup joints with circular arc pole 1 on first slider 2, the second slider 8, all be provided with the radial locking screw of intercommunication arc through-hole on first slider 2, the second slider 8, the locking nail is installed in radial locking screw, can slide the position of adjusting corresponding slider through unscrewing the locking nail, then can fix corresponding slider through screwing the locking nail.
In this embodiment, for convenience of operation, the base 3 is disposed at an inner end side of the push rod sleeve 4, and a knob operation part 6 is disposed at an outer end of the push rod sleeve 4.
In this embodiment, a limiting stop 10 is disposed at one end of the arc rod 1, so as to limit and block the pushing component at the limit position.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters refer to like items and, thus, once an item is defined, no further discussion thereof is necessary in the following.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the indicated azimuth or positional relationships, merely for convenience of describing the present application and simplifying the description, and without being stated to the contrary, these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe spatial positional relationships of features. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted.
In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.
If the application discloses or relates to components or structures that are fixedly connected to each other, then unless otherwise stated, the fixedly connected structure is understood as: a detachable fixed connection (e.g. using a bolt or screw connection) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
While the foregoing is directed to the preferred embodiment, other and further embodiments of the utility model will be apparent to those skilled in the art from the following description, wherein the utility model is described, by way of illustration and example only, and it is intended that the utility model not be limited to the specific embodiments illustrated and described, but that the utility model is to be limited to the specific embodiments illustrated and described.
Claims (10)
1. A metatarsal bone cuts bone back and passes sighting device which characterized in that: comprises an arc rod and a pushing component;
the pushing component comprises a push rod sleeve, a base and a first sliding block, wherein the first sliding block is sleeved on the circular arc rod and is locked with the circular arc rod through a locking piece, a radial screw hole pointing to the center of the circular arc rod is formed in the first sliding block, the push rod sleeve penetrates through the radial screw hole and is in threaded fit with the radial screw hole, the base is arranged on the push rod sleeve and is in threaded fit with the push rod sleeve, and a grappling hook is arranged on the base.
2. The post metatarsal osteotomy push-on targeting device of claim 1, wherein: the side of the radial screw hole is provided with a radial guide hole A pointing to the circle center of the arc rod, and the base is provided with a radial guide hole B coaxially matched with the radial guide hole A.
3. The post metatarsal osteotomy push-on targeting device of claim 1, wherein: the sighting guide assembly is also included;
the aiming guide assembly comprises a second sliding block and an aiming seat, the second sliding block is sleeved on the arc rod, and the second sliding block is locked with the arc rod through a locking piece;
the sighting seat is rotationally connected with the second sliding block, is perpendicular to the second sliding block and is provided with a horizontal guide hole.
4. A metatarsal osteotomy postlapse targeting device according to claim 3, wherein: the second sliding block is provided with a step shaft slot hole, the aiming seat penetrates through the step shaft slot hole, and the aiming seat is in rotary fit with the step shaft slot hole through the step shaft part.
5. The post metatarsal osteotomy push-on targeting device of claim 4, wherein: the lower end of the aiming seat is provided with external threads, and the lower end of the aiming seat is locked with the second sliding block through a nut.
6. The post metatarsal osteotomy push-on targeting device of claim 4, wherein: two convex handles are symmetrically arranged at the upper end of the aiming seat, and each convex handle is provided with a horizontal guide hole.
7. The post metatarsal osteotomy push-on targeting device of claim 4, wherein: the upper surface of the second sliding block is provided with angle scale marks on the periphery of the step shaft slot hole, and the aiming seat is provided with a pointer part matched with the angle scale marks.
8. A metatarsal osteotomy postlapse targeting device according to claim 3, wherein: the locking piece is a locking nail, arc-shaped through holes sleeved with the arc rods are formed in the first sliding block and the second sliding block, radial locking screw holes communicated with the arc-shaped through holes are formed in the first sliding block and the second sliding block, and the locking nail is arranged in the radial locking screw holes.
9. The post metatarsal osteotomy push-on targeting device of claim 1, wherein: the base is arranged at the inner end side of the push rod sleeve, and the outer end of the push rod sleeve is provided with a knob operation part.
10. The post metatarsal osteotomy push-on targeting device of claim 1, wherein: one end of the arc rod is provided with a limiting blocking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320298261.0U CN219306838U (en) | 2023-02-23 | 2023-02-23 | Aiming device for pushing metatarsal bone after cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320298261.0U CN219306838U (en) | 2023-02-23 | 2023-02-23 | Aiming device for pushing metatarsal bone after cutting |
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| CN219306838U true CN219306838U (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320298261.0U Active CN219306838U (en) | 2023-02-23 | 2023-02-23 | Aiming device for pushing metatarsal bone after cutting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117297772A (en) * | 2023-11-30 | 2023-12-29 | 四川大学华西医院 | Method for planning hallux valgus operation of foot and related product |
-
2023
- 2023-02-23 CN CN202320298261.0U patent/CN219306838U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117297772A (en) * | 2023-11-30 | 2023-12-29 | 四川大学华西医院 | Method for planning hallux valgus operation of foot and related product |
| CN117297772B (en) * | 2023-11-30 | 2024-02-13 | 四川大学华西医院 | Method for planning hallux valgus operation of foot and related product |
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