CN111887932A - Auxiliary positioning device for foot osteotomy - Google Patents
Auxiliary positioning device for foot osteotomy Download PDFInfo
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- CN111887932A CN111887932A CN202010757979.2A CN202010757979A CN111887932A CN 111887932 A CN111887932 A CN 111887932A CN 202010757979 A CN202010757979 A CN 202010757979A CN 111887932 A CN111887932 A CN 111887932A
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- foot
- osteotomy
- guide
- positioning device
- fixing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1775—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the foot or ankle
Abstract
The invention belongs to the technical field of auxiliary positioning of foot osteotomy, and aims to solve the problem of large error of foot osteotomy direction in the existing foot osteotomy operation process. To this end, the invention provides a foot osteotomy auxiliary positioning device, which comprises a fixing part, a posture adjusting part and a guiding part, wherein the posture adjusting part is connected with the fixing part, the fixing part is used for fixing a foot to be osteotomy, the posture adjusting part is used for adjusting the position and the orientation of the guiding part relative to the foot, and the guiding part is used for guiding a guide pin to be fixed to the foot. Through the synergistic action of fixed part, position appearance regulating part and guide part, to the foot of different deformity degrees, the homoenergetic guides the guide pin and fixes to the foot of treating the osteotomy according to required position and orientation, has guaranteed the accurate positioning of guide pin to accurate osteotomy direction has been guaranteed, reaches the correction effect of ideal.
Description
Technical Field
The invention belongs to the technical field of auxiliary positioning of foot osteotomy, and particularly provides an auxiliary positioning device for foot osteotomy.
Background
Forefoot disease is a clinically very common condition, the most representative of which is hallux valgus deformity. Due to long-term extrusion of the forefoot by wearing high-heeled shoes or genetic factors, forefoot deformities such as hallux valgus and the like are common in modern women, and great trouble is brought to the life of patients. With the continuous progress of science and technology and medical technology, foot osteotomy becomes one of the main methods for correcting foot deformities such as hallux valgus. Foot osteotomies are numerous and, as one of the most common, an example of an orthopedic metatarsal osteotomy in hallux valgus is given below.
Hallux valgus deformity refers to the lateral deflection of the big toe of the foot at the first metatarsophalangeal joint. Typically, depending on the patient's condition, it may be desirable to correct the deformity by performing a metatarsal osteotomy procedure, such as a first metatarsal osteotomy, which is shortened and fixed after being moved down an appropriate length to create a specific position of the distal metatarsal relative to the proximal metatarsal. Fig. 1 to 4 are views illustrating a state in which a first metatarsal is cut off in a conventional foot osteotomy, fig. 2 is a view illustrating a state in which two portions of the first metatarsal cut off in the conventional foot osteotomy are moved, fig. 3 is a view illustrating a state in which an unnecessary portion of the first metatarsal is removed in the conventional foot osteotomy, and fig. 4 is a view illustrating a state in which two portions of the first metatarsal cut off in the conventional foot osteotomy are fixed. In the process of performing the foot osteotomy, as shown in fig. 1, firstly, two knives are cut on the first metatarsal bone along a specific preoperatively determined direction to divide the first metatarsal bone into a main stem 11 and a distal bone block 12, the main stem 11 and the distal bone block 1 respectively form a "V" shaped ridge and a "V" shaped groove at the broken position, and the extending directions of the "V" shaped ridge and the "V" shaped groove form certain included angles with the axis of the normal phalanx (for example, the extending directions of the "V" shaped ridge and the "V" shaped groove are inclined towards the heel and sole of the foot); as shown in fig. 2, the distal bone piece 12 is then displaced a certain distance in the direction in which the "V" shaped ridge of the stem 11 extends, the overall length of the first metatarsal 1 is shortened and the distal bone piece 5 is displaced a certain distance downwards with respect to the stem 4; as shown in fig. 3, the oscillating saw 2 is then used to cut off the excess portion of the trunk 11; finally, as shown in fig. 4, the stem 11 and the distal bone block 12 are fixed using fasteners such as steel nails.
Because of the different deformities of different patients, it is necessary to displace the distal metatarsal bone from the proximal metatarsal bone (including different directions and distances), and the direction and distance of the osteotomy are controlled clinically. For example, the metatarsal osteotomy direction is inclined only in a horizontal plane toward the heel or toe direction to shorten or lengthen the metatarsal length after an osteotomy correction, the osteotomy direction is inclined only upward or downward in a plane perpendicular to the normal toe axis to raise or lower the proximal metatarsal end after an osteotomy correction, or a combination of the two. However, in the process of osteotomy operation, because no proper quantitative tool for determining direction is available, the doctor with rich experience can determine the osteotomy direction according to experience and directly perform osteotomy, so that the experience of the doctor is difficult to quantify during scientific research and academic communication, and the communication is hindered; however, doctors with relatively poor experience can drive the guide pin into the first metatarsal 1 after visually observing the osteotomy direction in the operation (as shown in fig. 5, the mark 3 shows the driving direction of the guide pin on the shown plane), and then cut the first metatarsal 1 by using the pendulum saw 2 with reference to the direction of the guide pin, which actually cannot quantify the osteotomy direction of themselves, and only can accumulate experience by intuition of themselves, obviously, the learning curve of the doctors can be obviously prolonged. Because the foot deformity condition of different patients is complicated and various, data can not be quantized, the bone cutting direction is determined to have larger errors only by directly cutting bones through experience and striking a guide pin in a visual inspection mode, the optimal effect is corrected after the bone cutting, even the result of the failure of the correction operation is caused, and meanwhile, if the bone cutting direction can be accurately quantized, the effect of double results with half the effort can be realized on the experience accumulation of doctors and the mutual learning and communication among the doctors.
Therefore, there is a need in the art for a new solution to the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem of a large error in the bone cutting direction of the foot during the existing bone cutting operation of the foot, the present invention provides a foot bone cutting auxiliary positioning device, which includes a fixing part, a posture adjusting part connected to the fixing part, and a guiding part arranged on the posture adjusting part, wherein the fixing part is used for fixing the foot to be cut, the posture adjusting part is used for adjusting the position and orientation of the guiding part relative to the foot, and the guiding part is used for guiding a guide pin to be fixed to the foot.
In a preferred aspect of the above-described auxiliary positioning device for foot osteotomy, the posture adjustment unit includes: a first adjusting component connected to the fixing part and used for adjusting the position of the guide part relative to the foot part along the length direction of the foot part; a second adjustment assembly connected to the first adjustment assembly for adjusting a position of the guide portion relative to the foot portion in a thickness direction of the foot portion; a third adjustment assembly connected to the second adjustment assembly for adjusting an orientation of the guide.
In a preferred technical solution of the above-mentioned foot osteotomy auxiliary positioning device, the first adjusting assembly includes a guide rail detachably connected to the fixing portion and a first moving member cooperatively connected with the guide rail, the guide rail is located on one side of the fixing portion, the second adjusting assembly is connected to the first moving member, a first scale mark indicating a relative position of the first moving member and the guide rail is provided on the guide rail, the first moving member is provided with a first locking member, and the first locking member is used for locking the first moving member.
In a preferred embodiment of the above foot osteotomy auxiliary positioning device, the second adjustment assembly includes an upright post disposed on the first moving member and a second moving member capable of moving along an axial direction of the upright post, the third adjustment assembly is connected to the second moving member, the upright post is disposed with a second scale mark indicating a relative position of the second moving member and the upright post, and the second moving member is disposed with a second locking member for locking the second moving member.
In the above-mentioned preferred technical solution of the foot osteotomy auxiliary positioning device, the third adjusting assembly comprises a link, a first end of the link is pivotally connected with the second moving member through a third locking member, the guide is connected to a second end of the link, the first end of the link is provided with a third graduation line for indicating a pivoting angle of the link, and the third locking member is used for locking the link, wherein a pivot axis of the link is parallel or collinear with an axis of the upright.
In a preferred embodiment of the above auxiliary positioning device for foot osteotomy, the guide part is pivotally connected to the second end of the connecting rod through a fourth locking member, the fourth locking member is sleeved with a scale ring for indicating a pivoting angle of the guide part, the fourth locking member is used for locking the guide part, and a pivot axis of the guide part is perpendicular to a pivot axis of the connecting rod.
In a preferred embodiment of the above-mentioned auxiliary positioning device for foot osteotomy, the guide part includes a body, and a channel for allowing the guide pin to pass through is formed on the body.
In a preferred embodiment of the above-mentioned foot osteotomy auxiliary positioning device, a cross-sectional area of the end of the channel gradually decreases along a direction of passing the guide pin.
In a preferred embodiment of the above-mentioned foot osteotomy auxiliary positioning device, the fixing portion includes a first fixing member and a second fixing member fixedly connected or integrally formed, and the first fixing member and the second fixing member are respectively used for fixing the foot and the corresponding leg.
In a preferred embodiment of the above auxiliary positioning device for foot osteotomy, the first fixing member is provided with a plurality of hollow holes, and the guide rail is connected to a part of the hollow holes through a connecting member.
As can be understood by those skilled in the art, in the technical scheme of the invention, the foot osteotomy auxiliary positioning device comprises a fixed part, an attitude adjusting part connected with the fixed part and a guide part arranged on the attitude adjusting part, in the process of carrying out osteotomy on the foot, the foot to be osteotomy is fixed to the fixing part by the aid of the foot osteotomy auxiliary positioning device, the position and the orientation of the guide part relative to the foot part are adjusted through the pose adjusting part, then the guide pin is guided by the guide part to be fixed to the foot part according to the required position and direction, the accuracy of the fixed position and the orientation of the guide pin is ensured, and then rely on the guide pin guide doctor to cut the bone according to accurate direction, avoided directly cutting the bone by experience or confirm guide pin fixed position and orientation with the eye observation mode and lead to the great problem of osteotomy angle deviation, and then reached ideal correction effect. Different patients' foot size is different to the foot deformity condition also has the difference, and the doctor can conveniently adjust the position and the direction of guide part for the foot according to particular case, thereby the guide pin is fixed to the foot according to suitable position, has satisfied the location and the orientation demand of different osteotomy directions, and application scope is extensive.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic representation of a prior art foot osteotomy after the first metatarsal has been severed;
FIG. 2 is a schematic representation of a prior art foot osteotomy procedure with the two portions of the first metatarsal cut removed;
FIG. 3 is a schematic view of a prior art foot osteotomy procedure with the excess portion of the first metatarsal removed;
FIG. 4 is a schematic representation of a prior art foot osteotomy procedure with the two portions of the first metatarsal cut fixed;
FIG. 5 is a schematic view of the state of determining the osteotomy direction by means of the guide pin in the existing foot osteotomy;
FIG. 6 is a first schematic view of a first embodiment of a device for assisting in positioning a foot osteotomy in accordance with the present invention;
FIG. 7 is a second schematic structural view of a foot osteotomy aid in positioning the device in accordance with one embodiment of the present invention;
figure 8 is a side view of a foot osteotomy aid in positioning the device in accordance with one embodiment of the present invention.
List of reference numerals:
1. a first metatarsal bone; 11. a trunk; 12. a distal bone piece; 2. swinging the saw; 3. the driving direction of the guide pin; 4. a fixed part; 41. a foot fixing plate; 411. a first hollowed-out hole A; 412. a first hollow-out hole B; 42. a leg fixing plate; 421. a second hollowed-out hole; 5. a pose adjusting section; 51. a first adjustment assembly; 511. a support arm; 512. a cylindrical slide rail; 513. a slider; 514. a screw; 515. a first scale mark; 52. a second adjustment assembly; 521. a cylinder; 522. an annular hoop; 523. a cantilever; 524. a first tightening screw; 525. a second scale mark; 53. a third adjustment assembly; 531. a connecting rod; 532. a second tightening screw; 533. a third scale line; 534. a support plate; 535. thirdly, screwing down the screw; 536. a scale ring; 537. a hook; 6. a guide portion.
Detailed Description
First, it should be understood by those skilled in the art that the embodiments described below are merely for explaining technical principles of the present invention, and are not intended to limit the scope of the present invention. For example, although the first positioning member and the second positioning member in the fixing portion of the foot osteotomy auxiliary positioning device of the present invention are integrally formed, those skilled in the art may adjust them as needed to suit the specific application, for example, the first positioning member and the second positioning member in the fixing portion may be separately formed and then fixedly connected together by welding, riveting, screwing, etc. Obviously, the technical solution after adjustment still falls into the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Based on the problem of large error of the foot osteotomy direction in the prior foot osteotomy operation process pointed out by the background technology, the invention provides a foot osteotomy auxiliary positioning device, aiming at guiding a guide pin to be fixed to a foot to be osteotomy according to an accurate position and orientation. Specifically, the auxiliary positioning device for foot osteotomy comprises a fixing part, a posture adjusting part and a guide part, wherein the posture adjusting part is connected with the fixing part, the fixing part is used for fixing a foot to be osteotomy, the posture adjusting part is used for adjusting the position and the orientation of the guide part relative to the foot, and the guide part is arranged on the posture adjusting part and used for guiding a guide pin to be fixed to the foot. By means of the auxiliary positioning device for foot osteotomy, a foot to be osteotomy is fixed to the fixing part before an osteotomy operation, then the position and the orientation of the guide part relative to the foot are adjusted by adjusting the posture adjusting part, and the guide pin is fixed to the foot according to the accurate position and orientation under the guiding action of the guide part. During the osteotomy procedure, an osteotomy tool such as an oscillating saw is used to perform the osteotomy with reference to the orientation of the guide pin.
The foot to be osteotomy is fixed to the fixing portion, and therefore deviation of the osteotomy direction caused by accidental deviation of the foot in the osteotomy operation process is avoided. Through the synergism of fixed part, position adjustment portion and guide part, to the foot of different degree of deformity, all can be through adjusting the position and the orientation of guide part for the foot, make guide part guide pin fix to the foot of treating the osteotomy according to accurate position and direction, guaranteed the accurate positioning and the orientation of guide pin to guaranteed accurate osteotomy direction when the osteotomy, and then reached the correction effect of ideal.
Referring now to fig. 6-8, the present invention is described in detail with reference to the accompanying drawings. Fig. 6 is a first structural schematic view of a foot osteotomy auxiliary positioning device according to an embodiment of the invention, fig. 7 is a second structural schematic view of the foot osteotomy auxiliary positioning device according to an embodiment of the invention, and fig. 8 is a side view of the foot osteotomy auxiliary positioning device according to an embodiment of the invention.
As shown in fig. 6 to 8, the foot osteotomy auxiliary positioning device includes a fixing portion 4, a pose adjusting portion 5 connected to the fixing portion 4, and a guiding portion 6 disposed on the pose adjusting portion 5, the fixing portion 4 includes a first fixing member and a second fixing member which are integrally formed, the first fixing member is a foot fixing plate 41 for fixing a foot to be osteotomy, the second fixing member is a leg fixing plate 42 for fixing a corresponding leg, a plurality of first hollow holes are distributed on the foot fixing plate 41, the first hollow holes include two first hollow holes a (411) close to two ends of the foot fixing plate 41 and a plurality of first hollow holes B (412) distributed on the foot fixing plate 41, and a plurality of second hollow holes 421 are distributed on the foot fixing plate 42. When the foot is abutted to the foot fixing plate 41, a bandage/rubber band/elastic band or the like is passed through the first through-holes B (412) around the foot and the foot is fastened and fixed to the foot fixing plate 41. Similarly, when the corresponding leg portion abuts against the leg portion fixing plate 42, a bandage/rubber tape/elastic tape or the like is passed through the second hollow hole 421 around the leg portion and the leg portion is fastened and fixed to the leg portion fixing plate 42.
A plurality of first hollowed holes B (412) are distributed on the foot fixing plate 41, a plurality of second hollowed holes 421 are distributed on the leg fixing plate 42, and different first hollowed holes B412 and second hollowed holes 421 can be selected according to the size of the foot and the thickness of the leg of a patient to penetrate through a bandage, a rubber belt, an elastic belt and the like to meet the requirements of fixing the foot and the leg with different sizes. Meanwhile, the hollow holes also reduce the weight of the fixing part, and the fixing part is convenient to mount and dismount.
It is understood that the first fixing member and the second fixing member are integrally formed, and may be adjusted by those skilled in the art according to actual needs, for example, the first positioning member and the second positioning member may be separately formed and then fixedly connected together by welding, riveting, screwing, or the like. Such flexibility in adjustment and modification is within the scope of the present invention without departing from the principle and scope of the present invention.
With continued reference to fig. 6 to 8, the posture adjusting section 5 includes a first adjusting member 51 connected to the fixing section 4, a second adjusting member 52 connected to the first adjusting member 51, and a third adjusting member 53 connected to the second adjusting member 52, the first adjusting member 51 for adjusting the position of the guide 6 relative to the foot in the length direction of the foot, the second adjusting member 52 for adjusting the position of the guide 6 relative to the foot in the thickness direction of the foot, and the third adjusting member for adjusting the orientation of the guide 6.
Specifically, the first adjusting assembly 51 includes a support arm 511, a guide rail, and a first moving member. At the bottom of the foot fixing plate 41 near both ends, one ends of the two supporting arms 511 are respectively fixed to the foot fixing plate 41 by a connection member (e.g., a screw) being engaged with the first hollow a (411), and the other ends thereof protrude to one side of the foot fixing plate 41. A guide rail is connected between the two supporting arms 511, and a first moving member is connected to the guide rail in a matching manner. For example, the guide rail includes two parallel cylindrical slide rails 512, and two ends of the two cylindrical slide rails 512 are respectively fixed to one ends of the two supporting arms 511, which extend out of the foot fixing plate 41. The first moving member is a sliding block 513, the sliding block 513 is slidably connected to the two cylindrical sliding rails 512, a first locking member (e.g., a screw 514) is disposed on a side of the sliding block 513, a first graduation mark 215 is disposed on a surface of the cylindrical sliding rail 212 far away from the foot fixing plate 41, and an operator can move the sliding block 213 relative to the cylindrical sliding rail 212 by a required distance along a length direction of the foot according to the first graduation mark 215. The two support arms 511 are detachably connected with the foot fixing plate 41 through a connector such as a screw, so that the guide rail in the first adjusting assembly can be conveniently fixed to the left side or the right side of the foot fixing plate 41 according to requirements, and the bone cutting auxiliary positioning device is suitable for the osteotomy auxiliary positioning of the left foot or the right foot.
Further, in a possible embodiment, the supporting arm 511 may further be provided with a positioning pillar, a cross-sectional dimension of the positioning pillar is the same as a dimension of the first hollow hole B (412) of the foot fixing plate 41, when the supporting arm 511 is fixed to the foot fixing plate 41, a part of the first hollow hole B (412) is penetrated through by the positioning pillar, and the supporting arm 511 and the foot fixing plate 41 are fixed together by a fastener such as a screw and the like in cooperation with the first hollow hole a (411).
The positioning posts are matched with part of the first through holes B (412), so that the supporting arms 511 and the foot fixing plate 41 can be more reliably fixed and connected.
Still referring to fig. 6 to 8, the second adjusting assembly 52 includes an upright (e.g., a cylinder 521) disposed on the sliding block 513 and a second moving member capable of moving along an axial direction of the upright, the second moving member includes an annular collar 522 and a cantilever 523 integrally formed with the annular collar 522, the annular collar 522 is disposed on the cylinder 521 and is capable of moving up and down along an axial direction of the cylinder 521 and rotating around an axis of the cylinder 521, a second locking member, e.g., a first tightening screw 524, is disposed at an opening of the annular collar 522, and the annular collar 522 can be tightened to the cylinder 521 by the first tightening screw 524 to lock a relative position between the annular collar 522 and the cylinder 521. A second graduation 545 is provided on the cylinder 521 for indicating the vertical position of the circular clamp 522 relative to the cylinder 521, and an operator can move the circular clamp 522 in the vertical direction by a desired distance relative to the cylinder 521 according to the second graduation 545.
Referring also to fig. 6 to 8, the third adjustment assembly 53 includes a link 531, a first end of the link 531 being pivotally connected to the free end of the cantilever 523 by a third locking member, the pivot axis of the link 531 being parallel to the axis of the cylinder 221. Specifically, the first end of the link 531 is provided with a through hole, the free end of the cantilever 523 is provided with a threaded hole, the third locking member is a second tightening screw 532, the second tightening screw 532 passes through the through hole of the first end of the link 531 and is threaded partially into the threaded hole of the free end of the cantilever 523, and the link 523 can rotate around the second tightening screw 532 in an unthreaded state. The first end of the link 531 forms an arc surface on which a third scale 523 for indicating a pivoting angle of the both is provided, and an operator can pivot the link 513 by a desired angle with respect to the cantilever 523 according to the third scale 523. After the link 513 is rotated to a desired angle with respect to the cantilever arm 523, the threaded section of the second tightening screw 532 is continued to tighten the second tightening screw 532, frictionally fastening the link 531 and the cantilever arm 523 together, and thereby locking the link 532.
It will be appreciated that the above arrangement is only one specific arrangement and a person skilled in the art may arrange the third fixing member as a bolt and a nut cooperating with each other, the first end of the link 531 and the free end of the cantilever 523 each being provided with a through hole through which the bolt passes and is threadedly coupled with the nut.
Still referring to fig. 6 to 8, the guide 6 is pivotally connected to the second end of the link 531 by a fourth locking member, and the pivot axis of the guide 6 is perpendicular to the axis of the link 531. Specifically, the guiding part 6 is a guiding cylinder, the guiding cylinder comprises a columnar body and a channel formed on the body for allowing the guide pin to pass through, and the sectional area of the tail end of the channel is gradually reduced along the passing direction of the guide pin so as to facilitate the accurate positioning of the guide pin. A support plate 534 extending vertically upwards is arranged at the second end of the connecting rod 531, a through hole is formed in the support plate 534, the fourth locking member is a third tightening screw 535, the third tightening screw 535 penetrates through the through hole in the support plate 534, a part of a threaded section of the third tightening screw 535 is screwed into a threaded hole of the scale ring 536, a fourth scale mark is arranged on the outer ring of the scale ring 536, a hook 537 is fixedly connected to one side of the scale ring 536 away from the support plate 534, the guide cylinder is fixedly connected with the scale ring 536 through the hook 537, and at this time, the guide cylinder, the scale ring 536 and the third tightening screw 535 can rotate synchronously. The operator can synchronously rotate the guide cylinder, the scale ring 536 and the third tightening screw 535 according to the fourth scale mark on the scale ring 536, so that after the guide cylinder pivots to a set angle, the scale ring 536 is fixed, the threaded section of the third tightening screw 535 is continuously screwed into the threaded hole of the scale ring 536, and the scale ring 536 and the support plate 534 are fastened together through friction force, thereby locking the guide cylinder.
By adjusting first adjustment assembly 51, second adjustment assembly 52, and third adjustment assembly 53, the three cooperate to bring the guide cylinder to a desired position and orientation, and thereafter pass the guide pin through the channel of the guide cylinder and secure the guide pin to the foot in that position and orientation. The pose adjusting part 5 comprises a first adjusting component 51, a second adjusting component 52 and a third adjusting component 53, and under the synergistic action of the first adjusting component, the second adjusting component and the third adjusting component, the position and the orientation of the guide part 6 relative to the foot are rich and diverse, the guide pin positioning requirements required by different foot osteotomy operations can be met to a large extent, and the application range is wide. Through the indication of the scale marks and the scale rings in the first adjusting assembly 51, the second adjusting assembly 52 and the third adjusting assembly 53, the related data of the position and the direction of the adjustment of the guide part can be accurately quantified and accumulated, thereby facilitating the accumulation summary of the own experience of doctors and the communication and study among different doctors.
Those skilled in the art will understand that in an alternative embodiment, the posture adjustment portion may include only the third adjustment member 53 in the above-described embodiment, only the first adjustment member 51 and the third adjustment member 53 in the above-described embodiment, or only the second adjustment member 52 and the third adjustment member 53 in the above-described embodiment, and the connection position is adaptively adjusted, and the adjusted embodiment is also capable of adjusting the position and orientation of the guide portion 6 with respect to the foot, except that the position and orientation of the guide portion 6 with respect to the foot are not as diverse as those of the guide portion 6 in the above-described embodiment, and the use range is relatively narrow.
In the above arrangement, the first adjusting assembly 51 includes two cylindrical sliding rails 512 connected to the two supporting arms 511 at the bottom of the foot fixing plate 41 and a sliding block 513 slidably engaged with the cylindrical sliding rails 512, and the second adjusting assembly 52 includes a column (such as a cylinder 521) arranged on the sliding block 513 and a second moving member capable of moving along the axis of the column. Through the arrangement, the pose adjusting part 5 is smaller and more convenient in structure and convenient to install and use.
It will be understood by those skilled in the art that the above arrangement of the first adjusting assembly and the second adjusting assembly is only a preferred arrangement, and in a possible arrangement, the first adjusting assembly may be arranged to adjust the position of the guide portion relative to the foot portion along the thickness direction of the foot portion, and the second adjusting assembly may be arranged to adjust the position of the guide portion relative to the foot portion along the length direction of the foot portion, for example, the first adjusting assembly includes two vertical guide rails fixed to the foot fixing plate 41 near two ends, a vertical slide block is respectively arranged on the two vertical guide rails, a horizontal slide rail is fixedly connected between the two vertical slide blocks, a horizontal slide block is arranged on the horizontal slide rail, and one end of the connecting rod of the third adjusting assembly is pivotally connected with the horizontal slide block. But the structure as a whole is relatively complex. In addition, the guide rail and the first moving member in the first adjusting assembly are not limited to the structures in the above embodiments, for example, the guide rail may be a square slide rail, a dovetail slide rail, or the like, and the second moving member is a slider that is configured to match the shape of the slide rail; in a possible embodiment, the guide rail may be a ball screw pivotally connected to the support arm, and the first moving member is a nut cooperating with the ball screw, the nut being moved in the axial direction of the screw by rotating the ball screw.
The stand in the second adjusting component 52 is a cylinder 521, the second moving component comprises an annular hoop 522 and a cantilever 523 integrally formed with the annular hoop 522, the annular hoop 522 is sleeved on the cylinder 521, so that the annular hoop 522 can move up and down along the axial direction of the cylinder 521, the annular hoop 522 can rotate around the axis of the cylinder 221, the connecting rod 531 is in pivot connection with the cantilever 523, the pivot axes of the two are parallel to the axis of the cylinder 521, the annular hoop 522 can rotate around the axis of the cylinder 521, through the matching of the two pivot structures, the connecting rod 531 and the guide part can translate along the direction perpendicular to the axes of the cylinder 521 and the cylinder slide rail 512 at the same time, the position and the orientation adjusting range of the guide part are improved, and the application range is further expanded.
It will be appreciated by those skilled in the art that the second moving member may comprise only an annular band 522, the annular band 522 being movable up and down only in the axial direction of the cylinder 521, the first end of the link 531 being pivotally connected to the annular band 522, the pivot axis of the link 531 being collinear with the axis of the cylinder 521. When the first moving member is provided to be movable only in the axial direction of the column, the column may be a triangular prism, a quadrangular prism, a hexagonal prism, or the like.
The guide cylinder is fixed to the scale ring 536 through the joint mode, can change the guide cylinder of different specifications to be convenient for guide the guide pin of different specifications. The guide cylinder is only a specific setting mode as the guide part 6, and the technical personnel in the field can adjust the guide cylinder according to the needs, if the guide part can also be a body comprising a cuboid, a through hole is penetrated in the middle of the body or a channel with a section shape of a superior arc is penetrated in the middle of the body.
According to the technical scheme, the foot to be osteotomy can be fixed to the fixing part through the fixing part, the deviation of the osteotomy direction caused by accidental deviation of the foot in the osteotomy operation process is avoided, the guide pin can be guided to be fixed to the foot to be osteotomy according to the required position and orientation through the synergistic effect of the fixing part, the pose adjusting part and the guide part, the accuracy of the guide pin fixing position and orientation is guaranteed, the accurate osteotomy direction is further guaranteed, and the ideal correction effect is achieved.
Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A foot osteotomy auxiliary positioning device is characterized in that the foot osteotomy auxiliary positioning device comprises a fixed part, a pose adjusting part connected with the fixed part and a guide part arranged on the pose adjusting part,
the fixing part is used for fixing a foot to be osteotomy, the posture adjusting part is used for adjusting the position and the orientation of the guide part relative to the foot, and the guide part is used for guiding a guide pin to be fixed to the foot.
2. The auxiliary positioning device for foot osteotomy according to claim 1, wherein said posture adjustment portion includes:
a first adjustment assembly connected to the fixing portion for adjusting a position of the guide portion relative to the foot portion along a length direction of the foot portion;
a second adjustment assembly connected to the first adjustment assembly for adjusting a position of the guide portion relative to the foot portion in a thickness direction of the foot portion;
a third adjustment assembly connected to the second adjustment assembly for adjusting an orientation of the guide.
3. The foot osteotomy assisting positioning device of claim 2, wherein said first adjustment assembly includes a guide rail removably coupled to said fixed portion and a first displacement member cooperatively coupled to said guide rail, said guide rail being located on one side of said fixed portion, said second adjustment assembly being coupled to said first displacement member,
the guide rail is provided with a first scale mark indicating the relative position of the first moving member and the guide rail, the first moving member is provided with a first locking member, and the first locking member is used for locking the first moving member.
4. A foot osteotomy assisting positioning device as defined in claim 3, wherein said second adjustment assembly includes a post provided on said first moving member and a second moving member movable in an axial direction of said post, said third adjustment assembly being connected to said second moving member,
the upright post is provided with a second scale mark indicating the relative position of the second moving member and the upright post, and the second moving member is provided with a second locking member for locking the second moving member.
5. A foot osteotomy assisting positioning device as defined in claim 4 wherein said third adjustment assembly includes a link pivotally connected at a first end thereof to said second translating member by a third locking member, said guide connected to a second end of said link,
the first end of the connecting rod is provided with a third graduation mark for indicating the pivoting angle of the connecting rod, the third locking component is used for locking the connecting rod,
wherein the pivot axis of the link is parallel or collinear with the axis of the upright.
6. A foot osteotomy assisting positioning device as defined in claim 5, wherein said guide portion is pivotally connected to said second end of said link by a fourth locking member, said fourth locking member being sleeved with a scale ring for indicating a pivoting angle of said guide portion, said fourth locking member being for locking said guide portion,
wherein a pivot axis of the guide portion is perpendicular to a pivot axis of the link.
7. The auxiliary positioning device for foot osteotomy according to any one of claims 1-6, wherein said guide portion includes a body having a channel formed thereon for allowing passage of said guide pin therethrough.
8. The auxiliary positioning device for foot osteotomy according to claim 7, wherein a cross-sectional area of the distal end of the passage gradually decreases along a direction of passage of the guide pin.
9. A foot osteotomy assisting positioning device according to any one of claims 1 to 6, wherein said fixing portion includes first and second fixedly connected or integrally formed fixing members for fixing said foot and corresponding leg respectively.
10. A foot osteotomy aid according to any one of claims 3 to 6, wherein said first fixing member defines a plurality of apertures, and said rail is connected to a portion of said apertures by a connecting member.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757979.2A CN111887932A (en) | 2020-07-31 | 2020-07-31 | Auxiliary positioning device for foot osteotomy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757979.2A CN111887932A (en) | 2020-07-31 | 2020-07-31 | Auxiliary positioning device for foot osteotomy |
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| CN111887932A true CN111887932A (en) | 2020-11-06 |
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| CN202010757979.2A Pending CN111887932A (en) | 2020-07-31 | 2020-07-31 | Auxiliary positioning device for foot osteotomy |
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Application publication date: 20201106 |