CN210077795U

CN210077795U - Accurate fixed guider that cuts bone of calcaneus

Info

Publication number: CN210077795U
Application number: CN201822000475.7U
Authority: CN
Inventors: 魏宝富; 伏传升
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-02-18
Anticipated expiration: 2028-11-30

Abstract

The utility model provides an accurate fixed guider that cuts bone of calcaneum, include: the main part is provided with an L-shaped section and comprises a first part and a second part, the skin contact end of the first part is provided with a positioning hole group and a fixing hole group, the positioning hole group consists of a plurality of positioning holes which are distributed at equal intervals, the fixing hole group consists of a plurality of fixing holes, and the fixing holes are distributed in the positioning hole group at equal intervals; the second component is provided with a plurality of side fixing holes which are vertically arranged at the skin contact end of the second component at equal intervals, a first clamping groove and a second clamping groove are arranged at the side end of the second component far away from the first component, and the first clamping groove and the second clamping groove are inserted between the adjacent side fixing holes; the assembly is in a triangular plate shape and comprises a vertical end and an inclined end, the vertical end is connected with the side end, far away from the first part, of the second part, and the vertical end is provided with a clamping piece which is matched and connected with the first clamping groove and the second clamping groove respectively.

Description

Accurate fixed guider that cuts bone of calcaneus

Technical Field

The utility model relates to the technical field of auxiliary instrument, in particular to accurate fixed guider of cutting bone of calcaneus.

Background

The calcaneus is the main negative point of the hindfoot, and plays an important role in maintaining the medial and lateral longitudinal arches of the foot and the stability of the foot function. Any deformity of the calcaneus can cause foot deformity, and patients are easy to fatigue, pain and even difficult to walk, thereby seriously affecting the daily life and work of the patients. The aim of the calcaneus inward shift or eversion osteotomy is to restore the consistency of the axis of the calcaneus and the force line of the lower limb and restore the physiological structure of the device, thereby achieving the purposes of loading and correcting the deformity of the forefoot. Calcaneal osteotomy is commonly used for the correction of stiff flat foot, talipes equinovarus, postoperative abnormal healing of calcaneal fracture, CMT deformity and the like.

Due to the particular anatomical osteotomy of the calcaneal tuberosity, it is important to determine the location and orientation of the osteotomy line correctly, particularly in an eversion or inversion deformity. In the past, the lateral oblique osteotomy line is determined according to experience, and the proximal osteotomy block is often small, so that the aim of calcaneus axis cannot be fulfilled; sometimes even damaging the achilles tendon bursa. If the osteotomy line is close to the joint surface, the operation is difficult, and the sural nerve, the calcaneofibular ligament and the fibular long and short tendons are easily damaged.

Since the calcaneal tuberosity is narrow and the overlapped part after displacement is narrow, the screw fixation is difficult to grasp depending on the experience of an operator, and sometimes the needle threading and the fluoroscopy are needed to be repeated. Repeated needle threading and drilling have large operation trauma, and the loss of bone mass of the osteotomy block is large, thereby influencing the stability of the implanted screw. Meanwhile, the implanted screw position is inaccurate, and the purpose of strong fixation cannot be achieved. Prolonged surgery increases the risk of infection; repeated fluoroscopy increases the radiation of patients and operators, and harms their health.

SUMMERY OF THE UTILITY MODEL

The utility model provides an accurate fixed guider of bone that cuts of calcaneum, convenient to use is effective, goes out the direction of some confirming the staple through control, and the location direction is accurate, avoids repeatedly wearing the needle perspective, reduces the operation wound, reduces the radiation to patient and operation person, practices thrift the operation time, and it includes:

the main part, the main part cross-section is established to L type structure, the main part includes first part and second part, first part one end with second part one end is connected perpendicularly, first part skin contact end is equipped with positioning hole group and fixed punch combination, positioning hole group comprises the locating hole that a plurality of equidistance distributes, locating hole aperture is 2mm, the contained angle between its central line of a plurality of locating hole and the first part skin contact end is 70 °, fixed punch combination comprises a plurality of fixed orifices, and a plurality of fixed orifices equidistance distributes in positioning hole group; the second component is provided with a plurality of side fixing holes which are vertically arranged at the skin contact end of the second component at equal intervals, a first clamping groove and a second clamping groove are arranged at the side end of the second component far away from the first component, and the first clamping groove and the second clamping groove are inserted between the adjacent side fixing holes;

the assembly is in a triangular plate shape and comprises a vertical end and an inclined end, the vertical end is connected with the side end, far away from the first part, of the second part, and the vertical end is provided with a clamping piece which is matched and connected with the first clamping groove and the second clamping groove respectively.

As preferred, the location punch combination is including the left side that sets up side by side apart from hole, center pin hole and the right apart from the hole, center pin hole includes first hole, second hole and the third hole that vertical and equidistance of top-down set up, left side apart from hole and right apart from the hole with center pin hole place straight line is central symmetric distribution, the left side is equipped with three and the vertical equidistance of top-down and distributes apart from the hole, the right side is equipped with three and the vertical equidistance of top-down and distributes apart from the hole to form 3 a 3 positioning punch combination.

Preferably, the fixed hole group comprises a first fixed hole, a second fixed hole, a third fixed hole and a fourth fixed hole, the first fixed hole and the second fixed hole are vertically arranged between the left side distance hole and the central axis hole, the third fixed hole and the fourth fixed hole are vertically arranged between the right side distance hole and the central axis hole, and a straight line where the first fixed hole and the second fixed hole are located and a straight line where the third fixed hole and the fourth fixed hole are located are centrally and symmetrically distributed with the straight line where the central axis hole is located.

Preferably, the included angles between the vertical end and the inclined end are 10 degrees, 20 degrees and 30 degrees, and the assembly is divided into 3 different specifications according to the difference of the included angles.

Preferably, the number of the side fixing holes is 3, the side fixing holes are a first side fixing hole, a second side fixing hole and a third side fixing hole, the first clamping groove is inserted between the first side fixing hole and the second side fixing hole, and the second clamping groove is inserted between the second side fixing hole and the third side fixing hole.

Preferably, the inclined end is connected with an angle-adjustable plate, one end of the angle-adjustable plate is hinged with one end of the inclined end close to the vertical end, an angle-adjustable device is connected between the inclined end and the angle-adjustable plate, the angle-adjustable device comprises a fixed base, the fixed base is embedded in the assembly, the upper end of the fixed base and the inclined end are arranged in a coplanar manner, the upper end of the fixed base is provided with a guide groove, a transmission screw rod is arranged in the guide groove, one end of the transmission screw rod is rotatably connected in the fixed base, the other end of the transmission screw rod penetrates out from the other vertical end of the assembly, the other end of the transmission screw rod is connected with a rotating nut, a transmission block is arranged in the guide groove and slides at the bottom of the guide groove, and the height of one end, away from the bottom of the guide groove, of the transmission block is lower than, the one end that the guiding way tank bottom was kept away from to the transmission piece articulates there is the dwang, dwang one end articulate in the one end that the guiding way tank bottom was kept away from to the transmission piece, the dwang other end articulate in the one end that the angle-adjustable board is close to the tip.

As preferred, the one end that the guiding groove tank bottom was kept away from to the transmission piece transversely is equipped with the recess, its one end that is close to the transmission piece of dwang through the pivot connect in the recess, in order to guarantee to work as the adjustable board of angle with when the tip is parallel, the dwang is arranged in the guiding groove.

Preferably, one end of the rotating rod, which is close to the angle-adjustable plate, is hinged to one end of the angle-adjustable plate, which is close to the inclined end, and is arranged away from the vertical end.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an axonometric view of a calcaneus precise osteotomy fixation guide in an embodiment of the invention;

fig. 2 is a top view of a calcaneus precise osteotomy fixation guide in an embodiment of the present invention;

FIG. 3 is a front view of a main part of a guiding device for accurate calcaneus osteotomy fixation according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a central axial hole of a calcaneus precise osteotomy fixation guide in an embodiment of the present invention;

FIG. 5 is an elevation view of a second component of a calcaneus precision osteotomy fixation guide of an embodiment of the present invention;

FIG. 6 is a side view of a second component of an accurate calcaneus osteotomy fixation guide of an embodiment of the present invention;

FIG. 7 is a front view of the components of a calcaneus precision osteotomy fixation guide of an embodiment of the present invention;

FIG. 8 is an isometric view of the components of an accurate calcaneus osteotomy fixation guide of an embodiment of the present invention;

fig. 9 is a schematic structural view of an angle adjustable device in the guiding device for accurately cutting calcaneus according to the embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-8, the embodiment of the utility model provides a fixed guider of accurate osteotomy of calcaneus, include:

the main part 1, the cross-section of the main part 1 is designed to be an L-shaped structure, the main part 1 comprises a first part 1-1 and a second part 1-2, one end of the first part 1-1 is vertically connected with one end of the second part 1-2, a positioning hole group and a fixing hole group are arranged at the skin contact end of the first part 1-1, the positioning hole group comprises a plurality of positioning holes which are distributed at equal intervals, the aperture of each positioning hole is 2mm, an included angle between the central line of each positioning hole and the skin contact end of the first part 1-1 is 70 degrees, each fixing hole group comprises a plurality of fixing holes, and the fixing holes are distributed in the positioning hole group at equal intervals; a plurality of side fixing holes are vertically distributed on the skin contact end of the second component 1-2 at equal intervals, a first clamping groove 22 and a second clamping groove 24 are formed in the side end, far away from the first component 1-1, of the second component 1-2, and the first clamping groove 22 and the second clamping groove 24 are inserted between the adjacent side fixing holes;

the assembly 3 is in a triangular plate shape, the assembly 3 comprises a vertical end 35 and an inclined end 34, the vertical end 35 is connected with the side end, away from the first part 1-1, of the second part 1-2, and the vertical end 35 is provided with a clamping piece which is matched and connected with the first clamping groove 22 and the second clamping groove 24 respectively.

The working principle and the beneficial effects of the technical scheme are as follows: the accurate fixed guider that cuts bone of calcaneum wholly is the L type, and it is including main part 1 and subassembly 3 two parts. Taking the example of the medial calcaneus osteotomy, the patient is in the horizontal or lateral position, and the central point and the two lateral boundary lines of the tuberosity of the calcaneus are firstly determined. Buckling the skin contact end of the main part 1 at the rear part and the outer side part of a calcaneal tubercle, enabling partial positioning holes to coincide with the central point of the calcaneal tubercle, keeping the skin contact end of the main part 1 to be tightly attached to the calcaneal tubercle, enabling an included angle between the central line of the positioning holes and the skin contact end of the first part 1-1 to be 70 degrees and consistent with a Pitch angle of the calcaneus, implanting a 2.0mm Kirschner wire into the positioning holes, implanting the depth of 2cm, determining the Kirschner wire to be located in the central axis of the calcaneus in a perspective manner, implanting the 2.0mm Kirschner wire into a side fixing hole, limiting and self-locking the component 3 with a first clamping groove 22 and a second clamping groove 24 arranged on the vertical end 35 through a clamping piece, so as to ensure the connection between the component 3 and the main part 1, determining the position and the direction of a osteotomy line in a perspective manner, marking a skin incision line, the calcaneus guide pin is tightly attached to the bone surface, the skin and surrounding soft tissues are protected, the saw is swung to cut the calcaneus along the direction of the inclined end 34, the inner cortex is cut by the osteotome, the soft tissues of the inner side wall are loosened, the calcaneus tubercle and the fixing guide device are displaced towards the inner side/the outer side, the calcaneus axis is restored according to the deformation degree and the calcaneus width by 1-2cm, the guide pin is implanted through the fixing hole, the C arm perspective calcaneus axis is restored, the guide pin is good in position, and the guide pin can be fixed by replacing a hollow screw. Use the accurate fixed guider of osteotomy of calcaneum marks clearly, convenient operation, after confirming calcaneum the central axis, installation component 3 confirms the position and the direction of osteotomy line on main part 1. After the bone is cut and the axis is restored by displacement, a fixing screw can be accurately implanted through the fixing hole without repeatedly threading and fluoroscopy, thereby reducing the operation wound, being beneficial to the healing of the cut bone end, shortening the operation time, reducing the radiation exposure and being beneficial to the restoration of the function of a patient.

As shown in fig. 3, in one embodiment, the positioning hole group includes left side distance holes 1-11, center axis holes 1-12, and right side distance holes 1-13 arranged in parallel, the center axis holes 1-12 include first holes 13, second holes 14, and third holes 15 arranged vertically and equidistantly from top to bottom, the left side distance holes 1-11 and the right side distance holes 1-13 are symmetrically distributed with respect to the straight line where the center axis holes 1-12 are located, the left side distance holes 1-11 are provided with three and vertically and equidistantly distributed from top to bottom, and the right side distance holes 1-13 are provided with three and vertically and equidistantly distributed from top to bottom, so as to form a positioning hole group of 3 × 3.

The working principle and the beneficial effects of the technical scheme are as follows: 1 Kirschner wire with 2.0mm is implanted through the second hole 14, and 2.0mm Kirschner wires are respectively implanted through the first hole 13 and the third hole 15 so as to be convenient to position, and at the moment, the Kirschner wires implanted into the third hole 15 need to be retreated, and the reserved depth is about 2 cm.

In one embodiment, the fixing hole group includes a first fixing hole 11, a second fixing hole 12, a third fixing hole 16 and a fourth fixing hole 17, the first fixing hole 11 and the second fixing hole 12 are vertically arranged between the left side distance holes 1-11 and the central axis hole 1-12, the third fixing hole 16 and the fourth fixing hole 17 are vertically arranged between the right side distance holes 1-13 and the central axis hole 1-12, and a straight line where the first fixing hole 11 and the second fixing hole 12 are located and a straight line where the third fixing hole 16 and the fourth fixing hole 17 are located are symmetrically distributed with a straight line where the central axis hole 1-12 is located as a center.

The working principle and the beneficial effects of the technical scheme are as follows: the fixing hole group is provided with a plurality of fixing holes so as to align the central axis of the calcaneus.

In one embodiment, the vertical end 35 is angled at 10 °, 20 ° and 30 ° to the angled end 34, and the assembly 3 is divided into 3 different sizes depending on the angle.

The working principle and the beneficial effects of the technical scheme are as follows: the assembly 3 is divided into 3 different specifications by the different included angles of the vertical end 35 and the inclined end 34, and the inclined end 34 is ensured to be perpendicular to the calcaneus axis.

As shown in fig. 5, in one embodiment, there are 3 side fixing holes, which are a first side fixing hole 21, a second side fixing hole 23 and a third side fixing hole 25, respectively, the first engaging groove 22 is inserted between the first side fixing hole 21 and the second side fixing hole 23, and the second engaging groove 24 is inserted between the second side fixing hole 23 and the third side fixing hole 25.

The beneficial effects of the above technical scheme are: 2.0mm kirschner wires are respectively implanted into the first lateral fixing hole 21 and the third lateral fixing hole 25, so that the main part 1 is beneficial to clear mark and convenient to position.

As shown in fig. 9, as an alternative embodiment, the present application improves the structure of the assembly 3, and specifically includes: the inclined end 34 is connected with an angle adjustable plate 4-1, one end of the angle adjustable plate 4-1 is hinged with one end of the inclined end 34 close to a vertical end 35, an angle adjustable device 4 is connected between the inclined end 34 and the angle adjustable plate 4-1, the angle adjustable device 4 comprises a fixed base 4-2, the fixed base 4-2 is embedded in the component 3, the upper end of the fixed base 4-2 and the inclined end 34 are arranged in a coplanar manner, the upper end of the fixed base 4-2 is provided with a guide groove 4-3, a transmission screw rod 4-4 is arranged in the guide groove 4-3, one end of the transmission screw rod is rotatably connected in the fixed base 4-2, the other end of the transmission screw rod 4-4 penetrates out from the other vertical end of the component 3, and the other end of the transmission screw rod 4-4 is connected with a rotating nut 4-5, the transmission block 4-6 is arranged in the guide groove 4-3 and slides at the bottom of the guide groove 4-3, the transmission block 4-6 is far away from the upper part of the guide groove 4-3, the height of one end of the bottom of the guide groove 4-3 is lower than that of the notch of the guide groove 4-3, one end of the transmission block 4-6 far away from the bottom of the guide groove 4-3 is hinged with a rotating rod 4-7, one end of the rotating rod 4-7 is hinged at one end of the transmission block 4-6 far away from the bottom of the guide groove, and the other end of the rotating rod 4-7 is hinged at one end of the angle adjustable plate 4-1 close to the inclined.

The working principle and the beneficial effects of the technical scheme are as follows: the rotating nut 4-5 is rotated, the transmission block 4-6 arranged in the guide groove 4-3 is driven by the transmission screw rod 4-4, moving in the guide groove 4-3, when the transmission block 4-6 moves away from the end of the rotating nut 4-5 in the guide groove 4-3, a rotating rod 4-7 hinged with the transmission block 4-6 supports the angle adjustable plate 4-1 to rotate by taking the hinged end as the center, therefore, the angle between the angle adjustable plate 4-1 and the inclined end 34 can be adjusted, medical staff can conveniently find the vertical position relation between the angle adjustable plate 4-1 and the calcaneus axis by taking the angle adjustable plate 4-1 as the osteotomy surface, and the osteotomy surface is ensured to be vertical to the calcaneus axis.

In one embodiment, a groove 4-61 is transversely formed at one end of the transmission block 4-6 far away from the bottom of the guide groove 4-3, and one end of the rotating rod 4-7 close to the transmission block 4-6 is connected in the groove 4-61 through a rotating shaft, so that the rotating rod 4-7 is arranged in the guide groove 4-3 when the angle adjustable plate 4-1 is parallel to the inclined end 34.

The working principle and the beneficial effects of the technical scheme are as follows: when the transmission block 4-6 moves towards the end close to the rotating nut 4-5 in the guide groove 4-3, one end of the rotating rod 4-7 close to the transmission block 4-6 is connected in the groove 4-61 through a rotating shaft, so that the rotating rod 4-7 is conveniently retracted into the guide groove 4-3.

In one embodiment, the rotating lever 4-7 is hinged at one end thereof adjacent to the angle-adjustable plate 4-1 to one end thereof adjacent to the inclined end 34 and is disposed away from the vertical end 35.

The working principle and the beneficial effects of the technical scheme are as follows: by hinging the end of the rotating rod 4-7 close to the angle adjustable plate 4-1 to the end of the angle adjustable plate 4-1 close to the inclined end 34 and away from the vertical end 35, the transmission block 4-6 can be displaced a small distance to achieve the effect of maximally adjusting the angle range of the angle adjustable plate 4-1.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a fixed guider of accurate osteotomy of calcaneus which characterized in that includes:

the main part (1), the cross-section of the main part (1) is designed to be an L-shaped structure, the main part (1) comprises a first part (1-1) and a second part (1-2), one end of the first part (1-1) is perpendicularly connected with one end of the second part (1-2), a positioning hole group and a fixing hole group are arranged at the skin contact end of the first part (1-1), the positioning hole group consists of a plurality of positioning holes which are distributed at equal intervals, the aperture of each positioning hole is 2mm, an included angle between the central line of each positioning hole and the skin contact end of the first part (1-1) is 70 degrees, each fixing hole group consists of a plurality of fixing holes, and the plurality of fixing holes are distributed in the positioning hole group at equal intervals; a plurality of lateral fixing holes are vertically distributed in the skin contact end of the second component (1-2) at equal intervals, a first clamping groove (22) and a second clamping groove (24) are formed in the side end, far away from the first component (1-1), of the second component (1-2), and the first clamping groove (22) and the second clamping groove (24) are inserted between the adjacent lateral fixing holes;

the assembly (3), the assembly (3) is set to be triangular plate-shaped, the assembly (3) comprises a vertical end (35) and an inclined end (34), the vertical end (35) is connected with the second part (1-2) at the side end far away from the first part (1-1), and the vertical end (35) is provided with a clamping piece which is matched and connected with the first clamping groove (22) and the second clamping groove (24) respectively.

2. The accurate osteotomy fixation guide device of calcaneus according to claim 1, wherein the positioning hole group comprises left side distance holes (1-11), center axis holes (1-12) and right side distance holes (1-13) which are arranged in parallel, the center axis holes (1-12) comprise first holes (13), second holes (14) and third holes (15) which are vertically arranged from top to bottom and equidistantly arranged, the left side distance holes (1-11) and the right side distance holes (1-13) are symmetrically distributed by taking a straight line of the center axis holes (1-12) as a center, the left side distance holes (1-11) are vertically distributed from three to top, the right side distance holes (1-13) are vertically distributed by equidistantly arranged from three to top to form a positioning hole group of 3 x 3.

3. The calcaneus accurate osteotomy fixation guide of claim 2, wherein the set of fixation holes includes a first fixation hole (11), a second fixation hole (12), a third fixation hole (16), and a fourth fixation hole (17), the first fixing hole (11) and the second fixing hole (12) are vertically arranged between the left margin hole (1-11) and the central axis hole (1-12), the third fixing hole (16) and the fourth fixing hole (17) are vertically arranged between the right margin hole (1-13) and the central axis hole (1-12), the straight line where the first fixing hole (11) and the second fixing hole (12) are located and the straight line where the third fixing hole (16) and the fourth fixing hole (17) are located are symmetrically distributed by taking the straight line where the central axis hole (1-12) is located as a center.

4. A fixation guide for accurate osteotomy of the calcaneus according to claim 1, wherein said vertical end (35) is angled from said inclined end (34) by 10 °, 20 ° and 30 ° and said assembly (3) is divided into 3 different sizes according to the angle.

5. The accurate osteotomy fixation guide of the calcaneus according to claim 1, wherein there are 3 lateral fixation holes, respectively a first lateral fixation hole (21), a second lateral fixation hole (23), and a third lateral fixation hole (25), the first slot (22) is inserted between the first lateral fixation hole (21) and the second lateral fixation hole (23), and the second slot (24) is inserted between the second lateral fixation hole (23) and the third lateral fixation hole (25).