Calcaneus osteotomy positioner

Abstract

The utility model relates to the technical field of orthopedic medical instruments, in particular to a calcaneus osteotomy positioner which comprises a radian adjusting piece. The radian adjusting part comprises a rotating screw rod, a first guide rod, a second guide rod and a fixing part, the first guide rod and the second guide rod are both connected with the rotating screw rod, the first guide rod and the second guide rod are symmetrically arranged on the two sides of the rotating screw rod, the first guide rod is connected with the second guide rod through a telescopic rod, and the first guide rod and the second guide rod are both connected with the fixing part; the rotary screw rod is connected with the fixed part through the telescopic rod, the fixed part is bent towards the direction close to the rotary screw rod, and the surface of the fixed part is provided with a radian ruler, so that the problem of low precision caused by displacement through a manual technology can be avoided, the flexibility and the universality of the position adjuster during use can be improved, and the difficulty of an operation can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic medical instruments, in particular to a calcaneal osteotomy positioner. Background Art

[0002] In calcaneal osteotomy surgery, a part of the patient's heel bone needs to be cut out, and then the cut part is displaced and corrected before being fixed with nails. The calcaneal displacement method generally relies on the doctor to directly displace the cut calcaneal part by hand. The doctor's direct hand-supported displacement may be affected by human factors, such as hand stability, operating experience, etc. Hand-supported displacement requires the doctor to exert appropriate force, but excessive force may damage surrounding tissues and blood vessels, and too little force may not achieve the ideal displacement effect. In this process, the doctor's experience and technique are tested, and the operating skills and experience of different doctors may differ, which may lead to inconsistent treatment results for patients with the same condition, affecting the treatment effect, thereby making the entire operation more difficult.

[0003] In the prior art, there are some calcaneal osteotomy positioners, which can position the heel by moving the fixing column forward and backward to make the positioning column contact the side of the heel. However, the positioner cannot adjust the curvature of the heel, which makes it difficult to fix the positioner to the heel, resulting in inaccurate osteotomy line drawing. It cannot be applied to the feet of patients with different body shapes, and its versatility is low. Therefore, there is an urgent need for a medical device that can assist in calcaneal osteotomy surgery to reduce the difficulty of the surgery. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a calcaneal osteotomy positioner, which can not only avoid the problem of low precision caused by artificial displacement, but also improve the flexibility and versatility of the positioner when used, and reduce the difficulty of surgery.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A calcaneal osteotomy positioner, comprising a curvature adjustment member;

[0007] The curvature adjustment member includes a rotating screw, a first guide rod, a second guide rod and a fixed portion, the first guide rod and the second guide rod are both connected to the rotating screw, the first guide rod and the second guide rod are symmetrically arranged on both sides of the rotating screw, the first guide rod is connected to the second guide rod through a telescopic rod, the first guide rod and the second guide rod are both connected to the fixed portion, the rotating screw is connected to the fixed portion through the telescopic rod, the fixed portion is bent in a direction close to the rotating screw, and a curvature ruler is provided on the surface of the fixed portion.

[0008] Preferably, it further includes a positioning member, which includes a positioning rod and a plurality of positioning holes, the positioning hole is detachably connected to a limiting sleeve, the aperture of the limiting sleeve is smaller than the aperture of the positioning hole, one end of the positioning rod is bent to form a positioning portion, and the positioning member is movably connected to the second guide rod through the positioning rod.

[0009] Preferably, an adjusting member is further included, wherein the adjusting member includes an adjusting rod and an adjusting hole, the adjusting rod is movably connected to the first guide rod, and the adjusting hole is rotatably connected to the adjusting sleeve.

[0010] Preferably, it further comprises a fixing part, which comprises a fixing column, on which a scale value is arranged, the fixing column is threadedly connected to the adjusting sleeve, and the fixing part is connected to the curvature adjusting member via the adjusting rod.

[0011] Preferably, a locking piece is further included, which includes a fixing nut and a connecting hole. The fixing nut passes through the connecting hole and is arranged at the connection between the adjusting rod and the first guide rod. The fixing nut passes through the connecting hole and is arranged at the connection between the positioning rod and the second guide rod.

[0012] Preferably, a limiting groove is provided on the outer side of the fixing column, the limiting groove extends along the direction of the fixing column, the inner side of the adjustment hole is connected to a limiting block, the limiting block is connected to the limiting groove, and the surface of the limiting groove is provided with the scale value.

[0013] Preferably, an auxiliary component is further included, which includes a sliding block, an auxiliary line drawing guide and a limit strip, an upper card slot is provided on one side of the sliding block, a lower card slot is provided on one side of the auxiliary line drawing guide, the upper card slot and the lower card slot are respectively connected to the adjusting rod, and the auxiliary line drawing guide is connected to the limit strip.

[0014] Preferably, the auxiliary component also includes a cutting block, the cutting block includes an auxiliary cutting guide, one side of the auxiliary cutting guide is provided with a mounting groove, the adjusting rod is engaged with the mounting groove on the side away from the sliding block, the auxiliary cutting guide and the auxiliary drawing guide are detachably connected to the sliding block, and the cutting block is provided with a cutting through hole.

[0015] Preferably, the sliding block is threadedly connected to the positioning column, and the positioning column abuts against the adjusting rod.

[0016] Preferably, the fixing portion is provided with a plurality of fixing holes, and the adjusting rod is provided with a graduated titanium plate.

[0017] The beneficial effects of the utility model are:

[0018] 1. The utility model comprises an arc adjustment member, wherein the arc adjustment member comprises a rotating screw, a first guide rod, a second guide rod and a fixing portion, wherein the first guide rod and the second guide rod are both threadedly connected to the rotating screw, the first guide rod and the second guide rod are symmetrically arranged on both sides of the rotating screw, the first guide rod and the second guide rod are both connected to the fixing portion, the rotating screw is connected to the fixing portion through a telescopic rod, and an arc ruler is arranged on the surface of the fixing portion, and the transmission action of the rotating screw and the first guide rod and the second guide rod causes the fixing portion connected to the first guide rod and the second guide rod to be deformed to a certain extent. Through the deformable fixing portion, the present application can be applied to the feet of patients with different body shapes, and the arc ruler arranged on the surface of the fixing portion can display the deformation degree of the fixing portion and timely adjust the arc of the positioner to ensure that it perfectly matches the patient's bone structure or a preset osteotomy line, such precise matching helps to reduce positioning errors, thereby improving the accuracy and reliability of osteotomy surgery and reducing the difficulty of surgery.

[0019] 2. The radian adjustment piece can flexibly adapt to various bone morphologies and meet the osteotomy needs of different patients, making the surgery more personalized and precise. Through the radian adjustment piece, doctors can more conveniently adjust the angle and position of the osteotomy tool without frequently changing or adjusting different instruments. This simplifies the surgical operation, shortens the operation time, and reduces the risk of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram of the radian adjustment structure in a specific embodiment of the utility model;

[0021] Figure 2 This is a structural diagram of a position adjuster in a specific embodiment of the utility model;

[0022] Figure 3 This is a structural diagram of the cutting part in a specific embodiment of the utility model;

[0023] Figure 4 It is a top view of the positioner in a specific embodiment of the utility model.

[0024] Explanation of the accompanying drawings: 100, fixing part; 110, fixing hole; 120, fixing column; 121, limiting groove; 210, positioning rod; 211, limiting sleeve; 212, positioning part; 220, adjusting sleeve; 230, adjusting rod; 240, arc adjustment member; 250, locking member; 310, sliding block; 311, upper slot; 320, connecting block; 330, limiting strip; 340, cutting block; 341, mounting groove; 342, cutting hole; 350, positioning column; 410, rotating screw; 420, first guide rod; 430, second guide rod; 440, fixing part; 450, telescopic rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 As shown, the utility model relates to a calcaneal osteotomy positioner.

[0027] Example 1

[0028] A calcaneal osteotomy positioner, comprising a curvature adjustment member;

[0029] The curvature adjustment member includes a rotating screw 410, a first guide rod 420, a second guide rod 430 and a fixed portion 440. The first guide rod 420 and the second guide rod 430 are both connected to the rotating screw 410. The first guide rod 420 and the second guide rod 430 are symmetrically arranged on both sides of the rotating screw 410. The first guide rod 420 and the second guide rod 430 are both connected to the fixed portion 440. The rotating screw 410 is connected to the fixed portion 440 through a telescopic rod 450. The fixed portion 440 is bent in a direction close to the rotating screw 410, and a curvature ruler is provided on the surface of the fixed portion 440.

[0030] As a further improvement of the above technical solution, it also includes a positioning member, which includes a positioning rod 210 and a plurality of positioning holes. The positioning hole is detachably connected to a limiting sleeve 211. The aperture of the limiting sleeve 211 is smaller than the aperture of the positioning hole. One end of the positioning rod 210 is bent to form a positioning portion 212. The positioning member is movably connected to the second guide rod 430 through the positioning rod 210.

[0031] A limiting sleeve 211 can be detachably connected to each of the plurality of positioning holes. The aperture of the limiting sleeve 211 is smaller than that of the positioning hole. The limiting sleeve 211 can be equipped with sleeves of different apertures and different angles. When it is necessary to fix the positioning hole by nailing, the limiting sleeve 211 can be first inserted into the positioning hole, and the space in the limiting sleeve 211 can be used to limit the nailing position to improve the accuracy of nailing and fixation. After the calcaneus is adjusted, the nail in the limiting sleeve 211 is removed from the calcaneus, and the limiting sleeve 211 is also removed from the positioning hole. Then, an external positioning member with a larger outer diameter can be driven into the positioning hole to tightly fix the severed bone and the calcaneus to each other.

[0032] As a further improvement of the above technical solution, it also includes a fixing part 100 and an adjusting member;

[0033] The fixing part 100 includes a fixing column 120 , and a scale value is arranged on the fixing column 120 . The fixing part 100 is connected to the curvature adjusting member through the adjusting rod 230 .

[0034] When the fixing part 100 and the positioning part 212 are positioned at the foot of the patient, the depth of the left end of the positioning rod 210 inserted into the adjustment hole is adjusted to adjust the distance between the fixing part 100 and the positioning part 212. In this way, the fixing part 100 and the positioning part 212 can be installed and fixed on the feet of patients of different body shapes, thereby improving the overall flexibility and versatility during use.

[0035] The adjusting member includes an adjusting hole, the adjusting hole is rotatably connected to the adjusting sleeve 220 , and the adjusting sleeve 220 is threadedly connected to the fixing column 120 .

[0036] The adjusting member is rotatably connected to an adjusting sleeve 220 at a position behind the adjusting hole, and the adjusting sleeve 220 is threadedly connected to the fixing column 120. When the adjusting member needs to be adjusted forward and backward, the medical staff can hold the cut bone with their hands to keep the cut bone against the cut surface of the foot, and then rotate the adjusting sleeve 220 forward or backward. By changing the threaded connection position of the adjusting sleeve 220 on the fixing column 120, the cut bone can be driven forward or backward by the adjusting member. After the adjustment is completed, the position of the adjusting member can be limited by the threaded self-locking of the adjusting sleeve 220 and the fixing column 120, so that the adjusting sleeve 220 can be accurately moved and adjusted.

[0037] A limiting groove 121 is arranged on the outer side of the fixing column 120 , and the limiting groove 121 extends along the direction of the fixing column 120 . A limiting block is connected to the inner side of the adjustment hole, and the limiting block is connected to the limiting groove 121 . The surface of the limiting groove 121 is provided with the scale value.

[0038] The limit block cooperates with the limit groove 121 on the outside of the fixed column 120, so that the adjustment piece forms a sliding limit on the fixed column 120. When the adjustment sleeve 220 needs to be rotated, the limit block limits the adjustment sleeve 220 in the limit groove 121 to drive the fixed column 120 to rotate. At this time, the medical staff does not need to hold the broken bone by hand, but can directly rotate the adjustment sleeve 220, thereby improving the convenience and efficiency of the overall operation and adjustment.

[0039] As a further improvement of the above technical solution, the adjusting member includes an adjusting rod 230 , the adjusting hole is arranged on the left side of the adjusting rod 230 , the adjusting rod 230 is movably connected to the first guide rod 420 , and a graduated titanium plate is provided on the adjusting rod 230 .

[0040] As a further improvement of the above technical solution, it also includes a locking piece 250, which includes a fixing nut and a connecting hole. The fixing nut passes through the connecting hole and is arranged at the connection between the adjusting rod 230 and the first guide rod 420. The fixing nut passes through the connecting hole and is arranged at the connection between the positioning rod 210 and the second guide rod 430.

[0041] When positioning, the relative displacement between the adjusting rod 230 and the first guide rod 420, the relative displacement between the positioning rod 210 and the second guide rod 430 can be used for positioning, and the locking member 250 can press the positioning rod 210 against the connecting hole. Before adjusting the distance between the fixing portion 100 and the positioning portion 212, the nut on the adjusting rod 230 can be loosened first, so that the relative displacement between the adjusting rod 230 and the first guide rod 420 or the relative displacement between the positioning rod 210 and the second guide rod 430 can be used for positioning. After positioning, the locking member 250 can be tightened again with the nut, so that the locking member 250 presses the adjusting rod 230 and the positioning rod 210 against the connecting hole, thereby further tightening the adjusting rod 230 and the positioning rod 210.

[0042] As a further improvement of the above technical solution, it also includes an auxiliary component, which includes a sliding block, an auxiliary line drawing guide and a limit strip 330. An upper card slot 311 is provided on one side of the sliding block, and a lower card slot is provided on one side of the auxiliary line drawing guide. The upper card slot 311 and the lower card slot are respectively connected to the adjusting rod 230, and the auxiliary line drawing guide is connected to the limit strip 330.

[0043] The limiting strips 330 are provided with two intervals along the left-right direction on the front side of the auxiliary drawing guide. After the fixing part 100 and the positioning part 212 are fixed, the auxiliary components can be used to assist in drawing the osteotomy line. Specifically, the sliding block 310 and the auxiliary drawing guide are connected to each other to form a whole relatively fixed on the adjusting rod 230. The limiting strips 330 are provided with drawing gaps along the left-right direction on the front side of the adjusting rod 230. The osteotomy line can be accurately drawn within the drawing gaps, thereby improving the efficiency of the calcaneal osteotomy surgery and making the overall operation more convenient and quick.

[0044] As a further improvement of the above technical solution, the auxiliary component includes a cutting block 340, the cutting block 340 includes an auxiliary cutting guide, one side of the auxiliary cutting guide is provided with a mounting groove 341, the adjusting rod 230 is engaged with the mounting groove 341 on the side away from the sliding block, the auxiliary cutting guide and the auxiliary drawing guide are detachably connected to the sliding block, and the cutting block 340 is provided with a cutting through hole.

[0045] A mounting groove 341 is provided on one side of the auxiliary cutting guide plate, and the lower side of the adjusting rod 230 is inserted into the mounting groove 341. The cutting block 340 or the auxiliary line drawing guide plate is detachably connected to the sliding block 310, and a cutting hole 342 is provided on the cutting block 340. After the osteotomy line is drawn, the connecting block 320 can be removed from the sliding block 310, and then the lower side of the adjusting rod 230 and the mounting groove 341 on the top side of the cutting block 340 are matched and connected to each other, so that the cutting block 340 and the sliding block 310 are relatively fixed to the adjusting rod 230. At this time, the calcaneal osteotomy operation can be performed through the cutting hole 342 on the cutting block 340. The stability and accuracy of the osteotomy operation can be improved by limiting the cutting hole 342, thereby improving the effect of the calcaneal osteotomy operation.

[0046] As a further improvement of the above technical solution, the rear side of the sliding block 310 is connected with a positioning column 350 through a thread, and the front end of the positioning column 350 abuts against the adjusting rod 230. Before adjusting the sliding block 310, the positioning column 350 can be loosened first, so that the front end of the positioning column 350 is away from the adjusting rod 230, and then the position of the sliding block 310 on the adjusting rod 230 can be adjusted according to the position of the required osteotomy, so that the line drawing gap is located at the position where the osteotomy line is required to be drawn, and finally the positioning column 350 is tightened to further fasten the sliding block 310 to the adjusting rod 230.

[0047] Example 2

[0048] Based on the above-mentioned Example 1, the design principle of the present application can be derived: when performing a calcaneal osteotomy operation, nails are driven into the multiple fixing holes 110 of the fixing part 100 to one side of the foot, so that the fixing part 100 is relatively fixed to the bone of the foot, and the curvature adjustment part is used to drive the guide rod to move by rotating the rotating screw 410, so that the angle between the first guide rod 420 and the second guide rod 430 is changed. The first guide rod 420 and the second guide rod 430 are connected to the fixing part 440, thereby changing the curvature of the fixing part 440, and the curvature value can be read intuitively and accurately through the curvature ruler on the fixing part 440.

[0049] Similarly, nails are driven into the multiple positioning holes of the positioning part 212 onto the calcaneal bone of the foot so that the positioning part 212 is relatively fixed to the calcaneal bone that needs to be cut off, and then an osteotomy line is drawn on the foot, and the osteotomy operation is performed along the osteotomy line. After the osteotomy is completed, the adjustment member is moved back and forth along the fixing column 120, and the adjustment member drives the cut bone to move back and forth. At this time, the movement distance of the cut bone can be intuitively known according to the scale value on the fixing column 120, so that the cut bone can be adjusted into place conveniently and accurately. After the adjustment of the cut bone is completed, the nails fixed in the positioning holes are replaced one by one with external positioning members for fixing the cut bone, and finally the nails in the fixing holes 110 are removed to complete the calcaneal osteotomy operation. In this way, the cut bone can be conveniently moved, adjusted and positioned using this calcaneal osteotomy positioner, which reduces the difficulty of the operation and improves the operation accuracy and efficiency of the entire operation.

[0050] Bone osteotomy and inward or outward displacement are the main surgical procedures for the correction of hindfoot valgus and valgus deformity while preserving the subtalar joint. The direction of osteotomy during surgery, the accuracy of inward or outward displacement after osteotomy, and the direction and stability of the screw after displacement mainly rely on the surgeon's experience and intraoperative feel, which often cannot achieve accurate correction and have poor surgical repeatability. The calcaneal osteotomy positioner can measure and calculate the degree of displacement of the calcaneal osteotomy through preoperative imaging data, and achieve minimally invasive calcaneal osteotomy through in vitro positioning of the precise osteotomy line. The positioner can achieve the precise inward or outward displacement degree and arc bending value of the fixed column 120 degrees. After the calcaneus is moved into place, the hindfoot fixed titanium plate channel on the positioner can be used to achieve effective and precise screw fixation after osteotomy.

[0051] The curvature of the osteotomy tool can be precisely adjusted through the curvature adjustment piece to ensure that it perfectly matches the patient's bone structure or the preset osteotomy line. This precise match helps to reduce positioning errors, thereby improving the accuracy and reliability of osteotomy surgery and reducing the difficulty of surgery.

[0052] The arc adjustment piece can flexibly adapt to various bone morphologies and meet the osteotomy needs of different patients, making the surgery more personalized and precise. The arc adjustment piece allows doctors to more conveniently adjust the angle and position of osteotomy tools without frequently replacing or adjusting different instruments. This simplifies surgical operations, shortens surgical time, and reduces surgical risks.

[0053] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A calcaneal osteotomy positioner, characterized in that: Includes arc adjustment piece; The curvature adjustment member includes a rotating screw, a first guide rod, a second guide rod and a fixed portion, the first guide rod and the second guide rod are both connected to the rotating screw, the first guide rod and the second guide rod are symmetrically arranged on both sides of the rotating screw, the first guide rod is connected to the second guide rod through a telescopic rod, the first guide rod and the second guide rod are both connected to the fixed portion, the rotating screw is connected to the fixed portion through the telescopic rod, the fixed portion is bent in a direction close to the rotating screw, and a curvature ruler is provided on the surface of the fixed portion.

2. The calcaneal osteotomy positioner according to claim 1, characterized in that: It also includes a positioning member, which includes a positioning rod and a plurality of positioning holes. The positioning hole is detachably connected to a limiting sleeve, the aperture of the limiting sleeve is smaller than the aperture of the positioning hole, one end of the positioning rod is bent to form a positioning portion, and the positioning member is movably connected to the second guide rod through the positioning rod.

3. The calcaneal osteotomy positioner according to claim 2, characterized in that: It also includes an adjusting piece, which includes an adjusting rod and an adjusting hole. The adjusting rod is movably connected to the first guide rod, and the adjusting hole is rotatably connected to the adjusting sleeve.

4. The calcaneal osteotomy positioner according to claim 3, characterized in that: It also includes a fixing part, which includes a fixing column, on which a scale value is arranged, the fixing column is threadedly connected to the adjusting sleeve, and the fixing part is connected to the curvature adjusting member through the adjusting rod.

5. The calcaneal osteotomy positioner according to claim 3, characterized in that: It also includes a locking piece, which includes a fixing nut and a connecting hole. The fixing nut passes through the connecting hole and is arranged at the connection between the adjusting rod and the first guide rod. The fixing nut passes through the connecting hole and is arranged at the connection between the positioning rod and the second guide rod.

6. The calcaneal osteotomy positioner according to claim 4, characterized in that: A limiting groove is arranged on the outer side of the fixing column, and the limiting groove extends along the direction of the fixing column. A limiting block is connected to the inner side of the adjusting hole, and the limiting block is connected to the limiting groove. The scale value is arranged on the surface of the limiting groove.

7. The calcaneal osteotomy positioner according to claim 3, characterized in that: It also includes an auxiliary component, which includes a sliding block, an auxiliary line drawing guide and a limit strip. An upper card slot is provided on one side of the sliding block, and a lower card slot is provided on one side of the auxiliary line drawing guide. The upper card slot and the lower card slot are respectively connected to the adjusting rod, and the auxiliary line drawing guide is connected to the limit strip.

8. The calcaneal osteotomy positioner according to claim 7, characterized in that: The auxiliary component also includes a cutting block, which includes an auxiliary cutting guide plate. A mounting groove is provided on one side of the auxiliary cutting guide plate. The adjusting rod is engaged with the mounting groove on the side away from the sliding block. The auxiliary cutting guide plate and the auxiliary drawing guide plate are detachably connected to the sliding block. A cutting through hole is provided on the cutting block.

9. The calcaneal osteotomy positioner according to claim 7, characterized in that: The sliding block is threadedly connected to the positioning column, and the positioning column abuts against the adjusting rod.

10. The calcaneal osteotomy positioner according to claim 4, characterized in that: The fixing part is provided with a plurality of fixing holes, and the adjusting rod is provided with a scale titanium plate.

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