Calcaneus osteotomy displacement measuring and temporary fixing device
By designing a follow -up measurement and temporary fixing device that includes a sliding fixed board and a locking component, the problem that is difficult to measure and fixed during the operation of the bone movement position during surgery, and realize the high precision and high efficiency of the operation. It reduced the pain and cost of patients.
Patent Information
- Application Number
- CN202411494257.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-01-24
AI Technical Summary
In calcaneal osteotomy, it is difficult to accurately measure and maintain the displacement distance of the calcaneal bone, resulting in poor force line correction, and insufficient stability of existing auxiliary devices and poor versatility.
Design a device that includes the first fixed board, the second fixed board and the lock component. Two pieces of bone bone bone in the transfer and displaced by the first fixing department and the third fixed department, the second fixed department and the fourth fixed department and the fourth fourth department and the fourth fourth department The fixed department is relatively sliding along the first direction and locks through the lock module to achieve accurate measurement of temporary fixing and shift volume.
The precise measurement and temporary fixation of the distance between the bone intercourse during the operation and the bone cutting level, which improved the accuracy and efficiency of the surgery, reduced the necessity of repeated correction, reduced the use of implants, reduced the pain and the patient's pain and Surgery cost.
Smart Images
Figure CN119344818A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of medical auxiliary instruments, and in particular relates to a calcaneal osteotomy displacement measurement and temporary fixation device. Background Art
[0002] Lower limb foot deformity is a common disease. Inversion and valgus deformity of the calcaneus are common symptoms of this type of disease, which requires surgical treatment. The principle is to adjust the force line of the calcaneus by inward or outward displacement of the calcaneus and internal fixation after the displacement is in place. During the operation, after the calcaneus is cut, the distance of its inward or outward displacement is difficult to maintain and measure due to the traction of the soft tissue around the osteotomy. Generally, one hand is required to maintain the movement of the calcaneus, and the movement distance is estimated based on experience, and the other hand uses an electric drill and Kirschner wire to fix it. At this time, the bleeding of the wound blocking the line of sight, the traction of the soft tissue, and the looseness of the hand can easily cause the calcaneus to shift again, resulting in deviations in the inward and outward displacement distances of the calcaneus, which in turn leads to poor force line correction results, and even requires repeated corrections. In addition, most of the existing calcaneus osteotomy surgical auxiliary instruments are implants in the body, and their stability is controversial and they also need to be manually maintained. During the operation, it is difficult to avoid being affected by various factors, and the accuracy of the displacement is difficult to guarantee. At the same time, implants in the body have only one or several fixed specifications, cannot be adjusted during surgery, and have poor versatility.
[0003] Therefore, a device is needed to measure the displacement distance of calcaneal osteotomy and temporarily fix it during surgery. Summary of the invention
[0004] In order to solve the above problems existing in the prior art, the present invention provides a calcaneal osteotomy displacement measurement and temporary fixation device. The technical problem to be solved by the present invention is achieved through the following technical solutions:
[0005] The present invention provides a calcaneal osteotomy displacement measurement and temporary fixation device, comprising: a first fixing plate, a second fixing plate and a locking assembly; wherein the first fixing plate comprises: a first fixing portion and a second fixing portion, the first fixing portion being vertically connected to the second fixing portion; the second fixing plate comprises: a third fixing portion and a fourth fixing portion, the third fixing portion being vertically connected to the fourth fixing portion; the first fixing portion and the third fixing portion are respectively connected to two displaced calcaneal osteotomies; the second fixing portion is in contact with the inner side of the fourth fixing portion and can slide relatively along a first direction, and a scale is arranged on the surface of the second fixing portion or the fourth fixing portion along the first direction; a first slide groove is arranged on the second fixing portion, and a second slide groove is arranged on the fourth fixing portion, the first slide groove and the second slide groove are both arranged along the first direction, and the locking assembly is respectively connected to the first slide groove and the second slide groove to lock the second fixing portion and the fourth fixing portion.
[0006] In one embodiment of the present invention, the first fixing portion and the third fixing portion are both elliptical.
[0007] In one embodiment of the present invention, the first fixing portion is connected to the first end of the second fixing portion, and the second end of the second fixing portion extends along the first direction; a plurality of first fixing holes are arranged at intervals on the first fixing portion, and a plurality of self-tapping screws are passed through the plurality of first fixing holes and connected to one of the calcaneal osteotomies; the third fixing portion is connected to the first end of the fourth fixing portion, and the second end of the fourth fixing portion extends along the first direction; a plurality of second fixing holes are arranged at intervals on the third fixing portion, and a plurality of self-tapping screws are passed through the plurality of second fixing holes and connected to another calcaneal osteotomy.
[0008] In one embodiment of the present invention, threads are disposed in the plurality of first fixing holes and the plurality of second fixing holes.
[0009] In one embodiment of the present invention, the length d1 of the second fixing portion is greater than or equal to the length d2 of the fourth fixing portion, and 0 mm ≤ d1 - d2 ≤ 15 mm.
[0010] In one embodiment of the present invention, the length of the first sliding groove is greater than the length of the second sliding groove, and the length of the first sliding groove is less than or equal to 30 mm.
[0011] In one embodiment of the present invention, a first bending portion is connected between the first fixing portion and the second fixing portion, and the radius range of the first bending portion is 1 to 3 mm; a second bending portion is connected between the third fixing portion and the fourth fixing portion, and the radius range of the second bending portion is 1 to 3 mm.
[0012] In one embodiment of the present invention, a plurality of first positioning saw teeth are arranged on the inner side of the second fixed portion, and a plurality of second positioning saw teeth are arranged on the inner side of the fourth fixed portion, and the plurality of first positioning saw teeth and the plurality of second positioning saw teeth are uniformly distributed along the first direction; at least part of the first positioning saw teeth cooperate with part of the second positioning saw teeth, and the directions of the horizontal components of the direction vectors from the tooth bottom to the tooth top of the first positioning saw teeth and the second positioning saw teeth are opposite; wherein, the distribution length of the plurality of first positioning saw teeth is greater than or equal to the distribution length of the plurality of second positioning saw teeth.
[0013] In one embodiment of the present invention, anti-slip knurling is provided on the outer side surfaces of the second fixing portion and the fourth fixing portion.
[0014] In one embodiment of the present invention, the locking assembly is a butterfly screw and a nut, the butterfly screw is slidably connected to the first slide groove and the second slide groove respectively, and slides along the first direction; the nut is threadedly connected to the butterfly screw to lock the second fixing part and the fourth fixing part.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The calcaneal osteotomy displacement measuring and temporary fixation device of the present invention has a first fixing plate and a second fixing plate that can slide relative to each other, a first fixing portion and a third fixing portion respectively connect the two displaced calcaneal osteotomies, a second fixing portion and a fourth fixing portion are relatively fitted together, and a locking component slides in a first slide groove and a second slide groove; the positional relationship between the second fixing portion and the fourth fixing portion is adjusted, and temporary fixation is achieved during surgery through locking by the locking component, and accurate measurement of the calcaneal osteotomy displacement amount during surgery is achieved through a scale.
[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of a calcaneal osteotomy displacement measurement and temporary fixation device provided by an embodiment of the present invention;
[0019] Figure 2 is a schematic structural diagram of a first fixing plate provided in an embodiment of the present invention;
[0020] Figure 3 It is a schematic structural diagram of a second fixing plate provided in an embodiment of the present invention.
[0021] Figure markings: 100-first fixing plate; 110-first fixing portion; 111-first fixing hole; 120-second fixing portion; 121-first slide groove; 122-first positioning serration; 130-first bending portion; 200-second fixing plate; 210-third fixing portion; 211-second fixing hole; 220-fourth fixing portion; 221-second slide groove; 222-second positioning serration; 230-second bending portion; 300-locking assembly. DETAILED DESCRIPTION
[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, a calcaneal osteotomy displacement measurement and temporary fixation device proposed according to the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0023] The above and other technical contents, features and effects of the present invention are clearly presented in the following detailed description of the specific implementation modes in conjunction with the accompanying drawings. Through the description of the specific implementation modes, the technical means and effects adopted by the present invention to achieve the predetermined purpose can be more deeply and specifically understood. However, the attached drawings are only for reference and explanation purposes and are not used to limit the technical solutions of the present invention.
[0024] Embodiment 1
[0025] like Figure 1 As shown, this embodiment provides a calcaneal osteotomy displacement measurement and temporary fixation device, including: a first fixing plate 100, a second fixing plate 200 and a locking assembly 300, wherein one end of the first fixing plate 100 and the second fixing plate 200 are respectively fixedly connected to two displaced calcaneal osteotomies, and the first fixing plate 100 and the second fixing plate 200 can slide relative to each other along a first direction and be locked by the locking assembly 300.
[0026] In this embodiment, if Figures 1 to 3 As shown, the first fixing plate 100 includes: a first fixing portion 110 and a second fixing portion 120, and the first fixing portion 110 is vertically connected to the second fixing portion 120; the second fixing plate 200 includes: a third fixing portion 210 and a fourth fixing portion 220, and the third fixing portion 210 is vertically connected to the fourth fixing portion 220; the first fixing portion 110 and the third fixing portion 210 are respectively connected to the two displaced calcaneal osteotomies; the second fixing portion 120 is attached to the inner side of the fourth fixing portion 220 and can slide relatively along the first direction, and a scale is set along the first direction on the surface of the second fixing portion 120 or the fourth fixing portion 220 to achieve accurate measurement of the displacement distance during surgery.
[0027] In an optional embodiment, if Figures 1 to 3 As shown, the first fixing portion 110 is connected to the first end of the second fixing portion 120, and the second end of the second fixing portion 120 extends along the first direction; a plurality of first fixing holes 111 are arranged at intervals on the first fixing portion 110, and a plurality of self-tapping screws are passed through the plurality of first fixing holes 111 and connected to one of the calcaneal osteotomies; the third fixing portion 210 is connected to the first end of the fourth fixing portion 220, and the second end of the fourth fixing portion 220 extends along the first direction; a plurality of second fixing holes 211 are arranged at intervals on the third fixing portion 210, and a plurality of self-tapping screws (not shown in the figure) are passed through the plurality of second fixing holes 211 and connected to another calcaneal osteotomy.
[0028] Exemplarily, the first fixing plate 100 and the second fixing plate 200 are both L-shaped, the first fixing portion 110 and the third fixing portion 210 are both elliptical to facilitate insertion into the surgical wound surface and protect the wound, and the second fixing portion 120 and the fourth fixing portion 220 fit each other and extend along the first direction.
[0029] Furthermore, the first fixing portion 110 and the third fixing portion 210 are both fitted with the surface of the calcaneal osteotomy. At the same time, since the surface of the calcaneal osteotomy has a certain physiological curvature, this will cause an offset error during fitting. In order to reduce the error, threads are respectively provided in the plurality of first fixing holes 111 and the plurality of second fixing holes 211, and after being threadedly connected with the self-tapping screws, the self-tapping screws are screwed into the calcaneal osteotomy, thereby ensuring that the central axis of the self-tapping screws is perpendicular to the surfaces of the first fixing portion 110 and the third fixing portion 210, respectively.
[0030] Preferably, the diameters of the plurality of first fixing holes 111 and the plurality of second fixing holes 211 may be 3.5 mm, and the diameter of the corresponding self-tapping screws may be 3.5 mm.
[0031] In this embodiment, a first slide groove 121 is provided on the second fixed portion 120, and a second slide groove 221 is provided on the fourth fixed portion 220. The first slide groove 121 and the second slide groove 221 are both arranged along the first direction. The locking assembly 300 respectively connects the first slide groove 121 and the second slide groove 221 to lock the second fixed portion 120 and the fourth fixed portion 220.
[0032] Since one of the two fixing plates needs to be fixed to one of the calcaneal osteotomies during the operation, and then the other fixing plate needs to be relatively slid and connected to the other calcaneal osteotomy, the second fixing portion 120 and the fourth fixing portion 220 are set to different lengths for easy distinction. Exemplarily, the length d1 of the second fixing portion 120 is greater than or equal to the length d2 of the fourth fixing portion 220. On this basis, with reference to the range of displacement of the calcaneal osteotomy of the human body, the difference between the length d1 of the second fixing portion 120 and the length d2 of the fourth fixing portion 220 is set to 0mm≤d1-d2≤15mm.
[0033] In an optional embodiment, the length of the first slide groove 121 is greater than the length of the second slide groove 221, and the length of the first slide groove 121 is less than or equal to 30 mm.
[0034] Exemplarily, the length of the first slide groove 121 is 30 mm, and the length of the second slide groove 221 is 10 mm. This is because the maximum relative sliding distance between the first fixing plate 100 and the second fixing plate 200 should be limited by the conventional displacement distance. By reasonably setting the lengths of the first slide groove 121 and the second slide groove 221, it is possible to avoid injuries caused by excessive displacement during surgery. Further, the difference between the length d1 of the second fixing portion 120 and the length d2 of the fourth fixing portion 220 is set to 15 mm, and the relative displacement range between the length of the second fixing portion 120 and the fourth fixing portion 220 is -15 mm to +15 mm.
[0035] Furthermore, scales are relatively arranged on the surface of the second fixing part 120 near the first slide groove 121 and on the surface of the fourth fixing part 220 near the second slide groove 221, so as to accurately measure the moving distance when the second fixing part 120 and the fourth fixing part 220 slide relative to each other, thereby realizing the accurate measurement of the calcaneal osteotomy displacement distance during the operation. Preferably, the scale is in millimeters.
[0036] It is worth noting that accurate intraoperative measurement of displacement distance not only helps to improve surgical accuracy, but also accumulates surgical data and provides data support for further research.
[0037] In an optional embodiment, a first bending portion 130 is connected between the first fixing portion 110 and the second fixing portion 120, and the radius range of the first bending portion 130 is 1 to 3 mm; a second bending portion 230 is connected between the third fixing portion 210 and the fourth fixing portion 220, and the radius range of the second bending portion 230 is 1 to 3 mm.
[0038] Exemplarily, the radii of the first bending portion 130 and the second bending portion 230 are both 2 mm.
[0039] It is worth noting that by respectively providing the first bending portion 130 and the second bending portion 230, the first fixing plate 100 and the second fixing plate 200 can be ergonomically designed, and after the first fixing portion 110 and the third fixing portion 210 are respectively extended into the surgical incision surface, pulling damage to the soft tissue around the surgical incision surface can be avoided.
[0040] In an optional embodiment, a plurality of first positioning saw teeth 122 are provided on the inner side of the second fixed portion 120, and a plurality of second positioning saw teeth 222 are provided on the inner side of the fourth fixed portion 220, and the plurality of first positioning saw teeth 122 and the plurality of second positioning saw teeth 222 are uniformly distributed along the first direction; at least part of the first positioning saw teeth 122 and part of the second positioning saw teeth 222 cooperate with each other, and the horizontal component vector of the direction vector from the bottom of the tooth to the top of the tooth of the first positioning saw teeth 122 and the second positioning saw teeth 222 are in opposite directions.
[0041] Furthermore, the distribution length of the plurality of first positioning saw teeth 122 is greater than or equal to the distribution length of the plurality of second positioning saw teeth 222 to conform to the ergonomic distance range of calcaneal osteotomy displacement.
[0042] Exemplarily, the tooth bottoms and tooth tops of the plurality of first positioning saw teeth 122 and the plurality of second positioning saw teeth 222 are provided with fillets with a radius ranging from 0.01 to 0.1 mm, which are easy to disinfect and sterilize and increase the service life, and can also avoid scratching the operator; at the same time, the surface roughness of the plurality of first positioning saw teeth 122 and the plurality of second positioning saw teeth 222 is set to 0.2 μm to ensure the positioning accuracy, and a material with a Rockwell hardness of 35, such as stainless steel, can be selected to ensure wear resistance.
[0043] It is worth noting that at least part of the first positioning serrations 122 cooperates with the second positioning serrations 222 to achieve directional positioning during locking and facilitate accurate distance adjustment. In other words, when the second fixing portion 120 and the fourth fixing portion 220 move relative to each other along the first direction, part of the first positioning serrations 122 always cooperate with the second positioning serrations 222. Preferably, the length of the cooperation between a plurality of first positioning serrations 122 and a plurality of second positioning serrations 222 is at least 4 mm. Since a thrust force is formed along the first direction between the mutually cooperating first positioning serrations 122 and the second positioning serrations 222, after locking, the fourth fixing portion 220 can only move in one of the directions of pushing or pulling when the second fixing portion 120 is pushed or pulled, and will be stopped in the other direction by the thrust force of the positioning serrations, thereby avoiding relative movement between the second fixing portion 120 and the fourth fixing portion 220 when the calcaneal osteotomy is connected by a self-tapping screw. In addition, the pitch between two adjacent positioning saw teeth corresponds to the millimeter scale, that is, when the positioning saw teeth cooperate with each other, the relative scales between the second fixing portion 120 and the fourth fixing portion 220 are all integers, so as to accurately control the displacement distance. Preferably, the pitch between two adjacent positioning saw teeth is 1 mm. On this basis, for the case where one of the fixing plates needs to be pushed along the first direction, the thrust direction between the first positioning saw tooth 122 and the second positioning saw tooth 222 is parallel to the opposite direction of the pushing direction, thereby avoiding the loose locking due to the traction of the calcaneal osteotomy or the soft tissue itself during the temporary fixation process. Similarly, for the case where one of the fixing plates needs to be pulled along the first direction, the thrust direction between the first positioning saw tooth 122 and the second positioning saw tooth 222 is parallel to the opposite direction of the pulling direction. In other words, for both pushing and pulling, the sawtooth directions of the first positioning saw tooth 122 and the second positioning saw tooth 222 can be set accordingly.
[0044] Exemplarily, the outer surfaces of the second fixing portion 120 and the fourth fixing portion 220 are both provided with anti-skid knurling to prevent slipping during holding.
[0045] In an optional embodiment, the locking assembly 300 is a butterfly screw and a nut, the butterfly screw is slidably connected to the first slide groove 121 and the second slide groove 221 respectively, and slides along the first direction; the nut is threadedly connected to the butterfly screw, and the second fixing part 120 and the fourth fixing part 220 are locked by tightening the fan-shaped handle of the butterfly screw.
[0046] Preferably, the locking assembly 300 also includes a spring, which is coaxially sleeved on the butterfly screw and disposed between the end of the butterfly screw and the nut to provide a pre-tightening force. In addition, in order to avoid separation or falling off between the butterfly screw and the nut during surgery, a limiting structure is also provided at the threaded end of the butterfly screw. The limiting structure can be a limiting groove, and the specific implementation form is not limited in this embodiment. The limiting structure does not affect the threaded connection between the butterfly screw and the nut, and also avoids separation or falling off between the butterfly screw and the nut, which is conducive to locking by single-handed operation during surgery.
[0047] Taking the outward displacement of calcaneal osteotomy as an example, the working principle of the calcaneal osteotomy displacement measurement and temporary fixation device of this embodiment is explained: first align the first fixing portion 110 of the first fixing plate 100 with the third fixing portion 210 of the second fixing plate 200, and make part of the first positioning serrations 122 and part of the second positioning serrations 222 cooperate with each other, and then pre-tighten the combination through the locking assembly 300, so that the first fixing portion 110 and the second fixing plate 200 can remain relatively still when not subjected to external force. Extend the first fixing portion 110 into the surgical incision section and parallel to the osteotomy line, and then fix the first fixing portion 110 to the proximal calcaneal osteotomy and close to the bone surface through the self-tapping screw. After fixation, slide the second fixing plate 200 to the required scale position, and then tighten the butterfly screw. After checking that the sliding distance is correct, use two 3.5mm self-tapping screws to fix the third fixing part 210 on the distal calcaneal osteotomy. When the self-tapping screws are screwed in, the distal calcaneal osteotomy will slide outward and shift. Continue to screw in the self-tapping screws until the third fixing part 210 is close to the bone surface of the distal calcaneal osteotomy. At this point, the precise displacement and temporary fixation of the distal calcaneal osteotomy are completed. After that, the hollow screw system or Kirschner wire can be used to fix the proximal and distal calcaneal osteotomies respectively. After the fluoroscopy is satisfactory, remove the self-tapping screws and remove the calcaneal osteotomy displacement measurement and temporary fixation device of this embodiment.
[0048] Taking the internal displacement of calcaneal osteotomy as an example, first align the first fixing portion 110 of the first fixing plate 100 with the third fixing portion 210 of the second fixing plate 200, and make part of the first positioning serrations 122 and part of the second positioning serrations 222 cooperate with each other, and then pre-tighten the combination through the locking assembly 300, so that the first fixing portion 110 and the second fixing plate 200 can remain relatively still when not subjected to external force. Extend the third fixing portion 210 into the surgical incision section and parallel to the osteotomy line, and then fix the third fixing portion 210 to the proximal calcaneal osteotomy and close to the bone surface through the self-tapping screw. After fixation, slide the first fixing plate 100 to the required scale position, and then tighten the butterfly screw. After checking that the sliding distance is correct, use two 3.5mm self-tapping screws to fix the first fixing part 110 to the distal calcaneal osteotomy. When the self-tapping screws are screwed in, the distal calcaneal osteotomy will slide inward and shift. Continue to screw in the self-tapping screws until the first fixing part 110 is close to the bone surface of the distal calcaneal osteotomy. At this point, the precise displacement and temporary fixation of the distal calcaneal osteotomy are completed. After that, the cannulated screw system or Kirschner wire can be used to fix the proximal and distal calcaneal osteotomies respectively. After satisfactory fluoroscopy, remove the self-tapping screws and remove the calcaneal osteotomy displacement measurement and temporary fixation device of this embodiment.
[0049] It should be noted that by reasonably setting the center of gravity distribution of the first fixing plate 100 and the second fixing plate 200, the center of gravity is close to the bone surface of the connected calcaneal osteotomy, ensuring that the second fixing part 120, the fourth fixing part 220 and the locking assembly 300 will not slip out of the surgical wound cut surface due to excessive weight during the stage from assembly to fixation, thereby avoiding wound damage or infection caused by operational errors. In addition, all processed surfaces of the calcaneal osteotomy displacement measurement and temporary fixation device of this embodiment ensure the minimum contact angle required for alcohol disinfection, so that the alcohol is fully moistened during the disinfection process to ensure thorough disinfection.
[0050] It is worth noting that by accurately measuring the displacement distance of the calcaneal osteotomy during surgery, the success rate of the surgical operation is improved. At the same time, as a temporary fixation device, it can not only accurately fix the relative position between the distal calcaneal osteotomy and the proximal calcaneal osteotomy in a free state, maintain the state and position after intraoperative correction, realize the accurate implementation of preoperative predictions during surgery, and improve postoperative effects and surgical efficiency; at the same time, it can also reduce the use of implants, avoid wound complications, reduce patient injuries and pain, and reduce surgical costs to alleviate the economic burden on patients.
[0051] The calcaneal osteotomy displacement measuring and temporary fixation device of the present invention has a first fixing plate and a second fixing plate that can slide relative to each other, a first fixing portion and a third fixing portion respectively connect the two displaced calcaneal osteotomies, a second fixing portion and a fourth fixing portion are relatively fitted together, and a locking component slides in a first slide groove and a second slide groove; the positional relationship between the second fixing portion and the fourth fixing portion is adjusted, and temporary fixation is achieved during surgery through locking by the locking component, and accurate measurement of the calcaneal osteotomy displacement amount during surgery is achieved through a scale.
[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant is intended to cover non-exclusive inclusion, so that the article or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or device including the elements. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The orientation or position relationship indicated by "up", "down", "left", "right", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.
[0053] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A calcaneal osteotomy displacement measurement and temporary fixation device, characterized in that: include: A first fixing plate (100), a second fixing plate (200) and a locking assembly (300); Wherein, the first fixing plate (100) comprises: a first fixing portion (110) and a second fixing portion (120), the first fixing portion (110) being vertically connected to the second fixing portion (120); the second fixing plate (200) comprises: a third fixing portion (210) and a fourth fixing portion (220), the third fixing portion (210) being vertically connected to the fourth fixing portion (220); the first fixing portion (110) and the third fixing portion (210) are respectively connected to the two displaced calcaneal osteotomies; The second fixing portion (120) is in contact with the inner side of the fourth fixing portion (220) and can slide relative to each other along a first direction, and a scale is provided on the surface of the second fixing portion (120) or the fourth fixing portion (220) along the first direction; The second fixing portion (120) is provided with a first slide groove (121), and the fourth fixing portion (220) is provided with a second slide groove (221), the first slide groove (121) and the second slide groove (221) are both arranged along the first direction, and the locking assembly (300) is respectively connected to the first slide groove (121) and the second slide groove (221) to lock the second fixing portion (120) and the fourth fixing portion (220).
2. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: The first fixing portion (110) and the third fixing portion (210) are both elliptical.
3. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: The first fixing portion (110) is connected to the first end of the second fixing portion (120), and the second end of the second fixing portion (120) extends along the first direction; a plurality of first fixing holes (111) are arranged at intervals on the first fixing portion (110), and a plurality of self-tapping screws pass through the plurality of first fixing holes (111) and are connected to one of the calcaneal osteotomies; The third fixing portion (210) is connected to the first end of the fourth fixing portion (220), and the second end of the fourth fixing portion (220) extends away from the first direction; a plurality of second fixing holes (211) are arranged at intervals on the third fixing portion (210), and a plurality of self-tapping screws are passed through the plurality of second fixing holes (211) to connect to another piece of calcaneal osteotomy.
4. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 3, characterized in that: The plurality of first fixing holes (111) and the plurality of second fixing holes (211) are both provided with threads.
5. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: The length d1 of the second fixing portion (120) is greater than or equal to the length d2 of the fourth fixing portion (220), and 0mm≤d1-d2≤15mm.
6. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: The length of the first sliding groove (121) is greater than the length of the second sliding groove (221), and the length of the first sliding groove (121) is less than or equal to 30 mm.
7. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: A first bending portion (130) is connected between the first fixing portion (110) and the second fixing portion (120), and a radius of the first bending portion (130) ranges from 1 to 3 mm; a second bending portion (230) is connected between the third fixing portion (210) and the fourth fixing portion (220), and a radius of the second bending portion (230) ranges from 1 to 3 mm.
8. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: A plurality of first positioning saw teeth (122) are arranged on the inner side of the second fixing portion (120), and a plurality of second positioning saw teeth (222) are arranged on the inner side of the fourth fixing portion (220), and the plurality of first positioning saw teeth (122) and the plurality of second positioning saw teeth (222) are evenly distributed along the first direction; at least part of the first positioning saw teeth (122) and part of the second positioning saw teeth (222) cooperate with each other, and the directions of the horizontal components of the direction vectors from the tooth bottom to the tooth top of the first positioning saw teeth (122) and the second positioning saw teeth (222) are opposite; Wherein, the distribution length of the plurality of first positioning saw teeth (122) is greater than or equal to the distribution length of the plurality of second positioning saw teeth (222).
9. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: Anti-slip knurling is provided on the outer surfaces of the second fixing portion (120) and the fourth fixing portion (220).
10. The calcaneal osteotomy displacement measurement and temporary fixation device according to claim 1, characterized in that: The locking assembly (300) is a butterfly screw and a nut, wherein the butterfly screw is slidably connected to the first sliding groove (121) and the second sliding groove (221) respectively, and slides along the first direction; the nut is threadedly connected to the butterfly screw to lock the second fixing portion (120) and the fourth fixing portion (220).