Orthopedic surgery three-dimensional scale

Abstract

The utility model discloses a three-dimensional scale for orthopedic surgery, which relates to the technical field of medical instruments and comprises a quick-connection clamping rod, a connecting rod and a calibration flat plate. One end of the connecting rod is fixedly connected with the quick-connection clamping rod, and the other end of the connecting rod is fixedly connected with the calibration flat plate; the calibration flat plate comprises a first surface located at the top and a second surface located at the bottom, the sections of the first surface and the second surface are wavy, and the bending degrees of the first surface and the second surface are consistent; a light reflecting ball is installed on the calibration flat plate, the light reflecting ball is arranged at the concave position of the first surface or the second surface, and the light reflecting ball is used for identification and positioning of the calibration device. In this way, the calibration flat plate is arranged to be in a wavy shape, cooling warping stress of the calibration flat plate after injection molding can be shared by corners, warping is avoided, meanwhile, the wavy surface has better stability compared with a plane, and demolding is easier to complete compared with a hollowed-out and beam-added design form.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a three-dimensional scale for orthopedic surgery. Background Technology

[0002] Three-dimensional scales are used for three-dimensional scanning registration in orthopedic surgery. During the injection molding process, non-metallic materials are required for three-dimensional perspective. Currently, non-metallic materials with good rigidity, such as PEEK and carbon fiber, are available on the market for sterilization and reuse. However, the processing cost is high, and the stability of the small balls is poor after repeated sterilization.

[0003] Meanwhile, three-dimensional scales are mostly asymmetrical in shape, with stress concentration at many sharp corners. They are prone to deformation and warping during long-term storage and injection molding. Furthermore, stress concentration areas are thickened or reinforced with ribs during manufacturing, resulting in larger material usage and more advanced manufacturing processes. Utility Model Content

[0004] The purpose of this invention is to solve at least one of the problems in the background art mentioned above, and to provide a three-dimensional scale for orthopedic surgery.

[0005] To achieve the above objectives, this utility model provides a three-dimensional surgical scale for orthopedics, comprising:

[0006] Quick-connect clamping rod, connecting rod, and calibration plate;

[0007] One end of the connecting rod is fixedly connected to the quick-connect clamping rod, and the other end is fixedly connected to the calibration plate.

[0008] The calibration plate includes a first surface at the top and a second surface at the bottom. The cross-sections of the first surface and the second surface are wavy, and the curvature of the first surface and the second surface is the same.

[0009] A reflective ball is installed on the calibration plate. The reflective ball is located in a recess on the first or second surface and is used for identification and positioning by the calibration device.

[0010] Preferably, the quick-connect clamping rod, the connecting rod, and the calibration plate are symmetrically arranged on the left and right sides with respect to the same center line.

[0011] Preferably, a plurality of first grooves are provided on the top plane of the connecting rod, and the plurality of first grooves are axially spaced apart;

[0012] A plurality of second grooves are provided on the bottom plane of the connecting rod, and the plurality of second grooves are axially spaced apart;

[0013] Multiple first grooves and multiple second grooves are correspondingly arranged, and there is a gap between the upper and lower corresponding first grooves and second grooves.

[0014] Preferably, the quick-connect clamping rod, connecting rod, and calibration plate are made of glass fiber reinforced plastic material.

[0015] Preferably, a limiting member is provided at the recess of the first or second surface, and the reflective ball is installed in the limiting member, which is used to restrict the movement of the reflective ball.

[0016] Preferably, the limiting member includes a first clamping plate and a second clamping plate, and when the reflective ball is located within the limiting member, the first clamping plate and the second clamping plate together surround the reflective ball;

[0017] The first and second clamping plates are interference-fitted with the reflective ball.

[0018] Preferably, the first clamping plate and the second clamping plate are respectively disposed on the protrusions of two adjacent parts of the first surface or the second surface.

[0019] Preferably, the quick-connect clamping rod, connecting rod, and calibration plate have the same thickness.

[0020] Preferably, a third groove is provided on the quick-connect clamping rod, the third groove being used to clamp the spine.

[0021] Preferably, the quick-connect clamping rod, connecting rod, and calibration plate are manufactured using injection molding.

[0022] Based on this, the beneficial effects of this utility model are as follows:

[0023] 1. The solution of this utility model is that the plane of the calibration plate used to install the reflective ball is set to be wavy, and the reflective ball is installed in the recess of the wavy surface, so that the stress is concentrated at the corner. When the cooling shrinkage after injection molding is caused by the warping stress, it will be distributed by the arc surface, thereby avoiding warping. Compared with the flat reflective ball mounting surface in the traditional technology, it has better stability. At the same time, compared with the flat surface with hollow beam design, it is easier to complete the injection molding demolding.

[0024] 2. With the solution of this utility model, the three-dimensional scale for orthopedic surgery is symmetrical as a whole, which can make the whole device heat evenly and avoid unilateral warping caused by high heat on one side during injection molding. At the same time, the uniform wall thickness of the whole device can prevent warping caused by high local heat dissipation, large shrinkage rate, and insufficient cooling when it is removed. The uniform and symmetrical structure of the whole device is also conducive to long-term preservation without warping.

[0025] 3. In the solution of this utility model, multiple corresponding first grooves and second grooves are provided at the top and bottom of the connecting rod, and the multiple first grooves are axially spaced apart and the multiple second grooves are axially spaced apart, so that an I-shaped reinforcing rib is formed on the connecting rod, which can prevent the connecting rod from warping in the axial direction.

[0026] 4. The overall device is made of glass fiber reinforced plastic material, which can effectively reduce the problem of uneven shrinkage in the direction of melt flow. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram illustrating the structure of a three-dimensional surgical scale for orthopedic procedures according to one embodiment of the present invention.

[0029] Figure 2 A schematic cross-sectional view of a calibration plate according to one embodiment of the present invention;

[0030] Figure 3 A schematic cross-sectional view of a connector according to one embodiment of the present invention;

[0031] Figure 4 A schematic diagram illustrating the structure of a limiting member according to one embodiment of the present invention;

[0032] Explanation of reference numerals in the attached drawings: quick-connect clamping rod 10, third groove 101, connecting rod 20, first groove 201, second groove 202, calibration plate 30, first surface 301, second surface 302, limiting member 303, first clamping plate 3031, second clamping plate 3032, reflective ball 40. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is formed "upper" or "lower" of another element, it can not only be formed directly "upper" or "lower" of the other element, but also indirectly "upper" or "lower" of the other element through an intermediate element.

[0036] Figure 1 This schematic diagram illustrates the structure of a three-dimensional surgical scale for orthopedic procedures according to one embodiment of the present invention. Figure 2 A schematic cross-sectional view of a calibration plate according to one embodiment of the present invention is shown, such as... Figure 1 , 2 As shown, this utility model provides a three-dimensional surgical scale for orthopedic procedures, comprising:

[0037] Quick-connect clamping rod 10, connecting rod 20 and calibration plate 30;

[0038] One end of the connecting rod 20 is fixedly connected to the quick-connect clamping rod 10, and the other end is fixedly connected to the calibration plate 30;

[0039] The calibration plate 30 includes a first surface 301 at the top and a second surface 302 at the bottom. The cross-sections of the first surface 301 and the second surface 302 are wavy, and the curvature of the first surface 301 and the second surface 302 is the same.

[0040] A reflective ball 40 is installed on the calibration plate 30. The reflective ball 40 is located in the recess of the first surface 301 or the second surface 302. The reflective ball 40 is used for identification and positioning of the calibration device.

[0041] Specifically, the quick-connect clamping rod 10, the connecting rod 20, and the calibration plate 30 are fixedly connected in sequence. The three have the same thickness. The whole device is a flat straight plate and is made by injection molding, which can reduce the requirements of mold opening and demolding processes.

[0042] Meanwhile, the quick-connect clamping rod 10, connecting rod 20, and calibration plate 30 are made of glass fiber reinforced plastic material, which can effectively reduce the problem of uneven shrinkage in the direction of melt flow. Furthermore, due to the use of this material, this device can be used as an injection molding consumable, ensuring the processing accuracy for each use, and at the same time, the processing cost is low.

[0043] The first surface 301 and the second surface 302 at the top and bottom of the calibration plate 30 are wavy, replacing the flat surface in the traditional technology, which makes the overall structure more stable and more accurate.

[0044] The calibration plate 30 is used to mount a reflective ball 40. The reflective ball 40 can be used to identify and position the calibration device, such as a binocular camera. By mounting the reflective ball 40 in the recess of the wavy plane of the first surface 301 or the second surface 302, the stress can be concentrated at the corner. When the device cools and shrinks, the stress generated is distributed by the wall thickness between the first surface 301 and the second surface 302, thus preventing the calibration plate 30 from warping due to cooling.

[0045] Furthermore, the quick-connect clamping rod 10, the connecting rod 20, and the calibration plate 30 are symmetrically arranged on the left and right sides with the same center of symmetry. This arrangement ensures overall symmetry and prevents warping deformation even during long-term storage or demolding when the temperature has not completely cooled down.

[0046] Furthermore, Figure 3 A schematic cross-sectional view of a connector according to one embodiment of the present invention is shown, such as... Figure 3 As shown:

[0047] A plurality of first grooves 201 are provided on the top plane of the connecting rod 20, and the plurality of first grooves 201 are axially spaced apart;

[0048] Multiple second grooves 202 are provided on the bottom plane of the connecting rod 20, and the multiple second grooves 202 are axially spaced.

[0049] Multiple first grooves 201 and multiple second grooves 202 are provided correspondingly, and there is a gap between the corresponding first grooves 201 and second grooves 202.

[0050] Specifically, the multiple first grooves 201 and the second grooves 202 are axially spaced apart, which can form I-shaped reinforcing ribs on the surface of the connecting rod 20, thus preventing the connecting rod 20 from warping in the axial direction.

[0051] Meanwhile, there is a gap between the corresponding first groove 201 and second groove 202, and the thickness of this gap is preferably 3mm, which can prevent local deformation on the left and right sides of the connecting rod 20.

[0052] Furthermore, Figure 4 This schematic diagram illustrates the structure of a limiting member according to one embodiment of the present invention, as shown below. Figure 2 , 4 As shown:

[0053] A limiting member 303 is provided in the recess of the first surface 301 or the second surface 302, and the reflective ball 40 is installed in the limiting member 303. The limiting member 303 is used to restrict the movement of the reflective ball 40.

[0054] Specifically, the limiting member 303 includes a first clamping plate 3031 and a second clamping plate 3032. When the reflective ball 40 is inside the limiting member 303, the first clamping plate 3031 and the second clamping plate 3032 together surround the reflective ball 40, and the first clamping plate 3031 and the second clamping plate 3032 are interference fit with the reflective ball 40.

[0055] Both the first clamping plate 3031 and the second clamping plate 3032 are arc-shaped, and there is a gap between the two ends of the first clamping plate 3031 and the two ends of the second clamping plate 3032. When the reflective ball 40 is placed between the first clamping plate 3031 and the second clamping plate 3032, the two plates can be opened to clamp the reflective ball 40. At the same time, when it is necessary to remove the reflective ball 40, it can be removed through the space at the gap, which is convenient for disassembly and assembly.

[0056] Furthermore, the first clamping plate 3031 and the second clamping plate 3032 are disposed on two adjacent protrusions on the first surface 301 or the second surface 302, so that the reflective ball 40 is located exactly in the recess of the first surface 301 or the second surface 302 when it is installed, so that the reflective ball 40 can contact the corner of the plane, realize the stress distribution at the corner, and effectively improve the stability of the disinfection of the reflective ball 40.

[0057] Furthermore, a third groove 101 is provided on the quick-connect clamping rod 10. The third groove 101 can be used for clamping the three-dimensional scale for orthopedic surgery and the spine to achieve rapid installation.

[0058] In summary, by setting the surface of the calibration plate 30 to a wavy shape, the warping stress generated by the cooling and shrinkage after injection molding is distributed at the corners, preventing the calibration plate 30 from warping and affecting the positioning of the reflective ball 40. At the same time, the reflective ball 40 is installed in the recess of the wavy surface, which also distributes the interaction force between the reflective ball 40 and the plane, increasing the stability of the reflective ball 40 installation and solving the problem of poor disinfection stability of the reflective ball 40 in traditional technology.

[0059] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the technology involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the described technical concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An orthopedic surgical three-dimensional ruler characterized by, The utility model relates to a kind of fastening clamping rod, connecting rod and calibration flat plate comprising: The connecting rod one end is fixedly connected with the fastening clamping rod, the other end is fixedly connected with the calibration flat plate; The calibration flat plate includes first surface at top and second surface at bottom, the cross section of the first surface and second surface is wavy, and the bending degree of the first surface and second surface is consistent; Reflective ball is installed on the calibration flat plate, the reflective ball is arranged in the recess of the first surface or second surface, and the reflective ball is used for calibration device identification positioning. The fastening clamping rod, connecting rod and calibration flat plate are respectively arranged symmetrically with the same center line.

2. The three-dimensional scale for orthopedic surgery according to claim 1, wherein, A plurality of first grooves are arranged on the top plane of the connecting rod, and the plurality of first grooves are arranged axially spaced apart; 3. The three-dimensional scale for orthopedic surgery according to claim 1, wherein, A plurality of second grooves are arranged on the bottom plane of the connecting rod, and the plurality of second grooves are arranged axially spaced apart; The plurality of first grooves and the plurality of second grooves are correspondingly arranged, and there is a spacing between the corresponding first groove and second groove. The fastening clamping rod, connecting rod and calibration flat plate are made of glass fiber reinforced plastic material.

4. The three-dimensional scale for orthopedic surgery of claim 1, wherein, Limiting member is arranged in the recess of the first surface or second surface, the reflective ball is installed in the limiting member, and the limiting member is used to limit the movement of the reflective ball.

5. The three-dimensional scale for orthopedic surgery of claim 1, wherein, The limiting member includes first clamping plate and second clamping plate, when the reflective ball is located in the limiting member, the first clamping plate and second clamping plate jointly surround the reflective ball.

6. The orthopaedic surgical three-dimensional ruler of claim 5, wherein, The first clamping plate and second clamping plate are interference fit with the reflective ball. The first clamping plate and second clamping plate are respectively arranged at the convex position of adjacent two of the first surface or second surface.

7. The orthopaedic surgical three-dimensional ruler of claim 6, wherein, The thickness of the fastening clamping rod, connecting rod and calibration flat plate is the same.

8. The three-dimensional scale for orthopedic surgery of claim 1, wherein, Third groove is arranged on the fastening clamping rod, and the third groove is used for clamping spine.

9. The three-dimensional scale for orthopedic surgery of claim 1, wherein, The fastening clamping rod, connecting rod and calibration flat plate are made by injection molding process.

10. The orthopedic surgical three-dimensional ruler of claim 1, wherein, ​

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