A rod bender for connecting rods in orthopedic spine surgery and a preparation method thereof

Abstract

The present invention discloses a rod bender for an orthopedic spinal surgery connecting rod and a preparation method thereof, and relates to the field of medical devices, comprising a bending table, wherein load-bearing plates are fixedly installed on the inner side of the bending table and at both ends located in the length direction of the bending table, and the load-bearing plates are used to support the connecting rod; the rod bender for an orthopedic spinal surgery connecting rod and a preparation method thereof drive two pressure wheels to move along the length direction of a supporting slider through an adjusting component, and drive the supporting slider to move along the width direction of the bending table through an A driving member, thereby adjusting the positions of the two pressure wheels, and the pressure wheels in a plurality of bending mechanisms form the shape of the connecting rod to be bent, and the connecting rod is bent and formed by moving the pressure wheels along the length direction of the supporting slider. During the bending and forming process, the pressure wheels can rotate around their own axis, so that when the connecting rod is bent and formed, the hard friction force on the connecting rod is reduced, thereby reducing the hard pulling on the connecting rod.

Description

Technical Field

[0001] The invention relates to medical device technology, and in particular to a rod bender for connecting rods in orthopedic spine surgery and a preparation method thereof. Background Art

[0002] Orthopedic spinal surgery connecting rods are a common implant used to treat spinal problems. The connecting rods are made of metal (such as titanium alloy or stainless steel) or polymer (such as polyetheretherketone), usually made of metal.

[0003] If the patient's spine has a complex curvature or deformity, it may be necessary to set up a multi-section curved connecting rod to better match the shape of the spine and provide better support and stability. The existing rod bender for spinal surgery connecting rods is mostly bent by doctors using handheld bending tools, and the existing bending machines mostly use a bending mechanism to perform single-point multiple bendings, and it is necessary to repeatedly control the movement of the connecting rod to complete the multi-section bending. The existing Chinese invention patent with publication number CN114145834A discloses a rod bender and a forming method for orthopedic spinal surgery connecting rods. The rod bender and the forming method for orthopedic spinal surgery connecting rods form multiple force points on the connecting rod through multiple groups of sliding parts to form an array, realize multi-point bending, and can more accurately quantify and control the curvature. The arc shape of the connecting rod is set by using multiple sliding parts arrays of sliding modules;

[0004] When the connecting rod is bent in multiple sections, single-point multiple bending is mostly used. Single-point multiple bending is to move the connecting rod to make it bend multiple times on the bending component on the bending machine. This type of bending is inefficient. The connecting rod is also bent once by squeezing or pulling the connecting rod. However, this type of bending will apply a large rigid pulling force to the connecting rod, which will reduce the strength of the connecting rod. Summary of the invention

[0005] The object of the present invention is to provide a rod bender for connecting rods in orthopedic spinal surgery and a preparation method thereof, so as to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: A rod bender for connecting rods in orthopedic spinal surgery, comprising a bending table, a bearing plate is fixedly installed on the inner side of the bending table and at both ends in the length direction of the bending table, and the bearing plate is used to support the connecting rod;

[0007] A plurality of bending mechanisms are arranged at equal intervals inside the bending table and along its length direction. The bending mechanism includes a supporting slider and two pressing wheels. The length direction of the supporting slider is the same as the width direction of the bending table. An adjusting component and a limiting component are connected between the two pressing wheels. The adjusting component can drive the two pressing wheels to move along the length direction of the supporting slider and make one of the pressing wheels rotate around the center axis of the other pressing wheel. The limiting component is used to keep the straight-line distance between the center axes of the two pressing wheels unchanged.

[0008] After the adjustment component drives the two pressing wheels to move along the length direction of the supporting slider, the limiting component keeps the straight-line distance between the central axes of the two pressing wheels unchanged, and the adjustment component drives one of the pressing wheels to rotate around the central axis of the other pressing wheel;

[0009] One side of the support slider is connected to a first guide member for limiting its movement along the width direction of the bending table, and the other side of the support slider is connected to an A driving member for driving its movement.

[0010] Furthermore, the adjustment component includes a vertical axis A, one end of which is rotatably connected to the end of the pressure wheel shaft, a fixing member for clamping and fixing the vertical axis A is provided at the bottom end of the vertical axis A, one side of the fixing member is connected to a driving member B for driving the vertical axis A to rotate around the axis of the vertical axis A, one side of the fixing member is connected to a slider A, the side surface of the slider A is slidably connected to the supporting slider, and one side of the slider A is connected to a driving member C for driving the slider to move along the length direction of the supporting slider.

[0011] Furthermore, the fixing part includes a slide rail, on which two clamping parts are symmetrically arranged, and the bottom ends of the clamping parts are respectively slidably connected to the slide rails. A screw is rotatably connected to the slide rail, and two sections of threads with opposite rotation directions are arranged on the A screw. The A screw is threadedly connected to the two clamping parts through the two sections of threads with opposite rotation directions, and one end of the A screw is connected to an A rotating drive part that drives it to rotate around its own axis.

[0012] Furthermore, the B driving member includes a B vertical shaft whose top end is rotatably connected to the slide rail, whose bottom end is externally rotatably connected to the A slider, whose central axis is colinear with the midline axis of the A vertical shaft, and whose bottom end is connected to a B rotating driving member that drives it to rotate around its own axis.

[0013] Furthermore, the C driving component includes a B screw, both ends of which are rotatably connected to the supporting slider, and two sections of threads with opposite rotation directions are provided on the B screw. The B screw is threadably connected to the two A sliders through the two sections of threads with opposite rotation directions, and one end of the B screw is connected to a C rotating driving component that drives it to rotate around its own axis.

[0014] Furthermore, the limiting assembly includes a sleeve A, one side of which is rotatably connected to the rotating shaft of one of the pressure wheels, and the other side of the sleeve A is fixedly connected to the adjacent vertical shaft A, a sleeve B is slidably connected to the inner side of the sleeve A, one side of the sleeve B is fixedly connected to the adjacent vertical shaft A, an end of the sleeve B is rotatably connected to the rotating shaft of the other pressure wheel, and one side of the sleeve B is connected to a limiting member that prevents it from moving along the length direction of the sleeve A.

[0015] Furthermore, the limiting member includes an A obstruction member and a B obstruction member, the A obstruction member includes an A cross bar, the outside of the A cross bar is slidably connected to the A sleeve, the outside of the A cross bar is sleeved with an A spring, the two ends of the A spring are respectively fixedly connected to the A cross bar and the A sleeve, one end of the A cross bar is fixedly connected to an A wedge block, one side of the A wedge block is provided with a B wedge block, the top of the B wedge block is fixedly connected to an A plug rod, the outside of the A plug rod is sleeved with a B spring, the two ends of the B spring are respectively fixedly connected to the B wedge block and the A sleeve, the A sleeve is provided with a plurality of A sockets at equal intervals along its length direction, and the other end of the A cross bar is fixedly connected to an A pressure plate.

[0016] Furthermore, the B obstruction member includes a B cross bar, the outside of which is slidably connected to the B sleeve, a C spring is sleeved on the outside of the B cross bar, and both ends of the C spring are respectively fixedly connected to the B cross bar and the B sleeve, a C wedge is fixedly connected to one end of the B cross bar, a D wedge is provided on one side of the C wedge, a B insertion rod is fixedly connected to the top of the D wedge, a D spring is sleeved on the outside of the B insertion rod, and both ends of the D spring are respectively fixedly connected to the D wedge and the B sleeve, the B sleeve is provided with a plurality of B insertion holes at equal intervals along its length direction, and a B pressure plate is fixedly connected to the other end of the B cross bar.

[0017] Furthermore, the A driving member is a C screw, the outside of the C screw is threadedly connected to the supporting slider, and the two ends of the C screw are respectively rotatably connected to the bending table.

[0018] A method for preparing an orthopedic spine surgery connecting rod, which is applicable to the rod bending device of the orthopedic spine surgery connecting rod described above, comprises the following steps:

[0019] S1. Place the connecting rod on the bearing plate so that the length direction of the connecting rod is the same as the length direction of the bending table;

[0020] S2. According to the shape of the connecting rod to be bent, the two pressing wheels are moved along the length direction of the supporting slider by controlling the adjusting component and the limiting component, and the supporting slider is controlled to move by the A driving member to determine the positions of the two pressing wheels in each bending mechanism, so that the connecting line of the pressing wheels in the multiple bending mechanisms forms the shape of the connecting rod to be bent;

[0021] S3, controlling the adjusting component and the limiting component to move the two pressing wheels in each bending mechanism toward each other to bend the connecting rod;

[0022] S4. When it is necessary to fine-tune the bending angle of a certain part of the connecting rod, keep the positions of the two pressure wheels in the bending mechanism on the side of the connecting rod that needs fine-tuning unchanged, control the adjustment component and the limiting component to make the two pressure wheels in the bending mechanism on the other side of the connecting rod that needs fine-tuning move away from the bending rod, and then control the adjustment component and the limiting component to make one of the pressure wheels at the position where the connecting rod needs fine-tuning rotate around the center line axis of the other pressure wheel to complete the fine-tuning of the bending angle of the connecting rod.

[0023] Compared with the prior art, the present invention provides a rod bender for orthopedic spine surgery connecting rod and a preparation method thereof. The two pressing wheels are driven to move along the length direction of the supporting slider by an adjustment component, and the supporting slider is driven to move along the width direction of the bending table by a driving member A, so that the positions of the two pressing wheels can be adjusted. The pressing wheels in the multiple bending mechanisms form the shape of the connecting rod to be bent. The connecting rod is bent and formed by moving the pressing wheels along the length direction of the supporting slider. During the bending and forming, the pressing wheels can rotate around their own axis, so that when the connecting rod is bent and formed, the hard friction force on the connecting rod is reduced, thereby reducing the hard pulling on the connecting rod;

[0024] When the local bending angle of the connecting rod needs to be fine-tuned, two pressure wheels in the bending mechanism on the side of the connecting rod that needs to be fine-tuned are used to clamp and limit one end of the connecting rod. Through the bending mechanism at the part of the connecting rod that needs to be fine-tuned, one of the pressure wheels is rotated around the center axis of the other pressure wheel. The non-revolving pressure wheel can support the part where the bending angle of the connecting rod is fine-tuned, and the other pressure wheel bends the connecting rod, so that the connecting rod can be fine-tuned and bent, which can effectively improve the bending accuracy of the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic diagram of the overall external structure provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a local structure provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a partial cross-sectional structure provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the combination of a fixing member, a sliding block A and a driving member B provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the combination of a support slider, an A slider and a C driving member provided in an embodiment of the present invention;

[0031] Figure 6 The embodiment of the present invention provides Figure 3 A is an enlarged schematic diagram;

[0032] Figure 7 The embodiment of the present invention provides Figure 3 The enlarged schematic diagram of point B in FIG.

[0033] Figure 8 The embodiment of the present invention provides Figure 3 The enlarged schematic diagram of point C in FIG.

[0034] Fig. 9 A schematic diagram of the combination of a B wedge block, an A wedge block, an A cross bar and an A plug rod provided in an embodiment of the present invention;

[0035] Fig.10 A schematic diagram of the combination of a B cross bar, a C wedge block, a D wedge block and a B insertion rod provided in an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 1. Bending table; 2. Loading plate; 3. Support slider; 4. Press wheel; 5. Adjustment assembly; 51. A vertical axis; 52. Fixing member; 521. Slide rail; 522. Clamping member; 523. A screw; 524. A rotating drive member; 53. A slider; 54. B driving member; 541. B vertical axis; 542. B rotating drive member; 55. C driving member; 551. B screw; 552. C rotating drive member; 6. Limiting assembly; 61. A sleeve; 62. B Sleeve; 63, limiting member; 630, B wedge block; 631, A cross bar; 632, A spring; 633, A wedge block; 634, A plug rod; 635, B spring; 636, A socket; 637, A pressure plate; 638, B cross bar; 639, C spring; 6310, C wedge block; 6311, D wedge block; 6312, B plug rod; 6313, D spring; 6314, B socket; 6315, B pressure plate; 7, first guide member; 8, A driving member. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Embodiment 1:

[0040] See also Figures 1 to 10, a rod bender for connecting rods in orthopedic spine surgery, comprising a bending table 1, a bearing plate 2 is fixedly installed on the inner side of the bending table 1 and at both ends in the length direction of the bending table 1, and the bearing plate 2 is used to support the connecting rod;

[0041] A plurality of bending mechanisms are arranged at equal intervals inside the bending table 1 and along its length direction. The bending mechanism includes a supporting slider 3 and two pressing wheels 4. The length direction of the supporting slider 3 is the same as the width direction of the bending table 1. An adjusting component 5 and a limiting component 6 are connected between the two pressing wheels 4. The adjusting component 5 can drive the two pressing wheels 4 to move along the length direction of the supporting slider 3 and make one of the pressing wheels 4 rotate around the center axis of the other pressing wheel 4. The limiting component 6 is used to keep the straight-line distance between the center axes of the two pressing wheels 4 unchanged.

[0042] After the adjustment component 5 drives the two pressing wheels 4 to move along the length direction of the supporting slider 3, the limiting component 6 keeps the straight-line distance between the central axes of the two pressing wheels 4 unchanged, and the adjustment component 5 drives one of the pressing wheels 4 to rotate around the central axis of the other pressing wheel 4;

[0043] One side of the support slider 3 is connected to a first guide member 7 for limiting its movement along the width direction of the bending table 1, and the other side of the support slider 3 is connected to an A driving member 8 for driving its movement.

[0044] When the connecting rod is bent in multiple sections, single-point multiple bending is mostly used. Single-point multiple bending is to move the connecting rod to make it bend multiple times on the bending assembly on the bending machine. This type of bending is inefficient. The connecting rod is also bent once by squeezing or pulling the connecting rod. However, this type of bending will apply a large rigid pulling force to the connecting rod, which will reduce the strength of the connecting rod.

[0045] For this purpose, a plurality of bending mechanisms are arranged at equal intervals. The two pressing wheels 4 are driven to move along the length direction of the support slider 3 by the adjustment component 5, and the support slider 3 is driven to move along the width direction of the bending table 1 by the A driving member 8, so that the positions of the two pressing wheels 4 can be adjusted. The pressing wheels 4 in the plurality of bending mechanisms form the shape of the connecting rod to be bent. The connecting rod is bent and formed by moving the pressing wheels 4 along the length direction of the support slider 3. During the bending and forming, the pressing wheels 4 can rotate around their own axis, so that when the connecting rod is bent and formed, the hard friction force on the connecting rod is reduced, thereby reducing the hard pulling on the connecting rod;

[0046] Since the bending accuracy requirement of the connecting rod is relatively high and the distance between the pressure wheels 4 in two adjacent bending mechanisms is fixed, it is easy to cause the bending angle of the connecting rod to be too large at a certain position. When it is necessary to fine-tune the local bending angle of the connecting rod, the two pressure wheels 4 in the bending mechanism on the side of the connecting rod that needs to be fine-tuned are used to clamp and limit one end of the connecting rod. Through the bending mechanism at the connecting rod where fine-tuning is required, one of the pressure wheels 4 is rotated around the center axis of the other pressure wheel 4, and the non-revolving pressure wheel 4 can support the connecting rod at the fine-tuning position of the bending angle, and the other pressure wheel 4 bends the connecting rod, so that the connecting rod can be fine-tuned and bent, which can effectively improve the bending accuracy of the connecting rod.

[0047] In one embodiment of the present invention, the adjustment assembly 5 includes an A vertical shaft 51, one end of which is rotatably connected to the end of the rotating shaft of the pressure wheel 4, a fixing member 52 for clamping and fixing the A vertical shaft 51 is provided at the bottom end thereof, a B driving member 54 for driving the fixing member 52 to rotate around the axis of the A vertical shaft 51 is connected to one side of the fixing member 52, an A slider 53 is connected to one side of the fixing member 52, a side of the A slider 53 is slidably connected to the supporting slider 3, and a C driving member 55 for driving the A slider 53 to move along the length direction of the supporting slider 3 is connected to one side of the A slider 53;

[0048] During operation, the A slider 53 is driven by the C driving member 55 to move along the length direction of the supporting slider 3. When the fixing member 52 clamps the A vertical axis 51, the movement of the A slider 53 can drive the pressure wheel 4 to move, thereby adjusting the position of the pressure wheel 4 on the supporting slider 3.

[0049] In one embodiment of the present invention, the fixing member 52 includes a slide rail 521, on which two clamping members 522 are symmetrically arranged, and the bottom ends of the clamping members 522 are respectively slidably connected to the slide rail 521, and an A screw 523 is rotatably connected to the slide rail 521, and the A screw 523 is provided with two sections of threads with opposite rotation directions, and the A screw 523 is respectively threadedly connected to the two clamping members 522 through the two sections of threads with opposite rotation directions, and one end of the A screw 523 is connected to an A rotation driving member 524 that drives it to rotate around its own axis;

[0050] In one embodiment of the present invention, the upper end of the clamping member 522 is arranged in an arc shape, and a plurality of bosses are arranged on one side of the inner concave surface of the arc shape to increase the friction force when the clamping member 522 clamps the A vertical shaft 51;

[0051] In one embodiment of the present invention, the A rotary drive member 524 is a motor or a rotary cylinder, the output shaft end of the A rotary drive member 524 is fixedly connected to the A screw rod 523, and the A rotary drive member 524 is fixedly mounted on the slide rail 521;

[0052] During operation, the A rotary driving member 524 drives the A screw rod 523 to rotate, and the A screw rod 523 drives the clamping member 522 to move toward or in the direction, so that the clamping member 522 can clamp and fix the A vertical shaft 51.

[0053] In one embodiment of the present invention, the B driving member 54 includes a B vertical shaft 541 whose top end is rotatably connected to the slide rail 521, and whose bottom end is externally rotatably connected to the A sliding block 53. The central axis of the B vertical shaft 541 is colinear with the central axis of the A vertical shaft 51, and the bottom end of the B vertical shaft 541 is connected to a B rotating driving member 542 that drives it to rotate around its own axis.

[0054] During operation, the B vertical shaft 541 is driven to rotate by the B rotating drive member 542, and the B vertical shaft 541 drives the slide rail 521 to rotate. Therefore, in the same bending mechanism, one of the fixing members 52 can be controlled to clamp the B vertical shaft 541 on one side, while the other fixing member 52 does not clamp the B vertical shaft 541 on one side. Under the restriction of the restriction component 6, the distance between the two pressing wheels 4 is fixed. Therefore, under the drive of the B rotating drive member 542 on the side of the B vertical shaft 541 clamped and fixed by the fixing member 52, one of the pressing wheels 4 can rotate around the central axis of the other pressing wheel 4, thereby fine-tuning the bending of the connecting rod.

[0055] In one embodiment of the present invention, the B rotary drive member 542 is a motor or a rotary cylinder, the output shaft end of the B rotary drive member 542 is fixedly connected to the B vertical shaft 541 , and the B rotary drive member 542 is fixedly mounted on the A slider 53 .

[0056] In one embodiment of the present invention, the C driving member 55 includes a B screw 551, both ends of which are externally rotatably connected to the support slider 3, and the B screw 551 is provided with two sections of threads with opposite rotation directions. The B screw 551 is threadedly connected to the two A sliders 53 through the two sections of threads with opposite rotation directions, and one end of the B screw 551 is connected to a C rotating driving member 552 that drives it to rotate around its own axis;

[0057] In one embodiment of the present invention, the C rotary drive member 552 is a motor or a rotary cylinder, the output shaft end of the C rotary drive member 552 is fixedly connected to the B screw rod 551, and the C rotary drive member 552 is fixedly mounted on the support slider 3;

[0058] During operation, the B screw 551 is driven to rotate by the C rotating drive member 552, and the B screw 551 drives the two A sliders 53 to move toward or in opposite directions along the length of the supporting slider 3. When the supporting slider 3 moves, the A vertical axis 51 is fixed by the fixing member 52 for clamping, so that when the A slider 53 moves, it can drive the pressure wheel 4 to move to adjust the positions of the two pressure wheels 4 on the supporting slider 3.

[0059] In one embodiment of the present invention, the limiting assembly 6 includes an A sleeve 61, one side of the A sleeve 61 is rotatably connected to the rotating shaft of one of the pressing wheels 4, the other side of the A sleeve 61 is fixedly connected to the adjacent A vertical shaft 51, the inner side of the A sleeve 61 is slidably connected with a B sleeve 62, one side of the B sleeve 62 is fixedly connected to the adjacent A vertical shaft 51, the end of the B sleeve 62 is rotatably connected to the rotating shaft of the other pressing wheel 4, and one side of the B sleeve 62 is connected to a limiting member 63 that prevents it from moving along the length direction of the A sleeve 61;

[0060] During operation, the limiting member 63 blocks the movement of the B sleeve 62 relative to the A sleeve 61 , thereby fixing the distance between the central axes of the two pressing wheels 4 .

[0061] In one embodiment of the present invention, the limiting member 63 includes an A blocking member and a B blocking member, wherein the A blocking member includes an A cross bar 631, the outer portion of the A cross bar 631 is slidably connected to the A sleeve 61, the outer portion of the A cross bar 631 is sleeved with an A spring 632, the two ends of the A spring 632 are respectively fixedly connected to the A cross bar 631 and the A sleeve 61, one end of the A cross bar 631 is fixedly connected to an A wedge block 633, one side of the A wedge block 633 is provided with a B wedge block 630, and the top of the B wedge block 630 is fixedly connected to the A plug rod 6 34, the A plug rod 634 is externally connected with the A sleeve 61 for sliding, the A plug rod 634 is externally sleeved with a B spring 635, the two ends of the B spring 635 are respectively fixedly connected with the B wedge block 630 and the A sleeve 61, the A sleeve 61 is provided with a plurality of A insertion holes 636 at equal intervals along its length direction, the other end of the A cross bar 631 is fixedly connected with an A pressure plate 637, and the A pressure plate 637 can be pushed by a clamping member 522 in the fixing member 52 when a clamping member 522 in the fixing member 52 moves to clamp the A vertical shaft 51;

[0062] In one embodiment of the present invention, a groove is provided on the A vertical shaft 51 near the A pressing plate 637, and the size of the groove is sufficient to accommodate the A pressing plate 637;

[0063] In one embodiment of the present invention, the B obstruction member includes a B cross bar 638, the outer portion of the B cross bar 638 is slidably connected to the B sleeve 62, the outer portion of the B cross bar 638 is sleeved with a C spring 639, the two ends of the C spring 639 are respectively fixedly connected to the B cross bar 638 and the B sleeve 62, one end of the B cross bar 638 is fixedly connected to a C wedge block 6310, one side of the C wedge block 6310 is provided with a D wedge block 6311, the top of the D wedge block 6311 is fixedly connected to a B plug rod 6312, and the B plug rod 6312 The outside of the B rod 6312 is slidably connected with the B sleeve 62, and the outside of the B rod 6312 is sleeved with a D spring 6313. The two ends of the D spring 6313 are respectively fixedly connected with the D wedge block 6311 and the B sleeve 62. The B sleeve 62 is provided with a plurality of B insertion holes 6314 at equal intervals along its length direction. The other end of the B cross bar 638 is fixedly connected with a B pressure plate 6315. The B pressure plate 6315 can be pushed by a clamping member 522 in the fixing member 52 when a clamping member 522 in the fixing member 52 moves to clamp the A vertical axis 51.

[0064] During operation, when the clamping member 522 on the fixing member 52 clamps the A vertical shaft 51, the clamping member 522 pushes the A pressure plate 637, the A pressure plate 637 drives the A cross bar 631 to move, the A spring 632 is compressed, the A cross bar 631 drives the A wedge block 633 to move, the A wedge block 633 squeezes and pushes the B wedge block 630, the B spring 635 is stretched, the B wedge block 630 drives the A plug rod 634 to move, so that the A plug rod 634 is separated from the A insertion hole 636;

[0065] When the clamping member 522 on the fixing member 52 clamps the A vertical shaft 51, the clamping member 522 pushes the B pressure plate 6315, the B pressure plate 6315 drives the B cross bar 638 to move, the C spring 639 is compressed, the B cross bar 638 drives the C wedge block 6310 to move, the C wedge block 6310 squeezes and pushes the D wedge block 6311, the B spring 635 is stretched, the D wedge block 6311 drives the B insertion rod 6312 to move, so that the B insertion rod 6312 is separated from the B insertion hole 6314;

[0066] In this way, the obstruction to the relative movement of the B sleeve 62 and the A sleeve 61 is solved. By setting the A obstruction member and the B obstruction member, when the connecting rod is bent and fine-tuned, one of the fixing members 52 releases the clamping of the A vertical axis 51 it clamps, and the other fixing member 52 still maintains the clamping of the A vertical axis 51 it clamps, thereby maintaining the fixing member 52 that clamps the A vertical axis 51 as a fulcrum, so that one of the pressure wheels 4 can rotate around the other pressure wheel 4 and keep the distance between the two pressure wheels 4 unchanged.

[0067] In one embodiment of the present invention, the first guide member 7 is a guide rail, which is fixedly mounted on the bending table 1, and the top of the guide rail is slidably connected to the supporting slider 3;

[0068] In one embodiment of the present invention, the A driving member 8 is a C screw, the outside of the C screw is threadedly connected to the support slider 3, and the two ends of the C screw are respectively rotatably connected to the bending table 1;

[0069] During operation, since the first guide member 7 limits the movement of the supporting slider 3 along the length direction of the bending table 1, the C screw can be rotated, and the C screw drives the supporting slider 3 to move along the width direction of the bending table 1, so that the two pressing wheels 4 can be driven by the supporting slider 3 to move along the width direction of the bending table 1 to adjust the position of the pressing wheels 4.

[0070] Embodiment 2:

[0071] A method for preparing an orthopedic spine surgery connecting rod, which is applicable to the above-mentioned rod bending device for the orthopedic spine surgery connecting rod, comprises the following steps:

[0072] S1. Place the connecting rod on the carrying plate 2 so that the length direction of the connecting rod is the same as the length direction of the bending table 1;

[0073] S2. According to the shape of the connecting rod to be bent, the two pressing wheels 4 are moved along the length direction of the supporting slider 3 by controlling the adjusting component 5 and the limiting component 6, and the supporting slider 3 is controlled to move by the A driving member 8 to determine the positions of the two pressing wheels 4 in each bending mechanism, so that the connecting line of the pressing wheels 4 in the multiple bending mechanisms forms the shape of the connecting rod to be bent;

[0074] S3, then controlling the adjusting component 5 and the limiting component 6 to move the two pressing wheels 4 in each bending mechanism toward each other to bend the connecting rod;

[0075] S4. When it is necessary to fine-tune the bending angle of a certain part of the connecting rod, keep the positions of the two pressure wheels 4 in the bending mechanism on the side of the connecting rod that needs fine-tuning unchanged, control the adjustment component 5 and the limiting component 6 to make the two pressure wheels 4 in the bending mechanism on the other side of the connecting rod that needs fine-tuning move away from the bending rod, and then control the adjustment component 5 and the limiting component 6 to make one of the pressure wheels 4 at the connecting rod that needs fine-tuning rotate around the center line axis of the other pressure wheel 4 to complete the fine-tuning of the bending angle of the connecting rod.

[0076] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rod bender for connecting rods in orthopedic spinal surgery, comprising a bending table (1), characterized in that: A bearing plate (2) is fixedly installed on the inner side of the bending platform (1) and at both ends in the length direction of the bending platform (1), and the bearing plate (2) is used to support the connecting rod; A plurality of bending mechanisms are arranged at equal intervals inside the bending table (1) and along its length direction. The bending mechanisms include a supporting slider (3) and two pressing wheels (4). The length direction of the supporting slider (3) is the same as the width direction of the bending table (1). An adjusting component (5) and a limiting component (6) are connected between the two pressing wheels (4). The adjusting component (5) can drive the two pressing wheels (4) to move along the length direction of the supporting slider (3) and make one of the pressing wheels (4) rotate around the center axis of the other pressing wheel (4). The limiting component (6) is used to keep the straight-line distance between the center axes of the two pressing wheels (4) unchanged. After the adjustment component (5) drives the two pressing wheels (4) to move along the length direction of the supporting slider (3), the limiting component (6) keeps the straight-line distance between the central axes of the two pressing wheels (4) unchanged, and the adjustment component (5) drives one of the pressing wheels (4) to rotate around the central axis of the other pressing wheel (4); The adjusting assembly (5) comprises an A vertical shaft (51) whose one end is rotatably connected to the end of the rotating shaft of the pressure wheel (4); a fixing member (52) for clamping and fixing the A vertical shaft (51) is arranged at the bottom end; a B driving member (54) for driving the fixing member (52) to rotate around the axis of the A vertical shaft (51) is connected to one side of the fixing member (52); an A sliding block (53) is connected to one side of the fixing member (52); a side surface of the A sliding block (53) is slidably connected to the supporting sliding block (3); and a C driving member (55) for driving the A sliding block (53) to move along the length direction of the supporting sliding block (3) is connected to one side of the A sliding block (53); The limiting assembly (6) comprises an A sleeve (61), one side of the A sleeve (61) is rotatably connected to the rotating shaft of one of the pressure wheels (4), the other side of the A sleeve (61) is fixedly connected to the adjacent A vertical shaft (51), the inner side of the A sleeve (61) is slidably connected to a B sleeve (62), one side of the B sleeve (62) is fixedly connected to the adjacent A vertical shaft (51), the end of the B sleeve (62) is rotatably connected to the rotating shaft of the other pressure wheel (4), and one side of the B sleeve (62) is connected to a limiting member (63) that prevents the B sleeve (62) from moving along the length direction of the A sleeve (61); One side of the support slider (3) is connected to a first guide member (7) for limiting its movement along the width direction of the bending platform (1), and the other side of the support slider (3) is connected to an A driving member (8) for driving its movement.

2. The rod bender for connecting rods in orthopedic spine surgery according to claim 1, characterized in that: The fixing member (52) comprises a slide rail (521), two clamping members (522) are symmetrically arranged on the slide rail (521), the bottom ends of the clamping members (522) are respectively slidably connected to the slide rail (521), an A screw rod (523) is rotatably connected to the slide rail (521), the A screw rod (523) is provided with two sections of threads with opposite rotation directions, the A screw rod (523) is respectively threadedly connected to the two clamping members (522) through the two sections of threads with opposite rotation directions, and one end of the A screw rod (523) is connected to an A rotation driving member (524) for driving it to rotate around its own axis.

3. The rod bender for connecting rods in orthopedic spine surgery according to claim 2, characterized in that: The B driving member (54) comprises a B vertical shaft (541) whose top end is rotatably connected to the slide rail (521); the bottom end of the B vertical shaft (541) is externally rotatably connected to the A sliding block (53); the central axis of the B vertical shaft (541) is colinear with the center axis of the A vertical shaft (51); and the bottom end of the B vertical shaft (541) is connected to a B rotating driving member (542) for driving it to rotate around its own axis.

4. The rod bender for connecting rods in orthopedic spine surgery according to claim 1, characterized in that: The C driving member (55) comprises a B screw rod (551), both ends of which are externally connected to the supporting slider (3) for rotation, the B screw rod (551) is provided with two sections of threads with opposite rotation directions, the B screw rod (551) is respectively connected to the two A sliders (53) through the two sections of threads with opposite rotation directions, and one end of the B screw rod (551) is connected to a C rotating driving member (552) for driving it to rotate around its own axis.

5. The rod bender for connecting rods in orthopedic spine surgery according to claim 1, characterized in that: The limiting member (63) includes an A blocking member and a B blocking member, wherein the A blocking member includes an A cross bar (631), the A cross bar (631) is externally slidably connected to the A sleeve (61), an A spring (632) is sleeved on the A cross bar (631), two ends of the A spring (632) are respectively fixedly connected to the A cross bar (631) and the A sleeve (61), one end of the A cross bar (631) is fixedly connected to an A wedge block (633), and one side of the A wedge block (633) is A B wedge block (630) is provided, the top end of the B wedge block (630) is fixedly connected to an A plug rod (634), the A plug rod (634) is sleeved with a B spring (635), the two ends of the B spring (635) are respectively fixedly connected to the B wedge block (630) and the A sleeve (61), the A sleeve (61) is provided with a plurality of A insertion holes (636) at equal intervals along its length direction, and the other end of the A cross bar (631) is fixedly connected to an A pressure plate (637).

6. The rod bender for connecting rods in orthopedic spine surgery according to claim 5, characterized in that: The B blocking member comprises a B cross bar (638), the outer portion of the B cross bar (638) is slidably connected to the B sleeve (62), the outer portion of the B cross bar (638) is sleeved with a C spring (639), the two ends of the C spring (639) are respectively fixedly connected to the B cross bar (638) and the B sleeve (62), one end of the B cross bar (638) is fixedly connected to a C wedge block (6310), and a D wedge block (6311) is provided on one side of the C wedge block (6310), The top of the D wedge block (6311) is fixedly connected to a B plug rod (6312), the outside of the B plug rod (6312) is sleeved with a D spring (6313), the two ends of the D spring (6313) are respectively fixedly connected to the D wedge block (6311) and the B sleeve (62), the B sleeve (62) is provided with a plurality of B insertion holes (6314) at equal intervals along its length direction, and the other end of the B cross bar (638) is fixedly connected to a B pressure plate (6315).

7. The rod bender for connecting rods in orthopedic spine surgery according to claim 1, characterized in that: The A driving member (8) is a C screw rod, the outside of which is threadedly connected to the supporting slider (3), and the two ends of the C screw rod are respectively rotatably connected to the bending table (1).

8. A method for preparing a connecting rod for orthopedic spine surgery, characterized in that: A rod bender for orthopedic spine surgery connecting rod according to any one of claims 1 to 7, comprising the following steps: S1. Place the connecting rod on the carrying plate (2) so that the length direction of the connecting rod is the same as the length direction of the bending table (1); S2, according to the shape of the connecting rod to be bent, the two pressing wheels (4) are moved along the length direction of the supporting slider (3) by controlling the adjusting component (5) and the limiting component (6), and the support slider (3) is controlled to move by the A driving member (8), so as to determine the positions of the two pressing wheels (4) in each bending mechanism, so that the connecting line of the pressing wheels (4) in the multiple bending mechanisms forms the shape of the connecting rod to be bent; S3, then controlling the adjusting component (5) and the limiting component (6) to move the two pressing wheels (4) in each bending mechanism toward each other to bend the connecting rod; S4. When it is necessary to fine-tune the bending angle of a certain part of the connecting rod, the positions of the two pressing wheels (4) in the bending mechanism on the side of the connecting rod that needs to be fine-tuned are kept unchanged, and the adjusting component (5) and the limiting component (6) are controlled to move the two pressing wheels (4) in the bending mechanism on the other side of the connecting rod that needs to be fine-tuned away from the bending rod. Then, the adjusting component (5) and the limiting component (6) are controlled to rotate one of the pressing wheels (4) at the part of the connecting rod that needs to be fine-tuned around the center axis of the other pressing wheel (4), thereby completing the fine-tuning of the bending angle of the connecting rod.

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