Measuring scale based on spinal surgery

Abstract

According to the measuring scale based on the spinal surgery, when the depth of an excision position needs to be measured, the measuring scale based on the spinal surgery is adopted for measurement, the measuring assembly is pushed to move, so that the measuring assembly moves relative to the measuring end and drives the connecting assembly to move, and the connecting assembly moves to drive the reading assembly to move; therefore, the stroke length of the measuring assembly relative to the measuring end is measured. The scale surface is perpendicular to the measuring end, so that the reading can be accurately and quickly carried out by directly lowering the head to enable the sight line to be perpendicular to the scale surface without looking at the head horizontally in the reading process, and the problem of measuring errors caused by sight line errors is avoided. Secondly, since the scale surface is perpendicular to the measuring end, the doctor can complete measurement without squatting, so that the measuring speed is increased; meanwhile, in the measuring process, the surgeon and the first operation assistant can synchronously and clearly read numbers, and the accuracy of the reading result is improved through mutual correction of the two persons.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a measuring ruler based on spinal surgery. Background Art

[0002] Cervical spondylosis is a type of disease that causes a series of clinical symptoms and signs due to cervical disc degeneration or pathological changes in the cervical bony structure that stimulate or compress the spinal cord or nerve roots. Currently, the main surgical approaches for the treatment of cervical spondylosis include anterior approach, posterior approach, and anterior-posterior combined approach. Among them, anterior cervical surgery can directly remove the pathogenic structure and achieve thorough direct decompression, and is widely used in clinical practice. At present, most anterior cervical surgeries, including cervical discectomy, decompression and fusion (ACDF) and cervical corpectomy, decompression and fusion (ACCF), have been proven to be safe and effective. For the treatment of special pathological types of cervical spondylosis (such as ossification of the posterior longitudinal ligament of the cervical spine), Professor Shi Jiangang's team from Shanghai Changzheng Hospital proposed a new anterior cervical decompression and fusion technique, namely anterior cervical ossification complex anterior fusion (ACAF). A large number of studies have shown that this surgical technique has achieved good clinical efficacy in the treatment of ossification of the posterior longitudinal ligament of the cervical spine and has been widely recognized by scholars at home and abroad.

[0003] In clinical practice, ACDF is usually the first choice for cervical spondylosis patients with simple cervical disc herniation and focal ossification of the posterior longitudinal ligament who are refractory to conservative treatment. The surgical feature of ACDF is that it only removes the intervertebral disc and part of the osteophytes on the posterior edge of the vertebral body, without excessive treatment of the vertebral body, achieving decompression while minimizing vertebral damage. However, since ACDF can only perform decompression from the plane of the intervertebral disc, the operating space is limited and the field of view is narrow. If the surgeon needs to measure the depth of the intervertebral space to determine the amount of bone grafting and the size of the fusion device, it is difficult to enter the intervertebral space within the limited surgical field of view and it is difficult to accurately dock the target structure using the surgical measuring ruler currently on the market. The operation is inconvenient and affects the accuracy of the measurement results.

[0004] Compared with ACDF, ACCF obtains a larger decompression space by removing part of the vertebral body. Its technical characteristics are to obtain sufficient surgical space through vertebral resection, directly deal with the compressive objects at the posterior edge of the vertebral body (such as ossified posterior longitudinal ligament), and perform subtotal resection of the vertebral body according to the compression range indicated by preoperative CT and MRI. During the vertebral resection process, the surgeon needs to accurately control the depth and width of the resection to avoid excessive resection that may damage the stability of the cervical spine and affect postoperative recovery. At the same time, the surgeon needs to accurately measure the amount of vertebral body resection to ensure complete resection of the vertebral body and the suitability of the bone graft material. Inaccurate intraoperative measurement may lead to the following problems: (1) The resection depth is too shallow, the diseased tissue cannot be completely removed, and the effect of effective decompression cannot be achieved; (2) The resection is too deep, which may lead to postoperative instability, increase the risk of complications (such as pseudoarthrosis or spinal cord compression), and even affect the postoperative fusion effect. However, in ACCF surgery, due to the resection of part of the vertebral body, the amount of bleeding is large, the surgical area is blurred, and the scale lines of the ruler are difficult to clearly show. When using surgical measuring rulers (steel rulers, vernier calipers) currently on the market for measurement, the surgeon needs to bend over or squat to get the reading as close to the scale line as possible, which takes too much time and the reading may not be accurate. In addition, due to the limitations of the ruler, only the surgeon can vaguely read the scale value during measurement, and other surgical assistants cannot read the value. There is no step for multiple people to calibrate the value, which may result in a large error in the final measurement result.

[0005] ACAF is currently the mainstream surgical procedure for treating complex types of cervical spondylosis such as ossification of the posterior longitudinal ligament of the cervical spine. Its technical features are to remove the bone in front of the vertebral body, groove the vertebral body from the inside of the uncovertebral joint on both sides, use appropriately pre-bent steel plates and screws to separate the vertebral ossification complex from the surrounding bony structure, and move the vertebral ossification complex forward as a whole by suspension and lifting, so as to achieve decompression of the spinal canal without removing the posterior compression material of the vertebral body. Studies have shown that surgeons should pay attention to vertical grooving and vertical lifting during grooving and lifting. The actual lifting distance of the vertebral body will be affected by the curvature of the pre-bent titanium plate. Therefore, it is particularly important to measure the depth of the resected vertebral body and groove and determine the thickness of the prevertebral bone resection during surgery. Before performing ACAF surgery, the surgeon needs to accurately evaluate the size, morphology and range of the diseased vertebral body through imaging examinations (such as CT, MRI, etc.). During the vertebral body resection process, the surgeon should accurately control the range and depth of resection to ensure that the resected vertebral body does not exceed the planned range to maintain the stability of the cervical spine. If the resection depth is too shallow, the diseased tissue may not be completely removed, resulting in recurrence or ineffective relief of nerve compression; while excessive resection may damage the normal vertebral structure, leading to instability and affecting the postoperative fusion effect. However, currently in clinical practice, surgeons mainly use other surgical instruments such as nerve dissectors to replace ruler measurements to evaluate the depth of vertebral resection and the thickness of prevertebral bone resection. In addition, when surgeons need to measure the depth of the groove, the rulers currently on the market cannot enter the groove for accurate measurement due to the influence of width or thickness. Surgeons can only estimate the depth of the groove based on clinical experience. Therefore, in ACAF surgery, surgeons urgently need a spinal measuring ruler with a small appearance, accurate measurement, and easy reading to measure the depth of the groove and vertebral resection. Accurate measurement helps reduce complications, ensure the success of the operation and optimize postoperative results.

[0006] In addition, the current treatment for spinal tumors is a comprehensive treatment method that combines surgery, radiotherapy, chemotherapy, etc. However, surgery becomes the main treatment method after pathological fractures, spinal cord compression, spinal instability, radicular pain, etc. occur. After spinal tumor resection, in order to maintain the stability of the spine, it is usually necessary to reconstruct the vertebrae through internal fixation (such as metal implants, artificial vertebrae or bone transplants) to ensure the normal function and range of motion of the spine after surgery. When performing vertebral reconstruction, it is essential to accurately measure the depth of vertebral resection, which is mainly reflected in the following aspects: (1) Ensure complete removal of the tumor: The surgeon needs to accurately measure the resection depth to ensure that the tumor is completely removed to avoid tumor residue affecting postoperative recovery or recurrence; (2) Ensure the stability of vertebral reconstruction: When using artificial vertebrae or bone transplants for vertebral reconstruction after surgery, it is necessary to ensure the compatibility between the implant or bone graft and the original vertebra. If the resection depth is not accurate, the size of the implant may not be appropriate, resulting in loose fixation, which will affect the stability of the spine; (3) Avoid excessive resection: Excessive resection depth may cause spinal instability, damage adjacent tissues or neural structures, and affect postoperative functional recovery; (4) Determine the appropriate position of bone grafts or internal fixation materials: For the selection of bone grafts or internal fixation devices, measuring the depth of the vertebral body is crucial. Through accurate measurement, the appropriate amount of bone grafts and length of internal fixation materials can be selected to avoid implants that are too long or too short, thereby ensuring the effectiveness of the surgery. However, the spinal measuring rulers currently on the market are difficult to achieve fast, effective, and accurate measurements during spinal tumor surgery.

[0007] In summary, ruler measurement is indispensable in all kinds of spinal surgery, and accurate ruler measurement is one of the key factors to ensure the success of the operation and the recovery of the patient. Accurate and rapid measurement can significantly improve the accuracy of the operation, improve the efficiency and safety of the operation, shorten the operation time, and reduce intraoperative complications. Therefore, an innovative spinal measuring ruler is urgently needed in spinal surgery with the following characteristics: 1. Easy to operate, the surgeon does not need to bend over or lower his head, and can measure quickly and accurately under direct vision; 2. It can be proofread in multiple ways, the surgical assistant can read the value at the same time, and multiple surgeons can proofread the reading at the same time to reduce measurement and reading errors; 3. It is highly flexible, the ruler is small in shape, and it is easy to operate in a limited space, which is suitable for the precise measurement needs in various spinal surgical operations. This spinal measuring ruler will greatly improve the efficiency and accuracy of the operation and reduce the risk of the operation. Summary of the invention

[0008] In view of this, it is necessary to provide a measuring ruler based on spinal surgery to solve the above problems.

[0009] The embodiment of the present application provides a measuring ruler based on spinal surgery, comprising:

[0010] A housing having a reading end and a measuring end, wherein the reading end has a scale surface, and the scale surface is perpendicular to the measuring end;

[0011] A reading component, disposed at the reading end and pointing to the scale on the scale surface;

[0012] A measuring component, disposed on the measuring end;

[0013] A connecting component, both ends of which are respectively connected to the reading component and the measuring component in a transmission manner;

[0014] The measuring component moves to drive the reading component to move on the scale surface to indicate the stroke length of the measuring component relative to the measuring end.

[0015] In at least one embodiment of the present application, the connection component includes:

[0016] A first rotating gear, one end of which is meshed and connected with the measuring component;

[0017] A second rotating gear, one end of which is meshed and connected with the reading component;

[0018] The connecting belt is sleeved outside the first rotating gear and the second rotating gear, and is meshed and connected with the first rotating gear and the second rotating gear respectively.

[0019] In at least one embodiment of the present application, the first rotating gear is provided with a first meshing portion and a second meshing portion coaxially arranged with the first meshing portion;

[0020] The measuring assembly comprises:

[0021] The measuring member is provided with a first rack portion, wherein the first rack portion is meshedly connected with the first meshing portion;

[0022] The measuring end is provided with a movable cavity, and the measuring piece is movably accommodated in the movable cavity;

[0023] The second meshing portion is meshedly connected with the connecting belt;

[0024] The measuring piece is adjusted so that it extends out of the movable cavity, and at the same time drives the connecting component to move, thereby driving the reading component to move on the scale surface to indicate the stroke length of the measuring component relative to the measuring end.

[0025] In at least one embodiment of the present application, the measuring member is provided with a receiving groove, the first rack portion is provided on a side wall of the receiving groove, the first rotating gear is located in the receiving groove, and the first rotating gear is rotatably connected to the housing;

[0026] The measuring end is provided with a guide groove communicating with the active cavity, and the length directions of the guide groove and the active cavity are both arranged along the length direction of the measuring end;

[0027] The measuring member is provided with a pushing portion, and the pushing portion passes through the active cavity and the guide groove and extends to the outside;

[0028] One end of the connecting belt is arranged in the receiving groove, and the other end extends to the reading end.

[0029] In at least one embodiment of the present application, the reading end is provided with a slide groove communicating with the active cavity;

[0030] The reading component includes:

[0031] A first reading member is slidably disposed in the slide groove;

[0032] A second reading member is slidably disposed in the slide groove;

[0033] The connection component also includes:

[0034] A first connecting gear, disposed in the slide slot, and meshing with the first reading member and the second rotating gear respectively;

[0035] A second connecting gear, disposed in the slide slot, and meshing with the second reading member and the second rotating gear respectively;

[0036] Wherein, the second rotating gear drives the first connecting gear and the second connecting gear to rotate, so as to drive the first reading member and the second reading member to slide in the slide groove to point to the scale on the scale surface.

[0037] In at least one embodiment of the present application, a second rack portion is provided on the first reading member;

[0038] The first connecting gear comprises:

[0039] A third meshing portion, meshingly connected with the second rotating gear;

[0040] The fourth meshing portion is coaxially arranged with the third meshing portion, and the fourth meshing portion is meshingly connected with the second rack portion to push the first reading member to slide in the slide groove.

[0041] In at least one embodiment of the present application, a third rack portion is provided on the second reading member;

[0042] The second connecting gear comprises:

[0043] a fifth meshing portion, meshingly connected with the second rotating gear;

[0044] The sixth meshing portion is coaxially arranged with the fifth meshing portion, and the sixth meshing portion is meshingly connected with the third rack portion to push the second reading member to slide in the slide groove.

[0045] In at least one embodiment of the present application, the first connecting gear and the second connecting gear are respectively located on both sides of the second rotating gear;

[0046] The fourth meshing portion, the sixth meshing portion and the first meshing portion have the same shape and size.

[0047] In at least one embodiment of the present application, a 0 scale line is set in the middle of the scale surface, and two measurement scale areas are equidistantly set from the 0 scale line to both ends, and the first reading element and the second reading element point to the two measurement scale areas respectively.

[0048] In at least one embodiment of the present application, a slot portion is provided on the inner wall of the active cavity;

[0049] The measuring component also includes:

[0050] An abutment member, having an abutment end at one end and a clamping portion at the other end;

[0051] An elastic member, one end of which abuts against the abutment end;

[0052] A groove is formed at one end of the measuring member away from the reading end, and the other end of the elastic member abuts against the groove;

[0053] The measuring member is provided with a communication groove, one end of which is connected to the groove, and the other end of which is connected to the active cavity;

[0054] One end of the engaging portion passes through the groove and the communicating groove and extends into the active cavity;

[0055] The outer peripheral surface of the measuring piece is provided with a guide plate;

[0056] The elastic member is in contact with the outside to drive the clamping portion to abut against the guide plate, so that the clamping portion is deformed and the clamping portion is clamped with the clamping groove portion.

[0057] The implementation of the spinal surgery-based measuring ruler of this embodiment will have at least the following beneficial effects:

[0058] The spinal surgery-based measuring ruler provided above is used for measurement when it is necessary to measure the resection depth of the resection position. The measuring ruler based on spinal surgery is used to push the measuring component to move, so that the measuring component moves relative to the measuring end, driving the connecting component to move, and the movement of the connecting component drives the reading component to move, so as to measure the stroke length of the measuring component relative to the measuring end.

[0059] Since the scale surface is perpendicular to the measuring end, there is no need to look straight ahead during the reading process. You can simply lower your head and make your line of sight perpendicular to the scale surface to accurately and quickly read the value, thus avoiding errors caused by line of sight errors.

[0060] Secondly, since the scale surface is perpendicular to the measuring end, the doctor can complete the measurement without squatting, which increases the measurement speed. At the same time, during the measurement process, the surgeon's assistant can also see the readings directly and clearly at the same time. Mutual correction between the two can reduce the error caused by the readings.

[0061] Third, we designed a baffle on the side wall of the ruler housing. During use, the baffle only needs to fit the surface of the groove or vertebra to be measured, which means that the ruler is now on the surface of the groove and the ruler scale is at 0. During use, the surgeon does not need to deliberately calibrate whether the 0 scale line is flush with the surface of the element to be measured, which shortens the measurement time and improves the accuracy of the measurement value.

[0062] Finally, the spinal measuring ruler also avoids the situation in which the vertebrae are removed or the grooves are opened too shallowly or too deeply during spinal surgery due to inaccurate measurement results, resulting in insufficient decompression due to insufficient resection or damage to the spinal cord or blood vessels due to excessive resection, thereby reducing the incidence of intraoperative complications and improving surgical results. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 A diagram of the structure of a measuring ruler based on spinal surgery;

[0064] Figure 2 for Figure 1 Exploded view of a spinal surgery-based measuring ruler;

[0065] Figure 3 for Figure 2 Schematic diagram of the structure of the measuring part;

[0066] Figure 4 for Figure 2 A structural diagram of the first connecting gear;

[0067] Figure 5 for Figure 2 The structural diagram of the second connecting gear;

[0068] Figure 6 A cross-sectional view of the initial state of the measuring ruler based on spinal surgery;

[0069] Figure 7 for Figure 6 A schematic diagram of the local area in the middle;

[0070] Figure 8 for Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0071] Fig. 9 A cross-sectional view of a measuring ruler in use (when engaged) for spinal surgery;

[0072] Fig.10 for Fig. 9 A schematic diagram of the local area at C in the middle;

[0073] Fig.11 for Fig. 9 A partial enlarged schematic diagram of point D in the middle.

[0074] Main component symbols

[0075] 100. Measurement scale based on spinal surgery;

[0076] 110, housing; 111, reading end; 112, measuring end; 111a, scale surface; 112a, movable cavity; 112b, guide groove; 111b, slide groove; 111c, measuring scale area; 112c, card slot portion;

[0077] 120, reading assembly; 121, first reading member; 1211, second rack portion; 122, second reading member; 1221, third rack portion; 123, horizontal measurement portion;

[0078] 130, measuring assembly; 131, measuring member; 1311, first rack portion; 131a, receiving groove; 1312, pushing portion; 132, abutting member; 1321, abutting end; 1322, engaging portion; 133, elastic member; 131b, groove; 131c, connecting groove; 134, guide plate;

[0079] 140. Connecting assembly; 141. First rotating gear; 1411. First meshing portion; 1412. Second meshing portion; 142. Second rotating gear; 143. Connecting belt; 144. First connecting gear; 145. Second connecting gear; 1441. Third meshing portion; 1442. Fourth meshing portion; 1451. Fifth meshing portion; 1452. Sixth meshing portion. DETAILED DESCRIPTION

[0080] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0081] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0082] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0083] The embodiment of the present application provides a measuring ruler 100 based on spinal surgery, comprising:

[0084] The housing 110 has a reading end 111 and a measuring end 112, wherein the reading end 111 has a scale surface 111a, and the scale surface 111a is perpendicular to the measuring end 112;

[0085] A reading component 120 is disposed at the reading end 111 and points to the scale on the scale surface 111a;

[0086] A measuring component 130, disposed on the measuring end 112;

[0087] A connecting component 140, two ends of which are respectively connected to the reading component 120 and the measuring component 130;

[0088] The measuring component 130 moves to drive the reading component 120 to move on the scale surface 111 a to indicate the stroke length of the measuring component 130 relative to the measuring end 112 .

[0089] Embodiment 1:

[0090] Please refer to Figure 1-Figure 4 In this embodiment, when it is necessary to measure the resection depth of the resection position, a spinal surgery-based measuring ruler 100 is used for measurement, and the measuring component 130 is pushed to move, so that the measuring component 130 moves relative to the measuring end 112, driving the connecting component 140 to move, and the movement of the connecting component 140 drives the reading component 120 to move, so as to measure the stroke length of the measuring component 130 relative to the measuring end 112.

[0091] Since the scale surface 111a is perpendicular to the measuring end 112, during the reading process, there is no need to look straight ahead, and the reading can be accurately and quickly performed by simply lowering the head and making the line of sight perpendicular to the scale surface 111a, thereby avoiding errors caused by line of sight errors.

[0092] Secondly, since the scale surface 111a is perpendicular to the measuring end 112, the doctor can complete the measurement without squatting, thereby increasing the measurement speed. At the same time, during the measurement process, the surgeon's assistant can also directly and clearly see the readings simultaneously, and mutual correction between the two can reduce the error caused by the readings.

[0093] Third, we designed a baffle on the side wall of the ruler housing. During use, the baffle only needs to fit the surface of the groove or vertebra to be measured, which means that the ruler is now on the surface of the groove and the ruler scale is at 0. During use, the surgeon does not need to deliberately calibrate whether the 0 scale line is flush with the surface of the element to be measured, which shortens the measurement time and improves the accuracy of the measurement value.

[0094] Finally, the spinal measuring ruler also avoids the situation in which the vertebrae are removed or the grooves are opened too shallowly or too deeply during spinal surgery due to inaccurate measurement results, resulting in insufficient decompression due to insufficient resection or damage to the spinal cord or blood vessels due to excessive resection, thereby reducing the incidence of intraoperative complications and improving surgical results.

[0095] It should be noted that the housing 110 is roughly in a “T”-shaped structure.

[0096] The scale surface 111a is a plane on the side away from the measuring end 112. The measuring end 112 is the lower half of the "T"-shaped structure (similar to "|"). The shape of the reading end 111 is roughly the upper half of the "T"-shaped structure (similar to "-").

[0097] In at least one embodiment of the present application, the connection component 140 includes:

[0098] A first rotating gear 141, one end of which is meshed and connected with the measuring component 130;

[0099] A second rotating gear 142, one end of which is meshed and connected with the reading component 120;

[0100] The connection belt 143 is sleeved outside the first rotating gear 141 and the second rotating gear 142 , and is meshed and connected with the first rotating gear 141 and the second rotating gear 142 , respectively.

[0101] In at least one embodiment of the present application, the first rotating gear 141 is provided with a first meshing portion 1411 and a second meshing portion 1412 coaxially arranged with the first meshing portion 1411;

[0102] The measuring component 130 includes:

[0103] The measuring member 131 is provided with a first rack portion 1311, and the first rack portion 1311 is meshedly connected with the first meshing portion 1411;

[0104] The measuring end 112 is provided with an active cavity 112a, and the measuring member 131 is movably accommodated in the active cavity 112a;

[0105] The second meshing portion 1412 is meshed and connected with the connecting belt 143;

[0106] The measuring member 131 is adjusted so that it extends out of the movable cavity 112a, and at the same time drives the connecting component 140 to move, thereby driving the reading component 120 to move on the scale surface 111a to indicate the stroke length of the measuring component 130 relative to the measuring end 112.

[0107] In at least one embodiment of the present application, the measuring member 131 is provided with a receiving groove 131a, the first rack portion 1311 is provided on a side wall of the receiving groove 131a, the first rotating gear 141 is located in the receiving groove 131a, and the first rotating gear 141 is rotatably connected to the housing 110;

[0108] The measuring end 112 is provided with a guide groove 112b communicating with the active cavity 112a, and the length directions of the guide groove 112b and the active cavity 112a are both arranged along the length direction of the measuring end 112;

[0109] The measuring member 131 is provided with a pushing portion 1312 , and the pushing portion 1312 penetrates the active cavity 112 a and the guide groove 112 b and extends to the outside;

[0110] One end of the connecting belt 143 is disposed in the receiving groove 131 a , and the other end extends to the reading end 111 .

[0111] In at least one embodiment of the present application, the reading end 111 is provided with a slide groove 111b communicating with the active cavity 112a;

[0112] The reading component 120 includes:

[0113] The first reading member 121 is slidably disposed in the slide groove 111b;

[0114] The second reading member 122 is slidably disposed in the slide groove 111b;

[0115] The connection component 140 further includes:

[0116] A first connecting gear 144 is disposed in the slide slot 111b and is meshed with the first reading member 121 and the second rotating gear 142 respectively;

[0117] A second connecting gear 145 is disposed in the slide slot 111b and is meshed with the second reading member 122 and the second rotating gear 142 respectively;

[0118] The second rotating gear 142 drives the first connecting gear 144 and the second connecting gear 145 to rotate, so as to drive the first reading member 121 and the second reading member 122 to slide in the slide groove 111b to point to the scale on the scale surface 111a.

[0119] In at least one embodiment of the present application, the first reading member 121 is provided with a second rack portion 1211;

[0120] The first connecting gear 144 includes:

[0121] The third meshing portion 1441 is meshed and connected with the second rotating gear 142;

[0122] The fourth meshing portion 1442 is coaxially arranged with the third meshing portion 1441, and the fourth meshing portion 1442 is meshingly connected with the second rack portion 1211 to push the first reading member 121 to slide in the slide groove 111b.

[0123] In at least one embodiment of the present application, the second reading member 122 is provided with a third rack portion 1221;

[0124] The second connecting gear 145 includes:

[0125] The fifth meshing portion 1451 is meshed and connected with the second rotating gear 142;

[0126] The sixth meshing portion 1452 is coaxially arranged with the fifth meshing portion 1451, and the sixth meshing portion 1452 is meshingly connected with the third rack portion 1221 to push the second reading member 122 to slide in the slide groove 111b.

[0127] In at least one embodiment of the present application, the first connecting gear 144 and the second connecting gear 145 are respectively located on both sides of the second rotating gear 142;

[0128] The fourth engaging portion 1442 , the sixth engaging portion 1452 and the first engaging portion 1411 have the same shape and size.

[0129] In at least one embodiment of the present application, a 0 scale line is set in the middle of the scale surface 111a, and two measurement scale areas 111c are equidistantly set from the 0 scale line to both ends, and the first reading element 121 and the second reading element 122 point to the two measurement scale areas 111c respectively.

[0130] Embodiment 2:

[0131] Please refer to Figure 1-Figure 11 In this embodiment, during measurement, the pushing portion 1312 is pushed along the length direction of the measuring end 112. At this time, the pushing portion 1312 moves in the guide groove 112b, thereby driving the measuring member 131 to move in the movable cavity 112a along the length direction of the measuring end 112 in a direction away from the reading component 120.

[0132] Since the first rack portion 1311 is meshedly connected with the first meshing portion 1411, the first rack portion 1311 pushes the first meshing portion 1411 to rotate around its axis, the first meshing portion 1411 and the second meshing portion 1412 are coaxially arranged, so that the second meshing portion 1412 rotates synchronously, and the second meshing portion 1412 is meshedly connected with the connecting belt 143, so that the connecting belt 143 rotates, and since the connecting belt 143 is meshedly connected with the second rotating gear 142, the rotation of the connecting belt 143 drives the second rotating gear 142 to rotate.

[0133] Thereby, the second rotating gear 142 is caused to rotate around its axis. Since the third meshing portion 1441 and the fifth meshing portion 1451 are both meshingly connected to the second rotating gear 142, the rotation of the second rotating gear 142 simultaneously drives the third meshing portion 1441 and the fifth meshing portion 1451 to rotate. Since the first connecting gear 144 and the second connecting gear 145 are respectively located on both sides of the second rotating gear 142, during the rotation of the second rotating gear 142, the first connecting gear 144 and the second connecting gear 145 are driven to rotate, and the rotation directions are opposite.

[0134] The first connecting gear 144 is meshedly connected with the second rack portion 1211 through the fourth meshing portion 1442 to push the first reading member 121 to slide in the slide groove 111b, and the second connecting gear 145 is meshedly connected with the third rack portion 1221 through the sixth meshing portion 1452 to push the second reading member 122 to slide in the slide groove 111b, so that the first reading member 121 and the second reading member 122 slide away from each other, and the first reading member 121 and the second reading member 122 move respectively in the direction away from the 0 scale line in the two measuring scale areas 111c to measure the distance moved by the measuring component 130 relative to the measuring end 112.

[0135] During the reading process, the surgeon and the first surgical assistant can respectively read the scales pointed to by the first reading piece 121 and the second reading piece 122 in the two measuring scale areas 111c, so as to perform readings and verifications simultaneously, thereby improving the reliability of the final reading results and avoiding errors in the measurement results due to the surgeon's personal erroneous readings, thereby avoiding adverse consequences of the operation due to inaccurate reading results.

[0136] It should be noted that, in the present embodiment, in the initial state, the first reading member 121 and the second reading member 122 are both at the 0 scale line. During the measurement process, as the measuring component 130 moves, the connecting component 140 is driven to move, so that the first reading member 121 and the second reading member 122 move away from the 0 scale line to measure the movement stroke of the measuring component 130. In other embodiments, the 0 scale line can be set at both ends, and the first reading member 121 and the second reading member 122 are close to each other for measurement.

[0137] It should be further explained that, during use, the baffle is attached to the surface of the vertebral body or the groove at the resection position, and the position of the baffle at this time is the position of the 0 scale line at the measuring end.

[0138] It should be further explained that, in this embodiment, in the initial state, the end of the measuring member 131 away from the reading assembly 120 is flush with the end surface of the measuring end 112 .

[0139] It should be further explained that since the fourth meshing portion 1442, the sixth meshing portion 1452 and the first meshing portion 1411 have the same shape and size, when the measuring member 131 moves, the first reading member 121, the second reading member 122 and the measuring member 131 have the same speed and the same movement stroke, so as to ensure the accuracy of the measurement results and avoid measurement errors caused by different gear modules.

[0140] It should be noted that the slide groove 111b is a rectangular groove, and the length direction of the slide groove 111b is perpendicular to the measuring end 112. The movable cavity 112a is a cylindrical channel. The guide groove 112b is a rectangular through groove, and its length direction is arranged along the length direction of the measuring end 112. In this embodiment, there are two parallel guide grooves 112b. The card slot portion 112c is a plurality of card slots, and is equidistantly arranged along the length direction of the measuring end 112.

[0141] The first reading member 121 and the second reading member 122 are of the same shape and size. The first reading member 121 is composed of a long strip plate with a rack on one side and one end of the other side protruding to the outside to form a pointer shape with two conical ends.

[0142] The measuring member 131 is roughly a rectangular bar, and the meshing teeth of the first rack portion 1311 are the same as those of the second rack portion 1211 and the third rack portion 1221. The receiving groove 131a is a groove formed by the end surface of the measuring member 131 close to the measuring assembly 130, which is concave downward along the length direction of the measuring end 112, forming an open groove on both sides and the top surface. The pushing portion 1312 is roughly a "U"-shaped structure; and two guide grooves 112b are respectively passed through the two ends. The abutting end 1321 is roughly a rectangular block. The clamping portion 1322 is roughly a vertical plate at one end, and a clamping block structure protruding away from the end of the measuring member 131 is provided at the other end. The elastic member 133 is a spring. The groove 131b is a groove formed by the end of the measuring member 131 close to the abutting member 132 being concave inward. The connecting groove 131c is a through groove opened on the side wall of the groove 131b. The guide plate 134 is a convex plate of a trapezoidal structure, and its small end is arranged close to the locking portion 1322, so that when the locking portion 1322 abuts against the guide plate 134, the guide plate 134 can generate a force on the locking portion 1322 in a direction away from the measuring piece 131, so that the locking portion 1322 bends along a direction close to the slot portion 112c to be locked in the slot portion 112c.

[0143] The first rotating gear 141 is a two-stage gear, and the first rotating gear 141 is rotatably connected to the housing 110 via a circular shaft.

[0144] The first meshing portion 1411 is a gear portion, and the second meshing portion 1412 is a gear portion, and both are spur gears, and their sizes may be different, but the angular velocities need to be the same.

[0145] The second rotating gear 142 is a spur gear and is rotatably connected to the housing 110 via a circular shaft.

[0146] The connecting belt 143 is an endless belt with teeth and grooves on the inner ring.

[0147] The first connecting gear 144 has the same shape as the first rotating gear 141 and is rotatably connected to the housing 110 via a circular shaft.

[0148] The second connecting gear 145 has the same shape as the first rotating gear 141 and is rotatably connected to the housing 110 via a circular shaft.

[0149] The first connecting gear 144 and the second connecting gear 145 are arranged in mirror symmetry with the center of the second rotating gear 142 as a point.

[0150] The third meshing portion 1441 , the fourth meshing portion 1442 , the fifth meshing portion 1451 , and the sixth meshing portion 1452 are all spur gears.

[0151] The reading end is provided with a horizontal measuring part 123. When measuring, the reading end is first leveled by the horizontal measuring part 123 to make the reading end in a horizontal state, and then the measurement is performed to ensure the accuracy of the measurement.

[0152] It should be noted that the horizontal measurement part 123 is a horizontal liquid droplet with an arc surface on the outside. When the horizontal liquid droplet is in the center of the arc surface, the reading end is in a horizontal state.

[0153] In at least one embodiment of the present application, a slot portion 112c is provided on the inner wall of the active cavity 112a;

[0154] The measuring component 130 further includes:

[0155] The abutment member 132 has an abutment end 1321 at one end and a clamping portion 1322 at the other end;

[0156] An elastic member 133, one end of which abuts against the end of the abutting member 132;

[0157] A groove 131 b is formed at one end of the measuring member 131 away from the reading end 111 , and the other end of the elastic member 133 abuts against the groove 131 b ;

[0158] The measuring member 131 is provided with a connecting groove 131c, one end of the connecting groove 131c is connected to the groove 131b, and the other end of the connecting groove 131c is connected to the active cavity 112a;

[0159] One end of the engaging portion 1322 passes through the groove 131b and the communicating groove 131c and extends into the active cavity 112a;

[0160] The outer circumference of the measuring member 131 is provided with a guide plate 134;

[0161] The elastic member 133 contacts the outside to drive the engaging portion 1322 to contact the guide plate 134 , so that the engaging portion 1322 is deformed and engaged with the slot 112 c .

[0162] Please refer to Figure 1-Figure 6 In this embodiment, during measurement, the pushing portion 1312 is pushed along the length direction of the measuring end 112. At this time, the pushing portion 1312 moves in the guide groove 112b, thereby driving the measuring member 131 to move in the movable cavity 112a along the length direction of the measuring end 112 in a direction away from the reading component 120.

[0163] At the same time, the abutting member 132 and the elastic member 133 are driven to move.

[0164] Since the first rack portion 1311 is meshedly connected with the first meshing portion 1411, the first rack portion 1311 pushes the first meshing portion 1411 to rotate around its axis, the first meshing portion 1411 and the second meshing portion 1412 are coaxially arranged, so that the second meshing portion 1412 rotates synchronously, and the second meshing portion 1412 is meshedly connected with the connecting belt 143, so that the connecting belt 143 rotates, and since the connecting belt 143 is meshedly connected with the second rotating gear 142, the rotation of the connecting belt 143 drives the second rotating gear 142 to rotate.

[0165] Thereby, the second rotating gear 142 is caused to rotate around its axis. Since the third meshing portion 1441 and the fifth meshing portion 1451 are both meshingly connected to the second rotating gear 142, the rotation of the second rotating gear 142 simultaneously drives the third meshing portion 1441 and the fifth meshing portion 1451 to rotate. Since the first connecting gear 144 and the second connecting gear 145 are respectively located on both sides of the second rotating gear 142, during the rotation of the second rotating gear 142, the first connecting gear 144 and the second connecting gear 145 are driven to rotate, and the rotation directions are opposite.

[0166] The first connecting gear 144 is meshedly connected with the second rack portion 1211 through the fourth meshing portion 1442 to push the first reading member 121 to slide in the slide groove 111b, and the second connecting gear 145 is meshedly connected with the third rack portion 1221 through the sixth meshing portion 1452 to push the second reading member 122 to slide in the slide groove 111b, so that the first reading member 121 and the second reading member 122 slide away from each other, and the first reading member 121 and the second reading member 122 move respectively in the direction away from the 0 scale line in the two measuring scale areas 111c to measure the distance moved by the measuring component 130 relative to the measuring end 112.

[0167] When the abutting end 1321 abuts against the cutting surface of the spine, the elastic member 133 is compressed under the action of the abutting force to shorten the distance between the abutting end 1321 and the measuring member 131. At this time, the doctor pushes the pushing portion 1312 to continue to move away from the reading component 120. When the abutting end 1321 abuts against the measuring member 131, the engaging portion 1322 abuts against the inclined surface of the guide plate 134, so that the engaging portion 1322 is deformed in the direction away from the measuring member 131. The engaging portion 1322 engages with the slot at the slot portion 112c to fix the abutting member 132, so that the measuring member 131 cannot continue to move downward. At this time, the surgeon and the first assistant perform readings through the first reading member 121 and the second reading member 122 to read the distance moved by the measuring component 130 to ensure the accuracy of the movement.

[0168] Since the engaging portion 1322 is engaged with the engaging groove portion 112c, the cutting depth can be measured more accurately to ensure a more precise measurement result, avoid the problem of limited lifting effect due to insufficient spinal resection, and improve the success rate of the operation.

[0169] Secondly, the measuring ruler based on spinal surgery can also be used to measure the resection depth of osteophytes at the posterior edge of the intervertebral disc and part of the vertebral body during ACDF surgery, so as to achieve precise resection and achieve the best decompression effect.

[0170] The measuring ruler based on spinal surgery can also be used to measure the depth of bone resection in the anterior part of the vertebral body during ACAF surgery to achieve a precise lifting effect.

[0171] The measuring tape used in spinal surgery can also be used in ACCF surgery to measure the depth of partial vertebral resection to obtain an accurate reading.

[0172] It should be further explained that the measurement methods in ACDF, ACCF, and ACAF can be adapted according to the operating environment and situation to increase the applicability of the measurement ruler based on spinal surgery. The operating principles are the same.

[0173] It should be noted that the existing measuring tools are not provided with an abutment locking structure. Since there is a force when using a vernier caliper during the measurement process, the movable part of the caliper will move further under the action of the force during the measurement process, which will cause a small error. When very precise measurement is required, it can only be adjusted little by little or repeatedly to make the measurement result accurate.

[0174] In this embodiment, the engaging mechanism is triggered by the abutting member 132 so that the abutting member 132 and the measuring member 131 are locked when they abut against each other, thereby avoiding the problem of affecting the measurement accuracy due to the existence of the acting force.

[0175] It should be further explained that after the measurement is completed, the elastic member 133 can push the abutting end 1321 to move away from the measuring member 131, thereby disengaging the engaging portion 1322 from the guide plate 134 and disengaging the engaging portion 1322 from the slot portion 112c.

[0176] In this embodiment, the end of the measuring piece 131 away from the reading end 111 is completely accommodated in the movable cavity 112a, and the distance from the end of the measuring piece 131 close to the abutting piece 132 to the abutting end 1321 is equal to the thickness of the abutting end 1321 (that is, the distance between the end face of the abutting end 1321 close to the measuring piece 131 and the end face of the abutting end 1321 away from the measuring piece 131, the thickness is a), so as to ensure the accuracy of the measurement.

[0177] It should be further explained that a baffle is provided at the end of the measuring end 112 away from the reading end. When in use, the baffle can be pressed against the surface of the element to be measured during surgery (vertebral body, intervertebral space or vertebral body groove), which means that the measuring end of the ruler is flush with the element to be measured at this moment, and the scale line of the ruler is at 0. Therefore, the surgeon does not need to deliberately observe whether the ruler is flush with the surface of the measuring element during measurement, thereby improving the efficiency of measurement and the accuracy of the results.

[0178] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A measuring ruler based on spinal surgery, characterized in that: include: A housing having a reading end and a measuring end, wherein the reading end has a scale surface, and the scale surface is perpendicular to the measuring end; A reading component, disposed at the reading end and pointing to the scale on the scale surface; A measuring component, disposed on the measuring end; A connecting component, both ends of which are respectively connected to the reading component and the measuring component in a transmission manner; The measuring component moves to drive the reading component to move on the scale surface to indicate the stroke length of the measuring component relative to the measuring end.

2. The spinal surgery-based measuring ruler according to claim 1, characterized in that: The connection component comprises: A first rotating gear, one end of which is meshed and connected with the measuring component; A second rotating gear, one end of which is meshed and connected with the reading component; The connecting belt is sleeved outside the first rotating gear and the second rotating gear, and is meshed and connected with the first rotating gear and the second rotating gear respectively.

3. The spinal surgery-based measuring ruler according to claim 2, characterized in that: The first rotating gear is provided with a first meshing portion and a second meshing portion coaxially arranged with the first meshing portion; The measuring assembly comprises: The measuring member is provided with a first rack portion, wherein the first rack portion is meshedly connected with the first meshing portion; The measuring end is provided with a movable cavity, and the measuring piece is movably accommodated in the movable cavity; The second meshing portion is meshedly connected with the connecting belt; The measuring piece is adjusted so that it extends out of the movable cavity, and at the same time drives the connecting component to move, thereby driving the reading component to move on the scale surface to indicate the stroke length of the measuring component relative to the measuring end.

4. The spinal surgery-based measuring ruler according to claim 3, characterized in that: The measuring member is provided with a receiving groove, the first rack portion is provided on a side wall of the receiving groove, the first rotating gear is located in the receiving groove, and the first rotating gear is rotatably connected to the housing; The measuring end is provided with a guide groove communicating with the active cavity, and the length directions of the guide groove and the active cavity are both arranged along the length direction of the measuring end; The measuring member is provided with a pushing portion, and the pushing portion passes through the active cavity and the guide groove and extends to the outside; One end of the connecting belt is arranged in the receiving groove, and the other end extends to the reading end.

5. The spinal surgery-based measuring ruler according to claim 3, characterized in that: The reading end is provided with a slide groove communicating with the active cavity; The reading component includes: A first reading member is slidably disposed in the slide groove; A second reading member is slidably disposed in the slide groove; The connection component also includes: A first connecting gear, disposed in the slide slot, and meshing with the first reading member and the second rotating gear respectively; A second connecting gear, disposed in the slide slot, and meshing with the second reading member and the second rotating gear respectively; Wherein, the second rotating gear drives the first connecting gear and the second connecting gear to rotate, so as to drive the first reading member and the second reading member to slide in the slide groove to point to the scale on the scale surface.

6. The spinal surgery-based measuring ruler according to claim 5, characterized in that: The first reading member is provided with a second rack portion; The first connecting gear comprises: A third meshing portion, meshingly connected with the second rotating gear; The fourth meshing portion is coaxially arranged with the third meshing portion, and the fourth meshing portion is meshingly connected with the second rack portion to push the first reading member to slide in the slide groove.

7. The spinal surgery-based measuring ruler according to claim 6, characterized in that: The second reading member is provided with a third rack portion; The second connecting gear comprises: a fifth meshing portion, meshingly connected with the second rotating gear; The sixth meshing portion is coaxially arranged with the fifth meshing portion, and the sixth meshing portion is meshingly connected with the third rack portion to push the second reading member to slide in the slide groove.

8. The spinal surgery-based measuring ruler according to claim 7, characterized in that: The first connecting gear and the second connecting gear are respectively located on two sides of the second rotating gear; The fourth meshing portion, the sixth meshing portion and the first meshing portion have the same shape and size.

9. The spinal surgery-based measuring ruler according to claim 5, characterized in that: A 0 scale line is arranged in the middle of the scale surface, and two measuring scale areas are arranged equidistantly from the 0 scale line to both ends, and the first reading element and the second reading element point to the two measuring scale areas respectively; The reading end is provided with a horizontal measuring part.

10. The spinal surgery-based measuring ruler according to claim 3, characterized in that: A slot portion is provided on the inner wall of the active cavity; The measuring component also includes: An abutment member, having an abutment end at one end and a clamping portion at the other end; An elastic member, one end of which abuts against the abutment end; A groove is formed at one end of the measuring member away from the reading end, and the other end of the elastic member abuts against the groove; The measuring member is provided with a communication groove, one end of which is connected to the groove, and the other end of which is connected to the active cavity; One end of the engaging portion passes through the groove and the communicating groove and extends into the active cavity; The outer peripheral surface of the measuring piece is provided with a guide plate; The elastic member is in contact with the outside to drive the clamping portion to abut against the guide plate, so that the clamping portion is deformed and the clamping portion is clamped with the clamping groove portion.

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