A measuring device for visualizing the width and depth of the intervertebral disc

Abstract

The present invention discloses a measuring device for visualizing the width and depth of an intervertebral disc, which relates to the technical field of medical devices and includes a measuring component, an actuating rod, an outer sleeve, a working tube, a channel tube, an optical tube, a handle bracket, a fixed handle, a movable handle, and an eyepiece assembly. Among them, identification scales for measuring the depth of the intervertebral disc are provided on the outer side walls of the outer sleeve and the working tube. The end of the outer sleeve is inserted into the interior of the handle bracket, and a linear toothed rail is fixed at the end of the outer sleeve. An adjusting knob is penetrated through the side surface of the handle bracket, and a gear cooperating with the linear toothed rail is provided on the adjusting knob. An arc-shaped scale is fixed between the end of the linear toothed rail and the fixed handle, and the arc-shaped scale passes through the movable handle. Scales for measuring the width of the intervertebral disc are provided on the arc-shaped scale. The end of the optical tube penetrates through the handle bracket and is aligned with the eyepiece assembly provided at the end of the handle bracket. The present invention solves the technical problem that there are large errors and inaccuracies in the existing measurement of the width and depth of the intervertebral disc.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a measuring device for visualizing the width and depth of an intervertebral disc. Background Art

[0002] In existing spinal fusion surgeries, a surgical channel is established through positioning and dilation to remove the nucleus pulposus of a herniated intervertebral disc that compresses the nerve.

[0003] Since the intervertebral disc spaces and depths of different patients are inconsistent, in existing surgical procedures, the operator observes and measures through surgical instruments under an endoscope to judge the width and depth of the intervertebral disc, and then performs the next surgical operation. However, this surgical operation method has large errors and inaccuracies, resulting in the operator needing to repeatedly adjust to accurately use matching surgical instruments.

[0004] If the width and depth of the intervertebral disc space cannot be accurately judged during the surgery, resulting in an unreasonable size of the used instrument, it will prolong the surgical time, increase the uncertainty of the surgery, and may pose potential risks to the patient during the surgery. Summary of the Invention

[0005] The purpose of the present invention is to provide a measuring device for visualizing the width and depth of an intervertebral disc to solve at least one of the above technical problems.

[0006] In a first aspect, an embodiment of the present invention provides a measuring device for visualizing the width and depth of an intervertebral disc, including: a measuring assembly, an actuating rod, an outer sleeve, a working tube, a channel tube, an optical tube, a handle bracket, a fixed handle, a movable handle, and an eyepiece assembly; wherein, identification scales for measuring the depth of the intervertebral disc are provided on the outer side walls of the outer sleeve and the working tube; the front end of the handle bracket fixes the working tube, the channel tube and the optical tube are both inserted into the working tube, the outer sleeve is inserted into the channel tube, the actuating rod is inserted into the outer sleeve, and the front end of the actuating rod is connected to the measuring assembly; the rear end of the actuating rod is pin-connected to a rear rod, the rear rod is inserted into the fixed handle and connected to the end of the movable handle; the front ends of the fixed handle and the movable handle are cross-connected inside the handle bracket through a handle fastening bolt; the end of the outer sleeve is inserted into the handle bracket, a linear tooth rail is fixed at the end of the outer sleeve, an adjustment knob is disposed through the side surface of the handle bracket, and a gear matching the linear tooth rail is provided on the adjustment knob; an arc-shaped scale is fixed between the end of the linear tooth rail and the fixed handle, and the arc-shaped scale passes through the movable handle; scales for measuring the width of the intervertebral disc are provided on the arc-shaped scale; the end of the optical tube passes through the handle bracket and is aligned with the eyepiece assembly disposed at the end of the handle bracket.

[0007] Further, the measurement component includes two measurement heads. The tails of the two measurement heads are cross-fixed to the front end of the pull rod head through a pin shaft, and the tail end of the pull rod head is inserted into the positioning block and fixedly connected to the front end of the acting pull rod.

[0008] Further, the end of the outer sleeve is fixed inside the handle bracket through a limit machine screw.

[0009] Further, a rear seal sleeve is provided at the tail end of the handle bracket, and the eyepiece assembly is assembled on the rear seal sleeve.

[0010] Further, a lighting component is provided above the rear seal sleeve. The lighting optical fibers led out by the lighting component respectively pass through the rear seal sleeve and the handle bracket and are inserted into the working tube, and the ends of the lighting optical fibers are flush with the front end of the working tube.

[0011] Further, a gear protection cover is provided below the handle bracket, and the gear protection cover is sleeved outside the internal gear of the adjustment knob.

[0012] Further, the tail ends of the fixed handle and the moving handle are both annular structures.

[0013] The present invention provides a device for measuring the width and depth of a visible intervertebral disc. By using the adjustable measurement head and the optical system in combination, it can measure the width and depth of the intervertebral disc space under visual conditions, can judge the depth and width of the current measurement position in real time, is convenient to operate, and the measurement result is more accurate, alleviating the technical problems of large errors and inaccuracies existing in the measurement of the width and depth of the existing intervertebral disc. Description of the Drawings

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is an overall schematic diagram of a device for measuring the width and depth of a visible intervertebral disc provided by an embodiment of the present invention;

[0016] Figure 2 It is a side cross-sectional view of a device for measuring the width and depth of a visible intervertebral disc provided by an embodiment of the present invention;

[0017] Figure 3Front-end sectional enlarged schematic diagram of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention;

[0018] Figure 4 Rear-end sectional enlarged schematic diagram of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention;

[0019] Figure 5 Connection schematic diagram of a rear pull rod and a moving handle provided by an embodiment of the present invention;

[0020] Figure 6 Structural enlarged schematic diagram of a measuring assembly provided by an embodiment of the present invention;

[0021] Figure 7 Explosion schematic diagram of a measuring assembly provided by an embodiment of the present invention.

[0022] In the figure: 1. Measuring assembly, 2. Acting pull rod, 3. Outer sleeve, 4. Working tube, 5. Channel tube, 6. Optical tube, 7. Handle bracket, 8. Fixed handle, 9. Moving handle, 10. Eyepiece assembly, 11. Measuring head, 12. Pin shaft, 13. Pull rod head, 14. Positioning block, 15. Rear pull rod, 16. Handle fastening bolt, 17. Linear tooth rail, 18. Adjusting knob, 19. Gear, 20. Arc scale, 21. Gear protection cover, 22. Limit machine screw, 23. Rear seal sleeve, 24. Lighting assembly. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Figure 1 Overall schematic diagram of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention, Figure 2 Side sectional view of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention, Figure 3 Front-end sectional enlarged schematic diagram of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention, Figure 4 Rear-end sectional enlarged schematic diagram of a measuring device for visible intervertebral disc width and depth provided by an embodiment of the present invention. As Figures 1-4As shown in the figure, the device includes: a measurement component 1, an actuating rod 2, an outer sleeve 3, a working tube 4, a channel tube 5, an optical tube 6, a handle bracket 7, a fixed handle 8, a movable handle 9, and an eyepiece assembly 10. Among them, identification scales for measuring the depth of the intervertebral disc are provided on the outer side walls of the outer sleeve 3 and the working tube 4.

[0025] In an alternative embodiment provided by the embodiment of the present invention, a fine depth scale is marked on the outer side of the outer sleeve 3, and a large-range depth scale is marked on the outer side of the working tube 4.

[0026] Specifically, the front end of the handle bracket 7 fixes the working tube 4. The channel tube 5 and the optical tube 6 are both inserted into the working tube 4. The outer sleeve 3 is inserted into the channel tube 5. The actuating rod 2 is inserted into the outer sleeve 3. The front end of the actuating rod 2 is connected to the measurement component 1; the rear end of the actuating rod 2 is pin-connected to the rear rod 15, and the rear rod 15 is inserted into the fixed handle 8 and connected to the end of the movable handle 9; among them, the connection schematic diagram of the rear rod 15 and the movable handle 9 is as Figure 5 shown.

[0027] The front ends of the fixed handle 8 and the movable handle 9 are cross-connected inside the handle bracket 7 through a handle fastening bolt 16.

[0028] In an alternative embodiment provided by the embodiment of the present invention, the tail ends of both the fixed handle 8 and the movable handle 9 are annular structures, and can be operated with fingers during use.

[0029] The end of the outer sleeve 3 is inserted into the handle bracket 7. A linear tooth rail 17 is fixed at the end of the outer sleeve 3. An adjustment knob 18 is disposed through the side of the handle bracket 7, and a gear 19 that cooperates with the linear tooth rail 17 is provided on the adjustment knob 18.

[0030] Specifically, as Figure 4 shown, a gear protection cover 21 is further provided below the handle bracket 7, and the gear protection cover 21 is sleeved outside the internal gear 19 of the adjustment knob 18.

[0031] Specifically, an arc-shaped scale 20 is fixed between the end of the linear tooth rail 17 and the fixed handle 8, and the arc-shaped scale 20 passes through the movable handle 9; scales for measuring the width of the intervertebral disc are provided on the arc-shaped scale 20.

[0032] The end of the optical tube 6 penetrates through the handle bracket 7 and is aligned with the eyepiece assembly 10 disposed at the end of the handle bracket 7.

[0033] Figure 6 is an enlarged schematic diagram of the structure of a measurement component provided by the embodiment of the present invention, Figure 7 is an exploded schematic diagram of a measurement component provided by the embodiment of the present invention. As Figure 6 and Figure 7As shown in the figure, the measuring assembly 1 includes two measuring heads 11. The tails of the two measuring heads 11 are cross-fixed to the front end of the pull rod head 13 through a pin shaft 12. The tail end of the pull rod head 13 is inserted into the positioning block 14 and fixedly connected to the front end of the acting pull rod 2.

[0034] In the embodiment of the present invention, the two measuring heads 11 are arranged one positive and one negative, assembled with the pull rod head 13, and fixed using the pin shaft 12. Among them, an arc-shaped chute is provided at the tail end of the measuring head 11. Specifically, as Figure 6 and Figure 7 shown, the two measuring heads 11 are stacked one positive and one negative. The tails of the two measuring heads 11 are movably connected through a pin shaft 12. At the same time, the front end of the pull rod head 13 is inserted into the position between the overlapping tails of the two measuring heads 11 and passes through the pin shaft 12, that is, the pin shaft 12 passes through the tails of the two measuring heads 11 and the front end of the pull rod head 13 at the same time, so that the tails of the two measuring heads 11 and the front end of the pull rod head 13 are connected together; the two measuring heads 11 are cross-stacked at the arc-shaped chute position and the front ends are separated left and right, forming a Y-shaped structure; the front end of the positioning block 14 is an open structure and the rear end is a hollow structure; protrusions are provided on both the upper and lower sides inside the open structure at the front end of the positioning block 14, and the two protrusions are respectively inserted into the arc-shaped chutes of the two measuring heads 11 to limit the movement trajectories of the two measuring heads 11; the tail end of the pull rod head 13 is inserted into the hollow structure at the rear end of the positioning block 14 and fixedly connected to the front end of the acting pull rod 2.

[0035] When the pull rod head 13 pulls the measuring head 11 backward, it drives the measuring head 11 to move backward relative to the positioning block 14. However, under the restriction of the protrusion at the front end of the positioning block 14 and the arc-shaped chute at the tail end of the measuring head 11, when the two measuring heads 11 move backward, the two front ends separated in a Y shape move inward, realizing the closing movement of the two measuring heads 11; when the pull rod head 13 pushes the measuring head 11 forward, it drives the measuring head 11 to move forward relative to the positioning block 14. However, under the restriction of the protrusion at the front end of the positioning block 14 and the arc-shaped chute at the tail end of the measuring head 11, when the two measuring heads 11 move forward, the two front ends separated in a Y shape move outward, realizing the separating movement of the two measuring heads 11; in this way, under the pulling or pushing action of the pull rod head 13, the two measuring heads 11 can be driven to realize the opening and closing movement.

[0036] Specifically, by operating the rotation angle of the operating handle 9, the movement of the acting pull rod 2 back and forth within the outer sleeve 3 can be controlled, driving the movement of the pull rod head 13, and further driving the opening and closing distance of the two measuring heads 11 to realize the measurement of the intervertebral disc width. At this time, the measurement data can be directly read by reading the scale indicated by the operating handle 9 on the arc-shaped scale 20.

[0037] Specifically, as Figure 4 shown, the end of the outer sleeve 3 is fixed inside the handle bracket 7 through a limit machine screw 22.

[0038] Specifically, as Figure 1 and Figure 4 shown, a rear seal sleeve 23 is further provided at the tail end of the handle bracket 7, and the eyepiece assembly 10 is assembled on the rear seal sleeve 23.

[0039] A lighting assembly 24 is provided above the rear seal sleeve 23. The lighting optical fibers led out from the lighting assembly 24 respectively pass through the rear seal sleeve 23 and the handle bracket 7 and are inserted into the working tube 4. And the ends of the lighting optical fibers are flush with the front end of the working tube 4. Specifically, the lighting assembly 24 can provide a light source for the lighting optical fibers.

[0040] The usage method of a measurement device for visualizing the width and depth of an intervertebral disc provided by an embodiment of the present invention is as follows: Insert the measurement assembly 1 from a minimally invasive incision into the part of the intervertebral disc to be measured. Control the lighting assembly 24 to provide a lighting light source to the measurement part through the lighting optical fibers. The position of the measurement assembly 1 can be directly observed from the eyepiece assembly 10. By observing the scale on the outer side of the working tube 4, a large-range measurement result of the depth of the intervertebral disc can be obtained. Then, precisely adjust the penetration depth of the outer sleeve tube 3 by adjusting the knob 18, and by reading the scale on the outer side of the outer sleeve tube 3, precise measurement data of the depth of the intervertebral disc can be obtained. After inserting the measurement assembly 1 into the position of the distance between the intervertebral discs to be measured, control the opening angle of the operating handle 9 to control the opening and closing distance of the measurement head 11. Directly observe from the eyepiece assembly whether the two ends of the measurement head 11 are the same as the distance between the intervertebral discs. Finally, by reading the indicated scale of the operating handle 9 on the arc-shaped scale 20, accurate measurement data of the distance between the intervertebral discs to be measured can be obtained.

[0041] As can be seen from the above description, a measurement device for visualizing the width and depth of an intervertebral disc provided by an embodiment of the present invention, through the combined use of an adjustable measurement head and an optical system, can measure the width and depth of the intervertebral disc space under visualization conditions, can judge the depth and width of the current measurement position in real time, is convenient to operate, and the measurement result is more accurate, alleviating the technical problems that there are large errors and inaccuracies in the existing measurement of the width and depth of an intervertebral disc.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0043] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for measuring the width and depth of a visual intervertebral disc, characterized in that: include: Measuring assembly, action rod, outer sleeve, working tube, channel tube, optical tube, handle bracket, fixed handle, movable handle and eyepiece assembly; wherein, marking scales for measuring the depth of intervertebral disc are arranged on the outer side walls of the outer sleeve and the working tube; The front end of the handle bracket fixes the working tube, the channel tube and the optical tube are both inserted into the working tube, the outer sleeve is inserted into the channel tube, the action rod is inserted into the outer sleeve, and the front end of the action rod is connected to the measuring assembly; the rear end of the action rod is pin-connected to the rear rod, and the rear rod is inserted into the fixed handle and connected to the end of the movable handle; the front ends of the fixed handle and the movable handle are cross-connected inside the handle bracket through handle fastening bolts; The end of the outer sleeve is inserted into the handle bracket, a linear rack is fixed to the end of the outer sleeve, an adjusting knob is provided through the side of the handle bracket, and a gear matching the linear rack is provided on the adjusting knob; An arc-shaped ruler is fixed between the end of the linear rack and the fixed handle, and the arc-shaped ruler passes through the movable handle; the arc-shaped ruler is provided with a scale for measuring the width of the intervertebral disc; The end of the optical tube passes through the handle bracket and is aligned with the eyepiece assembly disposed at the end of the handle bracket; An illumination assembly is arranged above the rear sealing sleeve, and an illumination optical fiber led out from the illumination assembly passes through the rear sealing sleeve and the handle bracket and is inserted into the working tube, respectively, and the end of the illumination optical fiber is flush with the front end of the working tube; A rear sealing sleeve is also arranged at the rear end of the handle bracket, and the eyepiece assembly is assembled on the rear sealing sleeve.

2. The device for measuring the width and depth of a visible intervertebral disc according to claim 1, characterized in that: The measuring assembly comprises two measuring heads, the tail ends of the two measuring heads are cross-fixed to the front end of the pull rod head through a pin shaft, and the tail end of the pull rod head is inserted into a positioning block and fixedly connected to the front end of the action pull rod.

3. The device for measuring the width and depth of a visible intervertebral disc according to claim 1, characterized in that: The end of the outer sleeve is fixed inside the handle bracket by a limiting screw.

4. The device for measuring the width and depth of a visible intervertebral disc according to claim 1, characterized in that: A gear protection cover is also arranged below the handle bracket, and the gear protection cover is sleeved on the outer side of the gear inside the adjusting knob.

5. The device for measuring the width and depth of a visible intervertebral disc according to claim 1, characterized in that: The tail end of the fixed handle and the tail end of the movable handle are both annular structures.

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