Visual intervertebral disc width and depth measuring device

Abstract

The invention discloses a visual intervertebral disc width and depth measuring device, which relates to the technical field of medical instruments and comprises a measuring assembly, an acting pull 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, the outer side wall of the outer sleeve and the outer side wall of the working tube are each provided with identification scales used for measuring the depth of the intervertebral disc. The tail end of the outer sleeve is inserted into the handle support, a linear toothed rail is fixed to the tail end of the outer sleeve, an adjusting knob penetrates through the side face of the handle support, and a gear matched with the linear toothed rail is arranged on the adjusting knob; an arc-shaped ruler is fixed between the tail end of the linear toothed rail and the fixed handle and penetrates through the movable handle; scales for measuring the width of the intervertebral disc are arranged on the arc-shaped ruler; the tail end of the optical tube penetrates through the handle support and is aligned with the eyepiece assembly arranged at the tail end of the handle support. According to the invention, the technical problems of large error and inaccuracy existing in width and depth measurement of the intervertebral disc in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a device for measuring the width and depth of a visual intervertebral disc. Background Art

[0002] In existing spinal fusion surgery, the nucleus pulposus of the herniated disc that compresses the nerves can be removed by establishing a surgical channel after positioning and expansion.

[0003] Due to the inconsistency of the intervertebral disc space and depth among different patients, in the existing surgical plan, the operator uses surgical instruments under the endoscope to observe and measure, determine the width and depth of the intervertebral disc, and then proceed to the next surgical operation. However, this surgical operation method has large errors and inaccuracies, which causes the operator to use the matching surgical instruments accurately and needs to make repeated adjustments.

[0004] If the width and depth of the intervertebral disc space cannot be accurately judged during the operation, resulting in the use of unreasonable sized instruments, the operation time will be prolonged, the uncertainty of the operation will be increased, and potential risks may be put to the patient during the operation. Summary of the invention

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

[0006] In a first aspect, an embodiment of the present invention provides a visual intervertebral disc width and depth measuring device, comprising: a measuring assembly, an action 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, the outer side walls of the outer sleeve and the working tube are both provided with marking scales for measuring the depth of the intervertebral disc; 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 pin of the action rod is connected to the rear rod, and the rear rod is inserted into the fixed handle The handle is inside the handle and connected to the end of the movable handle; the front end of the fixed handle and the front end of 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, and 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 ruler is fixed between the end of the linear rack and the fixed handle, and the arc ruler passes through the movable handle; a scale for measuring the width of the intervertebral disc is provided on the arc ruler; the end of the optical tube passes through the handle bracket and is aligned with the eyepiece assembly provided at the end of the handle bracket.

[0007] Furthermore, the measuring assembly includes 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.

[0008] Furthermore, the end of the outer sleeve is fixed to the inside of the handle bracket by a limit screw.

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

[0010] Furthermore, a lighting assembly is arranged above the rear sealing sleeve, and the lighting optical fiber led out from the lighting assembly passes through the rear sealing sleeve and the handle bracket and is inserted into the working tube, and the end of the lighting optical fiber is flush with the front end of the working tube.

[0011] Furthermore, a gear protection cover is provided below the handle bracket, and the gear protection cover is sleeved on the outside of the gear inside the adjusting knob.

[0012] Furthermore, the tail end of the fixed handle and the tail end of the movable handle are both annular structures.

[0013] The present invention provides a visual intervertebral disc width and depth measuring device. By using an adjustable measuring head and an optical system in combination, the width and depth of the intervertebral disc space can be measured under visual conditions, and the depth and width of the current measuring position can be judged in real time. The operation is convenient, and the measurement result is more accurate, which alleviates the technical problem of large errors and inaccuracies in the existing intervertebral disc width and depth measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 An overall schematic diagram of a visual intervertebral disc width and depth measurement device provided by an embodiment of the present invention; Figure 2 A side cross-sectional view of a visual intervertebral disc width and depth measuring device provided by an embodiment of the present invention; Figure 3 A front end cross-sectional enlarged schematic diagram of a visual intervertebral disc width and depth measuring device provided by an embodiment of the present invention; Figure 4 A rear end cross-sectional enlarged schematic diagram of a visual intervertebral disc width and depth measuring device provided by an embodiment of the present invention; Figure 5 A schematic diagram of the connection between a rear pull rod and a movable handle provided in an embodiment of the present invention; Figure 6 An enlarged schematic diagram of the structure of a measurement component provided by an embodiment of the present invention; Figure 7 An exploded schematic diagram of a measurement component provided by an embodiment of the present invention.

[0016] In the figure: 1. measuring assembly, 2. action 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. rod head, 14. positioning block, 15. rear rod, 16. handle fastening bolt, 17. linear gear rail, 18. adjusting knob, 19. gear, 20. arc ruler, 21. gear protection cover, 22. limit machine screw, 23. rear sealing sleeve, 24. lighting assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Figure 1 is an overall schematic diagram of a visual intervertebral disc width and depth measurement device provided according to an embodiment of the present invention, Figure 2 is a side cross-sectional view of a visual intervertebral disc width and depth measuring device provided according to an embodiment of the present invention, Figure 3 is a front end cross-sectional enlarged schematic diagram of a visual intervertebral disc width and depth measuring device provided according to an embodiment of the present invention, Figure 4 FIG. 1 is a rear end cross-sectional enlarged schematic diagram of a visual intervertebral disc width and depth measuring device provided according to an embodiment of the present invention. Figure 1-Figure 4 As shown, the device comprises: a measuring assembly 1, an action 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. The outer walls of the outer sleeve 3 and the working tube 4 are both provided with marking scales for measuring the depth of the intervertebral disc.

[0019] In an optional implementation provided by an embodiment of the present invention, the outer side of the outer sleeve 3 is marked with a fine depth scale, and the outer side of the working tube 4 is marked with a large range depth scale.

[0020] Specifically, the front end of the handle bracket 7 fixes the working tube 4, the channel tube 5 and the optical tube 6 are inserted into the working tube 4, the outer sleeve 3 is inserted into the channel tube 5, the action rod 2 is inserted into the outer sleeve 3, and the front end of the action rod 2 is connected to the measuring component 1; the rear end of the action 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; wherein, the connection diagram of the rear rod 15 and the movable handle 9 is as shown in Figure 5 shown.

[0021] The front end of the fixed handle 8 and the front end of the movable handle 9 are cross-connected inside the handle bracket 7 through handle fastening bolts 16 .

[0022] In an optional implementation provided by an embodiment of the present invention, the tail end of the fixed handle 8 and the tail end of the movable handle 9 are both annular structures, and can be operated with fingers when in use.

[0023] The end of the outer sleeve 3 is inserted into the handle bracket 7 , and a linear rack 17 is fixed to the end of the outer sleeve 3 . An adjusting knob 18 is provided through the side of the handle bracket 7 , and a gear 19 matching the linear rack 17 is provided on the adjusting knob 18 .

[0024] Specifically, Figure 4 As shown, a gear protection cover 21 is further provided below the handle bracket 7 , and the gear protection cover 21 is sleeved on the outer side of the gear 19 inside the adjusting knob 18 .

[0025] Specifically, an arc-shaped scale 20 is fixed between the end of the linear rack 17 and the fixed handle 8 , and the arc-shaped scale 20 passes through the movable handle 9 ; the arc-shaped scale 20 is provided with a scale for measuring the width of the intervertebral disc.

[0026] The end of the optical tube 6 passes through the handle bracket 7 and is aligned with the eyepiece assembly 10 disposed at the end of the handle bracket 7 .

[0027] Figure 6 is a schematic diagram of an enlarged structure of a measurement component provided according to an embodiment of the present invention, Figure 7 FIG. 1 is an exploded schematic diagram of a measurement component provided according to an embodiment of the present invention. Figure 6 and Figure 7 As shown, the measuring assembly 1 includes two measuring heads 11 , the tail ends of the two measuring heads 11 are cross-fixed to the front end of the tie rod head 13 through a pin 12 , and the tail end of the tie rod head 13 is inserted into a positioning block 14 and fixedly connected to the front end of the action tie rod 2 .

[0028] In the embodiment of the present invention, two measuring heads 11 are arranged one positive and one negative, and are assembled together with the pull rod head 13 and fixed by the pin 12. The tail end of the measuring head 11 is provided with an arc-shaped slide groove. Figure 6 and Figure 7 As shown, two measuring heads 11 are stacked together, one facing forward and the other facing backward, and the tail ends of the two measuring heads 11 are movably connected by a pin 12. At the same time, the front end of the pull rod head 13 is inserted into the position between the overlapping tail ends of the two measuring heads 11 and passes through the pin 12, that is, the pin 12 passes through the tail ends of the two measuring heads 11 and the front end of the pull rod head 13 at the same time, so that the tail ends 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 position of the arc-shaped slide groove, and the front ends are separated to the left and right to form 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 arranged on the upper and lower sides of the interior of the front end opening structure of the positioning block 14, and the two protrusions are respectively inserted into the arc-shaped slide grooves of the two measuring heads 11, so as to limit the moving trajectory 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 is fixedly connected to the front end of the action pull rod 2.

[0029] When the pull rod head 13 pulls the measuring head 11 backward, it drives the measuring head 11 to move toward the rear of the positioning block 14. However, due to the restriction of the front end protrusion of the positioning block 14 and the arc-shaped slide groove at the rear end of the measuring head 11, the two front ends separated in a Y shape move inward while the two measuring heads 11 move backward, thereby 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 toward the front of the positioning block 14. However, due to the restriction of the front end protrusion of the positioning block 14 and the arc-shaped slide groove at the rear end of the measuring head 11, the two front ends separated in a Y shape move outward while the two measuring heads 11 move forward, thereby realizing the separation movement of the two measuring heads 11; in this way, the two measuring heads 11 can be driven to realize the opening and closing movement under the pulling or pushing action of the pull rod head 13.

[0030] Specifically, by operating the rotation angle of the movable handle 9, the action rod 2 can be controlled to move forward and backward in the outer sleeve 3, and the movement of the rod head 13 can be driven, thereby driving the opening and closing distance of the two measuring heads 11 to achieve the measurement of the intervertebral disc width. At this time, the measurement data can be directly read by reading the scale indicated by the movable handle 9 on the arc ruler 20.

[0031] Specifically, Figure 4 As shown, the end of the outer sleeve 3 is fixed to the inside of the handle bracket 7 by a limiting screw 22.

[0032] Specifically, Figure 1 and Figure 4 As shown, a rear sealing sleeve 23 is also provided at the rear end of the handle bracket 7, and the eyepiece assembly 10 is assembled on the rear sealing sleeve 23.

[0033] An illumination assembly 24 is disposed above the rear sealing sleeve 23. The illumination optical fiber led out of the illumination assembly 24 passes through the rear sealing sleeve 23 and the handle bracket 7 and is inserted into the working tube 4, and the end of the illumination optical fiber is flush with the front end of the working tube 4. Specifically, the illumination assembly 24 can provide a light source for the illumination optical fiber.

[0034] The method of using a visual intervertebral disc width and depth measuring device provided by an embodiment of the present invention is as follows: the measuring component 1 is inserted into the intervertebral disc to be measured from the minimally invasive incision, the lighting component 24 is controlled to provide a lighting source to the measuring part through the lighting optical fiber, and the position of the measuring component 1 can be directly observed from the eyepiece component 10; by observing the scale on the outside of the working tube 4, a large-scale measurement result of the intervertebral disc depth can be obtained, and then the depth of the outer sleeve 3 is precisely adjusted by adjusting the knob 18, and the accurate measurement data of the intervertebral disc depth can be obtained by reading the scale on the outside of the outer sleeve 3. After the measuring component 1 is inserted into the position of the intervertebral disc distance to be measured, the opening angle of the movable handle 9 is controlled to control the opening and closing distance of the measuring head 11, and the two ends of the measuring head 11 are directly observed through the eyepiece component to see whether they are the same as the intervertebral disc distance, and finally the accurate measurement data of the intervertebral disc distance to be measured is obtained by reading the indicating scale of the movable handle 9 on the arc ruler 20.

[0035] From the above description, it can be seen that the visual intervertebral disc width and depth measuring device provided by the embodiment of the present invention can measure the width and depth of the intervertebral disc space under visualization conditions through the combination of an adjustable measuring head and an optical system, and can judge the depth and width of the current measuring position in real time. The operation is convenient, and the measurement results are more accurate, which alleviates the technical problems of large errors and inaccuracies in the existing intervertebral disc width and depth measurements.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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 arranged at the end of the handle bracket.

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 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.

5. The device for measuring the width and depth of a visible intervertebral disc according to claim 4, characterized in that: 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, and the end of the illumination optical fiber is flush with the front end of the working tube.

6. 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.

7. 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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