Intervertebral disc width and depth measuring device

Abstract

The utility model discloses an intervertebral disc width and depth measuring device, which relates to the technical field of medical instruments and comprises a measuring component, a pull rod, an outer sleeve and a handle. The measuring assembly comprises two measuring heads for measuring the width of the intervertebral disc; scales for measuring the depth of the intervertebral disc are arranged on the outer wall of the outer sleeve; wherein the tail end of the outer sleeve is fixedly connected with the handle, an adjusting knob is arranged at the tail end of the handle, scales for measuring the width of the intervertebral disc are further arranged at the tail end of the handle, and a pointer for indicating the scales is arranged on the adjusting knob; the measuring assembly is connected with the front end of the pull rod, and the tail end of the pull rod penetrates through the outer sleeve and the handle, penetrates out of the tail of the handle and is connected with the adjusting knob through multiple threads. The intervertebral disc measuring device solves the technical problem of inaccurate measurement of the width and the depth of the intervertebral disc in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a device for measuring the width and depth of an 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 posed to the patient. Utility Model Content

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

[0006] In a first aspect, an embodiment of the utility model provides a device for measuring the width and depth of an intervertebral disc, comprising: a measuring assembly, a pull rod, an outer sleeve and a handle; the measuring assembly comprises two measuring heads for measuring the width of the intervertebral disc; a scale for measuring the depth of the intervertebral disc is arranged on the outer wall of the outer sleeve; wherein the tail end of the outer sleeve is fixedly connected to the handle, an adjusting knob is arranged at the tail end of the handle, a scale for measuring the width of the intervertebral disc is also arranged at the tail end of the handle, a pointer for indicating the scale is arranged on the adjusting knob; the measuring assembly is connected to the front end of the pull rod, the tail end of the pull rod passes through the outer sleeve and the handle and comes out from the tail of the handle, and is connected to the adjusting knob through a multi-threaded connection.

[0007] Furthermore, the measuring assembly also includes a positioning block and a movable block, the tail ends of the two measuring heads are provided with sliding grooves, the front end of the positioning block is provided with two pins, the sliding grooves of the two measuring heads pass through the two pins respectively, the tail ends of the two measuring heads are simultaneously movably connected to the front end of the movable block, and the tail end of the movable block is fixedly connected to the front end of the pull rod.

[0008] Furthermore, a multi-start thread is provided at the tail end of the pull rod, and a multi-start internal thread is provided at the front end of the adjusting knob, and the multi-start thread is matched and connected with the multi-start internal thread.

[0009] Furthermore, the adjusting knob is fixed to the tail of the handle by a ball screw.

[0010] The utility model provides a device for measuring the width and depth of an intervertebral disc. The device performs measurements by means of an adjustment knob with a scale indication, and a depth scale mark is provided on a measuring head. The depth and width of the current measuring position can be judged in real time, thereby providing convenience, accuracy and reliability for surgical operations and alleviating the technical problem of inaccurate measurement of the width and depth of the intervertebral disc in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 A schematic diagram of the overall structure of a device for measuring the width and depth of an intervertebral disc provided by an embodiment of the utility model;

[0013] Figure 2 A side cross-sectional view of a device for measuring the width and depth of an intervertebral disc provided by an embodiment of the utility model;

[0014] Figure 3 A partially enlarged schematic diagram of a handle and an adjustment knob provided in an embodiment of the utility model;

[0015] Figure 4 An exploded diagram of a measurement assembly provided by an embodiment of the utility model;

[0016] Figure 5 An exploded view of the tail of a device for measuring the width and depth of an intervertebral disc provided in an embodiment of the utility model.

[0017] In the figure: 1. pull rod, 2. outer sleeve, 3. handle, 4. measuring head, 5. adjusting knob, 6. pointer, 7. positioning block, 8. movable block, 9. pin, 10. multi-start thread, 11. multi-start internal thread, 12. ball screw. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Figure 1 This is a schematic diagram of the overall structure of an intervertebral disc width and depth measuring device provided according to an embodiment of the utility model. Figure 2 1 is a side cross-sectional view of a device for measuring the width and depth of an intervertebral disc provided according to an embodiment of the present utility model. Figure 1 and Figure 2 As shown, the device comprises: a measuring assembly, a pull rod 1, an outer sleeve 2 and a handle 3; wherein the measuring assembly comprises two measuring heads 4 for measuring the width of the intervertebral disc; and a scale for measuring the depth of the intervertebral disc is arranged on the outer wall of the outer sleeve 2.

[0020] Specifically, the tail end of the outer sleeve 2 is fixedly connected to the handle 3 , and an adjusting knob 5 is provided at the tail end of the handle 3 .

[0021] Figure 3 This is a partially enlarged schematic diagram of a handle and an adjustment knob provided according to an embodiment of the utility model. Figure 3 As shown, a scale for measuring the width of the intervertebral disc is also arranged at the rear end of the handle 3, and a pointer 6 for indicating the scale is arranged on the adjusting knob 5.

[0022] Specifically, Figure 2 As shown, the measuring assembly is connected to the front end of the pull rod 1, the rear end of the pull rod 1 passes through the outer sleeve 2 and the handle 3 and comes out from the rear end of the handle 3, and is connected to the adjusting knob 5 through a multi-threaded connection.

[0023] Figure 4 FIG. 1 is an exploded view of a measurement component provided according to an embodiment of the present utility model. Figure 4 As shown, the measuring assembly also includes a positioning block 7 and a movable block 8, the tail ends of the two measuring heads 4 are both provided with a slide groove, the front end of the positioning block 7 is provided with two pins 9, the slide grooves of the two measuring heads 4 are respectively passed through the two pins 9, the tail ends of the two measuring heads 4 are simultaneously movably connected to the front end of the movable block 8, and the tail end of the movable block 8 is fixedly connected to the front end of the pull rod 1. Specifically, the two measuring heads 4 form a Y-shaped structure, when the movable block 8 pushes the measuring heads 4 forward, the front ends of the two measuring heads 4 can be controlled to open; when the movable block 8 pulls the measuring heads 4 backward, the front ends of the two measuring heads 4 can be controlled to close.

[0024] Specifically, Figure 1 and Figure 2As shown, the rear end of the positioning block 7 is fixedly connected to the front end of the outer sleeve 2 .

[0025] Specifically, Figure 4 As shown, the front end of the positioning block 7 is an open structure, and the rear end of the positioning block 7 is a hollow structure; two pins 9 are inserted side by side at the front end of the opening structure of the positioning block 7; the rear ends of the two measuring heads 4 are movably connected, and the front ends are separated to form a Y-shaped structure. At the same time, the rear ends of the two measuring heads 4 are movably connected to the front end of the movable block 8, and the rear end of the movable block 8 is inserted into the hollow structure of the rear end of the positioning block 7 and is fixedly connected to the front end of the pull rod 1; the slides of the two measuring heads 4 are respectively set through the two pins 9. When the movable block 8 pushes the measuring head 4 forward, the slides of the two measuring heads 4 slide forward along the two pins 9, and the front ends are separated to both sides respectively; when the movable block 8 pulls the measuring head 4 backward, the slides of the two measuring heads 4 slide backward along the two pins 9, and the front ends merge and move closer to the inside.

[0026] Figure 5 FIG. 1 is an exploded view of the tail of a device for measuring the width and depth of an intervertebral disc provided according to an embodiment of the utility model. Figure 5 As shown, the tail end of the pull rod 1 is provided with a multi-start thread 10, and the front end of the adjusting knob 5 is provided with a multi-start internal thread 11, and the multi-start thread 10 is matched and connected with the multi-start internal thread 11. Specifically, the front and rear movement of the pull rod 1 in the outer sleeve 2 can be adjusted by rotating the adjusting knob 5.

[0027] like Figure 2 and Figure 5 As shown, the adjusting knob 5 is fixed to the tail of the handle 3 by a ball screw 12 .

[0028] The utility model provides a device for measuring the width and depth of an intervertebral disc, and the method of use is as follows: the outer side of the outer sleeve 2 on the device is provided with a height marking scale. The device is used during a surgical procedure, and the operator enters the inner intervertebral lamina through the surgical channel. The operator turns the adjustment knob 5, and the measuring head 4 can be unfolded to support the two sides of the intervertebral lamina. At this time, the width of the intervertebral lamina can be known by reading the scale value pointed to by the pointer 6 on the adjustment knob 5, and the depth of the approximate measurement position can be read by observing the scale on the outer sleeve 2.

[0029] From the above description, it can be seen that the utility model provides a device for measuring the width and depth of an intervertebral disc. The device performs measurements by means of an adjustment knob with a scale indication, and the measuring head is provided with a depth scale marking. The depth and width of the current measuring position can be judged in real time, which provides convenience, accuracy and reliability for surgical operations and alleviates the technical problem of inaccurate measurement of the width and depth of the intervertebral disc in the prior art.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] 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 intervertebral disc width and depth, characterized in that: include: A measuring assembly, a pull rod, an outer sleeve and a handle; the measuring assembly includes two measuring heads for measuring the width of the intervertebral disc; a scale for measuring the depth of the intervertebral disc is provided on the outer wall of the outer sleeve; wherein, The tail end of the outer sleeve is fixedly connected to the handle, an adjusting knob is arranged at the tail end of the handle, a scale for measuring the width of the intervertebral disc is also arranged at the tail end of the handle, and a pointer for indicating the scale is arranged on the adjusting knob; the measuring assembly is connected to the front end of the pull rod, the tail end of the pull rod passes through the outer sleeve and the handle and comes out from the tail of the handle, and is connected to the adjusting knob through a multi-threaded connection; The measuring assembly also includes a positioning block and a movable block. The tail ends of the two measuring heads are each provided with a slide groove. The front end of the positioning block is provided with two pin shafts. The slide grooves of the two measuring heads pass through the two pin shafts respectively. The tail ends of the two measuring heads are simultaneously movably connected to the front end of the movable block. The tail end of the movable block is fixedly connected to the front end of the pull rod.

2. The intervertebral disc width and depth measuring device according to claim 1, characterized in that: The tail end of the pull rod is provided with a multi-start thread, the front end of the adjusting knob is provided with a multi-start internal thread, and the multi-start thread is matched and connected with the multi-start internal thread.

3. The intervertebral disc width and depth measuring device according to claim 1, characterized in that: The adjusting knob is fixed to the tail of the handle by a ball screw.

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