Auxiliary tool for spinal facet joint operation

Abstract

An auxiliary tool for spinal facet joint surgery is used for solving the problems that in the spinal facet joint surgery process, the surgical section is uneven, and the operation difficulty is large, and mainly comprises a base, an interlayer, a driving device, a rack, a guide plate and a shell, a driving gear is arranged on the driving device, and the rack is connected with the driving gear through a first driven gear; the distance and the angle of the knife inlet on the guide plate are adjusted by changing the position of the driving device, the spinal facet joints on the two sides can be cut by one tool by rotating the fixing device, the operation difficulty is greatly reduced, and the cutting flatness of the spinal facet joints is improved.

Description

Technical Field

[0001] The invention patent relates to the field of medical device technology, specifically, to a spinal facet joint surgery auxiliary tool. Background Art

[0002] In spinal facet joint surgery, traditional surgical tools have problems such as difficult operation, long operation time and large surgical trauma. In order to solve these problems, a series of spinal facet joint surgery auxiliary tools have been developed in recent years. These tools are designed to improve surgical accuracy, reduce surgical trauma, shorten operation time, and provide doctors with a better operating experience.

[0003] However, most of the surgical auxiliary tools in the past were concentrated in the spine field, and few people paid attention to the field of spinal facet joints. During spinal facet joint surgery, the articular surface of the facet joint needs to be cut. In order to make the spinal facet joint fusion device better fuse with the human skeleton, it is necessary to ensure that the cut surface and the spinal facet joint fusion device fit better. However, in the process of cutting, the doctor inevitably causes the cutting surface of the spinal facet joint to be uneven. Secondly, the surgical auxiliary tools for spinal facet joints in the existing technology are complicated to operate, which increases the difficulty of the operation. Summary of the invention

[0004] The purpose of the present invention is to provide a spinal facet joint surgery auxiliary tool to solve the problems of uneven facet joint cutting surface and complicated operation during spinal facet joint surgery.

[0005] In order to solve the above problems, the present invention provides a spinal facet joint surgery auxiliary tool, including: a base, the inner surface of the base is provided with a rotating track and a first limit groove, and an elastic component is provided on the base; a fixing device, the fixing device is composed of a cylinder, and two fixing protrusions are provided on the side of the fixing device, the fixing device is connected to the first limit groove on the base through the fixing protrusion, the lower surface of the fixing device is provided with a spinous process groove for fixing the spinous process on the spine, and the upper surface of the fixing device is connected to the elastic component; an interlayer, the interlayer is provided with a first limit column and a second limit column, and the interlayer and the base are connected to each other in a close fit; a rack, one end of the rack is connected to the guide plate, and the rack is meshed with the first driven gear; a driving device, the driving device is composed of a driving rod and a driving gear, and the driving gear of the driving device can be meshed with the rack or the guide plate; a shell, the shell is fixed on the interlayer.

[0006] Furthermore, the guide plate is composed of a guide plate shell, a second driven gear, a rotating block, and an inlet; the guide plate shell is fixed to one end of the rack; the side surface of the rotating block is set as an arc surface, and the upper and lower surfaces are set as planes; the second driven gear is fixedly connected to the rotating block, and the second driven gear can be engaged with the driving gear of the driving device, and the inlet is set on the rotating block for placing surgical cutting tools.

[0007] Furthermore, a second limiting groove is provided at the bottom of the rack, and the second limiting groove cooperates with the second limiting column to limit the movement distance of the rack.

[0008] Furthermore, the driving device can move in a horizontal direction; when the driving device is pulled outward, one end of the driving gear on the driving device engages with the first driven gear, and the other end disengages from the second driven gear; when the driving device is pushed inward, one end of the driving gear on the driving device engages with the second driven gear, and the other end disengages from the first driven gear.

[0009] Furthermore, the spinous process groove of the fixing device can be set to different sizes.

[0010] Furthermore, a guide protrusion is provided at the bottom of the rotating block to assist in guiding the insertion of the surgical cutting tool and improve the accuracy of the surgery.

[0011] Furthermore, a tactile sensor is provided at the end of the driving rod to provide more precise surgical control by real-time monitoring of feedback information during the operation.

[0012] Furthermore, scale marks are provided on the rotation track of the guide plate to provide the surgeon with an accurate reference for the angle and position of the facet joints of the spine.

[0013] Furthermore, an adsorbent material is provided at the bottom of the fixing device for tightly adhering to the surgical area.

[0014] By applying the technical solution of the present invention, the moving distance of the rack and the rotation angle of the second driven gear are adjusted by a rotating driving device so that the cutting edge reaches a predetermined position, and then cutting is performed to ensure the flatness of the cutting surface. The position and angle of the cutting edge are adjusted by a driving device, which greatly reduces the difficulty of surgical operation. In order to prevent the rack from detaching from the base, a limit groove is set at the bottom of the rack so that the rack can only move within a certain distance. The distance of the guide plate and the angle of the entrance can be adjusted respectively by a push-pull driving device. At the same time, in order to meet the needs of different groups, the fixing device is replaceable, and the spinous process groove of the fixing device has different specifications. The guide protrusions and scale marks provided on the rotating block can effectively improve the cutting accuracy.

[0015] Among them, when surgery is required on the facet joint of the spine on the other side, it is only necessary to press downward, and the fixing device will move upward under the action of the elastic component, so that the protrusion of the fixing device moves to the rotating track, and then the facet joint surgery tool is rotated to rotate the side with the guide plate to the diseased part of the facet joint of the spine on the other side, and then stop squeezing. The fixing device will return to the predetermined position under the action of the elastic component, so that the protrusion of the fixing device is fixed in the first limiting groove, thereby realizing the cutting of the facet joints on the left and right sides.

[0016] The guide plate distance and the angle of the rotating block can be adjusted by adjusting a driving device, which greatly reduces the difficulty of operation. At the same time, the present invention realizes that one tool can cut the facet joints on both sides by designing the rotation of the fixing device, which reduces the tool cost. In addition, since the center of the facet joint surgery auxiliary tool is fixed by the spinous process, the accuracy of the surgery is also improved through gear transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 An exploded view of a spinal facet joint surgery assisting tool is shown;

[0019] Figure 2 A triaxial view of the base is shown;

[0020] Figure 3 An orthogonal triaxial view of the fixture is shown;

[0021] Figure 4 A cross-sectional view of the base is shown;

[0022] Figure 5 A schematic diagram of the sandwich is shown;

[0023] Figure 6 A diagram showing the connection relationship between the drive device, the rack and the guide plate;

[0024] Figure 7 An orthographic triaxial view of the drive, rack and guide plate is shown;

[0025] Figure 8 A positive triaxial view of the rotating block and the second driven gear is shown;

[0026] Fig. 9 A front view of the housing is shown.

[0027] Among them, the above-mentioned drawings include the following figure marks: 10, base; 101, rotating track; 102, first limiting groove; 103, elastic component; 20, fixing device; 201, fixing protrusion; 202, spinous process groove; 30, interlayer; 301, first limiting column; 302, second limiting column; 40, driving device; 401, driving rod; 402, driving gear; 50, first driven gear; 60, rack; 601, second limiting groove; 70, guide plate; 701, guide plate housing; 702, second driven gear; 703, rotating block; 704, feed edge; 80, shell. DETAILED DESCRIPTION

[0028] 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] like Figure 1-9As shown: A spinal facet joint surgery auxiliary tool, comprising: a base 10, the inner surface of which is provided with a rotating track 101 and a first limiting groove 102, and an elastic component 103 is provided on the base; a fixing device 20, which is composed of a cylinder, and the side of the fixing device is provided with two fixing protrusions 201, and the fixing device is connected to the first limiting groove on the base through the fixing protrusions, and the lower surface of the fixing device is provided with a spinous process groove 202 for fixing the spinous process on the spine, and the upper surface of the fixing device is connected to the elastic component; an interlayer 30, on which a first limiting column 301 and a second limiting column 302 are provided, and the interlayer and the base are connected to each other; a rack 60, one end of which is connected to the guide plate, and the rack is meshed with the first driven gear 50; a driving device 40, which is composed of a driving rod 401 and a driving gear 402, and the driving gear of the driving device can be meshed with the rack or the guide plate 70; a shell 80, and the shell is fixed on the interlayer.

[0032] The guide plate is composed of a guide plate housing, a second driven gear, a rotating block, and an inlet; the guide plate housing 701 is fixed to one end of the rack; the side of the rotating block 703 is set to an arc surface, and the upper and lower surfaces are set to be planes; the second driven gear 702 is fixedly connected to the rotating block, and the second driven gear can be meshed with the driving gear of the driving device, and the inlet 704 is set on the rotating block for placing surgical cutting tools. The bottom of the rack is provided with a second limiting groove, and the second limiting groove cooperates with the second limiting column to limit the movement distance of the rack. The driving device can move in the horizontal direction; when the driving device is pulled outward, one end of the driving gear on the driving device is meshed with the first driven gear, and the other end is disengaged from the second driven gear; when the driving device is pushed inward, one end of the driving gear on the driving device is meshed with the second driven gear, and the other end is disengaged from the first driven gear. The spinous process groove of the fixing device can be set to different sizes. The bottom of the rotating block is provided with a guide protrusion to assist in guiding the insertion of the surgical cutting tool and improve the accuracy of the operation. The end of the driving rod is provided with a tactile sensor, which provides more precise surgical control by real-time monitoring of feedback information during the operation. The rotating track of the guide plate is provided with scale marks to provide the surgeon with accurate reference for the angle and position of the spinal facet joints. The bottom of the fixing device is provided with an adsorption material to closely adhere to the surgical area.

[0033] During use, first insert the base of the spinal facet joint surgery auxiliary tool into the spinous process of the spine, use the matching spinous process groove to make the base fully fit with the spinous process groove, then squeeze and rotate downward to make one side of the spinal facet joint surgery auxiliary tool with the guide plate move to the - side of the diseased spinal facet joint, and then stop squeezing. At this time, the fixing device is fixed by the fixing protrusion and the first limiting groove, and then pull the driving device outward so that the driving gear of the driving device is engaged with the first driven gear, and the first driven gear drives the rack to move outward so that the guide plate reaches the predetermined position, and then push the driving device to disengage the driving gear from the first driven gear and engage with the second driven gear, rotate the driving rod, adjust the angle of the rotating block, and make the cutting edge rotate to the predetermined angle. At this time, if there is a deviation from the predetermined position, the above steps can be repeated until the horizontal position and rotation angle of the cutting edge reach the predetermined position, and then the surgical tool is inserted from the cutting edge to cut the spinal facet joint.

[0034] like Figure 3 As shown, the spinous process groove of the fixing device can be set to different specifications to adapt to different human body needs, and can also be set to a spinous process groove with gradient changes. For example, the spinous process groove of the smallest specification is designed at the top of the spinous process groove, and then the size of the spinous process groove is gradient-changed so that the outermost spinous process groove is the largest, so that a fixing device can be adapted to all spinous process joints. It can also be set to different fixing devices, whose radius is the same, but the spinous process groove in the middle is different in size, and the adaptation to different spinous process joints is achieved by replacing the fixing device. It is also possible to add an elastic component at the position of the spinous process groove, and the fixing effect can be achieved by clamping the spinous process joints through the elastic component.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature with other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spinal facet joint surgery auxiliary tool, characterized in that: include: A base, wherein a rotating track and a first limiting groove are arranged on the inner surface of the base, and an elastic component is arranged on the base; A fixing device, the fixing device is composed of a cylinder, two fixing protrusions are arranged on the side of the fixing device, the fixing device is connected to the first limiting groove on the base through the fixing protrusions, a spinous process groove is arranged on the lower surface of the fixing device for fixing the spinous process on the spine, and the upper surface of the fixing device is connected to the elastic component; An interlayer, wherein a first limiting column and a second limiting column are arranged on the interlayer, and the interlayer and the base are fitted and connected to each other; A rack, one end of which is connected to the guide plate, and the rack is meshed with the first driven gear; A driving device, the driving device is composed of a driving rod and a driving gear, and the driving gear of the driving device can be engaged with a rack or a guide plate; A shell is fixed on the sandwich layer.

2. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: The guide plate is composed of a guide plate housing, a second driven gear, a rotating block, and an inlet; The guide plate housing is fixed to one end of the rack; The side surface of the rotating block is configured as an arc-shaped curved surface, and the upper and lower surfaces are configured as flat surfaces; The second driven gear is fixedly connected to the rotating block, and the second driven gear can be meshed with the driving gear of the driving device. The cutting opening is arranged on the rotating block for placing the surgical cutting tool.

3. The spinal facet joint surgery auxiliary tool according to claim 1 or 2, characterized in that: include: A second limiting groove is arranged at the bottom of the rack, and the second limiting groove cooperates with the second limiting column to limit the movement distance of the rack.

4. The spinal facet joint surgery auxiliary tool according to claim 3, characterized in that: include: The driving device can move in the horizontal direction; When the driving device is pulled outward, one end of the driving gear on the driving device is meshed with the first driven gear, and the other end is disengaged from the second driven gear; When the driving device is pushed inward, one end of the driving gear on the driving device is meshed with the second driven gear, and the other end is disengaged from the first driven gear.

5. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: The spinous process groove of the fixing device can be set to specifications of different sizes.

6. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: A guide protrusion is provided at the bottom of the rotating block to assist in guiding the insertion of a surgical cutting tool and improve the accuracy of the surgery.

7. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: A tactile sensor is provided at the end of the driving rod to provide more precise surgical control by real-time monitoring of feedback information during the operation.

8. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: The rotating track of the guide plate is provided with scale marks for providing the surgeon with accurate references for the angles and positions of the facet joints of the spine.

9. The spinal facet joint surgery auxiliary tool according to claim 1, characterized in that: include: The bottom of the fixing device is provided with an adsorbent material for tightly adhering to the surgical area.

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